共查询到20条相似文献,搜索用时 156 毫秒
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从防灾减灾具备的强大教育功能和广泛社会影响的角度,论述了防灾减灾教育进入学校的必要性,强调了学校防灾减灾教育的开展是实现全民科学防灾减灾的关键。基于多年的防灾减灾教学实践,提出了一些有效开展学校防灾减灾教育的建议和措施,主要是通过教学内容的“四个递进”、教学安排的“三个转变”,推动学校防灾减灾教育改革。同时,针对当前学校防灾减灾教育所面临的困境,提出了一些解决或缓解的具体措施。 相似文献
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《Atmospheric Environment. Part A. General Topics》1993,27(16):2503-2508
The results of studies on dust aerosol optical properties obtained during the U.S.S.R.-U.S. experiment are discussed. The ground-based and aircraft measurements carried out during the experiment allow the estimation of characteristic values of aerosol optical depth, aerosol light-scattering coefficients, the degree of linear polarization, and aureole phase functions for different atmospheric conditions in Central Soviet Asia. Two dust storms were observed for which the recorded aerosol optical depth at λ = 0.55 μm {τa(0.55)} reached 1.5 on 16 and 17 September 1989, and 3.5 on 20 and 21 September 1989. The optical characteristics (spectral dependence of the optical depth, degree of linear polarization) were similar for two dust episodes. 相似文献
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Dr. Sci. V. S. Baranov V. N. Gorbunova T. E. Ivaschenko N. Yu. Shwed N. S. Osinovskaya T. K. Kascheeva V. M. Lebedev A. V. Mikhailov V. G. Vakharlovsky T. V. Kuznetzova 《黑龙江环境通报》1992,12(7):575-586
From a total of 490 cystic fibrosis (CF) high-risk families under supervision (mostly Russian Slavs from the European part of the country), DNA data including both direct screening for some CF gene(CFTR)mutations(deIF508, G551D and 1677delTA) and allelic polymorphism studies with tightly CF linked DNA markers were collected from 261 families. All full families (129) and 86 CF families with a deceased index child were found to be either fully (42 per cent) or partially (40 per cent) informative for DNA analysis. Prenatal diagnosis (PD) was carried out in 161 CF families. Microvillar enzyme (MVE) assay was applied to all 140 PD at the second trimester either as a single test (88) or in conjunction with DNA analysis (52). The frequency of false-negative results of the MVE assay was 1.3 percent and that of false-positive results, as judged by the albumin meconium test, was 5.0 per cent. Ambiguous results of MVE analysis were found in 30 cases, 12 of which were verified by DNA analysis. Molecular diagnosis of CF at the first trimester was carried out in 21 cases and four pregnancies were terminated. Altogether, 39 pregnancies with a predicted high risk of CF fetuses were terminated. The low average frequency of delF508 in CF chromosomes of Russian Slavs (50 per cent), its remarkable inter-population variation, and the significant proportion of at-risk families without an affected child determine the necessity of combined molecular and biochemical (MVE assay) approaches for efficient prenatal diagnosis of CF in the former U.S.S.R. 相似文献
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Peter Hans Hofschneider 《Die Naturwissenschaften》1995,82(4):157-159
Ansprache vor dem Wissenschaftlichen Rat der Max-Planck-Gesellschaft am 8.2.1995. Adolf Butenandt war Ehrenprasident der MPG und von 1960 bis 1983 Mitglied des Beirats der Naturwissenschaften. 相似文献
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