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Changes in muscular strength and electromyogram in rats with muscular disuse atrophy following electrical stimulation

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Neural Regeneration Research 2006年第9期1卷 809-812页

作者： Xiaoyu Lü1, Xuanming Hao2 1Department of Rehabilitation and Physiotherapy, guangzhou General Hospital of guangzhou Military Area Command of Chinese PLA, guangzhou 510010, Guangdong Province, china 2College of Sports Science, south china normal university, guangzhou 510631, Guangdong Province, china Department of Rehabilitation and Physiotherapy Guangzhou General Hospital Guangzhou Military Area Command Guangzhou 510010 Guangdong Province China College of Sports Science South China Normal University Guangzhou 510631 Guangdong Province China

BACKGROUND: Atrophy of skeletal muscle is found under the condition of muscular disuse or in the process of fixation. It is affected by fixation, and electromyogram (EMG) discharge and muscular strength levels will be significantly decreased with accelerating tendency. Electrical stimulation (ES) therapy can release the velocity of muscular disuse atrophy effectively, so it is an effective method for preventing and treating muscular disuse atrophy and accelerating rehabilitation velocity following removal of fixation. OBJECTIVE: To observe the effect of ES therapy at different time points following the fixation of rat models of muscular disuse atrophy on muscular strength and EMG of quadriceps femoris. DESIGN: A randomized and controlled animal experiment. SETTING: Department of Rehabilitation and Physiotherapy, guangzhou General Hospital of guangzhou Military Area Command of Chinese PLA; College of Sports Science, south china normal university. MATERIALS: Male SD rats, of clean grade, aged 4 months old, weighing (230±10) g, were provided by the Animal Experimental Center of Sun Yat-sen university. EMG measurement and analysis system (NEC Company, Japan) and four-channel recorder (NEC Company, Japan) were used in this experiment. METHODS: This experiment was carried out in the Laboratory of Human Sports Science, south china normal university between September 2003 and March 2004. Totally 125 successful SD rat models of muscular disuse atrophy were randomly divided into 5 groups with 25 rats in each by a lot: normal control group, in which, the rats were untouched; ES 24 hours, 1, 2 and 3 weeks groups: the knees of rats in these four groups were fixed. Rats in four groups underwent ES therapy at 24 hours, 1, 2 and 3 weeks after fixation. T90-Ⅱ computer ES muscular strength training instrument was used in ES therapy every other day. The instrument was set as square wave, 5 mA current intensity and 10 minutes a day. Muscular strength of quadriceps femoris and data of E

关键词： electrical stimulation disuse atrophy velocity of strength training animal experiment skeletal muscle used in strength of SD rat

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Birth-death processes on trees

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Science china Mathematics 2010年第11期53卷 2993-3004页

作者： MA YuTao school of mathematical sciences & Laboratory of Mathematics and Complex Systems, Beijing normal university, Beijing 100875, china 1. school of mathematical sciences & Laboratory of Mathematics and Complex Systems Beijing Normal University Beijing 100875 China

In this paper, we consider birth-death processes on a tree T and we are interested when it is regular, recurrent and ergodic (strongly, exponentially). By constructing two corresponding birth death processes on Z+, we obtain computable conditions sufficient or necessary for that (in many cases, these two conditions coincide). With the help of these constructions, we give explicit upper and lower bounds for the Dirichlet eigenvalue λ0. At last, some examples are investigated to justify our results.

关键词： birth-death process tree ergodicity Dirichlet eigenvalue

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Research on the method for retrieving soil moisture using thermal inertia model

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Science china Earth sciences 2006年第5期49卷 539-545页

作者： LIU Zhenhua1 & ZHAO Yingshi2 1. Information College, south china Agricultural university, guangzhou 510642, china 2. Graduate university of Chinese Academy of sciences, Beijing 100049, china 1. Information College South China Agricultural University Guangzhou 510642 China 2. Graduate university of Chinese Academy of sciences Beijing 100049 China

In order to improve accuracy of soil moisture inversion using remote sensing, a new thermal inertia model is proposed in this paper. The improved model needs only surface maximum temperature as the temperature parameter input instead of input of the surface temperature difference, as well as the surface sensible and latent fluxes are introduced into boundary conditions of thermal conductivity equation. Furthermore, surface soil conductive heat transfer equation of two-layer model is used to solve the soil thermal inertia so that the remote sensing thermal inertia method can be ap- plied to regions with better-covered vegetation, but usually only for the bare areas or worse vegetation covered areas. The model has been tested at several locations in the area of west Inner Mongolia. Comparing the simulation of the new model with the measurements obtained by apparent thermal inertia and by field test, the result shows that the inertia thermal model can be used to estimate soil moisture in more reasonable accuracy.

关键词： thermal model, thermal conductivity equation, soil initial, sensible flux, latent flux, two-layer model.

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Study on Green Residential Space Design

IJLAI Transactions on Science and Engineering

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IJLAI Transactions on Science and Engineering 2024年第1期2卷 32-37页

作者： Yu Jiang Shenyang normal university No.253 Huanghe North Street Shenyang 110034China

With the ever-changing nature,green ecology has become an international trend of ***,the green ecological design of residential space has become the main melody of people’s *** always implement the concept of ecological and environmental protection in the design process,attach importance to the ecological effect of residential space,carry out reasonable budget and use of environmentally friendly decorative materials,reduce the waste of materials,save money and save resources at the same time,and protect the *** the same time,people began to put their hopes on the residential space design,which made the green residential space design began to *** the bold exploration and practice of designers,the design of green residential space will be endowed with more distinctive characteristics and unique *** from the concept of green design,this paper explores the method of green space design through typical analysis.

关键词： Green Residential space Haze

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The resonance Rayleigh scattering of the interaction of copper(Ⅱ)-bleomycinA2 with DNA and its analytical application

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Science china Chemistry 2010年第3期53卷 618-624页

作者： LIU JiangTao1,LIU ShaoPu2 & LIU ZhongFang2 1school of Chemistry,Chongqing normal university,Chongqing 400300,china 2school of Chemistry and Chemical Engineering,southwest university,Chongqing 400715,china school of Chemistry Chongqing Normal University Chongqing China school of Chemistry and Chemical Engineering Southwest University Chongqing China

The forming of bleomycinA2-Cu(Ⅱ) cationic chelate and the interaction of the chelate with DNA have been investigated by using resonance Rayleigh scattering(RRS),molecular absorption and fluorescence *** result shows that in aqueous solution,bleomycinA2(BLMA2) can react with Cu(Ⅱ) to form 1:1 cationic chelate which contributes to the changes of the absorption spectra and the quenched fluorescence of *** the cationic chelate further bound with DNA to form ternary ion-association complexes,the remarkable enhancement of the RRS intensity was *** this work,the optimum conditions for the coordination reaction of BLMA2 with Cu(Ⅱ) and some influencing factors have been *** reaction mechanism of BLMA2-Cu(Ⅱ) binding with DNA was suggested and a binding model was *** addition,the fluorescence quenching type of BLMA2 was investigated.A highly sensitive,simple and rapid new method for the determination of DNA by using BLMA2-Cu(Ⅱ) as RRS probe has been *** detection limits(3σ) are 7.2 ng/mL for ctDNA,7.1 ng/mL for sDNA and 18 ng/mL for *** method can be applied to the determination of trace amounts of DNA.

关键词： bleomycinA2 Cu(Ⅱ) DNA resonance Rayleigh scattering fluorescence quenching

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Efficient CRT-based residue-to-binary converter for the arbitrary moduli set

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Science china(Information sciences) 2011年第1期54卷 70-78页

作者： CHEN JianWen & YAO RuoHe school of Electronic and Information Engineering,south china university of Technology, guangzhou 510640,china 1. school of Electronic and Information Engineering South China University of Technology Guangzhou 510640 China

The conversion from residue to weighted binary representation plays an important role in the residue number *** on Chinese Remainder Theorem,a new residue-to-binary converter using arbitrary moduli set is *** new converter uses the difference-correction algorithm for the conversion output and eliminates the modulo M operation,where M is the dynamic range of the residue number *** sizes of the multipliers and modular multipliers in the new converter are small,thereby reducing the area and delay of the proposed *** and synthesis results indicate that the new converter is more area-time effcient than the published converters based on Chinese Remainder Theorem.

关键词： RNS Chinese Remainder Theorem difference correction modular arithmetic residue-to-binary arbitrary moduli set

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Entropy number and non-linear approximations on multivariate Besov space by manifolds of finite pseudo-dimension

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Progress in Natural Science:Materials International 2006年第3期16卷 260-265页

作者： LONG Jingfan and FANG Gensun (school of mathematical sciences, Beijing normal university, Beijing 100875, china Department of Computer Science, Information Technology Institute, Beijing 100101, china) [a]school of mathematical sciences Beijing Normal University Beijing China [b]Department of Computer Science Information Technology Institute Beijing China

We determine the asymptotic order of entropy number and optimal non -linear approximations of anisotropic periodic Besov class of Bpθr(Td') (1≤p≤∞,1≤0≤∞) by manifolds of finite pseudo-dimension in the metric Lq... 详细信息

关键词： Pseudo-dimension anisotropic Besov class of functions entropy number nonlinear width.

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Moment bounds for IID sequences under sublinear expectations

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Science china Mathematics 2011年第10期54卷 2155-2160页

作者： HU Feng1,2 1Department of Mathematics,Qufu normal university,Qufu 273165,china 2school of Mathematics,Shandong university,Jinan 250100,china 1. Department of Mathematics Qufu Normal University Qufu 273165 China2. School of Mathematics Shandong University Jinan 250100 China

With the notion of independent identically distributed(IID) random variables under sublinear expectations introduced by Peng,we investigate moment bounds for IID sequences under sublinear expectations. We obtain a moment inequality for a sequence of IID random variables under sublinear expectations. As an application of this inequality,we get the following result:For any continuous functionsatisfying the growth condition |(x) | C(1 + |x|p) for some C > 0,p 1 depending on ,the central limit theorem under sublinear expectations obtained by Peng still holds.

关键词： moment bound sublinear expectation IID random variables G-normal distribution central limit theorem

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Representation of Congruences on Regular Semigroups with Inverse Transversals

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Acta Mathematica Sinica,English Series 1999年第3期15卷 347-352页

作者： Limin Wang Xilin Tang Department of Mathematics, south china normal university, guangzhou 510631, P. R. china Department of Mathematics, guangzhou Teacher’s College, guangzhou 510400, P. R. china Department of Mathematics South China Normal University Guangzhou P. R. China Department of Mathematics Guangzhou Teacher’s College Guangzhou P.R. China

For a regular semigroup with an inverse transversal, we have Saito’s structure W(I, S°, Λ, *, α,β). We represent congruences on this kind of semigroups by the so-called congruence assemblage which consist of congruences on the structure component parts I, S° and Λ. The structure of images of this type of semigroups is also presented.

关键词： Inverse transversal Congruence Congruence assemblage

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normality and shared values concerning differential polynomials

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Science china Mathematics 2010年第3期53卷 749-754页

作者： LEI ChunLin 1 & FANG MingLiang 2, 1 Department of Applied Mathematics, south china Agricultural university, guangzhou 510642, china 2 Institute of Applied Mathematics, south china Agricultural university, guangzhou 510642, china 1. Department of Applied Mathematics South China Agricultural University Guangzhou 510642 China2. Institute of Applied Mathematics South China Agricultural University Guangzhou 510642 China

Let F be a family of functions meromorphic in a domain D, let P be a polynomial with either deg P≥3 or deg P = 2 and P having only one distinct zero, and let b be a finite nonzero complex number. If, each pair of fun... 详细信息

关键词： meromorphic function normality shared value

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