The effect of different factors on egg white Essay Example for Free

The effect of different factors on egg white Essay As the title suggests I am going to investigate the effect of various factors in egg white. And as all of us know that egg meals are rich in proteins and that why we feed them to small children. But not all the parts of the egg have the same amount of proteins in them and as we know that there is the yellow part which has fairly less amount of protein compared to the white part and that is why I chose the white part to test the effect various external factors on the protein which it contains and it is called albumen. And to understand what I am going to do in my coursework I am going first to give a small explanation on the nature of the proteins and their structure in general and albumen in special. Proteins are in general made of small particles called amino acids. And this is achieved by when many amino acids combine together to form polypeptides in a condensation reaction. Those polypeptides join together also by a condensation reaction to form a protein. And this is in short how albumen is also formed. And thus we could say that amino acids are the basic units from which proteins are formed of and below is a structure of an amino acid. R H O N C C H H OH As we see above this is a simplified structure of an amino acid and from the diagram we could see that structure has in its center a carbon atom which is called the alpha carbon and to this alpha carbon there are four different groups attached to it and they are as follow. The first one is a hydrogen atom the second is a basic amino group and the third is the carboxyl group (COOH) which is usually acidic in most cases and in the end the fourth group is the R group which is variable in length and plays an important role in determining and deciding the nature of the amino acid. Therefore any amino acid, which has in its place a carboxyl group, which is an additional one would be an acidic one and if in its place it has an additional amino group it, would be a basic. That was in summary a brief explanation of the structure of an amino acid but for each structure should be held by bonds which keep them in shape and in my experiment I am going investigate how the effect various factors like acids and alkalis have on maintaining those bonds and that why we should take a look on the bonds holding the structure of amino acids. The bonds holding the amino acids are hydrogen bonds, which are founded between CO and NH groups. The second type is the ionic bonds, which occurs when the R group exits in an ionic form. The third type is the disulphide bond, which occurs between the sulphur groups of the amino acid cytosine. The last type is the hydrophobic bond and which is the most important in maintaining the structure of a protein and that is because the exclude water molecules in an aqueous environment. Moreover there are two types of proteins one is the fibrous proteins and the other is the globular proteins which albumen belong to this group and the most important characteristics of this group are that they are soluble in water and its chains are folded to form spherical shapes as shown below. Now any change in the structure due to any external factors, which affect the protein, will cause a change in its shape leading the protein not to carry its proper function. This process is called denaturation. When this process occurs in the protein albumen the albumen reverse to become a fibrous protein causing a white insoluble curd to form called the coagulation of the albumen. For denaturation to occur there are several factors which helps it to happen and this what I am going to investigate. One of those factors and which we know since lower classes is heating. Heating causes the atoms within the protein to gain kinetic energy and breaking the bonds. Other factors are like adding acids, alkalis, heavy metals etc.. . Those chemicals combine with the COO groups in the protein leading to a change in the structure and the denaturation of the protein. Those chemicals also form coagulated albumen when added to albumen. After going through what I wrote above I came to a personal conclusion which I am going to make it as my hypothesis is that the amount of coagulated protein formed increases or proportional to the concentration of the chemicals used which are external factors and physical factors it was exposed to. Now after mentioning my hypothesis I am going now to test the truthfulness of this hypothesis I am going to carry out an experiment to prove it and below is how I am going to plan my experiment and what chemicals I am going to use and etc.. . And below is a graph, which shows what I mean: At the beginning when I decided to start my experiment I decided to investigate a physical factor along with using chemicals. And the physical factor I decided upon was freezing that is because we know the effect of heating so I was interested to observe what freezing would do to egg albumen. This was for the physical factor, for the chemicals I decided to observe the effect o f acids, alkalis and heavy metals and for the acids I decided to use hydrochloric acid (HCl) and for the alkali I decided to use sodium hydroxide (NaOH) and for the heavy metals I decided to use either mercury chloride or silver chloride depending on the availability. And for each chemical I decided to use three different concentrations for each and they are going to be . 0. 25M, 0. 5M, 0. 75M and 1M for the acid, alkali and the heavy metal. To carry out the experiment I got to use some materials and apparatus and below is a list of them followed by the use of each in brief: Silver chloride Each of the materials and apparatus above has specific uses as shown below: Beakers: are going to hold the whole amount of the egg white and acids, alkalis and the heavy metals. Test tubes: are going to be used to pour the contents together in it for the reaction to take place. Measuring cylinders: are going to be used to measure the contents of the chemicals I am going to use. Droppers: these are going to be used to adjust small amounts when I pour the chemicals in the measuring cylinders like taking on ml off. Test tube holders: are going to hold the test tubes used for the reaction. Lab stickers: are going to be used to label the test tubes to know which is which. Glass rod: are going to be used to stir the contents of the test tubes and skim off the amount of coagulated protein formed. Freezer: is going to be used to place in it the test tube, which is going to test the effect of freezing on egg albumen. Eggs: are of course going to be used to get from them the egg white or egg albumen for the experiment. Hydrochloric acid: it is what I chose from all the ranges of acids to test the effect of acid on egg albumen. Sodium hydroxide: it is what I chose from all the ranges of alkalis to test the effect of alkali on egg albumen. Silver chloride: it is the heavy metal, which I choose to test the effect of heavy metals on egg albumen. And that was in brief the use of each material and the purpose for what I am going to use them. The experimental procedure to be carried:Now I am going to explain how I am going to carry out my experiment. First of all I will get some eggs, separate the egg white from the yellow part of it, and pour them in a beaker. Then I am going to get 30 cmi of the acid for each concentration and pour them in four different beakers, which means that for 1 M I will get 30 cmi of it in a beaker and the same for the other three concentrations. I will then repeat the same procedure for the sodium hydroxide and the silver chloride. Then I will take a measuring cylinder and pour in it 10 cmi of egg white in it. Then I will take the acid and pour in it in another measuring cylinder also 10 cmi of it. After that I take the egg white, pour it in a test tube and above it the acid, and wait until the reaction finishes. The time for which the reaction to finish will depend on how many days would I leave it there fore I decided to leave the mixture of acid and egg white for four days to give it the maximum time for it to finish its reaction. After that I will measure the volume of coagulation formed for example if the coagulation formed was the full 20 cmi then I am going to give it a symbol which will be 5 and so on depending on the volume formed. This procedure, which I used for the acid, is going to be the same for the sodium hydroxide and the heavy metal used thus guarantying a fair test. Precautions to be taken: When carrying the experiment one should be careful and below is the list of the precautions I took:   Wearing gloves: this important because it would protect my hands in case the acid, alkali and the heavy metal I am going to use can fall on the and burn my hands.   Lab coat: same as above but for the protection of the rest of my body. Not breaking glass apparatus: so as not injure my hands by glass shards caused by the breaking of the glass thus I should be careful.   Electric points: as I am going to test the effect of freezing it would be normally that I am going to use a freezer that is why I got to check the electric points so as not to get an electric shock   Eye protection: I am going to wear eye goggles to protect my eyes in case a splash of acid reaches my eyes.   Protection against salmonella: as all of us know that the surface of the egg, which means the eggshell, contains the bacteria salmonella thus one should Take care to wipe the eggshell first before the experiment and to wash his hands thoroughly after finishing his experiment. Factors to be controlled: For a fair test to be carried there are various factors to be controlled to ensure that fair test to be carried and below are the list of factors that should be controlled:   Maintaining a constant temperature: to make sure that the experiment goes smoothly one should maintain a constant temperature preferably a room temperature and that is because it the temperature was raised the rate of reaction will change. To leave all the test tubes for the same time so as none of them will have an advantage on the other.   Same amount of egg white to be used in all as the same amount of acid, alkali and heavy metal to be same through out the whole experiment.   To ensure accuracy one should repeat each experiment at least twice and take the mean of the values recorded.   I will try to make the reaction go by itself and prevent shaking any of the test tubes to give a fair chance to all the other test tubes.

edgar allan poe Essay -- essays research papers

Edgar Allan Poe Edgar Allan Poe was born on January 19, 1809 in Boston, Massachusetts. He was the son of two poor touring actors, Elizabeth Arnold Poe and David Poe Jr. The Poes traveled around to many different theaters, playing many different roles. While his mother was a well-known actor, his father was not, and was usually drunk during performances. David Poe abandoned his family when Edgar was about two and the rest of the Poe family left for Richmond, Virginia. Edgar’s mother died of tuberculosis there in Richmond. Edgar was only three at the time but apparently he remembered the traumatizing event later in life. After his mother’s death, John and Frances Allan took Edgar in. John Allan was a wealthy merchant. Allan changed Edgar Poe’s name to Edgar Allan Poe when he was baptized but never legally adopted him. John Allan sent Poe to all the best schools. John Allan’s company went bankrupt and he thought his family would have to live an austere lifestyle. Fortune found the Allan’s in 1825 when John’s uncle died and left the family $200,000. John Allan could now afford to send Edgar to the University of Virginia. While there, Edgar began drinking and gambling. This is also where he began writing poems. In 1827, Poe left the University and went to Baltimore. He was hoping to publish the poems that he had written but nobody would buy them. Poe was without any income so he joined the Army. He gained the rank of sergeant major in just two years and wrote in his spare time....

Global Nursing Shortage and Impact on Health Care Environment

In recent years international health care organizations are more and more recognizing the impact of nursing shortages in every aspect of health care delivery. Many health care delivery systems are increasingly recognizing the threat recurrent shortages of registered nurses impose on the health care system (Krall & Prus, 1995). This trend has become increasingly apparent from about the mid 1980s through the present, with concerns over nursing shortages leading many health care specialists to explore â€Å"the dynamics of the nursing labor market using neoclassical labor market analysis† (Krall & Prus, 67). Using this approach many suggest that chronic nursing shortages in the global market result from depressed wages and excess demand, and that hospitals tend to command â€Å"monopsonistic power† when it comes to nursing management (Krall & Prus, 1995). Under this line of thinking hospitals have traditionally resulted to substituting less skilled nursing personnel in place of RN's when the need arises to cope with nursing shortages, potentially decreasing the quality of care afforded patients and customers of the hospitals. One thing is certain; the future of the modern global health care organization is uncertain in light of chronic labor shortages among qualified nursing staff (Epstein, 1999). Many health care organizations are seeking alternative methods to provide patients with the quality care they need despite nursing shortages. Many are resorting to more emphasis on preventive care while others are branching out into the community in an attempt to identify community resources that may promote more support for patients in the health care environment (Epstein, 1999). Heirich (1998) notes that it is vital that health care organizations rethink the health care delivery system in order to provide the innovation necessary to accommodate the rapidly changing world economy and global health care environment. Old formulas for funding health care no longer work; health care costs continue to rise. Many organizations are focusing on cost control, which may include budget shortfalls when it comes to compensating nursing staff. More and more however health care organizations are also realizing the need to focus on adequate compensation and attention to nurses and nursing shortages. New business and health coalitions are forming in major metropolitan areas to help control costs and also attract more qualified personnel, stimulating physicians and nurses as well as other providers to work together to improve service delivery in light of new health care challenges (Heirich, 1998). Future of Workforce Design and Organization As health care organizations are changing in response to chronic nursing shortages so too are organizations re-evaluating workforce designs and organizational development within the health care setting. More and more the emphasis within the health care community and organization has been creating more flat organizational structures and global enterprises that encourage cross collaboration or multi-disciplinary approaches to health care delivery (Heirich, 1998). Chronic labor shortages of nurses in the global workplace have encouraged healthcare organizations to adopt new strategies for attracting qualified personnel. In Britain for example, long standing labor shortages among nurses has resulted in dire efforts to recruit migrant nurses from other countries (McGann & Mortimer, 2004). Other organization's including the Illinois State Association are considering recognizing various grades of nurses, including nurses with twelve months vs. urses with twenty seven or more months of training, in an effort to provide more and lower cost nursing care for patients (McGann & Mortimer, 2004). Nursing workforce design is increasingly taking on an interdisciplinary and collaborative approach, with more nurses and health care staff trained in a diverse array of services (Clark & Drinka, 2000). More health care systems are developing teams that consist of a nurse, doctor, nurse practitioner, social worker and other community members that provide a mix of services to patients (Clark & Drinka, 2000). Such efforts may help relieve some of the burden associated with nursing shortages while still ensuring that patients are cared for and offered the highest quality services possible in the health care setting. Health care organizations are also working to involve nursing staff more in decision making processes in an attempt to increase job satisfaction and promote reduced turn over and greater loyalty among qualified staff, as many nursing shortages have been attributed to overworked nurses and lack of job satisfaction (Clark & Drinka, 2000). More and more workforces are designing systems that allow nurse practitioners to provide feedback and work in an environment that is more supportive even in light of chronic over scheduling or nursing shortages. Impact Nursing Shortage on Education and Training Educational facilities are increasingly realizing the need to cross train staff to work in a variety of settings to cope with nursing shortages. Additionally more and more educational institutions are promoting team building skills training to promote greater collaboration among nurses and among other health care professionals. The chronic global nursing shortage has affected the future of nursing education, encouraging more training program development with emphasis on training nurses in other skill areas including stress management to cope with increasing burdens associated with under staffing and increasing job demands (McGann & Mortimer, 2004). Mosley (1998) suggests that the health care delivery and training model is shifting to move from more individual patient care to care in an integrated environment or system that affords a continuum of services . In this environment accountability for the health and well being of patients moves from a single nurse or care provider to multiple members of the health care team. This wellness model is increasingly promoted in educational facilities where potential health care providers and nurse trainees are taught to include community organizations, family, physicians and individuals as part of the health care team working to promote the health and well being of patients. The new model for educating nurses includes more diversity training so nurses are capable of working with diverse patients from diverse backgrounds (Clark & Drinka, 2000). It also includes an interdisciplinary approach to training that cross-trains nurses and other health care staff members to work in various settings and under dynamic conditions. Despite these efforts chronic shortages still exist with regard to attracting and retaining competent staff. Many educational facilities are realizing decreased enrollment in nursing programs, in part because many perceive the field of nursing to be one that is over taxing (Clark & Drinka, 2000). Educators will have to work diligently at highlighting programs that provide potential nursing students with the skills necessary to face the new challenges associated with working in a global nursing environment.

Amplification Definition and Examples in Rhetoric

Amplification is a rhetorical term for all the ways that an argument, explanation, or description can be expanded and enriched. Also called rhetorical amplification. A natural virtue in an oral culture, amplification provides redundancy of information, ceremonial amplitude, and scope for a memorable syntax and diction (Richard Lanham, A Handlist of Rhetorical Terms, 1991). In The Arte of Rhetorique  (1553), Thomas Wilson (who regarded amplification as a method of the invention) emphasized the value of this strategy: Among all the figures of rhetoric, there is no one that helpeth forward an oration and beautifieth the same with such delightful ornaments as doth amplification. In both speech and writing, amplification tends to accentuate the importance of a topic and  induce an emotional response (pathos) in the  audience. Examples and Observations In amplification, writers repeat something theyve just said while adding more details and information to the original description. . .The main purpose of amplification is to focus the readers attention on an idea he or she might otherwise miss.(Brendan McGuigan, Rhetorical Devices: A Handbook and Activities for Student Writers. Prestwick House, 2007) One of the Biggest Trees in Pittsburgh A massive tree centuries old holds out against the odds here across from my mothers house, one of the biggest trees in Pittsburgh, anchored in a green tangle of weeds and bushes, trunk thick as a Buick, black as night after rain soaks its striated hide. Huge spread of its branches canopies the foot of the hill where the streets come together. Certain times of day in summer it shades my mothers front porch. If it ever tore loose from its moorings, it would crush her house like a sledgehammer. . . . (John Edgar Wideman, All Stories Are True. The Stories of John Edgar Wideman. Random House, 1996) Bill Bryson on Britains Landscapes In terms of natural wonders, you know, Britain is a pretty unspectacular place. It has no alpine peaks or broad rift valleys, no mighty gorges or thundering cataracts. It is built to really quite a modest scale. And yet with a few unassuming natural endowments, a great deal of time and an unfailing instinct for improvement, the makers of Britain created the most superlatively park-like landscapes, the most orderly cities, the handsomest provincial towns, the jauntiest seaside resorts, the stateliest homes, the most dreamily spired, cathedral-rich, castle-strewn, abbey-bedecked, folly-scattered, green-wooded, winding-laned, sheep-dotted, plumply hedgerowed, well-tended, sublimely decorated 50,318 square miles the world has ever known--almost none of it undertaken with aesthetics in mind, but all of it adding up to something that is, quite often, perfect. What an achievement that is. (Bill Bryson, The Road to Little Dribbling: More Notes From a Small Island. Doubleday, 2015)   Dickens on Newness Mr. and Mrs. Veneering were bran-new people in a bran-new house in a bran-new quarter of London. Everything about the Veneerings was spick and span new. All their furniture was new, all their friends were new, all their servants were new, their place was new, . . . their harness was new, their horses were new, their pictures were new, they themselves were new, they were as newly-married as was lawfully compatible with their having a bran-new baby, and if they had set up a great-grandfather, he would have come home in matting from Pantechnicon, without a scratch upon him, French-polished to the crown of his head. (Charles Dickens, Our Mutual Friend, 1864-65) More Light! Goethes final words: More light. Ever since we crawled out of that primordial slime, thats been our unifying cry: More light. Sunlight. Torchlight. Candlelight. Neon. Incandescent. Lights that banish the darkness from our caves, to illuminate our roads, the insides of our refrigerators. Big floods for the night games at Soldiers field. Little tiny flashlight for those books we read under the covers when were supposed to be asleep. Light is more than watts and footcandles. Light is metaphor. Thy word is a lamp unto my feet. Rage, rage against the dying of the light. Lead, Kindly Light, amid the encircling gloom, Lead Thou me on! The night is dark, and I am far from home--Lead Thou me on! Arise, shine, for thy light has come. Light is knowledge. Light is life. Light is light. (Chris Stevens, Northern Exposure, 1992) Henry Peacham on Amplification In The Garden of Eloquence  (1593), Henry  Peacham describes [the] effects [of amplification] in the following manner: It is full of light, plenty and variety causing the orator to teach and tell things plainly, to amplify largely, and to prove and conclude mightily. The very wording of this passage demonstrates the procedure of amplifying one term, amplification itself, and that with the purpose of catching the readers attention.(Thomas O. Sloane,  Encyclopedia of Rhetoric. Oxford University Press, 2001) Selective Amplification Judgment is to be exercised in deciding what thoughts require amplification and what do not. A greater degree of expansion is necessary in oral than in written discourse; and in popular works than in purely scientific. A brief exposition may be sufficient for those who have some acquaintance with the subject, while in addressing those of less intelligence a greater fullness of details is necessary. It is always a most serious fault to dwell on what is unimportant, trivial, or what can be supplied by the reader; it indicates a want of the power of just discrimination on the part of the writer. (Andrew D. Hepburn, Manual of English Rhetoric, 1875) The Lighter Side of Amplification: Blackadders Crisis This is a crisis. A large crisis. In fact, if youve got a moment, its a twelve-story crisis with a magnificent entrance hall, carpeting throughout, 24-hour portage, and an enormous sign on the roof, saying This Is a Large Crisis. A large crisis requires a large plan. Get me two pencils and a pair of underpants. (Rowan Atkinson as Captain Blackadder in Goodbyeee. Blackadder Goes Forth, 1989) Pronunciation: am-pli-fi-KAY-shun Etymology: From the Latin enlargement