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Search Results: 1 - 10 of 218954 matches for " Clerton L. Gomes "
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Chemometric Characterization of Alembic and Industrial Sugar Cane Spirits from Cape Verde and Ceará, Brazil
Regina F. R. Pereira,Carla B. Vidal,Ari C. A. de Lima,Diego Q. Melo,Allan N. S. Dantas,Gisele S. Lopes,Ronaldo F. do Nascimento,Clerton L. Gomes,Maria Nataniela da Silva
International Journal of Analytical Chemistry , 2012, DOI: 10.1155/2012/840528
Abstract: Sugar cane spirits are some of the most popular alcoholic beverages consumed in Cape Verde. The sugar cane spirit industry in Cape Verde is based mainly on archaic practices that operate without supervision and without efficient control of the production process. The objective of this work was to evaluate samples of industrial and alembic sugar cane spirits from Cape Verde and Ceará, Brazil using principal component analysis. Thirty-two samples of spirits were analyzed, twenty from regions of the islands of Cape Verde and twelve from Ceará, Brazil. Of the samples obtained from Ceará, Brazil seven are alembic and five are industrial spirits. The components analyzed in these studies included the following: volatile organic compounds (n-propanol, isobutanol, isoamylic, higher alcohols, alcoholic grade, acetaldehyde, acetic acid, acetate); copper; and sulfates. 1. Introduction Sugar cane spirit, or cacha?a, is a typical Brazilian distilled beverage [1, 2]. This spirit is the second most consumed alcoholic beverage in the country and the third most consumed in the world. There are almost 30,000 cacha?a producers in Brazil and over 5,000 cacha?a brands available on the market [3]. In Cape Verde, the sugar cane spirit, grogue, is a drink produced mainly by archaic practices, without supervision and without efficient control of the production process. To ensure the quality of grogue, it is necessary to correct deviations over the course of the whole production process. For Cape Verde, because there is still no local legislation, the results are evaluated according to Brazilian legislation. Mathematical and statistical methods of analysis can be used for diverse scientific purposes, such as selecting the measurements and procedures best suited to chemical experiments or obtaining a more accurate analysis of the resulting information. According to the needs of any particular study, chemometrics can be used for analytical signal processing, experimental planning and optimization, pattern recognition, data classification, multivariate calibration, and/or monitoring and modeling of various processes, among other applications [4–7]. One of the first steps of chemometric analysis is to plot data in a multidimensional space, grouping the data with similar characteristics to demonstrate that there is some natural relationships between these data points. Thus, groups with distinct characteristics will be differentiated. Exploratory multivariate analysis is performed in a matrix, and the data are organized in a spreadsheet where “ ” samples with “ ” variables results in a
Rese a de "La cultura de las organizaciones" de Angel Aguirre Baztán
José Clerton de Oliveira Martins
Revista Mal-estar e Subjetividade , 2005,
Abstract:
Festa e ritual, conceitos esquecidos nas organiza es (Party and ritual, forgotten concepts in the organizations)
José Clerton de Martins Oliveira
Revista Mal-estar e Subjetividade , 2002,
Abstract: The world of the organizations is being constituted in a universe for the understanding and the analysis of the complexity of the man. This context rescues many things of that were lost in the evolution of the work. The intent to understand the man, focusing about what stimulates and motivates him, and what he realizes, means the rescue of the inherent concepts of this complexity. In this study, we reflect about two phenomenons, party and ritual, important factors in the daily tasks, and fundamental to the context of the socialization and for the meaning of the time of work for who executes it. The study was based in a survey of qualitative nature - ethnographical type realized through a group of conductors. The study proves the introduction of festive rituals in the instituted routine, which in the end, were converted in elements of meaning of the routine work for who execute it.
Células solares de silício micro/nanocristalino
Gomes,Lúcia P.;
Ciência & Tecnologia dos Materiais , 2009,
Abstract: the present work aims to the production and characterization of amorphous (a-si:h)/microcrystalline silicon based semi-transparent solar cells for windows application. the produced solar cells structure is as follows: glass/tco/p/i?/i/n/metal. the semiconductor layers p, i?, i e n were obtained by plasma enhanced chemical vapor deposition (pecvd) of 27.12mhz for the intrinsic i layer and 13.56mhz for the remaining layers. the i? layer is a buffer layer that prevents the diffusion of impurities from the p layer to the intrinsic layer. gallium doped zinc oxide was used as the transparent conductor oxide (tco) due to its chemical stability and natural surface texture. after process optimization, the transparent solar cells were produced and characterized. patterns/geometries to produce these devices were initially studied on 4x4 cm2 substrates in order to insure at least 50% of transmittance. the techniques used to define the cells patterns were photolithography, chemical and dry etching. taking into account the results obtained (characterization), process cost and reliability, the geometry for production of semi-transparent solar cells on 10x10 cm2 substrates was defined. at the final stage of this project, a prototype of a window with an incorporated 10x10 cm2 semi-transparent solar cell was produced. the combination of the semi-transparent solar cell with an electrochromic window proved to be the greatest challenge of the whole process.
A influência da capacita o sobre a motiva o no trabalho
Lílian Cristiane Gomes
Saúde Coletiva , 2007,
Abstract: Este estudio tuvo como objetivo averiguar la infl uencia del proceso de capacitación en la motivación del trabajo en siete trabajadores de un ambulatorio municipal de especialidades médicas y apoyo diagnóstico en Guaxupé, Minas Gerais, Brasil. La población del estudio fue sometida a un cuestionario y observación participante de sus actividades profesionales. Los resultados revelaron que la motivación en el trabajo es algo complejo, que requiere tiempo, dedicación y fuerza de voluntad de las organizaciones. La capacitación solamente proporcionó su parte de contribución, pero no fue capaz, por si sola, de infl uenciar en la motivación de los trabajadores y provocar cambios efectivos en sus practicas.
Los estudios del ocio en Brasil: Un análisis histórico-social Leisure Studies in Brazil: a History-Social Analysis.
Christianne L Gomes
Estudios y perspectivas en turismo , 2012,
Abstract: El objetivo de este artículo es realizar un mapeo del ocio en Brasil, construido desde reflexiones que involucran elementos históricos, sociales, políticos y académicos. La primera parte del texto busca contextualizar las iniciativas relacionadas a la recreación y al ocio en la realidad brasile a en el siglo XX destacando, en especial, las conquistas y los desafíos verificados en el campo político-social a lo largo de los a os. Posteriormente son analizados algunos de los aspectos que marcaron el proceso de difusión y producción de conocimientos sobre el ocio en Brasil a partir de la década de 1970. La tercera y última parte del texto propone un análisis sobre las peculiaridades del ocio en el imaginario social, evidenciando algunas paradojas que involucran esta discusión en la realidad brasile a. The aim of this paper is to chart the leisure in Brazil based on reflections that involve historical, social, political and academic aspects. The first part of the text contextualizes the initiatives related to recreation and leisure in the Brazilian context during the twentieth century highlighting conquests and challenges verified in the political and social field over the years. The paper also discusses some of the issues that marked the process of diffusion / production of knowledge about the experiences in Brazil since the 1970s. The third and last part of the text proposes a discussion on the peculiarities of leisure in the Brazilian social imaginary, showing some paradoxes that involve this discussion in Brazil.
Células solares de silício micro/nanocristalino
Lúcia P. Gomes
Ciência & Tecnologia dos Materiais , 2009,
Abstract: Este trabalho teve por objectivo produzir e caracterizar células solares semi-transparentes de silício amorfo (a-Si:H) /microcristalino para aplica o em janelas. As células solares produzidas têm a seguinte estrutura: vidro/ TCO/ p/ i′/ i/ n/ metal. As camadas semicondutoras p, i′, i e n foram produzidas por deposi o química de vapores assistida por plasma (PECVD - Plasma Enhanced Chemical Vapor Deposition) de 27,12 MHz (camada intrínseca - i) e de 13,56 MHz (camadas p, i, e n). A camada i′ é uma camada de bloqueio (buffer layer) à difus o de impurezas da camada p para a camada intrínseca. O TCO (transparent conductor oxide) usado foi o óxido de zinco dopado com gálio (GZO), devido à sua estabilidade química e à sua textura natural de superfície. Após optimiza o do processo, seguiu-se a produ o e caracteriza o de células solares semitransparentes. Inicialmente estudaram-se padr es e geometrias para produzir células solares semi-transparentes em substratos de 4x4 cm2, de modo a garantir uma transmitancia nunca inferior a 50%. Para se obter a geometria pretendida na célula foram utilizadas as técnicas de fotolitografia, eros o química via húmida e via seca. Tendo em conta os resultados da caracteriza o das células, da transmitancia e ainda da fiabilidade e custo do processo, foi definida a geometria/padr o para produ o de células semi-transparentes em substratos de 10x10 cm2. Com o culminar do trabalho foi realizado um protótipo com a incorpora o da célula semi-transparente de 10x10 cm2 no caixilho de uma janela. A produ o de um demonstrador de uma janela inteligente, resultante da integra o da célula solar semi-transparente com uma janela electrocrómica, foi um grande desafio deste trabalho. The present work aims to the production and characterization of amorphous (a-Si:H)/microcrystalline silicon based semi-transparent solar cells for windows application. The produced solar cells structure is as follows: glass/TCO/p/i’/i/n/metal. The semiconductor layers p, i’, i e n were obtained by Plasma Enhanced Chemical Vapor Deposition (PECVD) of 27.12MHz for the intrinsic i layer and 13.56MHz for the remaining layers. The i’ layer is a buffer layer that prevents the diffusion of impurities from the p layer to the intrinsic layer. Gallium doped Zinc oxide was used as the transparent conductor oxide (TCO) due to its chemical stability and natural surface texture. After process optimization, the transparent solar cells were produced and characterized. Patterns/geometries to produce these devices were initially studied on 4x4 cm2 substrates in order to insu
ócio, lazer e tempo livre na sociedade do consumo e do trabalho
Cássio Adriano Braz Aquino,José Clerton de Oliveira Martins
Revista Mal-estar e Subjetividade , 2007,
Abstract: The Post-Industrial Revolution period was labeled by a profound reference to work, in social structure as well as on the construction of modern individuals. With the crisis of the work centered society, some values and categories are rescued and demand a new characterization. The domain of work on the construction of social structure is then questioned and new ideas are born that bring free time, leisure and relaxation as roles on the structural elements of a new social context. Before positioning ourselves about this domain passage, this study discuss and reflects upon such categories, opening a clear possibility of its territorialization on the field of social sciences, and in a special way, on its contribution to a new form of subjective production.
Anisotropic Magnetocaloric Effect and Magnetic Order in Antiferromagnetic Gd2InGe2  [PDF]
A. L. Lima Sharma, A. M. Gomes, P. A. Sharma
World Journal of Condensed Matter Physics (WJCMP) , 2013, DOI: 10.4236/wjcmp.2013.34029
Abstract:

We investigated the transport, thermal and magnetic properties of antiferromagnetic (TN = 45 K) Gd2InGe2. Magnetization measurements under applied magnetic field, oriented along different crystallographic directions, were used to extract the anisotropic magnetocaloric effect. We also measured magnetization under pulsed field up to 45 T. From the analysis of the electrical transport and magnetization, conduction band electrons were weakly coupled to Gd f-electron local moments. Differential scanning calorimeter data confirmed a second order phase of the antiferromagnetic to paramagnetic transition. The anisotropic magnetocaloric effect points to a model of magnetic ordering whereby Gd local moments couple ferromagnetically and antiferromagnetically perpendicular and parallel, respectively, to the c-axis.

Contributions to the Development of Local e-Government 2.0
Rui Gomes,Lígia Sousa
Future Internet , 2012, DOI: 10.3390/fi4040882
Abstract: With the emergence of Web 2.0 (Blog, Wiki, RSS, YouTube, Flickr, Podcast, Social Networks, and Mashups), new ways of communicating, interacting and being on the Web have arisen. These new communication tools and strategies can radically change some specific work processes in communities, such as the work processes of an autarchy. Some authors emphasize the advantages of using Web 2.0 tools in autarchies; thus, we were interested in exploring the possibilities and constraints of implementing these tools in our region of Portugal, the Minho. Using a case study methodology, we aimed to find out about the possibilities of implementing Web 2.0 tools in autarchies through exploring the interest and motivation of autarchic collaborators in their use (our unit of analysis in autarchies). Information was gathered with the help of a questionnaire, the design of which was based on previous exploratory interviews and applied to four autarchic units in the Minho region. In each unit, three different target-groups were surveyed (Councilors, Information Systems (IS) Technicians, and General Staff), so that we could triangulate the data. Data analysis and results emphasized the interest and motivation of the autarchies in using Web 2.0 tools, as well as the main constraints that would be faced during Web 2.0 implementation. It also allowed us to establish some guidelines for adequate Web 2.0 implementation, including an “ideal” profile of the person responsible for the implementation process.
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