It is generally believed that exciplex is formed at the interface between a acceptor and a donor, it is not a new species, and it has a transit excited state. Based on the concept, we discussed the formation process o...It is generally believed that exciplex is formed at the interface between a acceptor and a donor, it is not a new species, and it has a transit excited state. Based on the concept, we discussed the formation process of exciplex in organic electroluminescent (OEL) device with rareearth complex and considered that exciplex is also formed in the mixinglayer and it′s formation is the result from the interaction of singlet state of ligand and the holetransport material. Therefore, exciplex emission and the central ions emission of rareearth complex is an energy competition process. Therefore, it was resonable to understand that elimination of exciplex emission means enhance of the central ion emission of the rareearth complex through adjusting molar ratio of the two molecules.展开更多
中国电科院根据IEEE标准对ABB UN 5000励磁系统的转子过励限制器和定子过流限制器提出了反时限功能与启动值无关的要求,对ABB公司UN 5000励磁系统的升级方案进行了分析.ABB公司通过升级ROM的方式,从底层逻辑修改限制器公式,并更改了对...中国电科院根据IEEE标准对ABB UN 5000励磁系统的转子过励限制器和定子过流限制器提出了反时限功能与启动值无关的要求,对ABB公司UN 5000励磁系统的升级方案进行了分析.ABB公司通过升级ROM的方式,从底层逻辑修改限制器公式,并更改了对应的参数定义及数值,通过解析公式及理论计算和静动态试验,验证了系统升级后满足了新的标准要求.展开更多
Decorin(DCN)is primarily found in the connective tissues of various parts of the body,including the lungs,kidneys,bone tissue,aorta,and tendons.It is an important component of the extracellular matrix(ECM)and belongs ...Decorin(DCN)is primarily found in the connective tissues of various parts of the body,including the lungs,kidneys,bone tissue,aorta,and tendons.It is an important component of the extracellular matrix(ECM)and belongs to the class I small leucine-rich proteoglycans family.DCN is increasingly attracting attention due to its significant role in tumors,fibrotic diseases,and the regulation of vascular formation.Moreover,its anti-tumor properties have positioned it as a promising biomarker in the fight against cancer.Numerous studies have confirmed that DCN can exert inhibitory effects in various solid tumors,particularly in oral squamous cell carcinoma(OSCC),by activating its downstream pathways through binding with the epidermal growth factor receptor(EGFR)and mesenchymal-epithelial transition(MET)receptor,or by stabilizing and enhancing the expression of the tumor suppressor gene p53 to mediate apoptosis in cancer cells that have undergone mutation.The occurrence of OSCC is a continuous and dynamic process,encompassing the transition from normal mucosa to oral potentially malignant disorders(OPMDs),and further progressing from OPMDs to the malignant transformation into OSCC.We have found that DCN may exhibit a bidirectional effect in the progression of oral mucosal carcinogenesis,showing a trend of initial elevation followed by a decline,which decreases with the differentiation of OSCC.In OPMDs,DCN exhibits high expression and may be associated with malignant transformation,possibly linked to the increased expression of P53 in OPMDs.In OSCC,the expression of DCN is reduced,which can impact OSCC angiogenesis,and inhibit tumor cell proliferation,migration,and invasion capabilities,serving as a potential marker for predicting adverse prognosis in OSCC patients.This article reviews the current research status of DCN,covering its molecular structure,properties,and involvement in the onset and progression of oral mucosal carcinogenesis.It elucidates DCN’s role in this process and aims to offer insights for future investigations into its mechanism of action in oral mucosal carcinogenesis and its potential application in the early diagnosis and treatment of OSCC.展开更多
随着环保要求的提高,相关挥发性有机物(VOCs)物料排放标准对机械设备密封的排放提出较高要求。文中对比国家标准和广东省地方标准有关VOCs物料排放标准,指出其对相关石油化工泵机械密封选型的影响。国内外对化学危险品分类法规、标准在...随着环保要求的提高,相关挥发性有机物(VOCs)物料排放标准对机械设备密封的排放提出较高要求。文中对比国家标准和广东省地方标准有关VOCs物料排放标准,指出其对相关石油化工泵机械密封选型的影响。国内外对化学危险品分类法规、标准在不断发展变化,化学危险品的危险分类及其危害属性对石油化工泵用机械密封的设计应用也产生较大影响。API 682—2014 Pumps—Shaft Sealing Systems for Centrifugal and Rotary Pumps第4版公布了一种基于材料安全数据表(MSDS)的机械密封选型方法,即按照相关危险化学品分类、含量及职业暴露接触限值等信息设计选用机械密封。文中通过调查、追踪国内外最新有关危险化学品分类的法规、标准,结合实际,按API标准新方法对一些实际应用中的机械密封选型进行了尝试,以进一步提高对相关危险化学品分类的认识,认清泵送介质的危害属性及其对泵机械密封选型的影响。通过上述分析与尝试,指出石油化工泵机械密封的设计选用需与时俱进,使机械密封设计更安全、更有益于环保和人类健康。展开更多
Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport ...Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport materials with high glass transition temperature ( t g),good film formation and film stability,excellent hole transporting ability.展开更多
文摘It is generally believed that exciplex is formed at the interface between a acceptor and a donor, it is not a new species, and it has a transit excited state. Based on the concept, we discussed the formation process of exciplex in organic electroluminescent (OEL) device with rareearth complex and considered that exciplex is also formed in the mixinglayer and it′s formation is the result from the interaction of singlet state of ligand and the holetransport material. Therefore, exciplex emission and the central ions emission of rareearth complex is an energy competition process. Therefore, it was resonable to understand that elimination of exciplex emission means enhance of the central ion emission of the rareearth complex through adjusting molar ratio of the two molecules.
文摘中国电科院根据IEEE标准对ABB UN 5000励磁系统的转子过励限制器和定子过流限制器提出了反时限功能与启动值无关的要求,对ABB公司UN 5000励磁系统的升级方案进行了分析.ABB公司通过升级ROM的方式,从底层逻辑修改限制器公式,并更改了对应的参数定义及数值,通过解析公式及理论计算和静动态试验,验证了系统升级后满足了新的标准要求.
基金the National Key Laboratory of Oral Disease Prevention and Treatment of Open Subject Project(SKLOD2024OF04)Luzhou City Science and Technology Plan Project(2023RCX171)Sichuan Province Medical Research Project Program(S23043)。
文摘Decorin(DCN)is primarily found in the connective tissues of various parts of the body,including the lungs,kidneys,bone tissue,aorta,and tendons.It is an important component of the extracellular matrix(ECM)and belongs to the class I small leucine-rich proteoglycans family.DCN is increasingly attracting attention due to its significant role in tumors,fibrotic diseases,and the regulation of vascular formation.Moreover,its anti-tumor properties have positioned it as a promising biomarker in the fight against cancer.Numerous studies have confirmed that DCN can exert inhibitory effects in various solid tumors,particularly in oral squamous cell carcinoma(OSCC),by activating its downstream pathways through binding with the epidermal growth factor receptor(EGFR)and mesenchymal-epithelial transition(MET)receptor,or by stabilizing and enhancing the expression of the tumor suppressor gene p53 to mediate apoptosis in cancer cells that have undergone mutation.The occurrence of OSCC is a continuous and dynamic process,encompassing the transition from normal mucosa to oral potentially malignant disorders(OPMDs),and further progressing from OPMDs to the malignant transformation into OSCC.We have found that DCN may exhibit a bidirectional effect in the progression of oral mucosal carcinogenesis,showing a trend of initial elevation followed by a decline,which decreases with the differentiation of OSCC.In OPMDs,DCN exhibits high expression and may be associated with malignant transformation,possibly linked to the increased expression of P53 in OPMDs.In OSCC,the expression of DCN is reduced,which can impact OSCC angiogenesis,and inhibit tumor cell proliferation,migration,and invasion capabilities,serving as a potential marker for predicting adverse prognosis in OSCC patients.This article reviews the current research status of DCN,covering its molecular structure,properties,and involvement in the onset and progression of oral mucosal carcinogenesis.It elucidates DCN’s role in this process and aims to offer insights for future investigations into its mechanism of action in oral mucosal carcinogenesis and its potential application in the early diagnosis and treatment of OSCC.
文摘随着环保要求的提高,相关挥发性有机物(VOCs)物料排放标准对机械设备密封的排放提出较高要求。文中对比国家标准和广东省地方标准有关VOCs物料排放标准,指出其对相关石油化工泵机械密封选型的影响。国内外对化学危险品分类法规、标准在不断发展变化,化学危险品的危险分类及其危害属性对石油化工泵用机械密封的设计应用也产生较大影响。API 682—2014 Pumps—Shaft Sealing Systems for Centrifugal and Rotary Pumps第4版公布了一种基于材料安全数据表(MSDS)的机械密封选型方法,即按照相关危险化学品分类、含量及职业暴露接触限值等信息设计选用机械密封。文中通过调查、追踪国内外最新有关危险化学品分类的法规、标准,结合实际,按API标准新方法对一些实际应用中的机械密封选型进行了尝试,以进一步提高对相关危险化学品分类的认识,认清泵送介质的危害属性及其对泵机械密封选型的影响。通过上述分析与尝试,指出石油化工泵机械密封的设计选用需与时俱进,使机械密封设计更安全、更有益于环保和人类健康。
文摘Two novel starburst compounds (star arylamines),4,4′,4″ tris(diphenylamino) triphenylamine (TDATA) and 4,4′,4″ tris[3 methyl (phenyl) amino] triphenylamine (MTDATA),were designed and synthesized as hole transport materials with high glass transition temperature ( t g),good film formation and film stability,excellent hole transporting ability.
