检索结果-南通市图书馆

Multistep evolution from a metal–organic framework to ultrathin nanosheets

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2019年第14期64卷 964-967页

作者： Yun Li Jin Huang zong-wen mo Xue-wen Zhang Xiao-Ning Cheng Li Gong Dong-Dong Zhou Jie-Peng Zhang moE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry Sun Yat-Sen University Guangzhou 510275 China Instrumental Analysis and Research Center Sun Yat-Sen University Guangzhou 510275 China

Two-dimensional (2D) materials and ultrathin nanosheets have attracted tremendous research interests [1-4]. Exfoliation of porous coordination polymers (PCPs) or metal-organic frameworks (moFs) with 2D coordination structures is emerging as a viable strategy for preparation of new types of 2D materials [5-8]. The relatively weak bonding within and strong interactions between 2D coordination networks are the main problems for successful exfoliation [9]. Pretreatments of the layered moFs to expand the interlayer distances can be helpful [10-12]. Capturing the exfoliation intermediates and visualizing their structures are valuable for understanding the exfoliation mechanism and confirming the structures of the final 2D materials [11,12].

关键词： Two-dimensional (2D) porous coordination polymers (PCPs) metal-organic frameworks (moFs)

Flexibility of Metal-Organic Framework Tunable by Crystal Size at the Micrometer to Submillimeter Scale for Efficient Xylene Isomer Separation

在线全文

学校读者我要写书评

暂无评论

Research 2019年第1期2019卷 433-441页

作者： Xiao Yang Hao-Long Zhou Chun-Ting He zong-wen mo Jia-wen Ye Xiao-Ming Chen Jie-Peng Zhang moE Key Laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-Sen UniversityGuangzhou 510275China

Understanding,controlling,and utilizing the flexibility of adsorbents are of great importance and *** with conventional solid materials,downsizing to the nanoscale is emerging as a possible strategy for controlling the flexibility of porous coordination polymers(or metal-organic frameworks).We report a unique flexibility controllable by crystal size at the micrometer to submillimeter *** removal transforms[Cu_(2)(pypz)_(2)]·0.5p-xylene(MAF-36,Hpypz=4-(1H-pyrazol-4-yl)pyridine)with one-dimensional channels toα-[Cu_(2)(pypz)_(2)]with discrete small cavities,and further heating gives a nonporous isomerβ-[Cu_(2)(pypz)_(2)].Both isomers can adsorb p-xylene to give[Cu_(2)(pypz)_(2)]·0.5p-xylene,meaning the coexistence of guest-driven flexibility and shape-memory *** phase transition temperature fromα-[Cu_(2)(pypz)_(2)]toβ-[Cu_(2)(pypz)_(2)]decreased from~270℃ to~150℃ by increasing the crystal size from the micrometer to the submillimeter scale,ca.2-3 orders larger than those of other size-dependent ***-crystal X-ray diffraction showed coordination bond reconstitution and chirality inversion mechanisms for the phase transition,which provides a sufficiently high energy barrier to stabilize the metastable phase without the need of downsizing to the *** virtue of the crystalline molecular imprinting and gate-opening effects,α-[Cu_(2)(pypz)_(2)]andβ-[Cu_(2)(pypz)_(2)]show unprecedentedly high p-xylene selectivities of 16 and 51,respectively,as well as ultrafast adsorption kinetics(<2 minutes),for xylene isomers.

关键词： isomers coordination adsorbent

Microglia lactylation in relation to central nervous system diseases

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 29-40页

作者： Hui Yang Nan mo Le Tong Jianhong Dong Ziwei Fan Mengxian Jia Juanqing Yue Ying Wang School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Clinical Laboratory The Fourth Clinical Medical College of Zhejiang University of Traditional Chinese Medicine(Hangzhou First People’s Hospital)HangzhouZhejiang ProvinceChina College of Medical Veterinary and Life SciencesUniversity of GlasgowGlasgowUK Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina

The development of neurodegenerative diseases is closely related to the disruption of central nervous system ***,as innate immune cells,play important roles in the maintenance of central nervous system homeostasis,injury response,and neurodegenerative *** has been considered a metabolic waste product,but recent studies are revealing ever more of the physiological functions of *** is an important pathway in lactate function and is involved in glycolysis-related functions,macrophage polarization,neuromodulation,and angiogenesis and has also been implicated in the development of various *** review provides an overview of the lactate metabolic and homeostatic regulatory processes involved in microglia lactylation,histone versus non-histone lactylation,and therapeutic approaches targeting ***,we summarize the current research on microglia lactylation in central nervous system diseases.A deeper understanding of the metabolic regulatory mechanisms of microglia lactylation will provide more options for the treatment of central nervous system diseases.

关键词： brain central nervous system glycolysis immune response inflammation lactate metabolism lactate lactylation microglia neurodegenerative diseases

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying mo Biao Zheng Miaomiao Han Qin Zhong wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Direct Photolithography of WO_(x)Nanoparticles for High‑Resolution Non‑Emissive Displays

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第3期17卷 297-309页

作者： Chang Gu Guojian Yang wenxuan Wang Aiyan Shi wenjuan Fang Lei Qian Xiaofei Hu Ting Zhang Chaoyu Xiang Yu‑mo Zhang Laboratory of Optoelectronic Information Technology and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Hangzhou Bay Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315336People’s Republic of China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012People’s Republic of China

High-resolution non-emissive displays based on electrochromic tungsten oxides(WOx)are crucial for future near-eye virtual/augmented reality interactions,given their impressive attributes such as high environmental stability,ideal outdoor readability,and low energy ***,the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron ***,we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand *** strategy enabled us to achieve ultra-high resolution efficiently(line widthmodulation(55.9%),and durability(>3600 cycles),as well as promising applications in electronic logos,pixelated displays,flexible electronics,*** success and advancements presented here are expected to inspire and accelerate research and development(R&D)in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

Discovery of a new family member of arsenic–vanadium polyoxometalates with high catalytic performance for one-pot coupling of CO2, epoxides and amines

在线全文

学校读者我要写书评

暂无评论

Tungsten 2025年第1期7卷 80-87页

作者： Fang-Qian Wang Yin Zhang Wei-Wei Wang Mei-Qian Fu Hong-Bing mo Wei-Dong Yu Chao Liu Jun Yan College of Chemistry and Chemical Engineering Central South University Junior Education Department Changsha Normal University School of Science Hunan University of Technology and Business

Arsenic-vanadium polyoxometalates（POMs） represent a family of tremendous potential catalysts owing to their peculiar physical and chemical *** in CO2conversion,using POMs to catalyze the conversion of CO2and epoxide into chemical intermediates is the research ***,A new family number of arsenic-vanadium POMs,[N（CH3）4]4[As8V12O38（H2O）]·2H2O({As8V12O38}),was reported and characterized by single-crystal X-ray diffraction,fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,*** from other allotropicity,{As8V12O38}shows a different structure pattern with an I-43d *** obtained {As8V12O38} was employed as a catalyst for the *** initial catalytic reaction confirmed that {As8V12O38} can catalyze the formation of epoxy carbonate by using 1.01 kPa CO2and epoxide at 70℃.Furtherly,when added amine in the catalytic system,oxazolidinone could be obtained by high yields,which provides an efficient way to convert CO2into profitable ***,a possible catalytic reaction mechanism was proposed by using different characterization analyses.{As8V12O38} first catalyzes the epoxide and CO2to form an epoxy carbonate and then catalyzes epoxy carbonate and benzylamine into oxazolidinone.

关键词： Arsenic CO2 conversion Oxazolidinone Polyoxometalates Vanadium

Acetyl-11-keto-beta-boswellic acid promotes sciatic nerve repair after injury: molecular mechanism

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2022年第12期17卷 2778-2784页

作者： Yao Wang zong-Liang Xiong Xiang-Lin Ma Chong Zhou mo-Han Huo Xiao-wen Jiang wen-Hui Yu Department of Veterinary Medicine Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina College of Life Sciences Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina Key Laboratory of Heilongjiang Education Department for Common Animal Disease Prevention and Treatment Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina Institute of Chinese Veterinary Medicine Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina

Previous studies showed that acetyl-11-keto-beta-boswellic acid(AKBA),the active ingredient in the natural Chinese medicine Boswellia,can stimulate sciatic nerve injury repair via promoting Schwann cell ***,the underlying molecular mechanism remains poorly *** this study,we performed genomic sequencing in a rat model of sciatic nerve crush injury after gastric AKBA administration for 30 *** found that the phagosome pathway was related to AKBA treatment,and brain-derived neurotrophic factor expression in the neurotrophic factor signaling pathway was also highly *** further investigated gene and protein expression changes in the phagosome pathway and neurotrophic factor signaling *** expression in the phagosome pathway was markedly decreased,and brain-derived neurotrophic factor,nerve growth factor,and nerve growth factor receptor expression levels in the neurotrophic factor signaling pathway were greatly ***,expression levels of the inflammatory factors CD68,interleukin-1β,pro-interleukin-1β,and tumor necrosis factor-αwere also *** basic protein-andβ3-tubulin-positive expression as well as the axon diameter-to-total nerve diameter ratio in the injured sciatic nerve were also *** findings suggest that,at the molecular level,AKBA can increase neurotrophic factor expression through inhibiting myeloperoxidase expression and reducing inflammatory reactions,which could promote myelin sheath and axon regeneration in the injured sciatic nerve.

关键词： AKBA axon genomics inflammatory injury and repair myelin sheath myeloperoxidase neurotrophic factor peripheral nerve phagosome pathway regeneration Sprague-Dawley rat

A novel variable topology design for a multi-flexible ejection mechanism

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2020年第2期16卷 432-438页

作者： Hao Liu Jun Zhou zong-lai mo Shi-wei Zhang School of Astronautics Northwestern Polytechnical UniversityXi'an710072China School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China Luoyang Opto-Electro Technology Development Center 471009China

The airborne missile launch mechanism often subjects to significant deformations induced by the large ejection force during high-speed actuations in missile ejection process,leading to a substantial deviation of separation parameters from designed values that threats safety of the *** study proposes a novel variable topology design for launch mechanism,achieved via a Prsmatic-Revolute-Revolute pair(PR-R)motion formed by the structural gap with a specific *** enables launch mechanism variability during missile ejection process and optimizes the ejection force given by the front and back ejection arms,and greatly optimizes the separation parameters during missile *** kinetics simulation analysis is conducted under working conditions of the original ejection mechanism and the novel mechanism with variable topology design,*** results show that the novel variable topology design is more befitting for the launch process in terms of system safety and controllability,effectively improving the separation posture,restraining the flexible effect of the mechanism,and fulfilling the effectiveness of the design value of multi-rigid body.

关键词： Variable topology Gap dynamics Multi-flexible body Flexible control Ejection mechanism

在线全文

学校读者我要写书评

暂无评论

法治是中国式现代化的重要保障

新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 7-16,F0002页

作者：莫纪宏中国社会科学院法学研究所北京100720

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保... 详细信息

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保障中国式现代化中的能力,推动法治与现代化同频共振、并肩前行发挥了政策引领作用。从法理层面准确认识法治对中国式现代化的保障机制和制度功能,要从历史维度、政治维度、理论维度、比较维度和实践维度“五个维度”有机统一的角度认识中国式现代化的具体特征和制度形态,针对不同层面的中国式现代化目标采取不同性质的法治应对和保障措施。法治在中国式现代化进程中,通过保障制度现代化推进中国式现代化。其中,法治自身也需要现代化。没有法治现代化就没有社会主义现代化。法治在推进中国式现代化过程中,通过不断提升自身效能和保障能力,逐步实现自身的现代化,成为中国式现代化事业的重要组成部分。

关键词：法治中国式现代化历史维度政治维度理论维度比较维度实践维度