全文获取类型
收费全文 | 709篇 |
免费 | 3篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 19篇 |
废物处理 | 37篇 |
环保管理 | 79篇 |
综合类 | 127篇 |
基础理论 | 101篇 |
污染及防治 | 252篇 |
评价与监测 | 63篇 |
社会与环境 | 39篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 9篇 |
2022年 | 22篇 |
2021年 | 17篇 |
2020年 | 13篇 |
2019年 | 7篇 |
2018年 | 19篇 |
2017年 | 24篇 |
2016年 | 31篇 |
2015年 | 25篇 |
2014年 | 44篇 |
2013年 | 78篇 |
2012年 | 51篇 |
2011年 | 55篇 |
2010年 | 30篇 |
2009年 | 33篇 |
2008年 | 53篇 |
2007年 | 34篇 |
2006年 | 35篇 |
2005年 | 37篇 |
2004年 | 20篇 |
2003年 | 23篇 |
2002年 | 13篇 |
2001年 | 6篇 |
2000年 | 3篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 6篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1986年 | 2篇 |
1982年 | 1篇 |
1978年 | 1篇 |
1973年 | 1篇 |
1954年 | 1篇 |
排序方式: 共有720条查询结果,搜索用时 23 毫秒
61.
Iván N. Pérez-Maldonado Antonio Trejo-Acevedo Lucia Guadalupe Pruneda-Alvarez Octavio Gaspar-Ramirez Selene Ruvalcaba-Aranda Francisco Javier Perez-Vazquez 《Environmental monitoring and assessment》2013,185(11):9287-9293
The aim of this study was to evaluate the DDT, DDE, and 1-hydroxypyrene exposure levels of children living in communities located in southeastern Mexico. The study communities were Lacanja and Victoria in Chiapas state and Ventanilla in Oaxaca state. Children living in Lacanja had total blood DDT levels (mean?±?SD, 29,039.6?±?11,261.4 ng/g lipid) that were significantly higher than those of children in Victoria (10,220.5?±?7,893.1 ng/g lipid) and Ventanilla (11,659.7?±?6,683.7 ng/g lipid). With respect to the 1-hydroxypyrene levels in urine samples, the levels in Lacanja (4.8?±?4.1 μg/L or 4.5?±?3.9 μmol/mol creatinine) and Victoria (4.6?±?3.8 μg/L or 3.9?±?3.0 μmol/mol Cr) were significantly higher than levels found in Ventanilla (3.6?±?1.4 μg/L or 2.5?±?0.5 μmol/mol Cr). In conclusion, our data indicate high levels of exposure in children living in the communities studied in this work. The evidence found in this study could be further used as a trigger to revisit local policies on environmental exposures. 相似文献
62.
63.
64.
José Antonio Orosa Gholamreza Roshan Saeed Negahban 《Environmental monitoring and assessment》2014,186(3):1889-1898
In present research work the effect of climate change over the humidex in Iran is analyzed. From this research, we can conclude that the PDIAQ index showed a special sensibility to changes in temperature and relative humidity, hence, it can be an interesting tool, may be even better than the humidex to show the expected effect of climate change in perception of air quality. Thus, it was found that the humidex expected in the future will be more elevated than that in the preceding period and, on the other hand, the PDWRC has clearly reached a lower value than in the preceding period. The same effects, other than those using the earlier indexes in a more detailed manner, were observed with the PDIAQ. This index showed a higher sensitivity to variations in temperature and relative humidity, than the humidex. Finally, the main results obtained must be considered at the time of design and during construction of future buildings, since buildings that are being constructed today will be occupied in the future years of the 2100s. 相似文献
65.
The ‘scope for growth’ (SFG) tool was used to study the growth performance of cultivated populations of Mytilus galloprovincialis (Lmk., 1819) in an oligotrophic area of the Southern Mediterranean Sea. The study was carried out between 1993 and 1996 by
using data from four seasonal oceanographic cruises and from growth experiments. Water samples were collected and analysed
for total suspended matter (TSM), particulate organic carbon (POC) and nitrogen (PON), particulate lipids, proteins and carbohydrates
and chloropigments. The sum of the carbon equivalents of carbohydrates, proteins and lipids is indicated as the total biopolymeric
particulate organic carbon (BPC) and was converted into a unit of energy in order to calculate the SFG of a theoretical mussel
of 5 cm length. In order to test the performance of mussel growth at two depths (5 and 15 m water depth), mussel body size
[as ash free dry weight (AFDW)] and the actual concentrations of BPC were used to calculate the monthly SFG using the physiological
energetic relationships suggested in the current literature. Data from the field cruises led us to characterise the study
site as ultra-oligotrophic (annual average of chloropigment concentration approximately 0.5 μg L−1). SFG calculations allowed us to identify a site where mussels grown successively were found to reach a commercial size in
approximately 12 months. The good agreement obtained between energetic response and subsequent production response suggests
that the available energy from particulate food could be fully available for organic production for maintaining “proportionate”
growth trajectories, even in a ultra-oligotrophic system. 相似文献
66.
Stefan Gelcich Miriam Fernández Natalio Godoy Antonio Canepa Luis Prado Juan Carlos Castilla 《Conservation biology》2012,26(6):1005-1015
Territorial user rights for fisheries have been advocated as a way to achieve sustainable resource management. However, few researchers have empirically assessed their potential as ancillary marine conservation instruments by comparing them to no‐take marine protected areas. In kelp (Lessonia trabeculata) forests of central Chile, we compared species richness, density, and biomass of macroinvertebrates and reef fishes among territorial‐user‐right areas with low‐level and high‐level enforcement, no‐take marine protected areas, and open‐access areas in 42 100‐m subtidal transects. We also assessed structural complexity of the kelp forest and substratum composition. Multivariate randomized permutation tests indicated macroinvertebrate and reef fish communities associated with the different access regimes differed significantly. Substratum composition and structural complexity of kelp forest did not differ among access regimes. Univariate analyses showed species richness, biomass, and density of macroinvertebrates and reef fishes were greater in highly enforced territorial‐user‐right areas and no‐take marine protected areas than in open‐access areas. Densities of macroinvertebrates and reef fishes of economic importance were not significantly different between highly enforced territorial‐user‐right and no‐take marine protected areas. Densities of economically important macroinvertebrates in areas with low‐level enforcement were significantly lower than those in areas with high‐level enforcement and no‐take marine protected areas but were significantly higher than in areas with open access. Territorial‐user‐right areas could be important ancillary conservation instruments if they are well enforced. Derechos de Usuario Territoriales para Pesquerías como Instrumentos Accesorios para la Conservación Marina Costera en Chile 相似文献
67.
68.
69.
Ferronato Navarro Moresco Luca Guisbert Lizarazu Gabriela Edith Gorritty Portillo Marcelo Antonio Conti Fabio Torretta Vincenzo 《Environmental science and pollution research international》2023,30(4):8548-8562
Environmental Science and Pollution Research - Construction and demolition waste (CDW) and municipal solid waste (MSW) are the waste flows mostly generated at a global level. In developing... 相似文献
70.
Linice Vasconcelos Cavalcante Bonaparte Antonio Tavernard Pereira Neto Luis Gonzaga Sales Vasconcelos Romildo Pereira Brito José Jaílson Nicácio Alves 《Process Safety and Environmental Protection》2010,88(5):372-379
This is a case study of contamination by a non-aqueous phase liquid (NAPL) that leaked from a chemical plant. The remediation procedure adopted for the initial phase of the plume migration was a plastic diaphragm wall coupled with a series of water extraction wells designed to avoid environmental impact on the surrounding ecosystems. Monitoring has shown that the containment is successful, and additional measures that contribute to accelerating remediation have been adopted. The authors wished to investigate how remediation might be further enhanced. The use of in situ aeration coupled with a system of soil vapor extraction (AS/SVE) has been chosen, since the remediation of sites with characteristics similar to those in this study, if based exclusively on dissolved-phase control, would take several decades to be completed. The transport of contaminant plumes has been simulated by using an analytical model to evaluate the effectiveness of the natural attenuation of the contaminant. The results of the simulation have confirmed the limited effectiveness of the natural attenuation of the contaminant, as well as the effective increase of remediation that would occur if the AS/SVE system is applied. A sensitivity analysis that included several combinations of increments of parameters that correspond to the decay rate of the source and the dissolved plume has simulated what might happen if the AS/SVE system is implemented. 相似文献