全文获取类型
收费全文 | 186篇 |
免费 | 1篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 12篇 |
环保管理 | 18篇 |
综合类 | 38篇 |
基础理论 | 38篇 |
污染及防治 | 58篇 |
评价与监测 | 16篇 |
社会与环境 | 9篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 6篇 |
2022年 | 15篇 |
2021年 | 11篇 |
2020年 | 13篇 |
2019年 | 4篇 |
2018年 | 11篇 |
2017年 | 10篇 |
2016年 | 7篇 |
2015年 | 7篇 |
2014年 | 9篇 |
2013年 | 10篇 |
2012年 | 5篇 |
2011年 | 11篇 |
2010年 | 10篇 |
2009年 | 8篇 |
2008年 | 13篇 |
2007年 | 8篇 |
2006年 | 8篇 |
2005年 | 4篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 5篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有192条查询结果,搜索用时 265 毫秒
51.
52.
Gustavo A. Bisbal James D. Ruff 《Journal of the American Water Resources Association》1996,32(6):1177-1186
ABSTRACT: The quality of the U.S. Army Corps of Engineers' (Corps) total dissolved gas (TDG) data base for the 1995 spring spill season was reviewed to determine the value of this information in real-time management decisions regarding river operations. We concluded that problems in transmitting, archiving, correcting and interpreting the records constitute significant sources of data anomalies that affect the accuracy and reliability of information necessary to manage spill and TDG in the Columbia and Snake rivers. The data base that was reviewed covers 25 selected Columbia and Snake river stations, and includes real-time TDG data needed to regulate spill operations to maintain gas levels within state water quality standards and to monitor effects on fish and aquatic life during the salmon migration season. A wide range of anomalies (daily averages missing or in error or based on incomplete records) was detected in more than one-third (37 percent) of the Corps' gas data base. Extreme anomalies (daily averages including errors and discontinuities for more than eight hours in a day) were found in 16 percent of the data base. The Fish Passage Center, also reviewed the Corps' data and reported an overall 33 percent incidence of anomalous days. Despite arriving at similar findings about the Corps' data base, we detected a 28 percent discrepancy in the type of data anomalies between our analyses. Real. time improvements in the quality of the dissolved gas data base are necessary to provide managers with a reliable product from this monitoring effort. 相似文献
53.
Ratto G Videla F Almandos JR Maronna R Schinca D 《Environmental monitoring and assessment》2006,121(1-3):327-342
This article presents and discusses SO(2) (ppbv) concentration measurements combined with meteorological data (mainly wind speed and direction) for a five-year campaign (1996 to 2000), in a site near an oil refinery plant close to the city of La Plata and surroundings (aprox. 740.000 inh.), considered one of the six most affected cities by air pollution in the country. Since there is no monitoring network in the area, the obtained results should be considered as medium term accumulated data that enables to determine trends by analyzing together gas concentrations and meteorological parameters. Preliminary characterization of the behaviour of the predominant winds of the region in relation with potential atmospheric gas pollutants from seasonal wind roses is possible to carry out from the data. These results are complemented with monthly averaged SO(2) measurements. In particular, for year 2000, pollutant roses were determined which enable predictions about contamination emission sources. As a general result we can state that there is a clear increase in annual SO(2) concentration and that the selected site should be considered as a key site for future survey monitoring network deployment. Annual SO(2) average concentration and prevailing seasonal winds determined in this work, together with the potential health impact of SO(2) reveals the need for a comprehensive and systematic study involving particulate matter an other basic pollutant gases. 相似文献
54.
The effects of global change and globalization of trade on the biosphere spur an increase in bioinvasions and their subsequent impact on ecosystems. Continental invading bivalves are important because of their impact on artificially-constructed structures. Limnoperna fortunei was first found in the Neotropical region in 1991. Since then it has dispersed upstream in the Plata and Guaíba basins at a rate of 240 km y(-1). This species causes macrofouling in a manner similar to that caused by Dreissena polymorpha. This paper describes the biology of L. fortunei larvae from a hydroelectric power plant in South America. We suggest the importance of knowing the biology of the invading species and the need to consider the settlement patterns and densities of larvae in each of the sectors of the facility in order to achieve a sustainable prevention/control of macrofouling. This study acquires a global significance under the assumption that L. fortunei will eventually invade North America and Europe. 相似文献
55.
Karina A. Rìos-Montes Roberto Briones-Gallardo Gustavo Peñuela 《Journal of environmental science and health. Part. B》2017,52(4):274-281
The most efficient system of horizontal subsurface flow constructed wetlands (HSSFCW) for removing dissolved organic carbon (DOC) in the presence of chlorothalonil pesticide (CLT) present in synthetic domestic wastewater was determined using the macrophyte Phragmites australis. Two concentrations of CLT (85 and 385 μg L?1) and one concentration of glucose (20 mg L?1) were evaluated in four pilot scale horizontal surface flow constructed wetlands coupled with two sizes of silica gravel, igneous gravel, fine chalky gravel (3.18–6.35 mm), coarse gravel (12.70–25.40 mm) and two water surface heights (20 and 40 cm). For a month, wetlands were acclimated with domestic wastewater. Some groups of bacteria were also identified in the biofilm attached to the gravel. In each treatment periodic samplings were conducted in the influent and effluent. Chlorothalonil was quantified by gas chromatography (GC-ECD m), DOC by an organic carbon analyzer and bacterial groups using conventional microbiology in accordance with Standard Methods. The largest removals of DOC (85.82%–85.31%) were found when using fine gravel (3.18–6.35 mm) and the lower layer of water (20 cm). The bacterial groups quantified in the biofilm were total heterotrophic, revivable heterotrophic, Pseudomonas and total coliforms. The results of this study indicate that fine grain gravel (3.18–6.35 mm) and both water levels (20 to 40 cm) can be used in the removal of organic matter and for the treatment of agricultural effluents contaminated with organo-chloride pesticides like CLT in HSSFCW. 相似文献
56.
Martins Amanda Weege S. Silveira Tony L. R. Remião Mariana H. Domingues William Borges Dellagostin Eduardo N. Junior Antônio Sergio Varela Corcini Carine D. Costa Patrícia G. Bianchini Adalto Somoza Gustavo M. Robaldo Ricardo B. Campos Vinicius Farias 《Environmental science and pollution research international》2021,28(46):65127-65139
Environmental Science and Pollution Research - Roundup Transorb® (RDT) is a glyphosate-based herbicide commonly used in agricultural practices worldwide. This herbicide exerts negative effects... 相似文献
57.
Gustavo Muniz Dias Luiz Francisco Lembo Duarte Vera Nisaka Solferini 《Marine Biology》2006,148(4):807-815
Pelagic larvae are highly important for maintaining the gene flow among populations of sessile marine invertebrates. Colonial
ascidians consist, exclusively, of brooding species, with lecithotrophic larvae that have a limited dispersal. As a result,
there is a marked differentiation among populations. In this work, we used allozyme electrophoresis to access the genetic
variation in four populations of Symplegma rubra, a colonial ascidian frequently found in the intertidal zone of Southeastern Brazilian coast. High variability was found
at three of the four sites sampled, the exception being Praia Grande in the State of Rio de Janeiro. At this site, there was
a great preponderance of clones, which possibly reflected the enclosed nature of the location and its low water circulation
that reduce the dispersal capabilities of these animals. S. rubra did not conform to expectations for random mating (Hardy–Weinberg equilibrium): there was a deficit of heterozygotes that
was more related to the small population size than to inbreeding processes, since F
is analysis per locus revealed a deficiency of heterozygotes at only one locus—MDH*. The greatest variation in allele frequency was found for GPI-2*. Analyses of genetic variability revealed moderate differentiation among the populations (F
ST=0.051), which was unexpected for a species with a low dispersal capability. Rafting, a frequently underestimated means of
dispersal, may be the main mode of gene flow in this species over large areas, since colonies of S. rubra are frequently seen growing on drift material and there is no evidence that the larva survive for a long time in the plankton. 相似文献
58.
Shira Silverstein Israela Lerer Michal Sagi Ayala Frumkin Ziva Ben-Neriah Dvorah Abeliovich 《黑龙江环境通报》2002,22(8):649-651
Forty-two fetuses with non-homologous Robertsonian translocations were analyzed for uniparental disomy (UPD). One fetus with a de novo translocation t(13q;14q) had maternal isodisomy of chromosome 14. In a summary of the published data (including the present study), 315 cases were analyzed for UPD after prenatal diagnosis of balanced Robertsonian translocations, of these two fetuses had UPD, giving a risk estimate of 0.65% (CI 0.2–2.3). This risk justifies the recommendation of UPD analysis in fetuses diagnosed prenatally with Robertsonian translocations, with the emphasis on the chromosomes known to contain imprinted genes, such as 14 and 15. We also discuss the possibility of UPD in offspring of Robertsonian translocation carriers with normal karyotype. Based on the risk for UPD in fetuses with Robertsonian translocation we suggest to test these fetuses for UPD and to do so on amniocytes rather than chorionic villi when the risk for unbalanced karyotype is ∼1%, comparable to the risk for UPD. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
59.
Martínez Jaxiry Shamara Barroso González Antonia Sandoval López Mónica Cerro Ayala Fabricio Espejel Mijangos Jesús Cárdenas de Jesús Treviño Reséndez José Vöng Yunny Meas Rocha Juan Manríquez Bustos Erika Bustos 《Environmental science and pollution research international》2022,29(28):42130-42145
Environmental Science and Pollution Research - One of the most widely used antibiotics is amoxicillin (AMX), which is the most widely used in humans and animals, but it is discharged metabolically... 相似文献
60.
Riveros Gustavo Urrutia Homero Araya Juan Zagal Erick Schoebitz Mauricio 《Environmental science and pollution research international》2022,29(6):7997-8011
Environmental Science and Pollution Research - Microplastics (MPs) correspond to plastics between 0.1 μm and 5 mm in diameter, and these can be intentionally manufactured to be microscopic or... 相似文献