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V2O5-WO3/TiO2 SCR催化剂的钙中毒机理研究

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应用基础与工程科学学报 2018年第1期26卷 1-11页

作者：何德良任慧莺朱天时张勤陶莉湖南大学化学化工学院湖南长沙410082 国网湖南省电力公司电力科学研究院湖南长沙410007

SCR（selective catalytic reduction）催化剂容易发生钙中毒而导致其催化活性下降.将商业SCR催化剂浸渍在3种不同前驱体溶液（Ca Cl2、Ca（NO3）2和Ca SO4）中进行了钙中毒研究.采用脱硝催化评价装置、X射线衍射分析（XRD）、氮气吸脱... 详细信息

SCR（selective catalytic reduction）催化剂容易发生钙中毒而导致其催化活性下降.将商业SCR催化剂浸渍在3种不同前驱体溶液（Ca Cl2、Ca（NO3）2和Ca SO4）中进行了钙中毒研究.采用脱硝催化评价装置、X射线衍射分析（XRD）、氮气吸脱附分析（BET）和氨气吸脱附分析（NH3-TpD）等对中毒后的催化剂和新鲜催化剂进行了催化活性、酸性位酸量、比表面积与孔结构等测试.结果表明,经过3种前驱体溶液中毒处理的催化剂,其活性均出现了明显的下降.其中Ca Cl2和Ca（NO3）2主要中和催化剂表面较强酸性位点;而Ca SO4是通过中和催化剂表面较强酸性位的同时,会堵塞催化剂表面孔道,引起SCR催化剂比表面积、孔体积下降.Ca Cl2和Ca（NO3）2导致的催化剂总酸量下降及Ca SO4导致的催化剂比表面积下降与前驱体溶液浓度之间的关系满足指数衰减模型.

关键词：选择性催化还原催化剂钙中毒酸性位孔结构

Conversion of hydroxide into carbon-coated phosphide using plasma for sodium ion batteries

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Nano Research 2022年第3期15卷 2023-2029页

作者： Jin Liang Guoyin zhu Yizhou zhang Hanfeng Liang wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211800China college of Chemistry and chemical engineering Xiamen UniversityXiamen 361005China School of Chemistry and Materials science Institute of Advanced Materials and Flexible Electronics(IAMFE)Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China

transition metal phosphides(TMps)are promising candidates for sodium ion battery anode materials because of their high theoretical capacity and earth *** to many other p-based conversion type electrodes,TMps suffer from large volumetric expansion upon cycling and thus quick performance ***,TMps are easily oxidized in air,resulting in a surface phosphate layer that not only decreases the electric conductivity but also hinders the Na ion *** this work,we present a general electrode design that overcomes these two major challenges facing *** metal hydroxide and glucose as precursors,we show that the metal hydroxide can be converted into phosphide whereas the glucose simultaneously decomposes and forms carbon shell on the phosphide particles under a plasma ***2p@C core shell structures as a proof-of-concept are designed and *** in situ formed carbon shell protects the Ni2p from ***,the high-energy plasma introduces porosity and vacancies to the Ni2p and more importantly produces phosphorus-rich nickel phosphides(Nipx).As a result,the Ni2p@C electrodes achieve high sodium capacity(693 mAh·g^(−1) after 50 cycles at 100 mA·g^(−1))and excellent cyclability(steady capacity maintained for at least 1,500 cycles).Our work provides a general strategy for enhancing the sodium storage performance of TMps,and in general many other conversion type electrode materials that are unstable in air and suffer from large volumetric changes upon cycling.

关键词： porous anodes Ni2p plasma conversion phosphorus-rich sodium ion batteries

CEpC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves weiming An Rui An Daniele paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs philip Bambade Yong Ban tripamo Bandyopadhyay Shou-Shan Bao Desmond p.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing beijing Computational science Research Center Beijing beijing Conveyi LTD Beijing beijing Glass Research Institute Co. LtdBeijing beijing Institute of Technology Beijing beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced science and Technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and Technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CppM(AMU/IphU&CNRS/INp) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear problems of Joint Institute for Nuclear Research(DLNp JINR) Dubna East china university Of science And Technol

The Circular Electron positron Collider(CEpC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super proton proton Collider(SppC).The CEpC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(Ip),resulting in an integrated luminosity of 13 ab^(-1)for two Ips over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEpC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the preliminary Conceptual Design Report(pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Blocking the pD-1 signal transduction by occupying the phosphorylated ITSM recognition site of SHp-2

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science china Life sciences 2024年

作者： Wenjie Li Wenyi Mei Hewei Jiang Jie wang Xiaoli Li Lina Quan Yanyan Diao Yanni Ma Sisi Fan zhuwei Xie Mengdie Gong Huan zhu Dewen Bi Feng zhang Lei Ma Jian zhang Yufeng Gao Aris paschalidis Honghuang Lin Fangfang Liu Kangdong Liu Mingliang Ye Zhenjiang Zhao Yajun Duan zhuo Chen Yufang Xu weilie Xiao Shengce Tao Lili zhu Honglin Li Innovation Center for AI and Drug Discovery East China Normal University Shanghai Key Laboratory of New Drug Design School of PharmacyEast China University of Science&Technology Shanghai Center for Systems Biomedicine Key Laboratory of Systems Biomedicine (Ministry of Education)Shanghai Jiao Tong University Lingang Laboratory Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of EducationYunnan Characteristic Plant Extraction LaboratoryYunnan Provincial Center for Research&Development of Natural ProductsState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Pharmacy and School of Chemical Science and TechnologyYunnan University CAS Key Laboratory of Separation sciences for Analytical Chemistry National Chromatographic R&A CenterDalian Institute of Chemical PhysicsChinese Academy of Sciences Department of Cardiology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of China Department of Infectious Diseases The First Affiliated Hospital of Anhui Medical University Department of Medicine University of Massachusetts Chan Medical School Department of pathophysiology School of Basic Medical SciencesAcademy of Medical ScienceCollege of MedicineZhengzhou University

Targeting the pD-1/pD-L1 axis with small-molecular inhibitors is a promising approach for immunotherapy. Here, we identify a natural pentacyclic triterpenoid, pygenic Acid A(pA), as a pD-1 signaling inhibitor. pA exerts anti-tumor activity in hpD-1 knock-in C57BL/6 mice and enhances effector functions of T cells to promote immune responses by disrupting the pD-1 signaling transduction. Furthermore, we identify SHp-2 as the direct molecular target of pA for inhibiting the pD-1 signaling transduction. Subsequently, mechanistic studies suggest that pA binds to a new druggable site in the phosphorylated pD-1 ITSM recognition site of SHp-2, inhibiting the recruitment of SHp-2 by pD-1. Taken together, our findings demonstrate that pA has a potential application in cancer immunotherapy and occupying the phosphorylated ITSM recognition site of SHp-2 may serve as an alternative strategy to develop pD-1 signaling inhibitors. In addition, our success in target recognition provides a paradigm of target identification and confirmation for natural products.

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Locally differentially private distributed algorithms for set intersection and union

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science china(Information sciences) 2021年第11期64卷 234-236页

作者： qiao XUE Youwen zhu Jian wang Xingxin LI Ji zhang college of Computer science and Technology Nanjing University of Aeronautics and Astronautics Collaborative Innovation Center of Novel Software Technology and Industrialization Faculty of Health Engineering and Science University of Southern Queensland

Dear editor,privacy-preserving distributed set intersection and union(ppSI, ppSU) have received much attention in recent years because of their wide applications. Most of existing solutions [1, 2] utilize secure multiparty computation protocols(SMCp) [3, 4] to settle the problem, but the SMCp methods are expensive in computation and communication. Even worse, most SMCp methods hardly continue to work if some participants disconnect.

关键词： Information Systems and Communication Service

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糖磷酸酶的挖掘及其酶学性质研究

生物技术通报 2024年第7期40卷 299-306页

作者：乔烨张楠杨建花张翠英朱蕾蕾天津科技大学生物工程学院天津300457 中国科学院天津工业生物技术研究所低碳合成工程生物学重点实验室天津300308

【目的】在以淀粉或糊精为底物合成具有高附加值的单糖的多酶级联反应中,利用糖磷酸酶催化发生不可逆的脱磷反应可以高效拉动整个反应朝产物生成的方向进行。本研究旨在挖掘新的糖磷酸酶并对酶学性质进行鉴定。【方法】通过基因挖掘的... 详细信息

【目的】在以淀粉或糊精为底物合成具有高附加值的单糖的多酶级联反应中,利用糖磷酸酶催化发生不可逆的脱磷反应可以高效拉动整个反应朝产物生成的方向进行。本研究旨在挖掘新的糖磷酸酶并对酶学性质进行鉴定。【方法】通过基因挖掘的手段筛选得到一种来源于嗜热菌Thermoproteus ***_19的未知功能的基因Tspase具有糖磷酸酶活性,在*** BL21(DE3)中实现异源可溶性表达及纯化,进一步对其酶学性质进行表征。【结果】最终确定糖磷酸酶Tspase的最适反应温度是70℃,T_(m)值为(80.3±1.3)℃,最适反应pH为4,金属离子Mg^(2+)对Tspase有较强的促进作用。针对底物为塔格糖6磷酸盐的动力学常数K_(m)为(2.40±0.98)mmol/L,催化常数k_(cat)为(102.50±8.60)min^(-1)。将Tspase应用于体外多酶合成体系中,以10 g/L麦芽糊精为底物,一锅法生产D-塔格糖,反应平衡体系中D-塔格糖产量为(4.26±0.03)g/L,转化率可达42.6%±0.3%。【结论】Tspase不仅具有较好的热稳定性和活性,在体外多酶合成体系中也具有优势,这些特征在以后的理论研究及工业生产中具有一定的科学价值。

关键词：糖磷酸酶酶学特性热稳定性基因挖掘

peroxisome proliferator-activated receptors gama ameliorates liver fibrosis in non-alcoholic fatty liver disease by inhibiting TGF-β/Smad signaling activation

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Frigid Zone Medicine 2024年第1期4卷 12-22页

作者： Qingwei zhang Wenjie Zhao Zeqi Sun Xinxin Dong Liwei zhu Zhen zhang Ximing Chen Yingying Hu Menghan Du Jiamin Li Yong zhang Department of pharmacology College of Pharmacyand Department of Cardiologythe Second Affiliated HospitalHarbin Medical UniversityHarbin 150081China Department of pharmacology College of PharmacyHarbin Medical UniversityHarbin 150081China The State Key Laboratory of Frigid Zone Cardiovascular Diseases(SKLFZCD) and the Key Laboratory of Cardiovascular Medicine ResearchMinistry of EducationHarbin 150081China Research Unit of Noninfectious Chronic Diseases in Frigid Zone Chinese Academy of Medical Sciences2019RU070Harbin 150081China

Background:Nonalcoholic fatty liver disease(NAFLD)is a chronic condition characterized by a progressive decline in liver function,leading to disruptions in liver integrity and metabolic function,resulting in lipid deposition and excessive accumulation of extracellular matrix(ECM).The pathogenesis of NAFLD is complex and not yet fully understood,contributing to the absence of specific therapeutic *** proliferator-activated receptor gamma(ppARγ)is a ligand-activated transcription factor pivotal in regulating lipid and glucose ***,the impacts of ppARγon NAFLD remains insufficiently ***,this study aimed to investigate the role of ppARγin NAFLD and its underlying molecular ***:chemical detection kits were utilized to quantify collagen content,alanine aminotransferase(ALT),and aspartate aminotransferase(AST)level *** real-time polymerase chain reaction(qRT-pCR)was employed to assess alterations in extracellular matrix-related genes and inflammatory response genes in liver tissue and HepG2 cells,while western blotting was conducted to analyze the levels of both ppARγand the TGF-β/Smad signaling ***:Our findings unveiled significantly reduced ppARγexpression in a rat model of NAFLD,leading to subsequent activation of the TGF-β/Smad signaling ***,ppARγactivation effectively mitigated NAFLD progression by inhibiting inflammation and fibrosis-related gene expression and collagen *** a cellular level,ppARγactivation was found to inhibit the expression of extracellular matrix-related genes such as matrix metalloproteinase 2(MMp2)and matrix metalloproteinase 9(MMp9),along with inflammatory response genes interleukin(IL)-1βand ***,ppARγactivation led to a significant decrease in the levels of ALT and *** the molecular level,ppARγnotably down-regulated the TGF-β/Smad signaling pathway,which is known to promote liver ***:These groundbre

关键词： NAFLD ppARγ TGF-β/Smad liver fibrosis

Determination of anions in lithium-ion batteries electrolyte by ion chromatography

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Chinese chemical Letters 2016年第6期27卷 864-866页

作者： Bin-He zhu Cheng-zhu Ni Na-Ni wang Xun-Yan Zhao wei-Qiang Guo pei-Min zhang Jia-Jie zhang Su-Qing Chen wei-De Lv Yan zhu Department of Chemistry Xixi Campus Zhejiang University Hangzhou 310028 China Department of Medicine Zhejiang Academy of Traditional Chinese Medicine Hangzhou 310007 China School of pharmaceutical and chemical engineering Taizhou University Taizhou 317000 China Hangzhou Vocational & Technical college Hangzhou 310018 China

A sensitive and accurate method based on ion chromatography was established for determination of five lithium salts in lithium-ion batteries electrolytes. Chromatographic analyses were carried out on an anion exchange column at flow rate of 1 m L/min. Under the optimal conditions, five target anions（BF4^-,pF6^-, TFSI^-, BOB^-and FSI^-） exhibited satisfactory linearity with a correlation coefficient of 0.9996. The relative standard derivations of the target anions were less than less than 0.94%（n = 7）. The limits of detections were in the range of 0.068–0.29 mg/L with average spiked recoveries ranging from 96.8% to 105.1%.

关键词： Ion chromatography Lithium salts Lithium-ion batteries electrolyte

Defective Ni_(3)S_(2)nanowires as highly active electrocatalysts for ethanol oxidative upgrading

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Nano Research 2022年第4期15卷 2987-2993页

作者： Yufeng zhang wei zhu Jinjie Fang Zhiyuan Xu Yanrong Xue Di Liu Rui Sui Qingqing Lv Xuerui Liu Yongsheng wang wei Chen Zhongbin zhuang State Key Lab of Organic-Inorganic Composites and beijing Advanced Innovation Center for Soft Matter science and engineering Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Carbon Materials of Zhejiang province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China beijing Key Laboratory of Energy Environmental Catalysis Beijing University of Chemical TechnologyBeijing 100029China

Electrochemical upgrading of biomass ethanol to value-added chemicals is promising for sustainable ***,we synthesize defective Ni_(3)S_(2) nanowires(NWs),which show high activity towards electrochemical oxidation of ethanol to *** Ni_(3)S_(2) NWs are formed by the oriented attachment mechanism,and rich defects are introduced during the growth.A low onset potential of 1.31 V and high mass activity of 8,716 mA·mgNi^(-1) at 1.5 V are achieved using the synthesized Ni_(3)S_(2) NWs toward the ethanol electro-oxidation,which are better than the Ni(OH)2 NWs and the Ni_(3)S_(2) nanoparticles(Nps).And the selectivity for the acetate generation is ca.99%.The high activity of Ni_(3)S_(2) NWs is attributed to the easier oxidation of Ni(II)to the catalytically active Ni(III)species with the promotion from S component and rich *** results demonstrate that the defective NWs can be synthesized by the oriented attachment method and the defective Ni_(3)S_(2) NWs structure as the efficient nonnoble metal electrocatalysts for oxidative upgrading of ethanol.

关键词： nickel sulfide electrocatalyst ethanol oxidation defects oriented attachment