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排序方式: 共有151条查询结果,搜索用时 15 毫秒
61.
旅游者们越来越意识到交通的负面影响(包括噪音和其他类型的污染).繁重的交通会影响旅游目的地的娱乐或其他价值.对于旅游胜地以赢利为目的的管理者来说,交通方式和参观者的满意程度及再访愿望之间的关系正越来越重要. 相似文献
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63.
Lichens collected in the northern part of Sweden were analyzed over a 10-year period for chlorinated hydrocarbons. Results show a delay of 2–3 years between the production of PCBs and the deposition of these compounds in the lichen. They confirm the low solubility of PCBs in water and the predominance of atmospheric transport of these chlorinated compounds far away from industrialized areas. 相似文献
64.
Wilfrid Bach 《Die Naturwissenschaften》1995,82(2):53-67
2 -reduction target for 2005 will be missed. Therefore, it is paramount that at the first Conference of Parties in Berlin in March 1995 a protocol be signed with binding CO 2-emission reduction targets. 相似文献
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66.
Kalev Kuklane Chuansi Gao Faming Wang Ingvar Holmér 《International journal of occupational safety and ergonomics》2013,19(2):171-179
AbstractStandard No. EN 15831:2004 provides 2 methods of calculating insulation: parallel and serial. The parallel method is similar to the global one defined in Standard No. ISO 9920:2007. Standards No. EN 342:2004, EN 14058:2004 and EN 13537:2002 refer to the methods defined in Standard No. EN ISO 15831:2004 for testing cold protective clothing or equipment. However, it is necessary to consider several issues, e.g., referring to measuring human subjects, when using the serial method. With one zone, there is no serial-parallel issue as the results are the same, while more zones increase the difference in insulation value between the methods. If insulation is evenly distributed, differences between the serial and parallel method are relatively small and proportional. However, with more insulation layers overlapping in heavy cold protective ensembles, the serial method produces higher insulation values than the parallel one and human studies. Therefore, the parallel method is recommended for standard testing. 相似文献
67.
Radioactive contamination: state of the science and its application to predictive models 总被引:1,自引:0,他引:1
Whicker FW Shaw G Voigt G Holm E 《Environmental pollution (Barking, Essex : 1987)》1999,100(1-3):133-149
68.
Kathrine Hauge Madsen Preben Bach Holm Jesper Lassen Peter Sandøe 《Journal of Agricultural and Environmental Ethics》2002,15(3):267-278
In public debate GMPs are oftenreferred to as being unnatural or a violationof nature. Some people have serious moralconcerns about departures from what is natural.Others are concerned about potential risks tothe environment arising from the combination ofhereditary material moving across naturalboundaries and the limits of scientificforesight of long-term consequences. To addresssome of these concerns we propose that anadditional element in risk assessment based onthe concept of familiarity should beintroduced. The objective is to facilitatetransparency about uncertainties inherent inthe risk assessment of the GMP. Familiarityconventionally involves data and experiencerelating to the plant species and the ecosystemin question. We would like to extend thisconcept to the molecular level of plantbreeding and suggest that GMP characteristicsshould be compared to a reference baselinedetermined by conventional breeding techniques.Three GMPs are ranked according to familiarityat the plant and ecosystem level and themolecular level. The approach may help tointegrate discussion of the scientificarguments and moral questions raised in thedebate about GMOs by providing an operationalscheme within which moral concerns are broughtwithin the framework of science-based riskassessment. 相似文献
69.
Accidents produce external pressures on companies leading to new regulations and renegotiation of enforcement of regulations. Our perspective is institutional with a focus on the extended dialogue among regulators and the industry. The empirical focus is offshore oil and gas production, deep sea and coastal fisheries, and maritime transportation with a segment of older bulk carriers. The findings are that structural characteristics of both the industries and the regulatory regime determine the interactions between the regulated and the regulator. The paper illustrates that in industrial sectors where hazards and risks are visible and of public interest, it is easier to implement regulations through outside pressure from regulators and other stakeholders such as internationally organised unions. 相似文献
70.
Ieva Miceikaite Christina Fagerberg Charlotte Brasch-Andersen Pernille Mathiesen Torring Britta Schlott Kristiansen Qin Hao Lene Sperling Mette Holm Ibsen Katrin Löser Eske Alf Bendsen Lilian Bomme Ousager Martin Jakob Larsen 《黑龙江环境通报》2023,43(9):1132-1141