全文获取类型
收费全文 | 116篇 |
免费 | 0篇 |
国内免费 | 10篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 18篇 |
环保管理 | 1篇 |
综合类 | 21篇 |
基础理论 | 15篇 |
污染及防治 | 51篇 |
评价与监测 | 5篇 |
社会与环境 | 13篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 3篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 1篇 |
2014年 | 4篇 |
2013年 | 12篇 |
2012年 | 9篇 |
2011年 | 10篇 |
2010年 | 9篇 |
2009年 | 6篇 |
2008年 | 8篇 |
2007年 | 6篇 |
2006年 | 8篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 4篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 3篇 |
排序方式: 共有126条查询结果,搜索用时 312 毫秒
101.
The objective of this study was to elucidate characteristics associated with rivers by classification of major rivers in Japan into sereral types based on riparian conditions.As the results of principal compoent analysis(PCA) with use of parameters reflecting forms and artificial alterations of respective rives,four major components such as“comprehensive riparian size”,“intactness of water front”,“continuity of streams” and “silmplicity of landform in river basin”were extracted.Subsequently,cluster analysis was performed based on principal component scores,leading to succesful classification of major rivers into 6 types.These findings disclosed that(1) the extracted principal components provide effective viewpoint for classification of rivers;(2) distribution of respective classes indicates are properties;and (3) the emplyed quantitative procedures were found effective for classification of major rivers. 相似文献
102.
Hai Hoang Ning Yu Tadashi Toyam Daisuke Inoue Kazunari Sei Michihiko Ike 《环境科学学报(英文版)》2010,22(4):494-499
Removal experiments of phenol,aniline,2,4-dichlorophenol,nonylphenol and bisphenol A(BPA) using Spirodela polyrrhizabacterial associations revealed that all compounds but BPA underwent accelerated removal.The mechanisms differed depending on the substrates.It was found that S.polyrrhiza has a great ability to release phenolic compound-rich root exudates,and the exudates seem to stimulate bacterial degradation of a variety of aromatic compounds. 相似文献
103.
Nobuo Ishiyama Kazuki Miura Takahiro Inoue Masanao Sueyoshi Futoshi Nakamura 《Conservation biology》2021,35(3):884-896
Forest conversion is one of the greatest global threats to biodiversity, and land-use change and subsequent biodiversity declines sometimes occur over a variety of underlying geologies. However, how forest conversion and underlying geology interact to alter biodiversity is underappreciated, although spatial variability in geology is considered an integral part of sustaining ecosystems. We aimed to examine the effects of forest conversion to farmland, the underlying geology, and their interaction on the stream fishes’ diversity, evenness, and abundance in northeastern Japan. We disentangled complex pathways between abiotic and biotic factors with structural equation modeling. Species diversity of stream fishes was indirectly shaped by the interaction of land use and underlying geology. Diversity declined due to nutrient enrichment associated with farmlands, which was mainly the result of changes in evenness rather than by changes in species richness. This impact was strongest in streams with volcanic geology with coarse substrates probably because of the differential responses of abundant stream fishes to nutrient enrichment (i.e., dominance) and the high dependency of these fishes on large streambed materials during their life cycles. Our findings suggest that remediation of deforested or degraded forest landscapes would be more efficient if the interaction between land use and underlying geology was considered. For example, the negative impacts of farmland on evenness were larger in streams with volcanic geology than in other stream types, suggesting that riparian forest restoration along such streams would efficiently provide restoration benefits to stream fishes. Our results also suggest that land clearing around such streams should be avoided to conserve species evenness of stream fishes. 相似文献
104.
Variation in estrogenic activity among fractions of a commercial nonylphenol by high performance liquid chromatography 总被引:8,自引:0,他引:8
Kim YS Katase T Sekine S Inoue T Makino M Uchiyama T Fujimoto Y Yamashita N 《Chemosphere》2004,54(8):1127-1134
Estrogenic activity by recombinant yeast screen assay of the commercial NP was considerably higher when compared with that of n-nonylphenol (n-NP). Fractionation of the commercial NP by high performance liquid chromatography (HPLC) afforded seven isomers: 4-(1,3-dimethyl-1-propyl-butyl)-phenol, 4-(1,1,3-trimethyl-hexyl)-phenol, 4-(1,1-dimethyl-3-ethyl-pentyl)-phenol, 4-(1,1,4-trimethyl-hexyl)-phenol, 4-(1-methyl-1-propyl-pentyl)-phenol, 4-(1,1,2-trimethyl-hexyl)-phenol and 4-(1-ethyl-1-methyl-hexyl)-phenol. The structures of these isomers were determined by GC-MS and nuclear magnetic resonance spectroscopy (NMR). All of these isomers possessed tertiary alpha-carbon in their chemical structures. Another tertiary NP, 4-(1,1-dimethyl-heptyl)-phenol was synthesized in the present study and this synthetic NP also exhibited the estrogenic activity. One fractionated compound was identified as one of decylphenol, 4-(1-ethyl-1,4,4-trimethyl-pentyl)-phenol. The isomer, 4-(1,1,4-trimethyl-hexyl)-phenol exhibited the highest estrogenic activity corresponding to 1/10000 that of 17beta-estradiol (E2). The activity of n-NP was the least. This suggests that it may be possible to develop a technical NP mixture with relatively low estrogenic activity. 相似文献
105.
Inoue M Suzuki A Nohara M Kan H Edward A Kawahata H 《Environmental pollution (Barking, Essex : 1987)》2004,129(3):399-407
We present 40 year-long skeletal chronologies of tin (Sn) and copper (Cu) from an annually-banded coral (Porites sp.) collected from Pohnpei Island, Micronesia (western equatorial Pacific). Both the elements are present in antifouling marine paints and are released inadvertently into ambient seawater. Especially, Sn has often been used in the form of tributyltin (TBT). Based on a stepwise pretreatment examination, Sn and Cu both inside and outside the aragonite lattice of the coral skeleton show a potential for providing marine pollution indicators. High values of extra-skeletal Cu/Ca and Sn/Ca atomic ratios were found between late 1960s and late 1980s during a period of active use of TBT-based antifouling paints worldwide. However, a significant decrease in both the ratios in the beginning of 1990s can be attributed to regulation of the use of TBT on cargo ships by countries such as the USA, Japan and Australia. 相似文献
106.
Saito K Ogawa M Takekuma M Ohmura A Kawaguchi M Ito R Inoue K Matsuki Y Nakazawa H 《Chemosphere》2005,61(9):1215-1220
A systematic method for analyzing dioxins (PCDDs, PCDFs and dioxin-like PCBs), hexachlorobenzene (HCB), heptachlor epoxide and beta-hexachlorocyclohexane (HCH) in human milk was developed to determine the residual amount of HCB in human milk and to evaluate the overall toxicity of both dioxins and HCB in human milk. The fractionation behavior of HCB on chromatography with silica gel, alumina, and activated carbon/silica gel, and the concentrated sulfuric acid decomposition method, which is widely used as a dioxin cleanup method, were studied in order to make the preprocessing operation for HCB measurement compatible with that for conventional dioxin measurement. HCB was found to be eluted in the 2% dichloromethane (DCM)/hexane 60 ml fraction from an alumina column. Heptachlor epoxide and a part of beta-HCH were eluted in the 10% DCM/hexane 50 ml fraction from a silica gel column, while the remaining beta-HCH was eluted in the 25% DCM/hexane 60 ml fraction from an activated carbon/silica gel column. Moreover, HCB showed significant correlation with dioxin congeners having high toxicity equivalence factors (TEFs). The results suggest that the exposure route to HCB and its accumulation behavior in the human body are similar to those of the dioxins. 相似文献
107.
108.
Miriam H. Inoue Rubem S. Oliveira Jr Jamil Constantin Diego G. Alonso Cássio A. Tormena 《Journal of environmental science and health. Part. B》2013,48(8):757-763
This research was aimed at understanding the dynamics of the herbicides diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea], imazapic [2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-methylnicotinic acid] and isoxaflutole [5-cyclopropyl-4-(2-methanesulfonyl-4-trifluoromethyl benzoyl)isoxazole] in two soils of different physico-chemical properties. To accomplish such intent, several greenhouse experiments were run. The bioavailability of diuron (0; 1.6 and 3.2 kg ha? 1), imazapic (0; 98 and 122.5 g ha? 1) and isoxaflutole (0; 35 and 70 g ha? 1) was measured in samples from a sandy loam soil and a clay soil, by sowing a bioindicator (Brachiaria decumbens), at 0, 25, 50, 75 and 100 days after herbicides application (DAA). Diuron was very stable in clay soil, providing control equal to or higher than 92% of bioindicator, up to 100 DAA, as assumed by biomass accumulation. No differential effect was observed in sandy loam soil, even when 2x labeled rate were applied. Imazapic provided a short bioavailability in relation to B. decumbens, independent of rates applied. The persistence of isoxaflutole was longer in clay soil (28 to 30 days). 相似文献
109.
Odor emission characteristics in rendering plant was studied by measuring 14 kinds of odorants in the emission gases from main processes: cooking of raw bone, concentrating of glue, refining of fat, and drying of bone. The odor from cooker had higher concentration of all odorous components compared with the other processes. From any process except the drying one, there were detected sulfur‐containing odorants in very high concentration. Of the odorants, concentrations of hydrogen sulfide and methyl mercaptan were higher. The odor from drying bed had comparatively low concentration of sulfur‐containing odorants, and higher concentration of ammonia and trimethylamine were detected. Lower fatty acids were detected from all processes though the concentrations were low. In the odorous gases taken at both the emission source and borderline side, high correlations were recognized between organoleptic test value and concentrations of measured odorants. 相似文献
110.
Noriyuki Momoshima Fumio Inoue Jun Shimada 《Journal of environmental radioactivity》2010,101(8):615-621
Atmospheric 85Kr concentration at Fukuoka, Japan was determined by an improved 85Kr analytical method using liquid scintillation counting (LSC). An average value of 1.54 ± 0.05 Bq m−3 was observed in 2008, which is about two times that measured in 1981 at Fukuoka, indicating a 29 mBq y−1 rate of increase as an average for these 27 years. The analytical method developed involves collecting Kr from air using activated charcoal at liquid N2 temperature and purifying it using He at dry ice temperature, followed by Kr separation by gas chromatography. An overall Kr recovery of 76.4 ± 8.1% was achieved when Kr was analyzed in 500-1000 l of air. The Kr isolated by gas chromatography was collected on silica gel in a quartz glass vial cooled to liquid N2 temperature and the activity of 85Kr was measured with a low-background LS counter. The detection limit of 85Kr activity by the present analytical method is 0.0015 Bq at a 95% confidence level, including all propagation errors, which is equivalent with 85Kr in 1.3 l of the present air under the analytical conditions of 72.1% counting efficiency, 0.1597 cps background count rate, and 76.4% Kr recovery. 相似文献