Effect of Alcohol on Reaction Times: Experiment

Effect of Alcohol on Reaction Times: Experiment The experiment tested whether alcohol had any effect on reaction time. Abstract Objective: The experiment tested whether alcohol had any effect on reaction time. Method: Subjects were required to identify the threshold at which a flickering light became constant (critical flicker fusion threshold) using a computerised flicker fusion system.   Frequency increased at a rate of 4 hertz per second.   Critical flicker fusion threshold is a well accepted and documented non-invasive measure of reaction time.   Ten female subjects were tested under control conditions and following ingestion of 2 units (80 mg) alcohol.   It was hypothesised that alcohol would cause an increase in reaction time, which would translate to a delay in recognising the critical flicker fusion threshold, thus higher frequency results. Results:   Ingestion of 2 units (80mg) of alcohol was associated with an increase in mean critical flicker fusion threshold from 14.6 hertz to 15.4 hertz (p Conclusion:   2 units of alcohol had the effect of increasing reaction time by an average of 0.2 seconds, which has serious implications for the consumption of alcohol prior to tasks involving complex motor skills such as driving. Introduction Alcohol and its effects Alcohol is believed to be the oldest drug used by humans, predating even the use of opium by 2000 years to around 8000 BC (Kerr, Hindmarch 1998).   Whilst legal age limits exist for the purchase of alcohol in the United Kingdom, it is widely regarded within the Western world as an acceptable drug. In recent household studies in the UK it was found that 75% of men and 60% of women consumed at least one alcoholic drink per week.   In addition, 40% of men and 23% of women were found to have exceeded the national recommendations on alcohol consumption within the previous week (Office for National Statistics 2005).   The Institute For Alcohol Studies ranks the United Kingdom as 9th in per capita consumption of pure alcohol within European Nations, with 9.6 litres of pure alcohol being consumed per capita in 2002 (Institute for Alcohol Studies 2005). Alcohol is known for its psychoactive effects, which include alterations in vision, motor tasks and skills such as car driving and flying.   In addition it is repeatedly shown, whether anecdotally or via scientific measurements, that a strong correlation exists between alcohol consumption and violence. Alcohol is known to be a contributory factor in road accidents, with 9% of casualties showing evidence of alcohol consumption, this figure rising to 31% when considering pedestrians (The Scottish Office Central Research Unit 1998).   Research carried out in the 1980s by the Transport Research Laboratory indicated that alcohol was involved in 35% of fatal road traffic accidents, with the figure falling slightly to 31.5% in a similar study completed in 2000 (Tunbridge, Keigan James 2001).  Ã‚   However neither of these reports explained why the association existed between alcohol and road traffic accidents, whether resulting in death or not.   Of import for this report is the association between alcohol and reaction time.   The majority of alcohol consumers can identify a slowing down of their faculties following alcohol consumption, regardless of claims to the contrary.  Ã‚   Research has shown that alcohol impairs the ability of individuals to carry out complex motor tasks. One example involved bus drivers being asked to drive a vehicle through a narrow space, or highlighting the fact that the gap was too narrow if necessary.   It was shown that alcohol consumption was correlated with a reduced ability to accurately guide the bus through the gap, coupled with an inability to accurately gauge the width of the gap.   Hence bus drivers who had consumed alcohol were more likely to judge a gap as to be wide enough when it was not, than those who had not consumed alcohol and whose spatial awareness remained intact (Rang, Dale Ritter 1999a). Recommended stopping distances at 30 miles per hour are 23 metres / 75 feet, of which 9 metres / 30 feet are the ‘thinking distance’.   This is based on an average reaction time of 0.7 seconds when the car is travelling at 44 feet / second.   Therefore if reaction times increase, stopping distances will do so also, with serious implications in an accident. It has been indicated by some research that low levels of alcohol consumption have very little effect on reaction time if attention could be focussed on a single objective (Jaaskelainen et al. 1996).   Where attention needs to be divided between task objectives, even low blood alcohol levels were found to impair performance.   This suggests that alcohol is not going to greatly impair reaction time during simple tasks, but complex tasks which require several aspects to the performance would be much more likely to be impaired.   This was further supported by the research of Bartholow et al which found that response times per se were relatively unaffected by the presence of alcohol but the ability to respond appropriately to tasks that required complex attention were (Bartholow et al. 2003).   Indeed the authors implicate alcohol in impairments of cognitive processing, rather than the motor responses that result from these processes.   They cite data from studies that have sho wn that alcohol acts to reduce the ability to respond to stimuli as well as interpret and process the correct relevance of these stimuli.   This inability to respond fully to cues from the environment is described as the attention-allocation model, as the brain is selective in which cues are actually attended to and processing within the brain.   Further research has indicated that alcohol can sometimes actually improve the ability of subjects to resist distraction from a task (Erblich, Earleywine 1995) but this is not in keeping with the majority of research. Given the existing data this experiment was designed to assess the ability of female subjects to respond to a change in a single form of stimulus.   There was no distraction, nor a divided attention focus required, in an effort to ensure that the effects of alcohol on reaction time, if any, were more obvious. Flicker fusion threshold The human eye is capable of distinguishing between intermittent stimuli such as flickering light, up to a threshold, which is usually around 16 Hertz.   The frequency at which the human eye is no longer able to distinguish individual stimuli is defined as the critical flicker fusion threshold.   It is at this frequency that the individual stimuli have fused to form a single continuous stimulus.   The flicker fusion threshold will vary between individuals depending on their eyesight, hence the use of a number os study participants.   It will also vary between an individual’s readings depending on their reaction time at each stage – ie the time at which they actually consciously register that the hitherto flickering stimulus has now become constant and are able to respond to this knowledge.   The purpose of this experiment was to use the measurement of critical flicker fusion threshold as a correlate to reaction time.   For this experiment the experimental hypothesis was that alcohol acts to increase the reaction time of female subjects. The null hypothesis was that alcohol has no effect on the reaction time of female subjects.   Thus it would be expected that an individual with a slower reaction time would give results indicating a higher critical flicker fusion threshold, measured in hertz.   In other words it would be expected that the frequency at which subjects indicated that the flickering light (for full details of methodology please see below) had fused into a single light would be higher under alcohol conditions than control.   This would not be due to an enhanced ability to differentiate between flickering and constant light, rather a delay in the ability for this change to register and be processed by the brain, and the subject to press the button. Method Ten female subjects aged from 18-35 years, with a body mass index of 19-28 were selected as part of an open experiment into the effect of alcohol on reaction time.   All subjects were informed of the purpose of the experiment prior to taking part and were required to complete medical questionnaires to exclude medication that might affect the results of the experiment.  Ã‚   Known negative effects of alcohol consumption were also excluded and subjects all had a history of regular alcohol consumption of at least 2 units, once per week. Subjects were required to refrain from eating or drinking for the 2 hours prior to each test, which took place on consecutive days, with the control (no alcohol) test taking place prior to the alcohol test.   The 2 hour nil by mouth regulation was put in place in an effort to standardise the absorption of the alcohol by reducing stomach contents to a more uniform amount, thus providing a similar surface area available for alcohol absorption in each study participant. On arriving at the test room subjects were required to complete a health and safety questionnaire and were again reminded of the aims and purposes of the experiment.   Subjects were free to leave at any time, and signed consent forms to allow their results to be used.   Following the initial briefing subjects were given a training briefing on the specialised equipment and allowed to take a small number of practise tests to familiarise themselves with the equipment requirements.   Following this training period a five-minute break was allowed. For the test itself each subject was required to drink 250ml of pure orange juice, with a five-minute timespan being allowed for the drink to be consumed.   Forty minutes after the drink had been consumed subjects critical flicker fusion threshold was tested using the Model 12021 Flicker Fusion System (Lafayette Instruments). This time scale was used as the 2 units of alcohol would have reached a peak blood alcohol concentration of approximately 80 mg/100 ml 45 minutes following ingestion (Wilson, Benjamin Sreenivasan 2003).   Assuming absorption and metabolism at the accepted 4 mmol/l per hour (Rang, Dale Ritter 1999b), the alcohol would be expected to have been removed completely from the body within 6 hours (Wilson, Benjamin Sreenivasan 2003). Subjects were requested to look in to the binocular eye piece at two white simultaneous lights.   The use of a separate light for each eye was used to prevent differences in eye focussing from causing conflicting critical flicker fusion thresholds. The initial flash frequency of 4 hertz was set to ascending at a rate of 4 hertz / second.   The subject was provided with a push button connected to a 1 metre cable and was required to push the button when the flickering ceased and the lights became fused to a single light emission.   The point at which the button was pressed was taken as the critical flicker fusion threshold.  Ã‚   Each subject was required to undertake ten reaction time recordings. The experimental procedures on day 2 were identical to day 1, except that 2 units of alcohol (vodka), approximately 80mg of pure alcohol, had been added to the 250ml of pure orange juice that the subjects were required to drink.   A further ten reaction time recordings were made using the flicker fusion system. Results Each subject was able to provide 10 reaction time recordings, which ranged from a minimum of 11.5 Hertz (subject 9, recording 6, no alcohol) to a maximum of 19.4 Hertz (subject 3, recording 8, with alcohol).   The mean for the control / no alcohol test was 14.6 + 3.6 Hertz.   The mean for the alcohol test was 15.4 + 4.0 Hertz. Tables 1 and 2 below show the individual reaction times of each subject participant on the two tests. Table 1. Reaction times of 5 female subjects with and without alcohol, as measured by critical flicker fusion threshold Subject 1 Subject 2 Subject 3 Subject 4 Subject 5 Reaction test number None Alcohol None Alcohol None Alcohol None Alcohol None Alcohol 1 15.0 17.2 14.3 16.9 18.2 18.1 13.4 17.5 12.5 13.1 2 14.1 13.6 15.5 17.2 17.9 19.3 14.4 14.9 12.9 12.5 3 16.2 16.2 15.8 16.7 16.5 18.5 14.8 14.5 12.3 12.8 4 13.6 16.1 16.3 17.9 17.7 17.9 14.3 14.8 12.8 12.6 5 12.5 14.3 14.9 15.5 16.9 18.9 14.9 13.5 12.4 12.4 6 13.8 15.5 15.7 16.1 17.4 18.3 14.1 14.6 12.6 12.9 7 12.0 14.8 15.4 18.5 16.0 17.6 15.1 14.9 13.1 13.5 8 11.8 12.9 14.8 17.1 17.3 19.4 15.3 15.1 13.9 13.2 9 12.9 12.7 15.7 16.7 18.0 17.9 13.3 13.5 12.8 12.6 10 13.0 15.8 15.0 17.8 16.7 18.9 16.7 14.7 14.1 11.9 Mean 13.5 14.9 15.3 17.0 17.3 18.5 14.6 14.8 12.9 12.8 Median 13.3 15.2 15.5 17.0 17.4 18.4 14.6 14.8 12.8 12.7 Table 2. Reaction times of 5 female subjects with and without alcohol, as measured by critical flicker fusion threshold Subject 6 Subject 7 Subject 8 Subject 9 Subject 10 Reaction test number None Alcohol None Alcohol None Alcohol None Alcohol None Alcohol 1 13.9 15.1 16.5 15.6 12.8 14.5 13.6 15.5 16.5 15.4 2 16.5 15.9 14.3 15.1 12.6 13.5 14.9 14.2 15.9 18.1 3 14.2 14.6 12.9 14.0 12.4 12.4 15.0 14.8 15.7 14.6 4 14.9 15.5 13.9 16.8 12.0 12.6 15.8 14.8 15.2 16.8 5 14.1 15.6 13.5 16.7 13.1 13.8 14.7 13.9 16.4 16.5 6 16.5 15.8 13.4 18.1 13.5 14.2 11.5 16.7 16.2 16.4 7 13.2 13.3 13.9 15.1 12.3 14.2 15.4 14.6 16.8 15.8 8 14.5 15.6 14.2 15.8 12.9 14.6 15.3 16.1 17.1 16.2 9

Kent state Nutrition programme

Honors equivalents shall satisfy the Kent Core. None of the courses on the Kent Core list may be taken with a pass/fail grade. Visit www. Kent. Deed/catalog/Kent-core for course list. Diversity Course Requirement Students must complete a two-course diversity requirement, consisting of one with a domestic (U. S. ) focus and one with a global focus. One course must come from the Kent Core.The second course may be taken as a second Kent Core, within a major or minor, or as a general elective; or, with dean's approval, by completing one semester of study in another country. Visit www. Kent. Deed/catalog/diversity for course list. Writing-Intensive Course Requirement Students must complete a one-course writing-intensive requirement in their major and earn minimum C (2. 00) grade. Visit www. Kent. Deed/catalog/wick for course list.Experiential Learning Requirement To provide students with direct engagement in learning experiences that promote academic relevance, meaning and an understandin g of real-world issues, students must complete this requirement at Kent State, either as a for-credit course or as a non-credit, non-course experience approved by the appropriate faculty member. Visit www. Kent. Deed/catalog/leer for course list. Upper-Division Requirement Students must complete a minimum 39 upper-division (numbered 30000 to 49999) credit hours of coursework. Programs in the College of Arts and Sciences require a minimum of 42 hours of upper-division coursework.

What Experts Are Saying About Holocaust Essay Topics and What It Means For You

What Experts Are Saying About Holocaust Essay Topics and What It Means For You It's this outrage we want to stay alive in our day-to-day life and apply it to all scenarios, whether they involve Jews or non-Jews. The folks of Israel massacred again. Studying the Holocaust is among the most crucial issues that's included into the educational programs not just in the United Stated but also in different countries of the planet. It was just a dim symptom of what the future held for European Jews. Fatalities occurred only as soon as the brain stem and the rear of the head were also chilled. All the indicators of this disease give an explanation of insane killings. The report on the outcomes of our research must be turned into there, to assure that they be utilized in time for those troops. Be careful of oversimplifications. This will guarantee you start out on the perfect path in your research. Debt bondage is another sort of slavery that's still practiced around the world. S uch events are of a high magnitude because they have a long-lasting impact worldwide and have the capability to change the world forever. These are events of such magnitude they have a durable effect on the world and have the ability to change the worlds for ever. Holocaust Essay Topics - the Conspiracy Actually, since the war progressed, the amount of prisoners increased. Concentration camps in Germany served several purposes. Auschwitz was a huge camp and well-known for its brutality. It included camp sites a few miles away from the main complex. Holocaust Essay Topics for Dummies As you prepare to compose an essay on the Holocaust, there are a few things that you must keep in mind. Anti-Semitism is directly joined to the holocaust and that up to this day the Jews are fearful of a repeat of the exact same to the extent that they've put in place measures to safeguard themselves in the event of any eventuality. As stated originally, there's a huge amount of information th at can be found on the Holocaust. Within this paragraph, I'll explain unique causes of the Holocaust. This tragedy shouldn't be forgotten. As responsible and mindful human beings there are methods to stop horrible events like the holocaust or any genocide to occur. It was a horrific event in our history and it is one that will never be forgotten, especially given the fact that the impact of the event can still be felt worldwide. Slavery and the holocaust each had a most important purpose, although they might have been different. The Fundamentals of Holocaust Essay Topics Revealed To start with, it's very essential to locate the reliable recourses, where the info is accurate and truthful. Train yourself to get the greatest outcomes. A very simple search of the internet gives many documented human experiments like those on Native Americans. Utilizing the Dissecting the Prompt strategy, students may take apart and analyze the prompt, identifying the historical topics they should learn more about in the remaining part of the unit to be in a position to completely answer the questi on. Writing an essay on the Holocaust isn't an effortless endeavor. Naturally, you must begin writing. An interesting Holocaust topic is the secret to a paper which will help students become involved with learning. To get going on a Holocaust essay, students should consider some of these topic ideas. Ok, I Think I Understand Holocaust Essay Topics, Now Tell Me About Holocaust Essay Topics! A lot of historical data can be investigated so as to study the Holocaust. You will see that not only is there a great deal of information on the Holocaust but also that there are numerous approaches you may take to the subject. There are a lot of examples, thoughts and stories online that may be used for research. You may want to write on a subject that is intriguing and educational for your reader. Several of these individuals died as a consequence of incarceration and maltreatment. As a consequence, he's virtually impervious to all types of physical injury. An individual must rec kon on instances of death. Bear in mind that you're managing a weighty subject and ought to plan to devote a vast majority of your time on this paper. New Ideas Into Holocaust Essay Topics Never Before Revealed The word is still utilized in its other senses. It's one instance of bad things happening to good individuals. How miserable is the soul of an individual that hurts other folks. 1 way lay death for each of them. Top Choices of Holocaust Essay Topics Explain why propaganda proved to be a crucial portion of the Nazi state. There's a very long list of genocides committed through the ages in several elements of the planet. Try everything you can to think well on this subject and should you will need help, you're always welcome. Sadly, there's no definitive solution to that question. The Most Popular Holocaust Essay Topics That said, exploring certain facets of the Holocaust remains an important academic contribution for a lot of reasons. Dehumanization played a hug e part in the genocide also. To conclude, the holocaust is among the memorable events in the history of man and it's important to know some of its causes and the way it was carried out. The development of the Holocaust. The Meaning of Holocaust Essay Topics This is particularly true if you're in high school or college. Ask students to attempt to support their thinking with an example from the history they've studied or their very own lives. Six million of people who died were killed just because they were Jewish. This year became an extremely busy year for those students.

Definition and Examples of Sententiae in Rhetoric

In classical rhetoric, a  sententia  is a maxim, proverb, aphorism, or popular quotation: a brief expression of conventional wisdom. Plural: sententiae. A  sententia, said the Dutch  Renaissance humanist  Erasmus, is an adage  that bears particularly on â€Å"instruction in living (Adagia, 1536). See Examples and Observations below. Also see: 2,000 Pure Fools: An Anthology of AphorismsCommonplaceEnthymemeLogosWhat Is a Maxim? EtymologyFrom the Latin, feeling, judgment, opinion Examples and Observations It is best to insert sententiae discreetly, that we may be viewed as judicial advocates, not moral instructors.(Rhetorica ad Herennium, c. 90 BC)A mans as miserable as he thinks he is.(Seneca the Younger)No man is laughable who laughs at himself.(Seneca the Younger)Things forbidden have a secret charm.(Tacitus)Greater things are believed of those who are absent.(Tacitus)A bad peace is worse than war.(Tacitus)Post-Ciceronian Latin gave vigor and point to style by the frequent use of sententiae--clever, sometimes epigrammatic, apothegmatic turns of phrase: what oft was thought but ner so well expressd, as Alexander Pope was to put it. Quintilian devotes a chapter to sententiae (8.5), acknowledging that they had become a necessary part of the orators art.(George A. Kennedy, Classical Rhetoric. Encyclopedia of Rhetoric. Oxford University  Press, 2001)Sententiae in the Renaissance- A sententia, which had overtones of its classical Latin sense of judgement, was a pithy and memorable phra se: a recitall of some grave matter which both beautified and graced a style. Several writers were clear that testimony could take the form of a Notable sentence or was a sententia of a witness. Richard Sherry, in his Treatise of Schemes and Tropes (1550), closely associated the sententia with the argument from testimony or authority when he defined it as one of the seven kinds of figure called Indicacio, or authoritie.(R.W. Serjeantson, Testimony. Renaissance Figures of Speech, ed. by Sylvia Adamson, Gavin Alexander, and Katrin Ettenhuber. Cambridge University  Press, 2008)- Scholasticism developed around the medieval tendency to treat ancient sources--both the Bible and certain texts of classical antiquity--as authoritative. So strong was this tendency that individual sentences from a respected source, even when taken out of context, could be employed to secure a point in debate. These isolated statements from ancient sources were called sententiae. Some authors collected large numbers of sententiae into anthologies for educational and disputational purposes. Disputes centered on debatable points suggested by one or more sententiae, these debatable notions being called quaestiones. Education by debating general topics drawn from authoritative statements reveals one way in which rhetorical and dialectical practices made their way into the Middle Ages. . . .Writers now known as the Italian Humanists were responsible for a resurgence of interest in the languages and texts of classical antiquity during the Renaissance period, an orientation referred to as classicism. . . .[T]he Humanists sought to place the text in its historical context, in order to establish the correct value of words and phrases. . . . As noted [above], the scholastic practice of splintering classical sources into individual statements or sententiae led to the loss of original meaning and even of authorial identity. Charles Nauert writes, from Petrarch onward, humanists insisted on reading each opinion in its context, abandoning the anthologies . . . and subsequent interpretations and going back to the full original text in search of the authors real meaning.(James A. Herrick, The History and Theory of Rhetoric, 3rd ed. Pearson, 2005) Pronunciation: sen-TEN-she-ah

Walter Whitman Essay - 2069 Words

All Alone nbsp;nbsp;nbsp;nbsp;nbsp;Walter Whitman was an American poet of the 1800’s. Walt was arguably one of America’s influential and innovative poets of his time. Whitman began work as a printer and journalist in the New York City area. He wrote articles on politics, civics, and the arts. During the Civil War, Whitman was a volunteer assistant in the military hospitals in Washington, D.C. After the war, he worked in several government departments until he suffered a stroke in 1873. He spent the rest of his life in Camden, N.J., where he continues to write poems and articles. Leaves of Grass, a book of poems Whitman began in 1848 was so unusual at the time that no publisher would publish it. In 1855, he published it†¦show more content†¦It is difficult to challenge the purity and spirituality of the feelings Whitman and Doyle had for each other. Many cant figure out what was between them. â€Å"There can be no doubt that these feelings transcend those usual to friends or companions of the same sex† (Allen 25). Whitman was a homosexual and many of his poems relate to manly love. â€Å"To the serious reader of Calamus, the ‘manly love’ that recurs both as a term and as an idea is of such genuine poetic complexity as to render it a good deal more than ‘abnormal’ and considerably less than ‘deficient’†(Canby 124). The poems also show the friendship of men and women through his life.nbsp;nbsp;nbsp;nbsp;nbsp; nbsp;nbsp;nbsp;nbsp;nbsp;Calamus is a section that has changed along with the revisions of the book. The poems came and gone with how Walt felt each poem held up in each section. â€Å" No section in Leaves of Grass has received so much close attention and been the center of so much discussion and controversy as Calamus† (Bliss 288). Whitman’s own saintlike, spiritual life shows as proof that the poems could not be unwholesome. â€Å"William Sloane Kennedy calls Calamus, â€Å"Whitman’s beautiful democratic poems of friendship† (Bliss 288). The purity, innocence, and spirituality of the Calamus concept cannot be missed. The idea in not original with Whitman. As he states, â€Å" the Calamus idea was expressed by all mankind’s saviors and has frequently beenShow MoreRelatedWalter Whitman1003 Words   |  5 PagesWalter Whitman â€Å"I believe a leaf of grass is no less than the journey-work of the stars† (Whitman 41). Walter Whitman, also known as Walt Whitman, was born on May 31, 1819, in Long Island, New York, to Walter Whitman and Louisa Van Velsor Whitman. When he was twelve, Walt and his family settled in Brooklyn, up to then his family had lived in a dozen different places (Conarroe 4). Walt worked in many different positions; to some he was even viewed as a drifter. Walt was many different things;Read MoreWalter Whitman Research Paper Outline Draft538 Words   |  3 PagesThesis: People who read about Walter Whitman tend to say that he had a good life until his mother pass and his book Leaves of Grass in a book about his life and what he went through. Introduction: Walt Whitman was an American poet from West Hills, Long Island New York. He wrote plenty of poems for the New York Times Journal newspaper also known for the famous book Leaves of Grass that had nine editions and is more than one book. The book Leaves of Grass was published in 1888 when he was finallyRead MoreLeaves Of Grass By Walt Whitman915 Words   |  4 PagesLeaves on Grass is collection of poems written by an American poet named Walt Whitman. The first edition was published in 1855 but, Whitman spent most of his professional life writing and rewriting Leaves of Grass, until his death in 1892 at the age of 72. Even though during the time his work was considered immoral later people began to realize the beauty behind his poems and started to appreciate the man who wrote them.Whitman s Leaves of Grass is iconic in American poetry because of the beautyRead MoreDemocratic Individualism in Walt Whitman Poetry1663 Words   |  7 PagesWhitman’s Poetry Walt Whitman will remain as a well-known, superb poet. Clarence Brown stated, the words of someone speaking on Walt Whitman, â€Å"He is the only one of the conventionally recognized American poets who is worth reading† (37). Walt Whitman is a poet that writes with purpose. His poetry seems to attempt to teach the more desirable behavior and traits for Americans. It depicts the ideal American democrat, peace maker, and a well-rounded person, in general. Not that Walt Whitman is only about democracyRead MoreWalt Whitman s Life And Accomplishments1731 Words   |  7 PagesNikuze Mr. Taylor Walt Whitman December 3 2014 Walt Whitman Walt Whitman is an inspiration to many, one can not really understand America with out him. Walt Whitman was born on May 31, 1819. He had nine siblings including him, he was also the son of Walter Whitman who was a house builder and Louisa van veils or was his mother. They lived in Brooklyn and Long Island in the 1820s and the 1830s. When Whitman turned twelve years old heRead MoreWalt Whitmans Influences1597 Words   |  7 PagesThere have been many influential writers that left their own unique mark on American history; one in particular that has made a significant impact is Walt Whitman. His writing styles evoke different nontraditional methods that did not coincide with the traditions of more â€Å"mainstream† American writers. He did this by establishing a pattern that utilized a lot of free verse compared to the more natural rhyme of poems, and also by describing his subject with emphasis to make the story as real as possibleRead MoreEssay about Walt Whitman744 Words   |  3 Pages During the time period that Walter Whitman lived, there were many controversial things happening to the American people as a whole. One of the most strenuous upon society at the time was the Civil War. The Civil War created many problems in the lives of most Americans during this time period. This war also prompted, and inspired Walt to create many of his historical works of art. The war was raging in both the north and the south during Whitmans golden era of his writing. In the North, the economyRead MoreWalt Whitman s Life That Changed The Way Of Life1690 Words   |  7 Pages Corey Haldiman Goulette Research Paper Walt Whitman Walt used creativity, personal experiences and different ideas in his writing. He moved various times through his childhood, and that may have moved his personality to become slightly neurotic. He has done a lot of things in his life that has changed the way that future poets will write. Walt Whitman entered this world on May thirty-first, eighteen-nineteen in West Hills, New York. He was the second son among nine other children inRead MoreAnalysis Of Frances Willard And Walt Whitman Essay1276 Words   |  6 PagesFrances Willard and Walt Whitman are two significant nineteenth century American figures. Although Willard and Whitman are famous for different reasons, they do have one characteristic in common: they have both been accused of being homosexuals. However, most people do not know this because it is not put in history textbooks or taught in the classroom, for good reason. Public school students should not learn about Willard and Whitman’s homosexuality through thei r textbooks and teachers because itRead More Essay on Walt Whitman and Emily Dickinson970 Words   |  4 Pages Walt Whitman and Emily Dickinson nbsp; In America’s history, there have been so many writers, but only few are known for changing the course of American literature.nbsp; Two writers that fit this description are Emily Dickinson and Walt Whitman.nbsp; These two poets have different styles of writing but possess the same themes from the social environment that they are surrounded in.nbsp; The poetry reflects these poets’ personality and their own style of writing.nbsp; Whitman had an outgoing

Tom Regan’s Animal Rights, Human Wrongs Free Essays

Animal rights, or the establishment and the idea of them being official, have become an increasingly interesting controversy for quite some time. The topic seems to question the common morality and ethics of man, while simultaneously questioning practices that target humanity’s safety, luxury, and in some cases, survival. In such a debate, three articles come to mind. We will write a custom essay sample on Tom Regan’s Animal Rights, Human Wrongs or any similar topic only for you Order Now The debating articles: â€Å"Cow VS Animal Rights†, â€Å"Animal Rights, Human Wrongs†, and â€Å"Proud to be a Speciesist† all deliver a very strong argument to the topic, yet making it quite difficult to ignite a solid solution around the topic, being that each article is elaborate and thorough in arguing their point. In â€Å"Animal Rights, Human Wrongs†, the idea of animal rights is directly and thoroughly supported. Written by Tom Regan, the article presents a several cases of animal cruelty in a seemingly attempt to put the reader in a parallel perspective of each animal in attempt to cause the reader to feel sorry or some form of sympathy for each victim. Regan challenges the methods of hunting, industrial forming, and scientific practices on animals, and, using his pity-the-victim strategy, urges the realization of the rights of animals as a group that stands side by side with the humans in matters pertaining legal rights. In Stephen Rose’s article â€Å"Proud to be a Speciesist†, this thought is contradicted directly. Stephen Rose gives an entirely different perspective and idea on the matter of animal rights. In the article, Rose proposes a situation in which the rights, if any exist at all, of mosquitoes and other pests are violated once they’re exterminated by human choice. This situation provides a just argument, being that such pests are killed all the time, yet, if they were ever to attain such rights, concerns questioning their existence would arise and put a complicated spin on the basics of life itself. In â€Å"Cow VS Animal Rights Activist†, written by Linda Hasselstrom, a different view is exploited. The article retains a neutral perspective, being that the writer explains the uses of animals (primarily cows) but does not refrain from informing the reader of all the cow endures while under human use. Even so, Regan uses pathos while illustrating each animal’s demise to convince the reader to share the same view, or â€Å"ideal†, in the matters concerning animal rights. In each situation, he gives a victim, portraying each one as innocent and helpless, and then he gives the description of their death. He paints incredibly vivid pictures of the situation by elaborating on what would presumably be the last moments each animal experienced before their death. Rose, on the other hand, uses a weak form of egos in his writing. Arguing solely from his position as a researcher, Rose has dim credibility and most of his arguments are biased from the perspective of a researcher. This is made obvious when he tries to justify animal research by claiming that it has resulted in many cures for diseases human encounter today. Hasselstrom’s form of logos contributes to her argument in a seemingly complementary fashion. From her perspective, she simply states the pros and cons of ranching and hunting, as well uncover the hardships faced by ranchers that many activists seem to overlook. With all of these arguments at point, the matters of animal rights will remain a controversy as long as the morals and ethics of the common man play a part in its decision. How to cite Tom Regan’s Animal Rights, Human Wrongs, Essay examples

Career Episodes on Chemistry Sample

Career Episode 1 Introduction CE 1.1 This career episode 1 will provide a concentrated snapshot of the project Manufacture of Polymer Grade lactic Acid. I have completed this project as a student of Sinhgad College of engineering. This college is established under the affiliation of the Pune University. I have completed this project on May 2009 as a part of my chemical engineering course work. Chronology: May 2009 Physical Location: Pune, India Name of the Organization: Sinhgad College of Engineering, Sinhgad Technical Education Society Position held: Student Name of the Project: Manufacture of Polymer Grade Lactic Acid Background CE 1.2 In 1780, the Swedish chemist Scheele discovered the existence of the lactic acid. However,Charles E. Avery in Massachusetts, USA, produced it for the first time. Lactic acid is the widely producing carboxylic acid within the normal natural condition. Lactic acid is the simplest form of the hydroxyl acid. This acid contains one carbon atom that is asymmetric in nature. The naming convention of this acid has been influenced by milk. The main reason for this is that it was initially found in the milk. However, the scientific name of this acid is 2- hydroxpropanoic acid [16]. The compounds that can be derived from the lactic acid are substituted propionic acid materials. CE 1.2.1 The Physical Properties of the lactic acid During the course of the project, I have found many physical properties of the Lactic Acid. The physical properties what I have found during the project has been illustrated through the following tabulated format for the better understanding. Property of the Lactic Acid Value Chemical Formula C3H6O3 Chemical Abstracts Registration CAS.-Reg.-No. [79-33-4] Molecular Weight 90.08 Taste Mild Acidic Physical Appearance Aqueous Solution Melting Point 530 C/ 127 0 F Boling Point 2000 C / 3900 F Solubility in water(g/100 g H2O) Miscible Dissociation Constant, Ka 1.38 * 10^ -4 pKa 3.86 pH (0.1 N solution, 25oC) 2.4 pH (0.1% solution, 25oC) 2.9 Odor Slight acrid odor Specific Gravity 1.2 Stability Quite stable under ordinary conditions of use and storage CE 1.2.2 Chemical Properties Oxidation of the lactic acid provides the formation of the formic acid and the oxalic acid. The chemical reaction that completes the oxidation is : 5CH3CHOHCOOH + 4MnO4 - + 12H+ 5CH3COOH + 5CO2 + 4Mn2 + 11H2O The cerium reaction for the lactic acid is one of the most complicated. The reaction is: CH3 CHOHCOOH +CeIV CH CHOHCOOCeIV CH CHOH- +CO2 +CeIII The oxidation process can be completed using chromic acid. The oxidation process through using the chromic acid is as follows CH3 CHOHCOOH + H2 CrO4 CH3CHOCOOHCrO3 H CH3 COCOOH + H2 CrO3 CE 1.2.3 Corrosion The manufacturing of the lactic acid is not so easy. It develops many technical issues even in the case of handling. To handle the corrosion while manufacturing the lactic acid four groups of metals can be used. These four groups of metals can be classified into following way according to the metals resistance to corrosion by lactic acid. The groupings of the metals are as follows: Purely non noble metals that is soluble in the lactic acid through the evaluation of the hydrogen. Through I have found that there are some mental that develops a type of protective coating or corrosion products. Metals that creates reaction with the lactic acid in the presence of the oxygen. However, here I have found that the corrosion rate is completely depends on the rate oxygen reaches the surface of the metal. Passive metals, the nature of this metal is that it can initiate and perform the corrosion in the presence of the air. I found that the nature of passivity develops due to the presence or the formation of the protective layer. Due to this nature, the acid can be break up in passive formation. Metals that are not corroded by the lactic acid. CE 1.2.4 Optical Activity The optical nature of the compound is said to be optically active when it can rotates the plane of the polarized light. The formula that can given the optical activity is 2n2 . In this formula the n denotes the total number of asymmetric carbon atoms present within the compound. I found that the Lactic acid contains only one asymmetric carbon atom. Therefore, according to the formula cited in the first paragraphs I found that the optical activity of lactic acid is 2. The following figure will illustrate the optical activity of the lactic acid. CE 1.3 Use of the Lactic Acid This acid is one of the most widely used acids in the daily life. I found that this acid is most widely used in vegetables as an acidilant and in leather industry to tan the leather. However, the textile and the food industry have used the lower grade lactic acid with the inorganic acid. Other than these, the lactic acid has been used in the many small-scale areas to maintain the pH balance of the materials like cellophanes hardening baths, solder flux, electropolishing and electroplating baths. Other than these sectors, the detergent manufacturing companies use this acid very frequently. I found wide use of this acid has been used widely in the cosmetics and the pharmaceutical industries. It has been used in the development of the lotions, ointments that are topical in nature, anti acne solutions and in the dialysis applications. This acid in the form of calcium lactate has been used to treat the calcium deficiency in the human body. I found that this acid has been used by the polymer industries to develop the biodegradable thermoplastic. I found that the byproduct of the lactic acid methyl lactate is also used very highly by the pharmaceutical industries. The medical professionals to treat different diseases have used the purest quality lactic acid. CE 1.4 Manufacturing through the Chemical Synthesis The lactic acid can be manufactured through two processes. Among them, the most popular is the manufacturing through the chemical synthesis. The commercial sector runs the chemical synthesis based on lactonitrile. The chemical reaction happens in the liquid pressure at higher atmospheric pressures. The process of the chemical reaction follows the following sequential reactions. Hydrogen Cyanide addition: CH3CHO + HCH catalyst CH3CHOHCN In this reaction, the acetaldehyde through the reaction with the hydrogen cyanide in the presence of the proper catalyst develops the lactonitrile. Hydrolysis through H2SO4 CH3CHOHCH + H2O + H2SO4 - CH3CHOHCOOH + (NH4)2SO4 In this chemical reaction, the lactonitrile reacting with the sulphuric acid develops the lactic acid and as a byproduct of this chemical reaction ammonium salt develops. The Esterification CH3CHOHCOOH + CH3OH - CH3CHOHCOOCH3 + H2O In this chemical reaction, the lactic acid reacting with the methanol develops the methyl lactate and as a byproduct, it develops water. H2O Hydrolysis CH3CHOHCOOCH3 + H2O - CH3CHOHCOOH + CH3OH In this reaction, the methyl lactate reacting with the water develops the lactic acid and the methanol. While studying on the manufacturing of the lactic acid through chemical synthesis I found that the only two companies are using this method to produce the lactic acid. Those two companies are Sterling Chemicals Inc. of United States Of America and the Musashino of Japan. However, I found that there is another way to manufacture lactic acid. This is through the catalyzed degradation of sugar, reaction of acetaldehyde, oxidation of propylene glycol, water and carbon monoxide. CE 1.5 Manufacturing of Lactic Acid through Carbohydrate Fermentation The manufacturing of the lactic acid can be done through the carbohydrate fermentation. The manufacturing of the lactic acid depends on the strain used while the chemical reaction has ben conducted. I found that the manufacturing of the lactic acid through the carbohydrate fermentation follows the following steps. Neutralization and Fermentation C6H12O6 + Ca (OH)2 ----fermentation 2(CH3CHOHCOO)Ca2+ + 2H2O In this reaction, the carbohydrate through the calcium hydroxide develops the calcium lactate and water as the byproduct. Hydrolysis through H2SO4 2(CH3CHOHCOO)Ca2+ + H2SO4 - 2CH3CHOHCOOH + CaSO4 In this reaction, the calcium lactate through the hydrolysis with the H2SO4 develops the lactic acid and the calcium sulphate as a byproduct of the hydrolysis. The Esterrification CH3CHOHCOOH + CH3OH CH3CHOHCOOCH3 + H2O In this reaction the lactic acid through the esterification produces the menthol and the methyl lactate. Hydrolysis through H2O CH3CHOHCOOCH3 + H2O CH3CHOHCOOH + CH3OH In this hydrolysis through the water the methyl lactate turns in to the lactic acid and as a byproduct of this hydrolysis methanol comes out. CE 1.6 Manufacturing process While I was working on the project I found that, the commercial production processes follows a few very specific process. The production process follows the following steps Crude lactic acid preparation Esterification through trickle phase continuous counter current method Esterification through trickle phase continuous counter current method through hydroquinone stabilizer Esterification through trickle phase continuous counter current method through the doping of known impurities in the feed of lactic acid Highly pure methyl lactate isolation Highly pure S-(-)-methyl lactate hydrolysis to extract the highly pure L-(+)- lactic acid CE 1.7 Reactors used for the manufacturing of the Lactic Acid To produce the polymer grade lactic acid commercially I found that two types of fluid-fluid reactors were used. One is column or tower reactors and the other one is the tank reactors. CE 1.8 Required Materials and Energy Balance The following list will provide the list for the required material and the required energy balance. Required Output: 3500 TPA (Tons per annum) of 90 wt.% L(+) lactic acid. Plant Running: 24 hours for 300 days in a year. Module basis required output:111 mols/hr of L (+) Lactic Acid and 2700.617 mols/hr of water. Summary CE 1.9 Throughout this career episode, I have found the various aspects of the lactic acid usage and the production process of it. I found that the lactic acid can be produced in two ways and I have learnt both the ways. However, I found that while the production of the lactic acid goes into the commercialization the process and the complexity of the manufacturing becomes complex. Career Episode 2 Introduction CE 2.1 In this career episode, I have developed biodiesel using the algae as a source. I have done this project through taking the sole responsibility. I have done this project as a student of the Sinhgad College of Engineering. This college is established under the affiliation of the Pune University. This project was very much require to complete my course. Chronology: Physical Location: Pune, India Name of the Organization: Sinhgad College of Engineering, Sinhgad Technical Education Society Position held: Student Name of the Project: Biodiesel from Algae Background CE 2.2 The growing trend of the global warming and the decreasing resource of the conventional energy have boosted the trend of the development of the alternative fuel. In the alternative fuel development, the biodiesel is leading the path. I have found that in recent time the most of the renewable energy companies are trying to develop the sustainable biodiesel from the sugarcane and from the oil crops. The raw development procedure what I have found while working in this project is that the biodiesel is coming through the carbohydrates conversion within the plants. The biodiesel family has been illustrated through the following figure. I found that the most of the developed and the emerging nations are trying to promote the use and the production of the biodiesel to reduce the use of the conventional fuel. The countries like the USA are promoting the use of biodiesel very aggressively. The International energy agency and the European union have taken a initiative to increase the use of biodiesel in the commercial segment up to 6% within a five year period. The emerging economies like the India and China are promoting the research and development of the biodiesel to draw the trading advantage. Therefore, I have experienced that the future of biodiesel as a non-conventional fuel in the global market is very much bright. CE 2.3 The advantage of the biodiesel Biodiesel as a commercial product is having a very bright future. However, the other advantages for the development of the biodiesel are: The source of the biodiesel is in the CO2 combustion cycle The biodiesel can be obtained from the commonly available biomass very easily The sustainability of the biodiesel is very much higher than the other renewable resources The use and the development of the biodiesel are very much advantageous for the nations economy also. On this context I have seen that if the EU remains to reduce the spending by 6% in the conventional energy resources they will remain able to save a lots of spending and that will strengthen the EUs economy. CE 2.4 Microalgae biofuel The photosynthetic microalgae are the special kind of microorganism that converts sunlight, carbon dioxide and water into the algal biomass. I have seen that these kind of algal are the source of rich oil. The oil resource from these algal can be a source of the commercial interest for the stakeholders of the biodiesel project in the future times. The entire development cycle of the energy through the microalgae has been illustrated through the figure. The algal bio mass has been produced through the cultivation of the microalgae. During the bio mass production, the external nutrients have been added to increase the growth of the algal. Once the bio mass recovery is done then the bio mass has been extracted from the recovered biomass for the energy production. After this process through the animal feed and the other process the required resource has been obtained. Then from this resource, the bio energy has been developed through the biogas. CE 2.5 Biomass algae properties Algae is the most diverse atmospheric organism. The formation of the algae has been ranged from the unicellular to the multi-cellular. I have learnt that through the different journals and the books that in present time almost 30,000 different algae are present. Among this 30,000 different species 10,000 different resources are found within the marine water. However, I have learnt that the most effective algae are those algae that have the chloroplasts and membrane. The other thing, what I have found that the algae can be found in various different formats. The format ranges from the land plant to the sea plants. All the algae produce the oxygen and other byproducts. CE 2.6 Algae Habitat I have found that the algae are the most robust organisms available in the earth. The main reason for the higher number of species is that it can survive under any natural circumstances. However, I have found that the most favorable birthplace for the algae is the wet and damp place. It has been found that the terrestrial and the tropical algae are not that much effective for the production of the biodiesel than the algae produced in the wet and damp place. The other thing what I have found while working with this project is algae can grow in any part of the world starting from the deepest point of the sea to the driest land on the earth. CE 2.7 Composition of Algae I found that the most of the algae are made of the eukaryotic cells. The differential features of this cell are that it is organelles but contain the nuclei. The composition of the algae differs from the composition of the proteins, carbohydrates and the different types of chlorophyll. I have learnt that the some of the algae can only have chlorophyll. The following table will illustrate the composition of the different kind of algae strains. Strain Protein Carbohydrates Lipids Nucleic acid Scenedesmus quadricauda 47 - 1.9 - Scenedesmus obliquus 50-56 10-17 12-14 3-6 Chlamydomonas rheinhardii 48 17 21 - Scenedesmus dimorphus 8-18 21-52 16-40 - Chlorella vulgaris 51-58 12-17 14-22 4-5 Spirogyra sp. 6-20 33-54 11-21 - Chlorella pyrenoidosa 57 26 2 - Dunaliella bioculata 49 4 8 - Euglena gracilis 39-61 14-18 14-20 - Dunaliella salina 57 32 6 - Prymnesium parvum 28-45 25-33 22-18 1-2 Porphyridium cruentum 28-39 40-57 9-14 - Tetraselmis maculata 52 15 3 - Spirulina platensis 46-63 8-14 4-9 2-5 Synechoccus sp. 63 15 11 5 Spirulina maxima 60-71 13-16 6-7 3-4.5 Anabaena cylindrica 43-56 25-30 4-7 - CE 2.8 The main reason for selecting the Algae (Microalgae) Before the staring of the project, I have looked after about the other resources for the development of the biodiesel. However, through considering four aspects I found that the algae are the best source for the development of the biodiesel. The key four aspects that I have taken under consideration are: Climate change factor Security of the energy Synergy between the algae and the coal Aquatic biomass v/s the terrestrial biomass Carbon dioxide is believed to be the most harmful pollutant for the natural environment. I found that the emergence of the green house effect has increased the environmental pollution. Due to these environmental conditions, the algae will be the most attractive resource for the biodiesel. Moreover, the algae development will reduce the effect of the carbon dioxide. The energy security is a very large concern for the current world. The coal and the petroleum are going to be a scary resource for the energy sector in coming day. Therefore, the energy production through the algae is going to be the best option. The other reason for the selection of the algae is that it produces rich quality oil that have a good commercial prospect. The energy production through the coal and the fossils emits carbon dioxide. However, the algae have the ability to offset the harmful effect of the emitted carbon dioxide. I have seen that the most of the algae develops in the aquatic environment. The most of the industries have acquired the available land. Therefore, if the energy development through the algae is possible then it will create a synergy between the aquatic biomass and the terrestrial biomass. CE 2.8 Algae production system I have found that the algae can be a good prospect for the agricultural activity. On the production, I have found that the biomass can be produced through two ways. One is the open system through the race away ponds and the other one is through the closed systems. In closed system the biomass production is done through the photo bioreactors. The structure of the race away pond generally follows the following structure. In the closed system, it needs to be use different types of photo bioreactors. The most commonly used reactors I found are the flat plate photo bioreactors, tabular photo bioreactors, vertical column photo bioreactors and internally illuminated photo bioreactors. Summary CE 2.9 Throughout this project I have learnt that the biodiesel has a wider scope of commercial success. Moreover, it the main bright aspect is that the most of the developed and the developing nations are considering this fuel as a boost to the economy. The other thing what I have learnt is that algae is the safest and the most sustainable resource for the development of the biodiesel because of it sustainability in the different climatic conditions. Career Episode 3 CE 3.1 This career episode 3 demonstrates my understanding about the hydrodynamics through the project A study of hydrodynamics in Bubble column reactors. I have done this project through sole responsibility. I have completed this project as a part of my academic requirement. I have conducted this project in my college, which is STESS Sinhgad College of Engineering. This college is affiliated under the Pune University. Chronology:April 2008 Physical Location:Pune, India Name of the Organization: Sinhgad College of Engineering, Sinhgad Technical Education Society Position held: Student Name of the Project: A study of Hydrodynamics in bubble column reactors Background CE 3.2 The main concept of the bubble column is that in this column the discontinuous gas phase bubble gradually becomes continuous. The bubble column is the general multiphase reactors. It contains three main categories one is the trickle bed reactor this can be fixed or packed bed, the other one is the fluidized bed reactor and the third one is the bubble column reactor. CE 3.3 Application of the Bubble Column Reactor I have found that the application of the bubble column reactor in many areas. However, the most important areas where I have found the bubble column reactor has used very widely are: In the production of the synthetic fuel through the conversion of gas In the biochemical process Coal liquefaction process through the Fischer Tropsch process Environment friendly synthetic oil production system usages this kind of reactors In the synthesis of the methanol Air oxidation and oxidation of the inorganic compounds In industry, the most commonly used bubble columns is the vertically sparged bubble column reactors. In industry, it is used for the chemical process like the Fischer tropsch synthesis, liquefaction of the coal etc. CE 3.4 The advantage of using the bubble column reactor The main advantages what I have found in using the bubble column reactor are : Lesser complexity due to the absence of the moving parts Lesser effort in the maintenance Higher heat transfer rate is possible through this reactor The installation cost is much lower than the other reactors. The main reason behind this is that it occupies lesser amount of space. Higher durability The pace of the reaction can be controlled very easily in this reactor. These are the main advantages what I have found while looked for the popularity of this reactor in the industry sector. CE 3.5 The major disadvantage of the bubble column reactor The major disadvantage what I have found in using these kinds of reactor are the chances of higher-pressure drop and the coalescence. CE 3.6 The main characteristic of the Bubble column reactor The main characteristics of the bubble column reactor are: Flow Regimes, it is the heterogeneous flow regime. This flow is achieved at the low superficial gas velocities. The velocity of the gas remains lesser than the 5 cmfs in the semi batched columns. The other characteristic of the bubble column reactors is the gas hold up. The gas hold up defines the volume fraction of the gas phase that is occupied by the gas bubbles. While working in this project I have found that the gas holdup plays a very important role in the bubble column reactor. CE 3.7 Mass Transfer and the Heat Transfer The mass transfer refers to the liquid side mass transfer. The entire transfer rate is controlled and maintained by the liquid side mass transfer coefficient. I found that the difference in the coefficient generally occurs due to the variations in the interfacial area. I found that most of the journals and the books highly concentrate in the estimation of the mass transfer coefficient. The heat transfer coefficient is related with the endothermic heat supply and the exothermic heat operation. In this content I found that the most important part is the transfer of heat from the walls of the reactor and the inside coils that is directly connected with the liquid. I have found that the heat transfer rate in the case of the gas-liquid bubble column has been recorded approximately 100 times higher than the single phased flow. Summary CE 3.8 This project has enabled me to understand the various aspects of the bubble column reactors. Through the study, I also found the important relationship between the various coefficients of the bubble column reactors. Throughout this study, I have understood the main reasons for the use of the bubble column reactor in the most of the industrial sector. However, I also found that the some sort of limitations of the usage of the bubble column reactor in the industry sector. Though it has been seen that if the instrument is used in the controlled manner it can provide much better result than the other reactors.