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Cooperative Sensing and Distributed Control of a Diffusion Process Using Centroidal Voronoi Tessellations

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Numerical Mathematics(Theory,Methods and Applications) 2010年第2期3卷 162-177页

作者： Haiyang chao Yang-quan Chen Center for Self Organizing and Intelligent Systems Electrical and Computer Engineering Department Utah State University Logan UT 84322 USA.

This paper considers how to use a group of robots to sense and control a diffusion *** diffusion process is modeled by a partial differential equation (PDE),which is a both spatially and temporally variant *** robots can serve as mobile sensors,actuators,or *** Voronoi Tessellations based coverage control algorithm is proposed for the cooperative sensing *** the diffusion control problem,this paper considers spraying control via a group of networked mobile robots equipped with chemical neutralizers,known as smart mobile sprayers or actuators,in a domain of interest having static mesh sensor network for concentration *** paper also introduces the information sharing and consensus strategy when using centroidal Voronoi tessellations algorithm to control a diffusion *** information is shared not only on where to spray but also on how much to spray among the mobile *** from using CVT and information consensus seeking for sensing and control of a diffusion process are demonstrated in simulation results.

关键词： Consensus centroidal Voronoi tessellations diffusion process distributed control mobile actuator and sensor networks.

Genetic Structure Analysis of Human Remains from Khitan Noble Necropolis

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Chemical Research in Chinese Universities 2006年第2期22卷 123-128页

作者： XU Yue ZHANG Xiao-lei CUI Yin-qiu ZHANG quan-chao ZHOU Hui ZHU Hong Ancient DNA Laboratory Research Center for Chinese Frontier Archaeology Jilin University Changchun 130012 P. R. China Macromolecular Laboratory College of Life Science Jilin University Changchun 130021 P. R. China

Ancient DNA was extracted from 13 skeletal remains from the burial groups of Khitan nobles, which were excavated in northeast China. The hypervariable segment Ⅰ sequences （ HVS Ⅰ ） of the mitochondrial DNA control region, in the 13 individuals, were used as genetic markers to determine the genetic relationships between the individuals and the genetic affinity to other interrelated populations by using the known database of mtDNA. Based on the phylogenetic analysis of these ancient DNA sequences, the genetic structures of two Khitan noble kindreds were obtained, including the Yel Yuzhi＇s kindred and the Xiao He＇s kindred. Furthermore, the relationships between the Khitan nobles and some modern interrelated populations were analyzed. On the basis of the result of the analysis, the gene flows of the ancient Khitans and their demographic expansion in history was deduced.

关键词： Ancient DNA Khitan Mitochondrial DNA Phylogenetic analysis

Impedance Studies of Spinel LiMn_2O_4 Electrode/electrolyte Interfaces

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Chemical Research in Chinese Universities 2008年第4期24卷 511-515页

作者： ZHUANG quan-chao FAN Xiao-yong XU Jin-mei WEI Guo-zhen DONG quan-feng SUN Shi-gang School of Materials Science and Engineering China University of Mining ＆ Technology Xuzhou 221116 P. R. China State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry Xiamen University Xiamen 361005 P. R. China

The formation process of solid electrolyte interphase（SEI） film on spinel LiMn2O4 electrode surface was studied by electrochemical impedance spectroscopy（EIS） during the initial storage in 1 mol/L LiPF6-EC：DMC：DEC electrolyte and in the subsequent first charge-discharge cycle. It has been demonstrated that the SEI film thickness increased with the increase of storage time and spontaneous reactions occurring between spinel LiMn2O4 electrode and electrolyte can be prevented by the SEI film. In the first charge-discharge cycle succeeding the storage, the electrolyte oxidation coupled with Li-ion insertion is evidenced as the main origin to increase the resistance of SEI film. The results also confirm that the variations of the charge transfer resistance（Rot） with the electrode potential（E） can be well described using a classical equation.

关键词： Li-ion batteries SEI film Electrochemical impedance spectroscopy Spinel LiMn2O4

T-cell lymphoblastic lymphoma with extensive thrombi and cardiac thrombosis:A case report and review of literature

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World Journal of Clinical Cases 2021年第31期9卷 9607-9616页

作者： Ying-Ying Ma quan-chao Zhang Xu Tan Xi Zhang Cheng Zhang Department of Hematology State Key Laboratory of TraumaBurns and Combined InjuryXinqiao Hospital of Army Medical UniversityChongqing 400037China Department of Nephrology The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of ChongqingChongqing Clinical Research Center of Kidney and Urology DiseasesXinqiao HospitalArmy Medical University(Third Military Medical University)Chongqing 400037China

BACKGROUND T-lymphoblastic lymphoma(T-LBL),a neoplasm of immature T-cell precursors or lymphoblasts,is a clinically aggressive *** general,patients with T-LBL have a poor prognosis and often have high-risk clinical features,such as mediastinal masses,central nervous system infiltration,or other indications of high tumor burden;however,extensive thrombi are not *** SUMMARY A 27-year-old woman presented to the Department of General Surgery with cervical lymph node enlargement accompanied by cough,wheezing,and palpitation for 3 mo.A complete blood count showed a white blood cell count of 1.6×10^(9)/L,a hemoglobin concentration of 135 g/L,and a platelet count of 175×10^(9)/L.A biopsy sample of the lymph node mass indicated T-cell lymphoblastic lymphoma,and the bone marrow immunophenotype indicated early T-cell precursor acute lymphoblastic leukemia(ETP-ALL).Abdominal and chest enhanced computed tomography showed thrombi in the superior vena cava,inferior vena cava,right hepatic vein,azygos vein,and right *** ultrasonic cardiogram showed a thrombus in the right atrium of 5.23 cm×4.21 *** patient was first treated with low-dose dexamethasone and lowmolecular-weight heparin followed by 2 cycles of ***,the ultrasonic cardiogram showed that thrombus in the right atrium had disappeared and the patient had achieved complete cytological *** maintenance therapy of the patient included chidamide 30 mg/wk,and she survived for 6 *** The incidence of venous thromboembolism is high in lymphoma;however,extensive thrombi with heart thrombosis is *** is the major method of treatment for lymphoma with *** successfully treated a patient with T-LBL complicated by extensive thrombi,including a large right atrial thrombus,with combined chemotherapy containing liposomal doxorubicin,and the patient achieved complete *** therapy with chidamide was also effective.

关键词： T-lymphoblastic lymphoma Thrombus Cardiac thrombosis Chemotherapy Case report

Structure Controlling and Adsorption Application of Polyethersulfone Porous Microspheres Prepared via Electrospraying

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Chinese Journal of Polymer Science 2014年第10期32卷 1390-1399页

作者： Min-le Peng Li-hua Wang Zhi-mei Wei Xiao-jun Wang quan-chao Zhang 龙盛如杨杰 College of Polymer Science and Engineering Sichuan University Institute of Materials Science and Technology Sichuan University State Key Laboratory of Polymer Materials Engineering (Sichuan University)

The focus of this work is to control the structure of electrosprayed polymer microspheres and then study the effect of different structures on the microspheres＇ adsorption properties. Scanning electron microscopy （SEM） coupled with image analysis software was employed to evaluate the size distributions and the structure of microspheres. According to the observation and analysis results, two types of polyethersulfone （PES） porous microspheres （perfect sphere-shaped and collapsed） were prepared via electrospraying technology by adjusting the solvent and polymer molecular weight. The porous PES microspheres can remove bisphenol A （BPA） from its aqueous solution effectively. Compared with collapsed microspheres, the rough microspheres had much higher specific surface area and better mobility in the BPA aqueous solution, so it showed a better adsorption capacity than that of collapsed microspheres. The solvent evaporation rate and the occurrence rate of phase separation significantly affect the structure and morphology of microspheres.

关键词： Electrospraying Polyethersulfones microspheres Structure Endocrine disruptors Adsorption.

Prediction and Experimental Validation of Forming Limit Curve of a Quenched and Partitioned Steel

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Journal of Iron and Steel Research International 2016年第6期23卷 580-585页

作者： Xue-li GAO Jun-ying MIN Ling ZHANG quan-chao LI Chang-wei LIAN Jian-ping LIN School of Mechanical Engineering Tongji University Shanghai 201804 China Chair of Production Systems Ruhr-University Bochum Bochum 44801 Germany State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel) Shanghai 201900 China

Forming limit curve（FLC）is an effective tool to evaluate the formability of sheet *** accurate FLC prediction for a sheet metal is beneficial to its engineering application.A quenched and partitioned steel,known as QP980,is one of the 3rd generation advanced high strength steels and is composed of martensite,ferrite and a considerable amount of retained austenite（RA）.Martensite transformation from RA induced by deformation,namely,transformation induced plasticity（TRIP）,promotes the capability of work hardening and consequently *** tests were carried out to obtain the experimental forming limit strains with the aid of digital image correlation *** electron microscopy（SEM）was employed to examine the fracture morphologies of Nakazima specimens of the QP980 *** observed dimple pattern indicated that tensile stress was the predominant factor which led to failure of QP980 ***,maximum tensile stress criterion（MTSC）was adopted as the forming limit *** predict the FLC of QP980 steel,Von-Mises yield criterion and power hardening law were adopted according to the tested mechanical properties of QP980 *** were compared with those derived from other three representative instability theories,*** criterion,Storen-Rice vertex theory and Bressan-Williams model,which shows that the MTSC based FLC is in better agreement with the experimental results.

关键词： criterion tensile martensite hardening plasticity TRIP austenite steels ferrite quenched

Phylogenetic Analysis of mtDNA from the Ancient Human of Yuan Dynasty in Inner Mongolia in China

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Chemical Research in Chinese Universities 2006年第2期22卷 177-180页

作者： FU Yu-qin XU Xue-lian ZHANG Xiao-lei ZHANG quan-chao ZHOU Hui ZHU Hong Ancient DNA Laboratory Research Center for Chinese Frontier Archaeology Jilin UniversityChangchun 130012 P. R. China College of Life Science Jilin University 130021 P. R. China

A study of the genetic structure of an ancient human excavated from the Yikeshu site of Yuanshangdu ancient city in Inner Mongolia and the relationships between the ancient population and the extant populations was carried out. Sequences of the control region and coding region of mtDNA from the ancient human were analyzed by using direct sequencing and restriction-fragment length polymorphism （RFLP） methods, Phylogenetic analysis and multidimensional scaling analysis were also performed on the mtDNA data of the ancient population and 12 extant populations. These results show that the ancient individuals of Yikeshu site can be assigned to D, G, B and Z haplogroups that are prevalent in Duars and Mongolians from Inner Mongolia. The ancient population is also closer to Duar and Mongolian populations in genetic distance than other compared populations. This study reveals that the ancient population from Yikeshu site in the Yuan Dynasty shares a common ancestor with Mongolic-speaking Daur and Mongolian tribes.

关键词： MtDNA Polymorphism Phylogenetic analysis

Fault geometrical model of Dujiangyan section in Longmenshan fault zone

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Earthquake Science 2018年第3期31卷 126-136页

作者： Hu-Rong Duan Sheng-Lei Chen Run Li quan-chao Yan College of Geomatics Xi'an University of Science and Technology

The focal mechanism solution on the seismic fault plane can reflect the geometric and kinematic characteristics of faults, and it is an important way to further study the fine structure of fault plane. From the focal mechanism solution of the earthquakes around the Dujiangyan fault in Longmenshan fault zone, we derived the average dip angle of Dujiangyan fault is 45.1° based on the seismic moment tensor theory. In order to refine the fault geometry structure, this paper decomposed it into multiple sub-fault planes along the length and width of the fault plane and forms a number of models A13, B13, A23 a, A23 b, A23 c, B23 a,B23 b and B23 c, then calculated the sub-fault’s dip of each model. In order to clarify exactly which one of the fault models is closest to the real fault model, the fault slip was carried out for each model in turn, then compared the surface displacement of each model with GPS observations. The results show that B23 c model with high dip in shallow and small dip in deep is the best model, the lengths of each subfault of Dujiangyan fault from south to north are 33 km, 21 km and 46 km, respectively. When the depth of the fault bottom is about 11 km, the dip angles are 70.56°, 67.41° and 45.55°.When the depth of the fault bottom is about 30 km, The fault dip angles are 44.55°, 29.18° and 44.25°.

关键词： focal mechanism solution seismic moment tensor fault dip fault fine structure Dujiangyan fault

Dysprosium Modification of Cobalt Ferrite Ionic Magnetic Fluids

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Journal of China University of Mining and Technology 2005年第4期15卷 354-356页

作者： JIANG Rong-li LIU Yong-chao GENG quan-rong ZHAO Wen-tao School of Chemical Engineering and Technology China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Dysprosium composite cobalt ferrite ionic magnetic fluids were prepared by precipitation in the presence of Tri-sodium citrate. Influence of dysprosium modification on magnetic property is studied. The result shows that magnetic response toward exterior magnetic field can be improved by adding Dy3+. Studies also show that the increase of reaction temperature may improve the modification effect of dysprosium. By adding dysprosium ions, the average diameter of the magnetic nanoparticles will be decreased evidently. It is clear that the particles appear as balls. Cobalt ferrite with sizes of 12-15 nm, rare earth composite cobalt ferrite with sizes of 6-8 nm.

关键词： cobalt ferrite magnetic fluids dysprosium modification mechanism magnetic property