oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 11 )

2019 ( 740 )

2018 ( 838 )

2017 ( 847 )

Custom range...

Search Results: 1 - 10 of 531745 matches for " M. P. Galak "
All listed articles are free for downloading (OA Articles)
Page 1 /531745
Display every page Item
Fabrication, Study of Optical Properties and Structure of Most Stable (CdP2)n Nanoclusters
O. A. Yeshchenko,I. M. Dmitruk,S. V. Koryakov,M. P. Galak
Physics , 2005, DOI: 10.1016/j.physe.2005.07.019
Abstract: CdP2 nanoclusters were fabricated by incorporation into pores of zeolite Na-X and by laser ablation. Absorption and photoluminescence (PL) spectra of CdP2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293 K. Both absorption and PL spectra consist of two bands blue shifted with respect to bulk crystal. We performed the calculations aimed to find the most stable clusters in the size region up to size of the zeolite Na-X supercage. The most stable clusters are (CdP2)6 and (CdP2)8 with binding energies of 9.30 eV and 10.10 eV per (CdP2)1 formula unit respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The Raman spectrum of CdP2 clusters in zeolite was explained to be originated from (CdP2)6 and (CdP2)8 clusters as well. The PL spectrum of CdP2 clusters produced by laser ablation consists of the asymmetric band with low-energy tail that has been attributed to emission of both (CdP2)8 cluster and CdP2 microcrystals.
Optical spectra and structure of CdP4 nanoclusters fabricated by incorporation into zeolite and laser ablation
O. A. Yeshchenko,I. M. Dmitruk,S. V. Koryakov,M. P. Galak
Physics , 2005,
Abstract: CdP4 nanoclusters were fabricated by incorporation into the pores of zeolite Na-X and by deposition of the clusters onto a quartz substrate using laser ablation-evaporation technique. Absorption and photoluminescence (PL) spectra of CdP4 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293 K. Both absorption and PL spectra consist of two blue shifted bands. We performed DFT calculations to determine the most stable clusters configuration in the size region up to size of the zeolite Na-X supercage. The bands observed in absorption and PL spectra were attributed to emission of (CdP4)3 and (CdP4)4 clusters with binding energies of 3.78 eV and 4.37 eV per atom respectively. The Raman spectrum of CdP4 clusters in zeolite proved the fact of creation of (CdP4)3 and (CdP4)4 clusters in zeolite pores. The PL spectrum of CdP4 clusters produced by laser ablation consists of single band that was attributed to emission of (CdP4)4 cluster.
Optical Properties and Structure of Most Stable Subnanometer (ZnAs2)n Clusters
O. A. Yeshchenko,I. M. Dmitruk,S. V. Koryakov,M. P. Galak,I. P. Pundyk,L. M. Hohlova
Physics , 2005, DOI: 10.1016/j.physb.2005.06.030
Abstract: ZnAs2 nanoclusters were fabricated by incorporation into pores of zeolite Na-X and by laser ablation. Absorption and photoluminescence spectra of ZnAs2 nanoclusters in zeolite were measured at the temperatures of 4.2, 77 and 293 K. Both absorption and PL spectra consist of two bands which demonstrate the blue shift from the line of free exciton in bulk crystal. We performed the calculations aimed to find the most stable clusters in the size region up to size of the zeolite Na-X supercage. The most stable clusters are (ZnAs2)6 and (ZnAs2)8 with binding energies of 7.181 eV and 8.012 eV per (ZnAs2)1 formula unit respectively. Therefore, we attributed two bands observed in absorption and PL spectra to these stable clusters. The measured Raman spectrum of ZnAs2 clusters in zeolite was explained to be originated from (ZnAs2)6 and (ZnAs2)8 clusters as well. The PL spectrum of ZnAs2 clusters produced by laser ablation consists of a single band which has been attributed to emission of (ZnAs2)8 cluster.
El cuerpo y la policía: una mirada de la incorporación y de la subjetivación en la educación a través de la película "Tropa de élite"
Galak, Eduardo;
Educar em Revista , 2010, DOI: 10.1590/S0104-40602010000300017
Abstract: this article is about the film "tropa de elite" (2007) -"golden bear" ("goldener b?r") at the berlin film festival (berlinale) -, working mainly the concepts "body" and "police", and secondarily "education", "politics" and "political". the main idea is to think the police in a double sense: colloquial and academic. through the characters of nascimento and andré matias, this paper shows the lives of two police officers with different life-stories. this allows us to think critically, thanks to the theory of "political subjectivity", and to analyze the disciplination of the bodies, embodied and reproduced through education. this movie makes an explicit reference to "discipline and punish" by michel foucault, worked in andré's college classes. this book synthesized in many of its paragraphs the discussion presented here.
“EL OFICIO DEL MAESTRO DE GIMNASIA”. UNA MIRADA DE LAS PRáCTICAS GIMNáSTICAS A TRAVéS DE LOS SIMPSON ("THE MéTIER OF GYM TEACHERS". A LOOK OF THE GYMNASTIC PRACTICES TROUGH THE SIMPSON)
Eduardo Galak
ágora para la Educación Física y el Deporte , 2009,
Abstract: RESUMEN: Trabajado en torno a los conceptos de sentido común, objeto científico y ruptura -en el sentido que les da Pierre Bourdieu-, este artículo busca retomar de “El oficio del sociólogo” aquellas herramientas para constituir un objeto de estudio científico. En nuestro caso, las gimnasias, y cómo se construyen significaciones en torno a ellas que son derivadas tanto del sentido común como desde prenociones científicas. Como instrumento para edificar las categorías sociales y analíticas utilizaremos la serie de dibujos animados “Los Simpson”. La justificación de este recurso poco ortodoxo para el análisis del sentido común es doble: por un lado, porque sus personajes exponen sentidos en torno a las gimnasias que son factibles de ser analizados científicamente; y, por el otro, porque esta serie funciona como espejo de una sociedad que, al mismo tiempo, pretende ser imagen especular de lo que se (re)presenta en la pantalla. Esto es, mutatis mutandis, “Los Simpson” son reproductores de ideas, prácticas y saberes que circulan en las sociedades occidentales y occidentalizadas de los últimos 20 a os, así también como productores. ABSTRACT: This paper works the concepts of “common sense”, “scientific object” and “epistemological break” in Bourdieu’s senses in “Le métier de sociologue: préalables épistémologiques”. Those tools allow us to think and to build our scientific object: the gymnastics and how different meanings are built from common sense and from scientific preconceptions. As a tool to build our social and analytical categories we will use the cartoon series “The Simpson”. The justification for this unorthodox resource for common-sense analysis is, first, because it exposes ways around gymnastics that are feasible to be analyzed scientifically; and, second, it works as a mirror of the society. This is, mutatis mutandis, "The Simpson" are producers of ideas, practices and knowledge that circulates in Western and Westernized societies of the past 20 years, as well as they are reproducers.
MANO DE OBRA. EL CUERPO EN LOS TRABAJOS ETNOGRáFICOS DE PIERRE BOURDIEU EN ARGELIA
Eduardo Galak
Nómadas , 2009,
Abstract: Una década más tarde de haber pisado por primera vez tierras argelinas, Pierre Bourdieu escribió que sus investigaciones etnográficas resultaron ser una suerte de "experimento epistemológico", la traducción de su inconformismo por las "posturas escolásticas" de su formación académica en una metódica reflexión sobre la objetivación, las técnicas y las condiciones sociales, construyendo así su reflexividad epistémica (Wacquant 2004:389). Siguiendo con esa línea de pensamiento, lo que se propone en este escrito es revisar, indagar y analizar el concepto "cuerpo" en los trabajos de campo llevados a cabo en la década del ′60 en Argelia. De la lectura de estos trabajos surge la hipótesis de este escrito: los cuerpos se presentan en las prácticas tanto como las prácticas se representan en los cuerpos. Más aún y profundizando la hipótesis, en estos se puede observar, aunque más no sea incipientemente, una de las dimensiones de lo que posteriormente se constituirá en el habitus bourdieuano: la in-corporación no-consciente de prácticas sociales.(1) El título "Mano de obra" surge a partir de entender que esta frase coloquial contiene la idea de que se trabaja -se hacecon el cuerpo, un cuerpo muchas veces comprendido como un organismo natural capaz de cumplir tareas.
Conquista, confirmación y construcción del cuerpo: una propuesta para el estudio de las prácticas corporales a partir de la epistemología de Pierre Bourdieu
Galak, Eduardo Lautaro;Gambarotta, Emiliano Matías;
Revista Brasileira de Ciências do Esporte , 2011, DOI: 10.1590/S0101-32892011000400009
Abstract: this paper analizes how physical education's investigations understand the concept of "body", especially in la plata's university (argentina). thus, this imply an epistemic and methodological investigation that follows the three moments that bourdieu refers to research a social phenomenons: the conquest, the construction and the confirmation. in the first one we find an epistemological break with the common sense. the second one refers to the effort of building the particular object of study of the physical education. finally, the third one poses some possible lines for future investigations of the notion of "body", in order to escape from any substantialism.
Is variety the spice of life? It all depends on the rate of consumption
Jeff Galak,Justin Kruger,George Loewenstein
Judgment and Decision Making , 2011,
Abstract: Is variety of the spice of life? The present research suggests that the answer depends on the rate of consumption. In three experiments, we find that, whereas a variety of stimuli is preferred to repetition of even a better-liked single stimulus when consumption is continuous, this preference reverses when the satiation associated with repetition is reduced by slowing down the rate of consumption. Decision makers, however, seem to under-appreciate the influence of consumption rate on preference for (and satisfaction with) variety. At high rates of consumption, they correctly anticipate their own, high, desire for variety, but at low rates of consumption people tend to overestimate their own desire for variety. These results complicate the picture presented by prior research on the ``diversification bias'', suggesting that people overestimate their own desire for variety only when consumption is spaced out over time.
Educación de los cuerpos: crítica de la reproducción social y de las potencialidades de su transformación en el marco de la Educación Física Educa o dos corpos: crítica da reprodu o social e das potencialidades de sua transforma o no marco da Educa o Física Education of the bodies: a critique of social reproduction and of potential of its transformation in Physical Education
Emiliano Matías Gambarotta,Eduardo Lautaro Galak
Estudios Pedagógicos (Valdivia) , 2012,
Abstract: Este escrito da cuenta de los mecanismos claves en la reproducción del orden social establecido, particularizando la mirada en aquellos que se ponen en acto en la Educación Física, cuestión que también entra a reflexionar sobre la educación en general y sobre la sociedad moderna. En este marco, nos enfocaremos en el caso argentino, interrogándonos por -lo que con Bourdieu llamamos- el entrelazamiento de nomos y doxa que allí se establece, como por la dominación simbólica que se produce. Todo lo cual nos llevará a analizar los modos en que se concibe esta disciplina y el espacio que ocupa en la currícula como una instancia de control de aquello que podría "descontrolar" la educación intelectual; sin embargo, veremos también como esto conduce a un des-control de dicho control. Es dando cuenta de estos mecanismos, practicando su crítica, que podemos aspirar a transformarlos, para así buscar maneras de transformar las relaciones sociales y desandar los caminos de su reproducción. Analisam-se os principais mecanismos de reprodu o da ordem social estabelecida, particularmente aqueles praticados em Educa o Física, quest o que também precisa ser analisada na educa o e na sociedade, de forma geral. Neste sentido, é enfocado o caso da Argentina e que, conforme Bourdieu, denominamos de entrela amento de nomos e doxa que ali se estabelece dada a domina o simbólica que se produz. Tudo isto leva à análise das maneiras como esta disciplina é concebida e o espa o por ela ocupado no currículo como meio de controle do que poderia "descontrolar" a educa o intelectual, mas que conduz a um descontrole de tal controle. Compreendendo tais mecanismos, praticando sua crítica, pode-se aspirar à transforma o de eles para, assim, encontrar formas de transformar as rela es sociais e desfazer os caminhos da sua reprodu o. This paper aims to analyze key mechanisms of social order reproduction, specifically in Physical Education; an issue that also involves thinking about education in general and on modern society. In this sense, we focus on the Argentinian case, questioning what Bourdieu called the intertwining of nomos and doxa, and the symbolic domination that it produces. This allows us to analyze the ways in which this discipline is conceived and the space it occupies in the curriculum as an instance of control of what could "de-control" the intellectual education; nevertheless, it also permits to see how this produces a "de-control" of that same control. It is by thinking these mechanisms and practicing its criticism, that we can conceive the ways to transform them, and
Dielectric Property Studies of Biologically Compatible Brushite Single Crystals Used as Bone Graft Substitute  [PDF]
M. P. Binitha, P. P. Pradyumnan
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2013, DOI: 10.4236/jbnb.2013.42016
Abstract:

The electrical characterization of bone is essential for the better understanding of the role of electrical stimulation in bone remodeling. Calcium Hydrogen Phosphate Dihydrate or brushite (CaHPO4 2H2O) has been used in bone substitution owing to their fast resorption under physiological condition. Brushite is a suitable matrix for osteoconductive bone grafts. In this work, Calcium Hydrogen Phosphate single crystals have been grown by single diffusion gel growth technique. The powder XRD studies revealed the monoclinic structure of the grown crystals. The vibrational analysis of the crystals is done with FTIR spectroscopy and the major functional groups and their assigned vibrations are discussed. The frequency dependence of dielectric constant and ac conductivity at different temperatures have been studied in detail. This study shows decrease in the dielectric constant with the increase in frequency and temperature. The variation of ac conductivity is found to be increasing with frequency and decreasing with temperature.

Page 1 /531745
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.