全文获取类型
收费全文 | 815篇 |
免费 | 6篇 |
国内免费 | 6篇 |
专业分类
安全科学 | 12篇 |
废物处理 | 62篇 |
环保管理 | 68篇 |
综合类 | 88篇 |
基础理论 | 134篇 |
污染及防治 | 294篇 |
评价与监测 | 95篇 |
社会与环境 | 74篇 |
出版年
2023年 | 15篇 |
2022年 | 50篇 |
2021年 | 63篇 |
2020年 | 24篇 |
2019年 | 23篇 |
2018年 | 41篇 |
2017年 | 35篇 |
2016年 | 56篇 |
2015年 | 21篇 |
2014年 | 40篇 |
2013年 | 76篇 |
2012年 | 34篇 |
2011年 | 58篇 |
2010年 | 33篇 |
2009年 | 35篇 |
2008年 | 36篇 |
2007年 | 29篇 |
2006年 | 40篇 |
2005年 | 25篇 |
2004年 | 22篇 |
2003年 | 13篇 |
2002年 | 11篇 |
2001年 | 8篇 |
2000年 | 5篇 |
1999年 | 3篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1978年 | 1篇 |
1970年 | 1篇 |
1968年 | 2篇 |
1957年 | 1篇 |
1938年 | 1篇 |
排序方式: 共有827条查询结果,搜索用时 640 毫秒
411.
Santos MM Vieira N Reis-Henriques MA Santos AM Gomez-Ariza JL Giraldez I Ten Hallers-Tjabbes CC 《Environment international》2004,30(6):793-798
Imposex in the gastropod Hinia reticulata, a bioindicator for tributyltin (TBT) contamination, was investigated in locations at different distances from the Oporto harbour-dredged material discharge site. The degree of imposex found was inversely related to the distance to the discharge site, the highest imposex frequency being found closest to the discharge area. However, the levels of imposex found were low when compared with those reported for H. reticulata populations from moderately TBT-contaminated areas. Despite detectable levels of dibutyltin (DBT) and monobutyltin (MBT) in snail tissues (total butyltins ranging from 84 to 410 ng/g Sn dry wt.), TBT was below detection limit in all snail samples collected in open sea. 相似文献
412.
413.
Vera S. Domingues Markos Alexandrou Vitor C. Almada D. Ross Robertson Alberto Brito Ricardo S. Santos Giacomo Bernardi 《Marine Biology》2008,154(3):465-474
The northeastern Atlantic and the Mediterranean Sea share geological histories and display great faunal affinities. The majority
of the Mediterranean species have Atlantic origins, with a few species with tropical affinities. These include the parrotfish
Sparisoma cretense and the wrasse Thalassoma pavo that are restricted to the subtropical northeastern Atlantic, the Macaronesian archipelagos (Azores, Madeira, and Canaries)
and the southern Mediterranean. The Pleistocene glaciations have been described as having different effects on the fauna of
the two regions. During glacial peaks, Mediterranean waters remained warmer than those of the adjacent Atlantic. Within the
eastern Atlantic, the effects of Pleistocene glaciations were differentiated. Here, we perform a comparative analysis focusing
on T. pavo and S. cretense populations from the northeastern Atlantic and the Mediterranean to assess the effects of Pleistocene glaciations in these
two species. Sequences from the mitochondrial control region were obtained and analyzed combining phylogeographic and demographic
approaches. Gene flow between Atlantic and Mediterranean populations was shown to be very high. The Mediterranean populations
of T. pavo and S. cretense showed high levels of genetic diversity, even in the eastern basin, pointing to an ancient colonization event. This suggests
that both species must have been able to persist in the Mediterranean during the cold Pleistocene periods. Historical migration
estimates revealed a Mediterranean towards Atlantic trend in the case of T. pavo, which may reflect the re-colonization of areas in the Atlantic by fish that survived the cold phases in relatively warmer
Mediterranean refugia. Our data also showed that within the Macaronesian Archipelagos, migrations occurred from Madeira towards
the Azores, for both T. pavo and S. cretense, thus supporting a post-glacial colonization of the Azores by fish that persisted in the warmer region of Madeira. Similar
geographic distributions, thermal affinities, and means of dispersion for T. pavo and S. cretense resulted in a similar response to the effects of Pleistocene glaciations, as evidenced by identical phylogeographic patterns. 相似文献
414.
Mónica A. Silva Rui Prieto Sara Magalhães Maria I. Seabra Ricardo S. Santos Philip S. Hammond 《Marine Biology》2008,156(2):179-192
Very little is known about the ecology of common bottlenose dolphins (Tursiops truncatus) living in oceanic waters. This study investigated the ranging and residence patterns of bottlenose dolphins occurring in
the Azores (Portugal), the most isolated archipelago in the North Atlantic. Data were collected during standardized boat-based
surveys conducted over a 6-year period in an area of approximately 5,400 km2 (main study area). To investigate the extent of movements of individual animals, non-systematic surveys were also conducted
outside this area. Only 44 individuals out of 966 identified were frequently sighted within and between years. The remaining
individuals were either temporary migrants from within or outside the archipelago, or transients. Resident dolphins showed
strong geographic fidelity to the area. Long-distance movements (of almost 300 km), consistent with foraging or exploratory
trips, were observed among non-resident dolphins. Home range size was estimated for 31 individuals sighted ≥10 times. Range
areas of these dolphins varied in size and location, but considerable overlap was observed in the areas used, suggesting the
absence of habitat partitioning between resident and non-resident dolphins. Estimates of home range size of bottlenose dolphins
in the Azores were found to be considerably larger than those previously reported for this species. It is hypothesized that
dolphins living in the Azores carry out extensive movements and have large home ranges in response to the lower density and
patchy distribution of prey compared to other areas. The extensive ranging behaviour and the lack of territoriality provide
an opportunity for interbreeding between dolphins associated with different islands, thus preventing genetic differentiation
within the population of the Azores. 相似文献
415.
Many marine organisms are fixed or highly sedentary as adults but the adult population may be strongly dependent on the oceanic transport of planktonic larvae. In order to assess interactions between oceanographic and biological processes that determine the population dynamics of marine organisms with a sessile adult phase restricted to the coastline and a planktonic larval phase, we present a stage-structured finite element model for the barnacle Balanus glandula that inhabits the rocky intertidal zone of central California, USA. 相似文献
416.
Teixeira Matheus Cesar Ricardo Abessa Denis Siqueira Celeste Lourenço Rodrigo Vezzone Mariana Fernandes Yan Koifman Gustavo Perina Fernando Cesar Meigikos dos Anjos Roberto Polivanov Helena Castilhos Zuleica 《Environmental science and pollution research international》2023,30(1):184-200
Environmental Science and Pollution Research - Urban tropical lagoons are often impacted by eutrophication, metal, and polycyclic aromatic hydrocarbon (PAH) contamination, but the toxicity of their... 相似文献
417.
Moreira Wardleison Martins Moreira Paula Valéria Viotti dos Santos Débora Federici Gimenes Marcelino Luiz Vieira Melissa Gurgel Adeodato 《Environmental science and pollution research international》2023,30(8):19564-19591
Environmental Science and Pollution Research - The lignocellulose biorefinery industry has assumed an important role within the current scenario. Lignin is an abundant and available biopolymer and... 相似文献
418.
Verona Borges Ferreira Leonardo Fontes Estrella Marcelo Guzzon Rodrigues Alves Christoph Gallistl Walter Vetter Thadia Turon Costa Silva 《Journal of environmental science and health. Part. B》2020,55(1):30-41
AbstractOrganochlorine (OCP) pesticides were determined in samples of sardine (Sardinella brasiliensis), whitemouth croaker (Micropogonias furnieri), and mullet (Mugil liza) from Guanabara Bay (state of Rio de Janeiro, Brazil). OCP concentrations and fish consumption were linked with acceptable daily intake values in order to assess the human health risk for the Brazilian population. The total concentrations of OCPs (Σ OCP) was 6.6?ng/g f.w., 7.5?ng/g f.w., and 2.8?ng/g f.w. for sardines, corvina, and mullet, respectively. There was a significant difference (P?<?0.05) among the species related to o,p’-DDD and o,p’-DDT concentrations. Both DDT-related compounds were 5 and 76 times more abundant in sardines than in whitemouth croaker and mullet. Newly discovered DDT metabolite, o-Cl-DDMU, was frequently detected in the fish. None of the samples exceeded the maximum limits for acceptable levels of OCP residues. According to the data of average intake of Brazilian population, none of three species exceeded toxicological parameter. The investigated fishes are considered as safe for human consumption in regard to exposure of the studied OCPs. However, fish may be a intake source of OCP metabolites such as o-Cl-DDMU whose toxicity is still unknown. 相似文献
419.
Metal mixtures in pregnant women and umbilical cord blood at urban populations—Rio de Janeiro,Brazil
de Figueiredo Nataly Damasceno Araújo Monica Seefelder Luiz Ronir R de Magalhaes Câmara Volney do Couto Jacob Silvana dos Santos Lisia Maria Gobbo Vicentini Santos Alves Asmus Carmen Ildes Rodrigues Froes 《Environmental science and pollution research international》2020,27(32):40210-40218
Environmental Science and Pollution Research - This study aims to assess interrelationships between serum lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) concentrations in pregnant women in... 相似文献
420.
Tayane C. R. Mesquita Rizia R. Santos Ane P. Cacique Ludimara J. De SÁ Flaviano O. Silvério 《Journal of environmental science and health. Part. B》2018,53(3):199-206
Organochlorine pesticides present in sewage sludge can contaminate soil and water when they are used as either fertilizer or agricultural soil conditioner. In this study, the technique solid–liquid extraction with low temperature purification was optimized and validated for determination of ten organochlorine pesticides in sewage sludge and soil samples. Liquid–liquid extraction with low temperature purification was also validated for the same compounds in water. Analyses were performed by gas chromatography-mass spectrometry operating in the selective ion monitoring mode. After optimization, the methods showed recoveries between 70% and 115% with relative standard deviation lower than 13% for all target analytes in the three matrices. The linearity was demonstrated in the range of 20 to 70 µg L?1, 0.5 to 60 µg L?1, and 3 to 13 µg L?1, for sludge, soil, and acetonitrile, respectively. The limit of quantification ranged between 2 and 40 µg kg?1, 1 and 6 µg kg?1, and 0.5 µg L?1 for sludge, soil, and water, respectively. The methods were used in the study of pesticide lixiviation carried out in a poly vinyl chlorine column filled with soil, which had its surface layer mixed with sludge. The results showed that pesticides are not leached into soil, part of them is adsorbed by the sewage sludge (4–40%), and most pesticides are lost by volatilization. 相似文献