L'aplicació de proves d'operativitat i d'abstracció en afàsics. ' La aplicación de pruebas de operatividad y de abstracción en afásicos'.

Intentar un refinamiento del diagnóstico clínico en neuropsicología y hacer un análisis cuantitativo de los problemas intelectivos del lesionado cerebral para estudiar las posibilidades de reestructuración de las funciones alteradas.. 36 afásicos que acuden a la sección de neuropsicología de Hospital de San Pablo de Barcelona.. El autor presenta la base teórica donde se basa la investigación: definiciones relacionadas con la afasia, pruebas de rendimiento intelectivo, la inteligencia según Piaget, pensamiento y lenguaje, lesiones cerebrales e inteligencia, diferencias interhemisféricas en rendimientos en pruebas intelectivas y funciones intelectivas en el afásico. Selecciona tres pruebas de lógica elemental ideadas por Piaget para el estudio de la génesis de la inteligencia.. Pruebas de operatividad de Piaget e Inhelder (1972). Pruebas de la bateria del test de Goldstein-Scheerer (1945). Prueba de formación de conceptos de Hanffmann-Kasanin (1952).. Análisis cualitativo.. En el afásico se muestra una afectación de la lógica elemental, que aumenta con la complejidad de las pruebas. La prueba de la doble seriación y la de análisis combinatorio son útiles para la exploración de la lógica de los afásicos. La mayoría de los afásicos tienen la abstracción alterada. Las dificultades máximas están en pruebas de clasificaciones activas que impliquen un criterio conceptual previo.. Los resultados evidencian alteraciones intelectuales en la afasia. Las variables clínicas colaterales: edad, nivel sociocultural y tiempo transcurrido desde el AVC, influyen en el rendimiento intelectivo. Los resultados han sido semejantes para todo tipo de afasias. Las tres pruebas piagetianas están gerarquizadas y se muestran afectadas en orden inverso a la evolución del niño. Se propone la utilización de las pruebas de lógica y abstracción para suplir las importantes limitaciones de la psicometria clásica en el campo de la neuropsicología..

Elaboració d'una batería de proves d'avaluació dels aprenentatges de llengua catalana i castellana adquirits pels alumnes que acaben el segon curs d'EGB. 'Elaboración de una batería de pruebas de evaluación de los aprendizajes de lengua catalana y castellana adquiridos por los alumnos que terminan el segundo curso de EGB'.

Ofrecer la elaboración de instrumentos de evaluación diagnóstica de los aprendizajes de lengua catalana y castellana adquiridos por los alumnos que acaban el primer ciclo de EGB. Ofrecer una recopilación de instrumentos de evaluacion de éstas áreas existentes en España. Analizar libros de texto de Lenguaje de ciclo inicial. La muestra está compuesta por 231 sujetos estratificados según la Lengua con que se enseña en la escuela (catalán o castellano) y la clase social (alta o media-alta, media, media-baja y baja). Documentación teórica de cada área del aprendizaje de Lengua. Análisis y recopilación de los instrumentos que existen en el mercado o elaborados en otras investigaciones. Análisis de los objetivos terminales del ciclo inicial. Estudio de los libros de texto sobre Lenguaje en el ciclo inicial. Elaboración, aplicación, análisis y reestructuración de las pruebas en Catalán y Castellano. Análisis de la población escolar y muestreo. Aplicación experimental y elaboración de resultados. Se ha trabajado con 72 variables del área de Lenguaje. Aplicación de una batería de tests. Para el estudio de la batería confeccionada: análisis descriptivo, aplicación del método de consistencia interna de Kuder-Richardson, análisis de los ítems, análisis de contenido, análisis de la validez, estudio correlacional, estudio factorial. No se debería dar una nota única evaluativa en cuanto a la comprensión escrita. Oraciones complejas, pronombres, cantidad de palabras, preposiciones y oraciones simples son las variables que deberían tenerse más en cuenta en la evaluación de la expresión oral en esta etapa. Las 5.012 correlaciones halladas permiten constatar asociaciones posibles que abren caminos a nuevas investigaciones. Con respecto a la variable expresión escrita se prevé una próxima investigación.

Museu d'automòbils Claret. 'Museo de automóviles Claret'.

Resumen del vídeo en catalán

El talento psicomotor y las mujeres en el deporte de alta competici??n

Resumen del autor. Resumen en castellano e ingl??s. Este art??culo se incluye en el monogr??fico 'Educaci??n y Deporte'

Una guia per a l'an??lisi de proves d'avaluaci?? des de la perspectiva PISA

Resumen basado en el de la publicaci??n

Proves de càrrega al claustre de la catedral de Girona

El projecte tracta de la realització de proves de càrrega al Claustre de la Catedral de Girona per tal de conèixer la càrrega que suporten les columnes de pedra del claustre. Un cop coneguda aquesta càrrega, es podrà decidir si son aptes o no per al canvi d’ús previst a la planta superior i es podrà aportar una resposta definitiva a una de les dues hipòtesis plantejades: si es forma o no arc de descàrrega a les columnes del Claustre. D’altre banda, es realitzarà una proposta de tractament de les columnes del Claustre que consistirà a escollir les que hauran de ser reparades i les que hauran de ser substituïdes, en base a una sèrie de càlculs numèrics

I. An exposition of the symbolic terms of the second part of Faust. II. How this part thus proves itself to be a dramatic treatment of the modern history of Germany worthy of the genius of Goethe and the life he devoted to the task. (The prologues and first act completely explained; the other acts generally).

Mode of access: Internet.

Evidences Of Endocytosis Via Caveolae Following Blood-brain Barrier Breakdown By Phoneutria Nigriventer Spider Venom.

Spider venoms contain neurotoxic peptides aimed at paralyzing prey or for defense against predators; that is why they represent valuable tools for studies in neuroscience field. The present study aimed at identifying the process of internalization that occurs during the increased trafficking of vesicles caused by Phoneutria nigriventer spider venom (PNV)-induced blood-brain barrier (BBB) breakdown. Herein, we found that caveolin-1α is up-regulated in the cerebellar capillaries and Purkinje neurons of PNV-administered P14 (neonate) and 8- to 10-week-old (adult) rats. The white matter and granular layers were regions where caveolin-1α showed major upregulation. The variable age played a role in this effect. Caveolin-1 is the central protein that controls caveolae formation. Caveolar-specialized cholesterol- and sphingolipid-rich membrane sub-domains are involved in endocytosis, transcytosis, mechano-sensing, synapse formation and stabilization, signal transduction, intercellular communication, apoptosis, and various signaling events, including those related to calcium handling. PNV is extremely rich in neurotoxic peptides that affect glutamate handling and interferes with ion channels physiology. We suggest that the PNV-induced BBB opening is associated with a high expression of caveolae frame-forming caveolin-1α, and therefore in the process of internalization and enhanced transcytosis. Caveolin-1α up-regulation in Purkinje neurons could be related to a way of neurons to preserve, restore, and enhance function following PNV-induced excitotoxicity. The findings disclose interesting perspectives for further molecular studies of the interaction between PNV and caveolar specialized membrane domains. It proves PNV to be excellent tool for studies of transcytosis, the most common form of BBB-enhanced permeability.

Quando o estado joga a favor do privado : as politicas de esporte apos a constituição de 1988

Universidade Estadual de Campinas . Faculdade de Educação Física

Estudo longitudinal da compreensão verbal de crianças usuárias de implante coclear

OBJETIVO: analisar a compreensão verbal de crianças surdas usuárias de implante coclear (IC) por meio de um estudo longitudinal. MÉTODOS: os participantes foram nove crianças surdas usuárias de IC. A idade cronológica das crianças variou entre quatro e oito anos e o tempo de uso do IC foi, em média, 1 ano e 6 meses na 1ª avaliação, 3 anos e 7 meses na 2ª avaliação e 4 anos e 9 meses na 3ª avaliação. As crianças foram avaliadas longitudinalmente por meio da Escala de Compreensão Verbal da RDLS. Os materiais usados foram brinquedos, objetos e figuras. Os dados foram analisados qualitativa e quantitativamente. RESULTADOS: os resultados mostraram que as crianças implantadas obtiveram uma evolução estatisticamente significante em relação às habilidades de linguagem receptiva. CONCLUSÃO: o estudo comprova a efetividade do IC para o desenvolvimento da compreensão verbal.

Photo-fenton degradation of poly(Ethyleneglycol)

Polyethyleneglycol (PEG) was photooxidized in a photo-Fenton system and results compared with the dark reaction. The products were analysed using GPC and HPLC. In the absence of light, PEG samples needed 490 min to reduce their w by 50%, whereas under UV irradiation, only 10 min were necessary. The exponential decay of w with a concomitant increase in polydispersity and number of average chain scission, characterized a random chain scission mechanism. The degradation products of PEG in both systems showed the presence of lower molecular weight products, including smaller ethyleneglycols and formic acid. The mechanism involves consecutive processes, were the larger ethyleneglycols give rise, successively, to smaller ones. This suggests that the mechanism involves successive scissions of the polymer chain. Irradiated samples decomposed faster than those kept in the dark This study proves that the foto-Fenton method associated with UV-light is a good reactant for PEG photodegradation.

Characterization of mitochondrial genotypes in the foundation herd of the Canchim beef cattle breed

The Canchim (5/8 Charolais + 3/8 Zebu) beef cattle breed was developed at Southeast-Embrapa Cattle to take advantage of hybrid vigor and to combine the higher growth rate and beef quality of Charolais with tropical adaptations of Zebu. The development of three lineages (old, new, and crossbred) has increased its genetic basis. The genotypic origin (Bos taurus or Bos indicus) of the mitochondrial DNA (mtDNA) of the Canchim breed was unknown. We characterized the mtDNA genotype of this founder herd by allele-specific polymerase chain reaction. The 173 founder Zebu females (62 Indubrasil, 3 Guzerat, and 108 Nellore) and their 6749 offspring were identified. The frequency of B. indicus mtDNA ranged from 1.15 to 2.05% among the descendants (N = 6404) of each maternal line with available DNA, and among animals that were alive (N = 689) in December 2007 among the three lineages. Though mtDNA characterization can be used to direct animal selection, the low frequency of B. indicus mtDNA impairs the evaluation of its effects on production traits in these animals. The high prevalence of B. taurus mtDNA in Canchim proves that the founder Zebu females from the Indubrasil, Guzerat and Nellore breeds were obtained from crosses of Zebu sires with local B. taurus dams.

Silica-based cationic bilayers as immunoadjuvants

Background: Silica particles cationized by dioctadecyldimethylammonium bromide (DODAB) bilayer were previously described. This work shows the efficiency of these particulates for antigen adsorption and presentation to the immune system and proves the concept that silica-based cationic bilayers exhibit better performance than alum regarding colloid stability and cellular immune responses for vaccine design. Results: Firstly, the silica/DODAB assembly was characterized at 1 mM NaCl, pH 6.3 or 5 mM Tris. HCl, pH 7.4 and 0.1 mg/ml silica over a range of DODAB concentrations (0.001-1 mM) by means of dynamic light scattering for particle sizing and zeta-potential analysis. 0.05 mM DODAB is enough to produce cationic bilayer-covered particles with good colloid stability. Secondly, conditions for maximal adsorption of bovine serum albumin (BSA) or a recombinant, heat-shock protein from Mycobacterium leprae (18 kDa-hsp) onto DODAB-covered or onto bare silica were determined. At maximal antigen adsorption, cellular immune responses in vivo from delayed-type hypersensitivity reactions determined by foot-pad swelling tests (DTH) and cytokines analysis evidenced the superior performance of the silica/DODAB adjuvant as compared to alum or antigens alone whereas humoral response from IgG in serum was equal to the one elicited by alum as adjuvant. Conclusion: Cationized silica is a biocompatible, inexpensive, easily prepared and possibly general immunoadjuvant for antigen presentation which displays higher colloid stability than alum, better performance regarding cellular immune responses and employs very low, micromolar doses of cationic and toxic synthetic lipid.

Deformed Gaussian-orthogonal-ensemble description of small-world networks

The study of spectral behavior of networks has gained enthusiasm over the last few years. In particular, random matrix theory (RMT) concepts have proven to be useful. In discussing transition from regular behavior to fully chaotic behavior it has been found that an extrapolation formula of the Brody type can be used. In the present paper we analyze the regular to chaotic behavior of small world (SW) networks using an extension of the Gaussian orthogonal ensemble. This RMT ensemble, coined the deformed Gaussian orthogonal ensemble (DGOE), supplies a natural foundation of the Brody formula. SW networks follow GOE statistics until a certain range of eigenvalue correlations depending upon the strength of random connections. We show that for these regimes of SW networks where spectral correlations do not follow GOE beyond a certain range, DGOE statistics models the correlations very well. The analysis performed in this paper proves the utility of the DGOE in network physics, as much as it has been useful in other physical systems.

Approximation to density functional theory for the calculation of band gaps of semiconductors

The local-density approximation (LDA) together with the half occupation (transitionstate) is notoriously successful in the calculation of atomic ionization potentials. When it comes to extended systems, such as a semiconductor infinite system, it has been very difficult to find a way to half ionize because the hole tends to be infinitely extended (a Bloch wave). The answer to this problem lies in the LDA formalism itself. One proves that the half occupation is equivalent to introducing the hole self-energy (electrostatic and exchange correlation) into the Schrodinger equation. The argument then becomes simple: The eigenvalue minus the self-energy has to be minimized because the atom has a minimal energy. Then one simply proves that the hole is localized, not infinitely extended, because it must have maximal self-energy. Then one also arrives at an equation similar to the self- interaction correction equation, but corrected for the removal of just 1/2 electron. Applied to the calculation of band gaps and effective masses, we use the self- energy calculated in atoms and attain a precision similar to that of GW, but with the great advantage that it requires no more computational effort than standard LDA.