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Microwave Irradiation Treatment of Wood Flour and Its Application in PVC-Wood Flour Composites

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Journal of wuhan University of Technology(Materials Science) 2007年第1期22卷 148-152页

作者：胡圣飞陈文 Institute of Materials Science and Engineering Wuhan University of Technology school of Chemical and Environmental Engineering Hubei University of Technology Wuhan 430068China

The technique of microwave irradiation induced free radical bulk- polyaddition reactions in porous wood flour was used to modify wood flour. The behaviors of the modified wood flour under microwave irradiation, such as thermal stability and moisture sorption properties, were studied. A kind of semiinterpenetrating polymer network wood four （Semi-IPN-WF） can be formed through polymerization of MMA in the porous wood flour by microwave irradiation, and the thermal decomposition temperature of the semi-IPN-WF is considerably increased. PVC/Semi-IPN-WF composites were prepared by melt mixing in double rolls, which exhibit improved rheological properties, lower water sorption properties and outstanding mechanical performances.

关键词： microwave irradiation wood flour poly(vinyl chloride) composites

Molecular cloning of growth hormone receptor (GHR) from common carp(Cyprinus carpio L.)and identification of its two forms of mRNA transcripts

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Progress in Natural Science:Materials International 2006年第11期16卷 1156-1163页

作者： SUN Xiaofeng~ 1.2., GUO Qionglin~1.*, HU Wei~1. WANG Yaping~1.and ZHU Zuoyan~1.1. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, {1. 430072. China 2. Graduate {2. of Chinese Academy of Sciences, Beijing 1.0039, China) [a]State key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan China China [b]Graduate school of Chinese Academy of sciences Beijing China

The cDNA of growth hormone receptor (GHR) was cloned from the liver of 2.year common carp (Cyprinus carpio L.) by reverse transcription-polymerase chain reaction (RT-PCR) and rapid amplification of cDNA end (RACE). Its open reading frame (ORF) of 1.06 nucleotides is translated into a putative peptide of 602.amino acids, including an extracellular ligand-binding domain of 2.4 amino acids (aa), a single transmembrane domain of 2. aa and an intracellular signal-transduction domain of 334 aa. Sequence analysis indicated that common carp GHR is highly homologous to goldfish (Carassius auratus) GHR at both gene and protein levels. Using a pair of gene-specific primers, a GHR fragment was amplified from the cDNA of 2.year common carp, a 2.4 bp product was identified in liver and a 32. bp product in other tissues. The sequencing of the products and the partial genomic DNA indicated that the difference in product size was the result of a 97 bp intron that alternatively spliced. In addition, the 32. bp fragment could be amplified from all the tissues of 4-month common carp including liver, demonstrating the occurrence of the alternative splicing of this intron during the development of common carp. Moreover, a semi-quantitative RT-PCR was performed to analyze the expression level of GHR in tissues of 2.year common carp and 4-month common carp. The result revealed that in the tissues of gill, thymus and brain, the expression level of GHR in 2.year common carp was significantly lower than that of 4-month common carp.

关键词： growth hormone receptor (GHR) molecular cloning transcript expression analysis common carp.

Large deviations for Glauber dynamics of continuous gas

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Science China mathematics 2008年第5期51卷 973-986页

作者： SONG QiongXia~(1.2. 1.{1. of Mathematical Sciences,wuhan University,wuhan 430072.China 2.Department of statistics and Probability,Michigan State University,East Lansing,MI4882.,USA school of Mathematical Sciences Wuhan University Wuhan 430072 China Department of statistics Probability Michigan State University East Lansing MI48824 USA

This paper is devoted to the large deviation principles of the Glauber-type dynamics of finite or infinite volume continuous particle systems. We prove that the level-2.empirical process satisfies the large deviation principles in the weak convergence topology, while it does not satisfy the large deviation principles in the τ-topology.

关键词： Gibbs measures Glauber dynamics empirical processes large deviation principles 60J2. 60F1. 82.2. 82.2.

Weak Orlicz space and its applications to the martingale theory

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Science China mathematics 2010年第4期53卷 905-916页

作者： LIU PeiDe,HOU YouLiang & WANG MaoFa school of {1. and {2.,wuhan University,wuhan 430072.China 1. school of {1. and {2. Wuhan University Wuhan 430072 China

In this paper,the weak Orlicz space wL Φ is introduced and its applications to the martingale theory are *** particular,a series of martingale inequalities including the maximal function inequality in weak Orlicz spaces are established;the relationships between these spaces are ***,the boundedness of several sublinear operators from one weak Orlicz space to another is proved;their vector-valued analogues are also considered.

关键词： weak Orlicz space maximal function martingale space martingale inequality

On the Strong Law of Large Numbers for Non-Independent B-Valued Random Variables

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wuhan University Journal of Natural Sciences 2004年第1期9卷 13-17页

作者： GanShi-xin schoolof{1.and{2. WuhanUniversityWuhan430072HubeiChina

This paper investigates some conditions which imply the strong laws of large numbers for Banach space valued random variable sequences. Some generalizations of the Marcinkiewicz-Zygmund theorem and the Hoffmann-J?rgensen and Pisier theorem are obtained. Key words strong law of large numbers - Banach space valued random variable sequence - p-smoothable Banach space CLC number O 2.1.4 - O 2.1.6 Foundation item: Supported by the National Natural Science Foundation of China (1.071.58)Biography: Gan Shi-xin (1.39-), male, Professor, research direction: martingale theory, probability limiting theory and Banach space geometry theory.

关键词： strong law of large numbers Banach space valued random variable sequence p-smoothable Banach space

Hydration Kinetics of Phosphorus Slag-cement Paste

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Journal of wuhan University of Technology(Materials Science) 2011年第1期26卷 142-146页

作者：陈霞 school of Civil Engineering Wuhan University Department of Mateials and Structure Changjiang River Scientific Research lnstitute

Hydration characteristics of Portland cement paste with phosphorus slag powder incorporated and hydration kinetics was investigated with SEM, X-ray diffraction, DTA-TG and calorimeter Ⅱ80. Results showed that phosphorus slag powder could reduce total amount of hydration products yet had little influence on the type of hydration products. The total amount of heat of hydration was decreased by 49.1.% and the final setting was postponed by 2.2. h when phosphorus slag powder substituted 35% Portland cement by mass. The accelerating stage of this composite paste was controlled by catalysis, decreasing stage controlled by both catalysis and diffusion while stabilizing stage by diffusion alone. Hydration resistance and activation energy were reduced and hydration speed was accelerated.

关键词： phosphorus slag hydration kinetics cement micro structure mechanism.

Periodic Solution for Diffusive Predator-Prey System with Functional Response

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wuhan University Journal of Natural Sciences 2002年第3期7卷 267-273页

作者： Li Bi\|wen 1.2., Cheng Jian 1.1. Department of {1., hubei Normal University, Huangshi 435002. hubei,China 2. school of mathematics and statistics, wuhan University, wuhan 430072. hubei,China hubei Normal University Department of Mathematics Huangshi Hubei China (GRID:grid.462271.4) (ISNI:***) wuhan University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) hubei Normal University Department of Mathematics Huangshi Hubei China (GRID:grid.462271.4) (ISNI:***)

In this paper, a three species diffusive predator-prey model with functional response is studied, where all parameters are time dependent. By using the continuation theorem of coincidence degree theory, the existence ... 详细信息

关键词： diffusive model functional nesponse positive periodic solution continuation theorem of coincidence degree fopological degree

Characterization of Type p Banach Spaces by the Weak Law of Large Numbers

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wuhan University Journal of Natural Sciences 2002年第1期7卷 14-19页

作者： Gan Shi-xin school of {1. and {2. Wuhan UniversityWuhan 430072HubeiChina

For weighted sums of the form?j=1.n anj Xnj\sum{_{j=1.^{k_(n)}}a_({nj})X_({nj})where{a_(nj),1.j?k_(n)↑∞,n?1.is a real constant array and{X_(aj),1.j≤k n,n≥1.is a rowwise independent,zero mean,random element array in a real separable Banach space of typep,we establishL r convergence theorem and a general weak law of large numbers respectively,conversely,we characterize Banach spaces of typep in terms of convergence inr-th mean and probability for such weighted sums.

关键词： Banach space of typep array of random elements weighted sums weak law of large numbers {a nj} uniform integrability L r convergence convergence in probability

Consistency of the Estimator of Cumulative Hazard Function in Estimated Pseudo-Partial-Likelihood Approach

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wuhan University Journal of Natural Sciences 2009年第5期14卷 373-377页

作者： LIU Yanyan,YUAN Zhongshang school of {1. and {2.,wuhan University,wuhan 430072.hubei,China school of {1. and {2. Wuhan University Wuhan 430072 Hubei China

For multivariate failure time with auxiliary covariate information, an estimated pseudo-partial-likelihood estimator under the marginal hazard model with distinguishable baseline hazard has been proposed. However, the asymptotic properties of the corresponding estimated cumulative hazard function have not been studied. In this paper, based on counting process martingale, we use the continuous mapping theorem and Lenglart inequality and prove the consistency of the estimated cumulative hazard function in estimated pseudo-partial-likelihood approach.

关键词： cumulative hazard function pseudo-partial-likeli- hood consistency auxiliary covariate multivariate data validation sample