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排序方式: 共有284条查询结果,搜索用时 31 毫秒
111.
Manfred Niecke Andreas Krüger Peter Hauff Hermann Ellenberg Ralph Labes Susanne Niecke 《Environmental Sciences Europe》1998,10(1):3-14
With the aid of the Hamburg proton micro-probe, we examined the concentration of mercury in sea eagle feathers collected over the course of several decades in the Mecklenburg-Vorpommern area. Based on the sites where these feathers were collected and the data of these findings, it is possible to get a differential picture of mercury contamination related both temporally and regionally to the mercurial pollution of seed mordants used agriculturally. We compared the concentrations found with a basic “geogenic” contamination which was also to be seen in the feather samples from the last century as detected in museum animal specimens. 相似文献
112.
Effects of the 2008 flood on economic performance and food security in Yemen: a simulation analysis
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Extreme weather events such as floods and droughts can have devastating consequences for individual well being and economic development, in particular in poor societies with limited availability of coping mechanisms. Combining a dynamic computable general equilibrium model of the Yemeni economy with a household‐level calorie consumption simulation model, this paper assesses the economy‐wide, agricultural and food security effects of the 2008 tropical storm and flash flood that hit the Hadramout and Al‐Mahrah governorates. The estimation results suggest that agricultural value added, farm household incomes and rural food security deteriorated long term in the flood‐affected areas. Due to economic spillover effects, significant income losses and increases in food insecurity also occurred in areas that were unaffected by flooding. This finding suggests that while most relief efforts are typically concentrated in directly affected areas, future efforts should also consider surrounding areas and indirectly affected people. 相似文献
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Hybrid life-cycle assessment employing input–output analysis has advantages over conventional methods. In the inventory phase of a hybrid assessment, the data collection and the boundary selection can be tailored by using structural path analysis. This technique was applied to recent Australian data in order to determine environmentally important input paths in terms of energy consumption, land disturbance, water use, and emissions of greenhouse gases, NOx, and SO2, for all Australian industry sectors. Due to the complexity of inter-industrial transactions, up to third-order paths can be top-ranking. The identification of such paths is considerably more labour-intensive in conventional life-cycle assessments. 相似文献
115.
Gerhard Bernaschek M.D. Josef Deutinger Manfred Hansmann Rainer Bald Wolfgang Holzgreve Rainer Bollmann 《黑龙江环境通报》1994,14(9):821-833
Few reports concerning intrauterine shunting are available. We investigated the impact of this method. In order to evaluate intrauterine shunting and the complication rate for different indications, we sent a questionnaire to all German-speaking level 3 centres. In four level 3 centres, 52 intrauterine catheters were inserted in 34 fetuses. The indications were uni- or bilateral hydrothorax in nine cases, cystic adenomatoid malformation of the lung in four cases, infravesical stenosis in 13 cases, and fetal ascites in eight cases. In three cases (6 per cent), difficulties occurred when the drain was inserted. In 15 cases (29 per cent), the function of the drain was reduced by dislocation or occlusion. The mortality rate caused by shunting was as high as eight per cent (four cases). The application of an intrauterine shunt currently represents a rarely performed ultrasound-guided therapeutic intervention in the fetus. In all cases, the indication for shunting is to avoid compression of normal tissue by cystic structures. A high complication rate restricts the application of drainage to selected cases. 相似文献
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