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291.
292.
Mohanty AK Sengupta D Das SK Saha SK Van KV 《Journal of environmental radioactivity》2004,75(1):15-33
A high natural background radiation area is reported for the Chhatrapur beach placer deposit of Orissa state, on the southeastern coast of India, due to the presence of radiogenic heavy minerals. The average activity concentrations of radioactive elements 232Th, 238U and 40K were measured by gamma-ray spectrometry using a HPGe detector, and found to be 2500 +/-1850, 230 +/- 140 and 120 +/- 35 Bq kg-1, respectively, for the bulk sand samples. The absorbed gamma dose rates in air due to the naturally occurring radionuclides varied from 375 to 5000 nGy h-1, with an average value of 1625 +/- 1200 nGy h-1. The external annual effective dose rate of the region ranged from 0.46 to 6.12 mSv y-1, with an average value of 1625 +/- 1200 mSv y-1. The absorbed gamma dose rate levels of Chhatrapur beach area were similar to the monazite sand-bearing high background radiation areas of southern and southwestern coastal tracts of India and other similar areas of the world. The major contributors to the enhanced level of radiation are monazite and zircon sands. 相似文献
293.
A field experiment has been conducted with two herbicides viz. oxadiazon [5-terbutyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2-one] and oxyfluorfen [2-chloro-1-(3-ethoxy-4-nitrophenyl)-4-(trifluoromethyl) benzene] at rates of 0.4 and 0.12 kg a.i. ha(-1), respectively, to investigate their effect on the growth and activities of phosphate solubilizing microorganisms in relation to availability of phosphorus as well as persistence of the herbicides in the rhizosphere soil of wetland rice (Oryza sativa L. variety IR-36). Application of herbicides stimulated the population and activities of phosphate solubilizing microorganisms and also the availability of phosphorus in the rhizosphere soil. Oxyfluorfen provided greater microbial stimulation than oxadiazon. Dissipation of oxyfluorfen and oxadiazon followed first order reaction kinetics with half-life (T(1/2)) of 8.8 and 12 days, respectively. Sixty days after application 0.5% and 3% of the applied oxadiazon and oxyfluorfen residues persisted, respectively, in the rhizosphere soil of rice. 相似文献
294.
Billah Md Masum Bhuiyan Md Khurshid Alam Islam Mohammad Ahsanul Das Jewel Hoque ATM Rafiqul 《Environmental science and pollution research international》2022,29(11):15347-15363
Environmental Science and Pollution Research - Coastal wetlands including salt marshes are among the most productive ecosystems on Earth. They are known for improving the quality of coastal water... 相似文献
295.
Karnatak Gunjan Das Basanta Kumar Sarkar Uttam Kumar Borah Simanku Roy Aparna Parida Pranay Lianthuamluaia Lianthuamluaia Das Archan Kanti Behera Bijay Kumar Pandit Arun Sahoo Amiya Kumar Bhattacharjya Birendra Kumar Chakraborty Sangeeta Mondal Kausik Chandra Purna 《Environmental science and pollution research international》2022,29(50):75431-75440
Environmental Science and Pollution Research - The rapid degradation, overexploitation, and encroachment of floodplain wetlands have led to considerable decline in fish diversity and production... 相似文献
296.
Das Manob Das Arijit Seikh Selim Pandey Rajiv 《Environmental science and pollution research international》2022,29(41):61561-61578
Environmental Science and Pollution Research - The well-being of the human society cannot be ensured and sustainable unless the flow of Ecosystem Services (ESs) would be matching with their... 相似文献
297.
Kulanthaivel Ponnusamy Soundara Balu Selvakumar Subburaj Das Arunava 《Environmental science and pollution research international》2022,29(44):66450-66461
Environmental Science and Pollution Research - A technique to produce bio-cementation in sandy soil using the microbially induced calcium carbonate precipitation (MICP) process and calcium ions... 相似文献
298.
Tantubay Kartik Das Piu Baskey Moni 《Environmental science and pollution research international》2022,29(12):17309-17318
Environmental Science and Pollution Research - Zinc chromite nanoparticles (NPs) and zinc chromite–reduced graphene oxide (ZnCr2O4-rGO) nanocomposite have been synthesized by the combined... 相似文献
299.
Das Sourav Kumar Shrivastava Sandeep 《Journal of Material Cycles and Waste Management》2022,24(4):1281-1294
Journal of Material Cycles and Waste Management - Enormous generation of construction and demolition (C&D) waste along with municipal solid waste (MSW) is required to managed properly for... 相似文献
300.
Arabinda Das Anirban Biswas Debendra Nath Guha Mazumder 《Environmental geochemistry and health》2018,40(6):2359-2369
Skin lesion is one of the important health hazards caused by high intake of arsenic through drinking water and diet, and the other hazards include several types of cancers (viz. skin, lung and urinary bladder), ischemic heart disease, hypertension, etc. Two most important biomarkers to measure arsenic intake in a human body are arsenic concentration in urine and hair. The primary interest of this paper is the association between skin lesion and arsenic concentration in hair for participants with chronic arsenic exposure from West Bengal, India, using bivariate regression model based on copula function. The result showed participants with high arsenic concentration in hair had higher incidence of developing skin lesion. Arsenic concentration in hair was significantly higher for the participants with an arsenic concentration in water?>?10 mg/L. 相似文献