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Systematic comparison of the effectiveness of radial artery and saphenous vein or right internal thoracic artery coronary bypass grafts in non-left anterior descending coronary arteries

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第4期12卷 273-279页

作者： Xiang hu Qiang zhao Department of Cardiac Surgery Ruijin Hospital School of Medicine Shanghai Jiao Tong University Shanghai 200025 China

Coronary artery bypass grafting surgery is increasingly being carried out on patients with multi-vessel coronary artery disease,but the best grafting candidate for non-left anterior descending coronary arteries is *** research sought to systematically compare the efficacies and safeties of coronary bypass with radial artery and other available grafts.A systematic literature retrieval was performed for all clinical trials comparing the outcomes of coronary artery bypass surgery with radial artery and other grafts in PubMed,EMBASE,and the Cochrane *** eligible clinical studies,comparing radial artery and great saphenous vein grafts,were found between 1966 and 2010:one prospective non-randomized and six prospective randomized *** pooling analysis obtained a relative risk of 0.507 (P<0.05) of graft occlusion in radial arteries compared with great saphenous *** was a significantly lower infection rate in arms (i.e.,harvest sites for radial arteries) relative to legs (harvest sites for veins),with a pooled relative risk of 0.140 (P<0.05).From the reports on mortality after follow-up ranging from one year to six years,there was no significant difference in mortality between the two graft types (P=0.927).In addition,four cohort controlled trials for radial and right internal thoracic artery grafts were *** radial graft was associated with less cardiac related events relative to the right internal thoracic artery graft (P=0.014),but with comparable mortality and comparable rates of repeat percutaneous transluminal coronary *** with radial arteries seemed to have a lower occlusion rate and a lower graft harvest site infection rate than those with great saphenous *** there were fewer cardiac related events with radial arteries relative to the right internal thoracic artery *** studies are needed to confirm these findings concerning the favorable outcomes of coronary artery bypass grafting with radia

关键词： Coronary artery bypass grafting (CABG) Arterial grafts Meta-analysis

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Aldo-Keto reductase 1C3 reduces myocardial cell damage after acute myocardial infarction by activating the Kelch-like ECH-associated protein 1-nuclear factor erythroid 2-related factor 2-antioxidant response element pathway to inhibit ferroptosis

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Journal of Geriatric Cardiology 2024年第9期21卷 899-912页

作者： Wang MIAO Yun-zhao hu Department of Cardiology Shunde HospitalSouthern Medical Universitythe First People’s Hospital of ShundeFoshanChina The Second School of Clinical Medicine Southern Medical UniversityGuangzhouChina

Background Acute myocardial infarction(AMI)is a high-risk cardiovascular condition associated with increased cellular damage and oxidative ***-Keto Reductase 1C3(AKR1C3)is a stress-regulating ***,its specific role and mechanisms regarding AMI remain *** We assessed cardiac function through echocardiography;tissue damage was evaluated using Hematoxylin and Eosin(HE)and Masson trichrome ***1C3 expression levels were measured through Reverse transcription-quantitative polymerase chain reaction and western *** cell viability using Cell Counting Kit-8 and lactate dehydrogenase(LDH)*** extent of ferroptosis was determined by measuring the levels of Fe2+,boron-dipyrromethane(BODIPY)and malondialdehyde(MDA),the glutathione/glutathione disulfide(GSH/GSSG)ratio,and the expression of Glutathione Peroxidase 4(GPX4)and Solute carrier 7A11(SLC7A11).Kelch-like ECH-associated protein 1-Nuclear factor erythroid 2-related factor 2-Antioxidant response element(Keap1-Nrf2-ARE)pathway activation was analyzed through western ***2 was inhibited with ML385and activated with(R)-Sulforaphane to investigate the Keap1-Nrf2-ARE *** The rats in the AMI group displayed reduced heart function,more tissue damage,and lower AKR1C3 expression compared to the Sham ***,hypoxia-treated H9C2 cells showed reduced viability,and decreased AKR1C3 *** AKR1C3 in H9C2 cells enhanced *** down AKR1C3 exhibited the opposite *** the inhibitors tested,Ferrostatin-1 most effectively restored cell viability in hypoxia-treated H9C2 ***,H9C2 cells subjected to hypoxia suggested Keap1-Nrf2-ARE pathway *** AKR1C3 reduced ferroptosis and activated the Keap1-Nrf2-ARE pathway in hypoxia-treated cells,knocking down AKR1C3 exhibited the opposite *** experiments using ML385 in hypoxia-treated H9C2 cells with overexpressed AKR1C3 showed decreased viabil

关键词： damage Antioxidant myocardial

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Understanding the roles of Ti on the structure and electrochemical performances of Li2Ru1-xTixO3 cathode materials for Li-ion batteries

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Journal of Energy Chemistry 2019年第6期28卷 9-16页

作者： hu zhao Yanchao Shi Li Xue Yingzhi Cheng Zhongbo hu Xiangfeng Liu College of Materials Science and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049China Inner Mongolia Synthetic Chemical Institute Hohhot 010072Inner MongoliaChina School of Chemical Engineering Shandong University of TechnologyZibo 255049ShandongChina

The lattice doping has been widely used to improve the electrochemical performances of Li-rich cathode materials but the roles of the introduced foreign atoms are still not very ***,a series of Li2Ru1-xTixO3 solid solutions have been synthesized and the roles of Ti doping on the structural and electrochemical properties of Li2RuO3 have been comprehensively *** Rietveld refinement exhibits that the interlayer spacing gradually shortens with increasing Ti *** shrinkage is favorable to the layered structure stability but increases the lithium diffusion *** measurements show that Li2Ru0.8Ti0.2O3 possesses the best cyclability with 196.9 and 196.1 m Ah g-1for charge and discharge capacity retaining after 90 cycles,*** voltammetry scanning indicates that Ti dopant promotes the formation of more peroxo-or superoxo-like species but reduces the initial coulumbic *** of electrochemical impedance spectroscopy display that Ti doping reduces the charge transfer impedance,which facilitates the lithium-ion diffusion across the electrolyteelectrode interface and improves the electronic ***2Ru0.8Ti0.2O3exhibits the best electrochemical performance owing to the balance among all the factors discussed *** study also offers some new insights into optimizing the electrochemical performances of Li-rich cathode materials through the lattice doping.

关键词： Lithium-ion battery Li-rich cathode Ti doping Rietveld refinement

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Load-balanced broadcast routing in wireless Ad-hoc networks

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The Journal of China Universities of Posts and Telecommunications 2007年第3期14卷 1-4,42页

作者： hu Tian zhao Bao-hua Department of Computer Science and Technology University of Science and Technology of China Hefei 230027 China

In wireless Ad-hoc networks, where mobile hosts are powered by batteries, the entire network may be partitioned because of the drainage of a small set of batteries. Therefore, the crucial issue is to improve the energy efficiency, with an objective of balancing energy consumption. A greedy algorithm called weighted minimum spanning tree （WMST） has been proposed, in which time complexity is O（n^2）. This algorithm takes into account the initial energy of each node and energy consumption of each communication. Simulation has demonstrated that the performance of the proposed algorithm improves the load balance and prolongs the lifetime.

关键词： wireless Ad-hoc networks broadcast routing load balance lifetime

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Modulating the mean residence time difference of wide-size particles in a fluidized bed

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Chinese Journal of Chemical Engineering 2018年第2期26卷 238-244页

作者： hu zhao Jun Li Qingshan Zhu Hongzhong Li State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

For non-catalytic gas-solid reaction, it is desirable to match the mean residence time （MRT） of particles and complete conversion time （tc） in a fluidized bed. In this study, the MRT differences （MRT ratios） between the coarse particles and the fine particles were investigated in a continuous fluidized bed with a side exit by varying the superficial gas velocity, feed composition and particle size ratio, The results show that the MRT ratio increases firstly and then decreases with increasing the gas velocity. By controlling the gas velocity and the feed composi tion of coarse particles, the MRT ratio can be modulated from 1.8 to 10.5 at the gas velocity of 1.0 m-s -1 for the binary mixture with the size ratio of 2.2. The MRT ratio can reach to - 12 at the gas velocity of 1.2 m. s for the particle size ratio of 3.3. The present study has endeavored to obtain fundamental data for an effective plant operation to meet the need of synchronously complete conversion of particles with different sizes during the film diffusion controlling reaction.

关键词： Fluidized bedMean residence timeWide size distributionBinarymixture

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Kinetics of recrystallization for twin-roll casting AZ31 magnesium alloy during homogenization

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 570-575页

作者： hu zhao Pei-jie Li Liang-ju He National Center of Novel Materials for International Research Tsinghua University Beijing 100084 China

The kinetics of recrystallization for twin-roll casting AZ31 magnesium alloy with different thicknesses during homogenization was *** is shown that fine grains are first formed at the boundaries of deformed bands in the twin-roll casting *** recrystallized grains with no strain are gradually substituted for the deformed microstructure of twin-roll casting AZ31 magnesium *** incubation temperature and time for the recrystallization of a twin-roll casting AZ31 magnesium alloy strip with a thickness of 3 mm are lower and shorter than those of the 6-mm thick strip,*** 3-mm thick twin-roll casting magnesium alloy has finer grains than the 6-mm thick *** activation energies of recrystallization for twin-roll casting AZ31 magnesium alloy slabs with the thickness of 3 and 6 mm are 88 and 69 kJ/mol,*** kinetics curves of recrystallization for twin-roll casting AZ31 magnesium alloy were obtained.

关键词： magnesium alloys twin-roll casting homogenization kinetics grain size

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Separation,preconcentration and determination of Pb(Ⅱ) in water samples using microcrystalline triphenylmethane loaded with quinolin-8-olate

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Chinese Chemical Letters 2009年第3期20卷 334-338页

作者： Li Na hu zhao Gang Ren College of Chemistry and Chemical Engineering China West Nomal University Nanchong 637002 China

This paper described a novel method for the preconcentration of Pb（II） using microcrystalline triphenylmethane loaded with quinolin-8-olate prior to the determination by flame atomic absorption spectrometry. Pb（II） could be enriched by controlling appropriate condition. The preconcentration factor could reach to 200 and the detection limit of Pb（II） was 0.074 μg/L. The recovery was in a range of 93.5-103% with relative standard deviation of 1.0-2.2%. The proposed method had been successfully applied to the determination of trace Pb（U） in various water samples with satisfactory result.

关键词： Microcrystalline triphenylmethane Quinolin-8-olate Separation Preconcentration and determination

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Topological analysis of plasma flow control on corner separation in a highly loaded compressor cascade

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Acta Mechanica Sinica 2012年第5期28卷 1277-1286页

作者： Xiao-hu zhao Yun Wu Ying-Hong Li Xue-De Wang Qin zhao Science and Technology on Plasma Dynamics Laboratory Air Force Engineering University

In this paper, flow behavior and topology structure in a highly loaded compressor cascade with and without plasma aerodynamic actuation （PAA） are investigated. Streamline pattern, total pressure loss coefficient, outlet flow angle and topological analysis are considered to study the effect and mechanism of the plasma flow control on corner separation. Results presented include the boundary layer flow behavior, effects of three types of PAA on separated flows and performance parameters, topology structures and sequences of singular points with and without PAA. Two separation lines, reversed flow and backflow exist on the suction surface. The cross flow on the endwall is an important element for the comer separation. PAA can reduce the undertuming and overturning as well as the total pressure loss, leading to an overall increase of flow turning and enhancement of aerodynamic performance. PAA can change the topology structure, sequences of singular points and their corresponding separation lines. Types II and III PAA are much more efficient in controlling comer separation and enhancing aerodynamic performances than type I.

关键词： Plasma aerodynamic actuation - Compressor Cascade Topology structure Corner separation

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CFD simulation of solids residence time distribution in a multi-compartment fluidized bed

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Chinese Journal of Chemical Engineering 2017年第12期25卷 1706-1713页

作者： Zheng Zou Yunlong zhao hu zhao Libo Zhang zhaohui Xie Hongzhong Li Qingshan Zhu State Key Laboratory of Multi-phase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

The present work focuses on a numerical investigation of the solids residence time distribution(RTD) and the fluidized structure of a multi-compartment fluidized bed, in which the flow pattern is proved to be close to plug flow by using computational fluid dynamics(CFD) simulations. With the fluidizing gas velocity or the bed outlet height rising, the solids flow out of bed more quickly with a wider spread of residence time and a larger RTD variance(σ2). It is just the heterogeneous fluidized structure that being more prominent with the bed height increasing induces the widely non-uniform RTD. The division of the individual internal circulation into double ones improves the flow pattern to be close to plug flow.

关键词： RTD Bed geometry CFD Hydrodynamics Fluidization

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Numerical analysis of residence time distribution of solids in a bubbling fluidized bed based on the modified structure-based drag model

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Particuology 2017年第3期15卷 30-38页

作者： Zheng Zou Yunlong zhao hu zhao Hongzhong Li Qingshan Zhu zhaohui Xie Yingbo Li State Key Laboratory of Multi-phase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Belting 100049 China Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Belting 100190 China

The residence time distribution （RTD） of solids and the fluidized structure of a bubbling fluidized bed were investigated numerically using computational fluid dynamics simulations coupled with the modified structure-based drag model. A general comparison of the simulated results with theoretical values shows reasonable agreement. As the mean residence time is increased, the RTD initial peak intensity decreases and the RTD curve tail extends farther. Numerous small peaks on the RTD curve are induced by the back- mixing and aggregation of particles, which attests to the non-uniform flow structure of the bubbling fluidized bed. The low value of t50 results in poor contact between phases, and the complete exit age of the overflow particles is much longer for back-mixed solids and those caught in dead regions. The formation of a gulf-stream flow and back-mixing for solids induces an even wider spread of RTD.

关键词： FluidizationResidence time distribution Bubbling fiuidized bed Modified structure-based drag mode Computational fluid dynamics CFD

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