���мв�ı��β�����Ѩ����������ѹ����ȷ��

建设地下盐穴的盐矿主要有两种：盐丘和薄盐层。薄盐层中经常含有平面上连续分布的夹层和散布的杂质。这些夹层和杂质主要有石膏、泥页岩、白云石和石灰石。我国江苏金坛盐矿即属于该类含有夹层和杂质的薄盐层，与盐丘相比，含有夹层和杂质的薄盐层以下特点：①不同岩性的夹层造成盐腔剖面上岩性的变化；②盐层几何尺寸横向大，纵向小。文章主要介绍了国外运用解析方法和数值分析的方法确定含有夹层的薄盐层中盐穴储库运行压力的方法，主要认识是：①最大运行压力与盐层和夹层的破裂压力有关；②最小运行压力要保证盖层不发生坍塌，盐腔体积不发生大幅度减小；③周期性变化的运行压力会引起地应力的变化，导致不同岩性层位形变不同，甚至发生整体滑移。     

量子搜索算法对NTRU密码体制的作用

Lattice-based cryptosystems rely on certain lattice problems for their security, such as the shortest vector and the closest vector problems. NTRU is a kind of lattice-based public key cryptosysytem gaining much attention because of its high efficiency. Its encryption and decryption use a mixing system suggested by polynomial algebra combined with a clustering principle based on elementary probability theory. With the availability of quantum computers, the security of cryptosystems based on classical mathematic problems needs to be reevaluated. Since lattice reduction is the main threat to lattice-based cryptosystems, lattice reduction using quantum search algorithms are analyzed to evaluate the security of NTRU in this paper. According to our results, original security parameters proposed for NTRU should be increased in the event that Grover's quantum search algorithm is used for lattice reduction.     

加热炉炉辊及内、外环失效分析报告

本文对包钢薄板厂加热炉炉内部件(炉辊及其附件)进行宏观观测及显微观察，详细分析了其失效形式及原因，并提出相应对策。     

沈阳化工学院综合信息管理系统

沈阳化工学院综合信息管理系统是根据原始模型、采用结构化方法与原型法相结合的技术开发研制的.系统包括90余种报表的数据输入、修改、查询、报表生成、打印及数据备份与恢复的功能.该系统具有很强的容错性和检错功能,友好的用户界面,使用方便,易于扩充,适用于各类高校的年鉴统计,已在汉字操作系统 CC-DOS 2.13E,汉字 DBASE III 软件环境支持下,在 IBM-PC 及其兼容机上实现.     

锆英石细粉对红柱石基耐火材料性能的影响

研究了锆英石细粉对高纯红柱石基耐火材料的烧结、抗蠕变性和抗热震性的影响。试验结果表明 ,加入适量的锆英石细粉 ,不但可促进红柱石制品的烧结 ,而且可改善制品的抗热震性能 ,但对其抗蠕变性不利 ;其适宜的加入量为 8%左右。借助XRD和SEM手段 ,分析了锆英石细粉改善材料抗热震性和有害于材料抗蠕变性的机理及材料的显微结构     

论工程内业在工程预结算中的作用

与施工图纸相比,工程内业一样不可忽视,它是整个工程过程的反映,管理人员和预结算人员要给与其应有的重视。施工组织设计在生效之前,要取得建设单位和建立单位的签字盖章,这是设计生效的重要标志。     

聚丙烯/煤矸石复合材料热降解动力学研究

通过熔融共混制备了聚丙烯/煤矸石(PP/CG)复合材料,并采用热重分析(TG-DTG)法研究了共混体系的热降解动力学,利用Kissinger法、Flynn-Wall-Ozawa法和Friedman法计算了共混体系的表观活化能。结果表明:共混体系的热降解均表现为单一个失重阶段的降解过程,说明CG与基体PP之间具有良好的相容性;随CG质量分数增加共混体系的起始降解温度(To)和最大失重速率温度(Tm)呈升高趋势,说明体系热稳定性逐渐提高;共混体系的活化能随CG的添加量变化,共混体系的活化能在煤矸石含量为20%达到最大值,比纯PP提高了20.29kJ/mol。     

Nanomaterial‐enabled Rapid Detection of Water Contaminants

Water contaminants, e.g., inorganic chemicals and microorganisms, are critical metrics for water quality monitoring and have significant impacts on human health and plants/organisms living in water. The scope and focus of this review is nanomaterial‐based optical, electronic, and electrochemical sensors for rapid detection of water contaminants, e.g., heavy metals, anions, and bacteria. These contaminants are commonly found in different water systems. The importance of water quality monitoring and control demands significant advancement in the detection of contaminants in water because current sensing technologies for water contaminants have limitations. The advantages of nanomaterial‐based sensing technologies are highlighted and recent progress on nanomaterial‐based sensors for rapid water contaminant detection is discussed. An outlook for future research into this rapidly growing field is also provided.