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Two-dimensional nanosheets as building blocks to construct three-dimensional structures for lithium storage

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Journal of Energy Chemistry 2018年第1期27卷 128-145页

作者： Di Zhang Shuai Wang yang ma Shubin yang Key Laboratory of Aerospace Advanced materials and Performance of Ministry of Education School of Materials Science & Engineering Beihang University

2D nanosheets such as graphene, silicene, phosphorene, metal dichalcogenides and MXenes are emerging and promising for lithium storage due to their ultrathin nature and corresponding chemical/physical properties. However, the serious restacking and aggregation of the 2D nanosheets are still hampering their applications. To circumvent the issues of 2D nanosheets, one efficient strategy is to construct 3D structures with hierarchical porous structures, good chemical/mechanical stabilities and tunable electrical conductivities. In this review, we firstly focus on the available synthetic approaches of 3D structures from 2D nanosheets, and then summarize the relationships between the microstructures of 3D structures built from 2D nanosheets and their electrochemical behaviors for lithium storage. On the basis of above results, some challenges are briefly discussed in the perspective of the development of various functional 3D structures.

关键词： NanosheetsAtomic layers Graphene Three-dimensional structures Lithium ion batteries

Catalytic combustion of soot particulates over La_(2-x)K_xNiMnO_6 catalysts

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Journal of Natural Gas Chemistry 2011年第4期20卷 384-388页

作者： Wenjuan Shan Jiali yang Lihua yang Na ma Institute of Chemistry for Functionalized materials College of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 Liaoning China

Nanosized La2-xKxNiMnO6 catalysts with ABO3 type perovskite-like structure were prepared by auto-combustion method using citric acid as a ligand to control particle size and *** structures and properties of these perovskite-like oxides were investigated by X-ray powder diffraction（XRD）and temperature-programmed reduction（TPR）.The catalytic activities for soot combustion were evaluated by temperature- programmed oxidation（TPO）with pure O2 and O2/NOx as oxidant,*** the La2-xKxNiMnO6 catalysts,the partial substitution of K at A-site leads to an increase of the concentrations of high valence cation and oxygen vacancy,which enhance the catalytic activity for soot *** optimal substitution amount of K was equal to x=0.4 among these ***（peak temperature）in O2-TPO profile was 420-C and Tp in O2/NOx-TPO profile was 370-C over La1.6K0.4NiMnO6 catalyst for soot particulates combustion under loose contact conditions between catalyst and soot.

关键词： soot oxidation La2-xKxNiMnO6 perovskite-like active oxygen

Allogeneic hematopoietic stem cell transplantation in a 3-year-old boy with congenital pyruvate kinase deficiency: A case report

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World Journal of Clinical Cases 2021年第12期9卷 2916-2922页

作者： Zhong-yang ma Xue yang Department of Pediatrics Key Laboratory of Birth Defects and Related Diseases of Women and ChildrenWest China Second University HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND The understanding regarding genetic variation,pathophysiology,and complications associated with pyruvate kinase deficiency(PKD)in red blood cells has been explained largely,and supportive treatment is currently the main management *** managements,including transplantation and genome editing,supplying for substitute dugs of the pyruvate kinase,are all under *** SUMmaRY We herein report a 3-year-old boy with severe transfusion-dependent PKD cured by unrelated identical peripheral blood stem cell transplantation(PBSCT).Hemoglobin was corrected to a normal level by gene correction after PBSCT,with no complication related to the *** Hematopoietic stem cell transplantation could be a substitute for transfusiondependent PKD.

关键词： Pyruvate kinase deficiency Transfusions Hematopoietic stem cell transplantation Peripheral blood stem cells Peripheral blood stem cell transplantation Case report

OPTIMIZATION OF DISPLACEMENT AND GLIDING PATH AND IMPROVEMENT OF PERFORmaNCE FOR AN UNDERWATER THERmaL GLIDER

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Journal of Hydrodynamics 2010年第5期22卷 618-625页

作者： yang Hai ma Jie State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200030 China

The underwater thermal glider utilizes ocean thermal energy to change its buoyancy, which enables it to ascend and descend. A Phase Change material （PCM） as the working fluid inside the thermal engine tubes is sensitive to the surrounding seawater temperature, whose effects are different with the various displacements and gliding angles of the glider. In this paper, the effects of the displacement and the gliding angle on the performance of the thermal engine were studied numerically and experimentally. On this basis, the ways to eliminate the negative effect of a thermocline on the performance of the thermal engine were obtained. The results show that the displacement and gliding angle affect the transition time of the PCM. There exist the threshold values of the displacement and gliding angle for the normal work of thermal engine. There are two means of eliminating the negative effect of a thermocline on the performance of the thermal engine and improving glider performance： one is to increase the displacement, and the other is to decrease the absolute value of the gliding angle. There is also another better way to improve glider performance.

关键词： displacement gliding angle underwater thermal glider Phase Change material (PCM)

Morphology and structure of BzK-selected galaxies at z ～ 2 in the CANDELS-COSMOS field

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Research in Astronomy and Astrophysics 2015年第6期15卷 819-827页

作者： Guan-Wen Fang Zhong-yang ma yang Chen Xu Kong Institute for Astronomy and History of Science and Technology Dali University Key Laboratory for Research in Galaxies and Cosmology University of Science and Technology of China Chinese Academy of Sciences Center for Astrophysics University of Science and Technology of China SISSA via Bonomea 265 I-34136 Trieste Italy

Utilizing a BzK-selecfion technique, we obtain 14 550 star-forming galaxies （sBzKs） and 1763 passive galaxies （pBzKs） at z - 2 from the K-selected （KAB 〈 22.5） catalog in the COSMOS/UltraVISTA field. The differential number counts of sBzKs and pBzKs are consistent with the results from the literature. Compared to the observed results, semi-analytic models of galaxy formation and evolution provide too few （many） galaxies at the high （low） mass end. Moreover, we find that the star formation rate and stellar mass of sBzKs follow the relation of the main sequence. Based on HST/Wide Field Camera 3 F160W imaging, we find a wide range of morphological diversities for sBzKs, from diffuse to early-type spiral structures, with relatively high M20, large size and low G, while pBzKs have elliptical-like compact morphologies with lower M20, smaller size and higher G, indicating a more concentrated and symmetric spatial extent of stellar population distribution in pBzKs than sBzKs. Furthermore, the sizes of pBzKs （sBzKs） at z - 2 are on average two to three （one to two） times smaller than those of local early-type （late-type） galaxies with similar stellar mass. Our findings imply that the two classes have different evolution models and mass assembly histories.

关键词： galaxies evolution -- galaxies fundamental parameters -- galaxies structure -- galaxies high-redshift

Morphology and structure of extremely red objects at z ～ 1 in the CANDELS-COSMOS field

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Research in Astronomy and Astrophysics 2015年第6期15卷 811-818页

Using high-resolution HST/Wide Field Camera 3 F125W imaging from the CANDELS-COSMOS field, we report the structural and morphological properties of extremely red objects （EROs） at -z 1. Based on the UVJ color criteria, we sepa- rate EROs into two types： old passive galaxies （OGs） and dusty star-forming galaxies （DGs）. For a given stellar mass, we find that the mean size of OGs （DGs） is smaller by a factor of - 2 （1.5） than that of present-day early-type （late-type） galaxies at a rest-frame optical wavelength. We derive the average effective radii of OGs and DGs, corresponding to 2.09 ± 1.13 kpc and 3.27± 1.14 kpc, respectively. Generally, the DGs are heterogeneous, with mixed features including bulges, disks and irregular structures, with relatively high M20, large size and low G. By contrast, OGs have elliptical-like compact morphologies with lower M20, smaller size and higher G, indicating a more concentrated and symmetric spatial extent of the stellar population distribution in OGs than DGs. These findings imply that OGs and DGs have different evolutionary processes, and that the minor merger scenario is the most likely mechanism for the structural properties of OGs. However, the size evolution of DGs is possibly due to the secular evolution of galaxies.

关键词： galaxies evolution -- galaxies: fundamental parameters -- galaxies structure -- galaxies high-redshift

matched-field localization using a virtual time-reversal processing method in shallow water

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Chinese Science Bulletin 2011年第8期56卷 743-748页

作者： ZHANG TongWei yang KunDe ma YuanLiang College of marine Northwestern Polytechnical University Xi'an 710072 China

Time-reversal processing(TRP) is an implementation of matched-field processing(MFP) where the ocean itself is used to construct the replica *** paper introduces virtual time-reversal processing(VTRP) that is implemented electronically at a receiver array and simulates the kind of processing that would be done by an actual TRP during the reciprocal propagation *** is a forward propagation process,while VTRP is a back-propagation process,which exploits the properties of reciprocity and superposition and is realized by weighting the replica surface with the complex conjugate of the data received on the corresponding element,followed by summation of the processed received *** number of parabolic equation computational grids of VTRP is much smaller than that of MFP in a range-dependent *** a result,the localization surface of VTRP can be formed faster than its MFP counterpart in a range-dependent *** performance of VTRP for source localization is validated through numerical simulations and data from the Mediterranean Sea.

关键词：匹配场处理时间反转定位方法虚拟多功能一体机浅水传播过程定位表面

Kinetics of non-catalyzed hydrolysis of tannin in high temperature liquid water

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第5期9卷 401-406页

作者： Li-li LU Xiu-yang LU Nan ma Institute of Pharmaceutical Engineering Department of Chemical and Biochemical Engineering Zhejiang University Hangzhou 310027 China

High temperature liquid water(HTLW) has drawn increasing attention as an environmentally benign medium for organic chemical reactions,especially acid-/base-catalyzed reactions. Non-catalyzed hydrolyses of gallotannin and tara tannin in HTLW for the simultaneous preparation of gallic acid(GA) and pyrogallol(PY) are under investigation in our laboratory. In this study,the hydrolysis kinetics of gallotannin and tara tannin were determined. The reaction is indicated to be a typical consecutive first-order one in which GA has formed as a main intermediate and PY as the final product. Selective decomposition of tannin in HTLW was proved to be possible by adjusting reaction temperature and time. The present results provide an important basic data and reference for the green preparation of GA and PY.

关键词： High temperature liquid water Gallotannin Tara tannin Non-catalyzed hydrolysis Kinetics

Job shop scheduling problem based on DNA computing

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Journal of Systems Engineering and Electronics 2006年第3期17卷 654-659页

作者： Yin Zhixiang Cui Jianzhong yang Yan ma Ying Dept. of mathematics and Physics Anhui Univ. of Science and Technology Huainan 232001 P.R. China

To solve job shop scheduling problem, a new approach-DNA computing is used in solving job shop scheduling problem. The approach using DNA computing to solve job shop scheduling is divided into three stands. Finally, optimum solutions are obtained by sequencing A small job shop scheduling problem is solved in DNA computing, and the ＂operations＂ of the computation were performed with standard protocols, as ligation, synthesis, electrophoresis etc. This work represents further evidence for the ability of DNA computing to solve NP-complete search problems.

关键词： DNA computing job shop scheduling problem weighted tournament.