检索结果-南通市图书馆

Difference of Composition Operators on Some Analytic Function Spaces

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2021年第9期37卷 1384-1400页

作者： Jun Mei fan Yu Feng LU yi Xin yang School of Mathematical Sciences Dalian University of TechnologyDalian 116024P.R.China

For two analytic self-mapsφandψdefined on the unit disk D,we characterize completely the boundedness and compactness of the difference Cφ-Cψof the composition operators Cφand Cψfrom Bloch space B into Besov space Bν∞.Moreover,we also give a complete characterization of the compactness of the difference Cφ-Cψon BMOA space.

关键词： Composition operators difference Bloch space Besov space BMOA

The gamma-ray Doppler factor determinations for a Fermi blazar sample

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2013年第3期13卷 259-269页

作者： Jun-Hui fan Jiang-He yang yi Liu Jing-yi Zhang Center for Astrophysics Guangzhou University Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province Department of Physics and Electronics Science Hunan University of Arts and Science

Observations suggest that γ-ray loud blazars are strongly beamed. The Fermi mission has detected many of blazars, which provide us with a good opportunity to investigate the emission mechanism and the beaming effect in the γ-ray region. We compiled the X-ray observations for 138 Fermi blazars （54 flat spectrum radio quasars, 36 low-peaked BL Lacertae objects, and 48 high-peaked BL Lacertae objects） and calculated their Doppler factors, δγ. It is interesting that the calculated Doppler factors, δγ, are strongly correlated with the γ-ray luminosity.

关键词： galaxies: active -- galaxies: BL Lacertae objects -- galaxies: quasars --galaxies: jets

Phase Patterning of Poly(oxime-ester)for Information Encryption by Photo-induced Isomerization

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第10期42卷 1488-1494,I0010页

作者： Yu-fan yang Yun Bai yi-Bao Li Chang-Fei He School of Chemistry and Chemical Engineering Gannan Normal UniversityGanzhou341000China

Crystal polymers or liquid crystal elastomers undergo a phase transition that results in a change in the corresponding optical properties,which has the potential to be applied in areas such as information encryption and *** utilization of these materials for patterning purposes requires different phase transition ***,once prepared,altering the phase transition temperature of them presents significant ***,a poly(oxime-ester)(POE)network is developed to achieve high-resolution and multilevel patterning by photo-induced *** as-prepared POE exhibits the ability to transition from an opaque state to a transparent state under temperature stimuli,with the transition temperature and kinetics dependent on UV light exposure ***,complex patterns and information can be encrypted through different selective regional exposure time and decrypted under specific temperature or cooling ***,we illustrate an example of temporal communication,where cooling time or temperature serves as the encoded *** research expands the application scope of advanced encryption materials,showcasing the potential of POE in dynamic information encryption and decryption processes.

关键词： Poly(oxime-ester) Isomerization Phase patterning Information encryption

Conceptualizing the complexity of ferroptosis to treat triple-negative breast cancer:theory-to-practice

在线全文

学校读者我要写书评

暂无评论

Cancer Biology & Medicine 2023年第2期20卷 98-103页

作者： Hang Zhang fan yang yi Xiao yi-Zhou Jiang Zhi-Ming Shao Key Laboratory of Breast Cancer in Shanghai Department of Breast SurgeryFudan University Shanghai Cancer Center、Department of OncologyShanghai Medical CollegeFudan UniversityShanghai 200032China

Ferroptosis,a type of regulated cell death named one decade ago,is a unique type driven by lipid peroxidation in an iron-dependent *** differs radically from apoptosis and other regulated forms of cell death in both morphology and molecular *** can be triggered by a variety of physiologic conditions and pathologic *** has been growing interest in ferroptosis in recent years,and research on ferroptosis is productive.

关键词： peroxidation death breast

Adsorption of Ag on M-doped graphene:First principle calculations

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 487-494页

作者： Min Hu Zhou fan Jian-yi Liu Kun Zhang yang Wang Chun-feng yang School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering Southwest Petroleum UniversityChengdu 610500China Journal Center Southwest Petroleum UniversityChengdu 610500China

Graphene is an ideal reinforcing phase for a high-performance composite filler,which is of great theoretical and practical significance for improving the wettability and reliability of the ***,the poor adsorption characteristics between graphene and the silver base filler significantly affect the application of graphene filler in the brazing *** is a great challenge to improve the adsorption characteristics between a graphene and silver base *** solve this issue,the adsorption characteristic between graphene and silver was studied with first principle *** effects of Ga,Mo,and W on the adsorption properties of graphene were *** are three possible adsorbed sites,the hollow site(H),the bridge site(B),and the top site(T).Based on this research,the top site is the most preferentially adsorbed site for Ag atoms,and there is a strong interaction between graphene and Ag *** element doping enhances local hybridization between C or metal atoms and ***,compared with other doped structures(Ga and Mo),W atom doping is the most stable adsorption structure and can also improve effective adsorption characteristic performance between graphene and Ag.

关键词： graphene filler first principle calculations adsorption characteristic

New Operator Identities and Combinatorics Studied by Virtue of IWOP Technique

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2006年第1期45卷 49-54页

作者： fan Hong-yi OU-yang Jing JIANG Zhong-Hua Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Special Class for Gifted Young University of Science and Technology of China Hefei 230026 China

Using the coherent state representation we derive some new operator identities and study some mathematical relations in comblnatorics. The technique of integral within an ordered product （IWOP） of operators plays an... 详细信息

关键词： IWOP technique combinatorics operator identities

Enhancement of β-Phase Crystal Content of Poly(vinylidene fluoride)Nanofiber Web by Graphene and Electrospinning Parameters

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2020年第11期38卷 1239-1247,I0008页

作者： Lu Jin Yan Zheng Ze-Kun Liu Jia-Shen Li yang-Pei-Qi yi yang-yang fan Lu-Lu Xu yi Li Department of Materials School of Natural SciencesThe University of ManchesterManchester Ml 39PLU.K. School of Fashion Zhongyuan University of TechnologyZhengzhou 450007China

Electrospun poly(vinylidene fluoride)(PVDF)nanofiber web has been widely utilized as a functional material in various flexible sensors and generators due to its high piezoelectricity,ease processability,and low *** all the crystalline phases of PVDF,β-phase is a key property for PVDF nano fiber web,because the con tent of β-phase is directly proporti onal to piezoelectric performa nee of PVDF nano fiber ***,the impact of graphe ne con tent(GC),tip-to-collector dista nee(TCD),and rotational speed of collector(RSC),as well as their interactions on theβ-phase formation of PVDF nano fiber web is systematically investigated via design of experime ntal *** fraction of each crystalline phase of PVDF nano fiber web is calculated by FTIR spectra,and the crystallinity is determined by XRD *** influences of GC,TCD,and RSC on both β-phase fraction and crystallinity of PVDF nanofiber are analyzed using Minitab *** results show that GC,TCD,and RSC all have significa nt effect on the β-phase content of PVDF nano fiber web,and GC is the most significant *** addition,an optimal electrospinning condition(GC=1 wt%,TCD=4 cm,and RSC=2000 r·min^-1)to fabricate high 0-phase crystallinity of PVDF nanofiber web is drawn,under which the crystallinity can reach 41.7%.The contributions in this study could provide guidanee for future research on fabricating high performance PVDF nanofiber web based sensors or generators.

关键词： Graphene Electrospinning Poly(vinylidene fluoride) Design of experiment βCrystal phase

Highly flexible and compressible polyimide/silica aerogels with integrated double network for thermal insulation and fre-retardancy

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第10期105卷 194-202页

作者： Jing Tian yi yang Tiantian Xue Guojie Chao Wei fan Tianxi Liu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China

The materials with thermal insulating and fre-retardant properties are highly demanded for architectures to improve the energy *** applications of conventional inorganic insulating materials such as silica aerogels are restricted by their mechanical fragility and organic insulating materials are either easily ignitable or exhibit unsatisfactory thermal insulation ***,we report an organic/inorganic composite aerogel with integrated double network structure,in which silica constituent homogeneously distribute in the anisotropic polyimide nanofber aerogel matrix and strong interfacial effect is formed between two *** integrated binary network endows the polyimide/silica composite aerogels with outstanding compressibility and flexibility even with a high inorganic content of 60%,which can withstand 500 cyclic fatigue tests at a compressive strain of 50%in the radial *** resulting composite aerogel exhibits a combination of outstanding insulating performance with a low thermal conductivity(21.2 mW m^(-1)K^(-1))and excellent resistance to a 1200℃flame without *** high-performance polyimide/silica aerogels can decrease the risk brought by the collapse of reinforced concrete structures in a fre,demonstrating great potential as efficient building materials.

关键词： Polyimide Silica Aerogel Thermal insulation Fire-retardancy

Treatment and hydraulic performances of the NiiMi process for landscape water

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第2期11卷 132-142页

作者： Jian yang Liang-bo ZHANG yi-fan WU Ya-yi WANG Cui LI Wen LIU State Key Laboratory of Pollution Control and Resources Reuse School of Environmental Science and Engineering Tongji University Shanghai 200092 China

This paper describes the NiiMi process designed to treat landscape water. The main aim of the research was to investigate the feasibility of NiiMi for removing organic and nutriment materials from landscape water. During the batch-scale NiiMi operation, the removal rates of color ranged from 66.7%o-80% , of turbidity from 31.7%-89.3%o, of chemical oxygen demand （COD） from 7%-36.5%, of total phosphor （TP） from 43%-84.2%, of soluble phosphate from 42.9%-100%, of total nitrogen （TN） from 4.2%-46.7%, and of NH4^＋-N from 39.3%-100% at the hydraulic loading of 0.2 m^3/（m^2·d）. Results showed that the removal efficiencies of COD, TP, soluble phosphate and TN decreased with the decline in the temperature. The NiiMi process had a strong shock loading ability for the removal of the organics, turbidity, TP, soluble phosphate, TN and NH4^＋-N. Three sodium chloride tracer studies were conducted, labeled as TS 1, TS2, and TS3, respectively. The mean hydraulic retention times （mean HRTs） were 31 h and 28 h for TSI and TS2, respectively, indicating the occurrence of a dead zone volume of 12% and 20% for TS 1 and TS2, respectively. TS 1 and TS2 displayed the occurrence of short-circuiting in the NiiMi system. The comparison results between TS1 and TS2 were further confirmed in the values obtained for some indicators, such as volumetric efficiency （e）, short-circuiting （S）, hydraulic efficiency （2） and number of continuously stirred tank reactors （N）.

关键词： NiiMi system Landscape water Purification efficiency Hydraulic efficiency Tracers