Home OALib Journal OALib PrePrints Submit Ranking News My Lib FAQ About Us Follow Us+
 Title Keywords Abstract Author All

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99 Submit 2016 ( 1 ) 2015 ( 1 ) 2014 ( 5 ) 2013 ( 8 ) Search Results: 1 - 10 of 326 matches for " Arlete Parrilha Sendra " All listed articles are free for downloading (OA Articles)  Page 1 /326 Display every page 5 10 20 Item  Arlete Parrilha Sendra Vértices , 2010, Abstract: A Semiótica está presente em tpdas as áreas e em todos os níveis de conhecimento, ainda que muitos n o saiba, que est o trabalhando com semioses. Daí a necessidade de coreografá-la para que em seu movimento os semioticistas se reconhece am.  Mathematics , 2007, Abstract: We study conchoids to algebraic curve from the perspective of algebraic geometry, analyzing their main algebraic properties. We introduce the formal definition of conchoid of an algebraic curve by means of incidence diagrams. We prove that, with the exception of a circle centered at the focus and taking$d\$ as its radius, the conchoid is an algebraic curve having at most two irreducible components. In addition, we introduce the notions of special and simple components of a conchoid. Moreover we state that, with the exception of lines passing through the focus, the conchoid always has at least one simple component and that, for almost every distance, all the components of the conchoid are simple. We state that, in the reducible case, simple conchoid components are birationally equivalent to the initial curve, and we show how special components can be used to decide whether a given algebraic curve is the conchoid of another curve.
 Mathematics , 2009, Abstract: We study the rationality of the components of the conchoid to an irreducible algebraic affine plane curve, excluding the trivial cases of the isotropic lines, of the lines through the focus and the circle centered at the focus and radius the distance involved in the conchoid. We prove that conchoids having all their components rational can only be generated by rational curves. Moreover, we show that reducible conchoids to rational curves have always their two components rational. In addition, we prove that the rationality of the conchoid component, to a rational curve, does depend on the base curve and on the focus but not on the distance. Also, we provide an algorithm that analyzes the rationality of all the components of the conchoid and, in the affirmative case, parametrizes them. The algorithm only uses a proper parametrization of the base curve and the focus and, hence, does not require the previous computation of the conchoid. As a corollary, we show that the conchoid to the irreducible conics, with conchoid-focus on the conic, are rational and we give parametrizations. In particular we parametrize the {\it Lima\c{c}ons of Pascal}. We also parametrize the conchoids of {\it Nicomedes}. Finally, we show to find the focuses from where the conchoid is rational or with two rational components.
 Arquivos de Neuro-Psiquiatria , 2006, DOI: 10.1590/S0004-282X2006000100014 Abstract: oligodendrogliomas (ol) are neuroepithelial tumors characterized by the presence of uniformly round nuclei with a clear cytoplasm around it. these features can also be seen in central neurocytomas, dnts and clear cell ependymomas. immunohistochemstry with glial and neuronal markers may be helpful in diferential diagnosis. the aim of this study was to determine the glial and neuronal differentiation in 42 specimes of otherwise typical ol using immunohistochemical techniques. ten cases showed anaplastic characteristics. thirty-three samples (78.5%) were positive to gfap with few cells stained in ten cases and many positive cells in six. twelve cases (28.5%) were focally positive to nse and/or synaptophysin showing neuronal differentiation. thirty-four cases (80.9%) expressed s-100. in conclusion, glial proteins may be present focally in ol due to presence of mature reactive astrocytes or transitional forms between astrocytes and oligodendrocytes. focal areas of neuronal differentiation can also be found in typical ol. the widespread staining with neuronal marker suggests central neurocytoma, but this diagnosis should not be done with small amount of tissue.
 Revista da Escola de Enfermagem da USP , 1998, DOI: 10.1590/S0080-62341998000200010 Abstract: this study presents the central supply unit in the hospital taking into consideration organizing aspects related to its dimension, áreas, material and human resources.
 Arlete Silva Revista da Escola de Enfermagem da USP , 1997, DOI: 10.1590/s0080-62341997000200014 Abstract:
 Hilbig Arlete Arquivos de Neuro-Psiquiatria , 2006, Abstract: Os oligodendrogliomas (OL) s o tumores gliais caracterizados histologicamente pela presen a de núcleo redondo e homogêneo com halo claro perinuclear. A diferencia o microscópica desses tumores com neurocitoma central, DNT e algumas vezes com ependimoma de células claras pode ser difícil. O estudo imunoistoquímico com marcadores glial e neuronal tem sido utilizado e pode auxiliar no diagnóstico diferencial. O objetivo do presente estudo foi determinar a diferencia o neuronal e glial por meio de técnica imunoistoquímica utilizando anticorpos de rotina em tumores com características microscópicas de OL. Foram estudados 42 pacientes com idade entre 4 e 60 anos. Dez apresentavam sinais de maior malignidade (anaplásico). Trinta e três casos (78,5%) mostraram positividade para GFAP, sendo em 10 focal e 6 casos com express o intensa. Doze casos (28,5%) apresentaram positividade para NSE e/ou sinaptofisina, demonstrando alguma diferencia o neuronal, principalmente focal. Trinta e quatro casos (80,9%) foram positivos para S-100 e três casos (7,1%) foram positivos focalmente para NeuN. Concluimos que áreas focais de diferencia o neuronal e/ou glial podem estar presente em OL típicos e, portanto, é necessário cautela no diagnóstico diferencial em amostras pequenas de tumor. A positividade difusa para marcadores neuronais deve sugerir o diagnóstico de neurocitoma central.
 Verònica Crespo Sendra Llengua & Literatura , 2010, DOI: 10.2436/l&l.vi.1307 Abstract:
 Joaquín Bosque Sendra Cuadernos Geográficos , 2008, Abstract:
 Joaquín Bosque Sendra Investigaciones Regionales , 2005, Abstract: El desarrollo de la Ciencia de la información geográfica, de la Geocomputación y de una Ciencia social espacialmente integrada ofrece nuevas e interesantes perspectivas para el estudio de los problemas territoriales. En este trabajo se describen estas tres iniciativas y se reflexiona sobre sus posibilidades para integrar las diversas ciencias sociales.
 Page 1 /326 Display every page 5 10 20 Item