The rare earth complex Eu(TTA) 3 was successfully encapsulated into MCM 41 mesoporous molecular sieve by the addition of the complex into the sol gel mixture for the synthesis of MCM 41 mesoporous material under m...The rare earth complex Eu(TTA) 3 was successfully encapsulated into MCM 41 mesoporous molecular sieve by the addition of the complex into the sol gel mixture for the synthesis of MCM 41 mesoporous material under microwave radiation. The as synthesized MCM 41 hosted Eu(TTA) 3 mesophase was confirmed to possess hexagonally ordered mesostructure and a uniform crystal size of about 30 nm with XRD and HRTEM techniques. Moreover, the IR spectrum, photoluminescence effect and fluorescence lifetime of the Eu(TTA) 3/MCM 41 hybrid were also studied. An increase in Stokes' shift and no change in luminescence lifetime were observed to the resultant mesophase in comparison with Eu(TTA) 3 in ethanol solution.展开更多
MoO3/MCM-49 has been synthesized under the special condition and it shows a high activity and selectivity for nonoxidative aromatization of methane with a long lifetime and extreme capacity of anti-coking. MoO3/MCM-49...MoO3/MCM-49 has been synthesized under the special condition and it shows a high activity and selectivity for nonoxidative aromatization of methane with a long lifetime and extreme capacity of anti-coking. MoO3/MCM-49 is considered as a very promising catalyst for the title reaction.展开更多
目的:分析微小染色体维持蛋白3(minichromosome maintenance protein 3,MCM3)在脑胶质瘤中的表达情况、临床意义和可能参与的生物学过程,并探究其与胶质瘤免疫的关系。方法:在线检索GEPIA和Oncomine数据库获得MCM3在胶质瘤组织中的表达...目的:分析微小染色体维持蛋白3(minichromosome maintenance protein 3,MCM3)在脑胶质瘤中的表达情况、临床意义和可能参与的生物学过程,并探究其与胶质瘤免疫的关系。方法:在线检索GEPIA和Oncomine数据库获得MCM3在胶质瘤组织中的表达情况,利用CGGA数据库在线分析MCM3表达和胶质瘤临床病理特征的关系。同时收集2019年1月到2020年3月在山西省人民医院神经外科接受手术治疗的24例胶质瘤患者的肿瘤标本和8例非肿瘤对照标本,采用免疫组化SP法检测MCM3的表达,对生物信息学分析结果进行验证。在TCGA和CGGA数据库中利用Kaplan-Meier生存曲线评价MCM3对胶质瘤预后的作用。通过Linkedomic数据库、STRING数据库和Cytoscape软件获得与MCM3表达显著相关的基因。使用DAVID数据库对MCM3及其显著相关基因进行GO和KEGG分析,探究基因功能。最后在TIMER数据库中探究MCM3表达和胶质瘤免疫浸润的关系。结果:综合生物信息学与临床数据分析显示,MCM3在胶质瘤组织中相对正常组织呈高表达(P=0.024),其表达量随着病理级别逐渐升高(P=0.001)。生存分析显示,MCM3高表达与胶质瘤不良预后有关(P<0.05)。GO和KEGG分析显示,MCM3及其显著相关基因主要富集于细胞周期、DNA复制和调节DNA损伤修复等方面。TIMER数据库分析结果显示,在胶质瘤队列中,MCM3与多种免疫浸润细胞具有相关性(P<0.05)。结论:MCM3在胶质瘤中高表达且与不良预后有关,其可能与胶质瘤细胞的细胞周期、DNA复制、调节DNA损伤修复和免疫微环境有关。MCM3能促进胶质瘤的进展,可作为胶质瘤患者预后判断指标和潜在的治疗靶点。展开更多
文摘The rare earth complex Eu(TTA) 3 was successfully encapsulated into MCM 41 mesoporous molecular sieve by the addition of the complex into the sol gel mixture for the synthesis of MCM 41 mesoporous material under microwave radiation. The as synthesized MCM 41 hosted Eu(TTA) 3 mesophase was confirmed to possess hexagonally ordered mesostructure and a uniform crystal size of about 30 nm with XRD and HRTEM techniques. Moreover, the IR spectrum, photoluminescence effect and fluorescence lifetime of the Eu(TTA) 3/MCM 41 hybrid were also studied. An increase in Stokes' shift and no change in luminescence lifetime were observed to the resultant mesophase in comparison with Eu(TTA) 3 in ethanol solution.
文摘MoO3/MCM-49 has been synthesized under the special condition and it shows a high activity and selectivity for nonoxidative aromatization of methane with a long lifetime and extreme capacity of anti-coking. MoO3/MCM-49 is considered as a very promising catalyst for the title reaction.
文摘目的:分析微小染色体维持蛋白3(minichromosome maintenance protein 3,MCM3)在脑胶质瘤中的表达情况、临床意义和可能参与的生物学过程,并探究其与胶质瘤免疫的关系。方法:在线检索GEPIA和Oncomine数据库获得MCM3在胶质瘤组织中的表达情况,利用CGGA数据库在线分析MCM3表达和胶质瘤临床病理特征的关系。同时收集2019年1月到2020年3月在山西省人民医院神经外科接受手术治疗的24例胶质瘤患者的肿瘤标本和8例非肿瘤对照标本,采用免疫组化SP法检测MCM3的表达,对生物信息学分析结果进行验证。在TCGA和CGGA数据库中利用Kaplan-Meier生存曲线评价MCM3对胶质瘤预后的作用。通过Linkedomic数据库、STRING数据库和Cytoscape软件获得与MCM3表达显著相关的基因。使用DAVID数据库对MCM3及其显著相关基因进行GO和KEGG分析,探究基因功能。最后在TIMER数据库中探究MCM3表达和胶质瘤免疫浸润的关系。结果:综合生物信息学与临床数据分析显示,MCM3在胶质瘤组织中相对正常组织呈高表达(P=0.024),其表达量随着病理级别逐渐升高(P=0.001)。生存分析显示,MCM3高表达与胶质瘤不良预后有关(P<0.05)。GO和KEGG分析显示,MCM3及其显著相关基因主要富集于细胞周期、DNA复制和调节DNA损伤修复等方面。TIMER数据库分析结果显示,在胶质瘤队列中,MCM3与多种免疫浸润细胞具有相关性(P<0.05)。结论:MCM3在胶质瘤中高表达且与不良预后有关,其可能与胶质瘤细胞的细胞周期、DNA复制、调节DNA损伤修复和免疫微环境有关。MCM3能促进胶质瘤的进展,可作为胶质瘤患者预后判断指标和潜在的治疗靶点。
