检索结果-南通市图书馆

REcENT DEVELOPMENTS IN MODELING THE DAMPING BEHAVIOR OF MMcs

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 715-721页

作者： j.c. wang, Z.M. Zhang and G.c. Yang State Key Labortory of Solidification Processing, Northwestern Polytecnical University, Xi’an 710072, china

Taking three kinds of metal-matrix composites (MMcS) (laminated composites, fibers reinforced MMcs, and particle-reinforced MMcs)as examples, the recent develop ments in modeling the damping behaviors of MMcs are extensively reviewed. The damping mechanisms of different kinds of composites are quite different, and therefore, the analytical of numerical methods for different kinds of MMcs are also quite different. This will he shown in this extensive review. Furthermore, the directions of future developments in modeling the damping behavior of MMcs are also presented.

关键词： modeling MMcs damping behavior

A Feasibility Study of FES Restoration of Elbow Movementsfor c5/c6 Quadriplegic Patients

在线全文

学校读者我要写书评

暂无评论

chinese journal of Biomedical Engineering(English Edition) 1998年第3期7卷 119-122页

作者： N. Lan j.c. wang P. Lin and Y. Li(Dept. of Electrical Engineering, Tsinghua UniversityBeijing 100084, P. R. china)(Spinal cord injury Unit, charity Hospitalchina Rehabilitation Research center, Beijing 100077, P. R. china)

This paper presents a feasibility study of restoration of elbow movements in c5/c6quadriplegic patientS by functional electrical stimulation (FES). A biomechanical model of thebiceps and triceps muscles and elbow joint is developed for computer simulation. A feedbackcontrol method is evaluated in the study for the static and dynamic responses. Results indicate thatit is possible to achieve extension control at the elbow joint with electrical stimulation of extensormuscle. These results may provide a plausible control method for controlling elbow extensionmovements in clinical application.

关键词： Functional Electrical Stimulation (FES) Rehabilitation Engineering Motor control

Measurement of Reaction cross Section at Intermediate Energies for Neutron-Deficient Nuclei(A<30)and Possible Proton Halo Structure on 23Al and 27P

在线全文

学校读者我要写书评

暂无评论

Measurement of Reaction Cross Section at Intermediate Energi...

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

ccAST“放射性束物理”研讨会

作者： X.Z. cai, W.Q. Shen, Z.Z. Ren, D.Q. Fang, H.Y. Zhang, j. Feng, Z.Y.Zhu, W.Z. jiang, Y.G. Ma, c. ZhongW.L. Zhan, Z.Y. Guo, G.Q. Xiao, j.S. wang, Y.T. Zhu, j.c. wang, j.X. Li, M. wang, Q.j. wang, Z.Q.chen, j.F. wang, Z.j. Ning’Shanghai Institute of Nuclear Research, chinese Academy of Sciences,Shanghai 201800, china 2ccAST(WorldLaboratory) P.O.Box 8730, Beijing WOOSO.china .Institute of Modern Physics, chinese Academy of Sciences, Lanzhou730000, chinaPhysics Department of Nanjing University, Nanjing 210008, chinaPhysics Department ofNingbo University, Ningbo 315211, china

Reaction cross section σ of proton-rich isoto谱es (A<30) on c target have beenmeasured at intermediate energies around 30MeV/u by a transmission *** increases of the experimentalσ are observed for Al and P compared...

Reaction cross section σ of proton-rich isoto谱es (Ac target have beenmeasured at intermediate energies around 30MeV/u by a transmission *** increases of the experimentalσ are observed for Al and P compared withtheir neighboring *** suggests that there is an anomalously large matter RMSradius in these nuclei. Together with their very weakly binding of the last proton,itindicates that there is a one-proton halo in Al and P. This conclusion is also supportedby the difference factor d which is deduced from the measured and theoreticalσ in theGlauber or BUU model and is used for the manifest of halo phenomena. The theoreticalcalculation based on the RDDH model also shows that there is a one proton halo in Pand in Al when the last proton of Al is in the 2s orbit. The significance of theproton halo in Al is discussed.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

journal of Energy chemistry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan Zhang Xingyu Zhou Qian wang changyu Liu Yangyang Liu Hui wang Xiaojie Liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 c,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 c current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPc full cell demonstrated stable cycling over 200 cycles at a high 5 c current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate cathode

Electro-osmotic flow and heat transfer of a non-Newtonian fluid in a hydrophobic microchannel with Navier slip

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

journal of Hydrodynamics 2015年第5期27卷 647-657页

作者： MISRA j.c. SINHA A. Adjunct Professor Centre for Healthcare Science and Technology Indian Institute of Engineering Science and Technology School of Medical Science and Technology Indian Institute of Technology

In this paper, we investigate the implications of electro-osmosis on electrohydrodynamic transport of a non-Newtonian fluid on a hydrophobic micro-channel by developing a suitable analytical method. Velocity-slip and temperature-jump conditions are paid due attention. An attempt has been made to examine the effects of rheological and electro-osmotic parameters on the kinematics of the fluid. The nonlinear Poisson-Boltzmann equation governing the formation of the electrical double layer and the body force that is generated by the applied potential are accounted for in the study. Perturbation solutions are presented. In order to exhibit the applicability of the analysis, the problem of electro-osmotic flow and heat transfer of blood in an arteriole has been taken up as an illustrative example of a real-life problem. An intensive quantitative study has been made through numerical computation of the physical variables involved in the analysis, which are of special interest in the study. The computational results are presented graphically. The study reveals that the temperature of blood can be controlled by increasing/decreasing the joule heating parameter.

关键词： electro-osmotic flow hydrophobic microchannel electrical double layer viscoelastic fluid velocity-slip temperature-jump

MODELING AND EXPERIMENTAL RESEARcH OF FOUR-STRAND LOW-FREQUENcY ELEcTROMAGNETIc cASTING ALUMINUM ALLOY

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2007年第3期20卷 157-166页

作者： j.c. Li B.F. wang j.Z. cui School of Materials ＆ Metallurgy Inner Mongolia University of Science and Technology Baotou 014010 China The Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang 110004 China

With the aid of ANSYS software, the effect of different mould external part materials on magnetic flux density in the aluminum melt and magnetic field interaction of four coils applied with same currents were investigated. calculating results showed that magnetic flux density in the aluminum melt was greatly improved and the magnetic field interaction among different coils was decreased when external part of mould is made of soft magnetic material. Based on the finding, a four-strand low-frequency electromagnetic casting 6063 aluminum alloy experiment was carried out in the laboratory . The experiment showed that the surface of the billet was smooth and had no exudations and cold shuts, the as-cast microstructures were fine, uniform, equiaxed, net-globular or globular under low-frequency electromagnetic field. The microstructure becomes finer with increased current value.

关键词： low-frequency electromagnetic casting finite element method aluminum alloy mould

NEcAB family of neuronal calcium-binding proteins in health and disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1236-1243页

作者： Diones Bueno Michael K.E.Schafer Sudena wang Michael j.Schmeisser Axel Methner Institute for Molecular Medicine University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Department of Anesthesiology University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Institute of Anatomy University Medical Center of the Johannes Gutenberg-UniversityMainzGermany

The N-terminal EF-hand calcium-binding proteins 1–3(NEcAB1–3) constitute a family of predominantly neuronal proteins characterized by the presence of at least one EF-hand calcium-binding domain and a functionally less well characterized c-terminal antibiotic biosynthesis monooxygenase domain. All three family members were initially discovered due to their interactions with other proteins. NEcAB1 associates with synaptotagmin-1, a critical neuronal protein involved in membrane trafficking and synaptic vesicle exocytosis. NEcAB2 interacts with predominantly striatal G-protein-coupled receptors, while NEcAB3 partners with amyloid-β A4 precursor protein-binding family A members 2 and 3, key regulators of amyloid-β production. This demonstrates the capacity of the family for interactions with various classes of proteins. NEcAB proteins exhibit distinct subcellular localizations: NEcAB1 is found in the nucleus and cytosol, NEcAB2 resides in endosomes and the plasma membrane, and NEcAB3 is present in the endoplasmic reticulum and Golgi apparatus. The antibiotic biosynthesis monooxygenase domain, an evolutionarily ancient component, is akin to atypical heme oxygenases in prokaryotes but is not wellcharacterized in vertebrates. Prokaryotic antibiotic biosynthesis monooxygenase domains typically form dimers, suggesting that calcium-mediated conformational changes in NEcAB proteins may induce antibiotic biosynthesis monooxygenase domain dimerization, potentially activating some enzymatic properties. However, the substrate for this enzymatic activity remains uncertain. Alternatively, calcium-mediated conformational changes might influence protein interactions or the subcellular localization of NEcAB proteins by controlling the availability of protein–protein interaction domains situated between the EF hands and the antibiotic biosynthesis monooxygenase domain. This review summarizes what is known about genomic organization, tissue expression, intracellular localization, interac

关键词： calcium EF hand mitochondria nervous system signal transduction

Inflammasome links traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第6期20卷 1644-1664页

作者： Gabriela Seplovich Yazan Bouchi juan Pablo de Rivero Vaccari jennifer c.Munoz Pareja Andrew Reisner Laura Blackwell Yehia Mechref Kevin K.wang j.Adrian Tyndall Binu Tharakan Firas Kobeissy Department of Surgery Morehouse School of MedicineAtlantaGAUSA Department of Neurobiology Center for NeurotraumaMultiomics&Biomarkers(CNMB)Neuroscience InstituteMorehouse School of MedicineAtlantaGAUSA Department of Neurological Surgery and the Miami Proj.c. to cure Paralysis University of Miami Miller School of MedicineMiamiFLUSA Division of Pediatric critical care Department of PediatricsUniversity of Miami Miller School of MedicineMiamiFLUSA Department of Pediatrics Emory UniversityAtlantaGAUSA Department of Neurosurgery Children’s Healthcare of AtlantaAtlantaGAUSA Department of chemistry and Biochemistry Texas Tech UniversityLubbockTXUSA Morehouse School of Medicine AtlantaGAUSA

Traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease are three distinct neurological disorders that share common pathophysiological mechanisms involving neuroinflammation. One sequela of neuroinflammation includes the pathologic hyperphosphorylation of tau protein, an endogenous microtubule-associated protein that protects the integrity of neuronal cytoskeletons. Tau hyperphosphorylation results in protein misfolding and subsequent accumulation of tau tangles forming neurotoxic aggregates. These misfolded proteins are characteristic of traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease and can lead to downstream neuroinflammatory processes, including assembly and activation of the inflammasome complex. Inflammasomes refer to a family of multimeric protein units that, upon activation, release a cascade of signaling molecules resulting in caspase-induced cell death and inflammation mediated by the release of interleukin-1β cytokine. One specific inflammasome, the NOD-like receptor protein 3, has been proposed to be a key regulator of tau phosphorylation where it has been shown that prolonged NOD-like receptor protein 3 activation acts as a causal factor in pathological tau accumulation and spreading. This review begins by describing the epidemiology and pathophysiology of traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease. Next, we highlight neuroinflammation as an overriding theme and discuss the role of the NOD-like receptor protein 3 inflammasome in the formation of tau deposits and how such tauopathic entities spread throughout the brain. We then propose a novel framework linking traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease as inflammasomedependent pathologies that exist along a temporal continuum. Finally, we discuss potential therapeutic targets that may intercept this pathway and ultimately minimize long-term neurological decline.

关键词： Alzheimer's disease caspase-1 chronic traumatic encephalopathy inflammasomes neurodegeneration neuroinflammation NLRP1 NLRP3 pyroptosis tauopathy traumatic brain injury

Gas Line Pressure Fluctuation Analysis of a Gas-Liquid Reactor

在线全文

学校读者我要写书评

暂无评论

journal of Thermal Science 2005年第3期14卷 267-271页

作者： j.j.j. cHEN j.c. ZHAO chemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand ProfessorChemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand

To ensure efficient operation of metallurgical gas-liquid reactors, the gas bubbles must be uniformly distributed. For high temperature metallurgical reactors, it is impractical and unsafe to carry out visual observations. An air-water model was used to study the relationship between the bubble flow patterns and the pressure fluctuation signals. The fluctuation signals captured in the time domain were transformed into the frequency domain. Various parameters obtained from the transformed data were analysed for their suitability for delineating the bubble flow patterns observed. These parameters and the flow patterns were found to be well-correlated using the gas flow number.

关键词： gas liquid reactors bubble distribution signal analysis