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A Zn(II) 5-Aminoisophthalate Coordination Polymer

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Chinese Journal of Structural Chemistry 2007年第5期26卷 529-532页

作者： TANG En DAI yu-Mei LI Zhao-Ji WANG Xiao-Qin YIN Pei-Xiu YAO yuan-Gen State Key Laboratory of Structural Chemistry Fujian Institute of Research on theStructure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 China College of Chemistry ＆ Material Science FujianNormal University Fuzhou Fujian 350007 China

The title compound, [Zn（AIP）（4,4-bipy）0.5（H2O）]n·0.75nH2O 1, was synthesized via the hydrothermal reaction of Zn（OAc）2 with 5-aminoisophthalic acid （H2AIP） and characterized by elemental analysis and infrared spectra. The complex crystallizes in monoclinic system, space group P21/c with a = 12.672（1）, b = 7.6557（4）, c = 16.181（1）A, β = 109.187（2）°, v = 1482.6（2）A^3, Z = 1, C52H52N8O23Zn4, Mr = 1418.58, Dc = 1.589 g/cm^3, F（000） = 724 and μ（MoKα） = 1.685mm-1. The final R = 0.0702 and wR = 0.1524 for 1847 observed reflections with Ⅰ〉 2σ（Ⅰ）, and R = 0.0873 and wR = 0.1664 for all data. X-ray diffraction studies reveal that the title compound has an interesting 2D microporous architecture with guest water molecules inside the channel.

关键词： hydrothermal reaction crystal structure Zn(Ⅱ) complex 5-aminoisophthalic acid

Thermal fatigue behavior of K125L superalloy

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Rare Metals 2016年第2期35卷 172-176页

作者： Li-Kui Ning Zhi Zheng Feng-Quan An Song Tang Jian Tong Hui-Si Ji Hui-Wen yu Institute of Metal Research Chinese Academy of Sciences Material Preparation Company Northern Heavy Industries Group Co. Ltd.

The thermal fatigue behavior of K125 L superalloy at the peak temperature of 1,050 °C was investigated by optical microscope（OM）, X-ray diffraction（XRD）, and scanning electron microscope（SEM）. The experimental results show that the crack initiation sites of tested alloys are at the v-notch tip and the v-notch tip propagates by way of continuous cracking along grain boundaries. The formation of high-temperature oxides and MC carbides accelerates the crack propagation, and no secondary carbides precipitate out. Oxides between cracks are mainly the Al2O3 as well as Cr_2O_3, and carbides are Ta-rich and Tirich MC carbides.

关键词： K125L superalloy Thermal fatigue High temperature oxidation Carbides

variation of Ti valence with Lithium Content in Lithiated/Delithiated Li_(4)Ti_(5)O_(12) Studied by X-Ray Absorption near the Edge Structure

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Chinese Physics Letters 2013年第3期30卷 108-111页

作者： yu Peng-Fei CUI Zhong-Hui MENG Jian-Wei GUO Xiang-Xin State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050 State Key Laboratory of ASIC and System Department of MicroelectronicsFudan UniversityShanghai 200433

Synchrotron-based x-ray absorption near-edge structure(XANES)spectroscopy is applied to investigate the variation of Ti valence in the discharge and charge processes of Li_(4)Ti_(5)O_(12).Through analysis of the XANES data,the average valence of Ti can be calculated,which allows quantitative determination of the ratios of Ti^(3+)/Ti^(4+) as a function of Li content in the *** is found that the ratios in the composites of Li_(4)Ti_(5)O_(12)/acetylene black(AB)-carbon are larger than those in Li_(4)Ti_(5)O_(12)/Ag/AB-carbon after the discharge to 1.1 v,indicating a larger amount of Li inserted into the former than that into the *** finding provides a good explanation for the fact that the Li_(4)Ti_(5)O_(12)/AB-carbon samples exhibit larger storage capacities than the Li_(4)Ti_(5)O_(12)/Ag/AB-carbon ones prepared in this work,concerning the larger Ti^(3+)/Ti^(4+) ratio and the larger amount of Li^(+) inserted in the electrode for satisfying the charge neutralization requirement.

关键词： Li_(4)Ti_(5)O_(12) composites XANES

Towards high degree of c-axis orientation in MgB_(2) bulks

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Journal of Magnesium and Alloys 2022年第8期10卷 2173-2184页

作者： M.A.Grigoroscuta G.v.Aldica M.Burdusel v.Sandu A.Kuncser I.Pasuk A.M.Ionescu T.S.Suzuki O.vasylkiv P.Badica National Institute of Materials Physics 405A Street AtomistilorMagurele 077125Romania National Institute for Materials Science 1-2-1 SengenIbarakiTsukuba 305-0047Japan

The paper presents fabrication and characterization of spark plasma sintered textured(001) MgB_(2)with a record degree of orientation of about 40% and 16% by high-energy ultra-sonication and slip casting in high magnetic field(12 T) and 0 T magnetic field, *** characterization was performed by X-ray diffraction, and electron microscopy. The analysis revealed unexpected preferred orientation also in the MgO secondary phase due to the epitaxial growth of(111) MgO on(001) MgB_(2). The influence of oriented microstructure on the superconducting characteristics expressed by critical current density(J_(c)), irreversibility field(H_(irr)), and on the pinning properties were assessed. High anisotropy versus sample orientation in applied magnetic field, H, was observed for J_(c), Hirr, pinning activation energy(U^(*))extracted from relaxation measurements. The zero-field critical current, J_(c0)and F_(p),maxare weakly or not dependent on the direction of H,while the other indicated parameters are significantly influenced. Results enable control of superconducting parameters by further optimization of microstructure through MgB_(2) texturing as a novel and viable strategy for development of bulk MgB2with enhanced properties when taking advantage of its anisotropy.

关键词： Textured MgB_(2)bulk Slip casting Spark plasma sintering Critical current density Pinning force Pinning activation energy

High-frequency capacitance-voltage characteristics of the heterogeneous structure based on the model of spherical semiconductor particles in a dielectric

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Journal of Advanced Dielectrics 2016年第3期6卷 42-49页

作者： A.S.Tonkoshkur A.v.Ivanchenko Department of Physics Electronics and Computer Systems Oles Honchar Dnipropetrovsk National University 72 Gagarin Ave.Dnepropetrovsk 49010Ukraine

The dependence of the parameters of the capacitance effect in heterogeneous dispersed two-component structures based on semiconductors from the bulk fraction of the semiconductor component is *** used method for determining the changes of the energy bands bending on the surface of the spherical semiconductor particle by applying dc electric field allowed to calculate the changes of the dipole moment and effective(taking into account the polarization of the free charge)dielectric constant of this semiconductor *** result allowed to use the known models of the dielectric constant of two-component structures for the description of the capacitance field effect in the heterogeneous *** relations allowing to estimate the value of the bulk donor concentration in the semiconductor component of the matrix of the heterogeneous system and the statistical mixture have been *** approbation of the obtained calculation relations to evaluate the donor concentration in the ZnO grains of zinc oxide varistor ceramics leads to the correct values that are consistent with estimates of other methods and *** is established that the sensitivity of the relative dielectric constant to the applied dc electric field is dependent on the bulk fraction of the semiconductor particles in the heterogeneous *** bulk fraction of the semiconductor particles significantly affects on the dielectric constant beginning with the values from0:8 for matrix systems and0:33 for statistical mixtures.

关键词： Heterogeneous structure capacitance-voltage characteristic dipole moment donor concentration varistor ceramics

A Navigation Algorithm for a Non-holonomic Mobile Robot Navigated by a Sensor Network in Dynamic Cluttered Environments 36

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A Navigation Algorithm for a Non-holonomic Mobile Robot Navi...

Emerging Challenges in Atolls for Sustainable Groundwater Management

第36届中国控制会议

作者： Hang Li Andrey v.Savkin School of Electrical Engineering and Telecommunications University of New South Wales

ISBN: (纸本)9781538629185

In this paper,we propose a discrete-time navigation algorithm for a non-holonomic mobile robot.A sensor network,which consists of some range finders,is deployed in a planar environment to detect static and moving *** robot or a server obtains the real-time local maps from sensor nodes and calculates a temporarily safe path from the robot’s current position to a given *** generated path is updated every time step and the robot tracks it to the target and avoids the obstacles and undetected *** computer simulations confirm the expected performance of the proposed algorithm.

关键词： Obstacle Avoidance Mobile Robots Dynamic Environments Sensor Network Safe Robot Navigation

来源： cnki会议评论

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地学前缘 2009年第S1期16卷 22-23页

作者： Pallavi Banerjee v.S.Singh National Geophysical Research Institute

Tropical islands,about 50000 in number,are distributed over the Pacific,Indian and Atlantic *** groundwater resources in the form of lens shaped aquifers,in atolls,are extremely vulnerable to natural processes and human *** increasing population on these islands has worsened the groundwater demand supply ratio significantly. This deteriorating ground water condition has come

关键词： coral islands groundwater numerical modeling groundwater level sea level

New insights into acquired endocrine resistance of breast cancer

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Cancer Drug Resistance 2019年第2期2卷 198-209页

作者： Ping Fan v.Craig Jordan Department of Breast Medical Oncology The University of Texas MD Anderson Cancer CenterHoustonTX 77030USA.

The translational research strategy of targeting estrogen receptorα(ERα)positive breast cancer and then using long term anti-hormone adjuvant therapy(5-10 years)has reduced recurrences and ***,resistance continues to occur and improvements are required to build on the success of tamoxifen and aromatase inhibitors(AIs)established over the past 40 *** translational research has described the evolution of acquired resistance of breast cancer cell lines to long term estrogen deprivation that parallels clinical experience over ***,recent reports have identified mutations in the ERαobtained from the recurrences of AI treated *** mutations allow the ERαto activate without ligands and auto stimulate metastatic tumor ***,the new biology of estrogen-induced apoptosis in acquired resistant models in vitro and in vivo has been interrogated and applied to clinical *** and stress are emerging concepts occurring in the process of acquired resistance and estrogen-induced apoptosis with different *** this review,we will present progress in the understanding of acquired resistance,focus on stress and inflammatory responses in the development of acquired resistance,and consider approaches to create new treatments to improve the treatment of breast cancer with endocrine resistance.

关键词： Estrogen receptorα endocrine resistance endoplasmic reticulum stress estrogen-induced apoptosis breast cancer

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v2M系统分时电价博弈研究

仪器仪表学报 2016年第1期37卷 200-207页

作者：余岳粟梅孙尧韩华中南大学信息科学与工程学院长沙410083

目前,传统的静态电价联动模型已经很难描述复杂的含有电动汽车的微电网市场,v2M系统的需求管理和电价优化有待深入的研究。本文根据含有电动汽车的微电网的并网工作模式,运用博弈论描述含有电动汽车的微电网中各个主体的经济行为,提出... 详细信息

目前,传统的静态电价联动模型已经很难描述复杂的含有电动汽车的微电网市场,v2M系统的需求管理和电价优化有待深入的研究。本文根据含有电动汽车的微电网的并网工作模式,运用博弈论描述含有电动汽车的微电网中各个主体的经济行为,提出一种更符合实际的基于博弈均衡的分时电价最优定价策略的微电网运行优化调度方法,建立含有电动汽车的微电网系统电价博弈场景,并且严格证明了场景中系统NE的存在性,求取出博弈场景的NE。通过算例分析,结果证明了博弈模型的有效性,研究结果对v2M系统分时电价定价提供一种新的途径。

关键词： v2M 分时电价优化博弈论