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Biomimetic photoelectric conversion systems based on artificial membranes

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Science China Chemistry 2011年第4期54卷 603-610页

作者： TIAN ye jiang Lei Center for Molecular Science Institute of ChemistryChinese Academy of SciencesBeijing 100190China

Biological light-driven proton pumps which could transfer light energy to electrical energy have aroused intense interest in the past *** related researches have been conducted to mimic this process in vitro because of its potential significant *** review describes the progress in biomimetic photoelectric conversion systems based on different kinds of promising artificial *** biological bacteriorhodopsin and the photosensitive chemical molecules which could be used to achieve the photoelectric conversion function are *** a short outlook in this field is demonstrated at the end.

关键词： biomimetic photoelectric conversion artificial membranes bacteriorhodopsin photosensitive chemical molecules

Precise Rates in the Law of Iterated Logarithm for the Moment of I.I.D. Random Variables

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Acta Mathematica Sinica,English Series 2006年第3期22卷 781-792页

作者： ye jiang Li Xin ZHANG College of Business and Administration Zhejiang University of Technology Department of Mathematics Zhejiang University

Let{X,Xn;n≥1} be a sequence of i,i.d, random variables, E X = 0, E X^2 = σ^2 〈 ∞.Set Sn=X1＋X2＋…＋Xn,Mn=max k≤n│Sk│,n≥*** an=O（1/loglogn）.In this paper,we prove that,for b〉-1,lim ε→0 →^2（b＋1）∑n=1^∞ （loglogn）^b/nlogn n^1/2 E{Mn-σ（ε＋an）√2nloglogn}＋σ2^-b/（b＋1）（2b＋3）E│N│^2b＋3∑k=0^∞ （-1）k/（2k＋1）^2b＋3 holds if and only if EX=0 and EX^2=σ^2〈∞.

关键词： the law of iterated logarithm strong approximation truncation method i.i.d random variables

Advances in theoretical study on transition-metal-catalyzed C-H activation

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Science China Chemistry 2016年第11期59卷 1448-1466页

作者： Yuan-ye jiang Xiaoping Man Siwei Bi School of Chemistry and Chemical Engineering Qufu Normal University

Transition-metal-catalyzed C–H activation represents one of most attractive research fields in modern organic chemistry while theoretical studies have become a popular and effective tool for elucidating mechanism nowadays. The recent achievements in the cross field of the two orientations are reviewed in this article. The first part introduced the advances in theoretical study on transition-metal-catalyzed C–H activation. The elegant work reported mainly in and after 2013, classified according to the mechanisms of C–H activation, were covered. The second part provided an analysis on the distribution of quantum-chemical methods, solvation models and basis sets in the collected theoretical studies.

关键词： transition metal C–H activation mechanism DFT

Effects of Rare Earth,Titanium,and Magnesium Additions on Microstructures and Properties of High-boron Medium-carbon Alloy

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Journal of Iron and Steel Research International 2016年第11期23卷 1226-1233页

作者： Xiao-li SHI ye-hua jiang Rong ZHOU Faculty of Materials Science and Engineering Kunming University of Science and Technology

In order to improve the toughness and wear resistance of high-boron medium-carbon alloy （HBMCA）, a novel wear-resistant HBMCA comprising granular borocarbide was obtained by titanium, magnesium, and rare earth modifications. These modifications gave rise to greatly refined as-cast eutectic borocarbide structures and a less interconnected continuous borocarbide network. Heat treatment mostly produced broken and spheriodized borocarbides that tended to exist as isolated particles in modified HBMCA. The heat treated modified HBMCA exhibited enhanced hardness than pristine and impact toughness was improved significantly to 12.5 J/cm^2. In addition, it displayed 2.39 and 1.7 times greater wear resistance than high-speed steel （HSS） and high nickel-chromium alloy steel （Cr25） at high temperature （500℃）, respectively. Here, the modification mechanisms involving Re2O3, TiN, and MgO/ MgS heterogeneous nuclei were discussed.

关键词： modification eutectic borocarbide spheroidization toughness wear resistance

Precise Asymptotics in the Baum-Katz and Davis Laws of Large Numbers of ρ-mixing Sequences

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Acta Mathematica Sinica,English Series 2005年第5期21卷 1057-1070页

作者： Wei HUANG ye jiang Li Xin ZHANG Department of Mathematics Zhejiang University Hangzhou 310028 P. R. China

Let {X,Xn;n ≥ 1} be a strictly stationary sequence of ρ-mixing random variables with mean zeros and finite variances. Set Sn =∑k=1^n Xk, Mn=maxk≤n｜Sk｜,n≥*** limn→∞ESn^2/n=：σ^2〉0 and ∑n^∞=1 ρ^2/d（2^n）〈∞,where d=2 if 1≤r〈2 and d〉r if r≥*** prove that if E｜X｜^r 〈∞,for 1≤p〈2 and r〉p,then limε→0ε^2（r-p）/2-p ∑∞n=1 n^r/p-2 P{Mn≥εn^1/p}=2p/r-p ∑∞k=1（-1）^k/（2k＋1）^2（r-p）/（2-p）E｜Z｜^2（r-p）/2-p,where Z has a normal distribution with mean 0 and variance σ^2.

关键词： ρ-mixing random variable Tail probabilities Baum-Katz law Davis law

Model parameters estimation of aero-engine based on hybrid optimization algorithm

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航空动力学报 2011年第7期26卷 1665-1671页

作者： LI Qiu-hong LI ye-bo jiang Dian-wen (College of Energy and Power EngineeringNanjing University of Aeronautics and Astronautics Nanjing 210016 China

A hybrid optimization algorithm for the time-domain identification of multivariable,state space model for aero-engine was presented in this *** optimization procedure runs particle swarm optimization(PSO) and least squares optimization(LSO) "in series".PSO starts from an initial population and searches for the optimum solution by updating ***,it can sometimes run into a suboptimal *** LSO can start from the suboptimal solution of PSO,and get an optimum solution by conjugate gradient *** algorithm is suitable for the high-order multivariable system which has many parameters to be estimated in wide *** optimization algorithm is applied to estimate the parameters of a 4-input 4-output state variable model(SVM) for *** simulation results demonstrate the effectiveness of the proposed algorithm.

关键词： aero-engine state variable model(SVM) particle swarm optimization(PSO) least squares optimization(LSO) hybrid optimization algorithm

Hepatic effect of NAC on sevear acute pancteatise of rats

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Asian Pacific Journal of Tropical Medicine 2014年第2期7卷 141-143页

作者： Fang Chen ye-jiang Zhou Surgical Emergency Center People's Hospital General Surgery.Luzhou Medical School Affiliated Hospital

Objective:To analyze the hepatic protection of n-acetvl cysteine(NAC)on severe acute pancreatitis(SAP).Methods:SD rats were randomly divided into control group,SAP group and NAC *** AHO method was adopted to establish the model,2 h after modeling,rats in NAC group had intraperitoneal injection of NAC(200 mg/kg).Ten rals from each group were sacrifieed in even'6 and 12 h at different time[mints *** damage,liver function and serum amylase,AST,ALT and malondialdehyde(MDA)were ***:Serum amylase,AST,AIT and MDA content in SAP,NAC group at each time point were significantly higher in the control group(P<0.05),serum amylase,AST,ALT and MDA content in NAC group rats were lower in the SAP group significantly(P<0.05);Microscopic examination showed that the liver injury in rats and the NAC group significantly reduced in the SAP ***:NAC provides effective protection against liver damage to SAP,protective from SAP liver injury.

关键词： NAC SAP Liver injury Protection

A new sesterterpenoid from the fruits of Phellodendron chinense *** Schneid

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Chinese Chemical Letters 2008年第8期19卷 937-939页

作者： Chen Yan ye Wang Xiao jiang Hao The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences Guiyang 550002 China

A new sesterterpenoid phellogine was isolated from the fruits of Phellodendron chinense var. glabriusculum Schneid. Its structure was elucidated on the basis of spectral analysis.

关键词： Phellodendron chinense var. glabriusculum Schneid. Phellogine

Total brachial plexus injury： contralateral C7 root transfer to the lower trunk versus the median nerve

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Neural Regeneration Research 2018年第11期13卷 1968-1973页

作者： ye jiang Li Wang Jie Lao Xin Zhao Department of Hand Surgery Huashan Hospital Fudan University Shanghai China Key Laboratory of Hand Reconstruction Ministry of Health Shanghai China Shanghai Key Laboratory of Peripheral Nerve and Microsurgery Shanghai China Department of Hand Surgery the Third Hospital of Hebei Medical University Shijiazhuang Hebei Province China

Contralateral C7（cC7） root transfer to the healthy side is the main method for the treatment of brachial plexus root injury. A relatively new modification of this method involves cC7 root transfer to the lower trunk via the prespinal route. In the current study, we examined the effectiveness of this method using electrophysiological and histological analyses. To this end, we used a rat model of total brachial plexus injury, and cC7 root transfer was performed to either the lower trunk via the prespinal route or the median nerve via a subcutaneous tunnel to repair the injury. At 4, 8 and 12 weeks, the grasping test was used to measure the changes in grasp strength of the injured forepaw. Electrophysiological changes were examined in the flexor digitorum superficialis muscle. The change in the wet weight of the forearm flexor was also measured. Atrophy of the flexor digitorum superficialis muscle was assessed by hematoxylin-eosin staining. Toluidine blue staining was used to count the number of myelinated nerve fibers in the injured nerves. Compared with the traditional method, cC7 root transfer to the lower trunk via the prespinal route increased grasp strength of the injured forepaw, increased the compound muscle action potential maximum amplitude, shortened latency, substantially restored tetanic contraction of the forearm flexor muscles, increased the wet weight of the muscle, reduced atrophy of the flexor digitorum superficialis muscle, and increased the number of myelinated nerve fibers. These findings demonstrate that for finger flexion functional recovery in rats with total brachial plexus injury, transfer of the cC7 root to the lower trunk via the prespinal route is more effective than transfer to the median nerve via subcutaneous tunnel.

关键词： nerve regeneration total brachial plexus injury contralateral C7 root nerve transfer lower trunk median nerve neural regeneration