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anonymous

The Wrong Way to Win - 0 views

  • The Wrong Way to Win › Introduction to The Wrong Way to Win › Why Do Athletes Use Performance-enhancing Drugs? › Masking Pain and Managing Weight and Stress › Detecting Drugs Why Do Athletes Use Performance-enhancing Drugs?
  • An athlete may want to: Build mass and strength of muscles and/or bones Increase delivery of oxygen to exercising tissues Mask pain Stimulate the body Hide use of other drugs
  • Many drugs are banned outright in Olympic competitions. However, some drugs, such as cortisone and local anesthetics, are merely restricted because they have legitimate clinical uses. Athletes may also misuse drugs to reduce weight, relax, cope with stress or boost their own confidence. Whatever the reason, doping has many unsafe if not deadly side effects.
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  • Another method for improving oxygen concentration is blood doping -- infusing whole blood into an athlete. An athlete who infuses his own blood may cause infection or cardiovascular problems because of the increased blood volume (high blood pressure, blood clots, heart failure and stroke). An athlete who uses someone else's blood runs the risk of acquiring viral infections such as HIV/AIDS. These are huge risks for a result that can also be achieved by training at high altitudes.
  • In addition to taking drugs that build mass and strength, some athletes take drugs and engage in practices that increase the amount of oxygen in tissues. Endurance athletes, like cyclists or cross-country skiers, may use Erythropoietin (EPO). EPO can increase an athlete's oxygen supply by as much as seven to 10 percent. As mentioned earlier, EPO is extremely dangerous, if not deadly in some cases. The increased red cell density caused by EPO can thicken the blood. The thickened blood -- which is more like honey than water -- cannot flow through the blood vessels well. To pump the thickened blood, the heart must work harder. This increases the chances of heart attack and stroke.
  • Athletes looking to build mass may also abuse Human Growth Hormone (hGH). Excessive hGH levels increase muscle mass by stimulating protein synthesis, strengthen bones by stimulating bone growth and reduce body fat by stimulating the breakdown of fat cells. Use of hGH has become increasingly popular because it is difficult to detect. Side effects include overgrowth of hands, feet, and face (known as acromegaly), enlarged internal organs, especially heart, kidneys, tongue and liver and heart problems.
  • Athletes use anabolic steroids to increase muscle strength. Anabolic steroids, which can be injected or taken as pills, allow the athlete to train harder and longer at any given period. The possible and well-known side effects of anabolic steroid use include jaundice and liver damage, mood swings, depression and aggression. Men may also suffer from baldness, infertility and breast development. Females may grow excessive hair on the face and body and suffer from infertility. The substances Human Chorionic Gonadotropin (hCG), Luteinizing Hormone (LH) may also produce the same side effects.
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    use it
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    Use this site for information
anonymous

Howstuffworks "How Performance-Enhancing Drugs Work" - 0 views

  • Every two years as the Olympic Games begin, we hear about athletes using or at least being tested for performance-enhancing drugs. Every time the Tour de France rolls around, there's talk of possible doping. Sometimes, competitors raise the question when one athlete does particularly well. Other times, tests catch athletes with drugs in their systems. The practice of using artificial substances or methods to enhance athletic performance is called doping. Doping has become such a great concern that the United States formed an Anti-Doping Agency.
  • Why Some Athletes Use DrugsAthletes face enormous pressure to excel in competition. They also know that winning can reap them more than a gold medal. A star athlete can earn a lot of money and a lot of fame, and athletes only have a short time to do their best work. Athletes know that training is the best path to victory, but they also get the message that some drugs and other practices can boost their efforts and give them a shortcut, even as they risk their health and their athletic careers.
  • As far back as ancient Greece, athletes have often been willing to take any preparation that would improve their performance. But it appears that drug use increased in the 1960s. One well-publicized incident happened at the Seoul Olympics in 1988 when sprinter Ben Johnson tested positive for anabolic steroids and was stripped of his gold medal. Athletes may also misuse drugs to relax, cope with stress or boost their own confidence. Athletes may have several reasons for using performance-enhancing drugs. An athlete may want to: Build mass and strength of muscles and/or bones Increase delivery of oxygen to exercising tissues Mask pain Stimulate the body Relax Reduce weight Hide use of other drugs
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  • Building Mass and Strength Mass- and strength-enhancing drugs used by athletes include: Anabolic steroids Beta-2 agonists Human chorionic gonadotropin (hCG) Luteinizing hormone (LH) Human growth hormone (hGH) Insulin-like growth factor (IGF-1) Insulin
  • A steroid is a chemical substance derived from cholesterol.
  • he body has several major steroid hormones -- cortisol and testosterone in the male, estrogen and progesterone in the female. Catabolic steroids break down tissue, and anabolic steroids build up tissue. Anabolic steroids build muscle and bone mass primarily by stimulating the muscle and bone cells to make new protein.
  • Athletes use anabolic steroids because they increase muscle strength by encouraging new muscle growth. Anabolic steroids are similar in structure to the male sex hormone, testosterone, so they enhance male reproductive and secondary sex characteristics (testicle development, hair growth, thickening of the vocal cords). They allow the athlete to train harder and longer at any given period.
  • Anabolic steroids are mostly testosterone (male sex hormone) and its derivatives. Examples of anabolic steroids include: Testosterone Dihydrotestosterone Androstenedione (Andro) Dehydroepiandrosterone (DHEA) Clostebol Nandrolone
  • hese substances can be injected or taken as pills. Anabolic steroids have a number of possible and well-known side effects, including: Jaundice and liver damage because these substances are normally broken down in the liver Mood swings, depression and aggression because they act on various centers of the brain In males, the excessive concentrations interfere with normal sexual function and cause: Baldness Infertility Breast development
  • In females, the excessive concentrations cause male characteristics to develop and interfere with normal female functions. The drugs can: Stimulate hair growth on the face and body Suppress or interfere with menstrual cycle, possibly leading to infertility Thicken the vocal cords, which causes the voice to deepen, possibly permanently If pregnant, interfere with the developing fetus
Deepankar Sinha

Army Special Weapon Facilities - 0 views

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    weapon of mass destruction
Minjie Kim

Behaviorism, John B. Watson, Social Control, Modern Psychology, Governments, and Denial... - 0 views

  • the subject matter of human psychology is the behavior of the human being
  • claims that consciousness is neither a definite nor a usable concept.
  • belief in the existence of consciousness goes back to the ancient days of superstition and magic
    • Minjie Kim
       
      isn't he just saying here that the consciousness is something that doesn't exist, or else is something that's there, but not exactly present, we can't control it nor are we completely aware of it.
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  • The great mass of people even today has not yet progressed very far away from savagery - it wants to believe in magic
    • Minjie Kim
       
      ... true, but how could a "savage"know of anything like this? of course he said "the great mass of people" which implies that he's... better than the average person.... isn't acknowledging your knowledge of psychology , and UNDERSTANDING of it basically being conceited? (does that mean I am?)
  • Almost every era has its new magic, black or white, and its new magician
Sara Espinosa

List of - Biggest Cities in the World, Highest Mountains, Deepest Spot in the Ocean, Lo... - 0 views

  • COUNTRY POPULATION (smallest) (February, 2006 numbers) Vatican City 920
  • COUNTRY POPULATION (largest) (February, 2006 numbers) China 1,306,313,800
  • OCEANS OF THE WORLD (by size) Pacific (155,557,000 sq km)
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  • LARGEST COUNTRIES (by land mass)
  • Russia 17,075,400 sq km, (6,592,846 sq miles)
  • OCEANS' GREATEST DEPTHS Mariana Trench, Pacific Ocean 35,827 ft
  • 10) LARGEST USA CITIES! (By Population) Numbers shown are the population within the recognized city limits, and do not include people living in the immediate surrounding area outside of the established border of the city (often called the metro). For those numbers, visit this page New York City, NY 8.09 million
  • DEEPEST OCEANS & SEAS
  • SMALLEST COUNTRIES (by land mass)
  • Pacific Ocean (35,827 ft) (10,924 meters)
  • Vatican City 0.44 sq km, (0.17 sq miles)
  • OLDEST COUNTRIES
  • San Marino (301 AD)
  • LARGEST CITIES ON THE PLANET! Numbers shown are the population within the recognized city limits, and do not include people living in the immediate surrounding area outside of the established border of the city. For the largest metropolitan areas refer to the list below this one. Revised (10/01/04) Shanghai, China 13.3 million
  • MAJOR SEAS (by size) locator map here South China (2,974,600 sq km)
  • YOUNGEST COUNTRIES Montenegro (July, 2006)
  • RICHEST COUNTRIES (GNP in USA Dollars) Luxembourg ($45,360)
  • MAJOR ISLANDS (by size) locator map here Australia, (7,617.930 sq km) is widely considered part of a continental landmass, not officially an island. But without doubt it is the largest island on the planet, and when combined with Oceania, the smallest continent on Earth.
  • POOREST COUNTRIES (GNP in USA Dollars) Mozambique ($80)
  • LARGEST METRO AREAS IN THE WORLD Numbers shown are the population within the immediate surrounding area of the established border of the city, and also include the city limit population figures. Revised (09/05) Toyko, Japan 31.2 million
  • COUNTRIES WITH MOST LAND BORDERS
  • China (14)
  • MAJOR RIVERS (By Length) Nile, Africa (6,825 km)
  • MAJOR LAKES (By Size) Caspian Sea, Asia-Europe (371,000 sq km)
  • TOP 10 TALLEST MOUNTAINS Mount Everest 8850m (29035ft) Nepal/China
  • DEEPEST LAKES (By Greatest Depth) Baikal, Russian Fed. (5,315 ft)
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    world info page
Janina Jose

Kids Search - powered by EBSCOhost: France and It's Celebrations - 0 views

  • Section: Festival The start of the New Year has been celebrated in China for more than 3,000 years. New Year was a time when the farmers gave thanks for the harvest and prayed to the gods for a good harvest in the coming year. This was the one period in the busy farming year when there was time to have a celebration and when the family could get together, relax, and be merry. Chinese New Year begins with a New Moon. The Lunar Year is calculated from the time it takes for the Moon to travel around the Earth, while the Western (Gregorian) calendar is based on the time it takes for the Earth to circle the Sun. The orbits of the Moon bear no relation to the time it takes for the Earth to go around the Sun, which is why the Chinese Lunar New Year is celebrated on a different date each year. In China the New Year was renamed the Spring Festival, in 1911, when the Western calendar was officially accepted in China. However, it is still commonly known around the world as the Chinese New Year. Chinese years are named after one of twelve animals. These have been used in the same order to name the years since the sixth century A.D. Each animal is said to have its own personality and emotions, which are present in people born within its year. ~~~~~~~~By Sarah Moyse This article is copyrighted. All rights reserved.Source: Chinese New Year (0-7613-0374-X)
  • Holidays are very important to the French. The French begin the year with a celebration of the Jour de l'An, which is New Year's Day. They greet each other by saying "Bonne Annee!" (Happy New Year). On January 6th there is la Fete des Rois (the Festival of the Three Kings), where people have a King's Cake. Whoever finds the special toy that has been baked into the cake gets to be king or queen for the day. In February, the French celebrate la Saint-Valentin or Valentine's Day by giving, valentines and chocolates. Also the French mark the start of Lent (a religious time when people fast) with Mardi Gras celebrations. On the 1st of April people play tricks on each other and say "Poisson d'avril!" which means "April fish!" People have little paper fishes that they cut out and try to stick on the backs of their friends that day. Easter is an important holiday in France. On the morning of Easter Sunday, most French people go to church. Afterwards, they carry home candles that have been blessed by priests. For Easter, which is called Le Pacques, omelettes, (an egg dish) are usually eaten for breakfast. People also give each other chocolate eggs and chocolate bunnies.
  • Holidays are very important to the French. The French begin the year with a celebration of the Jour de l'An, which is New Year's Day. They greet each other by saying "Bonne Annee!" (Happy New Year). On January 6th there is la Fete des Rois (the Festival of the Three Kings), where people have a King's Cake. Whoever finds the special toy that has been baked into the cake gets to be king or queen for the day. In February, the French celebrate la Saint-Valentin or Valentine's Day by giving, valentines and chocolates. Also the French mark the start of Lent (a religious time when people fast) with Mardi Gras celebrations. On the 1st of April people play tricks on each other and say "Poisson d'avril!" which means "April fish!" People have little paper fishes that they cut out and try to stick on the backs of their friends that day.
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  • Easter is an important holiday in France. On the morning of Easter Sunday, most French people go to church. Afterwards, they carry home candles that have been blessed by priests. For Easter, which is called Le Pacques, omelettes, (an egg dish) are usually eaten for breakfast. People also give each other chocolate eggs and chocolate bunnies. May 1st is May Day and French people wear corsages made of flowers like the lily-of-valley, which they also give to friends for good luck. During the summer months, there is the Tour de France, which is a bicycle race. The 14th of July is France's Independence Day, called Bastille Day. There are parades and fireworks, and people decorate their houses and celebrate all day. Christmas is a favorite holiday in France for the young and old. On Christmas Eve, families often attend midnight mass. After church, they return home for a big dinner called le reveillon. Dinner often consists of such foods like soup, turkey, goose, and oysters. A popular dessert at Christmas time is buche de Noel, a cake filled with chocolate and rolled into the shape of a log. The cake represents the Yule log that burns in the fireplaces of the French people during Christmas.
Tucker Haydon

Emu info. - 0 views

shared by Tucker Haydon on 05 Dec 08 - Cached
  • largest bird native to Australia
  • second-largest extant bird in the world by height
  • over most of mainland Australia, although it avoids heavily populated areas, dense forest and arid areas
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  • 2 m (6.5 ft) in height
  • can sprint at 50 km/h (30 mph) for some distance at a time.
  • opportunistically nomadic
  • plants and insects.
  • 30 and 60 kilograms (66–132 pounds).
  • three toes
  • one of an average of 11 (and as many as 20) very large, thick-shelled, dark-green eggs. The eggs are on average 134 x 89 millimeters (5.3 x 3.5 inches) and weigh between 700 and 900 grams (1.5–2 pounds),[21] which is roughly equivalent to 10–12 chicken eggs in volume and weight.
Kate L

Grolier Multimedia Encyclopedia - 0 views

  • basic laws of physics dictate that energy is conserved and can only be changed from one form to another or into matter.
  • Fuel, on the other hand, is the accumulation of matter and therefore represents a store of energy.
  • released in the form of heat when the fuel is burned in chemical or nuclear reactions
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  • cannot be reversed to regenerate the original fuel mass
  • a fuel problem does exist
  • If the supply of fuel is finite, not only will there be no energy supply when the fuel is exhausted
    • Kate L
       
      Finite means: a form of a verb that can occur as the head of a sentence. In Sam wants to leave, wants is finite, leave is non-finite.
  • all other processes that depend on it will cease
  • Several factors combine to make the problem an urgent one
  • World population
  • demand for energy will also increase
  • coal, oil (petroleum), natural gas, uranium, and fuel wood—is limited and insufficient to sustain rapid rates of development.
  • debate about the exact length of time available before the effects of a worldwide shortage become apparent
  • shortage will occur.
  • geothermal energy, hydroelectric power, peat, ocean thermal energy, solar energy, tidal energy, wind power, and fuel wood.
  • replenish themselves naturally in a relatively short time and will therefore always be available.
  • Renewable energy resources
  • indirectly responsible for many other renewable energy sources.
  • ocean currents and winds are results of the uneven distribution of solar radiation over the Earth's surface
  • winds in turn produce waves whose energy can be utilized
  • windmills and wind power
  • ocean thermal energy, solar heating of the upper layers of the ocean produces temperature gradients that can be harnessed to generate electricity
  • Sun also powers the hydrologic cycle, in which ocean water is evaporated, transported over the continents, and precipitated as rain or snow to form rivers
  • flow energy produces hydroelectric power.
  • energy locked in such renewable fuel sources as wood and peat is derived from the Sun by the process of photosynthesis.
  • renewable energy source is geothermal energy
  • arises through the leakage of heat from the Earth's interior to the surface
  • over the entire surface of the Earth at a very low average rate, leakage is much higher in certain locations.
  • Yellowstone National Park
  • Iceland, Italy, and New Zealand.
  • possible to tap the heat and use it for human purposes.
  • Nonrenewable resources originate from two processes: (1) photosynthesis, which occurred many millions of years ago, followed by the fossilization of the plant and animal life that resulted, and (2) the formation of the Earth itself.
  • fossil fuels—coal, oil (petroleum), and natural gas;
  • produced the fuels for nuclear energy, such as uranium for fission and lighter elements for fusion
  • irreplaceable fuels represent an energy capital that must be invested wisely.
  • A cleaner-burning fuel than oil, natural gas seemed to be in abundant supply at the turn of the 21st century and, with the greatly enlarged network of gas pipelines, was rapidly growing in use.
  • nearly total dependence on fossil fuels and hydroelectricity ensures that efforts to solve energy problems by switching to alternative sources will have to overcome a great deal of inertia, both economic and psychological.
  • sources as solar power, wind power, and synthetic fuels suffer from the serious drawback that few major installations now exist.
  • handicapped by the engineering problems of converting the energy to a form useful to human beings.
  • solar energy reaches the top of the atmosphere in amounts 10,000 times greater than all human production of energy, it reaches the Earth's surface at rates of only about 80 to 250 W/m2, and considerably less on cloudy days.
  • arge-scale system based on solar-collector panels will be physically huge, causing problems of maintenance and land use
  • Wind power, wave power, and ocean-thermal-generation sources suffer from similar difficulties
    • Kate L
       
      Even though there are some difficulties with working towards the alternative fuels, it may prove to be more efficient for smaller things (heat and power to small communities or single buildings) in the long run
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    Energy Problem
robert meeker

The History Of Army Skydiving « Sky Diving Weblog - 0 views

    • robert meeker
       
      oka site
    • robert meeker
       
      high light at botim of page
  • Today we enjoy skydiving as a breathtaking leisure sport, but its origins lie within the army.  The history books are chock full of dates and occurrences where skydiving has played an important part.
  • Army skydiving had a big role to play in the Second World War, when paratroopers dropped into enemy zones to fight
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  • Skydiving is a natural sport to develop from army training.
  • many expert skydivers found their passion after joining the army.
  • So it seems army skydiving has gone from being a skill developed to get into enemy territory quickly and efficiently, to a spectator sport appreciated by the masses.
Kristine Abiera

How did Christmas start? How does the West celebrate Christmas? The real meaning of Chr... - 0 views

    • Kristine Abiera
       
      Gold, Frankincense and Myrrh
    • Kristine Abiera
       
      santa clause father of christmas
    • Kristine Abiera
       
      christ=messiah mass=religious festival
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