The Polio Vaccine Essay - 1082 Words

The Polio Vaccine The discovery of the polio vaccine was an important medical and scientific breakthrough because it saved many lives since the 1950s. In the summer of 1916 the great polio epidemic struck the United states. By the 1950s hundreds of thousands of people had been struck by the poliomyelitis. The highest number of cases occurred in 1953 with over 50,000 people infected with the virus. When hygienic conditions were poor polio attacked infants. The disease was spread by contaminated water and contact with fecal contamination. Many infants died when the conditions were poor. But as conditions improved the virus spread differently. It was spread more through playmates and family members, the contamination came from the†¦show more content†¦Dean William McEllroy talked Salk into joining the university full-time. Though the schools research budget was a grant from the American Society for the Study of High Blood Pressure in the amount of $1,800, he saw the opportunity to do two things. One was to continue the work he was doing on influenza, second was to begin working with the polio virus. A few months after arriving in Pittsburgh, Salk was visited by the director of research at the National Foundation for Infantile Paralysis. The director asked Salk if he would be willing to participate in a polio typing program. I had no experience working with polio, but it provided me with an opportunity. . . Salk said in an interview. This gave Salk a chance to get funding, equipment, a laboratory facility, and to hire a staff to work for and with him. Salks previous work gave him the idea that a killed virus could in fact work when others thought it couldnt. To type the polio virus Salk infected monkeys with polio by injecting it into them or feeding it to them. If a monkey survived it built up antibodies to protect against the virus. The monkeys that survived were then given another type of virus to see if the same antibodies protected against the second type. If it did, i t told Salk and his assistants that the two types were related. If it did not, that told Salk that they were not related. EventuallyShow MoreRelatedPolio Vaccine in America1048 Words   |  5 PagesThe Polio Vaccine in America When my daughter was a baby, and we decided to delay vaccination, a friend of my mother-in-law seemed thrilled with our decision. However, she advised to look into the polio vaccine because there wasn t much they could do if someone did contract polio. During my research, I have found that the polio vaccine is all but completely  unnecessary for anyone in the United States. Let s take a look at some of the most interesting information I have found. Taken directlyRead MoreThe Discovery Of The Polio Vaccine1963 Words   |  8 Pagesdiscovery of the Polio vaccine will be discussed and broken down into deeper thought on why and how it was discovered. Poliomyelitis is an infectious disease that reached epidemic levels in the mid twentieth century. People that were unfortunate to receive this disease faced hardships including fevers, sore throat and vomiting(Allaby). These are just symptoms but Polio can be a vicious disease leaving their patients paralyzed. The majority of people who are diagnosed with Polio don’t get paralyzedRead MoreThe Discovery Of Polio Vaccine Essay2213 Words   |  9 Pagespoliomyelitis, otherwise known as polio. However, a breakthrough was reached when Jonas Salk managed to developed the first vaccine, which he brought to the public in 1955 after testing the drug on himself, family, and others. Salk developed a killed-virus vaccine through tissue-culture methods discovered by the scientist John Ende rs. Unfortunately, Salk’s vaccine was not the cure that the scientific community, and the world, had hoped for, as the results of the vaccine took a critical turn for the worseRead MoreEssay on Polio Vaccine633 Words   |  3 PagesPoliomyelitis (shortened to polio) has been around for thousands of years, and there is still no cure, but at the peak of its devastation in the United States, Dr. Jonas Salk introduced a way to prevent it. Polio attacks the nerve cells and sometimes the central nervous system, causing muscle wasting, paralysis, and even death. The disease, whose symptoms are flu like, stuck mostly children, and in the first half of the 20th century the epidemics of polio were becoming more devastating. SalkRead MorePolio Vaccine : An Infectious Disease1028 Words   |  5 Pagesâ€Å"A 1916 Polio epidemic in the United States killed 6,000 people and paralyzed 27,000 more† (â€Å"Polio Vaccine†). This lead to the creation of the polio vaccine that has helped to prevent polio for a very long time. The IPV and OPV vaccines played a huge role in all of this. Jonas Salk, who created the IPV vaccine and Albert Sabin, who created the OPV vaccine saved millions of people all around the world from polio (Petersen, Jennifer B). The IPV and OPV polio vaccine helped eliminate polio from theRead MoreThe Polio Vaccine Through The Eyes Of Its Creator1218 Words   |  5 Pagescreation of the polio vaccine through the eyes of its creator. Salk also describes his childhood and the events that lead up to his medical breakthrough. Latour, Bruno , Steve Woolgar, and Jonas Salk. Introduction. Laboratory Life. 1986.Reprint. Princeton: Princeton University Press, 1986. 11. Print. It showed the way that Jonas Salk studied polio and how he came to the conclusion that the vaccine was correct. He also taught that it is a life taking job and that polio vaccine was a difficultRead MoreThe Erradication of Poliomyelitis: Inactivated Polio Vaccine (IPV), and Oral Polio Vaccine (OPV)1076 Words   |  5 PagesIntroduction Poliomyelitis, commonly known as â€Å"Polio†, is an acute motor disease caused by the poliovirus that targets the anterior horn cells of the human spinal cord, and in severe cases results in acute flaccid paralysis (Alberta Health and Wellness, 2011), which can progress to permanent paralysis. It mainly affects children under the age of five, although individuals of any age may contract it (World Health Organization, 2013 [C]). Historical outbreaks, most prominently the 1916 and 1952 epidemicsRead MoreThe Relationship between the Polio Vaccine and AIDS in Africa550 Words   |  2 PagesIn the late 1950s, several groups of researches and scientists were developing some vaccines against polio. At that time, polio was still an epidemic worldwide disease. One of these vaccines, made by Dr. Hilary Koprowski MD (1916-2013) was used to test it on millions of people in Africa, after first being trailed in the USA. The vaccine virus was grown in tissue cultures taken from macaque mon keys before being introduced to millions of people , who were largely living in Burundi, Rwanda, and CongoRead MoreJonas Salk and the Polio Vaccine Essay example554 Words   |  3 Pagesand virologist who developed the first safe and effective polio vaccine. Before this vaccine was created, polio vaccines usually contained live, weakened forms of the virus, but Salk developed a vaccine that contained an inactivated, dead form of polio, the first of its kind. Until the Salk vaccine was introduced on April 12, 1955, polio was considered the most frightening health problem in the United Sates. Just 3 years before the vaccine was released, almost 58,000 cases were reported, with 3,145Read MorePrevention Of The Polio Vaccine880 Words   |  4 Pagesimmunizations, such as: Dtap, Polio, Hep A, and Varicella. Dtap and Polio is part of Maxe’s primary immunization. First, I would ask mom if she would like her son to receive 4 mentioned above vaccines (consent needed). If mom agreed to vaccination, I would verify if her son didn’t have any of the following symptoms after receiving last Dtap: a brain or nervous system disease within 7 days, non-stop crying for 3h or more, a seizure or collapse, and fever over 105F. For the Polio vaccine I would verify if Max

The Grapes of Wrath an Analysis of Rosasharn Essay examples

The Grapes of Wrath: An Analysis of Rose of Sharon Some people grow up naturally, stage by stage. Other people stay immature longer and are forced to grow up rapidly because of the situations that come upon them. In John Steinbeck’s Dust Bowl epic The Grapes of Wrath, the figure perfectly representing this is Rose of Sharon. At the beginning of the novel, Rose of Sharon (or Rosasharn as she is called by the rest of the Joad family) is the eldest daughter of the Joad family, and is dreamy and self centered, blissfully unaware of anything other than her own happiness and contentment. She is expecting a child with Connie Rivers, who announces big plans to study electronics at night in hopes of giving his family a better life than that†¦show more content†¦This causes her to become reserved and silent, obviously mortified by Connie’s betrayal and abandonment. While at Weedpatch, a government camp, Rosasharn meets Mrs. Sandry, a religious fanatic that warns her about the dangers of dancing, singing, and play acting that go on at the camp. She succeeds in frightening Rose of Sharon by stating that the babies of these â€Å"sinners† are born â€Å"dead and bloody† (310). After the woman leaves, Rosasharn is reduced to tears as she is convinced her baby will be born dead as Mrs. Sandry said and she once again mourns Connie’s abandonment. When Ma discovers her, she manages to get her out of her depression a bit by saying, â€Å"You’re jest one person. An’ they’s a lot of other folks† (300). What Ma is trying to say in the novel is â€Å"Your opinion of yourself is what matters, because everyone else is going to judge you, but only you can accept the judgment.† In the last chapter of the book, the family finds shelter from a storm in an old barn, where they find an old man dying of starvation and his young son beside him. Ma exchanges a look of meaning with Rosasharn, and she knows that Rosasharn understands what she must do. To save the old man from death, Rosasharn does something both brave and selfless, and has the old man suckles the milk that would have otherwise gone to her dead baby. This is where Rose of Sharon truly grows up, for when one is in need she is able to put others before herself and give life to someone inShow MoreRelatedAnalysis Of John Steinbeck s Of Mice And Men 2778 Words   |  12 PagesSteinbeck almost always incorporates a sense of community in his novels with the intent to create a situation needing for a community to co-operate with one another to overcome obstacles and to make the struggle of everyday life bearable. In The Grapes of Wrath, Steinbeck creates a family with strengths and weaknesses. As critic Walker-Bickett writes â€Å"Ultimately, it is kindness, the family’s greatest strength† which proves to be the Joads’ salvation . The Joads are an Oklahoman family who have lost everything;Read MoreGrapes of Wrath5357 Words   |  22 PagesKrystal Giffen The Grapes of Wrath Part 1: Literary Analysis 1. A. â€Å"†¦Ã¢â‚¬ËœWhat’s this call, this sperit?’ An’ I says, ‘It’s love†¦Ã¢â‚¬  (page 23, Chapter 4). This quote is an example of an metaphor. The use of this metaphor was to show the reader why the preacher doesn’t preach anymore. The effect the metaphor had on the reader was, for them to see how the preacher really viewed ‘the sperit’. B. â€Å"One cat’ takes and shoves ten families out. Cat’s all over hell now†¦Ã¢â‚¬  (pg. 8, Chapter 2). This quote is

Titration Free Essays

Determination of the Percent Acetic Acid in Vinegar Objectives: (1) To introduce and use the concept of solution geochemistry (2) To specifically use solution geochemistry to determine the percent of acetic acid in vinegar. (3) To prepare a standard solution by the method of titration. Consider the following balanced chemical equations: IPPP + + OH (2) (4) (5) HCI + Noah HASPS + Noah CLC + – HASPS + – Niacin + HO Nassau + OHO acacia + OHO cases + OHO These reactions in water have one feature in common: a hydrogen ion from one impound reacts with a hydroxide ion from the other compound to form water. We will write a custom essay sample on Titration or any similar topic only for you Order Now The compound furnishing the hydrogen ion is called an acid and the one furnishing the hydroxide ion is called a base. The metal ion (the action) of the base and the anion of the acid combine to form a salt. In this context, salt is essentially synonymous with ionic compound. Reactions such as these are called acid-base reactions. The concepts of solution reactions and geochemistry in this experiment are applicable to any chemical reaction taking place in solution, not Just the acid base reactions indicated here. Geochemistry is the area of chemistry that deals with how much of one compound reacts with another. When compounds are mixed in amounts such that these amounts Just exactly react and none of any reactant is in excess (they are all the limiting reagent), this mixture is said to be a psychometric mixture or that psychometric amounts have been mixed. Observation of the above balanced equations indicates that symptomatically reaction occurs so that the total number of hydrogen ions available in the amount of acid reacting is the same as the total number of hydroxide ions available in the amount of base reacting. Thus in reaction 2) above, one mole (or one molecule) of HASPS (sulfuric acid) can furnish the same number of hydrogen as the number of hydroxides that two mole (or two molecules) of Noah can furnish. Therefore one mole of HASPS reacts with 2 moles of Noah (or one molecule of HASPS reacts with two molecules of Noah). This type of geochemistry information is obtained from any balanced chemical equation. In a solution the militarily, M, is the number of moles of solute in a liter of solution. Thus where n is the number of moles and V the volume in liters. By equation (6), the number of moles of solute in V liters of a solution of militarily M is Suppose one takes 34. 56 ml off 0. 13 M solution of sulfuric acid (HASPS). If one has a certain volume of sulfuric acid solution, there is one volume of a given Noah solution needed such that equivalent amounts of the two reactants are mixed. Equivalent amounts are the amounts that symptomatically react (that is, none of either reactant is left over). When the amount of Noah (in solution or otherwise) needed for psychometric reaction has been added, this is called the equivalence point. In the laboratory, the determination of the volume (the amount) of Noah required to exact symptomatically with the sulfuric acid solution is done by a procedure called titration. A burette is used to measure an accurate volume of the sulfuric acid solution into a flask. A few drops of an indicator is added and another burette is used to add the Noah solution to the sulfuric acid solution until there is a visual change in color of the solution (due to the indicator). There is a visual change in color in the solution caused by the indicator, a substance that changes color as close as possible to the point when the psychometric amount of Noah (in this case) has been added. When the solution changes color (the indicator changes color) this is called the endpoint of the titration. The solution should be colorless and change to a pink color (for the phenolphthalein indicator used here) upon the addition of one drop of Noah iterant. The indicator phenolphthalein is pink in basic solutions and colorless in acid solutions. The solution for the titration of sulfuric acid with Noah changes from acidic (indicator colorless) to basic (indicator pink) at the endpoint. At the endpoint the solution is slightly basic when the iterant is a base. Other indicators have a different color change but work the same in principle. The endpoint and the equivalence point should be as nearly the same as possible. In general for a sample of an acid which has z acid hydrogen titrated with Noah, the equation using normality, CEQ 38, is unchanged but CEQ 39 becomes CEQ 40 (40) % acid = (1 of For a sample of an acid with acid acid hydrogen titrated with a base with Sybase hydroxide ions, the percent of the acid in the sample is given by (41) (Sybase/acid)(Numb)(mom of Titration are usually used to determine the amount of a substance in a sample of a old or in a solution by determining the volume of iterant that is needed to react with the desired compound. In order to do this, the militarily and/or normality of the iterant solution must be accurately known and the chemical reaction between them must be known. This concepts and calculations above are not restricted to acid/base reactions and can be used for other types of chemical reactions. The definition of gram equivalent weight may change, however, to keep the requirement that one equivalent react with one equivalent. See the appendix to Experiment 9 for more illustration of this. If one considers the operations above, it will become clear why solutions are used in the laboratory. It would be difficult without using solutions to effect the reaction of the sodium hydroxide (a solid) with the vinegar sample (a liquid) and make accurate measurements in regard to how much sodium hydroxide would be required to react with a given sample of the vinegar. Using solutions makes the process much easier and convenient and is one of the reasons chemists use solutions. It does, however, require that one learn about solution concentrations and how they can relate to reaction geochemistry. In CEQ 32, note that in reaction only one of the four hydrogen in acetic acid reacts with the Noah to give a salt and water. Not all the hydrogen in compounds will react with the hydroxide of Noah to form water. Those that will are called acid hydrogen and the acid hydrogen are written first in the formula for a compound. Thus the formula for acetic acid is HACHURE indicating that it has one acid hydrogen. The determination of which and how many of the hydrogen are acid hydrogen in a compound must be done experimentally but once this is done, the formula is written so as to indicate this. How to cite Titration, Papers