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Journal of Iron and Steel Research International 2023年第11期30卷 2301-2317页

作者： cheng-yu wang Teng An yu Gu Zhong-nan Bi Jin-hui Du Jing-long Qu Beijing Key Laboratory of Advanced High Temperature Materials Central Iron&Steel Research InstituteBeijing100081China Beijing GAONA Materials&Technology Co. Ltd.Beijing100081China

The inhomogeneous microstructure of the Ni-based superalloys used for turbine disks was an intolerable defect for the mechanical *** effects of the distribution ofγ'precipitate,forging temperature,and strain level on the microstructure evolution of GH4730 alloy were investigated by EBSD during hot *** results showed that the heterogeneous factor peaked at the transition temperature from the single-phase to the double-phase *** coupling effect of heat and stress led to the heterogeneous precipitation and distribution ofγ'phase during the transition region,which was the main reason for the formation of inhomogeneous *** coherentγ'phases of approximately 0.3μm were diffusely distributed inside the large grains,increasing the grain strength,making recrystallization refinement difficult,and thus forming large unrecrystallized *** incoherentγ'phases with a size of approximately 1.1μm located at the grain boundaries and pinned the grain boundaries,and thus the accumulated strain at the grain boundaries caused the occurrence of discontinuous dynamic recrystallization and promoted continuous refinement of the *** microstructure evolution of new Ni-based superalloys during hot forging was focused,and the formation mechanism of inhomogeneous microstructure and control measures was explained.A theoretical basis for improving the microstructure homogeneity of the new cast and wrought superalloys was provided.

关键词： GH4730 alloy Hot deformation γ′phase Heterogeneous factor Microstructure homogeneity

Simultaneously enhanced electrochemical performance and air stability of Ni-rich cathode with a modified washing process

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Rare Metals 2024年第1期43卷 87-97页

作者： Ben-Rui Hu Ying-Yi yuan yu-cheng wang Xun-Hui Xiong School of Environment and Energy Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640China

Water washing has been regarded as one of the most effective strategies to remove surface residual lithium of nickel-rich layered oxides for lithium-ion batteries(LIBs).However,the loss of lattice lithium during the water washing process deteriorates the electrochemical performances and air ***,washing the LiNi_(0.90)Co_(0.05)Al_(0.02)O_(2)(NCA) with ammonium dihydrogen phosphate(NH_(4)H_(2)PO_(4)) solution has been proposed to simultaneously enhance electrochemical performances and air stability,in which in-situ generated Li_(3)PO_(4) coating layer on surface of NCA can suppress the loss of lattice ***,as a fast ionic conductor,Li_(3)PO_(4) coating layer on NCA can prevent the direct contact with electrolyte/*** a result,the NH_(4)H_(2)PO_(4) solution washed NCA cathode can deliver a high capacity of131.9 mAh·g^(-1) at 10.0C rate as well as impressive cycle stability with a capacity retention of 83.1% after 100 cycles at 1.0C,much higher than those of water washed NCA(WS-NCA) *** exposed in air for 7 days,the NH_(4)H_(2)PO_(4) solution washed NCA electrode can more effectively maintain the structural integrity as well as the electrochemical performances than water-washed *** work provides a simple and effective approach to enhance the cycle stability and air stability of Nickel-rich cathode materials.

关键词： Layered Ni-rich cathode Residual lithium Li_(3)PO_(4)coating Rate performance Air stability

Systematic analysis and modeling of the FLASH sparing effect as a function of dose and dose rate

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Nuclear Science and Techniques 2024年第10期35卷 51-58页

作者： Qi-Bin Fu Yan Zhang yu-cheng wang Tu-Chen Huang Hong-yu Zhu Xiao-Wu Deng Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Department of Radiation Oncology State Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer CenterGuangzhou 510060China

Ultrahigh-dose-rate radiotherapy(FLASH-RT)is a revolutionary radiotherapy technology that can spare normal tissues without compromising tumor *** qualitative experimental results have been reported,quantitative and systematic analysis of data is ***,the FLASH effect response model to the dose or dose rate is still *** study investigated the relationships between the FLASH effect and experimental parameters,such as dose,dose rate,and other factors by analyzing published in vivo experimental data from animal *** data were modeled based on logistic regression analysis using the sigmoid *** model was evaluated using prediction accuracy,receiver operating characteristic(ROC)curve,and area under the ROC *** showed that the FLASH effect was closely related to the dose,mean dose rate,tissue type,and corresponding biological *** dose rate corresponding to a 50% probability of triggering cognitive protection in the brain was 45 Gy s^(-1).The dose rate corresponding to a 50% probability of triggering intestinal crypt survival and regeneration was 140 Gy s^(-1).For the skin toxicity effect,the dose corresponding to a 50% probability of triggering the FLASH effect was 24 *** study helps to characterize the conditions underlying the FLASH effect and provides important information for optimizing experiments.

关键词： FLASH radiotherapy Sparing effect Systematic analysis Dose rate Dose Biological endpoints

Synthesis and in vitro antibacterial activities of 7-(3-aminopyrrolo[3,4-c]pyrazol-5(2H,4H,6H)-yl)quinolone derivatives

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Chinese Chemical Letters 2010年第10期21卷 1141-1144页

作者： Xin Guo Yi Liang Li yu Fei Liu Hui yuan Guo yu cheng wang Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences and Peking Union Medical College Be ijing 100050 China College of Pharmaceutical Sciences Southwest University Chongqing 400715 China Tianjin Institute of Pharmaceutical Research Tianjin Key Laboratory of Molecular Design & Drug Discovery Tianjin 300193 China Xuzhou Medical College Xuzhou 221004 China

A series of novel 7-（3-aminopyrrolo[3,4-c]pyrazol-5（2H,4H,6H）-yl）quinolone derivatives were designed, synthesized and evaluated for in vitro antibacterial activities. Compounds 6g, 7g and 7h with the potencies similar to those of gemifloxacin, moxifloxaein, gatifloxacin and levofloxacin against Gram-positive organisms, worth further investigation.

关键词： Fluoroquinolone Synthesis Antibacterial activities

Surgical resection of a large hypopharyngeal hemangioma in an adult using neodymium-doped yttrium aluminum garnet laser: A case report

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World Journal of Clinical Cases 2020年第5期8卷 932-938页

作者： Mang Jin cheng-yu wang yun-Xiang Da Wei Zhu Hui Jiang Department of Otolaryngology Jinshan Hospital Fudan University

BACKGROUND Generally,hemangiomas do not require surgical intervention;however,cases of large hemangiomas,potentially involving the throat and trachea,necessitate surgical ***,we present a case of hypopharyngeal hemangioma in an adult that was successfully treated with neodymium-doped yttrium aluminum garnet(Nd-YAG)*** SUMMARY Laryngoscopic examination of a 61-year-old man demonstrated the presence of a large,submucosal vascular lesion that extended into the epiglottis,left arytenoid cartilage,lateral to the aryepiglottic fold,and pyriform *** lesion was resected and photocoagulated with limited hemorrhage using Nd:YAG *** hypopharyngeal hemangioma was completely *** patient showed no recurrence of hypopharyngeal hemangioma during the 1.5-year follow-up *** Laser therapy is one of the effective tools for treating hemangiomas with rapid,uncontrolled growth or in functional areas,with few side effects and *** present case of a male patient with a large hypopharyngeal hemangioma,treated with YAG laser,demonstrates the efficacy of laser photocoagulation in treating cases of hemangiomas,without the risk of bleeding or airway *** favorable postoperative outcomes demonstrated by our patient with Nd:YAG laser therapy indicate its consideration in the therapy of similar cases.

关键词： Yttrium aluminum garnet laser Large Adult Surgical resection Hypopharyngeal Hemangioma Case report

Effect of depositing PCBM on perovskite-based metal–oxide–semiconductor field effect transistors

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Chinese Physics B 2018年第4期27卷 391-395页

作者： Su-Zhen Luan yu-cheng wang Yin-Tao Liu Ren-Xu Jia School of Electronic Engineering Xidian University Xi＇an 710071 China School of Microelectronics Xidian University Xi＇ an 710071 China

In this manuscript,the perovskite-based metal–oxide–semiconductor field effect transistors（MOSFETs） with phenylC61-butyric acid methylester（PCBM） layers are *** MOSFETs are fabricated on perovskites,and characterized by photoluminescence spectra（PL）,x-ray diffraction（XRD）,and x-ray photoelectron spectroscopy（XPS）.With PCBM layers,the current–voltage hysteresis phenomenon is effetely inhibited,and both the transfer and output current values *** band energy diagrams are proposed,which indicate that the electrons are transferred into the PCBM layer,resulting in the increase of *** electron mobility and hole mobility are extracted from the transfer curves,which are about one order of magnitude as large as those of PCBM deposited,which is the reason why the electrons are transferred into the PCBM layer and the holes are still in the perovskites,and the effects of ionized impurity scattering on carrier transport become smaller.

关键词： metal-oxide-semiconductor field effect transistors photoelectric characteristics perovskite

Selective 1,4-arylsulfonation of 1,3-enynes via photoredox/nickel dual catalysis

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Organic Chemistry Frontiers 2022年第3期9卷 788-794页

作者： Chao Li Duo-Duo Hu Ruo-Xing Jin Bing-Bing Wu cheng-yu wang Zhuofeng Ke Xi-Sheng wang School of Materials Science&Engineering School of ChemistryPCFM LabSun Yat-Sen UniversityGuangzhou 510275P.R.China Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry Center for Excellence in Molecular Synthesis of CASUniversity of Science and Technology of China96 Jinzhai RoadHefeiAnhui 230026China

A photoredox/nickel-catalyzed selective 1,4-arylsulfonation of 1,3-enynes to access structurally diverse sulfone-containing allenes has been *** radical cascade transformation featured easy manipulation,mild conditions,low catalyst loading,broad substrate scope,and large-scale *** preliminary mechanistic studies indicated a possible radical-relay process enabled by the radical capture of nickel(0)species.

关键词： synthesis nickel redox

Ideal Bi‑Based Hybrid Anode Material for Ultrafast Charging of Sodium‑Ion Batteries at Extremely Low Temperatures

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Nano-Micro Letters 2025年第3期17卷 152-167页

作者： Jie Bai Jian Hui Jia yu wang Chun cheng Yang Qing Jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and EngineeringJilin UniversityChangchun 130022People’s Republic of China

Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at−20°C or ***,the key capability of ultrafast charging at ultralow temperature for SIBs is rarely ***,a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue,which is synthesized via a high temperature shock *** a hybrid shows an unprecedented rate performance(237.9 mAh g^(−1) at 2 A g^(−1))at−60℃,outperforming all reported SIB anode *** with a Na_(3)V_(2)(PO_(4))_(3)cathode,the energy density of the full cell can reach to 181.9 Wh kg^(−1) at−40°*** on this work,a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries

Hyperbranched Poly(α-aminonitrile)s Constructed via Catalyst-Free Multicomponent Polymerization of Trialdehydes,Diamines and Trimethylsilyl Cyanide

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Chinese Journal of Polymer Science 2025年第2期43卷 341-349页

作者： Tian-yu cheng Jian-Qing Ding yu-Xin Tong Jun-Guo Fang Jia wang School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu241000China Songshan Lake Materials Laboratory Dongguan523808China

Functional hyperbranched polymers,as an important class of materials,are widely applied in diverse ***,the development of simple and efficient reactions to prepare hyperbranched polymers is of great *** this work,trialdehydes,diamines,and trimethylsilyl cyanide could easily undergo multicomponent polymerization under mild conditions,producing hyperbranched poly(α-aminonitrile)s with high molecular weights(M_(w) up to 4.87×10^(4))in good yields(up to 85%).The hyperbranched poly(α-aminonitrile)s have good solubility in commonly used organic solvents,high thermal stability as well as morphological ***,due to the numerous aldehyde groups in their branched chains,these hb-poly(α-aminonitrile)s can undergo one-pot,two-step,four-component post-polymerization with high *** work not only confirms the efficiency of our established catalyst-free multicomponent polymerization of aldehydes,amines and trimethylsilyl cyanide,but also provides a versatile and powerful platform for the preparation of functional hyperbranched polymeric materials.

关键词： Catalyst-free Multicomponent polymerization Hyperbranched polymer Post-polymerization

The Synthesis and Activity in vitro of a Series of 5-Amino-8-methoxyquinolones

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Chinese Chemical Letters 2004年第12期15卷 1397-1399页

作者： Jiu yu LIU Yan LU yu cheng wang Hui yuan GUO Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050 Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050 China

A series of 1-cyclopropyl-5-amino-6-fluoro-8-methoxyquinoline-3-carboxylic acidshave been prepared and evaluated for antibacterial activity in vitro.

关键词： Quinolone synthesis antibacterial activity.