有机磷酸酯诱导迟发性神经毒性及其对神经毒性酯酶（NTE）活性影响的动态研究

以成年产卵来航母鸡为试验动物，研究了三甲基苯基磷酸酯（Ｔｒｉ－ｏ－ＣｒｅｓｙｌＰｈｏｓ－ｐｈａｔｅ，ＴＯＣＰ）诱导的迟发性神经毒性．试验发现，母鸡口服ＴＯＣＰ（７５０ｍｇ／ｋｇ）后，经过大约８－１０ｄ的潜伏期开始出现中毒症状，其表现为以步态失调为主要特征的运动障碍呈进行性加重，至第２１ｄ开始便发展为瘫痪，对鸡脑神经病损靶标酯酶（ＮｅｕｒｏｐａｔｈｙＴａｒｇｅｔＥｎｚｙｍｅ，ＮＴＥ）活性的测定表明，有机械诱导的迟发性神经毒性（Ｏｒｇａｎｏｐｈｏｓｐｈａｔｅ－ＩｎｄｕｃｅｄＤｅｌａｙｅｄＰｏｌｙｎｅｕｒｏｐａｔｈｙ，ＯＰＩＤＰ）与ＮＴＥ活性抑制之间的关系不平行，其毒性症状的轻重与ＮＴＥ活性被抑制的强弱也不呈正相关，很可能，在给药后２４ｈ，体内ＯＰＩＤＰ已被触发，此外，实验观察到给予ＴＯＣＰ后被试鸡的体重明显下降。     

WJ-R01干膜耐磨自润滑涂料在某枪械上的应用

概述了干膜润滑涂层的原理。研制的WJ-R01干膜耐磨自润滑涂层具有耐磨减摩自润滑性能突出,耐腐蚀性能优异,能适应海洋大气环境等特点。介绍了其组成、理化性能,以及应用施工等情况。在兵器某枪械上应用效果良好。     

Cr3+掺杂对TiO2薄膜光催化活性的影响

采用溶胶-凝胶法制备了TiO2粉末和以釉面瓷砖为载体的TiO2薄膜,讨论了不同Cr3+掺杂浓度对TiO2光催化活性的影响,并采用UVVIS对其光学性能进行了检测.结果表明,Cr3+掺杂和釉面瓷砖的交互作用能够显著提高TiO2薄膜的光催化活性,最佳掺杂浓度为6.04×1017个·cm-3,且随着TiO2光催化活性的提高,薄膜的吸收带边发生了明显的红移,提高了可见光的利用率.     

一般工业固废填埋场建设项目环境监理探析

介绍了一般工业固废填埋场工程的特点和环境监理的现状;结合填埋场项目环境监理工作的实践,分析并总结了填埋场建设项目环境监理要点,即制订切实的监理方案,对工程的关键部位、关键工序做好巡视、旁站监理工作,在实施过程中做好水土保持、生态保护的监理工作。     

累积影响研究及其意义

在综述累积研究现状的基础上,概述了累积影响的概念与分类方法,累积影响评价的主要途径,论述了累积影响研究的前景与意义。     

Analysis of relationship between economic growth and environment in Benxi Shiqiaozi Development Zone

ＡｎａｌｙｓｉｓｏｆｒｅｌａｔｉｏｎｓｈｉｐｂｅｔｗｅｅｎｅｃｏｎｏｍｉｃｇｒｏｗｔｈａｎｄｅｎｖｉｒｏｎｍｅｎｔｉｎＢｅｎｘｉＳｈｉｑｉａｏｚｉＤｅｖｅｌｏｐｍｅｎｔＺｏｎｅ￥ＬｉＢｉｎ；ＲｕＪｉａｎｇ；ＹｅＷｅｎｈｕ；ＸｕＹｕｎｌｉｎ（Ｃｅｎｔｅ...     

泗河水环境容量及最大允许排污量计算

规范了水环境容量的定义和分类,建立了符合泗河水文、水资源特征和水环境状况的河流水环境容量模型,与GIS技术结合构建了适合北方地区的河流水环境容量计算程序和方法;摸清了水功能区-入河排污口-点源排放口的一一对应关系,提出了将水域环境容量转换为陆域点源最大允许排污量的估算方法。计算了泗河在满足水功能区划条件下的水环境容量及最大允许排污量,从而为制定该河流水污染物容量总量控制方案提供了科学依据。     

城市污泥产品林地施用效果与风险评价

为探究城市污泥产品的林地施用效果,以北京排水集团生产的城市污泥产品(有机营养土、生物碳土、复合生物碳土)为研究对象,在北京市大兴区建立了城市污泥产品林地施用示范区.通过现场施用,研究3种城市污泥产品在不同施肥方式、不同施肥量下对林地环境及毛白杨生长的影响.结果表明,土壤的酸碱度与施肥前相比有小幅度的上升,最终稳定在7....     

Selection of failure frequency and its impact on risk assessment – A case study from plot plan optimisation

Facility Siting is an important phase of project development. A critical stage is plot plan optimisation, where significant potential hazards are eliminated due to equipment spacing. In addition to ensuring appropriate compliance with minimum spacing requirements, occupied building studies to achieve compliance with the requirements of API 752 and API 753 could also be undertaken to optimise safety outcomes. The studies are done in three stages, where the first stage is hazard identification, second stage is consequence assessment and the third stage is risk assessment. Third stage assessments are only carried, if the consequence based siting recommendations are not practical to implement.This paper presents the challenges in estimating risk due to process hazards with a focus on selecting right event likelihood data. A comparison is presented on the variation in predicted risk levels based on equipment failure rates and leak frequencies.Case study of a plot plan optimisation study is undertaken with DNVGL Phast Risk and the variation in risk levels up to two orders of magnitude are recorded. Challenges such as adaption of data for local conditions, consistent definitions of failure, sample size of data, applicability of data play a significant role in identifying and correctly quantifying the risk levels. Such challenges and its impact on risk quantification are presented in this paper as well as its impact on facility siting.     

Credibility and advocacy in conservation science

Conservation policy sits at the nexus of natural science and politics. On the one hand, conservation scientists strive to maintain scientific credibility by emphasizing that their research findings are the result of disinterested observations of reality. On the other hand, conservation scientists are committed to conservation even if they do not advocate a particular policy. The professional conservation literature offers guidance on negotiating the relationship between scientific objectivity and political advocacy without damaging conservation science's credibility. The value of this guidance, however, may be restricted by limited recognition of credibility's multidimensionality and emergent nature: it emerges through perceptions of expertise, goodwill, and trustworthiness. We used content analysis of the literature to determine how credibility is framed in conservation science as it relates to apparent contradictions between science and advocacy. Credibility typically was framed as a static entity lacking dimensionality. Authors identified expertise or trustworthiness as important, but rarely mentioned goodwill. They usually did not identify expertise, goodwill, or trustworthiness as dimensions of credibility or recognize interactions among these 3 dimensions of credibility. This oversimplification may limit the ability of conservation scientists to contribute to biodiversity conservation. Accounting for the emergent quality and multidimensionality of credibility should enable conservation scientists to advance biodiversity conservation more effectively.