检索结果-南通市图书馆

Editorial Commentary:Copper Homeostasis in Neurodegenerative Diseases

在线全文

学校读者我要写书评

暂无评论

Current Medical Science 2024年第1期44卷 244-245页

作者： Ying-hui LI kun wang Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityCollege of MedicineQingdao UniversityQingdao 266021China

Copper,as an essential trace nutrient,plays a crucial role in biological processes such as mitochondrial respiration,antioxidant stress response,and the synthesis of ***,cellular copper concentrations are maintained at very low levels,a pattern also observed in cancer cells to prevent adverse consequences of copper overload,such as *** involves copper dependency,accumulation of lipidated proteins,and a reduction in Fe-S cluster proteins[1].Various neurodegenerative diseases are associated with imbalances in copper homeostasis.

关键词： copper Copper consequences

High-Volume Mineral Admixtures Cement: The Effects of Particle Size Distribution

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 Wuhan University of Technology(Materials Science) 2024年第1期39卷 102-108页

作者：黄启珉 wang kun LU Jiping YU Jianping SHENG Zhenhua 杨露 State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Fujian Jinniu Cement Co. LtdSanming 353300China

The effects of high-volume slag-fly ash cement with different particle sizes on hydration degree,microstructure and mechanical properties were systematically studied,by means of laser particle size(DLS),X-ray diffraction (XRD),comprehensive thermal analysis (TG-DTA),scanning electron microscopy(SEM) and mechanical properties *** results show that suitable particle size distribution of cementitious material has significantly promoting effects on hydration reaction rate and mechanical *** with slag without further grinding,the slag after ball milling for 4 h has an obvious improvement in reactivity,which also provides a faster hydration rate and higher compressive strength for the cementitious *** the slag milled for 1 and 4 h is mixed at a mass ratio of 2:1 (i e,slag with D_(50) of 7.4μm and average size of 9.9μm,and slag with D_(50) value of 2.6μm and average size of 5.3μm),and a certain amount of fly ash is added in,the most obvious improvement of compressive strength of cement is achieved.

关键词： ultrafine slag microstructure compressive strength particle size

Exploration of heavy Higgs bosons at a 100 TeV hadron collider within the semi-constrained next-to-minimal supersymmetric standard model

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第9期48卷 107-117页

作者： kun wang Pengfu Tian Jingya Zhu College of Science University of Shanghai for Science and TechnologyShanghai 200093China School of Physics and Technology Wuhan UniversityWuhan 430072China School of Physics and Electronics Henan UniversityKaifeng 475004China

In this study,we explore the detectability of heavy Higgs bosons in the pp→bbH/A→bbtt channel at a100 TeV hadron collider within the semi-constrained next-to-minimal supersymmetric standard *** calculate their production cross sections and decay branching ratios and compare them with simulation results from *** focus on the heavy doublet-dominated CP-even Higgs H and CP-odd Higgs A,with mass limits set below 10TeV to ensure *** a collider with an integrated luminosity of 3 ab^(-1),the potential for detecting heavy Higgs bosons varies significantly with their mass and tanβ.Heavy Higgs bosons with masses below 2 TeV are within the testable range,while those heavier than 7 TeV are below the exclusion and discovery thresholds,rendering them *** masses between 2 and 7 TeV,heavy Higgs bosons with tanβ smaller than 20 can be detected,whereas those with tanβ larger than 20 are beyond the current discovery or exclusion capabilities.

关键词： next-to-minimal supersymmetric standard model heavy Higgs boson 100 TeV hadron collider

A multichannel thermal bubble-actuated impedance flow cytometer with on-chip TIA based on CMOS-MEMS

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2024年第5期45卷 41-49页

作者： Shengxun Cai Jianqing Nie kun wang Yimin Guan Demeng Liu School of Microelectronics Shanghai UniversityShanghai 201800China Shanghai AURE Technology Limited Company Shanghai 201800China

Electrochemical impedance spectroscopy(EIS)flow cytometry offers the advantages of speed,affordability,and portability in cell analysis and cytometry ***,the integration challenges of microfluidic and EIS read-out circuits hinder the downsizing of cytometry *** address this,we developed a thermal-bubble-driven impedance flow cytometric application-specific integrated circuit(ASIC).The thermal-bubble micropump avoids external piping and equipment,enabling high-throughput *** a total of 36 cell counting channels,each measuring 884×220μm^(2),the chip significantly enhances the throughput of flow *** cell counting channel incorporates a differential trans-impedance amplifier(TIA)to amplify weak biosensing *** eliminating the parasitic parameters created at the complementary metal-oxidesemiconductor transistor(CMOS)-micro-electromechanical systems(MEMS)interface,the counting accuracy can be *** on-chip TIA can adjust feedback resistance from 5 to 60 kΩto accommodate solutions with different *** chip effectively classifies particles of varying sizes,demonstrated by the average peak voltages of 0.0529 and 0.4510 mV for 7 and 14μm polystyrene beads,***,the counting accuracies of the chip for polystyrene beads and MSTO-211H cells are both greater than 97.6%.The chip exhibits potential for impedance flow cytometer at low cost,high-throughput,and miniaturization for the application of point-of-care diagnostics.

关键词： EIS flow cytometry CMOS-MEMS thermal bubble lab-on-chip

Transient long-range distance measurement by a Vernier spectral interferometry

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2024年第6期12卷 1107-1114页

作者： LIANG XU kun wang CHEN LIU WENYING CHEN CHI ZHANG XINLIANG ZHANG Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China

Rapid and long-range distance measurements are essential in various industrial and scientific applications,and among them,the dual-comb ranging system attracts great attention due to its high ***,the tem-poral asynchronous sampling results in the tradeoff between frame rate and ranging precision,and the non-ambiguity range(NAR)is also limited by the comb cycle,which hinders the further advancement of the dual-comb ranging *** this constraint,we introduce a Vernier spectral interferometry to improve the frame rate and NAR of the ranging ***,leveraging the dispersive time-stretch technology,the dual-comb interferometry becomes spectral ***,the asynchronous time step is unlimited,and the frame rate is improved to 100 ***,dual-wavelength bands are introduced to implement a Vernier spectral interferometry,whose NAR is enlarged from 1.5 m to 1.5 ***,this fast and long-range system also demonstrated high precision,with a 22.91-nm Allan deviation over 10-ms averaging *** a result,the proposed Vernier spectral interferometry ranging system is promising for diverse applications that necessitate rapid and extensive distance measurement.

关键词： interferometry spectral system

Multidomain Hybrid Direct DG and Central Difference Methods for Viscous Terms in Hyperbolic-Parabolic Equations

在线全文

学校读者我要写书评

暂无评论

NUMERICAL MATHEMATICS-THEORY METHODS AND APPLICATIONS 2024年第1期17卷 1-36页

作者： Yuan, Weixiong Liu, Tiegang Zhang, Bin Cao, Kui wang, kun Beihang Univ LMIB Beijing 100191 Peoples R China Beihang Univ Sch Math Sci Beijing 100191 Peoples R China

A class of multidomain hybrid methods of direct discontinuous Galerkin (DDG) methods and central difference (CD) schemes for the viscous terms is proposed in this paper. Both conservative and nonconservative coupling modes are discussed. To treat the shock wave, the nonconservative coupling mode automatically switch to conservative coupling mode to preserve the conservative property when discontinuities pass through the artificial interface. To maintain the accuracy of the hybrid methods, the Lagrange interpolation polynomials and their derivatives are reconstructed to handle the coupling cells in the DDG subdomain, while the values of ghost points for the CD subdomain are calculated by the approximate polynomials from the DDG methods. The linear stabilities of these methods are demonstrated in detail through von-Neumann analysis. The multidomain hybrid DDG and CD methods are then extended to one- and two-dimensional hyperbolic-parabolic equations. Numerical results validate that the multidomain hybrid methods are high-order accurate in the smooth regions, robust for viscous shock simulations and capable to save computational cost.

关键词： Direct discontinuous Galerkin central difference schemes multidomain hybrid methods viscous terms hyperbolic-parabolic equations FINITE-ELEMENT-METHOD DISCONTINUOUS GALERKIN METHOD NAVIER-STOKES EQUATIONS CONSERVATION-LAWS EFFICIENT IMPLEMENTATION DG/FV METHODS CONVERGENCE RATE ORDER SCHEMES APPROXIMATIONS

Face Anti-Spoofing with Unknown Attacks:A Comprehensive Feature Extraction and Representation Perspective

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 Computer Science & Technology 2024年第4期39卷 827-840页

作者： Li-Min Li Bin-Wu wang Xu wang Peng-kun wang Yu-Dong Zhang Yang wang School of Software Engineering University of Science and Technology of ChinaHefei 230000China School of Data Science University of Science and Technology of ChinaHefei 23000China Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215000China

Face anti-spoofing aims at detecting whether the input is a real photo of a user(living)or a fake(spoofing)*** new types of attacks keep emerging,the detection of unknown attacks,known as Zero-Shot Face Anti-Spoofing(ZSFA),has become increasingly important in both academia and *** ZSFA methods mainly focus on extracting discriminative features between spoofing and living ***,the nature of the spoofing faces is to trick anti-spoofing systems by mimicking the livings,therefore the deceptive features between the known attacks and the livings,which have been ignored by existing ZSFA methods,are essential to comprehensively represent the ***,existing ZSFA models are incapable of learning the complete representations of living faces and thus fall short of effectively detecting newly emerged *** tackle this problem,we propose an innovative method that effectively captures both the deceptive and discriminative features distinguishing between genuine and spoofing *** method consists of two main components:a two-against-all training strategy and a semantic *** two-against-all training strategy is employed to separate deceptive and discriminative *** address the subsequent invalidation issue of categorical functions and the dominance disequilibrium issue among different dimensions of features after importing deceptive features,we introduce a modified semantic *** autoencoder is designed to map all extracted features to a semantic space,thereby achieving a balance in the dominance of each feature *** combine our method with the feature extraction model ResNet50,and experimental results show that the trained ResNet50 model simultaneously achieves a feasible detection of unknown attacks and comparably accurate detection of known *** results confirm the superiority and effectiveness of our proposed method in identifying the living with the interference of both known

关键词： face anti-spoofing spoof detection zero-shot learning convolutional neural network deep learning

Room-temperature and atmospheric-pressure hydrogenation of lignin-derived phenol to KA oil by Pt/NiO@MOFs

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8期17卷 7053-7060页

作者： Fengbin Zheng kun wang Yifei Ren Bohua wang Wenxing Chen Caoyu Yang Shengxian Shao Yinglong wang Zhiyong Tang Guodong Li College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100181China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Hydrogenation of lignin-derived phenol to KA oil(the mixture of cyclohexanone(K)and cyclohexanol(A))is attractive yet challenging in the sustainable upgrading of biomass derivatives under mild *** supported metal catalysts have been widely studied but the active components on supports often exhibit low recyclability due to their instability under experimental *** we show fabricating ultrasmall Pt/NiO in the pores of chromium terephthalate MIL-101 as catalysts for hydrogenation of ***,Pt/NiO@MIL-101 achieves catalytic phenol hydrogenation to KA oils of tunable K/A ratios and good reusability under room temperature and atmospheric hydrogen pressure,superior to contrast Pt@MIL-101 and Pt/NiO *** excellent performance mainly originates from the effective adsorption and activation of phenol by coordinatively unsaturated Cr sites and H2 activation on ultrasmall Pt/NiO as well as its effective spillover to the adsorbed phenol over Cr sites for hydrogenation ***,such catalyst also displays the excellent performances for hydrogenation of phenol’s derivatives under mild conditions.

关键词： ultrasmall Pt/NiO MIL-101 phenol hydrogenation KA oil

Combination of Nitrogen-Rich Skeleton and Coordination Group:Synthesis of a High-Energy Primary Explosive Based on 1H-Tetrazole-5-Carbohydrazide

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第1期31卷 271-277页

作者： Tingwei wang Zujia Lu Shu Bu Baolong Kuang Lu Zhang Zhenxin Yi kun wang Shunguan Zhu Jianguo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China School of Chemical Engineering Nanjing University of Science and Technology200 Xiaolingwei StreetXuanwuNanjing 210094China Department of Chemistry Laboratory of Structure and Functional Regulation of Hybrid MaterialsAnhui UniversityMinistry of EducationHefei 230601China

The high energy coordination compounds Cu(TZCA)_(2)(ClO_(4))_(2)(ECCs-1) was prepared by 1H-tetrazole-5-carbohydrazide(TZCA) with a high energy skeleton and a strong coordination ability *** the same time,the reaction activity of the ligand was explored,and the single crystal structure of it and intermediate were *** structures of all substances were characterized by IR and *** the structure and composition of ECCs-1 are confirmed by ESP,AC,SEM and *** and chemical properties tests show that ECCs-1 has an acceptable thermal stability(T_(d)=177℃) and extremely sensitive mechanical stimulation(IS=1 J,FS=5 N).The comprehensive performance test results show that ECCs-1 has excellent initiation *** addition,the decomposition mechanism of ECCs-1 is explored from two aspects of experiment and theoretical calculation.

关键词： 1H-tetrazole-5-carbohydrazide Primary explosive Decomposition mechanism Coordination polymers Laser