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Heterostructured graphene quantum dot/WSe2/Si photo-detector with suppressed dark current and improved detectivity

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Nano Research 2018年第6期11卷 3233-3243页

作者： mengxing sun Qiyi Fang Dan Xie Yilin sun Liu Qian Jianlong Xu Peng Xiao Changjiu Teng Weiwei Li Tianling Ren Yanfeng Zhang Institute ofMicroelectronics & Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University Beijing 100084 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100084 China Department of Chemistry Tsinghua University Belling 100084 China Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou 215123 China

A high-performance heterojunction photodetector is formed by combining an n-type Si substrate with p-type monolayer WSe2 obtained using physical vapor deposition. The high quality of the WSe2/Si heterojunction is demonstrated by the suppressed dark current of I nA and the extremely high rectification ratio of 107. Under illumination, the heterojunction exhibits a wide photoresponse range from ultraviolet to near-infrared radiation. The introduction of graphene quantum dots （GQDs） greatly elevates the photodetective capabilities of the heterojunction with strong light absorption and long carrier lifetimes. The GQDs/WSe2/Si heterojunction exhibits a high responsivity of -707 mA·W^-1, short response time of 0.2 ms, and good specific detectivity of -4.51×10^9 Jones. These properties suggest that the GQDs/WSe2/Si heterojunction holds great potential for application in future high- performance photodetectors.

关键词： heterojunction photodetector Si WSe2 graphene quantum dots

Application of chemical vapor-deposited monolayer ReSe2 in the electrocatalytic hydrogen evolution reaction

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Nano Research 2018年第4期11卷 1787-1797页

作者： Shaolong Jiang Zhepeng Zhang Na Zhang Yahuan Huan Yue Gong mengxing sun Jianping Shi Chunyu Xie Pengfei Yang Qiyi Fang He Li Lianming Tong Dan Xie Lin Gu Porun Liu Yanfeng Zhang Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China Center for Nanochemistry (CNC) Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China Institute of Microelectronics Tsinghua National Laboratory for Information Science and Technology (TNList) Tsinghua University Beijing 100084 China Collaborative Innovation Center of Quantum Matter Beijing 100190 China Centre for Clean Environment and Energy Griffith University Gold Coast 4222 Australia

Controlled synthesis of structurally anisotropic rhenium diselenide （ReSe2） with macroscopically uniform and strictly monolayer thickness as well as tunable domain shape/size is of great interest for electronics-, optoelectronics-, and electrocatalysis-related applications. Herein, we describe the controlled synthesis of uniform monolayer ReSe2 flakes with variable morphology （sunflower- or truncated-triangle-shaped） on SiO2/Si substrates using different ambient-pressure chemical vapor deposition （CVD） setups. The prepared polycrystalline ReSe2 flakes were transferred intact onto Au foil electrodes and tested for activity in the hydrogen evolution reaction （HER）. Interestingly, compared to the compact truncated-triangle-shaped ReSe2 flakes, their edge-abundant sunflower-shaped counterparts exhibited superior electrocatalytic HER activity, featuring a relatively low Tafel slope of - 76 mV/dec and an exchange current density of 10.5 μA/cm2. Thus, our work demonstrates that CVD-grown ReSe2 is a promising two- dimensional anisotropic material for applications in the electrocatalytic HER.

关键词： rhenium diselenide,chemical vapor deposition（CVD）,monolayer,morphology control,hydrogen evolution reaction （HER）

Clinical research linking Traditional Chinese Medicine constitution types with diseases:a literature review of 1639 observational studies

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Journal of Traditional Chinese Medicine 2020年第4期40卷 690-702页

作者： Liang Xue Wang Qi Jiang Zeqiang Li Zhuqing Zhang mengxing Yang Peiying Wang Xin Wang Yanqiu Qin Yuehua Li Tianxing Zhang Tianyi Wang Yi sun Jianxiang Li Yusi Luo Hui Li Lingru Center for Studies in Constitution Research and Reproductive Sciences of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Institute for Tibetan Medicine China Tibetology Research CenterBeijing 100101China

OBJECTIVE:To analyze clinical studies on correlations between Traditional Chinese Medicine(TCM)body constitution types and diseases published in the past 10 years,and to provide an evidence base to support the use of such correlations for health maintenance and disease prevention.METHODS:We searched five databases for the period April 2009 to December 2019:China National Knowledge Infrastructure Database,Wanfang Database,China Science and Technology Journal Database,PubMed and Embase.Three types of observational studies on correlation between constitution types and diseases were included:cross-sectional,case-control and cohort studies.Descriptive statistical methods were employed for data analysis.RESULTS:A total of 1639 clinical studies were identified:1452(88.59%)cross-sectional studies,115(7.02%)case-control studies and 72(4.39%)cohort studies covering 30 regions of China and five other countries(Malaysia,South Korea,Singapore,Thailand and France).The collection of studies comprised 19 disease categories and 333 different diseases.The 10 most commonly studied diseases were hypertension,diabetes,stroke,coronary atherosclerotic heart disease(CAHD),sleep disorders,neoplasm of the breast,dysmenorrhea,fatty liver disease,chronic viral hepatitis B and dyslipidemia.We found high distributions for each biased constitution type in different patient populations as follows:Qi-deficiency constitution in stroke,diabetes,chronic obstructive pulmonary disease,acquired immunodeficiency syndrome and hypertension;Yang-deficiency constitution in female infertility,osteoporosis,irritable bowel syndrome,gonarthrosis and dysmenorrhea;Yin-deficiency constitution in hypertension,diabetes,constipation,female climacteric states and osteoporosis;phlegm-dampness constitution in hypertension,stroke,fatty liver disease,diabetes and metabolic syndrome;damp-heat constitution in acne,chronic gastritis,chronic viral hepatitis B,human papillomavirus infection and hyperuricemia;blood-stasis constitution in CAHD,endometriosis and stroke;Qi-stagna

关键词： Body constitution Medicine,Chinese traditional Clinical study Review

可见光诱导的新型官能化芳基异腈化合物的二氟烷基化环化反应

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有机化学 2023年第8期43卷 2913-2925页

作者：冯莹珂王贺崔梦行孙然王欣陈阳李蕾辽宁石油化工大学石油化工学院辽宁抚顺113001

报道了一种新设计的功能化芳基异腈化合物与市售CF_(2)前体的可见光催化的二氟烷基化反应.在温和的条件下,通过串联的自由基加成/环化过程,构建了一系列含CF_(2)的吲哚-1,2-稠二氮杂环酮.该反应不仅生成了一类多环吲哚稠七元氮杂环,而... 详细信息

报道了一种新设计的功能化芳基异腈化合物与市售CF_(2)前体的可见光催化的二氟烷基化反应.在温和的条件下,通过串联的自由基加成/环化过程,构建了一系列含CF_(2)的吲哚-1,2-稠二氮杂环酮.该反应不仅生成了一类多环吲哚稠七元氮杂环,而且拓宽了官能化异腈化合物的反应类型.

关键词：官能化芳基异腈自由基环化二氟烷基化吲哚稠七元氮杂环

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中南沿海气候条件下风力机可靠性分析

机床与液压 2022年第4期50卷 173-179页

作者：苏梦星陈严陈琴孙高山马其鹏汕头大学能源科学研究所广东汕头515000 汕头大学智能制造技术教育部重点实验室广东汕头515000

基于风电场现场数据,根据故障率、故障时间和维修成本等指标确定影响风力机可靠性的主要零部件。利用FTA法分析主要零部件故障的具体原因;采用相关性分析法分析风力机故障率与环境因素(风速、温度及环境湿度)之间的相关性;利用季节指数... 详细信息

基于风电场现场数据,根据故障率、故障时间和维修成本等指标确定影响风力机可靠性的主要零部件。利用FTA法分析主要零部件故障的具体原因;采用相关性分析法分析风力机故障率与环境因素(风速、温度及环境湿度)之间的相关性;利用季节指数分析风力机故障率的季节性特征。结果表明:液压系统﹑电气控制系统和偏航系统故障是造成风力机故障率高的主要原因,故障率占比达67.91%;发电机和传动系统虽然故障率较低,但其平均故障时间和维修成本更高;故障率与风速、温度和湿度存在明显相关性,其中故障率与风速存在负相关关系,与温度和环境湿度存在正相关性。

关键词：风力机可靠性故障树相关性分析季节性特征

利妥昔单抗治疗非亲缘脐血干血细胞移植后并发免疫性血小板减少症1例报道(英文)

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中德临床肿瘤学杂志：英文版 2013年第6期12卷 300-302页

作者： mengxing Li Jishi Wang Yan Zhang Zhiqiang sun Yanju Li Xiaoli Zhou Department of Hematology The Affiliated Hospital of Guiyang Medical College

Immune thrombocytopenia (ITP) is a chronic disease resulting from increased platelet destruction and impaired platelet production. Secondary ITP can be a manifestation of chronic graft-versus-host disease (GVHD) and represent a lymphoproliferative disorder. A boy with chronic graft-versus-host disease after cord blood stem cell transplantation who had severe refractory immune-mediated thrombocytopenia received infusion of rituximab weekly, 375 mg/m2, for 4 weeks. Platelets count of the patient was recovered, and rituximab was well tolerated with no severe toxicity observed during treatment.

关键词：肿瘤临床治疗化疗

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监护仪房颤综合管理应用的临床意义

中国医疗器械杂志 2022年第6期46卷 602-606,620页

作者：关则宏刘梦星孙泽辉何先梁姚静刘麟刘琮深圳迈瑞生物医疗电子股份有限公司深圳市518057 深圳市儿童医院深圳市518026

目的为了提高心房颤动(房颤)心律失常的检测准确度,实现对房颤的科学化管理和评估,该研究提出了一种房颤综合管理工具,方便医护人员对房颤患者进行系统评估管理。方法研究设计了一种房颤专业视图(AF View),将房颤的事件报警和负荷等信... 详细信息

目的为了提高心房颤动(房颤)心律失常的检测准确度,实现对房颤的科学化管理和评估,该研究提出了一种房颤综合管理工具,方便医护人员对房颤患者进行系统评估管理。方法研究设计了一种房颤专业视图(AF View),将房颤的事件报警和负荷等信息统一,集中呈现患者监测周期内的房颤事件统计分布数据和心率、血压、ST值等其他生理参数/特征的趋势数据,通过一份界面图,获取多个维度的汇总信息。同时AF View中的监测周期和监测参数/特征可以调整,便于获取不同时间周期下和不同参数/特征下的汇总信息,了解房颤患者的病情发展。结果实现了房颤的精准检测和综合管理。结论该研究所提出的房颤综合管理应用,有助于医护人员实时掌握房颤患者的病情发展,及时调整治疗方案。

关键词：心房颤动综合管理 AF View 房颤负荷临床意义

Is body constitution of traditional Chinese medicine associated with diseases? a literature review of 1639 observational studies

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Journal of Traditional Chinese Medicine 2021年

OBJECTIVE: To investigate and analyze the clinical studies on correlation between body constitution of traditional Chinese medicine (TCM) and diseases published in past ten years. And provide evidence basis for health maintenance and disease prevention. METHODS: We searched five databases including China National Knowledge Infrastructure (CNKI), Wanfang Data, CQVIP, PubMed and Embase from April 2009 to December 2019. Observational studies on correlation between constitution and diseases with design types of cross-sectional study, case-control study and cohort study were included. Descriptive statistical methods were employed for data analysis. RESULTS: A total of 1639 clinical studies were identified, including 1452 (88.59%) cross-sectional studies, 115 (7.02%) case-control studies and 72 (4.39%) cohort studies. The study covered 30 regions of China and 5 other countries (Malaysia, South Korea, Singapore, Thailand and France). 333 diseases were studied, covering 19 disease categories. The 10 mostly studied diseases were hypertension, diabetes, stroke, coronary atherosclerotic heart disease (CAHD), sleep disorders, neoplasm of breast, dysmenorrhea, fatty liver disease, chronic viral hepatitis B and dyslipidaemia. Qi-deficiency constitution had a high distribution in stroke, diabetes, chronic obstructive pulmonary disease, acquired immunodeficiency syndrome and hypertension. Yang-deficiency constitution had a high distribution in female infertility, osteoporosis, irritable bowel syndrome, gonarthrosis and dysmenorrhea. Yin-deficiency constitution had a high distribution in hypertension, diabetes, constipation, female climacteric states and osteoporosis. Phlegm-dampness constitution had a high distribution in hypertension, stroke, fatty liver disease, diabetes and metabolic syndrome. Damp-heat constitution had a high distribution in acne, chronic gastritis, chronic viral hepatitis B, human papillomavirus infection and hyperuricaemia. Blood-stasis constitution had a high distribution in CAHD, endometriosis and stroke

关键词： Body constitution Correlation between constitution and diseases Clinical study Chinese medicine Literature review

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淮河入江水道新民滩控制线行洪能力变化分析

中国防汛抗旱 2022年第7期32卷 58-60,65页

作者：钱睿智王永东薛军孙梦醒江苏省水文水资源勘测局扬州分局扬州225002

淮河入江水道是淮河流域的主要行洪通道,承泄淮河上游70%以上的洪水入长江,新民滩控制线作为淮河入江水道的咽喉部分,其行洪能力关系到整个淮河流域的泄洪能力及防洪安全。通过对淮河入江水道整治工程实施前后的新民滩控制断面实测水位... 详细信息

淮河入江水道是淮河流域的主要行洪通道,承泄淮河上游70%以上的洪水入长江,新民滩控制线作为淮河入江水道的咽喉部分,其行洪能力关系到整个淮河流域的泄洪能力及防洪安全。通过对淮河入江水道整治工程实施前后的新民滩控制断面实测水位、流量数据进行比较分析,发现切滩整治工程的实施显著提高了新民滩控制线的行洪能力,恢复了入江水道设计行洪流量,有效保证大洪水安全过境。

关键词：淮河入江水道新民滩控制线行洪能力工程整治切滩