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Chinese Physics Letters 2017年第4期34卷 83-86页

作者： han-han Lu jing-Ping Xu Lu Liu School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074

The ZrTiON gate-dielectric GaAs metal-oxide-semiconductor （MOS） capacitors with or without ZrAION as the interfacial passivation layer （IPL） are fabricated and their properties are investigated. The experimental results show that the GaAs MOS capacitor with the ZrAION IPL exhibits better interracial and electrical properties, including lower interface-state density （1.14 × 10^12 cm^-2eV^-1）, smaller gate leakage current （6.82 × 10^-5 A//cm^2 at Vfb ＋1V）, smaller capacitance equivalent thickness （1.5 nm）, and larger k value （26）. The involved mechanisms lie in the fact that the ZrAION IPL can effectively block the diffusion of Ti and O towards the GaAs surface, thus suppressing the formation of interracial Ga-/As-oxides and As-As dimers, which leads to improved interracial and electrical properties for the devices.

关键词： MOS Zr Interfacial and Electrical Properties of GaAs Metal-Oxide-Semiconductor Capacitor with ZrAlON as the Interfacial Passivation Lay

Evolution of plasticized MnO–Al2O3–SiO2-based nonmetallic inclusion in 18wt%Cr-8wt% Ni stainless steel and its properties during soaking process

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 328-339页

作者： jing Guo Xing-run Chen Shao-wei han Yan Yan han-jie Guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Jiuquan Iron and Steel Group Corporation Jiayuguan 735100China Beijing Shougang Co.Ltd. Qian'an 064400China

The properties of MnO–Al2O3–SiO2-based plasticized inclusion are likely to change during soaking process due to its low melting point. In this study, the evolution of the MnO–Al2O3–SiO2-based inclusion of 18 wt%Cr-8 wt%Ni stainless steel under isothermal soaking process at 1250°C for different times was investigated by laboratory-scale experiments and thermodynamic analysis. The results showed that the inclusion population density increased at the first stage and then decreased while their average size first decreased and then increased. In addition, almost no Cr2O3-concentrated regions existed within the inclusion before soaking, but more and more Cr2O3 precipitates were formed during soaking. Furthermore, the plasticity of the inclusion deteriorated due to a decrease in the amount of liquid phase and an increase in the high-melting-pointphase MnO–Cr2O3 spinel after the soaking process. In-situ observations by high-temperature confocal laser scanning microscopy(CLSM) confirmed that liquid phases were produced in the inclusions and the inclusions grew rather quickly during the soaking process. Both the experimental results and thermodynamic analysis conclude that there are three routes for inclusion evolution during the soaking process. In particular, Ostwald ripening plays an important role in the inclusion evolution, i.e., MnO–Al2O3–SiO2-based inclusions grow by absorbing the newly precipitated smaller-size MnO–Cr2O3 inclusions.

关键词： nonmetallic inclusion soaking process Ostwald ripening stainless steel

Hydrogen bond-mediated polyoxometalate-based metal-organic networks for efficient and selective oxidation of aryl alkenes to aldehydes

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Tungsten 2022年第2期4卷 109-120页

作者： Wen-jing Cui Si-meng Zhang Ze-Yu Tian Chen Li Yi-meng Wang Bo-Rong Yu Yuan-Yuan Ma Zhan-Gang han Hebei Key Laboratory of Organic Functional Molecules National Demonstration Center for Experimental Chemistry EducationCollege of Chemistry and Materials ScienceHebei Normal UniversityShijiazhuang050024China

Selective oxidation of aryl alkenes to aldehydes is an important approach to produce industrial raw materials,in which the exploration of an efficient heterogeneous catalyst is significant but *** this work,three hydrogen bond-mediated polyoxometalate(POM)-contained metal–organic networks with the formulas of[Ni(BTD)2(H2O)2]2[SiW12O40]·12H2O(1),[Ni(BTD)2(H2O)]2[SiW12O40]·6H2O(2)and[Zn(BTD)2(H2O)]2[SiW12O40]·6H2O(3)(BTD=4H,4ʹH-[3,3ʹ-bi(1,2,4-triazole)]-5,5ʹ-diamine)were hydrothermally synthesized,in which the metal–organic fragments interact with POM clusters via abundant hydrogen bonding to extend the structure into three-dimensional supramolecular *** be explored as heterogenous catalysts,compounds 1–3 showed high catalytic activity and selectivity for the selective oxidation of styrene to *** them,compound 1 exhibits the highest performance with ca.99%styrene conversion and ca.99%selectivity of benzaldehyde in 5 ***,compound 1 displays rich substrate compatibility,recyclability and good structural stability.A series of experiments demonstrated that the high performance of compound 1 should be attributed to the synergistic effect among polyoxoanion and coordination-unsaturated metal centers in metal–organic fragments,which facilitates the activation of H2O2 and styrene substrates,thus enhancing the catalytic performance.

关键词： Polyoxometalate Metal-organic network Heterogeneous catalyst Oxidation reaction

An unexpected approach to enhance specific surface area and mesopore amount of polyaniline by Zn doping

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Rare Metals 2024年第9期43卷 4585-4594页

作者： Zhi-Da Zhu Yu-Zhe han Xiao-Bi jing School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Poly-p-anisidine could be easily fabricated via the oxidative polymerization reaction of p-anisidine using H_(2)O_(2)as the green *** was unexpectedly found that zinc doping could significantly improve the adsorption ability of the material versus heavy metals such as Pb,Cu,Pd,Ag and *** of nitrogen adsorption–desorption experiments demonstrated that Zn doping could enhance the specific surface area and mesopore amount of the prepared material,which might facilitate its absorption to *** work not only provides a novel material for the treatment of heavy metal-polluted water but also leads to a nice mesoporous catalyst support for environment protection and organic synthesis,*** Zn-doped poly-panisidine can be employed as the catalyst support to prepare Cu@PANI-OMe/Zn or Pd@PANI-OMe/Zn for the oxidative degradation reaction of phenol or Suzuki–Miyaura coupling reactions,*** discloses a new strategy for fabricating the mesoporous polyaniline materials with profound application potential.

关键词： Surfaces Porous materials Rare metal concentration Adsorption Catalysis

Scalable synthesis of nanoporous high entropy alloys for electrocatalytic oxygen evolution

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Rare Metals 2022年第1期41卷 125-131页

作者： Li-Hua Liu Ning Li Mei han jing-Rui han Hong-Yan Liang College of Innovation&Entrepreneurship Shanghai Jianqiao UniversityShanghai 201306China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China

High entropy alloys(HEAs)containing five or more equimolar components have shown promising catalytic performance due to their unique chemical and mechanical ***,it is still challenging to prepare scalable and efficient nanoporous HEAs as ***,we present a facile strategy to synthesize largescale nanoporous HEAs particles by combing vacuum induction melting,gas atomization,and acidic etching *** application of HEAs to energy conversion is evaluated with electrocatalytic oxygen evolution reaction(OER)on AlCrCuFeNi *** HEAs exhibit a low OER overpotential of 270 mV to achieve a current density of 10 mA·cm^(-2),a small Tafel slope of 77.5 mV·dec^(-1),and long-term stability for over 35 h in 1 mol·L^(-1) KOH,which is comparable to the state-of-the-art OER electrocatalyst *** findings in this paper not only provide an industrial approach to produce nanoporous HEAs powder but also inspire the applications of HEAs as catalysts.

关键词： High entropy alloys Gas atomization Acidic etching Nanoporous AlCrFeNiCu structures Oxygen evolution reaction

One-year direct and indirect costs of ischaemic stroke in China

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Stroke & Vascular Neurology 2024年第4期9卷 380-389,I0032-I0043页

作者： Wei Lv Anxin Wang Qianyi Wang Ruimin Wang Qin Xu Shuqing Wu Yi han Yong Jiang Jinxi Lin jing jing Hao Li Yongjun Wang Xia meng Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina School of Basic Medical Science Capital Medical UniversityBeijingChina Department of Cardiology Sun Yat-Sen Memorial Hospital of Sun Yat-Sen UniversityGuangzhouChina Health Economic Research Institute Sun Yat-Sen UniversityGuangzhouChina

Background This is the first real-world study to estimate the direct costs and indirect costs of first-ever ischaemic stroke with 1-year follow-up in China,based on a nationally representative *** Patients were chosen from 20 geographically diverse sites from the nationally representative database China National Stroke Registry-III(CNSR-III).The inclusion criteria were surviving patients who were hospitalised with first-ever ischaemic stroke from February 2017 to February 2018(the index event);aged 18–80 during the index event;no history of other stroke *** primary endpoints were direct medical costs,direct non-medical costs,indirect costs and total cost(ie,the sum of all cost components).Patient characteristics and clinical data were extracted from ***-related in-hospital direct medical costs were collected from hospital electronic medical *** patient survey collected data related to out-of-hospital direct medical costs,direct non-medical costs and indirect *** secondary objective was to explore clinical factors associated with cost outcomes through univariate analysis and multiple *** The study enrolled 520 *** total cost was 57567.48 CNY,with 26612.67 CNY direct medical costs,2787.56 CNY direct non-medical costs and 28167.25 CNY indirect *** analysis showed that longer lengths of stay during the index event,higher National Institutes of Health Stroke Scale(NIHSS)and modified Rankin Scale scores were associated with higher costs in all ***,EuroQol 5 Dimension utility scores were associated with decreased costs except direct non-medical *** regressions showed that higher admission NIHSS scores were independently associated with higher direct medical costs,indirect costs and total *** 3-month utilities were associated with lower total *** This real-world study showed substantial 1-year economic burden following first-ever ischaemic stroke

关键词： indirect costs Dimension

An overview of the configuration and manipulation of soft robotics for on-orbit servicing

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Science China(Information Sciences) 2017年第8期60卷 6-24页

作者： Zhongliang jing Lingfeng QIAO han PAN Yongsheng YANG Wujun CHEN School of Aeronautics and Astronautics Shanghai Jiao Tong University Space Structures Research Centre Shanghai Jiao Tong University

Soft robots refer to robots that are softer and more flexible when compared with conventional rigidbodied robots. Soft robots are adapted to unstructured environments due to their flexibility, deformability and energy-absorbing properties. Thus, they have tremendous application prospects in on-orbit servicing(OOS).This study discusses the configuration and manipulation of soft robotics. Usually, learning from living beings is used to develop the configurations of most soft robots. In this study, typical soft robots are introduced based on what they mimic. The discussion of manipulation is divided into two parts, namely actuation and *** study also involves describing and comparing several types of actuations. Studies on the control of soft robots are also reviewed. In this study, potential application of soft robotics for on-orbit servicing is analyzed.A hybrid configuration and manipulation of space soft robots for future research are proposed based on the current development of soft robotics, and some challenges are discussed.

关键词： soft robot on-orbit servicing biological inspiration configuration manipulation

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Liver injury in COVID-19:Holds ferritinophagy-mediated ferroptosis accountable

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World Journal of Clinical Cases 2022年第36期10卷 13148-13156页

作者： Feng-Ju Jia jing han School of Nursing Qingdao UniversityQingdao 266071Shandong ProvinceChina

Even in patients without a history of liver disease,liver injury caused by coronavirus disease 2019(COVID-19)is gradually becoming more ***,the precise pathophysiological mechanisms behind COVID-19’s liver pathogenicity are still not fully *** hypothesize that inflammation may become worse by cytokine storms caused by the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)*** ferritin levels can initiate ferritinophagy mediated by nuclear receptor coactivator 4(NCOA4),which leads to iron elevation,and *** COVID-19 patients,ferroptosis can be restricted to reduce disease severity and liver damage by targeting NCOA4-mediated *** confirm the role of ferritinophagy-mediated ferroptosis in SARS-CoV-2 infection,further research is required.

关键词： COVID-19 Liver injury Ferritinophagy Ferroptosis Iron SARS-CoV-2

Clinical significance of lymph node metastasis in gastric cancer

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World Journal of Gastroenterology 2014年第14期20卷 3967-3975页

作者： jing-Yu Deng han Liang Gastric Oncology Division Tianjin Medical University Cancer Hospital and City Key Laboratory of Tianjin Cancer CenterNational Clinical Center of Cancer

Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver *** of gastric cancer patients present with lymph node metastasis when they were initially diagnosed or underwent surgical resection,which results in poor *** the depth of tumor invasion and lymph node involvement are considered as the most important prognostic predictors of gastric *** extended lymphadenectomy was not considered a survival benefit procedure and was reported to be associated with high mortality and morbidity in two randomized controlled European trials,it showed significant superiority in terms of lower locoregional recurrence and disease related deaths compared to limited lymphadenectomy in a 15-year followup *** all clinical investigators have reached a consensus that the predictive efficiency of the number of metastatic lymph nodes is far better than the extent of lymph node metastasis for the prognosis of gastric cancer worldwide,but other nodal metastatic classifications of gastric cancer have been proposed as alternatives to the number of metastatic lymph nodes for improving the predictive efficiency for patient *** is still controversial over whether the ratio between metastatic and examined lymph nodes is superior to the number of metastatic lymph nodes in prognostic evaluation of gastric ***,the negative lymph node count has been increasingly recognized to be an important factor significantly associated with prognosis of gastric cancer.

关键词： Stomach Neoplasm Lymph node Metastasis Prognosis

High-precision potassium isotope analysis using the Nu Sapphire collision cell(CC)-MC-ICP-MS

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Science China Earth Sciences 2022年第8期65卷 1510-1521页

作者： Wenjun LI mengmeng CUI Qiqi PAN jing WANG Bingyu GAO Shanke LIU meng YUAN Benxun SU Ye ZHAO Fang-Zhen TENG Guilin han Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Nu Instruments WrexhamLL139XSUK Isotope Laboratory Department of Earth and Space SciencesUniversity of WashingtonSeattleWA98195USA Institute of Earth Sciences China University of Geosciences(Beijing)Beijing100083China

This study presents high-precision analyses of stable potassium(K)isotope ratio using the recently-developed,collision-cell multi-collector inductively coupled plasma mass spectrometry(CC-MC-ICP-MS,Nu Sapphire).The accuracy of our analyses is confirmed by measuring well-characterized geostandards(including rocks and seawater).Our results are consistent with literature values and a precision of 0.04‰(2SD)has been achieved based on multiple measurements of BCR-2 geostandard over a six-month *** also evaluate factors that may lead to artificial isotope fractionations,including the mismatches in K concentration and acid molarity between samples and bracketing standards,as well as potential *** the K adsorption capacity of AGW50-X8(200-400 mesh)is reduced with an increasing amount of matrix elements,less than 150µg K was loaded during the column *** evaluate the potential use of K isotopes as an archive of paleo seawater composition,δ^(41)K values of an international seawater standard(IAPSO),a Mn-nodule(NOD-P-1),and two iron formation standards(FeR-2 and FeR-4)are *** δ^(41)K value of IAPSO is consistent with other seawater samples reported previously,further substantiating a homogeneous K isotopic distribution in modern global *** K isotopes in Mn-nodule(NOD-P-1:−0.121±0.013‰)and iron formation samples(FeR-2:−0.538±0.009‰;FeR-4:−0.401±0.008‰)seem to be an effective tracer of their formation genesis and compositional changes of ancient *** results suggest that high-precision measurements of stable K isotopes can be routinely obtained and open up a large variety of geological applications,such as continental weathering,hydrothermal circulation and alteration of oceanic crust.

关键词： CC-MC-ICP-MS Potassium isotopes Geostandards Sample-standard bracketing method Low energy path