Mental Health Issue Coursework Example | Topics and Well Written Essays - 4000 words

Mental Health Issue - Coursework Example The concepts of media images and perceptions are also explored, offering the possible negative and positive effect of media perceptions. Interestingly, the legal aspect of this issue is also detailed in the guide. A Case Study of Mental Health Service User X Cindy has a responsible job as a software engineer in a multinational company but she feels she is unable to advance in her career because of her inability to contribute in group meetings. It’s almost more than what she could bear just to sit in on meetings, let alone offer her opinions. Yesterday, her boss approaches her about the possibility of giving a presentation about their latest product to some customers. At that point, she began to be nervous and could not open her mouth to talk at all. He walks out of her boss’s office with lack of self-confidence and later refuses to give the presentation. 3 Phobias Phobias can be defined as the persistent and irrational fears that affect some people when they come into c ontact with external factors (stimuli) (Morgan, 2003). There are different categories of phobias based on the sources of stimuli, to which the persons affected withdraw or move away from. Examples of these categories are:- (i) Agoraphobia:- this is irrational and persistent fears about being in a place crowded with many other people, and which might make escape impossible in case there is a sudden danger (Gray, 1994). This may happen with or without a panic attack. (ii) Social phobia:- This is irrational and persistent fears about participating in a social or public event. A chronic form of social phobia also leads to avoidance behavior as the affected person keep running away from social duties (Kleiman, 1988). Cindy is affected by this kind of phobia as she dodges her duties. (iii) Specific phobias:- These are irrational and persistent fears to some specific stimuli. Examples of these stimuli include but are not limited to animal types, natural environment types, situational types , blood-injection injury etc. (Lefton, 1997). 4 Causes of Phobias Several researches have been conducted on the issue of phobias in order to detect their main causes. Although it is not quite certain what is responsible for one particular phobia; however, it has become known in recent years that phobias could occur based on (i) genetical factor—that is, certain fears may affect some families consciously or unconsciously; for example, twins that were raised in different environments still show fear for a certain object or condition; (ii) cultural factor—owing to their cultures, different people entertain different kinds of phobias; (iii) personal experiences—it is also believed that personal experiences constitute mainly the cause of phobias people have today; past unfavorable experiences may beat fear into people’s hearts that would last forever (Gray, 1994); (iv) uncertainty—it is also considered a fact that people tend to exercise some fears to u ncertain conditions or things they could not control like their future, job interviews and meeting new and unfamiliar people (Lefton, 1997). Symptoms of Phobias The symptoms exhibit by patients affected by phobias depends on the types of phobias and their severity. For those suffering from blood-injection injury, they do not normally feel afraid but experience disgust at the sight of needles (Morgan, 2003). However, there are some general symptoms of phobias, which include but are n

Relationship is an exploratory journey Essay Example for Free

Relationship is an exploratory journey Essay Janie grew up to find herself through each of her relationships. Her subdued lifestyle with her grandmother, her subdued and rather painful existence with her first husband Logan, her disillusionment after her initial enchantment with her second husband Jody, and her unfortunate killing of the husband she so loved, Tea Cake, all help her to recognize her for who she is and by the end of the novel, she is at peace with herself. This inner peace comes about by several twists and turns. She recognizes the various aspects of her own personality through her interactions in each of her relationships. She begins to understand that she might be more than a young girl whose responsibility has to be transferred from the matronly care of her grandmother to matrimonial bond to a unsympathetic husband during her first marriage. She realizes that she is more than an enchanted woman who wants be more than a socially acceptable companion to an ambitious and ruthless man during her second marriage. In her last marital relationship she begins to understand and appreciate her own need to be vivacious, lively and have good times with good company without the need to be apologetic or the need to be unaware of her partner’s shortcomings. In the death of her last husband Tea Cake at her own hand, she realizes that Life does not offer any linear solutions to the problems of relationships. Besides, she also understands that as a person she values her own individual survival is basic for her pursuit of happiness. Her confidence at having endured life’s trials and tests and having coming out not unscathed but with her individuality intact is mistaken for aloofness by her townsfolk. Finally, her revelations to her old friend Pheoby about her life finally give her a sense of fulfillment. Janie grows up in life through her relationships and that is why she has the confidence to tell her friend that â€Å"Ah been a delegate to de big’ssociation of life. Yessuh! De Grand Lodge, de big convention of livin’ is just where Ah been†(10) Janie started off in her childhood with a blind confidence that she was entitled to everything like everyone else. She did not realize she was colored till she saw herself in a photograph and could not recognize herself. When, the rest of the children and the people of the house pointed her out in the photograph, she exclaimed â€Å"Aw, aw! Ah’m colored! †(p. 13) She was taught by her nanny before she was married to Logan Killicks that â€Å"De nigger woman is de mule uh de world so fur as Ah can see. †(p. 20) Her completely subjugated relationship with Logan who was far older than her made her realize that perhaps she wanted more out of life. She wanted to feel a wanting in her heart and her body for a man, a true companion. That is what drove her into the arms of Jody, an ambitious, would-be politician. He was enchanting and had a manner that befitted his yet-to-acquire status. What she did not realize was Jody wanted her to be performing a particular role in his life. There was no fun in Jody because he always looked at life as a mission to be accomplished. She had to tell Jody that he was no fun to be with â€Å"Everybody can’t be lak you, Jody. Somebody is bound tuh want tuh laugh and play†(p. 76) She was so offended by Jodie’s denying her right to be herself, which she began to realize slowly with growing years and experience, she did not even care to be polite to a dying man. In fact Jodie’s death filled her with a sense of relief. Her realization that any relationship can come to the end of its utility and can fill a person with an unmentionable need for it to end came with Jodie’s death. \ After this growing distancing from Jody and his loftiness, which prevented Janie from living the life as a tribute to all possibility of happiness, Tea Cake entered. â€Å"Janie looked down on him and felt a self-crushing love. So her soul crawled out from its hiding place† (p. 122) Though Tea Cake gave her a brief scare by running away from her with her money, he returned to confess and begin their new life. His vivaciousness and his love for life was something that Janie had always wanted. For her the sweet pain and the all encompassing love she experienced under a pear tree were realized in her years with Tea Cake. But as all good things it also had to come to an end. The fearsome hurricane that they fled, the rabid dog that bit Tea Cake and its ill-effects on his personality and character were all revelations of the uncertainties of life. Janie had to kill Tea Cake in self defense and was acquitted in a trial consisting of all-male, all-white jury – yet another affirmation that Life had its strange ways of indicating its endless possibilities. Now, women forget all those things they dont want to remember, and remember everything they dont want to forget. The dream is the truth. Then they act and do things accordingly. †(3) The final place she comes back to is her hometown Eatonville. There, the act of sharing her life’s story with her friend fills her with a sense of completeness. Her relationship with her friend when she interacts very minimally with the townsfolk, allowing them to imagine all kinds of negative things about her, is a final revelation. The narration of the story was a necessity to herself as it was for Pheoby to know the facts. Her growth as a woman and a human being through her four major relationships in life is given a chance to be framed in perspective by her relationship with her friend –somebody with whom she shares no burden of expectation Works cited Hurston, Zora Neale and Jerry Pinkney Their eyes were watching God. Chicago: University of Illinois Press, 1991

Figuresof The Early America :: essays research papers

Thaddeus Stevens-   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The U.S. Representive from Pennsylvania who was the creator of the 14th amendment was a big figure in the young United States. He was born in1792. His schooling was very impressive and he became known for his background in law. Mr. Stevens practiced law in Gettysburg and Lancaster, Pennsylvania. He was a very hard and definite person when it came to justice and he even helped defeat a bill abolishing the state’s public school system and was a proponent of a protective tariff. When Stevens was in congress he was a Whig but also was totally against slavery. He was one of the leading organizers in the Republican party coming about and a very powerful figure in the American Civil War. Stevens really didn’t have a lot of love for the south because Stevens in the House and Charles Sumner in the Senate were totally against President Lincoln’s plan for reconstruction. In Steven’s eyes, the Southern states that were won needed to be the center and treated as â€Å"conquered states† as he stated. Not only this but he was a big advocate in bringing up charges to impeach Andrew Jackson. Finally, he was one of the persons responsible in getting many rights for African Americans rights by creating the 14th amendment which states â€Å"that all people born or naturalized in the United States are American citizens and citizens of their state of residence...† Andrew Carnegie-   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  This great Scottish man was born in his native on November 25, 1835. Mr. Carnegie was an iron/steel manufacture and a Philanthropist. Many people do not know that he was friends with some of the elite Americans such as Matthew Arnold, Mark Twain, William Gladstone and Theodore Roosevelt. In 1848, Carnegie’s family immigrated from his native to Pittsburgh, Pennsylvania from there he went from a regular boy to becoming a telegraph operator. There after he helped in the Civil War by helping to drastically improve the Union Army’s communication. He was the creator of the Keystone Bridge Company which made iron and steel. This man came from nothing then became something in the land of opportunities. By the 1900s the Carnegie Steel Company was making one fourth of all steel in the United States, there after he sold his company for $250 million. When he sold his company he retired and just began writing books and dona ting a lot of money.

BIMS Case Study

The Ballard Integrated Managed Services, Inc. (BIMS) employs a total of 452, of which 409 employees are deployed on a contract-based engagement for providing food and hospitality services to Douglas Medical Center (DMC). The performance of BIMS field personnel has eventually deteriorated and attributed to the sudden increase of operating cost at a rate of 74 percent, divergent to the usual 50-60 percent turnover in the previous months. The disturbing situation has called the attention of BIMS General Manager Barbara Tucker and tasked Human Resource Manager Debra Horner to conduct an initial finding.In this paper, the case study of BIMS will be discussed to examine the overall situation of the workplace, such as the existing problem, underlying causes and development, resolution and procedure, interested parties and challenges to the management. Situational background and description Based on the case review, correlating the question why does the problem exist could be attributed by t he â€Å"low-competencies from managerial to rank-and-file positions†.The managers and supervisors of food catering, housekeeping and maintenance divisions are unaware or misinformed of the prevailing situation on the increase of operating cost at 74 percent from the standard industry cost between 50 to 60 percent. As found, the problem developed upon irregular performance of personnel, such as the higher occurrences of sick leave and dawdling at work that brought about complaints of DMC on sloppiness of BIMS personnel services.Accordingly, an employee survey has been conducted by BIMS HR Manager to evaluate the underlying causes and development of problems, purposely to resolve the problem prior to initial inclination of replacing the personnel. About 78 respondents have participated on the initially conducted survey, representing 17. 3 percent of the overall targeted personnel. Illustrated below was the survey tool: Source: School of Advanced Studies, Pearson Custom Publish ing (2004)The challenge to finding the causes of problems and its resolution has been devised by the HRM through the above illustrated survey tool, primarily reconsidering the employees to convey their views, such as cited on (1) work condition, (2) shift scheduling, (3) skills training, (4) compensation, (5) communication and information, and (7) job security (School of Advanced Studies; in Pearson Publishing, 2004). Evidently, the management itself is the majority stakeholder to meeting the challenging situation of change in the performance of the workforce in order to resolve the issues.Thus, the result of the survey is significant to meeting the challenges. Problem Statement It is known that there are major gaps affecting the work performance of BIMS personnel. The problem is primarily attributed by the issue of unfair compensation and secondarily attributed by weak communication between the employees and the management. This problem statement can be well presented based on the result of survey as illustrated below: Source: Author’s own (2009)As indicated in the illustration above, â€Å"Question #6† obtained 19 respondents with negative responses and â€Å"0† respondents have ever positively responded, similar to â€Å"Question #9† that obtained 17 negative responses and retained â€Å"0† positive results. Therefore, the problem statement relating the â€Å"inferior performance† of the employees must be significantly addressed by the management with reference to the result of primary and secondary issues affecting the problem. Further findings have found the â€Å"range of points† from positive to negative responses of respondents.It shows that the internal or organizational problem is well expressed on the point-to-point responses from â€Å"1 to 5 scoring†. On the other hand, the scoring between 2, 3 and 4 also indicates the relevance of negative responses away from being positive, manifesting that the problems are causal to the dispensation of management, in which is exhibited by the illustration below: Source: Author’s own (2009) The point-to-point scoring from 1 to 5 exhibits the range of responses between 95 (negative) and 163 (positive).It is noticeable that the scoring between positive and negative has a very significant gap or distant difference. As indicated by the â€Å"Median Points between 2, 3 and 4†, the range of points can be noticed to be far different to obtaining positive responses, wherein illustration above has indicated the gaps of scoring at 232, 148 and 113. In sum, the positive responses representing a total of 95 are far distant even from the scoring at median points, of which capsulate the finding of significant problem.

Chicago Analysis

â€Å"Chicago† Analysis â€Å"Chicago† by Carl Sandburg is a poem written to describe the everyday lives of Chicagoans. Sandburg uses poetic devices such as similes, personification, and imagery to emphasize parts of the poem, which helps him show his love and pride for the city of Chicago. Imagery played a very important part in the poem because it gave the reader an image in there head of the city and the environment with the people who lived there.The main purpose of this poem is to defend the common theories that are directed toward the city of Chicago. Sandburg talks about the corruption of the city, which shows he is honest about what he says, but also points out the flaws of other cities and their people. He also points out that even though Chicago is corrupt and bad on the outside, it still has good people on the inside. In the first stanza Carl Sandburg gives details about the jobs of the city and the things most noticed about it.The first stanza states the nam e HOG butcher of the world which gives the person an image of a butcher in the city; it also states toolmakers, Stacker of wheat and railroad workers. The details of the city make you think of a stormy, husky, brawling, city with big shoulders. This all means that the city is windy, full of fighters and destruction. Imagery in the poem state that things are very bright and out spoken in the city but even though the city is seen as dark and evil on the outside it’s people are very bright and filled with happiness. Chicago† is filled with personification. By the end of the poem, Chicago seems to be way more like a man than like a city. It has shoulders, a heart, a pulse, and it laughs. Sandburg paints a portrait of a city that is, in some ways, very human. It's flawed and it's beautiful, it's rough and intense. It's vibrant and adjustable. It turns out that the best way for Sandburg to comprehend the city is to compare it to a human being, that way we have a frame of refe rence for all the beautiful, strong, messiness.Lines 1-5 is the perfect example for a personification. â€Å"Here, the city is described as various types of workers; it is a hog butcher and a toolmaker and so on. The city resembles the very people who live in it. † In the poem â€Å"Chicago† Carl Sandburg uses similes to create an idea in the readers mind. For example Sandburg writes,†Fierce as a dog with tongue lapping for action as a savage pitted against the wilderness. † Here the poet want to compare the city of Chicago to a fierce dog.This really helps the reader imagine Chicago as a wild and crazy city that is ready for action. Sandburg does an excellent job on demonstrating his love and pride for the city of Chicago. The poetic devices not only make the poem a lot more understandable, but also more interesting. The personifications Sandburg uses make the city seem like a man. He also uses great similes to compare Chicago to other places (which is nea rly impossible), and imagery to help those who have never been to Chicago understand what Chicago is like.

global problems essays

global problems essays Global problems affect the modern world. Todays rapid changes have made countries more interdependent than ever before, shrinking the world into a global village. As the world grows smaller, events in any one area have a greater impact on other parts of the world. National borders do not limit the effects of pollution or environmental destruction. Even poverty in some areas affects other areas because of migration and its impact on the world economy. Three examples of global problems that affect the modern world are famine, pollution, and terrorism. Only few countries are able to produce more food than their citizens need. For the rest of the world, hunger and malnutrition are common. In developing nations, about 150 million children under the age of five go to bed hungry each night. Climate changes and erosion have worsened the problem in some places like Somalia. Moreover, each advance in producing more food is often met with a corresponding increase in population. Terrorism can be defined as the use of violence against civilians for political purposes. It draws attention to a groups grievances and is used to frighten governments into making concessions. Many radical groups use terrorism. The IRA, for example, used terrorism against the British in an attempt to unify Ireland. In the 196os and 1970s the PLO used terrorism against Israel, seeing it as self defense against what they considered Israeli terrorism, the occupation of Palestinian lands. The governments of Iraq, Iran, Syria, and Libya not only helped the Palestinian terrorists, but also used terrorism to silence their own opponents. Terrorist organizations have made use of the following tactics: taking hostages, bombing and political assassinations. Industrial growth is often accompanied by an increase in the amount of pollutants released into the air. They cause such problems as acid rain and increase the number of people suffering ...

Cuban Revolution essays

Cuban Revolution essays The Cuban Revolution of the 1950s was a big part of history in the 20th century. Cuba was the first Latin American country to start a communist style of government, the first to go against the United States of America and the first to ally with the Soviet Union. The main leader of this revolution was Fidel Castro, who is still the leader of Cuba today. The document of have chosen as the basis for my paper is the, Creeping Revolt, this article was published January 7, 1957 by Time magazine. It was published right around the time in which Fidel Castro and his group of revolutionaries who were called the 26th of July Movement because that is the day Fidel Castro led an attack on the Moncada army barracks. The Castro or Cuban revolution was not widely reported because the leader of Cuba at the time, President Batista, tried to keep the revolution secret so that all the other countries would think that Cuba was not in any danger of rebels taking the whole country over. The Cuban Revolution led the way for other Latin American countries to try and rid the American influence from their country. Fidel Castro and the 26th of July Movement also showed the effectiveness of guerilla warfare and this type of fighting was adopted by many rebels around the world, for better or worse. Fidel Castro brought Cuban nationalism into his fight for freedom and justice and this is why much of the Cuban public supported him at the time of his Revolution. The Cuban Revolution shows what a small group of rebels can do when they have a charismatic leader along with a determined group of followers, who were willing to risk their lives for Castros cause. The document, Creeping Revolt was obviously done with little material because American journalists were not in Cuba at the time because of the intense danger involved with reporting there. Time Magazine wouldnt have been the most re...

Livermorium Facts - Element 116 or Lv

Livermorium Facts - Element 116 or Lv Livermorium (Lv) is element 116 on the periodic table of the elements. Livermorium is a highly radioactive man-made element (not observed in nature). Heres a collection of interesting facts about element 116, as well as a look at its history, properties, and uses: Interesting Livermorium Facts Livermorium was first produced in July 19, 2000 by scientists working jointly at the Lawrence Livermore National Laboratory (USA) and Joint Institute for Nuclear Research (Dubna, Russia). At the Dubna facility, a single atom of livermorium-293 was observed from bombarding a curium-248 target with calcium-48 ions. The element 116 atom decayed into flerovium-289, via alpha decay.Researchers at Lawrence Livermore had announced synthesis of element 116 in 1999, by fusing krypton-86 and lead-208 nuclei to form ununoctium-293 (element 118), which decayed into livermorium-289. However, they retracted the discovery after no one (including themselves) was able to replicate the result. In fact, in 2002, the lab announced the discovery had been based on fabricated data attributed to the principal author, Victor Ninov.Element 116 was called eka-polonium, using Mendeleevs naming convention for unverified elements, or ununhexium (Uuh), using the IUPAC naming convention. Once a new elements synthes is is verified, the discoverers get the right to give it a name. The Dubna group wanted to name element 116 moscovium, after the Moscow Oblast, where Dubna is situated. The Lawrence Livermore team wanted the name livermorium (Lv), which recognizes Lawrence Livermore National Laboratory and Livermore, California, where it is located. The city is named, in turn, for American rancher Robert Livermore, so he indirectly got an element named after him. The IUPAC approved the name livermorium on May 23, 2012. Should researchers ever synthesize enough of element 116 to observe it, its likely livermorium would be a solid metal at room temperature. Based on its position on the periodic table, the element should display chemical properties similar to those of its homologous element, polonium. Some of these chemical properties are also shared by oxygen, sulfur, selenium, and tellurium. Based on its physical and atomic data, livermorium is expected to favor the 2 oxidation state, although some activity of the 4 oxidation state may occur. The 6 oxidation state is not expected to occur at all. Livermorium is expected to have a higher melting point than polonium, yet a lower boiling point. Livermorium is expected to have a higher density than polonium.Livermorium is near an island of nuclear stability, centered on copernicium (element 112) and flerovium (element 114). Elements within the island of stability decay almost exclusively via alpha decay. Livermorium lacks the neutrons to truly be on the island, yet its heavier isotopes decay more slowly than its lighter ones. The molecule livermorane (LvH2) would be the heaviest homolog of water. Livermorium Atomic Data Element Name/Symbol: Livermorium (Lv) Atomic Number: 116 Atomic Weight: [293] Discovery:  Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2000) Electron Configuration:  [Rn] 5f14  6d10  7s2  7p4   or perhaps [Rn] 5f14  6d10  7s2 7p21/2  7p2  3/2, to reflect the 7p subshell split Element Group: p-block, group 16 (chalcogens) Element Period: period 7 Density: 12.9 g/cm3 (predicted) Oxidation States: probably -2, 2, 4 with the 2 oxidation state predicted to be most stable Ionization Energies: Ionization energies are predicted values: 1st:  723.6  kJ/mol2nd:  1331.5  kJ/mol3rd:  2846.3  kJ/mol Atomic Radius: 183 pm Covalent Radius: 162-166 pm (extrapolated) Isotopes: 4 isotopes are known, with mass number 290-293. Livermorium-293 has the longest half-life, which is approximately 60 milliseconds.   Melting Point:  637–780  K  Ã¢â‚¬â€¹(364–507  Ã‚ °C, ​687–944  Ã‚ °F) predicted Boiling Point:1035–1135  K ​(762–862  Ã‚ °C, ​1403–1583  Ã‚ °F) predicted Uses of Livermorium: At present, the only uses of livermorium are for scientific research. Livermorium Sources: Superheavy elements, such as element 116, are the result of nuclear fusion. If scientists succeed in forming even heavier elements, livermorium might be seen as a decay product. Toxicity: Livermorium presents a health hazard because of its extreme radioactivity. The element serves no known biological function in any organism. References Fricke, Burkhard (1975). Superheavy elements: a prediction of their chemical and physical properties. Recent Impact of Physics on Inorganic Chemistry. 21: 89–144.Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). Transactinides and the future elements. In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer ScienceBusiness Media.Oganessian, Yu. Ts.; Utyonkov; Lobanov; Abdullin; Polyakov; Shirokovsky; Tsyganov; Gulbekian; Bogomolov; Gikal; Mezentsev; Iliev; Subbotin; Sukhov; Ivanov; Buklanov; Subotic; Itkis; Moody; Wild; Stoyer; Stoyer; Lougheed; Laue; Karelin; Tatarinov (2000). Observation of the decay of  292116.  Physical Review C.  63:Oganessian, Yu. Ts.; Utyonkov, V.; Lobanov, Yu.; Abdullin, F.; Polyakov, A.; Shirokovsky, I.; Tsyganov, Yu.; Gulbekian, G.; Bogomolov, S.; Gikal, B. N.; et al. (2004). Measurements of cross sections and decay properties of the isotop es of elements 112, 114, and 116 produced in the fusion reactions  233,238U,  242Pu, and  248Cm48Ca.  Physical Review C.  70  (6).

Rigoberta Menchs Book Scholarship Essay Example | Topics and Well Written Essays - 1500 words

Rigoberta Menchs Book - Scholarship Essay Example I am 23 years old. I would like to give this testimony live that I have not learned from a book and neither have I learned alone yet that all this have I learned from my village. It cost me much to remember all the life that I have lived, so many times there are times very black and there are times that, yes, are enjoyable also but the most important is, I believe, that I want to emphasize that I am not the only one, so have lived many people and it is the life of all. The life of all the poor Guatemalans and I will try to give a bit of history. My personal situation includes all the reality of a village. In the first place, it still costs me much to speak Spanish since I didn't have university, I didn't have schooling. It has been three years since I learned Spanish and to speak it; it is difficult when it is learned only from memory and not learning in a book. In Guatemala there exist twenty-two indigenous ethnic groups. I belong to one of the ethnic groups that is the Quich ethnicity, I have my customs, indigenous Quich customs, but however I have lived very close to almost the major part of the other ethnicities during my organizing work with my village. I am from San Miguel/Uspantn, Quich Department. The Quich live in the northwest of the country. Precisely, my land is almost a paradise of all the beauty that is the nature in those places since there are not roads, there are not vehicles. Only people enter. VOCABULARY FOR COMPREHENSION Read the sentences and circle the synonym for the underlined word from the choices given. 1. The testimony given in court was very convincing. a. evidence b. report c. oral testification 2. No one knew that the village had been burned to the ground. a. city b. small town c. court 3. It was a black day when we had to have our dog euthanized. a. somber b. happy c. color 4. It was important that the judge know the girl's name. a. significant b. different c. okay 5. I can't emphasize enough the significance of those numbers. a. say b. underscore c. differentiate 6. The history of the world is captured in these two books. a. chatter b. background c. litany 7. The ethics of the situation call for drastic measures. a. moment b. times c. case 8. Her memory is excellent when it comes to facts. a. time b. recall c. note 9. These people exist on a diet that is barely 1,000 calories per day. a. subsist b. eat c. fluctuate 10. There are twenty-two indigenous ethnic groups in Guatemala. a. barbaric b. native c. vegetarian 11. Each ethnic group has unique characteristics which make it special. a. cultural b. people c. land 12. Examples of ethnicity include Lithuanian, Japanese, and Irish. a. pop stars b. a traditional cultural group c. variety 13. The customs of Guatemala are varied. a. traditions b. ways of doing things c. cans of soda pop 14. Rigoberta does organizing within

Henri Matisses Fauvism Research Paper Example | Topics and Well Written Essays - 1750 words

Henri Matisses Fauvism - Research Paper Example The involvement of his mother in advising customers on the best colors in his father’s shop that sold house-paints is what made him develop some interest on color. Thus, it was from his mother that he developed the sense of color. This is also justified by her mother who was not only a skillful painter, but also a fashionable artist. Unfortunately, Matisse grew as an awkward youth who disregarded the rigors of the North. He despised winter seasons with passion. He was also a contemplative child though not very bright. Despite undergoing growth and development, Matisse never lost interest on nature; he still valued his native soil as well as growing things (Ferrier, 1996). Matisse worked as a court administrator in his hometown, Le Cateau-Cambresis, after gaining his qualification in Paris. Matisse discovered his real profession in a unique way. He started painting in 1889 when he was still recovering from appendicitis through the aid of his mother who brought him art supplies. It was also through his mother’s advice that Matisse decided to follow his emotions in pursuing his interest in the profession he loved. His mother had advised him to follow his own emotions instead of the rules of art. A year after his recovery appendicitis, 1891, Matisse returned to Paris to further his studies in art at Acadenie Julian. It was also in Bouguereau that he learnt essential lessons of classical painting. He also did many drawing exams so as to have a chance of joining Ecole des Beaux-Arts.

Examples of Real Life Markets Research Paper Example | Topics and Well Written Essays - 250 words

Examples of Real Life Markets - Research Paper Example This may be seen in real life in Apple’s products; the company has its own selling propaganda – when it produced the iPad it was the only firm in the market to produce such a smooth tablet for the purpose of work as well as entertainment. Other companies later came out with similar products however it holds monopoly in the market even today for its high end and sophisticated products. A monopoly however will not always produce at a profit maximizing level because if it prices its products too high then it might not have any consumers at all; thus it needs to check the level of competition among the consumers as well as the other potential producers in the market before pricing its products. Oligopoly on the other hand is a market that is dominated by a few suppliers (Oligopoly definition) for example in the case of cell phones, there are a few renowned companies like Nokia, Blackberry, iPhone, Samsung that dominate the market at a large level. They place their prices at somewhat the same as one another while bringing about innovation within their products to attract consumers. The demand thus is high however the supply is also at a constant with the demand because of the number of suppliers and options available to the

Chronic Conditions Prevention and Management Essay

Chronic Conditions Prevention and Management - Essay Example There are myriad pathogenic processes that are involved in the development of the disease. These processes range from destruction of the ÃŽ ²-cells of pancreas, which is an autoimmune process, with concurrent deficiency of insulin to different abnormalities that leads to the resistance to insulin action. The underlying factor of the abnormalities in protein, fat and carbohydrates metabolism in diabetes disease is as a result of reduced insulin action on target tissues. Studies have shown that insulin secretion impairment, as well as the defect in insulin action, often coexists in one patient but it is not clear which abnormality is usually the primary cause of the elevated blood sugars (American Diabetes Association, 2011). Diabetes causes substantial morbidity and mortality in Australia and the estimates of diabetes prevalence provide stakeholders to plan and allocate enough funds for health services. Therefore, the continuous availability of data on the prevalence of diabetes in Australia is significant for disease monitoring, planning, identifying the population at risk, providing services for people and developing an effective preventive strategies (Shaw & Tanamas, 2012). It is approximated that one million Australians are diagnosed with diabetes mellitus and the prevalence increases with age, which is noted to be higher in male gender (4.9%) than in female gender (3.8%). In addition, the prevalence is high in the northern part of Australia (10.6%) and lowest in the Central part of Australia (3.0%). The disease has been noted to have an onset at childhood in several cases. A report issued by an Australian Institute of health showed that 0.3% of Australians aged below 35 years were diagnosed with diabetes as compared to 16% of Australians aged above 65 years.

Richard Nixon and the Watergate Term Paper Example | Topics and Well Written Essays - 2500 words

Richard Nixon and the Watergate - Term Paper Example The concepts about the functioning of American Presidents have been rewritten after the Watergate incident. Watergate incident was occurred in 1970. The Watergate story started to unveil when five men were arrested on charges of breaking and entering into the Democratic National Committee headquarters at the Watergate complex on June 17, 1972. At the time of arrest these people had thousands of dollars in cash in their possession. After investigation FBI, concluded that these cash were the slush fund used by the 1972 Committee to Re-elect the President Nixon. In other words, the investigation extended towards the President’s office and the involvement of President Nixon and his officials in unethical behaviors before and after the president’s election was slowly unveiled. Moreover, the investigating team also revealed that President Nixon had a tape recording system in his offices and that he had recorded many conversations. All the above charges finally led to the resignation of President Nixon. This paper briefly analyses the Watergate incident and the subsequent incidents happened in American politics which finally lead to the resignation of President Richard Nixon. â€Å"Five Held in Plot to Bug Democratic Offices Here," said the headline at the bottom of page one in the Washington Post on Sunday, June 18, 1972. The story reported that a team of burglars had been arrested inside the offices of the Democratic National Committee in the Watergate office complex in Washington† (Washington Post, 2010). The story of one of the greatest political scandal of modern history or the chain of events started from there. When the above news first appeared on newspapers, neither the readers nor the publishers took it as sensational news. But, as the days progressed, new stories in connection with the above incident started to catch the headlines of the news papers. Washington Post appointed two of their smartest reporters; Carl

Chronic Conditions Prevention and Management Essay

Chronic Conditions Prevention and Management - Essay Example There are myriad pathogenic processes that are involved in the development of the disease. These processes range from destruction of the ÃŽ ²-cells of pancreas, which is an autoimmune process, with concurrent deficiency of insulin to different abnormalities that leads to the resistance to insulin action. The underlying factor of the abnormalities in protein, fat and carbohydrates metabolism in diabetes disease is as a result of reduced insulin action on target tissues. Studies have shown that insulin secretion impairment, as well as the defect in insulin action, often coexists in one patient but it is not clear which abnormality is usually the primary cause of the elevated blood sugars (American Diabetes Association, 2011). Diabetes causes substantial morbidity and mortality in Australia and the estimates of diabetes prevalence provide stakeholders to plan and allocate enough funds for health services. Therefore, the continuous availability of data on the prevalence of diabetes in Australia is significant for disease monitoring, planning, identifying the population at risk, providing services for people and developing an effective preventive strategies (Shaw & Tanamas, 2012). It is approximated that one million Australians are diagnosed with diabetes mellitus and the prevalence increases with age, which is noted to be higher in male gender (4.9%) than in female gender (3.8%). In addition, the prevalence is high in the northern part of Australia (10.6%) and lowest in the Central part of Australia (3.0%). The disease has been noted to have an onset at childhood in several cases. A report issued by an Australian Institute of health showed that 0.3% of Australians aged below 35 years were diagnosed with diabetes as compared to 16% of Australians aged above 65 years.

Structural Equation Modelling and Logistic regression Assignment

Structural Equation Modelling and Logistic regression - Assignment Example While card payments were the main cashless mode of payment up to the beginning of the last decade, mobile money payments have also emerged as a likeable payment method, mainly in fairly underdeveloped regions (Dahlberg, Mallat & Oorni, 2008). Other non-card payment methods include virtual money carriers, including Google Wallet, Skrill, and PayPal (Ayodele, Ayo & Adeyibi, 2013). Among the factors that appear pertinent towards adoption of any of these payment methods are ease of use, importance/ usefulness, risk/ security levels, and accessibility (Ayodele, Ayo & Adeyibi, 2013; Abubakar & Ahmad, 2013). According to Abubakar and Ahmad (2013), higher levels of awareness towards cashless payments correspond to higher uptake levels. Ease of use is an important factor for adoption of cashless payments. Users (and potential users) with better knowledge of the cashless payment modes available in a particular region catalyse uptake levels. To them, usage of the methods is relatively easy (Ayodele, Ayo & Adeyibi, 2013). Similarly, knowledge of usefulness/ importance of such payment modes underscores their higher acceptability among persons with such knowledge (Ayodele, Ayo & Adeyibi, 2013). The sample comprised 320 respondents who were served with questionnaires to indicate their level of agreement with assertions made regarding ease of use of cashless payments system, trust in the cashless payments system, and usefulness of the same. The three variables used several questions for each, which were then aggregated to find each individual’s average rating of each variable. That is, the variable usefulness was obtained by averaging the ratings given per individual across the four questions underlying the variable; the four responses denoting ease of use were averaged to obtain the variable; and the ratings to the five questions underlying

Discussion About Genetically Modified Foods Essay Example for Free

Discussion About Genetically Modified Foods Essay Outline Introduction a. The genetically modified foods are a long issue which is widely debated. b. People feel confused about their safety. I. Views a. ) Magana-Gomez’s argument. b. ) He argues that negative effects of GM food were identified â€Å"at molecular and microscopic levels†. c. ) Curieux-Belfond CL contends that the benefits of genetically modified foods far outweigh the disadvantages. II. Genetically modified foods: Beneficial views Adverse views a. What is the possible risk for genetically modified crops considering nutrition and health? b. Whether the economic effects are the most important?c. Will it bring severe environment problems? III. Arguments for beneficial effects of GM foods a. Firstly, transgenic technology has made considerable progress in food applications. b. Transgenic food has successfully lowered food prices and ensured food safety. c. GM foods significantly reduce the environmental impact of agriculture. Introduction The author, Magana-Gomez, critically analyzed the risk assessment methods of transgenic food for human nutrition and health in the paper, â€Å"Risk assessment of genetically modified crops for nutrition and health†. Magana reviewed various modes including different feeding period, animal modes and parameters in the paper published in 2011 by Nutrition Reviews (Magana G, 2009). In consistent with his studies, negative effects of GM food were identified â€Å"at molecular and microscopic levels†. However, with our entry into the 21st century, genetically modified foods have undergone even faster development. However, there are also many doubts about the safety of genetically modified foods. Therefore, genetically modified foods have become a hot topic issue. Personally, although there are many controversies about GM food, I still insist on the research and promotion of transgenic food due to its diverse benefits. Views According to Curieux-Belfond CL, he could identify the factors that deserve consideration before â€Å"commercialization and promotion of transgenic food† (182). In this paper, â€Å"Factors to condider before production and commercialization of aquatic genetically modified organisms: the case of transgenic salmon†, the author took transgenic salmon as an example, in which Curieux-Belfond examined the corresponding impacts in terms of aquaculture, wildlife, ecosystem and human health. The paper published in 2011 by Evironmental Science Policy suggested that GM food undoubtedly contributed to economic benefits without exerting too much extra burden (Curieux B, 2009). In the end, the author believed that the benefits of genetically modified foods far outweigh the disadvantages. Analysis of the benefits of genetically modified foods Magana’s argument is persuasive when he assessed the risks about GM food. However, since genetic engineering techniques have successfully transferred anti-viral, insect resistance, cold resistance and other genes to cotton, wheat, tomatoes and other plants, we can get stable new varieties of genetically modified, with low production cost and high-yield food, which will ease the world food shortage and reduce the use of pesticides to a large extent. Based on the above reasons, I will provide a critical analysis with the following specific examples which show his argument is partially wrong. Firstly, transgenic technology has also made considerable progress in animal food applications. At present, a variety of mammal and bird genes are successfully integrated into the genome of fish, which can significantly enhance transgenic fish muscle protein content and improve growth speed. With the development of genetic engineering technology, people have been freed from natural enzymes to a large extent. Especially when the enzyme obtained from natural protein material encounters difficulties, genetic engineering has the unique advantages of natural gene cloning (Seralini GE, 2011). Thus, it can be highly expressed in microorganisms with mass production by fermentation. At present, the transgenic enzymes are widely used in the food industry, such as maltose enzymes amylase, pectinase and the juice protease. The food nutritional quality modified by genetic engineering has also made remarkable achievements. For instance, the genetic engineering technology has been applied for seed protein improvement, which renders it possible to change the plant composition and amino acid content. Secondly, transgenic food has successfully lowered food prices and ensured food safety, which helps increase production and food supply while reducing the farm labor and pesticide applications, agricultural inputs and production costs (Weasel LH, 2009). In the future, GM crops have great potential in solving the food crisis. For instance, by applying transgenic technology to the human staple foods of rice and wheat, people can increase food production and improve nutritional quality, which will provide mankind with higher-quality food. Furthermore, GM foods have also proved effective in alleviating poverty and hunger. The world’s poorest 50% of the population are small and resource-poor farmers, while 20% living in rural areas without their own land actually depend on agriculture. Therefore, the increase in small-scale and resource-poor farmers’ income will directly assist 70% of the world’s poorest people (Curieux-Belfond O, 2009). So far, genetically modified cotton in India, China and South Africa have already made a significant contribution to more than 1. 2 million poor farmers’ income. The benefits of genetically modified corn in the Philippines and South Africa will be much clearer in the future. In addition, genetically modified rice has great potential to benefit 250 million poor families in Asia, whose benefits will reach 10 million people (Curieux-Belfond O, 2009). Transgenic food also helps to reduce land development. Transgenic technology has been developed to improve the current 1. 5 billion hectares of arable land productivity through conservation of biological resources, thereby reducing land development and deforestation. Thirdly, I will demonstrate such improvement since they significantly reduce the environmental impact of agriculture. Traditional agriculture has a significant impact on the environment, and transgenic biotechnology can help reduce this impact. In the first decade of application of genetically modified crops, by planting herbicide and insect-resistant characteristics, transgenic technologies have greatly reduced the use of pesticides, saved fossil fuels and reduced carbon dioxide emissions. Undoubtedly, genetically modified crops with drought-tolerant genes will improve water-use efficiency and maintain sustainable agricultural development, which will play an important role in easing the crisis of population growth and global food shortage (Artemis D, 2009). GM crops have also contributed to reduce carbon dioxide emissions in two main ways, reducing greenhouse gas emissions and helping slow climate change. First, by reducing fuel use, the spraying of insecticides and herbicides, GM crops continue to reduce carbon dioxide emissions. In 2007, genetic engineering has been stated to reduce 1. 1 billion kilograms of carbon dioxide emissions, which is equivalent to a decrease of 50 million cars from the road. Secondly, herbicide-resistant GM crops help reduce tillage applications, which protects the land and enhances soil carbon sequestration. Conclusions Despite the many advantages of GM food, we cannot ignore the risks. After genetically modified foods have been taken into the human body, they may cause harm to human health. Moreover, after a large number of transgenic crops come into nature, they may be biologically harmful to ecosystems. Since the risks of GM food is serous, it is important for us to reflect on it first. Any of the scientific and technological developments should be comprehensive and provide well-being for human life. If genetically modified foods can only increase our economic interests and improved material life without the moral, social and environmental harmony, they cannot be defined as making great contribution to social development. Therefore, whether GM food is a benefit or a disadvantage really depends on what kind of human values people hold (Qaim M. 2009). That is the question we reflect on deeply. In contemporary society, with the rapid development of science and technology, the economic situation of the human and the material standard of living has been soaring. It seems that mankind is taking great proud for the advanced technology. However, we should look back to what the living environment we rely on is subjected to. Therefore, genetically modified foods are seen as the savior of mankind, which is actually human self-centered ideology. Of course, with the continuous development of biotechnology and genetic engineering, human beings have the ability to create more genetically modified food. Therefore, the drawbacks of genetically modified food are not the technology itself, but rather due to humans themselves. Thus, personally, I fully sanction the development of GM foods while we should objectively analyze the potential risks. Reference Artemis D. 2009. â€Å"Health risks of genetically modified foods. † Food Science and Nutrition. 49. (2):164-175. Curieux B, Vandelac L, ect. 2009. â€Å"Factors to condider before production and commercialization of aquatic genetically modified organisms: the case of transgenic salmon. † Evironmental Science Policy. 12. (2):170-189. Magana G, Javier A, Calderon de la Barca, Ana M. 2009. â€Å"Risk assessment of genetically modified crops for nutrition and health. † Nutrition Reviews. 67 (1):1-16. Qaim M. 2009. â€Å"The economics of genetically modified crops. † Annual Review of Resource Economics. 1:665-693. Seralini GE, Mesnage R, ect. 2011. â€Å"Genetically modified crops safety assessments: present limits and possible improvements. † Environmental Sciences Europe. 23. (10): 1-10. Weasel LH. 2009. â€Å"Food Fray: Inside the Controversy over Genetically Modified Food. † American Management Association. Amacom, 86-150. Print.

Body Image, Self Esteem and Eating Relationship | Methods

Body Image, Self Esteem and Eating Relationship | Methods Methodology In this chapter, we are going to discuss the research design, respondents, instrument, procedure and data analysis that we use at doing the research study. For our research, we used Body Shape Questionnaire (BSQ-16B), Rosenberg Self-Esteem Scale (RSE), and Eating Attitudes Test (EAT-26) at investigating the relevance of body image with both self-esteem and eating attitudes. Furthermore, participants were focused at female Foundation students of UTAR. Details were further discussed in our following subtopic. Research Design Research design is defined as a tool to gather relevant evidence that involve with a specification of the type of useful evidences needed for answering our research question, testing a theory and to describing some phenomenon shown (McGaghie, Bordage, Crandall, Pangaro, 2001). In other words, research design is to answer the primary question as suggested in our research clear enough from the uncertainty. In this study, a quantitative research with cross-sectional design was selected to use. A quantitative research refers to an empirical method used to explain phenomena by collecting numerical data. The term cross-sectional design implies that one or more samples are drawn from the population at one point of time (Shaughnessy, Zechmeister, Zechmeister, 2010). In addition, a purposive sampling particularly the stratified purposeful sampling was utilized in this research. In a purposive sample, the sample is typically designed to pick a small number of cases that will yield the most information about a particular phenomenon. In other words, it involves selecting information-rich cases for in-depth study. Purposive sampling leads to greater depth of information from a smaller number of carefully selected cases (Teddlie Yu, 2007). On the other hand, a stratified purposeful sampling presenting and providing characteristics of particular subgroups of interest and facilitates comparison. It involves capture major variations rather than to identify a common core (Patton, 1990). Respondents The female Foundation students in UTAR (Perak Campus) have been targeted as the population of this research. There are 1427 female Foundation students and a sample consisted of 100 students (N=100) from both science and art streams participated in this study. In balancing the body size groups, 50 plump and 50 thin female participants between the ages of 18 to 23 years old (M= 20.16, SD= 1.45) were selected. This study focused on female Foundation students is that they are at a much higher rate to experience body image disturbance and disordered eating than males (Serdar, n.d.). In having adjustment to new lifestyle, females might have thought changing and more aware of themselves and how others perceive them as they meet more new people in the new environment. Whereas, the relationship between body image dissatisfaction and eating disorders has not significantly correlated with males (Furnham, Badmin, Sneade, 2002; Wimbish, 2009) and hence, the study did not include males to prevent the possibility of producing extreme scores. Instrument Body Shape Questionnaire (BSQ-16B). The BSQ 16-item is a refined self-report questionnaire developed by Evans and Dolan (1993) to assess body dissatisfaction and concern over body shape. Participants rate the items based on a six-point Likert scale, ranging from 1 = never to 6 = always with higher scores indicate greater body shape dissatisfaction. Items are all presented as self-statement such as â€Å"Have you been afraid that you might become fat (or fatter)?† (item 2) and â€Å"Has seeing your reflection (e.g. in a mirror or shop window) made you feel bad about your shape?† (item 13). The BSQ-16B has been found to be a reliable and valid measure of body image satisfaction as it had been shown to have good test-retest reliability (.88) (Hudson, 2008) and excellent internal consistency (.95) (Pook, Tuschen-Caffier, Brahler, 2008). Rosenberg Self-Esteem Scale (RSE). The RSE is a 10-item self-report questionnaire developed by Rosenberg (1965) to measure global self-esteem level of participants in this study. Participants rate the items based on a four-point Likert scale, ranging from 3 = strongly agree to 0 = strongly disagree with higher scores indicate higher level of self-esteem. Items are all presented as self-evaluation on positive self-esteem (item 1, 3, 4, 7, 10) and negative self-esteem (item 2, 5, 6, 8, 9). RSE has been found to have good test-retest correlations of .82 to .88 and internal consistency of .77 to .88 (Hudson, 2008), which indicate the test is having high reliability of measure self-esteem. Eating Attitude Test (EAT-26). The EAT 26-item is an abbreviated version developed by Garner, Olmstead, Bohr, and Garfinkel (1982) from the original scale which is EAT-40. EAT-26 is a most widely used standardized self-report questionnaire to measure the symptoms and concerns characteristics of eating disorders. Participants rate the items based on a six-point Likert scale (3 = always, 2 = usually, 1 = often, 0 = sometimes, 0 = rarely, 0 = never) with a cutoff scores of 20 had been suggested to identify persons with problematic attitudes and behaviors towards eating. Items are presented in three subscales: 1) Dieting (item 1, 6, 7, 10, 11, 12, 14, 16, 17, 22, 23, 24, 26), 2) Bulimia and food preoccupation (item 3, 4, 9, 18, 21, 25), and 3) Oral control (item 2, 5, 8, 13, 15, 19, 20). The EAT-26 has been shown to have a good intercorrelations with EAT-40 (r = .98) and good internal consistency (.90) in non-clinical populations (Garner et al., 1982). Reliability In this study, the reliability of variables has been analyzed. The results of Cronbach’s Alpha reliability test showed that all the scales are highly reliable of BSQ-16B (16 items; ÃŽ ± = .94), RSE (10 items; ÃŽ ± = .737), and EAT-26 (26 items; ÃŽ ± = .791) (Appendix ). Procedure Before the commencement of questionnaire distribution, proper liaison was made by sending a formal letter to gain the permission from Centre for Foundation Studies (Perak Campus) to retrieve data on the population number of female Foundation students. After the permission was granted, the survey was conducted at Block B, C, and D of UTAR Perak Campus which Foundation students are majority gathers. The questionnaires were distributed manually to the potential participants. A consent form was attached to the questionnaire and the nature of the study was explained clearly to participants. The participants will not able to take part in the survey if they did not give the consent to the student researchers. Furthermore, the total score of EAT-26 (Section D) had been counted on the spot once the participant completed the questionnaire. Participants with a score of 20 or more or answered affirmatively to any of the behavioral questions had been suggested to seek evaluation from mental health professional. The questionnaires were collected from the participants with 100% response rate. Each questionnaire was checked to ensure there were balanced numbers of participants from both groups. The completed questionnaires were then later analyzed. Data Analysis Statistical Package for the Social Science (SPSS) Version 20.0 was used during the analysis of data. The demographic data was analyzed by using descriptive statistics to measure the mean, standard deviation, and frequency of age and body size group. The first research question was analyzed by mean and standard deviation on measuring the body image satisfaction level between thin and plump female Foundation students. Next, Independent Sample t-Test was used to test the second research question to determine the mean difference of body image satisfaction and eating attitudes between thin and plump female. Furthermore, the third and forth research question were tested by using Pearson’s Coefficient of Correlation on accessing the relationship between body image satisfaction with self-esteem and eating attitudes respectively to examine whether there is any positive or negative significant relationship between these variables. The level of significant difference (p-value) was adopte d at t-Test and References Shaughnessy, J. J., Zechmeister, E. B., Zechmeister, J. S. (2010). Research methods in psychology (9th ed.). New York, NY: McGraw-Hill. McGaghie, W. C., Bordage, G., Crandall, S., Pangaro, L. (2001). Method: Research design. Journal of the Association of American Medical Colleges, 76(9), 929-930. Patton, M. (1990). Qualitative evaluation and research methods [Adobe Digital Editions version]. Retrieved from http://legacy.oise.utoronto.ca/research/field-centres/ross/ctl1014/Patton1990.pdf Teddlie, C., Yu, F. (2007). Mixed method sampling: A typology with examples. Journal of Mixed Methods Research, 1(1), 77-100. Doi: 10.1177/2345678906292430 Serdar, K. L. (n.d.). Female body image and the mass media: Perspectives on how women internalize the ideal body standard. Retrieved from http://www.westminstercollege.edu/myriad/index.cfm?parent=2514detail=4475content=4795 Furnham, A., Badmin, N., Sneade, I. (2002). Body image dissatisfaction: Gender differences in eating attitudes, self-esteem, and reasons for exercise. The Journal of Psychology, 136(6), 581-596. Wimbish, T. R. (2009). Eating disorders, body-image dissatisfaction, and drive for muscularity in African American gay and straight men (Doctoral dissertation). Available from ProQuest Dissertations and Theses database. (UMI No. 3391518) Pook, M., Tuschen-Caffier, B., Brahler, E. (2008). Evaluation and comparison of different versions of the Body Shape Questionnaire. Psychiatry Research, 158, 67-73. doi:10.1016/j.psychres.2006.08.002 Garner, D. M., Olmstead, M. P., Bohr, Y., Garfinkel, P. E. (1982). The Eating Attitudes Test: Psychometric features and clinical correlates. Psychological Medicine, 12, 871-878.

Ancient Greece :: Ancient Greece Greek History

Ancient Greece This paper tells you about the Golden Age of Greece, which is from 500 to 350 BC. It tells about what Greeks did, who they worshipped, and other important things. The thing the Greeks are best known for, is their gods, and stories about them. The stories explained how things became. For instance, one story said that before the earth was made, there was a fight between a god, and a giant. The god killed the giant, and the parts of the giant became the earth. His teeth became the rocks, and his hair became the grass. His hands and feet became mountains, and his toes and fingers became trees. Some of the gods were Zeus, who was the ruler of all the gods, Hera was his wife, and Hermes was his messenger. Artemis was the goddess of the moon, and Apollo was the god of the sun. Poseidon was the god of the sea, Loki, the god of mischief, and, Dionysus, the god of wine. The Greeks, made sacrifices to the gods, so that the gods would honor them, and help them in times of trouble. They sacrificed animals, and other things that were special to them. The Greeks built temples, where they worshipped the gods. Each city had several temples, because each temple was used to worship one god. In each temple, there was a statue of a god that they worshipped. They had an extra big temple, and statue for the god that guarded their city. The Greeks had lots of heroes, who were like role models for their children. Hercules was the strongest man ever, and destroyed many monsters with his strength. Perseus had killed a monster called the Medusa. If someone looked at it, they would immediately turn to stone. Oddysseus beat the Trojans in the Trojan war, and on his way home, with his cunning, tricked, and killed many monsters. The Greeks are also known for their creativity, and knowledge in arts, such as making sculptures, music, and paintings. They made statues out of clay, gold, silver, and bronze. For instruments, they used harps and flutes. The Greeks had houses like us. All the houses had a kitchen, an eating nook, and a bedroom. The richer families had rugs, and decorations, such as vases, paintings, and tapestries. They also had a courtyard in the middle of the house, and in the courtyard was a well.

Synthesis of Cinnamaldehyde from Benzaldehyde

Vidallon, Mark Louis P. Date Performed: February 20, 2012 CHEM44. 1 2LDate Submitted: March 12, 2012 MIXED-ALDOL CONDENSATION Synthesis of Cinnamaldehyde I. Introduction Cinnamaldehyde, cinnamic aldehyde or 3-phenyl-2-propenal is the major constituent of cinnamon oil, extracted from several species of Cinnamomum (C. verum, C. burmanii, C. cassia), under the family Lauraceae, a group of evergreen trees. Cinnamon bark (particularly C. verum) yields 0. 4-0. % oil, which contains 60-80% cinnamaldehyde, 4-5% sesquiterpenoids (? -humulene, ? -caryophyllene, limonene and others), eugenol, cinnamyl acetate, eugenol acetate, cinnamyl alcohol, methyl eugenol, benzaldehyde, benzyl benzoate, cuminaldehyde, monoterpenes (linalool, pinene, phellandrene and cymene), safrole and others (List and Horhammer; Masada; Ravindran qtd. from Khan and Abourashed, 2011). Isolation of cinnamaldehyde from cinnamon oil of Cinnamomum sp. ark, called â€Å"quills†, â€Å"quillings†, â€Å"feathering s† and â€Å"chips† depending on quality, was first done in 1834 by Dumas and Peligot (Attokaran, 2011). It has been proven that cinnamaldehyde from cinnamon oil has a very high potential in the pharmaceutical industry, aside from its well known role in the food preparation, specifically as spice, odorant and colorant. Several researches have proven the antimicrobial activity of cinnamaldehyde against Salmonella typhimurium and Bacillus subtilis (Council of Europe, 2008).Also, cinnamaldehyde has been proven to inhibit microbial growth of opportunistic human pathogenic fungi, such as Aspergillus niger, Candida albicans and Rhizopus oligosporus, and various bacteria (Escherichia coli, Enterobacter cloacae, Micrococcus luteus, Staphylococcus aureus, Streptococcus faecalis, and others) (Khan and Abourashed, 2011). Several studies have also unraveled the hypoglycemic (insulin-like) and hypolipidemic properties of cinnamaldehyde since it can cause: elevated glucose oxidation and uptake, causing decrease in blood plasma glucose levels; decreased glycosylated hemoglobin, serum total cholesterol and riglyceride levels; increased plasma insulin, hepatic glycogen and high-density lipoprotein; and restored modified plasma enzyme concentrations to almost normal level (Babu, Prabuseenivasan and Ignacimuthu, 2006). Though effective approaches in the isolation of cinnamaldehyde from cinnamon oil from quills, low amounts of pure cinnamaldehyde can only be obtained from effective separation processes. Feature Article Relative Rates:  Free-Radical BrominationDue to this demarcation in the discovery and investigation of other potential medicinal and non-medicinal values of cinnamaldehyde, chemists have also developed synthetic procedures to obtain high amounts of pure cinnamaldehyde, one of which is the mixed aldol condensation of benzaldehyde and acetaldehyde. Mixed aldol condensation is a reaction of different aldehydes or ketones leading to the formation of aldols (? -hydroxyaldehydes) or ketols (? -hydroxyketones), accompanied by the removal of water to result finally to enals (? , ? -unsaturated aldehydes) or enones (? , ? -unsaturated ketones).Aldol additions are due to the reaction of enolate ions of carbonyl compounds (from the reaction of acidic ? -hydrogens of aldehydes and ketones with bases) with the electrophilic centers of other carbonyl compounds. Synthesized aldols and ketols can dehydrate spontaneously or can be dehydrated, especially when heated, to form enals an d enone, the final product(s) of aldol condensations (Moore and Langley, 2010). Possible side reactions were the Canizzarro reaction of benzaldehyde and the self-condensation of acetaldehyde. Minimization of the possibilities of the stated reactions was done by following a special scheme of procedure.Characterization tests that were done in to confirm the identity of the products are boiling point determination, reactions with nitric acid and with sodium bisulfite and derivatization with 2,4-dinitrophenylhydrazine. In the experiment conducted, the objectives of the author were as follows: 1. To synthesize cinnamaldehyde from the base-catalyzed mixed aldol condensation of benzaldehyde and acetaldehyde; and 2. To characterize the synthesized product using its boiling point, results of simple chemical tests and derivatization reactions, along with the determination of the elting points of the hydrazones and comparison of the hydrazones using their RGB values. II. Materials and Methods A. Reagents The following are the reagents were used in the experiment: Benzaldehyde Acetaldehyde 15% sodium hydroxide solution Sodium chloride 95 % ethanol solution 40% sodium bisulfite solution 2, 4-dinitrophenylhydrazine Nitric acid Ice B. Apparatus and Equipment The following are the apparatus and equipment were used in the experiment: 50-mL round-bottom flask 50-mL beaker 10-mL graduated cylinder 10-mL pipet Pasteur pipet Micro distilling flask Test tubes Evaporating dish Thermometer Bunsen burnerMicroreflux Watch glass Iron ring Iron clamp Iron stand Separatory funnel Wire gauze Hot plate Electronic top loading balance Fisher-Johns melting point apparatus III. Schematic Diagrams C. Synthesis of Cinnamaldehyde (in round-bottom flask) 3. 06mL – cool in ice bath + 3. 00mL 15% NaOH + 0. 50mL dropwise with swirling + 3. 00mL 15% NaOH + 0. 50mL dropwise with swirling + 3. 00mL 15% NaOH + 0. 68mL dropwise with swirling – reflux for 10-15 minutes – cool to room te mperature – cool in ice bath – separate layers Organic layer , very minimal (in 10-mL graduated cylinder) Aqueous layer very minimal, unreactedH2O with Na+ and Cl- Measure amount and save for characterization discard D. Characterization 1. Boiling Point Determination Product (in distilling flask) – distill Note temperature at which liquid starts to boil 2. Reaction with Nitric Acid (Test for presence of benzene ring) 1-2 drops of test compound1 (in test tube) + 1-2 drops HNO3 Observe visible changes and temperature changes 3. Reaction with Sodium Bisulfite (Test for presence of carbonyl compounds) 4. 0mL 40% NaHSO3 + 1. 0mL ethanol – filter Residue Filtrate Save and label â€Å"alcoholic NaHSO3† 1-2 drops of test compound1 (in test tube) + 1-2 drops alcoholic NaHSO3Observe visible changes 4. Derivatization with 2, 4-Dinitrophenylhydrazine 1-2 drops of test compound1 (in test tube) + 4. 0mL ethanol + 3. 0mL – filter – recrystallize usi ng 95% ethanol Colored hydrazone crystals Determine melting point and RGB values Compared appearance, melting points and RGB values with other hydrazones 5. Combustion Test 2-4 drops of test compound1 (in evaporating dish) – flame carefully using Bunsen burner flame Observe flammability, flame color and sootiness and compared with other test substances 1 Compounds to be tested are: cinnamaldehyde (product), benzaldehyde and acetaldehyde.IV. Data and Results Table 1. Observations on the synthesis of cinnamaldehyde. Reagent/Action Taken| Observations| Benzaldehyde| Clear, colorless, dense liquid| Acetaldehyde| Clear, colorless liquid| Sodium hydroxide| Colorless liquid| Benzaldehyde + NaOH| White mixture| Mixture + dropwise addition of acetaldehyde| Yellow oil (upper layer) and off-white lower layer| Reflux| Dark brown, opaque, viscous liquid mixture| Cooling| Formation of layers| Extraction:| | Organic layer| (Upper) Dark brown, opaque viscous liquid with cinnamon scent| Aqueo us layer| (Lower) Light brown, translucent liquid|Product| Dark brown, opaque viscous liquid with cinnamon scent| Table 2. Percent yield of the synthesis of cinnamaldehyde. Compound| Amount (mL)| Benzaldehyde| 3. 06| Acetaldehyde| 1. 68| Cinnamaldehyde:| | Theoretical| 3. 78| Experimental| 3. 46| % Yield| 91. 6 %| Table 3. Boiling points of compounds used and synthesized in the experiment. Compound| Boiling point (oC)| Benzaldehyde| 179| Acetaldehyde| 65-82| Cinnamaldehyde:| | Theoretical| 250-252| Experimental| Decomposed| Table 4. Results of the characterization tests of the product and reactants. Compound| Reaction with HNO3| Reaction with NaHSO3| Observations| (+/-)| Observations| (+/-)| Benzaldehyde| Yellow-orange liquid;Heat production | + | White precipitate | + | Acetaldehyde| Clear, colorless liquid (N. R. ) | – | White precipitate | + | Cinnamaldehyde| Two layers: opaque, dark brown (upper) and translucent, chocolate brown (lower) | + | Brown precipitate | + | Table 5. Results of the derivatization with 2,4-DNP. Compound| Observations| Melting point of hydrazone (oC)| Mean RGB Values (in hexadecimal)| | | Theoretical| Experimental| | Benzaldehyde| Orange yellow solids| 255. 25| 218| E7B01A| Acetaldehyde| Crimson red solids| 221. 6| 174| C75B34| Cinnamaldehyde| Red orange solids| 267. 76| Decomposed| AF6D21| Table 6. Observations on the combustion test of the reagents and the product. Compound| Flammability| Flame color| Sootiness| Benzaldehyde| Flammable| Orange| Sooty| Acetaldehyde| Moderately flammable| Blue| Very sooty| Cinnamaldehyde| Very flammable| Orange| Extremely sooty with black residue| Sample Calculations: V benzaldehyde = mol benzaldehyde ? MW benzaldehyde ? 1/? benzaldehyde V benzaldehyde = (0. 03 mol)(106. 12 g/mol)(1. 00 mL/1. 0415 g) V benzaldehyde = 3. 06 mL V acetaldehyde = mol acetaldehyde ?MW acetaldehyde ? 1/? acetaldehyde V acetaldehyde = (0. 03 mol)(44. 05 g/mol)(1. 00 mL/0. 788 g) V acetaldehyde = 1. 68 mL Theoretical yield = mol cinnamaldehyde ? MW cinnamaldehyde ? 1/? cinnamaldehyde Theoretical yield = (0. 03 mol)(132. 16 g/mol)(1. 00 mL/1. 05 g) Theoretical yield = 3. 776 mL %Yield = (3. 46 mL/3. 776 mL) ? 100% %Yield = 91. 6% Maximum loss by solvation V cinnamaldehyde = ? cinnamaldehyde ? solubility in H2O ? V water V cinnamaldehyde = (1. 00 mL/1. 05 g)(4. 09? 10-4 g/mL)[9. 00 mL+(0. 030 mol)(18. 016 g/mol)](1. 00 mL/g) V cinnamaldehyde = (1. 00 mL/1. 05 g) (4. 09? 0-4 g/mL)(9. 54 mL) V cinnamaldehyde = 3. 72? 10-3 mL %Loss by solvation = (V cinnamaldehyde lost/ Theoretical yield) ? 100% %Loss by solvation = (3. 72? 10-3 mL/3. 776 mL) ? 100% %Loss by solvation = 0. 098% V. Discussion Cinnamaldehyde, cinnamic aldehyde or 3-phenyl-2-propenal is the dominant component of cinnamon oil, extracted from several species of Cinnamomum (C. verum, C. burmanii, C. cassia), under the family Lauraceae, a group of evergreen trees. Cinnamon bark (particularly C. verum) yields 0. 4-0. 8% oil, which contains 6 0-80% cinnamaldehyde (List and Horhammer; Masada; Ravindran qtd. rom Khan and Abourashed, 2011), which was first isolated in 1834 by Dumas and Peligot (Attokaran, 2011). It has been proven that cinnamaldehyde from cinnamon oil has a very high potency in the field of medicine, aside from its well known role in the cooking and baking, specifically as spice, odorant and colorant. Several researches have explained and proven the anti-diabetic properties of cinnamaldehyde (Babu, Prabuseenivasan and Ignacimuthu, 2006); also, studies have shown the antimicrobial activity of cinnamaldehyde against Salmonella typhimurium and Bacillus subtilis (Council of Europe, 2008).Cinnamaldehyde has been proven to inhibit microbial growth of opportunistic human pathogenic fungi and various bacteria (Khan and Abourashed, 2011). Though effective approaches in the isolation of cinnamaldehyde from cinnamon oil from quills, low amounts of pure cinnamaldehyde can only be obtained from effective separation proc esses. Due to this demarcation in the discovery and investigation of other potential medicinal and non-medicinal values of cinnamaldehyde, chemists have also developed synthetic procedures to obtain high amounts of pure cinnamaldehyde, one of which is the mixed aldol condensation of benzaldehyde and acetaldehyde.The synthesis of cinnamaldehyde through mixed-aldol condensation was done by mixing, in a cooled microreflux, benzaldehyde, portions of 15% sodium hydroxide solution and acetaldehyde, added in a dropwise manner, and then refluxing the mixture for 15-20 minutes. Isolation of the synthesized cinnamaldehyde was done simply by separating the water insoluble cinnamaldehyde layer from the aqueous layer. Aldol condensation is the reaction of aldehydes and/or ketones leading to the formation of ? -hydroxyaldehydes (aldols) or ? hydroxyketones (ketols), also known as the aldol addition, accompanied by the removal of water molecule (dehydration) from these compounds result finally to enals (? , ? -unsaturated aldehydes) or enones (? , ? -unsaturated ketones) (Moore and Langley, 2010; McMurry and Simanek, 2008; Fox and Whitesell, 2004). Aldol additions are due to the reaction of enolate ions of carbonyl compounds (from the reaction of acidic ? -hydrogen atoms of aldehydes and ketones with bases) with the electrophilic centers of other carbonyl compounds.Dehydration, which can be spontaneous due to formation of a more conjugated system or promoted by heating, then leads to the generation of the ? , ? -unsaturated carbonyl compounds as the final product of the aldol condensation (McMurry and Simanek, 2008; Fox and Whitesell, 2004). Aldol condensations can be classified as simple and mixed-(or cross-) aldol condensation. The difference between the two classifications is that simple aldol condensation utilizes only one aldehyde or ketone substrate while the mixed-aldol condensation uses two different carbonyl compounds as the substrate for the reaction (Fox and White sell, 2004).The mixed-aldol condensation was type of reaction employed in the experiment; however, simple aldol condensation, also known as self-condensation was one of the expected side reactions in the conducted study. The general equation for the synthesis of cinnamaldehyde was: The mechanism of the synthesis reaction can be proposed as: 6. Formation of ethenolate ion nucleophile 7. Aldol addition: Formation of 3-hydroxy-3-phenylpropanal 8. Dehydration: Formation of cinnamaldehyde The initial step done in the experiment was combining 3. 06 milliliter benzaldehyde with three 3. 0 milliliter portions of 15% sodium hydroxide with dropwise addition of 1. 68 milliliter acetaldehyde while swirling the mixture, which was in the microreflux, dipped in an ice bath. Benzaldehyde, followed by 3. 00-milliliter portion of 15% sodium hydroxide solution, was first put into the microreflux instead of the acetaldehyde to prevent acetaldehyde from undergoing self-condensation with the following ge neral equation: Compared to acetaldehyde, benzaldehyde has no 3 ? -hydrogen atoms, which can react with the nucleophile, hydroxide ions, to form a strong nucleophile, the ethenolate ion.Ethenolate ions can attack acetaldehyde instead of attacking benzaldehyde. Thus, benzaldehyde, which can remain as it is in sodium hydroxide, was put in first until the formation and attack of the nucleophile, which was formed right after acetaldehyde was dropped into the reaction mixture. The following is the mechanism of the self-condensation of acetaldehyde, which was minimized by the procedure carried out: Addition of 3. 00-milliliter portions of 15% sodium hydroxide solution, a dilute base, was done to compensate for the combination of benzaldehyde and sodium hydroxide, before adding acetaldehyde.Benzaldehyde reacts with strong, concentrated bases to form benzenecarboxylate and hydroxymethylbenzene; this is known as the Canizzarro reaction. Canizzarro reaction (mechanism shown below) was minimiz ed by the addition of the strong base in small portions, before adding the acetaldehyde, and using a dilute solution of it. Cooling of the mixture in ice bath was done to favor the reaction aldol condensation of benzaldehyde and acetaldehyde, a spontaneous reaction due to the higher degree of conjugation of the product, while disfavoring the self-condensation of acetaldehyde, a heat-requiring reaction (Fox and Whitesell, 2004).Dropwise addition of the enolizable compound, acetaldehyde, was performed to minimize the drastic formation of ethenolate ions while unreacted acetaldehyde molecules still exist in the mixture. The phenomenon was prevented since it would have entailed the self-condensation of acetaldehyde, which could have caused lower yield in the experiment since the reagent would have been consumed in the unnecessary reaction just stated. The microreflux was shaken while the mixture was still being prepared to distribute the ethenolate ions formed though the mixture for the m to react with the electrophile, benzaldehyde.This procedure was also done to minimize the possibility of the self-condensation of acetaldehyde since the ethenolate ions generated were expected to have reacted with benzaldehyde since they were distributed with the aid by shaking before the next drop of acetaldehyde came in contact with mixture. Furthermore, since the reaction mixture was cold, the reaction was expected to be slow; thus, shaking can compensate for the slow movement of molecules and ions in the mixture by somehow supplying the energy needed for the slow-moving benzaldehyde molecules and ethenolate ions to collide.Refluxing was done to: (1) react the still unreacted benzaldehyde molecules and ethenolate ions; and (2) promote the dehydration of the 3-hydroxy-3-phenylpropanal to finally form the 3-phenyl-2-propenal or the cinnamaldehyde. Refluxing intimately mixes substances by increasing the contact between the reactant particles through boiling and evaporation, follow ed by the condensation in the reflux condenser (due to the removal of heat by the cold water flowing in the condenser) and restoration of the synthesized compound and the little (expected) amount of the unreacted reagents on their original vessel (Mayo, Pike and Forbes, 2001).Refluxing the mixture was very advantageous to the conducted experiment since it ensured higher yield and faster dehydration of the 3-hydroxy-3-phenylpropanal, though the stated reaction was expected to be spontaneous due to the higher degree of conjugation of the product (3-phenyl-2-propenal) compared to the 3-hydroxy-3-phenylpropanal. The synthesized cinnamaldehyde was readily separable (solubility of cinnamaldehyde in water=4. 09? 10-4gram/milliliter) with the lower aqueous layer; however, cooling of the mixture was done first to decrease the solubility of the cinnamaldehyde to achieve higher recoverable amount of the product.Liquid-liquid extraction to recover the solvated cinnamaldehyde was not done since the maximum amount of solvated cinnamaldehyde was just 0. 098% of the theoretical yield (see Sample Calculations), thus the recovery of such little amount of product would be wasteful in terms of effort and reagents. Graduated cylinder was used directly as the receiver of the organic layer separated to determine right away the amount of synthesized cinnamaldehyde. The determination of the amount of product in this kind of manner was performed to minimize the loss of products due to the adherence of the very viscous product on the sides of different containers.The amount of the synthesized cinnamaldehyde was found to be 3. 46 milliliter, 91. 6% of the theoretical yield which was computed as 3. 776 milliliter. Possible sources of error in the experiment were: the losses of minimal amount of reagents due to their adherence on the sides of the Pasteur pipets and 50-milliliter beakers; and the losses of the synthesized cinnamaldehyde caused by its adhesion on the sides of the microreflux , surface of the boiling chip and the inside surface of the separatory, caused by the high viscosity of cinnamaldehyde.The lack of further purification process on the cinnamaldehyde, which could still contain traces of benzaldehyde, acetaldehyde and other side products, could also be a factor, leading to the incorrectness of the results of the experiment. The synthesized cinnamaldehyde was expected to be constituted of the cis- and trans- diastereomers; however, it was expected that the trans-isomer was the major component of the product. The reason for the claim was that higher possibility of existence of its trans-isomer-forming transition state conformation compared to the cis-isomer-forming transition state conformation.Elimination to a trans double bond from the staggered conformation of the 3-hydroxy-3-phenylpropanal transition state, wherein the carbonyl group and the phenyl group are in the anti position to minimize the steric effects on the molecule, was still favored, thou gh the carbonyl group is relatively small, compared to the energetically less stable gauche conformation (due to steric interactions of the carbonyl group and the large phenyl group) of the 3-hydroxy-3-phenylpropanal, which can cause the cis-isomer formation (Carey and Sundberg, 2001). (a)(b) Figure 1.Balls and sticks representation of 3-hydroxy-3-phenylpropanal in the conformations for the formation of (a) trans-cinnamaldehyde and (b) cis-cinnamaldehyde. Carbon 2 shadows carbon 3 to show the anti-conformation in (a) and the gauche conformation in (b) of the phenyl and the carbaldehyde groups. Further proof that the formation of the trans-cinnamaldehyde was favored in the reaction was the coplanar arrangement of the highly conjugated aldol condensation product. According to Fox and Whitesell (2004), extended conjugation of the benzene ring with the alkene double bond and carbon-oxygen double bond of the carbonyl group in the ? ? -unsaturated aldehyde product leads to the flat, copla nar arrangement of the product. The p orbital overlap of extensive ? system of the carbonyl group and the alkene is greatest as the ? systems arrange in a single plane, which leads to higher stability of the molecule in terms of the conjugation present. Having a flat product would cause the increased torsional strain on the molecule due to the very close distance of the carbonyl group and the benzene ring. Therefore, cis-benzaldehyde, given the stated situation, is highly unstable and is not preferentially formed over trans-benzaldehyde. (a) (b) Figure 2.Balls and sticks representation of (a) trans-cinnamaldehyde and (b) cis-cinnamaldehyde, viewed at different perspectives to show the differences in the flatness of the two molecules that contribute to their stabilities. Possible side reactions in the experiment conducted were the self-condensation of acetaldehyde and Canizzarro reaction as previously stated along with the preventive measures exercised to minimize their occurrence. S elf-condensation of acetaldehyde was expected to be greatly minimized by the procedure employed and the fact that it is energetically unfavorable, according to Fox and Whitesell (2004).Furthermore, even if the reaction took place, it would have been very minimal since it is a reversible reaction, which was competed with a more favorable reaction that is followed by an irreversible somehow spontaneous dehydration reaction. Depletion of the ethenolate ions (due to the consumption in the addition of benzaldehyde and ethenolate ions, then conversion of the intermediate to cinnamaldehyde) causes the competing self-addition of acetaldehyde to proceed backwards, forming back the acetaldehyde and ethenolate ions, which can be consumed in the aldol condensation of cinnamaldehyde and acetaldehyde.Simple distillation was done to determine the boiling point of the synthesized cinnamaldehyde; however, decomposition was observed in the middle of the procedure, causing the failure of the melting p oint determination attempt; but supported that it was possible that cinnamaldehyde. The observed decomposition can be attributed to the instability of cinnamaldehyde, usually denoted by thickening and decomposition, when exposed for a long time to air at elevated temperatures but lower than its boiling point (>70 °C) (Gholivand and Ahmadi, 2008).Decomposition of natural cinnamaldehyde, however, is not observable in baking and cooking due to the presence of eugenol impurities on cinnamon oil, which has antioxidative properties that protect cinnamaldehyde from heat-induced decomposition (â€Å"Cinnamaldehyde Content†). The chemical tests performed were reaction with nitric acid, formation of the sodium bisulfite addition complex and derivatization with 2, 4-dinitrophenylhydrazine.Reaction with nitric acid is a test for the differentiation of aromatic and aliphatic aldehydes. Aromatic aldehydes undergo nitration with concentrated nitric acid under normal conditions. Positive t est results can are color changes and/or heat production. The general equation for the nitration of aromatic aldehydes is: Results of the reaction with nitric acid were shown in Table 4. Figure 3. Test results for the reaction of nitric acid with acetaldehyde (left), benzaldehyde (middle) and cinnamaldehyde (right).Positive test results were observed with benzaldehyde and with cinnamaldehyde by the production of colored mixtures, yellow and brown, respectively, accompanied by heat production as shown by the following specific mechanism: 1. Formation of nitrosonium ion 2. Electrophilic addition of the nitrosonium ion to the aromatic aldehyde (a) Cinnamaldehyde Ortho attack Para attack (b) Benzaldehyde (Meta attack) (c) Acetaldehyde Reaction with alcoholic sodium bisulfite solution is a confirmatory test for aldehydes and ketones, having the following reaction and mechanism: Mechanism:Results of the reaction of the compounds with alcoholic sodium bisulfite solution were listed in Tabl e 4. Positive results were observed with acetaldehyde, benzaldehyde and cinnamaldehyde, which were denoted by the formation of transparent accumulation which turned to white precipitate, white precipitate and brown precipitate, respectively. Figure 4. Test results of the reaction of alcoholic sodium bisulfite with cinnamaldehyde (left), benzaldehyde (middle) and acetaldehyde (right). Sodium bisulfite addition complexes were the observed precipitates of the following reactions:Derivatization with 2, 4-dinitrophenylhydrazine was done to support the identity of the cinnamaldehyde by the determination of the melting point of the hydrazone formed in the derivatization since the boiling point of the cinnamaldehyde was impractical to measure given that it is relatively high and the product, being impure can undergo decomposition. Derivatization with 2, 4-dinitrophenylhydrazine was performed by dissolving the test compound (cinnamaldehyde, acetaldehyde and benzaldehyde) in 4. 00 milliliter of ethanol and adding 3. 0 milliliter 2, 4-dinitrophenylhydrazine solution. The formed precipitate was then filtered and then recrystallized using minimum amount of 95% ethanol solution. The general equation and the mechanism of the reaction can be proposed as: Mechanism: Results of the derivatization, with 2, 4-dinitrophenylhydrazine, were shown in Table 5. The following are the equations for the derivatization of each aldehyde with 2,4-DNP in the experiment: Colors of the derivatives obtained were qualitatively different due to the differences in their degrees of conjugation.Decomposition of the cinnamaldehyde hydrazone was observed, which hindered the determination of the melting point of the hydrazone. Deviations from theoretical melting point values of the two other hydrazones were observed on the experimental melting points gathered. The observed discrepancies maybe ascribed to the efficiency of the Fisher-Johns melting point apparatus and/or the quality of the reagents (benza ldehyde, acetaldehyde and 2, 4-dinitrophenylhydrazine) used.To compensate for the failure in the melting point determination of the cinnamaldehyde hydrazone, the RGB (Red, Blue, Green) values or the web color keywords used by computer monitors to generate colors (McFarland, 2009), of the three hydrazones were determined and tested for significant differences using Analysis of Variance (ANOVA). Figure 5. Isolated and purified hydrazones of benzaldehyde (left), acetaldehyde (middle) and cinnamaldehyde (right). Mean RGB values obtained for cinnamaldehyde, acetaldehyde and benzaldehyde were shown in Table 5.Results of the Analysis of Variance revealed significantly differences among the red values and among the green values of the three hydrazones and no significant differences among the blue values of the hydrazones. Having significantly different values on at least one of the RGB values proves that the composition of the hydrazones was significantly different, thus implying that the p robable presence of benzaldehyde and acetaldehyde in the product was negligible and that cinnamaldehyde can be the compound present.Results of the combustion test were shown in Table 6. Combustion is a chemical reaction between a substance and oxygen that proceeds with the evolution with heat and light as flame (Stoker, 2009). It can be complete, where all of the substance totally undergoes combustion with carbon dioxide and water as the product (general) or incomplete, caused by several factors, which brings about carbon monoxide and elemental carbon formation (soot).Observed differences in the sootiness of acetaldehyde, benzaldehyde and cinnamaldehyde were due to the differences in the number of carbon atoms and the differences in the degrees of unsaturation of the molecules of each of the compounds. Incomplete combustion is generally observed in long chain hydrocarbons and other organic compounds given that oxygen is limited (Johnson, 1999; Macomber, 1996) since oxygen is consume d along with the carbon of the organic compound to produce carbon dioxide while hydrogen atoms are utilized, also along with oxygen, to produce water.Furthermore, unsaturated organic compounds (having as much carbon-carbon double bond) favors incomplete combustion since the number of carbon atoms is relatively higher than the number of hydrogen atoms; excess carbon atoms cannot be used up in the combustion process to produce carbon dioxide (when oxygen supply limited) and thus soot forms (Lister and Renshaw, 2000). It has been show in the balanced equations of the combustion each compound that cinnamaldehyde requires the highest amount of oxygen, followed by benzaldehyde and, lastly, by acetaldehyde.Given that, in the combustion test conducted, oxygen supply was almost uniform among the three, soot formation was predicted to be observed more prominently on cinnamaldehyde (product), followed by benzaldehyde and lastly by acetaldehyde due to the amount of carbon atoms and the relative number of unsaturations on each molecules. The same arrangement was also the experimental arrangement of the compounds with respect to the observed degrees of sootiness after the carried out combustion test.The structure of cinnamaldehyde was supported by the positive reaction of cinnamaldehyde with nitric acid and with alcoholic sodium bisulfite. Though it can be inferred that the detected compound can also be benzaldehyde, the cinnamaldehyde color (yellow to brown), viscosity and the cinnamon aroma of the compound (which are qualitatively different from the color, viscosity and odor of benzaldehyde), the characteristic decomposition of cinnamaldehyde below its boiling point and the results of the combustion test can be used as further evidence of the identity of the compound produced.Possible sources of error in the experiment were the quality of the reagents used, intervals of dropping acetaldehyde on the mixture, lack of further purification process, lack of more evident physic al and chemical characterization method for the product, efficiency of the melting point apparatus utilized and the storage of cinnamaldehyde product for too long prior to derivatization. I. Summary and ConclusionThe special synthesis experiment, entitled â€Å"Mixed-Aldol Condensation: Synthesis of Cinnamaldehyde†, was conducted to synthesize cinnamaldehyde from the base-catalyzed mixed aldol condensation of benzaldehyde and acetaldehyde; and characterize the synthesized product using its boiling point, results of simple chemical tests and derivatization reactions, along with the determination of the melting points of the hydrazones and comparison of the hydrazones using their RGB values.The synthesis of cinnamaldehyde through mixed-aldol condensation was done by mixing, in a cooled microreflux, benzaldehyde, portions of 15% sodium hydroxide solution and acetaldehyde, added in a dropwise manner, and then refluxing the mixture for 15-20 minutes. Isolation of the synthesized c innamaldehyde was done simply by separating the water insoluble cinnamaldehyde layer from the aqueous layer. Determination of the volume of the synthesized substance was then performed.Chemical test carried out were test for aromatic ring (reaction with nitric acid), test for aldehydes (reaction with alcoholic sodium bisulfite) and derivatization with 2, 4-dinitrophenylhydrazine while the physical characterization test done were boiling point determination using simple distillation and melting point determination of the derivatized hydrazones. RGB values of the isolated and recrystallized hydrazones were obtained and tested for significant differences using Analysis of Variance (ANOVA). It was shown that positive test results were exhibited by cinnamaldehyde and benzaldehyde in their reactions with nitric acid.It was also shown that positive test results were displayed by cinnamaldehyde, benzaldehyde and acetaldehyde in their reactions with alcoholic sodium bisulfite. The boiling po int of the isolated product and the melting point of the cinnamaldehyde hydrazone were not obtained due to the decomposition of the stated compound. However, RGB values of the hydrazones were obtained. Results of the Analysis of Variance of the RGB values of the hydrazones revealed significantly differences among the red values and among the green values and no significant differences among the blue values of the hydrazones.Based on the results, it can be concluded that that synthesized product was different from the starting materials and that it was possible that the product was cinnamaldehyde due to the highly colored hydrazone formed. Though chemical tests were successfully done, boiling point determination of the product and melting point determination of its hydrazone were unsuccessfully performed due to the decomposition of both product and its hydrazone; however, chemical tests done and physical properties exhibited by the compound were considerable as enough indicant of the identity of the compound.Based on the readily perceivable physical characteristics of the compound produced and the results of the chemical tests performed and observed, it can be concluded that the synthesized compound was genuinely cinnamaldehyde. Based on the results of the experiment, it was proven that cinnamaldehyde, constituted primarily of trans-cinnamaldehyde, with a percent yield of 91. 6%, was successfully synthesized using the described procedure of the student.Furthermore, the procedure constructed and performed was proven to have minimized the possible side reactions which could have impeded the yield, physical properties and authenticity of the executed chemical tests. Possible sources of error in the experiment were the quality of the reagents used, intervals of dropping acetaldehyde on the mixture, lack of further purification process, lack of more evident physical and chemical characterization method for the product, efficiency of the melting point apparatus utili zed and the storage of cinnamaldehyde product for too long rior to derivatization. II. References ABOURASHED EA and KHAN IA. 2011. Leung’s Encyclopedia of Common Natural Ingredients: Used in Food, Drugs and Cosmetics. Germany: J. Wiley and Sons. ATTOKARAN M. 2011. Natural Food Flavors and Colorants. Germany: J. Wiley and Sons. BABU P, PRABUSEENIVASAN S and IGNACIMUTHU S. 2006. Cinnamaldehyde: A Potential Antidiabetic Agent. Phytomedicine. 1:15-22. CAREY FA and SUNDBERG RJ. 2001. Advanced Organic Chemistry Part B: Reactions and Synthesis. 4th Ed. USA: Plenum Publishers. COUNCIL OF EUROPE. 008. Natural Sources of Flavorings. France: Council of Europe. FOX MA and WHITESELL JK. 2004. Organic Chemistry. 3rd Ed. USA: Jones and Bartlett Publishers. GHOLIVAND MB and AHMADI F. 2008. Simultaneous Determination of Trans-Cinnamaldehyde and Benzaldehyde in Different Real Samples by Differential Pulse Polarography and Study of Heat Stability of Trans-Cinnamaldehyde. Analytical Letters. 41: 3324-3341. JOHNSON W. 1999. Invitation to Organic Chemistry. USA: Jones & Bartlett Learning. LISTER T and RENSHAW J. 2000.Understanding Chemistry for Advanced Level. China: Nelson Thornes. MACOMBER R. 1996. Organic Chemistry. USA: University Science Books. MAYO D, PIKE R. and FORBES, D. 2001. Microscale Organic Laboratory: With Multistep and Multiscale Syntheses. USA: John Wiley and Sons, Inc. MCFARLAND, DS. 2009. CSS: The Missing Manual. 2nd Ed. USA: O’Reilly Media Inc. MCMURRY J and SIMANEK E. 2008. Fundamentals of Organic Chemistry. 6th Ed. Singapore: Thomson Learning. MOORE JT and LANGLEY RH. 2010. Organic Chemistry II for Dummies.USA: Wiley Publishing. STOKER S. 2009. General, Organic and Biological Chemistry. USA: Cengage Learning. â€Å"Cinnamaldehyde Content Foods Determined Gas Chromatography-Mass Spectrometry†. Retrieved from APPENDIX A Randomly Selected RGB Values of Different Hydrazones Table 7. Sample RGB values of acetaldehyde, benzaldehyde and cinnamald ehyde hydrazones and their mean values. Sample No. Acetaldehyde| Benzaldehyde| Cinnamaldehyde| | Red| Green| Blue| Red| Green| Blue| Red| Green| Blue| 1| 202| 90| 52| 203| 168| 25| 185| 107| 22| 2| 189| 85| 50| 239| 170| 17| 173| 106| 53| 3| 195| 97| 58| 233| 185| 25| 185| 114| 22| 4| 206| 101| 54| 236| 171| 43| 174| 102| 18| 5| 199| 80| 40| 232| 176| 19| 173| 109| 37| 6| 201| 81| 57| 236| 181| 29| 174| 123| 40| 7| 201| 99| 59| 236| 179| 28| 170| 103| 24| 8| 198| 92| 42| 232| 178| 18| 164| 105| 45| Mean Values (decimal)| 199| 91| 52| 231| 176| 26| 175| 109| 33| Mean Values (hexadecimal)| C7| 5B| 34| E7| B0| 1A| AF| 6D| 21|APPENDIX B Analysis of Variance (ANOVA) of the RGB Values of the Hydrazones RED Source| DF| SS| MS| FC| FTAB| Treatment| 2| 12682. 75| 6341. 375| 90. 76086216| 3. 466800112| Error| 21| 1467. 25| 69. 86904762| | | Total| 23| 14150| | | | GREEN Source| DF| SS| MS| FC| FTAB| Treatment| 2| 32406. 08| 16203. 04| 328. 5193| 3. 4668| Error| 21| 1035. 75| 49. 32143| | | To tal| 23| 33441. 83| | | | BLUE Source| DF| SS| MS| FC| FTAB| Treatment| 2| 2888. 083| 1444. 042| 1. 039985| 3. 4668| Error| 21| 29158. 96| 1388. 522| | | Total| 23| 4899. 958| | | |