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SOLUTIONS TO LINEAR DIFFERENTIAL EQUATIONS WITH SOME COEFFICIENT BEING LACUNARY SERIES OF [p, q]-ORDER IN THE COMPLEX PLANE

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Annals of Differential Equations 2014年第3期30卷 364-372页

作者： meilong zhan Xiumin Zheng Institute of Math. and Information Science Jiangxi Normal University

In this paper, we investigate the growth and value distribution of meromorphic solutions to higher order linear differential equations with some dominating coefficient being Lacunary series and the results of this pap... 详细信息

关键词： linear differential equation meromorphic solution Lacunary series

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一类复q-平移差分-微分多项式的值分布

南昌大学学报（理科版） 2021年第4期45卷 331-335,339页

作者：郑秀敏占美龙江西师范大学数学与统计学院江西南昌330022

在本文中,我们研究了一类正有穷级整函数的q-平移差分-微分多项式的Borel例外值。

关键词： Nevanlinna理论 q-平移差分-微分多项式 Borel例外值

Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films

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Frontiers of Materials Science 2019年第4期13卷 382-388页

作者： Jun ZHAO Hang zhan Hai Tao CHEN Jian Nong WANG School of Mechanical and Power Engineering East China University of Science and Technology130 Meilong RoadShanghai 200237China

A floating-catalyst spray pyrolysis method was used to synthesize carbon nanotube(CNT)thin *** the use of ammonium chloride as a pore-former and epoxy resin(EP)as an adhesive,CNT/EP composite films with a porous structure were prepared through the post-heat *** films have excellent thermal insulation(0.029–0.048 W·m^−1·K^−1)at the thickness direction as well as a good thermal conductivity(40–60 Wm^−1·K^−1)in the film *** study provides a new film material for thermal control systems that demand a good thermal conductivity in the plane but outstanding thermal insulation at the thickness direction.

关键词： carbon nanotube composite film layered porous structure thermal insulation thermal conductivity pore-former

Preparation of carbon nanotube/epoxy composite films with high tensile strength and electrical conductivity by impregnation under pressure

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Frontiers of Materials Science 2019年第2期13卷 165-173页

作者： Heng CHEN Yun CHEN Hang zhan Guang WU Jian Ming XU Jian Nong WANG School of Mechanical and Power Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China Shanghai Institute of Space Power Sources 2965 Dongchuan Road Shanghai 200245 China

Based on the production of a carbon nanotube (CNT) assembly, a new technique is developed for preparing CNT/epoxy (EP) composite films with high tensile strength and electrical conductivity. CNTs are synthesized by floating catalyst spray pyrolysis. After self-assembling into a hollow cylindrical assembly, CNTs are drawn and wound on a rotating drum to form a uniform CNT film. EP resin solutions of different concentrations are used to fill into the pores within the film under different pressures and form composite films after hot-press curing. The permeability of the EP resin and thus the interfacial bonding between the CNT and the EP resin are studied by varying the concentration of the EP resin solution and the pressure used for impregnation. Under optimal preparation conditions, the composite film contains CNTs of a high content of 59 wt.%, and shows a high tensile strength of 1.4 GPa and a high electrical conductivity of 1.4x10^5 S·m^-1, 159% and 309% higher than those of the neat CNT film, respectively.

关键词： carbon nanotube alignment resin matrix composite tensile strength impregnation under pressure

Interface engineering of MXene-based heterostructures for lithiumsulfur batteries

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Nano Research 2023年第7期16卷 9158-9178页

作者： Siyu Wu Xiang Li Yongzheng zhang Qinghua Guan Jian Wang Chunyin Shen Hongzhen Lin Jitong Wang Yanli Wang Liang zhan Licheng Ling State Key Laboratory of Chemical Engineering East China University of Science and Technology130 Meilong RoadShanghai 200237China Key Laboratory of Specially Functional Polymeric Materials and Related Technology(Ministry of Education) School of Chemical EngineeringEast China University of Science and Technology130 Meilong RoadShanghai 200237China i-Lab&CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of SciencesSuzhou 215123China Helmholtz Institute Ulm(HIU) Ulm D89081Germany

High energy density and low cost make lithium-sulfur(Li-S)batteries as one of the next generation's promising energy storage ***,the following problems need to be solved before commercialization:(i)the shuttling effect and sluggish redox kinetics of lithium polysulfides in sulfur cathode;(ii)the formation of lithium dendrites and the crack of solid electrolyte interphase;(iii)the large volume changes during charge and discharge ***,as newly emerging two-dimensional transition metal carbides/nitrides/carbonitrides,have attracted widespread attention due to their abundant active surface terminals,adjustable vacancies,and high electrical *** MXene-based heterogeneous structures is expected to solve the stacking problem induced by hydrogen bonds or Van der Waals force and to provide other charming physiochemical ***,we generalize the design principles of MXene-based heterostructures and their functions,i.e.,adsorption and catalysis in advanced conversion-based Li-S ***,the physiochemical properties of MXene and MXene-based heterostructures are briefly ***,the catalytic functions of MXene-based heterostructures with the compositional constituents including carbon materials,metal compounds,organic frameworks,polymers,single atoms and special high-entropy MXenes are comprehensively summarized in sulfur cathodes and lithium ***,the challenges of MXene-based heterostructure in current Li-S batteries are pointed out and we also provide some enlightenments for future developments in high-energy-density Li-S batteries.

关键词： MXene heterostructures lithium-sulfur battery shuttle effect interface engineering

Phosphate limitation increases coenzyme Q10 production in industrial Rhodobacter sphaeroides HY01

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Synthetic and Systems Biotechnology 2019年第4期4卷 212-219页

作者： Lu zhang Leshi Liu Ke-Feng Wang Lan Xu Liming Zhou Weishan Wang Chuan Li Zheng Xu Tong Shi Haihong Chen Yuanhang Li Hui Xu XiuLiang Yang Zhichun Zhu Biqin Chen Dan Li Guanghuang zhan Si-Liang zhang Li-Xin zhang Gao-Yi Tan State Key Laboratory of Bioreactor Engineering(SKLBE) And School of BiotechnologyEast China University of Science and Technology(ECUST)No.130 Meilong RoadShanghai200237China State Key Laboratory of Microbial Resources and CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of Sciences(CAS)No.1 Beichen West RoadBeijing100101China Institute of Applied Ecology Chinese Academy of SciencesShenyang110016China Shandong Jincheng Bio-Pharmaceutical Co. LtdNo.117 Qixing River RoadZibo255130China Inner Mongolia Kingdomway Pharmaceutical Co. LtdTuoketuo Power Industrial ParkHohhot010206China Department of Biology Beijing Institute of EducationBeijing 100044China

Coenzyme Q10(CoQ10)is an important component of the respiratory chain in humans and some *** a high-value-added nutraceutical antioxidant,CoQ10 has excellent capacity to prevent cardiovascular *** content of CoQ10 in the industrial Rhodobacter sphaeroides HY01 is hundreds of folds higher than normal physiological *** this study,we found that overexpression or optimization of the synthetic pathway failed CoQ10 overproduction in the HY01 ***,under phosphate-limited conditions(decreased phosphate or in the absence of inorganic phosphate addition),CoQ10 production increased significantly by 12%to220 mg/L,biomass decreased by 12%,and the CoQ10 productivity of unit cells increased by 27%.In subsequent fed-batch fermentation,CoQ10 production reached 272 mg/L in the shake-flask fermentation and 1.95 g/L in a 100-L bioreactor under phosphate ***,to understand the mechanism associated with CoQ10 overproduction under phosphate-limited conditions,the comparatve transcriptome analysis was *** results indicated that phosphate limitation combined with glucose fed-batch fermentation represented an effective strategy for CoQ10 production in the *** limitation induced a pleiotropic effect on cell metabolism,and that improved CoQ10 biosynthesis efficiency was possibly related to the disturbance of energy metabolism and redox potential.

关键词： R sphaeroides CoQ10 Phosphate limitation Overproduction Scale-up Transcriptome