检索结果-南通市图书馆

Nano Research 2024年第5期17卷 3879-3887页

作者： Yuting Chen Tian Meng Zhicai Xing Yueying Yan Yang Yang Bohan yao Dewen Wang Xiurong Yang State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Developing efficient ph-universal hydrogen evolution reaction(hER)catalysts is critical in the field of water electrolysis,however,which is severely hampered by the sluggish kinetics in alkaline ***,a ruthenium(Ru)incorporation induced vacancy engineering strategy is firstly proposed to precisely construct oxygen vacancy(V_(O))-riched cobalt-ruthenium metaphosphate(CRPO)for high-efficiency ph-universal *** V_(O) modifies the electronic structure,improves the superficial hydrophilic and gas spillover capacity,it also reduces the coordination number of Ru atoms and regulates the coordination *** calculations indicate that Ru tends to adsorb h_(2)O and h^(*),whereas V_(O) tends to adsorb Oh^(-),which greatly promotes the h_(2)O adsorption and the dissociation of hO-h ***,CRPO-2 exhibits remarkable hER performance,the mass activity is about 18.34,21.73,and 38.07 times higher than that of Pt/C in acidic,neutral,and alkaline media,respectively,at the same time maintain excellent *** findings may pave a new avenue for the rational design of electrocatalysts toward ph-universal water electrolysis.

关键词： cobalt metaphosphate ph-universal hydrogen evolution reaction(hER) vacancy engineering low-coordination atoms oxygen vacancy

TIP60 acetylation of Bub1 regulates centromeric h2AT120 phosphorylation for faithful chromosome segregation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第9期67卷 1957-1969页

作者： Mengjie Sun Biying Yang Guangwei Xin yao Wang Jia Luo Qing Jiang Chuanmao Zhang The Academy for Cell and Life health Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming 650500China The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education College of Life SciencesPeking UniversityBeijing 100871China

Proper function of the centromeres ensures correct attachment of kinetochores to spindle microtubules and faithful chromosome segregation in *** in the integrity and function of centromeres can result in chromosome missegregation and genomic ***1 is essential for the mitotic centromere dynamics,yet the underlying molecular mechanisms remain largely ***,we demonstrate that TIP60 acetylates Bub1 at K424 and K431 on kinetochores in early *** acetylation increases the kinase activity of Bub1 to phosphorylate centromeric histone h2A at T120(h2Ap T120),which recruits Aurora B and Shugoshin 1(Sgo1)to regulate centromere integrity,protect centromeric cohesion,and ensure the subsequent faithful chromosome *** of the nonacetylated Bub1 mutant reduces its kinase activity,decreases the level of h2Ap T120,and disrupts the recruitment of centromere proteins and chromosome congression,leading to genomic instability of daughter *** cells exit mitosis,hDAC1-regulated deacetylation of Bub1 decreases h2Ap T120 levels and thereby promotes the departure of centromeric CPC and Sgo1,ensuring timely centromeres ***,our results reveal a molecular mechanism by which the acetylation and deacetylation cycle of Bub1 modulates the phosphorylation of h2A at T120 for recruitment of Aurora B and Sgo1 to the centromeres,ensuring faithful chromosome segregation during mitosis.

关键词： acetylation Bub1 TIP60 h2ApT120 chromosome segregation

Mutual antagonism of mouse-adaptation mutations in hA and PA proteins on h9N2 virus replication

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2024年第1期39卷 56-70页

作者： Liping Ma huabin Zheng Xianliang Ke Rui Gui Zhongzi yao Jiasong Xiong Quanjiao Chen CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyChinese Academy of SciencesWuhan430207China Center for Biosafety Mega-Science Wuhan Institute of VirologyChinese Academy of SciencesWuhan430207China hubei Jiangxia Laboratory Wuhan430207China University of Chinese Academy of Sciences Beijing100049China

Avian h9N2 viruses have wide host range among the influenza A ***,knowledge of h9N2 mammalian adaptation is *** explore the molecular basis of the adaptation to mammals,we performed serial lung passaging of the h9N2 strain A/chicken/hunan/8.27 YYGK3W3-OC/2018(3W3)in mice and identified six mutations in the hemagglutinin(hA)and polymerase acidic(PA)*** L226Q,T511I,and A528V of hA were responsible for enhanced pathogenicity and viral replication in mice;notably,hA-L226Q was the key *** T97I,I545V,and S594G of PA contributed to enhanced polymerase activity in mammalian cells and increased viral replication levels in vitro and in ***-T97I increased viral polymerase activity by accelerating the viral polymerase complex *** findings revealed that the viral replication was affected by the presence of PA-97I and/or PA-545V in combination with a triple-point hA ***,the double-and triple-point PA mutations demonstrated antagonistic effect on viral replication when combined with ***,any combination of PA mutations,along with double-point hA mutations,resulted in antagonistic effect on viral *** also observed antagonism in viral replication between PA-545V and PA-97I,as well as between hA-528V and *** findings demonstrated that several antagonistic mutations in hA and PA proteins affect viral replication,which may contribute to the h9N2 virus adaptation to mice and mammalian *** findings can potentially contribute to the monitoring of h9N2 field strains for assessing their potential risk in mammals.

关键词： Influenza Avirus(IAV) h9N2 hA PA Antagonism Mouse adaptation

Key technology and application of AB_(2) hydrogen storage alloy in fuel cell hydrogen supply system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Reports(Energy) 2024年第1期4卷 113-122页

作者： Ming yao Jianguang Yuan Bao Zhang Youhua Yan Shaoxiong Zhou Ying Wu School of Energy Power and Machinery Engineering North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China Institute of Energy Power Innovation North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China Jiangsu JITRI Advanced Energy&Materials Research Institute Co. LtdNo.5 ChongyinanluXinbei DistrictChangzhou 213000China

At present,there is limited research on the application of fuel cell power generation system technology using solid hydrogen storage materials,especially in hydrogen-assisted *** the disadvantages of low hydrogen storage capacity and poor kinetics of hydrogen storage materials,our primary focus is to achieve smooth hydrogen ab-/desorption over a wide temperature range to meet the requirements of fuel cells and their integrated power generation *** this paper,the Ti_(0.9)Zr_(0.1)Mn_(1.45)V_(0.4)Fe_(0.15) hydrogen storage alloy was successfully prepared by arc *** maximum hydrogen storage capacity reaches 1.89 wt% at 318 *** alloy has the capability to absorb 90% of hydrogen storage capacity within 50 s at 7 MPa and release 90% of hydrogen within 220 *** Multiphysics 6.0 software was used to simulate the hydrogen ab-/desorption processes of the *** flow rate of cooling water during hydrogen absorption varied in a gradient of(0.02 t x)m s^(-1)(x=0,0.02,0.04,0.06,0.08,0.1,0.12).Cooling water flow rate is positively correlated with the hydrogen absorption rate but negatively correlated with the *** the cooling rate is 0.06 m s^(-1),both simulation and experimentation have shown that the hydrogen storage tank is capable of steady hydrogen desorption for over 6 h at a flow rate of 2 L min^(-1).Based on the above conclusions,we have successfully developed a hydrogen-assisted two-wheeler with a range of 80 km and achieved regional demonstration operations in Changzhou and *** paper highlights the achievements of our team in the technological development of fuel cell power generation systems using solid hydrogen storage materials as hydrogen storage carriers and their application in twowheelers in recent years.

关键词： AB_(2)hydrogen storage alloy hydrogen storage tanks Simulation hydrogen-electric coupling system Power-assisted two-wheelers

Methyl functionalization of trimesic acid in copper-based metal-organic framework for ammonia colorimetric sensing at high relative humidity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第6期35卷 211-215页

作者： Yuxin Wang Zhengxuan Song Yutao Liu Yang Chen Jinping Li Libo Li Jia yao College of Chemical Engineering and Technology Shanxi Key Laboratory of Gas Energy Efficient and Clean UtilizationTaiyuan University of TechnologyTaiyuan 030024China Department of Gastroenterology Shanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalThird Hospital of Shanxi Medical UniversityTaiyuan 030024China

Exhaled ammonia(Nh_(3))can be used as a crucial biomarker of kidney and liver ***,the high humidity in the detection conditions remains a challenge for accurate detection by gas ***,a copper-based metal-organic framework(Ch_(3)-Cu-BTC)with methyl(Ch_(3)^(-))functionalization of trimesic acid was synthesized for Nh_(3) colorimetric *** Ch_(3)-Cu-BTC exhibited a strong response for 5 ppm Nh_(3) with high selectivity under high relative humidity(75%Rh).Density functional theory(DFT)simulations indicated that the Nh_(3) molecules interacted more strongly with Ch_(3)-Cu-BTC than h_(2)O molecules did,and the corresponding color switching was attributed to the lone-pair electron in Nh_(3) changing the coordination environment of Cu^(2+)ions,leading to an obviously visible color switching response from ruby green to *** on the tailor-made pore chemistry,the precise detection of trace amounts of Nh_(3) in exhaled air was realized through functionalized MOF *** strategy used in this study not only offers a new pathway for the rapid detection of low concentration Nh_(3) under humid conditions,but also shows a method for early respiration diagnosis of kidney and liver diseases.

关键词： Metal-organic framework Ammonia sensing Naked-eye color switching high humidity Respiration diagnosis

Exploring the Cation Regulation Mechanism for Interfacial Water Involved in the hydrogen Evolution Reaction by In Situ Raman Spectroscopy

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第3期16卷 303-312页

作者： Xueqiu You Dongao Zhang Xia‑Guang Zhang Xiangyu Li Jing‑hua Tian yao‑hui Wang Jian‑Feng Li School of Ocean Information Engineering Fujian Provincial Key Laboratory of Oceanic Information Perception and Intelligent ProcessingJimei UniversityXiamen 361021People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces MOE Key Laboratory of Spectrochemical Analysis and InstrumentationiChEMCollege of Chemistry and Chemical EngineeringCollege of MaterialsCollege of EnergyXiamen UniversityXiamen 361005People’s Republic of China Key Laboratory of Green Chemical Media and Reactions Ministry of EducationCollaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsCollege of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007People’s Republic of China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005People’s Republic of China

Interfacial water molecules are the most important participants in the hydrogen evolution reaction(hER).hence,understanding the behavior and role that interfacial water plays will ultimately reveal the hER ***,investigating interfacial water is extremely challenging owing to the interference caused by bulk water molecules and complexity of the interfacial ***,the behaviors of interfacial water in different cationic electrolytes on Pd surfaces were investigated by the electrochemistry,in situ core-shell nanostructure enhanced Raman spectroscopy and theoretical simulation *** spectral evidence reveals a red shift in the frequency and a decrease in the intensity of interfacial water as the potential is shifted in the positively *** comparing the different cation electrolyte systems at a given potential,the frequency of the interfacial water peak increases in the specified order:Li+he structure of interfacial water was optimized by adjusting the radius,valence,and concentration of cation to form the two-h down *** unique interfacial water structure will improve the charge transfer efficiency between the water and electrode further enhancing the hER ***,local cation tuning strategies can be used to improve the hER performance by optimizing the interfacial water structure.

关键词： In situ Raman Interfacial water hydrogen evolution reaction Cations

hyperbranched polyamidoamine protective layer with phosphate and carboxyl groups for dendrite-free Zn metal anodes

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第10期35卷 495-499页

作者： Xinxiu Yan Xizhe huang Yangyang Liu Weishang Jia hualin Chen Qi yao Tao Chen Key Laboratory of General Chemistry of the National Ethnic Afairs Commission School of Chemistry and EnvironmentSouthwest Minzu UniversityChengdu 610041China Institute of smart city and inteligent transportation Southwest Jiaotong UniversityChengdu 611756China School of Materials Science and Engineering Guangdong University of Petrochemical TechnologyMaoming 525000China

Zinc metal is regarded as one of the most promising anodes for Zn-based batteries in next-generation energy storage ***,the dendrite growth and interfacial corrosion lead to poor reversibility and cycle life of Zn ***,we synthesize a 2-phosphate-1,2,4-butane tricarboxylic acid modified hyperbranched polyamidoamine containing rich terminal groups of phosphate and carboxyl(hPC)as modified layer for the Zn ***,the in situ acid-etching promotes the exposure of(002)Zn plane and the generated salt-polymer complexes could be adhered to the Zn anodes *** greatly favors the uniform deposition of Zn and inhibits interfacial ***,stable hPC@Zn anode plating/stripping for over 1200 h at a high areal capacity of 4 mAh/cm^(2)and a current density of 4 m A/cm^(2)is *** study provides a new avenue of hyperbranched polymer in interfacial design for highly reversible and stable Zn metal anodes.

关键词： Zn anode Znmetal batteries Surface chemistry Functional groups hyperbranched polyamidoamine

A high-performance lithium anode based on N-doped composite graphene

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 1030-1036页

作者： Can Jiao hao-Bo Sun Li Zhang Shang-Qian Zhao Guo-yao Pang Chun-Rong Zhao Shi-Gang Lu General Research Institute for Nonferrous Metals Beijing100088China China Automotive Battery Research Institute Co.Ltd Beijing101407China

Lithium(Li)metal is the most promising electrode for next-gene ration rechargeable *** order to push the commercialization of the lithium metal batteries,a kind of nitrogen(N)-doped composite graphene(NCG)adopted as the Li plating host was prepared to regulate Li metal nucleation and suppress dendrite ***,a new kind of sandwich-type composite lithium metal(STCL)electrode was developed to improve its *** STCL electrode can be used as convenient as a piece of Li foil but no dendrite *** a symmetric battery,the STCL electrode cycled for more than 4500 h with the overpotential of less than 40 *** due to the creative design,the STCL promises the Li-S battery with a prolonged cycling lifespan.

关键词： Lithium metal anode Lithiophilic N-doped composite graphene Sandwich-type composite lithium metal electrode

Peroxidase-like active Cu-ZIF-8 with rich copper(I)-nitrogen sites for excellent antibacterial performances toward drug-resistant bacteria

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第8期17卷 7427-7435页

作者： Xiaoze Wang hui Wang Jingkun Zhang Ning han Wenjun Ma Donghai Zhang Mingshui yao Xianliang Wang Yunfa Chen State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of the Chinese Academy of Sciences Beijing 100049China Laboratory of Theoretical and Computational Nanoscience CAS Key Laboratory of Nanosystem and Hierarchial FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China China CDC Key Laboratory of Environment and Population health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing 100021China

Bacterial pathogens pose a serious threat to human health,and there is an urgent need to develop highly effective antibacterial materials to eliminate the increasingly serious contamination of drug-resistant ***,a Cu-doped ZIF-8 particle with unsaturated copper exhibits high peroxidase-like activity.99.998%antibacterial efficiency against *** can be achieved for 30 min at a low concentration of 50μg·mL^(−1),as well as complete sterilization against ***(up to 8 log).99.999%antibacterial efficiency against Methicillin-resistant Staphylococcus aureus can be achieved,performing orders of magnitude higher than *** mechanism shows that the unsaturated Cu-Nx sites are enzyme-like active centers,which could promote the consumption of bacteria reducing substances by h_(2)O_(2),and the generated*Oh further aggravates bacterial oxidative stress and membrane *** importantly,the oxidation activity of adsorbed oxygen species on Cu-ZIF-8 is enhanced by charge transfer and structural changes between the ligand and copper center like natural ***-doped ZIF-8 with peroxidase-like activity shows great potential in antibacterial application and the revealed catalytic mechanism is helpful for understanding the high antibacterial activity of nanoparticles with Cu-Nx sites.

关键词： Cu-doped ZIF-8 peroxidase-like reactive oxygen species(ROS) catalytic mechanism antibacterial activity

Metal oxide ion gated transistors based sensors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第4期67卷 1040-1060页

作者： LI Yang yao Yu WANG LeLe WANG LiWei PANG YunCong LUO ZhongZhong ARUNPRABAhARAN Subramanian LIU ShuJuan ZhAO Qiang College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China Department of Chemical Engineering Polytechnique MontréalMontréalQuébec H3C3J7Canada

Metal oxide ion-gated transistors(MOIGTs)have garnered significant attention within the sensing domain due to their potential for achieving heightened sensitivity while consuming minimal energy across diverse *** harnessing the advantageous combination of metal oxides'high carrier mobility and facile surface customization,coupled with the potent signal amplification capabilities of ion-gated transistors,MOIGTs offer a promising avenue for discerning biomolecules,overseeing chemical reactions,p h levels,as well as facilitating gas or light *** the past few decades,the MOIGT field has made remarkable strides in refining device physics,enhancing material properties,showcasing robust sensing capabilities,and broadening its application *** advancements have simultaneously unveiled new challenges and opportunities,necessitating interdisciplinary expertise to fully unlock the commercial potential of *** this comprehensive review,we offer a snapshot of this swiftly evolving technology,delve into its current applications,and provide insightful recommendations for future directions in the coming decade.

关键词： sensors ion gated transistors metal oxide semiconductors biosensors chemosensors ph sensors