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Characterization of porous cobalt hexacyanoferrate and activated carbon electrodes under dynamic polarization conditions in a sodium-ion pseudocapacitor

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Journal of Energy Chemistry 2021年第3期30卷 53-62页

作者： Bruno Morandi Pires Willian Goncalves Nunes Bruno Guilherme Freitas Francisca Elenice Rodrigues Oliveira Vera Katic Cristiane Barbieri Rodella Leonardo Morais Da Silva Hudson Zanin Advanced Energy Storage Division Manufacturing CroupCarbon Sci-Tech LabsCenter for Innovation on New EnergiesUniversity of CampinasCampinas 13083-852SPBrazil Brazilian Synchrotron Light Laboratory(LNLS/Brazilian Center of Energy and Materiab(CNPEM)) Campinas 13083-970SPBrazil Department of Chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha and Mucuri's VatleyAlto dajacuba 39100-000Diamantina-MGBrazil

We report here the activated carbon and cobalt hexacyanoferrate composite,which is applied as the electrode materials in symmetric supercapacitors containing a 1.0 M Na_(2)SO_(4) aqueous *** novel material combines high specific surface area and electrochemical stability of activated carbon with the redox properties of cobalt hexacyanoferrate,resulting in maximum specific capacitance of 329 F g^(-1) with large voltage working window of 2.0 *** studies indicated that cobalt hexacyanoferrate introduces important pseudocapacitive properties accounting for the overall charge-storage process,especially when I<0.5 A g^(-1).At lower gravimetric currents(e.g.,0.05 A g^(-1))and up to 1.0 V,the presence of cobalt hexacyanoferrate improves the specific energy for more than 300%.In addition,to better understanding the energy storage process we also provided a careful investigation of the electrode materials under dynamic polarization conditions using the in situ Raman spectroscopy and synchrotron light Xray diffraction *** complementary findings were obtained in these *** believe that this novel electrode material is promising for applications regarding the energy-storage process in pseudocapacitors with long lifespan properties.

关键词： Operando studies Raman XRD synchrotron light Cobalt hexacyanoferrate Activated carbon High specific capacitance

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船舶主尺度方案的博弈优选

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中国舰船研究 2010年第6期5卷 46-50页

作者：杨二波陈明大连理工大学船舶cad工程中心辽宁大连116024

优化选择的船舶主尺度方案需要具有较好的经济性、技术性能,而博弈论是研究解决、优化决策选择的科学,根据船舶主尺度方案优选问题与经济学中博弈问题之间的相似性,从博弈的观点确定了船舶设计中的博弈方及其对应的策略空间,即各设计目... 详细信息

优化选择的船舶主尺度方案需要具有较好的经济性、技术性能,而博弈论是研究解决、优化决策选择的科学,根据船舶主尺度方案优选问题与经济学中博弈问题之间的相似性,从博弈的观点确定了船舶设计中的博弈方及其对应的策略空间,即各设计目标视为博弈问题博弈方;设计变量集合视为所有博弈方的战略集组合,从而提出了船舶主尺度方案优选设计问题的博弈方法。通过实例应用表明,合作博弈论方法能更好地综合反映设计目标的要求,优选结果更加合理。

关键词：船舶设计船舶主尺度多目标优化博弈论

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Peripheral smear reckons the nature of IgM cold agglutinins:A case-based study asserting the role of thermal amplitude and clonality

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Rheumatology & Autoimmunity 2023年第1期3卷 63-65页

作者： Kriti Chauhan Pathology Polo Labs Pvt.LtdMohaliPunjabIndia

To the Editor,Cold agglutinin disease(cad)is an IgM type of autoimmune disease with complement-mediated lysis of red blood cells(RBCs)usually characterized by clumping of RBCs.1 While RBC agglutination causes clinical symptoms of hemolytic anemia,agglutination caused by cold agglutinin is a notorious preanalytical and analytical factor that leads to spurious automated complete blood count results like falsely elevated mean corpuscular volume and decreased RBC count.2,3 The pathogenicity of IgM antibodies(Abs)and the peripheral smear findings are mainly determined by their thermal amplitude(TA)and clonality rather than their *** shed some light on this,the authors would like to present four cases of hemolytic anemia,which on further evaluation tested positive for polyspecific direct Coomb's test.

关键词： anemia elevated clinical

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基于I-deas的工装cad系统中知识库系统的研究

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中国工程科学 2004年第10期6卷 71-74页

作者：尹晓伟郝永平钱文学魏永合沈阳理工大学cad/CAM技术研究与开发中心沈阳110168 东北大学机械工程与自动化学院沈阳110004

论述了基于三维建模软件I-deas的工装cad系统中工装知识库系统的结构、功能及其子库实现方法 ,分析了子库之间的相互关系。以开发的工装设计管理系统中工装知识库系统开发为例。

关键词：工装基于知识的工程工装知识库成组技术 I-deas

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液压挖掘机工作装置的动力特性修改研究

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中国工程科学 2005年第9期7卷 30-33页

作者：杨为冯培恩秦大同重庆大学机械传动国家重点实验室重庆400044 浙江大学cad&CG国家重点实验室杭州310027

为提高液压挖掘机工作装置动态性能的优化效率,在对该结构进行试验模态研究的基础上,用双模态空间动力修改方法进行了动力特性修改研究,研究结果表明:质量修改对该结构的1阶、2阶固有频率和阻尼比有显著影响,对其他阶结构动态特性的影... 详细信息

为提高液压挖掘机工作装置动态性能的优化效率,在对该结构进行试验模态研究的基础上,用双模态空间动力修改方法进行了动力特性修改研究,研究结果表明:质量修改对该结构的1阶、2阶固有频率和阻尼比有显著影响,对其他阶结构动态特性的影响很小;刚度修改对该结构1阶至5阶的固有频率和阻尼比均有明显影响,高阶的固有频率和阻尼比对刚度的变化敏感。所得到的结论揭示了模态参数调整对液压挖掘机工作装置动力特性的影响规律,为提高机械产品的总体质量奠定了基础。

关键词：双模态空间动力修改法模态液压挖掘机工作装置

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Raman probing carbon&aqueous electrolytes interfaces and molecular dynamics simulations towards understanding electrochemical properties under polarization conditions in supercapacitors

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Journal of Energy Chemistry 2021年第9期30卷 279-292页

作者： Rafael Vicentini Leonardo M.Da Silva Débora V.Franco Willian G.Nunes Juliane Fiates Gustavo Doubek Luís F.M.Franco Renato G.Freitas Cristiano Fantini Hudson Zanin Advanced Energy Storage Division Carbon Sci-Tech LabsUniversity of CampinasAv Albert Einstein 400CampinasSP 13083-852Brazil Department of Chemistry Federal University of Jequitinhonha and Mucuri’s ValleyRodovia MGT 367km 5835000Alto da Jacuba39.100-000 DiamantinaMGBrazil Advanced Energy Storage Division Center for Innovation on New EnergiesLaboratory of Advanced BatteriesSchool of Chemical EngineeringUniversity of Campinas(UNICAMP)CampinasSP 13083-852Brazil Department of Chemistry Federal University of Mato GrossoICET-UFMT78060-900 CuiabáMTBrazil Departamento de Física ICExUniversidade Federal de Minas GeraisBelo HorizonteMG 31270-901Brazil

Raman probing of carbon electrode and electrolyte under dynamic conditions is performed here using different aqueous electrolytes to elucidate the fundamental events occurring in electrochemical supercapacitor during charge–discharge *** areal capacitance ranges from 1.54 to 2.31μF cm^(-2)μm and it is determined using different *** findings indicate that the Helmholtz capacitance governs the overall charge-storage process instead of the space charge(quantum)capacitance commonly verified for HOPG electrodes in the range of~3 to 7μF cm^(-2).Molecular dynamics simulations are employed to elucidate the origin of the reversible Raman spectral changes during the charge–discharge processes.A correlation is verified between the reversible Raman shift and the surface excesses of the different ionic species.A theoretical framework is presented to relate the effect of the applied potential on the Raman shift and its correlation with the surface ionic *** is proposed that the Raman shift is governed by the interaction of solvated cations with graphite promoted by polarization *** is the first time that a comparative study on different aqueous electrolyte p H and cation ion size has been performed tracking the Raman spectra change under dynamic polarization conditions and contrasting with comprehensive electrochemistry and dynamic molecular simulations *** study shines lights onto the charge-storage mechanism with evidence of Kohn anomaly reduction in the carbon electrode during the reversible adsorption/desorption and insertion/extraction of ionic species.

关键词： Defect reorganization in graphite Surface excess of charge Operando Raman studies Electrical double-layer capacitors

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Review of the development of Lunar Laser Ranging

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Astronomical Techniques and Instruments 2024年第6期1卷 295-306页

作者： Kai Huang Yongzhang Yang Rufeng Tang Jin Cao Marco Muccino Luca Porcelli Simone Dell'Agnello Yuqiang Li Yunnan Observatories Chinese Academy of SciencesKunming 650216China University of Chinese Academy of Sciences Beijing 100049China College of Mathematics and Physics Leshan Normal UniversityLeshan 614000China National Institute of Nuclear Physics-Frascati National labs Frascati 00044Italy Key Laboratory of Space Object and Debris Observation Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China

This paper provides a comprehensive overview of the development of Lunar Laser Ranging(LLR),covering key components such as ground observatories,lunar retro-reflectors,and data *** paper details the evolution of LLR experiments conducted by some major world-class observatories,with a particular focus on addressing critical issues associated with LLR ***,the article highlights the latest advancements in the field,elucidating scientific achievements derived from LLR data,including its contributions to gravitational theory,Earth Orientation Parameters,lunar physics exploration,and lunar *** review summarizes new challenges in LLR modeling and concludes with prospects for the future development of LLR.

关键词： Lunar Laser Ranging Retro-reflectors Observatories Gravity

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MAVS Antagonizes Human Stem Cell Senescence as a Mitochondrial Stabilizer

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Research 2024年第2期2023卷 239-257页

作者： Cui Wang Kuan Yang Xiaoqian Liu Si Wang Moshi Song Juan Carlos Izpisua Belimonte Jing Qu Guang-Hui Liu Weiqi Zhang CAS Key Laboratory of Genomic and Precision Medicine Beijng Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Institute for Stem Cell and Regeneration Chinese Academy of Sciences Beijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Bejing 100101China Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Altos labs Inc.San DiegoCA 94022USA

Mitochondrial dysfunction is a hallmark feature of cellular senescence and organ ***,we asked whether the mitochondrial antiviral signaling protein(MAVS),which is essential for driving antiviral response,also regulates human stem cell *** answer this question,we used CRISPR/Cas9-mediated gene editing and directed differentiation techniques to generate various MAVS-knockout human stem cell *** found that human mesenchymal stem cells(hMSCs)were sensitive to MAVS deficiency,as manifested by accelerated senescence *** uncovered that the role of MAVS in maintaining mitochondrial structural integrity and functional homeostasis depends on its interaction with the guanosine triphosphatase optic atrophy type 1(OPA1).Depletion of MAVS or OPA1 led to the dysfunction of mitochondria and cellular senescence,whereas replenishment of MAVS or OPA1 in MAVS-knockout hMSCs alleviated mitochondrial defects and premature senescence *** together,our data underscore an uncanonical role of MAVS in safeguarding mitochondrial homeostasis and antagonizing human stem cell senescence.

关键词： CRISPR/Cas9 homeostasis Mitochondrial

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A single-nucleus transcriptomic atlas of primate liver aging uncovers the pro-senescence role of SREBP2 in hepatocytes

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Protein & Cell 2024年第2期15卷 98-120页

作者： Shanshan Yang Chengyu Liu Mengmeng Jiang Xiaoqian Liu Lingling Geng Yiyuan Zhang Shuhui Sun Kang Wang jian Yin Shuai Ma Si Wang Juan Carlos Izpisua Belmonte Weiqi Zhang Jing Qu Guang-Hui Liu Advanced Innovation Center for Human Brain Protection and National Clinical Research Center for Geriatric Disorders Xuanwu Hospital Capital Medical UniversityBeijing 100053China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Aging Translational Medicine Center International Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijing 100053China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing 100101China Xuanwu Hospital Capital Medical University Beijing 100053China University of Chinese Academy of Sciences Beijing 100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Aging Biomarker Consortium Beijing 100101China Altos labs Inc.San DiegoCA 94022USA

Aging increases the risk ofliver diseases and systemic susceptibility to aging-related ***,cell type-specific changes and the underlying mechanism of liver aging in higher vertebrates remain incompletely ***,we constructed the first single-nucleus transcriptomic landscape of primate liver aging,in which we resolved cell type-specific gene expression fluctuation in hepatocytes across three liver zonations and detected aberrant cell-cell interactions between hepatocytes and niche *** in-depth dissection of this rich dataset,we identifed impaired lipid metabolism and upregulation of chronic inflammation-related genes prominently associated with declined liver functions during *** particular,hyperactivated sterol regulatory element-binding protein(SREBP)signaling was a hallmark of the aged liver,and consequently,forced activation of SREBP2 in human primary hepatocytes recapitulated in vivo aging phenotypes,manifesting as impaired detoxification and accelerated cellular *** study expands our knowledge of primate liver aging and informs the development of diagnostics and therapeutic interventions for liver aging and associated diseases.

关键词： single-nucleus RNA sequencing liver hepatocytes aging senescence SREBP2

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Single-cell profiling reveals a potent role of quercetin in promoting hair regeneration

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Protein & Cell 2023年第6期14卷 398-415页

作者： Qian Zhao Yandong Zheng Dongxin Zhao Liyun Zhao Lingling Geng Shuai Ma Yusheng Cai Chengyu Liu Yupeng Yan Juan Carlos Izpisua Belmonte Si Wang Weiqi Zhang Guang-Hui Liu Jing Qu Advanced Innovation Center for Human Brain Protection and National Clinical Research Center for Geriatric Disorders Xuanwu Hospital Capital Medical UniversityBeijing 100053China Aging Translational Medicine Center International Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuan Wu HospitalCapital Medical UniversityBeijing 100053China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciencesand China National Center for BioinformationBeijing 100101China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China The Fifth People's Hospital of Chongqing Chongqing 400062China Shanghai Institute of Materia Medica Chinese Academy of SciencesShanghai 201203China Altos labs Inc.San DiegoCA 94022USA

Hair loss affects millions of people at some time in their life,and safe and efficient treatments for hair loss are a significant unmet medical *** report that topical delivery of quercetin(Que)stimulates resting hair follicles to grow with rapid follicular keratinocyte proliferation and replenishes perifollicular microvasculature in *** construct dynamic single-cell transcriptome landscape over the course of hair regrowth and find that Que treatment stimulates the differentiation trajectory in the hair follicles and induces an angiogenic signature in dermal endothelial cells by activating HIF-1αin endothelial *** administration of a HIF-1αagonist partially recapitulates the pro-angiogenesis and hair-growing effects of ***,these findings provide a molecular understanding for the efficacy of Que in hair regrowth,which underscores the translational potential of targeting the hair follicle niche as a strategy for regenerative medicine,and suggest a route of pharmacological intervention that may promote hair regrowth.

关键词： single-cell RNA-sequencing Que hair follicle regeneration endothelial cells HIF-1α

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