全文获取类型
收费全文 | 40701篇 |
免费 | 443篇 |
国内免费 | 323篇 |
专业分类
安全科学 | 1166篇 |
废物处理 | 1469篇 |
环保管理 | 5646篇 |
综合类 | 6490篇 |
基础理论 | 11531篇 |
环境理论 | 24篇 |
污染及防治 | 10557篇 |
评价与监测 | 2447篇 |
社会与环境 | 1865篇 |
灾害及防治 | 272篇 |
出版年
2022年 | 260篇 |
2021年 | 276篇 |
2019年 | 322篇 |
2018年 | 555篇 |
2017年 | 549篇 |
2016年 | 813篇 |
2015年 | 661篇 |
2014年 | 936篇 |
2013年 | 3064篇 |
2012年 | 1153篇 |
2011年 | 1690篇 |
2010年 | 1399篇 |
2009年 | 1400篇 |
2008年 | 1709篇 |
2007年 | 1792篇 |
2006年 | 1638篇 |
2005年 | 1346篇 |
2004年 | 1348篇 |
2003年 | 1278篇 |
2002年 | 1245篇 |
2001年 | 1653篇 |
2000年 | 1145篇 |
1999年 | 730篇 |
1998年 | 589篇 |
1997年 | 577篇 |
1996年 | 584篇 |
1995年 | 652篇 |
1994年 | 623篇 |
1993年 | 531篇 |
1992年 | 562篇 |
1991年 | 528篇 |
1990年 | 542篇 |
1989年 | 570篇 |
1988年 | 477篇 |
1987年 | 422篇 |
1986年 | 384篇 |
1985年 | 419篇 |
1984年 | 425篇 |
1983年 | 456篇 |
1982年 | 451篇 |
1981年 | 402篇 |
1980年 | 341篇 |
1979年 | 375篇 |
1978年 | 320篇 |
1977年 | 271篇 |
1976年 | 258篇 |
1975年 | 267篇 |
1974年 | 256篇 |
1973年 | 244篇 |
1972年 | 292篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Kalan Mohammad Ebrahimi Ghobadi Hassan Taleb Ziyad Ben Adham Davoud Cobb Caroline O Ward Kenneth D Behaleh Raed Fazlzadeh Mehdi 《Environmental science and pollution research international》2021,28(30):40346-40354
Environmental Science and Pollution Research - There is mixed evidence surrounding the relationship between tobacco use and COVID-19 infection/progression. The current study investigates beliefs... 相似文献
2.
Babut Marc Marchand Philippe Venisseau Anaïs Veyrand Bruno Ferrari Benoit J. D. 《Environmental science and pollution research international》2021,28(7):7766-7773
Environmental Science and Pollution Research - Legacy (i.e., polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD)) and alternative halogenated flame retardants (HFRs) were... 相似文献
3.
4.
5.
Moonsammy Stephan Oyedotun Temitope D. Timothy Renn-Moonsammy Donna-Marie Oyedotun Temitayo Deborah Ally Nasrudeen Kasim Oluwasinaayomi Faith Famewo Ayomide 《Journal of Material Cycles and Waste Management》2021,23(4):1678-1687
Journal of Material Cycles and Waste Management - The novel COVID-19 pandemic has disrupted the functioning of solid waste management globally as households experience an increase in their waste... 相似文献
6.
7.
Luo Xiaofang Dessie Wubliker Wang Meifeng Duns Gregory J. Rong Nianhang Feng Luya Zeng Jianqing Qin Zuodong Tan Yimin 《Journal of Material Cycles and Waste Management》2021,23(2):548-556
Journal of Material Cycles and Waste Management - The traditional Chinese medicinal plant Magnolia officinalis has a wide range of applications; including more than 200 kinds of patented Chinese... 相似文献
8.
G G Pyle S M Swanson D M Lehmkuhl 《Environmental pollution (Barking, Essex : 1987)》2002,116(2):243-255
Elevated concentrations of arsenic, nickel, and molybdenum in aquatic systems around northern Saskatchewan uranium mines are an environmental concern. Early life stage fathead minnows were used to assess toxicity from several aquatic systems near the Key Lake and Rabbit Lake uranium operations. Hatching success of fish embryos exposed to waters receiving contaminants associated with uranium ore milling was reduced by 32-61% relative to controls. Mortality differed in two lakes receiving mill effluents because of opposing factors influencing metal toxicity (i.e. low pH and high hardness). In one mill receiving water (Fox Lake), larval mortality was 0%, whereas mortality was 85% in water collected from a downstream location (Unknown Lake). Fish embryos exposed to open-pit dewatering effluent receiving waters, or water from a flooded open pit (i.e. pit waters), hatched 26-39% earlier than those exposed to reference or control water. The combination of low water hardness and elevated nickel concentrations in pit waters contributed to the early hatching. Egg hatchability and hatching time were more sensitive indicators of toxicity than 'standard' endpoints, like larval mortality and growth. Current regulatory emphasis on single contaminants and standard toxicological endpoints should be re-evaluated in light of the complex interaction among confounding variables such as pH, hardness. conductivity, and multi-metal mixtures. 相似文献
9.
10.