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Area Operators on Bergman Spaces

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Acta Mathematica Sinica,English Series 2024年第5期40卷 1161-1176页

作者： Xiao Fen LV Jordi PAU Mao fa WANG Department of Mathematics Huzhou UniversityHuzhou 313000P.R.China Departament de Matemàtiques i Informàtica Universitat de Barcelona08007 BarcelonaCataloniaSpain School of Mathematics and Statistics Wuhan UniversityWuhan 430072P.R.China

We completely characterize the boundedness of area operators from the Bergman spaces A_(α)^(p)(Bn)to the Lebesgue spaces L^(q)(S_(n))for all 0 详细信息

We completely characterize the boundedness of area operators from the Bergman spaces A_(α)^(p)(Bn)to the Lebesgue spaces L^(q)(S_(n))for all 0z.:Volterra operator,area integral and Carleson measures,*** Math.,54,2487–2500(2011)].Especially,in the case qzations for the area operators to be *** solve the cases left open there and extend the results to n-complex dimension.

关键词： Area operator Bergman space tent space area formula

Forecast of cosmological constraints with superluminous supernovae from the Chinese Space Station Telescope

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Science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 128-138页

作者： Xuan-Dong Jia Jian-Ping Hu fa-Yin Wang zi-Gao Dai School of Astronomy and Space Science Nanjing UniversityNanjing 210093China Key Laboratory of Modern Astronomy and Astrophysics(Nanjing University) Ministry of EducationNanjing 210093China Department of Astronomy University of Science and Technology of ChinaHefei 230026China

Superluminous supernovae(SLSNe)are a class of intense celestial events that can be standardized for measuring cosmological parameters,bridging the gap between type Ia supernovae and the cosmic microwave *** this work,we discuss the cosmological applications of SLSNe from the Chinese Space Station Telescope(CSST).Our estimation suggests that SLSNe rate is biased tracing the cosmic star formation rate,exhibiting a factor of(1+z)^(1.2).We futher predict that CSST is poised to observe~360 SLSNe in the 10 square degrees ultra-deep field survey within a span of 2.5 years.A stringent constraint on cosmological parameters can be derived from their peak-color *** is anticipated to uncover a substantial number of SLSNe,contributing to a deeper understanding of their central engines and shedding light on the nature of dark energy at high redshifts.

关键词： supernovae cosmology cosmological constant

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Magnetism and Superconductivity in the t–J Model of La_(3)Ni_(2)O_7 Under Multiband Gutzwiller Approximation

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Chinese Physics Letters 2024年第5期41卷 97-106页

作者：薛洁然王垡 International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China

The recent discovery of possible high temperature superconductivity in single crystals of La_(3)Ni_(2)O_(7) under pressure renews the interest in research on *** density functional theory calculations reveal that both d_(z^(2)) and d_(x^(2)-y^(2)) orbitals are active,which suggests a minimal two-orbital model to capture the low-energy physics of this *** this work,we study a bilayer two-orbital t–J model within multiband Gutzwiller approximation,and discuss the magnetism as well as the superconductivity over a wide range of the hole *** to the inter-orbital super-exchange process between d_(z^(2)) and d_(x^(2)-y^(2)) orbitals,the induced ferromagnetic coupling within layers competes with the conventional antiferromagnetic coupling,and leads to complicated hole doping dependence for the magnetic properties in the *** increasing hole doping,the system transfers to A-type antiferromagnetic state from the starting G-type antiferromagnetic(G-AFM)*** also find the inter-layer superconducting pairing of d_(x^(2)-y^(2)) orbitals dominates due to the large hopping parameter ofd_(z^(2)) along the vertical inter-layer bonds and significant Hund’s coupling between d_(z^(2)) and d_(x^(2)-y^(2)) ***,the G-AFM state and superconductivity state can coexist in the low hole doping *** take account of the pressure,we also analyze the impacts of inter-layer hopping amplitude on the system properties.

关键词： properties doping orbital

Y–z deformable magnetic ring for the treatment of rectal stricture: A case report and review of literature

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World Journal of Gastroenterology 2024年第6期30卷 599-606页

作者： Miao-Miao zhang Huan-Chen Sha Yuan-fa Qin Yi Lyu Xiao-Peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUND Treatment of postoperative anastomotic stenosis for colorectal cancer is often challenging,especially for patients who do not respond well to *** cases where patients have undergone an enterostomy,the stenosis can be easily resolved through magnetic ***,common magnetic compre-ssion techniques cannot be performed on those without *** design-ed a novel Y–z deformable magnetic ring(Y–z DMR)and successfully applied it to a patient with a stenosis rectal anastomosis and without enterostomy after rectal cancer *** SUMMARY We here report the case of a 57-year-old woman who had undergone a laparo-scopic radical rectum resection(Dixon)for rectal ***,she started facing difficulty in defecation 6 months after *** colonoscopy indicated stenosis of the rectal *** balloon dilation was performed six times on ***,the stenosis still showed a trend of gradual *** the patient did not undergo an enterostomy,the conventional endoscopic magnetic compression technique could not be ***,we imple-mented a Y–z DMR implemented through the anus under single *** magnetic ring fell off nine days after the operation and the rectal stenosis was *** patient was followed up for six months and reported good *** The Y–z DMR deformable magnetic ring is an excellent treatment strategy for patients with rectal stenosis and without enterostomy.

关键词： Anastomotic stenosis Colorectal cancer Magnetosurgery Magnetic compression technique Magnetic surgery clinic Case report

Multiscale control of MnO_(2) growth via[WO_(6)]-perturbed[MnO_(6)]assembly toward a favorable balance between capacitance and rate performance

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Rare Metals 2024年第4期43卷 1658-1671页

作者： Jin-Kang Liu Tian-Shuo Yang zhi-Bin Ren Adekunle-Adedapo Obisanya Xin-Yi Tan Yan-Di Rao Jun-Shuang zhou fa-Ming Gao Jian-Ren Wang Hebei Key Laboratory of Applied Chemistry Yanshan UniversityQinhuangdao066004China

Although pseudocapacitive manganese dioxide(MnO_(2))integrates the high-power merit of carbonaceous materials with the high-energy merit of battery-type materials,it still has a long way to go in achieving a more satisfactory balance of higher energy and power density,and in decoupling the relationship of structural characteristics with energy storage *** realize such goals,a bottom-up[WO_(6)]-perturbed[MnO_(6)]assembly strategy has been developed here due to their similar structure,yet mismatched lattice *** facile protocol is capable of finely controlling the morphology and crystal structure of MnO_(2)by adjusting its internal[WO_(6)]***,the as-prepared W_xMnO_(2)is treated as an ideal platform to scrutinize the correlations of the structure with the energy storage *** operando Raman spectra and finite element analysis have fully demonstrated the superiority of the locally ordered defects-enriched structure of W_(0.02)-MnO_(2),which could reach a favorable balance between the ion diffusion equilibrium time and the number of active *** a result,the W_(0.02)-MnO_(2)is able to deliver a high capacitance of 292 F·g^(-1)at a current density of 1 A·g^(-1)and a remarkable rate performance with a 60%capacity retention at a current density of 50 A·g^(-1).The further unveiled structure-performance relationship provides a guideline for the design of better pseudocapacitive energy storage devices.

关键词： Supercapacitors Pseudocapacitive materials MnO_(2) Tungsten doping Crystal structure regulation

Heavy neutral leptons in gauged U(1)Lμ-Lτ at muon collider

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Chinese Physics C 2024年第9期48卷 36-49页

作者： Ru-Yi He Jia-Qi Huang Jin-Yuan Xu fa-Xin Yang zhi-Long Han Feng-Lan Shao School of Physics and Technology University of JinanJinan 250022China School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China

Heavy neutral leptons N are the most appealing candidates to generate tiny neutrino *** studied the signature of heavy neutral leptons in gauged U(1)Lμ-Lτ at a muon *** under the U(1)Lμ-Lτ symmetry,the heavy neutral leptons can be pair produced via the new gauge boson z' at the muon collider as μ^(+)μ^(-)→z′*→NN AND μ^(+)μ^(-)→z′(*)γ→NNγ.We then performed a detailed analysis on the lepton number violation signature μ^(+)μ^(-)→NN→μ^(±)μ^(±)W■W■ and μ^(+)μ^(-)→NN→μ^(±)μ^(±)W■W■γ at the 3 TeV muon collider,where the hadronic decays of W boson are treated as fat-jets *** lepton number violation signatures have quite clean backgrounds at the muon *** simulation shows that a wide range of viable parameter space is within the reach of the 3 TeV muon *** instance,with new gauge coupling g'=0.6 and an integrated luminosity of 1000 fb^(-1),the μ^(±)μ^(±)JJ signal could probe m_(z′)■13 ***,if the gauge boson mass satisfies 2m_(N)<√s,the μ^(±)μ^(±)JJγ signature would be more promising than the μ^(±)μ^(±)JJ signature.

关键词： heavy neutral leptons gauged U(1)_(Lμ-Lτ) muon collider lepton number violation

Restraining growth of zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes

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Rare Metals 2024年第8期43卷 3735-3747页

作者： Xiang-Xin zhang Yuan-Qiang Chen Chang-Xin Lin Yuan-Sheng Lin Guo-Lin Hu Yong-Chuan Liu Xi-Lai Xue Su-Jing Chen zhan-Lin Yang Bai-Sheng sa Yi-Ning zhang Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Helmholtz Institute Ulm(HIU) 89081 UlmGermany Karlsruhe Institute of Technology(KIT) 76021 KarlsruheGermany College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China

Metallic zinc is an excellent anode material for zn-ion batteries,but the growth of zn dendrite severely hinders its practical ***,an efficient and economical cationic additive,poly dimethyl diallyl ammonium(PDDA) was reported,used in aqueous zn-ion batteries electrolyte for stabilizing zn *** growth of zinc dendrites can be significantly restrained by benefiting from the pronounced electrostatic shielding effect from PDDA on the zn metal ***,the PDDA is preferentially absorbed on zn(002) plane,thus preventing unwanted side reactions on zn *** to the introduction of a certain amount of PDDA additive into the common znSO_(4)-based electrolyte,the cycle life of assembled zn‖zn cells(1 mA·cm^(-2) and 1 mAh·cm^(-2)) is prolonged to more than 1100 *** response to the perforation issue of zn electrodes caused by PDDA additives,the problem can be solved by combining foamy copper with zinc *** real application,zn-ion hybrid supercapacitors and MnO_(2)‖zn cells were assembled,which exhibited excellent cycling stability with PDDA *** work provides a new solution and perspective to cope with the dendrite growth problem of zn anode.

关键词： PDDA Electrostatic shielding effect zn anode zn dendrites

海上丝路与中国天文历法在日本的传播及影响研究

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自然辩证法通讯 2024年第4期46卷 57-65页

作者：萨日娜上海交通大学科学史与科学文化研究院上海200240

经过海上丝路有大量汉文科学典籍传入日本并产生了重要的影响,天文历法知识是其中重要的一个方面。文中通过史料调查和实证考察,探索了魏晋南北朝时期,中国天文知识传日背景;研究隋唐时期,随着海上丝路的发展,日本留学生(僧)把中国天文... 详细信息

经过海上丝路有大量汉文科学典籍传入日本并产生了重要的影响,天文历法知识是其中重要的一个方面。文中通过史料调查和实证考察,探索了魏晋南北朝时期,中国天文知识传日背景;研究隋唐时期,随着海上丝路的发展,日本留学生(僧)把中国天文知识传至日本的详情,尤其考察了唐历《宣明历》在日本使用八百多年之久的缘由;继而分析了宋元明时期,中国传统天文历法持续传日,并对其传统学术建构产生的深远影响。结论认为研究中日传统天文历法的关联性,不仅有助于认识海上丝路文明对日本传统科技的影响,对提升中华传统文化的国际传播力和影响力也有一定的借鉴意义。

关键词：海上丝路天文历法传统科技中日交流

科技自立自强的历史逻辑、理论内涵与实现路径

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科学管理研究 2024年第1期42卷 2-10页

作者：宋河发刘安琪中国科学院科技战略咨询研究院北京100190 中国科学院大学公共政策与管理学院(知识产权学院) 北京100149

科技自立自强是我国科技事业进入新发展阶段的新目标。纵观我国科技发展史,党的全面领导是实现科技自立自强的根本保证,独立自主和对外开放相统一是基本原则,提升自主创新能力是制度主线,强化国家战略科技力量是客观要求。科技自立自强... 详细信息

科技自立自强是我国科技事业进入新发展阶段的新目标。纵观我国科技发展史,党的全面领导是实现科技自立自强的根本保证,独立自主和对外开放相统一是基本原则,提升自主创新能力是制度主线,强化国家战略科技力量是客观要求。科技自立自强与自力更生和自主创新一脉相承,科技自立自强是指我国能够依靠自身力量创造出适合发展需要的足够数量的高水平科技成果和知识产权,这些科技成果和知识产权能够有效支撑我国产业创新和经济社会发展,强调通过自主研发、自主生产和自主应用来减少对外部科技资源的依赖,从根本上提高自主创新能力和综合国力。为实现科技自立自强,必须坚持党的全面领导,持续深化科技体制改革,进一步完善科技创新政策体系、知识产权严格保护制度、科技创新生态体系和科技评价考核制度,建设科研兴趣导向的高水平科技人才队伍。

关键词：科技自立自强历史逻辑理论内涵实现路径