Self Sustaining
Mostrando 13-24 de 38 artigos, teses e dissertações.
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13. ANÁLISE GEOAMBIENTAL COMO SUBSÍDIO AO PLANEJAMENTO TERRITORIAL DO MUNICÍPIO DE MARACANAÚ, CE.
The city of Maracanau, located in the Metropolitan Area of Fortaleza MAF, has gone through strong changes in the past 20 years in respect to its space configuration and environmental conditions, arising from the deliberated instalation of industrial districts and large housing developments. The plan resulted in environmental degradation caused by uncontrolle
Publicado em: 2005
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14. Comparison of two different synthesis methods of perovskites, SrCo0.5FeO3 type, aiming at evaluating their use as membranes for partial oxidation of methane
In this work two different synthesis methods of perovskites, SrCo0.5FeO3, were compared: combustion synthesis and oxides mixture aiming at evaluating their use as membranes for partial oxidation of methane. The combustion synthesis method explores an exothermic, generally very fast and self-sustaining chemical reaction between the desired metal salts and a s
Materials Research. Publicado em: 2004-06
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15. Somos pedras que se consomem em angÃstia: A temÃtica da inquietaÃÃo no diÃlogo entre Graciliano Ramos e Raimundo Carrero
The aim of this work is to investigate, in the light of philosophical existentialism, the presence of the theme of anguish in the intertextual dialogue between Graciliano Ramos and Raimundo Carrero, more specifically in their respective novels AngÃstia and Somos pedras que se consomem, which are representative, par excellence, of the exploitation of this th
Publicado em: 2004
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16. Conditional up-regulation of MHC class I in skeletal muscle leads to self-sustaining autoimmune myositis and myositis-specific autoantibodies
In the human inflammatory myopathies (polymyositis and dermatomyositis), the early, widespread appearance of MHC class I on the surface of muscle cells and the occurrence of certain myositis-specific autoantibodies are striking features. We have used a controllable muscle-specific promoter system to up-regulate MHC class I in the skeletal muscles of young mi
The National Academy of Sciences.
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17. Substructure of the inner core of the Earth.
The rationale is disclosed for a substructure within the Earth's inner core, consisting of an actinide subcore at the center of the Earth, surrounded by a subshell composed of the products of nuclear fission and radioactive decay. Estimates are made as to possible densities, physical dimensions, and chemical compositions. The feasibility for self-sustaining
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18. Can We Build Artificial Stem Cell Compartments?
Animals carry stem cells throughout their entire life, from embryogenesis to senescence. Their function during development and adulthood consists basically of forming and sustaining functional tissues while maintaining a small self-renewing population. They reside in a complex three-dimensional environment consisting of other nearby cells extracellular matri
Hindawi Publishing Corporation.
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19. Translational Mini-Review Series on Immunology of Vascular Disease: Mechanisms of vascular inflammation and remodelling in systemic vasculitis
Vessel walls are the primary inflammatory sites in systemic vasculitides. In most cases the initiating event is unknown, and a self-sustaining circuit attracts and activates inflammatory leucocytes in the wall of vessels of various size and anatomical characteristics. Recent studies have revealed homeostatic roles of vascular inflammation and have identified
Blackwell Science Inc.
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20. Population maintenance among tropical reef fishes: Inferences from small-island endemics
To what extent do local populations of tropical reef fishes persist through the recruitment of pelagic larvae to their natal reef? Endemics from small, isolated islands can help answer that question by indicating whether special biological attributes are needed for long-term survival under enforced localization in high-risk situations. Taxonomically and
The National Academy of Sciences.
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21. Contingent gene regulatory networks and B cell fate specification
The B cell developmental pathway represents a leading system for the analysis of regulatory circuits that orchestrate cell fate specification and commitment. Considerable progress has been achieved within the past decade in the identification and genetic analysis of various regulatory components. These components include the transcription factors PU.1, Ikaro
National Academy of Sciences.
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22. Involvement of Ethylene in Chlorophyll Degradation in Peel of Citrus Fruits 1
The effect of ethylene on chlorophyll degradation in the peel of Robinson tangerine (X Citrus reticulata Blanco) and calamondin (X Citrofortunellamitis [Blanco] Ingram and Moore) fruits was studied. The chlorophyll degrading system in the peel of these two citrus species was not self-sustaining but required ethylene to function. Chlorophyll degradation cease
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23. Sustained vortex-like waves in normal isolated ventricular muscle.
Sustained reentrant excitation may be initiated in small (20 x 20 x less than 0.6 mm) preparations of normal ventricular muscle. A single appropriately timed premature electrical stimulus applied perpendicularly to the wake of a propagating quasiplanar wavefront gives rise to circulation of self-sustaining excitation waves, which pivot at high frequency (5-7
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24. Studies of Enzyme Polymorphisms in the Kamuela Population of D. MERCATORUM. I. Estimation of the Level of Polymorphism
A Kamuela, Hawaii, population of Drosophila mercatorum was surveyed for enzyme variability. The mean heterozygosity and the proportion of polymorphic loci were estimated as 0.1255 and 0.37, respectively. Neither deviates more than one standard error from their respective means for 43 Drosophila species (Nevo 1978). Heterozygosity was distributed across enzym