Science Essays
Autumn a magnificent end
Autumn a magnificent end Autumn, in a deeper sense, is a magnificent ending to an era. Although all the leaves fall and the sun fails to shine for as long each day as it did during the summer, the death of the cycle of the living seasons is spectacular. It brings vibrant color, tolerable weather, and the promise that it will return again in the spring. Like life, people spend most of it living and taking in all of the wonderful experiences that they encounter along the way. In the end, when ...
Attention deficit hyperactive disorder
Attention deficit hyperactive disorder Attention Deficit Hyperactive Disorder (ADHD), is the most common psychiatric disorder among children today. It�s symptoms are not necessarily obvious and start at various times. Some children give indication of having the disorder before they are born, others are not diagnosed with having it until their preteen years. ADHD overlaps with several other conditions, further confusing physicians and mental health professionals who attempt to provide...
Attention deficit hyperactivity disorder
Attention deficit hyperactivity disorder Attention Deficit Hyperactivity Disorder Attention Deficit Disorders have become a very highly controversial topic during the last decade. Attention Deficit Disorder, also known as ADD, is a broad, almost generic term for the different types of Attention Deficit Hyperactivity Disorders. The Diagnostic and Statistical manual of the American Psychiatric Association offers us this definition: �ADHD is a disorder that can include a lis...
Augiga the charioteer
Augiga the charioteer Auriga, the Charioteer is the last of the autumn constellations with a right ascension of six hours and a declination of 41.73 degrees. Auriga is an ancient Northern Hemisphere constellation featuring one of the brightest stars in the sky: Capella. Auriga is usually shown as a charioteer; the young Auriga wields a whip in one hand and holds a goat (Capella) and her two/three kids in the other. To find Auriga, first locate Orion. Taurus is to the right (...
Aurora borealis 2
Aurora borealis 2 INTRODUCTION One of nature=s most spectacular phenomenons to date is the once mysterious aurora. This dazzling show of lights has been working its magic for people around the world for several years. But, few know the cause of this amazing light display. It is the purpose of this report to reveal this mysteryC a mystery that scientists aspired to solve for nearly 300 years. WHAT IS AN AURORA? An aurora is a luminous atmospheric phenomenon that can be seen most fr...
Atmospheric Circulation and More
Atmospheric Circulation and More Atmospheric Circulation and More The global energy balance and atmospheric motion mainly determine the circulation of the earth's atmosphere. There is a hierarchy of motion in atmospheric circulation. Each control can be broken down into smaller controlling factors. The global energy balance is an equal balance of short-wave radiation coming into the atmosphere and long-wave radiation going out of the atmosphere. This is ca...
Atom and qi
Atom and qi Atom & Qi The atom is the smallest portion of a substance that is not perceivable by human senses. The notion of atoms was conceived by ancient Greeks and was developed over thousands of years of scientific inquiry. The concept of qi as the most basic substance of which the world (everything) is comprised, was understood by the ancient Chinese. Both ��atom�� and ��qi�� are believed to exist by human beings and both are considered to be unseen objects (un...
Atomic bombs
Atomic bombs ATOMIC BOMBS In 1945, the bomb explosion on Hiroshima and Nagasaki was one of the most devastating in all history. The bomb that struck them without notice produced devastative effects. Bombs today are getting larger and stronger. The technology of weapons nowadays has lead to war, and war has caused catastrophes to families as well as friends. Today, the United States is the leading country that possesses the most dangerous bombs such as the Atomic Bomb, T.N.T's, ...
Attention deficit disorder ( add)
Attention deficit disorder ( add) Attention Deficit Disorder (ADD) Everybody knows at least on person with a difficulty of staying still, sustaining attention or inconvenient impulses. For some people the problem is so serious that it is regarded as a psychiatric disorder. Formally known as hyperkinesis, hyperactivity, minimal brain damage and minimal brain dysfunction, Attention Deficit disorder received its present name in the late 70s, and was again restored in 1994 edition of DSM IV...
Attention deficit disorder
Attention deficit disorder Growing Transitions 3 I Introduction In the United States of America, one to three percent of the school age population have the full attention deficit (hyperactivity) Disorder syndrome (Internet site 1). This numerical figure may not seem to convey a need for enlightenment on this disability. As an attention deficit disorder child (and adult), I feel that it is important for the public to be aware. It could happen to your child just as easily as it did ...
Atention defficit disorder
Atention defficit disorder Attention Deficit Disorder is caused by a chemical imbalance in the brain. There appears to be a deficiency in the brains ability to produce or use certain chemicals called transmitter substances or neurotransmitters. The theory is that a shortage of certain neurotransmitters results in the brain being under-stimulated, therefore it's deficient in regulating its own activities such as attention. Attention Deficit Disorder is characterized by a number of comm...
Athrax
Athrax The germ warfare agent anthrax is a bacterium that, if inhaled, can kill a person in a matter of days. It sounds like science fiction, like something a mad scientist developed in a lab in hopes of taking over the world. In reality is an ancient disease of live stock and humans known since Biblical times. It just never made so many headlines before. Anthrax is an infectious disease known as Bacillus Anthracis. The bacterium can survive for centuries in a spore form. Their inside coa...
Atm network
Atm network The Asynchronous Transfer Mode has been chosen as the standard system concept for integrated broadband communication networks by the ITUT. The system is predicted to grow rapidly as soon as it becomes widely accepted by network operators and users. Why has communications evolved in history towards the ATM concept and why has it been chosen as the broadband solution? In the late 1800's public telephone networks capable of transmitting analogue voice signals were establi...
Atmosphere crisis
Atmosphere crisis We are living in the midst of a great chemical experiment, and some serious consequences are becoming apparent to scientists. More than two billion pounds of chemicals are spewed into the air each year. These chemicals are brewing a disastrous stew, resulting in an atmosphere crisis. The greatest consequences of the atmosphere crisis may be the greenhouse effect( global warming) and the ozone deletion. If humankind wants to survive well into the next millennium, than we mus...
Aspirin a brief history
Aspirin a brief history Introduction One hundred years ago, a young chemist in Germany made a discovery which, today, continues to ease our aches and pains, reduce our fevers, fight inflammation and save lives. On August 10, 1897, this chemist, Felix Hoffmann, discovered a stable form of acetylsalicylic acid, the active ingredient in aspirin. Hoffmann had been seeking a pain-relieving medication for his father's debilitating rheumatism. Not only did the drug ease his father's...
Asteroids
Asteroids The universe is a shooting gallery and earth is the bullseye. The earth is always under threat of a doomesday asteroid that will wipe out civilization. There are over one thousand asteroids traveling toward earth and only three quarters are accounted for. Where are the other one forth? No one knows because the government doesn't fund NASA astrologists enough to cover the astroids. Just one impact could end civilization as we know it. No matter where it hits everything would die, ev...
Asthma 2
Asthma 2 ASTHMA "Asthma is a respiratory disease in which spasm and constriction of the bronchial passages and swelling of their mucous lining cause obstruction of breathing." (Anastasiow 1997) Etiology: " This disease is often due to allergies, such as dust, smoke, cold air, exercise, animal fur or feathers, molds, and pollen. Allergic asthma is also called atopic or extrinsic asthma. Many people with allergic asthma also suffer from hay fever, which is an allergic reaction, ...
Asthma and how medication allows for increased performance
Asthma and how medication allows for increased performance ASTHMA AND HOW MEDICATION ALLOWS FOR INCREASED PERFORMANCE Asthma is a medical condition characterized by breathing difficulty that occurs when the air tubes leading to and inside the lungs become obstructed. Asthma negatively affects a person's ability to perform as it hinders the breathing capability and the amount of oxygen that can be taken in and distributed throughout the body. Proper medication allows an asthmatic to r...
Astrology
Astrology Have you ever wondered what astrology is? Astrology has been around for many years, but many people don�t understand what astrology is, who used astrology, and it�s connection with the zodiac. Many people don�t know this, but the actual term astrology comes from two words, which are �astra� and �logos�. (Weblinkers.com Enterprises, p.1) When people believe in astrology, what they believe is that the planets and stars directly or indirectly influence their lives ...
Arsenic
Arsenic Place In Periodic Table Phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi) form a group of four elements in Group 5A of the periodic table. They exhibit increasing metallic properties going down the group. Nitrogen (N), which heads the group, is a colorless, odorless, and tasteless gas. Phosphorus is a highly reactive nonmetal, arsenic and antimony are poisonous metalloids, and bismuth is a true metal. Because of the arrangement of the outer electrons in their atom...
Arthritis 2
Arthritis 2 Arthritis Exercise is very commonly prescribed for arthritis, but that's about as far as it all too frequently goes. In other words, doctors give patients too little detail or instruction, with few illustrations, and no precise direction. Yet many of the most troublesome and disabling aspects of both rheumatoid arthritis and osteo-arthritis are due to lack of exercise. A joint that is immobilized initiates a series of changes that result in total destruction ...
Arthritis, the hidden dissability
Arthritis, the hidden dissability Introduction There are more than 115 different types of arthritis. Some are very serious and hold the potential for severe disability and deformity, if left untreated. Others may generate only mild discomfort, which may be totally controlled with relative ease. Myths and misconceptions thrive everywhere. Despite the continued efforts of medical professionals, and The Arthritis Society, a large proportion of the population still believes that arthri...
Artifical intelligence
Artifical intelligence How Can Artificial Intelligence Help Us? Introductory Paragraph, including thesis statement I. Description of Artificial Intelligence A. Descriptions of AI 1. Definition of AI 2. Coined in 1956 B. How AI can be achieved 1. Specialized software 2. Specialized computer systems 3. Add-on applications C. How can we measure the ability to think 1. Relative brain-power 2. Usefulness of the application II. How AI is dev...
Artificial insemination
Artificial insemination Artificial Insemination Artificial insemination, test-tube fertilization, frozen storage of embryos and surrogate parenting. For many people, these new and often controversial procedures of artificial reproduction hold out a last hope for starting a family. What happens during the insemination process is your physician uses a syringe to inject sperm into the cervical canal right before or right on the day of ovulation. Since half of the sperm get lost in the cervi...
Archeology Glorified Grave Robing
Archeology Glorified Grave Robing Archeology Glorified Grave Robing Archeologists have toiled for years trying to piece together the puzzle of past civilizations. Archeology, however, can be classified as a form of glorified grave robbing, rather than a way to recreate and understand the ways of past societies. While the artifacts uncovered can be helpful in painting a picture of what the lives of past civilizations were like, the act of digging up such artifacts can be considered imm...