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4,589 Essays on Science. Documents 121 - 150

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  • Acquired Immune Deficiency Syndrome

    Acquired Immune Deficiency Syndrome

    AIDS is Acquired Immune Deficiency Syndrome HIV and Aids affect more than roughly thirty million people worldwide. Race, sex and age have nothing to do with who can get this disease, however, the race with the highest number of infected people happens to be Caucasian males ages 25-44. About forty-five percent of the 641,000 AIDS cases in the U.S. have been white people. Blacks aren’t far behind with over 35 percent of cases, and Hispanics

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    Essay Length: 476 Words / 2 Pages
    Submitted: April 6, 2010 By: Fonta
  • Acquired Immune Deficiency Syndrome (aids)

    Acquired Immune Deficiency Syndrome (aids)

    Acquired Immune Deficiency Syndrome (AIDS) Acquire Immune Deficiency Syndrome, or AIDS, is a recently recognized disease. It is caused by infection with the human immunodeficiency virus, or HIV, which attacks selected cells in the immune system and produces defects in function. These defects may not be apparent for years; however, they may lead to a severe suppression of the immune system’s ability to resist harmful organisms. This leaves the body open to invasion by various

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    Essay Length: 920 Words / 4 Pages
    Submitted: December 21, 2009 By: Andrew
  • Acquired Immunodeficiency Syndrome

    Acquired Immunodeficiency Syndrome

    AIDS (Acquired Immunodeficiency Syndrome) is one of the worst pandemics the world has ever known. HIV (Human Immunodeficiency Virus), the virus that causes AIDS, was first discovered in 1981 and it has since swept across the globe, infecting millions in a relatively short period of time. AIDS has killed 28.1 million people that we know of, with 3 million people dying in the year 2002 alone. Clearly the AIDS pandemic has had, and will continue

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    Essay Length: 1,092 Words / 5 Pages
    Submitted: January 16, 2010 By: Tommy
  • Acquired Immunodeficiency Syndrome

    Acquired Immunodeficiency Syndrome

    Acquired immunodeficiency syndrome (AIDS) is a collection of symptoms and infections, caused by HIV, which damage the immune system. Aids is the most advanced stage of HIV. HIV gradually destroys the body’s power to fight infections and certain cancers; nearly every organ system is affected. People who have AIDS may develop life-threatening diseases from viruses or bacteria that rarely make healthy people sick. AIDS was first recognized in 1981 in New York City and was

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    Essay Length: 353 Words / 2 Pages
    Submitted: March 14, 2010 By: Anna
  • Acquired Immunodeficiency Syndrome

    Acquired Immunodeficiency Syndrome

    HIV/AIDS Today due to the advancements in medical industry many new drugs and treatment methods are available to combat the spread of Human Immunodeficiency Virus (HIV) and the consequent Acquired Immunodeficiency Syndrome (AIDS). But still this deadly disease poses many challenges for the health care systems and providers in every corner of the world. HIV is a virus that occurs only in humans causing deterioration of immune system due to Microscopic agents. It gradually hampers

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    Essay Length: 807 Words / 4 Pages
    Submitted: March 26, 2010 By: Mike
  • Acromegaly

    Acromegaly

    The foundations of the Endocrine System consist of hormones and glands. These glands are ductless and their secretions are sent through the bloodstream. Endocrine glands also control bodily metabolic activity. The major glands that make up the human endocrine system are the hypothalamus, pituitary, thyroid, parathyroids, adrenals, pineal body, the pancreas, and the reproductive glands, which include the ovaries and testes. The endocrine system has three basic functions, regulate metabolic functions of the body, regulate

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    Essay Length: 464 Words / 2 Pages
    Submitted: December 16, 2009 By: Max
  • Action Potential Propagation

    Action Potential Propagation

    Ions Involved in Action Potential Propagation Essay. Nerve and muscle functions involve electrical conduction. However, nerves and muscle are not like electrical wires. Nerve and muscle cells are poor conductors of classical electrical current flow; such current dies out within a few millimeters. Signal transport (Action Potentials), does travel from one end of a nerve to the other. There is no diminishment of the signal, independent of the length of the cell (unlike a wire),

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    Essay Length: 421 Words / 2 Pages
    Submitted: December 6, 2009 By: Anna
  • Action Potentials

    Action Potentials

    An action potential is initiated through a depolarization of the nerve fiber. Sodium permeable channels open allowing sodium to enter the membrane causing the surface of the membrane to become less negative. As the depolarization reaches and crosses the threshold, the action potential is triggered. Multiple action potentials can be generated with continuous depolarization. A nerve can be depolarized by stimulating it with an electrical current. The rate of action potential generation depends on the

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    Essay Length: 290 Words / 2 Pages
    Submitted: December 23, 2009 By: Venidikt
  • Acupuncture

    Acupuncture

    Acupuncture In the world that we live in now there are many types of medical treatment. One of the many is acupuncture. Acupuncture is a procedure used in or adapted from Chinese medical practice in which specific body areas are pierced with fine needles for therapeutic purposes or to relieve pain or produce regional anesthesia. Acupuncture has become part of medical world. Some people find it amazing how acupuncture can be so effective and some

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    Essay Length: 556 Words / 3 Pages
    Submitted: December 18, 2009 By: Tommy
  • Acupuncture

    Acupuncture

    Alternative, complementary, and integrative healing are all part of a well-debated but poorly researched area of medicine. Doctors of the conventional American and European medical communities have been long prone to dismiss unconventional healing methods such as acupuncture, herbal supplements, and massage therapy as ineffective or outright crackpot methods of treating illness. The view of the medical community, however, seems to have little impact of the growing popularity of CAM (complementary and alternative medicine) among

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    Essay Length: 1,125 Words / 5 Pages
    Submitted: February 21, 2010 By: Steve
  • Acupuncture

    Acupuncture

    Acupuncture was an ancient Chinese healing art that involves the insertion of needles into specific points of the body. It has a long history, and thus carries a huge culture component. In China, acupuncture is not merely seen as a medical treatment but rather a cultural heritage, a reflection of the intelligence of the Chinese civilization. People in China focus more on its culture content than on its clinical efficiency. In the U.S, because of

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    Essay Length: 738 Words / 3 Pages
    Submitted: May 1, 2011 By: chjasonwu
  • Acupunture

    Acupunture

    The traditional Chinese treatment of acupuncture is an affective alternative medicine that has been around for thousands of years. Acupuncture is one of the most researched and documented alternative medicines around (Acupuncture). Although a vast majority of people believe Western medicine is the only cure to sickness, many people benefit from acupuncture everyday. Most people disregard the ancient art all together without giving it a chance because are scared of the needles it involves. Also,

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    Essay Length: 1,607 Words / 7 Pages
    Submitted: November 24, 2009 By: Mike
  • Adam and God

    Adam and God

    God took some clay from the ground and made the shape of a man. Then He breathed gently into the shape. The man's eye's opened and he began to live. God called him Adam. The Lord made a beautiful garden for him to live in. The garden, called Eden, was full of many wonderful things. Beautiful flowers grew everywhere. Birds sang in the trees, streams flowed through the valley and animals roamed across the fields.

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    Essay Length: 670 Words / 3 Pages
    Submitted: February 21, 2017 By: ahmed30
  • Adaptation

    Adaptation

    Adaptation Adaptation is when an organism accommodates to sudden changes in its environment. It’s when it alterates its behavior or it’s body structure to make it more suitable for the new conditions. When an organism’s environment changes that organism must adjust to the changes or it will not survive for much longer. Without adaptation most organisms on Earth would be extinct. Adaptation starts when environmental conditions suddenly change in an organism’s environment. When this happens

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    Essay Length: 278 Words / 2 Pages
    Submitted: December 15, 2009 By: Monika
  • Adaptive Value of a Giraffe’s Neck

    Adaptive Value of a Giraffe’s Neck

    Adaptive value of a giraffe’s neck The Giraffe is an African even-toed ungulate mammal, the tallest of all land-living animal species. Most giraffes live either in East Africa or in Angola and Zambia in southwestern Africa (wikipedia). Until the middle of the 20th century giraffes were also commonly found in West Africa, south of the Sahara (San Diego). Males can grow to 16 to 18 feet tall, weigh up to 2000 pounds and have extremely

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    Essay Length: 540 Words / 3 Pages
    Submitted: June 14, 2010 By: Monika
  • Add and Ritalin

    Add and Ritalin

    ADD and Ritalin Attention Deficit Disorder (ADD) is a problem that affects 5% to 10% of all children. ADD affects more children than any other childhood problems except asthma. It is estimated to be the largest single cause for first referrals to child guidance clinics throughout the country, making up as many as 40% of those cases. Many ADD cases are not diagnosed because the problem most often does not show in the doctors office.

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    Essay Length: 2,496 Words / 10 Pages
    Submitted: January 1, 2010 By: Mike
  • Addf

    Addf

    Goodyear faces multiple issues regarding the launch of the Aquatred. I feel that pursuing the following strategies would make this a successful launch: Strategy for the Aquatred launch • Target Market Strategy: Goodyear should target value-oriented and quality buyers (Multi market strategy) for the Aquatred tire. Exhibit 7 shows that in these two segments Michelin is stronger than Goodyear and we can also see from Exhibit 8 that 44% of Michelin customers are loyal to

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    Essay Length: 254 Words / 2 Pages
    Submitted: January 28, 2010 By: Kevin
  • Addisons Disease

    Addisons Disease

    Addison’s Disease Rachel Phelps Addison's disease (also known as chronic adrenal insufficiency, hypocortisolism or hypocorticism) is a rare endocrine disorder in which the adrenal gland produces insufficient amounts of steroid hormones . It may develop in children as well as adults, and may occur as the result of a large number of underlying causes. The condition is named after Dr Thomas Addison, the British physician who first described the condition in his 1855 On the

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    Essay Length: 417 Words / 2 Pages
    Submitted: March 4, 2010 By: Mikki
  • Addison’s Disease

    Addison’s Disease

    Addison’s disease Addison’s disease is a disorder of the endocrine system. It is a hormonal disorder that can strike anyone, any gender at any age. Addison’s disease has also been called Adrenal Insufficiency (hypocortisolism) because the root of the disease is in the adrenal gland not producing enough of the hormone cortisol, or sometimes not enough of the hormone aldosterone to satisfy the body’s needs. Cortisol is in the class of hormones called glucocorticoids and

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    Essay Length: 702 Words / 3 Pages
    Submitted: January 30, 2010 By: Top
  • Adeherance to a Mediterranean Diet

    Adeherance to a Mediterranean Diet

    Adherence to a Mediterranean Diet and survival in a Greek Population Hypothesis: The purpose of this study was to find out if Adhering to a “Mediterranian” diet will improve longevity. In recent years there have been several epidemiologic studies that have tried to link dietary patterns with increased longevity. This particular study focuses on the Mediterranian diet and its effects on longevity. The Traditional Mediterranean diet is characterized by a high intake of vegetables, legumes,

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    Essay Length: 892 Words / 4 Pages
    Submitted: December 22, 2009 By: regina
  • Adjuvant Exemestane with Ovarian Suppression in Premenopausal Breast Cancer

    Adjuvant Exemestane with Ovarian Suppression in Premenopausal Breast Cancer

    Evelyn Acevedo Physiology 101 September 15, 2014 Adjuvant Exemestane with Ovarian Suppression in Premenopausal Breast Cancer Hypothesis: The hypothesis of the article: “Adjuvant Exemestane with Ovarian Suppression in Premenopausal Breast Cancer” is that an aromatase inhibitor improves outcomes, as compared with tamoxifen, in postmenopausal women with hormone receptor-positive to breast cancer. Testing to see the Adjuvant Exemestane ovarian suppression in premenopausal breast cancer. Testing the Hypothesis which is considered the experiment: Five Factors needed for

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    Essay Length: 341 Words / 2 Pages
    Submitted: November 15, 2014 By: Evelyn Acevedo
  • Adrenoleukodystrophy

    Adrenoleukodystrophy

    Adrenoleukodystrophy Adrenoleukodystrophy is a rare, inherited metabolic disorder. People with ALD have high levels of saturated, very long chain fatty acids that build up in the brain. This is due to the individual’s inability to produce the enzyme that breaks down these fatty acids. The fatty acids dissolve the myelin surrounding the nerve cells. No one knows exactly why these fatty acids destroy myelin, and this is why the cure took so long to find.

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    Essay Length: 267 Words / 2 Pages
    Submitted: January 5, 2010 By: Kevin
  • Adult Hodgkin’s Lymphoma

    Adult Hodgkin’s Lymphoma

    Hodgkin's Lymphoma or Hodgkin's Disease (two terms for the same thing) is a malignant (cancerous) growth of cells in the lymph system. Hodgkin's Disease is the better known form of lymphoma (the other lymphomas are grouped into what is called the Non-Hodgkin's Lymphomas). The incidence or number of cases of Hodgkin's lymphoma (about 7880 cases, 4330 men and 3550 women in the United States this year) is significant although less than the number of cases

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    Essay Length: 425 Words / 2 Pages
    Submitted: March 24, 2010 By: Bred
  • Advanced Oxidation Process

    Advanced Oxidation Process

    INTISARI Limbah adalah bahan sisa dari suatu aktivitas atau proses yang sudah tidak memiliki nilai ekonomi lagi (tidak dibutuhkan atau tidak dapat digunakan lagi). Limbah dapat berasal dari aktivitas biologi makhluk hidup, industri perakitan, industri pengolahan suatu bahan, sisa-sisa penggunaan suatu barang, dan lain-lain. Limbah yang dihasilkan dari industri kimia biasanya mengandung senyawa-senyawa berbahaya yang dapat merusak keseimbangan ekosistem perairan. Hal tersebut dikarenakan bahan baku maupun sisa-sisa hasil produksi pada industri kimia tidak dapat diuraikan

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    Essay Length: 269 Words / 2 Pages
    Submitted: May 25, 2010 By: LIa
  • Advanced Technology of the Treatment of Breast Cancer

    Advanced Technology of the Treatment of Breast Cancer

    Advanced Technology of the Treatment of Breast Cancer This year 203,000 women will be diagnosed with Breast Cancer, and 40,000 of them are expected to die. Breast Cancer is the second leading cause of cancer-related death among women the ages of 35-54. There are numerous ways breast cancer can be treated if found early. The key to treating breast cancer is early detection, beast self-exams, and early mammograms. One out of every eight women will

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    Essay Length: 1,694 Words / 7 Pages
    Submitted: November 22, 2009 By: Mike
  • Advances in the Telescope

    Advances in the Telescope

    Advances in the Telescope The human race has always maintained a curiosity of the world around them. They have explored the depths of the ocean floor to the peak of Mt. Everest, but there has always been that drive for something more. That drive leads most curious eyes to the sky, with the thought of what lies beyond those sparkling stars. For centuries astronomers were unable to explore these outer reaches of space until the

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    Essay Length: 1,351 Words / 6 Pages
    Submitted: January 16, 2009 By: Anna
  • Advantage of Genetic Engineering

    Advantage of Genetic Engineering

    Genetic Engineering in Humans, imagine a world where there is no diabetes, cancer, AIDS, and other dreaded diseases; a world where people could choose what their children could look like. To some, this is a scary, unnerving thought, but to others this is an exciting new step into our future. This unraveling discovery called genetic engineering is not science fiction anymore and may be the next stage in human evolution. There are many risks

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    Essay Length: 540 Words / 3 Pages
    Submitted: March 4, 2010 By: Edward
  • Advantages and Disadvantages of Biometrics

    Advantages and Disadvantages of Biometrics

    Advantages and Disadvantages of Biometrics Let us now examine the advantages and disadvantages of biometrics in two groups of applications: the commercial positive recognition applications that may work either in the verification or the identification modes, and the government and forensic negative recognition applications that require identification. Advantages and Disadvantages of DNA Testing in Biometrics Solutions The ongoing project to map the human genome affects all of us in several key areas. The first is

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    Essay Length: 1,002 Words / 5 Pages
    Submitted: March 15, 2010 By: Jack
  • Aero Engineering

    Aero Engineering

    Definition A brief definition of Systems Analysis and Design is: Work that involves applying analytical processes to the planning, design and implementation of new and improved information systems to meet the business requirements of customer organizations. http://www.opm.gov/fedclass/text/GS-2200.htm Systems analysis and Design (SAD) exists due to the fact that it allows business systems creators to adequately discover what tasks the new system has to perform, outline these tasks, and design and implement an adequately working system.

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    Essay Length: 1,826 Words / 8 Pages
    Submitted: March 30, 2010 By: David
  • Aerospace Engineering

    Aerospace Engineering

    Aerospace Engineering First of all, I would like to say that Aerospace Engineering is my major, so I had heard a little bit about what the lady talked about before. She basically went over the different aspects of Aerospace Engineering. I liked the majority of this presentation. The presenter explained many things that interested me. She told us about how there are now three different types of Aerospace. There is the basic airplane design part,

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    Essay Length: 296 Words / 2 Pages
    Submitted: April 29, 2010 By: Top

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