大型原油储罐热喷涂防腐蚀技术的应用

金属热喷涂技术是一种有效的长效防腐蚀手段，常用于金属结构的腐蚀防护。从钢结构腐蚀及热喷涂长效防护的角度，阐述了在大型原油储罐建设中使用热喷涂防腐蚀技术的可行性和经济性，并对其热喷涂防腐蚀工艺作了简要说明。     

舰用武器装备环境工程实施探讨

针对舰用武器装备经受“三高一多”的恶劣海洋环境特点,介绍了环境工程在舰用武器装备研制过程中的实施途径,包括环境工程管理,环境适应性分析、设计和试验等工作的重点,最后提出了收集环境信息、完善维护细则和进行环境整体防护等环境工程工作的建议。     

白铜和黄铜在SO2气氛中的腐蚀对比

通过SO2气体腐蚀试验、腐蚀表面的形貌观察和产物分析,对白铜和黄铜进行了对比研究。结果表明:两种铜的质量损失与SO2体积分数均成线性关系,在SO2污染环境中白铜的抗蚀能力优于黄铜;黄铜腐蚀产物主要为CuSO4.5H2O、Cu4(SO4)(OH)6.2H2O和Cu2O,白铜腐蚀产物主要为Cu4(SO4)(OH)6.2H2O和Cu2O。     

防空导弹的综合环境可靠性试验剖面研究

为有效地进行防空导弹综合环境可靠性试验,根据试验剖面的模拟真实性、应力适当性和试验可操作性的要求,确定以防空导弹随战车值勤和空中飞行为主要试验阶段。主要研究了地面和空中2种试验环境中温度应力、湿度、振动应力和电应力等环境参数的确定,并给出了相应的原则或计算公式。最后讨论了如何确定试验时间的问题,并绘出了综合环境可靠性试验剖面图。     

大气腐蚀起始过程中的微液滴现象研究

微液滴现象是一种新发现的实验现象,当易被腐蚀的金属表面上预先形成有腐蚀性主液滴时,在合适的条件下,主液滴的周围有更小的微液滴出现并不断扩展.微液滴的形成和扩展遵循一定的规律,并与大气腐蚀起始过程密切相关.电化学极化结果显示,大气腐蚀过程中的腐蚀电流是微液滴形成和发展的推动力.     

Spatial variations in daily average CO2 concentrations above wetland surface of Xianghai National Nature Reserve, China

Horizontal and vertical variations of daily average CO2 concentration above the wetland surface were studied in Xianghai National Nature Reserve of China in August, 2000. The primary purpose was to study spatial distribution characteristics of CO2 concentration on the four levels of height(0.1 m, 0.6 m, 1.2 m and 2 m) and compare the differences of CO2 concentration under different land covers. Results showed that daily average CO2 concentration above wetland surface in Xianghai National Natural Reserve was lower than that above other wetlands in northeast China as well as the worldwide average, suggesting that Xianghai wetland absorbed CO2 in August and acted as“sink” of CO2. The horizontal variations on the four levels of height along the latitude were distinct, and had the changing tendency of“decreasing after increasing” with the increase of height. The areas with obvious variations were consistent on different levels of height,and those with the highest variations appeared above surface of shore, sloping field, Typha wetland and Phragmites wetland; the vertical variations were greatly different, with the higher variations in Phragmites wetland and Typha wetland, and the lands near the shore and the sloping field with the lower variations. Spatial variations of daily average CO2 concentrations above wet!and surface were affected by surface qualities and land covers.     

Application of compost in agricultural practice could potentially cause contamination of foodstuffs with pathogenic bacteria such as Escherichia coli O157:H7. This study investigated pathogenic bacteria in compost collected from the compost facilities, an

IntroductionIncreasing public interests have been concerned onsafety foods and the environmental aspects recently,especially on the so-called organic foods , which are madefromcrops grown with organic fertilizers or compost but notchemical fertilizers .Pu…     

会计集中核算的实践与思考

会计集中核算是会计管理体制改革的一项举措,从试点单位初步运行情况看,其作用明显,产生了较好的社会效益和经济效益,为防止各种违纪行为筑起了一道坚固的防线。虽然会计集中核算有一定的局限性,但它作为会计管理体制改革的一项有益尝试,应在有条件的部门积极推行     

清洁生产在制药企业中的实施

清洁生产是一种全新的发展战略,是环境保护战略具有重大意义的创新,是工业发展的必然选择,对制药企业清洁生产由为重要.随着企业不断的发展,生产规模不断的扩大,污水处理厂的能力接近饱和,已没有扩展的空间,这时,清洁生产由为重要,势在必行.     

江苏省环保信访演变趋势与对策研究

以江苏省为例,着重分析环保信访演变的特点和发展趋势以及产生的主要原因,提出了今后进一步加强环保信访工作的对策措施。