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Frontiers of Chemical Science and Engineering 2021年第4期15卷 998-1007页

作者： wei Xiong Susu Zhou Zeyong Zhao Fang hao Zhihui Cai Pingle Liu Hailiang Zhang Hean luo College of Chemical Engineering National&Local United Engineering Research Centre for Chemical Process Simulation and IntensificationXiangtan UniversityXiangtan 411105China College of Chemistry Xiangtan UniversityXiangtan 411105China

This work proposes a modified activated carbon support,with defects and heteroatoms(N,P-ACs)by nitrogen and phosphorus doping to load non-noble nickel to catalyze aromatic compound *** Ni/N,P-ACs-900(prepared at 900℃)showed promising catalytic activity in liquid-phase 1,5-dinitronaphthalene hydrogenation with a 1,5-diaminonaphthalene yield of 95.8% under the mild condition of 100℃,which is comparable to the commercial Pd/C *** nitrogen species were burned off at 900℃,causing more defects for nickel metal loading,facilitating the interaction between the supports and the nickel metal,and resulting in highly dispersed metal *** computational study of the nickel binding energy has been conducted using density functional *** exhibits that the defects formed by heteroatom doping are beneficial to nickel anchoring and deposition to form highly uniform nickel *** phosphorus species in combination with the defects are suitable for H_(2) adsorption and *** results reveal that the heteroatomic doping on the active carbon shows significant effects in the hydrogenation of the liquid-phase aromatic *** findings could provide a promising route for the rational design of aromatic compound hydrogenation catalysts to significantly decrease the cost by instead using noble metal catalysts in the industry.

关键词： nitrogen and phosphorus doping non-noble nickel catalyst aromatic compounds hydrogenation

Facile synthesis of hollow Ti_(3)AlC_(2)microrods in molten salts via Kirkendall effect

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Journal of Advanced Ceramics 2022年第9期11卷 1491-1497页

作者： Yi LIU Chuangye WANG wei luo Liang BAI Yang XU Xiaodong hao Jianfeng ZHU Shouwu GUO School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China Materials Institute of Atomic and Molecular Science Shaanxi University of Science and TechnologyXi’an 710021China Department of Electronic Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The microstructure and morphology of Ti_(3)AlC_(2)powders not only affect the preparation of Ti_(3)C_(2) MXene but also have a great influence on their potential applications,such as microwave absorbers,alloy additives,or catalytic ***,the synthesis of Ti_(3)AlC_(2)powders with desired microstructure and morphology remains a ***,hollow Ti_(3)AlC_(2)microrods were prepared for the first time in NaCl/KCl molten salts by using titanium,aluminum,and short carbon fibers as starting *** was found that the short carbon fibers not only performed as carbon source but also acted as sacrificial ***,it was revealed that TiC and Ti2AlC were initially formed on the surface of carbon *** subsequent reactions between the outer Ti,Al and the inner carbon were dominated by the Kirkendall effect which gave rise to the formation of a hollow *** on this mechanism,hollow Ti_(3)AlC_(2)microspheres and a series of hollow TiC,Ti_(2)AlC,and V_(2)AlC powders were also successfully *** work provides a facile route to synthesize hollow MAX phases and may give enlightenment on preparing other hollow carbide powders via the Kirkendall effect in the molten salts.

关键词： Ti_(3)AlC_(2) molten salt synthesis(MSS) hollow structure Kirkendall effect

Application of in-situ characterization techniques in modern aqueous batteries

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Rare Metals 2024年第8期43卷 3553-3575页

作者： Jia-hao Wu Hong-wei Cai Zhao-Hui Deng Jean-Jacques Gaumet Yu Bao Wen luo Department of Physics State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Laboratoire de Chimie Et Physique:Approche Multi-Echelles Des Milieux Complexes(LCP-A2MC)Institut Jean BarriolUniversitéde Lorraine57070MetzFrance Department of Medicinal Chemistry Hubei College of Chinese MedicineJingzhou 434020China

The development of high-performance aqueous batteries calls for an in-depth knowledge of their chargedischarge redox and failure mechanism,as well as a systematic understanding of the dynamic evolution of microstructure,phase composition,chemical composition,and local chemical environment of the materials for ***-situ characterization technology is expected to understand and reveal the problems faced by aqueous rechargeable batteries,such as the dissolution of electrode materials,the growth of metal negative electrode dendrites,passivation,corrosion,side reactions and a series of *** on this,typical in-situ characterization techniques and their basic mechanisms are summarized,including in-situ optical visualization,in-situ microscopy techniques(in-situ scanning electron microscopy(SEM),in-situ transmission electron microscopy(TEM)),in-situ X-ray techniques(in-situ X-ray diffraction(XRD),in-situ X-ray photoelectron spectroscopy(XPS),in-situ near-edge structural X-ray absorption spectroscopy(XANES)),and in-situ spectroscopy techniques(in-situ Raman spectroscopy,in-situ Fourier transform infrared(FTIR)).Moreover,some emerging techniques concerning aqueous battery research,especially gas evolution and materials dissolution issues,such as in-situ electrochemical quartz crystal microbalance(EQCM).in-situ fiber-optic sensing,in-situ gas chromatography(GC) are *** last,the applications of advanced in-situ characterizations in future research of aqueous batteries are emphasized and discussed,along with some of the remaining challenges and possible solutions.

关键词： Aqueous battery In-situ characterization Phase transformation Solid electrolyte interphase Zinc dendrite growth

Osteopontin inhibits osteoarthritis progression via the OPN/CD44/PI3K signal axis

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Genes & Diseases 2022年第1期9卷 128-139页

作者： Qing Liu hao Zeng Yuhao Yuan Zhiwei Wang Ziyi Wu wei luo Department of Orthopaedics Xiangya HospitalCentral South University87th Xiangya RoadChangshaHunan 410008PR China Department of Spine Surgery The Second Xiangya HospitalCentral South University139th Renmin Middle RoadChangshaHunan 410011PR China Molecular Oncology Laboratory Department of Orthopaedic Surgery and Rehabilitation MedicineThe University of Chicago Medical CenterChicagoIL 60637USA

Chondrocyte degeneration and extracellular matrix component loss are the primary causes of osteoarthritis(OA).OA can be treated by inhibiting chondrocyte degeneration and increasing extracellular matrix component ***(OPN),a multifunctional protein,has gained immense attention with regard to its involvement in *** study aimed to explore the therapeutic value and mechanism of action of OPN in OA *** of the histomorphological analysis revealed a worn-off OA cartilage tissue surface,cartilage matrix layer deterioration,and calcium salt *** to that in normal chondrocytes,in OA chondrocytes,the OPN,CD44,and PI3K protein and mRNA expression was ***,siOPN,rhOPN,and rhOPN plus LS-C179404 interfered with OA *** verified in mice,OPN directly inhibited the expression level of PI3K in OA chondrocytes by binding with *** analysis of the knee joints demonstrated that OPN effectively inhibited OA progression via the OPN/CD44/PI3K signal *** conclusion,OPN activates intracellular PI3K signaling molecules by binding to CD44 on the cell surface to cause downstream cascading effects,thereby delaying chondrocyte degeneration and reducing cartilage matrix component loss;therefore,OPN is a potential therapeutic agent for OA.

关键词： Cartilage degeneration Cartilage matrix CD44 Osteoarthritis Osteopontin Phosphatidylinositol-3-kinase

Precipitation evolution and properties of Cu-15Ni-8Sn alloys via Al microalloying during ageing

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Rare Metals 2024年第10期43卷 5216-5228页

作者： wei luo Li-Jun Peng Xu-Jun Mi hao-Feng Xie Yi-Cheng Cao Shu-Hui Huang State Key Laboratory of Nonferrous Metals and Processes GRINM Group Co.Ltd.Beijing 100088China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China General Research Institute for Nonferrous Metals Beijing 100088China School of Materials Science and Engineering South China University of TechnologyGuangzhou 510640China

Studies have shown that microalloying Cu-Ni-Sn alloys using Al inhibits discontinuous precipitation reactions;however,the mechanism has not been investigated ***,this study explored the properties and precipitation evolution of Cu-15Ni-8Sn alloys without and with 1 wt%Al(Cu-15Ni-8Sn-1Al)during ageing at 500℃ through X-ray diffraction(XRD),scanning electron microscopy and high-angle annular dark-field scanning transmission electron *** results revealed that in Cu-15Ni-8Sn alloy,DO_(22)ordering first occurred after spinodal decomposition,subsequently transitioning to an L1_(2)ordering phase,during which the discontinuous precipitates gradually nucleated at the grain boundaries and formed *** alloy hardness increased sharply with ordering and then decreased rapidly after reaching its peak value,due to the dominance of the discontinuous precipitation ***,the DO_(22)ordered phase did not appear during the ageing of Cu-15Ni-8Sn-1Al alloy,and a Ni_(3)(Al_(x),Sn_(1-x))intermetallic compound with L1_(2)structure was formed,consuming Ni and Sn atoms,thereby significantly suppressing the discontinuous precipitation reaction and improving the stability during prolonged *** tensile strength(yield strength)of Cu-15Ni-8Sn and Cu-15Ni-8Sn-1Al alloys at peak hardness were 855(755)and 936 MPa(892 MPa),respectively,and their main strengthening mechanisms were solid solution strengthening and precipitation *** addition of 1 wt%Al effectively improved the precipitation strengthening effect of Cu-Ni-Sn alloys but severely decreased the ductility.

关键词： Cu-15Ni-8Sn Al addition Precipitation sequence Strengthening mechanism

面向教学的RISC_SPM处理器设计与验证

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信息技术与信息化 2025年第1期 19-23页

作者：解鹏越卫建华郝子坤罗鑫迪西安工程大学电子信息学院陕西西安710600

针对当前国内微处理器实验教学的需求,文章设计了一款面向教学用途的RISC_SPM微处理器,优化资源利用和执行效率。处理器采用内部存储器布局,资源占用少,执行速度快。通过状态机控制方法,使得运行过程更加直观清晰,克服了传统实验中灵活... 详细信息

针对当前国内微处理器实验教学的需求,文章设计了一款面向教学用途的RISC_SPM微处理器,优化资源利用和执行效率。处理器采用内部存储器布局,资源占用少,执行速度快。通过状态机控制方法,使得运行过程更加直观清晰,克服了传统实验中灵活性不足的问题,为实验者提供了创新空间。设计过程中使用Verilog语言,支持多种寻址方式,具备完善的指令系统,能够执行一般微处理器的功能操作,满足实验教学中的实际需求并提升学生的实践能力和创新意识,为科研工作奠定了良好的基础。

关键词：微处理器精简指令集现场可编程逻辑门阵列存储器位于芯片内部 FPGA

Metabolic imaging for guidance of curative treatment of isolated pelvic implantation metastasis after resection of spontaneously ruptured hepatocellular carcinoma: A case report

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World Journal of Gastroenterology 2016年第41期22卷 9242-9246页

作者： Bing hao wei Guo Na-Na luo hao Fu hao-Jun Chen Long Zhao Hua Wu Long Sun Department of Nuclear Medicine and Minnan PET Center Xiamen Cancer Hospital the First Hospital of Xiamen University

Spontaneous rupture of hepatocellular carcinoma(HCC) is a life-threatening complication and its prognosis is significantly poor because of the high recurrence rate after initial hepatectomy. Resection of isolated extrahepatic metastasis of HCC has been advocated to obtain a possibility of long-term survival. However, it is a challenge for clinicians to detect implantation metastasis of spontaneously ruptured HCC. Accurate re-staging plays the most important role in making a decision on isolated metastasis resection. 18F-fluorodeoxyglucose(18F-FDG) positron emission tomography/computed tomography(PET/CT) is useful in detecting intraabdominal implantation metastasis from a variety of malignancies and shows superior accuracy to conventional imaging modalities in determining the location of metastasis. We present one patient with a new isolated pelvic implantation metastasis detected by 18F-FDG PET/CT and pathologically confirmed by PET/CT-guided percutaneous biopsy, who had a history of resection of spontaneously ruptured HCC two years ago. The patient's condition was stable at the 6-mo follow-up after resection of the isolated pelvic metastasis.

关键词： Fluorodeoxyglucose Positron emission tomography/computed tomography Spontaneously ruptured hepatocellular carcinoma Isolated pelvic implant metastasis Re-staging Surgical resection

Isolated atomic catalysts encapsulated in MOF for ultrafast water pollutant treatment

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Nano Research 2021年第7期14卷 1287-1293页

作者： Shuailong Guo hao Yuan wei luo Xiaoqing Liu Xiantao Zhang haoqing Jiang Feng Liu Gary J.Cheng The Institute of Technological Sciences Wuhan UniversityWuhan430072China Birck Nanotechnology Centre School of Industrial EngineeringPurdue UniversityWest LafayetteIN47906USA School of Power and Mechanical Engineering Wuhan UniversityWuhan430072China Center for materials research and analysis Wuhan University of TechnologyWuhan430072China

Atomic noble metals stand as one of the most advanced catalysts because of their unique properties and interaction with the ***,due to their high activity,noble atomic catalysts tend to aggregate and deactivate in practical ***,supports aimed to disperse these atomic catalysts often suffer from weak confinement and poor porosity,thus limited the catalytic efficiency of noble ***,we report the facile encapsulation of atomic noble catalyst in cheap cerous metal-organic framework(Ce-MOF)crystals to create a robust catalyst that could deliver high catalytic performance for the reduction of 4-nitrophenol without decay in long-term cycling ***,Au atoms encapsulated in Ce-MOF exhibited ultrahigh turnover frequency(TOF)of 131 min−1 for the reduction of 4-nitrophenol in minutes,consuming only 10%precious metals compared with state-of-the-art catalysts operated under same condition.

关键词： atomic catalysts metal-organic framework reduction of 4-nitrophenol porous

Hydrogen peroxide enabled two-dimensional molybdenum trioxide nanosheet clusters for enhanced surface Li-ion storage

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Tungsten 2021年第3期3卷 338-347页

作者： Han wei hao-Yu Yang Xiao-Qi Zhang Jian-Feng Zhu Peng-Peng Qiu wei luo School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China School of Chemistry and Physics Centre for Materials ScienceQueensland University of Technology(QUT)BrisbaneQLD 4001Australia College of Materials Science and Engineering Institute of Functional MaterialsDonghua UniversityShanghai 201620China

Molybdenum trioxide(MoO3)is regarded as a promising electrode material for lithium(Li)-ion batteries because of its unique layered structure with a high theoretical capacity(~1117 mAh·g-1).Till now,numerous researches have focused on tuning MoO3 morphology to improve its electrochemical ***,the fabrication of MoO3 with a two-dimensional(2D)nanosheet clusters structure has yet been ***,we report a facile one-step solvothermal method to prepare MoO3 nanosheets,of which the morphology can be facilely tuned via the dose of hydrogen *** the experimental results and theoretical calculation suggest that the resultant 2D nanosheets structure could reduce the diffusion paths,which is beneficial for the intercalation of *** a result,the nanosheets assembled Li-ion battery has a reversible specific capacity of 756.1 mAh·g-1 at 0.5·g-1,and maintained at 214.7 mAh·g-1 after 600 cycles at a current density of 1 A·g-1with the Coulombic efficiency as high as 97.17%.

关键词： Molybdenum Trioxide One-step solvothermal method Nanosheets Lithium-ion batteries

Rejuvenation of BMSCs senescence by pharmacological enhancement of TFEB-mediated autophagy alleviates aged-related bone loss and extends lifespan in middle aged mice

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Bone Research 2024年第3期12卷 661-674页

作者： Ziwei luo Wanyi wei Dawei Qiu Zixia Su Liangpu Liu Honghai Zhou hao Cui Li Yang College of Orthopedics Guangxi University of Chinese MedicineNanning 530200 GuangxiChina Faculty of Chinese Medicine Science Guangxi University of Chinese MedicineNanning 530200 GuangxiChina Department of Physical Education Guangxi University of Chinese MedicineNanning 530200 GuangxiChina Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica Guangxi University of Chinese MedicineNanning 530200 GuangxiChina College of Pharmacy Guangxi University of Chinese MedicineNanning 530200 GuangxiChina Key Laboratory of Biorheological Science and Technology Ministry of EducationBioengineering CollegeChongqing UniversityChongqing 400030China

Bone marrow stromal/stem cells(BMSCs)are generally considered as common progenitors for both osteoblasts and adipocytes in the bone marrow,but show preferential differentiation into adipocytes rather than osteoblasts under aging,thus leading to senile *** evidences indicate that rejuvenation of BMSCs by autophagic enhancement delays bone aging.

关键词： senile osteoporosis progenitor