全文获取类型
收费全文 | 4009篇 |
免费 | 33篇 |
国内免费 | 13篇 |
专业分类
安全科学 | 43篇 |
废物处理 | 262篇 |
环保管理 | 244篇 |
综合类 | 642篇 |
基础理论 | 818篇 |
环境理论 | 4篇 |
污染及防治 | 1419篇 |
评价与监测 | 375篇 |
社会与环境 | 240篇 |
灾害及防治 | 8篇 |
出版年
2023年 | 44篇 |
2022年 | 125篇 |
2021年 | 122篇 |
2020年 | 46篇 |
2019年 | 50篇 |
2018年 | 147篇 |
2017年 | 106篇 |
2016年 | 204篇 |
2015年 | 109篇 |
2014年 | 228篇 |
2013年 | 387篇 |
2012年 | 245篇 |
2011年 | 242篇 |
2010年 | 185篇 |
2009年 | 140篇 |
2008年 | 231篇 |
2007年 | 230篇 |
2006年 | 210篇 |
2005年 | 143篇 |
2004年 | 119篇 |
2003年 | 106篇 |
2002年 | 91篇 |
2001年 | 60篇 |
2000年 | 45篇 |
1999年 | 34篇 |
1998年 | 13篇 |
1997年 | 12篇 |
1996年 | 8篇 |
1995年 | 23篇 |
1994年 | 17篇 |
1993年 | 12篇 |
1992年 | 7篇 |
1990年 | 10篇 |
1989年 | 9篇 |
1985年 | 6篇 |
1970年 | 6篇 |
1967年 | 7篇 |
1966年 | 11篇 |
1965年 | 15篇 |
1964年 | 28篇 |
1963年 | 12篇 |
1962年 | 17篇 |
1961年 | 11篇 |
1960年 | 9篇 |
1959年 | 27篇 |
1958年 | 25篇 |
1957年 | 17篇 |
1956年 | 13篇 |
1955年 | 18篇 |
1954年 | 7篇 |
排序方式: 共有4055条查询结果,搜索用时 46 毫秒
91.
Hiller Edgar Pilková Zuzana Filová Lenka Jurkovič Ľubomír Mihaljevič Martin Lacina Petr 《Environmental science and pollution research international》2021,28(5):5455-5471
Environmental Science and Pollution Research - It is well known that road transport emits various trace elements into the environment, which are deposited in soils in the vicinity of roads,... 相似文献
92.
Murillo-Acevedo Yesid S. Giraldo Liliana Poon Po S. Matos Juan Moreno-Piraján Juan C. 《Environmental science and pollution research international》2021,28(6):6746-6757
Environmental Science and Pollution Research - A linear algebra theorem like Cramer’s rule was used for the analysis of a system of equations obtained from UV spectroscopy, and results were... 相似文献
93.
Dhaouadi Fatma Sellaoui Lotfi Reynel-Ávila Hilda Elizabeth Landín-Sandoval Verónica Mendoza-Castillo Didilia I. Jaime-Leal José Enrique Lima Eder Claudio Bonilla-Petriciolet Adrián Lamine Abdelmottaleb Ben 《Environmental science and pollution research international》2021,28(24):30943-30954
Environmental Science and Pollution Research - A theoretical physicochemical and thermodynamic investigation of the adsorption of heavy metals Zn2+, Cd2+, Ni2+, and Cu2+on carbon-based adsorbents... 相似文献
94.
Sánchez-Gavilán Irene Rufo Lourdes Rodríguez Nuria de la Fuente Vicenta 《Environmental science and pollution research international》2021,28(3):2719-2727
Environmental Science and Pollution Research - A complete survey is presented on the inorganic composition of the euhalophyte annual succulent species Salicornia patula (Chenopodiaceae), including... 相似文献
95.
Solá María Zoleica Simón Prado Carolina Rosa Mariana Aráoz María Victoria Coll Benimeli Claudia Susana Polti Marta Alejandra Alvarez Analia 《Environmental science and pollution research international》2021,28(37):51217-51231
Environmental Science and Pollution Research - Phytoremediation techniques have been proposed as ecological methods to clean up contaminated sites. This study is aimed to evaluate the effect of the... 相似文献
96.
Simone Guadagnucci Morillo Adriana Luchs Audrey Cilli Cibele Daniel Ribeiro Rita de Cássia Compagnoli Carmona Maria do Carmo Sampaio Tavares Timenetsky 《Food and environmental virology》2017,9(2):142-148
Norovirus (NoV) is recognized as the most common cause of foodborne outbreaks. In 2014, an outbreak of acute gastroenteritis occurred on a cruise ship in Brazil, and NoV became the suspected etiology. Here we present the molecular identification of the NoV strains and the use of sequence analysis to determine modes of virus transmission. Food (cream cheese, tuna salad, grilled fish, orange mousse, and vegetables soup) and clinical samples were analyzed by ELISA, conventional RT-PCR, qRT-PCR, and sequencing. Genogroup GII NoV was identified by ELISA and conventional RT-PCR in fecal samples from 5 of 12 patients tested (41.7%), and in the orange mousse food sample by conventional RT-PCR and qRT-PCR. Two fecal GII NoV samples and the orange mousse GII NoV sample were successfully genotyped as GII.Pe (ORF 1), revealed 98.0–98.8% identities among them, and shared phylogenetically distinct cluster. Establishing the source of a NoV outbreak can be a challenging task. In this report, the molecular analysis of the partial RdRp NoV gene provided a powerful tool for genotyping (GII.Pe) and tracking of outbreak-related samples. In addition, the same fast and simple extraction methods applied to clinical samples could be successfully used for complex food matrices, and have the potential to be introduced in routine laboratories for screening foods for presence of NoV. 相似文献
97.
Christine Susan Fagnant Alexandra Lynn Kossik Nicolette Angela Zhou Liliana Sánchez-Gonzalez Jill Christin Falman Erika Karen Keim Yarrow Linden Alana Scheibe Kilala Sayisha Barnes Nicola Koren Beck David S. Boyle John Scott Meschke 《Food and environmental virology》2017,9(4):383-394
Environmental surveillance of poliovirus (PV) and other non-enveloped viruses can help identify silent circulation and is necessary to certify eradication. The bag-mediated filtration system is an efficient method to filter large volumes of environmental waters at field sites for monitoring the presence of viruses. As filters may require long transit times to off-site laboratories for processing, viral inactivation or overgrowth of bacteria and fungi can interfere with virus detection and quantification (Miki and Jacquet in Aquatic Microb Ecol 51(2):195–208, 2008). To evaluate virus survival over time on ViroCap? filters, the filters were seeded with PV type 1 (PV1) and/or MS2 and then dosed with preservatives or antibiotics prior to storage and elution. These filters were stored at various temperatures and time periods, and then eluted for PV1 and MS2 recovery quantification. Filters dosed with the preservative combination of 2% sodium benzoate and 0.2% calcium propionate had increased virus survival over time when stored at 25 °C, compared to samples stored at 25 °C with no preservatives. While elution within 24 h of filtration is recommended, if storage or shipping is required then this preservative mixture can help preserve sample integrity. Addition of an antibiotic cocktail containing cephapirin, gentamicin, and Proclin? 300 increased recovery after storage at 4 and 25 °C, when compared to storage with no antibiotics. The antibiotic cocktail can aid sample preservation if access to appropriate antibiotics storage is available and sample cold chain is unreliable. This study demonstrated that the use of preservatives or antibiotics is a simple, cost-effective method to improve virus detection from ViroCap cartridge filters over time. 相似文献
98.
In animal societies, most collective and individual decision making depends on the presence of reproductive individuals. The efficient transmission of information among reproductive and non-reproductive individuals is therefore a determinant of colony organization. In social insects, the presence of a queen modulates multiple colonial activities. In many species, it negatively affects worker reproduction and the development of diploid larvae into future queens. The queen mostly signals her presence through pheromone emission, but the means by which these chemicals are distributed in the colony are still unclear. In several ant species, queen-laid eggs are the vehicle of the queen signal. The aim of this study was to investigate whether queen-laid eggs of the ant Aphaenogaster senilis possess queen-specific cuticular hydrocarbons and/or Dufour or poison gland compounds, and whether the presence of eggs inhibited larval development into queens. Our results show that the queen- and worker-laid eggs shared cuticular and Dufour hydrocarbons with the adults; however, their poison gland compounds were not similar. Queen-laid eggs had more dimethylalkanes and possessed a queen-specific mixture of cuticular hydrocarbons composed of 3,11?+?3,9?+?3,7-dimethylnonacosane, in higher proportions than did worker-laid eggs. Even though the queen-laid eggs were biochemically similar to the queen, their addition to experimentally queenless groups did not prevent the development of new queens. More studies are needed on the means by which queen ant pheromones are transmitted in the colony, and how these mechanisms correlates with life history traits. 相似文献
99.
100.
How do distinct visual stimuli help bumblebees discover flowers before they have experienced any reward outside of their nest? Two visual floral properties, type of a pattern (concentric vs radial) and its position on unrewarding artificial flowers (central vs peripheral on corolla), were manipulated in two experiments. Both visual properties showed significant effects on floral choice. When pitted against each other, pattern was more important than position. Experiment 1 shows a significant effect of concentric pattern position, and experiment 2 shows a significant preference towards radial patterns regardless of their position. These results show that the presence of markings at the center of a flower are not so important as the presence of markings that will direct bees there. 相似文献