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环境管制与公共舆论--20世纪70-90年代美国环境政治考察 被引量:1
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作者 刘向阳 《东方论坛(青岛大学学报)》 2021年第1期133-144,共12页
从1960年代中期起,美国公众环境意识的觉醒和现代环保主义运动对其各项环境政策的出台和执行起到了极大的推动作用。不过美国公众环境意识的变化轨迹,并非单向度的绝对增长,而是随着时间的演变,有着自身的高低起伏。同时他们对环境问题... 从1960年代中期起,美国公众环境意识的觉醒和现代环保主义运动对其各项环境政策的出台和执行起到了极大的推动作用。不过美国公众环境意识的变化轨迹,并非单向度的绝对增长,而是随着时间的演变,有着自身的高低起伏。同时他们对环境问题和环境质量的关心也与其自身的工作和就业状况、美国的经济形势、政府对环境问题的重视程度等问题交织在一起,呈现着复杂的因应反馈和协同演变态势。在对公众环境意识的认知上,我们不能笼统地概说,而必须深入具体地分析。只有这样,才能真正把握不同时期公众的环境意识变化及其与政府公共政策的互动,在环境史研究中践行真正的人本主义。 展开更多
关键词 环境管制 公共舆论 因应协同 人本主义
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Screening on Synergist of Bacillus thuringiensis Wettable Powder
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作者 葛东华 张晓红 +3 位作者 南宫自艳 宋萍 王勤英 曹克强 《Agricultural Science & Technology》 CAS 2012年第9期1915-1918,共4页
[Objective] This study aimed to screen the best synergistic material for Bt wettable powder and evaluate their synergistic effect. [Method] The synergism of six different kinds of additives for Bacillus thuringiensis ... [Objective] This study aimed to screen the best synergistic material for Bt wettable powder and evaluate their synergistic effect. [Method] The synergism of six different kinds of additives for Bacillus thuringiensis wettable powder (Bt WP) on the 2^nd instar larvae of Plutella xylostella was tested by method of leaf dipping in labora- tory. [Result] The mixtures of Bt with 0.1% ZnCl2, 0.5% ZnCl2, 1.0% ZnCl2, 1.0% MgCI2, 0.5% boric acid, 1.0% boric acid, 0.5% citric acid or 1.0% citric acid all ex- hibited synergistic effect, in which the synergistic effect of mixture containing 0.5% boric acid was the highest, with 17.2 synergistic ratio; followed by the mixture containing 1.0% ZnCl2, with 15.6 synergistic ratio. Moreover, addition of 0.5% boric acid could shorten the median lethal time of Bt wettable powder by about 10 h. After the mixtures of Bt with 0.5% boracic acid or 1.0% ZnCl2 was stored for 15 d at room temperature, toxicities of the two mixtures did not change significantly. [Conclusion] Boracic acid as the synergist of Bt wettable powder could not only increase insecti- cidal effect of Bt, but also accelerate its insecticidal rate. So, boracic acid could improve the disadvantages of Bt wettable powder such as poor insecticidal effect and slow insecticidal speed in a certain degree. 展开更多
关键词 Bacillus thuringiensis Synergism Cotoxicity factor Plutella xylostella
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Synergistic effect of multiple predisposing risk factors on the development of bezoars 被引量:15
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作者 Metin Kement Nuraydin Ozlem +3 位作者 Elif Colak Sadik Kesmer Cem Gezen Selahattin Vural 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第9期960-964,共5页
AIM: To describe the clinical characteristics of patients with gastric or intestinal bezoars recently treated in our hospital.
关键词 BEZOAR Diospyrobezoars PERSIMMON Phyto-bezoar TRICHOBEZOAR
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The Driving Forces and Synergistic Effect between Regional Economic Growth,Resources and the Environment in the Yangtze River Economic Zone 被引量:6
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作者 郑德凤 张雨 +1 位作者 臧正 孙才志 《Journal of Resources and Ecology》 CSCD 2014年第3期203-210,共8页
From the viewpoints of population,resources,environment and economic-social development,we establish the models of accounting for resource and environmental costs and coordinated(or relative coordinated) development... From the viewpoints of population,resources,environment and economic-social development,we establish the models of accounting for resource and environmental costs and coordinated(or relative coordinated) development degrees between economic growth and resources and the environment using the evaluation method of ecosystem service value.Synergistic effects between regional economic growth and resources and the environment in the Yangtze River Economic Zone was analyzed and driving forces were analyzed by regression of partial least squares.We found that from 1983 to 2012,resource and environmental costs in the Yangtze River Economic Zone(including seven provinces and two municipalities) increased from 4736.55 trillion CNY to 15 359.45 trillion CNY and corresponding weights dropped from 31.1% to 19.7% compared to the national level.The degree of coordinated development rose from 0.295 to 1.506,higher than the national average.In the years 1983,1993 and 2003,the main factor that drove the coordinated development of regional economic growth,resources and the environment was low level resource and environmental costs.With continuous increases in primary and tertiary industrial added values after 2012,the advantage of the Yangtze River Economic Zone has weakened.In the future,provinces should improve the rules and regulations on planning and implementing main functional areas,promote adjustment of industrial structure,restore ecology,improve resource utilization efficiency and reduce environmental loss costs to enhance quality of economic development and promote the coordinated development of regional economic growth and resources and the environment. 展开更多
关键词 resource and environmental cost partial least squares synergistic effect driving forces Yangtze River Economic Zone
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