Papers 1521-1530 of total 3876 found.
…plants of the ecosystem. (EPA, 2000) Global Warming may also affect photosynthetic microorganisms via ultra violet light rays. UV rays consist of a portion of the electromagnetic spectrum with wavelengths shorted than visible light. The sun produces UV…
Details: Words: 927 | Pages: 3.0 (approximately 235 words/page)
…. This bioelectrical effect in some way may stimulate bone cells and affect bone remodeling." In the early missions, X-ray densitometry was used to measure the weight-bearing bones pre & post flight. In the later Apollo, Skylab and Spacelab missions Photon absorptiometry…
Details: Words: 1393 | Pages: 5.0 (approximately 235 words/page)
Category: /History
…believed that the monarch should cultivate moral standards in order to set a good example –8. 8- Huang, Ray. A Macro History: China. New York: American History Heritage, 1990. References Bowra, CM. Classical Greece…
Details: Words: 1329 | Pages: 5.0 (approximately 235 words/page)
…as gamma rays and two or more neutrons, is released. Under certain conditions, the escaping neutrons strike and thus fission more of the surrounding uranium nuclei, which then emit more neutrons that split still more nuclei. This series of rapidly multiplying…
Details: Words: 1041 | Pages: 4.0 (approximately 235 words/page)
…an atmosphere crisis is because of human impact on the gases which make up our atmosphere. Our atmosphere, which is made up of four distinct layers blankets our planet and protects up in many way. One way it protects us if from the harmful rays the sun radiates…
Details: Words: 1171 | Pages: 4.0 (approximately 235 words/page)
…opened the electromagnetic spectrum, first using visible light and then radio, x-rays and gamma rays. Each new part of the spectrum provided us with dramatic new insights into the universe. Einstein predicted gravitational waves in 1916. They have…
Details: Words: 1265 | Pages: 5.0 (approximately 235 words/page)
…and kills the cancer cells. Chemo. is also used to kill cancer cells that have spread from the primary tumour. Radiation Radiation uses high-energy x-rays or gamma rays (radioactive atoms) to kill cancer cells and shrink tumours. Radiation can come…
Details: Words: 1427 | Pages: 5.0 (approximately 235 words/page)
…ultraviolet rays and the occurrence of skin cancer in humans. Some cancers caused by radiation are leukemia, along with cancers of the thyroid, breast, stomach, uterus, and bone. Consequently everyday diagnostic tools such as the X ray are used very carefully so…
Details: Words: 1513 | Pages: 6.0 (approximately 235 words/page)
…, and many doctors prefer this in many cases. When a patient receives radiation therapy, gamma rays are sent in to treat the region that the tumor is in. Patients usually receive five to eight weeks of treatments every day, but they don't have to stay…
Details: Words: 1548 | Pages: 6.0 (approximately 235 words/page)
…to a computer, that bounce off the prostate. Those echo's are looked at by the computer to show the picture of the prostate. The intravenous pylegram is a number of x-rays of the organs of the urinary tract. There is also a cystoscopy in which the doctor looks…
Details: Words: 1499 | Pages: 5.0 (approximately 235 words/page)