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排序方式: 共有100条查询结果,搜索用时 31 毫秒
61.
Şener Fidan Fatma Kızılkaya Aydoğan Emel Uzal Niğmet 《Environmental science and pollution research international》2023,30(4):8853-8867
Environmental Science and Pollution Research - Due to the rise in clothing consumption per person and growing consumer awareness of environmental issues with products, the textile industry must... 相似文献
62.
El-Demerdash FM Yousef MI Elaswad FA 《Journal of environmental science and health. Part. B》2006,41(5):731-746
Deleterious effects of chromium (VI) compounds are diversified affecting almost all the organ systems in a wide variety of animals. Therefore, the present study was carried out to determine the effectiveness of folic acid (FA) in alleviating the toxicity of chromium (VI) on certain biochemical parameters, lipid peroxidation, and enzyme activities of male New Zealand white rabbits. Six rabbits per group were assigned to one of four treatment groups: 0 mg FA and 0 mg Cr(VI)/kg BW (control); 8.3 microg FA/kg BW; 5 mg Cr(VI)/kg BW; 5 mg Cr(VI) plus 8.3 microg FA/kg BW, respectively. Rabbits were orally administered their respective doses every day for 10 weeks. Results obtained showed that Cr(VI) significantly (P < 0.05) increased the levels of free radicals and the activity of glutathione S-transferase (GST), and decreased the content of sulfhydryl groups (SH groups) in liver, testes, brain, kidney, and lung. The activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (AlP), acid phosphatase (AcP), and lactate dehydrogenase (LDH) were significantly decreased in liver and testes due to Cr(VI) administration. Also, AlP and AcP activities were significantly decreased in kidney and lung. The activity of acetylcholinesterase (AChE) was significantly decreased in brain and plasma. Contrariwise, the activities of AST and ALT were significantly increased in plasma, while AlP and AcP decreased. Chromium (VI) treatment caused a significant decrease in plasma total protein (TP) and globulin, and increased total lipids (TL), cholesterol, glucose, urea, creatinine, and bilirubin concentrations. Folic acid alone significantly decreased the levels of free radicals in liver, brain, and kidney, and increased the content of SH-group. The activities of AST, ALT, and LDH in liver; AST, ALT, AlP, AcP, and LDH in testes; AcP in kidney; AlP and AcP in lung, and LDH in brain were significantly increased. Plasma TP and albumin were increased, while urea and creatinine were decreased. The presence of FA with Cr(VI) restored the changes in enzyme activities and biochemical parameters. In conclusion, folic acid could be effective in the protection of chromium-induced toxicity. 相似文献
63.
Ben Hlima Hajer Karray Aida Dammak Mouna Elleuch Fatma Michaud Philippe Fendri Imen Abdelkafi Slim 《Environmental science and pollution research international》2021,28(37):51046-51059
Environmental Science and Pollution Research - Amylases are enzymes required for starch degradation and are naturally produced by many microorganisms. These enzymes are used in several fields such... 相似文献
64.
Jebri Sihem Yahya Mariem Rahmani Faten Amri Islem Hamdi Moktar Hmaied Fatma 《Environmental science and pollution research international》2022,29(50):75575-75586
Environmental Science and Pollution Research - The main objective of this study is to evaluate the effect of irradiation by Gamma rays and Electron Beam (E-Beam) on naturally occurring... 相似文献
65.
Sialoblastoma is a rare, locally aggressive, and potentially malignant perinatal salivary tumor that predominantly affects the parotid glands. To date, 29 cases of sialoblastoma have been reported. We report a further case of sialoblastoma diagnosed at 37 weeks of gestation presenting with novel findings that are the premature centromere division and a high level of alpha-fetoprotein. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
66.
Meryem Jemli Fatma Karray Firas Feki Slim Loukil Najla Mhiri Fathi Aloui Sami Sayadi 《环境科学学报(英文版)》2015,27(4):102-112
The present work presents a study of the biological treatment of fish processing wastewa at salt concentration of 55 g/L. Wastewater was treated by both continuous stirred-ta reactor(CSTR) and membrane bioreactor(MBR) during 50 and 100 days, respectively. Th biological processes involved salt-tolerant bacteria from natural hypersaline environme at different organic loading rates(OLRs). The phylogenetic analysis of the correspond excised DGGE bands has demonstrated that the taxonomic affiliation of the most domin species includes Halomonadaceae and Flavobacteriaceae families of the Proteobacteria(Gamm proteobacteria class) and the Bacteroidetes phyla, respectively. The results of MBR w better than those of CSTR in the removal of total organic carbon with efficiencies from 97 to 98.6%. Nevertheless, salinity with increasing OLR aggravates fouling that requires m cleaning for a membrane in MBR while leads to deterioration of sludge settleability a effluent quality in CSTR. 相似文献
67.
Mariem Chaâbane Nejla Soudani Khawla Benjeddou Mouna Turki Fatma Ayadi Makni Tahia Boudawara 《毒物与环境化学》2015,97(9):1253-1264
The protective effect of Nitraria retusa fruit extract against hepatotoxicity induced by penconazole at a dose of 67 mg/kg body weight given intraperitoneally every two days to male Wistar rats was investigated. Penconazole exposure increased malondialdehyde, hydrogen peroxide, and advanced oxidation protein product levels. Hepatic biomarkers as well as enzymatic (catalase, superoxide dismutase and glutathione peroxidase) and nonenzymatic (vitamin C, non-protein thiols and metallothioneins) antioxidant status were also altered. Treatment with N. retusa extract improved all parameters cited above. Liver histological studies confirmed the biochemical parameters. These results provide a scientific basis for the use of N. retusa fruit against hepatotoxicity. 相似文献
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A conventional activated sludge treatment facility was the subject of this study. The assessment was directed at determining the characteristics of the raw wastewater, the quality of the treated effluent and the efficiency of the various treatment units. Furthermore, the water quality along the effluent irrigation canal was monitored. The assessment of the quality of the treated effluent for irrigation is based on the guidelines established by the World Health Organization and the Egyptian decree 9/89 for the use of wastewater in agriculture. The results of the study indicated that the concentration of the raw wastewater was considered moderate. The mean values of the COD (Chemical Oxygen Demand), BOD (Biological Oxygen Demand) and total suspended solids (TSS) were around 250, 102 and 142 mg l–1, respectively. This was attributed to the high quantities of wastewater from industrial sources. The overall efficiency of the treatment facility was good. The mean residual COD, BOD and TSS were 25, 8 and 21 mg l–1 and the corresponding percentage removal values were 90, 92 and 85%, respectively. The maximum percentage removal of oil and grease was 84% with a mean residual concentration of 24 mg l–1. The total viable count (22°C and 37°C), faecal coliform and aecal streptococci were reduced by 99.9% compared to only 99.5% for Salmonella. Bacteriological examination of the dried sludge indicated a reduction of nine logs of faecal coliform and faecal streptococci, as compared to thickened sludge. Analysis of the Ni, Cu, Pb and Cr in the dried sludge indicated that their concentrations are within the permissible limits. Zinc exceeded the consent standards by 50%. The results of the analyses of samples collected at the beginning of the irrigation canal indicated insignificant changes from the characteristics of the final effluent. Samples collected at a distance of 2km along the irrigation canal showed mean reductions in the COD and BOD of 28.6 and 47%, respectively, which could be attributed to sedimentation and/or a self-purification effect. An increase in the total nitrogen, total phosphorus and total viable count was also recorded, which could be due to seepage from the agricultural land. From the data available it is evident that the treated wastewater could be used for restricted irrigation. The design and implementation of a monitoring programme is recommended. 相似文献