全文获取类型
收费全文 | 134篇 |
免费 | 1篇 |
专业分类
安全科学 | 7篇 |
废物处理 | 2篇 |
环保管理 | 19篇 |
综合类 | 36篇 |
基础理论 | 32篇 |
污染及防治 | 29篇 |
评价与监测 | 7篇 |
社会与环境 | 3篇 |
出版年
2022年 | 1篇 |
2021年 | 2篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 4篇 |
2017年 | 8篇 |
2016年 | 8篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 17篇 |
2012年 | 6篇 |
2011年 | 6篇 |
2010年 | 6篇 |
2009年 | 12篇 |
2008年 | 7篇 |
2007年 | 5篇 |
2006年 | 13篇 |
2005年 | 4篇 |
2004年 | 8篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 2篇 |
1998年 | 1篇 |
1994年 | 1篇 |
排序方式: 共有135条查询结果,搜索用时 390 毫秒
101.
This article examines energy priorities for Thailand from the economic, social and environmental perspectives of sustainable development. The article uses a set of indicators devised by the International Atomic Energy Agency in partnership with other international agencies and research institutes in seven countries. Thailand's energy efficiency in the 1980s and 1990s are analysed using energy intensity indicators, and possible impacts on sustainable energy development are highlighted. The early 1990s in particular was an important period for Thailand, as the country was at the height of its economic growth, and a number of energy efficiency and conservation programmes were launched. Energy intensity indicators show continuing and faster growth in energy consumption relative to economic activity. The financial crisis in the late 1990s did halt growth in energy consumption, with positive consequences on environmental emissions, but only temporarily as Thailand's economy quickly started to recover in 2000. Notwithstanding the financial crisis, the other indicators show significant progress in economic and social dimensions. 相似文献
102.
Salvatore Collura Bruno Azambre Gisèle Finqueneisel Thierry Zimny Jean Victor Weber 《Environmental Chemistry Letters》2006,4(2):75-78
In this paper we present, for the first time, data on the combustion of Miscanthus × Giganteus straw and pellets. We found that the heating value of Miscanthus is 17.744 MJ/kg. The gaseous emission indices of SO2, NO
x
and total organic carbon (TOC) in the exhaust are reported and compared with the European standards for biomass boilers. On the basis of our results, it is possible to evaluate a net energy yield between 152 and 326 MJ/hectare/year for the cultivation of Miscanthus with an energy balance estimated to be in the range of 7.7–15.4. According to the presented results, it seems reasonable to consider Miscanthus as a promising candidate as alternative fuel. 相似文献
103.
Jean-François Vautier Nicolas Dechy Thierry Coye de Brunélis Guillaume Hernandez Richard Launay Diana Paola Moreno Alarcon 《The Environmentalist》2018,38(3):353-366
This paper highlights the value of systems theory and its application to human and organizational factors (HOF). HOF specialists consider multiple systems characteristics in their analyses but are often unaware of the relevant theory applied in their analysis. We argue that a structured effort to take key systems characteristics into account in HOF practice would increase the depth and breadth of safety management analyses and help HOF specialists to act more effectively on industrial socio-technical systems. First, the paper identifies the following seven system theory characteristics: constitution, multi-axis representation, limit, emergence, variety, coherence, and causal interaction, which are then illustrated with examples from the HOF field. Finally, we discuss the two main benefits of integrating system thinking in a HOF approach to safety management: (1) an improved understanding of the inner workings of an industrial socio-technical system; and (2) a compendium or a reference to guide for decision-making and the implementation of actions within the industrial socio-technical systems. 相似文献
104.
This article describes the application of in-situ bioremediation for the treatment of an aquifer contaminated with 1,2-dichloroethane (DCA). The first step in the process was to properly delineate the contamination and to contain the contaminated groundwater using a pumping well. The second step was to isolate in the groundwater microorganisms able to degrade DCA and to demonstrate the possibility of increasing their efficiency by injecting in-situ nutrients and hydrogen peroxide (H2O2) solution. In the third step, after the characterization of the hydrogeology of the aquifer with tracing experiments, the in-situ bioremediation of the groundwater was conducted. The analyses show that 95 percent of DCA was destroyed by this treatment, leading to a DCA concentration around the pumping well of about 0.2 mg/l. 相似文献
105.
Recent studies on the ant phylogeny are mainly based on the molecular analyses of extant subfamilies and do not include the extinct, only Cretaceous subfamily Sphecomyrminae. However, the latter is of major importance for ant relationships, as it is considered the most basal subfamily. Therefore, each new discovery of a Mesozoic ant is of high interest for improving our understanding of their early history and basal relationships. In this paper, a new sphecomyrmine ant, allied to the Burmese amber genus Haidomyrmex, is described from mid-Cretaceous amber of France as Haidomyrmodes mammuthus gen. and sp. n. The diagnosis of the tribe Haidomyrmecini is emended based on the new type material, which includes a gyne (alate female) and two incomplete workers. The genus Sphecomyrmodes, hitherto known by a single species from Burmese amber, is also reported and a new species described as S. occidentalis sp. n. after two workers remarkably preserved in a single piece of Early Cenomanian French amber. The new fossils provide additional information on early ant diversity and relationships and demonstrate that the monophyly of the Sphecomyrminae, as currently defined, is still weakly supported. 相似文献
106.
Vona Méléder Jacques Populus Brigitte Guillaumont Thierry Perrot Pascal Mouquet 《Marine Biology》2010,157(7):1525-1541
Predictive modelling to map subtidal communities is an alternative to “traditional” methods, such as direct sampling, remote
sensing and acoustic survey, which are neither time- nor cost-effective for vast expanses. The principle of this modelling
is the use of a combination of environmental key parameters to produce rules to understand species distribution and hence
generate predictive maps. This study focuses on subtidal kelp forests (KF) on the coast of Brittany, France. The most significant
key parameters to predict KF frequency are (1) the nature of the substrate, (2) depth, (3) water transparency, (4) water surface
temperature and (5) hydrodynamics associated with the flexibility of algae in a flow. All these parameters are integrated
in a spatial model, built using a Geographical Information System. This model results in a KF frequency map, where sites with
optimum key parameters show a deeper limit of disappearance. After validation, the model is used in the context of Climate
Change to estimate the effect of environmental variation on this depth limit of KF. Thus, the effects of both an increase
in water temperature and a decrease in its transparency could lead to the complete disappearance of KF. 相似文献
107.
Male competition for mates and female mate choice are key mechanisms involved in sexual selection. Surprisingly, these mechanisms
have often been investigated separately although they appear to interact in many species. Male–male competition for territories
located at the best places or to establish dominance relationships often explain mating patterns. Such male behaviours may
affect and sometimes even hinder female mate choice, as in the case of sexual coercion. While in many species females are
able to exert cryptic control over paternity (i.e. a process allowing females to bias offspring production toward certain
males after intromission), in other species external fertilisation prevents females from doing so. This is the case in the
waterfrog hybridisation complex where the hybrid Pelophylax esculentus can only produce viable offspring by pairing with the parental species Pelophylax lessonae (hybridogenetic reproduction). We examined two potential processes that could enhance such mating combinations. Firstly,
by monitoring male spatial distribution within six choruses, we showed that the proportion of P. lessonae males located at the edge (in the best position to grasp females arriving at the chorus) cannot explain the frequency of
mating combinations observed. Secondly, an experimental approach emphasised a new way for anuran females to favour paternity
of a particular male in a sexual coercion context. When females are forcefully paired with an incompatible male, they cannot
remove the male grasped on their back by themselves. Nevertheless, by controlling the movement of the pair within the chorus,
these females often change mates by enhancing male competition instead of laying eggs. In many species with externally fertilised
eggs, it may be thus necessary to take into account this new possibility for females to control offspring paternity. 相似文献
108.
Heidi Van den Broeck Karin Breugelmans Hans De Wolf Thierry Backeljau 《Marine Biology》2008,153(3):421-429
Planktonic developing organisms are generally assumed to be good dispersers showing little genetic structuring in neutral
markers. At first glance, this also applies to the planktonic developing periwinkle Tectarius striatus, an endemic gastropod from Macaronesia (i.e. Azores, Madeira, Canary Islands and Cape Verde Islands), where the only sign
of genetic structuring hitherto is provided by a non-significant allozyme/RAPD heterogeneity between the Cape Verde Islands
and the other archipelagos. However, partial sequences of the mitochondrial cytochrome b and cytochrome oxidase I genes now show that the Cape Verde Islands and the three other archipelagos have no haplotypes in
common, whereas the latter three do share several haplotypes. Nevertheless, this highly disjunct haplotype distribution does
not entail a phylogeographic break separating the haplotypes of both areas in two reciprocally monophyletic groups. This remarkable
geographic and phylogenetic structuring may be explained by assuming that T. striatus colonized the Macaronesian archipelagos in periods when sea levels were lower (and/or volcanic activity was higher), so that
seamounts peaked above sea level and could act as stepping-stones. Yet, after the last glacial period seamounts submerged,
thus preventing further stepping-stones mediated dispersal of T. striatus between the Cape Verde Islands and the other archipelagos, while not affecting dispersal among the latter because of their
closer proximity and connectivity. Hence, these contrasting patterns of neutral genetic variation in T. striatus show that genetic structuring in planktonic developing species may be far more complex than is usually assumed. 相似文献
109.
Péron Olivier Suzuki-Muresan Tomo Abdillahi Danis Gaudin Pierre Abdelouas Abdesselam Lebeau Thierry 《Environmental Chemistry Letters》2019,17(1):521-526
Environmental Chemistry Letters - Radioactive Cs contamination is a major concern in case of a nuclear accident such as the Fukushima accident in 2011. Remediation methods have been proposed... 相似文献
110.
Thuoc Van Chu Jean-Pascal Torréton Xavier Mari Huyen Minh Thi Nguyen Kha Thi Pham Thu The Pham Thierry Bouvier Yvan Bettarel Olivier Pringault Corinne Bouvier Emma Rochelle-Newall 《Environmental monitoring and assessment》2014,186(12):8555-8572
Phytoplankton diversity and abundance in estuarine systems are controlled by many factors. Salinity, turbidity, and inorganic nutrient concentrations and their respective ratios have all been proposed as principal factors that structure phytoplankton diversity and influence the emergence of potentially toxic species. Although much work has been conducted on temperate estuaries, less is known about how phytoplankton diversity is controlled in tropical, monsoonal systems that are subject to large, seasonal shifts in hydrology and to rapidly changing land use. Here, we present the results of an investigation into the factors controlling phytoplankton species composition and distribution in a tropical, monsoonal estuary (Bach Dang estuary, North Vietnam). A total of 245 taxa, 89 genera from six algal divisions were observed. Bacillariophyceae were the most diverse group contributing to 51.4 % of the microalgal assemblage, followed by Dinophyceae (29.8 %), Chlorophyceae (10.2 %), Cyanophyceae (3.7 %), Euglenophyceae (3.7 %) and Dictyochophyceae (1.2 %). The phytoplankton community was structured by inorganic nutrient ratios (DSi:DIP and DIN:DIP) as well as by salinity and turbidity. Evidence of a decrease in phytoplankton diversity concomitant with an increase in abundance and dominance of certain species (e.g., Skeletonema costatum) and the appearance of some potentially toxic species over the last two decades was also found. These changes in phytoplankton diversity are probably due to a combination of land use change resulting in changes in nutrient ratios and concentrations and global change as both rainfall and temperature have increased over the last two decades. It is therefore probable in the future that phytoplankton diversity will continue to change, potentially favoring the emergence of toxic species in this system. 相似文献