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791.
Reconciliation and consolation among chimpanzees 总被引:11,自引:0,他引:11
792.
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794.
Joop van der Pligt Joop van der Linden Peter Ester 《Journal of environmental psychology》1982,2(3):221-231
Attitudinal differences regarding the use of nuclear energy were investigated. Results obtained in a random sample drawn from the population of four communities in The Netherlands within 30 miles of a nuclear power plant showed a strong relationship between subjects' attitudes towards nuclear energy and their perceptions of the possible consequences of nuclear energy. ‘Pro’- and ‘con’-subjects showed marked differences in the importance attached to the different possible consequences and their endorsement of the salience of more general social issues. Results provide support for the view that individuals perceive a false consensus with respect to the relative prevalence of similar attitudes among other people. Finally, subjects' perceptions of others with similar or opposing attitudes towards the issue of nuclear energy showed marked differences in evaluation especially for the extreme attitude groups. 相似文献
795.
The influence of light and temperature on photosynthetic rate as measured by C14O2-fixation of marine benthic diatoms was investigated, using both intact sediment samples (Marshall et al., 1973) and suspensions of diatoms harvested by a lenstissue technique (Eaton and Moss, 1966). After C14-incubation, sediment samples were filtered, burned in a sample oxidizer, and their activity determined in a liquid scintillation counter. Photosynthetic rate of mixed field populations is saturated by a light intensity of approximately 10,000 lux; at still higher light intensities no photoinhibition was found. In contrast to the mixed field populations, unialgal cultures of the benthic diatom Amphiprora alata Kütz. exhibited strong photoinhibition at higher light intensities (10,000 to 60,000 lux). Within a range of 4° to 20°C, the photosynthetic rate increased about 10%/Co. No differences in photosynthetic pattern were observed between epipelic and epipsammic species. 相似文献
796.
Judith Klostermann Kaj van de Sandt Mike Harley Mikael Hildén Timo Leiter Jelle van Minnen Nico Pieterse Leendert van Bree 《Mitigation and Adaptation Strategies for Global Change》2018,23(2):187-209
Adaptation is increasingly recognised as essential when dealing with the adverse impacts of climate change on societies, economies and the environment. However, there is insufficient information about the effectiveness of adaption policies, measures and actions. For this reason, the establishment of monitoring programmes is considered to be necessary. Such programmes can contribute to knowledge, learning and data to support adaptation governance. In the European Union (EU), member states are encouraged to develop National Adaptation Strategies (NASs). The NASs developed so far vary widely because of differing views, approaches and policies. A number of member states have progressed to monitoring and evaluating the implementation of their NAS. It is possible to identify key elements in these monitoring programmes that can inform the wider policy learning process. In this paper, four generic building blocks for creating a monitoring and evaluation programme are proposed: (1) definition of the system of interest, (2) selection of a set of indicators, (3) identification of the organisations responsible for monitoring and (4) definition of monitoring and evaluation procedures. The monitoring programmes for NAS in three member states—Finland, the UK and Germany—were analysed to show how these elements have been used in practice, taking into account their specific contexts. It is asserted that the provision of a common framework incorporating these elements will help other member states and organisations within them in setting up and improving their adaptation monitoring programmes. 相似文献
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798.
W. R. van Wijk 《Die Naturwissenschaften》1931,19(44):894-895
799.
Mapping of exceedances of ozone critical levels for crops and forest trees in The Netherlands: Preliminary results 总被引:1,自引:0,他引:1
Within the framework of the UN-ECE Convention on Long-Range Transboundary Air Pollution (CLRTAP) critical levels of ozone for forest trees and crops have been determined. In this paper procedures are presented for constructing maps of The Netherlands showing measured ozone concentrations for comparison with the critical levels. The critical ozone levels for forest trees and crops are exceeded widely and frequently in The Netherlands. The frequency and size of exceedances depend on meteorological conditions: during a hot, sunny summer like 1989 or 1990 exceedances of the critical levels by a factor of two or three were observed in the whole of The Netherlands; in a cold, rainy summer like 1991 or 1993 only minor exceedances were observed in some parts (mainly in the south) of the country. 相似文献
800.
Polycyclic aromatic hydrocarbons in weathered bottom ash from incineration of municipal solid waste 总被引:3,自引:0,他引:3
Polycyclic aromatic hydrocarbons (PAHs) were analysed in weathered bottom ash from different municipal solid waste incinerators. The sum of the 16 "USEPA" PAHs was found to vary from 480 to 3590 microg/kg. The amounts of carcinogenic PAHs were between 89 and 438 microg/kg ash. The maximum levels of carcinogenic PAHs exceed the Swedish generic guidelines for sensitive land use. The results showed that the amount of PAHs in fresh and weathered bottom ash are similar, indicating that the PAHs are strongly bound to the ash and only limited amounts are released to the surroundings. 相似文献