An exploratory study on the effectiveness of social action as a tacticin community development projects in Hong Kong

published_or_final_versionSocial WorkMasterMaster of Social Wor

Political participation in Hong Kong: the politicization of social workers

published_or_final_versionPublic AdministrationMasterMaster of Social Science

胺基聚醇AP-1和有机硅抑制剂GWJ及其复合剂对水合物生成的影响

利用自制装置，模拟深水钻井中的温度和压力，考察不同含量的胺基聚醇AP-1、有机硅抑制剂GWJ和胺基聚醇AP-1与有机硅抑制剂GWJ的复合剂对钻井液中水合物生成的影响。实验结果表明，当胺基聚醇AP-1含量为0．5％（w）时促进水合物的生成；当胺基聚醇AP-1含量为1．0％（w）或2．0％（w）时则抑制水合物的生成，且随胺基聚醇AP-1含量的增加，其对水合物生成的抑制作用增强；当有机硅抑制剂GWJ含量为2．0％（w）时促进水合物的生成，水合物生成速率随有机硅抑制剂GWJ含量的增加而降低；在初始压力7MPa、初始温度4℃时，当添加胺基聚醇AP-1含量为2．0％（w）和有机硅抑制剂GWJ含量为2．0％（w）的复合剂时，水合物生成的诱导时间为580min，有效抑制了水合物的生成

Effects of Amino Polymeric Alcohol AP-1, Organic Silicon Inhibitor GWJ and Their Complex on the Hydrate Formation

The effects of amino polymeric alcohol AP-1 with different content, organic silicon inhibitor GWJ and their complex agents on the hydrate formation in drilling fluid were studied in a self-made experimental installation. The results showed that 0.5%（w） A

Experimental Study on Methane Hydrate Formation fromWater-based Drilling Fluid

The three phase equilibrium conditions of methane hydrate from water-based drilling fluid were measuredranging from 3oC to 13oC by isochoric pressure-search method. The methane hydrate formation from water-based drillingfluid was carried out under isocho

水基钻井液中天然气水合物形成的研究进展

依据水基钻井液中天然气水合物生成的相关研究,结合理论与实践,介绍了一些钻井液处理剂对水合物生成的影响,重点概述了水基钻井液对天然气水合物生成的抑制效应,并简要说明了水合物抑制剂在钻井液中应用的相关研究

塔里木河下游环境退化的因子分析

为了研究土地荒漠化及其影响因子,对塔里木河下游沿河道布设的39个样地,进行环境退化因子分析。通过数学变换,8个观测指标被转换为3个综合指标(水分指标、沙化指标、盐化指标)。根据本地区的实际,对3个综合指标进行环境解释。依据这3个主分量的贡献率,计算塔里木河下游39个样地的因子得分,并据此进行环境退化程度(荒漠化)的分类。从因子得分结果看,塔里木河下游地区呈明显的随距大西海子水库距离的增加荒漠化程度加重的特点,引起这一结果的主要原因,是水、盐条件逐渐恶化带来的植被衰败。从分类的结果看,与该地区的实际基本相符合。这说明因子分析的方法综合了多指标的综合影响,划分的结果更加客观