强化井喷失控应急救援队伍建设的思考

数据在不同格式和应用程序之间的迁移通常不只是数据格式之间的简单转换,转换常常包含很多复杂的部分,最终结果很可能与目标系统的需求不匹配,为了保留数据的关键部分,将其无损地加载到目标应用程序中,可能需要调整数据模型、内容、描述信息或坐标系统,而FME软件对此可提供良好的解决方案.本文探索和研究FME软件在GIS数据处理中的一些典型应用,经多个项目验证,FME在数据处理及转换中发挥了便捷、快速、高效、灵活的特点,在提高GIS数据处理作业效率、增强数据质量检查准确度、降低数据更新维护成本等方面发挥了重要作用.     

Photocatalytic degradation characteristics of different organic compounds at TiO2 nanoporous film electrodes with mixed anatase/ rutile phases

Nanoporous TiO2 film electrodes with a mixed anatase/ rutile phase were prepared by dip-coating TiO2 nanoparticle colloid onto Indium Tin Oxide (ITO) conducting glass substrates and a subsequent calcination process at 700 degrees C for 16 h. The photocatalytic oxidation of a wide range of organic compounds has been studied using the photoelectrochemical method under the conditions that the photohole capturing step controls the overall photocatalytic processes. The characteristics of the mixed anatase/ rutile phase TiO2 film electrodes were compared with pure anatase phase TiO2 film electrodes to identify the key differences between them. The results revealed that different organic compounds, despite their difference in chemical entities, can be stoichiometrically mineralized at the mixed-phase TiO2 electrode under diffusion-controlled conditions, which is in great contrast to the situation at the pure anatase phase TiO2 electrode. The exceptional ability of the mixed-phase TiO2 electrodes for mineralization of organic compounds and their remarkable resistance to the inhibition by aromatic compounds at higher concentration has been explained by the synergetic effect of the rutile and anatase phases. For this type of mixed phase electrodes, upon absorption of UV light, the electron-transfer pathway from anatase phase to rutile phase facilitates the separation of photoelectron and photohole, extending the lifetime of the photoelectron and photohole.     

普适计算环境下位置模型研究进展

位置模型是实现普适计算/物联网环境下物理世界与信息系统融合的核心。从位置模型基本理论和方法、位置推理能力、位置信息表达方法、基于本体位置模型、地理空间本体等方面深入分析了位置模型国内外研究进展,尤其是对现存的一些著名基于本体位置模型进行了比较分析。针对现有位置模型缺乏统一概念模型,普遍存在位置逻辑简单、推理能力弱等问题,指出综合运用位置理论、本体论、地理空间等多学科交叉融合研究手段构建具有推理能力的统一位置模型的研究思路。     

大淑村矿2~#煤层摸顶分层回采及安全措施研究

针对大淑村矿2#煤层摸底掘进回采技术出现的巷道变形收敛严重、回采率较低、安全性较差等问题,提出摸顶掘进与摸底回采新技术,优化开采工艺参数,同时还对可能发生的事故制定相应的安全技术措施。实践表明,摸顶掘进与摸底回采技术安全可靠,经济效益显著,可为类似矿山开采提供借鉴。     

Development of chemical oxygen demand on-line monitoring system based on a photoelectrochemical degradation principle

A simple, rapid, and sensitive on-line chemical oxygen demand (COD) determination method has been proposed and experimentally validated. The method is based on a photoelectrochemical oxidative degradation principle and operates under a continuous flow mode. The method employs a specially designed thin-layer photoelectrochemical cell that incorporates a highly effective nanoparticulate TiO2 photoanode. This approach overcomes many problems associated with the conventional COD determination techniques such as long analysis time, consumption of expensive and toxic reagents, production of secondary toxic waste, and poor reproducibility. The effect of important experimental parameters on the analytical signal generation was systematically investigated, and the optimum conditions were obtained. The method was successfully applied to determine the COD of real samples from various industrial wastewaters. The COD value of real samples determined by this method agreed well with the standard dichromate method. The assay time of 1-5 min/sample can be readily achieved. A practical detection limit of 1 mg L(-1) COD with a linear range of 1-100 mg L(-1) was achieved under the optimum conditions.     

三维场景交互漫游的研究与实现

给出了一个三维场景交互漫游系统的框架,着重介绍了三维空间漫游的方法及实现,包括键盘漫游、路径漫游、记录漫游路径,记录场景动画,碰撞检测等,并提出按线性样条路径漫游时转角处抖动问题的解决方法,这些方法都已应用到作者开发的系统当中,收到了满意的效果。     

产腈水合酶菌株的驯化及其产酶条件优化研究

以Nocardia sp LNSY06为出发菌株,通过逐渐增加培养基中丙烯腈的浓度重复继代培养,得到1株酶活为62.5U/mg的腈水合酶高活力菌株,酶活比出发菌株提高了15倍。研究结果表明:驯化的最优条件为:葡萄糖为20g/L,诱导剂脲为0.06g/L,Co2+为0.3g/L,丙烯酰胺为10%,反应pH为7,温度为28℃,底物丙烯腈体积分数<4%,产物丙烯酰胺的质量分数<20%。     

高突矿井开采下保护层设计分析

以峰峰某矿突出煤层为例,分析了高突矿井多煤层开采时主要区域性防突措施为上行式开采的可行性,并分析了选择下保护层开采层位和设计应注意的事项.     

一种面向室内定位的3D建筑模型构建方法

全球导航卫星系统提供的位置服务在室外已得到广泛应用,如今人们也希望能够在室内空间获取类似的位置服务,而面向室内空间的定位技术尚在研究中。分析室内空间的特殊性及复杂性,总结面向室内定位的3D建筑模型的特征,介绍现有的室内3D建筑建模的方法和存在的问题,在此基础上提出一种面向室内定位的3D建筑模型的构建方法。实验证明该方法是一种经济、高效、实用的室内3D建筑建模方法,可广泛应用在小范围的建筑物、地下洞室、隧道等空间内的3D建筑模型构建及相关研究中。     

基层战士经常性思想政治工作专家系统

根据部队思想政治工作的实际需要,提出了一种基于模糊数学的心理诊断及疏导专家系统.考虑到某些知识具有的模糊性和不确定性,系统采用了框架和模糊产生式规则相结合的知识表示方法,结合正向模糊推理技术和依据最大匹配可能性分布平均值选择的冲突消解策略,给出了实例的具体实现过程.结果表明,该方法可靠有效,具有一定的实际应用价值.