Science
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4,610 Essays on Science. Documents 451 - 480
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Astronomy Term Assignment
The belief that solar variation can be correlated to recent global warming trends has become a highly debated topic in the scientific community. By comparing and charting historical sunspot data with climate models as well as recorded data, it has become the belief of many scientists that the increase in solar variation, or the amount of energy emitted by the sun, affects global temperatures. Conversely, the solar variation theory has been met with great skepticism.
Rating:Essay Length: 652 Words / 3 PagesSubmitted: January 11, 2010 -
Astronomy, Why Is the Sky Dark
“Why is the night sky dark?”(Hienrich) For thousands of years this question, also known as Olber’s paradox, has been asked. Astronomers are constantly growing closer to the answer but still no one has yet found a finite answer. As scientists relentlessly collect data hoping to find some clue as to the answer to this riddle we seem to realize that the answer may be because of something that is too mind blowing for us
Rating:Essay Length: 541 Words / 3 PagesSubmitted: February 5, 2010 -
Asymmetrical Plasticity of an Intertidal Snail
Asymetrical developmental Plasticity in an Intertidal Snail The author of this research was Ron J. Etter. The Nucella Lapilus is a gastropod that resides on both sides of the North Atlanic. In the eastern North Atlantic it extends from Cape St. Vincent in Portugal to Novaya Zemlya. In the Western parts of the North Atlantic it is found from Long Island Sound to Notre Dame. Vertically it ranges from high water tides to low water
Rating:Essay Length: 609 Words / 3 PagesSubmitted: November 16, 2009 -
At Death Our Bodies Should Not Be Considered Public Property
Public Property Property owned by the government or one of its agencies, divisions, or entities. Commonly a reference to parks, playgrounds, streets, sidewalks, schools, libraries and other property regularly used by the general public. The Human Tissue Act 2004 The current law regarding the use of any tissue or organ is the Human Tissue Act 2004. This has replaced the Human Tissue Act 1961, the Anatomy Act 1984 and the Human Organ Transplants Act 1989.
Rating:Essay Length: 1,344 Words / 6 PagesSubmitted: January 2, 2010 -
Athelete Blind Spot Test
Abstract Everyone has a blind spot in the visual field caused by an absence of nerves on the retinal wall where the nerve ganglia enter. Our brains "correct" this blind spot by filling-in the missing information so that we do not notice the blind spot in normal, daily activity. There have been a few studies conducted to determine how the brain compensates for the phenomenon. Recent studies indicate that in certain people seeking chiropractic treatment,
Rating:Essay Length: 2,296 Words / 10 PagesSubmitted: December 9, 2009 -
Atherosclerosis
One of the foremost leaders of mortality in the US is coronary artery disease (CAD). Atherosclerosis is an abnormal thickening and hardening of the arterial walls caused by fat and fibrin deposits. It is a form of arteriosclerosis, which is the actual thickening, hardening, and loss of elasticity of arterial walls. It affects primarily the coronary arteries (arteries that carry blood to the heart, arranged in a crown-like shape around the heart), the aorta, the
Rating:Essay Length: 1,331 Words / 6 PagesSubmitted: November 17, 2009 -
Atherosclerosis: The Silent Killer
Atherosclerosis: The Silent Killer Atherosclerosis is one of a group of health problems that define coronary artery disease, oftentimes referred to as heart disease. Atherosclerosis is the leading cause of heart disease in the United States. The following is the definition provided by the American Heart Association: Atherosclerosis (ath"er-o-skleh-RO'sis) comes from the Greek words athero (meaning gruel or paste) and sclerosis (hardness). It's the name of the process in which deposits of fatty substances, cholesterol,
Rating:Essay Length: 3,033 Words / 13 PagesSubmitted: December 21, 2009 -
Atlanta Takes Part in Multiple Efforts to Improve Air Quality and Commuting
The population of Metro Atlanta has more than doubled since 1982, bringing the estimated total of residents to more than three million. Atlanta, being the hub city of the South Eastern United States, is facing many air pollution and traffic congestion problems due to the number of people driving automobiles everyday. The population increase has feed the tripling of the system wide daily vehicle miles traveled. It has been estimated that Atlantans drive approximately
Rating:Essay Length: 1,685 Words / 7 PagesSubmitted: November 12, 2009 -
Atmospheric Pollutants
1.Gases in The Air Sources of Sulfur Dioxide There a diverse range of natural sources of sulfur dioxide in the atmosphere such as from volcanic gases: S(s) + O2(g) ( SO2 (g), geysers and combustion of organic matter in bushfires. Also, anaerobic bacteria in poor aerated soil oxidize H2S to SO2: . Emissions of sulfur dioxide have accelerated since the Industrial revolution. Industrial emissions of sulfur dioxide have accelerated since the Industrial revolution. Industrially sulfur
Rating:Essay Length: 1,827 Words / 8 PagesSubmitted: December 2, 2009 -
Atom - Smallest Particle
An atom is the smallest particle that comprises a chemical element. An atom consists of an electron cloud that surrounds a dense nucleus. This nucleus contains positively charged protons and electrically neutral neutrons, whereas the surrounding cloud is made up of negatively charged electrons. When the number of protons in the nucleus equals the number of electrons, the atom is electrically neutral; otherwise it is an ion and has a net positive or negative charge.
Rating:Essay Length: 320 Words / 2 PagesSubmitted: November 9, 2009 -
Atomic Bomb
Atomic bombs were the first nuclear weapons to be developed, tested, and used. In the late 1930s physicists in Europe and the United States realized that the fission of uranium could be used to create an extremely powerful explosive weapon. In August 1939, German American physicist Albert Einstein sent a letter to U.S. president Franklin D. Roosevelt that described this discovery and warned of its potential development by other nations. The U.S. government established the
Rating:Essay Length: 412 Words / 2 PagesSubmitted: March 19, 2010 -
Atomic Bomb
Herbert Feis served as the Special Consultant to three Secretaries of War. This book was his finale to a series on the governmental viewed history of World War II, one of these receiving the Pulitzer Prize. Mr. Feis gives personal accounts in a strictly factual description leaving out no information that the president and high officials discussed within the walls of the White House. The information that is presented is referenced countlessly throughout the
Rating:Essay Length: 2,791 Words / 12 PagesSubmitted: April 24, 2010 -
Atomic Bombing
Nuclear war was brought about through the invention of the atomic bomb. The atomic bomb was first thought of in 1939. The Manhattan Project was devoted to researching and constructing the bomb (Serendipity: Manhattan Project para.1). Six years and 2 billion dollars later the Manhattan Project produced the first atomic bomb in history (Serendipity: Manhattan Project para.5). The bomb was tested in northern New Mexico on July 16th, 1945. The creators of the bomb watched
Rating:Essay Length: 1,391 Words / 6 PagesSubmitted: December 23, 2009 -
Atomic Spectra
Prian Jani Heli Desai, Janni Patel Formal Atomic Spectra Report C125 Experimental Chemistry I Section 18927 IUPUI March 18th 2007 ATOMIC SPECTRA INTRODUCTION The study of interaction between light and an object is known as spectroscopic studies. A major factor in understanding the structure of atoms and molecules, and going as far as verifying the quantum theory is from what we have learned from Spectroscopic Studies. This experiment helps better the understanding of how to
Rating:Essay Length: 416 Words / 2 PagesSubmitted: April 5, 2010 -
Atp as a Source of Energy for Periplasmic Permease in the Membrane Transport Systems
The many components of cells are separated by membrane bound compartments such as periplasm, inner membrane and cytoplasm. Molecules may cross these membranes by simple or facilitated diffusion; however, active transport with ATP is required to drive the transport of large, highly charged and highly hydrophobic molecules against their concentration gradient. This energy requiring process couples ATP hydrolysis with transport proteins to bypass the impermeable nature of membranes (Wikipedia, Nov. 14, 2005, electronic communication). In
Rating:Essay Length: 603 Words / 3 PagesSubmitted: February 13, 2010 -
Attenbourough Specials December 30, 2006
Last December 30, 2006, Attenborough presented different kinds of animals on how they adapt to survive in their environment. On top of the list is the Barbarusa animal. They live in relatively small groups, eating bits and pieces of food. The Barbarusas are attracted to clay because it neutralizes their body toxins. The male Barbarusas animals are bizarre animals, containing poison in their bodies. While a test of strength is also infamous for young males.
Rating:Essay Length: 1,133 Words / 5 PagesSubmitted: December 7, 2009 -
Attention Deficit Hyperactivity Disorder
“ADHD (Attention Deficit Hyperactivity Disorder) is like living in a fast moving kaleidoscope where sounds, images and thoughts are constantly shifting.” (NIMH-ADHD) ADHD can be very frustrating and difficult for children. Medication and treatment are available and have been proven effective. Parents can also get frustrated and they could do something wrong. ADHD is effectively treated with medication and therapy. There are three basic types of ADHD. They are inattention, hyperactivity, and impulsivity. (NIMH-ADHD)
Rating:Essay Length: 1,431 Words / 6 PagesSubmitted: November 14, 2009 -
Attention Deficit Hyperactivity Disorder
Attention Deficit Hyperactivity Disorder (ADHD) Attention Deficit Hyperactivity Disorder (ADHD) or Attention Deficit Disorder without the Hyperactivity (ADD) is a condition of the brain that makes it difficult for children to control their behavior in school and social settings. This condition is also called by various names: hyperactivity, minimal brain dysfunction, minimal brain damage and hyperkinetic syndrome. In 1968 the name was changed to hyperkinectic, meaning wildly fast-paced or excited, reaction of childhood. The focus
Rating:Essay Length: 1,961 Words / 8 PagesSubmitted: November 20, 2009 -
Attention Deficit Hyperactivity Disorder
Attention deficit hyperactivity disorder (ADHD) is a behavioral disorder that is typified by distractibility, inability to sit still, restlessness, and difficulty concentrating on one thing for any period of time. ADHD generally occurs in children; however a rising amount of adults are being diagnosed with the disorder. In the United States, ADHD is the most frequently diagnosed childhood psychiatric disorder, as it accounts for 30-50% of all mental health referrals (Nigg, 2006). ADHD is present
Rating:Essay Length: 1,841 Words / 8 PagesSubmitted: April 14, 2010 -
Australian Adaptations
Australian Animal Essay Native species have flourished Australia mainly through easy to find diets and unique birthing methods. In earlier times, Australia was proven to be cut off from the rest of the world’s landmasses as a result many animals were able to flourish without competitors (Australian Fauna); many marsupials have a pouch and monotremes. Due to its isolation most placental animals were introduced such as the rabbit and the fox in fact the
Rating:Essay Length: 595 Words / 3 PagesSubmitted: November 8, 2017 -
Authorize.Net Shopping Cart Certification Program
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Rating:Essay Length: 487 Words / 2 PagesSubmitted: April 3, 2010 -
Autism
Imagine, for a second, if you were seated where you are now, but you were waiting as though in torture, trying to keep your hands and feet still and trying to stay silent. Imagine that you’re able to think clearly and intelligently about what I’m saying, but you can’t stop turning your head around the room and blurting out random things as loud as you can. Imagine that your looks, your communication skills, the way
Rating:Essay Length: 1,737 Words / 7 PagesSubmitted: November 21, 2009 -
Autism
Originally thought to be a result of poor parenting, autism, first diagnosed in 1943 by Dr. Leo Kanner, has now been linked to genetic influences. Autism is defined as “A psychiatric disorder of childhood characterized by marked deficits in communication and social interaction, preoccupation with fantasy, language impairment, and abnormal behavior, such as repetitive acts and excessive attachment to certain objects. It is usually associated with intellectual impairment” (American Heritage, 2000). With personality traits
Rating:Essay Length: 877 Words / 4 PagesSubmitted: December 5, 2009 -
Autism
Autism, it is a terrible disability that affects 1 out of every 166 children. There are more people with autism than pediatric cancer, diabetes, and AIDS combined. Autism is a multifaceted neurobiological disorder that usually lasts throughout a person's lifetime. It occurs in all racial, ethnic, and social groups and four out of every five people that get autism are male. Autism affects three crucial areas of development: communication, social interaction, and creative or imaginative
Rating:Essay Length: 1,008 Words / 5 PagesSubmitted: January 31, 2010 -
Autism
All autistic children are gifted. Autism is caused by bad parenting skills. People with autism show no emotion. Autistic children cannot learn. The previous statements are examples of common misconceptions of children with autism. These statements are false. When one does not truly understand a condition or disorder, he or she is often tempted to make up that which he or she does not know. These myths are a product of that behavior. Autism
Rating:Essay Length: 1,007 Words / 5 PagesSubmitted: March 19, 2010 -
Autism: It May Be Treatable with Diet
Method of Organization: Topical Order Specific Purpose Statement: To inform my audience of what Autism is and how it can be treated with diet. Central Idea: Autism is a developmental problem that can be treated by a simple change in diet. Autism: It may be Treatable with Diet Introduction: I. There is a nation wide epidemic spreading the country like a wildfire. According to the Centers for Disease Control in 2003, one in every 166
Rating:Essay Length: 796 Words / 4 PagesSubmitted: January 28, 2010 -
Autos and Highways
Chapter 11- Autos and Highways • Congestion: Equilibrium versus Optimum traffic Volume o The total cost of a commuting trip is the sum of the monetary and time cost o The demand curve is a marginal benefit curve ~ shows how much the marginal traveler is willing to pay for the highway trip o Congestion Externality: the marginal driver slows traffic and increases travel time, forcing other drivers to spend more time on the road
Rating:Essay Length: 518 Words / 3 PagesSubmitted: March 8, 2010 -
Auxin
Auxin Auxin are essential plant hormones that promote the lengthening of the cell, which is a critical step before the cell goes through cell differentiation. The auxin can do this by increasing the amount of water taken in by the cell, which improves the elasticity of the cell and therefore can take more water and can get increasingly longer. And don’t think for a second that that’s all auxins do auxins may have been the
Rating:Essay Length: 744 Words / 3 PagesSubmitted: January 31, 2010 -
Avian Influenza
Avian Influenza (Bird Flu) An influenza pandemic is a global outbreak of disease that occurs when a new influenza A virus appears or “emerges” in the human population, causes serious illness, and then spreads easily from person to person worldwide. Pandemics are different from seasonal outbreaks or “epidemics” of influenza. Seasonal outbreaks are caused by subtypes of influenza viruses that are already in existence among people, whereas pandemic outbreaks are caused by new subtypes or
Rating:Essay Length: 1,497 Words / 6 PagesSubmitted: December 1, 2009 -
Avian Influenza - Basic Information
DIAGNOSIS The symptoms of avian influenza in humans range from typical flu-like symptoms including cough, sore throat and sore muscles, to eye infections, pneumonia, severe respiratory disease, organ failures, and other severe life threatening complications. Avian influenza can only be detected in humans by a laboratory test. The main risks for human health are the risk of direct infection from bird to human, and the risk that the disease will change into a form that
Rating:Essay Length: 731 Words / 3 PagesSubmitted: February 22, 2010