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Recent advances and key perspectives of in-situ studies for oxygen evolution reaction in water electrolysis

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Green Energy & Environment 2024年第10期9卷 1497-1517页

作者： Yi Wang zichen xu Xianhong Wu Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Shijingshan DistrictBeijing100049China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian116023China

Electricity-driven water splitting to produce hydrogen is one of the most efficient ways to alleviate energy crisis and environmental pollution problems,in which the anodic oxygen evolution reaction(OER)is the key half-reaction of performance-limiting in water *** the complicated reaction process and surface reconstruction of the involved catalysts under actual working conditions,unraveling the real active sites,probing multiple reaction intermediates and clarifying catalytic pathways through in-situ characterization techniques and theoretical calculations are *** this review,we summarize the recent advancements in understanding the catalytic process,unlocking the water oxidation active phase and elucidating catalytic mechanism of water oxidation by various in-situ characterization ***,we introduce conventionally proposed traditional catalytic mechanisms and novel evolutionary mechanisms of OER,and highlight the significance of optimal catalytic pathways and intrinsic ***,we provide a comprehensive overview of the fundamental working principles,different detection modes,applicable scenarios,and limitations associated with the in-situ characterization ***,we exemplified the in-situ studies and discussed phase transition detection,visualization of speciation evolution,electronic structure tracking,observation of reaction active intermediates,and monitoring of catalytic products,as well as establishing catalytic structure-activity relationships and catalytic ***,the key challenges and future perspectives for demystifying the water oxidation process are briefly proposed.

关键词： In-situ studies Water splitting Oxygen evolution reaction Catalytic mechanism

12-Tungstophosphoric acid niched in Zr-based metal-organic framework:a stable and efficient catalyst for Friedel-Crafts acylation

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Science China Chemistry 2018年第4期61卷 402-411页

作者： Latif Ullah Guoying Zhao zichen xu Hongyan He Muhammad Usman Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Center of Excellence in Nanotechnology King Fahd University of Petroleum and MineralsDhahran 3126Saudi Arabia

Heteropoly acids(HPA) are well known for their versatile solid acid catalysis in diverse chemical reactions, however they suffer from low surface area(<10 m^2/g) and leaching into the reactions media, which reduce their prospects as industrial ***, a novel hybrid material HPW@Zr-BTC,composed of 12-tungstophoric acid(HPW) and Zr^(Ⅳ)-benzene tri-carboxylate(Zr-BTC) metal-organic framework(MOF), was prepared via one-pot solvothermal method. Excellent HPW loading up to 32.3 wt% was achieved, and HPW@Zr-BTC composite proved to be highly stable, besides the crystalline morphology of Zr-BTC was intact. The catalytic activity of the hybrid composite was explored via Friedel-Crafts acylation of anisole with benzoyl *** 28.2 wt% HPW@Zr-BTC showed excellent catalytic performance, with 99.4% anisole conversion and 97.6% yield(pmethoxybenzophenone) under solvent free conditions. Excellent retention of catalytic activity was achieved after at least five consecutive runs due to non-observable HPW leaching. The promising activity and stability of the catalyst forecasted its potential industrial applications.

关键词： dodeca-tungstophosphoric acid Zr-BTC metal-organic frameworks one-pot solvothermal synthesis heterogeneouscatalysis anisole acylation high temperature XRD

Research on the Reform of School-Enterprise Cooperation Teaching and Education Mode for Computer Majors

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Journal of Contemporary Educational Research 2024年第2期8卷 144-150页

作者： zichen xu School of Information Science and Technology Nantong UniversityNantong 226000Jiangsu ProvinceChina

This paper discusses the innovative methods of school-enterprise cooperation education mode in computer applied talent *** innovative training model based on school-enterprise cooperation is proposed to promote the cultivation of students’practical and innovative skills,so as to better adapt to the needs of *** analyzing the key links and influencing factors of the training mode,this paper puts forward some concrete suggestions and measures to provide guidelines for universities and enterprises in personnel training.

关键词： School-enterprise cooperation Computer applied talents Innovative training mode

Recent advances of mechanosensitive genes in vascular endothelial cells for the formation and treatment of atherosclerosis

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Genes & Diseases 2024年第3期11卷 206-219页

作者： Shuyu Li zichen xu Yi Wang Lizhao Chen Xiangxiu Wang Yanghao Zhou Daoxi Lei Guangchao Zang Guixue Wang Key Laboratory of Biorheological Science and Technology of Ministry of Education National and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China College of Basic Medical Sciences Chongqing Medical UniversityChongqing 400016China Department of Neurosurgery Daping HospitalArmy Medical Center of PLAArmy Medical UniversityChongqing 400042China

Atherosclerotic cardiovascular disease and its complications are a high-incidence disease *** studies have shown that blood flow shear has a huge impact on the function of vascular endothelial cells,and it plays an important role in gene regulation of pro-inflammatory,pro-thrombotic,pro-oxidative stress,and cell *** impor-tant endothelial cell mechanosensitive genes have been discovered,including KLK10,CCN gene family,NRP2,YAP,TAZ,HIF-1α,NF-kB,FOS,JUN,TFEB,KLF2/KLF4,NRF2,and *** of them have been intensively studied,whereas the relevant regulatory mechanism of other genes remains *** on these mechanosensitive genes will provide new strategies for therapeutic intervention in atherosclerotic vascular ***,this article reviews the mechanosensitive genes affecting vascular endothelial cells,including classical pathways and some newly screened genes,and summarizes the latest research progress on their roles in the pathogenesis of atherosclerosis to reveal effective therapeutic targets of drugs and provide new insights foranti-atherosclerosis.

关键词： Atherosclerosis Blood flow Endothelial cell Mechanosensitive gene Therapeutic target

Inhibition of in-stent restenosis after graphene oxide double-layer drug coating with good biocompatibility

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Regenerative Biomaterials 2019年第5期6卷 299-309页

作者： Shuang Ge Yadong Xi Ruolin Du Yuzhen Ren zichen xu Youhua Tan Yazhou Wang Tieying Yin Guixue Wang Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China Department of Biomedical Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina

In this study,we designed a double layer-coated vascular stent of 316L stainless steel using an ultrasonic spray system to achieve both antiproliferation and *** coating included an inner layer of graphene oxide(GO)loaded with docetaxel(DTX)and an outer layer of carboxymethyl chitosan(CMC)loaded with heparin(Hep).The coated surface was uniform without aggregation and shedding phenomena before and after stent *** coating treatment was able to inhibit the adhesion and activation of platelets and the proliferation and migration of smooth muscle cells,indicating the excellent biocompatibility and antiproliferation *** toxicity tests showed that the GO/DTX and CMC/Hep coating did not cause deformity and organ abnormalities in zebrafish under *** stents with GO double-layer coating were safe and could effectively prevent thrombosis and in-stent restenosis after the implantation into rabbit carotid arteries for 4–12 weeks.

关键词： graphene oxide drug coating vascular stents restenosis thrombosis

The Mechanics of Tumor Cells Dictate Malignancy via Cytoskeleton-Mediated APC/Wnt/β-Catenin Signaling

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Research 2024年第2期2023卷 659-673页

作者： Xi Chen zichen xu Kai Tang Guanshuo Hu Pengyu Du Junfang Wang Cunyu Zhang Ying Xin Keming Li Qiantang Zhang Jianjun Hu Zhuxue Zhang Mo Yang Guixue Wang Youhua Tan The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen518057China Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing400030China Research Institute of Smart Ageing The Hong Kong Polytechnic UniversityHong KongChina Department of Biomedical Engineering The Hong Kong Polytechnic UniversityHong KongChina Department of Pathology Guizhou Provincial People's HospitalGuiyangGuizhou550002China

Tumor cells progressively remodel cytoskeletal structures and reduce cellular stiffness during tumor progression,implicating the correlation between cell mechanics and ***,the roles of tumor cell cytoskeleton and the mechanics in tumor progression remain incompletely *** report that softening/stiffening tumor cells by targeting actomyosin promotes/suppresses self-renewal in vitro and tumorigenic potential in ***/strengthening actin cytoskeleton impairs/reinforces the interaction between adenomatous polyposis coli(APC)andβ-catenin,which facilitatesβ-catenin nuclear/cytoplasmic ***β-catenin binds to the promoter of Oct4,which enhances its transcription that is crucial in sustaining self-renewal and *** results demonstrate that the mechanics of tumor cells dictate self-renewal through cytoskeleton-APC-Wnt/β-catenin-Oct4 signaling,which are correlated with tumor differentiation and patient *** study unveils an uncovered regulatory role of cell mechanics in self-renewal and malignancy,and identifies tumor cell mechanics as a hallmark not only for cancer diagnosis but also for mechanotargeting.

关键词： diagnosis skeleton APC

An Innovation Sequence Variance Interference Detection Algorithm based on Reference Noise

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An Innovation Sequence Variance Interference Detection Algor...

Habenula,a potential central target for glucose metabolism in type 2 diabetes

第十四届中国卫星导航年会

作者： Yichen Wang Xiaohui Liu Chao Wen zichen xu National University of Defense Technology

Spoofing interference poses a threat to the positioning and timing security of GNSS that cannot be ignored. In traditional spoofing interference detection algorithms, the spoofing rate is often regarded as an unknown constant, which is not consistent with the actual spoofing interference. For the case of spoofing rate jitter in actual spoofing interference, this paper proposes an innovation variance spoofing interference detection algorithm based on reference noise. The jittered spoofing rate is modelled as a random variable obeying nonzero mean Gaussian distribution, and the detection statistics of innovation sequence variance is constructed by comparing the reference noise variance in the stationary no-spoofing state with the innovation sequence variance in the motion state for spoofing interference detection. Simulation results show that the proposed method has high sensitivity and good detection performance for spoofing of jitter rate. Compared with the traditional method, the proposed algorithm has obvious advantages in detection speed under real spoofing environment. In addition, the proposed method is insensitive to the mean of spoofing rate and has positive detection performance especially for slow-varying deception.

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Habenula,a potential central target for glucose metabolism i...

水基页岩抑制剂烷基糖苷季铵盐的页岩强度维持机理研究

中国解剖学会2021年年会

作者： Qu Peng Wang Yachun Sun Yimeng xu zichen Yang Limin School of Medicine Dalian University

The role of the habenular nucleus (Hb) in the pathogenesis of depression has been thoroughly studied,but whether it functions in the pathogenesis of diabetes remains *** this study,type2 diabetes (T2DM) rats, which induced by the high-carbohydrate and fat diet combined with STZ were *** functions of Hb were suppressed by application of electrical *** with the sham group,the expression levels of AMPK phosphorylation and insulin receptor were significantly increased,

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石油科学通报 2020年第1期5卷 67-77页

作者：徐梓辰金衍刘晓敏中国石油大学(北京)油气资源与探测国家重点实验室北京102249 中海油田服务股份有限公司廊坊065201

针对页岩气大位移水平井的防塌问题,通过对页岩微观组成结构的分析,研究了页岩组成矿物遇水膨胀机理,并依据其水化膨胀机理在现有技术烷基糖苷粘土抑制剂的基础上合成了烷基糖苷季铵盐(QASAPG)水基页岩抑制剂,通过滚动回收率、相对抑制... 详细信息

针对页岩气大位移水平井的防塌问题,通过对页岩微观组成结构的分析,研究了页岩组成矿物遇水膨胀机理,并依据其水化膨胀机理在现有技术烷基糖苷粘土抑制剂的基础上合成了烷基糖苷季铵盐(QASAPG)水基页岩抑制剂,通过滚动回收率、相对抑制率、页岩膨胀、水活度测试、粒度分布等实验方法,评价了烷基糖苷季铵盐的抑制性能。结果表明,烷基糖苷季铵盐的岩屑一次回收率大于94.7%,相对回收率大于99%;相对抑制率达99.9%;页岩膨胀高度降低率达67.3%;水溶液水活度可低至0.67;可显著降低钻井液中亚微米粒子含量表现出优异的抑制性能。研究表明,烷基糖苷季铵盐主要通过嵌入及拉紧晶层、静电及羟基吸附成膜、降低水活度、形成封固层等作用来发挥强抑制性能,此外还通过吸附成膜、降低水活度来发挥抑制性能。研究通过岩石力学强度试验证实了烷基糖苷季铵盐较其他种类的抑制剂可以很好的维持岩石的原有强度不降低的特性。

关键词：钻井液烷基糖苷季铵盐页岩抑制剂井壁稳定抑制性能抑制机理