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Structure and Growth Mechanism of V/Ag Multilayers with Different Periodic Thickness Fabricated by Magnetron Sputtering Deposition

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Journal of Materials Science & Technology 2014年第10期30卷 1012-1019页

作者： hongxiu Zhang Feng ren Mengqing hong Xiangheng xiao Guangxu Cai Changzhong Jiang School of Physics and Technology Center for Ion Beam Applicationand Center for Electron MicroscopyWuhan University

V/Ag multilayers with different periodic thicknesses were fabricated by magnetron sputtering deposition. The columnar structure and the orientation relationship of the multilayers were investigated by transmission electron microscopy, high resolution transmission electron microscopy, selected-area electron diffraction and X-ray diffraction. It was found that the multilayered structure became flatter as increasing individual layer thickness from 2 to 6 nm, and then became waved as the individual layer thickness increases to 8 nm. At the beginning of the growth, the morphology of the multilayers with small periodic thickness was influenced mainly by thermodynamic instabilities, and the morphology of the multilayers with larger periodic thickness was mainly influenced mainly by the columnar growth of V. When the waved interfaces were formed, the continuum growth of the multilayers was also influenced by the shadowing effect and the finite atomic size effect. All of these factors resulted in the columnar structure of the multilayers. Multilayers with small periodic thickness presented strong orientation relationship. Nano-hardness tests indicated that multilayers with flat sublayer morphology and clear interfaces exhibited larger hardness.

关键词： Multilayers Interfaces Columnar structure Transmission electron microscopy

Synthesis and Characterization of pH-Responsive Block Copolymers with Primary Amine Groups

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Chemical Research in Chinese Universities 2013年第2期29卷 389-395页

作者： WANG hong ZHU Yue-jun ren xiao-na ZHANG hong TAN Ye-bang Key Laboratory of Special Functional Aggregated Materials Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China State Key Laboratory of Offshore Oil Exploitation Technology Research Department of Research Center China National Offshore Oil Corporation Beijing 100027 P R. China

A new pH-responsive block copolymer, methoxy poly（ethylene glycol）-b-poly[5-methacrylamido- pentylamine hydrochloride]（mPEG-b-PMAAPA） was synthesized and characterized in this paper. The monomer 5-methacrylamido-pentylamine hydrochloride（MAAPA） and the macroinitiator（mPEG-ACVA） were synthesized, re- spectively, and mPEG-b-PMAAPA was then obtained by free radical polymerization. The structure and molecular weight of mPEG-b-PMAAPA were cont]rmed by hydrogen nuclear magnetic resonance（~H NMR） spectroscopy and gel permeation chromatography with multiangle laser light scattering（GPC-MALLS） measurements. At a low pH, it is hydrophilic due to the protonation of the primary amine groups. With increasing pH value, deprotonation occurs and the hydrophobicity of PMAAPA block increases. This molecular feature leads to interesting aggregation behavior of mPEG-b-PMAAPA in aqueous solutions at different pH values as revealed by dynamic light scattering（DLS） measurements, transmission electron microscopy（TEM） observations and resonance light scattering（RLS） measure- ments.

关键词： Block copolymer Polyamine pH-Responsive Water soluble copolymer

Overexpression of fibroblast growth factor 13 ameliorates amyloid-β-induced neuronal damage

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Neural Regeneration Research 2023年第6期18卷 1347-1353页

作者： Ruo-Meng Li Lan xiao Ting Zhang Dan ren hong Zhu Department of Traditional Chinese Medicine The Third Xiangya Hospital of Central South UniversityChangshaHunan ProvinceChina

Previous studies have shown that fibroblast growth factor 13 is downregulated in the brain of both Alzheimer’s disease mouse models and patients,and that it plays a vital role in the learning and ***,the underlying mechanisms of fibroblast growth factor 13 in Alzheimer’s disease remain *** this study,we established rat models of Alzheimer’s disease by stereotaxic injection of amyloid-β(Aβ_(1-42))-induced into bilateral *** also injected lentivirus containing fibroblast growth factor 13 into bilateral hippocampus to overexpress fibroblast growth factor *** expression of fibroblast growth factor 13 was downregulated in the brain of the Alzheimer’s disease model *** overexpression of fibroblast growth factor 13,learning and memory abilities of the Alzheimer’s disease model rats were remarkably *** growth factor 13 overexpression increased brain expression levels of oxidative stress-related markers glutathione,superoxide dismutase,phosphatidylinositol-3-kinase,AKT and glycogen synthase kinase 3β,and anti-apoptotic factor ***,fibroblast growth factor 13 overexpression decreased the number of apoptotic cells,expression of pro-apoptotic factor BAX,cleaved-caspase 3 and amyloid-βexpression,and levels of tau phosphorylation,malondialdehyde,reactive oxygen species and acetylcholinesterase in the brain of Alzheimer’s disease model *** changes were reversed by the phosphatidylinositol-3-kinase inhibitor *** findings suggest that overexpression of fibroblast growth factor 13 improved neuronal damage in a rat model of Alzheimer’s disease through activation of the phosphatidylinositol-3-kinase/AKT/glycogen synthase kinase 3βsignaling pathway.

关键词： AKT Alzheimer’s disease amyloid-β apoptosis cognitive dysfunction fibroblast growth factor 13 glycogen synthase kinase 3β neuronal damage oxidative stress phosphatidylinositol-3-kinase

Emergy evaluation of aromatics production from methanol and naphtha

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Chinese Journal of Chemical Engineering 2022年第6期35卷 134-141页

作者： Siyue ren xiao Feng School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China

Aromatics are traditionally produced by the catalytic reforming of ***,with the demand of aromatics increasing and the reserves of petroleum resources declining,measures should be made to reduce the dependence of aromatics production on petroleum ***-to-aromatics is proved to be an effective way to replace traditional naphtha-to-aromatics *** order to compare the economic and environmental performance of aromatics production from naphtha and methanol,this paper carries out an emergy evaluation for each system by sorting out the simulation and literature *** on the emergy data collected,the emergy indices of each system are *** results show that the sustainabilities of methanol-to-aromatics systems are higher than that of the naphtha-toaromatics system,indicating the advantages of aromatics production from *** the methanol-to-aromatics systems,the aromatics from biomass-methanol system has the highest sustainability,indicating that the biomass based methanol-to-aromatics system is worth *** sustainability indexes of methanol-to-aromatics systems based on coal and coke oven gas are less than 1,which means ***,the sustainability of natural gas based system is slightly higher than *** economic and environmental benefits of these systems can be optimized by improving resource utilization and reducing investment ***,the combination of different raw materials for methanol production should be considered.

关键词： Aromatics production Naphtha Methanol Emergy Sustainability

Orbitronics for energy-efficient magnetization switching

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Science China(Information Sciences) 2025年第1期 398-399页

作者： Yuxuan YAO Daoqian ZHU Qingtao XIA Jianing LIANG Yuhao JIANG Zhiyang PENG Jiaxu LI Chen xiao renyou XU Wenwen WANG Xiantao SHANG Shiyang LU Dapeng ZHU hong-Xi LIU Kaihua CAO Weisheng ZHAO Fert Beijing Institute School of Integrated Circuit Science and Engineering Beihang University National Key Lab of Spintronics Institute of International Innovation Beihang University Qingdao Research Institute Beihang University Truth Memory Corporation

Spin-orbit torque （SOT）,as a promising writing method for magnetic random-access memory （MRAM）,has garnered widespread interest for over a decade [1].Heavy metals,such as β-W,have been broadly adopted as spin current sources,but suffer from phase change at a limited thickness,resulting in a dramatic reduction of the charge-tospin conversion efficiency θSH[2].The thickness limitation leads to stringent etching conditions and large distribution among devices,posing challenges for simultaneously satisfying SOT efficiency,etching-stop margins,and back-end-ofline （BEOL） compatibility.

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Current Flows in Pulsar Magnetospheres

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Chinese Journal of Astronomy and Astrophysics 2006年第2期6卷 217-226页

作者： ren-Xin Xu xiao-hong Cui Guo-Jun Qiao Department of Astronomy School of Physics Peking University Beijing 100871

The global structure of current flows in pulsar magnetosphere is investigated, with rough calculations of the circuit elements. It is emphasized that the potential of the critical field lines （the field lines that intersect the null surface at the light cylinder radius） should be the same as that of interstellar medium, and that pulsars whose rotation axes and magnetic dipole axes are parallel should be positively charged, in order to close the pulsar＇s current flows. The statistical relation between the radio luminosity and pulsar＇s electric charge （or the spindown power） may hint that the millisecond pulsars could be low-mass bare strange stars.

关键词： pulsars: general - stars: neutron - dense matter

Ectopic adrenal cortical adenoma in the gastric wall:Case report

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World Journal of Gastroenterology 2013年第5期19卷 778-780页

作者： Pei-Tu ren hong Fu xiao-Wen He Department of General Surgery Shaoxing People's Hospital Shaoxing Hospital of Zhejiang University

Ectopic adrenal cortical neoplasms are extremely rare. Ectopic adrenocortical tissue can be found in locations such as the celiac axis,the broad ligament,the adnexa of the testes,and the spermatic cord;however,they rarely involve the *** report an unusual case of a patient with an ectopic adrenal cortical adenoma in the gastric *** patient was a 72-year old female admitted to our hospital with upper abdominal *** examination revealed tenderness below the xiphoid *** computed tomography and fibergastroscopy revealed a mass on the lesser curvature side of the gastric antrum;it was initially diagnosed as a gastric stromal *** adequate preparation,the patient underwent *** the procedure,we found a 30 mm×30 mm mass with medium density in the lesser curvature near the gastric antrum within the *** immunohistochemistry examination, we corrected the diagnosis to an ectopic adrenal cortical adenoma;the tumor was nonfunctional.

关键词： Ectopic adrenal cortical neoplasms Adrenal adenoma Stomach Adult Nonfunctional adenoma

Phase equilibria of low-Ni side in Nb-Ni-Ti system at 1100℃

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Rare Metals 2020年第8期39卷 936-941页

作者： hong-xiao Li Zhi-Chao Li Yu-Ping ren Min Jiang Gao-Wu Qin Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationNortheastern UniversityShenyang 110819China

The phase equilibria related to liquid phase in low-Ni side of Nb-Ni-Ti system at 1100℃were investigated through scanning electron microscope(SEM),electron probe micro-analyzer(EPMA),X-ray diffraction(XRD)and differential scanning calorimetry(DSC).The results show that there exists liquid phase in equilibrium with continuous solid solution(Nb,βTi)and compound TiNi in low-Ni side of Nb-Ni-Ti system at 1100℃.The liquid phase region originates from low-Ni side of binary TiNi system and extends to 9.4 at%Nb in isothermal section of Nb-Ni-Ti phase *** solid solubility of Nb in binary compound TiNi is about 10.6 at%.At 1100℃,there exist two three-phase regions consisting of liquid+(Nb,βTi)+TiNi and(Nb,βTi)+TiNi+X_B in Nb-Ni-Ti system,where X_B is the compound with hexagonal structure and composition of 32.8 Nb-44.5 Ni-22.7 *** wide two-phase region(Nb,βTi)+TiNi exists between these two three-phase *** this two-phase region,Ti content in continuous solid solution(Nb,βTi)varies from6.6 at%to 25.7 at%,but Ni content is almost the same,which is about 4.0 at%.The eutectic transformation L■(Nb,βTi)+TiNi takes place at about 1138℃in Nb-Ni-Ti ternary system.

关键词： Nb-Ni-Ti system Phase equilibrium Liquid phase Solid solubility

先天性右侧椎基底动脉发育不良致基底动脉尖综合征1例

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中华脑血管病杂志（电子版） 2008年第4期2卷 196-198页

作者：常嵘杜芳赵钢李一青任晓红西安电力中心医院脑病科 710032 第四军医大学西京医院神经内科

基底动脉尖综合征是一种特殊类型的椎基底动脉系统血管病。本文报道了1例因先天性血管发育不良导致的基底动脉尖综合征病例,结合相关文献,对该病的临床表现和诊断进行了回顾。

关键词：椎基底动脉发育不良基底动脉尖综合征临床分析治疗方法