全文获取类型
收费全文 | 264篇 |
免费 | 2篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 12篇 |
废物处理 | 9篇 |
环保管理 | 22篇 |
综合类 | 53篇 |
基础理论 | 67篇 |
污染及防治 | 66篇 |
评价与监测 | 21篇 |
社会与环境 | 14篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 5篇 |
2022年 | 11篇 |
2021年 | 12篇 |
2020年 | 7篇 |
2019年 | 7篇 |
2018年 | 10篇 |
2017年 | 6篇 |
2016年 | 18篇 |
2015年 | 10篇 |
2014年 | 13篇 |
2013年 | 20篇 |
2012年 | 22篇 |
2011年 | 21篇 |
2010年 | 15篇 |
2009年 | 17篇 |
2008年 | 18篇 |
2007年 | 15篇 |
2006年 | 10篇 |
2005年 | 8篇 |
2004年 | 2篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1985年 | 2篇 |
1981年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有267条查询结果,搜索用时 15 毫秒
161.
Rodrigo Ruano Olivier Picone Alexandra Benachi Anne-Gaelle Grebille Jelena Martinovic Yves Dumez Marc Dommergues 《黑龙江环境通报》2003,23(7):539-542
To illustrate the three-dimensional sonographic features of a rare genetic disorder, we report on prenatal diagnosis of osteogenesis imperfecta congenita associated with encephalocele at 13 weeks of gestation, using conventional and three-dimensional ultrasound. Because the parents were first-degree cousins and on the basis of the family history, a recessive autosomal inheritance was suspected. Of seven previous pregnancies, five were unaffected and two had been terminated in the second trimester owing to a similar abnormality (one affected boy and one affected girl). In the case we present, the diagnosis was made on the basis of two-dimensional ultrasound performed by physicians aware of the history; the quality of three-dimensional ultrasound imaging suggests that this technique might have contributed toward establishing a precise diagnosis in the absence of a positive family history. Besides, the global view provided by three-dimensional surface-rendering images made the parents more confident of the accuracy of the diagnosis. Although osteogenesis imperfecta congenita is generally considered as autosomal dominant, the case we report suggests that it may be inherited in a recessive autosomal fashion at least when associated with encephalocele. Three-dimensional ultrasound confirmed the conventional two-dimensional examination and was helpful in convincing the parents of the accuracy of the diagnosis. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
162.
Olivier Chanel Pascale Scapecchi Jean-Christophe Vergnaud 《Journal of Environmental Planning and Management》2006,49(5):759-776
This paper concerns the difficulty of taking long-term effects on health into account in an economic valuation. Indeed, public decision makers should incorporate the cessation lag between implementation of an abatement policy and achievement of all of the expected mortality-related benefits for any projects involving health impacts. This paper shows how this time lag problem can be handled by proposing two approaches—either in terms of deaths avoided or of life years saved—within a dynamic perspective. The main findings are that long-term health benefits calculated by standard methods and widely applied to adverse health effects should be corrected downwards when incorporated into an economic analysis. The magnitude of correction depends on the discount rate, on technical choices dealing with epidemiology and on the method chosen to assess mortality benefits. 相似文献
163.
A flexible matrix algebra framework for the multimedia multipathway modeling of emission to impacts 总被引:1,自引:0,他引:1
When assessing human health or ecosystem impacts of chemicals several calculation steps need to be addressed. Matrix algebra solving techniques are a useful approach to structure and solve the system of mass balance equations assessing chemical fate in environmental multimedia models. We suggest expanding this matrix approach towards a framework which includes the exposure, effect, and damage assessment for human health and ecosystems, also applicable to spatial modeling. Special emphasis is laid upon interpretation of the physical meaning of different elements within the matrices. The proposed framework provides several advantages such as simplified updating or extending of models to new impact pathways, possibility of covering various models within the same framework and transparency. Interpretation of intermediate and final results is facilitated, e.g., allowing for direct identification of dominating exposure pathways. Model comparability and evaluation is well supported, as the four matrices contain all intermediate results in a clear and interpretable way, independent from parameters, such as amount and place of emission. Multidisciplinary work is strongly facilitated enabling the linkage of different models from various disciplines together, since each of its modules defines a clear interface of intermediate results. This framework was reviewed by an independent expert panel within a UNEP/SETAC workshop, and adopted as starting-point for new advances in modeling environmental toxic releases within the UNEP/SETAC Life Cycle Initiative. 相似文献
164.
Alain?DejeanEmail author James?M.?Carpenter Bruno?Corbara Pamela?Wright Olivier?Roux Louis?M.?LaPierre 《Die Naturwissenschaften》2012,99(4):265-273
Here we show that trying to rob prey (cleptobiosis) from a highly specialized predatory ant species is risky. To capture prey,
Allomerus decemarticulatus workers build gallery-shaped traps on the stems of their associated myrmecophyte, Hirtella physophora. We wondered whether the frequent presence of immobilized prey on the trap attracted flying cleptoparasites. Nine social
wasp species nest in the H. physophora foliage; of the six species studied, only Angiopolybia pallens rob prey from Allomerus colonies. For those H. physophora not sheltering wasps, we noted cleptobiosis by stingless bees (Trigona), social wasps (A. pallens and five Agelaia species), assassin bugs (Reduviidae), and flies. A relationship between the size of the robbers and their rate of capture
by ambushing Allomerus workers was established for social wasps; small wasps were easily captured, while the largest never were. Reduviids, which
are slow to extract their rostrum from prey, were always captured, while Trigona and flies often escaped. The balance sheet for the ants was positive vis-à-vis the reduviids and four out of the six social
wasp species. For the latter, wasps began by cutting up parts of the prey’s abdomen and were captured (or abandoned the prey)
before the entire abdomen was retrieved so that the total weight of the captured wasps exceeded that of the prey abdomens.
For A. pallens, we show that the number of individuals captured during attempts at cleptobiosis increases with the size of the Allomerus’ prey. 相似文献
165.
166.
Julien Saada Olivier Parant Sylvie Kessler Jacqueline Aziza Marie France Sarramon 《黑龙江环境通报》2006,26(1):9-10
Congenital splenic cyst (CSC) is a rare condition, and only a few cases with prenatal diagnosis and no associated malformation have been reported. Spontaneous regression is possible in case of mild CSC (under 40 mm), but enlargement or secondary complications may lead to surgical treatment. We report, herein, two cases of isolated mild CSC with complete spontaneous postnatal regression. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
167.
168.
Lola Loussert Fabien Vidal Olivier Parant Safouane M. Hamdi Christophe Vayssiere Paul Guerby 《黑龙江环境通报》2020,40(5):519-527
For the past decades, growing attention has been given to aspirin use during pregnancy. It favors placentation by its proangiogenic, antithrombotic, and anti-inflammatory effects. Therefore, low doses of aspirin are prescribed in the prevention of placenta-mediated complications, mainly preeclampsia and fetal growth restriction. However, questions regarding its clinical application are still debated. Aspirin is effective in preventing preeclampsia in a high-risk population. Most guidelines recommend that risk stratification should rely on medical history. Nevertheless, screening performances dramatically improve if biochemical and biophysical markers are included. Concerning the appropriate timing and dose, latest studies suggest aspirin should be started before 16 weeks of pregnancy and at a daily dose of 100 mg or more. Further studies are needed to improve the identification of patients likely to benefit from prophylactic aspirin. Besides, the role of aspirin in the prevention of fetal growth restriction is still questioned. 相似文献
169.
170.