检索结果-南通市图书馆

China Foundry 2024年第5期21卷 427-444页

作者： Hai-dong Zhao Xue-ling wang Qian Wan Wen-hui Bai Fei Liu School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510640China

Al and Mg alloy high pressure die castings(HPDC)are increasingly used in automotive *** microstructures in the castings have decisive effect on the casting mechanical properties,in which the microstructure characteristics are fundamental for the investigation of the microstructure-property *** the past decade,the microstructure characteristics of HPDC Al and Mg alloys,especially micro-pores andα-Fe,have been investigated from two-dimensional(2D)to threedimensional with X-ray micro-computed tomography(μ-CT).This paper provides an overview of the current understanding regarding the 3D characteristics and formation mechanisms of microstructures in HPDC alloys,their spatial distributions,and the impact on mechanical ***,it outlines future research directions for the formation and control of heterogeneous microstructures in HPDC alloys.

关键词： high pressure die casting microstructure three-dimensional characteristics distribution Al and Mg alloys

Research progresses on cathode materials of aqueous zinc-ion batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 237-264页

作者： Zengyuan Fan Jiawei wang Yunpeng Wu Xuedong Yan Dongmei Dai Xing-Long Wu Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry School of Chemistry and Environmental Engineering Changchun University of Science and Technology Chongqing Research Institute Changchun University of Science and Technology Institute of Energy Storage and Conversion Technology College of Chemical EngineeringNingbo Polytechnic School of Chemistry and Chemical Engineering Henan Normal University MOE Key Laboratory for UV Light-Emitting Materials and Technology School of Physics Northeast Normal University

Electrochemical energy storage and conversion techniques that exhibit the merits such as high energy density,rapid response kinetics,economical maintenance requirements and expedient installation procedures will hold a pivotal role in the forthcoming energy storage technologies *** recent years,aqueous zinc-ion batteries（AZIBs） have garnered substantial attention as a compelling candidate for large-scale energy storage systems,primarily attributable to their advantageous featu res encompassing cost-effectiveness,environmental sustainability,and robust safety ***,one of the primary factors hindering the further development of AZIBs originates from the challenge of cathode ***,the three mainstream types of mainstream cathode materials,in terms of manganese-based compounds,vanadium-based compounds and Prussian blue analogues,surfer from the dissolution of Mn2+,in the low discharge voltage,and the low specific capacity,*** strategies have been developed to compensation the above intrinsic defects for these cathode materials,including the ionic doping,defect engineering,and materials ***,this review first provides a systematic summarization of the zinc storage mechanism in AZIBs,following by the inherent merit and demerit of three kind of cathode materials during zinc storage analyzed from their structure characteristic,and then the recent development of critical strategies towards the intrinsic insufficiency of these cathode *** this review,the methodologies aimed at enhancing the efficacy of manganese-based and vanadium-based compounds are emphasis ***,the article outlines the future prospective directions as well as strategic proposal for cathode materials in AZIBs.

关键词： Aqueous zinc−ion batteries Cathode materials Optimization strategies

Research progress toward the influence of mosquito salivary proteins on the transmission of mosquito-borne viruses

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Insect Science 2024年第3期31卷 663-673页

作者： Zhao-Yang wang Kai-Xiao Nie Ji-Chen Niu Gong Cheng Tsinghua University-Peking University Joint Center for Life Sciences School of MedicineTsinghua UniversityBejingChina Institute of Infectious Diseases Shenzhen Bay LaboratoryShenzhenGuangdongChina Department of Pathogen Biology School of Basic MedicineShandong First Medical University&Shandong Academy of Medical SciencesJinanChina

Mosquito-borne viruses(MBVs)are a large class of viruses transmitted mainly through mosquito bites,including dengue virus,Zika virus,Japanese encephalitis virus,West Nile virus,and chikungunya virus,which pose a major threat to the health of people around the *** global warming and extended human activities,the incidence of many MBVs has increased *** saliva contains a variety of bioactive protein *** not only enable blood feeding but also play a crucial role in regulating local infection at the bite site and the remote dissemination of MBVs as well as in remodeling the innate and adaptive immune responses of host ***,we review the physiological functions of mosquito salivary proteins(MSPs)in detail,the influence and the underlying mechanism of MSPs on the transmission of MBVs,and the current progress and issues that urgently need to be addressed in the research and development of MSP-based MBV transmission blocking vaccines.

关键词： immune response mosquito-borne virus mosquito salivary protein saliva vaccine transmission

SOX17-mediated immune evasion in early colorectal cancer:From pre-malignant adaptation to tumor progression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第8期14卷 3780-3782页

作者： Yanfeng Gao Yanping wang Jinsong Zhao Yujun Song School of Medical Imaging Wannan Medical CollegeWuhu 241002China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life ScienceNanjing UniversityNanjing 210023China

One of the hallmarks of cancer is its inherently immunosuppressive microenvironment,which strategically manipulates surrounding immune cells,signaling molecules,and structural components to shield cancer cells from immune attacks and foster tumor *** tumor microenvironment is characterized by the presence of immunosuppressive entities such as tumor-associated macrophages,T cells,tumor-associated neutrophils,and myeloid-derived suppressor cells(MDSCs),as well as metabolic alterations like hypoxia2 and elevated lactate levels3.

关键词： Immune escape Tumor microenvironment Immunotherapy Immunosuppressive tumor microenvironment Transcription factor CD8^(+)T cell infiltration AKP organoids CRISPReCas9 genome editing

Numerical simulation study on the mold strength of magnetic mold casting based on a coupled electromagnetic-structural method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Foundry 2024年第5期21卷 577-587页

作者： Wei-li Peng Jian-hua Zhao Cheng Gu Ya-jun wang College of Materials Science and Engineering Chongqing UniversityChongqing 400045China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China National Key Laboratory of Advanced Casting Technologies Chongqing UniversityChongqing 400044China

The properties of the magnetic mold in magnetic mold casting directly determine the quality of the final cast *** this study,the magnetic mold properties in magnetic mold casting,were studied utilizing a coupled electromagnetic-structural method through numerical *** study investigated key factors including equivalent stress,the distribution of tensile and compressive stresses,and the area ratio of tensile *** compared molds made entirely of magnetic materials with those made partially of magnetic *** results indicate that as current increases from 4 A to 8 A,both the initial magnetic mold and the material-replaced magnetic mold initially show an increasing trend in equivalent stress,tensile-compressive stress,and the area ratio of tensile stress,peaking at 6 A before *** material replacement,the area ratio of tensile stress at 6 A decreases to 19.84%,representing a reduction of 29.72%.Magnetic molds comprising a combination of magnetic and non-magnetic materials exhibit sufficient strength and a reduced area ratio of tensile stress compared to those made entirely from magnetic *** study provides valuable insights for optimizing magnetic mold casting processes and offers practical guidance for advancing the application of magnetic molds.

关键词： magnetic mold casting coupled electromagnetic-structural method numerical simulation stress analysis

Norepinephrine-Astrocyte Signaling Regulates Cortical State Homeostasis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2024年第7期40卷 1021-1024页

作者： Yulan Li Lixuan Li Yibei wang Xinyi Li Zhong Chen Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province School of Pharmaceutical SciencesZhejiang Chinese Medical UniversityHangzhou 310053China Department of Neurology Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310009China

Cortical states such as high and low arousal during wakefulness or rapid eye movement(REM)and non-REM(NREM)phases of sleep are fundamental biological processes that are highly conserved across *** intricate balance or... 详细信息

关键词： homeostasis NREM stasis

辣椒秆与LDPE共热解特性及其炭化产物还田适宜性评价

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

农业工程学报 2024年第14期40卷 155-161页

作者：宋威孟海波陈明松王泽阳安佳铭丛宏斌农业农村部规划设计研究院农业农村部农业废弃物能源化利用重点实验室北京100125 青岛农业大学机电工程学院青岛266109 农业农村部沼气科学研究所成都610041

针对中国部分地区农作物秸秆与农膜处理难的问题,利用外加热热解工艺,开展了辣椒秸秆(CS,chili straw)与低密度聚乙烯(LDPE,low density polyethylene)的共热解试验,研究了不同掺混比和热解温度对共热解产物产率、特性及共热解炭还田指... 详细信息

针对中国部分地区农作物秸秆与农膜处理难的问题,利用外加热热解工艺,开展了辣椒秸秆(CS,chili straw)与低密度聚乙烯(LDPE,low density polyethylene)的共热解试验,研究了不同掺混比和热解温度对共热解产物产率、特性及共热解炭还田指标的影响。结果表明,混合样品的分解主要有脱水、挥发分析出、聚合物降解和焦炭形成4个阶段。随着热解温度的升高,共热解炭的产率呈下降趋势,共热解气和共热解油的产率增加;共热解气的LHV(low heat value)处于8.6~14.5 MJ/m^(3)之间,共热解炭的LHV处于19.6~28.5 MJ/kg之间。此外,随着温度升高,共热解炭的挥发分逐渐减少,固定碳和灰分逐渐增加;共热解炭的比表面积处于0.4~2.2 m^(2)/g之间,与温度呈正相关,与掺混比呈负相关,共热解炭的pH值与温度呈正相关,整体处于10.1~12.5之间,掺混比对pH值的影响不明显;共热解炭的PAHs(polycyclic aromatic hydrocarbon)含量及TEQ(toxic equivalent quantity)毒性低于其他研究平均值,只有15%-500℃(LDPE质量分数为15%,在500℃热解)中PAHs总量超过EBC设定的优质级阈值(4 mg/kg)。高温条件下利于PAHs的分解,共热解炭用于还田应适当提高热解温度,为农村秸秆和农膜处理提供参考。

关键词：热解膜辣椒秸秆低密度聚乙烯共热解特性共热解炭还田适宜性

FUSE: a federated learning and U-shape split learning-based electricity theft detection framework

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第4期67卷 339-340页

作者： Xuan LI Naiyu wang Liehuang ZHU Shuai YUAN Zhitao GUAN School of Control and Computer Engineering North China Electric Power University School of Cyberspace Science and Technology Beijing Institute of Technology Department of Finance Operationsand Information Systems(FOIS)Brock University

In recent years, the data-driven electricity theft detection methods integrated with edge cloud computing [1, 2] have not only demonstrated superior detection accuracy but also improved efficiency, making them viable alternatives to indoor inspections. Energy service providers(ESPs) typically manage regions by dividing them into various transformer districts(TDs). The detection of electricity theft in a particular region is performed by the associated TD,

关键词： Sensitive data

Regulation of pseudographitic carbon domain to boost sodium energy storage

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 5188-5196页

作者： Zhidong Hou Mingwei Jiang Da Lei Xiang Zhang Yuyang Gao Jian-Gan wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Lab of Graphene(NPU)Xi’an 710072China

Hard carbon anode has shown extraordinary potentials for sodium-ion batteries(SIBs)owing to the cost-effectiveness and advantaged ***,the widespread application of hard carbon is still hindered by the insufficient sodium storage capacity and depressed rate property,which are mainly induced by the undesirable pseudographitic ***,we develop a molten-salt-mediated strategy to regulate the pseudographitic structure of hard carbon with suitable interlayer spacing and enlarged pseudographitic domain,which is conducive to the intercalation capacity and diffusion kinetics of sodium ***,the optimized hard carbon anode delivers a high reversible capacity of 320 mAh·g^(−1),along with superior rate property(138 mAh·g−1 at 2 A·g^(−1))and stable cyclability over 1800 ***,the in situ Raman spectroscopic study and full-cell assembly further investigate the sodium storage mechanism and practical implement of obtained hard *** work pioneers a low-cost and effective route to regulate the pseudographitic structure of hard carbon materials for advanced SIBs.

关键词： pseudographitic structure molten salt hard carbon anode sodium-ion batteries

Selective deposition of a MOF at the spikes of Au nanostars for SERS detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第10期17卷 9166-9173页

作者： Yi Liu Ka Kit Chui Xinyue Xia Han Zhang Xiaolu Zhuo Jianfang wang School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Department of Physics The Chinese University of Hong KongShatinHong Kong 999077China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310000China

In the pursuit of advancing molecular sensing through surface-enhanced Raman spectroscopy(SERS),the combination of plasmonic nanoparticles and metal-organic frameworks(MOFs)has emerged as a highly effective approach to enhance the sensitivity and selectivity of SERS ***,most prior investigations have predominantly focused on MOF-coated plasmonic nanoparticles in core@shell or layer-by-layer configurations,leaving a notable knowledge gap in exploring alternative *** we present a facile method to construct a particle-on-mirror architecture by selectively coating a MOF,zeolitic imidazolate framework-8(ZIF-8),onto the tips of Au nanostars and subsequently depositing the resultant nanoparticles onto a Au *** design integrates the electric field enhancement at the sharp tips and nanogaps,along with the molecular enrichment function within the porous MOF immobilized at the tips and nanogaps,leading to a substantial boost in the SERS signal *** a unique SERS platform enables consistent and outstanding SERS performance for analytes of different *** work opens up a promising strategy for constructing multifunctional nanostructures for sensitive SERS detection in real-life scenarios.

关键词： electric field enhancement gold nanostars metal-organic frameworks molecular enrichment plasmon coupling surfaceenhanced Raman spectroscopy(SERS)substrates