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CMC surfaces in the hyperbolic 3.space

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Chinese Science Bulletin 1998年第7期43卷 547-550页

作者： YU Zuhuan 1, 2 and LI Zhenqi 1, 3.1. Institute of mathematics, Fudan University, Shanghai 20043., china 2. Department of mathematics,Sichuan Union University, Chengdu 610064, china 3. Department of mathematics, Nanchang University, Nanchang 3. nstitute of Mathemalics Fudan University Shanghai China Department of mathematics Sichuan Union University Chengdu China Department of mathematics Nanchang University Nanchang China

CMC-H surfaces satisfying H≥1 are studied. It is proved that these surfaces possess a natural representation which is a generalization of the Bryant’s result.

关键词： hyperbolic space CMC surface Weierstrass representation.

On the periodic solutions of a type of differential-iterative equations

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Chinese Science Bulletin 1998年第3期43卷 204-206页

作者： GE Weigao 1, LIU Zhengrong 2 and YU Yuanhong 3.1. Department of Applied mathematics, Beijing Institute of Technology, Beijing 100081, china 2. Department of mathematics, Yunnan University, Kunming 650091, china 3. Institute of Applied mathematics, C Department of Applied mathematics Beijing Institute of Technology Beijing China Department of mathematics Yunnan University Kunming China Institute of Applied mathematics Chinese Academy of Sciences Beijing China

Sufficient conditions for the existence of periodic solutions to a type of nonautonomous differential_iterative equations are given.

关键词： differential_iterative equation periodic solution fixed point.

A first-principles study of dihydroazulene as a possible optical molecular switch

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Science china(Physics,Mechanics & Astronomy) 2011年第3期Mechanics & Astronomy) .卷 437-441页

作者： XIA CaiJuan1, LIU DeSheng2,3.& LIU HanChen1 1 school of Science, Xi’an Polytechnic University, Xi’an 710048, china 2 school of Physics, State Key Laboratory of Crystal Materials, Shandong University, {3., china 3.Department of Physics, Jining University, Qufu 273.55, china 1. school of Science Xi’an Polytechnic University Xi’an 710048 China2. School of Physics State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China3. Department of Physics Jining University Qufu 273155 China

By applying nonequilibrium Green's function formalism combined with first-principles density functional theory, we investigate the electronic transport properties of the dihydroazulene optical molecular switch. Three kinds of adsorption sites including the hollow, bridge and top sites are studied. The two forms of this molecule, namely the open form and the closed form, can reversibly switch from each other upon photoexcitation. Their transmission spectra are remarkably distinctive. Theoretical results show that the current of the closed form is always significantly larger than that of the open form for all three adsorption sites, which promises this system as possibly one of the good candidates for optical switches due to its unique advantage, and which may have some potential applications in the future molecular circuit.

关键词： molecular switch nonequilibrium Green’s function electronic transport density functional theory

Proteomic analysis of urinary exosomes reveals ferroptosis-associated proteins are involved in diabetic nephropathy

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Genes & Diseases 2024年第5期11卷 6-8页

作者： Kaida Mu Yanping Yang Xiaofei An Jie Zhu Jing Zhang Yanfei Jiang Xiaorong Yang jinan Zhang Department of Endocrinology and Metabolism Shanghai University of Medicine&Health Sciences Affiliated Zhoupu HospitalShanghai 201318China Department of Endocrinology Affiliated Hospital of Nanjing University of Chinese MedicineNanjingJiangsu 210029China

Diabetic nephropathy(DN)is one of the major microvascular complications of diabetes mellitus and a major cause of end-stage renal disease(ESRD).The pathogenesis of DN is unknown,but it is closely related to disorders of glucolipid metabolism,abnormal hemodynamics,chronic inflammatory response,oxidative stress,and *** DN develops into ESRD,it is often more difficult to treat than ESRD caused by other kidney ***,a deeper knowledge of the pathophysiological mechanisms of DN and the discovery of candidate markers for early diagnosis are *** secreted by renal cells can regulate a series of pathophysiological processes such as translation and transcription by releasing miRNAs or proteins,thereby regulating the biological functions and phenotype of recipient kidney *** has been found that miRNA secreted by urinary exosomes in patients with DN is involved in the occurrence and development of DN and may become biological markers.1 However,studies on exosome proteins are relatively few and lack validation in *** the present study,we identified an altered pathway in urinary exosomes from DN patients for the first ***,the altered ferroptosis-related proteins may represent novel candidate markers for early progression of disease and/or early treatment effects.

关键词： urinary metabolism diagnosis

SMALLEST g-SUPERSOLUTION FOR BSDE WITH CONTINUOUS DRIFT COEFFICIENTS

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Chinese Annals of mathematics,Series B 2000年第3期21卷 359-366页

作者： LIN QINGQUAN (school of mathematics and System Science, Shandong University, jinan 250100, {3..) PENG SHIGE(school of mathematics and System Science, Shandong University, jinan 250100, {3..) E-mail: Linqingquan@math. sdu. cn Peng@sdu. edu. cn school of mathematics and System Science Shandong University Jinan 250100 China

The authors prove the existence and uniqueness of smallest g-supersolution with an equality constrains on (y, z) for one demensional stochastic differential equations whose drift coefficients are continuous and linear... 详细信息

关键词： Backward stochastic differentail equation g-supersolution Constraint

Infinite Interval Backward Stochastic Differential Equations in the Plane

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Acta Mathematicae Applicatae Sinica 2003年第3期19卷 485-490页

作者： Yan-ling Guschool of mathematics and System Sciences, Shandong University, jinan 250100, {3. school of mathematics and System Sciences Shandong University Jinan 250100 China

This paper studies the existence and uniqueness of solution of infinite interval backward stochastic differential equation (BSDE) in the plane driven by a Brownian sheet.

关键词： Two-parameter mixed type BSDE

Effect of physiological heterogeneity of E. coli population on antibiotic susceptivity test

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Science china(Life Sciences) 2007年第6期50卷 808-813页

作者： LIU YuQing1,3. ZHANG HuaiQiang2, SHEN JianZhong3.& GAO PeiJi2 1 Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Science, jinan 250100, china 2 State Key Laboratory of Microbial Technology, Shandong University, jinan 250100, china 3.College of Veterinary Medicine, china Agricultural University, Beijing 100094, china 1. Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Science Jinan 250100 China 3. College of Veterinary Medicine China Agricultural University Beijing 100094 China 2. State Key Laboratory of Microbial Technology Shandong University Jinan 250100 China

According to the instantaneous growth rate (dN/dt) of E. coli CVCC249 growing in batch culture, the entire growth progress was distinguished into four phases: accelerating growth phase, constant growth phase, decelerating growth phase; declining phase, in each of which obvious variation in physiological; biochemical properties was detected, including total DNA, total protein,; MTT-dehydrogenase activity, etc., that led to difference in their antibiotic susceptivity. Antibiotic susceptivity of the population sampled from each phase was tested by Concentration-killing Curve (CKC) approach following the formula N=N 0/{1+exp[r·(x-BC 50)]}, showing as normal distribution at the individual cell level for an internal population, in which the median bactericidal concentration BC 50 represents the mean level of susceptivity, while the bactericidal span BC 199=(2lnN 0)/r indicates the variation degree of the antibiotic susceptivity. Furthermore, tested by CKC approach, the antibiotic susceptivity of E. coli CVCC249 population in each physiological phase to gentamicin or enoxacin was various: susceptivity of the population in the constant growth phase; declining phase all increased compared with that in the accelerating growth phase for gentamicin but declined for enoxacin. The primary investigations revealed that the physiological phase should be taken into account in the context of antibiotic susceptivity; research into antimicrobial mechanism. However there are few reports concerned with this study. Further research using different kinds of antibiotics with synchronized continuous culture of different bacterial strains is required.

关键词： instantaneous growth rate, batch culture, physiological heterogeneity, concentration-killing curve, antibiotic susceptivity test

Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO_2 Films Deposited by APCVD

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Journal of Materials Science & Technology 1997年第1期13卷 50-56页

作者： Deheng ZHANG(Dept. of Physics, Shandong University, jinan 250100, china)Honglei MA(Institute of Optoelectronic Materials and Devices, Shandong University, jinan 250100, china) Dept. of Physics Shandong University Jinan 250100 China Institute of Optoelectronic Materials and Devices Shandong University Jinan 250100 China

Transparent conducting F-doped texture SnO2 films with resistivity as low as 5× 10-4 Ω ·cm,with carrier concentrations between 3.5 × 1020 and 7× 1020 cm-3.and Hall mobilities from 15.7 to 20.1 cm2/(V/s) have been prepared by atmosphere pressure chemical vapour deposition (APCVD). These polycrystalline films possess a variable preferred orientation, the polycrystallite sizes and orientations vary with substrate temperature. The substrate temperature and fluorine flow rate dependence of conductivity, Hall mobility and carrier conentration fOr the resultingfilms have been obtained. The temperature dependence of the mobiity and carrier concentrationhave been measured over a temperature range 16～400 K. A systematically theoretical analysis on scattering mechanisms for the highly conductive SnO2 films has been given. Both theoretical analysis and experimental results indicate that for these degenerate, polycrystalline SnO2 ：F films in the low temperature range (below 100 K), ionized impurity scattering is main scattering mechanism. However, when the temperature is higher than 100 K, the lattice vibration scattering becomes dominant. The grain boundary scattering makes a small contribution to limit the mobility of the films.

关键词： SnO cm Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO2 Films Deposited by APCVD

The rate of convergence of the Lax-Oleinik semigroup-degenerate fixed point case

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Science china mathematics 2011年第3期54卷 545-554页

作者： WANG KaiZhi1,2 & YAN Jun1 1school of Mathematical Sciences and Key Lab of mathematics for Nonlinear Science, Fudan University, Shanghai 20043., china {3., Jilin University, Changchun 13.012, china 1. school of Mathematical Sciences and Key Lab of mathematics for Nonlinear Science Fudan University Shanghai 200433 China2. School of Mathematics Jilin University Changchun 130012 China

For the standard Lagrangian in classical mechanics, which is defined as the kinetic energy of the system minus its potential energy, we study the rate of convergence of the corresponding Lax-Oleinik semigroup. Under the assumption that the unique global minimum point of the Lagrangian is a degenerate fixed point, we provide an upper bound estimate of the rate of convergence of the semigroup.

关键词： Hamiltonian system weak KAM theorem Lax-Oleinik semigroup