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Free research papers and essays on topics related to: preservative

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  • Allergies - 1,744 words
    Allergies An allergy is an abnormal reaction to ordinarily harmless substance or substances. These sensitizing substances, called allergens, may be inhaled, swallowed or come into contact with the skin. When an allergen is absorbed into the body it triggers white blood cells to produce IgE antibodies. These antibodies attach themselves to mast cells causing release of potent chemical mediators such as histamine, causing typical allergic symptoms. A person who has allergies doesnt have a poor immune system, rather an over protective one. Their immune system fights the allergen when it comes in contact with it even though the allergen isnt harmful. To diagnose allergies a physician will clean ...
    Related: high blood pressure, blood sugar, weight gain, sensitive, remove
  • Contact Lens Complications - 1,337 words
    Contact Lens Complications Introduction The last 20 years has seen a tremendous increase in the use of contact lenses. Despite the recent trend towards fashionable eyewear and the advances in refractive surgeries, there are still approximately 1 million Australians who are currently wearing contact lenses. This is partly because of the variety of lens materials, replacement schedules, specialty designs, and convenient contact lens care systems available today. While there are many benefits of contact lenses, both cosmetic and therapeutic, contact lens wear is not without risk of complications. Ocular complications of contact lenses include iatrogenic (inappropriate fit, prescription or weari ...
    Related: lens, potential problems, good idea, segment, remove
  • Contact Lens Complications - 1,350 words
    ... bility of an allergy developing to the lens material, deposits on the lens, or to solutions used with the lens. The conjunctiva is a thin membrane that lines the white surface of the eye and the inside of the eyelids. Soft lenses usually extend somewhat onto the conjunctiva outside of the cornea. The inside of the eyelids is also in contact with lenses especially during blinking. The conjunctiva contains cells that can rapidly respond to allergens, leading to redness, itching, tearing or discharge, and a general inability to wear a contact lens. A common source of allergy is a preservative found in the contact lens solutions. Thimerasol was used frequently as a preservative in the past, ...
    Related: lens, problems associated, more prone, pollen, extend
  • Current Status Of Malaria Vaccinology - 1,071 words
    ... est were not a huge success they do show that a CTL inducing vaccine may be the road to take in looking for an effective malaria vaccine. There is now accumulating evidence that CTL may be protective against malaria and that levels of these cells are low in naturally infected people. This evidence suggests that malaria may be an attractive target for a new generation of CTL inducing vaccines. The next candidate vaccine that caught my attention was one which I read about in Vaccine vol 12 1994. This was a study of the safety, immunogenicity and limited efficacy of a recombinant Plasmodium falciparium circumsporozoite vaccine. The study was carried out in the early nineties using healthy m ...
    Related: current status, malaria, immune system, early stages, consisted
  • Embalming Essay - 587 words
    Embalming Essay Embalming Embalming is a mortuary custom, the art of preserving bodies after death, generally by the use of chemical substances. It is believed to have originated among the Egyptians, probably before 4000 BC, and was used by them for more than 30 centuries. Much evidence demonstrates that embalming is religious in origin, conceived as a means of preparing the dead for the life after death. From the Egyptians, the practice of embalming spread to other ancient peoples, including the Assyrians, Jews, Persians, and Scythians. Ancient embalming methods consisted of removal of the brains and viscera, and the filling of bodily cavities with a mixture of balsamic herbs and other subs ...
    Related: embalming, alexander the great, american civil, civil war, soft
  • Hinduism - 1,665 words
    Hinduism hinduism The term Hinduism refers to the civilization of the Hindus (originally, the inhabitants of the land of the Indus River). Introduced in about 1830 by British writers, it properly denotes the Indian civilization of approximately the last 2,000 years, which evolved from Vedism the religion of the Indo-European peoples who settled in India in the last centuries of the 2nd millennium BC. The spectrum that ranges from the level of popular Hindu belief to that of elaborate ritual technique and philosophical speculation is very broad and is attended by many stages of transition and varieties of coexistence. Magic rites, animal worship, and belief in demons are often combined with t ...
    Related: hinduism, hindu religion, indian society, hindu gods, indus
  • Nietzsche Vs Hobbes - 1,011 words
    Nietzsche Vs. Hobbes ANDREW LANGILLE GRADE 13 PHILOSOPHY COURSE, How are the philosophies of Nietzsche and Hobbes different on topics of Christianity, Human Nature, and Morality. The philosophies of Nietzsche and Hobbes are radically different, Hobbes philosophy is dominated by loyalty to the crown, riddled with references to the Christian scriptures, and a belief that life is nasty, brutish, and short(Leviathan, 133); while Nietzsches philosophy was dominated by the pessimistic Schopenhauer, a belief that the human race was a herd, and that God is dead(Thus Spoke Zarathustra, S. 13). Hobbes and Nietzsche look at the world completely differently. Hobbes was a Christian who defended the bible ...
    Related: hobbes, nietzsche, thomas hobbes, human race, royal family
  • Organic Chemistry - 1,197 words
    Organic Chemistry Organic compounds are covalently bonded compounds containing carbon, excluding carbonates and oxides. Carbon atoms are unique because of their ability to bond by catenation, which is forming long chains and rings from the covalent binding of an element to itself. Besides bonding with itself, carbon atoms are able to bind to elements with similar electronegativities. Organic compounds consist of carbon and these other elements. Hydrocarbons are the simplest organic compounds, composed of only carbon and hydrogen. Saturated hydrocarbons are hydrocarbons in which each carbon atom in the molecule forms four single covalent bonds with other atoms. Hydrocarbons that contain only ...
    Related: chemistry, organic, organic chemistry, food additives, physiological effects
  • Preserving And Preservatives - 754 words
    Preserving And Preservatives Preserving is a means of storing, food both "raw" and cooked for a future date. When you preserve you are following centuries of an old tradition of "putting food by". In order to do this, you have to seal the food in an airtight container and process it in such a way that the four main spoliers- enymes, molds, yeast, and bacteria are removed and your food is safe to eat. Preservatives are something used to preserve food. Natural or chemical substances are added to food to inhibit spoilage; also, to protect food from decay or fermentation. Three things that will prevent the growth or slow down the growth of these spoilers: heat, cold and the use of acidity in the ...
    Related: preserving, ancient times, washington carver, higher level, michael
  • The Chemistry Of Photography - 965 words
    The Chemistry Of Photography Photography is a very complex form of art, which uses standard chemicals and scientific equations. It is a chemical reaction, which occurs when light hits a film or paper emulsion. An emulsion is part of the film or paper, which is very sensitive to light. This is also the part where the chemical reaction takes place. In an emulsion, are small crystals of silver halide, silver bromide, silver chloride, or silver iodide [Eaton, George]. These chemical crystals react with light when it is passed through a camera, to create an image on paper [Foto Info]. The development of film production has a very simple chemical equation, most widely known as: Light + Ag(X) Ag + ...
    Related: chemistry, photography, online accessed, eastman kodak, eastman
  • The Conquest Of New Spain - 1,198 words
    The Conquest Of New Spain Corts came not to the New World to conquer by force, but by manipulation. Bernal Daz del Castillo, in the "Conquest of New Spain," describes how Corts and his soldiers manipulated the Aztec people and their king Montezuma from the time they traveled from Iztapalaopa to the time when Montezuma took Corts to the top of the great Cue and showed him the whole of Mexico and its countryside, and the three causeways which led into Mexico. Castillo's purpose for recording the mission was to keep an account of the wealth of Montezuma and Mexico, the traditions, and the economic potential that could benefit Corts' upcoming conquest. However, through these recordings, we are a ...
    Related: conquest, new spain, spain, slave trade, world history
  • Vegan - 1,342 words
    ... valid importance in learning anatomy. But they are wrong, dissection is murder. All different kinds of animals such as cats, frogs, and pigs are either raised, stolen, or caught in their own habitat, this unbelievable amount of deaths often leads to a large decrease in the population of a particular species. Since the intent is to kill a large number of specimens as fast as possible, they are all shoved together into small containers and gassed to death. Some of the animals do not die immediately, but the animals die when they are injected with the preservative formaldehyde, this causes an intense burning sensation. Dissection is not necessary to learn anatomy, there are alternatives to ...
    Related: vegan, american public, dairy products, animal cruelty, television
  • Woolly Mammoth - 1,717 words
    Woolly Mammoth Woolly Mammoths Remains: Catastrophic Origins? By Sue Bishop Since Ted Holden has repeatedly insisted that the mammoth whose remains were found in Siberia in 1901 was preserved by some great catastrophe as described in Velikovsky's books, I decided to research the topic. I found several books on the subject, including the original book written by one of the scientists who actually examined, preserved and transported the mammoth remains from Siberia. Preservation of the mammoth remains was somewhat different than has been imagined by the uninformed. The mammoths were 'mummified', a process that is quite easily done in a cold environment. Guthrie compares it to the process that ...
    Related: skeletal remains, chicago press, harvard university, geological, sudden
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