检索结果-南通市图书馆

Nano Research 2024年第8期17卷 7136-7143页

作者： Lijie ma Xiaolin Wang Xiang Chen Jianbin Gao yiwen Wang yuehai Song yaran Zhao Shizhe Gao Lin Li Jianchao Sun School of Environment and material Engineering Yantai UniversityYantai 264005China College of Textile Science and Engineering(International Institute of Silk) Zhejiang Sci-Tech UniversityHangzhou 310018China BNU-HKUST Laboratory of Green Innovation Advanced Institute of Natural SciencesBeijing Normal UniversityZhuhai 519087China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China

Vanadium dioxide(VO_(2)) with the advantages of high theoretical capacity and tunnel structure has attracted considerable promising candidates for aqueous zinc-ion ***,the intrinsic low electronic conductivity of VO_(2) results in an unsatisfactory electrochemical ***,a flower-like VO_(2)/carbon nanotubes(CNTs)composite was obtained by a facile hydrothermal *** unique flower-like morphology shortens the ion transport length and facilitates electrolyte ***,the CNT conductive networks is in favor of fast electron transfer.A highly reversible zinc storage mechanism was revealed by ex-situ X-ray diffraction and X-ray photoelectron *** a result,the VO_(2)/CNTs cathode exhibits a high reversible capacity(410 mah·g^(−1)),superior rate performance(305 mah·g^(−1)at 5 A·g^(−1)),and excellent cycling stability(a reversible capacity of 221 mah·g^(−1)was maintained even after 2000 cycles).This work provides a guide for the design of high-performance cathode materials for aqueous zinc metal batteries.

关键词： VO_(2)/carbon nanotubes morphology engineering zinc metal batteries cathode materials conductive networks

Two-dimensional Cr_(2)Cl_(3)S_(3)Janus magnetic semiconductor with large magnetic exchange interaction and high-T_(C)

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 Physics B 2024年第9期33卷 481-485页

作者： Lei Fu Shasha Li Xiangyan Bo Sai ma Feng Li yong Pu School of Science&New Energy Technology Engineering Laboratory of Jiangsu Provence Nanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023China

The two-dimensional(2D)Janus monolayers are promising in spintronic device application due to their enhanced magnetic couplings and Curie *** der Waals CrCl_(3) monolayer has been experimentally proved to have an in-plane magnetic easy axis and a low Curie temperature of 17 K,which will limit its application in spintronic *** this work,we propose a new Janus monolayer Cr_(2)Cl_(3)S_(3) based on the first principles *** phonon dispersion and elastic constants confirm that Janus monolayer Cr_(2)Cl_(3)S_(3) is dynamically and mechanically *** Monte Carlo simulation results based on magnetic exchange constants reveal that Janus monolayer Cr_(2)Cl_(3)S_(3) is an intrinsic ferromagnetic semiconductor with TC of 180 K,which is much higher than that of CrCl_(3) due to the enhanced ferromagnetic coupling caused by S ***,the magnetic easy axis of Janus Cr_(2)Cl_(3)S_(3) can be tuned to the perpendicular direction with a large magnetic anisotropy energy(maE)of 142eV/***,the effect of biaxial strain on the magnetic property of Janus monolayer Cr_(2)Cl_(3)S_(3) is *** is found that the Curie temperature is more robust under tensile *** work indicates that the Janus monolayer Cr_(2)Cl_(3)S_(3) presents increased Curie temperature and out-of-plane magnetic easy axis,suggesting greater application potential in 2D spintronic devices.

关键词： first-principles calculations 2D materials magnetic properties ferromagentic semiconductor

Diversification of interfaces triggered hydrogen storage properties enhancement

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2324-2330页

作者： Jia-Xin Zhang Xin Ding Rui-Run Chen Xiang-Feng ma Wen-Chao Cao yong Zhang Jing-Jie Guo National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

Dual effects of grain refinement and alloying are achieved and the mechanism of"diverse interfaces reinforcement"for hydrogen storage Mg alloys is first *** interface reinforced Mg-y-Zn-Al alloy for hydrogen storage is *** work figures out that the adventurous Al-rich phase exhibits an ordered face-centered cubic(FCC)structure with composition of(31±2)at%y-(28±1)at%Zn-(41±3)at%Al,i.e.,y_(3)Zn_(3)Al_(4),and an incoherent interface between y3Zn3Al4phase and Mg substrate is observed.

关键词： hydrogen alloying alloy

Revealing precipitation behavior and mechanical response of wire-arc directed energy deposited Mg-Gd-y-Zr alloy by tailoring aging procedures

在线全文

学校读者我要写书评

暂无评论

International Journal of Extreme manufacturing 2024年第4期6卷 176-200页

作者： Xinzhi Li Xuewei Fang Zhiyan Zhang Shahid Ghafoor Ruikai Chen yi Liu Kexin Tang Kai Li Minghua ma Jiahao Shang Ke Huang State Key Laboratory for manufacturing Systems Engineering School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049 ShaanxiPeople's Republic of China

Mg-Gd-y-Zr alloy,as a typical magnesium rare-earth(Mg-RE)alloy,is gaining popularity in the advanced equipment manufacturing fields owing to its noticeable age-hardening properties and high specific ***,it is extremely challenging to prepare wrought components with large dimensions and complex shapes because of the poor room-temperature processability of Mg-Gd-y-Zr ***,we report a wire-arc directed energy deposited(DED)Mg-10.45Gd-2.27y-0.52Zr(wt.%,GW102K)alloy with high RE content presenting a prominent combination of strength and ductility,realized by tailored nanoprecipitates through an optimized heat treatment ***,the solution-treated sample exhibits excellent ductility with an elongation(EL)of(14.6±0.1)%,while the aging-treated sample at 200°C for 58 h achieves an ultra-high ultimate tensile strength(UTS)of(371±1.5)***,the aging-treated sample at 250°C for 16 h attains a good strength-ductility synergy with a UTS of(316±2.1)MPa and a EL of(8.5±0.1)%.Particularly,the evolution mechanisms of precipitation response induced by various aging parameters and deformation behavior caused by nanoprecipitates type were also systematically *** excellent ductility resulted from coordinating localized strains facilitated by active slip *** the ultra-high strength should be ascribed to the dense nano-β'hampering dislocation ***,the shearable nano-β1 contributed to the good strength-ductility *** work thus offers insightful understanding into the nanoprecipitates manipulation and performance tailoring for the wire-arc DED preparation of large-sized Mg-Gd-y-Zr components with complex geometries.

关键词： wire-arc directed energy deposition Mg-Gd-y-Zr alloy precipitation response prominent strength-ductilitycombination deformation mechanism

Within-host models unravelling the dynamics of dengue reinfections

在线全文

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2024年第2期9卷 458-473页

作者： Vizda Anam Bruno V.Guerrero Akhil Kumar Srivastav Nico Stollenwerk maíra Aguiar Basque Center for Applied mathematics Basque CountrySpain Department of mathematics and Statistics University of Basque CountryBasque CountrySpain Ikerbasque Basque Foundation for ScienceBasque CountrySpain

Caused by four serotypes,dengue fever is a major public health concern *** modeling efforts have mostly focused on primary and heterologous secondary infections,assuming that lifelong immunity prevents reinfections by the same ***,recent findings challenge this assumption,prompting a reevaluation of dengue immunity *** this study,we develop a within-host modeling framework to explore different scenarios of dengue *** previous studies,we go beyond a deterministic framework,considering individual immunological *** deterministic and stochastic models are calibrated using empirical data on viral load and antibody(IgM and IgG)concentrations for all dengue serotypes,incorporating confidence intervals derived from stochastic *** good agreement between the mean of the stochastic realizations and the mean field solution for each model,our approach not only successfully captures primary and heterologous secondary infection dynamics facilitated by antibody-dependent enhancement(ADE)but also provides,for the first time,insights into homotypic reinfection *** study discusses the relevance of homotypic reinfections in dengue transmission at the population level,highlighting potential implications for disease prevention and control strategies.

关键词： infections immunity prevention

Identification of 3-ketocapnine reductase activity within the human microbiota

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

mLife 2024年第2期3卷 307-316页

作者： Xiaotong Wu Lukuan Hou Haili Zhang yi ma Jufang Wang Mingwei Cai Xiaoyu Tang School of Biology and Biological Engineering South China University of TechnologyGuangzhouChina Institute of Chemical Biology Shenzhen Bay LaboratoryShenzhenChina College of Chemistry and Pharmacy Northwest A&F UniversityYanglingChina

The microbial synthesis of sulfonolipids within the human body is likely involved in maintaining human health or causing ***,the enzymes responsible for their biosynthesis remain largely *** this study,we identified and verified the role of 3-ketocapnine reductase,the third-step enzyme,in the four-step conversion of L-phosphoserine into sulfobacin B both in vivo and in *** finding builds upon our previous research into sulfonolipid biosynthesis,which focused on the vaginal bacterium Chryseobacterium gleum DSM 16776 and the gut bacterium Alistipes finegoldii DSM *** comprehensive gene mapping,we demonstrate the widespread presence of potential sulfonolipid biosynthetic genes across diverse bacterial species inhabiting various regions of the human *** findings shed light on the prevalence of sulfonolipid-like metabolites within the human microbiota,suggesting a potential role for these lipid molecules in influencing the intricate biointeractions within the complex microbial ecosystem of the human body.

关键词： 3-ketocapnine reductase capnines human microbiota sulfonolipids

Inversely engineered metasurfaces for independent manipulation of transmitted and reflected light fields

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(Physics,Mechanics & Astronomy) 2024年第7期67卷 97-106页

作者： yongjian Liu yu Luo Fei Zhang Mingbo Pu Hanlin Bao Mingfeng Xu yinghui Guo Lanting Li Xiong Li Xiaoliang ma Xiangang Luo National Key Laboratory of Optical Field manipulation Science and Technology Chinese Academy of SciencesChengdu 610209China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China College of materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Tianfu Xinglong Lake Laboratory Chengdu 610299China

Independent manipulation of transmitted and reflected light fields is a key technology for the realization of multifunctional optical applications,which can be implemented based on multilayered plasmonic or supercell subwavelength ***,the former is not suitable for the optical bands,while the latter is insufficient in generating large phase ***,an adjoint-optimization-based inverse design methodology is proposed,which utilizes the polarization-selective local interference between individual meta-atoms and enables monolayer dielectric metasurfaces to decouple the wavefront of transmitted and reflected optical ***,this methodology serves to mitigate the aperiodic electromagnetic crosstalk inherent between adjacent meta-atoms,consequently leading to a significant enhancement in the performance of *** analyzed the physical mechanism of adjoint optimization and proposed the concept of phase factors,highlighting their importance in the rapid inverse design of meta-devices—an aspect often overlooked in previous *** demonstrate the feasibility and robustness of our method,we optimize monolayer metasurfaces with different initial *** devices efficiently focus and deflect x-linearly and y-linearly polarized incident light in transmission and reflection spaces,***,this methodology holds immense potential for designing multifunctional,high-performing metasurfaces that meet multiple constraints,opening up broad prospects for applications.

关键词： full-space metasurfaces adjoint optimization inverse design

Strengthening strategy for high-performance friction stir lap welded joints based on 5083 Al alloy

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and materials 2024年第11期31卷 2498-2507页

作者： yujia Shen Jijie Wang Beibei Wang Peng Xue Fengchao Liu Dingrui Ni Bolv Xiao Zongyi ma College of material Science and Engineering Shenyang Aerospace UniversityShenyang 110136China Shi-changxu Innovation Center for Advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China CAS Key Laboratory of Nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Binzhou Institute of Technology Shandong Key Laboratory of Advanced Aluminium Materials and TechnologyWeiqiao-UCAS Science and Technology ParkBinzhou 256606China Centre of Excellence for Advanced materials Dongguan 523808China

During aircraft,ship,and automobile manufacturing,lap structures are frequently produced among Al alloy skins,wall panels,and *** occurrence of welding defects severely decreases mechanical properties during friction stir lap welding(FSLW).This study focuses on investigating the effects of rotation rate,multipass welding,and cooling methods on lap defect formation,microstructural evolution,and mechanical *** defects were eliminated by decreasing welding speed,applying two-pass FLSW with a small welding tool,and introducing additional water cooling,thus leading to a remarkable increase in effective sheet thickness and lap *** above strategy yielded defect-free joints with an ultrafine-grained microstructure and increased tensile shear force from 298 to 551 N/*** fracture behavior of FSLW joints was systematically studied,and a fracture factor of lap joints was proposed to predict their fracture *** reducing the rotation rate,using two-pass welding,and employing additional water cooling strategies,an enlarged,strengthened,and defect-free lap zone with refined ultrafine grains was achieved with a quality comparable to that of lap welds based on 7xxx Al ***,this study provides a valuable FSLW method for eliminating hook defects and improving joint performance.

关键词： friction stir lap welding defect control microstructure fracture mechanisms mechanical properties

Protein-activated atomic layer deposition for robust crude-oil-repellent hierarchical nano-armored membranes

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第2期69卷 218-226页

作者： Xiaobin yang Pan Sun yajie Wen Anil U.mane Jeffrey W.Elam Jun ma Shaomin Liu Seth B.Darling Lu Shao MIIT Key Laboratory of Critical materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Chemical Sciences and Engineering Division Argonne National LaboratoryLemont IL 60439USA Applied materials Division Argonne National LaboratoryLemont IL 60439USA Advanced materials for Energy-Water Systems Energy Frontier Research Center Argonne National LaboratoryLemont IL 60439USA Pritzker School of Molecular Engineering University of ChicagoChicago IL 60637USA Department of Physics University of Ilinois at ChicagoChicago IL 60607USA School of Environment Harbin Institute of TechnologyHarbin 150090China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerth WA 6845Australia

Atomic layer deposition(ALD)offers unique capabilities to fabricate atomically engineered porous materials with precise pore tuning and multi-functionalization for diverse applications like advanced membrane separations towards sustainable energy-water ***,current ALD technique is inhibited on most non-polar polymeric membranes due to lack of accessible nucleation ***,we report a facile method to efficiently promote ALD coating on hydrophobic surface of polymeric membranes via novel protein activation/*** a proof of concept,TiO2 ALD-coated membranes activated by bovine serum albumin exhibit remarkable superhydrophilicity,ultralow underwater crude oil adhesion,and robust tolerance to rigorous environments including acid,alkali,saline,and *** importantly,excellent cyclable crude oil-in-water emulsion separation performance can be *** mechanism for activation/sensitization is rooted in reactivity for a particular set of amino ***,the universality of protein-sensitized ALD is demonstrated using common egg white,promising numerous potential usages in biomedical engineering,environmental remediation,lowcarbon manufacturing,catalysis,and beyond.

关键词： Membrane separation Atomic layer deposition Water treatment Antifouling

Epigenetic regulation of SARS-Cov-2 spike protein modulates cellular viability and nascent RNA transcription in neuronal cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第2期11卷 535-538页

作者： Xi Kong Peng Lu Jinyue Zhang Zheng Bao Chenghao Kuang Bingqing Xie Jianhua Peng Ning ma yong Jiang Shigang yin Laboratory of Neurological Diseases and Brain Function The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China Institute of Epigenetics and Brain Science Southwest Medical UniversityLuzhouSichuan 646000China Department of Neurosurgery The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China Inflammation and Allergic Diseases Research Unit The Affiliated Hospital of Southwest Medical UniversityLuzhouSichuan 646000China

SARS-CoV-2 has been demonstrated to be highly susceptible to neuron-and glial-like cells,1 but there is no consensus regarding how the virus affects neurons following *** is therefore unknown if and how SARS-CoV-2 maintains the homeostasis of neuronal ***,we revealed that the receptor-binding domain(RBD)of the SARS-CoV-2 spike protein acted as an extracellular remodeling component to undermine epigenetic regulation,perturbnascentRNA(nsRNA)transcription,promote mitochondrial biogenesis,and increase cellular viability in SH-Sy5y cells.

关键词： invasion homeostasis maintain