三线城市电动汽车充电设施规划研究

发展电动汽车是落实我国"节能减排"产业政策的重要举措。电动汽车充电设施是电动汽车发展的基础,其规划将直接影响电动汽车的可持续发展。针对三线城市的特点,从充电方式和电动汽车接入对电网的影响出发,确定了三线城市电动汽车充电设施的规划原则、流程和阶段。     

不同构造措施的钢管混凝土边框钢板剪力墙抗震性能试验研究

钢管混凝土边框钢板剪力墙是一种新型抗震剪力墙,为了比较不同构造措施对该新型剪力墙抗震性能的影响,进行了3个剪跨比为1.5的钢管混凝土边框钢板剪力墙低周反复荷载试验.其中,试验模型1为墙体钢板与边框柱钢管焊接,试验模型2为墙体钢板与边框柱钢管螺栓连接,试验模型3为墙体钢板开孔并与边框柱钢管焊接.通过试验研究,比较了各剪力...     

对中国综合风险管理机构体系建设的建议

在大量调研的基础上,分析了我国风险管理机构体系的现状和存在的问题,并以“统筹规划,专人负责,科学管理,共担风险”为原则,以梯形架构为理论基础,提出了对中国综合风险管理机构未来体系建设的一个建议,并对其进行了可行性分析。     

Biochar and cattle manure amendments improve the quality of green waste compost as growing substrate for Centaurea cyanus

Journal of Material Cycles and Waste Management - This study aimed at investigating the impacts of different percentages of biochar (BC) (at 0, 15, and 25%; by vol.) and/or cattle manure (CM) (at...     

英国国防工业安全生产法制体系研究及对我国的启示

为建立健全我国国防工业安全生产法制体系,从构建历程、宏观设计和微观建设要点等方面对英国国防工业安全生产法制体系展开系统研究,并分析当前我国国防工业安全生产法制体系存在的主要问题以及英国国防工业安全生产法制体系建设对我国的启示。结果表明:在宏观设计方面,英国构建以国防安全局为监管主体的高度扁平化监管体系;在微观建设方面,其更加注重国防工业安全生产法律体系的层次性、内容完备性,法律的实操性、更新机制,以及监管职责界定的建设。借鉴英国经验,指出将国防工业安全生产法制体系建设提升至国家战略高度,实现国防工业安全生产专门立法、强化法律可操作性、完善法律制修订机制和科学界定监管职责是我国今后努力的重要方向。     

新型抗风振、耐腐蚀铰链式接续线夹的研究

本文通过实地考察,针对接续线夹发生腐蚀失效的现象进行分析,研制新型接续线夹,并通过机械拉力试验、电阻试验、温升试验、盐雾腐蚀试验对新型接续线夹的性能进行分析研究,证实新型接续线夹性能较现有线夹优异。     

环境检测中地表水检测现状及进展

地表水作为维持人类正常生产生活的重要资源,应作为环境监测的首要任务常抓不懈。现今对地表水的检测工作中仍存在较多不完善之处,应从环境保护的大局出发,应用合理的检测技术,将地表水检测工作提升到新的高度。本文分析了环境检测中地表水的检测现状,并提出了相应的解决措施。     

煤矿采空塌陷对地下水的影响

在煤炭开采过程中,煤炭被采出后其所在地下煤层会形成一定区域的采空区,并使煤层上方的顶板岩层失去支撑,由于顶板岩层的抗拉强度比较有限,因此在其顶板岩层自身重力与上覆岩层压力的影响下,很容易因顶板断裂、破碎而出现采空塌陷问题,这不仅会影响煤矿所在区域的生态安全,同时还会使地下水受到较大的负面影响。为此,本文结合煤矿采空塌陷的特点,围绕采空塌陷对地下水的影响展开了分析,并在此基础上提出了一些较为可行的采空塌陷区域地下水治理保护建议。     

Transformation of hazardous lead into aluminosilicate ceramics: structure evolution and lead leaching

This study investigated crystallization mechanisms for the formation of lead aluminosilicate by sintering lead stabilization with kaolin-based precursors. PbAl2Si2O8 was found to be the only stable lead aluminosilicate in low-PbO system and demonstrates its highly intrinsic resistance to acid attack in leaching test. A three-stage PbAl2Si2O8 formation mechanism was supported by the results of the changing temperature in the system. Amorphization of sintered products was observed in both PbO/kaolinite and PbO/mullite systems at 600–700°C. When the temperature was increased to 750–900°C, the crystallochemical formation of lead aluminosilicates (i.e., Pb4Al4Si3O16, Pb6Al6Si2O21, and PbAl2Si2O8) was observed. Pb4Al4Si3O16 and Pb6Al6Si2O21 were found to be the intermediate phases at 700–900°C. Finally, PbAl2Si2O8 was found to be the only crystallite phase to host Pb at above 950°C. A maximum of 80% and 96.7% Pb can be incorporated into PbAl2Si2O8 in PbO/kaolinite and PbO/mullite systems, respectively, but the final products exhibited different microstructures. To reduce environmental hazard of lead, this strategy demonstrated a preferred mechanism of immobilizing lead into PbAl2Si2O8 structure via kaolin-based precursors.     

Molecular,functional, and cellular alterations of oocytes and cumulus cells induced by heat stress and shock in animals

Environmental Science and Pollution Research - Global warming is considered as the main environmental stress affecting ecosystems as well as physiological and biochemical characteristics, and...