Spherical Vessels
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Elasto-Plastic Stress Analysis in Rotating Disks and Pressure Vessels Made of Functionally Graded Materials
Abstract A new elastio-plastic stress solution in axisymmetric problems (rotating disk, cylindrical and spherical vessel) is presented. The rotating disk (cylindrical and spherical vessel) was made of a ceramic/metal functionally graded material, i.e. a particle-reinforced composite. It was assumed that the material's plastic deformation follows an isotropic
Lat. Am. j. solids struct.. Publicado em: 2016-05
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2. Morfohistología testicular de Ceratophrys ornata (Bell) (Amphibia, Anura, Ceratophryidae)
This paper describes the morphohistological features of the testes of adult Ceratophrys ornata (Bell, 1843) (n = 5) from a wetland agroecosystem of central Argentina. The testes were processed by routine histological techniques, sectioned at 8 µm. The sheets obtained were stained with hematoxylin-eosin and Masson trichrome. The gonads are paired, yellowish,
Iheringia, Sér. Zool.. Publicado em: 2013-06
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3. Microestructural, histochemistry, and inmunohistochemistry study of the llama´s placenta (Lama guanicoe glama) / Estudo micro-estrutural, histoquímico e imunoistoquímico da placenta de lhama (Lama guanicoe glama)
The placenta of the llama has been described like epitheliochorial, but existent researches dont study in depth microscopic aspects. In order to detail their ultrastructurals characteristics observations were made by light microscopy and scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Samples of nine uteruses between 28 to 36 w
Publicado em: 2005
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4. DETERMINATION OF AN OPTIMAL FORM FOR RADIAL NOZZLES OF SPHERICAL VESSELS / DETERMINAÇÃO DE UMA FORMA ÓTIMA PARA BOCAIS RADIAIS DE VASOS ESFÉRICOS
Neste trabalho, apresenta-se uma nova proposta para forma de bocais radicais de vasos esféricos tal que as tensões de flexão devidas a um carregamento axial sejam as mínimas possíveis. Investigam-se os esforços de flexão oriundos da compatibilização entre o bocal e o vaso utilizando a técnina dos elementos finitos com um elemento curvílineo com tr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/1983
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5. STRESS ANALYSIS OF SPHERICAL SHELLS SUBJECTED TO INTERNAL PRESSURES USING ENERGY METHODS / ANÁLISE DE ESFORÇOS EM CASCAS ESFÉRICAS,SOB PRESSÃO INTERNA, ATRAVÉS DE MÉTODOS DE ENERGIA
Utilizam-se métodos de energia para a análise das resultantes de tensões que surgem em cascas esféricas de pequena espessura, submetidas a pressão interna. A análise é conduzida, aplicando o princípio da Energia Potencial Mínima, primeiramente através do método de Ritz e, logo após, através da descretização do vaso em elementos finitos, aprove
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/1981
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6. Corneal dioptric power after penetrating keratoplasty.
The dioptric power of the cornea (spherical equivalent) was studied in 60 eyes operated on for penetrating keratoplasty. In order to determine the possible influence of (1) the underlying pathology, (2) the presence of neovascularisation, or (3) the size of the graft the sample was divided into four groups, with the following results: group A (keratoconus, s
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7. beta-Amyloid-(1-42) is a major component of cerebrovascular amyloid deposits: implications for the pathology of Alzheimer disease.
Reinvestigation of the chemical structure of beta-amyloid peptide (A beta) deposits in the vascular tissue of Alzheimer disease brains revealed that the 42-residue form A beta-(1-42), rather than the more soluble A beta-(1-40) form, is the predominant peptide. Following removal of the surrounding tissue with SDS and collagenase, A beta was solubilized in for
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8. Accumulation of Acid-Fast Lipochrome Bodies in Glial Cells of the Midbrain Nigral Lesion in Parkinson’s Disease
To confirm or refute the proposed link between nocardiae and Parkinson’s disease (PD), we investigated the presence of acid-fast spherical structures similar to filterable nocardiae at the midbrain nigral lesions of three patients with PD. Many clusters of acid-fast lipochrome bodies were dense around blood vessels in the two patients with Hoehn and Yahr s
American Society for Microbiology.
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9. Multiparticle adhesive dynamics: Hydrodynamic recruitment of rolling leukocytes
The slow rolling motion of leukocytes along the walls of blood vessels mediated by specific receptor-ligand adhesion is important in inflammation and occurs in postcapillary venules over a wide range of wall shear stresses and vessel diameters. The ability of hydrodynamic collisions between cells to induce capture of free-stream leukocytes to a selectin
The National Academy of Sciences.
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10. Detection of neuritic plaques in Alzheimer’s disease by magnetic resonance microscopy
Magnetic resonance microscopy (MRM) theoretically provides the spatial resolution and signal-to-noise ratio needed to resolve neuritic plaques, the neuropathological hallmark of Alzheimer’s disease (AD). Two previously unexplored MR contrast parameters, T2* and diffusion, are tested for plaque-specific contrast to noise. Autopsy specimens from nondemented
The National Academy of Sciences.
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11. Inhibition of astrocyte proliferation and binding to brain tissue of anticardiolipin antibodies purified from lupus serum.
Polyclonal anticardiolipin antibodies purified from pooled serum samples of patients with systemic lupus erythematosus were shown to have inhibitory effects on cultured normal rat brain astrocytes (RBA-1 cells). Anticardiolipin antibodies at concentrations from 50 to 200 micrograms/ml inhibited the [3H]thymidine incorporation of RBA-1 cells in a dose depende