MP PFGun脉冲爆燃压裂技术在阿曼SSM-XX井的应用

简要叙述了MP PFGun技术工作原理、系统结构特点以及PropFrac脉冲压裂模拟器软件基本功能,并对SSM-XX井的模拟计算P-T曲线和井下压力仪实测曲线进行了对比。结果表明:SM-XX井采用MP PFGun电缆输送工艺安全,脉冲压裂持续时间长,且利用PropFrac模拟软件指导施工设计,取得了较好的应用效果。     

Recent progress on low-cost ceramic membrane for water and wastewater treatment

Great progress in the development of low-cost ceramic membranes from alternative materials have been achieved recently towards various application especially water and wastewater treatment. However, their significance has not been fully recognized and understood especially in term of their microstructural analysis such as formation of grain growth and microcracks. This review paper summarizes fabrication method, alternative materials, microstructure, wettability, mechanical properties and application of low-cost ceramic membrane. The fabrication method including slip casting, tape casting, extrusion, pressing method and phase inversion technique are described. Alternative materials used in low-cost ceramic membrane fabrication are discussed and categorized into clays, agricultural waste, industrial waste and animal bone waste. The mechanisms of morphology formation, microstructure and wettability properties are analysed. Modification strategies for the surface of low-cost ceramic membrane are discussed, and classified into modification for separation application, modification for photocatalytic application and modification for membrane distillation and membrane contactor system. Modification improves the membrane structure by changing the pore size, porosity and wettability properties of low-cost ceramic membranes. Mechanical properties of low-cost ceramic membranes are also discussed in detail towards several mechanism, like grain growth phenomenon and formation of microcracks which also considered as membrane defects. Grain growth phenomenon can be divided into normal and abnormal grain growth. Meanwhile, formation of microcracks could be occurred in single-phase polycrystalline ceramics that have anisotropic grains or biphasic polycrystalline grains. The application of low-cost ceramic membrane in seawater desalination, oily wastewater treatment, heavy metal adsorption, textile separation and photocatalytic application are reviewed. Finally, some possible opportunities and challenges for further development of low-cost ceramic membrane are pointed out.     

《针织休闲服装》行业标准解读

本文介绍了《针织休闲服装》标准的主要修订内容和依据,包括适用范围的修改、超出标准范围的号型标注方法的增加、纤维含量标注及要求的修改、起球和色牢度相关指标的调整,重点分析了洗液沾色程度试验方法和考核指标的设定思路,旨在帮助企业和检测部门正确理解和运用标准,为准确判定产品的质量提供参考。     

螺纹紧固件工程应用研究

螺纹紧固件在工业生产中应用广泛,螺距、旋合长度、拧紧力矩是正确选用螺纹紧固件、提高螺纹紧固件连接可靠性的关键参数。对螺纹紧固件的螺距、旋合长度进行了介绍,对拧紧力矩进行了计算,并对扳手的选用进行了分析。     

长距离定向钻进技术在巷道掘进超前探查中的应用研究

巷道掘进超前探查一般采用钻探方法的开展工作,常规回转钻进由于受钻进工艺等影响,存在钻孔施工长度短、影响正常掘进、施工精度较差等问题。而采用长距离掩护式定向钻进工艺开展超前探放水工作,可对掘进头600m范围内进行超前探查,钻孔施工长度较常规回转钻进孔长度增大3~4倍,在不影响掘进的前提下,可通过随钻测斜仪器实时对钻孔轨迹进行调整、监控,从而达到高精度、长距离对掘进前方进行超前探查,较常规超前探放水具有较大的优势[1]。     

创新创业背景下三维打印技术的应用

以智能家居系列产品中的无线遥控开关为例,介绍了在“大众创业、万众创新”背景下三维打印技术对产品设计和制造阶段的影响,分析了数模处理、切片、后处理等三维打印工艺,并对三维打印技术未来的发展进行了展望。     

垂直冲击试验机的研制

为满足简便检测塑料产品抗冲击强度的需求,研制了垂直冲击试验机。对垂直冲击试验机的结构进行了设计,基于力学原理进行了受力计算,并对工作原理与相对基准设定问题进行了分析。介绍了垂直冲击试验机的操作方法,并进行了规格校验。     

节能低排放型温拌沥青混合料在寒冷地区的应用前景

温拌沥青在使用的过程中可以节省20%~30%的燃料,而且也可以减少污染气体的排放,温拌沥青在使用的过程中拌和温度和摊铺温度都比热拌沥青有所降低,非常适合在寒冷地区的使用,可以缩短施工的时间,延长路面的使用寿命。而作为温拌沥青的上游原材料,辽河石化沥青又有着得天独厚的优势。介绍了温拌沥青的技术特点、温拌沥青的优良性能以及辽河石化沥青的特点等。     

微机原理与接口技术课程的实验教学改革

基于仰恩大学实验室新购DVCC32-JHP型微机原理与接口技术实验平台,本文探索了微机实验课程教学改革,提出改进措施,让学生充分进行面向实际应用的实验和设计研究,有助于提高微机实验课程的教学效果,达到育人的目的。     

绿色环保建筑材料发展及应用

随着经济的进步和社会的不断发展,人民的生活水平也在不断的提升,绿色环保的意识和对环保的要求也在不断内的提升。于是,随着技术的不断进步,绿色环保建筑材料也应运而生并得以广泛的应用。绿色环保建筑材料相比较传统的建筑材料优势非常的大,比如可以提高资源的利用效率、保护生态环境、减少污染、为人们打造一个安全舒适的生活环境。所以绿色环保材料具有非常广阔的发展空间。基于此,本文对绿色环保材料的内涵、发展状况以及应用状况进行了分析。