砷对蔬菜生长的影响和临界值的研究

本文研究了紫色土添加砷对蔬菜生长的影响与临界值,并采用灰色系统的关联度分析方法,使它们与土壤性度联系起来,结果表明:三种紫色土砷的临界值一般为:红紫泥> 灰棕紫泥>红棕紫泥.     

Emerging technologies for in-situ groundwater remediation

There are numerous technologies currently being tested by EPA, universities throughout the world, and private research organizations. A few of the more promising innovative technologies as well as fully tested and proven remedies for treating contaminated groundwater are presented in this article. Although several of those technologies have been in existence for only four to five years, the results of full-scale testing are being produced. The method for each of these promising technologies is described, results from recent field-scale studies are summarized, and a discussion of cost is presented.     

国外警用装备及训练介绍——国外警用船艇介绍

（一）概述 警用船艇是水警的主要交通工具和惩治犯罪的有力手段.警用船艇的使用对于建设水上治安防控体系、维护辖区内治安秩序、提高水警处置突发事件的快速反应能力,都将产生积极的推动作用.     

煤矿带式输送机事故分析及防护措施

带式输送机是煤矿生产中的一种主要运输设备,广泛应用在采区平巷、采区上下山、运输大巷及井口运输走廊等场所,是矿井煤炭运输系统的中枢,一旦发生故障,轻则耽误生产,重则造成人员伤亡。笔者以常见的煤矿带式输送机故障类型为例,分析其产生故障的根本原因,提出各种故障的预防措施;论述了煤矿带式输送机综合保护装置的基本功能和动作原理;通过带式输送机综合保护装置控制系统结构示意图,全面、客观地展示了煤矿用带式输送机容易发生各种故障的方位和自动保护装置测控元件的布局、电气控制原理,不仅可以适时监控带式输送机的工作状态,自动报警、显示、处理各种运行故障,还可以避免人为误操作带来的各种损失。     

卫生部与国家安全生产监督管理局确定职业卫生监督管理职能的分工与协作

为了更好地贯彻实施《职业病防治法》、《安全生产法》、《使用有毒物品作业场所劳动保护条例》、《放射性同位素与射线装置放射防护条例》、《尘肺病防治条例》、《危险化学品安全管理条例》,以及落实中央编办发[2003]15号文件的规定,卫生部与国家安全生产监督管理局近期就职业卫生监督管理职能进行了认真研究,以卫监督发[2005]31号文下发了通知,明确了两部门职业卫生监督管理职能的分工与协作。     

Lessons after Bhopal: CSB a catalyst for change

The Bhopal tragedy was a defining moment in the history of the chemical industry. On December 3, 1984, a runaway reaction within a methyl isocyanate storage tank at the Union Carbide India Limited pesticide plant released a toxic gas cloud that killed thousands and injured hundreds of thousands. After Bhopal, industrial chemical plants became a major public concern. Both the public and the chemical industry realized the necessity of improving chemical process safety.

Bhopal served as a wake-up call. To prevent the same event from occurring in the United States, many legislative and industrial changes were invoked—one of which was formation of the U.S. Chemical Safety and Hazard Investigation Board (CSB). The ultimate goal of CSB is to use the lessons learned and recommendations from its investigations to achieve positive change within the chemical industry—preventing incidents and saving lives.

Although it seems clear that the lessons learned at Bhopal have improved chemical plant safety, CSB investigations indicate that the systemic problems identified at Bhopal remain the underlying causes of many incidents. These include:

• Lack of awareness of reactive hazards.

• Lack of management of change.

• Inadequate plant design and maintenance.

• Ineffective employee training.

• Ineffective emergency preparedness and community notification.

• Lack of root cause incident investigations and communication of lessons learned.

The aim of this paper is to present common themes from recent cases investigated by CSB and to discuss how these issues might be best addressed in the future.

This paper has not been independently approved by the Board and is published for general informational purposes only. Any material in the paper that did not originate in a Board-approved report is solely the responsibility of the authors and does not represent an official finding, conclusion, or position of the Board.     

Critical problems associated with climate change: a systematic review and meta-analysis of Philippine fisheries research

Environmental Science and Pollution Research - This paper proposes to analyze the scientific production on climate change and fisheries in the Philippine context. This research theme was chosen...     

GHS在危险化学品管理中的应用研究

阐述了GHS产生的背景及其在减少化学品事故,提高化学品安全管理水平,消除贸易壁垒,降低监管、企业成本等方面发挥的重要作用。介绍了GHS国内应用情况,对国内推行GHS提出了几点建议。     

Interface-mediated synthesis of monodisperse ZnS nanoparticles with sulfate-reducing bacterium culture

We have created a new method of ZnS nanospheres synthesis. By interface-mediated precipitation method (IMPM), monodisperse ZnS nanoparticles was synthesized on the particle surface of sulfate-reducing bacterium nutritious agar culture. Sulfate-reducing bacterium (SRB) was used as a sulfide producer because of its dissimilatory sulfate reduction capability, meanwhile produced a variety of amino acids acting as templates for nanomaterials synthesis. Then zinc acetate was dispersed into nutritious agar plate. Subsequently agar plate was broken into particles bearing much external surface, which successfully mediated the synthesis of monodisperse ZnS nanoparticles. The morphology of monodisperse ZnS nanospheres and SRB were examined by scanning electron microscopy (SEM), and the microstructure was investigated by X-ray diffraction (XRD). The thermostability of ZnS nanoparticles was determined by thermo gravimetric-differential thermo gravimetric (TG-DTG). The maximum absorption wavelengh was analysed with an ultraviolet-visible spectrophotometer within a range of 199–700 nm. As a result, monodisperse ZnS nanoparticles were successfully synthesized, with an average diameter of 80 nm. Maximum absorption wavelengh was 228 nm, and heat decomposed temperature of monodisperse ZnS nanoparticles was 596°C.