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MOF-derived Cu embedded into N-doped mesoporous carbon as a robust support of PdAu nanocatalysts for ethanol electrooxidation

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Rare Metals 2024年第3期43卷 1083-1094页

作者： Yu-Fu Huang Peng Wu Jun-Ping tang Jian Yang Jing Li Shuai Chen Xue-Ling Zhao ChengChen Bin-Wei Zhang Yan-Yun Ma Wei-Heng shi Dong-Hai Lin shi-Gang Sun School of Energy and Materials Shanghai Engineering Research Center of Advanced Thermal Functional MaterialsShanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai201209China State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing401331China Center of Advanced Energy Technology and Electrochemistry Institute of Advanced Interdisciplinary StudiesChongqing UniversityChongqing400044China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA19104USA

Metal-organic frameworks(MOFs)h ave attracted widespread attention due to their large surface area and porous *** designing the nanostructures of MOFs to promote their application in ethanol electrooxidation is still a ***,a novel Cu-NCNs(Cu-nitrogen-doped carbon nanotubes)support was synthesized by pyrolysis of melamine(MEL)and Cu-ZIF-8 together,and then,Pd-Au nanoalloys were loaded by sodium borohydride reduction method to prepare PdAu@Cu-NCNs *** generating mesoporous carbon with high specific surface area and favorable electron and mass transport can be used as a potential excellent carrier for PdAu *** addition,the balance of catalyst composition and surface structure was tuned by controlling the content of Pd and ***,the best-performed Pd_(2)Au_(2)@Cu-NCN-1000-2(where 1000 means the carrier calcination temperature,and 2 means the calcination constant temperature time)catalyst exhibits better long-term stability and electrochemical activity for ethanol oxidation in alkaline media(4.80 A·mg^(-1)),which is 5.05 times higher than that of commercial Pd/C(0.95 A·mg^(-1)).Therefore,this work is beneficial to further promoting the application of MOFs in direct ethanol fuel cells(DEFCs)and can be used as inspiration for the design of more efficient catalyst support structures.

关键词： Metal-organic frameworks(MOFs) N-doped Mesoporous carbon PdAu Ethanol electrooxidation

Applications of gastric peroral endoscopic myotomy in the treatment of upper gastrointestinal tract disease

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 658-669页

作者： shi-Yu Chang Guo-Hua Jin Hai-Bo Sun Dong Yang Tong-Yu tang Department of Gastroenterology The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

Gastric peroral endoscopic myotomy(G-POME)is an emerging minimally invasive endoscopic technique involving the establishment of a submucosal tun-nel around the pyloric *** 2013,Khashab et al used G-POME for the first time in the treatment of gastroparesis with enhanced therapeutic efficacy,prov-iding a new direction for the treatment of *** the recent and rapid development of G-POME therapy technology,progress has been made in the treatment of gastroparesis and other upper digestive tract diseases,such as congenital hypertrophic pyloric stenosis and gastric sleeve stricture,with *** article reviews the research progress and future prospects of G-POME for the treatment of upper digestive tract gastrointestinal diseases.

关键词： Gastric peroral endoscopic myotomy Upper digestive tract diseases Gastroparesis Congenital hypertrophic pyloric stenosis Gastric sleeve stricture

Simultaneous fluorescence and Compton scattering computed tomography based on linear polarization X-ray

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NUCLEAR SCIENCE AND TECHNIQUES 2024年第10期35卷 1-10页

作者： Chi, Zhi-Jun Zhang, Hong-Ze Lin, Jin Zhang, Xuan-Qi Ding, Hao Tian, Qi-Li Zhang, Zhi Du, Ying-Chao Huang, Wen-Hui tang, chuan-Xiang Beijing Normal Univ Sch Phys & Astron Minist Educ Key Lab Beam Technol Beijing 100875 Peoples R China Tsinghua Univ Minist Educ Dept Engn Phys Key Lab Particle & Radiat Imaging Beijing 100084 Peoples R China

PurposeTo propose a method for simultaneous fluorescence and Compton scattering computed tomography by using linearly polarized *** Carlo simulations were adopted to demonstrate the feasibility of the proposed method. In the simulations, the phantom is a polytetrafluoroethylene cylinder inside which are cylindrical columns containing aluminum, water, and gold (Au)-loaded water solutions with Au concentrations ranging between 0.5 and 4.0 wt%, and a parallel-hole collimator imaging geometry was adopted. The light source was modeled based on a Thomson scattering X-ray source. The phantom images for both imaging modalities were reconstructed using a maximumlikelihood expectation maximization *** the X-ray fluorescence computed tomography (XFCT) and Compton scattering computed tomography (CSCT) images of the phantom were accurately reconstructed. A similar attenuation contrast problem for the different cylindrical columns in the phantom can be resolved in the XFCT and CSCT images. The interplay between XFCT and CSCT was analyzed, and the contrast-to-noise ratio (CNR) of the reconstruction was improved by correcting for the mutual influence between the two imaging modalities. Compared with K-edge subtraction imaging, XFCT exhibits a CNR advantage for the *** XFCT and CSCT can be realized by using linearly polarized X-rays. The synergy between the two imaging modalities would have an important application in cancer radiation therapy

关键词： X-ray fluorescence computed tomography Compton scattering computed tomography Linear polarization Thomson scattering X-ray source Monte Carlo simulation DUAL-ENERGY CT NANOPARTICLE-LOADED OBJECTS ATTENUATION COEFFICIENTS XFCT PARAMETRIZATION FEASIBILITY ELEMENTS

Acute Effects of Exposure to Fine Particulate Matter and Its Constituents on Sex Hormone Among Postmenopausal Women — Beijing, Tianjin, and Hebei PLADs, China, 2018–2019

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China CDC weekly 2024年第13期6卷 249-253,I0001-I0004页

作者： Yanlin Tian Jiaonan Wang Jianlong Fang Chen Chen Feng Zhao Yi Zhang Peng Du Yawei Li Wanying shi Yuanyuan Liu Enmin Ding Song tang Xu Yue Xiaoming shi Chinese Research Academy of Environmental Sciences BeijingChina Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)Nanjing University of Information Science&TechnologyNanjing CityJiangsu ProvinceChina China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina Department of Epidemiology and Health Statistics School of Public HealthCapital Medical Universityand Beijing Municipal Key Laboratory of Clinical EpidemiologyBeijingChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina

What is already known on this topic?Exposure to fine particulate matter(PM_(2.5))was linked to endocrine hormone disruption in the reproductive ***,it was unclear which specific components of PM_(2.5) were primarily responsible for these *** is added by this report?The study presented the initial epidemiological evidence that brief exposure to PM_(2.5) can elevate estradiol levels in postmenopausal *** particle components had unique effects,with watersoluble ions and specific inorganic elements like Ag,As,Cd,Hg,Ni,Sb,Se,Sn,and Tl potentially playing significant roles in increasing estradiol *** are the implications for public health practice?The study established that the prevalence of air pollution,along with its specific components,has been recognized as a novel risk factor affecting the balance of sex hormones.

关键词： pollution Particulate primarily

Recombinant adeno-associated virus 8 vector in gene therapy:Opportunities and challenges

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Genes & Diseases 2024年第1期11卷 283-293页

作者： Liyuan Zhao Zixuan Yang Minhui Zheng Lei shi Mengyun Gu Gang Liu Feng Miao Yan Chang Fanghua Huang Naping tang Anhui University of Traditional Chinese Medicine HefeiAnhui 230000China Yangtze Delta Drug Advanced Research Institute Yangtze Delta Pharmaceutical CollegeNantongJiangsu226133China Shanghai Innostar Bio-Technology Co. LtdChina State Institute of Pharmaceutical IndustryShanghai 201203China Innostar Bio-tech Nantong Co. Ltd.NantongJiangsu 226133China Center for Drug Evaluation National Medical Products AdministrationBeijing 100022China

In recent years,significant breakthroughs have been made in the field of gene ***-associated virus(AAV)is one of the most promising gene therapy vectors and a powerful tool for delivering the gene of *** the AAV vectors,AAV serotype 8(AAv8)has attracted much attention for its efficient and stable gene transfection into specific ***,recombinant AAv8 has been widely used in gene therapy research on a va-riety of diseases,including genetic diseases,cancers,autoimmune diseases,and viral diseases.

关键词： AAV8 Adeno-associated virus Gene therapy Primates

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控制带技术在纳米产业职业危害管理中的应用

环境与职业医学 2017年第6期34卷 555-559页

作者：唐仕川朱鹏余珉张元宝北京市劳动保护科学研究所职业安全健康北京市重点实验室北京100054 华北科技学院研究生院北京101601 浙江省医学科学院职业病防治研究所浙江杭州310013

纳米产业存在的潜在职业接触风险与健康危害问题给职业卫生安全防范工作提出了新的挑战。尽管纳米产业中的不同作业岗位存在着不同程度的暴露风险,但职业性接触所致的潜在健康危害和职业接触限值尚处于研究过程。因而,应当依据现有风险... 详细信息

纳米产业存在的潜在职业接触风险与健康危害问题给职业卫生安全防范工作提出了新的挑战。尽管纳米产业中的不同作业岗位存在着不同程度的暴露风险,但职业性接触所致的潜在健康危害和职业接触限值尚处于研究过程。因而,应当依据现有风险管理决策对纳米产业加以职业危害风险管理。其中,控制带技术在应对不确定性风险方面有着相对优势,且在全球职业卫生领域中有着近20年的发展历程,是一类针对作业场所有毒有害物质进行定性和(或)半定量风险评价和管理的策略手段。纳米产业职业危害风险管理控制带技术的探索与发展不仅可为职业卫生管理提供依据,还可指导职业健康监护工作。

关键词：控制带暴露风险危害分类纳米技术风险管理

Ethanol extract of Cyathulae Radix inhibits osteoclast differentiation and bone loss

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Chinese Journal of Natural Medicines 2024年第3期22卷 212-223页

作者： shi Liying REN Liuyi LI Jinping LIU Xin LU Jingjing JIA Lujuan XIE Baoping tang Siyuan LIU Wei ZHANG Jie Department of Pharmachemistry Xiangya School of Pharmaceutical SciencesCentral South UniversityChangsha 410013China Hunan Key laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases Central South UniversityChangsha 410013China Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases Ministry of EducationGannan Medical UniversityGanzhou 341000China Xiangya Nursing School Central South UniversityChangsha 410013China The Third Xiangya Hospital Central South UniversityChangsha 410013China

Cyathulae Radix,a traditional Chinese medicine and a common vegetable,boasts a history spanning *** enhances bone density,boosts metabolism,and effectively alleviates osteoporosis-induced *** its historical use,the molecular mechanisms behind Cyathulae Radix’s impact on osteoporosis remain *** this study,we investigated the effects and mechanisms of Cyathulae Radix ethanol extract(CEE)in inhibiting osteoporosis and ***-week-old female mice underwent ovariectomy and were treated with CEE for eight ***-computed tomography(micro-CT)assessed histomorphometric parameters,bone tissue staining observed distal femur histomorphology,and three-point bending tests evaluated tibia mechanical ***-linked immunosorbent assay(ELISA)measured serum estradiol(E2),receptor activator for nuclear factor B ligand(RANKL),and osteoprotegerin(OPG)***-related markers were analyzed via Western blotting(WB)and quantitative real-time polymerase chain reaction(qRT-PCR).Additionally,CEE effects on RANKL-induced osteoclast formation and bone resorption were investigated in vitro using tartrate-resistant acid phosphatase(TRAP)staining,qRT-PCR,and WB *** with the ovariectomy(OVX)group,CEE treatment enhanced trabecular bone density,maximal load-bearing capacity,and various histomorphometric *** E2 and OPG levels significantly increased,while Receptor activator of nuclear factor-κB(RANK)decreased in the CEE *** downregulated matrix metallopeptidase 9(MMP-9),Cathepsin K(CTSK),and TRAP gene and protein *** bone marrow macrophages(BMMs),CEE reduced mature osteoclasts,bone resorption pit areas,and MMP-9,CTSK,and TRAP expression during osteoclast *** with DMSO treatment,CEE markedly inhibited RANK,TNF receptor associated factor 6(TRAF6),Proto-oncogene c-Fos(c-Fos),Nuclear factor of activated T-cells cytoplasmic 1(NFATc1)expressions,and Extracellular regula

关键词： Osteoporosis Osteoclast BMMs Cyathulae Radix RANKL ER/RANK/NFATc1 signaling pathway

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基于城市内涝数值模拟的设计暴雨雨型研究

中国给水排水 2021年第5期37卷 97-105页

作者：唐明许文斌尧俊辉唐传师南昌工程学院水利与生态工程学院江西南昌330099 南昌市城市内涝防治与河湖水质调控工程技术研究中心江西南昌330038 南昌市城市规划设计研究总院江西南昌330038 南昌市水文局江西南昌330018 南昌市气象局江西南昌330008

以南昌市青山湖排涝片区为研究对象,从典型暴雨的选择入手,结合现行规范要求,分析了不同典型暴雨的放大方法以及水利部门"综合雨型"的优缺点,应用MIKE软件模拟不同设计暴雨雨型对城市排涝过程的影响。通过对泵站开机负荷、主要控制断面... 详细信息

以南昌市青山湖排涝片区为研究对象,从典型暴雨的选择入手,结合现行规范要求,分析了不同典型暴雨的放大方法以及水利部门"综合雨型"的优缺点,应用MIKE软件模拟不同设计暴雨雨型对城市排涝过程的影响。通过对泵站开机负荷、主要控制断面的水位和流量等情况的对比分析,提出城市内涝防治体系设计暴雨雨型计算方法的选择建议。研究结果表明,同倍比放大法虽然便于应用,但其主要统计时段降雨量的重现期差异很大,难以客观评价市政排水与流域排涝系统的能力;同频率放大法能够控制主要时段的"同频",但其时间刻度需要细化,调算过程较为复杂,而且不同典型暴雨同频放大条件下的排涝过程差异较大;"复合雨型"可以兼顾城市排水与流域排涝系统的能力复核,雨型生成过程相对简单,便于应用。

关键词：城市内涝防治设计暴雨雨型数值模拟

CMOS Temperature Sensors: From Module Design to System Design

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Chinese Journal of Electronics 2024年

作者： Zhong tang Xiao-Peng YU Zheng shi Nianxiong Nick Tan Vango Technologies Zhejiang Univerisity

In a smart CMOS temperature sensor, the temperature information is converted to an electrical signal, such as voltage, current, or time delay, and then it is digitized by an analog-to-digital converter(ADC). Instead of categorizing sensors according to their sensing elements, this work introduces different CMOS temperature sensors based on their signal processing domains of the readout circuits. To design a suitable sensor for a specific application,two general design methodologies are also introduced with state-of-the-art examples. Depending on the applications,the corresponding types of the sensor and design methodology can be chosen to optimize the performance.

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