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  • Open Access

    ARTICLE

    Cloning and analysis of IFRG (interferon responsive gene) in rabbit oocytes and preimplantation embryos

    BING QI1, XINMING ZHENG2, WENYONG LI3, QINGXIN WEI2, QINGXUAN CHEN1

    BIOCELL, Vol.31, No.2, pp. 199-203, 2007, DOI:10.32604/biocell.2007.31.199

    Abstract Although there is more evidence that shows that IFNs (interferons) plays a very important role in the early development of the embryo, the mechanism of IFNs is still unclear. Our study showed that IFRG is expressed from oocytes- through to the preimplantation embryo in rabbits. This finding provides some clues for better understanding the role of IFNs in the development of the embryo. The full length of rabbit IFRG cDNA (Accession No. AJ584672), with a 2794bp encoding 131 amino acid sequence, was cloned IFRG expression can be detected in 8 different tissues: ovary, heart, lung, More >

  • Open Access

    ARTICLE

    Localization of Sweet potato chlorotic stunt virus (SPCSV) in synergic infection with Potyviruses in sweet potato

    CLAUDIA FERNANDA NOME1 , SERGIO FERNANDO NOME2 , FABIANA GUZMÁN1 , LUIS CONCI1, IRMA GRACIELA LAGUNA1,2

    BIOCELL, Vol.31, No.1, pp. 23-31, 2007, DOI:10.32604/biocell.2007.31.023

    Abstract Among diseases reported worldwidely for sweet potato (Ipomoea batatas (L) Lam) crop, one of the most frequent is the Sweet potato virus disease (SPVD), caused by sweet potato chlorotic stunt virus (SPCSV) and sweet potato feathery mottle virus (SPFMV) co-infection. In Argentina, there exists the sweet potato chlorotic dwarf (SPCD), a sweet potato disease caused by triple co-infection with SPCSV, SPFMV and sweet potato mild speckling virus(SPMSV). Both diseases cause a synergism between the potyviruses(SPFMV and SPMSV) and the crinivirus (SPCSV). Up to date, studies carried out on the interaction among these three viruses have… More >

  • Open Access

    ABSTRACT

    HYBRID a powerful Boundary Element-Finite Element Method(BEM/FEM) software for analysis of seismic response of multiphase porous media

    B. Gatmiri1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.4, No.3, pp. 159-166, 2007, DOI:10.3970/icces.2007.004.159

    Abstract This document summarizes the basic concepts and steps of establishment of the set of equations of wave propoagation in far field and of the dynamic behaviour of porous media in the near field. A breif description of HYBRID software as a powerful tool for evaluation of local seismic site effect is presented. The Combination of the FEM and BEM and improvement of numerical algorithm for the time truncation are described. More >

  • Open Access

    ABSTRACT

    A four-node hybrid assumed-strain finite element for laminated composite plates

    A. Cazzani1, E. Garusi2, A. Tralli3, S.N. Atluri4

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.4, No.2, pp. 93-122, 2007, DOI:10.3970/icces.2007.004.093

    Abstract Fibre-reinforced plates and shells are finding an increasing interest in engineering applications. Consequently, efficient and robust computational tools are required for the analysis of such structural models. As a matter of fact, a large amount of laminate finite elements have been developed and incorporated in most commercial codes for structural analysis. In this paper a new laminate hybrid assumed-strain plate element is derived within the framework of the First-order Shear Deformation Theory (i.e. assuming that particles of the plate originally lying along a straight line which is normal to the undeformed middle surface remain aligned… More >

  • Open Access

    ARTICLE

    A Hybrid Laplace Transform/Finite Difference Boundary Element Method for Diffusion Problems

    A. J. Davies1, D. Crann1, S. J. Kane1, C-H. Lai2

    CMES-Computer Modeling in Engineering & Sciences, Vol.18, No.2, pp. 79-86, 2007, DOI:10.3970/cmes.2007.018.079

    Abstract The solution process for diffusion problems usually involves the time development separately from the space solution. A finite difference algorithm in time requires a sequential time development in which all previous values must be determined prior to the current value. The Stehfest Laplace transform algorithm, however, allows time solutions without the knowledge of prior values. It is of interest to be able to develop a time-domain decomposition suitable for implementation in a parallel environment. One such possibility is to use the Laplace transform to develop coarse-grained solutions which act as the initial values for a More >

  • Open Access

    ARTICLE

    Synaptonemal complexes and XY behavior in two species of argentinian armadillos: Chaetophractus villosus and Dasypus hybridus (Xenarthra, Dasypodidae)

    R. B. SCIURANO, M.S. MERANI, JIMENA BUSTOS, A.J. SOLARI

    BIOCELL, Vol.30, No.1, pp. 57-66, 2006, DOI:10.32604/biocell.2006.30.057

    Abstract Spermatocytes from the two armadillo species, C. villosus and D. hybridus were studied in microspreads for synaptonemal complexes (SCs) and in thin sections for electron microscopy (EM). The complete SC karyotype generally agrees with previous reports on mitotic chromosomes, except for the sex chromosomes. The X chromosome is submetacentric in both species and the Y is the shortest one in C. villosus and the second shortest in D. hybridus, and an extremely acrocentric one. A SC is formed along the total length of the Y chromosome, and this SC persists along all the pachytene substages. A single recombination nodule… More >

  • Open Access

    ARTICLE

    Visualization of the ribosomal DNA (45S rDNA) of Indica rice with FISH on some phases of cell cycle and extended DNA fibers

    ZONG-YUN LI1,2*, MEI-LI FU1, FANG-FANG HU1, SHU-FENG HUANG1, YUN-CHUN SONG2

    BIOCELL, Vol.30, No.1, pp. 27-32, 2006, DOI:10.32604/biocell.2006.30.027

    Abstract The ribosomal DNA (45S rDNA) behaviors during the cell cycle were analyzed on interphase nuclei, prophases, metaphases, pachytene chromosomes and extended DNA fibers in rice (Oryza,sativa ssp.indica cv.Guangluai No.4) by using high-resolution fluorescent in situ hybridization (FISH). The results show that 45S rDNA is located at the ends of short arms of chromosomes 9 and 10. But the signals are much more intense on chromosome 9 than on chromosome 10 in metaphase. Pachytene chromosome has rDNA signal arrays on chromosome 9. Different phases are described and discussed. These results indicate that the activity of rDNA at individual More >

  • Open Access

    ARTICLE

    The Effects of Cyclic Strains on the Hybrid Aligned Nanofibrous Scaffold Seeded with Smooth Muscle Cells

    J. W. Shin1,3, Y. J. Kim2, J. H. Kim1, Y. J. Lee3, S. J. Heo3, Y. M. Hwang1,3, D. H. Kim1,3, J. W. Shin1,3*

    Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 223-224, 2006, DOI:10.32604/mcb.2006.003.223

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    The Application of a Hybrid Inverse Boundary Element Problem Engine for the Solution of Potential Problems

    S. Noroozi1, P. Sewell1, J. Vinney1

    CMES-Computer Modeling in Engineering & Sciences, Vol.14, No.3, pp. 171-180, 2006, DOI:10.3970/cmes.2006.014.171

    Abstract A method that combines a modified back propagation Artificial Neural Network (ANN) and Boundary Element Analysis (BEA) was introduced and discussed in the author's previous papers. This paper discusses the development of an automated inverse boundary element problem engine. This inverse problem engine can be applied to both potential and elastostatic problems.
    In this study, BEA solutions of a two-dimensional potential problem is utilised to test the system and to train a back propagation Artificial Neural Network (ANN). Once training is completed and the transfer function is created, the solution to any subsequent or new… More >

  • Open Access

    ARTICLE

    A Hybrid FEM/BEM Approach for Designing an Aircraft Engine Structural Health Monitoring

    S.C. Forth1, A. Staroselsky2

    CMES-Computer Modeling in Engineering & Sciences, Vol.9, No.3, pp. 287-298, 2005, DOI:10.3970/cmes.2005.009.287

    Abstract A new hybrid surface-integral-finite-element numerical scheme has been developed to model a three-dimensional crack propagating through a thin, multi-layered coating. The finite element method was used to model the physical state of the coating, and the surface integral method was used to model the fatigue crack growth. The two formulations are coupled through the need to satisfy boundary conditions on the crack and external surface. The coupling is sufficiently weak that the surface integral mesh of the crack surface and the finite element mesh of the uncracked volume can be set up independently. Thus, when More >

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