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Energy Engineering 2021年第2期118卷 323-339页

作者： Bilin Xu mei han Research Center of Complex Network System and Innovation Tianjin University of Finance and EconomicsTianjin300222China

Based on the theory of ecological organization,this paper analyzes the operation mechanism of chemical industry park(CIP)ecosystem by means of dynamic *** research shows that the CIP ecosystem is a complex ecological system whose operation mechanism includes two levels,namely individual enterprises and *** the level of individual enterprise,there are competition,symbiosis,invasion and other interactions between enterprises in the CIP *** the pre-determined judgment of the competition effect coefficient and the symbiosis effect coefficient,we calculate how the enterprises influence each other,and then generate their respective operation paths,andfinally realize the long-term balance of the *** the level of ecosystem,the CIP ecosystem makes self-organizing and self-adaptive adjustments and changes due to the changes of the exter-nal environment in policy,manpower,technology,capital,market,etc.,thus reaching the equilibrium state of coordinated operation and stable symbiosis with the external environment.

关键词： Ecosystem operation mechanism enterprise evolution ecological organization environmental protection policy

Sub-nanometer structured silicon-carbon composite nanolayers armoring on graphite for fast-charging and high-energy-density lithium-ion batteries

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Rare Metals 2023年第11期42卷 3692-3704页

作者： Zhen-Wei Li mei-Sheng han Jie Yu Songshan Lake Materials Laboratory Dongguan523808China Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Shenzhen Engineering Lab for Supercapacitor MaterialsSchool of Material Science and EngineeringHarbin Institute of TechnologyShenzhenShenzhen 518055China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen518055China

Silicon/carbon composites are promising alternatives to current graphite anodes in commercial lithiumion batteries(LIBs)because of their high capacity and excellent ***,the unsatisfactory fastcharging capability and cycle stability of Si/C composites caused by slow charge transport capability and huge volume change under industrial electrode conditions severely hamper their ***,a novel Si/C anode was fabricated by homogeneously depositing amorphous C-Si nanolayers on graphite(C-Si@graphite).C-Si nanolayers with uniformly dispersed sub-nanometer Si particles in 3D carbon skeleton significantly boost electron and Li-ion transport and efficiently relieve Si's agglomeration and volume *** a result,the tailored C-Si@graphite electrodes show an excellent rate capacity(760.3 mAh·g^(-1)at 5.0C)and long cycle life of over 1000 cycles at 1.0C and800 cycles at 2.0C under industrial electrode *** addition,the assembled full cells(C-Si@graphite,anode;Li[Ni_(0.8)Co_(0.1)Mn_(0.1)]O_(2),cathode)present superior fastcharging capability(240.4 Wh·kg^(-1),charging for16.2 min,3.0C)and long cycle life(80.7%capacity retention after 500 cycles at 1.0C),demonstrating the massive potential of C-Si@graphite for practical application.

关键词： Si/C anode Sub-nanometer Si Fast-charging capability Lithium-ion batteries(LIBs)

Estimation of solid concentration in solid-liquid two-phase flow in horizontal pipeline using inverse-problem approach

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Particuology 2022年第3期20卷 1-13页

作者： Ji Zhang han Yuan Ning mei Zhe Yan Marine Engineering College of EngineeringOcean University of ChinaQingdao 266100China Offshore Engineering Department of CivilEnvironmental and MiningUniversity of Western Australia35 Stirling HwyCrawleyWA 6009Australia Power Engineering and Engineering Thermophysics School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this study,an inverse-problem method was applied to estimate the solid concentration in a solid-liquid two-phase *** algebraic slip mixture model was introduced to solve the forward problem of solid-liquid convective heat *** time-average conservation equations of mass,momentum,energy,as well as the volume fraction equation were computed in a computational fluid dynamics(CFD)*** solid concentration in the CFD model was controlled using an external program that included the inversion iteration,and an optimal estimation was performed via experimental *** using a fly-ash-water mixture and sand-water mixture with different solid concentrations in a horizontal pipeline were conducted to verify the accuracy of the inverse-problem *** estimated results were rectified using a method based on the relationship between the estimated results and estimation error;consequently,the accuracy of the corrected inversion results improved *** a verification through experiments,the inverse-problem method was concluded to be feasible for predicting the solid concentration,as the estimation error of the corrected results was within 7%for all experimental samples for a solid concentration of less than 50%.The inverse-problem method is expected to provide accurate predictions of the solid concentration in solid-liquid two-phase flow systems.

关键词： Solid-liquid two-phase flow Solid concentration estimation Coupling calculation Inverse heat transfer problem Algebraic slip mixture model

Proteomic Analysis of Rice Leaves Shows the Different Regulations to Osmotic Stress and Stress Signals

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Journal of Integrative Plant Biology 2010年第11期52卷 981-995页

作者： Lie-Bo Shu Wei Ding Jin-Hong Wu fang-Jun Feng Li-Jun Luo han-Wei mei Huazhong Agricultural University Wuhan 430070China Shanghai Agrobiological Gene Center Shanghai 201106China

Following the idea of partial root-zone drying （PRD） in crop cultivation,the morphological and physiological responses to partial root osmotic stress （PROS） and whole root osmotic stress （WROS） were investigated in *** caused stress symptoms like leaf rolling and membrane *** stimulated stress signals,but did not cause severe leaf *** proteomic analysis,a total of 58 proteins showed differential expression after one or both treatments,and functional classification of these proteins suggests that stress signals regulate photosynthesis,carbohydrate and energy *** other proteins （anthranilate synthase and submergence-induced nickel-binding protein） were upregulated only in the PROS plants,indicating their important roles in stress ***,more enzymes were involved in stress defense,redox homeostasis,lignin and ethylene synthesis in WROS leaves,suggesting a more comprehensive regulatory mechanism induced by osmotic *** study provides new insights into the complex molecular networks within plant leaves involved in the adaptation to osmotic stress and stress signals.

关键词： Osmotic stress Stress Roots Rooting Plants Planting Proteins Leaves Protein products

Notch pathway inhibitor DAPT enhances Atoh1 activity to generate new hair cells in situ in rat cochleae

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Neural Regeneration Research 2017年第12期12卷 2092-2099页

作者： Wen-wei Luo Zhao han Dong-dong Ren Xin-wei Wang fang-lu Chi Juan-mei Yang Department of Otolaryngology Eye & ENT Hospital of Fudan University Research Institute of Otolaryngology Fudan University

Atoh1 overexpression in cochlear epithelium induces new hair cell formation. Use of adenovirus-mediated Atoh1 overexpression has mainly focused on the rat lesser epithelial ridge and induces ectopic hair cell regeneration. The sensory region of rat cochlea is difficult to transfect, thus new hair cells are rarely produced in situ in rat cochlear explants. After culturing rat cochleae in medium containing 10% fetal bovine serum, adenovirus successfully infected the sensory region as the width of the supporting cell area was significantly increased. Adenovirus encoding Atoh1 infected the sensory region and induced hair cell formation in situ. Combined application of the Notch inhibitor DAPT and Atoh1 increased the Atoh1 expression level and decreased hes1 and hes5 levels, further promoting hair cell generation. Our results demonstrate that DAPT enhances Atoh1 activity to promote hair cell regeneration in rat cochlear sensory epithelium in vitro.

关键词： nerve regeneration Atoh 1 DAPT. transdifferentiation gamma secretase inhibitor cochlea sensory epithelium fetal bovine serum hair cell supporting cell hair cell regeneration neural regeneration

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ωB-splines

Science in China(Series F) 2008年第8期51卷 1167-1176页

作者： fang mei'E WANG GuoZhao Institute of Computer and Image Processing and the Department of Mathematics Zhejiang University Hangzhou 310027 China College of Computer Hangzhou Dianzi University Hangzhou 310018 China

A new kind of spline with variable frequencies, called ωB-spline, is presented. It not only unifies B-splines, trigonometric and hyperbolic polynomial B-splines, but also produces more new types of splines, ωB-spline bases are defined in the space spanned by {coso） t, sino）t, ], t, ..., t^n, ...} with the sequence of frequencies m where n is an arbitrary nonnegative integer, ωB-splines persist all desirable properties of B-splines. Furthermore, they have some special properties advantageous for modeling free form curves and surfaces.

关键词： ωB-splines frequencies B-splines trigonometric polynomial B-splines hyperbolic polynomial B-splines

The holographic fermions dual to massive gravity

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Science China(Physics,Mechanics & Astronomy) 2016年第10期59卷 49-57页

作者： Li-Qing fang[[ Xiao-mei Kuang Jian-Pin Wu School of Physics and Electronic Information Shangrao Normal UniversityShangrao 334000China Department of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Key Laboratory of High Temperature Superconductors Shanghai 200444China Instituto de Fisica Pontificia Universidad Catolica de ValparaisoCasilla 4059ValparaisoChile Institute of Gravitation and Cosmology Department of PhysicsSchool of Mathematics and PhysicsBohai UniversityJinzhou 121013China

We investigate the properties of the spectral function of the fermionic operator in the field theory which is dual to a 4-dimensional massive gravity. We first study the Fermi surface and the dispersion relation in the dual boundary theory. We find that as the massive parameters is decreased, the Fermi momentum becomes lower and the low energy excitation near Fermi surface behaves more like non-Fermi liquid. Then, we introduce a dipole coupling in the bulk theory and explore the emergence of a gap in the fermionic spectral function. It is found that larger critical dipole coupling is needed to open the gap than that in Einstein gravity. Accordingly,in the field theory dual to massive gravity, it requires stronger negative dipole coupling to generate the marginal Fermi liquid.

关键词： holography duality AdS/CFT correspondence holographic fermions

Spindle LiFePO_4 particles as cathode of lithium-ion batteries synthesized by solvothermal method with glucose as auxiliary reductant

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Rare Metals 2015年第10期34卷 731-737页

作者： Li Ren Xing-En Li fang-fang Wang Yang han Polymer Research Institute College of Chemical EngineeringHebei University of Technology

The well-distribution spindle Li Fe PO4(LFP)nanoparticles as cathode of lithium secondary batteries were synthesized by a solvothermal reaction route at low temperature(180 °C) in which the ascorbic acid was used as reducing agent. In order to guarantee that the p H values of thermal systems were not affected too much and the reducibility of the system was enhanced at the same time,glucose was chosen as an auxiliary reductant in this reaction. The obtained powders were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM),and laser particle analyzer. The results show that the carbon-coated uniform spindle olivine Li Fe PO4/C-glucose particles(glucose as auxiliary reductant, LFP/C-G) are prepared with the size 500–600 nm and without any impurity phases. Their electrochemical properties were evaluated by electrochemical impedance spectroscopy,cyclic voltammetry, and galvanostatic charge/discharge tests. LFP/C-G has a higher conductivity and better reversible capability than carbon-coated LFP(LFP/C). The highest discharge capacity of LFP/C-G is 161.3 mAh·g-1at0.1C and 108.6 mAh·g-1at 5.0C, respectively. The results imply that the neat crystal nanostructure of LFP/C-G has excellent capacity retention and cycling *** adding of glucose is the key factor for the welldistribution and neat crystal structure of nanoparticles,thus the electrochemical performances of materials are improved.

关键词： Lithium-ion battery LiFePO4 Spindle Solvothermal G

Blending Basic Shapes By C-Type Splines and Subdivision Scheme

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Computer Modeling in Engineering & Sciences 2019年第7期120卷 45-62页

作者： Xiang Li mei-E fang Qian Qi School of Computer Science and Cyber Engineering Guangzhou UniversityGuangzhouChina School of Computer Hangzhou Dianzi UniversityHangzhouChina

In this article,we adopt the C-type spline of degree 2 to model and blend basic shapes including conics and circle *** C-type spline belongs to theωB-spline category of splines that are capable of blending polynomial,trigonometric and hyperbolic *** used basic shapes can be exactly represented by these types of *** derive explicit formulas for the convenience of modeling the basic *** entire blending curve is C^*** comparison with the existing best blending method by rational G^2 splines,which are rational splines of degree 3,the proposed method allows simpler representation and blending of the basic curves,and it can represent numerous basic shapes including the hyperbolic *** also design a subdivision method to generate blending curves;this method is precise for the basic curves and approximate for the blending *** subdivision process is efficient for modeling and *** has also proven to be C^1-continuous by the asymptotically equivalent theory and the continuity of stationary subdivision *** addition,we extend the proposed methods to cases involving the modeling and blending of basic *** provide many examples that illustrate the merits of our methods.

关键词： Basic shapes blending C-type splines subdivision C^1-continuous

Subdivision of Uniform ωB-Spline Curves and Two Proofs of Its C^(k-2)-Continuity

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Computer Modeling in Engineering & Sciences 2018年第5期115卷 263-280页

作者： Jing Tang mei-e fang Guozhao Wang School of Computer Sciences and Educational Softwares Guangzhou UniversityGuangzhouChina Department of Mathematics Zhejiang UniversityHangzhouChina

ωB-splines have many optimal properties and can reproduce plentiful commonly-used analytical *** this paper,we further propose a non-stationary subdivision method of hierarchically and efficiently generatingωB-spline curves of arbitrary order ofωB-spline curves and prove its C^k?2-continuity by two kinds of *** first method directly prove that the sequence of control polygons of subdivision of order k converges to a C^k?2-continuousωB-spline curve of order *** second one is based on the theories upon subdivision masks and asymptotic equivalence etc.,which is more convenient to be further extended to the case of surface *** the problem of approximation order of this non-stationary subdivision scheme is also *** a uniform ωB-spline curve has both perfect mathematical representation and efficient generation method,which will benefit the application ofωB-splines.

关键词： ωB-spline subdivision C^(k-2)-continuity asymptotic equivalence approximation order