Objective:To discuss the main active components and potential mechanisms of moist burn ointment in the treat-ment of diabetic ulcer were discussed by network pharmacology and molecular docking technology.Methods:Based...Objective:To discuss the main active components and potential mechanisms of moist burn ointment in the treat-ment of diabetic ulcer were discussed by network pharmacology and molecular docking technology.Methods:Based on the TC-MSP database,the main active components and targets of MEBO were screened.The targets related to diabetic ulcers were searched from GeneCards,OMIM,PharmGkb,TTD,and DrugBank databases.The STRING 11.5 database was used to con-struct a protein-protein interaction(PPI)network to screen the core targets.The'drug-target-disease'network diagram was made in Cytoscape 3.8.2 software to screen the core active components.GO enrichment analysis and KEGG pathway enrichment analysis were performed using R language software.Finally,molecular docking was used to preliminarily verify the screening results.Results:A total of 37 active components of MEBO were screened to map 100 targets,5527 targets for diabetic ulcer dis-ease,and 77 intersection targets.PPI network topology analysis suggested that TP53,TNF,HSP90AA1 and other targets were key targets;the network diagram of ‘drug-target-disease’showed that acacetin,wogonin,quercetin,and rutaecarpine were the core active ingredients.GO function analysis mainly involved angiogenesis,ion transport,diameter regulation,cytokine receptor binding,and other processes.KEGG enrichment analysis mainly included PI3K-Akt,AGE-RAGE,and other signaling pathways.Molecular docking showed that the core active ingredients and key targets had good docking activity.Conclusion:The treatment of diabetic ulcer with MEBO is the result of multi-component,multi-target,and synergistic regulation,which provides a theoretical basis for the clinical application of MEBO and the treatment of diabetic ulcer.展开更多
为能准确建立潮湿甘蔗复合肥的离散元模型,合理设置仿真参数,提高肥料颗粒动力学仿真结果的准确性,以休止角为响应值,对不同含水率的甘蔗复合肥进行试验研究。通过卸料仓法建立含水率与休止角的三元回归方程,决定系数为0.99;基于Hertz-M...为能准确建立潮湿甘蔗复合肥的离散元模型,合理设置仿真参数,提高肥料颗粒动力学仿真结果的准确性,以休止角为响应值,对不同含水率的甘蔗复合肥进行试验研究。通过卸料仓法建立含水率与休止角的三元回归方程,决定系数为0.99;基于Hertz-Mindlin with JKR粘结模型,通过Plackett-Burman试验、爬坡试验和Box-Behnken试验从9个初始参数筛选出JKR表面能、甘蔗复合肥剪切模量、甘蔗复合肥与不锈钢静摩擦系数、甘蔗复合肥间静摩擦系数、甘蔗复合肥间恢复系数5项显著性参数,并建立休止角—离散元参数模型,模型P值小于0.01,变异系数为6.35%;最后,通过对不同含水率下的最佳参数组合进行仿真休止角试验,仿真结果与物理休止角试验的相对误差小于7.66%,验证不同含水率的甘蔗复合肥参数标定结果和研究方法是合理可靠的。研究结果可为基于离散元法的甘蔗施肥机械动力学仿真研究提供参考。展开更多
基于2010-2021年黑龙江省9部C波段多普勒雷达观测和常规资料,结合欧洲中期天气预报中心(European Center for Medium-RangeWeather Forecasts,ECMWF)0.25°×0.25°的1 h间隔的ERA5再分析资料,统计分析了黑龙江省温带气旋...基于2010-2021年黑龙江省9部C波段多普勒雷达观测和常规资料,结合欧洲中期天气预报中心(European Center for Medium-RangeWeather Forecasts,ECMWF)0.25°×0.25°的1 h间隔的ERA5再分析资料,统计分析了黑龙江省温带气旋暴雪过程中尺度降水带的类型和活动特征,基于典型个例对比分析了两种主要中尺度降水带的环境场异同。结果表明:(1)中尺度降水带主要分为单带状、多带状、短暂带状和非带状;中尺度降水带主要分布在黑龙江南部和东北部,位于地面气旋的西北和东北象限,距离气旋中心900 km范围内,且主要发生在气旋的锢囚阶段;运动方式主要是横向平移与混合。(2)不同类型中尺度降水带降水强度的差异可以很好地从物理量的垂直廓线上体现出来,单带状低层比湿最大,低层锋生最强,造成的降水最强;而非带状低层锋生弱于单带状,最强比湿在800hPa附近,降水范围大,强度弱于单带状。(3)个例分析表明,单带状和多带状中尺度降水带均位于850hPa强暖平流的北侧和地面气旋的东北象限、处于弱的湿对称稳定或湿对称不稳定环境中,中尺度降水带的走向与锋生区平行。不同之处为单带状的形成伴随着低层低涡和地面气旋的快速发展和移动,变形场导致强锋生,上升运动集中在小范围,而多带状低层低涡和地面气旋少动、强度变化不大,变形场较弱,锋生较为浅薄,但高空辐散和低层暖平流更强,造成的上升运动范围更大,出现多个上升运动中心,对应多个小带。展开更多
基金National Natural Science Foundation Project (No.81774327)Guangxi Graduate Education Innovation Program Project (No.YCSW2023496)+1 种基金The"139"Plan for Senior and Secondary Backbone Talents in Guangxi Medicine (No.Gui Wei Ke Jiao Fa[2018]No.22)Graduate Innovation Program Project of Youjiang Ethnic Medical College (No.YXCXJH2022004)。
文摘Objective:To discuss the main active components and potential mechanisms of moist burn ointment in the treat-ment of diabetic ulcer were discussed by network pharmacology and molecular docking technology.Methods:Based on the TC-MSP database,the main active components and targets of MEBO were screened.The targets related to diabetic ulcers were searched from GeneCards,OMIM,PharmGkb,TTD,and DrugBank databases.The STRING 11.5 database was used to con-struct a protein-protein interaction(PPI)network to screen the core targets.The'drug-target-disease'network diagram was made in Cytoscape 3.8.2 software to screen the core active components.GO enrichment analysis and KEGG pathway enrichment analysis were performed using R language software.Finally,molecular docking was used to preliminarily verify the screening results.Results:A total of 37 active components of MEBO were screened to map 100 targets,5527 targets for diabetic ulcer dis-ease,and 77 intersection targets.PPI network topology analysis suggested that TP53,TNF,HSP90AA1 and other targets were key targets;the network diagram of ‘drug-target-disease’showed that acacetin,wogonin,quercetin,and rutaecarpine were the core active ingredients.GO function analysis mainly involved angiogenesis,ion transport,diameter regulation,cytokine receptor binding,and other processes.KEGG enrichment analysis mainly included PI3K-Akt,AGE-RAGE,and other signaling pathways.Molecular docking showed that the core active ingredients and key targets had good docking activity.Conclusion:The treatment of diabetic ulcer with MEBO is the result of multi-component,multi-target,and synergistic regulation,which provides a theoretical basis for the clinical application of MEBO and the treatment of diabetic ulcer.
文摘为能准确建立潮湿甘蔗复合肥的离散元模型,合理设置仿真参数,提高肥料颗粒动力学仿真结果的准确性,以休止角为响应值,对不同含水率的甘蔗复合肥进行试验研究。通过卸料仓法建立含水率与休止角的三元回归方程,决定系数为0.99;基于Hertz-Mindlin with JKR粘结模型,通过Plackett-Burman试验、爬坡试验和Box-Behnken试验从9个初始参数筛选出JKR表面能、甘蔗复合肥剪切模量、甘蔗复合肥与不锈钢静摩擦系数、甘蔗复合肥间静摩擦系数、甘蔗复合肥间恢复系数5项显著性参数,并建立休止角—离散元参数模型,模型P值小于0.01,变异系数为6.35%;最后,通过对不同含水率下的最佳参数组合进行仿真休止角试验,仿真结果与物理休止角试验的相对误差小于7.66%,验证不同含水率的甘蔗复合肥参数标定结果和研究方法是合理可靠的。研究结果可为基于离散元法的甘蔗施肥机械动力学仿真研究提供参考。
文摘基于2010-2021年黑龙江省9部C波段多普勒雷达观测和常规资料,结合欧洲中期天气预报中心(European Center for Medium-RangeWeather Forecasts,ECMWF)0.25°×0.25°的1 h间隔的ERA5再分析资料,统计分析了黑龙江省温带气旋暴雪过程中尺度降水带的类型和活动特征,基于典型个例对比分析了两种主要中尺度降水带的环境场异同。结果表明:(1)中尺度降水带主要分为单带状、多带状、短暂带状和非带状;中尺度降水带主要分布在黑龙江南部和东北部,位于地面气旋的西北和东北象限,距离气旋中心900 km范围内,且主要发生在气旋的锢囚阶段;运动方式主要是横向平移与混合。(2)不同类型中尺度降水带降水强度的差异可以很好地从物理量的垂直廓线上体现出来,单带状低层比湿最大,低层锋生最强,造成的降水最强;而非带状低层锋生弱于单带状,最强比湿在800hPa附近,降水范围大,强度弱于单带状。(3)个例分析表明,单带状和多带状中尺度降水带均位于850hPa强暖平流的北侧和地面气旋的东北象限、处于弱的湿对称稳定或湿对称不稳定环境中,中尺度降水带的走向与锋生区平行。不同之处为单带状的形成伴随着低层低涡和地面气旋的快速发展和移动,变形场导致强锋生,上升运动集中在小范围,而多带状低层低涡和地面气旋少动、强度变化不大,变形场较弱,锋生较为浅薄,但高空辐散和低层暖平流更强,造成的上升运动范围更大,出现多个上升运动中心,对应多个小带。
