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OxyContin__Savior_Or_Killer_ 时间:2013-11-13
OxyContin: Savior Or Killer' OxyContin: Savior or Killer' THESIS STATEMENT: With the recent overdose deaths and rise in criminal activity linked to the abuse of the painkiller OxyContin local and state officials as well as the drugs manufacturer, Purdue Pharma, have began taking steps in curbing its abuse. I. The Problem with OxyContin A. What OxyContin is 1. Intended use 2. Abuse
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Ozone 时间:2013-11-13
Ozone The Ozone Our Earths atmosphere is divided into several layers. The lowest region, the troposphere, extends from the Earths surface up to 10 kilometers in altitude. All human activity occurs in the troposphere. The next layer, the stratosphere, continues from the end of the troposphere to about 50km. Most air traffic occurs in the stratosphere. Ozone is a tri-atomic all
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Stem_Cell_Research 时间:2013-11-13
Stem Cell Research STEM CELL RESEARCH Stem cell are found in embryos, umbilical cords, children and adults. Stem cells are blank cells that produce all cells in the body. After conception a ball of cells form called a blastocyst at this stage is where you will find the stems thats that have the potential to grow into all cells that you find in the human body. Stem cell res
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Stem_Cell 时间:2013-11-13
Stem Cell Stem Cells: What are they and where do they come from During these days of advances in treating and curing many well known human diseases, stem cell research has begun to raise the human spirit by offering hope to those who think they dont have any. The new research in human developmental biology has led to the discovery of human stem cells, including embryonic stem cells
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Stem_Cell_Research 时间:2013-11-13
Stem Cell Research Stem cell research is a very controversial issue that many people disagree about. Federal funding will help advance the research and may cure some diseases. Some other people believe that the research kills embryos and that the federal government shouldnt fund research because of that fact. Stem cells are cells that can be taken embryos, aborted fetuses, and human a
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Stem_Cells_in_the_Immune_System 时间:2013-11-13
Stem Cells in the Immune System STEM CELLS AND THE IMMUNE SYSTEM In recent years, scientists have been studying stem cells and their relationship to helping further medical advancement. Stem cells can be compared to blank slates, or cells that have yet to become specialized. They have the ability to become any type of cell to form skin, bones, organs, or any other body parts. This f
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Bones 时间:2013-11-13
Bones BONE The skeletal system includes the osseous tissues of the body and the connective tissues that stabilize or interconnect the individual bones. The bone is a dynamic tissue. Throughout the lifespan, bone adjusts to the physiologic and mechanical demands placed on it by the processes of growth and remodeling. Bone serves the organism at multiple levels: As a system, bones pe
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Cloning 时间:2013-11-13
Cloning Cloning For many years, the cloning of adults, animals or humans has been mostly the object of science fiction, something unforeseen by man. However, The world was shocked in February of 1997 when British scientist, named Ian Wilmot announced that his research team successfully cloned lamb named dolly from an adult sheep at the Roselyn Institute in Scotland.(1) For what see
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State_Of_Research_On_The__Snowball_Earth_Hypothesis_ 时间:2013-11-13
State Of Research On The Snowball Earth Hypothesis State of research on the "Snowball Earth Hypothesis" The "Snowball Earth Hypothesis" also known as the"Varangia glaciation" is a hypothesis presented in 2001 by Geologist Paul Hoffman. (Wikipedia, 2002) The hypothesis purposes that 540 million years ago during the Neoproterozic, a meter thick of ice covered the oceans a
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Structure_and_Bonding 时间:2013-11-13
Structure and Bonding STRUCTURE AND BONDING In my essay on the structure and bonding in different substances, I am going to focus on electronic arrangement and their effects on the properties of the substance. METALIC BONDING Metallic bonding occurs between atoms with low electronegativity (.i.e. 1, 2 or 3 valence electrons); therefore there are many vacancies in valence shell. The c
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Statistics 时间:2013-11-13
Statistics Introduction Statistical methods help in making intelligent decisions, otherwise the decisions are only pure guesses. The data that I am going to analyze are collected from the Internet, the source can be found in the references. In the assignment I am going to refer to these flats as apartments near Georgetown University.These apartments are all one-bedroom apartments wit
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Steam_Engine 时间:2013-11-13
Steam Engine Steam Engine Fitzgerald Thomas Newcomen was not the first person to be fascinated by boiling water and by the steam that came from the spout of a kettle. People had watched this happen for centuries, and occasionally some had tried to put this steam to use. Hero of Alexandria, a Greek scientist, had made a little steam engine in about the 1st ce
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Steller_Sea_Lions 时间:2013-11-13
Steller Sea Lions Steller Sea Lions The sea lions acquire their name from George Wilhelm Steller. George was a distinguished German naturalist. He went on an expedition to Alaska in 1741. There Vitus Bering accompanied George while he studied the sea lions. There he was the first qualified observer to study and classify the sea lions. Steller Sea lions are a member of the Otaridae
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Storage_Hardware 时间:2013-11-13
Storage Hardware Introduction Storage is one of the basic functions of any information processing system. Data and information need to be stored after input, during processing, and before needed as output. Primary Storage Areas The primary storage unit can be conceptually subdivided into input storage, output storage, program or instruction storage, and working storage. Storage rec
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Structure_And_Function_Of_Actin_And_Myosin_In_Skeletal_Muscl 时间:2013-11-13
Structure And Function Of Actin And Myosin In Skeletal Muscle Structure and Function of Actin and Myosin In Skeletal Muscle Tissue Skeletal muscle comprises the largest single organ of the body. It is highly compartmentalized, and we often think of each compartment as a separate entity (such as the bicep muscle). Each of our individual muscles is composed of single cells or fib
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Synapse 时间:2013-11-13
Synapse A chemical synapse consists of a neuronal presynaptic terminal, a synaptic cleft and a postsynaptic membrane with associated receptor proteins. The chemical synapse is highly developed in the CNS. It conducts the signal only one way, and has a synaptic delay. The presynaptic axon terminal typically broadens to form a bouton terminaux (presynaptic terminal). The action potentia
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Taiga 时间:2013-11-13
Taiga Taiga Introduction- The Taiga is a very Interesting biome to know about and to study. Climate in the Taiga A. The temperature in the Taiga II Animals in the Taiga A. What animals live in the Taiga B. In what way are the animals affected by the climate III The growth and vegetation of plants and trees A. The vegetations of the trees and plants B. The deciduou
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Tattooing 时间:2013-11-13
Tattooing Tattooing, method of decorating the skin by inserting colored substances under the surface. The skin is punctured with a sharp instrument, which now is usually an electric needle. In many parts of the world tribal people use tattooing and scarification to indicate social rank and affiliation or as a sign of mourning. Scarification involves slashing the skin and introducing i
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Sustainable_Development_In_The_Environment 时间:2013-11-13
Sustainable Development In The Environment Since 1962, with the publishing of the seminal work "Silent Spring," the assumption that the environment had an infinite capacity to absorb pollutants was first shattered. The book brought together research on toxicology, ecology and epidemology to suggest that agricultural pesticides were building to catastrophic levels, and that this was link
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Teratogens 时间:2013-11-13
Teratogens To put a definition plainly, teratogens are agents responsible for many known birth defects. Research found suggests over eight hundred known teratogens. In this paper, you will find interesting facts based on research, the relationship between teratogens and developmental psychology and some personal views based on the information and research found for this piece. T
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Supernovae__Spectacle_or_Disaster_ 时间:2013-11-13
Supernovae: Spectacle or Disaster' 20 February 2003 Supernovae: Spectacle or Disaster' A simplified definition of a supernova is a rare celestial phenomenon involving the explosion of most of the material in a star, resulting in an extremely bright, short-lived object that emits vast amounts of energy, (American 381). The word supernova originated when ancient astronomers thought t
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Charasmatic_Carbons 时间:2013-11-13
Charasmatic Carbons Carbon Credits In the book, The New Economy of Nature, the authors Gretchen C. Daily and Katherine Ellison give a detailed history of the evolution of carbon credits in chapter 2 titled : How to Make Carbon Charismatic. David Brand was a Canadian Forester who played a key role in starting the worlds first carbon rights. He did this because he wanted to offset ca
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Testicular_Cancer 时间:2013-11-13
Testicular Cancer Testicular cancer occurs in approximately 1 in 25,000 men per year. It is 4 times less common in Afro-American men compared to Caucasian men. The risk of developing testicular cancer in a mans lifetime is approximately 1 in 500. It occurs most commonly between the ages of 15 and 40 years. It can also occur in infancy and late adulthood (over 60 years old). Individuals
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Comets 时间:2013-11-13
Comets A Comet looks like a star with a tail. Some comets do not have tails, and look like hazy, round spots of light. But most comets have three parts; a nucleus, a head, and a tail. The bright central nucleus may be nearly as large as the earth, which is about 7,900 miles in diameter. The head, or coma, surrounding the nucleus, may be from 30,000 to 100,000 miles in diameter. The
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Owl_Pellets 时间:2013-11-13
Owl Pellets INTRODUCTION Owl pellets are tiny undigested portions, which the owl eats. The owl regurgitates these compact pellets, which contain fur, bones, etc. of small rodents. Owls mostly eat pine voles. Dry pellets do not smell or have an unpleasant odor for individuals to handle. The purpose of observing the dry pellets is to teach a part of the natural food chain and to teach sk
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Tha_Clown_Fish 时间:2013-11-13
Tha Clown Fish The Clownfish By: Matthew Parker True Percula Clownfish (Technically referred to as-The Amphiprion Percula) The True Percula Clownfish is a very interesting species, This species has many various qualities varying from the color to the reproductive process and finally to the amazing fact that this fish can actually change its sex. These and many other intriguing fact
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Temperature_Determined_Sex_In_Turtles 时间:2013-11-13
Temperature Determined Sex In Turtles Threats to reptiles and amphibians include a litany of familiar factors including habitat destruction, pollution, disease, and over-exploitation by an increasingly hungry world. In the face of this onslaught, turtles face a more insidious threat: global increases in temperature caused by greenhouse gases (Lovich, 1997). This is an especially large th
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The_Anatomy_Of_The_Ear 时间:2013-11-13
The Anatomy Of The Ear The anatomy of the ear consists of three sections: the outer ear, middle ear, and the inner ear. The outer ear comprises the auricle and the external auditory canal. The auricle is the part we can see. It has the job of collecting sound waves and conducting them to the canal. The external auditory canal leads from the auricle to the eardrum. Special glands can p
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The_Atom 时间:2013-11-13
The Atom The History Behind The Atom Throughout the discovery of the atom, many scientists worked to formulate how the atom works. Which began in the early 1800s with John Dalton, to our current model of the electron cloud developed by Schrodinger. During this long process of the discovery the atom, took many models and scientists. The entire group of scientists who assisted
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The_Bubonic_Plague 时间:2013-11-13
The Bubonic Plague The Bubonic Plague The bubonic plague is an infection in humans and several species of rodents. It is caused by Yersinia pestis which used to be known as Pasteurella. Yersinia pestis is a bacteria that is transmitted by fleas that have feed on the blood of infected humans and rodents. The plague bacteria, when ingested, multiply in t

