Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Radiation:
High doses of radiation are very harmful for human health. Do you know about the disaster ceated by the first atomic bombs which were exploded on two cities of Japan, Hiroshima and Nagasaki in 1945? They killed thousands of people and injured many more badly. The effects of exposure to intense radiation took years to appear as burns or cancer in human beings. After a couple of decades, the effect on babies born to mothers who were exposed to big doses of radiation, began to show up. Radiation is an important component of man's environment. We receive some radioactivity all the time from cosmic rays, from terrestrial and atmospheric environment and also from trace amounts of radioactive potassium, strontium and carbon present in the tissues of the body. At altitudes above 20 km, cosmic radiation is much stronger. Although, we do not find any immediate ill effects of this natural radiation on our health, one cannot be sure that they do not have long term effects.
Then there are man-made sources of radiation in modern era which have become an indispensable component of our life. Diagnostic medical and dental x-rays affect patients, doctors and technicians. T.V. sets, radioactive dial watches and luminous markers etc. add small amounts of radiation to man's environment, while nuclear power plant waste, if not disposed of properly, is a great risk to human health. Major hazards of radiation are testing of atomic and nuclear bombs. Radiation, like x-rays, gamma rays, alpha and beta particles penetrate the body tissues and injure them.
The extent of damage is related to the total dose of exposure. Higher doses affect immediately and are fatal. They affect the blood cells and soften the muscles. Acute radiation sickness is a well defined disease. Somewhat lower doses show delayed effects. They cause some cells to divide more rapidly than usual. 'Ibis leads to various forms of cancer like Leukaemia or other malignant tumors. Unfortunately, some of the damages are not recognisable within the life span of the exposed person, these will become manifest in the coming generations.
Explain Abductor Muscles Abductor muscle is a muscle that serves to draw a part out, or from the median line (as the abductor oculi, which draws the eye outward). Abductor m
Why does marble rarely contain fossils? This is due to of the way that it is formed. When you have a rock that is formed bymetamorphosis then it has been created by heat and pres
Dissolution and dilution : Water soluble1 miscible chemical wastes which are harmless in high dilution may be run into the drainage with plenty of water. It may be noted that al
Define Creatinine in Urine Creatinine: It is an end-product of protein metabolism, an anhydride of creatine, found in the blood and urine that can be used to help assess if the
Explain Carbamoyl Phosphate Synthetase (CPSI) ? In the first step, the mitochondria1 enzyme Carbamoyl Phosphate Synthetase 1 converts the ammonia produced by glutamate dehydro
OBLIGATIONS OF THE TEACHERS AND THE HEAD OF THE INSTITUTION TOWARDS MAINTAINING LABORATORY SAFETY Safety in laboratory work is the collective responsibility of the Head of the
Scientific approach to problem solving: The scientific method and the features of scientific knowledge described above are in no way restricted to the domain of scientists alo
what is the significance?
Method of science: We have seen above that science is an enaeavour to understand nature and to mould it to satisfy human needs. In earlier units we have seen that, in this pr
models
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd