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Artificial radioactive affliction to Earth’s environment began with nuclear weapon testing during World War II, but did not become a prominent topic of public discussion until the 1980s. The Journal of Environmental Radioactivity (JER) was the first collection of literature on the subject, and its inception was not until 1984. [2]
The distribution coefficient K d is the ratio of the soil's radioactivity (Bq g −1) to that of the soil water (Bq ml −1). If the radioactivity is tightly bonded to by the minerals in the soil then less radioactivity can be absorbed by crops and grass growing in the soil. Cs-137 K d = 1000; Pu-239 K d = 10000 to 100000; Sr-90 K d = 80 to 150 ...
Surface contamination may either be fixed or "free". In the case of fixed contamination, the radioactive material cannot by definition be spread, but its radiation is still measurable. In the case of free contamination, there is the hazard of contamination spread to other surfaces such as skin or clothing, or entrainment in the air.
It is suggested that India's growing population is the primary cause of India's environmental degradation. Empirical evidence from countries such as Japan, England and Singapore, each with population density similar to or higher than that of India, yet each enjoying environmental quality vastly superior to India's, suggests population density ...
BARC is a multi-disciplinary research centre with extensive infrastructure for advanced research and development covering the entire spectrum of nuclear science, chemical engineering, material sciences and metallurgy, electronic instrumentation, biology and medicine, supercomputing, high-energy physics and plasma physics and associated research for Indian nuclear programme and related areas.
By the end of the reign of Aurangzeb in the early 1700s, the common language around Delhi began to be referred to as Zaban-e-Urdu, [33] a name derived from the Turkic word ordu (army) or orda and is said to have arisen as the "language of the camp", or "Zaban-i-Ordu" means "Language of High camps" [32] or natively "Lashkari Zaban" means ...
Here is a list of radioisotopes formed by the action of cosmic rays; the list also contains the production mode of the isotope. [4] Most cosmogenic nuclides are formed in the atmosphere, but some are formed in situ in soil and rock exposed to cosmic rays, notably calcium-41 in the table below.
Standard Hindi (also High Hindi, Manak Hindi) is the language of the government and is one of the official languages of India, Standard Urdu is the state language and national language of Pakistan, Dakhini is the historical literary dialect of the Deccan region, and Rekhta the "mixed" Hindustani of medieval poetry. [12]