منابع مشابه
Effect of Gamma Irradiation on the Thermal Decomposition Behaviour and Electrical Resistivity of Some Indian Lignite and Bituminous Coals
It is known that irradiation of coal by high-energy and ionising gamma rays affects the structure of coal, as a result of which its physical and chemical properties are also likely to be and indeed are, affected or modified. Very little work has heen on this aspect of Indian coals, which are quite different from their foreign counterparts. From this point of view. over the past some years, the ...
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The Pliocene lignite hypothesis is an environmental hypothesis that has been proposed to explain the etiology of Balkan endemic nephropathy (BEN). Aqueous leaching experiments were conducted on a variety of coal samples in order to simulate groundwater leaching of organic compounds, and to further test the role of the Pliocene lignite hypothesis in the etiology of BEN. Experiments were performe...
متن کاملFluorine in Chinese Coals
Three hundred and five coal samples were taken from the main coal mines of twenty-six provinces, autonomous regions, and municipalities of China. The method of pyrohydrolysis was applied to measure the fluorine content in the samples, which exhibit logarithmic normal frequency distributions. The range of fluorine content in dry coal varies from 25 to 1230 mg/ kg with a geometric mean of 136 mg/...
متن کاملSurvival of Rhizobium phaseoli in Coal-Based Legume Inoculants.
The long-term survival of Rhizobium phaseoli strains 127K17, 127K26, and 127K35 in legume inoculants prepared with eight different coals (one strain and one coal per inoculant) was studied. The coals used were Pennsylvania anthracite, bituminous coals from Illinois, Pennsylvania, and Utah, lignite from North Dakota and Texas, and subbituminous coals from New Mexico and Wyoming; they ranged in p...
متن کاملArsenic concentrations in Chinese coals.
The arsenic concentrations in 297 coal samples were collected from the main coal-mines of 26 provinces in China were determined by molybdenum blue coloration method. These samples were collected from coals that vary widely in coal rank and coal-forming periods from the five main coal-bearing regions in China. Arsenic content in Chinese coals range between 0.24 to 71 mg/kg. The mean of the conce...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1921
ISSN: 0036-8733
DOI: 10.1038/scientificamerican04301921-344