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人参养荣汤联合穴位贴敷对冠心病PCI术后患者血脂、心功能和Th1/Th2型细胞因子的影响

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现代生物医学进展 2024年第3期24卷 475-479页

作者：侯令之于丹郭蜜张姚袁小兰湖南中医药大学第一附属医院心血管内科湖南长沙410000

目的:观察人参养荣汤联合穴位贴敷对冠心病经皮冠状动脉介入术(PCI)后患者血脂、心功能和辅助性T细胞1(Th1)/Th2型细胞因子的影响。方法:选取2020年2月~2022年12月期间在我院接收的冠心病PCI术后患者142例。采用双色球法将患者分为对照... 详细信息

目的:观察人参养荣汤联合穴位贴敷对冠心病经皮冠状动脉介入术(PCI)后患者血脂、心功能和辅助性T细胞1(Th1)/Th2型细胞因子的影响。方法:选取2020年2月~2022年12月期间在我院接收的冠心病PCI术后患者142例。采用双色球法将患者分为对照组(71例,常规西医治疗+穴位贴敷)和实验组(71例,对照组的基础上接受人参养荣汤),均治疗4周。观察并比较两组中医证候积分、心功能指标[左心室射血分数(LVEF)和每分心输出量(CO)]、血脂四项指标[三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、总胆固醇(TC)]、Th1/Th2型细胞因子[子γ干扰素(IFN-γ)、白细胞介素(IL)-2、IL-4、IL-10]。同时记录两组治疗结束半年内心血管不良事件发生率。结果:两组治疗后主症评分、次症评分、总评分下降,实验组低于照组,数据比较有差异(P0.05)。结论:人参养荣汤联合穴位贴敷用于冠心病PCI术后患者,可改善患者的血脂和心功能,调节Th1/Th2型细胞因子,促进临床转归。

关键词：人参养荣汤穴位贴敷冠心病经皮冠状动脉介入术血脂心功能 Th1/Th2型细胞因子

The Comprehensive Retrieval Method of Electromagnetic Parameters Using the Scattering Parameters of Metamaterials for Two Choices of Time-Dependent Factors

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Chinese Physics Letters 2012年第1期29卷 242-245页

作者： hou zhi-ling KONG ling-Bao JIN Hai-Bo CAO Mao-Sheng LI Xiao QI Xin School of Science Beijing University of Chemical TechnologyBeijing 100029 School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081

The electromagnetic parameters (permittivity and permeability) method,retrieved from the reflection and transmission coefficients of a slab,is *** over existing methods,including the determination of the permittivity,permeability and impedance of the slab,are expressed as explicit functions of the S parameters for both the time-dependent factors,e^(iwt) and e^(-iwt) (ω is the angular frequency of the incident electromagnetic wave),and the proper selection of the sign of impedance and the real part of the refractive ***,based on the retrieving method,the calculations of the electromagnetic parameters of the conventional-material teflon slab standard sample through the experimental data of the S parameters are performed,which confirm the validity of the technique for the retrieval of electromagnetic parameters.

关键词： impedance permittivity validity

First Principle Study of the Electronic Properties of 3C-SiC Doped with Different Amounts of Ni

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Chinese Physics Letters 2012年第7期29卷 250-253页

作者： DOU Yan-Kun QI Xin JIN Hai-Bo CAO Mao-Sheng Usman Zahid hou zhi-ling School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081 State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081 School of Science Beijing University of Chemical TechnologyBeijing 100029

The electronic properties of 3C-SiC doped with different contents of Ni are investigated by using first-principles *** is observed that the non-filled impurity energy levels in the band-gap region increase with increasing Ni content,which subsequently results in an enhancement of electrical conductivity of *** enhancement in conductivity is verified by the conductivity spectrum in which new peaks appear in the middleinfrared region,visible region,and middle-ultraviolet *** is further observed that the width and intensity of these newly appeared peaks increase with the increase of Ni *** electronic density of states exhibits the peaks crossing the Fermi level,which favors the electronic transitions and proves Ni-doped 3C-SiC to be a half-metallic *** the analysis of electron density difference and Mulliken overlap population,it is found that the covalent bonds are formed between Ni and near-by C *** features confirm that the Ni-doped 3C-SiC semiconductor is a promising material for device applications in modern day electronics.

关键词： conductivity ultraviolet filled

Different Roles of a Boron Substitute for Carbon and Silicon in β-SiC

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Chinese Physics Letters 2012年第7期29卷 214-217页

作者： Zhou Yan WANG Kun FANG Xiao-Yong hou zhi-ling JIN Hai-Bo CAO Mao-Sheng School of Science Yanshan UniversityQinghuangdao 066004 School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081

The first-principles numerical simulation is employed-to calculate the effect of replacement of carbon and silicon with boron on the electronic structure and optical properties of β-*** analysis shows that the B impurity bond lengths shrink in the case of Bsi,while they expand with reference to *** addition,Bsi contains C-C,Si-Si and B-Si *** calculated results show that the two systems of Bc and Bsi apply different *** is in accordance with the Lorentz dispersion theory while Bsi follows the Drude dispersion *** analysis and quantitative calculation are used for conductivity spectra in the infrared region.

关键词： dispersion analysis boron

Polarization Mechanism of Oxygen Vacancy and Its Influence on Dielectric Properties in ZnO

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Chinese Physics Letters 2011年第2期28卷 179-182页

作者： WANG Li-Na FANG Xiao-Yong hou zhi-ling LI Ya-Lin WANG Kun YUAN Jie CAO Mao-Sheng School of Science Yanshan UniversityQinhuangdao 066004 School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081 School of Information Engineering Central University for NationalitiesBeijing 100081

We report on the mechanism of the dielectric properties of oxygen vacancy in ZnO,using ab initio numerical simulations of oxygen vacancy on the band structure and dielectric properties,to develop photoelectric material *** is revealed that the appearance of oxygen vacancies leads to wider energy band gap,obvious blue shift and increase in the peak of dielectric function as compared to the intrinsic ZnO *** explain these unusual phenomena and analyze the dielectric changes with the mechanism of polarization in the *** is shown that the main mechanism of influencing dielectric properties is the electron displacement *** result may be helpful for development of photoelectric materials.

关键词： materials dielectric vacancy

Enhanced Ferromagnetism and Microwave Dielectric Properties of Bi0.95Y0.05FeO3 Nanocrystals

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Chinese Physics Letters 2011年第3期28卷 211-214页

作者： hou zhi-ling Zhou Hai-Feng YUAN Jie KANG Yu-Qing YANG Hui-Jing JIN Hai-Bo CAO Mao-Sheng School of Science Beijing University of Chemical TechnologyBeijing 100029 School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081

Bi_(0.95)_(0.05)FeO_(3)nanocrystals are synthesized by a hydrothermal method,and are crystallized in a rhombohedrally distorted perovskite BiFeO_(3)structure in the R3c space,with compressive lattice distortion induced by the Y substitution at Bi sites from XRD study Compared with BiFeO_(3)gained under similar conditions,the magnetic properties are greatly enhanced,with saturate magnetization of 2.3emu/g at room *** dielectric properties of Bi0.95 Y0.05FeO_(3)nanocrystals are investigated in the range of 2-18 *** Y substitution results in the increase of permeability and decrease of permittivity which are attributed to the enhanced spin relaxation of domain wall motion and the weakened electron-relaxation caused by decreasing Fe^(2+),*** changes for microwave dielectric response could lead to the excellent microwave absorption due to the improvement of the impedance match between BiFeO_(3)and air.

关键词： relaxation microwave dielectric

High-Temperature Permittivity and Data-Mining of Silicon Dioxide at GHz Band

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Chinese Physics Letters 2012年第2期29卷 200-203页

作者： YUAN Jie WEN Bo hou zhi-ling LU Ming-Ming CAO Wen-Qiang BA Chuan FANG Xiao-Yong CAO Mao-Sheng School of Information Engineering Minzu UniversityBeijing 100081 School of Material Science and Engineering Beijing Institute of TechnologyBeijing 100081 School of Science Beijing University of Chemical TechnologyBeijing 100029 School of EMPS University College DublinDublin 4Ireland School of Science Yanshan UniversityQinhuangdao 066004

The high-temperature permittivity of quartz fibre-reinforced silicon dioxide (SiO2/SiO2 ) nano-composites is studied on the basis of the multi-scale theoretical *** obtain the permittivity of the SiO2/SiO2 at high temperature,which is dependent on the temperature by *** result shows that the permittivity and loss tangent obtained by data-mining are well consistent with the measured *** high-temperature permittivity can be well predicted for SiO2/SiO2 by the as-proposed model and the data-mining method.

关键词： method permittivity SiO2/Si

Revealing effect of Al content on oxidation of novel Co-Cr-Nb-W carbide-strengthened superalloy

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Rare Metals 2024年第9期43卷 4521-4534页

作者： Chen ling Shang-Ping Li Jie hou He-Li Luo Central Iron&Steel Research Institute Beijing 100081China Beijing GAONA Materials&Technology Co. Ltd.Beijing 100081China

The high-temperature oxidation behavior of novel Co-Cr-Nb-W carbide-strengthened wear-resistance alloys with different Al contents(1wt%,2wt%and 3wt%)at 950,1000 and 1050℃was thoroughly investigated by scanning electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy and field emission electron probe *** porous property of NbC in-situ oxidation products(Nb_(2)O_(5),Co Nb_(2)O_(6)and Co_(4)Nb_(2)O_(9))induces a multi-layered oxide scale with micropores and ***-Cr-Nb-W alloy with 1 wt%Al undergoes catastrophic oxidation and spalling above 1000℃.The outward transportation of Cr and Co is effectively restrained by a continuous Al_(2)O_(3)scale formed around NbC in-situ oxidation region when Al content reaches 3 wt%.The β-Co Al in Co-Cr-Nb-W alloy with 3 wt%Al has an oxidation priority over eutectic carbides and the alloy matrix which are both enriched with Cr,thereby preventing the formation of Cr-depletion area and improving the self-healing ability of the oxide film.A slight change in Al content has a remarkable influence on the cooperative effect of Al and Cr and multiplies the antioxidant capacity of Co-Cr-Nb-W alloy above 1000℃.

关键词： High-temperature oxidation behavior Oxidation kinetics Superalloy Wear-resistant alloy Microstructure

Grain-boundary segregation and grain growth in nanocrystalline substitutional solid solution alloys

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Journal of Materials Science & Technology 2024年第1期168卷 239-249页

作者： Fawei Tang Chao hou Hao Lu zhi Zhao Xiaoyan Song Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional MaterialsMinistry of Education of ChinaBeijing University of TechnologyBeijing 100124China

A model for describing solute segregation at grain boundaries has been developed for substitutional solid solution alloys,which integrates multiple factors from atomic to microstructural scales.A concept of mo-lar Gibbs free energy of segregation was introduced to evaluate the segregating capability of the solute elements in a closed system,through which the influences of grain boundary structure,grain size,ma-terial composition,and external conditions were *** on the evaluation of various energy forms related to solute segregation and grain growth processes,the nature of the thermal stabilization of nanograin structures by solute segregation was disclosed.A criterion for the destabilization of nanostruc-tures,which is determined by the competition of the change rates between the molar Gibbs free energy of segregation and the total energy of grain boundaries with grain size,has been *** study provided guideline to achieve high-temperature stability of nanograin structures of solid solution alloys even for the weakly segregating nanocrystalline systems.

关键词： Substitutional solid solution Grain boundary segregation Thermal stabilization Solute concentration Grain size