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Reducing Subspaces of Toeplitz Operators Induced by a Class of Non-analytic Monomials over the Unit Ball

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1767-1777页

作者： Yan yue shi Bo ZHANG Xu TANG Yu Feng LU School of Mathematical Sciences Ocean University of ChinaQingdao 266100P.R.China School of Mathematics and Information Sciences Yantai UniversityYantai 264005P.R.China School of Mathematical Sciences Space Engineering UniversityBeijing 101416P.R.China School of Mathematical Sciences Dalian University of TechnologyDalian 116024P.R.China

In this paper,we describe the minimal reducing subspaces of Toeplitz operators induced by non-analytic monomials on the weighted Bergman spaces and Dirichlet spaces over the unit ball B_(2).It is proved that each minimal reducing subspace M is finite dimensional,and if dim M≥3,then M is induced by a ***,the structure of commutant algebra v(T_(w)N_(z)N):={M^(*)_(w)NM_(z)N,M^(*)_(z)NM_(w)N}′is determined by N and the two dimensional minimal reducing subspaces of(T_(w)N_(z)*** also give some interesting examples.

关键词： Reducing subspace operator-weighted shifts Toeplitz operator von Neumann algebra

Investigation of stress distribution and damage behavior caused by forced installation of a composite bolted joint with a hole-location error

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Chinese Journal of Aeronautics 2024年第1期37卷 201-217页

作者： Chinan LIU Yuan LI Yi CHENG An’an ZHAO Kunpeng DU yue shi Ximing LI Hui CHENG School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China AVIC Xi’an Aircraft Industry Group Company LTD Xi’an 710089China

In this paper,the influence of forced installation caused by a hole-location error on the 3D stress distribution and damage of a composite bolted joint is *** analytical model of stress distributed on composite holes is promoted,in view of non-uniform extrusion caused by forced *** first,non-uniform extrusion of the hole edge caused by forced installation is *** to the contact state,expression of hole deformation is ***,based on Hertz theory,the maximum extrusion load is obtained with help of deformation *** constructing an elastic foundation beam model,3D stress distributed on a hole could be analyzed according to the extrusion ***,stress distribution predicted by the above analytical method is compared with that provided by FE considering composite ***,a forced installation experiment is carried out to analyze the damage distribution of the *** show that a central-symmetrically distributed stress is introduced by the hole-location *** an increment of the error,strength of composite decreases due to extrusion ***,stress presents a concave distribution on the *** the hole-location error exceeding 3%,stress decreases gradually due to failure of *** of holes does not exhibit a centrosymmetric *** damage is mainly distributed on the entrance of the hole at the lower sheet.

关键词： Hole-location error Composite joint Forced installation Stress distribution Damage

Chemical Composition, Pharmacological Effects and Clinical Applications of Cinobufacini

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Chinese Journal of Integrative Medicine 2024年第4期30卷 366-378页

作者： ZUO Qian XU Ding-qiao yue shi-jun FU Rui-jia TANG Yu-ping Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility Shaanxi University of Chinese MedicineXi'an(712046)China

Chinese medicine cinobufacini is an extract from the dried skin of Bufo bufo gargarizans Cantor,with active ingredients of bufadienolides and indole *** further research and clinical applications,it is found that cinobufacini alone or in combination with other therapeutic methods can play an anti-tumor role by controlling proliferation of tumor cells,promoting apoptosis,inhibiting formation of tumor neovascularization,reversing multidrug resistance,and regulating immune response;it also has the functions of relieving cancer pain and regulating immune *** this paper,the chemical composition,pharmacological effects,clinical applications,and adverse reactions of cinobufacini are ***,the extraction of monomer components of cinobufacini,the relationship between different mechanisms,and the causes of adverse reactions need to be further ***,high-quality clinical studies should be conducted.

关键词： cinobufacini chemical composition Chinese medicine pharmacological effect clinical application adverse effect

Regulate electric double layer for one-step synthesize and modulate the morphology of(oxy)hydroxides

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Nano Research 2024年第5期17卷 3675-3683页

作者： Jiaxin Liu yue shi Yanli Gu Zheng Lv Liang Zhao Yu Yang Tianrong Zhan Jianping Lai Lei Wang State Key Laboratory Base of Eco-Chemical Engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

FeOOH have received considerable attention due to their natural abundance and *** the significant progress achieved,the one-step synthesis of integrated FeOOH is still a major ***,the current research on FeOOH catalyst still suffers from the unclear mechanism of controlling ***,density functional theory(DFT)calculations and X-ray photoelectron spectroscopy(XPS)demonstrated the strong electron-capturing and hydrogen absorption ability of Co in FeOOH,which further promotes the formation and stabilization of *** used a one-step electrodeposition method to synthesize Co introduced FeOOH integrated electrocatalyst and propose to introduce ions with different valence states to regulate the morphology of FeOOH by precise modulation of electric double layer(EDL)composition and *** prepared Co-FeOOH-K^(+)has a larger electrochemically active surface area(ECSA)(325 cm^(2))and turnover frequency(TOF)value(0.75 s^(-1)).In the electrochemical experiments of an alkaline anion exchange membrane electrolyzer,Co-FeOOH-K^(+)shows better oxygen evolution performance than commercial RuO_(2) under industrial production conditions and has good industrial application prospects.

关键词： integrated(oxy)hydroxides electrodeposition electric double layer(EDL) oxygen evolution reaction(OER) morphology regulation

Narrating the Universality of Community for the Chinese Nation: A Review of Su Li's The Constitution of China

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Journal of the Chinese Nation Studies 2024年第1期3卷 165-176页

作者： yue shi Peking University BeijingChina

In The Constitution of China,Su Li proposes the perspective of the constitution as a system(xian zhi),and offers a three-layer frame of"Jia-Guo-Tianxia"to interpret historical China's constitutional *** article points out that Su Li presents his academic ambition of narrating the universality of Chinese nation,and proposes a dynamic view of institution based on China's historical ***,Su Li's work is an important reference for the academic discipline of the Chinese Nation Studies.

关键词： Chinese Nation Community Constitution

Respiratory Viruses and Mycoplasma Pneumoniae Surveillance Among Hospitalized Children with Acute Respiratory Infections—Wuhan City,Hubei Province,China,September-November 2023

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China CDC weekly 2024年第8期6卷 139-142页

作者： Ying Li Yi Yan Jiaming Huang yue shi Hui Du Chao Xiong Kai Chen Di Liu Xiaoxia Lu Computational Virology Group Center for Bacteria and Viruses Resources and BioinformationWuhan Institute of VirologyChinese Academy of SciencesWuhan CityHubei ProvinceChina Department of Respiratory Medicine Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina Pediatric Respiratory Disease Laboratory Institute of Maternal and Child HealthWuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina University of Chinese Academy of Sciences BeijingChina CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan CityHubei ProvinceChina Data Center Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina

Summary What is already known about this topic?Acute respiratory infections(ARIs)are a significant contributor to illness and death in *** has been a notable rise in the occurrence of ARIs and the associated pathogens in China,which has garnered worldwide *** is added by this report?This study conducted a retrospective analysis of the clinical characteristics of children with ARIs in Wuhan City from September to November 2023.

关键词： November Wuhan Hubei

A dialogue between gut microbiota and network pharmacology

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Medical Data Mining 2024年第4期7卷 56-57页

作者： shi-Jun yue International Joint Research Center on Resource Utilization and Quality Evaluation of Traditional Chinese Medicine of Hebei Province Hebei University of Chinese MedicineShijiazhuang 050200China

The gastrointestinal system of the human body is home for a large number and rich variety of microbes,including bacteria,viruses,fungi and protozoa,which are collectively known as the gut microbiota(the largest and most intricate“organ”within the body).Till now,the groundbreaking research has emerged elucidating the pivotal role of the gut microbiota in human health and *** normal gut microbiota,after long evolution with the host,has formed an interdependent and mutually limited homeostasis system,which can produce beneficial metabolites for preserving intestinal integrity and preventing the onset of leaky gut syndrome along with subsequent immune activation and *** the number of gut microbial metabolites is not fully understood,several metabolites(e.g.,short-chain fatty acids and branched-chain amino acids)have been tested to determine positive or negative effects on the development of specific diseases,which may be a new direction for the prevention and treatment of diseases.

关键词： prevention collective breaking

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德国科学学与高等教育研究的跨学科协同发展

清华大学教育研究 2024年第1期45卷 90-98页

作者：王世岳南京大学教育研究院南京210036

最近二十年,德国政府和第三方科研资助机构通过设立科研实体、课题委托和建立数据库等方式,有意识地构建高等教育研究和科学学协同发展的跨学科学术共同体。两个遵循不同研究范式的学科在研究对象和研究方法上不断通约,为协同发展奠定... 详细信息

最近二十年,德国政府和第三方科研资助机构通过设立科研实体、课题委托和建立数据库等方式,有意识地构建高等教育研究和科学学协同发展的跨学科学术共同体。两个遵循不同研究范式的学科在研究对象和研究方法上不断通约,为协同发展奠定了基础。在此过程中,两个学科一直在寻求学术性和应用性的统一,反映出德国科学研究系统和高等教育系统的不断融合。

关键词：德国科学学高等教育研究学术共同体有组织科研

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在劳动中“民心相通”

文化纵横 2024年第4期 116-124,M0004页

作者：施越北京大学东方文学研究中心北京大学外国语学院

2013年9月访问哈萨克斯坦期间,习近平主席提出了“五通”的概念。其中,“民心相通”被明确表述为“为开展区域合作奠定坚实民意基础和社会基础”。[1]在此后十余年的政策实践中,民心相通往往被理解为文化交流、学术往来、人才流动、媒... 详细信息

2013年9月访问哈萨克斯坦期间,习近平主席提出了“五通”的概念。其中,“民心相通”被明确表述为“为开展区域合作奠定坚实民意基础和社会基础”。[1]在此后十余年的政策实践中,民心相通往往被理解为文化交流、学术往来、人才流动、媒体合作、青年和妇女交往、志愿者服务等相关领域的工作;以企业为主体的商贸活动,则被纳入设施、资金、贸易的“三通”之中。

关键词：中资企业属地化经营 “一带一路”