基于流固耦合作用的砂岩地浸采铀效果数值模拟分析

为探究低渗砂岩铀矿在不同因素下的产量变化情况,根据储层有效应力与渗流特性的关系,建立有效应力-渗流数值模型。通过日产水量分析流固耦合作用下储层的产量变化规律,并结合变异系数法分析注入压力、初始渗透率和井间距对产量的影响。研究表明：考虑流固耦合作用下的储层产量会更快进入稳定状态,产量更高;应力敏感性系数越大,有效应力减小对地层渗透率影响越明显。注入压力越大,地层有效应力减小区域下降幅度增大,使地层渗透率增大区域升高幅度增大,导致产量逐渐增多;流固耦合作用下产量随着初始渗透率增大而增多且增长速度较快;流固耦合作用下,随着井间距的增大,注采井间有效应力减小的影响减弱,注采井间渗透率增大趋势也在下降,导致产量逐渐降低。结合各因素变异系数变化可得,注入压力对产量效果影响更明显。本研究有助于建立完整的砂岩铀矿地浸采铀生产方案。     

一种改进的基于110GHz在片S参数测试的HEMT器件寄生电阻提取方法

提出了一种改进的高电子迁移率晶体管寄生电阻提取方法,该方法利用了特殊偏置点 （V_gs > V_th, V_ds = 0 V）的等效电路模型, 推导了寄生电阻的表达式,采用半分析法对寄生电阻进行了优化。1 ~110 GHz S参数实测结果和仿真的S参数一致,证明该方法是有效的。     

From structural ceramics to 2D materials with multi-applications: A review on the development from MAX phases to MXenes

MAX phases (Ti3SiC2, Ti3AlC2, V2AlC, Ti4AlN3, etc.) are layered ternary carbides/nitrides, which are generally processed and researched as structure ceramics. S...     

基于中国传统龙椅文化的现代家具设计研究

"龙椅"是一个具有强烈民族情感的词语,在现代椅子的设计中出现大量以"龙椅"为创作元素的作品,本研究通过对这种艺术现象的成因分析,寻找现代中式家具设计的文化道路.     

A Synthesis of Relationship between Trust and Knowledge Transfer-in the View of Organization Cooperation

Based on the organization cooperation, from the perspective of variable correlation and variable proper ties, this paper describes the research result on relationship between trust and knowledge transfer, in which the elements correlation research is broken down relationship between trust and knowledge transfer, correlation of trust, knowledge transfer and performance relationship, and the interrelationships of trust, knowledge transfer and multiple factors. For trust perspective. There are two structural dimensions of trust： antecedents and media ting variables. Combining the literature at home and abroad in recent years, the existing research results are summed ul and the future research directions are nronosed.     

官能化噻咯合成研究进展Ⅱ.交联法、取代法、硼化法与硅烷化法

官能化噻咯(silole音译)是一种重要的噻咯衍生物,不仅在有机金属合成领域占重要地位,也是建构新型π共轭体系的重要组成部分。本文介绍了官能化噻咯的几种重要合成方法,并对各种方法的特点及适用范围作了分析和总结。     

钨合金球的制备与研究进展

基于不同领域对钨合金球性能指标的要求,总结并综述了制备钨合金球的材料体系、制备方法及性能检测方法等,对钨合金球的应用领域及今后研究发展方向进行了简单概述,以期为钨合金球的制备研究提供参考.     

Direct Digital Manufacturing Industry Ascendant

The paper introduces the origin of the word of Direct Digital Manufacturing and other forms of address, and the working principles of Direct Digital Manufacturing technology and major types of the technology, hard- ware and software development, use of materials, applications, market growth and its development prospects. Focused presentations of Direct Digital Manufacturing （additive manufacturing） compared to traditional mechani- cal manufacturing industry in the use of prices, processing speed, reliability and cost advantages and characteris- tics. Particularly the significant challenges and competitiveness of Direct Digital Manufacturing technology in the processing of any complexity created directly the number of objects, internal structure and channel function, as well as the shape of the chassis components and structure of the matching and optimization.     

井下电火花故障及预防措施

介绍SY矿近期发生的防爆电气故障,尤其是甩掉保护、违章作业,造成防爆开关烧毁等伤人事故,并对事故原因进行了详细分析。     

ERW焊管首检工艺流程对首检质量和效率的影响

ERW（高频电阻焊）焊管的生产特点要求其在批量生产前要进行工艺评定,俗称首检。如果首检质量控制不当,会导致批量降级管的产生。分析了宝山钢铁股份有限公司宝钢分公司钢管厂610 ERW机组原有首检工艺流程存在的不足,提出了改进首检工艺流程、制作常用钢级非标准试样和标准试样力学性能对比表、提高首检夏比冲击值等措施,使首检质量和效率显著提高,取得了良好的效果。