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Auxiliary ligand-induced assembly of atomically precise silver clusters

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Science china Chemistry 2024年

作者： Yeqin Feng Xuemeng Jing Fangyu Fu Mengyun Zhao Manzhou chi Hongjin Lü Guoyu Yang MOE Key Laboratory of Cluster Science Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical Engineering Beijing Institute of Technology

Establishing the correlation between inter-cluster assembly and auxiliary ligands at the atomic level is crucial for the development of metal cluster *** this work,we report the successful preparation and characterization of three Ag clusters,discrete 0-D Ag51S6Cl3（iPrS）21（tso）15CH3CN(0-D Ag51,iPrS-=isopropanethiolate,tso-=toluenesulfonate),1-D {Ag38S4（iPrS）18（PhCOO）12}_n(1-D Ag38,PHCOO-=benzoate),and 2-D {Ag20（SO4）Cl2（iPrS）10（NO3）6}_n(2-D Ag20),using a delicate auxiliary-ligand-induced *** analyses reveal that the types of auxiliary ligands can readily affect the structure and dimensionality of resulting Ag *** addition of different surface auxiliary ligands from tso-to PhCOO-and then to NO3-leads to the formation of 0-D Ag51to 1-D Ag38and then to 2-D Ag20clusters under otherwise identical reaction conditions,*** resulting Ag clusters exhibited structure-related optical/luminescence properties and distinct bathochromic shifts as revealed by the temperature-dependent luminescence and single-crystal X-ray diffraction studies.

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民族交往交流交融视野下藏族和回族族际通婚研究--基于甘肃夏河县的个案调查

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西藏艺术研究 2024年第2期 120-127页

作者：旦正草西藏大学中华民族共同体研究院

本文从民族交往交流交融的视角,重点探讨了夏河地区族际通婚的社会现象。族际通婚作为衡量民族交融的一个重要维度,具有窥探民族关系和促进中华民族共同体建设的重要价值。本文主要通过文献资料和实地调查资料,分析夏河藏族和回族的通... 详细信息

本文从民族交往交流交融的视角,重点探讨了夏河地区族际通婚的社会现象。族际通婚作为衡量民族交融的一个重要维度,具有窥探民族关系和促进中华民族共同体建设的重要价值。本文主要通过文献资料和实地调查资料,分析夏河藏族和回族的通婚率、族际通婚性别比例等现状及影响藏、回族际通婚的个人和族群层面的因素。

关键词：藏族回族族际通婚夏河县

教材与词典编译经验之谈——访汉藏翻译家普毛端主先生

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青海民族大学学报（藏文版） 2024年第2期 16-32页

作者：多杰措仁增青海民族大学藏学院青海西宁810007

普毛端主先生从事民族教材和词典的编译工作近四十年,先后编译和审译了中小学语文、数学、美术、音乐、历史、生物、地理、化学、信息技术等教材、教辅读物近两千本,及《数学》《物理》《化学》《计算机》《生物》《地理》汉藏英对照自... 详细信息

普毛端主先生从事民族教材和词典的编译工作近四十年,先后编译和审译了中小学语文、数学、美术、音乐、历史、生物、地理、化学、信息技术等教材、教辅读物近两千本,及《数学》《物理》《化学》《计算机》《生物》《地理》汉藏英对照自然科学名词术语六部词典,为民族师生提供了易教、易学、易懂的藏文教材和实用便捷的工具书,成为当代民族教材翻译的重要带头人。此次访谈,重点围绕普毛端主先生的翻译经历,讲述了青海民族教材编译处和藏青川甘滇五省区教育协作领导小组办公室从藏族教育的现状和实际出发,编译和出版的在内容上能充分体现思想性、科学性、实践性、民族性和地方性的大量藏文教材,其编译教材的使用范围基本覆盖了五省区,极大程度上满足了藏族中小学的教材需求,并初步实现了藏文教材建设从单一学科到多学科的突破。较详细地讲述了教材和词典的翻译原则和翻译方法,译文的质量标准,以及所译教材的语言规范、用词统一和教材审查的原则等,并介绍了汉藏英对照自然科学名词术语六部词典的结构、特点和价值,使教育者和受教育者深刻认识教材和词典编译的重要性,同时也为汉藏翻译工作者带来新的启示。

关键词：教材词典编译审查原则

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基于预训练的藏医药实体关系抽取

中文信息学报 2024年第8期38卷 76-83页

作者：周青拥措拉毛东只尼玛扎西西藏大学信息科学技术学院西藏拉萨850000 西藏自治区藏文信息技术人工智能重点实验室西藏拉萨850000 藏文信息技术教育部工程研究中心西藏拉萨850000

藏医药领域的文本主要以非结构化形式保存,藏医药文本的信息抽取对挖掘藏医药的知识有重要作用。针对现有藏文实体关系抽取模型语义表达能力差、嵌套实体抽取准确率低的问题,该文介绍了一种基于预训练模型的实体关系抽取方法,使用Tibeta... 详细信息

藏医药领域的文本主要以非结构化形式保存,藏医药文本的信息抽取对挖掘藏医药的知识有重要作用。针对现有藏文实体关系抽取模型语义表达能力差、嵌套实体抽取准确率低的问题,该文介绍了一种基于预训练模型的实体关系抽取方法,使用TibetanAI_ALBERT_v2.0预训练语言模型,使得模型更好地识别实体,使用Span方法解决实体嵌套问题。在Dropout的基础上,增加了一个KL散度损失函数项,提升了模型的泛化能力。在TibetanAI_TMIE_v1.0藏医药数据集上进行了实验,实验结果表明,精确率、召回率和F1值分别达到了84.5%、80.1%和82.2%,F1值较基线提升了4.4个百分点,实验结果证明了该文方法的有效性。

关键词：藏医药实体关系抽取预训练语言模型

Neuroprotective action of lithium in disorders of the central nervous system

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中南大学学报（医学版） 2011年第6期36卷 461-475页

作者： chi-tso chiU De-Maw CHUANG Section on Molecular Neurobiology National Institute of Mental HealthNational Institutes of Health

Substantial in vitro and in vivo evidence of neurotrophic and neuroprotective effects of lithium suggests that it may also have considerable potential for the treatment of neurodegenerative ***'s main mechanisms of action appear to stem from its ability to inhibit glycogen synthase kinase-3 activity and also to induce signaling mediated by brain-derived neurotrophic *** in turn alters a wide variety of downstream effectors,with the ultimate effect of enhancing pathways to cell *** addition,lithium contributes to calcium *** inhibiting N-methyl-D-aspartate receptor-mediated calcium influx,for instance,it suppresses the calcium-dependent activation of pro-apoptotic signaling *** inhibiting the activity of phosphoinositol phosphatases,it decreases levels of inositol 1,4,5-trisphosphate,a process recently identified as a novel mechanism for inducing *** mechanisms allow therapeutic doses of lithium to protect neuronal cells from diverse insults that would otherwise lead to massive cell ***,moreover,has been shown to improve behavioral and cognitive deficits in animal models of neurodegenerative diseases,including stroke,amyotrophic lateral sclerosis,fragile X syndrome,and Huntington's,Alzheimer's,and Parkinson's *** lithium is already FDA-approved for the treatment of bipolar disorder,our conclusions support the notion that its clinical relevance can be expanded to include the treatment of several neurological and neurodegenerative-related diseases.

关键词：《中南大学学报:医学版》期刊摘要编辑部

Incineration of kitchen waste with high nitrogen in vortexing fluidized-bed incinerator and its NO emission characteristics

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Journal of Environmental Sciences 2013年第9期25卷 1841-1846页

作者： Feng Duan chiensong Chyang Jiaruei Wen Jim tso School of Metallurgy and Resource Anhui University of Technology Department of Chemical Engineering Chung Yuan Christian University Research and Development Center for Environmental Technology Chung Yuan Christian University

Some municipal solid waste （MSW） can be used as the fuel. Combustion of MSW with high nitrogen content is successfully conducted in a lab-scale vortexing fluidized-bed incinerator （VFBI）. Pigskin with 16.5 wt.% nitrogen content was used to simulate the high nitrogen content kitchen waste, and silica sand was used as the bed material. The effects of operating conditions, such as the bed temperature, freeboard temperature, excess oxygen ratio, and static bed height on the CO and NO concentrations at the exit of combustor and cyclone were investigated. The experimental results show that the freeboard temperature is the most important factor for CO emission. The order of operating conditions impact on the NO emission is：（1） excess oxygen ratio; （2） bed temperature; （3） freeboard temperature; and （4） static bed height. Utilizing cyclone can significantly reduce the CO emission concentration when the CO concentration released from the freeboard is higher than 50 ppm. On the other hand, the cyclone has no significant effect on the NO emission. Despite having high nitrogen content, a low conversion from fuel-N to NO was attained. Compared with other types of combustors, VFBI reduces the CO and NO emission concentrations much better when burning MSW with high nitrogen content.

关键词： incineration high nitrogen content vortexing fluidized bed pollutant emission

Pollutant emission characteristics of rice husk combustion in a vortexing fluidized bed incinerator

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Journal of Environmental Sciences 2013年第2期25卷 335-339页

作者： Feng Duan chiensong Chyang Yucheng chin Jim tso School of Metallurgy and Resource Anhui University of Technology Department of Chemical Engineering Chung Yuan Christian University R&D Center for Environmental Technology Chung Yuan Christian University

Rice husk with high volatile content was burned in a pilot scale vortexing fluidized bed incinerator. The fluidized bed incinerator was constructed of 6 mm stainless steel with 0.45 m in diameter and 5 m in height. The emission characteristics of CO, NO, and SO2 were studied. The effects of operating parameters, such as primary air flow rate, secondary air flow rate, and excess air ratio on the pollutant emissions were also investigated. The results show that a large proportion of combustion occurs at the bed surface and the freeboard zone. The SO2 concentration in the flue gas decreases with increasing excess air ratio, while the NOx concentration shows reverse trend. The flow rate of secondary air has a significant impact on the CO emission. For a fixed primary air flowrate, CO emission decreases with the secondary air flowrate. For a fixed excess air ratio, CO emission decreases with the ratio of secondary to primary air flow. The minimum CO emission of 72 ppm is attained at the operating condition of 40% excess air ratio and 0.6 partition air ratio. The NOx and SO2 concentrations in the flue gas at this condition are 159 and 36 ppm, which conform to the EPA regulation of Taiwan.

关键词： incineration rice husk vortexing fluidized bed pollutant emission

Entrepreneurship Measurement and Comparison:Holistic Acceptability Global Entrepreneurship Index

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Journal of Systems Science & Complexity 2020年第6期33卷 1959-1979页

作者： SONG Lianlian LAI Kin Keung tso Kwok Fai Geoffrey YEN Jerome Department of Business Management Nanjing University of Aeronautics and AstronauticsNanjing 210016China College of Economics Shenzhen UniversityShenzhen 518060China Department of Management Science City University of Hong KongHong KongChina Faculty of Science and'Technology University of MacaoMacaoChina

The Global Entrepreneurship and Development Institute annually publishes the Global Entrepreneurship Index(GEI)to show entrepreneurship of each country/*** GEI is obtained by averaging the scores of three sub-indexes,entrepreneurial attitudes,entrepreneurial abilities and Entrepreneurial ***,this GEI construction method with equal weights for three subindexes may be controversial,since the relative importance among the three sub-indexes may vary across countries and areas due to economic and social/cultural *** study comprehensively considers all possible weights,and formulates an interval entrepreneurship evaluation *** the Stochastic multicriteria acceptability analysis,the authors build an improved GEI,which the authors term the Holistic Acceptability Global Entrepreneurship *** method differs from the conventional wisdom that assigns exact values to corresponding weights,but explores a weight space considering all possible weight ***,the proposed method is confirmed using an empirical study measuring and comparing the entrepreneurship of the top 20 countries and areas in terms of 2017 GEI.

关键词： Entrepreneurship entrepreneurship evaluation matrix global entrepreneurship index stochastic multicriteria acceptability analysis

SYSTEMATIC ERROR FROM Th/U RATIO IN LUMINESCENCE AND ESR DATING

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Nuclear Science and Techniques 1995年第2期6卷 113-116页

作者： Li Shenghua and Man-yin Wong tso(Radioisotope Unit,University of Hong Kong,Hong Kong)

In luminescence and ESR dating methods,total count rate from thick source alpha counting is commonly used fox estimating annual dose with assumption of equal activities for both uranium and thorium decay *** is equal to a Th/U weight ratio of *** systematic error in total dose rate due to uncertainty of the ratio is *** is found that the error is insignificant for uniformly distributed samples such as sediment,but can be significant for some extreme circumstances.

关键词： Luminescence and ESR dating Th/U ratio Systematic error Infinite matrix