目的探讨医学院校本科大学生的亚健康现状及其影响因素,旨在为提高大学生的健康水平提供依据。方法 2011年12月,采用一般情况调查表和亚健康状态评价标准问卷(suboptimal health status questionnaire-25,SHSQ-25)对南京中医药大学320...目的探讨医学院校本科大学生的亚健康现状及其影响因素,旨在为提高大学生的健康水平提供依据。方法 2011年12月,采用一般情况调查表和亚健康状态评价标准问卷(suboptimal health status questionnaire-25,SHSQ-25)对南京中医药大学320名本科大学生进行调查,并分析亚健康状况及其影响因素。结果本科大学生亚健康发生率为24.92%,临界状态者(25≤评分<35分)占32.36%。大学生亚健康影响因素有性别(P=0.012),入睡时间(P=0.016)和压力(P<0.01)。结论医学院校本科大学生亚健康发生率低于国内其他报道,但本科大学生的健康状况仍应该引起重视,学校管理者应根据亚健康发生的影响因素采取有针对性的措施。展开更多
AgVO_(3)/ZIF-8 composites with enhanced photocatalytic effect were prepared by the combination of AgVO_(3)and ZIF-8.X-ray diffraction(XRD),scanning electron microscopy(SEM),high-power transmission electron microscopy(...AgVO_(3)/ZIF-8 composites with enhanced photocatalytic effect were prepared by the combination of AgVO_(3)and ZIF-8.X-ray diffraction(XRD),scanning electron microscopy(SEM),high-power transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS),ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS),photoluminescence(PL)spectroscopy,electron spin resonance(ESR)spectroscopy,transient photocurrent and electrochemical impedance spectroscopy(EIS)were used to characterize binary composites.Tetracycline(TC)was used as a substrate to study the performance efficiency of the degradation of photocatalysts under light conditions,and the degradation effect of TC was also evaluated under different mass concentrations and ionic contents.In addition,we further investigated the photocatalytic mechanism of the binary composite material AgVO_(3)/ZIF-8 and identified the key active components responsible for the catalytic degradation of this new photocatalyst.The experimental results show that the degradation efficiency of 10%-AZ,prepared with a molar ratio of 10%AgVO_(3)and ZIF-8 to TC,was 75.0%.This indicates that the photocatalytic activity can be maintained even under a certain ionic content,making it a suitable photocatalyst for optimal use.In addition,the photocatalytic mechanism of binary composites was further studied by the active species trapping experiment.展开更多
目的研究中药挥发油透皮促渗苷类成分效果与对经皮水分散失量(Transepidermal water loss,TEWL)的相关性。方法采用HPLC法测定3种苷类成分(栀子苷、龙胆苦苷、芍药苷)的含量及油水分配系数,采用改良Franz扩散池法以离体SD大鼠腹部皮肤...目的研究中药挥发油透皮促渗苷类成分效果与对经皮水分散失量(Transepidermal water loss,TEWL)的相关性。方法采用HPLC法测定3种苷类成分(栀子苷、龙胆苦苷、芍药苷)的含量及油水分配系数,采用改良Franz扩散池法以离体SD大鼠腹部皮肤为透皮吸收屏障进行体外透皮实验,考察高良姜、干姜、薄荷、胡椒和吴茱萸5种中药挥发油对3种苷类成分的体外透皮促渗效果,采用经皮水分散失量评价5种中药挥发油对大鼠皮肤屏障功能的影响,通过相关性分析考察中药挥发油透皮促渗苷类成分效果与其对皮肤屏障功能影响之间的相关性。结果高良姜油、干姜油、薄荷油、胡椒油能促进3种苷类成分的透皮吸收,也能显著降低大鼠的皮肤屏障功能,相关性分析结果表明中药挥发油对苷类成分的透皮促渗效果与其对皮肤经皮水分散失量的影响显著相关。结论TEWL为中药挥发油透皮促渗剂的快速筛选提供了一种简便快捷的在体评价方法。展开更多
文摘目的探讨医学院校本科大学生的亚健康现状及其影响因素,旨在为提高大学生的健康水平提供依据。方法 2011年12月,采用一般情况调查表和亚健康状态评价标准问卷(suboptimal health status questionnaire-25,SHSQ-25)对南京中医药大学320名本科大学生进行调查,并分析亚健康状况及其影响因素。结果本科大学生亚健康发生率为24.92%,临界状态者(25≤评分<35分)占32.36%。大学生亚健康影响因素有性别(P=0.012),入睡时间(P=0.016)和压力(P<0.01)。结论医学院校本科大学生亚健康发生率低于国内其他报道,但本科大学生的健康状况仍应该引起重视,学校管理者应根据亚健康发生的影响因素采取有针对性的措施。
文摘AgVO_(3)/ZIF-8 composites with enhanced photocatalytic effect were prepared by the combination of AgVO_(3)and ZIF-8.X-ray diffraction(XRD),scanning electron microscopy(SEM),high-power transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS),ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS),photoluminescence(PL)spectroscopy,electron spin resonance(ESR)spectroscopy,transient photocurrent and electrochemical impedance spectroscopy(EIS)were used to characterize binary composites.Tetracycline(TC)was used as a substrate to study the performance efficiency of the degradation of photocatalysts under light conditions,and the degradation effect of TC was also evaluated under different mass concentrations and ionic contents.In addition,we further investigated the photocatalytic mechanism of the binary composite material AgVO_(3)/ZIF-8 and identified the key active components responsible for the catalytic degradation of this new photocatalyst.The experimental results show that the degradation efficiency of 10%-AZ,prepared with a molar ratio of 10%AgVO_(3)and ZIF-8 to TC,was 75.0%.This indicates that the photocatalytic activity can be maintained even under a certain ionic content,making it a suitable photocatalyst for optimal use.In addition,the photocatalytic mechanism of binary composites was further studied by the active species trapping experiment.
文摘目的研究中药挥发油透皮促渗苷类成分效果与对经皮水分散失量(Transepidermal water loss,TEWL)的相关性。方法采用HPLC法测定3种苷类成分(栀子苷、龙胆苦苷、芍药苷)的含量及油水分配系数,采用改良Franz扩散池法以离体SD大鼠腹部皮肤为透皮吸收屏障进行体外透皮实验,考察高良姜、干姜、薄荷、胡椒和吴茱萸5种中药挥发油对3种苷类成分的体外透皮促渗效果,采用经皮水分散失量评价5种中药挥发油对大鼠皮肤屏障功能的影响,通过相关性分析考察中药挥发油透皮促渗苷类成分效果与其对皮肤屏障功能影响之间的相关性。结果高良姜油、干姜油、薄荷油、胡椒油能促进3种苷类成分的透皮吸收,也能显著降低大鼠的皮肤屏障功能,相关性分析结果表明中药挥发油对苷类成分的透皮促渗效果与其对皮肤经皮水分散失量的影响显著相关。结论TEWL为中药挥发油透皮促渗剂的快速筛选提供了一种简便快捷的在体评价方法。
