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Chinese Journal of Chemistry 2021年第5期39卷 1113-1120页

作者： Dongdong Wang Tianxin Bai Xue Wang Yuting Xiong Yahui zhang Zhenqiang Shi fusheng zhang Wenqi Lu Guangyan Qing Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning 116023China Institute of Molecular Sciences and Engineering Shandong UniversityQingdaoShandong 266237China College of Chemistry and Chemical Engineering Wuhan Textile University1 Sunshine RoodWuhanHubei 430200China

Excited-state hydrogen bond strongly affects the intramolecular charge conversion process,which is very suitable for the design and development of high-performance fluorescent ***,as one of the most common solvents or additives used in sensing,the role of dimethyl sulfoxide(DMSO)in the system of the excited-state hydrogen bond is seldom *** the goal of this research,we investigated the sensing mechanism of a C0RM3-green fluorescent probe system for carbon monoxide releasing molecule(CORM-3)detection and tracking in vivo,through quantum chemistry calculations based on density-functional-theory(DFT)/time-dependent density-functional-theory(TDDFT)*** on the analysis of the solvent effect of DMSO by the reduced density gradient function and IR spectroscopy,we provided a new strategy to explain the fluorescence ***,we verified the result through the potential energy curve of Phthalimide(PTI,the reduced product of C0RM3-green).The excited-state hydrogen bond between PTI and DMSO promotes radiation transition and leads to obvious difference in the photophysical properties of PTI and PTI-DMSO.

关键词： Density-functional-theory/Time-dependent density-functional-theory Hydrogen bonds Fluorescent probes Electron transfer Dimethyl ulfoxide

Microstructure and mechanical properties of transient liquid phase bonding DD5 single-crystal superalloy to CrCoNi-based medium-entropy alloy

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Journal of Materials Science & Technology 2022年第1期96卷 140-150页

作者： Shiwei Li Jinglong Li Junmiao Shi Yu Peng Xuan Peng Xianjun Sun Feng Jin Jiangtao Xiong fusheng zhang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of Friction Welding Technologies Northwestern Polytechnical UniversityXi’an 710072China

This study focuses on the transient liquid phase(TLP)bonding of DD5 single-crystal superalloy to Cr Co Nibased medium-entropy alloy(MEA)using a BNi-2 filler *** microstructure and mechanical properties of the TLP-bonded DD5/MEA joint were evaluated,and the microstructural evolution mechanism was *** formation of the isothermal solidification zone(ISZ)depended on the diffusion of the melting-point depressants(Si and B elements)from the liquid filler into the DD5 and MEA substrates,as well as the dissolution of the *** diffused along theγchannel of DD5 and reacted to form M_(5)B_(3)boride,herein referred to as the diffusion-affected zone(DAZ I).Similarly,the Cr_(5)B_(3)boride precipitated in the Ni-rich MEA matrix adjacent to the MEA substrate(i.e.,DAZ II).Additionally,a coherent orientation of[0]_(BCY)//[011]_(FCC)and(002)_(BCY)//(200)_(FCC)was detected between M_(5)B_(3)boride with a body-centered tetragonal(BCT)structure and the face-centered cubic(FCC)*** performance of the joint was dominated by the properties of the bonding *** the bonding time increased from 20to 80 min,the athermal solidification zone(including eutectic microstructure)was gradually replaced by the ISZ exhibiting excellent plastic deformation capability,and the shear strength of the joint was *** maximum shear strength(752 MPa)was achieved when the eutectic-free joint was bonded at 1050℃ for 80 *** fracture morphology revealed a mixture mode,indicating the initiation of cracks in the DAZ II,mainly propagating in the ISZ,and passing through the DAZ I.

关键词： Microstructure Mechanical properties Transient liquid phase bonding Single-crystal superalloy Medium-entropy alloy

Spinal cord injury in patients with systemic lupus Erythematosus Clinical manifestations, imaging characteristics and treatment

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Neural Regeneration Research 2007年第3期2卷 179-182页

作者： Yamei Tang fusheng zhang Qingyu Shen Xiangpen Li Yigang Xing Department of Neurology Second Affiliated Hospital of Sun Yat-sen University Guangzhou 510120 Guangdong Province China

BACKGROUND： There are fewer reports on systemic lupus erythematosus （SLE） related myelitis, and definite and uniform therapeutic program is not available. OBJECTIVE： To observe the clinical manifestations, imaging characteristics, results of laboratory examination and treatment of SLE. DESIGN： A retrospective case analysis. SETTING： Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University. PARTICIPANTS： Totally 1 052 SLE inpatients were selected from the Second Affiliated Hospital of Sun Yat-sen University from January 1995 to May 2005, and they all accorded with the diagnostic standards for SLE set by American Rheumatism Association in 1982. 124 of them were diagnosed to have damage of central nervous system. Inclusive criteria： Patients with one of the focal physical signs, including mental and behavior disorders, headache, seizure and involvement of nervous system. Exclusive criteria： Patients with hypertensive encephalopathy, damage of nervous system due to uremia and infection of central nervous system. Spinal cord lesion occurred in 15 female cases of 23 - 51 years old. Informed consents were obtained from all the participants. METHODS： The physical signs, laboratory examinations, therapeutic program and prognosis were recorded in the 15 patients with symptoms of spinal cord lesions. All the patients underwent MRI scan of brain or lesioned segment of spinal cord, and 8 cases of them underwent lumbar puncture to determine intracranial pressure, routine and biochemical examinations were cerebrospinal fluid were performed. The disease activity of SLE in systems beyond central nervous system was evaluated with modified lupus activity criteria count （LACC）. MAIN OUTCOME MEASURES：① Incidence of SLE related myelitis, attack age distribution and its association with the activity of SLE; ② Comparisons of the clinical characteristics, cranial and spinal cord MRI manifestations, different therapeutic program and prognosis. RESULTS： All the 15 SLE

关键词： systemic lupus erythematosus (SLE) myelitis magnetic resonance imaging (MRI)

Influence of Micro/Nano-Ti Particles on the Corrosion Behavior of AZ31-Ti Composites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 484-498页

作者： Jinchao Jiao Jin zhang Yong Lian Shengli Han Kaihong Zheng fusheng Pan Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 10083China Beijing Key Laboratory for Corrosion Erosion and Surface Technology Beijing 100083China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 404100China

Adding Ti particles to magnesium alloy simultaneously enhances its strength and ***,how these particles influence on Mg alloy’s corrosion performance is seldom *** corrosion behavior of AZ31-Ti composites containing titanium nanoparticles(1.5 and 5 wt%)and micron particles(10 wt%)prepared by powder metallurgical in 3.5 wt%NaCl solution was *** results indicate that Ti particles serve as the primary location for the cathodic hydrogen reduction reaction,resulting in intense galvanic corrosion between the Ti and Mg *** nanoparticles distributed at the interface of the original AZ31 powder were in a discontinuous mesh structure,thus failing to act as a barrier against *** corrosion products with the existence of numerous cracks gradually peel off during the corrosion process and cannot protect the *** average corrosion rate P_(w) of AZ31,AZ31-1.5%Ti,AZ31-5%Ti,and AZ31-10%Ti after 7 days of immersion is 27.55,105.65,283.67,and 99.35 mm/y,***,AZ31-Ti composites can be considered as potential candidates for degradable fracturing ***,it is recommended to improve their corrosion resistance through surface treatment.

关键词： AZ31-Ti composite Nano-Ti Micro-Ti Corrosion behavior Scanning Kelvin probe force microscopy(SKPFM)

Recent progress in the research on magnesium and magnesium alloy foils:A short review

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 842-854页

作者： Qiuyan Shen Yongxing Ba Peng zhang Jiangfeng Song Bin Jiang fusheng Pan National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Key Laboratory of Advanced Casting Technologies Chongqing UniversityChongqing 400044China

Magnesium and magnesium alloy foils have great potential for application in battery anodes,electromagnetic shielding,optics and acoustics,and biology because of their excellent specific damping,internal dissipation coefficients,magnetic and electrical conductivities,as well as high theoretical specific ***,magnesium alloys exhibit poor deformation ability due to their hexagonal close-packed crystal *** magnesium and magnesium alloy foils with thicknesses of less than 0.1 mm is difficult because of surface oxidation and grain growth at high temperatures or severe anisotropy after cold rolling that leads to *** methods have been applied to prepare magnesium alloy *** include warm rolling,cold rolling,accumulative roll bonding,electric plastic rolling,and on-line heating *** of magnesium and magnesium alloy foils during preparation,such as edge cracks and breakage,are important factors for ***,the current status of the research on magnesium and magnesium alloy foils is summarized from the aspects of foil preparation,defect control,performance characterization,and application *** advantages and disadvantages of different preparation methods and defect(edge cracks and breakage)mechanisms in the preparation of foils are identified.

关键词： magnesium alloy foil rolling defect performance application

A hybrid nickel/iron-pyromellitic acid electrocatalyst for oxygen evolution reaction

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Nano Research 2024年第4期17卷 2481-2491页

作者： Guoqi Li Lin Li Wenlong Li fusheng Li Chunze Yuan Nian zhang Hui zhang Tsu-Chien Weng School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Center for Transformative Science ShanghaiTech UniversityShanghai 201210China State Key Lab of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT)Dalian 116024China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China

The migration of protons during the oxygen evolution reaction(OER)is a key factor that affects the performance of OER *** enhance proton transportation,we designed a catalyst based on nickel/iron-pyromellitic acid(NiFe-PMA)prepared by the electrochemical deposition *** catalyst exhibited a low overpotential of 188 mV at a current density of 10 mA·cm^(-2),a Tafel slope of 28.2 mV·dec^(-1),and long-term stability for 30 days with a current of 50 mA·cm^(-2).We characterized the NiFe-PMA catalyst using various techniques,including Fourier transform infrared(FTIR)spectroscopy,Raman spectroscopy,X-ray photoelectron spectroscopy(XPS),X-ray absorption spectroscopy(XAS),transmission electron microscopy(TEM),scanning electron microscopy(SEM),and inductively coupled plasma-optical emission spectrometry(ICP-OES).Our results showed that NiFe-PMA contains nickel,iron atoms,and both coordinated and uncoordinated carboxylate ***,XPS data confirmed that carboxylate ligands could adjust the outer electronic structure of metal ions,resulting in the high valence state of Ni in *** result of XAS indicated that the nickel atoms present in the catalyst might be easier to maintain a higher chemical *** investigations using kinetic isotope effects(KIEs)and proton inventory revealed that the uncoordinated carboxylic protons played a crucial role in receiving protons during the OER,which promoted the proton transfer of the rate-determining step of the *** novel electrocatalysts provide a new strategy for designing more active and cost-effective catalysts for the OER.

关键词： nickel/iron-pyromellitic acid oxygen evolution reaction kinetic isotope effects

Remarkable difference of phospholipid molecular chirality in regulating PrP aggregation and cell responses

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中国化学快报：英文版 2023年第2期34卷 236-243页

作者： Cunli Wang Xue Wang Dongdong Wang Shengxu Qian fusheng zhang Mingyang Li Minmin Li Wenqi Lu Bo Liu Guangyan Qing School of Biomedical Engineering Dalian University of TechnologyDalian 116024China CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China

Prion diseases are fatal neurodegenerative diseases that can cause severe *** misfolding and accumulation of the prion peptide (PrP)_(106–126) is crucial,and this process is closely relevant to biological ***,how PrP_(106–126)aggregation is affected by the molecular chirality of phospholipid membrane is ***,in this study,a pair of L-and D-aspartic acid (Asp)-modified 1,2-dipalmitoyl-sn–glycero-3-phosphoethanolamine (DPPE) were synthesized to construct chiral *** discover that L-Asp-DPPE liposomes strongly inhibit the oligomerization and amyloidogenesis of PrP_(106–126),whether acting on monomers or oligomers,which rescues cytotoxicity induced by PrP_(106–126).By comparison,D-Asp-DPPE liposomes inhibit peptide oligomerization only at a high concentration and cannot prevent amyloidogenesis when acting on oligomers,which lead to pronounced *** experiment,dynamic change of intracellular Ca^(2+)(_(i)Ca^(2+)) and Ca^(2+)release from endoplasmic reticulum(ER),reactive oxygen species (ROS) production,adsorption dynamics and affinity tests,and fluorescent imaging clearly disclose that molecular chirality of the liposomes dominates conformational transition of PrP_(106–126)from random coil to β-sheet,binding and adsorption of the monomers and oligomers,and subsequent fibrillation process,resulting in distinct inhibition effect in Ca^(2+)overload and release,ROS production and cell *** work is the first to report that interfacial molecular chirality is a potentially crucial influence on the fibrillation process of PrP_(106–126) and its cell responses,whereas the convergence of chiral amino acids and liposomes can be considered potential inhibitors in prion diseases.

关键词： Prion disease Liposome Chirality Interface Cytosolic Ca^(2+)

Uncovering of the formation of rare earth texture and pseudo fiber bimodal microstructure in the high ductility Mg-2Gd-0.4Zr alloy during extrusion

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Journal of Materials Science & Technology 2024年第5期172卷 166-184页

作者： Tianxu Zheng Yaobo Hu Chao zhang Tianshuo Zhao Bin Jiang fusheng Pan Aitao Tang College of Materials Science and Engineering Chongqing UniversityChongqing400044China National Engineering Research Center for Magnesium Alloys Chongqing400044China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China

The aim of this research was to elucidate the underlying mechanism involved in the formation of rare earth(RE)texture and pseudo fiber bimodal microstructure in the high ductility Mg-2Gd-0.4Zr *** microstructure and texture evolution during the extrusion process were analyzed using various tech-niques,including optical microscopy(OM),scanning electron microscopy(SEM),electron backscatter diffraction(EBSD),and electron probe microanalysis(EPMA).The findings revealed that the RE texture in the extruded Mg-2Gd-0.4Zr alloy emerged during the dynamic recrystallization(DRX)process and was further strengthened during the subsequent static recrystallization and grain growth *** nu-cleation and growth of grains in the streamline region of Zr particles were delayed in comparison to other regions due to the pinning effect of Zr particles,ultimately resulting in the formation of pseudofiber bi-modal microstructure in the extruded Mg-2Gd-0.4Zr alloy.

关键词： Magnesium alloys Ductility Rare earth texture Bimodal microstructure

Clinical characteristics and changes in living quality of patients with radiation encephalopathy induced by radiation therapy for treating nasopharyngeal carcinoma

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Neural Regeneration Research 2007年第2期2卷 99-102页

作者： Yamei Tang Yi Li fusheng zhang Yunlin Liu Haihong Zhou Jianhong Ye Yigang Xing Department of Neurology the Second Affiliated Hospital Sun Yat-sen University Guangzhou 510120 Guangdong Province China

BACKGROUND： Radiation encephalopathy （RE） caused by radiation therapy of nasopharyngeal carcinoma severely influences patients＇ quality of life （QOL）. The factors, which influence such patients＇ QOL, have not been confirmed. OBJECTIVE： To observe the clinical and imageological characteristics of patients with radiation therapy of nasopharyngeal carcinoma-induced RE and the changes in QOL, and analyze QOL influencing factors. DESIGN： Retrospective case analysis. SETTING： Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University. PARTICIPANTS： Eighty-nine inpatients or outpatients with RE induced by radiation therapy of nasopharyngeal carcinoma admitted to Sun Yat-sen University Cancer Center and Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University from March 1994 to August 2004 were involved in this experiment. They all met the diagnosis criteria of RE from MERRITT＇S neurology （10th edition）. Thirty-three involved patients were randomly chosen as RE group. Another 34 concurrent inpatients or outpatients with nasopharyngeal carcinoma who received radiation therapy but without RE were chosen as control group. Informed consents of detected items were obtained from all the involved subjects. METHODS：（1） Patients were evaluated when they were followed up. The World Health Organization Quality of Life Questionnaire abbreviated version （WHOQOL-BREF） was used for on-the-spot evaluation. High points of WHOQOL-BREF indicated better QOL. The Late Effects on Normal Tissues - Subjective, Objective, Management and Analytic （LENT-SOMA） scale for evaluating radiation injury was used to evaluate headache and neurologic disorder of patients with RE induced by radiation therapy of nasopharyngeal carcinoma. The evaluation was graded into 5 degrees. High degrees indicted severer clinical symptoms. （2） Disease latency （i.e. time interval from symptoms and body signs appearing or radiation therapy ending to onset）, initial symptoms, com

关键词： nasopharyngeal cancer radiation encephalopathy quality of life

Unique three-component co-assembly among AIEgen,L-GSH,and Ag^(+)for the formation of helical nanowires

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聚集体(英文)

聚集体(英文) 2023年第2期4卷 253-266页

作者： Xiaohuan Huang Junrong Li Hong Tang Miao Guo Xue Wang Xiaorong Wang Xu Wang Mingliang Tang fusheng zhang Yahui zhang Xiaopei Li Guangyan Qing Hubei Key Laboratory of Pollutant Analysis and Reuse Technology College of Chemistry and Chemical EngineeringHubei Normal UniversityHuangshiP.R.China CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianP.R.China School of Petrochemical Engineering Liaoning Petrochemical UniversityFushunP.R.China College of Life Sciences Wuhan UniversityWuhanP.R.China

Nature has selected,produced,and evolved numerous molecular architectural motifs over billions of years for particular *** this process,molecular self-assembly plays a critically important *** by these delicate assemblies,scientists devote themselves to developing various sophisticated complexes assembled by diverse and numerous structural *** far,most of the examples focus on single-molecule self-assembly or co-assembly between two molecules,seldom works report the co-assembly among three building blocks due to the substantially increased complexity and decreased *** we report a novel three-component co-assembly among L-glutathione(L-GSH),AgNO_(3),and an aggregation-induced emission luminogen(AIEgen),namely triphenylamine-pyridinium(abbreviated to TPA-Py).TPA-Py,L-GSH,and Ag^(+)co-assemble into numerous long and ordered nanowires with left-handed helices,which show remarkable AIE properties that can be observed by naked *** effect is only detected in this system,the replacement of TPA-Py with other AIEgens,L-GSH with other cysteine derivatives or anions,Ag^(+)with other metal ions,could not lead to the unique AIE effect,which endows this system with high specificity and *** work provides new insight into the design of biomolecule recognition systems and discloses that ternary co-assembly could become a facile route to build sophisticated nanobiomaterials.

关键词： aggregation-induced emission fluorescence multicomponent assembly nanowires supramolecular helicity