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排序方式: 共有775条查询结果,搜索用时 15 毫秒
721.
722.
Feroz Khan M Umarajeswari S Godwin Wesley S 《Journal of environmental monitoring : JEM》2011,13(3):553-562
Activities of 21?Po and 21?Pb in whole-body and in various tissues of brachyuran crabs collected along the Kudankulam coast were studied. A non-uniform distribution of these radionuclides was observed between the various tissues. Of all the tissues, 21?Po and 21?Pb were found to accumulate more in the hepatopancreas and intestine. Among the crabs studied, Charybdis lucifera registered higher 21?Po and 21?Pb activity. Muscle tissue in all the species registered lower activity. The 21?Po/21?Pb activity ratio was found to be greater than unity. The biological concentration factor for organs varied between ~ 10? and 10? for 21?Po and ~102 and 10? for 21?Pb. A significant variation in the accumulation of 21?Po and 21?Pb was noted between species and between seasons (p < 0.05). The mean whole-body internal dose ranged from 1.42 to 6.86 μGy h?1 for 21?Po and from 3.0 × 10?3 to 8.0 × 10?3 μGy h?1 for 21?Pb. The external dose for 21?Po and 21?Pb was 2.41 × 10?? to 5.76 × 10?? μGy h?1 and 4.14 × 10?? to 8.26 × 10?? μGy h?1, respectively. The activity levels recorded are in agreement with values recorded in related organisms in other parts of the world. The total committed effective dose due to the intake of both radionuclides ranged from 80.3 to 871.7 μSv y?1. The median dose calculated due to 21?Po and 21?Pb in certain crabs in Kudankulam is less and would not pose any significant radiological impact on health or a cancer risk to the public, and the seafood is considered safe for human consumption. 相似文献
723.
Khan Irfan Hou Fujun 《Environmental science and pollution research international》2021,28(5):5049-5062
Environmental Science and Pollution Research - We examine the impact of energy consumption and tourism growth on the ecological footprints and economic growth of 38 International Energy Agency... 相似文献
724.
Khalid Foqia Hashmi Muhammad Zaffar Jamil Nadia Qadir Abdul Ali Muhammad Ishtiaq 《Environmental science and pollution research international》2021,28(9):10474-10487
Environmental Science and Pollution Research - Electronic waste is termed as e-waste and on recycling it produces environmental pollution. Among these e-waste pollutants, polychlorinated biphenyls... 相似文献
725.
Khan Ali Ahmad Adeel Shahid Azeem Muhammad Iqbal Naeem 《Environmental science and pollution research international》2021,28(37):51632-51641
Environmental Science and Pollution Research - Revival of natural colorants in textile dyeing is one of the important strategies to reduce synthetic chemical-based environmental pollution. The... 相似文献
726.
Khan Faizal Krishnaraj Srinivasamoorthy Raja Prakash Selvaraj Gopinath Cheelil Rabina 《Environmental science and pollution research international》2021,28(15):18567-18588
Environmental Science and Pollution Research - The present study area falls beside the coastal zone of Tamil Nadu, and Puducherry is characterized by varied geological formations that mostly... 相似文献
727.
Verma Sarika Mili Medha Dhangar Manish Jagatheesan Krishnasamy Paul Sriparna Bajpai Harsh Vedanti Nimisha Mallik Jyotirmoy Khan Mohammed Akram Bhargaw Hari Narayan Hashmi Sayed Azhar Rasheed Srivastava Avanish Kumar 《Environmental science and pollution research international》2021,28(46):64929-64950
Environmental Science and Pollution Research - The materials used in electrical and electronic applications have great importance and broader applications, but they have severe electromagnetic... 相似文献
728.
Khan Muhammad Saiful Islam Lee Na Ri Ahn Jaehwan Kim Ji Young Kim Jong Hoon Kwon Ki Hyun Kim Yun-Ji 《Environmental science and pollution research international》2021,28(7):8296-8309
Environmental Science and Pollution Research - Pesticides are emergent toxins often identified in aquatic environments. In the present study, microplasma was employed to reduce the pesticide... 相似文献
729.
Paola Russo Paul R. Amyotte Faisal I. Khan Almerinda Di Benedetto 《Journal of Loss Prevention in the Process Industries》2013,26(6):1634-1638
The effect of size on the severity of explosions involving flocculent materials has been simulated by means of a model previously developed for spherical particles and here extended to the cylindrical geometry of flock. The model consists of the identification of the regime (internal and external heating, pyrolysis/devolatilization reaction, and volatiles combustion) controlling the explosion by the evaluation of dimensionless numbers (Bi, Da, Th and Pc) and then of the estimation of the deflagration index as a function of flocculent size. The model has been validated by means of explosion data of polyamide 6.6 (nylon) at varying diameter and length. The comparison between model and experimental data show a fairly good agreement. 相似文献
730.
Ming Yang Faisal I. Khan Rehan Sadiq Paul Amyotte 《Process Safety and Environmental Protection》2013,91(3):172-182
Environmental decision-making in offshore oil and gas (OOG) operations can be extremely complex due to conflicting objectives or criteria, availability of vague and uncertain information, and interdependency among multiple decision-makers. Most existing studies ignore conflicting preferences and strategic interactions among decision-makers. This paper presents a game theoretical approach to solve multi-criteria conflict resolution problem under constrained and uncertain environments. Uncertainties in the quantification of imprecise data are expressed using rough numbers. A multi-criteria game is developed to model a decision problem in which three groups of decision-makers (i.e., operators, regulators and service engineers) are involved. This game is solved using the generalized maximin solution concept. With the solution (i.e., optimal weights of the criteria), the rough numbers can be aggregated to an expected payoff for each alternative. Finally, the weights of upper and lower limits of a rough number are employed to transform the expected payoff into a crisp score, based on which all alternatives are ranked to identify the best one. A numerical example is outlined to demonstrate the application of the proposed method to the selection of management scenarios of drilling wastes. 相似文献