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  • Open Access

    REVIEW

    Review: Mitochondrial apoptotic pathways

    NORA MOHAMAD, ALICIA GUTIÉRREZ, MARIEL NÚÑEZ, CLAUDIA COCCA, GABRIELA MARTÍN*, GRACIELA CRICCO, VANINA MEDINA, ELENA RIVERA, ROSA BERGOC*.

    BIOCELL, Vol.29, No.2, pp. 149-161, 2005, DOI:10.32604/biocell.2005.29.149

    Abstract Apoptosis or programmed cell death (PCD) is a physiological process characteristic of pluricellular organisms leading to self-destruction of the cell. It is therefore involved in development, homeostasis and host defense. However, a significant difference has been shown between mammalian cell apoptosis and non-mammalian cell apoptosis: mitochondria are implicated only in the former. Execution of PCD includes the release of several proapoptotic proteins from the intermembrane space of mitochondria. They could exert their actions through a caspase dependent as well as a caspase independent way. On the other hand, regulation of PCD is mainly given by More >

  • Open Access

    ARTICLE

    Coalescence and Non-coalescence Phenomena in Multi-material Problems and Dispersed Multiphase Flows: Part 2, A Critical Review of CFD Approaches

    Marcello Lappa1

    FDMP-Fluid Dynamics & Materials Processing, Vol.1, No.3, pp. 213-234, 2005, DOI:10.3970/fdmp.2005.001.213

    Abstract The physical properties of many emulsions and metal alloys strongly depend on the multiphase morphology which is controlled to a great degree by particle-particle interaction during the related processing. In the present article significant effort is devoted to illustrate the philosophy of modeling for these phenomena and some insights into the physics. Within such a context working numerical techniques that have enjoyed a widespread use over recent years are presented and/or reviewed. Finally a focused and critical comparison of these possible approaches is reported illustrating advantages and disadvantages, strengths and weaknesses, past history and future More >

  • Open Access

    ARTICLE

    Coalescence and Non-coalescence Phenomena in Multi-material Problems and Dispersed Multiphase Flows: Part 1, A Critical Review of Theories

    Marcello Lappa1

    FDMP-Fluid Dynamics & Materials Processing, Vol.1, No.3, pp. 201-212, 2005, DOI:10.3970/fdmp.2005.001.201

    Abstract The manuscript deals with a presentation of the most reliable theories introduced over the years to model particle coalescence and non-coalescence phenomena at both macroscopic and microscopic length scales (including historical developments and very recent contributions) and moves through other macrophysical mechanisms that can cause spatial separation of the fluid phases (liquid-liquid or liquid-gas) in multi-material problems, while providing a rigorous theoretical framework for deeper understanding of how drop (or bubble) migration due to gravity and/or Marangoni effects can interact cooperatively with coalescence to significantly affect the multiphase pattern formation, its evolutionary progress as well More >

  • Open Access

    ARTICLE

    Review: Possible strategies for the control and stabilization of Marangoni flow in laterally heated floating zones

    Marcello Lappa1

    FDMP-Fluid Dynamics & Materials Processing, Vol.1, No.2, pp. 171-188, 2005, DOI:10.3970/fdmp.2005.001.171

    Abstract The paper presents a comparative and critical analysis of some theoretical/experimental/numerical arguments concerning the possible stabilization of the surface-tension-driven (Marangoni) flow in the Floating Zone technique and in various related fluid-dynamic models. It is conceived as a natural extension of the focused overview published in Cryst. Res. Tech. 40(6), 531, (2005) where much room was devoted to discuss the intrinsic physical mechanisms responsible for three-dimensional and oscillatory flows in a variety of technological processes. Here, a significant effort is provided to illustrate the genesis of possible control strategies (many of which are still in a More >

  • Open Access

    REVIEW

    Review : Uterine mast cells: A new hypothesis to understand how we are born

    M. ISOLDE RUDOLPH1, I. GINA ROJAS2, ALICIA B. PENISSI3

    BIOCELL, Vol.28, No.1, pp. 1-11, 2004, DOI:10.32604/biocell.2004.28.001

    Abstract Birth is the result of complex, well-defined, and coordinated events, that are tightly regulated by endocrine, nervous, and immune responses, and take place primarily in the female reproductive tract. Various mechanisms and mediators involved in pregnancy, labor, and delivery, are highly conserved among different mammalian species and mast cells emerge as potential and crucial participants in these processes, as it is discussed in this review. More >

  • Open Access

    ARTICLE

    Review of Large Scale Computing in Electromagnetics with Fast Integral Equation Solvers

    W.C. Chew1, J.M. Song1, T.J. Cui1, S. Velamparambil1, M.L. Hastriter1, B. Hu1

    CMES-Computer Modeling in Engineering & Sciences, Vol.5, No.4, pp. 361-372, 2004, DOI:10.3970/cmes.2004.005.361

    Abstract This paper reviews recent advances in large-scale computational electromagnetics using frequency domain integral equations. It gives a brief history of methods to solve Maxwell's equations, followed by a description of various historical ages in solution technique developments. Then it describes computational electromagnetics followed by a brief description of how fast integral equation solvers such as the multilevel fast multipole algorithm (MLFMA) is constructed using the tree network. Some examples of large scale computing using MLFMA are given. Ray physics used to further accelerate the speed of MLFMA. The parallel implementation of MLFMA in a code More >

  • Open Access

    REVIEW

    Review : Role of mast cells in gastrointestinal mucosal defense

    Alicia B. Penissi*, María I. Rudolph**, Ramón S. Piezzi*

    BIOCELL, Vol.27, No.2, pp. 163-172, 2003, DOI:10.32604/biocell.2003.27.163

    Abstract The purpose of this review, based on studies from our laboratory as well as from others, is to summarize salient features of mast cell immunobiology and to describe their associations with gastrointestinal mucosal defense. Gastrointestinal mast cells are involved in many pathologic effects, such as food hypersensitivity. On the other hand, they also play a protective role in defense against parasitic and microbial infections. Thus, they have both positive and negative effects, but presently the mechanisms that control the balance of these various effects are poorly known. It has been suggested that stabilization of mast… More >

  • Open Access

    ABSTRACT

    Minireview: Pigmented corpuscles in the midgut gland of Pomacea canaliculata and other Neotropical apple-snails (Prosobranchia, Ampullariidae): A possible symbiotic association

    A. Castro-Vazquez, E.A. Albrecht, I.A. Vega, E. Koch, C. Gamarra-Luques

    BIOCELL, Vol.26, Suppl.S, pp. 101-109, 2002

    Abstract This article has no abstract. More >

  • Open Access

    REVIEW

    Review : Reticulocyte maturation: mitoptosis and exosome release

    CHARLES GÉMINARD, AUDE DE GASSART, MICHEL VIDAL

    BIOCELL, Vol.26, No.2, pp. 205-215, 2002, DOI:10.32604/biocell.2002.26.205

    Abstract During the differentiation of erythroid cells, a vast program of maturation takes place, leading to decay or elimination of organelles, including the nucleus, mitochondria, ribosomes, lysosomes, endoplasmic reticulum and Golgi apparatus. During the last step of red cell maturation, remaining organelles, primarily mitochondria and ribosomes but also vestiges of others are finally cleared from the cell. This cleaning session also affects specific proteins that are partially or entirely removed from the cell surface. The interplay of the various events and their causal relationships are approached here. More >

  • Open Access

    ABSTRACT

    Minireview: Lipoproteins from plasma and perivelline fluid of the apple snail Pomacea canaliculata

    H. Heras, R.J. Pollero

    BIOCELL, Vol.26, Suppl.S, pp. 111-118, 2002

    Abstract This article has no abstract. More >

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