板桥凹陷原油轻烃地球化学特征

黄骅坳陷板桥凹陷原油轻烃整体表现为富链烷烃、贫芳烃和环烷烃含量相对较高的特征。C₇和C₆轻烃参数一致指示原油母源有明显高等植物有机质的输入,母质类型为混合型。庚烷值和异庚烷值较高,原油生成温度在108.7~129.8℃之间,说明原油主要为成熟阶段的产物。Mango参数K₁值大致在1.0附近,符合轻烃稳态催化理论;K₂值较高,源岩具有淡水湖相沉积的特点。碳环优势指数六环优势明显,指示出陆相原油的特点。根据轻烃参数特征可将研究区原油分为:来源于典型混合型有机母源的正常成熟原油、生物降解型原油以及来源于偏腐泥型母质的特殊成因原油3种类型。     

有序介孔金属氧化物研究进展

本文介绍了有序介孔金属氧化物的三种合成途径:电荷密度匹配途径、中性模板途径和配合物辅助模板途径,然后对Al,Zr,Ti,Mn,Nb等典型介孔金属氧化物的合成现状、合成机理及其应用研究情况进行了总结归纳和评述.在此基础上指明了未来这一领域的发展方向.     

金刚烷最新研究

金刚烷是近 30年来发展起来的一种新型精细化工原料。简要介绍了金刚烷的分子结构、性质及其主要用途 ,重点对近年来国内外报道过的金刚烷合成方法进行了评述 ,在此基础上指出了金刚烷化工的未来发展趋势。     

靖边气田气井产能核实及合理配产方法

靖边气田属于低渗透气藏,且储层非均质性强,产能核实难度大。经技术引进、理论研究、现场试验等工作,在不断总结、完善的基础上,形成了适应靖边气田地质特征的气井产能核实及合理配产方法。在气田开发初期,主要采用改进完善的修正等时试井技术核实气井产能;进入气田开发阶段,主要采用稳定“一点法”和产量不稳定分析法进行气井产能核实。实践表明,产能核实结果符合气井实际生产能力,证明这些技术较适合于低渗透气藏。在进行产能核实的基础上,通过理论和实践的紧密结合,逐步形成了多种配产方法,如经验法、采气曲线法、双目标优化法、物质平衡法、节点分析法、数值模拟法等。实际配产中,一般采用多种方法进行综合确定,从而有效指导了气井的合理生产,提高了气田开发的科学性和技术水平。     

The elements of forming traditional Turkish cities: Examination of houses and streets in historical city of Erzurum

When the historical parts of cities—which are the cultural mosaics and which reflect the feelings, thoughts, tendencies, life experiences and the accumulations of the periods in which they were built—begin to disappear, it affects the historical identities of the cities negatively. Investigating, learning, documenting and transferring to the future the values of these spaces, which are bridges between past and future, are vitally important for the maintenance of the cities. This analytical study carried out in Üç Kümbetler and its vicinity in the historical city of Erzurum—where historical and traditional urban elements such as religious buildings, traditional houses, streets, and fountains are intense—aimed at fulfilling these ends.     

A Novel Approach for Bolted T-Stub Connections

This paper reports an investigation into new connection types and their behaviors determined using full-scale experiments. T-shaped connections were created using the IPE standard profile. The aim of this study was to analyze the influence of T connections based on the IPE standard profile, height of beam to height of T-stub joint (H) of T-stub joints, and lengths (X) of T-stub joints on the behavior of steel connections, in order to provide the necessary data for improving Eurocode 3 and enable efficient use of residue IPE standard profiles and back to the consumption cycle. While the moment resistance values increased with an increase in H from H_min to H_max in model groups with X of 126 mm, and the energy dissipation increased with an increase in H from H_min to H_max and also with an increase in the lengths (X) of T-stub joints from 54 to 126 mm.     

黄河花园口段不同泥沙含量水体的多角度偏振研究

悬浮泥沙一直是黄河治理过程中面临的一个重大问题,在黄河泥沙物理和数学模型的开发等方面都取得了一定的进展,但是通用模式和高精度的模式一直还未建立起来,因此现阶段提高定量的精度已经成为众多研究水体泥沙学者的研究目标.本文对黄河花园口段水体进行多角度偏振反射研究,通过大量实验挖掘不同泥沙浓度的黄河水体不同的偏振特征,为黄河水体悬浮泥沙的偏振定量研究提供参考.     

Influence of Ionic Liquid-Based Metal–Organic Hybrid on Thermal Degradation,Flame Retardancy,and Smoke Suppression Properties of Epoxy Resin Composites

A new multifunctional ionic liquid-based metal–organic hybrid (PMAIL) was synthesized by anion exchange between as-synthesized phosphonate-based ionic liquid and phosphomolybdic acid and applied to epoxy resin (EP) as an efficient flame retardant. As expected, with only 1 wt% addition of PMAIL, the char yield of EP-PMAIL1 composite at 700 °C was significantly improved by 108.3% from 12.0% for neat epoxy resin to 25.0%, demonstrating the outstanding catalytic charring effect of PMAIL. Meanwhile, EP-PMAIL6 composite (6 wt% addition) can reach V-0 rating in the UL-94 vertical burning tests easily, and its peak heat release rate and total smoke production of EP-PMAIL6 were dropped by 31.0 and 15.4%, respectively, compared with neat EP. Moreover, the results from cone calorimetry tests showed that the char yield of EP-PMAIL6 was enhanced by 162% from 9.5 to 24.9% compared with neat EP, resulting in a strong intumescent char layer structure with outstanding fire retardance and mechanical properties. The thermo-oxidative stable protective layer retarded the transfer of heat and flammable volatiles during combustion and protected the epoxy matrix from further degradation. In conclusion, our results might provide a new perspective for producing composites with excellent flame retardancy and smoke suppression properties using ionic liquid-based metal–organic hybrid.