目的制定声带器质性发声障碍患者围手术期嗓音康复审查指标,分析障碍因素,为证据的临床转化提供依据。方法以知识转化模式(knowledge to action framework,KTA)为理论指导,按照知识应用步骤:确定问题,组建循证小组和专家团队;将知识引...目的制定声带器质性发声障碍患者围手术期嗓音康复审查指标,分析障碍因素,为证据的临床转化提供依据。方法以知识转化模式(knowledge to action framework,KTA)为理论指导,按照知识应用步骤:确定问题,组建循证小组和专家团队;将知识引入临床情景,综合函询和讨论制定审查指标及审查方法;根据基线审查结果基于渥太华研究应用模型(Ottawa Model of Research Use,OMRU),经头脑风暴法分析证据引入临床的障碍因素。结果共纳入15条最佳证据,制定13条审查指标及其方法;归纳分析出3方面的8条障碍因素,即基于证据变革方面2条、潜在采纳者3条及实践环境3条。结论本研究审查指标制定具有科学性和内容可行性,障碍因素评估具有科学性和内容新颖性,研究方法有借鉴作用,研究内容为证据转化提供依据。展开更多
As a frequently-used roadbed filler,soil-rock mixture is often in the environment of freeze-thaw cycles and different confining pressures.In order to study the freeze-thaw damage mechanism of elastic modulus of soil-r...As a frequently-used roadbed filler,soil-rock mixture is often in the environment of freeze-thaw cycles and different confining pressures.In order to study the freeze-thaw damage mechanism of elastic modulus of soil-rock mixtures at different confining pressures,the concept of meso-interfacial freeze-thaw damage coefficient is put forward and the meso-interfacial damage phenomenon of soil-rock mixtures caused by the freeze-thaw cycle environment is concerned;a double-inclusion embedded model for elastic modulus of soil-rock mixtures in freezing-thawing cycle is proposed.A large triaxial test was performed and the influences of confining pressure and experimental factors on elastic modulus of soil-rock mixtures were obtained,and then the accuracy of the double-inclusion embedded model to predict the elastic modulus of soil-rock mixtures in freezing-thawing cycle is verified.Experiment results showed that as to soil-rock mixtures,with the increase of confining pressure,the elastic modulus increases approximately linearly.The most crucial factors to affect the elastic modulus are rock content and compaction degree at the same confining pressure;the elastic modulus increases with the increase of rock content and compactness;as the number of freeze-thaw cycles increases,the freeze-thaw damage coefficient of meso-structural interface and the elastic modulus decrease.展开更多
1 Introduction Centipeda minima(Compositae) is an annual herbaceous plant found in moist places throughout the plains mainly in the southern regions of the People's Republic of China, Eastern tropical Asia, Austra...1 Introduction Centipeda minima(Compositae) is an annual herbaceous plant found in moist places throughout the plains mainly in the southern regions of the People's Republic of China, Eastern tropical Asia, Australia and the Pacific Islands. It is a commonly used Chinese folk medicine for colds, whooping cough, nasal allergy, malaria and asthma. A number of sesquiterpene lactones, flavonoids and triterpenes have previously been isolated from C. minima. During our study on searching for biological active components from this plant,展开更多
文摘目的制定声带器质性发声障碍患者围手术期嗓音康复审查指标,分析障碍因素,为证据的临床转化提供依据。方法以知识转化模式(knowledge to action framework,KTA)为理论指导,按照知识应用步骤:确定问题,组建循证小组和专家团队;将知识引入临床情景,综合函询和讨论制定审查指标及审查方法;根据基线审查结果基于渥太华研究应用模型(Ottawa Model of Research Use,OMRU),经头脑风暴法分析证据引入临床的障碍因素。结果共纳入15条最佳证据,制定13条审查指标及其方法;归纳分析出3方面的8条障碍因素,即基于证据变革方面2条、潜在采纳者3条及实践环境3条。结论本研究审查指标制定具有科学性和内容可行性,障碍因素评估具有科学性和内容新颖性,研究方法有借鉴作用,研究内容为证据转化提供依据。
基金Project(50908234)supported by the National Natural Science Foundation of China
文摘As a frequently-used roadbed filler,soil-rock mixture is often in the environment of freeze-thaw cycles and different confining pressures.In order to study the freeze-thaw damage mechanism of elastic modulus of soil-rock mixtures at different confining pressures,the concept of meso-interfacial freeze-thaw damage coefficient is put forward and the meso-interfacial damage phenomenon of soil-rock mixtures caused by the freeze-thaw cycle environment is concerned;a double-inclusion embedded model for elastic modulus of soil-rock mixtures in freezing-thawing cycle is proposed.A large triaxial test was performed and the influences of confining pressure and experimental factors on elastic modulus of soil-rock mixtures were obtained,and then the accuracy of the double-inclusion embedded model to predict the elastic modulus of soil-rock mixtures in freezing-thawing cycle is verified.Experiment results showed that as to soil-rock mixtures,with the increase of confining pressure,the elastic modulus increases approximately linearly.The most crucial factors to affect the elastic modulus are rock content and compaction degree at the same confining pressure;the elastic modulus increases with the increase of rock content and compactness;as the number of freeze-thaw cycles increases,the freeze-thaw damage coefficient of meso-structural interface and the elastic modulus decrease.
基金Supported by the Natural Science Foundation of Tianjin, China(No.07JCZDJC05400).
文摘1 Introduction Centipeda minima(Compositae) is an annual herbaceous plant found in moist places throughout the plains mainly in the southern regions of the People's Republic of China, Eastern tropical Asia, Australia and the Pacific Islands. It is a commonly used Chinese folk medicine for colds, whooping cough, nasal allergy, malaria and asthma. A number of sesquiterpene lactones, flavonoids and triterpenes have previously been isolated from C. minima. During our study on searching for biological active components from this plant,