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991.
992.
对地质矿产部门1991年初至1992年底开展的工业卫生普查工作资料进行分析,简述了职业危害人群分布、现场监测、职业病的现状及危害原因,提出了防护措施和改进意见。 相似文献
993.
Clayton B. Marlow Robert Finck Harrie Sherwood 《Journal of the American Water Resources Association》2006,42(4):891-900
ABSTRACT: Efforts by state and federal agencies to develop standards and guidelines for protecting and enhancing water quality on grazing lands have led to suggestions that grazed stubble height criteria could be used to determine when cattle should be removed from a specific pasture or grazing area. Until recently only indirect scientific evidence from agronomy and laboratory studies gave support to the stubble height concept. Consequently, a grazing study was initiated on a Montana ranch in 1997 to determine the reduction in overland sediment achieved by grazing a pasture to a predetermined stubble height. Treatments consisted of 7 cm (3 in) grazed, 7 cm (3 in) clipped or mowed, 15 cm (6 in) grazed; 15 cm (6 in) clipped and untreated or natural forage plant height. The five treatments were used in a two‐year trial spanning 1997 to 1999. At the conclusion of this study the magnitude of sediment production was related to the number of intense rain events during the March through June period rather than total precipitation. There was a significant year effect in terms of sediment accumulation (P < 0.01) but no year by treatment effect (P = 0.11). Even though a significant difference in sediment accumulation was detected between the shorter and taller stubble heights (P = 0.04) in both 1998 and 1999, the difference could not be explained by grazed stubble height alone. Close grazing (7 cm stubble) consistently ranked lowest in sediment production (P < 0.01) among all treatments, including the ungrazed control. These results suggest that changes in plant community structure and microtopographic caused by grazing influence sediment entrapment (retention) on hillslopes more than those caused by plant height. 相似文献
994.
建立与实施环境和职业健康安全管理整合体系有利于企业降低管理成本、提高管理效益。环境管理体系标准的改版加强了其与其他管理体系之间的协调性和兼容性,有利于进一步推动整合体系的建立与实施。在深入研究GB/T24001-2004版标准在结构框架、术语、要素名称及内容等方面变化情况的基础上,在环境和职业健康安全方针、目标、指标和方案的策划、资源,特别是基础设施的保障、合规性评价的完善、纠正措施和预防措施的实施以及一体化内部审核的开展等方面提出了建议对策,以供企业借鉴。改进环境和职业健康安全管理整合体系,以适应体系标准的发展变化,不断提高企业的现代安全健康管理水平是企业可持续发展的重要因素。 相似文献
995.
996.
Michael R. Greenberg 《The Environmentalist》2003,23(2):159-173
A relationship between individual health-oriented actions and neighborhood civic activities is proposed, as is a relationship between these behaviors and a personality that seeks information from multiple sources. The proposed relationship was tested with a sample of 367 residents of New Jersey, USA. Respondents who had their eyes examined and screening tests for chronic diseases, and engaged in other individually oriented health-protecting behaviors were also more likely to have engaged in neighborhood civic activities, such as calling on elected officials and participating in neighborhood functions. As expected, specific personality attributes were associated with both sets of health-protecting activities, including outreach to multiple sources for information and help, a strong sense of efficacy, and trust of authority and neighbors. The relationship between personality and health-protecting behaviors was confounded by age and formal education. However, the relationship with personality measures persisted after controlling for age and education. The shortcomings of the research are reviewed, and implications of these observations for building a broader theory that links environmental education to civic engagement and individual health-protecting behaviors are discussed. 相似文献
997.
汤立志 《湖南环境生物职业技术学院学报》2006,12(4):356-359
通过对果树注射施肥技术原理,特点与操作方法的介绍,并与传统的方法相对比.从果品产量与品质,肥料利用率,环境影响程度等方面分析了果树注射施肥的效果,该方法具有较大的推广应用前景. 相似文献
998.
999.
1000.
根据2008年上海市环境保护部门的每日24h近地面臭氧监测数据,以每日最大8h(11:00~18:59)的臭氧浓度均值作为上海市居民的平均暴露水平,以该年上海市的全部常住人口作为臭氧暴露人口,计算近地面臭氧污染对上海市居民的健康影响和相关的健康经济损失.2008年上海市近地面臭氧每日最大8h的年平均水平为88μg/m3,其中市区为78μg/m3,市郊区为96μg/m3.结果表明,近地面臭氧污染可以导致上海市居民1892(95%CI:589~3540)例早逝和26049(95%CI:13371~38499)例住院,全年的归因健康经济损失为32.42(95%CI:10.80~59.23)亿元,其中由早逝引起的损失占总健康经济损失的88.12%.提示近地面臭氧污染已对上海市居民产生了较大的健康损失和经济损失. 相似文献