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Chinese Journal of Integrative Medicine 2011年第12期17卷 944-944页

作者： zhang ting-dong Harbin Med Coll Affiliated Hosp 1 Harbin Peoples R China

zhang ting-dong, a medical professor from the First Affiliated Hospital of Harbin Medical University, was honored with the Outstanding Achievement in Life Science Award for the first application of arsenous acid in th... 详细信息

关键词： zhang ting-dong A Pioneer in Treating Leukemia with Arsenous Acid Wins the Outstanding Achievement in Life Science Award

Endoplasmic reticulum stress and autophagy in cerebral ischemia/reperfusion injury:PERK as a potential target for intervention

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Neural Regeneration Research 2025年第5期20卷 1455-1466页

作者： Ju Zheng Yixin Li ting zhang Yanlin Fu Peiyan Long Xiao Gao Zhengwei Wang Zhizhong Guan Xiaolan Qi Wei Hong Yan Xiao Key Laboratory of Endemic and Ethnic Diseases Ministry of Education&Key Laboratory of Medical Molecular Biology of Guizhou ProvinceGuizhou Medical UniversityGuiyangGuizhou ProvinceChina Guizhou Center for Disease Control and Prevention GuiyangGuizhou ProvinceChina Department of Histology and Embryology Guizhou Medical UniversityGuiyangGuizhou ProvinceChina Collaborative Innovation Center for Prevention and Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry GuiyangGuizhou ProvinceChina

Several studies have shown that activation of unfolded protein response and endoplasmic reticulum(ER)stress plays a crucial role in severe cerebral ischemia/reperfusion *** occurs within hours after cerebral ischemia,but the relationship between ER stress and autophagy remains *** this study,we established experimental models using oxygen-glucose deprivation/reoxygenation in PC12 cells and primary neurons to simulate cerebral ischemia/reperfusion *** found that prolongation of oxygen-glucose deprivation activated the ER stress pathway protein kinase-like endoplasmic reticulum kinase(PERK)/eukaryotic translation initiation factor 2 subunit alpha(e IF2α)-activating transcription factor 4(ATF4)-C/EBP homologous protein(CHOP),increased neuronal apoptosis,and induced ***,inhibition of ER stress using inhibitors or by si RNA knockdown of the PERK gene significantly attenuated excessive autophagy and neuronal apoptosis,indicating an interaction between autophagy and ER stress and suggesting PERK as an essential target for regulating *** autophagy with chloroquine exacerbated ER stress-induced apoptosis,indicating that normal levels of autophagy play a protective role in neuronal injury following cerebral ischemia/reperfusion *** from this study indicate that cerebral ischemia/reperfusion injury can trigger neuronal ER stress and promote autophagy,and suggest that PERK is a possible target for inhibiting excessive autophagy in cerebral ischemia/reperfusion injury.

关键词： apoptosis ATF4 autophagy C/EBP homologous protein cerebral ischemia/reperfusion injury eIF2α endoplasmic reticulum stress PERK

Recurrent Neural Networks for Computing the Moore-Penrose Inverse with Momentum Learning

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Chinese Journal of Electronics 2020年第6期29卷 1039-1045页

作者： zhang Naimin zhang ting Department of Mathematics Wenzhou University

We are concerned with a kind of iterative method for computing the Moore-Penrose inverse,which can be considered as a discrete-time form of recurrent neural *** study the momentum learning scheme of the method and discuss its semi-convergence when computing the Moore-Penrose inverse of a rankdeficient *** prove the semi-convergence for our new acceleration algorithm and obtain the optimal momentum factor which makes the fastest *** tests demonstrate the effectiveness of our new acceleration algorithm.

关键词： Moore-Penrose inverse Optimisation techniques recurrent neural nets iterative method neural nets momentum learning scheme gradient methods convergence of numerical methods discrete-time form matrix algebra Numerical approximation and analysis semiconvergence convergence recurrent neural networks Interpolation and function approximation (numerical analysis) Discrete control systems iterative methods optimal momentum factor Neural computing techniques backpropagation learning (artificial intelligence) discrete time systems Knowledge engineering techniques

Non-formation of vacuum states for Navier-Stokes equations with density-dependent viscosity

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第10期8卷 1681-1690页

作者： zhang ting FANG Dao-yuan Department of Mathematics Zhejiang University Hangzhou 310027 China

We consider the Cauchy problem, free boundary problem and piston problem for one-dimensional compressible Navier-Stokes equations with density-dependent viscosity. Using the reduction to absurdity method, we prove that the weak solutions to these systems do not exhibit vacuum states, provided that no vacuum states are present initially. The essential re- quirements on the solutions are that the mass and energy of the fluid are locally integrable at each time, and the Lloc1-norm of the velocity gradient is locally integrable in time.

关键词： Compressible Navier-Stokes equations Vacuum states Density-dependent viscosity

DEPENDENCE OF QUALITATIVE BEHAVIOR OF THE NUMERICAL SOLUTIONS ON THE IGNITION TEMPERATURE FOR A COMBUSTION MODEL

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Journal of Computational Mathematics 2005年第4期23卷 337-350页

作者： Xin-ting zhang Lung-an Ying Key Laboratory of Pure and Applied Mathematics School of Mathematical Sciences Peking University Beijing 100871 China

We study the dependence of qualitative behavior of the numerical solutions （obtained by a projective and upwind finite difference scheme） on the ignition temperature for a combustion model problem with general initial condition. Convergence to weak solution is proved under the Courant-Friedrichs-Lewy condition. Some condition on the ignition temperature is given to guarantee the solution containing a strong detonation wave or a weak detonation wave. Finally, we give some numerical examples which show that a strong detonation wave can be transformed to a weak detonation wave under some well-chosen ignition temperature.

关键词： Detonation wave solutions Combustion model Upwind finite difference scheme

Self-supported transition metal chalcogenides for oxygen evolution

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Nano Research 2023年第7期16卷 8684-8711页

作者： ting zhang Jianrui Sun Jingqi Guan Institute of Physical Chemistry College of ChemistryJilin University2519 Jiefang RoadChangchun 130021China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

Owing to stable spatial framework and large electrochemical interface,self-supported transition metal chalcogenides have been actively explored in renewable energy fields,especially in oxygen evolution reaction(OER).Here,we review the research progress of self-supported transition metal chalcogenides(including sulfides,selenides,and tellurides)for the OER in recent *** basic principle and evaluation parameters of OER are first introduced,and then the preparation methods of transition metal chalcogenides on various self-supporting substrates(including Ni foam(NF),carbon cloth(CC),carbon fiber paper(CFP),metal mesh/plate,etc.)are systematically ***,advanced optimization strategies(including interface and defect engineering,heteroatom doping,edge engineering,surface morphology engineering,and construction of heterostructure)are introduced in detail to improve the inherent catalytic activity of self-supported ***,the challenges and prospects of developing more promising self-supported chalcogenide electrocatalysts are proposed.

关键词： self-supported chalcogenide oxygen evolution reaction(OER) interface and defect engineering heteroatom doping heterostructure

Pompon-like NiCo_(2)O_(4) nanospheres:a potential candidate for the counter electrode in quantum dot-sensitized solar cells

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Tungsten 2023年第2期5卷 235-246页

作者： Qiu zhang ting-ting zhang Feng-Yan Li Lin Xu Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of ChemistryNortheast Normal UniversityChangchun 130024China

To find a novel counter electrode(CE)material for quantum dot-sensitized solar cells(QDSSCs),pompon-like NiCo_(2)O_(4) nanospheres are synthesized by a facile solvothermal and post-calcination method and we attempt to apply it as a CE material for QDS *** catalytic performance of NiCo_(2)O_(4) counter electrode is investigated in detail through electrochemical impedance spectroscopy,Tafel test and cyclic *** catalytic activity of NiCo_(2)O_(4) CE is superior to that of nanoflower-like Cu2S CE and traditional Cu2S/brass CE,which is mainly attributed to the large specific surface area,outstanding electrical conductivity of bimetallic oxides and the synergistic promotion effect of metals with different valence *** standard sunlight(air mass AM 1.5G 100 mW·cm^(-2)),the CdS/CdSe/ZnS-sensitized solar cell assembled with NiCo_(2)O_(4) CE achieved a photoelectric conversion efficiency of 5.55%,with a short current density of 22.49 mA·cm^(-2),an open circuit voltage of 0.574 V,and a fill factor of 0.43,which is slightly higher than the QDSSCs with nanoflower-like Cu_(2)S CE(4.75%)and traditional Cu_(2)S/brass CE(4.69%).This research provides ideas for discovering innovative and efficient CE materials for QDSSCs.

关键词： QDSSCs Counter electrodes NiCo_(2)O_(4) Cu_(2)S

Analytical solutions to the Navier-Stokes equations for non-Newtonian fluid

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Applied Mathematics(A Journal of Chinese Universities) 2009年第4期24卷 483-489页

作者： CHEN Ping zhang ting Department of Mathematics Zhejiang University Hangzhou 310027 China Center of Mathematical Sciences Zhejiang University Hangzhou 310027 China

The pressureless Navier-Stokes equations for non-Newtonian fluid are studied. The analytical solutions with arbitrary time blowup, in radial symmetry, are constructed in this paper. With the previous results for the analytical blowup solutions of the N-dimensional （N ≥ 2） Navier-Stokes equations, we extend the similar structure to construct an analytical family of solutions for the pressureless Navier-Stokes equations with a normal viscosity term （μ（ρ）｜ u｜^α u）.

关键词： blowup solution pressureless Navier-Stokes equation non-Newtonian fluid

Effects of Sea-Surface Waves and Ocean Spray on Air-Sea Momentum Fluxes

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Advances in Atmospheric Sciences 2018年第4期35卷 469-478页

作者： ting zhang Jinbao SONG Ocean College Zhejiang University State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyState Oceanic Administration

The effects of sea-surface waves and ocean spray on the marine atmospheric boundary layer （MABL） at different wind speeds and wave ages were investigated. An MABL model was developed that introduces a wave-induced component and spray force to the total surface stress. The theoretical model solution was determined assuming the eddy viscosity coefficient varied linearly with height above the sea surface. The wave-induced component was evaluated using a directional wave spectrum and growth rate. Spray force was described using interactions between ocean-spray droplets and wind-velocity shear. Wind profiles and sea-surface drag coefficients were calculated for low to high wind speeds for wind-generated sea at different wave ages to examine surface-wave and ocean-spray effects on MABL momentum distribution. The theoretical solutions were compared with model solutions neglecting wave-induced stress and/or spray stress. Surface waves strongly affected near-surface wind profiles and sea-surface drag coefficients at low to moderate wind speeds. Drag coefficients and near-surface wind speeds were lower for young than for old waves. At high wind speeds, ocean-spray droplets produced by wind-tearing breaking-wave crests affected the MABL strongly in comparison with surface waves, implying that wave age affects the MABL only negligibly. Low drag coefficients at high wind caused by ocean-spray production increased turbulent stress in the sea-spray generation layer, accelerating near-sea-surface wind. Comparing the analytical drag coefficient values with laboratory measurements and field observations indicated that surface waves and ocean spray significantly affect the MABL at different wind speeds and wave ages.

关键词： drag coefficient marine atmospheric boundary layer ocean spray droplets surface waves

Regularity of the Koch-Tataru solutions to Navier-Stokes system Dedicated to the NSFC-CNRS Chinese-French summer institute on fluid mechanics in 2010

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Science China Mathematics 2012年第2期55卷 453-464页

作者： zhang Ping zhang ting Academy of Mathematics and Systems Science and Hua Loo-Keng Key Laboratory of Mathematics Chinese Academy of SciencesBeijing 100190China Department of Mathematics Zhejiang UniversityHangzhou 310027China

In this paper, we shall prove that the Koch-Tataru solution u to the incompressible Navier-Stokes equations in Rd satisfies the decay estimates involving some borderline Besov norms with d ≥ 3. Moreover, u has a uniq... 详细信息

关键词： Navier-Stokes equations Littlewood-Paley theory trajectories