夯能的传播和夯实柱体的形成（强夯加固机理探讨之三）

本文简要的介绍了波动理论。振动的传播就是能量的传播。沿途各点波的强度及其沿途的变化可用沿途各点的振幅的大小及其变化来表示。夯锤下存在一维波动，它决定了夯坑下夯实体按柱体形状往深部延伸发展。本文讨论对强夯工程夯点布置设计有重要参考价值。     

实验药包爆炸应力波测试技术探讨

用压电晶体压力传感器测定实验药包在介质中产生的爆炸应力波,没有反映冲击能（E_）和膨胀能（E_b）对介质进行加载的实际情况。本文指出电阻应变传感器具备记录压缩相和拉伸相的能力,认为超动态应变测试系统适宜于测定爆炸应力波,并给出了用该系统对爆炸应力波进行测定的结果。     

尿素装置节能技术改造实例分析

介绍了尿素装置节能技术改造的方案。本方案实施后,尿素装置节约蒸汽98400 t/a,节约循环水2496万t/a,节约合成氨960t/a,折算节标煤共计16221.02 t/a,节能效益明显,其综合能耗可达到先进水平。     

工业涂料市场营销理念与策略

分析了工业涂料的市场特点,评述了传统营销和市场营销的理念差异,提出了市场营销的主要策略。     

SAGD井口安全配套工艺适应性研究

蒸汽辅助重力泄油技术(Steam Assisted Gravity Drainage,简称SAGD)是国际超稠油开发的一项前沿技术,具有高的采油能力、高油汽比、较高的最终采收率及降低井间干扰,避免过早井间窜通的优点。但由于其生产的特殊性,高干度蒸汽的连续注入,存在高温、高压、大排量、大载荷、闪蒸等恶劣工况,采用常规的油井井口安全配套工艺难以满足SAGD油井生产安全需求,为解决这一问题,本文在已经形成的SAGD井口安全配套工艺基础上,开展"SAGD井口安全配套工艺适应性研究"项目研究意义重大,保证了SAGD生产安全稳定进行。     

广东石油分公司天然气加气业务发展战略研究

世界各国面临气候变化的挑战,人们将目光投向最清洁的化石能源——天然气。天然气也是汽车理想的替代燃料,以开拓天然气零售和直分销业务作为燃气业务拓展主攻方向,抢占先机积极推进天然气加气网点建设投营和天然气直分销业务,快速提高天然气市场占有率已成为广东石油的发展战略。     

节电技术在轮胎企业中的应用研究

轮胎企业的用电消耗按费用计算大约占了60%以上的成本比重,解决或降低电力消耗中的线路损耗、变压器损耗、无功损耗、电源品质损耗、电机低效损耗、照明低效损耗,合理利用太阳能等,可以为企业带来可观的节电、减人、提质效益。     

稀乙烯制乙苯在节能环保领域的技术及发展方向

介绍了稀乙烯制乙苯工艺中四种现有的节能环保技术,针对其技术现状,进行了技术分析,提出了八项在节能环保领域今后可以探索的课题,使稀乙烯制乙苯工艺具有更好的发展前景。     

Silicon in intericosahedra chains of boron carbide

Interaction between boron carbide and silicon was studied at 1400–1700 ℃ in a vacuum. The results at 1400 ℃ suggest that silicon substitutes a single atom of carbon per formula unit B₁₂C₃, producing a phase with increased lattice parameters. Temperature increase improves the degree of transformation, but at 1700 ℃, the product starts to lose silicon. Analysis of DFT formation energies of configurations with B₁₂C₃ and B₁₂C₂Si stoichiometries shows that B₁₂C₂Si may have two ground states with practically equal stability. The first is B₁₁Si(C-B-C) with silicon in icosahedral polar position, and the second is B₁₂(C^Si^C), where the silicon is in the middle of an angular chain. The latter is suggested to be more favorable during the synthesis, while the former is very close to equilibrium with its precursor B₁₁C(C-B-C), and its formation may be inhibited. Comparison of XRD patterns for the synthesis products and modeled structures seems to confirm this suggestion.     

Rubber effect on metallic dampers used on the supports of steel cross members

There are many strengthening methods made with steel cross members for strengthening the structures with inadequate earthquake behavior. This type of strengthening methods is also effective in buckling of the cross members in the behavior of the structural frames. This buckling may cause partial or complete collapse of the structure. Thus, it is quite important to prevent and limit the formation of buckling in steel crosses. At the TEC 2018, the insulation unit is defined as the elements that can exhibit flexible behavior on the horizontal direction and rigid behavior on the vertical direction under the effect of earthquake loads. The basic principle of using insulation units is that these members can dissipate energy in the carrier system. The originality of this study is to experimentally investigate the damper behavior created by using cylindrical rubber wedges, which can be easily found in the automotive industry, in combination with steel plates and bolts. In this experimental study, the contribution of seismic insulators to the structural element to be strengthened was investigated. The insulators used in this study are considered by analogy with lead-core rubber insulators. As such seismic lead-core rubber insulators move under the influence of lateral loads, the lead core inside makes plastic deformation, thus increasing the damping rate. In this insulator study, it is aimed to use U plates or bolts instead of lead core. While vertical loads are covered by rubber support, horizontal loads will be damped due to plastic deformation of U plates or bolts. The five types of seismic dampers were used as 10 B-type rubber wedge mounted damper (SR), 2 U-type steel plates damper (SP), 10 M6 steel bolted damper (SB), 2 U-type steel plates and 10 B-type rubber wedge mounted damper (SPR), 10 M6 steel bolted, and 10 C-type rubber wedge mounted damper (SBR). These specimens were tested under lateral loading and constant vertical loading. The results obtained at the end of the tests shall be compared considering the strength, stiffness, and dissipated energy capacities of the specimens.