全文获取类型
收费全文 | 150篇 |
免费 | 3篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 3篇 |
废物处理 | 8篇 |
环保管理 | 11篇 |
综合类 | 11篇 |
基础理论 | 27篇 |
污染及防治 | 56篇 |
评价与监测 | 25篇 |
社会与环境 | 16篇 |
出版年
2023年 | 5篇 |
2022年 | 9篇 |
2021年 | 14篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 9篇 |
2017年 | 5篇 |
2016年 | 8篇 |
2015年 | 6篇 |
2014年 | 11篇 |
2013年 | 20篇 |
2012年 | 13篇 |
2011年 | 8篇 |
2010年 | 5篇 |
2009年 | 4篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 6篇 |
2005年 | 5篇 |
2004年 | 3篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1996年 | 1篇 |
1969年 | 1篇 |
1960年 | 1篇 |
1956年 | 1篇 |
1954年 | 1篇 |
排序方式: 共有157条查询结果,搜索用时 562 毫秒
131.
Iswarya Velu Palanivel Abirami Chandrasekaran Natarajan Mukherjee Amitava 《Environmental science and pollution research international》2019,26(12):11998-12013
Environmental Science and Pollution Research - In the current study, the effect of different types of titanium dioxide (TiO2) nanoparticles (NPs) (rutile, anatase, and mixture) was analyzed on... 相似文献
132.
David S. Pal Rajan Tripathee Matthew C. Reid Karina V. R. Schäfer Peter R. Jaffé 《Environmental monitoring and assessment》2018,190(3):176
Biogeochemical processes in wetland soils are complex and are driven by a microbiological community that competes for resources and affects the soil chemistry. Depending on the availability of various electron acceptors, the high carbon input to wetland soils can make them important sources of methane production and emissions. There are two significant pathways for methanogenesis: acetoclastic and hydrogenotrophic methanogenesis. The hydrogenotrophic pathway is dependent on the availability of dissolved hydrogen gas (H2), and there is significant competition for available H2. This study presents simultaneous measurements of dissolved methane and H2 over a 2-year period at three tidal marshes in the New Jersey Meadowlands. Methane reservoirs show a significant correlation with dissolved organic carbon, temperature, and methane emissions, whereas the H2 concentrations measured with dialysis samplers do not show significant relationships with these field variables. Data presented in this study show that increased dissolved H2 reservoirs in wetland soils correlate with decreased methane reservoirs, which is consistent with studies that have shown that elevated levels of H2 inhibit methane production by inhibiting propionate fermentation, resulting in less acetate production and hence decreasing the contribution of acetoclastic methanogenesis to the overall production of methane. 相似文献
133.
Thiagarajan Vignesh Ramasubbu Seenivasan Natarajan Chandrasekaran Mukherjee Amitava 《Environmental science and pollution research international》2019,26(21):21394-21403
Environmental Science and Pollution Research - The use of P25 TiO2 NPs in consumer products, their release, and environmental accumulation will have harmful effects on the coastal ecosystems. The... 相似文献
134.
River channel migration is the universal phenomenon that is common in almost all alluvial rivers. The holy River Ganga, the heartbeat of India, is also not an exception in this case. It has shifted its course from time to time. After crossing the Rajmahal hills that is situated in the north-eastern corner of the Chota Nagpur plateau, this main river of India has started its lower course by flowing over the great low-lying flat plain of Bengal. In this flat plain area, the channel migration is a common phenomenon which is observed in the River Ganga also. The study is done in the segment of the Ganga River which is situated in the Diara surrounding area. Diara is a physical cum administrative region of the Malda district of the state of West Bengal of India which occupies an area of almost 900 km2. For the identification of channel migration zone, several methods are used like construction of historical migration zone (HMZ), erosion buffer (EB), avulsion potential zone (APZ), restricted and un-restricted migration area (RMA and UrMA) and retreating migration zone (RMZ). The impact of the channel migration over the villages of the Diara region has also been depicted in this study. Remote Sensing and Geographical Information System (RS–GIS) is used to perform this study by taking the help of historical maps, Survey of India topographical sheets, LANDSAT imageries, etc. The results show that the river has a historical migration zone of 855.55 km2 during 1926–2016 period which is near the entire area of the Diara region (i.e. 900 km2). The construction of EB over the Ganga River for the next 100 years shows that more than half of the area of the Diara region will go under the river bed. 相似文献
135.
Swades?Pal Sandipta?DebanshiEmail author 《Environment, Development and Sustainability》2018,20(4):1739-1775
Soil erosion in the upper catchment of lateritic belt of the Mayurakshi River is one of the major problems. Excessive soil erosion leads the gully head bundhs (reservoir) hyper sedimented. These bundhs were constructed under Massanjore Dam projects for arresting soil erosion and reducing sedimentation rate in the reservoir of the Massanjore Dam. This paper intended to investigate the present state of gully head reservoirs in connection with sedimentation and find out whether these vulnerable gully head bundhs are located at the extremely soil erosion susceptible zone. Soil erosion and gully head over loading vulnerability models generated in this aim, and it is found that highly vulnerable gully head bunds are located at the excessive soil erosion zone and therefore these two models are spatially correlated. It is revealed that in the extremely susceptible soil erosion zone, 105 nos. or 52.5% to total extremely overloading vulnerable gully head bundhs are located and frequency density of them in the same area is 0.1204 nos./sq km. From this spatial adjacency, it can be stated that extreme soil erosion susceptibility and soil loss (19.62 Mg/ha/year) are principally responsible for making the reservoirs vulnerable. These reservoirs play vital role for arresting soil erosion, and as these are not evenly distributed even in the extremely soil erosion susceptible zone, more number of such reservoirs can be installed there. 相似文献
136.
Harminder Pal Singh Daizy R. Batish Kuldip Singh Dogra Shalinder Kaur Ravinder Kumar Kohli Anjana Negi 《Environmental monitoring and assessment》2014,186(6):3379-3389
Lantana camara, an aromatic shrub, native to tropical America, was introduced into India for ornamental hedging, but later escaped and became a serious invasive weed. This study assessed the quantitative and qualitative status of plant community richness and diversity in areas invaded by L. camara in the Siwalik Hills (Himachal Pradesh, India), and explored allelopathy as a possible mechanism of interference. We measured species diversity, richness and evenness of the vegetation in areas invaded and uninvaded by L. camara. Allelopathic effects of L. camara rhizosphere soil and litter were assessed against two native plants—Achyranthes aspera (a herb) and Albizia lebbeck (a tree). Density, biomass and indices of diversity, richness and evenness were reduced by L. camara, indicating a significant alteration in composition and structure of native communities. Seedling growth of the test species was reduced in L. camara rhizosphere- and litter-amended soil. The inhibitory effect was ameliorated by the addition of activated charcoal, indicating the presence of organic inhibitors (quantified as phenolics) in the soil. Lantana invasion greatly reduces the density and diversity of the vegetation in the invaded area, and chemical interference of its litter plays an important role in invasion. 相似文献
137.
Supriya Pal Somnath Mukherjee Sudipta Ghosh 《Environmental science and pollution research international》2014,21(7):5249-5261
Laboratory-scale batch, vertical, and horizontal column experiments were conducted to investigate the attenuative capacity of a fine-grained clayey soil of local origin in the surrounding of a steel plant wastewater discharge site in West Bengal, India, for removal of phenol. Linear, Langmuir, and Freundlich isotherm plots from batch experimental data revealed that Freundlich isotherm model was reasonably fitted (R 2?=?0.94). The breakthrough column experiments were also carried out with different soil bed heights (5, 10, and 15 cm) under uniform flow to study the hydraulic movements of phenol by evaluating time concentration flow behavior using bromide as a tracer. The horizontal migration test was also conducted in the laboratory using adsorptive phenol and nonreactive bromide tracer to explore the movement of solute in a horizontal distance. The hydrodynamic dispersion coefficients (D) in the vertical and horizontal directions in the soil were estimated using nonlinear least-square parameter optimization method in CXTFIT model. In addition, the equilibrium convection dispersion model in HYDRUS 1D was also examined to simulate the fate and transport of phenol in vertical and horizontal directions using Freundlich isotherm constants and estimated hydrodynamic parameters as input in the model. The model efficacy and validation were examined through statistical parameters such as the coefficient of determination (R 2), root mean square error and design of index (d). 相似文献
138.
Novel degradation pathway of 4-chloro-2-aminophenol via 4-chlorocatechol in Burkholderia sp. RKJ 800
Pankaj Kumar Arora Alok Srivastava Vijay Pal Singh 《Environmental science and pollution research international》2014,21(3):2298-2304
Burkholderia sp. RKJ 800 utilized 4-chloro-2-aminophenol (4C2AP) as the sole carbon and energy source and degraded it with release of chloride and ammonium ions. The metabolic pathway of degradation of 4C2AP was studied and a novel intermediate, 4-chlorocatechol was identified as a major degradation product of 4C2AP using high-performance liquid chromatography and gas chromatography–mass spectrometry. Enzyme activities for 4C2AP-deaminase and 4-chlorocatechol-1,2-dioxygenase were detected in the crude extracts of the 4C2AP-induced cells of strain RKJ 800. The activity of the 4C2AP-deaminase confirmed the formation of 4-chlorocatechol from 4C2AP and the 4-chlorocatechol-1,2-dioxygenase activity suggested the cleavage of 4-chlorocatechol into 3-chloro-cis,cis-muconate. On the basis of the identified metabolites, we have proposed a novel degradation pathway of 4C2AP for Burkholderia sp. RKJ 800. Furthermore, the potential of Burkholderia sp. RKJ 800 to degrade 4C2AP in soil was also investigated using microcosm studies under laboratory conditions. The results of microcosm studies conclude that Burkholderia sp. RKJ 800 was able to degrade 4C2AP in soil and may be used to remediate 4C2AP-contaminated site. This is the first report of (1) the formation of 4-chlorocatechol and 3-chloro-cis,cis-muconate in the degradation pathway of 4C2AP and (2) bioremediation of 4C2AP by any bacterium. 相似文献
139.
Jaswinder Singh Sharanpreet Singh Adarsh Pal Vig 《Environment, Development and Sustainability》2016,18(6):1521-1539
Earthworms are so closely incorporated into the soil structure that they are not calculated easily from the soil. Due to this property, their extraction from soil is tedious and time-consuming. Different methods have been used for their extraction from the soil, and efficiency of each method is affected by physical properties, viz., temperature and moisture of the soil. This study explored the advantage and disadvantage of different sampling methods for the extraction of earthworms such as hand sorting, octet method, formalin method, mustard extraction method, allyl isothiocyanate (AITC), and onion extraction method. Extraction efficiency of formalin is 20–60 times more as compared to hand sorting, but hand sorting gives satisfactory results for earthworms of more than 0.2 g live weight, and cocoons can also be recovered by this method. Octet method is effective in extracting anecic species and could easily be applied to site where chemical extraction is not a viable option. Extraction by mustard and AITC is simple, low cost, and more efficient for the extraction of deep-burrowing anecic species. The onion extraction solution is low cost and nontoxic which can be used as alternative to formalin. Like mustard, the onion solution is also inexpensive and not harmful to the earthworms and environment. 相似文献
140.