The Ethics Of Stem Cell Research Essay - 1994 Words

As with all fields of science, stem cells have, and are still, been the subject of multiple court cases, some of which conclude with the defendant s case winning. For example in the Moore v. Regents of University of California et al, the plaintiff accused the Regents of University of California, specifically Dr. Golde, of using his cells for lucrative medical research without his permission (Moore v. The Regents of The University of California et al., 1990). This case doesn’t specifically address stem cells, but it opened the door to how much ownership a patient really has over his cells once they have been removed. It affected the position that donors of stem cells, embryos and adults, have in these types of controversial cases, and thus had a negative impact on the ethics of stem cells. Stem cell research has always had a bad reputation, particularly when you’re talking about the donor’s or patient’s health. When stem cells were first used after their discovery in 1968, there was little concern for said people’s health. After the first â€Å"test tube† baby in 1978, cell harvesting was considered to be completely safe and widely used (Beeson D., 2006). Hence, it lead to the assumption that egg harvesting for stem cells was completely safe, but studies performed years afterwards revealed that the drugs used on the patient s introduced a multitude of problems to their health. Short-term effects caused by the drugs and hormones used in a two-step process were not brought up toShow MoreRelatedStem Cell Research in Ethics999 Words   |  4 PagesStem Cell Research in Ethics We are entering a brave new world where one can grow a heart in a petri plate then go on to surgically putting it into a real living boy who desperately needs it. This sounds like a tale of fiction. However now, scientists are currently working to produce such organs that save lives and obviate the usual failure and feared rejection by the recipient’s body. Stem cell research has traditionally been perceived to be horrific when it destroys a living embryo itselfRead MoreThe Ethics Of Stem Cell Research1557 Words   |  7 Pagesthese outstanding medical advances a self-renewing stem cell that regenerates and gives rise to all cells and tissues of the body was discovered. The controversy of such finding of abilities of stem cell is that they can only be extracted from the human embryo. In order to extort stem cells from the embryo it needs to be aborted. The extraction needs to be done just days after conception or between the fifth and the ninth week. Though stem cell rese arch has astonishing potential to save many lives dueRead MoreThe Ethics Of Stem Cell Research1365 Words   |  6 PagesStem cells are cells that have the potential to develop into different types of cells in the body. Stem cells also act as a repair system for many tissues in the body by dividing repeatedly to replenish other cells within a person (National Institutes of Health). Stem cell research seeks to further the advancement of the use of stem cells as well as to find an ethical way to study them. In November 1998, researchers found a way to isolate and culture human embryonic stem cells, (Bevington 2005).Read MoreThe Ethics Of Stem Cell Research1643 Words   |  7 PagesMichael Thomas Philosophy 3520 Bioethics The Ethics of Stem Cell Research Science fiction has tried to encapsulate social responses that could arise with the development of genetically altered or â€Å"enhanced† human beings. Regenerative medicine, genetic cloning and life extension are all terms that sound like they came out of a fantastic film or novel, though they are in fact subjects of great research and heated debates. Embryonic stem cells are arguably the quintessential building block ofRead MoreThe Ethics Of Stem Cell Research2651 Words   |  11 PagesThe Ethics of Stem Cell Research: How the Induced Pluripotent Stem Cell Changed Them Few areas in science are surrounded by as much controversy as the area of stem cell research. Some scientists and doctors see it as a way to return their patients to wellness, while others claim it’s taking a life. Recent break-throughs in science and medicine may yield a safer alternative to the use of stem cells from embryos. Embryonic stem cell research should not be allowed, because it is unethical to takeRead More The Ethics of Stem Cell Research Essay1005 Words   |  5 Pages While some people might say that stem cell research is immoral and unethical, others believe that it is a magical solution for almost any problem, thus leading to a very controversial issue. Scientists have been searching for years for ways to eradicate incurable diseases and perform other medical procedures that yesterdays technology would not fix. With the rapidly arising, positive research on stem cell technology, the potential that exists to restore any deficiency is in the same way, like lyRead MoreThe Ethics of Stem Cell Research Essay741 Words   |  3 Pages Embryonic stem cell research can be easily defined. A stem is defined as something that is developed from. A cell is defined as a microscopic living organism. According to Dennis Hollinger, Embryonic stem cell research uses from the embryos inner cell mass that give rise to each of the human bodys many different tissue types(1). In our modern day society, stem cell research has become a controversial topic. Several people strongly oppose the idea of the research, but many are struggling forRead MoreThe Ethics And Morality Of Stem Cell Research1990 Words   |  8 Pages The Ethics and Morality Of Stem Cell Research When does life begin? Does it occur at the time of fertilization? Does it begin at 12 weeks? 6? Or is there some other test determining whether or not a life begins and along with it the rights, that reside to man. The natural rights that belong to every human being, most importantly of which, the right to life. This is the discussion and debate that have been in the forefront of controversial issues for the past 40 years. In most cases the topicRead MoreThe Ethics Of Embryonic Stem Cell Research1520 Words   |  7 PagesGulyas American Government 16 December 2014 The Ethics of Embryonic Stem Cell Research In the 21st century, disease is rampant and for most diseases, we have no cure because we haven t researched them long enough to find a specialized cure. One option that we have is human embryonic stem cell (HESC) research. HESC research consists of using human embryonic stem cells, which are very flexible and adaptive to create the necessary cells to develop future cell-based therapies for currently untreatable diseasesRead MoreStem Cell Research, Ethics And Policy Essay2393 Words   |  10 PagesIntroduction Stem cell research and engineering is a widely disputed topic that often divides people in science, ethics, and religion. In order to fully understand the controversy surrounding this area of scientific research and discovery, one must be informed as to what stem cells are. In the article, â€Å"Human Embryonic Stem Cells: Research, Ethics and Policy†, stem cells are described as â€Å"primitive cells with the capacity to divide and give rise to more identical stem cells or to specialize and

To what extent was the USA a Divided Union in the years 1941-1980 Free Essays

Politically the USA has always been a democracy, with an allowance for all political parties to express their opinions. But there have been times in the aforementioned decades from 1941-1980 where political beliefs, like socialism and communism have been feared in the government to such an extent that McCarthyism was allowed to become mainstream in the 1950’s. This fear was so great that people were tried and prosecuted on false allegations, and that based on these lies most were sentenced to jail, and some were even killed, like the Rosenbergs. We will write a custom essay sample on To what extent was the USA a Divided Union in the years 1941-1980? or any similar topic only for you Order Now The Rosenbergs were nuclear scientists who during the Second World War, while the USA was allied with the USSR, gave some non-classified information to the Soviets. They were tried and executed in 1953. True, some of the accused were indeed communists, or had communist beliefs, but none of them had ever done anything to jeopardise the security of the USA, nor had the power to. Also in the American political system there did not exist anyone to represent the minority blacks, as they did not have the power to vote until the 1965 Voting Rights Act, and even then there never was a black president voted into power as there is still a certain amount of non active racial discrimination in the American governmental system till the 1980’s. Socially, Racism has always existed between the minority WASPs who hold the power in America and other racial groups, mainly the black American population who were originally brought to the USA as slaves. This discrimination on basis of skin colour was against the American constitution, and should have been illegal, but it was legalised with the inception of the ‘Jim Crow’ laws. These sets of corrupt racist laws had many preposterous clauses such as the ‘grandfather law’ and others, which basically denied black Americans of their inalienable civil rights. This started the Civil Rights movement, but one case of racial discrimination was the trigger. This was the Montgomery Bus Boycott of 1955 in which the black American majority bus users boycotted the bus service on command of Martin Luther King, later to be the leader in black civil rights. His movements gained many successes, such as the pre-mentioned 1965 Voting rights Act, which outlawed the discrimination of voting on basis of race, and most importantly the Civil Rights Act of 1964, which gave black people the equal rights to do whatever they pleased, and gave them equal employment opportunities. Other more radical black American movements also came into being, such as Black Power, with the Black Panthers being the main case. This movement charaded in the guise of militants, wearing a uniform and carrying unloaded guns, to show that they would use violence if needed, but they were indeed a charity organisation, providing shelters and soup kitchens for the poor. They were feared because of their leftist beliefs and were hunted down by the FBI. Protest movements later became much more common in the 60s and 70s, following the lead of the Civil Rights movement. The Women’s Movement fought for equal rights based on sex and won their legal battle. The student movement generally rebelled against the norm, but they mainly protested against the Vietnam War as they felt there was no need for it. The Native Americans were the most disadvantaged minority, but their formation of AIM was a success in itself, and they still to this day fight to try and regained their lost balance of life. Economically the USA has prospered, but not all parties in the USA have taken their share of prosperity. There is an increasing underclass, stuck in a vicious circle, with no education, therefore no employment, and no employment, therefore no money. This still mainly made up of black Americans living in the slums and ghettoes of modern day America. Also up to the 1970’s black Americans and women were discriminated against in the workplace, and their chances of getting jobs were minimal. Many different cultures exist in the USA, mainly because of the largely immigrant population. This brings a lot of different cultures into the mainstream, creating such phenomenon as hippies. These people follow strange religions and practises, completely ignoring the age-old idea of civilisation and ‘pop’ culture. The government liked to think of things the ‘American way’, a father coming home from work to his wife who has baked him and his children an apple pie, but in most cases this almost ceased to exist, swamped by the counter-culture of drugs and outlandish clothes. Overall I think that the USA was a greatly divided union in the decades from 1941-1980, and that this was destined to be in a new land full of immigrants from different societies, races and creeds. How to cite To what extent was the USA a Divided Union in the years 1941-1980?, Papers

Genocide in East Timor Essay Example For Students

Genocide in East Timor Essay This is a report about genocide. Genocide is the deliberate assassination of entire peoples. There are many different types of genocide. There are also many different times and places at which it has occurred. The one that this report is on is East Timor . East Timor people had a unique and different belief than most people. Like Native Americans, they believed that everything that walks, flies, swims, and crawls is a person. In their religion, everything is a living thing and at one time, all things spoke. Even the ground cried out when people trod upon it and the trees and grasses screamed when they were cut. The country that was invading East Timor was the Indonesians. The reason was simply because they just did not like their ways. They no longer permitted the rituals of East Timor people. So they began the assassination of them. The United States of America couldnt do shit to stop them. Canada plays a major role in the abuse of the right of the Timorese to an independent nation. Canada was the supplier of weapons to Indonesia for wars. In the period between 1987-1991, Canadian aid to the Indonesians was estimated to reach $450 million dollars. This invasion took place in 1975. The death toll was about 250,OOO. 100,000 of them were starved (40%). That is about two out of every five people. A similar event is taking place in Iraq today. History always repeats itself. Something like this is probably going to happen again in the near future. .

Things Fall Apart An Analysis Essay Example For Students

Things Fall Apart: An Analysis Essay The culture of the Umuofia society before the colonial infiltration, may be hard to understand but we are forced by Achebe to realize it has traditions and customs that make it work. Although, looking at it from our Judaeo-Christian point of view we may be appalled by some of their practices. We also have to realize that they have strengths. Things Fall apart is the idea of balance and interdependence, earth and sky, individual and community, man and woman or different perspectives on the same situation. The central image of this balance is contained in the Ibo concept of chi,† which occurs throughout the novel. A persons â€Å"chi† is their destiny, his inner self, â€Å"you wouldn’t challenge your â€Å"chi† to a wrestling match,† as did Okonkwo when he assisted in the killing of Ikemefuna, whom he loved and who called him father. Okonkwo sins not only against the earth goddess, protector of family relations, but also against his inner most feelings or his â€Å"chi. † Any bad luck that occurs, people of this culture would say that you have a bad â€Å"chi. We will write a custom essay on Things Fall Apart: An Analysis specifically for you for only $16.38 $13.9/page Order now Okonkwo’s destiny is marked by bad luck, one reason may be that he is so riven by the fear of resembling his father that he struggles to repress part of his personality with predictably afflicted results. This was a society where a man was judged by his own achievement and not that of his fathers. Yams were the primary crop of Umuofia. A sign of manliness was if you could farm yams to feed your family. Okonkwo is respected because of his hard work. The complex patterns of Umuofia’s economic and social customs materialize throughout this novel as we see Okonkwo compelled to rid himself of any similarities that his father had. Unoka had no titles, was lazy and when he died was greatly in debt. Some may wonder how a society like the Ibo’s functioned, how they enforce its laws with no kings, no organized police force, and no standing army. Indeed this is something our â€Å"modern† culture could study. These things were accomplished through the functions of the masked spirits. The Egwugwu, represents the village’s highest spiritual and judicial authority. The masked spirits are believed to represent their ancestors. This supports the myth â€Å"The land of the living was not far removed from the domain of the ancestors. †

How to Solve a Redox Reaction Problem

How to Solve a Redox Reaction Problem This is a worked example redox reaction problem showing how to calculate volume and concentration of reactants and products using a balanced redox equation. Key Takeaways: Redox Reaction Chemistry Problem A redox reaction is a chemical reaction in which reduction and oxidation occur.The first step in solving any redox reaction is to balance the redox equation. This is a chemical equation that must be balanced for charge as well as mass.Once the redox equation is balanced, use the mole ratio to find the concentration or volume of any reactant or product, provided the volume and concentration of any other reactant or product is known. Quick Redox Review A redox reaction is a type of chemical reaction in which reduction and oxidation occur. Because electrons are transferred between chemical species, ions form. So, to balance a redox reaction requires not only balancing mass (number and type of atoms on each side of the equation), but also charge. In other words, the number of positive and negative electrical charges on both sides of the reaction arrow are the same in a balanced equation. Once the equation is balanced, the mole ratio may be used to determine the volume or concentration of any reactant or product as long as the volume and concentration of any species is known. Redox Reaction Problem Given the following balanced redox equation for the reaction between MnO4- and Fe2 in an acidic solution: MnO4-(aq) 5 Fe2(aq) 8 H(aq) → Mn2(aq) 5 Fe3(aq) 4 H2O Calculate the volume of 0.100 M KMnO4 needed to react with 25.0 cm3 0.100 M Fe2 and the concentration of Fe2 in a solution if you know that 20.0 cm3 of solution reacts with 18.0 cm3 of 0.100 KMnO4. How to Solve Since the redox equation is balanced, 1 mol of MnO4- reacts with 5 mol of Fe2. Using this, we can obtain the number of moles of Fe2: moles Fe2 0.100 mol/L x 0.0250 L moles Fe2 2.50 x 10-3 mol Using this value: moles MnO4- 2.50 x 10-3 mol Fe2 x (1 mol MnO4-/ 5 mol Fe2) moles MnO4- 5.00 x 10-4 mol MnO4- volume of 0.100 M KMnO4 (5.00 x 10-4 mol) / (1.00 x 10-1 mol/L) volume of 0.100 M KMnO4 5.00 x 10-3 L 5.00 cm3 To obtain the concentration of Fe2 asked in the second part of this question, the problem is worked the same way except solving for the unknown iron ion concentration: moles MnO4- 0.100 mol/L x 0.180 L moles MnO4- 1.80 x 10-3 mol moles Fe2 (1.80 x 10-3 mol MnO4-) x (5 mol Fe2 / 1 mol MnO4) moles Fe2 9.00 x 10-3 mol Fe2 concentration Fe2 (9.00 x 10-3 mol Fe2) / (2.00 x 10-2 L) concentration Fe2 0.450 M Tips for Success When solving this type of problem, its important to check your work: Check to make certain the ionic equation is balanced. Make certain the number and type of atoms is the same on both sides of the equation. Make certain the net electrical charge is the same on both sides of the reaction.Be careful to work with the mole ratio between reactants and products and not the gram quantities. You may be asked to provide a final answer in grams. If so, work the problem using moles and then use the molecular mass of the species to convert between units. The molecular mass is the sum of the atomic weights of the elements in a compound. Multiply the atomic weights of atoms by any subscripts following their symbol. Dont multiply by the coefficient in front of the compound in the equation because youve already taken that into account by this point!Be careful to report moles, grams, concentration, etc., using the correct number of significant figures. Sources Schà ¼ring, J., Schulz, H. D., Fischer, W. R., Bà ¶ttcher, J., Duijnisveld, W. H., eds (1999). Redox: Fundamentals, Processes and Applications. Springer-Verlag, Heidelberg ISBN 978-3-540-66528-1.Tratnyek, Paul G.; Grundl, Timothy J.; Haderlein, Stefan B., eds. (2011). Aquatic Redox Chemistry. ACS Symposium Series. 1071. ISBN 9780841226524.

The 6 Most Common Resume Mistakes

The 6 Most Common Resume Mistakes For some mistakes in life, you can look back and laugh. I mean, no one actually likes their seventh grade haircut, right? Other mistakes produce a similar cringe, but also regret because you know you could have done so much better. A great example of that one is when you make avoidable mistakes on your resume. A little care and attention at the time could have saved you, and opened up opportunities. Follow these best resume tips, and avoid some of the most popular resume mistakes. 1. The too-casual resume.Back in the good old days of the internet, everyone on AOL had a fun, kicky username that was also their email address. However, MegaAwesomeChick@aol.com probably didn’t anticipate that someday she’d be using that handle to look for gainful employment. These days, there’s zero excuse to use your personal email address on your resume if it’s just that- personal- in nature. Email is free and it is plentiful. So even if you have all of your gamer accounts po inted at IWinYouLose@gmail.com, do yourself a favor and also create a JSmith@gmail.com account too. You want the employer to know that you can separate your professional self from your personal one. That email address at the very top of your resume is the first chance for a red flag.Similarly, no nicknames. If you’re known as â€Å"Big Dog† by all the other salespeople at your current job, don’t feel like you need to include that in your resume.2. The too-much-info resume.If you back up from your resume and squint, and it just looks like one big brick of text, it’s time to revise. You want it to read like an outline of only the most important points about your career. An interview will give you the chance to give background, context, and any additional info you want them to know.3. The outdated resume.Job hunting in 2016 is a much different creature than it was in 1996. Elements fall out of style over the years, and doggedly including them in your current resume can make your packaging seem out of date. A prime example of this is the â€Å"objective† statement in the resume, usually a blurb right under the header. The rà ©sumà © itself is a testament to your goal of getting this job, so you might as well take the space back and include even more action items about how awesome you are.4. The way-back-when resume.If you’ve just graduated from high school and haven’t yet built up a long resume, by all means include your school information and diploma status. If you’re 35 and have had more experience, leave it out. Your resume should be a snapshot of who you are, and tailored for the job you’re seeking. If information is more than 10  years old or not directly relevant for the job you’re applying for, consider leaving it out altogether.5. The non-proofread resume.This cannot be said enough times: please, please, please check your resume thoroughly for typos, incorrect info, any weirdness at all before you send it out. There are no backsies once you send it out. The best way to do this is to have a trusted (but neutral) friend read it for you, looking for any mistakes that your own eye might have skipped over.6. The victim-of-spellcheck resume.Remember a second ago, when I said that you should check the resume to death? That has a caveat: don’t depend on your word processing app’s spellchecker. The spellcheck program won’t flag words that may be used wrong, but are spelled perfectly fine (too/to/two, there/their/they’re, etc.). And don’t get me started on AutoCorrect†¦Always have a human read it thoroughly to make sure you’re saying what you think you’re saying.We are our own worst enemies sometimes, and nowhere is this more common than in a job search. Stay out of your own way, and you might be amazed at the opportunities that come along.

Urban tourism, heritage and culture Essay Example | Topics and Well Written Essays - 2000 words

Urban tourism, heritage and culture - Essay Example Cultural and heritage centers are remarkable for contributing towards tourism industry, and generating income to towns and communities. Ð ¡ultures and heritages may be remarkable for construction of historical narratives regarding a culture, or concerning particular communities. In most cases, promotion of heritage centers and cultural heritages are not meant for tourism, but to preserve identity of communities for long periods. This heritage may be a form of symbolism, representing spectacular events, which may have shaped the lives and history of the people concerned. The main aspect in conservation of heritages is to maintain these symbols, and the unique characteristics of the preserved heritages are responsible for attracting both local and international tourists, as unique images of identity. Attraction of tourists to heritage sites leads to increased income generated through tourism activities in these regions, and urban tourism may result from this tourist activities. Many a uthorities have therefore reconditioned cities and towns near heritage centers to attract more tourists with an aim of not only preserving heritages, but to increase income in the tourism industry. In this report, the Amiens Cathedral of Notre- Dame in France will be considered as a precious heritage center that has been recognized and listed under UNESCO’s global heritage centers. Historical Background Amiens Cathedral, located in the heart of Picardy is among the largest Gothic churches constructed in the 13th century. The cathedral particularly stands unique in its construction, coherence of its plan, amazing fine displays of sculptures in the principle facade and the South transept, among other spectacular aspects (UNESCO, 2012). The cathedral was initiated in 1152 under the auspices of Bishop Evard, who made huge collections from clergy and people for this noble function (Brown 1846, 100). The cathedral was designed by Robert Lusarche as the architect, but the bishop and Lusdarche did not live to see the completion of the Cathedral that was completed in 1288 (Brown 1846, 100). However, the cathedral was first designed under the Romanesque architecture but was destroyed by fire in 1218, making reconstruction to be carried out in 1220 (UNESCO, 2012). Many of the statues and decorations in the cathedral were completed around 14th century; many years after the completion of the cathedral. The Amiens Cathedral is very different from other cathedrals and buildings in England, and other European locations in many aspects; including both style and design (Brown 1846, 101). This Cathedral is documented to be more advanced and perfect compared to other Gothic architectural works that were prominent during this period (Brown 1846, 101). The French cathedral is in many aspects different from many other cathedrals designed according to the Gothic architecture in this period, making it the most remarkable Gothic architectural work in history. The cathedral was r ecognized in 1972 by UNESCO under the World Heritage Site Agreement, but was to be officially listed as a world heritage in 1981 (Durand 2012, 9).This recognition changed the entire Amiens area, with the town being reconfigured as a tourist’s destination, leading to growth of more tourism infrastructure, consequently attracting thousands of tourists in this area, considering that France is one of the global leading tourist destinations today. Heritages leading to urban tourism Jenkins (1999) uses the word destination image a number of times and in different contexts. The image of any tourist destination is firstly designed in the cognitive opinion of the events, typical features, and character of the place. Increasing the information related to the image of such cities or places through organic means leads to enhanced clarity as Jenkins further elaborates, and this enhanced clarity leads to more tourists flocking these

Marketing Assignment Example | Topics and Well Written Essays - 250 words - 2

Marketing - Assignment Example The advertising team understands that self-image is an important concept that individuals possess. In the modern society, the concept of body image is highly romanticized in society. People are extremely aware of their body image and will do anything to look appealing for the interest sex. In order to promote their product, the commercials use all sorts of fancy computer imaging techniques and animations to create an illusion that fat loss is actually occurring. The advertisement completely crosses the limits as it shows obese models strapping the belts and then actually feeling it â€Å"working.† The commercial never states the fact that the product is proven to eliminate or even reduce fat. The question remains—is it legal? Yes, but it is absolutely unethical as it hurts consumers in various ways. First and foremost, the commercial is detrimental towards consumers because it promotes wrong advertisement as it never states that it supports fat loss, but rather an illus ion of a temporary water loss. Secondly, the advertisement claims that â€Å"results are not typical.† However, it is certain that the companies prey on their consumers that these so-called transformations will leave their audience in awe and will attract them to buy the product. Clearly, that is unethical. Lastly, consumers are given wrong information and data about these products.

The Companies Ordinance Essay Example for Free

The Companies Ordinance Essay II. REGISTERED OFFICE: The registered office of the company will be situated be situated in the province of Sindh III. OBJECT CLAUSE: The objects for which the Company is established are: 1. To manufacture, treat, produce, process, prepare, pack, bottle, can import, export, buy, Sell, market, distribute or otherwise deal in any or all types of foods including without limitation all kinds of raw, processed and prepared food and food products including without limitation dairy products, meat, fish, vegetables, poultry, fruit and fruit Juices, powders and syrups; 2. To advertise all or any of the business and goods of the Company in any way that may be thought advisable; 3. To open and operate accounts, overdraft cash, credit and loan accounts and to keep fixed and other deposits with banks, firms, corporations and institutions, loan offices and other concerns; 4. To do all or any of the above things in any part of the world either as principals, agents, Contractors or otherwise and either alone or in conjunction with others, but not to act as a managing agent 5. To expend money in experimenting on and testing and improving or seeking to improve any patents, rights, invention, discoveries, processes or information of the Company or which the Company may acquire or propose to acquire; IV. LIABILITY CLAUSE: The liability of the members is limited V. AUTHORIZED CAPITAL: The authorized share capital of the Company is Rs. 8,500,000,000 (Rupees Eight Billion Five Hundred Million) divided into 850,000,000 (Eight Hundred Fifty Million) ordinary shares of the nominal value of Rs.10.00 (Rupees ten) each with the rights, privileges, and conditions attached. Here to as are provided for the time being, with power to increase and reduce the capital of the Company and to divide the shares in the capital for the time being, into several classes.

Smelling: Its More Than Meets the Olfactory Epithelium :: Biology Essays Research Papers

Smelling: It's More Than Meets the Olfactory Epithelium The ability to take a chemical sample of the environment and interpret that sample has long been a skill of earth dwelling life forms. We don't tend to think of the sense of smell as a mechanism that analyzes physical specimens. It is sort of a repulsive notion, considering some of the undesirable substances we are forced to smell every day. But, just as we cannot feel a book without touching it, we cannot smell an orange without guiding some orange molecules up our noses. The capacity that humans divide into smell and taste has a single evolutionary precursor. This was a common chemical sense that enabled single-celled organisms to identify food and alert themselves to the presence of harmful substances. While it is among the oldest and most universal senses employed by living creatures, science has been slow to understand it. One roadblock to knowledge progression has been the inherent difficulty in experimenting with the chemical senses. Delivering precisely timed and quantitative ly accurate amounts of chemical stimuli to receptors is a technological challenge, but often necessary in the study of olfaction (1). While in many animals, the chemical senses play the most important role in perception and survival, in humans they are less involved in behavior than sight or hearing. This relative insignificance is another reason why olfaction has received scientific short shrift. It has been comparatively neglected by our culture as well--the English language does not include a sufficient vocabulary for describing odors. It is very difficult to verbally depict an odor to an individual who has never encountered it. Our understanding of smell is ever increasing, and while some big questions remain, others are continually being answered. The olfactory epithelium of each of the two nasal passages in humans is a 2.5 square centimeter patch containing about 50 million sensory receptor cells (3). The reception of the odorant and the beginning of sensory signal transduction occurs in the olfactory cilia, which are hair-like extensions of the receptor neurons (10-20 cilia per neuron). The neurons have a turn-over rate of about 40 days (3). On the opposite side of the cilia, within the epithelium, the neurons form axons which penetrate the cribiform bone in bundles and synapse with neurons in the olfactory bulb (2). Via the olfactory tract, (cranial nerve I), olfactory information travels to the primary olfactory cortex without first passing through the thalamus.

The Narcolepsy Sleeping Disorder

Narcolepsy is a chronic sleeping disorder with no sure cause. The main characteristic is excessive and over daytime sleepiness, even after a good nights rest. A person with narcolepsy will usually be very drowsy or fall asleep, particularly at unappropriate times and places. Daytime attacks may or may not occur withouth any warning (This is a personal account of someone with Narcolepsy that i found on the Science News website) My problems started in the fall of 1954 when football practice began just before school started. I would be so exhausted after practice that I could barely make it ome. Upon doing so I would lay down on the floor and go to sleep. I knew that something was seriously wrong with me and there wasn't anyway that I could play football. The previous year I was a starter on the varsity team. The next ten years were very difficult for me. Doctor after doctor made diagnoses that were wrong. People around you think that you are lazy, sleep all the time, you have no interest in anything and worst of all, you begin to think you are worthless and lazy. During this ten years, I have had sleep attacks while driving a car. When I would awaken, I would have traveled 20 r 30 miles and not remember a thing. I have gone to sleep on my feet while working and standing still. I would go to the bathroom just to be able to close my eyes for a short period of time. I would use cigarettes as a timer. You can light a cigarette and slide it between your fingers down toward your palm, different lengths to adjust the time. When the cigarette burns down toward your fingers How I found out what was wrong with me! There was an article in a magazine which came with the Sunday paper. When I read the article, I immediately knew that i had found the answer to my problem. The next morning I went to the local Doctor and asked him if he had read the article. He responded that he had, but the symptoms would fit just about everyone in town. I told him he might be right, but how many people did he know have their knees buckle or lose control of their neck when they laughed, got mad, or were surprised. I asked if he would write a prescription for Ritalin. When I took my first pill of Ritalin, it was the first time I had felt any source of energy for over 10 years. I am now 61 years old and I am from a time when the workplace was very different from today. Management id not take the time, nor were they required to try to understand disabilities. If a company found out that you were a narcoleptic, they would terminate you, because they were afraid you would hurt someone else in the work place. I worked as a professional mechanic for 20 years and then worked in the gas industry on the retail level for another 22 years. I have not had an accident of any kind as a result of my narcolepsy. It seems as though subconsciously, I knew when I was in danger and would always wake up. My advice to anyone that has had a proper diagnosis as to their narcolepsy is the following. Get to know thy self, be aware and study what effects your behavior when this or that happens. Symptoms typically appear during adolescence, although the disease itself may not be diagnosed for many years afterward. The primary symptom is an overwhelming feeling of fatigue, together with sleep attacks that may occur with or without warning. About 75% of patients also experience cataplexy, a sudden loss of muscle tone lasting a few seconds to 30 minutes, but without loss of consciousness. Episodes of narcolepsy can be triggered by emotions such as laughter, fear, or anger. Other symptoms include sleep aralysis and hypnogogic hallucinations as the person wakes up or falls asleep. Some patients may also have trouble staying asleep at Recent research suggests that the cause of narcolepsy maybe involves a dead patch of cells in your brain, in dogs and mice they have found this patch of dead cells that they ahave verified causes narcolepsy to these animals. The exact cell pattern has not been identified in humans, and scientists say we may find the source in as close to 2 years with good research. Twin studies suggest that narcolepsy is not definately a genetic disease, since only 25% of the ime will both twins have the condition. The risk for a person whose immediate relative has narcolepsy is only about 1-2%. This baffles doctors because narcolepsy can show up out of nowhere, but also may run in the family, but not always. The treatment for narcolepsy usually involves taking medications to reduce sleepiness during the day and in those who have cataplexy, other medications to prevent cataplexy. The medications to prevent sleep during the day are a group of medicines called stimulants that includes Ritalin, Adderall, Dexedrine, Provigil and others. Cataplexy is usually treated with antidepressant edications that repress REM (dreaming) sleep such as Tofranil, Norpramin, Prozac, Paxil and Zoloft. Narcolepsy can be diagnosed easily when all the symptoms are present. Two tests are usually done to verify the diagnosis. These tests are usually done by a sleep doctor. The polysomnogram records your brain waves when you sleep in the night, and once you go into REM (Rapid Eye Movement) if the brain waves look the same then this helps in diagnosis. With the multiple latency test people are to do an activity they regularly do any other day and every 2 hours the doctors tell them if they feel drowsy that they should try o sleep etc. I have also read though that doctors usually wont diagnose narcolepsy easily, in many stories like the one above, people say that doctors said that they had anything but narcolepsy. Narcolepsy usually can show up as many things, doctors usually at at first call it a lack of sleep, and other times they may say that you I learned a lot from this report. Before I did this report I thought that narcolepsy was just always being tired and sometimes taking a nap during the day, but I was wrong. I think narcolepsy would be a very aggrevating and embarrasing disease.

Villanova admission essay

Basing my argument on my experience, I have come to appreciate the fact that, adaptive problem solving is a quality I have painstakingly assumed. I have being raised in a business oriented family; I have witnessed the benefits of a person being in the forefront of solving amicably arising and anticipated problems.This does not require of me to be always looking for some problems to solve here and there, rather I have found myself best suited to tack any forthcoming problem. Once a problem is solved, I always feel re-energized to put my efforts in the core areas of whatever I am doing at that particular time.Whenever a problem is too big to handle by myself, I always enlist the services of others in my field of work; thereby bringing the sense of togetherness.To avoid unnecessary problems, I always like playing by the rules. Honesty is a virtue that, at the end of the day, rewards handsomely. Mahatma Gandhi once said ’It’s difficult to conduct an honest business but itâ €™s not impossible’ that’s is why I try to keep on the straight and narrow even if   some situations, many a times demand otherwise.My father has taught me that a business found on the premise of lies may only stand but will never weather the slightest of the storm.A person of integrity is always a darling to many. My own mother has been approached by many big corporate firms to become a big shot because she has exhibited integrity in our family’s manufacturing firm.Turning these offers down, she always insists that she is happy where she is, and this further shows that she is a woman of principle and character. This has not only encourages me to be of integrity but also makes me see how it is a good thing to employ the principle of integrity through and through.All my school life, I have found myself excelling because I have been engaging my teachers and other stakeholders with intellectual questions. For I have developed a tendency of reading two to thre e chapters ahead of what the teacher is covering and on top of that reading widely, I have benefited much for I have been able to understand some of the connectedness of various aspect of what we cover in class and what happens in reality.It has been fairly easy for me to put into practical the theoretical parts of course work. This has further enabled me to understand the world better and how to make it better for other people and the generations to come.Problem solving, honesty, integrity, intellectual curiosity to mention but a few, are some of the traits that have contributed greatly in enabling me to establish an advertising company while still in school. I have been able to run this company and it broke even a while ago and I am making good money not to mention three employees I have employed permanently and many others on contract.As a member of the incoming business class, I feel encouraged to add some value to my course mates and the entire school community. In doing so, I will try to help any student with a problem, I come across though it will be a tall order; I will try my level best. In the same vein, I will encourage them to work as a team, because a problem shared is a problem half solved. Honesty and integrity are two intertwined aspects and it will be up to me to show the students that one does not need to wait until after school to become a person of integrity; rather the earlier the better.I will invite them to see the progress of my business whereby I will explain to them that it’s through honesty and integrity that I have taken the business that far. Concerning intellectual curiosity, I will continue engaging my teachers in constructive discussions and I am hoping that, those students who shy away from asking questions, will get both the clarification and the courage to ask questions.I will also lead other students to read widely and to relate what is learnt in classroom to what take place in the real world. This, I believe, will ma ke the learning environment more enjoyable to both the teachers and the students.

French American War essays

French American War essays Thousands of years ago many people believed in Ptolemys geocentric theory that the Earth was the center of the universe. But, not until around 1500 was that theory disproved by the heliocentric theory formed from a great astronomer named Copernicus. His theory proved that the sun is the center of the universe and that celestial objects revolution would orbit around the sun and not the Earth. The word revolution in this case meant an orbital motion around a point (superficial definition). But, it is because of the American Revolution and mainly the French Revolution that this word has been significantly altered. Revolutions had been given a new meaning, a meaning of reform, violent, and radical change in ones government. The French Revolution from 1789-1799 and the American Revolution from 1775-1783 have been two of the most talked about and historical revolutions. These two revolutions expressed a great impact around the world and have brought about great changes in their government. Many believe that these revolutions were very similar in the fact that both countries, France and America (13 colonies), wanted a better way of living and a new form of government. Although they were very much alike in that way as well as in other ways, people do not realize the many contrasts among them. Such differences were their reasons for change, they type of government that ruled over them, and the results of the revolutions. The French and American Revolutions were both wars fought for a change in government. The most important differences among the two was the reasons for a demanding change. The French wanted equality while the 13 English Colonies wanted independence from British rule. France was basically fighting a war against itself because of its feudalistic division of estates. The third estate, composed of peasants and its middle class (the Bourgeoisie), was very displeased and ...

25 Russian Words Used in English (and 25 More That Should Be)

25 Russian Words Used in English (and 25 More That Should Be) 25 Russian Words Used in English (and 25 More That Should Be) 25 Russian Words Used in English (and 25 More That Should Be) By Mark Nichol Many Russian words have been appropriated by the English language. Some, like mammoth and sable, are easily assumed to be from a more closely related language. Others were originally specific to Russian culture but can be applied to analogous Western concepts, such as a reference to an American politician retreating from Washington, DC, to his dacha, or to a comment about a troika of conspirators. Here is a list of well-known Russian words and their original meanings and later connotations, if any. Below that you’ll find another set, that one consisting of words known to few, if any, speakers of English who are not bilingual in Russian or familiar with Russian culture. The latter list is ripe for exploitation in English. (Try referring, for example, to an elite cohort as the nomenklatura or to a petty bureaucrat as a namestnik.) Either list can be mined for analogous meanings. Some require no annotation, while others should be introduced carefully in context or even glossed; which approach to take depends on the content and its audience. Familiar Russian Words (Absorbed into English) 1. Agitprop: artistic political propaganda, from a truncated form of the Russian forms of the words agitation and propaganda 2. Apparatchik: a Communist Party member and/or functionary, from the Russian form of the word apparatus 3. Babushka: in Russian, â€Å"old woman†; in English, a type of scarf commonly worn by babushkas 4. Beluga: a type of whale or sturgeon 5. Bolshevik: a revolutionary or radical, from name of the majority Communist faction in Tsarist Russia, ultimately from the Russian word for â€Å"majority† 6. Commissar: an official 7. Cossack: a Russian ethnic group associated in popular culture with military prowess and a nomadic society; the name, like the ethnic appellation Kazakh, derives from the Turkish word for â€Å"nomad† 8. Dacha: a country house 9. Duma: a legislative body 10. Glasnost: a policy of political openness and transparency, from the Russian word for â€Å"publicity† 11. Gulag: originally an acronym for a Soviet-era system of forced-labor camps; it now can refer to any repressive or coercive environment or situation 12. Intelligentsia: the intellectual elite of a society, from the English word intelligent 13. Kopeck: a Russian coin 14. Mammoth: a prehistoric mammal, and, by extension, a synonym for massive 15. Menshevik: the name of the minority Communist faction in Tsarist Russia, originally in power briefly after the Russian Revolution but defeated by the Bolsheviks 16. Perestroika: the Soviet-era system of reform, from the Russian word for â€Å"restructuring† 17. Pogrom: originally, violent persecution of Jews in Russia; now, any officially sanctioned attack on a particular group 18. Politburo: the Soviet-era primary source of government policy decisions, a truncation of the Russian forms of the words political and bureau 19. Ruble: the basic unit of Russian currency 20. Sable: a mammal related to the weasel whose sleek black coat was long prized as a clothing material, and, by extension, a synonym for black 21. Samizdat: prohibited literature produced clandestinely 22. Samovar: an urn for heating tea 23. Sputnik: a traveling companion; also, the name given to a series of Soviet-era satellites, the first objects launched into space 24. Taiga: the far northern coniferous forests of both Asia and North America, from a Turkish or Mongolian word 25. Troika: a carriage or sleigh pulled by three horses, or a triumvirate (a ruling or administrative trio) Unfamiliar Russian Words (Not Yet Absorbed into English) 26. Druzhina: a unit of bodyguards and elite troops 27. Glavlit: the Soviet-era government censorship agency 28. Izba: a log house 29. Knout: a whip used in punishment 30. Konyushy: an official responsible for horses used in ceremonies 31. Kulak: a well-off farmer 32. Lishenets: a disenfranchised group 33. Matryoshka: a set of Russian nesting dolls 34. Muzhik: a peasant 35. Namestnik: an administrator (from the Russian word for â€Å"deputy†) 36. Narkompros: a Soviet-era agency responsible for education and culture, later called the Ministry of Enlightening 37. Nomenklatura: the Soviet elite, holding prestigious government and industrial posts (from the Latin term nomenclature, â€Å"list of names†) 38. Okhrana: the Tsarist secret police 39: Oprichnik: Ivan the Terrible’s brutal bodyguards and henchmen 40. Prikaz: originally, a bureaucratic position; later, an administrative directive 41. Propiska: a Tsarist regulation requiring subjects to remain in their hometown 42. Rasputitsa: spring and fall periods in which, because of heavy snow or rain, unpaved roads are impassable (possibly related to the name of Rasputin) 43. Sambo: a form of martial arts 44. Silovik: the elite 45. Spetsnaz: special-forces soldiers 46. Tamizdat: prohibited literature produced outside the country 47. Tovarishch: a companion or fellow traveler; used as a direct form of address in the Soviet Union, equivalent to comrade 48. Ukase: a decree; refers specifically to a government proclamation or generically to an arbitrary command 49. Ushanka: a fur cap with ear flaps 50. Zek: an inmate Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Vocabulary category, check our popular posts, or choose a related post below:Grammar Test 1Running Amok or Running Amuck?How Long Should a Synopsis Be?

Increasing Technology and Its Impact on Children Essay

Increasing Technology and Its Impact on Children - Essay Example exposure to computing environments may lead to "individuals incapable of dealing with the messiness of reality, the needs of community building, and the demands of personal commitments" (Behrman, 2000). Moreover, exposure to violent computer games are associated with increased aggressive behavior (Subrahmanyam et al, 2000). Excessive, unmonitored use of computers can place children at risk on their physical, social, and psychological development, and expose them to inappropriate violent, sexual, as well as commercial content (Behrman, 2000). Cellphones. Another gadget that would give probable negative effects of technology on children is the cell phone. An important report linked heavy use of mobile phones to ear and brain tumours and concluded that risks had been underestimated by most scientists (Coates, Hawkes & Blair, 2005). William Stewart, chairman of the National Radiological Protection Board of United Kingdom said that children are at greater risk of harm when using their mobile phones. Recommending that children under the age of eight not use mobile phones, Stewart's report on Mobile Phones and Health discussed four studies that are of public interest. One of these was a ten-year Sweden study that advised that heavy mobile users are more prone to non-malignant tumors in the ear and brain; whereas a Dutch study had suggested changes in cognitive function. A project supported by the EU had shown evidence of cell damage from fields typical of those of mobile phones, whereas the German study has hinted at an increase in cancer around base stations (Coates et al., 2005). On the other hand, William Thomas (2003) wrote that cell phones harm children even worse than adults. Thomas bared the new findings by the Spanish Neuro Diagnostic Research Institute. He quoted... This report approves that the age of the child and his or her developmental stage must be taken into account when considering computer use. The same can be said with the ubiquitous cell phone and iPod. Accordingly, for very young children the answers to these questions are usually "no" as their use for most children under age three does not have meaning for the child. To reduce such risks, it is proposed that children's time of use on these technologies be limited and their exposure to different types of content should be supervised. Technology has its bad side. In children's interactions with parents and other adult authority figures, the traditional parent–child relationship is reversed, with the computer-savvy child becoming teacher to the parent, eroding authority structures, and resulting in children as less accepting of parental authority. Children learn to form "electronic friendships" with computers instead of friendships with their peers and this might hinder them in developing their interpersonal skills. The Alliance for Childhood thinks technology is not helpful but doing the opposite - worsening academic performance and increasing drop-out rates. As these studies have shown, when used appropriately, technology can support and extend learning in valuable ways and can increase educational opportunities for children and fulfill their communication needs. The key is just in finding the balance, knowing how to coordinate the components of a healthy childhood with the unequalled potentialities offered by technology.