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Research progress on electronic and active site engineering of cobalt‐based electrocatalysts for oxygen evolution reaction

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Carbon Energy 2024年第8期6卷 134-165页

作者： Chuansheng He linlin Yang Jia Wang Tingting Wang Jian Ju Yizhong Lu wei Chen School of Materials Science and Engineering University of JinanJinanChina Catalonia Energy Research Institute—IREC Sant Adriàde BesòsBarcelonaSpain Department of Electronic and Biomedical Engineering University of BarcelonaBarcelonaSpain Graduate School of Integrated Sciences for Life Hiroshima UniversityHigashi‐HiroshimaHiroshimaJapan Wenzhou Institute University of Chinese Academy of SciencesWenzhouChina Oujiang Lab WenzhouChina School of Chemistry and Pharmaceutical Science Guangxi Normal UniversityGuilinChina

Electrocatalytic water splitting has been identified as a potential candidate for producing clean hydrogen energy with zero carbon ***,the sluggish kinetics of oxygen evolution reaction on the anode side of the watersplitting device significantly hinders its practical ***,the efficiency of oxygen evolution processes depends greatly on the availability of cost‐effective catalysts with high activity and *** recent years,extensive theoretical and experimental studies have demonstrated that cobalt(Co)‐based nanomaterials,especially low‐dimensional Co‐based nanomaterials with a huge specific surface area and abundant unsaturated active sites,have emerged as versatile electrocatalysts for oxygen evolution reactions,and thus,great progress has been made in the rational design and synthesis of Co‐based nanomaterials for electrocatalytic oxygen evolution *** the remarkable progress in this area,in this timely review,we highlight the most recent developments in Co‐based nanomaterials relating to their dimensional control,defect regulation(conductivity),electronic structure regulation,and so ***,a brief conclusion about recent progress achieved in oxygen evolution on Co‐based nanomaterials,as well as an outlook on future research challenges,is given.

关键词： Co‐based nanomaterial dimension regulation electronic structure and active site oxygen evolution reaction

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Asymmetric time-varying integral barrier Lyapunov function based adaptive optimal control for nonlinear systems with dynamic state constraints

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Frontiers of Information Technology & Electronic Engineering 2024年第6期25卷 887-902页

作者： Yan wei Mingshuang HAO Xinyi YU linlin OU College of Information Engineering Zhejiang University of TechnologyHangzhou 310023China

This paper investigates the issue of adaptive optimal tracking control for nonlinear systems with dynamic state *** asymmetric time-varying integral barrier Lyapunov function(ATIBLF)based integral reinforcement learning(IRL)control algorithm with an actor–critic structure is first *** ATIBLF items are appropriately arranged in every step of the optimized backstepping control design to ensure that the dynamic full-state constraints are never ***,optimal virtual/actual control in every backstepping subsystem is decomposed with ATIBLF items and also with an adaptive optimized ***,neural networks are used to approximate the gradient value *** to the Lyapunov stability theorem,the boundedness of all signals of the closed-loop system is proved,and the proposed control scheme ensures that the system states are within predefined compact ***,the effectiveness of the proposed control approach is validated by simulations.

关键词： State constraints Asymmetric time-varying integral barrier Lyapunov function(ATIBLF) Adaptive optimal control Nonlinear systems

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Micelle-directed self-assembly of single-crystal-like mesoporous stoichiometric oxides for high-performance lithium storage

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National Science Review 2024年第4期11卷 195-205页

作者： Yanhua Wan Changyao Wang Xingmiao Zhang Yang Yin Mengmeng Liu Bing Ma linlin Duan Yuzhu Ma wei Zhang Changlin Zheng Dongliang Chao Fei Wang Yongyao Xia wei Li Department of Chemistry Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of Polymers College of Chemistry and Materials ScienceFudan University State Key Laboratory of Surface Physics and Department of Physics Fudan University

Due to their uncontrollable assembly and crystallization process,the synthesis of mesoporous metal oxide single crystals remains a formidable ***,we report the synthesis of single-crystal-like mesoporous Li2TiSiO5by using soft micelles as *** key lies in the atomic-scale self-assembly and step-crystallization processes,which ensure the formation of single-crystal-like mesoporous Li2TiSiO5microparticles via an oriented attachment growth mechanism under the confinement of an in-situ formed carbon *** mesoporous Li2TiSiO5anode achieves a superior rate capability(148 mAh g-1at5.0 A g-1) and outstanding long-term cycling stability(138 mAh g-1after 3000 cycles at 2.0 A g-1) for lithium storage as a result of the ultrafast Li+diffusion caused by penetrating mesochannels and nanosized crystal frameworks（5-10 nm）.In comparison,bulk Li2TiSiO5exhibits poor rate capability and cycle performance due to micron-scale diffusion *** method is very simple and reproducible,heralding a new way of designing and synthesizing mesoporous single crystals with controllable frameworks and chemical functionalities.

关键词： mesoporous materials micelles single-crystal-like Li2TiSiO5 lithium-ion batteries

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以面神经麻痹为首发症状的急性白血病患儿的临床分析

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国际输血及血液学杂志 2024年第1期47卷 46-53页

作者：胡婉迪苏淑芳李白徐甜甜马亚南徐岩魏林林刘玉峰郑州大学第一附属医院儿童医院血液肿瘤科郑州大学儿童血液肿瘤研究所郑州450052 中山大学孙逸仙纪念医院儿科广州510120

目的探讨以面神经麻痹为首发症状的急性白血病(AL)患儿的临床特征、治疗及预后。方法选择2016年8月至2021年8月郑州大学第一附属医院儿童血液肿瘤科收治的以面神经麻痹为首发症状的11例AL患儿为研究对象,其中男性患儿为8例,女性为3例。... 详细信息

目的探讨以面神经麻痹为首发症状的急性白血病(AL)患儿的临床特征、治疗及预后。方法选择2016年8月至2021年8月郑州大学第一附属医院儿童血液肿瘤科收治的以面神经麻痹为首发症状的11例AL患儿为研究对象,其中男性患儿为8例,女性为3例。采用回顾性研究方法,分析本组患儿的临床特征,包括一般临床资料、主要检查结果、治疗及预后情况等。采用Kaplan-Meier法绘制AL患儿的生存曲线。采用log-rank检验比较不同临床特征AL患儿的生存率。采用Cox比例风险回归模型,对可能影响AL患儿的预后因素进行多因素分析。本研究通过郑州大学第一附属医院医学伦理委员会审查批准(批准文号:2021-KY-0594)。结果①本组11例AL患儿中,急性淋巴细胞白血病(ALL)患儿为3例,急性髓细胞白血病(AML)为8例;首发症状均为面神经麻痹;发病至确诊中位时间为11.0 d(8.0,24.0 d);出现伴随症状者为10例,首诊科室系非血液科者为6例。②本组11例AL患儿的血常规和骨髓细胞形态学结果均显示异常,脑脊液细胞学检查、头颅磁共振成像(MRI)结果异常者分别为3、5例。急性T淋巴细胞白血病(T-ALL)、AML-M2、AML-M5患儿分别为3、7和1例。融合基因、基因突变、染色体核型检测结果阳性者分别为7、8和8例。③本组11例AL患儿中,既往应用糖皮质激素者为5例,化疗后达完全缓解(CR)者为10例,其中复发者为7例。④中位随访23.3个月(8.3,31.9个月)时,死亡患儿为8例。本组11例患儿的3年总体生存(OS)率为27.3%。多因素Cox比例风险回归模型分析结果显示,患儿既往应用糖皮质激素为以面神经麻痹为首发症状的AL患儿OS率的独立危险因素(HR=12.170,95%CI:1.373~107.847,P=0.025)。结论以面神经麻痹为首发症状的AL患儿早期临床症状不典型,发病至确诊间隔时间长,预后差。对于病因不明或治疗效果差的面神经麻痹患儿,需首先排除AL可能,并且在未确诊前应谨慎使用糖皮质激素。

关键词：面神经麻痹,面瘫白血病浸润白血病,髓样,急性中枢神经系统肿瘤预后儿童

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Effects of augmenting the migratory ability of mouse BMDC on immunotherapy

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Journal of Nanjing Medical University 2006年第3期20卷 133-140页

作者： Xun Zhu linlin Zhen wei Zheng Xuanyi Wang Zhengyan Wu Department of General Surgery First Affiliated Hospital of Nanjing Medical University Nanjing 210029 China

Objective： Being antigen-presenting cells, dendritic cells （DCs） transport captured antigen from peripheral tissues to T cell zone of lymph nodes via lymphatic vessels. This migration is essential for the presentation of antigen that leads to priming of effector T cell responses. In this study, we tried to promote the migratory ability of mouse bone marrow-derived dendritic cells （BMDCs） loaded with antigen of breast cancer, and its immunological effect in vivo. Methods： After being loaded with breast carcinoma antigen, BMDCs were cultured with medium containing PGE2, LTC4, or Bryo-1 respectively. Phenotypic changes, CCR7 expression, chemotaxis assay, mixed lymphocyte response, specific T lymphocyte cytotoxicity assay and anti-tumor immune efficacy of BMDCs were observed. Results ： PGF2 and LTC4 promoted maturation, CCR7 expression and migratory ability of BMDCs compared with control group in vitro. In vivo PGE2 and LTC4 group vaccines were more efficient on suppressing growth of mouse breast cancer than other groups. However Bryo-1 only enhanced BMDCs maturation. Conclusion： Because the effect of specific CTL in vitro had no difference, we suggested that migration of dendritic cells to lymph nodes maybe answered for the better anti-tumor immunological response induced by PGE2 or LTC4 in vivo.

关键词： dendritic cells breast carcinoma chemokines immunological therapy

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乐器、身体与文化认同——以安达组合演奏的冒顿潮尔为例

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音乐研究 2019年第1期 89-96页

作者：魏琳琳内蒙古艺术学院

音乐作为一种复杂的符号形式,有着自身固有的、多重的特征(诸如旋律、节奏、节拍、音色、音质和结构等),这些符号形式作为文化认同研究的基础和表征,为认同的多重性提供了音乐学层面的元素。当音乐作为一种表演、一种语境时,它似乎为表... 详细信息

音乐作为一种复杂的符号形式,有着自身固有的、多重的特征(诸如旋律、节奏、节拍、音色、音质和结构等),这些符号形式作为文化认同研究的基础和表征,为认同的多重性提供了音乐学层面的元素。当音乐作为一种表演、一种语境时,它似乎为表达不同语境中的多重认同,提供了丰富的舞台。①乐器作为一种器物,是音乐的象征性表达,是一种预期目的的物质实现,是人类活动中音乐普遍存在的证明。在对乐器的研究中,有一种尚未引起注意的现象,即研究乐器扩展人体产生声音的能力,以象征的方式与身体接触,通过乐器在不同文化中的使用方式,从而表征文化认同。

关键词：文化认同身体接触乐器演奏符号形式音乐学象征性表达多重认同

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Eco-friendly iron-catalyzed oxidation of unstrained tertiary aromatic alcohols to ketones

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Chinese Chemical Letters 2024年第1期35卷 250-253页

作者： Shanmei Zhu Penghui Hu Mengying Guo linlin Zhao linlin Yang wei-Jin Gu wei Han Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Biofunctional MaterialsKey Laboratory of Applied PhotochemistrySchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China

A general,facile and eco-friendly iron catalysis enables oxidation of unstrained tertiary aromatic alcohols to ketones through C-C bond cleavage even with H_(2)O_(2) as the ***,this transformation can tolerate oxidation-labile functional *** robustness of this method is further demonstrated on the late-stage oxidation of complex bioactive molecules.

关键词： Iron catalysis C-C bond cleavage Oxidation H_(2)O_(2) Late-stage functionalization

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音乐符号学

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民族艺术 2023年第2期 156-168页

作者：魏琳琳扬州大学

音乐符号学作为20世纪产生的一门新兴学科,对音乐人类学/民族音乐学、音乐美学、音乐心理学等学科都产生了重大影响,在过去三十年的发展中,逐步成为音乐学的一部分。与此同时,由于跨学科的属性,其专注于音乐话语的自主性和独创性。本文... 详细信息

音乐符号学作为20世纪产生的一门新兴学科,对音乐人类学/民族音乐学、音乐美学、音乐心理学等学科都产生了重大影响,在过去三十年的发展中,逐步成为音乐学的一部分。与此同时,由于跨学科的属性,其专注于音乐话语的自主性和独创性。本文从音乐符号学的海外研究、音乐符号学的中国实践等方面着手进行文献综述,通过对现有研究成果的梳理,进而讨论符号学理论在不同语境中的作用。尝试挖掘“符号学内核”概念背后的真正价值,并与今天所讨论的“地方性”“跨文化”“多元性”“跨学科”相结合,探究音乐符号学与不同文化语境之间密不可分的互文性表达,以及相互之间的涵化现象,以此构建中国本土音乐理论的符号学框架。

关键词：音乐符号学语言符号学文化语境跨学科互文性

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Altered synaptic currents,mitophagy,mitochondrial dynamics in Alzheimer's disease models and therapeutic potential of Dengzhan Shengmai capsules intervention

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Journal of Pharmaceutical Analysis 2024年第3期14卷 348-370页

作者： Binbin Zhao Dongfeng wei Qinghua Long Qingjie Chen Fushun Wang linlin Chen Zefei Li Tong Li Tao Ma wei Liu Linshuang Wang Caishui Yang Xiaxia Zhang Ping Wang Zhanjun Zhang State Key Laboratory of Cognitive Neuroscience and Learning&IDG/McGovern Institute for Brain Research Beijing Normal UniversityBeijing100875China Institute of Gerontology Hubei University of Chinese MedicineWuhan430065China Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing100700China Medical School Hubei Minzu UniversityEnshiHubei445000China HuBei University of Science and Technology XianningHubei437100China Institute of Brain and Psychological Science Sichuan Normal UniversityChengdu610066China Key Laboratory of Traditional Chinese Medicine Resource and Compound Prescription Ministry of EducationHubei University of Chinese MedicineWuhan430065China Dongfang Hospital Beijing University of Chinese MedicineBeijing100078China Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases Experimental Research CenterChina Academy of Chinese Medical SciencesBeijing100700China School of Systems Science Beijing Normal UniversityBeijing100875China BABRI Centre Beijing Normal UniversityBeijing100875China

Emerging research suggests a potential association of progression of Alzheimer's disease(AD)with alterations in synaptic currents and mitochondrial ***,the specific associations between these pathological changes remain *** this study,we utilized Aβ42-induced AD rats and primary neural cells as in vivo and in vitro *** investigations included behavioural tests,brain magnetic resonance imaging(MRI),liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)analysis,Nissl staining,thioflavin-S staining,enzyme-linked immunosorbent assay,Golgi-Cox staining,transmission electron microscopy(TEM),immunofluorescence staining,proteomics,adenosine triphosphate(ATP)detection,mitochondrial membrane potential(MMP)and reactive oxygen species(ROS)assessment,mitochondrial morphology analysis,electrophysiological studies,Western blotting,and molecular *** results revealed changes in synaptic currents,mitophagy,and mitochondrial dynamics in the AD ***,intervention with Dengzhan Shengmai(DZSM)capsules emerged as a pivotal element in this investigation.Aβ42-induced synaptic dysfunction was significantly mitigated by DZSM intervention,which notably amplified the frequency and amplitude of synaptic *** cognitive impairment observed in AD rats was ameliorated and accompanied by robust protection against structural damage in key brain regions,including the hippocampal CA3,primary cingular cortex,prelimbic system,and dysgranular insular *** intervention led to increased IDE levels,augmented long-term potential(LTP)amplitude,and enhanced dendritic spine density and ***,DZSM intervention led to favourable changes in mitochondrial parameters,including ROS expression,MMP and ATP contents,and mitochondrial *** conclusion,our findings delved into the realm of altered synaptic currents,mitophagy,and mitochondrial dynamics in AD,concurrently highlighting the therapeutic potential of DZSM intervention.

关键词： Alzheimer's disease Synaptic currents Mitophagy Mitochondrial fusion and fission Dengzhan Shengmai capsules

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Ten ring-B aromatized ergosterols from Aspergillus spectabilis

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Chinese Journal of Natural Medicines 2024年第7期22卷 654-662页

作者： wei Mengsha SUN weiguang LIU linlin LI Yongqi LI Lanqin LI Qin CHEN Yu GUO Jieru GU Lianghu ZHU Hucheng CHEN Chunmei ZHANG Yonghui Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and TechnologyWuhan 430030China

Spectasterols F−O(1−10),ten interesting ergosterols with an aromatized B ring,were obtained from Aspergillus *** structures and absolute configurations were determined using a combination of high-resolution electrospray ionization mass spectrometry(HR-ESI-MS),nuclear magnetic resonance(NMR)spectroscopy,single-crystal X-ray diffraction analyses,and electronic circular dichroism(ECD)***,these aromatic ergosterols feature versatile side ***,compound aromatic ergosterols featured versatile side chains,and compound 4 is an unusual C23 ergosterol characterized by a shorter side chain due to oxidative cleavage between C-23 and *** compounds were evaluated for their neuroprotective activities,with compound 8 showing a dose-dependent ability to reduce apoptosis and protect mitochondrial function in glutamate-induced SH-SY5Y cells.

关键词： Steroids Aspergillus spectabilis Aromatic ergosterols Neuroprotective activities Structure elucidation

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