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Uniform MnO2 nanostructures supported on hierar- chically porous carbon as efficient electrocatalysts for rechargeable Li-O2 batteries

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Nano Research 2015年第1期8卷 156-164页

作者： Xiaopeng Han Fangyi cheng chengcheng chen Yuxiang hu jun chen Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative InnovationCenter of Chemical Science and Engineering Nankai University Tianjin 300071 China

Through in situ redox deposition and growth of MnO2 nanostructures on hierarchically porous carbon （HPC）, a MnOR/HPC hybrid has been synthesized and employed as cathode catalyst for non-aqueous Li-O2 batteries. Owing to the mild synthetic conditions, MnO2 was uniformly distributed on the surface of the carbon support, without destroying the hierarchical porous nanostructure. As a result, the as-prepared MnO2/HPC nanocomposite exhibits excellent Li-O2 battery performance, including low charge overpotential, good rate capacity and long cycle stability up to 300 cycles with controlling capacity of 1,000 mAh·g^-1. A combination of the multi-scale porous network of the shell-connected carbon support and the highly dispersed MnO2 nanostructure benefits the transportation of ions, oxygen and electrons and contributes to the excellent electrode performance.

关键词： lithium-oxygen batteries manganese oxide nanocomposite catalyst oxygen electrochemistry

Precise Design and Stress Analysis of Straight Conical Gear

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Computer Aided Drafting,Design and Manufacturing 2006年第1期16卷 31-37页

作者： chen Xia XIA jun-chen hu Guo-an State Key Laboratory of Plastic Forming Simulation and Die ＆ Mold Technology Huazhong University of Science ＆ Technology Wuhan 430074 China

Variable section sweeping with sphere involutes is used to generate the precise model of tooth profile. The contact and bending stress of a straight conical gear set with static bearing contact during a meshing cycle is studied using finite element method. Numerical results and comments are presented, revealing that the edge contact causes stress concentration and the gear tooth profile needs further modification.

关键词： straight conical gear precise design bending stress Hertzian contact stress finite element stress analysis

Analysis of Die Forging Process and FEA of Piston

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Computer Aided Drafting,Design and Manufacturing 2005年第2期15卷 19-23页

作者： chenG jun-wei XIA jun-chen DAI hu-min hu Guo-an State Key Laboratory of Plastic Forming Simulation and Die ＆ Mould Technology Huazhong University of Science and Teclanology Wuhan 430074 China

Die forging process of piston tail and its key technology are analyzed in detail. The key issue is to reduce friction force between punch and billet to facilitate metal flow towards two ends. Three-step forging scheme is used, namely preforming, final forging and cutting the flash. Preforming is critical for the success of the whole process and two schemes are compared. First two steps are simulated using 3D-Deform software. Simulation results show that the process is feasible and its validity is verified.

关键词： piston tail die forging finite element analysis aluminium alloy

Clinical value of artificial intelligence in hepatocellular carcinoma: Current status and prospect

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Artificial Intelligence in Gastroenterology 2021年第2期2卷 42-55页

作者： Peng-Sheng Yi chen-jun hu chen-hui Li Fei Yu Department of Hepato-Biliary-Pancreas II Affiliated Hospital of North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina Department of Obstetrics and Gynecology Nanchong Traditional Chinese Medicine HospitalNanchong 637000Sichuan ProvinceChina Department of Radiology Yingshan County People’s HospitalNanchong 610041Sichuan ProvinceChina

Hepatocellular carcinoma(HCC)is the most commonly diagnosed type of liver cancer and the fourth leading cause of cancer-related mortality *** early identification of HCC and effective treatments for it have been *** to the sufficient compensatory ability of early patients and its nonspecific symptoms,HCC is more likely to escape diagnosis in the incipient stage,during which patients can achieve a more satisfying overall survival if they undergo resection or liver *** at advanced stages can profit from radical therapies in a limited *** order to improve the unfavorable prognosis of HCC,diagnostic ability and treatment efficiency must be *** past decade has seen rapid advancements in artificial intelligence,underlying its unique usefulness in almost every field,including that of ***,we sought and reviewed studies that put emphasis on artificial intelligence and HCC.

关键词： Hepatocellular carcinoma Artificial intelligence Diagnosis Prognosis Therapy Genomic

Fabrication and Mechano-sensing Characteristics of Bending Polypyrrole Actuator

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 240-245页

作者： chen Jinyou hu Wei School of Automotive Engineering Hunan Financial&Industrial Vocational-technical CollegeHengyang 421002China College of Mechanical and Electrical Engineering Hunan Agricultural UniversityChangsha 410128China

To prepare a conductive polymer actuator with decent performance,a self-built experimental platform for the preparation of polypyrrole film is *** of the essential goals is to examine the mechanical characteristics of the actuator in the presence of various combinations of process parameters,combined with the orthogonal test method of"four factors and three levels".The bending and sensing characteristics of actuators of various sizes are methodically examined using a self-made bending polypyrrole *** functional relationship between the bending displacement and the output voltage signal is established by studying the characteristics of the actuator sensor subjected to various degrees of *** experimental results reveal that the bending displacement of the actuator tip almost exhibits a linear variation as a function of length and *** the voltage reaches 0.8 V,the bending speed of the actuator tends to be ***,the mechanical properties of the self-assembled polypyrrole actuator are verified by the design and fabrication of the microgripper.

关键词： conductive polymer polypyrrole mechanical characteristics actuators sensing characteristics

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu chen Xue-jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

Emerging progress: photochemical transformation of nitroso compounds

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Science China Chemistry 2025年第1期68卷 118-133页

作者： Ze-Le chen Qiang-Qiang Li Armido Studer jun Xuan Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials School of Chemistry & Chemical Engineering Anhui University Organisch-Chemisches Institut Universitat Münster

Nitroso compounds have emerged as highly valuable reaction partners or reagents in organic synthesis due to their rich *** versatile profile of these compounds allows them to function as electrophiles, nucleophiles, diradicals, and radical acceptors in diverse transformations. In recent years, notable progress has been made in harnessing photochemical reactions with nitroso compounds to prepare N,O-containing structures using mild and eco-friendly conditions. Various nitroso compounds like nitrosoarenes, acyloxy nitroso compounds, N-nitrosoamines and nitrites have received significant attention for their ability to introduce NO moieties into complex molecules that are otherwise difficult to access. In this review, we provide an overview of the recent advancements in the visible light-induced conversion of nitroso compounds, with particular emphasis on their role as bifunctional reagents and acceptors of radicals, carbenes and nitrenes.

关键词： nitroso compounds photochemistry radical reaction carbene transformation nitrosoarenes

First observation results of Macao Science Satellite-1 on lightning-induced electron precipitation

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Science China Earth Sciences 2025年第1期68卷 1-10页

作者： Yongping WANG Yixin SUN Qiugang ZONG Gaopeng LU Xudong GU Ze-jun hu Bin LI Key Laboratory for Polar Science Ministry of Natural Resources Polar Research Institute of China Institute of Space Physics and Applied Technology Peking University State Key Laboratory of Lunar and Planetary Science Macau University of Science and Technology School of Earth and Space Sciences University of Science and Technology of China School of Electronic Information Wuhan University

The Medium-energy Electron Spectrometers(MES) is a space-borne instrument onboard Macao Science Satellite-1(MSS-1) dedicated to monitoring the typical charged particle radiation characteristics in the satellite orbit and the process of their occurrence and development, including short bursts of lightning-induced electron precipitation(LEP).This paper presents the first results of the LEP measurements by the MSS-1.47 LEP events are identified with the routine operation for 3 months since satellite launch, all within the range of 1.5

关键词： Lightning-induced electron precipitation Inner radiation belts Energetic electrons Macao Science Satellite-1

间日疟原虫入侵网织红细胞相关蛋白的研究进展

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中国寄生虫学与寄生虫病杂志 2022年第3期40卷 396-401页

作者：石天琪陈军虎中国疾病预防控制中心寄生虫病预防控制所(国家热带病研究中心) 世界卫生组织热带病合作中心科技部国家级热带病国际联合研究中心卫生部寄生虫病原与媒介生物学重点实验室上海200025

间日疟原虫是世界上分布最广泛的疟原虫,也是造成非洲以外地区人群感染疟疾的主要原因。间日疟原虫优先入侵网织红细胞,呈现高度的种特异性。间日疟原虫网织红细胞结合蛋白(PvRBP)家族作为入侵配体,介导了间日疟原虫入侵网织红细胞的新... 详细信息

间日疟原虫是世界上分布最广泛的疟原虫,也是造成非洲以外地区人群感染疟疾的主要原因。间日疟原虫优先入侵网织红细胞,呈现高度的种特异性。间日疟原虫网织红细胞结合蛋白(PvRBP)家族作为入侵配体,介导了间日疟原虫入侵网织红细胞的新途径,是重要的免疫靶点。其中PvRBP2b与转铁蛋白受体1(TfR1),PvRBP2a与CD98的相互作用对间日疟原虫入侵网织红细胞至关重要。Pvrbp家族具有高度多态性并且可产生免疫逃避,能够增加间日疟入侵的效率和致病的严重程度。随着对间日疟原虫入侵分子机制研究的日益加深,研究产生高滴度抗体的疟疾疫苗将成为有效预防和控制疟疾的关键方法。本文就网织红细胞在间日疟原虫感染中的作用,以及Pv RBP家族在人群产生免疫应答的研究进展作一综述。

关键词：间日疟原虫入侵网织红细胞结合蛋白自然获得性免疫

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