浅谈皮江法炼镁项目环境影响评价中污染源分析及污染治理措施

对皮江法炼镁项目的环境影响评价进行了各种污染源(包括废气、废水、噪声、固体废弃物)的分析,并制定了有效的污染治理措施,提出了固体废弃物综合利用途径。     

双边塑性碰撞调谐质量阻尼器的位置控制

建立双边塑性碰撞调谐质量阻尼系统的动力学模型,根据Poincare映射图,研究了系统的周期运动和分岔,以及碰撞对结构稳定性的影响,并且分析了误差动力学方程的收敛速度与系数矩阵A的关系。利用同步反馈控制法对双边塑性碰撞调谐质量阻尼系统进行位置控制,数值计算结果验证了该方法是可行有效的。     

一种测量任意形状物体上冲击载荷的分析方法

本文分析了任意形状物体上的冲击载荷的测量过程 ,提出了一种能够降低噪音扩张的分析方法     

司法考试冲击法学本科教育的原因及对策

我国实行统一司法考试后,司法考试对法学本科教育的传统模式形成了很大冲击。产生这一现象的主要原因在于人们把司法考试对法科学生能力的评价作用过于绝对化。法学本科教育应对司法考试冲击的策略应是以确保培养法科学生专业素养的法学教育为前提,努力提高学生司法考试通过率。     

美发剂对人体健康的影响

当今社会，美发已经成为了一种潮流，这其中染发剂、烫发剂功不可没．但是，不可否认的是，美发剂在满足人们爱美心理的同时，也在吞噬着人们的健康，它就象一个隐形杀手在威胁着人们的生命．本文主要阐述了染发剂、烫发剂的种类和化学成分，染发剂、烫发剂的作用机理及美发剂对人体健康的影响．     

对拉面与单壁面开采的矿压观测数据分析

通过对拉面开采的矿压进行观测，并将观测结果与本区已采完的单工作面的矿压结果进行分析，提出了类似有冲击危险的煤层中开采的可行建议。     

Pre-assessment on the loss and impact caused by large-scale flood disasters

Through intensive studies, we have established an index system for evaluating the loss and impact caused by large-scale flood disasters, and constructed a methodological system for pre-assessing the loss and impact caused by large-scale flood disasters. Through numerical simulation, submerged characteristics of large-scale flood can be determined. According to the characteristics of spatial corresponding distribution between land-use types and types of disaster-affecting subjects, we have realized spatialization for social and economic statistic data, and have completed spatialization evaluation on the loss and social impact caused by large-scale flood disasters using the spatial analytical function of GIS software. It is possible that large-scale flood can occur in the lower Yellow River. Flood management requires pre-assessment on the loss and impact caused by flood disasters. Nevertheless, there is no appropriate pre-assessment method for the lower Yellow River at present. By imitating the flood happened in Yuanyang, the north bank of the lower reach of Yellow River in 1958, we did pre-assessment on the loss and social impact caused by the overflow flood. We found that this method can be used to predict the types, quantity and spatial distribution of economic loss caused by large-scale flood disasters. This method can determine population affected by disasters and degree and spatial distribution of disasters. Indirect loss can be predicted as well using this method.In general this method can meet theneeds of regions affected by flood for planning and making decisions in fighting floods and reducing loss.     

当代科技革命的特点及其启示

当代科技革命浪潮在全球兴起,以科技竞争推动经济竞争已成为新一轮科技革命的焦点.我们应当正确认识当代科技革命的特点,分析其对世界政治经济的影响,制定实施一系列科技政策措施,迅速提高我国的综合国力,实现经济、社会、环境的协调发展.     

GDL-1型高强韧贝氏体钢的不可逆回火脆性

本文研究了GDL-1型高强韧性贝氏体钢,在空冷状态下的回火冲击性能变化以及对应的显微组织和断口金相特征.结果表明,该钢经920 ℃加热空冷后获得条束状过渡形态的贝氏体加少量岛状贝氏体组织.在400 ℃～600 ℃的温度回火,分布于BF条束间的亚稳态残留奥氏体开始大量分解形成沿条束界连续分布的碳化物,在BF条内的高密度位错区也诱导析出碳化物,导致在条束界产生高应力集中而引发准解理和解理开裂,出现不可逆回火脆性,冲击能量显著降低.由于钢中的Si和Mn在原奥氏体晶界偏聚,抑制碳化物析出.在原奥氏体晶界未能沉淀出连续分布的碳化物,因此未见沿晶解理开裂特征,对应的断口金相呈条形准解理和解理的特征,其尺寸分别与BF条和束尺寸相吻合.该材料的不可逆回火脆性出现的温度范围与大多数合金结构钢相比提高约200 ℃.