SO2在碳钢初期大气腐蚀中的作用

通过自建的模拟大气腐蚀系统,借助金相显微镜、扫描电镜(SEM/EDX)、X-射线衍射(XRD)和x-射线光电子能谱(XPS),研究了SO2对碳钢初期大气腐蚀行为的影响,并进一步用原子力显微镜从更微观的角度观察了在SO2环境中初期阶段腐蚀形貌变化.研究结果表明:在SO2污染大气环境中,随SO2浓度的升高碳钢腐蚀加快.在体积分数为5×10(-6)SO2的大气环境中,碳钢和耐候钢表面腐蚀主要以条状物生长,随着SO2浓度的升高,腐蚀产物的形貌发生改变,在体积分数为5×10(-5)SO2的大气环境中,条状锈和胞状锈同时生长.在锈层中S元素以FeSO4·4H2O的形式存在,腐蚀产物中还有γ-FeOOH.SO2在初期阶段加速了碳钢的腐蚀,降低了碳钢的耐蚀性.     

浅析生态文明理念对内蒙古草原旅游资源开发重要性

生态文明是继农业、工业文明之后,适应新形势而提出的.以直接解决与人类生存相关的生态问题为己任,用于指引人们实现可持续发展为目标.在内蒙古地区,草原是最具内蒙古特色和开发价值的资源,然而在近几十年的开发中严重违反了生态文明理念,以致出现草场退化、生物生存危机等状况.在当前内蒙古草原出现的严重问题的情况下,很有必要去探寻生态文明理念的重要价值.结合中国传统文化中天时地利人和的重要思想,实现在“因时制宜、因地制宜、以人为本及各方因素协调共促”理念下新的草原开发.     

生态网络分析在滨海新区战略环评中的应用

以滨海新区卫星影像和规划图为基础资料,在GIS技术支持下运用景观格局分析法和网络结构分析法对滨海新区的生态网络现状、总体规划及战略规划进行评价.在考虑不同生态用地斑块间的距离和景观阻力的基础上,运用重力模型对不同斑块间的相互作用力进行定量分析.结果表明, 滨海新区2008年生态网络现状景观破碎化严重且连通性差;总体规划侧重于斑块间的廊道连接,景观连通性高,但大尺度斑块比例小;战略规划侧重于大尺度斑块的构建,但连通性较差.根据景观生态学原理,提出构建滨海新区科学合理的生态网络建议,促进生物多样性的保护.     

The integration of HAZOP expert system and piping and instrumentation diagrams

The main purpose of hazard and operability (HAZOP) analysis is to identify the potential hazards in the process design which nowadays is generally developed through a computer aided design (CAD) package. Due to the time and effort consuming nature of HAZOP, it is not done in every engineering firm for every design project. To make HAZOP an integral part of process design, an integration framework is proposed in this paper to seamlessly integrate the commercial process design package Smart Plant P&ID (SPPID, Intergraph) with one of the HAZOP expert systems (named as LDGHAZOP) developed by authors. This integration makes it possible to perform HAZOP analysis easily at anytime of the whole lifecycle of a chemical plant as long as the process design is available, which might help the improvement of design quality. One industrial case study is used to illustrate the ability of the integrated system.     

四川省高速公路网规划调整方案生态敏感性分析

公路网的规划实施会占用大片土地,消耗大量的资源,对整个规划区域的生态环境造成不可忽视的影响。生态环境影响评价是公路网规划环境影响评价的主体内容之一,是生态环评的重点。本文在充分分析了四川省高速公路网规划调整方案的特点之后,有针对性的提出生态敏感性的评价方法。通过对路网中各个路段的生态敏感性指数的计算,定量的分析不同路段对生态环境的影响程度。为相关部门对公路网的规划提供决策依据。     

工作场所有害因素检测的质量控制

按照工作场所有害因素检测的环节和过程,把质量控制分为现场采样的质量控制,样品交接、流转和贮存的质量控制,实验室分析的质量控制,数据处理和报告编制的质量控制。对工作场所有害因素检测各个环节中的关键点质量控制进行了讨论,提出质量控制的具体要求。     

生物柴油副产物甘油的去杂工艺条件研究

采用絮凝的方法,对桐油制备生物柴油副产物甘油的去杂工艺条件进行了研究。考察了不同絮凝剂及絮凝剂用量、pH值、搅拌时间、反应温度等条件对甘油絮凝去除杂质的效果和甘油回收率的影响。结果表明:采用硫酸铝絮凝剂,在絮凝剂用量为0.2%,pH值为6.0,搅拌时间为5 min,反应温度为20℃的条件下去杂效果最好,甘油回收率为80.45%。     

活性粉煤灰增湿脱硫机理及数学模型的研究

在双膜理论和传质理论基础上分析了活性粉煤灰增湿脱硫机理,并建立了简化的脱硫模型,考虑烟气流量和脱硫剂加入量两个脱硫效率的影响因素时,将数学模型的计算值与实验值进行了比较,结果比较吻合。     

Three-dimensional biogenic C-doped Bi2MoO6/In2O3-ZnO Z-scheme heterojunctions derived from a layered precursor

Novel 3D biogenic C-doped Bi_2 MoO_6/In_2O_3-ZnO Z-scheme heterojunctions were synthesized for the first time, using cotton fiber as template. The as-prepared samples showed excellent adsorption and photodegradation performance toward the hazardous antibiotic doxycycline under simulated sunlight irradiation. The morphology, phase composition and in situ carbon doping could be precisely controlled by adjusting processing parameters. The carbon doping in Bi_2 MoO_6/In_2O_3-ZnO was derived from the cotton template, and the carbon content could be varied in the range 0.9–4.4 wt.% via controlling the heat treatment temperature. The sample with Bi_2 MoO_6/In_2O_3-ZnO molar ratio of 1:2 and carbon content of1.1 wt.% exhibited the highest photocatalytic activity toward doxycycline degradation,which was 3.6 and 4.3 times higher than those of pure Bi_2 MoO_6 and Zn In Al-CLDH(calcined layered double hydroxides), respectively. It is believed that the Z-scheme heterojunction with C-doping, the 3D hierarchically micro–meso–macro porous structure, as well as the high adsorption capacity, contributed significantly to the enhanced photocatalytic activity.     

胶东半岛及附近海域地震活动性异常研究

根据胶东半岛及附近海域地震活动性参数的研究,对2012年存在的地震活动性异常演化情况进行跟踪分析,对2013年度出现的新地震异常进行分析,获得大震孕震过程时、空综合变化结果,提出胶东半岛及附近海域的震情趋势判定意见。