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Stroke & Vascular Neurology 2022年第4期7卷 271-275页

作者： Xi Chen Jiawen Xu Shidong Chen qiang dong yi dong Department of Neurology Huashan Hospital Fudan UniversityShanghaiChina

INTRODUCTION Patients with an acute minor ischaemic stroke or high-risk transient ischaemic attack(TIA)had a higher risk of recurrent stroke within 3 months after *** antiplatelet therapy(DAPT)with clopidogrel and aspirin was more effective than aspirin alone for reducing subsequent events in this patient population in the Clopidogrel in High-Risk Patients with Acute Nondisabling Cerebrovascular Events(CHANCE)and the Platelet-Oriented Inhibition in New TIA and Minor Ischaemic Stroke(POINT)trials.

关键词： Acute acute Platelet

Wavelet Galerkin Methods for Aerosol Dynamic Equations in Atmospheric Environment

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Communications in Computational Physics 2009年第6期6卷 109-130页

作者： dong Liang qiang Guo Sunling Gong Department of Mathematics and Statistics York University4700 Keele StreetTorontoOntarioM3J 1P3Canada Air Quality Research Division S&T BranchEnvironment Canada4905 Dufferin StreetTorontoOntarioM3H 5T4Canada

Aerosol modelling is very important to study and simulate the behavior of aerosol dynamics in atmospheric *** this paper,we consider the general nonlinear aerosol dynamic equations which describe the evolution of the aerosol *** time and discrete time wavelet Galerkin methods are proposed for solving this *** using the Schauder’s fixed point theorem and the variational technique,the global existence and uniqueness of solution of continuous time wavelet numerical methods are established for the nonlinear aerosol dynamics with sufficiently smooth initial *** error estimates are obtained for both continuous and discrete time wavelet Galerkin *** examples are given to show the efficiency of the wavelet technique.

关键词： Aerosol dynamics wavelet Galerkin methods semi-discrete fully-discrete existence error estimate

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无线时间敏感网络技术综述

软件学报 2025年第1期36卷 184-202页

作者：乔萱李宗辉刘强艾渤万海邓仰东北京交通大学计算机与信息技术学院北京交通大学电子信息工程学院清华大学软件学院

由IEEE 802.1任务组开发的时间敏感网络标准可以用来构建高可靠、低延迟、低抖动的以太网,将时间敏感网络扩展到无线领域也是目前许多工作的研究重点.与传统的有线通信相比,无线的时间敏感网络不仅可以实现高可靠和低时延通信,还具有更... 详细信息

由IEEE 802.1任务组开发的时间敏感网络标准可以用来构建高可靠、低延迟、低抖动的以太网,将时间敏感网络扩展到无线领域也是目前许多工作的研究重点.与传统的有线通信相比,无线的时间敏感网络不仅可以实现高可靠和低时延通信,还具有更高的灵活性、更强的移动性以及更低的布线和维护成本等优点.因此,在面对未来无人驾驶、协作机器人、远程医疗控制等新兴应用时,无线时间敏感网络被认为是一种十分有前景的技术.无线网络一般可以分为基于基础设施的无线网络和无基础设施的无线网络,而后者基于移动性还可以分为两类:移动自组织网络和无线传感网络,因此主要从这3种网络类型出发,对其应用场景、相关技术、路由协议以及高可靠低时延传输进行了调研与综述.

关键词：时间敏感网络 5G 移动自组织网络无线传感网络

Relationship Between Hematoma Expansion Induced by Hypertension and Hyperglycemia and Blood-brain Barrier Disruption in Mice and Its Possible Mechanism:Role of Aquaporin-4 and Connexin43

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Neuroscience Bulletin 2020年第11期36卷 1369-1380页

作者： Heling Chu Zidan Gao Chuyi Huang Jing dong yuping Tang qiang dong Department of Neurology Huashan HospitalState Key Laboratory of Medical NeurobiologyFudan UniversityShanghai 200040China Department of Neurology North Huashan HospitalFudan UniversityShanghai 201907China Department of Neurology Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Neurology Shanghai East HospitalTongji University School of MedicineShanghai 200120China

We aimed to select an optimized hematoma expansion(HE)model and investigate the possible mechanism of blood-brain barrier(BBB)damage in *** results showed that HE occurred in the group with hypertension combined with hyperglycemia(HH-HE)from3 to 72 h after intracerebral hemorrhage;this was accompanied by neurological deficits and hardly influenced the survival *** receiver operating characteristic curve suggested the criterion for this model was hematoma volume expansion≥45.0%.Meanwhile,HH-HE aggravated BBB disruption.A protector of the BBB reduced HH-HE,while a BBB disruptor induced a further ***-4(AQP4)knock-out led to larger hematoma volume and more severe BBB ***,hematoma volume and BBB disruption were reduced by multiple connexin43(Cx43)inhibitors in the wild-type group but not in the AQP4 knock-out *** conclusion,the optimized HE model is induced by hypertension and hyperglycemia with the criterion of hematoma volume expanding≥45.0%.HH-HE leads to BBB disruption,which is dependent on AQP4 and Cx43.

关键词： Intracerebral hemorrhage Hematoma expansion Animal model Blood-brain barrier Aquaporin-4 Connexin43

Zinc phosphate dissolution by bacteria isolated from an oligotrophic karst cave in central China

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Frontiers of Earth Science 2013年第3期7卷 375-383页

作者： Hongmei WAng qiang dong Jianping ZHOU Xing XIAng State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Wuhan 430074 China

Biogeochemical processes are fundamental to sustain the ecosystem in subsurface caves, but to date they are still far from well understood. To investigate micro-bially mediated phosphorus and zinc cycles, we isolated three bacterial strains from the dripping water in Heshang cave, central China, identified as Exiguobacterium aurantiacum E11, Pseudomonas fluorescens P35, and Pseu- domonas poae P41, respectively. Microbial capabilities in the dissolution of phosphorus-containing minerals were tested with zinc phosphate （Zn3（PO4）2） in batch culture at 30~C. A spectrophotometer, atomic absorption spectrum, and scanning electronic microscopy were used to measure the microbial growth, soluble Zn（II） concentration, and to observe the morphology of Zn3（PO4）2 before and after microbial dissolution. P. fluorescens and P. poae, the well- known phosphorus solubilizing bacteria （PSB）, are observed to solubilize Zn3（PO4）2 with an efficiency of 16.7% and 17.6%, respectively. To our knowledge, E. aurantiacum is firstly reported in this study to dissolve phosphorous-containing minerals with a higher efficiency of 39.7%, expanding our understanding about the ubiquitous occurrence of PSB in natural environments. Aqueous Zn（II） concentration positively correlates with H＋ activity, confirming the presence of acidification mechanisms widely exploited by PSB. Few itching pits were observed on the surface of Zn3（PO4）2 after microbial dissolution, inferring that microbial dissolution is not always associated with the direct contact with minerals. Even though the soluble Zn（II） concentration reached up to 370 mg/L in the system inoculated with E. aurantiacum Ell, inhibition of microbial growth was not detected by spectrophotometer. Our laboratory data revealed the importance of microbially-mediated P and Zn cycles in the subsurface ecosystem.

关键词： karst cave phosphate solubilizing bacteria (PSB) zinc toxicity biogeochemical process subsurface biosphere

Study of （2＋1）-Dimensional Higher-Order Broer-Kaup System

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Communications in Theoretical Physics 2007年第3期47卷 403-408页

作者： WAng Ling LIU Xi-qiang dong Zhong-Zhou School of Mathematical Sciences Liaocheng University Liaocheng 252059 China Department of Mathematics Chizhou Teacher＇s College Chizhou 247000 China

Painleve property and infinite symmetries of the （2＋1）-dimensional higher-order Broer-Kaup （HBK） system are studied in this paper. Using the modified direct method, we derive the theorem of general symmetry *** to （2＋1）-dimensional HBK system. Based on our theorem, some new forms of solutions are obtained. We also find infinite number of conservation laws of the （2＋1）-dimensional HBK system.

关键词： (2+1)-dimensional HBK system Painleve property symmetries exact solution conservation laws

Pyrolysis mechanism of glucose and mannose: The formation of 5-hydroxymethyl furfural and furfural

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Journal of Energy Chemistry 2018年第2期27卷 486-501页

作者： Bin Hu qiang Lu Xiaoyan Jiang Xiaochen dong Minshu Cui Changqing dong y.ngping y.ng National Engineering Laboratory for Biomass Power Generation Equipment North China Electric Power University

Fast pyrolysis of biomass will produce various furan derivatives, among which 5-hydroxymethyl furfural（5-HMF） and furfural（FF） are usually the two most important compounds derived from holocellulose. In this study, density functional theory（DFT） calculations are utilized to reveal the formation mechanisms and pathways of 5-HMF and FF from two hexose units of holocellulose, i.e., glucose and mannose. In addition, fast pyrolysis experiments of glucose and mannose are conducted to substantiate the computational results, and the orientation of 5-HMF and FF is determined by 13C-labeled glucoses. Experimental results indicate that C1 provides the aldehyde group in both 5-HMF and FF, and FF is mainly derived from C1 to C5 segment. According to the computational results, glucose and mannose have similar reaction pathways to form 5-HMF and FF with d-fructose（DF） and 3-deoxy-glucosone（3-DG） as the key intermediates. 5-HMF and FF are formed via competing pathways. The formation of 5-HMF is more competitive than that of FF, leading to higher yield of 5-HMF than FF from both hexoses. In addition, compared with glucose,mannose can form 5-HMF and FF via extra pathways because of the epimerization at C2 position. Therefore, mannose pyrolysis results in higher yields of 5-HMF and FF than glucose pyrolysis.

关键词： Pyrolysis mechanism 5-HMF FF Density functional theory ^13C isotope labeling

Symmetry Reductions, Exact Solutions and Conservation Laws of Asymmetric Nizhnik-Novikov-Veselov Equation

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Communications in Theoretical Physics 2008年第1期49卷 1-8页

作者： WAng Ling dong Zhong-Zhou LIU Xi-qiang Department of Mathematics and Computer Science Chizhou University Chizhou 247000 China Software Engineering Institute East China Normal University Shanghai 200062 China School of Mathematics Sciences Liaocheng University Liaocheng 252059 China

By apply.ng a direct symmetry method, we get the symmetry of the asymmetric Nizhnik-Novikov-Veselov equation （ANNV）. Taking the special case, we have a finite-dimensional symmetry. By using the equivalent vector of the symmetry, we construct an eight-dimensional symmetry algebra and get the optimal system of group-invariant solutions. To every case of the optimal system, we reduce the ANNV equation and obtain some solutions to the reduced equations. Furthermore, we find some new explicit solutions of the ANNV equation. At last, we give the conservation laws of the ANNV equation.

关键词： direct symmetry method ANNV equation optimal system explicit solution conservation laws

FCC coprocessing oil sands heavy gas oil and canola oil. 3. Some cracking characteristics

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Green Energy & Environment 2019年第1期4卷 83-91页

作者： Siauw H.ng Nicole E.Heshka y.ng Zheng qiang Wei Fuchen Ding Natural Resources Canada CanmetENERGY Department of Chemical Engineering University of New Brunswick State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing Institute of Petrochemical Technology

Coprocessing of bitumen-derived feeds and biomass through a fluid catalytic cracking(FCC) route has the potential to assist in the reduction of fuel and petroleum product carbon footprints while meeting government regulatory requirements on renewable transportation fuels. This approach is desirable because green house gas(GHG) emissions for producing renewable biofuels are significantly lower than those for fossil fuels, and coprocessing can be executed using existing refining infrastructure to save capital cost. The present study investigates the specific FCC performances of pure heavy gas oil(HGO) derived from oil sands synthetic crude, and a mixture of 15 v% canola oil in HGO using a commercial equilibrium catalyst under typical FCC conditions. Cracking experiments were performed using a bench-scale Advanced Cracking Evaluation(ACE) unit at fixed weight hourly space velocity(WHSV) of 8 h^(-1), 490–530℃, and catalyst/oil ratios of 4–12 g/g. This work focuses on some cracking phenomena resulting from the presence of oxygen in the blendda lower heat requirement for cracking due to the exothermic water formation, which also entails lower hydrogen yield at a given severity. The distribution of feed oxygen in gaseous and liquid products, the mitigation in GHG emissions, and the technological and economical advantages of the coprocessing option are also discussed.

关键词： FCC coprocessing Microactivity test(MAT) unit Four-lump kinetic model Heat of formation of water vapour Carbon footprint reduction

Feedback Stabilization for a Class of Second Order Singular Distributed Parameter System in Hilbert Space

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 89-100页

作者： Feng LIU Guo-dong SHI Zhao-qiang GE School of Mathematics and Physics Jiangsu University of Technology School of Information Science and Engineering Changzhou University Department of Applied Mathematics Xi’an Jiaotong University

Feedback stabilization for a class of second order singular distributed parameter system with multi- inputs is discussed via functional analysis and operator theory in Hilbert space, the solutions of the problem and the constructive expressions of the solutions are given by the generalized inverse of bounded linear operator. This research is theoretically important for study.ng the stability of the singular distributed parameter system.

关键词： feedback stabilization second order singular distributed parameter system multi-inputs Hilbert space