全文获取类型
收费全文 | 2782篇 |
免费 | 320篇 |
国内免费 | 875篇 |
专业分类
安全科学 | 367篇 |
废物处理 | 97篇 |
环保管理 | 222篇 |
综合类 | 1921篇 |
基础理论 | 412篇 |
污染及防治 | 492篇 |
评价与监测 | 154篇 |
社会与环境 | 133篇 |
灾害及防治 | 179篇 |
出版年
2024年 | 18篇 |
2023年 | 60篇 |
2022年 | 164篇 |
2021年 | 214篇 |
2020年 | 175篇 |
2019年 | 142篇 |
2018年 | 135篇 |
2017年 | 155篇 |
2016年 | 145篇 |
2015年 | 186篇 |
2014年 | 213篇 |
2013年 | 207篇 |
2012年 | 252篇 |
2011年 | 232篇 |
2010年 | 222篇 |
2009年 | 200篇 |
2008年 | 216篇 |
2007年 | 201篇 |
2006年 | 161篇 |
2005年 | 124篇 |
2004年 | 73篇 |
2003年 | 63篇 |
2002年 | 60篇 |
2001年 | 81篇 |
2000年 | 65篇 |
1999年 | 52篇 |
1998年 | 32篇 |
1997年 | 27篇 |
1996年 | 24篇 |
1995年 | 16篇 |
1994年 | 25篇 |
1993年 | 16篇 |
1992年 | 9篇 |
1991年 | 1篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有3977条查询结果,搜索用时 31 毫秒
961.
Yun Zhu Yanwen Lao Carey Jang Chen-Jen Lin Jia Xing Shuxiao Wang Joshua S. Fu Shuang Deng Junping Xie Shicheng Long 《环境科学学报(英文版)》2015
This article describes the development and implementations of a novel software platform that supports real-time, science-based policy making on air quality through a user-friendly interface. The software, RSM-VAT, uses a response surface modeling (RSM) methodology and serves as a visualization and analysis tool (VAT) for three-dimensional air quality data obtained by atmospheric models. The software features a number of powerful and intuitive data visualization functions for illustrating the complex nonlinear relationship between emission reductions and air quality benefits. The case study of contiguous U.S. demonstrates that the enhanced RSM-VAT is capable of reproducing the air quality model results with Normalized Mean Bias < 2% and assisting in air quality policy making in near real time. 相似文献
962.
963.
964.
Linlin Xing Yongbing Xie Daisuke Minakat Hongbin Cao Jiadong Xiao Yi Zhang John C. Crittenden 《环境科学学报(英文版)》2014,26(10):2095-2105
Ozonation of oxalate in aqueous phase was performed with a commercial activated carbon(AC)in this work. The effect of AC dosage and solution pH on the contribution of hydroxyl radicals(HOU) in bulk solution and oxidation on the AC surface to the removal of oxalate was studied. We found that the removal of oxalate was reduced by tert-butyl alcohol(tBA) with low dosages of AC,while it was hardly affected by tBA when the AC dosage was greater than 0.3 g/L. tBA also inhibited ozone decomposition when the AC dosage was no more than 0.05 g/L, but it did not work when the AC dosage was no less than 0.1 g/L. These observations indicate that HOUin bulk solution and oxidation on the AC surface both contribute to the removal of oxalate. HOU oxidation in bulk solution is significant when the dosage of AC is low, whereas surface oxidation is dominant when the dosage of AC is high. The oxalate removal decreased with increasing pH of the solution with an AC dosage of 0.5 g/L. The degradation of oxalate occurs mainly through surface oxidation in acid and neutral solution, but through HOUoxidation in basic bulk solution. A mechanism involving both HOUoxidation in bulk solution and surface oxidation was proposed for AC enhanced ozonation of oxalate. 相似文献
965.
双甘膦废水中含有高浓度总磷、有机磷、甲醛、氰化物、氨氮、COD,运用三效蒸发+强氧化+两级化学除磷+UASB+兼氧+好氧组合处理双甘膦废水。研究结果表明双甘膦废水排放满足《污水综合排放标准》(G88978—1996)二级排放标准。 相似文献
966.
967.
968.
969.
970.