壳寡／聚糖系列衍生物对铅离子的吸附研究

比较了9种壳寡/聚糖系列衍生物作为吸附剂对同一浓度铅离子的吸附,结果为交联香草醛壳聚糖（CTSV-G）〉香草醛壳聚糖（CTSV）〉羧甲基壳聚糖（CM-CTS）〉巯基化壳寡糖（O-CTS-SH）〉壳寡糖（O-CTS）〉香草醛壳寡糖（O-CTSV）〉壳聚糖（CTS）〉壳寡糖硫酸酯（O-CTSS）〉羧甲基壳寡糖（CM-O-CTS）;比较了同一吸附剂对不同浓度的铅离子的吸附率,其吸附率随着溶液浓度的升高而降低。研究了各吸附剂在铅、镉、铬金属离子竞争中对铅吸附的影响,结果表明各吸附剂对镉和铅离子的吸附效果最好,可达80%,对铬离子吸附较少,在40%左右。     

易燃、易爆危险化学品铁路运输危险性分析

从定性和定量两个方面对易燃、易爆危险化学品的铁路槽罐车运输过程和装卸过程的危险性进行分析,利用道化学火灾爆炸指数法计算易燃、易爆危险化学品铁路罐车的火灾爆炸指数,进行重大危险源辨识,并对重大危险源的概念进行了理论探讨,提出移动式重大危险源的概念。     

Seat strength in rear body block tests

Purpose: This study collected and analyzed available testing of motor vehicle seat strength in rearward loading by a body block simulating the torso of an occupant. The data were grouped by single recliner, dual recliner, and all belts to seat (ABTS) seats.

Methods: The strength of seats to rearward loading has been evaluated with body block testing from 1964 to 2008. The database of available tests includes 217 single recliner, 65 dual recliner, and 18 ABTS seats. The trends in seat strength were determined by linear regression and differences between seat types were evaluated by Student's t-test. The average peak moment and force supported by the seat was determined by decade of vehicle model year (MY).

Results: Single recliner seats were used in motor vehicles in the 1960s to 1970s. The average strength was 918 ± 224 Nm (n = 26) in the 1960s and 1,069 ± 293 Nm (n = 65) in the 1980s. There has been a gradual increase in strength over time. Dual recliner seats started to phase into vehicles in the late 1980s. By the 2000s, the average strength of single recliner seats increased to 1,501 ± 335 Nm (n = 14) and dual recliner seats to 2,302 ± 699 Nm (n = 26). Dual recliner seats are significantly stronger than single recliner seats for each decade of comparison (P < .001). The average strength of ABTS seats was 4,395 ± 1,185 in-lb for 1989–2004 MY seats (n = 18). ABTS seats are significantly stronger than single or dual recliner seats (P < .001). The trend in ABTS strength is decreasing with time and converging toward that of dual recliner seats.

Conclusions: Body block testing is an quantitative means of evaluating the strength of seats for occupant loading in rear impacts. There has been an increase in conventional seat strength over the past 50 years. By the 2000s, most seats are 1,700–3,400 Nm moment strength. However, the safety of a seat is more complex than its strength and depends on many other factors.     

地下水污染与防治技术综述

本文简要地说明了我国地下水污染现状;详细地介绍地下水污染修复新技术的分类：物理法,化学法,生物法。复合处理技术,且重点介绍了PRB技术;并针对我国地下水研究现状和存在的问题作一些建议,为地下水资源保护和合理利用提供依据,为相关领域的研究提供参考。     

环境保护与科学发展

环境保护是实现科学发展的基础和保障。本文阐述了环境保护与科学发展的关系,分析了中国、尤其是黑龙江省环境资源状况。环境保护已成为中国经济社会发展的重要制约因素。从转变思想观念、完善环境经济政策和技术政策、改善环境保护的法制环境、解决突出环境保护问题等方面,提出了环境保护要保障经济社会发展全局,经济社会发展也要充分考量环境保护的具体措施。     

企业职工心理安全影响因素的研究与分析

通过引入因果图法和层次分析法,将影响心理安全的因素用因果图进行分析和表示,然后根据一定的内在机理将因果图转换成AHP的层次结构模型,求得个因素事件的权值,得出个因素事件的重要程度,从而确定关键因素,即为预防的重点。     

电气火灾残留物的SEM分析方法研究

通过分析电气火灾的形成原因,总结出该类型火灾的残留物种类。然后利用电焊机和电阻炉等设备分别制备出铜铝导线的一、二次短路熔痕和火烧熔痕,电热丝的通电过热和火烧熔痕,并运用了目前一种新式有效的显微结构分析工具——扫描电子显微镜,对以上样品的表面进行微观形貌的观察、比较与分析。通过分析讨论,可以发现电气火灾残留物在火灾前后其表面的微观形貌特征存在明显不同。根据这些特征能够很轻易的鉴别出电气设备在火灾发生前的使用状态,从而推断出火灾是否由该电气设备引发而起。此项结论能够为从事火灾调查的人员对电气火灾原因的准确认定提供可靠依据,也能够为扫描电子显微镜技术的应用领域进行拓宽提供一些帮助。     

Application of environmentally conscious manufacturing strategies for an automotive component

Application of appropriate environmentally conscious manufacturing strategies enables the sustainable development of products and processes. Automotive component manufacturers recognise the potential of applying appropriate strategies for attaining Triple Bottom Line benefits. In this context, three strategies such as eco-efficiency, waste minimisation and material efficiency are being applied to minimise environmental impacts associated with the manufacture of automotive products and its associated processes. A case study of an automotive component manufacturing firm has been exemplified. After conducting the study, the potential environmental impact was reduced by 20% and eco-efficiency was improved by 13%. Further, improvements have been observed in terms of overall resource consumption and material efficiency. The overall power consumption was reduced by 18% and weight of the component was reduced by 11%. The study aimed at improving the sustainable performance of product by incorporating green and environmentally friendlier manufacturing practices.

Abbreviations: USEPA: United Nations Environmental Protection Agency; OECD: Organisation for Economic Co-operation and Development; WBCSD: World Business Council for Sustainable Development; Eco-QFD: Environmental Quality Function Deployment; WCED: World Commission on Environment and Development; LCA: Life Cycle Assessment     

自镇流荧光灯如何实现节能设计

本文从荧光粉的选择,荧光粉比例的调配,生产工艺的改进,镇流器的调试等方面,介绍了提高自镇流荧光灯（节能灯）光效和光通量的设计思路,并用实例证明了所例举设计方法的有效性。     

衡阳市企业执行新企业会计准则情况的调查与分析

目前,新会计准则在我国上市公司中实施已有六年多时间,然而在我们衡阳市企业中的运用情况如何,企业的反映如何,在实施过程中有哪些问题和难题,这些都是普遍关注的问题.因此,为进一步了解新会计准则的实施情况,发现并解决实施过程中存在的问题和难题,课题组对衡阳市相关企业的新会计准则实施情况进行了调查和分析.参8.