全文获取类型
收费全文 | 3162篇 |
免费 | 53篇 |
国内免费 | 47篇 |
专业分类
安全科学 | 133篇 |
废物处理 | 201篇 |
环保管理 | 302篇 |
综合类 | 560篇 |
基础理论 | 549篇 |
环境理论 | 1篇 |
污染及防治 | 953篇 |
评价与监测 | 322篇 |
社会与环境 | 210篇 |
灾害及防治 | 31篇 |
出版年
2023年 | 38篇 |
2022年 | 82篇 |
2021年 | 103篇 |
2020年 | 52篇 |
2019年 | 49篇 |
2018年 | 118篇 |
2017年 | 125篇 |
2016年 | 141篇 |
2015年 | 91篇 |
2014年 | 150篇 |
2013年 | 280篇 |
2012年 | 172篇 |
2011年 | 218篇 |
2010年 | 156篇 |
2009年 | 145篇 |
2008年 | 189篇 |
2007年 | 163篇 |
2006年 | 154篇 |
2005年 | 139篇 |
2004年 | 119篇 |
2003年 | 108篇 |
2002年 | 78篇 |
2001年 | 66篇 |
2000年 | 36篇 |
1999年 | 36篇 |
1998年 | 23篇 |
1997年 | 16篇 |
1996年 | 10篇 |
1995年 | 17篇 |
1994年 | 15篇 |
1993年 | 16篇 |
1992年 | 18篇 |
1991年 | 7篇 |
1990年 | 7篇 |
1989年 | 6篇 |
1988年 | 11篇 |
1987年 | 3篇 |
1986年 | 8篇 |
1985年 | 11篇 |
1984年 | 6篇 |
1983年 | 10篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1979年 | 4篇 |
1966年 | 3篇 |
1962年 | 7篇 |
1961年 | 4篇 |
1959年 | 3篇 |
1938年 | 2篇 |
1928年 | 2篇 |
排序方式: 共有3262条查询结果,搜索用时 15 毫秒
981.
982.
983.
984.
Yann Devos Pieter Maeseele Dirk Reheul Linda Van Speybroeck Danny De Waele 《Journal of Agricultural and Environmental Ethics》2008,21(1):29-61
Via a historical reconstruction, this paper primarily demonstrates how the societal debate on genetically modified organisms
(GMOs) gradually extended in terms of actors involved and concerns reflected. It is argued that the implementation of recombinant
DNA technology out of the laboratory and into civil society entailed a “complex of concerns.” In this complex, distinctions
between environmental, agricultural, socio-economic, and ethical issues proved to be blurred. This fueled the confusion between
the wider debate on genetic modification and the risk assessment of transgenic crops in the European Union. In this paper,
the lasting skeptical and/or ambivalent attitude of Europeans towards agro-food biotechnology is interpreted as signaling
an ongoing social request – and even a quest – for an evaluation of biotechnology with Sense and Sensibility. In this (re)quest, a broader-than-scientific dimension is sought for that allows addressing the GMO debate in a more “sensible”
way, whilst making “sense” of the different stances taken in it. Here, the restyling of the European regulatory frame on transgenic
agro-food products and of science communication models are discussed and taken to be indicative of the (re)quest to move from
a merely scientific evaluation and risk-based policy towards a socially more robust evaluation that takes the “non-scientific”
concerns at stake in the GMO debate seriously. 相似文献
985.
986.
987.
This article outlines the general design concepts and new chemistry necessary to achieve truly cost-effective management of an important part of the hazardous waste incineration system—i.e., the unit operations needed to treat wastewater generated by rotary kiln incinerators burning wastes containing halogens and heavy metals. 相似文献
988.
Esther Mancebo Iván Bernardo Maria J. Castro Francisco J. Fernández-Martinez Emilia Barreiro Paloma De-Pablos M.a Jesús Marin Silvia Cortezon Estela Paz-Artal Luis M. Allende 《黑龙江环境通报》2007,27(9):861-864
Mutations of the ataxia-telangiectasia-mutated (ATM) gene are responsible for the autosomal recessive disorder ataxia-telangiectasia (A-T). This study reports the first A-T prenatal diagnosis performed in Spain by direct molecular analysis. The pregnant woman had a previous child suffering from A-T due to a deletion in the ATM gene. The ATM coding region was sequenced in the A-T patient and her parents. Then, a specific polymerase chain reaction (PCR) to detect the deletion was performed for prenatal diagnosis. Additionally, polymorphic HLA loci were examined in order to exclude the possible contamination by maternal DNA. In this family of Gypsy origin, we carried out a rapid molecular diagnosis of A-T. Then, a prenatal diagnosis was carried out, identifying the deletion in the fetal DNA. Additionally, we performed a population study in unrelated Spanish Gypsies and in unrelated controls, showing that the deletion described could be a hotspot in the Spanish Gypsy population. The size of the coding region and the genomic structure, together with the absence of hotspots, make the mutation screening of the ATM gene difficult. The ability to identify ATM mutations provides a tool that can be applied in confirmatory diagnosis, genetic counselling, carrier prediction and prenatal diagnosis. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
989.
The estimation of octanol/water coefficients by means of chromatographic and structural parameters may be a useful method for the prediction of ecotoxicological behaviour of chemical compounds. Experimental aspects and validity of some parameters are discussed with respect to heterocyclic aromatic hydrocarbons, including benzofurans. It is concluded that reverse phase chromatographic systems and molecular connectivities are promising predictors of log Kow. 相似文献
990.