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22.
Carole Bedos Sophie Génermont Edith Le Cadre Lucas Garcia Enrique Barriuso Pierre Cellier 《Atmospheric environment (Oxford, England : 1994)》2009,43(22-23):3630-3639
Volatilization of pesticides participates in atmospheric contamination and affects environmental ecosystems including human welfare. Modelling at relevant time and spatial scales is needed to better understand the complex processes involved in pesticide volatilization. Volt'Air-Pesticides has been developed following a two-step procedure to study pesticide volatilization at the field scale and at a quarter time step. Firstly, Volt'Air-NH3 was adapted by extending the initial transfer of solutes to pesticides and by adding specific calculations for physico-chemical equilibriums as well as for the degradation of pesticides in soil. Secondly, the model was evaluated in terms of 3 pesticides applied on bare soil (atrazine, alachlor, and trifluralin) which display a wide range of volatilization rates. A sensitivity analysis confirmed the relevance of tuning to Kh. Then, using Volt'Air-Pesticides, environmental conditions and emission fluxes of the pesticides were compared to fluxes measured under 2 environmental conditions. The model fairly well described water temporal dynamics, soil surface temperature, and energy budget. Overall, Volt'Air-Pesticides estimates of the order of magnitude of the volatilization flux of all three compounds were in good agreement with the field measurements. The model also satisfactorily simulated the decrease in the volatilization rate of the three pesticides during night-time as well as the decrease in the soil surface residue of trifluralin before and after incorporation. However, the timing of the maximum flux rate during the day was not correctly described, thought to be linked to an increased adsorption under dry soil conditions. Thanks to Volt'Air's capacity to deal with pedo-climatic conditions, several existing parameterizations describing adsorption as a function of soil water content could be tested. However, this point requires further investigation. Practically speaking, Volt'Air-Pesticides can be a useful tool to make decision about agricultural practices such as incorporation or for the estimation of overall pesticide volatilization rates, and it holds promise for time specific dynamics. 相似文献
23.
Toxic equivalency factors for PAH and their applicability in shellfish pollution monitoring studies 总被引:2,自引:0,他引:2
Law RJ Kelly C Baker K Jones J McIntosh AD Moffat CF 《Journal of environmental monitoring : JEM》2002,4(3):383-388
Fish and shellfish are exposed to a wide range of polycyclic aromatic hydrocarbons (PAH) following oil spills at sea, and can become contaminated as a result. Finfish have a more effective mixed-function oxidase enzyme system than shellfish, and are therefore able to metabolise and excrete PAH more effectively than the invertebrates. Thus, contamination by high-molecular weight PAH, including those with carcinogenic potential and so of concern with regard to human consumers, is therefore usually observed in shellfish, and particularly in bivalve molluscs. Oil spills are not the sole source of PAH, however, as parent compounds are also generated by a wide range of combustion processes. In this paper, consideration is given to monitoring data gathered following recent oil spills (both of crude oil and diesel fuel), alongside data from other studies. These include studies conducted around a former gasworks site and downstream of an aluminium smelter in the UK, and from mussel monitoring studies undertaken in the UK and the USA (including the Exxon Valdez oil spill and the National Status and Trends programme), and in other countries in Europe. For comparative purposes the PAH concentrations are summed and also expressed as benzo[a]pyrene equivalents, their relative concentrations being weighted in relation to the carcinogenic potential of individual PAH compounds using toxic equivalency factors (TEF). Our aim was to assess the utility of this approach in fishery resource monitoring and control following oil spills. Certainly this approach seems useful from the data assessed in this study. and the relative ranking of the various studies seems to reflect the relative degree of concern for human consumers due to the differing contamination sources. As a simple tool for control purposes it is equally applicable to PAH derived from oil spills, and from industrial and combustion sources. 相似文献
24.
Carole Lalonde 《Disasters》2010,34(2):360-379
The objective of this paper is to highlight the dimensions characterising the socialisation process in a crisis context. Based on the definition of organisational socialisation advanced by Van Maanen and Schein (1979) and employed later by Jones (1986), a crisis is presented as a passage from a ‘normal’ situation to an ‘exceptional’ situation. A crisis represents a socialisation context in the sense that it is a novel state in which actors must develop a different way of mobilising their knowledge, utilising their skills, and practicing their trade or profession. The paper discusses certain findings that have emerged from the literature on organisational socialisation, as well as from the testimony of actors who participated in efforts to manage the Quebec ice‐storm crisis of early 1998. It is hoped that this exploratory study's data will give rise to fruitful interaction between the field of organisational socialisation and that of crisis management. 相似文献
25.
Flavie Bidel Carole Di Poi Boudjema Imarazene Noussithé Koueta Hélène Budzinski Pierre Van Delft Cécile Bellanger Christelle Jozet-Alves 《Environmental science and pollution research international》2016,23(6):5030-5045
Embryonic and early postembryonic development of the cuttlefish Sepia officinalis (a cephalopod mollusk) occurs in coastal waters, an environment subject to considerable pressure from xenobiotic pollutants such as pharmaceutical residues. Given the role of serotonin in brain development and its interaction with neurodevelopmental functions, this study focused on fluoxetine (FLX), a selective serotonin reuptake inhibitor (SSRI, antidepressant). The goal was to determine the effects of subchronic waterborne FLX exposure (1 and 10 μg L?1) during the last 15 days of embryonic development on neurochemical, neurodevelopmental, behavioral, and immunological endpoints at hatching. Our results showed for the first time that organic contaminants, such as FLX, could pass through the eggshell during embryonic development, leading to a substantial accumulation of this molecule in hatchlings. We also found that FLX embryonic exposure (1 and 10 μg L?1) (1) modulated dopaminergic but not serotonergic neurotransmission, (2) decreased cell proliferation in key brain structures for cognitive and visual processing, (3) did not induce a conspicuous change in camouflage quality, and (4) decreased lysozyme activity. In the long term, these alterations observed during a critical period of development may impair complex behaviors of the juvenile cuttlefish and thus lead to a decrease in their survival. Finally, we suggest a different mode of action by FLX between vertebrate and non-vertebrate species and raise questions regarding the vulnerability of early life stages of cuttlefish to the pharmaceutical contamination found in coastal waters. 相似文献
26.
J. M. Tom Pierce Andrew B. Nash Carole A. Clouter 《Environment, Development and Sustainability》2013,15(6):1645-1651
The UK Climate Change Act (CCA) mandates an 80 % reduction in CO2 emissions by 2050. It is estimated that 3.2 M tonnes pa CO2 results from travel-related NHS business. The acquisition of an electric bicycle to replace a car for both commuting and home visits allowed comparison of fuel use and CO2 emissions over a 4-year period. The switch to the use of the electric bicycle reduced the average annual petrol use by 329 l, the energy consumption by 3,140 kWh and the CO2 released by 748 kg a year. Wider adoption of electric bicycles in urban General Practice will contribute to the requirements of the CCA though to have a significant effect on the current estimated commuting-related carbon footprint of the NHS (0.76 MT pa) would require two-thirds of the workforce to abandon their cars in favour of electric bicycles. 相似文献
27.
Maxime Gignon Carole Amsallem Christine Ammirati 《International journal of occupational safety and ergonomics》2013,19(4):589-591
Moving a hospital is a critical period for quality and safety of healthcare. Change is very stressful for professionals. Workers who have experienced relocation of their place of work report deterioration in health status. Building a new hospital or restructuring a unit could provide an opportunity for improving safety and value in healthcare and for ensuring better quality of worklife for the staff. We used in situ simulation to promote experiential learning by training healthcare workers in the workplace in which they are expected to use their skills. In situ simulation was a way to design, plan, assess and implement a new healthcare environment before opening its doors for patient care. We can envisage that simulation will soon be used formally to identify potential problems in healthcare delivery and in staff quality of worklife in new healthcare facilities. Simulation is a way to co-produce a safe and valuable healthcare facility. 相似文献
28.
Bouyahya Asmaa Sembo-Backonly Berthe-Sandra Favrelle-Huret Audrey Balieu Sébastien Guillen Frédéric Mesnage Valérie Karakasyan-Dia Carole Lahcini Mohammed Le Cerf Didier Gouhier Géraldine 《Environmental science and pollution research international》2022,29(1):271-283
Environmental Science and Pollution Research - We developed a new hybrid material resulting from an innovative supramolecular tripartite association between an ionic liquid covalently immobilized... 相似文献
29.
Ait-Mouheb Nassim Bahri Akiça Thayer Bechir Ben Benyahia Boumediene Bourrié Guilhem Cherki Brahim Condom Nicolas Declercq Rémi Gunes Adem Héran Marc Kitir Nurgul Molle Bruno Patureau Dominique Pollice Alfieri Rapaport Alain Renault Pierre Riahi Khalifa Romagny Bruno Sari Tewfik Sinfort Carole Steyer Jean-Philippe Talozi Samer Topcuoglu Bulent Turan Metin Wéry Nathalie Yıldırım Ertan Harmand Jérôme 《Regional Environmental Change》2018,18(3):693-705
Regional Environmental Change - Climate change and a growing population around the Mediterranean Rim are increasing the need for water and, consequently, the pressure on resources in terms of both... 相似文献
30.
Fureix C Hausberger M Seneque E Morisset S Baylac M Cornette R Biquand V Deleporte P 《Die Naturwissenschaften》2011,98(7):583-592
Describing postures has always been a central concern when studying behaviour. However, attempts to compare postures objectively
at phylogenetical, populational, inter- or intra-individual levels generally either rely upon a few key elements or remain
highly subjective. Here, we propose a novel approach, based on well-established geometric morphometrics, to describe and to
analyse postures globally (i.e. considering the animal’s body posture in its entirety rather than focusing only on a few salient
elements, such as head or tail position). Geometric morphometrics is concerned with describing and comparing variation and
changes in the form (size and shape) of organisms using the coordinates of a series of homologous landmarks (i.e. positioned
in relation to skeletal or muscular cues that are the same for different species for every variety of form and function and
that have derived from a common ancestor, i.e. they have a common evolutionary ancestry, e.g. neck, wings, flipper/hand).
We applied this approach to horses, using global postures (1) to characterise behaviours that correspond to different arousal
levels, (2) to test potential impact of environmental changes on postures. Our application of geometric morphometrics to horse
postures showed that this method can be used to characterise behavioural categories, to evaluate the impact of environmental
factors (here human actions) and to compare individuals and groups. Beyond its application to horses, this promising approach
could be applied to all questions involving the analysis of postures (evolution of displays, expression of emotions, stress
and welfare, behavioural repertoires…) and could lead to a whole new line of research. 相似文献