东昆仑埃坑地区磷灰石裂变径迹年代学及构造意义

东昆仑位于青藏高原北部,埃坑地区处在东昆仑昆中和昆南断裂带之间。通过对该区域5个磷灰石样品分析,获得其裂变径迹年龄分别为（99±10）、（103±9）、（80±6）、（98±6）、（65±5） Ma。埃坑地区热历史可分为3个阶段：第1阶段（160~58 Ma）持续隆升,对应羌塘地块与拉萨地块向欧亚板块的拼贴作用;第2阶段（58~35 Ma）快速隆升,印度板块与欧亚板块碰撞导致埃坑强烈隆起;第3阶段（35 Ma至今）,构造活动较弱,未受青藏高原新近纪以来热事件影响。该地区5个样品的隆升量分别为3374、3283、3230、3157、3278 m,平均隆升量为3264 m,平均隆升速率为0.038 mm/a。     

Molecular dynamics investigation on the morphology of HNIW affected by the growth condition

The crystal morphology of Hexanitrohexaazaisowurtzitane (HNIW) in vacuum and ethyl acetate was investigated by attachment energy (AE) model through molecular dynamics (MD). The simulated solvent-affected outcome agrees well with the experimental crystal habit cultivated from ethyl acetate. The influence of model size on the modified AE was discussed, and a reasonable model size was obtained. The model size can be broadened to calculate the morphology of other compounds. The radial distribution function (RDF) analyses and diffusion coefficient analyses were performed to explore the adsorption and diffusion behaviors of ethyl acetate molecules on HNIW surfaces. The simulation results can provide some guidance for the further crystallization process of HNIW.     

驱油剂对中间层原油乳状液稳定性的影响

考察了孤岛油田中间层原油和外输原油的稳定性差异以及驱油剂对原油乳状液稳定性的影响.对于同一种破乳剂TA1031,在相同的脱水条件下,外输原油与中间层原油的最终脱水率分别为95.48％和78.40％,加入二元复合驱之后,脱水率分别为83.33％和70.30％.随着驱油剂浓度的增加,zeta电位的负值越来越大,乳状液稳定性...     

界面性质表征二元驱驱油剂对采出液稳定性的影响

UOP Separex Flux+是现有的Separex膜系统中膜元件的替代。Separex Flux+可增加污染物的去除,如酸性气和水。与现有技术相比,其设计可增加天然气加工能力,可使生产者获取更高的效益和降低成本。除了增加系统被加工的气体量外,与现有的膜产品相比,该膜元件每单位膜面积可去除更多的二氧化碳。这有助于使下游处理单元脱瓶颈制约,对     

水平井分段压裂工艺发展现状

水平井分段压裂可以有效降低地层中油气的渗流阻力,提高单井产量,实现低渗致密储层中油气的高效开发。在调研国内外水平井分段压裂改造工艺技术的基础上,重点阐述了国内外水平井技术发展概况以及水平井分段压裂工艺,并简要概括了水平井压裂存在的主要问题以及水平井压裂技术发展趋势,为低渗致密油气藏的改造提供了参考。     

Actor networks and the construction of applicable knowledge: the case of the Timbre Brownfield Prioritization Tool

This article deals with experiences acquired during the process of developing the Timbre Brownfield Prioritization Tool (TBPT). Developing a decision support tool that takes into account the expectations and experiences of its potential users is similar to creating applicable knowledge by the joint action of scientists and heterogeneous actors. Actor network theory is used to explore the construction of this form of applicable knowledge as a process of actor network creation. Following the French sociologist Callon, networks are seen to be initiated and carried out by a group of scientists (tool developers) via four moments of translation, called problematization, interessement, enrolment and mobilization. Each step in the construction of the TBPT—from the initial research question to the final model—can be linked in retrospect to changing configurations of actor networks. Based on the experiences of the tool developers in the Czech Republic, Poland, Germany and Romania, we illustrate how these configurations varied across space and time. This contribution emphasizes the ability to correlate gains in knowledge with the more visible changes in the scope of actor networks in order to highlight achievements but also limitations in acquiring applicable knowledge.     

浅析北京郊区公路绿化的现状与发展

以城、郊为界将北京公路绿化状况分为两部分,并进行了分析比较,从而找出两者现状差异,并根据效区公路绿化中的不足,从提高认识、加大投入、合理设计、科学养护4个方面找到解决问题的方法。     

超临界流体萃取原理及应用

本文论述了超临界流体的性质、超临界流体萃取法的分类,以及超临界流体萃取工艺在食品、医药、化学、化妆品香料等工业领域中的应用,并阐述了超临界流体萃取工艺中存在的不足,同时对今后的发展方向进行了展望.     

火电厂循环冷却水系统防腐技术试验与应用

针对火力发电厂循环冷却水系统溶解氧腐蚀、冲刷腐蚀及电化学腐蚀进行了分析,通过添加特效缓蚀剂使金属表面形成牢固、均匀、致密的保护膜层,使金属同循环水介质隔离而起到保护.达到了"GB50050-95"标准中铜及铜合金腐蚀速率宜小于0.005 m/a的要求,现场应用效果良好.     

火电厂循环冷却水系统防腐技术试验与应用

针对火力发电厂循环冷却水系统溶解氧腐蚀、冲刷腐蚀及电化学腐蚀进行了分析,通过添加特效缓蚀剂使金属表面形成牢固、均匀、致密的保护膜层,使金属同循环水介质隔离而起到保护。达到了“GB50050—95”标准中铜及铜合金腐蚀速率宜小于0.005m/a的要求,现场应用效果良好。