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71.
Safety climate measurement at workplace in China: A validity and reliability assessment 总被引:1,自引:0,他引:1
Si-Hao Lin Wen-Juan Tang Jian-Ying Miao Zhi-Ming Wang Pei-Xi Wang 《Safety Science》2008,46(7):1037-1046
72.
Sumana Siripattanakul Wanpen Wirojanagud John McEvoy Eakalak Khan 《Water, Air, & Soil Pollution: Focus》2008,8(3-4):257-266
Atrazine biodegradation by immobilized pure and mixed cultures was examined. A pure atrazine-degrading culture, Agrobacterium radiobacter J14a (J14a), and a mixed culture (MC), isolated from an atrazine-contaminated crop field, were immobilized using phosphorylated-polyvinyl
alcohol (PPVA). An existing cell immobilization procedure was modified to enhance PPVA matrix stability. The results showed
that the matrices remained mechanically and chemically stable after shaking with glass beads over 15 days under various salt
solutions and pH values. The immobilization process had a slight effect on cell viability. With the aid of scanning electron
microscopy, a suitable microstructure of PPVA matrices for cell entrapment was observed. There were two porous layers of spherical
gel matrices, the outside having an encapsulation property and the inside containing numerous pores for bacteria to occupy.
J14a and MC were immobilized at three cell-to-matrix ratios of 3.5, 6.7, and 20 mg dry cells/mL matrix. The atrazine biodegradation
tests were conducted in an aerobic batch system, which was inoculated with cells at 2,000 mg/L. The tests were also conducted
using free (non-immobilized) J14a and MC for comparative purpose. The cell-to-matrix ratio of 3.5 mg/mL provided the highest
atrazine removal efficiency of 40–50% in 120 h for both J14a and MC. The free cell systems, for both cultures, presented much
lower atrazine removal efficiencies compared to the immobilized cell systems at the same level of inoculation. 相似文献
73.
建立了烟尘、烟气监测全程序质量监督体系,确定了监督检查工作需要控制的环节,并细化了各环节需要重点关注的内容。以层次分析法等关键技术为基础,通过赋予监测全过程各环节不同的指标权重,建立了统一化、标准化的综合评价模式。研究将评价体系分为2个层次,一级指标3个,二级指标19个,并确定了每个指标的测评内容及计算方法。将该体系应用于6家监测机构的质量监督工作,证明其实用性和适用性良好。 相似文献
74.
Popular music is a generation-specific zeitgeist, while music affords otherwise unobtainable engagement with environmental themes. Despite being the most widespread form of music there is a paucity of scholarship on climate change vis-à-vis popular music. In turn, this article explores how popular music may provide a soundtrack that narrates the rapidity of contemporary biophysical change. Approaches of conveying versus communicating climate change in music are considered across a spectrum of musical forms, from contemporary and historical popular music to contemporary classical music and sound art. The article applies the framework of shifting baselines to music engaged with environmental change in order to formulate a closer relationship between objective and quantitative intergenerational biophysical change and subjective and qualitative socio-cultural change. To cease losing track of such inexorable degradation, the article speculates on future musical forms that may obviate such intergenerational myopia by conveying and/or communicating the unprecedented rapidity of biophysical change. 相似文献
75.
Climate change adaptation approaches with nomadic culture characteristics in Inner Mongolia grassland in China 总被引:1,自引:0,他引:1
Xiaojia He 《中国人口.资源与环境(英文版)》2017,15(3):220-225
Climate change adaptation is an important part of addressing climate warming. Inner Mongolia grassland is a sensitive and vulnerable area of climate and an important region for adaptation to climate change. New climate change adaptation approaches with nomadic culture characteristics should be exploded in the context of climate warming. In this paper, the different utilization pattern of grassland in different regions, the different modes of production and management and historical culture were analyzed first in Nenjiang–West Liaohe plain and Ke’erqin region, Inner Mongolia Plateau and Ordos Plateau. Then, nomadic culture on the grassland was discussed from the productivity to biodiversity, from local livestock variety to resource-used system. Finally, new approaches of climate change adaptation with inheriting the essence of nomadic culture were proposed, including protecting biodiversity and using resources reasonably, performing a practice of grazing suspension–rotational grazing system, fencing degenerated grassland to facilitate its growth, founding new farming and husbandry system on the grassland, and establishing an incentive mechanism favorable to grassland and ethical cultural protection. 相似文献
76.
Agata Jabłońska-Trypuć Elżbieta Wołejko Urszula Wydro Andrzej Butarewicz 《Journal of environmental science and health. Part. B》2017,52(7):483-494
Pesticides cause serious environmental and health problems both to humans and animals. The aim of this review is to discuss selected herbicides and fungicides regarding their mode of action and their influence on basic oxidative stress parameters and endocrine disruption properties tested in selected cell cultures in vitro. Because of numerous difficulties which animal studies are subject to, cell cultures are an excellent experimental model reflecting human exposure to different pesticides through all relevant routes. This experimental model can be used to monitor aggregate and cumulative pesticide exposures. 相似文献
77.
Over the last several decades, the scientific community has replaced the ‘acts of god’ explanations for disasters with a view that disasters are actually ‘acts of nature,’ and more recently, ‘acts of human behavior and decision making.’ Despite the secular orientation of contemporary disaster research, religious beliefs still govern people’s interpretations of natural events across many continents and cultures. Using a case study of a rural Sherpa community in Nepal, this paper responds to the challenge of linking religion and disaster risk in the context of a climate change-induced glacial lake outburst flood hazard. Data collection employed ethnographic techniques including participant observation and 53 interviews with community members. Results indicate that the case study community’s religious belief system influences how they interpret and respond to the glacial lake hazard, although their beliefs co-exist with more scientific interpretations of risk. Rather than being immobilised by their belief system, we found that religious aspects like rituals and prayer can enhance social cohesion and contribute to capacities for coping with fear and uncertainty in this community. We assert that religion can yield valuable resources to glacial lake risk reduction strategies, which will benefit from incorporating social-cultural factors more profoundly. 相似文献
78.
In the present study, we isolated three novel bacterial species, namely, Staphylococcus sp., Bacillus circulans–I, and Bacillus circulans–II, from contaminated soil collected from the premises of a pesticide manufacturing industry. Batch experiments were conducted using both mixed and pure cultures to assess their potential for the degradation of aqueous endosulfan in aerobic and facultative anaerobic condition. The influence of supplementary carbon (dextrose) source on endosulfan degradation was also examined. After four weeks of incubation, mixed bacterial culture was able to degrade 71.82 ± 0.2% and 76.04 ± 0.2% of endosulfan in aerobic and facultative anaerobic conditions, respectively, with an initial endosulfan concentration of 50 mg l?1. Addition of dextrose to the system amplified the endosulfan degradation efficiency by 13.36 ± 0.6% in aerobic system and 12.33 ± 0.6% in facultative anaerobic system. Pure culture studies were carried out to quantify the degradation potential of these individual species. Among the three species, Staphylococcus sp. utilized more beta endosulfan compared to alpha endosulfan in facultative anaerobic system, whereas Bacillus circulans–I and Bacillus circulans–II utilized more alpha endosulfan compared to beta endosulfan in aerobic system. In any of these degradation studies no known intermediate metabolites of endosulfan were observed. 相似文献
79.
Propiconazole inhibits the sterol 14α-demethylase in Glomus irregulare like in phytopathogenic fungi
Calonne M Sahraoui AL Campagnac E Debiane D Laruelle F Grandmougin-Ferjani A Fontaine J 《Chemosphere》2012,87(4):376-383
The increasing concentrations impact (0.02, 0.2 and 2 mg L−1) of a Sterol Biosynthesis Inhibitor (SBI) fungicide, propiconazole, was evaluated on development and sterol metabolism of two non-target organisms: mycorrhizal or non-mycorrhizal transformed chicory roots and the arbuscular mycorrhizal fungus (AMF) Glomus irregulare using monoxenic cultures. In this work, we provide the first evidence of a direct impact of propiconazole on the AMF by disturbing its sterol metabolism. A significant decrease in end-products sterols contents (24-methylcholesterol and in 24-ethylcholesterol) was observed concomitantly to a 24-methylenedihydrolanosterol accumulation indicating the inhibition of a key enzyme in sterol biosynthesis pathway, the sterol 14α-demethylase like in phytopathogenic fungi. A decrease in end-product sterol contents in propiconazole-treated roots was also observed suggesting a slowing down of the sterol metabolism in plant. Taken together, our findings suggest that the inhibition of the both AM symbiotic partners development by propiconazole results from their sterol metabolism alterations. 相似文献
80.