全文获取类型
收费全文 | 2304篇 |
免费 | 23篇 |
国内免费 | 35篇 |
专业分类
安全科学 | 88篇 |
废物处理 | 173篇 |
环保管理 | 201篇 |
综合类 | 331篇 |
基础理论 | 399篇 |
污染及防治 | 778篇 |
评价与监测 | 233篇 |
社会与环境 | 148篇 |
灾害及防治 | 11篇 |
出版年
2024年 | 2篇 |
2023年 | 38篇 |
2022年 | 87篇 |
2021年 | 95篇 |
2020年 | 44篇 |
2019年 | 37篇 |
2018年 | 93篇 |
2017年 | 88篇 |
2016年 | 136篇 |
2015年 | 74篇 |
2014年 | 128篇 |
2013年 | 228篇 |
2012年 | 162篇 |
2011年 | 176篇 |
2010年 | 119篇 |
2009年 | 100篇 |
2008年 | 137篇 |
2007年 | 124篇 |
2006年 | 116篇 |
2005年 | 95篇 |
2004年 | 76篇 |
2003年 | 45篇 |
2002年 | 39篇 |
2001年 | 14篇 |
2000年 | 7篇 |
1999年 | 12篇 |
1998年 | 7篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1995年 | 7篇 |
1994年 | 5篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 5篇 |
1988年 | 6篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1979年 | 2篇 |
1966年 | 2篇 |
1962年 | 2篇 |
1961年 | 2篇 |
1960年 | 2篇 |
1959年 | 2篇 |
1953年 | 2篇 |
1929年 | 1篇 |
1928年 | 2篇 |
排序方式: 共有2362条查询结果,搜索用时 15 毫秒
141.
142.
143.
144.
Francesca R. Grati Francesca Malvestiti Beatrice Grimi Elisa Gaetani Anna Maria Di Meco Anna Trotta Rosaria Liuti Sara Chinetti Francesca Dulcetti Anna Maria Ruggeri Cristina Agrati Giuditta Frascoli Silvia Milani Simona De Toffol Lorenza Martinoni Silvia Paganini Livia Marcato Federico Maggi Giuseppe Simoni 《黑龙江环境通报》2013,33(5):502-508
145.
146.
Maria Angela Rustico Mariano Lanna Dario Coviello John Smoleniec Umberto Nicolini 《黑龙江环境通报》2007,27(9):793-799
Fetal pleural effusion, a nonspecific accumulation of fluid in the pleural space, is an uncommon anomaly which can be associated with aneuploidy and a range of other structural malformations or genetic syndromes. Spontaneous resolution is not rare and confers a good prognosis. Perinatal outcome is better for those fetuses without hydrops than those presenting with hydrops. A detailed review of the literature indicates that, for fetuses with persistent effusions, in utero intervention (repeated thoracocentesis, intrauterine shunting and pleurodesis) may improve the chances of survival. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
147.
148.
149.
In the Recôncavo of Bahia (located between 12°33′ and 13°10′S and 38°00′and 39°00′W), there are significant discharges of SO2 and NOx due to local, industrial and urban activities. The incoming air masses from the Atlantic Ocean are enriched with seaspray, which neutralizes part of the rain acidity. The extent of seaspray neutralization of rain acidity was quantified in four sites of the region, each with different loads of seaspray. Rain samples were obtained daily at the same time, integrating the precipitation of the previous 24 h, using wet-only collectors and analyzed for pH by potentiometry and for sodium by flame photometry. The amount of rain acidity in Recôncavo neutralized by seaspray ranged from <1% up to 88% and depended on the site. On average, neutralization ranged from 5% to 18%. 相似文献
150.
Developing the interaction matrix technique as a tool assessing the impact of traffic on air quality 总被引:1,自引:0,他引:1
This paper develops a technique which can be used as a preliminary tool for assessing air quality related to urban traffic. It combines a Geographic Information System (GIS) with an interaction matrix-type methodology based on a system analysis approach. The matrix identifies and quantifies interactions between all selected variables involved in a system as well as their interaction with the system as a whole. This matrix is used to determine the weightings to apply to spatial datasets within a GIS to develop a pollution vulnerability map. The focus of the paper is to introduce and assess a more versatile coding of the interaction matrix with respect to previously used coding. A case study is presented in which the modified interaction methodology is applied to data for a busy urban location. The resulting vulnerability map, in terms of pollution vulnerable hot spots, was compared to a pollution map derived from an advanced dispersion model. The interaction matrix technique with GIS can be used as a tool complementary to sophisticated numerical modelling and has potential as an analytical tool to evaluate multidisciplinary systems. 相似文献