Romanesque Art Essay Example | Topics and Well Written Essays - 750 words

Romanesque Art - Essay Example The St.-Sernin Church in Toulouse utilizes architectural designs that evidently reference the crusade and the triumph of the Crusaders. It is a Romanesque design church located along boulevards that lead to the Santiago de Compostela in Spain. Apparently, the church is believed to have been built with a design that can accommodate a huge number of stray worshippers that were believed to flee the Islamic world after the successful execution of the crusade. Moreover, it has a transept and a long domed nave that was intended to circumvent the hazard of fire, which was a major factor threatening the existence of wooden churches during the 12th century. Apparently, the church is built in the design of a Latin cross connoting the raising of the Roman cross after successfully capturing areas that were under Islamic control prior to the crusade. The construction of the large basilica was in the perpetuation of a tradition that was initiated by early Christians and marks a revolutionary point in the Romanesque art as it reflects the incorporation of new, unique, strong and sustainable designs in that contributes to the wholeness of structures (Brommer 122). Additionally, the painting of Saint-Front has connoted the coming of a war as it made it apparent that it was the Christians authority to fight a war for the expansion of their kingdom and influence; building structures that could accommodate more of them and force more into the structures (Brommer 182).

Informal Settlement in Johannesburg Research Paper

Informal Settlement in Johannesburg - Research Paper Example With each single factor in a community contributing to the general quality of life of each and every individual residing there. Dr. Trevor Dummer stated that: â€Å"Geography and health are intrinsically linked. Where we are born, live, study and work directly influences our health experiences: the air we breathe, the food we eat, the viruses we are exposed to and the health services we can access†. (Health Geography: Supporting Public health, Policy and Planning, 2008) Richards, et al. (2006) indicated in his paper, that according to the World Health Organization, â€Å"deficiency of water, electricity, sanitation, ventilation, food preparation and storage in informal dwellings are associated with a range of health risks and diseases.† This paper tackles the effects of the state of living and the situation of the informal settlers’ community in Johannesburg in Africa on a person’s or a resident’s physical and mental health. Specifically, this paper discusses the informal settlers’ situation in Johannesburg, Africa and its effects on the settlers’ health, thus, aiming to try to help establish a correlation between diseases and location, prevalence and how diseases spread, a main concern in the study of health geography. REVIEW OF LITERATURE According to Mathee et al (2009), urbanization is currently taking place in areas of concentrated disadvantage, meaning in areas where large numbers of urban dwellers congregate and live in informal settlements. Jo Vearey, in the book Migration and Inequality (2013) stated that South Africa which has long been associated with the movement of people and cross-border migration was related to labor migration within the agricultural and mining sectors. Migration into South Africa has increased since the end of apartheid and Johannesburg is one of the cities that became a destination for people from different parts of the country and even from outside the continent. In Johannesburg where the population is composed of 3.2 million individuals, inequality among inhabitants is rapidly growing. And because of rapid urbanization, housing and other services proves to be challenging which results to poor households still living in informal settlements, and occupying small brick and corrugated iron backyard dwellings and derelict inner-city buildings (Mathee, et. al. 2009). Few et al. (2004) stated that in the late 1980s to early 1990s, industrial buildings such as offices, factories, warehouses and bakeries were converted and taken over for residential purposes, with 5% of the dwellings found to be overcrowded, with some buildings housing as many as 72 people. He further stated that these dwellings often have very small rooms, densely occupied, having poor or no ventilation and insulation, lacking privacy, with inadequate lighting or light sources, having common access and circulation routes and generally have inadequate sanitation facilities and water supply. Johann esburg is considerably young, having been only established in the 1880s as an off-shoot to the discovery of gold in the area. The city is an interesting area to study African urbanization relationships pertaining to health, inequality and migration. Informal urban locales are generally associated with significant health concerns and consequences as informal settlements are recognized to be important and related to migration in cities (Migration and Ineq

The Axis I and Axis II Disorders of Mental Health in Movie Bastard out Review

The Axis I and Axis II Disorders of Mental Health in Bastard out of Carolina - Movie Review Example The most common type of disorder the character "Bone" had; cognitive disorder, development disorder, mood disorder and schizophrenia, Major mental disorders, and learning disabilities; depression, anxiety disorders, bipolar disorder, ADHD. Clinical disorder: clinical disorder faced by the character Bone, due to her birth certificate stamped with the word "legitimate". For no apparent reason, Bone's stepfather will see fit to drag Bone into the bathroom and flog her degradingly. Though Anney knows about this, she loves Glen too much to leave him. Bone used to sit quietly and did not pay attention to what she is doing. She got the symptoms of; Anxiety disorder: anxiety disorder takes place to Bone, when Glenn literally beats her bloody, gets on top of her, and then rapes her. And even after Anney catches him red-handed, she still chooses him over her child, the very girl who promised she would never hate her own mother. For this reason, Bone felt depersonalization anxiety and depression. She could have diminished the ability to experience pleasure. She started avoidance of activities, places, and persons. She had a fear of being trapped and stranded without help. This situation might lead to a panic attack. Panic attack: this might attack Bone because of overwhelming fear and anxiety. The reason for this was intense and sexual abuse by her stepfather. Glen treats her like trash. Her safety net failed. She seemed her father is both a child batterer and a molester. Bone's mother blames her daughter for the violent attacks by her father. Bone developed and intellectual curiosity. A distinct period of her powerful fear and physical/mental uneasiness might originate the following: Depersonalization. Feelings of pungent. Feelings of going wild or losing control are common. Feelings of dizziness, dizzy, pale, or shaky. Trembling or shaking. Feeling of not being able to breathe. Sensations of tingling or lack of feeling. Social phobia: The character "Bone" might get social phobias with having her birth certificate stamped with the word "illegitimate" and her violent rape. This causes humiliating and embarrassing herself in her social performance. Â   Â  

Adaptive Value Of Homosexual Behavior Sociology Essay

Adaptive Value Of Homosexual Behavior Sociology Essay Studies into the evolution of humans and essentially any organism in the world clearly prove that the concepts and tenets of Evolutionary Theory are much more complicated than the common, simple idea of survival of the fittest. The subject of homosexuality is no different in this distinction; even into modern society, human behavior has been in heated debate to uncover whether it is more a result of heredity or environmental factors. Homosexuality as a biological concept and the definition I will be using refers to same-sex sexual behavior between members of the same gender. Understanding Evolution, and natural selection as an extension of it, will help to clarify and comprehend how homosexuality fits into this framework of ideas. Modern evolutionary theory incorporates both Charles Darwins observation that there is heritable variability in traits and that variants best suited to an environment are more likely to be passes on (natural selection) as well as Gregor Mendels work on how that variation is inherited to further generations. Most importantly natural selection acts on phenotypes which are observable and often measurable expressions of a trait (Stinson, Bogin and ORourke 824). Phenotypes are not purely a result of genes; they also include (most importantly) the influence and interaction with the environment. When individuals have a phenotype that is advantageous in an environment, often this results in an adaptation where their genes are most likely to survive and they are able to reproduce to contribute alleles to the next generation (Stinson, Bogin and ORourke 7). Behaviors, as we are seeing with the increasingly developing field of Sociobiology, are often a result of both biological and social components. As clinical psychologist Frank Muscarella points out when behaviors commonly exhibited by humans can be expected to have contributed to survival and reproduction in the evolutionary past those genes that influence the behavior will spread (Muscarella , Fink and Grammer 394). In regards to homosexuality, and male homosexuality specifically, this behavior fits well into this model because there is increasing evidence that there are both genetic and social aspects that predispose individuals to homosexual behavior. A common misconception about homosexual behavior is that it is both a rare occurrence and it is inherently deleterious because same-sex sexual acts do not result in offspring; yet the commonality of homosexual behavior in itself indicates that there is an evolutionary factor selecting for it. In reality homosexual behavior is and can be seen in countless species in the world. Biologist Bruce Bagemihl in his compilation of studies on animal homosexuality shows that homosexual behavior occurs in more than 450 different kinds of animals worldwide, and is found in every major geographic region and every major animal group (Bagemihl 12). Similarly biodiversity specialist R.C. Kirkpatrick in his research cataloged the geographical distribution of forms of homosexual behavior in a variety of human populations around the world (Kirkpatrick 387). So it is safe to presume that there are other factors that play into the adaptation of homosexual behavior, some may have more of a physical evolutionary basis, while others more related to social evolutionary mechanisms but many theories have become potential explanations of this seemingly paradox of evolution that occurs quite often within and between species. The important distinction is that homosexuality, like many traits, isnt attributed to one model or theory. Multiple theories attempt to help to explain how a behavior attributed to something as seemingly ironic as nonreproductive sex contributes to an adaptive advantage in human evolution. One of the first and oldest hypotheses revolves around the theory of kin selection where selection is made for increasing inclusive fitness by increasing the reproductive fitness of kin (since parents and siblings share fifty percent of their genetic material). Another similar theory revolves around the ideas of reciprocal altruism and an adaptive advantage of homosocial behavior. Lastly, a more recent theory proposes a more physical genetic basis revolving around sexual antagonism, the theory being that the same genes that promote homosocial behavior in males is beneficial to the reproductive potential of relatives. II) Kin selection Theory Kin selection theory operates on the assumption that there is some genetic basis for homosexuality and genes for it are maintained in a population by homosexuals increasing their inclusive fitness by contributing to the reproductive success of relatives, in theory these kin would then have a better chance of reproducing and of carrying foreword genes common to both the homosexual and his kin (McKnight 129). Unfortunately I believe lack of data has led to this hypothesis being prematurely discredited by many researchers. On the other hand inconsistencies and the lack of data as Ive seen is more due to the types on environments the studies are being done in. A study on the role of homosexuality in males using data from London residents found that there were no significant differences between heterosexual and homosexual men in general familial affinity, generous feelings (willingness to provide financial and emotional resources), and benevolent tendencies (Rahman and Hull 462). However modern western and industrial societies are vastly different than the historical environments where much of human evolution has taken place. Taking into account the length of time we can track homosexual behavior has persisted, its most likely that this adaptation is a result of a specific type of environment and cultures that are more representative of ancestral environments will likely give us a better case study. A great case study by evolutionary psychologists Paul Vasey and Doug VanderLaan also tested this theory Samoan Pacific Islanders; within Samoan culture there is a gender category of men called faafafine that tend to be exclusively attracted to other adult men, an excellent parallel to exclusive homosexual behavior (Association for Psychological Science). They found that the faafafine are much more altruistically inclined toward their nieces and nephews than either Samoan women or heterosexual men (Association for Psychological Science). On the surface it doesnt seem like kin selection alone is enough to offset the costs of forgoing direct reproduction, yet more and more data is becoming evident that a combination of biological and social mechanisms may contribute to offset these costs. Again specialist Kirkpatrick helps us understand the forces that may be at work; kin selection operates on three basic assumptions (1) that homosexual behavior reduces individual reproductive success, (2) that lineages with homosexuals have greater reproductive success than lineages without, and (3) that homosexual behavior is typically seen in individuals of low reproductive potential (Kirkpatrick 391). The third observation that this behavior is seen in individuals with low reproductive potential is an important aspect of our next theory. III) Reciprocal Altruism and Homosocial Behavior Altruistic behavior is essentially any behavior of an individual that benefits another unrelated individual at a cost to its own reproductive fitness. As an extension of this, reciprocal altruism assumes that this cost is offset by the likelihood of the return benefit (Trivers 35). Applied with research on homosexual behavior there is strong evidence that this type of behavior is an evolutionary benefit for social relationships and is closely linked with survival. This theory has become known as the Alliance Theory and supposes that same-sex sexual behavior may have reinforced same-sex alliances, which contributed directly to survival and indirectly to reproduction (Muscarella, Cevallos and Siler-Knogl 771). An important and vital aspect of this theory is to recognize that homosexual behavior does not discount the occurrence of heterosexual behavior. In fact as Muscarella points out individuals in many species including humans both heteroerotic and homoerotic behavior have been impor tant social aspects for most of our evolutionary history (Muscarella, The Evolution of Homoerotic Behavior in Humans 53). Same-sex sexual behavior in humans likely contributed to survival by reinforcing social alliances; by forming social ties, overall survival of members would be directly increased as well as lower status individuals increasing their reproductive fitness by gaining access to mates through a higher ranked member. Average reproductive success increases by adapting to include a moderate level of homosexual behavior (Kirkpatrick 389). This type of relationship can be seen in both chimpanzees and gorillas where lower status males that form same-sex alliances with higher status males both increase their survival potential and in many cases increase reproductive potential due to the higher status male allowing reproduction with female members ( (Muscarella, The Evolution of Homoerotic Behavior in Humans 61); (Kirkpatrick 397)). Its likely that genes predisposing behaviors for altruistic behavior, which are a clear adaptive advantage especially in complex social species, are at least to a certain extent the same genes that influence homosexual behavior. IV) Antagonistic Pleiotropy Genetics in particular are a complicated study because in many cases genes have multiple effects, these can be based on stages of life and even have separate effects regarding different sexes of the same species. Regarding antagonistic pleiotropy, being the concept that a beneficial effect to one group can have detrimental effects in another, there are two situations that revolve around the same concept. In the first theory it assumes that there is some reproductive advantage to having homosexual alleles in heterosexual or bisexual men, while at some point this becomes a disadvantage as reproductive potential passes the peak level. Likely this advantage relates to an immediate reproductive advantage by directly enhancing sex drive or some other aspect of sexual performance (McKnight 76). This creates a great environment for case studies and twin studies in particular are excellent to examine whether this is a plausible explanation. In a twin study carried out on a large number of par ticipants heterosexuals with a non-heterosexual twin tended to have more opposite-sex partners than do heterosexual twin pairs indicating that genes responsible for homosexual predispositions likely have a reproductive benefit in heterosexuals (Zietsch, Morley and Shekar 424). Similarly, the next situation proposes that the same genes responsible for homosexual behavior in men are also responsible for higher fecundity in female relatives. Using pedigree demographics comparing both the maternal and paternal line of 98 homosexual and 100 heterosexual men and their relatives, evolutionary psychologist Andrea Camperio-Ciani found that female maternal relatives of homosexuals have higher fecundity than female maternal relatives of heterosexuals and that this difference is not found in female paternal relatives (Ciani, Francesca and Capiluppi, Evidence for Maternally Inherited Factors Favouring Male Homosexuality and Promoting Female Fecundity 2217). This along with a second study that fo und this trend in even first time mothers supports the theory of homosexuality as antagonistic selection where the same genes selected for higher fecundity in females promote homosexual behavior in males (Iemmola and Camperio-Ciani 393). V) Conclusions Its obvious that the evolution of male homosexuality as an adaptation has many facets, understandably its just as complicated as any human social behavior, but we are gaining ground on understanding the genetic and social implications of behavior and how evolution has shaped these in humans. Overall however its becoming more a more evident that the survival of a human predisposition for homosexuality can be explained by sexual orientation being a trait that is influenced by a number of pleitropic genes (Miller 45). For this reason a singular theory is highly unlikely to be sufficient to explain something as complex as homosexuality; multiple theories then likely contribute to the overall model. A gene for altruism, and as an extension homosexuality, likely plays a very important role in Kin selection theory; and it is also probable that sexual antagonism helps offset the cost of non reproductive behavior. No one theory will be sufficient, but with the combined perspectives and resear ch of genetics, sociobiology, psychology and other disciplines the adaptive benefit of this behavior will become more understandable.

Symbols and Symbolism in The Yellow Wallpaper and A Rose for Emily

Symbolism in The Yellow Wallpaper and A Rose for Emily      Ã‚   William Faulkner's "A Rose for Emily" and Charlotte Perkins Gilman's "The Yellow Wallpaper" hold numerous similarities. Both stories show the influences of society and the slow decay on a particular woman. The title of each piece becomes important to the plot and ultimate outcome. In several ways, each title takes shape to portray symbolism in one sense or another. The references to color identify contradictory messages to those who have not heard of these stories, while the title itself takes physical form and is "living" at some point in the piece.      Ã‚  Ã‚  Ã‚   When first assigned to read "The Yellow Wallpaper," a student may think of a bright, cheerful paper covered room. Little does he realize that, instead of a stereotypical yellow, the wallpaper's "color is...almost revolting; a smouldering unclean yellow" (Gilman15). It reminds the narrator of "all the yellow things [she] ever saw--not beautiful ones... but old foul, bad yellow things" (23). According to Carol Westcamp, "the author designed the wallpaper...to be yellow for a reason" ("Smouldering"). Even though "yellow is often viewed as a cheerful, joyful color...[it] can also cause unpleasant, exciting, and hostile moods due its symbolism" (Westcamp). The wallpaper takes on a distinctive odor that " 'creeps all over the house,' drenching every room in its subtle aroma of decay" (Gilbert 35). The only thing the narrator "can think of that [the smell] is like is the color of the paper! A yellow smell" (Kivo 23). The narrator feels herself being drawn closer to the brin k of insanity by the maddening color and begs her husband to do something about the paper, but he simply laughs at her.      Ã‚  Ã‚  Ã‚   As the... ...apy. New York: University Books, 1961.    Dillon, George L. "Styles of Reading." Polk 47-62.    Gilbert, Sandra M. and Susan Gumar. "The Madwoman in the Attic: The Woman Writer and the Nineteenth Century Literary Imagination." New Haven: Yale UP, 1979. Kivo 44-46.    Kivo, Carol, ed. The Harcourt Brace Casebook Series in Literature: "The Yellow Wallpaper." Fort Worth: Harcourt, 1997.    Polk, Noel, ed. William Faulkner's "A Rose for Emily." The Harcourt Casebook Series in Literature. Fort Worth: Harcourt, 2000.    Scherting, Jack. "Emily Grierson's Oedipus Complex: Motif, Motive, and Meaning in Faulkner's 'A Rose for Emily.'" Polk, 110-119.    Westcamp, Carol. "A Smouldering Unclean Yellow: An Analysis of 'The Yellow Wallpaper.'" Online. Ixquick. 4 Mar. 2002.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   <http://arapaho.nsuok.edu/~english/westcamp.html>

Critically evaluate Samuel Huntington’s claims in “The Clash of Civilizations?” Essay

The abrupt end of the Cold War meant that the bipolar model of thinking which had dominated the sphere of World Politics for decades became obsolete. This new phase led to a renewal in thinking in the study of International Relations dubbed â€Å"the hundred schools of thought† which led to a wide spectrum of visions about the uncertain future of world affairs. One of the more prominent visions was the late Professor Samuel Huntington’s â€Å"Clash of Civilizations? † published in a 1993 Foreign Affairs article, where he predicted a growing pattern of conflict based on differences in cultural, religious and historical identity of entities he labelled civilizations instead of the ideological differences of the Cold War Era. Huntington’s thesis was a Realist response to Fukuyama’s 1992 book, The End of History and the Last Man. Fukuyama argued that the post-1991 world was left with no viable ideological alternative to liberal democracy and the free market economy predicting a new era of global consensus on democracy, justice, human rights and cooperation. ‘The nation will continue to be a central pole of identification, even if more and more nations come to share common economic and political forms of organization. ‘i Huntington’s premise was that ‘The great divisions among humankind and the dominating source of conflict will be cultural. Nation states will remain as the most powerful actors in world affairs but the principal conflicts of global politics will occur between nations and groups of different civilizations. ‘ii The controversial nature of Huntington’s thesis ensured the stern critique by some of his fellow academics for reasons including oversimplification, neglecting contradicting factors and inaccurate predictions. The tragedy of 9/11 and the events that followed revived the confidence in his thesis by his supporters who saw this as the conformation of Huntington’s predictions notably the inconsolable clash between Islam and the West. Huntington begins by describing the historical evolution of the nature of conflicts in the Western World; from the competition between monarchs and emperors for territorial and mercantile expansion leading to the emergence of nation states beginning with the French Revolution, to the rise of ideological conflict after the Bolshevik Revolutioniii. His Eurocentric bias is clear early as he quotes and perpetuates an idea put forward before by William Lind that these were primarily ‘Western Civil Wars’. Labelling World War II, the deadliest military conflict in history which involved the majority of the world’s nations, as such greatly diminishes the involvement and sacrifices made by people across the world. Notably the Soviet Union which was mainly composed of nations Huntington would regard as part of a Slavic-Orthodox civilization sustained the highest amount of casualties totalling at around twenty-seven millioniv. Later in the paragraph, Huntington writes ‘peoples and governments of non-Western civilizations no longer remain the objects of history as targets of Western colonialism but join the West as movers of history’ as if to suggest that events occurring in non-western parts of the world somehow do not constitute as history if they don’t involve or have a felt effect upon Western society. Although the leadership of the West in fields such as science, technology and engineering for the larger part in recent centuries is indisputable; Jewish philosophy, Hindu mathematics, Muslim astronomy and engineering contributed significantly to the foundations of what we know today and this shouldn’t be undermined. The sharing and borrowing of ideas between the different corners of the world through the millennia’s that’s still going on today suggests a long-term cooperation instead of a clash of civilizations in our common pursuit of knowledge. According to Huntington a civilization is ‘ the highest cultural grouping of people and the broadest level of cultural identity’v. He divides the world’s population into seven civilizations as well as hinting at the possibility of a Caribbean and an African civilization; Africa being indeed a continent known for its vast diversity of cultures and traditionsvi. He defines a civilization by what he calls objective elements such as language, history and primarily religion as well as by the subjective self-identification of people. Huntington argues the onset of globalization has led to increased levels of interaction between peoples of different civilizations, which in turn intensifies civilization consciousness and brings to the forefront their cultural differences which unlike ideological and political differences are fundamental and much less mutable and hence less easily compromised. It’s clear that people instinctively identify themselves closely to others who share common traditions, customs and history; I hold the belief however that Huntington downplays the penetration of globalization and focuses on one aspect of its possible consequences. It’s not the differences that drive cultural conflict between peoples; it’s the lack of understanding which in turn creates prejudices and fears. The increased interactions between peoples have led to a wider acceptance of and fascination with other cultures, helping us understand why foreign societies live the way they do. Huntington argues: ‘†¦Russians cannot become Estonians and Azeri’s cannot become Armenian’vii. An Estonian living in Russia will absorb aspects of Russian culture depending on one’s willingness, length of stay and the extent to which one feels alienated or accepted by Russian society. Thus the objective elements invoked are not convincingly definitive in determining one’s identity; an Englishman may choose to convert to Islam while a Chinese citizen in Shanghai may choose to learn French as a pastime. Globalization in itself has penetrated the long-standing limitations in global trade of the past; politicians ever increasingly have to consider the global implications of domestic policy. More than ever national states around the world are dependent upon each other; the United States Demands Chinese goods while China needs the US to buy its goods. Huntington ascribes ideas such as constitutionalism, human rights, the rule of law, free markets and democracy as Western; unable to gain a foothold in other civilizations. He writes: ‘Modern democratic government originated in the West. When it has developed in non-western societies it has usually been the product of the western colonialism or imposition’viii. suggesting that somehow peoples of other civilizations may not be able to sustain or see the benefits of a form of democratic governance. The people of India would point out that democratic government was formed in their country despite, not because of the Westix. Today more than two-thirds of the world’s governments operate in some form of democracy, which reaffirms the idea that democracy is a universal value, contradicting Huntington’s view of its general Western exclusivity. If asked, most Middle-Easterners would prefer the idea of a democratic to authoritarian governancex; the limitation of democratic development in the region however is a product of the unstable and incompatible political landscape rather than the irreconcilability of the culture. Defining the religious aspects of the Western Civilization, Huntington justifies the grouping of Protestant and Catholic Christians into a single entity by emphasizing shared experiences in European history such as the Renaissance, the Enlightenment and the Industrial Revolution which in turn separates them from the Orthodox Christians beyond Central Europexi. Although it is evident that the closer proximity of those events has influenced Protestants and Catholics more than their Orthodox counterparts, the closer resemblance of Catholic and Orthodox practices and beliefs as opposed to Protestants is however neglected. Huntington consistently appeals to religion as the primary source of cultural identity, rightly so, to a Christian the creeds of their religion have a profound influence on their world view and thus how they would identify themselves. When speaking of the Islamic civilization however, Huntington doesn’t seem to make the effort to differentiate between the major denominations of Shia, Sunni and Sufism which have so strongly influenced the historical and especially current political landscape of the Middle-East. In a passionate attempt to warn his fellow Americans of the potential threats that their country may face in the post-Cold War environment, Huntington essentially perpetuated ideas that were dangerous and self-fulfilling. The existence of a Confucian-Islamic connection that may threaten the West described by Huntingtonxii is yet to be empirically verified, as the Chinese and US economies remain inter-linked and Barrack Obama moves towards a policy of dialogue in the Middle-East. Given the history of US foreign policy, legislators would have found Huntington’s paradigm easy to understand and convenient in terms of implementation. A worldview of distrust towards foreign powers that demands the maintaining of military superiority in the name of security panders to the powerful military industrial complex in the US. In order to maintain peace, global stability and have any hopes of dealing with transnational issues such as global warming, policy makers should regard all nations as members of the world community and work closer with international organizations such as the UN and WTO in establishing universal laws. The alienation and coercion of other governments will indeed create an atmosphere of antagonism and hostility.

Preparation and Reactivity of Sn1 2-Bromobutane

Preparation and SN1 Reactivity of 2-Bromobutane Paul DeJong Department of Chemistry, Illinois State University, Normal, IL 61790-4160 Submitted: April 4, 2013 Introduction The purpose of part 1 of the lab is to prepare 2-Bromobutane using SN1 reactions. The purpose of part 2 of the lab is to determine the relative reactivity of alkyl halides under SN1 conditions. Results and Discussion The Overall Reaction The Proposed Mechanism Experimental Procedure To prepare 2-bromobutane in part one of the lab, you have to set up a flask apparatus with a thermowell and a Claisen adapter.Attached to the Claisen adapter is a thermometer measuring the temperature in the flask and a vertical condenser for reflux. Add in the reactants to the flask, sulfuric acid, 2-butanol, and ammonium bromide. Heat to 95OC and then maintain temperature for 30 minutes. Then, water was added and simple distillation began. The aqueous layer of the distillate was removed leaving the product, 2-bromobutane. For part 2, two drops of each of the following were placed in 3 different test tubes: 2-bromobutane, 1-bromoutane and 2-bromo-2-methylpropane.In each of the tubes an even amount of silver nitrate is added. Observations of the reactions precipitate are recorded. Same process is done with 2-chlorobutane, 2-iodobutane, and 2-bromobutane. Experimental Stoichiometry Compound| Molecularweight| Quantity| Moles| 2-butanol| 74. 12 g| 7. 4 mL (6. 0 g)| 0. 081| Sulfuric acid| 98. 08 g| 20 mL (12M)| 0. 24| Ammonium bromide| 97. 94 g| 8. 0 g| 0. 082| The limiting reactant is 2-butanol. Yield Data 2-bromobutane| | Molecular Weight| 137. 02 g|Theoretical Yield (moles)| 0. 081 mol| Theoretical Yield (grams)| 11. 10 g| Actual Yield| 10. 11 g| NMR Table Signal| Chemical Shift| Multiplicity| Integration| A| 4. 11| Multiplet| 1H| B| 1. 85| Pentet| 2H| C| 1. 60| Doublet| 3H| D| 1. 08| Triplet| 3H| Reactivity of Alkyl Halides Compound| Observations at Room Temp| Observations upon Heating| 1-bromobutane| Clear| Very little change but some white ppt| 2-bromobutane| Clear| Moderately cloudy white ppt| 2-bromo-2-methylpropane| Brown tint| Very milky white ppt|Compound| Observations at Room temp| Observations upon heating| 2-chlorobutane| Clear| No ppt at all| 2-bromobutane| Clear| Moderately white and some yellow ppt| 2-iodobutane| Dark brown| Thick, milky white and yellow ppt| Conclusion Overall, the first part of the lab produced 2-bromobutane using SN1 reactions. This product was then used in the second part of the experiment to determine the relative reactivities of alkyl halides. Reactivity increases as follows 1O < 2O < 3O and Cl- < Br- < I –