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U S Department National Cancer Institute
1,304 words... tumors that are too big to be surgically removed and to help destroy any cancer cells that may remain after surgery. Chemotherapy is 77 % effective in killing small cases of cancer (United States Cancer Patient Survival). If a cancer tumor can be located to a specific region, surgery is used to remove the tissue the cancer has infected. Surgery is usually recommended for patients who have small cancer cells scattered throughout the body, and patients who have a single organ that is infected ...
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Electromagnetic Radiation Infrared Radiation
1,377 wordsYou might remember the heroic role that newly-invented radar played in the Second World War. People hailed it then as "Our Miracle Ally." But even in its earliest years, as it was helping win the war, radar proved to be more than an expert enemy locator. Radar technicians, doodling away in their idle moments, found that they could focus a radar beam on a marshmallow and toast it. They also popped popcorn with it. Such was the beginning of microwave cooking. The very same energy that warned the B...
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Ozone Depletion Ozone Layer
1,344 wordsThe Earths ozone layer shields all life on the planet from the suns harmful radiation and is extremely important to all life on the planet, but we as a human race are now faced with a very important question. This question is, Is the Earths ozone layer really depleting, and if it is, is it really a threat? There is evidence that less protection from ultraviolet rays will, over time, lead to increased amounts skin cancer, cataract, and even crop damage. With cooperation with over 140 oth countrie...
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Ozone Depletion Ozone Layer
5,350 wordsFrom: (Robert Parson) Newsgroups: sci. environment, sci. answers, news. answers Subject: Ozone Depletion FAQ Part I: Introduction to the Ozone Layer Organization: University of Colorado, Boulder Expires: Sun, 1 Feb 1998 00: 00: 00 GMT Message-ID: 67 rss$ Summary: This is the first of four files dealing with stratospheric ozone depletion. It provides scientific background for the more detailed questions in the other three parts. Keywords: ozone layer cfc stratosphere depletion These files are pos...
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Speed Of Light Time Of Day
1,333 wordsOur view of the sky at night is possible because of the emission and reflection of light. 'Light' is the better-known term for the electromagnetic spectrum, which includes waves in the visible, ultra-violet, infra-red, microwave, radio, X-ray and gamma-ray regions. The scale of the spectrum is so large that no region is distinct, several overlap each other. Each of these regions in the electromagnetic spectrum represent transverse waves, travelling as electrical and magnetic fields which interac...
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Alpha Particles Nuclear Physics
758 wordsErnest Rutherford was born in New Zealand in 1871 as one of 12 children. It was Rutherford who first "split" an atom and who discovered the atomic "nucleus", a name that he invented. For this he is regarded as the greatest experimental physicist of his time. Rutherford was one of the first and most important researchers in nuclear physics. Soon after the discovery of radioactivity in 1986 by the French physicist Antoine Henri Becquerel, Rutherford discovered the three different types of radiatio...
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Study Of The Nuclear Disaster Chernobyl
1,164 wordsThe worst accident in the history of this nuclear power generation occurred on the morning of April 26, 1986. It was at the Chernobyl (Ukraine) nuclear power station in the Soviet Union. At 1: 32 AM Lieutenant Colonel Leonid Telyatnikov received a telephone call and was told that there was a fire at the nuclear power plant. There were many reasons their plant had backfired. These reasons included human error and poor plant design due to the cold war. Chernobyl was located in the former Soviet Un...
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Big Bang Theory One Of The Most Important
1,509 wordsThe wide extent of the distribution of galaxies is evaluated by astrophysicists as one of the most important legacies from the first phases of the universe to have come down to the present day. It is therefore possible to refer to the information on the distribution and location of the galaxies as "a window opening onto the history of the universe. " In their research that lasted several years, two independent teams, composed of British, Australian and American scientists, produced a three-dimen...
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God Created The Universe With A Big Bang
1,976 wordsGod Created the Universe with a Big Bang Where did it all come from? many people before us have asked themselves. Scientists of Cosmology, who study large scale structures and the origin of the universe, have struggled with this very question and have developed several theories to answer just that. One such theory is called the Big Bang. It has become one of the most widely accepted theories of our time because in several ways, it provides tangible evidence to explain the origin of the universe....
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Electromagnetic Radiation Brain Cancer
1,646 wordsWhat Causes Cell Phone Radiation and How Does it Effect Your Body? What is so popular with young teenagers today? Cell phones. Walking around on campus to walking around at the mall with your cell phone may seem fashionable and trendy, but did you now that it might be causing you to get a cancer? Ninety percent of cell phone holders do not realize it and it should be something everyone should be aware of. It may seem a bit unusually how a cell phone can cause a child or an adult to get cancer, b...
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Chernobyl Accident Radiation Sickness
1,643 wordsThe Chernobyl The Chernobyl Accident The Chernobyl Accident negatively affected not only the people of the Ukraine and surrounding countries; it also affected the economy, health and the environment. The Disaster Occurs On April 26 th, 1986, something horribly went wrong with reactor four at the power plant in Chernobyl. This accident has so far been the worst one in the world s history of power plants. This accident was caused partly by the operator and partly by faults in the reactor construct...
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Cell Lung Cancer Small Cell Lung
3,371 wordsLung cancer is not just one disease but rather a group of diseases. All forms of cancer cause cells in the body to change and grow out of control. Most types of cancer cells form a lump or mass called a tumor. Cells from the tumor can break away and travel to other parts of the body where they can continue to grow. This spreading process is called metastasis. When cancer spreads, it is still named after the part of the body where it started. For example, if breast cancer spreads to the lungs, it...
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Nuclear Weapon Nuclear Reactions
5,004 wordsYou Nuclear Energy Nuclear Energy You are watching the control panels and gages for rector two. Sitting comely you think about how easy your job is. It is a joke! All day you sit around and watch the gages for reactor number two just to make sure they maintain their settings. You dont even need to look at the gages either because a computer automatically regulates them without you. Life is so good. Suddenly all the sirens go of and the gages and displays spin wildly in every direction. The groun...
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Human Genome Project Dna Sequences
5,742 wordsLife as we know it is specified by genomes. Every organism possess a genome that contains the biological information needed to construct and maintain a living example of that organism. Most genomes, including those for all cellular lifeforms, are made of DNA (deoxyribonucleic acid) but a few viruses have RNA (ribonucleic acid) genomes. DNA and RNA are polymeric molecules made up of linear, unbranched chains of monomeric substances called nucleotides. Each nucleotide has three parts: a sugar, a p...
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Big Bang Theory Hydrogen Ions
3,468 wordsLuminosity is the amount of light that is radiated from a star. White light is the composition of all colors. In elements, the energy discharge can be displayed as light. Just by looking at the colors that are discharged, one may precisely identify the element. In understanding the universe, the Doppler effect is one of the most important tools. The Doppler effect is a shift in frequency due to a moving source. Skipping a rock on water would be an example of this effect. The circles would be off...
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Types Of Cancer Nausea Vomiting
957 wordsDuring a shower one-day, you notice a lump that was not otherwise there. The next day you see a doctor. The lump you have identified is diagnosed as cancer. Now you need to figure out what to do. There is no absolute cure for cancer, but there are different ways to treat it. Doctors use according methods like radiation, chemotherapy or drugs to treat various types of cancer. Another way of treating cancer is with alternative forms of medicine by using acupuncture and natural herbal remedies. The...
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Uv Radiation Ozone Depletion
993 wordsOur Radiant Planet- Depletion of the Ozone Layer Ozone is a relatively unstable form of molecular oxygen containing three oxygen atoms produced when upper-atmosphere oxygen molecules are split by ultra violet light. Stratospheric ozone is found in a broad band, extending generally from 15 to 35 km above the earth. Although the ozone layer is surprisingly thin, it acts as a protective shield to the earth, as it filters out most of the harmful solar ultraviolet radiation (in particular UV-B) that ...
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Ozone Depletion Ozone Layer
1,352 wordsThe Earth? s ozone layer shields all life on the planet from the sun? s harmful radiation and is extremely important to all life on the planet, but we as a human race are now faced with a very important question. This question is, ? Is the Earth? s ozone layer really depleting, and if it is, is it really a threat? ? There is evidence that less protection from ultraviolet rays will, over time, lead to increased amounts skin cancer, cataract, and even crop damage. With cooperation with over 140 ot...
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Ozone Layer Ultraviolet Radiation
1,027 wordsOzone is an important molecule in maintaining the homeostasis in the environment. Ozone, the molecule O 3, makes a layer in the stratosphere, situated 10 to 15 kilometers from the earths surface. The dioxide molecule, O 2 and Oxygen atom O, collide with each other result in the formation of Ozone, O 3. In this reaction, the molecule O 3 contains an excess of energy. Once the molecule is formed, it is not stable enough to last long. The energy-rich O 3 molecules discards the excess energy by coll...
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American Cancer Society Types Of Cancer
2,919 wordsCancer is a major killer of people all around the globe. We do not have a definite cure, but the amount of research done on this one disease costs on the average of $ 1. 2 billion dollars annually, and $ 20 billion annually in care of cancer patients. What is Cancer? Cancer is a broad ranging term that is used by many people, including medical professionals such as doctors. Cancer, in its most fatal and aggressive form, is of a larger class of diseases known as neoplasms. There are two forms of ...
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