By measuring the variation of the P-and S-wave velocities of tight sandstone samples under water saturation,it was confirmed that with the decrease in water saturation,the P-wave velocity first decreased and then incr...By measuring the variation of the P-and S-wave velocities of tight sandstone samples under water saturation,it was confirmed that with the decrease in water saturation,the P-wave velocity first decreased and then increased.The variation in velocity was influenced by the sandstone’s porosity.The commonly used Gassmann equation based on fluid substitution theory was studied.Comparing the calculated results with the measured data,it was found that the Gassmann equation agreed well with the measured data at high water saturation,but it could not explain the bending phenomenon of P-wave velocity at low saturation.This indicated that these equations could not accurately describe the relationship between fluid content and rock acoustic velocity.The reasons for this phenomenon were discussed through Taylor’s expansion.The coefficients of the fitting formula were calculated and verified by fitting the measured acoustic velocity changes of the cores.The relationship between P-wave velocity and saturation was discussed,which provides experimental support for calculating saturation using seismic and acoustic logging data.展开更多
目的对国内外脊髓损伤神经源性肠道功能障碍相关指南进行质量评价和内容分析,为临床开展以证据为基础的脊髓损伤神经源性肠道功能障碍护理实践提供参考。方法系统检索BMJ Best Practice、国际指南协作网、美国国立指南文库、英国国家临...目的对国内外脊髓损伤神经源性肠道功能障碍相关指南进行质量评价和内容分析,为临床开展以证据为基础的脊髓损伤神经源性肠道功能障碍护理实践提供参考。方法系统检索BMJ Best Practice、国际指南协作网、美国国立指南文库、英国国家临床医学研究所、苏格兰校际指南网、安大略省注册护士协会、美国脊髓损伤学会、美国残疾退伍军人协会、医脉通临床指南库、PubMed、Web of Science、CINAHL、Cochrane Library、Ovid数据库、万方、中国知网、中华医学期刊全文数据库中的相关指南,采用AGREEⅡ对纳入的循证指南进行质量评价,采用JBI的专家共识评价标准对专家共识类指南进行质量评价,运用内容分析法整合指南的推荐意见。结果最终纳入10篇文献,其中6篇循证指南,4篇专家共识类指南。3篇循证指南的质量评价结果为A级,3篇结果为B级。10篇指南内容分析汇总为分类、护理目标、评估、基础肠道护理、药物护理、肠道灌洗、电和磁刺激、并发症预防、健康教育和护理记录10个主题27条推荐意见。结论本研究整合了脊髓损伤神经源性肠道功能障碍相关指南中护理相关内容,总结10个主题,内容丰富,整体质量较高,部分争议内容有待进一步研究。国内脊髓损伤神经源性肠道功能障碍护理指南欠缺,需组建多学科小组构建符合国内临床情境的护理指南。展开更多
合理的绩效考核方法能够引导医院行政管理人员行为,最大限度激发其积极性,而行政管理人员因其工作性质,工作量、工作难度难以量化及评估,故在绩效改革过程中存在很大难度。岗位价值评估(International Position Evaluation,IPE)是用于...合理的绩效考核方法能够引导医院行政管理人员行为,最大限度激发其积极性,而行政管理人员因其工作性质,工作量、工作难度难以量化及评估,故在绩效改革过程中存在很大难度。岗位价值评估(International Position Evaluation,IPE)是用于量化岗位价值的方法。以某公立医院为例,介绍基于IPE的行政管理人员绩效评价体系的实施情况,并探讨了实践中存在的难点及对策。展开更多
文摘By measuring the variation of the P-and S-wave velocities of tight sandstone samples under water saturation,it was confirmed that with the decrease in water saturation,the P-wave velocity first decreased and then increased.The variation in velocity was influenced by the sandstone’s porosity.The commonly used Gassmann equation based on fluid substitution theory was studied.Comparing the calculated results with the measured data,it was found that the Gassmann equation agreed well with the measured data at high water saturation,but it could not explain the bending phenomenon of P-wave velocity at low saturation.This indicated that these equations could not accurately describe the relationship between fluid content and rock acoustic velocity.The reasons for this phenomenon were discussed through Taylor’s expansion.The coefficients of the fitting formula were calculated and verified by fitting the measured acoustic velocity changes of the cores.The relationship between P-wave velocity and saturation was discussed,which provides experimental support for calculating saturation using seismic and acoustic logging data.
文摘目的对国内外脊髓损伤神经源性肠道功能障碍相关指南进行质量评价和内容分析,为临床开展以证据为基础的脊髓损伤神经源性肠道功能障碍护理实践提供参考。方法系统检索BMJ Best Practice、国际指南协作网、美国国立指南文库、英国国家临床医学研究所、苏格兰校际指南网、安大略省注册护士协会、美国脊髓损伤学会、美国残疾退伍军人协会、医脉通临床指南库、PubMed、Web of Science、CINAHL、Cochrane Library、Ovid数据库、万方、中国知网、中华医学期刊全文数据库中的相关指南,采用AGREEⅡ对纳入的循证指南进行质量评价,采用JBI的专家共识评价标准对专家共识类指南进行质量评价,运用内容分析法整合指南的推荐意见。结果最终纳入10篇文献,其中6篇循证指南,4篇专家共识类指南。3篇循证指南的质量评价结果为A级,3篇结果为B级。10篇指南内容分析汇总为分类、护理目标、评估、基础肠道护理、药物护理、肠道灌洗、电和磁刺激、并发症预防、健康教育和护理记录10个主题27条推荐意见。结论本研究整合了脊髓损伤神经源性肠道功能障碍相关指南中护理相关内容,总结10个主题,内容丰富,整体质量较高,部分争议内容有待进一步研究。国内脊髓损伤神经源性肠道功能障碍护理指南欠缺,需组建多学科小组构建符合国内临床情境的护理指南。
文摘合理的绩效考核方法能够引导医院行政管理人员行为,最大限度激发其积极性,而行政管理人员因其工作性质,工作量、工作难度难以量化及评估,故在绩效改革过程中存在很大难度。岗位价值评估(International Position Evaluation,IPE)是用于量化岗位价值的方法。以某公立医院为例,介绍基于IPE的行政管理人员绩效评价体系的实施情况,并探讨了实践中存在的难点及对策。
