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Theoretical study on hydrogen evolution reaction in transition metal borides

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Rare Metals 2023年第6期42卷 1808-1812页

作者： Xue Li Zi-Qi Li han-yu liu Si-yu Lu Henan Institute of Advanced Technology Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China International Center for Computational Method&Software State Key Laboratory of Superhard MaterialsLaboratory of Physics and Technology for Advanced Batteries(Ministry of Education)College of PhysicsJilin UniversityChangchun130012China

Given increasing energy demands and environmental pollution,it is highly desirable to design new hydrogen evolution reaction(HER)*** this study,we have performed high throughput screening of transition-metal borides(M2B)and Janus counterparts for appealing *** simulations showcase that the Pd_(2)B,PdPtB,PdIrB and PdAuB possess favorable HER performance with the different chemical nature and unique asymmetry structure.

关键词： structure hydrogen boride

High-strength Ti-Al-V-Zr cast alloys designed using α and β cluster formulas

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China Foundry 2023年第1期20卷 23-28页

作者： Zhi-hao Zhu yu-han liu Zhi-peng Chen Tian-yu liu Shuang Zhang Dan-dan Dong Chuang Dong Key Laboratory for Materials Modification by Laser Ionand Electron Beams and School of Materials Science and EngineeringDalian University of TechnologyDalian 116024LiaoningChina State Key Laboratory of Light Alloy Casting Technology for High-end Equipment Shenyang Research Institute of Foundry Co.Ltd.Shenyang 110022China School of Materials Science and Engineering Dalian Jiaotong UniversityDalian 116028LiaoningChina College of Physical Science and Technology Dalian UniversityDalian 116622LiaoningChina

Ti-Al-V-Zr quaternary titanium alloys were designed followingα-{[Al-Ti12](AlTi2)}17-n+β-{[Al-Ti12Zr2](V3)}n,where n=1-7(the number ofβunits),on the basis of the dual-cluster formula of popular Ti-6Al-4V *** an alloying strategy aims at strengthening the alloy via Zr and V co-alloying in theβ-Ti unit,based on the originalβformula[Al-Ti14](V2Ti)of Ti-6Al-4V *** microstructures of the as-cast alloys by copper-mold suction-casting change from pureα(n=1)toα+α’martensite(n=7).When n is 6,Ti-5.6Al-6.8V-8.1Zr alloy reaches the highest ultimate tensile strength of 1,293 MPa and yield strength of 1,097 MPa,at the expense of a low elongation of 2%,mainly due to the presence of a large amount of acicularα’*** specific strength far exceeds that of Ti-6Al-4V alloy by 35%.

关键词： titanium alloy cluster-plus-glue-atom model composition design microstructure mechanical properties

Effect of Residual Stress on Corrosion Sensitivity of Carbon Steel Studied by SECM

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Chemical Research in Chinese Universities 2014年第6期30卷 1022-1027页

作者： WANG yujie han Xiaoping liu yu ZhanG Weiwei NIU Lin Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China

The effect of compressive residual stress on the reactivity of carbon steel in a neutral chloride solution was investigated by means of potentiodynamic polarization and local electrochemical measurement with scanning electrochemical microscope（SECM）. Meanwhile, X-ray diffraction, as a nondestructive technique, was employed to determine the levels of residual stress in near-surface layers of carbon steel specimen. The results show that the resi- dual stress existed in the specimen fell into the category of compressive residual stress which was inversely propor- tional to the corrosion sensitivity of carbon steel specimen. By using I/I3 couple as a redox mediator in the current feedback mode of SECM measurements, the Faradaic current on Pt tip, which was relevant to the rate of the I3- ion reduction, fell with the increase of compressive residual stress. The correlation between compressive residual stress and heterogeneous electron transfer rate has been proposed based on the inference of the localized electrochemical reactions occurred on the specimen surface,

关键词： rCarbon steel Corrosion sensitivity Residual stress Scanning electrochemical microscope(SECM)

Ψ-bounded Solutions for a System of Difference Equations on Z

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Communications in Mathematical Research 2011年第4期27卷 331-342页

作者： han yu-LIANG liu BAI-FENG SUN XI-DONG College of Mathematics and Information Scieces Shandong Institute of Business and Technology Yantai Bhandong 264005

In this work we discuss the existence of ψ-bounded solutions for linear difference equations. We present a necessary and sufficient condition for the existence of ψ--bounded solutions for the linear nonhomogeneous d... 详细信息

关键词： difference equation ψ-bounded solution existence

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling liu Biao Meng Tao Chen yu han Jun Wang Shibo Xi yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

Bacterial infection triggers and complicates acute-on-chronic liver failure in patients with hepatitis B virus-decompensated cirrhosis: A retrospective cohort study

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World Journal of Gastroenterology 2020年第6期26卷 645-656页

作者： Zhu-Jun Cao yu-han liu Chuan-Wu Zhu Shan Yin Wei-Jing Wang Wei-Liang Tang Gang-De Zhao yu-Min Xu Lu Chen Tian-Hui Zhou Ming-Hao Cai Hui Wang Wei Cai Shi-San Bao Hai Li Qing Xie Department of Infectious Diseases Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Department of Infectious Diseases The Affiliated Infectious Diseases Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Gastroenterology Renji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Infectious Diseases Ruijin Hospital NorthShanghai Jiao Tong University School of MedicineShanghai 201801China Discipline of Pathology School of Medical Sciences and Bosch InstituteUniversity of SydneySydneyNSW 2006Australia

BACKGROUND Reports on bacterial infection(BI)in decompensated cirrhosis(DC)is mainly from alcoholic *** role of BI as a trigger or complication of acute-onchronic liver failure(ACLF)in patients with hepatitis B virus decompensated cirrhosis(HBV-DC)remains to be *** To investigate the impact of BI on the outcomes of the patients with HBV-DC admitted into the hospital with or without *** This retrospective study included patients with HBV-DC admitted to two tertiary centers in ***-hospital overall survival,90-d transplant-free survival,5-year post-discharge survival,and cumulative incidence of ACLF were *** factors for death were analyzed considering liver transplantation as a competing *** A total of 1281 hospitalized HBV-DC patients were included;284 had ACLF at *** overall prevalence of BI was 28.1%.The patients with BI had a significantly lower in-hospital survival and transplant-free 90-d survival than those without,in both the patients admitted with and without *** presence of BI significantly increased the risk of developing ACLF[subdistribution hazard ratio(sHR)=2.52,95%CI:1.75-3.61,P<0.001]in the patients without *** the patients discharged alive,those who had an episode of BI had a significantly lower 5-year transplant-free *** was an independent risk factor for death in the patients admitted without ACLF(sHR=3.28,95%CI:1.93-5.57),while in ACLF admissions,the presence of pneumonia,but not other type of BI,independently increased the risk of death(sHR=1.87,95%CI:1.24-2.82).CONCLUSION BI triggers ACLF in patients with HBV-DC and significantly impairs short-term ***-DC patients should be monitored carefully for the development of BI,especially pneumonia,to avoid an adverse outcome.

关键词： Hepatitis B virus Cirrhosis Decompensation Bacterial infection Acute-onchronic liver failure Survival

Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai Wang Yanbo Liang Chao Wang yunhong Zhang Hong liu yu Zhang Lin han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

网络舆论对消费者购买意愿的影响研究——基于舆论领袖与时间距离的调节作用

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云南财经大学学报 2017年第1期33卷 150-160页

作者：刘宇涵刘永松北京联合大学商务学院北京100025 云南财经大学传媒学院昆明650221

网络舆论在互联网背景下受到网民的广泛关注,网络舆论引导能够影响甚至改变消费者的态度和行为。网络舆论如何作用于消费者购买意愿的研究,是当今学术和实践界关注的前沿问题。在对相关文献进行梳理的基础上,实证研究网络舆论对消费者... 详细信息

网络舆论在互联网背景下受到网民的广泛关注,网络舆论引导能够影响甚至改变消费者的态度和行为。网络舆论如何作用于消费者购买意愿的研究,是当今学术和实践界关注的前沿问题。在对相关文献进行梳理的基础上,实证研究网络舆论对消费者购买意愿的影响,特别检验舆论领袖和时间距离的调节作用,研究结论用以指导企业营销策略的改善。

关键词：网络舆论舆论领袖时间距离购买意愿

Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi yu Faith Teo En Ning Chang liu yu-Chi liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina