984 resultados para 520
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RESUMO: Quando se fala em inclusão escolar torna-se primordial estudar as interacções que se estabelecem entre os alunos numa sala de aula, sendo essencial que estes tenham atitudes positivas nessas interacções (Roldão, 2007). Estas atitudes não aparecem subitamente numa criança, pelo que as atitudes demonstradas pelas escolas, pelos professores e pelos pais, são factores que influenciam as atitudes dos alunos perante os seus pares com deficiência. Objectivo: O presente estudo pretende analisar as atitudes dos alunos ditos “normais” face à inclusão dos seus pares com deficiência nas aulas de Educação Física, verificando se estas atitudes variam consoante o ciclo de escolaridade. Método: Participaram neste estudo 520 alunos que frequentam o 2º ciclo, 3º ciclo e secundário, com idades compreendidas entre os 10 e os 20 anos. O instrumento utilizado foi o questionário AID – EF (Leitão, 2011), para análise das atitudes dos alunos face à inclusão de alunos com deficiência nas suas aulas de Educação Física (EF). Resultados: Na globalidade, as atitudes dos alunos ditos “normais” face à inclusão dos seus pares deficientes nas aulas de EF, não variam consoante no ciclo de escolaridade (p=0,074). Ainda assim, nas seguintes variáveis verificou-se que: o grupo de alunos que frequenta o secundário manifesta significativamente atitudes mais positivas face aos inconvenientes da inclusão, em relação aos outros ciclos de escolaridade (p<0,001); quanto às atitudes dos alunos face à inter-ajuda / cooperação entre alunos com e sem deficiência, constatou-se que os alunos do secundário apresentam significativamente atitudes mais positivas (p<0,001); no que respeita às percepções dos alunos face às atitudes dos professores em relação à inclusão, verificou-se que existem diferenças significativas nos três ciclos de escolaridade, sendo que o 2º ciclo apresenta atitudes mais positivas, seguido do 3º ciclo e por fim o secundário (p<0,001); verificou-se ainda, que os alunos do 2º ciclo apresentam significativamente atitudes menos positivas face às atitudes que os seus pais têm em relação à inclusão de alunos com deficiência nas aulas de EF (p=0,002). Conclusões: Este estudo revela que na generalidade os alunos têm tendência para demonstrar atitudes positivas em relação à inclusão de alunos com deficiência nas aulas de EF, contudo ainda longe do esperado e desejado, sendo urgente e necessário que ocorra uma revolução de valores e atitudes na comunidade escolar.ABSTRACT: When it comes to school inclusion it becomes essential to study the interactions that take place among students in a classroom, it is essential that they have positive attitudes in these interactions (Roldão, 2007). These attitudes do not appear suddenly in a child, so the attitudes demonstrated by schools, teachers and parents, are factors that influence the attitudes of students towards peers with disabilities. Objective: This study aims to analyze the attitudes of students said "normal" face to the inclusion of peers with disabilities in physical education classes, ensuring that these attitudes vary according to the school cycle. Method: This study is based on 520 students that attend the 2nd cycle, 3rd cycle and secondary, ages between 10 and 20 years old. The instrument used was a questionnaire AID - EF (Leitão, 2011), to analyze the students attitudes towards the inclusion of students with disabilities in their physical education classes (EF). Results: Overall, the attitudes of students said "normal" face to the inclusion of peers with disabilities in PE classes, do not vary depending on the cycle of education (p = 0.074). Still, the following variables showed that: the group of students attending secondary, manifested significantly more positive attitudes to the disadvantages of including, in relation to other cycles of education (p <0.001). As for the attitudes of students towards interSupport / cooperation between students with and without disabilities, it was found that secondary school students have significantly more positive attitudes (p <0.001), with regard to students perceptions in relation to teachers attitudes regarding inclusion, it was found that there are significant differences in the three cycles of education, 2nd cycle students present more positive attitudes, followed by 3th cycle students and then secondary students (p <0.001)it was also found that students from the 2nd cycle have significantly less positive attitudes compared with those of their parents have in relation to the inclusion of students with disabilities in PE classes ( p = 0.002). Conclusions: This study shows that in general students tend to show positive attitudes towards the inclusion of students with disabilities in PE classes, but is still far from the expected and desired, it is urgent and necessary that we have a revolution of values and attitudes in school community.
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This paper examines the relationship between speech discrimination ability and vowel map accuracy and vowel map size.
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La obra narrativa de Borges está estrechamente unida a una gran variedad de textos que Borges leyó e interiorizó a lo largo de su vida. Entre esos textos, los clásicos grecolatinos ocupan un lugar muy importante. El propósito de esta investigación es determinar qué motivos clásicos grecolatinos se desarrollan en la narrativa de Jorge Luis Borges, qué proceso transtextual eligió y qué consiguió con ello. La lectura exhaustiva de sus cuentos, que en su mayoría se encuentran brevemente resumidos y anexados a esta investigación, permitirá determinar que Borges eligió varios motivos clásicos para su trabajo creativo, pero en especial el motivo del laberinto y del eterno retorno. La aplicación de la teoría transtextual de Gerard Genette, permitirá comparar varios textos clásicos con algunos de los cuentos de Borges y concluir en que el autor transformó los motivos clásicos en forma seria, creando una relación de transposición entre los hipotextos y los hipertextos. Luego, aplicando la deconstrucción de Jacques Derrida, se realizará una lectura alegórica de dos cuentos de Borges: La casa de Asterión y Las ruinas circulares que, junto con el análisis transtextual, permitirán descifrar lo que Borges, desde una propuesta de lectura personal, consiguió en su proceso creativo: plasmar su gusto por los clásicos grecolatinos, compartir la idea de que lo clásico siempre estará vigente y aprovechar para transmitir a sus lectores, por medio de sus ficciones, la manera multívoca de concebir el mundo.
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Elaborado por la Confederación de Nacionalidades Indígenas del Ecuador (CONAIE), la Fundación Regional de Asesoría en Derechos Humanos INREDH, la Fundación Centro Lianas, la Fundación Pachamama y la Fundación Selva Viva. Presentado ante la Comisión Interamericana de Derechos Humanos. Autoría: Bolívar Beltrán, David Cordero, Pablo Fajardo, Wilton Guaranda, Mario Melo y Marcelo Orellana. Septiembre de 2009. Este informe se basa en la respuesta al Cuestionario para los Estados, pueblos indígenas, organizaciones indígenas y de la sociedad civil enviado por la Comisión Interamericana de Derechos Humanos, con la finalidad de evaluar la legislación y políticas públicas del Estado de Ecuador en materia de pueblos indígenas. Texto completo en: ‹www.inredh.org›.
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Este libro aborda el conflicto entre tradición y modernidad. La discusión se reactualiza en torno a tres novelas que pueden considerarse representativas de la literatura andino-caribeña: Los ríos profundos, de José María Arguedas; El chulla Romero y Flores, de Jorge Icaza, y El coronel no tiene quien le escriba, de Gabriel García Márquez. ¿Cómo ser “absolutamente moderno”, como quería Rimbaud, sin convertirse en “pura copia de revista europea”, como denominaba el escritor ecuatoriano Icaza a esos escritores que carecían de arraigo en su historia? Las novelas que disecciona este ensayo son un territorio propicio para distinguir las fricciones entre lo nuevo y lo antiguo. El escritor peruano Arguedas plantea los roces entre oralidad y escritura; Icaza reinventa el monólogo interior y lo convierte en diálogo interior, y el colombiano García Márquez desafía las poderosas fuerzas de la nación moderna y de la economía transnacional mediante la preservación de la memoria rural. El solo hecho de llamar novelas a estos textos significa reconocer su modernidad, pero esta investigación caracteriza en qué sentido esta modernidad es distinta del paradigma predominante. Esa diferencia se establece, según David Guzmán, por la situacionalidad, es decir, por las condiciones materiales de invención y de conflicto en las que ni la historia ni la modernidad son un valor absoluto sino relativo.
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in vitro studies were conducted on five sorghum genotypes developed for the dry tropical highland climate of Kenya and which can be fed to ruminants fresh or as silage. The five sorghum genotypes consisted of two normal white mid-rib (WMR) genotypes, coded E1291 and E65181, and three brown-midrib (BMR) genotypes, coded Lan-5, Lan-6 and Lan-12. Whole mature plants (herbage plus grain) and silage made from E 1291 were used in the study. An in vitro manual gas production technique was used to compare the nutritive characteristics of these genotypes for ruminants. These sorghums differed significantly in true organic matter degraded (OMDeg), which ranged from 520 to 678 g/kg after 24 h incubation and 706 to 805 g/kg after 72 h incubation. All the BMR sorghums had a higher degradability than the WMR genotype, E6518, and the silage, with Lan-5 having the highest degradability. Methane produced per g OMDeg ranged from 40.6 to 46.4 mL/g after 24 h incubation and from 53.1 to 62.6 mL/g after 72 h incubation. It was similar for all genotypes after 24 h incubation but Lan-12 had the highest methane production after 72 h incubation. After 24 h and 72 h incubation all the genotypes produced a similar total amount of gas per OMDeg (293 to 309 and 357 to 385 mL/g, respectively) with similar total short chain fatty acid concentrations in the liquid digesta (7.8 to 10.4 and 9.5 to 10.3 mmol, respectively) and acetate to propionate ratios of 2.16 to 2.49 and 2.35 to 2.87, respectively. The sorghums showed great potential as ruminant feed sources in the region.
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Utilising a Bryce-Smith-Gilbert photoamination of benzene as a key step, a synthesis of ()-conduramine E was carried out. A highly regioselective dihydroxylation of a cyclic diene was effected utilising Sharpless AD-mix-b.
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Abnormal vascular smooth muscle cell (VSMC) proliferation is known to play an important role in the pathogenesis of atherosclerosis, restenosis and instent stenosis. Recent studies suggest that salicylates, in addition to inhibiting cyclooxygenase activity, exert an antiproliferative effect on VSMC growth both in vitro and in vivo. However, whether all non-steroidal anti-inflammatory drugs (NSAID) exert similar antiproliferative effects on VSMCs, and do so via a common mechanism of action, remains unknown. In the present study, we demonstrated that the NSAIDs, aspirin, ibuprofen and sulindac induced a dose-dependent inhibition of proliferation in rat A10 VSMCs (IC50 = 1666 mumol/L, 937 mumol/L and 520 mumol/L, respectively). These drugs did not show significant cytotoxic effects as determined by LDH release assay, even at the highest concentrations tested (aspirin, 5000 mumol/L; ibuprofen, 2500 mumol/L; and sulindac, 1000 mumol/L). Flow cytometric analyses showed that a 48 h exposure of A10 VSMCs to ibuprofen (1000 mumol/L) and sulindac (750 mumol/L) led to a significant G1 arrest (from 68.7 +/- 2.0% of cells in G1 to 76.6 +/- 2.2% and 75.8 +/- 2.2%, respectively, p < 0.05). In contrast, aspirin (2500 mumol/L) failed to induce a significant G1 arrest (68.1 +/- 5.2%). Clearer evidence of a G1 block was obtained by treatment of cells with the mitotic inhibitor, nocodazole (40 ng/ml), for the final 24 h of the experiment. Under these conditions, aspirin still failed to induce a G1 arrest (from 25.9 +/- 10.9% of cells in G1 to 19.6 +/- 2.3%) whereas ibuprofen and sulindac led to a significant accumulation of cells in G1(51.8% +/- 17.2% and 54.1% +/- 10.6%, respectively, p < 0.05). These results indicate that ibuprofen and sulindac inhibit VSMC proliferation by arresting the cell cycle in the G1 phase whereas the effect of aspirin appears to be independent of any special phase of the cell cycle. Irrespective of mechanism, our results suggest that NSAIDs might be of benefit to the treatment of vascular proliferative disorders.
First detection of methylgermylene in the gas phase and time-resolved study of some of its reactions
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A new transient species has been produced and detected by the gas-phase, 193 nm laser flash photolysis of 1,3,4-trimethylgermacyclopent-3-ene, TMGCP. The species has strong visible absorptions in the wavelength region 450−520 nm (maximum at 485 nm) and is attributed to the germylene, MeGeH. Time-resolved kinetic studies have led to the first rate constants for its reactions with GeH4, Me2GeH2, C2H2, C2H4, C3H6, i-C4H8, TMGCP, MeOH, HCl, and SO2. The reactivity of MeGeH is compared to those of GeH2 and GeMe2. The Me-for-H substituent effect varies according to reaction type and is not constant from GeH2 to MeGeH to GeMe2.
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A new 3-D zinc phosphate, [C5N2H14][Zn-2(PO3(OH))(3)], has been synthesised under solvothermal conditions in the presence of 1-methylpiperazine. The structure, determined by single-crystal X-ray diffraction at 293 K (RMM = 520.9, orthorhombic, space group P2(1)2(1)2(1); a = 10.0517(2) &ANGS;, b = 10.4293(2) &ANGS; and c = 14.9050(5) &ANGS;; V = 1562.52 &ANGS;(3); Z = 4; R(F) = 2.60%, wR(F) = 2.93%), consists of vertex linked ZnO4 and PO3(OH) tetrahedra assembled into (4.8) net sheets which in turn are linked through further PO3(OH) units to generate a 3-D framework. 1-Methylpiperazinium cations reside within the 3-D channel system, held in place by a strong network of hydrogen bonds. The (4.8) net sheets occur in a number of zeolite structures e.g. ABW and GIS and related zinc phosphate phases. © 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
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Fulgimides monosubstituted with [M(bpy)(3)](2+) (M = Ru, Os; bpy = 2,2'-bipyridine) chromophore units and with a single bpy group were synthesized and investigated as components of conceivable dinuclear photochromic switches of luminescence. The E-, Z- and closed-ring (C) photoisomer forms of the bpy-bound fulgimide were successfully separated by semi-preparative HPLC. The same procedure failed, however, in the case of the [M(bpy)(3)](2+)-substituted fulgimides. Energy transfer from the excited photochromic unit to the metal-bpy centre competes with the fulgimide cyclization, reducing the photocyclization quantum yields by approximately one order of magnitude compared to the non-complexed fulgimide-bpy ligand (phi(EC) = 0.17, phi(EZ) = 0.071, phi(ZE) = 0.15 at lambda(exc) = 334 nm). The cycloreversion of the fulgimide-bpy ligand is less efficient (phi(CE) = 0.047 at lambda(exc) = 520 nm). The intensity of the (MLCT)-M-3-based luminescence of the metal-bpy chromophore (in MeCN, phi(deaer) = 6.6 x 10(-2) and tau(deaer) = 1.09 mu s for Ru; phi(deaer) = 6.7 x 10(-3) and tau(deaer) = 62 ns for Os) is not affected by the fulgimide photoconversion. These results and supporting spectro-electrochemical data reveal that the lowest triplet excited states of the photochromic fulgimide moiety in all its E-, Z- and closed-ring forms lie above the lowest 3MLCT levels of the attached ruthenium and osmium chromophores. The actual components are therefore unlikely to form a triad acting as functional switch of energy transfer from [Ru(bpy)(3)](2+) to [Os(bpy)(3)](2+) through the photochromic fulgimide bridge.
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A quantitative low energy electron diffraction (LEED) analysis has been performed for the p(2 x 2)-S and c(2 x 2)-S surface structures formed by exposing the (1 x 1) phase of Ir{100} to H2S at 750 K. S is found to adsorb on the fourfold hollow sites in both structures leading to Pendry R-factor values of 0.17 for the p(2 x 2)-S and 0.16 for the c(2 x 2)-S structures. The distances between S and the nearest and next-nearest Ir atoms were found to be similar in both structures: 2.36 +/- 0.01 angstrom and 3.33 +/- 0.01 angstrom, respectively. The buckling in the second substrate layer is consistent with other structural studies for S adsorption on fcc{100} transition metal surfaces: 0.09 angstrom for p(2 x 2)-S and 0.02 angstrom for c(2 x 2)-S structures. The (1 x 5) reconstruction, which is the most stable phase for clean Ir{100}, is completely lifted and a c(2 x 2)-S overlayer is formed after exposure to H,S at 300 K followed by annealing to 520 K. CO temperature-programmed desorption (TPD) experiments indicate that the major factor in the poisoning of Ir by S is site blocking. (c) 2005 Elsevier B.V. All rights reserved.
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The paraventricular nucleus (PVN) of the hypothalamus plays a key role in the control of appetite and energy balance. Both ghrelin and cannabinoid receptor agonists increase food intake when administered into this nucleus: this study investigated possible interactions between the two systems in relation to eating. The orexigenic effect of ghrelin (100 pmol) when infused in to the PVN was reversed by a small, systemic dose of the CB1 cannabinoid receptor antagonist SR141716 (1 mg kg(-1)). This is the first demonstration of a functional relationship between brain ghrelin and endocannabinoid systems, and, although it needs to be further investigated, the effect of ghrelin on food intake when injected into the PVN seems to be mediated by stimulation of cannabinoid release.