全文获取类型
收费全文 | 331篇 |
免费 | 4篇 |
国内免费 | 7篇 |
专业分类
安全科学 | 15篇 |
废物处理 | 24篇 |
环保管理 | 30篇 |
综合类 | 71篇 |
基础理论 | 58篇 |
污染及防治 | 108篇 |
评价与监测 | 16篇 |
社会与环境 | 19篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 11篇 |
2020年 | 9篇 |
2019年 | 6篇 |
2018年 | 13篇 |
2017年 | 14篇 |
2016年 | 11篇 |
2015年 | 13篇 |
2014年 | 11篇 |
2013年 | 21篇 |
2012年 | 21篇 |
2011年 | 28篇 |
2010年 | 17篇 |
2009年 | 17篇 |
2008年 | 17篇 |
2007年 | 28篇 |
2006年 | 13篇 |
2005年 | 17篇 |
2004年 | 11篇 |
2003年 | 7篇 |
2002年 | 7篇 |
2001年 | 5篇 |
2000年 | 2篇 |
1999年 | 9篇 |
1998年 | 2篇 |
1997年 | 7篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1980年 | 1篇 |
1976年 | 1篇 |
1971年 | 1篇 |
1970年 | 2篇 |
1965年 | 1篇 |
1960年 | 1篇 |
1938年 | 1篇 |
排序方式: 共有342条查询结果,搜索用时 375 毫秒
71.
This paper examines the science-practice interface in the process of adapting to climate change in society. This paper analyses science-based stakeholder dialogues with climate scientists, municipal officers and private individual forest owners in Sweden, and examines how local experts both share scientific knowledge and experience and integrate it into their work strategies and practices. The results demonstrate how local experts jointly conceptualise climate adaptation, how scientific knowledge is domesticated among local experts in dialogue with scientific experts, the emergence of anchoring devices, and the boundary-spanning functions that are at work in the respective sectors. 相似文献
72.
73.
Application of an ELISA for PCB 118 to the screening of dioxin-like PCBs in retail fish 总被引:1,自引:0,他引:1
Tsutsumi T Amakura Y Okuyama A Tanioka Y Sakata K Sasaki K Maitani T 《Chemosphere》2006,65(3):467-473
A commercially available enzyme-linked immunosorbent assay (ELISA) kit was evaluated for the determination of toxic equivalents (TEQs) of dioxin-like polychlorinated biphenyls (PCBs) in retail fish. The ELISA was highly specific for 2,3',4,4',5-pentachlorobiphenyl (PCB 118), which is generally the most abundant dioxin-like PCB isomer found in fish. The quantitative limit of the ELISA (using 3,3',4'-trichloro-4-methoxybiphenyl as a surrogate standard for PCB 118) was 10 ng ml(-1) (125 pg assay(-1)) in the standard curve, corresponding to 50 pg PCB 118 g(-1) in the tested sample. Good recoveries of PCB 118 (78.7-112.3%) were obtained for spiked purified fish extracts according to the ELISA. Good linearity was also obtained in dilution tests using purified fish extracts. No significant interference of the matrix was observed in the ELISA when this purification procedure was used. Recovery tests in which PCB 118 was added to fish samples also resulted in acceptable recoveries (60.2-82.3%) in the ELISA following purification. The ELISA results for fish samples correlated well with the TEQ concentrations of dioxin-like PCBs obtained by high-resolution gas chromatography/high-resolution mass spectrometry (r = 0.92, n = 26). These data indicate that the ELISA kit is suitable for screening retail fish for the TEQs of dioxin-like PCBs. 相似文献
74.
Remediation of cadmium contamination in paddy soils by washing with chemicals: selection of washing chemicals 总被引:3,自引:0,他引:3
Makino T Sugahara K Sakurai Y Takano H Kamiya T Sasaki K Itou T Sekiya N 《Environmental pollution (Barking, Essex : 1987)》2006,144(1):2-10
The efficiencies of neutral salts, strong acids, and chelates were tested for extracting cadmium (Cd) from three paddy soils. The higher the selectivity of the cations of the added neutral salts toward soil adsorption sites, the lower the pH in the extracts and the more soil Cd could be extracted. In addition, soil carbon and nitrogen contents and mineral composition were closely associated with the amount of Cd extracted. Calcium chloride and iron(III) chloride were selected as wash chemicals to restore Cd-contaminated paddy soils in situ. Washing with calcium chloride led to the formation of Cd chloride complexes, enhancing Cd extraction from the soils. The washing also substantially decreased soil levels of exchangeable and acid-soluble Cd, which are the major forms of bioavailable Cd for rice (Oryza sativa L.). The optimum conditions for in situ soil washing were also determined for calcium chloride. 相似文献
75.
76.
Dick Oepkes G. C. Page-Christiaens Caroline J. Bax Mireille N. Bekker Catia M. Bilardo Elles M. J. Boon G. Heleen Schuring-Blom Audrey B. C. Coumans Brigitte H. Faas Robert-Jan H. Galjaard Attie T. Go Lidewij Henneman Merryn V. E. Macville Eva Pajkrt Ron F. Suijkerbuijk Karin Huijsdens-van Amsterdam Diane Van Opstal E. J. Verweij Marjan M. Weiss Erik A. Sistermans and for the Dutch NIPT Consortium 《黑龙江环境通报》2016,36(12):1083-1090
77.
78.
Junichi Okuyama Takashi Kitagawa Kei Zenimoto Shingo Kimura Nobuaki Arai Yoshikazu Sasai Hideharu Sasaki 《Marine Biology》2011,158(9):2055-2063
We used Lagrangian numerical simulations to examine the trans-Pacific dispersal processes of loggerhead turtle hatchlings.
Ten thousand simulated particles were released from each of the three nesting regions in Japan and tracked for 5 years. Results
showed many particles moving eastward, drifting in the Kuroshio Current followed by the Kuroshio Extension Current. However,
no particles reached Baja California, a known feeding area, through passive processes, indicating that trans-Pacific transportation
requires active swimming by turtles. The duration of the trans-Pacific dispersal was estimated to be at least 1.6–3.4 years,
with some turtles drifting in the Kuroshio Countercurrent and remaining in the western Pacific even after 5 years. This indicates
that as revealed by previous genetic studies, not all loggerheads always disperse along a trans-Pacific route. The findings
showed that survival and expected growth rates varied widely according to ambient temperatures during drifting, which in turn
depended on nesting location. 相似文献
79.
80.
Kazunori Fujita Gouki Sasaki Kazuki Kobayashi 《Journal of Material Cycles and Waste Management》1999,1(1):48-52
We have investigated a fabric-filter-supported catalyst for removing harmful solid and gaseous compounds simultaneously from
municipal incinerator exhaust gas. We studied the ways in which the efficiency of NO
x
removal is influenced by filter temperature, gas flow rate, and catalyst content. The reduction of the catalyst content by
mechanical reverse washing was investigated, and the state of the catalyst supported in the fabric filter was also observed
using a scanning electron microscope. The catalyst supported by the fabric filter showed a removal efficiency above 75% when
the filter temperature was 200°C, the gas flow rate was 1 m/min, and the catalyst content of the fabric filter was above 300 g/m2. The catalyst was supported uniformly on the fibers of the fabric filter, and fine catalyst particles remained on the fibers
after mechanical reverse washing.
Received: October 15, 1997 / Accepted: March 19, 1999 相似文献