Sample records for design
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1

O design em Portugal, um tempo e um modo : a institucionalização do design português entre 1959-1974

Almeida, Victor, 1963-

Este estudo analisa o percurso da institucionalização do design português num período – definal da década de 1950 a 1974 – determinado pelas circunstâncias de modernização dopaís. A institucionalização tem o seu início quando o Estado procura industrializar o designe desenvolve-se no espaço conce...

DRIVER (Portuguese)

2

Design of a social decision support system for organizations

Garrido, Paulo; Faria, Nelson

The growth of Web technologies and collaborative Web-based software as means of tapping and making useful knowledge and perception distributed among people, makes evident the potential interest and application of the paradigm of Socially Supported Decision Systems (SSDS) for organizations.This pape...

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3

UM DESIGN DE AVALIAÇÃO INSTITUCIONAL/ AN INSTITUTIONAL EVALUATION DESIGN/ UN DISEÑO DE EVALUACIÓN INSTITUCIONAL

Narchi, Nadia Zanon; Friedlande, Maria Romana
2001-09-01

Resumo em português O objetivo deste estudo é descrever o design utilizado na avaliação de cursos técnicos de enfermagem da rede oficial de ensino do Estado de São Paulo por indicadores de desempenho institucional quanti-qualitativos. Tais indicadores, estabelecidos por egressos e mercado de trabalho, mostraram-se úteis na avaliação, constatando-se que há necessidade de acrescentar, em estudos avaliativos similares, parâmetros relacionados ao desempenho dos docentes e dos campos de (mais) ensino prático. Conclui-se que o emprego de um número razoável de indicadores permitiu a articulação entre os dados e melhor compreensão da realidade das instituições avaliadas. Resumo em espanhol Este estudio tuvo como objetivo describir el diseño "desing" utilizado en la evaluación de los cursos técnicos de enfermería de la red oficial de Enseñanza del Estado de São Paulo por indicadores de desempeño institucional cuantitativos y cualitativos. Esos indicadores establecidos por egresos y mercado de trabajo, son útiles en la evaluación, constatándose la necesidad de agregar en estudios evaluativos similares, parámetros relacionados con el desempeño de l (mais) os docentes y de los campos de enseñanza práctica. Se concluyó que el empleo de un número razonable de indicadores, permite la articulación entre los datos y una mejor comprensión de la realidad de las instituciones evaluadas. Resumo em inglês This study aims at describing the design used in the evaluation of technical nursing courses in São Paulo State's Education System by means of quantitative and qualitative institutional performance indicators. Such indicators, established by former students and by the labor market, showed to be useful in the evaluation and demonstrated the need for increasing, by means of similar evaluation studies, parameters related to the academic staff's performance as well as that o (mais) f practical teaching fields. It is concluded that the use of a reasonable number of indicators allowed the articulation among data and a better understanding of the evaluated institutions.

Scientific Electronic Library Online (Portuguese)

4

O design e a promoção da saúde nos laboratórios de pesquisa da Fiocruz/ The design and promotion of health in the Fiocruz research laboratories

Grossman, Elio; Araújo, Inesita S.; Araújo-Jorge, Tania C.
2009-06-01

Resumo em português Discute a relação entre os objetos e os ambientes físicos destinados à pesquisa e à promoção da saúde. Analisa o ambiente físico dos laboratórios de pesquisa do Instituto Oswaldo Cruz (IOC/Fiocruz) à luz de princípios da promoção da saúde como ampliação do conceito de saúde, e também a participação dos atores no processo decisório relativo aos espaços de saúde e envolvimento de diferentes disciplinas no planejamento desses ambientes. Encontra a est (mais) reita relação entre design, arquitetura e promoção da saúde ao longo da história da Fiocruz e apresenta depoimentos colhidos na oficina de trabalho denominada Espaço, Criação e Alegria, instrumento de sensibilização, participação e escuta dos usuários de ambientes laboratoriais, desenvolvido e aperfeiçoado no IOC/Fiocruz. Resumo em inglês The article discusses the relationship between the objects and the physical environments devoted to research and health promotion. It analyzes the physical environment of the Instituto Oswaldo Cruz (IOC/Fiocruz) research laboratories in light of such health promotion principles as expanding the concept of health, participation by the players in the decision making process regarding health areas and the involvement of different disciplines in the planning of these environm (mais) ents. It finds a close relationship between design, architecture and health promotion throughout the history of Fiocruz and presents interviews obtained in the workshop denominated Space, Creation and Happiness, an instrument for sensitization, participation and listening utilized by users of the laboratory environments, developed and perfected in the IOC/Fiocruz.

Scientific Electronic Library Online (Portuguese)

7

The Design of OPTIMISM, an Opinion Mining System for Portuguese Politics


We present the design of OPTIMIST an Opinon mining system for detection and classification of opinions about relevant political actors We present the design of OPTIMIST an Opinon mining system for detection and classification of opinions about relevant political actors

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9

Fatores visuais de design e sua influência nos valores de compra do consumidor/ The influence of perceived design characteristics on customers' purchase values

Sampaio, Cláudio Hoffmann; Sanzi, Gianpietro; Slongo, Luiz Antonio; Perin, Marcelo Gattermann
2009-12-01

Resumo em português Este artigo explora o tema das experiências dos consumidores nos ambientes físicos oferecidos pelas empresas de serviços, avaliando o impacto de fatores visuais de design sobre a percepção de valor por parte dos clientes de um ponto de venda com autosserviço. Foram identificados os valores de compra dos usuários e as características de design percebidas no âmbito do varejo de autosserviço, envolvendo leiaute, sinalização e iluminação presentes no ambiente. O (mais) valor de compra, considerado uma resposta interna do consumidor ao ambiente de varejo, incluiu dimensões utilitárias e hedônicas. O método aplicado foi o cross-sectional survey, com a aplicação de questionário a 274 estudantes universitários, os quais manifestaram sua percepção de três diferentes livrarias com autoatendimento, ilustradas por fotos. Os resultados obtidos apontaram quatro características de design com influência significativa na formação de valor de compra dos consumidores sob a perspectiva utilitária e hedônica. Resumo em inglês This paper explores the theme of consumer experience in the physical environment offered by service companies. The research evaluated the influence of design characteristics on the perception of value by customers of self-service retail purchases. We identified the consumer purchase values and the design characteristics perceived in the context of self-service retail, regarding lay-out, signage and illumination in the environment. The applied method was a cross-sectional (mais) survey, with a sample of 274 undergraduate students, who manifested their perceptions of three different self-service bookstores, illustrated with photos. The results pointed out to four design characteristics with significant influence on the formation of value of the consumer's purchase from both the functional and hedonic perspectives.

Scientific Electronic Library Online (Portuguese)

10

Social policy design and assessment : the choice of an equivalence scale for the assessment of efficacy and efficiency on poverty reduction based on the portuguese social insertion income

Nicola, Rui Miguel de Morais Zamith

Income redistributive social policies aiming to reduce inequality and poverty have been submitted to more regular and in-depth analysis and assessment within the EU and OECD. The purpose of this dissertation is to investigate the consequences of assessing income support social policy measures using ...

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11

O Valor do Design para a Indústria Portuguesa e a Inovação e as Políticas Industriais dos anos 90

Maia, Maria Manuela Barros

Abordam-se nesta dissertação quatro áreas de conhecimento: design, competitividade, inovação e políticas industriais. As políticas industrias portuguesas assumiram, para o período analisado, a existência de uma relação entre design e competitividade. Tendo como objecto as empresas industrias portugu...

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12

O processo de latenciação no planejamento de fármacos/ The latentiation process in drug design

Chung, Man Chin; Ferreira, Elizabeth Igne
1999-02-01

Resumo em inglês Short review about the main aspects of prodrug design, as its objectives, applicability and importance, showing the new trends in the research for selective latent forms, namely targeted drugs.

Scientific Electronic Library Online (Portuguese)

13

Importância do metabolismo no planejamento de fármacos/ The importance of metabolism in drug design

Pereira, Dárcio Gomes
2007-02-01

Resumo em inglês It is widely recognized that pharmacokinetic optimization needs to be addressed early in drug discovery to reduce the high failure rate in bringing drugs to market. Poor absorption, too short duration of action due to high elimination rate, or the presence of active metabolites are examples of properties that can potentially lead to unsuccessful clinical programmes. Here I describe a brief overview of advantages and molecular strategies for improving metabolic and pharmac (mais) okinetic properties applied to the discovery of fluconazol, beta-blockers, ritonavir and ezetimibe and to the development of the prodrugs enalapril and bambuterol.

Scientific Electronic Library Online (Portuguese)

15

Dinâmica molecular: teoria e aplicações em planejamento de fármacos/ Molecular dynamics: theory and applications in drug design

Namba, A. M.; Silva, V. B. da; Silva, C. H. T. P. da
2008-12-01

Resumo em português Dinâmica Molecular (DM) é uma ferramenta computacional poderosa usada em Química Medicinal para o planejamento racional de fármacos. DM é uma extensão da Mecânica Molecular, onde o comportamento dinâmico de um sistema molecular é simulado através da integração numérica das equações de movimento. Esta técnica tem sido usada extensivamente para auxiliar e complementar o planejamento de novos ligantes de um alvo terapêutico, bem como estimar a sua potência. (mais) Este artigo enfoca a teoria básica da DM clássica e suas importantes aplicações no planejamento racional de potenciais compostos bioativos, particularmente compostos com atividade anti-HIV. Resumo em inglês Molecular dynamics (MD) is a powerful computational tool used for rational drug design in medicinal chemistry. MD is an extension of Molecular Mechanics, where the dynamic behavior of a molecular system is simulated through numerical integration of the equations of motion. This approach has been extensively used to aid and complement the design of novel ligands to a therapeutic target as well as to estimate their potency. Our review focuses on the basic theory of classica (mais) l MD and their important applications in rational drug design of potential bioactive compounds, particularly anti-HIV compounds.

Scientific Electronic Library Online (Portuguese)

16

Análise estatística de dados da PNAD: incorporando a estrutura do plano amostral/ Statistical analysis of data from PNAD: incorporating the sample design

Silva, Pedro Luis do Nascimento; Pessoa, Djalma Galvão Carneiro; Lila, Maurício Franca
2002-01-01

Resumo em português Este artigo descreve como podem ser considerados na análise dos dados da Pesquisa Nacional por Amostra de Domicílios (PNAD) do IBGE os diversos aspectos de seu plano amostral complexo: estratificação, conglomeração, probabilidades desiguais de seleção e ajustes dos pesos para calibração. Para isso, inclui: uma descrição resumida porém completa do plano amostral dessa pesquisa; indicação de como seus dados podem ser usados para estimar totais; e também uma (mais) descrição resumida dos métodos essenciais para ajustar modelos paramétricos regulares com os dados da pesquisa levando em conta os aspectos de amostragem complexa. Apresenta ainda os resultados de algumas estimativas para características de pessoas e domicílios calculadas com base nos dados da PNAD/1998, para as quais são apresentadas estimativas dos respectivos desvios padrão e dos efeitos do plano amostral. Conclui com uma indicação dos cuidados que os usuários devem ter ao analisar tais dados em sua prática de pesquisa. Resumo em inglês This paper describes how the complex sample design aspects of stratification, clustering, unequal selection probabilities and calibration adjustments of the sample weights affecting the National Household Sample Survey (PNAD) of IBGE can be incorporated into the analysis of its data. For this purpose, it includes: a brief but comprehensive description of this survey's sample design; indication of how its data can be used for estimating totals; and also a description of th (mais) e essential methods required to fit parametric models taking into account the complex sample survey design aspects mentioned. It also presents some estimates for household and personal characteristics obtained from PNAD/1998, for which standard errors and design effects are computed as an illustration. It concludes with an indication of the precautions users must take when analysing data from PNAD in their survey practice.

Scientific Electronic Library Online (Portuguese)

17

Análise estatística de dados da PNAD: incorporando a estrutura do plano amostral/ Statistical analysis of data from PNAD: incorporating the sample design

Silva, Pedro Luis do Nascimento; Pessoa, Djalma Galvão Carneiro; Lila, Maurício Franca
2002-01-01

Resumo em português Este artigo descreve como podem ser considerados na análise dos dados da Pesquisa Nacional por Amostra de Domicílios (PNAD) do IBGE os diversos aspectos de seu plano amostral complexo: estratificação, conglomeração, probabilidades desiguais de seleção e ajustes dos pesos para calibração. Para isso, inclui: uma descrição resumida porém completa do plano amostral dessa pesquisa; indicação de como seus dados podem ser usados para estimar totais; e também uma (mais) descrição resumida dos métodos essenciais para ajustar modelos paramétricos regulares com os dados da pesquisa levando em conta os aspectos de amostragem complexa. Apresenta ainda os resultados de algumas estimativas para características de pessoas e domicílios calculadas com base nos dados da PNAD/1998, para as quais são apresentadas estimativas dos respectivos desvios padrão e dos efeitos do plano amostral. Conclui com uma indicação dos cuidados que os usuários devem ter ao analisar tais dados em sua prática de pesquisa. Resumo em inglês This paper describes how the complex sample design aspects of stratification, clustering, unequal selection probabilities and calibration adjustments of the sample weights affecting the National Household Sample Survey (PNAD) of IBGE can be incorporated into the analysis of its data. For this purpose, it includes: a brief but comprehensive description of this survey's sample design; indication of how its data can be used for estimating totals; and also a description of th (mais) e essential methods required to fit parametric models taking into account the complex sample survey design aspects mentioned. It also presents some estimates for household and personal characteristics obtained from PNAD/1998, for which standard errors and design effects are computed as an illustration. It concludes with an indication of the precautions users must take when analysing data from PNAD in their survey practice.

Scientific Electronic Library Online (Portuguese)

18

Analysis and design of the portal of webquests in Portuguese language

Bottentuit Junior, João Batista; Coutinho, Clara Pereira

In this paper we present the whole process of analysis and implementation of an educational portal on WebQuests in Portuguese Language. The idealized portal was designed for schools and teachers, and was supposed to be a forum of sharing knowledge among Portuguese-speaking countries, thus, contribut...

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19

Inovação tecnológica e inovação narrativa: caminhos para o design no polo moveleiro de Ubá/ Technological innovation and narrative innovation: paths for design in the furniture industry of Ubá/ L'innovation technologique et l'innovation narrative: les alternativesde design pour l'industrie du meuble d'Ubá/ La innovación tecnológica y la innovación narrativa: alternativas para el diseño en la industria del mueble de Ubá

Castro, Maria Luiza A. C. de; Cardoso, Juliana
2010-12-01

Resumo em português O polo moveleiro de Ubá tem apresentado um grande desenvolvimento econômico nos últimos anos. Entretanto, a análise da produção local revela que não existe uma diferenciação pelo design, e que a competitividade é baseada na diminuição do custo. As propostas que têm sido feitas para reposicionamento do polo e conquista de mercados mais exigentes vão demandar, portanto, a construção de novas estratégias em design, para que ele possa se tornar um elemento de distinção da produção local. Resumo em espanhol La industria del mueble de Ubá ha presentado un importante desarrollo económico en los últimos años. Sin embargo, el análisis de la producción local demuestra que no existe una diferenciación de design, y que la competitividad se ha basado en costos más bajos. Las propuestas que se han hecho para cambiar la posición de la producción y ganar los mercados más exigentes pedirá para el desarrollo de nuevas estrategias en el design, de modo que pueda convertirse en un elemento distintivo de la producción local. Resumo em inglês The furniture industry of Ubá has presented a major economic development in recent years. However, the analysis of the local production shows that there is no differentiation through design and competitiveness has been based on lower costs. The proposals that have been made to reposition the local production and conquer more demanding markets will ask for the development of new strategies in design, so that it can become a distinctive element in the local production.

Scientific Electronic Library Online (Portuguese)

20

Utilização de planejamento fatorial no preparo de amostras de detergente em pó para a determinação de fósforo por análise em fluxo/ Evaluation of sample preparation of the detergent powder using factorial design

Silva, Fabíola Soraia Vital Campos Barbosa da; Silva, Valdinete Lins da; Lavorante, André Fernando; Paim, Ana Paula Silveira
2010-01-01

Resumo em inglês The decomposition of detergent powder samples in a microwave oven and autoclave was evaluated. To establish the best experimental conditions a 2(5) factorial design was performed, varying the conditions in autoclave and microwave digestion and flow system parameters for the determination of phosphorus. The best composition was: 0.2 mL sulfuric acid; 500 W power and a 2 min time interval; 6 mmol L-1 of ascorbic acid and 16 mmol L-1 of molybdate to flow system. This factor (mais) levels use less reagents than the reference method. No statistically significant differences were found between the autoclave and microwave oven responses at the 95% confidence level.

Scientific Electronic Library Online (Portuguese)

21

Tabelas para medir acuidade visual com escala logarítmica: porque usar e como construir/ Logarithmic visual acuity charts: reasons to use and how to design it

Messias, André; Jorge, Rodrigo; Cruz, Antonio Augusto Velasco e
2010-02-01

Resumo em português A acuidade visual representa o inverso do ângulo visual, ou seja, da menor distância angular entre dois pontos que podem ser vistos como separados. Apesar de ser a medida da função visual mais comum na prática oftalmológica, é muitas vezes interpretada erroneamente, principalmente devido às inúmeras tabelas e diferentes sistemas de notações empregados na clínica. Este artigo revisa alguns conceitos sobre a quantificação da acuidade visual, suas principais notações e tabelas de medida, discutindo as vantagens do uso da escala logarítmica. Resumo em inglês Visual acuity represents the visual angle or the smallest distance between two points that allows their discrimination as separated points. Although it is the most common clinical measurement of visual function, it is often misunderstood, especially due to the variety of charts and different notation systems employed for its quantification. This article reviews some concepts about visual acuity measurement, the main notation systems, type of charts and discuss the advantages of using logarithmic scales.

Scientific Electronic Library Online (Portuguese)

22

Otimizaçâo das condições de preparação de eletrodos à base de carbono cerâmico utilizando-se planejamento fatorial/ Optimization of electrodes conditions preparation based carbon ceramic using factorial design

Skeika, Tatiane; Pessoa, Christiana; Fujiwara, Sergio Toshio; Nagata, Noemi
2010-01-01

Resumo em inglês Different parameters of carbon ceramic electrodes (CCE) preparation, such as type of precursor, carbon material, catalyst amount, among others, significantly influence the morphological properties and consequently their electrochemical responses. This paper describes a 2³ factorial design (2 factors and 3 levels with central point replicates), which the factors analyzed were catalyst amount (HCl 12 mol L-1), graphite/precursor ratio, and precursor type (TEOS - tetraethox (mais) ysilane and MTMOS - methyltrimetoxysilane). The design resulted in a significant third order interaction for peak current values (Ipa) and a second order interaction for potential difference (ΔE), between thefactors studied, which could not be observed when using an univariated study.

Scientific Electronic Library Online (Portuguese)

23

Azul de metileno imobilizado na celulose/TiO2 e SiO2/TiO2: propriedades eletroquímicas e planejamento fatorial/ Methylene blue immobilized in cellulose/TiO2 and SiO2/TiO2: electrochemical properties and factorial design

Scotti, Rodrigo; Lima, Eder C.; Benvenutti, Edilson V.; Piatnicki, Clarisse M. S.; Dias, Sílvio L. P.; Gushikem, Yoshitaka; Kubota, Lauro T.
2006-04-01

Resumo em inglês The electrochemical properties of methylene blue immobilized on cellulose/TiO2 and mixed oxide SiO2/TiO2 matrices were investigated by means of cyclic voltammetry. The electron mediator property of the methylene blue was optimized using a factorial design, consisting of four factors in two levels. The experimental observations and data analyses on the system indicate that the lowest peak separation occurs for Sil/TiOAM, 1.0 mol L-1 KCl solution and 20 mV s-1 scan rate, wh (mais) ile values of current ratio closest to unity were found for Cel/TiOAM independent of electrolyte concentration, 0.2 or 1.0 mol L-1, and scan rate, 20 mV s-1 or 60 mV s-1.

Scientific Electronic Library Online (Portuguese)

24

Desenvolvimento de metodologia analítica para determinação de colesterol em ração para ruminantes através de planejamento experimental fatorial/ Development of an analytical method for cholesterol determination in feed for ruminants using factorial experimental design

Bandeira, Cecília Muller; Ferreira, José Maria; Bragagnolo, Neura; Mariutti, Lilian Regina Barros
2008-01-01

Resumo em inglês A chromatographic method was developed for cholesterol determination in feed for ruminants using response surface methodology. Among the five approaches of sample preparation methods tested, the saponification of the sample without heating presented less interference in the gas chromatography. The method presented a relative standard deviation (RSD) of 4.3%, recoveries between 84 and 87% and detection limit of 0.001 mg of cholesterol per g of feed.

Scientific Electronic Library Online (Portuguese)

25

Predição da demanda química de oxigênio em chorume maduro contendo reagente de Fenton, por meio de modelo matemático empírico gerado com planejamento fatorial completo/ Prediction of chemical oxygen demand in mature landfill leachate doped with Fenton's reagent, using empirical mathematical model obtained by full factorial design

Peixoto, André Luís de Castro; Brito, Renata Alves de; Salazar, Rodrigo Fernando dos Santos; Guimarães, Oswaldo Luiz Cobra; Izário Filho, Hélcio José
2008-01-01

Resumo em inglês COD is an important parameter to estimate the concentration of organic contaminants. The closed system technique with the use of K2Cr2O7 is the most important one, however, it has the inconvenience to suffer positive chemical interferences from inorganic compounds such as Fe2+ and H2O2 (not enough reported in the literature). This paper considers a statistical-experimental set capable to validate a empirical mathematical model generated from a 23 experimental design, in t (mais) he presence of Fe2+ and H2O2. The t test shows that mathematical model has 99,99999% confidence degree and the experimental validation test indicates absolute mean error of 4,70%.

Scientific Electronic Library Online (Portuguese)

26

Determinação simultânea de As, Cd e Pb em amostras de água purificada para hemodiálise por espectrometria de absorção atômica com forno de grafite, após otimização multivariada baseada no uso de planejamento experimental/ Simultaneous determination of arsenic, cadmium and lead by GF AAS in purified water samples for hemodialysis after multivariate optimization based on factorial design

Santos, Lisia Maria G. dos; Gonçalves, Jaylei M.; Jacob, Silvana do Couto
2008-01-01

Resumo em inglês This paper reports the development of a methodology for simultaneously determining As, Cd and Pb, employing GF AAS with polarized Zeeman-effect background correction. In order to make the procedure applicable, the influence of pyrolysis and atomization temperatures and the amount of chemical modifiers were studied. Factorial and central composite designs were used to optimize these variables. Precision and accuracy of the method were investigated using Natural Water Refer (mais) ence material, Nist SRM 1640. Results are in agreement with certified values at the 95% confidence limit when the Student t-test is used. This methodology was used for quality control of purified water for hemodialysis.

Scientific Electronic Library Online (Portuguese)

27

Uma metodologia para a condução do processo associado ao projeto organizacional de sistemas de operações integradas/ A methodology to drive the integrated operations system organizational design process

Lima, Edson Pinheiro de; Costa, Sérgio Eduardo Gouvêa da
2004-01-01

Resumo em português Em sistemas de operações integradas, os reais benefícios da integração só podem ser obtidos e reconhecidos se o projeto e a estrutura organizacional decorrente se tornam compatíveis com a mudança a ser introduzida. Além disso, há a necessidade de se desenvolver uma metodologia para a condução da atividade de projeto, o que inclui a sua gestão e instrumentalização. Da definição de um modelo de referência para o projeto organizacional, desenvolve-se a raci (mais) onalidade do processo de projetar. A partir desta racionalidade e dos seus elementos constituintes, identifica-se uma abordagem metodológica que tenha a completude necessária, no sentido de se manter a coerência entre a estrutura e a mudança a ser introduzida, bem como de servir como instrumento para a sua operacionalização. Portanto, afora desenvolver a racionalidade do processo de projetar, destaca-se como contribuição deste trabalho a identificação de uma abordagem que, além de definir um processo de gestão da atividade de projeto organizacional, orientando a sua instrumentalização, poderá servir como uma estratégia para o refinamento e a validação do modelo. Tal metodologia contribui para a construção de uma Teoria Organizacional de Projeto para os sistemas organizacionais, em particular para os sistemas de operações integradas. Resumo em inglês The real benefits of integration, in an integrated operations system, can only be obtained and recognized if the implemented organizational design and structure are compatible with the introduced change. Besides the development of a methodology to drive the design task is needed, including its management and operationalization. From the reference model definition for the organizational design, it is developed the design process rationality. From this rationality and its c (mais) onstituent elements, it is identified a methodological approach that encompass the needed completeness, in the sense to sustain the coherence between the structure and the introduced change, besides being the basis to instrumentalize its operationalization. Farther developing the design process rationality, it is pointed out in this work the methodological approach identification, that not only is used to source the organizational design task with the required process management that guides its operationalization, but also serves as a strategy to refine and to validate the model. This methodology contributes to the construction of a Organizational Design Theory to organizational systems, particularly the integrated operations systems.

Scientific Electronic Library Online (Portuguese)

28

Utilização de resíduos agroindustriais para a produção de proteases pelo termofílico Bacillus sp em fermentação submersa: otimização do meio de cultura usando a técnica de planejamento experimental/ Protease production using agroindustrial residues by thermophilic Bacillus sp in submerged fermentation: optimization of the culture medium using an experimental design approach

Ladeira, Silvania Alves; Andrade, Marcela Vicente Vieira; Delatorre, Andréia Boechat; Perez, Victor Haber; Martins, Meire Lélis Leal
2010-01-01

Resumo em inglês Thermophilic Bacillus sp. SMIA-2, produced protease when grown on apple pectic, whey protein and corn step liquor medium, whose concentration was varied from 3 to 10 gL-1, according to the central composite design 2³. The experiments were conducted in shaker, at 50 °C, 150 rpm and initial pH 6.5. The results revealed that the culture medium affected both, cell growth and enzyme production. After graphical and numerical optimization procedure, the enzyme production reach (mais) ed its maximum value at 30 h fermentation, reaching, approximately, 70 U protein mg-1, suggesting that this process was partially associated to the growth.

Scientific Electronic Library Online (Portuguese)

29

Efeito da adição de precursores na produção de alcaloide anticancerígeno usando a técnica de planejamento experimental/ Effect of the precursor addition on the anticancer alkaloid production using experimental design methodology

Justo, Oselys Rodriguez; Haber-Perez, Victor; Viana, Cláudia de Oliveira; Alegre, Ranulfo Monte
2009-01-01

Resumo em inglês The effect of precursors on the anticancer alkaloid production by submerged fermentation using M. anisopliae 3935 was studied, according to complete experimental design 2² with three central points. The results showed that lysine was the most important variable, however, when both lysine and glucose were added to the fermentation medium, the alkaloid production reached, approximately, 17 mg L-1 after 120 hours of fermentation. Then, the scale-up of the process was carrie (mais) d out and these results were confirmed. Finally, 35 mg L-1 of alkaloid at 192 h were attained after increment of added aminoacid lysine.

Scientific Electronic Library Online (Portuguese)

30

A importância do design e da inovação na indústria portuguesa

Nunes, Luís Peyssonneau

Muitas vezes a performance da actividade económica é associada apenas à produtividade e ao preço deixando de lado outros factores. O design e a inovação são dois dos factores que poderão contribuir para a competitividade e sustentabilidade económica das empresas.O objectivo deste trabalho, baseado ...

DRIVER (Portuguese)

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Estrutura de informação como suporte em múltiplas vistas do produto num projeto orientado para a manufatura/ Information structure as support in multiviewpoint of product in the design for manufacture

Canciglieri Junior, Osiris; Young, Robert I. M.
2006-08-01

Resumo em português Atualmente, as atividades de projeto devem ser muito bem orquestradas e integradas, proporcionando a evolução da filosofia da Engenharia Concorrente, onde decisões sobre diferentes aspectos relacionados ao ciclo de vida do produto devem ser consideradas simultaneamente. Porém, quando todo o projeto orientado para a manufatura é considerado, existem muitos aspectos que devem ser endereçados. Isso conduz à necessidade de sistemas de informações que sejam capazes de (mais) auxiliar múltiplas vistas do produto, onde cada vista provê a representação apropriada para auxiliar pelo menos uma perspectiva da manufatura. Essa pesquisa investigou o potencial do sistema baseado no Modelo do Produto para representar múltiplas vistas no Projeto orientado para a manufatura de produtos plásticos injetáveis e explorou em particular a vista da moldabilidade, do projeto do molde (cavidade) e da manufatura do molde (cavidade). A abordagem explorou estruturas de informações particulares para auxiliar cada aplicativo do Projeto Orientado para a Manufatura e um Modelo de Produto experimental foi implementado, utilizando um banco de dados orientado ao objeto. Resumo em inglês Actually the activities of overall design must be well orchestrated and integrated which has led to the evolution of the philosophy of Concurrent Engineering where the decisions about different aspects related to the product's life cycle, must be considered simultaneously. However, when the full breadth of design for manufacture is considered there are many aspects that must be addressed. This leads to the need for information systems to be able to support multiple views (mais) of a product, where each view provides the appropriate representation to support at least one manufacturing perspective. This research has investigated the potential of product model based systems to support multiple viewpoints in Design for Manufacture. The research has focused on the design for manufacture of plastic injection moulded products and has explored the particular viewpoints of mouldability, mould design and mould manufacturing. The approach taken has been to explore particular information structures to support each Design for Manufacture application. An experimental Product Model has been implemented using an object-oriented database.

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A utilização dos materiais no Design e a competitividade da indústria moveleira da região metropolitana de Curitiba: um estudo de caso

Teixeira, Joselena de Almeida; Cândido, Gesinaldo Ataíde; Abreu, Aline França de
2001-06-01

Resumo em português O trabalho faz uma análise da utilização dos domínios e estratégias do Design e a sua relação com a competitividade do segmento moveleiro da Região Metropolitana de Curitiba em função da utilização dos materiais na criação, desenvolvimento e implementação do Design. A operacionalização da pesquisa se realizou mediante um estudo de caso, tendo como suporte teórico as variáveis: Design, materiais e competitividade. Para estabelecer um padrão de relacion (mais) amento entre as variáveis foram levantados os fatores de sucesso da competitividade da referida empresa e analisados à luz dos padrões de concorrência praticados na indústria de móveis. Para conjectura de explicação do relacionamento entre competitividade e as outras duas variáveis, os dados obtidos na entrevista foram, na seqüência, expostos aos modelos; estratégias genéricas de Porter (1986) e estratégias do Design (1993). O resultado desta exposição nos possibilitou inferir que a empresa busca vantagem competitiva por meio da diferenciação, no primeiro modelo citado. E, no segundo caso, há uma predominância na utilização do conceito aperfeiçoado. Resumo em inglês The work makes an analysis of the utilization of Design's domains and strategies and its relationship with the competitiveness level of the furniture segment from the Metropolitan Region of Curitiba concerning the utilization of materials in the Design's creation, development and implementation. The research realization was supported by a case study. The work was mostly based on the theoretical support of the following variables: Design, materials and competitiveness. To (mais) set relationship standard among the variables, were raised the factors of the competitiveness success of enterprise. These factors were analyzed based on the competitiveness standards used in the furniture industry. To the conjecture of the relationship explication between competitiveness and the two other variables, the interview's data were, in the sequence, exposed to the models: Porter's generic strategies (1986) and the Design's strategies (1993). It was possible to infer from the result of this exposition that the enterprise searches competitive advantage by the differentiation in the former model. And in the second case, there is a predominance of the improved concept utilization.

Scientific Electronic Library Online (Portuguese)

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Otimização de método para determinação de flavonóis e flavonas em frutas por cromatografia líquida de alta eficiência utilizando delineamento estatístico e análise de superfície de resposta/ Optimization of a method for determination of flavonols and flavones in fruits by HPLC using statistical design and response surface analysis

Hoffmann-Ribani, Rosemary; Rodriguez-Amaya, Delia B.
2008-01-01

Resumo em inglês This work optimized the HPLC conditions for the simultaneous determination of luteolin, apigenin, myricetin, quercetin and kaempferol in aglycone form, as well defined the best conditions for hydrolysis/extraction of these flavonoids in fruits, using the statistical central composite design and response surface analysis. A reverse phase method was developed using a gradient of methanol/water acidified with 0.3% formic acid as mobile phase and a photodiode array detector. (mais) The samples were extracted with methanol/water (50:50 v/v) at 90 ºC. The optimum time and HCl concentration varied for the different fruits investigated, demonstrating the necessity of optimizing these conditions for each fruit analyzed. Good recovery (87.1 to 96.3%), repeatability and linearity were obtained.

Scientific Electronic Library Online (Portuguese)

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Revistas de arquitetura, urbanismo, paisagismo e design: a divergência de perspectivas/ Architecture, urbanism, landscape architecture and design periodicals: divergent perspectives

Segawa, Hugo; Crema, Adriana; Gava, Maristela
2003-12-01

Resumo em português Trata de estabelecer as características atuais de revistas de arquitetura, urbanismo, paisagismo e design publicados no Brasil para um possível enquadramento como periódicos científicos ou técnicos. Comenta uma metodologia corrente de avaliação de publicações científicas de outras áreas de conhecimento e contextualiza sua aplicação diante da natureza diversificada da produção científica da área de arquitetura e urbanismo. Resumo em inglês This paper presents the features of Architecture, Urbanism, Landscape Architecture and Design periodicals published in Brazil for their potential consideration as scientific or technical periodicals. Comments a current methodology of evaluation for scientific periodicals from different fields of knowledge and the pertinence of its applicability due to the diverse nature of the scientific output from the Architecture and Urbanism area.

Scientific Electronic Library Online (Portuguese)

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Sobre a função das representações conceituais simbólicas na gramática do design visual: encaixamento ou subjacência?/ On the functions of symbolic conceptual representations in the grammar of visual design: embedded or underlying patterns?

Biasi-Rodrigues, Bernardete; Nobre, Kennedy Cabral
2010-04-01

Resumo em português Nosso objetivo neste trabalho é discutir a função das categorias gramaticais atributo simbólico e portador na Gramática do Design Visual (KRESS e van LEEUWEN, 2006 [1996]). Para os autores, estes constituintes, pertencentes à metafunção ideacional, poderiam estar presentes ou não em estruturas conceituais simbólicas, conferindo a um participante um valor que o caracterizaria e/ou o conceituaria. Advogamos aqui que, decorrente dessa função, os atributos simból (mais) icos e os portadores são responsáveis pela realização de inferências por parte dos leitores de imagens e, portanto, estão sempre presentes em quaisquer representações visuais. Em virtude disso, entendemos que as representações conceituais simbólicas não estão no mesmo nível de autonomia que as representações narrativas e conceituais classificatórias e analíticas, e sim num nível de subjacência. Resumo em inglês Our aim in this article is to discuss the function of the grammatical categories symbolic attribute and carrier in the Grammar of Visual Design (Kress and van Leeuwen, 2006 [1996]). For the authors, these constituents, belonging to the ideational metafunction, could be present or not in symbolic conceptual structures, giving a participant a value that would characterize and/or conceptualize him. We advocate that, as a result of the ideational function, symbolic attributes (mais) and carriers are responsible for the production of inferences by the readers of images and, therefore, are always present in any visual representation. As a result, we believe that symbolic conceptual representations are not at the same level of autonomy as classifying and analytical narrative and conceptual representations, but at the level of underlying patterns.

Scientific Electronic Library Online (Portuguese)

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Integrated chip-size antennas for wireless microsystems : fabrication and design Considerations

Mendes, P. M.; Polyakov, A.; Bartek, M.; Burghartz, J. N.; Correia, J. H.

This paper reports on fabrication and design considerations of an integrated folded shorted-patch chip-size antenna for applications in short-range wireless microsystems and operating inside the 5–6 GHz ISM band. Antenna fabrication is based on wafer-level chip-scale packaging (WLCSP) techniques and...

DRIVER (Portuguese)

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Armazenamento de conhecimento explícito referente ao DFA (Design for Assembly) utilizando regras baseadas em casos/ Storage of Design for Assembly (DFA) explicit knowledge according to guidelines based on cases

Savi, Antonio Francisco; Gonçalves Filho, Eduardo Vila; Savi, Erika Monteiro de Souza e
2010-03-01

Resumo em português Uma importante fonte de vantagem competitiva para muitas organizações no mundo é a capacidade de criar projetos de produtos menos complicados, compostos por um número pequeno de partes e de fácil montagem, sem deixar de atender às expectativas do consumidor, denominada abordagem de DFA - Design for Assembly (Projeto para Montagem). Existe uma dificuldade de catalogar essas abordagens, mais especificamente, não existem regras para o seu armazenamento, e a consequên (mais) cia é a ineficácia na recuperação desse conhecimento explícito. O objetivo desta pesquisa é caracterizar as regras de armazenamento a respeito de informações de DFA com base em casos (RBC - Raciocínio Baseado em Casos), por meio do tipo qualitativo, com propósito exploratório-descritivo. Observa-se que RBC ressalta a possibilidade de armazenar conhecimento explícito ordenadamente, resultando com isso maior eficácia na sua recuperação e, consequentemente, a diminuição do número de informações dispensáveis. Resumo em inglês An important source of competitive advantages for many organizations worldwide is the capacity to create designs for less complicated products, consisting of a small number easily assembled parts which, nonetheless, satisfy consumers' expectations, known as the Design for Assembly (DFA) approach. There is an obstacle in cataloguing these approaches, specifically, a lack of storage guidelines; consequently, the retrieval of this explicit knowledge is ineffective. The aim o (mais) f this study is to identify storage guidelines for DFA information based on previous cases (CBR - Case-based reasoning), qualitative in kind and with a descriptive-exploratory purpose. It is noted that CBR highlights the possibility of explicit knowledge stored in an orderly manner, resulting in more efficient retrieval and a decrease in the amount of irrelevant information.

Scientific Electronic Library Online (Portuguese)

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Modelagem Molecular: Uma Ferramenta para o Planejamento Racional de Fármacos em Química Medicinal/ Molecular modeling: a tool for rational drug design in medicinal chemistry

Barreiro, Eliezer J.; Rodrigues, Carlos Rangel; Albuquerque, Magaly Girão; Sant'Anna, Carlos Mauricio Rabello de; Alencastro, Ricardo Bicca de
1997-06-01

Resumo em inglês The molecular basis of modern therapeutics consist in the modulation of cell function by the interaction of microbioactive molecules as drug cells macromolecules structures. Molecular modeling is a computational technique developed to access the chemical structure. This methodology, by means of the molecular similarity and complementary paradigm, is the basis for the computer-assisted drug design universally employed in pharmaceutical research laboratories to obtain more (mais) efficient, more selective, and safer drugs. In this work, we discuss some methods for molecular modeling and some approaches to evaluate new bioactive structures in development by our research group.

Scientific Electronic Library Online (Portuguese)

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Quimiometria II: planilhas eletrônicas para cálculos de planejamentos experimentais, um tutorial/ Chemometrics II: spreadsheets for experimental design calculations, a tutorial

Teófilo, Reinaldo F.; Ferreira, Márcia M. C.
2006-04-01

Resumo em inglês This work describes, through examples, a simple way to carry out experimental design calculations applying an spreadsheets. The aim of this tutorial is to introduce an alternative to sophisticated commercial programs that normally are too complex in data input and output. An overview of the principal methods is also briefly presented. The spreadsheets are suitable to handle different types of computations such as screening procedures applying factorial design and the opti (mais) mization procedure based on response surface methodology. Furthermore, the spreadsheets are sufficiently versatile to be adapted to specific experimental designs.

Scientific Electronic Library Online (Portuguese)

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Reprojeto do contraforte: um caso de aplicação do ecodesign em manufatura calçadista/ Stiffener redesign: a case of eco-design application in footwear manufacture

Borchardt, Miriam; Wendt, Marcos Henrique; Sellitto, Miguel Afonso; Pereira, Giancarlo Medeiros
2010-09-01

Resumo em português O objetivo deste artigo é relatar um caso de reprojeto de um produto existente, o contraforte injetado, focando na minimização do impacto ambiental e na redução de custo do produto final, o calçado esportivo. O estudo de caso ocorreu em empresa de componentes para calçados. Foram analisadas as práticas do ecodesign inseridas no projeto de produto da empresa e o modo como foram operacionalizadas. São discutidos, também, os motivos que levaram a empresa a adotar o (mais) ecodesign e as dificuldades e barreiras encontradas. O artigo faz uma revisão sobre ecodesign, apresenta a metodologia de pesquisa e os resultados da investigação. O contraforte reprojetado trouxe, para a empresa fabricante de calçados esportivos, parceira da empresa produtora do componente em estudo, diminuição significativa do uso de adesivos e solventes, além de uma redução de 9,7% no custo-alvo do processo de aplicação do contraforte no cabedal. Resumo em inglês The purpose of this paper is to analyze the application of eco-design in the redesign of a component from the footwear industry, the stiffener. The focus is on a reduction in the environmental impact and in the final cost of sports footwear. The case study took place in a company that produces footwear components. The eco-design practices considered during the product redesign in the company and their implementation were analyzed. We also investigate and discuss the reaso (mais) ns why the company was led to adopt eco-design and the difficulties and barriers encountered by designers in their application. The paper reviews eco-design, describes the research methodology and presents and discusses research findings. The redesigned stiffener brought the footwear assembly company a new manufacturing business partner, and led to a significant reduction in the requirement for adhesives and solvents, and a 9.7% reduction in the target-cost of the application process.

Scientific Electronic Library Online (Portuguese)

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Establishing measures to improve design quality in the Portuguese construction industry

Couto, J. Pedro

The Portuguese construction industry is currently experiencing great challenges. Along with theredefinition of its legal framework, so as to make it more efficient and bring it up to date, the sector is going through stagnation in the private market and a slump in the public construction market, mo...

DRIVER (Portuguese)

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Condicionantes sociais do projeto de instrumentos de trabalho: o caso de uma bancada de inspeção/ Social conditions of work instruments design: the case of a pharmaceutics inspection workstation

Lima, Francisco de Paula Antunes; Resende, Adson Eduardo; Vasconcelos, Renata Campos
2009-01-01

Resumo em português A natureza social dos objetos é reconhecida nos aspectos formais ou estéticos, e nem sempre gera diretrizes para o design no aspecto funcional. Recentemente, as dimensões cognitivas têm sido incorporadas aos projetos de produto. O propósito deste artigo é discutir e demonstrar a importância das interações sociocognitivas no projeto de instrumentos de trabalho no nível de relações físicas, sempre tratados segundo modelos biomecânicos e variáveis fisiológica (mais) s. Tomando como exemplo o projeto de bancada de inspeção de produtos farmacêuticos, mostramos como esse projeto, para se ajustar aos modos operatórios, teve que atender os condicionantes intersubjetivos do contexto social no qual se insere a atividade. Resumo em inglês The social nature of objects is recognized in their formal or aesthetic aspects, but this does not always generate guidelines for design in the functional aspect. Recently, cognitive dimensions have been incorporated into product design. Our intention in this article is to argue and demonstrate the importance of socio-cognitive interactions in the design of work instruments at the level of physical relations, always treated in accordance with biomechanical models. Taking (mais) as example the design of a work station for pharmaceutical products inspection, we show how the design had also to take into account the subjective conditioners derived from the social context in which the activity occurs.

Scientific Electronic Library Online (Portuguese)

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Sheep housing in Trás-os-Montes. Contribution to design buildings and equipment appropriate for local sheep farms

Barbosa, José Carlos

Sheep farming has a great importance in the region of Trás-os-Montes, one of the most depopulated and least favoured Portuguese areas. We have studied the buildings for sheep housing, in this region, aiming to identify the aspects that may be considered as constraints or problems that can hinder th...

DRIVER (Portuguese)

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Understanding the microenterprise sector to design a tailor-made microfinance policy for Cape Verde

Baptista, José; Ramalho, Joaquim; Silva, Jacinto

Two of the central challenges faced by Cape Verde at the present are the high level of unemployment and the increasing proportion of the population living in (relative) poverty. Microenterprise development can be an effective means of addressing both problems in a developing country like Cape Verde,...

DRIVER (Portuguese)

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Abordagem racional no planejamento de novos tuberculostáticos: inibidores da InhA, enoil-ACP redutase do M. tuberculosis/ Rational approach in the new antituberculosis agent design: inhibitors of InhA, the enoyl-ACP reductase from Mycobacterium tuberculosis

Andrade, Carolina Horta; Pasqualoto, Kerly Fernanda Mesquita; Zaim, Márcio Henrique; Ferreira, Elizabeth Igne
2008-06-01

Resumo em português Associada à disseminação da infecção causada pelo HIV, a tuberculose (TB) é considerada, atualmente, problema mundial de saúde pública devido às proporções que vem assumindo. A resistência micobacteriana aos fármacos utilizados na terapêutica é a principal causa da reincidência da TB. Diante deste quadro alarmante, o desenvolvimento de novos e seletivos fármacos anti-TB se faz urgente e necessário. A biossíntese de ácidos graxos é um processo bioquím (mais) ico realizado por procariotos e eucariotos, o qual fornece precursores essenciais à montagem de componentes celulares importantes, tais como fosfolipídeos, lipoproteínas, lipopolissacarídeos, ácidos micólicos e envelope celular. As diferenças bioquímicas e funcionais entre o mecanismo biossintético de ácidos graxos em bactérias e mamíferos tornam-no alvo relevante ao planejamento de novos antibacterianos, mais seletivos e menos tóxicos. As enoil-ACP redutases são enzimas cruciais à etapa de alongamento de ácidos graxos, considerados produtos intermediários na biossíntese de ácidos micólicos - os principais componentes da parede celular micobacteriana. Portanto, tais enzimas são tidas como alvos moleculares no planejamento racional de novos tuberculostáticos. Avanços recentes no processo de descoberta de novos agentes anti-TB, particularmente os inibidores da enoil-ACP redutase, serão discutidos nesta revisão. Resumo em inglês In conjunction with the spread of HIV infection, tuberculosis (TB) has been among the worldwide health threats. Mycobacteria resistance to the drugs currently used in the therapeutics is the main cause of TB resurgence. In view of this severe situation, the new and selective anti-TB design is of utmost importance. Fatty acid biosynthesis is a prokariontes and eucariontes biochemical process that supplies essential precursors for the assembly of important cellular componen (mais) ts, such as phospholipids, lipoproteins, lipopolysaccharides, mycolic acids and cellular envelope. However, the biochemical and functional differences between the bacterial and mammals' fatty acid synthetic pathway have endowed the mycobacterial enzymes with distinct properties. These provide valuable opportunities for structure- or catalytic mechanism-based design of selective inhibitors as novel anti-TB drugs with improved properties. The enoyl-reductases are essential enzymes in the fatty acids elongation pathway towards the mycolic acids, the main mycobacteria cell wall constituents, biosynthesis and so they are potential targets to the rational new antimycobacteria drug design. This paper highlights recent approaches regarding the design of new anti-TB agents, particularly, the enoyl-ACP reductase inhibitors.

Scientific Electronic Library Online (Portuguese)

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Planejamento experimental no estudo da maximização do teor de resíduos em blocos e revestimentos cerâmicos/ Experimental design to maximize the waste content in ceramic bricks and tiles

Campos, L. F. A.; Menezes, R. R.; Lisboa, D.; Santana, L. N. L.; Neves, G. A.; Ferreira, H. C.
2007-12-01

Resumo em português A utilização de planejamentos experimentais para o estudo de misturas encontra uma grande gama de aplicações tanto em pesquisas laboratoriais como em trabalhos de desenvolvimento industrial. Assim, este trabalho tem por objetivo utilizar o planejamento experimental aplicado ao estudo de misturas para avaliar a potencialidade do uso conjunto dos resíduos do beneficiamento do caulim e da serragem do granito para a produção de blocos e revestimentos cerâmicos. Utiliz (mais) ando o planejamento experimental foram formuladas determinadas composições com as matérias-primas. As matérias-primas foram misturadas em determinadas proporções e confeccionados corpos de prova por extrusão e por prensagem uniaxial. Os corpos de prova foram queimados e, em seguida, determinou-se sua absorção de água e módulo de ruptura à flexão. Foram ajustados modelos matemáticos de regressão relacionando a absorção de água e o módulo de ruptura com as proporções das matérias-primas. Os resultados mostraram que o procedimento de planejamento experimental utilizado permite maximizar a quantidade de resíduo incorporado às formulações para blocos e revestimentos cerâmicos, sendo possível a incorporação de teores de resíduos de até 50% em formulações para a produção de blocos cerâmicos e de ate 40% em composições para a produção de revestimentos cerâmicos. Resumo em inglês The use of experimental design to the study of mixtures has found a wide range of applications, even in laboratory scale or in industrial development works. Thus, this work has as aim apply the experimental design used in the study of mixtures to evaluate the suitability of use kaolin processing waste and granite sawing waste together for the production of ceramic bricks and tiles. Based on the raw materials, specific formulations were developed using the experimental des (mais) ign. The raw materials were mixed and sample bodies were produced using extrusion and uniaxial pressing. The sample bodies were fired and characterized in terms of water absorption and mechanical strength. Regression models were adjusted relating the water absorption and mechanical strength with the amount of raw materials. The results showed that the methodology of experimental design maximize the content of wastes incorporated in ceramic bricks and tiles formulations. Formulations containing up to 50% waste can be used for the production of ceramic bricks, and formulations, which contained up to 40% of waste can be used for the production of ceramic tiles.

Scientific Electronic Library Online (Portuguese)

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Delineamentos intrassujeitos nas dissertações e teses do PPGEES/UFSCAR/ Single-subject research design in theses and dissertations of the PPGEES/UFSCAR

Lourenço, Érica Aparecida Garrutti de; Hayashi, Maria Cristina Piumbato Innocentini; Almeida, Maria Amélia de
2009-08-01

Resumo em português Os delineamentos experimentais intrassujeitos constituem importante alternativa metodológica para questionamentos inerentes às pesquisas de intervenção, desenvolvidas na Educação Especial. Em vista disso, objetivou-se identificar e caracterizar as dissertações e teses com delineamentos intrassujeitos, produzidas no Programa de Pós-Graduação em Educação Especial (PPGEEs) da Universidade Federal de São Carlos (UFSCar), desde a implementação do referido progr (mais) ama, em 1978, até o ano de 2004. Inicialmente, efetuou-se a leitura dos títulos, resumos e outros elementos pré-textuais das dissertações e teses para identificar as que empregaram delineamentos intrassujeitos. A seguir, coletaram-se informações sobre a caracterização da população-alvo, do tema e dos procedimentos metodológicos: tipo de delineamento intrassujeito, variáveis dependente e independente, presentes na introdução, no método e nos resultados das dissertações e teses selecionadas. Os resultados revelaram que, dentre as 21 dissertações e teses com delineamentos intrassujeitos, a maioria fez uso do delineamento A-B e do delineamento de linha de base múltipla, no total de 43% e 38%, respectivamente. As demais dissertações e teses (19%) apresentaram os delineamentos A-B-A e múltiplas sondagens. Finalizando, os delineamentos intrassujeitos podem possibilitar suficiente demonstração do controle experimental e impacto das intervenções, e sua utilização em pesquisas sobre Educação Especial pode minimizar as lacunas no conhecimento desta temática. Resumo em inglês Experimental single-subject research design constitutes an important methodology alternative for issues related to intervention research developed in Special Education. The objective of this study was to identify and characterize theses and dissertations that employed single-subject research design in the Graduate Program of Special Education at the Federal University of São Carlos (UFSCar), from the implementation of the referred program, in 1978, up to 2004. Initially, (mais) titles, abstracts, and other pre-text elements were scanned in theses and dissertations to identify the ones that employed single-subject research design. Next, information was collected about the characterization of the targeted public, the theme, and methodological procedures: type of design, dependent and independent variables, to be found in the introduction, method, and results of the selected theses and dissertations. The results showed that among the 21 theses and dissertations that employed single-subject design, most used A-B and multiple baseline designs, in a total of 43% and 38%, respectively. The other theses and dissertations (19%) used ABA and multiple probe designs. In conclusion, single-subject research design can effectively demonstrate experimental control and impact of interventions. Their use in Special Education research can minimize the gap in knowledge of this theme.

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Aplicação da metodologia de planejamento fatorial e análise de superfícies de resposta para otimização da fermentação alcoólica/ Application of the factorial design and response surface methodology for optimization of alcoholic fermentation

Silva, José Alexsandro; Damasceno, Bolívar Ponciano Goulart de Lima; Silva, Flávio Luiz Honorato da; Madruga, Marta Suely; Santana, Davi Pereira de
2008-01-01

Resumo em inglês In the present work, the influence of the amount of nitrogen and phosphorus and degrees Brix on the yield and productivity of alcoholic fermentation has been evaluated. The methodology used was factorial design and response surface analysis. Within the range studied only for phosphorus a statistically significant effect was observed. The broth of sugar cane of the CB 453 variety already possessed enough nitrogen for the fermentation. The mathematical and empirical model w (mais) as validated for productivity and not for yield. The concentration of alcohol produced in the fermentation was not enough to cause cellular growth inhibition.

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Avaliação comparativa da adaptação de lentes de contato rígidas gás-permeáveis Monocurvas e Bicurvas (desenho Soper-McGuire) em pacientes portadores de ceratocone: um estudo prospectivo e randomizado/ Fitting Monocurve and Bicurve (Soper-McGuire design) rigid gas-permeable contact lenses in keratoconus patients: a prospective randomized comparative clinical trial

Coral-Ghanem, Cleusa; Alves, Milton Ruiz
2008-06-01

Resumo em português OBJETIVOS: Avaliar comparativamente aspectos clínicos da adaptação de lentes rígidas gás-permeáveis Monocurva externa e Bicurva, desenho Soper-McGuire, em pacientes portadores de ceratocone. MÉTODOS: Estudo clínico, prospectivo e randomizado, com acompanhamento mínimo de seis meses, de dois grupos compostos por 63 indivíduos, um adaptado com Monocurva externa e o outro com Bicurva Soper-McGuire. RESULTADOS: No decorrer do estudo, observou-se redução do número (mais) de olhos com cones avançados e centrais adaptados com Monocurva externa e aumento de número de adaptados com Bicurva Soper-McGuire. A Monocurva determinou aplanamento do meridiano mais plano e do mais curvo da córnea, ao passo que a Soper-McGuire determinou encurvamento do meridiano mais plano e aplanamento do mais curvo da córnea. Houve redução da acuidade visual corrigida com lentes no grupo Monocurva. A estimativa de permanência no uso da lente inicialmente adaptada foi igual a 60,32% no grupo Monocurva e 71,43% no grupo Soper-McGuire. CONCLUSÕES: O estudo mostrou que devido às variações observadas na topografia corneal, o mesmo desenho de lente de contato usado no início da adaptação não proporcionou a melhor relação lente X córnea com o passar do tempo. A lente Soper-McGuire demonstrou melhor desempenho clínico do que a Monocurva em ceratocones avançados e centrais. Resumo em inglês PURPOSE: To evaluate the clinical performance of Monocurve and Bicurve (Soper-McGuire design) rigid gas-permeable contact lens fitting in patients with keratoconus. METHODS: A prospective and randomized comparative clinical trial was conducted with a minimum follow-up of six months in two groups of 63 patients. One group was fitted with Monocurve contact lenses and the other with Bicurve Soper-McGuire design. Study variables included fluoresceinic pattern of lens-to-corne (mais) a fitting relationship, location and morphology of the cone, presence and degree of punctate keratitis and other corneal surface alterations, topographic changes, visual acuity for distance corrected with contact lenses and survival analysis for remaining with the same contact lens design during the study. RESULTS: During the follow-up there was a decrease in the number of eyes with advanced and central cones fitted with Monocurve lenses, and an increase in those fitted with Soper-McGuire design. In the Monocurve group, a flattening of both the steepest and the flattest keratometric curve was observed. In the Soper-McGuire group, a steepening of the flattest keratometric curve and a flattening of the steepest keratometric curve were observed. There was a decrease in best-corrected visual acuity with contact lens in the Monocurve group. Survival analysis for the Monocurve lens was 60.32% and for the Soper-McGuire was 71.43% at a mean follow-up of six months. CONCLUSIONS: This study showed that due to the changes observed in corneal topography, the same contact lens design did not provide an ideal fitting for all patients during the follow-up period. The Soper-McGuire lenses had a better performance than the Monocurve lenses in advanced and central keratoconus.

Scientific Electronic Library Online (Portuguese)

51

Planejamento fatorial aplicado à digestão de amostras de feijão assistida por radiação microondas/ Factorial design employed for microwave-assisted digestion of bean samples

Costa, Letícia M.; Korn, Maria das Graças A.; Castro, Jacira T.; Santos, Wagna P. C.; Carvalho, Edivan V.; Nogueira, Ana Rita A.
2006-02-01

Resumo em inglês The use of factorial design was evaluated for optimization of focused-microwave-assisted digestion of bean samples. Calcium, Fe, Mg, Mn and Zn percentual recoveries were determined in digestates after focused-microwave-assisted digestion according to factorial design procedures. A cavity microwave digestion was carried out to certify the elemental compositions obtained. The accuracy was checked using a standard reference material, the NIST SRM 8433 - Corn Bran. Results ar (mais) e in agreement with certified values at the 95% confidence limit when the Student t-test was used. Volumes of nitric and sulfuric acid, temperature, and the interplay between HNO3 and H2SO4 initial volumes were significant variables according to P-values in the analysis of variance (ANOVA).

Scientific Electronic Library Online (Portuguese)

52

Aplicação de planejamento fatorial a protocolo de extração e fixação de sulfetos volatilizáveis por acidificação (SVA) em amostras de sedimento/ Factorial design used on the extraction and fixation of acid volatile sulfides (AVS) from sediment samples

Schnitzler, Danielle Caroline; Grassi, Marco Tadeu; Quinaia, Sueli Pércio
2009-01-01

Resumo em inglês The AVS is defined operationally as acid volatile sulfide, which is a controlling phase on the partition of some metallic species in sediments. A Factorial design was evaluated by means of 16 experiments and using four variables: temperature, extraction time, N2 flow, and volume of the S2- collection solution. The factors that contributed to the efficiency of the process were the extraction time and the N2 flow. Trapping of S2- was efficient in AAB. The S2- was quantified (mais) using a potentiometric procedure. Recovery tests for S2- concentrations varying from 1×10-5 to 1×10-4 mol L-1 were in the range from 93 to 116%.

Scientific Electronic Library Online (Portuguese)

54

Efeito do desenho em amostragem de conglomerado para estimar a distribuição de ocupações entre trabalhadores/ Effect of design in cluster sampling to estimate the distribution of occupations among workers

Cordeiro, Ricardo
2001-02-01

Resumo em português OBJETIVO: Descrever o desenho amostral efetuado para estimar a distribuição de população economicamente ativa, apresentando o efeito do desenho encontrado. MÉTODOS: A partir de um cadastro universal, foram amostrados 4.782 domicílios residenciais do município de Botucatu, SP, por intermédio de amostra aleatória sistemática de conglomerados, realizada entre junho e julho de 1997. RESULTADOS: Os 4.782 domicílios residenciais corresponderam a 17.219 moradores de B (mais) otucatu, entre junho e julho de 1997. Em decorrência da perda de heterogeneidade da distribuição das ocupações dentro dos domicílios amostrados, o efeito do desenho encontrado variou entre 1,00 e 1,96. CONCLUSÕES: Com base nos resultados obtidos, sugere-se que, em amostras de conglomerados para estimativas da distribuição de ocupações em populações economicamente ativas, o efeito do desenho seja estimado como e=1,50, para amostragens em zona urbana; e e=2,00 para amostragens em zona rural. Resumo em inglês OBJECTIVE: To describe the effect of design associated with a sample survey carried out to estimate the distribution of occupations within an economic active population. METHODS: A cluster sample of households, chosen from a comprehensive directory via systematic random sampling, was performed including 4,782 of all residences in Botucatu, Brazil, between June and July 1997. RESULTS: Of the 4,782 households, 17,219 subjects were assessed. Due to the loss of distribution h (mais) eterogeneity of the occupations within the households, the effect of design found ranged from 1.00 to 1.96. CONCLUSIONS: The results suggest that when planning similar studies aiming at estimating the distribution of occupations among economic active populations, the effect of design should be estimated as e=1.50 for surveys in urban areas, and e=2.00 for surveys in rural areas.

Scientific Electronic Library Online (Portuguese)

55

Efeito do desenho em amostragem de conglomerado para estimar a distribuição de ocupações entre trabalhadores/ Effect of design in cluster sampling to estimate the distribution of occupations among workers

Cordeiro, Ricardo
2001-02-01

Resumo em português OBJETIVO: Descrever o desenho amostral efetuado para estimar a distribuição de população economicamente ativa, apresentando o efeito do desenho encontrado. MÉTODOS: A partir de um cadastro universal, foram amostrados 4.782 domicílios residenciais do município de Botucatu, SP, por intermédio de amostra aleatória sistemática de conglomerados, realizada entre junho e julho de 1997. RESULTADOS: Os 4.782 domicílios residenciais corresponderam a 17.219 moradores de B (mais) otucatu, entre junho e julho de 1997. Em decorrência da perda de heterogeneidade da distribuição das ocupações dentro dos domicílios amostrados, o efeito do desenho encontrado variou entre 1,00 e 1,96. CONCLUSÕES: Com base nos resultados obtidos, sugere-se que, em amostras de conglomerados para estimativas da distribuição de ocupações em populações economicamente ativas, o efeito do desenho seja estimado como e=1,50, para amostragens em zona urbana; e e=2,00 para amostragens em zona rural. Resumo em inglês OBJECTIVE: To describe the effect of design associated with a sample survey carried out to estimate the distribution of occupations within an economic active population. METHODS: A cluster sample of households, chosen from a comprehensive directory via systematic random sampling, was performed including 4,782 of all residences in Botucatu, Brazil, between June and July 1997. RESULTS: Of the 4,782 households, 17,219 subjects were assessed. Due to the loss of distribution h (mais) eterogeneity of the occupations within the households, the effect of design found ranged from 1.00 to 1.96. CONCLUSIONS: The results suggest that when planning similar studies aiming at estimating the distribution of occupations among economic active populations, the effect of design should be estimated as e=1.50 for surveys in urban areas, and e=2.00 for surveys in rural areas.

Scientific Electronic Library Online (Portuguese)

56

Planejamento estatístico de experimentos como uma ferramenta para otimização das condições de biossorção de Cu(II) em batelada utilizando-se casca de nozes pecã como biossorvente/ Statistical design of experiments as a tool for optimizing the batch conditions of Cu(II) biosorption using pecan nutshells as biosorbent

Brasil, Jorge L.; Vaghetti, Júlio C. P.; Royer, Betina; Santos Jr, Araci A. dos; Simon, Nathalia M.; Pavan, Flávio A.; Dias, Silvio L. P.; Lima, Eder C.
2007-06-01

Resumo em inglês In order to reduce the total number of experiments for achieving the highest amount of adsorbed Cu2+ (qmax) using pecan nutshells (Carya illinoensis) as biosorbent, a full 2(4) factorial design with two central points was carried out (mass of biosorbent- m, pH, initial metallic ion concentration- C0, time of contact- t). In order to continue the optimization of the system, a central composite surface analysis design with two factors and five central points was carried out (mais) . The maximum amount of Cu2+ taken up by the pecan nutshells was 20 mg g-1. These results were confirmed by determining a Cu2+ isotherm using the best conditions attained by the statistical design of experiments.

Scientific Electronic Library Online (Portuguese)

57

New e-learning objects for the mathematics courses from engineering degrees : design and implementation of question banks in Maple T.A. using LaTeX

Pereira, Rui M. S.; Brito, Irene; Machado, Gaspar Q.; Malheiro, Teresa; Vaz, Estelita; Flores, Maria Assunção; Figueiredo, Jorge Manuel

CMAT Mathematics at an undergraduate level is frequentlypresented to the students in quite a traditional way. Whenimplementing the Bologna education reform in Portugueseuniversities, the number of contact hours of the courses decreased(considerably in some cases), therefore increasing the need of...

DRIVER (Portuguese)

58

Aplicação do delineamento simplex-centroide no estudo da cinética da oxidação de biodiesel B100 em mistura com antioxidantes sintéticos/ The simplex-centroid design applied to study of the kinetics of the oxidation of B100 biodiesel in blend with synthetic antioxidants

Borsato, Dionísio; Dall'Antonia, Luiz Henrique; Guedes, Carmen Luísa B.; Maia, Elaine Cristina R.; Freitas, Heverson Renan de; Moreira, Ivanira; Spacino, Kelly Roberta
2010-01-01

Resumo em inglês Antioxidants are an alternative to prevent or slow the degradation of the biofuel. In this study, it was evaluated the oxidative stability of B100 biodiesel from soybean oil in the presence of three commercial synthetic antioxidants, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT) and tert-butylhydroquinone (TBHQ), pure or blended, from the experimental design of simplex-centroid mixture. The reaction order and rate constant were also calculated for all tes (mais) ts. The treatment containing pure TBHQ proved to be the most effective, proven by design, the optimum mix obtained and the rate constant. Binary and ternary mixtures containing TBHQ also showed appreciable antioxidant effect.

Scientific Electronic Library Online (Portuguese)

59

Projeto conceitual de componentes de um forno industrial por meio da integração entre a engenharia reversa e o DFMA/ Conceptual design of components of an industrial oven through the integration between the reverse engineering and DFMA

Mello, Carlos Henrique Pereira; Guedes, Filipe Natividade; Silva, Carlos Eduardo Sanches da; Gorgulho Júnior, José Hamilton Chaves; Xavier, Amanda Fernandes
2010-01-01

Resumo em português O tema deste artigo é o estudo da integração da engenharia reversa (ER) e o projeto para manufatura e montagem (DFMA) como ferramentas de suporte ao projeto conceitual de produtos. A partir de uma fundamentação teórica sobre esses conceitos, o presente trabalho visa analisar a adequação de um modelo para a utilização integrada do DFMA com a prototipagem rápida em uma abordagem de ER no projeto de um novo sistema de fechadura para forno industrial e recomendar m (mais) elhorias no projeto conceitual do novo sistema de fechadura. O método de pesquisa empregado foi a pesquisa-ação, uma vez que o pesquisador buscava resolver um problema identificado dentro do objeto de estudo em parceria com a equipe de profissionais da empresa. Os resultados das recomendações para o projeto conceitual apresentam redução, especialmente, no custo, no tempo para fabricação e no tempo para montagem. Conclui-se que o modelo de integração estudado foi adequado para apoiar o processo de projeto do sistema de fechadura proposto por meio da ER. Resumo em inglês This study focuses on investigating the integration between reverse engineering (RE) and design for manufacture and assembly (DFMA) as tools to support the conceptual design of products. From a literature review of these concepts, this research aims to examine the adequacy of a model for the integrated use of DFMA and rapid prototyping in an ER approach in the design of a new locking system for an industrial oven and recommend improvements in conceptual design of a new lo (mais) ck system. The research method employed was action-research since the aim was to solve a problem identified in the company, object of study, in partnership with the company team. The results of the conceptual design indicate reductions, especially in cost, time to manufacture, and assembly time. It was concluded that the integration model studied was adequate to support the design process of the locking system proposed by the ER approach.

Scientific Electronic Library Online (Portuguese)

60

Ensaios clínicos aleatórios de larga escala em medicina cardiovascular perioperatória: uma proposta para delineamento, condução e gerenciamento eficiente/ Large randomized controlled trials in perioperative cardiovascular medicine: a proposal for the design, conduct and efficient management/ Ensayos clínicos aleatorios y a larga escala en medicina cardiovascular perioperatoria: una propuesta para delineamiento, conducción y gestión eficiente

Berwanger, Otavio; Suzumura, Erica Aranha; Devereaux, PJ
2009-05-01

Resumo em português O número de pacientes submetidos a cirurgias não-cardíacas está aumentando no mundo todo. A fim de ministrar uma assistência eficiente aos pacientes durante a cirurgia, precisamos melhorar nosso conhecimento sobre como evitar eventos cardiovasculares perioperatórios maiores durante a cirurgia não-cardíaca. Para atingir este objetivo, é necessário realizar ensaios clínicos aleatórios, os quais podem fornecer resultados conclusivos e confiáveis neste campo. Est (mais) a revisão narrativa descreve uma proposta para o delineamento, condução e gerenciamento de ensaios clínicos aleatórios de larga escala em medicina cardiovascular perioperatória. Resumo em espanhol El número de pacientes sometidos a cirugías no-cardiacas está aumentando en todo el mundo. A fin de impartir una asistencia eficiente a los pacientes durante la cirugía, necesitamos mejorar nuestro conocimiento sobre como evitar eventos cardiovasculares perioperatorios mayores durante la cirugía no-cardiaca. Para alcanzar este objetivo, es necesario realizar ensayos clínicos aleatorios que pueden proveer resultados conclusivos y confiables en este campo. Esta revisi (mais) ón narrativa describe una propuesta para el delineamiento, la conducción y la gestión de ensayos clínicos aleatorios y a larga escala en medicina cardiovascular perioperatoria. Resumo em inglês The number of patients undergoing noncardiac surgery is growing worldwide. To optimally assist patients during the perioperative period, we must improve our knowledge of how to prevent major perioperative cardiovascular events around the time of noncardiac surgery. To achieve this goal there is a need for large randomized controlled trials that can provide reliable and conclusive results in this field. This narrative review describes a proposal for the design, conduct and management of large controlled trials in perioperative cardiovascular medicine.

Scientific Electronic Library Online (Portuguese)

61

Designing a set of specifications for a 9th grade-speaking test in Portuguese secondary schools Criação de um conjunto de especificações para a elaboração de testes de speaking para o 9º ano do ensino básico português

Pavao, Marilia

The topic of this study regards speaking assessment and the research is focused on the possibility of obtaining a set of specifications that helps my school’s teachers design valid and reliable speaking assessment tools. I describe my school’s context and analyse the reasons why there is the need to...

DRIVER (Portuguese)

62

Bifosfonatos (BFs) como transportadores osteotrópicos no planejamento de fármacos dirigidos/ Bisphosphonates as osteotropic carriers for designing site-directed drugs

Castro, Lúcia Fioravanti; Silva, Antonio Távora de Albuquerque; Chung, Man-Chin; Ferreira, Antonio Gilberto; Ferreira, Elizabeth Igne
2004-06-01

Resumo em inglês Drug therapy involving bone tissue diseases is difficult, calling for the design of specific drugs. The present paper is a brief review of a new site-directed system termed ODDS (osteotropic drug delivery system), based on a latenciation process, using bisphosphonates as bone carriers. This is an important tool for the rational prodrug design for obtaining selective drugs.

Scientific Electronic Library Online (Portuguese)

63

Interface Evaluation of Portuguese and International News Websites


In this paper, we present an observational descriptive study of news websites, focusing on aspects related to interface design, accessibility and usability. Interface design was evaluated by measuring selected areas from web pages screenshots. As for the accessibility, automatic testing tools were u...

DRIVER (Portuguese)

64

Desenvolvimento e aplicação de modelo descritivo-normativo para análise de websites/ Development and application of a descriptive/ normative framework for website analysis

Padovani, Stephania; Spinillo, Carla Galvão; Gomes, Ítalo Mata de Araújo
2009-01-01

Resumo em português Este estudo tem como objetivo desenvolver um modelo descritivo-normativo para análise de websites. Inicialmente, explicamos no que consiste a análise de similares, quais os objetivos e benefícios desse estágio no processo de design. Em seguida, descrevemos alguns modelos descritivos e normativos voltados à análise de sistemas de informação e representações gráficas, encontrados na literatura das áreas de design da informação e ergonomia. Por fim, apresentamo (mais) s uma proposta de modelo descritivo-normativo a ser utilizado na fase de análise de similares em projetos de websites, exemplificando sua aplicação em um website do gênero informativo. Resumo em inglês In this study, we propose a descriptive and normative framework for website analysis. To begin with, we explain competitor analysis, outlining the aims and benefits of this stage within the design process. After that, we describe a range of descriptive and normative frameworks aimed at analyzing information systems and graphic representations found in Ergonomics and Information Design literature. Finally, we propose a new descriptive and normative framework to be used dur (mais) ing the competitor analysis phase in website design, illustrating its application with an informative website.

Scientific Electronic Library Online (Portuguese)

65

Repair of stone masonry arch bridges

Oliveira, Daniel V.; Lourenço, Paulo B.

This paper deals with the analysis and design of repair measures concerning twoPortuguese masonry arch bridges, carried out at University of Minho. The first example isrelated with a masonry bridge built in the 19th century, composed of six pointed stone archesand located in the center of Portuga...

DRIVER (Portuguese)

66

Desenvolvimento de equipamento de auxílio à visão subnormal/ Development of a low vision aid device

Bonatti, Fernanda Alves da Silva
2006-04-01

Resumo em português OBJETIVO: Design de equipamento de uso para perto para portador de visão subnormal. MÉTODOS: Verificar os principais produtos de auxílio à visão subnormal, identificando problemas que o usuário possa ter ao usá-los e por meio de possíveis intervenções do design fazer um projeto que possa contemplar suas necessidades. RESULTADOS: Foi desenvolvido um protótipo compreendido por prancha de leitura em que pode ser conectado o cabo de uma lupa, que se movimenta horiz (mais) ontal e verticalmente possibilitando o acompanhamento de uma linha do texto. CONCLUSÃO: O equipamento desenvolvido vem de encontro às necessidades visuais e de manuseio de portadores de visão subnormal para perto, incorporando facilidades para a leitura e escrita. Resumo em inglês PURPOSE: To develop the design of a near low vision aid that has esthetic and functional qualities intending to give its user a better life quality. METHODS: To verify low vision people's main needs concerning the current devices for near distance; to identify possible design interventions to make a project that fulfills their main needs. RESULTS: A prototype having a reading stand tied to the end of a magnifier that moves horizontally and vertically permitting the horizo (mais) ntal reading of a text line was developed. CONCLUSIONS: The developed device fulfills low vison people's visual and handling needs for near distance, contributing to the easiness to read and write.

Scientific Electronic Library Online (Portuguese)

67

Inverted pendulum virtual control laboratory

Lima, José; Gonçalves, José; Costa, Paulo; Moreira, António

This paper describes a tool for interactive learning that can be used to improve control systems design. The developed system is ready to use and allows testing different control methods. It can be used by students for problem solving and individual learning. The virtual control laboratory was imple...

DRIVER (Portuguese)

68

The impact of privatisation on wages : evidence from the Portuguese banking industry

Monteiro, Natália

We present quasi-experimental estimates of the effect of privatisation on wages in the Portuguesebanking sector for the period 1989-97. The design of the reform and the nature of dataset employedprovide an important opportunity to analyse the effects of privatisation on different demographic grou...

DRIVER (Portuguese)

69

How small can a dwelling be? A revision of Portugese building regulations

Costa Branco De Oliveira Pedro, J.A.

Purpose – The purpose of this paper is to study the minimum necessary net internal area of dwellings that should be established by Portuguese building regulations.Design/methodology/approach – The following tasks are carried out: selecting the furniture andequipment necessary for each dwelling; de...

DRIVER (Portuguese)

70

Friction properties of moulding thermoplastics Test equipment

Pouzada, A. S.; Ferreira, Eduardo Campos; Pontes, A. J.

During the ejection phase of the injection moulding cycle the parts are mechanically forced to separate from the moulding surfaces, this aspect being more relevant with deep cores. The design of the ejection system depends on factors such as the draft angles, the surface finish, and the properties o...

DRIVER (Portuguese)

71

Portuguese method for building condition assessment

Costa Branco De Oliveira Pedro, J.A.; Vasconcelos de Paiva, J.; Vilhena, A.

Purpose – The purpose of this paper is to discuss a method for assessing the condition of buildings.The method was developed in Portugal as part of a new Urban Tenancy Regime approved in 2006.Design/methodology/approach – The method was developed in six phases, namely: definition ofobjectives; an...

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72

Despolarizador eletrônico de eletrodos/ Eletronic depolarizer for electrodes

Li, Rosamaria Wu Chia; Campioti, Decio Arrais; Pardini, Vera Lúcia; Gruber, Jonas
1999-12-01

Resumo em inglês This paper presents the design of a simple apparatus that periodically switches off both working and auxiliary electrodes short-circuiting them for a couple of seconds. Depolarization takes place and the initial current is re-established.

Scientific Electronic Library Online (Portuguese)

73

Alavancando pesquisa, desenvolvimento e inovação no setor de autopeças: análise e propostas a partir de survey e estudo qualitativo focado/ Leveraging research, development and innovation in the Brazilian autoparts industry

Salerno, Mario Sergio; Miranda, Zil; Kamisaki, Fernando Yutaka; Maluta, Geovani
2010-12-01

Resumo em português O texto discute maneiras de incentivar a atividade inovadora de engenharia de projeto de produto no setor automotivo, particularmente no segmento de autopeças. Utiliza instrumentos de pesquisa científica para fundamentar a sugestão de instrumentos de política pública. Trabalha dados secundários e realiza survey e entrevistas em profundidade, de cunho qualitativo. Baseia-se no conceito de sede de projeto desenvolvido por Salerno et al. (2009), que relaciona o control (mais) e das especificações de projeto (part numbers) com a escolha de fornecedores e, portanto, com o enraizamento da cadeia produtiva num determinado espaço nacional ou regional. Isso confere importância ímpar à atividade de projeto de produto e a define como alavancadora da produção no setor. Propõe a criação de centros de pesquisa pré-competitiva, centros de serviços de ferramentaria e programa massivo de extensão gerencial/organizacional para PMEs, com consultoria dentro das empresas, para aumentar sua capacitação e integrá-las em instrumentos públicos de incentivo à inovação. Resumo em inglês The paper discusses how to leverage product design activities in the automotive sector, with focus on the components industry. Scientific research methods are used to anchor public policy suggestions. It is based on the concept of design headquarters (SALERNO et al., 2009), that relates design specifications and part numbers control with the power to choose suppliers - with local or national supply chain roots. It gives upmost importance to product design activity, which (mais) may be considered as an inductor of local production. The paper proposes the creation of precompetitive research centers, service centers for tool and die design, and a massive extension of the organizational/managerial program, with experts/consultants visiting plants to suggest improvements and to integrate companies with public agencies tasked with promoting innovation.

Scientific Electronic Library Online (Portuguese)

74

Determination of stress intensity factors along cracked surfaces in piping elbows structures

Fonseca, E.M.M.; Melo, F.J.M.Q. de; Valente, R.A.F.

Piping elbows represent an essential role in pipework systems. These structures are part of the plantprocess in all industries. High safety standards in design are inherent to these projects due to complexmechanical or thermal loading. When these accessories carry defects, project engineers should...

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75

Controlled delivery achieved with bi-layer matrix devices produced by co-injection moulding

Vaz, Cláudia M.; Doeveren, P. F. N. M. van; Dias, Gustavo R.; Reis, R. L.; Cunha, A. M.

The aim of this study was to design new soy protein-based bi-layered co-injection moulded matrix systems aimed to achieve controlled drug delivery. The devices consisted of a drug-free outer layer (skin) and a drug-containing core. The systems overcame the inherent disadvantage of non-linear release...

DRIVER (Portuguese)

76

Utilização de diferentes tipos de policloretos de alumínio para purificação de hidrolisado de bagaço de cana através da técnica de coagulação e floculação/ Use of different kinds of aluminum polychloride in the sugarcane bagasse hydrolyzate purification through coagulation and flocculation technics

Noronha, Leonardo de Lima; Fonseca, Christiane Reis; Silva, Cássia Cavalcanti da; Silva, Messias Borges; Faria, Luís Fernando Figueiredo
2010-01-01

Resumo em inglês In order to investigate the action of the flocculating agents Panfloc and Panclar a full factorial design 2³ and a Central Composite design 2² were carried out. The control variables were the flocculant concentration, pH and temperature. The response variables were phenolic compounds reduction and spectral area reduction. The best conditions of treatment was hydrolyzate at pH 9 for both coagulants, but the use of Panfloc was more effective in the phenolic compounds reduction (73.9%) and spectral area reduction (65.8%).

Scientific Electronic Library Online (Portuguese)

77

Sistema de baixo custo para nucleação de pré-trincas por fadiga em corpos de prova de tenacidade à fratura

Guimarães, V.A.; Hein, L.R.O.; Zangrandi Filho, J.
2001-07-01

Resumo em inglês Fracture toughness testing becomes a very important parameter for mechanical design and maintenance of parts and structures. This work presents the design and construction of a machine device to perform the pre-crack nucleation on SE(B) specimens for fracture toughness testing. Employing this device, it is possible to test materials for K Ic, CTOD and J Ic in a conventional tensile test equipment, assisted by a data acquisition system. The device is based on the concept o (mais) f loading from an eccentric mechanism, controlling the displacement by means of a marking ring. The main contribution of this work is the low cost technology offered for laboratories, without high priced servo-hydraulic testing machines, giving them autonomy for the execution of fracture toughness tests. The experimental results satisfied the expectation about crack nucleation on SE(B) and applied loading control.

Scientific Electronic Library Online (Portuguese)

78

A química dos ésteres de fosfato/ The chemistry of phosphate esters

Domingos, Josiel B.; Longhinotti, Elisane; Machado, Vanderlei Gageiro; Nome, Faruk
2003-10-01

Resumo em inglês This work summarizes important aspects of the chemistry of phosphate esters, with special emphasis on: i) advances in the design of enzymatic models for phosphatases; and ii) nerve agents and currently used strategies for detoxification. The physical organic chemical aspects that are responsible by the reactivity of phosphate esters are also discussed.

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79

A combustão catalítica do metano: estudo estatístico do efeito das variáveis de preparação e pré-tratamento de catalisadores de paládio suportado sobre a atividade catalítica/ The catalytic combustion of methane: statistical study of preparation and pretreatment conditions of palladium supported catalysts and their relationship with catalytic activity

Rocha, Maria da Graça Carneiro da; Frety, Roger; Lanteri, Pierre
2001-04-01

Resumo em inglês The catalytic combustion of methane on alumina supported palladium catalysts was studied. It has been reported that the activity of the catalyst increases with its time on line, despite of an increase of the palladium particle size. However, different preparation, pretreatment and testing conditions can be the reason for the observed different results. An experimental design, which allows to verify the influence of several parameters at the same time with a good statistic (mais) al quality, was used. A Plackett-Burman design was selected for the screening of the variables which have an effect on the increase of the catalyst activity.

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80

Avaliação de quatro alternativas de análise de experimentos em látice quadrado, quanto à estimação de componentes de variância/ Evaluation of four alternatives of analysis of experiments in square lattice, with emphasis on estimate of variance component

SILVA, HEYDER DINIZ; FERREIRA, DANIEL FURTADO; PACHECO, CLESO ANTÔNIO PATTO
2000-01-01

Resumo em português Estudou-se, no presente trabalho, a eficiência das seguintes alternativas de análise de experimentos realizados em látice quanto à precisão na estimação de componentes de variância, através da simulação computacional de dados: i) análise intrablocos do látice com tratamentos ajustados (primeira análise); ii) análise do látice em blocos casualizados completos (segunda análise); iii) análise intrablocos do látice com tratamentos não-ajustados (terceira a (mais) nálise); iv) análise do látice como blocos casualizados completos, utilizando as médias ajustadas dos tratamentos, obtidas a partir da análise com recuperação da informação interblocos, tendo como quadrado médio do resíduo a variância efetiva média dessa análise do látice (quarta análise). Os resultados obtidos mostram que se deve utilizar o modelo de análise intrablocos de experimentos em látice para se estimarem componentes de variância sempre que a eficiência relativa do delineamento em látice, em relação ao delineamento em Blocos Completos Casualizados, for superior a 100% e, em caso contrário, deve-se optar pelo modelo de análise em Blocos Casualizados Completos. A quarta alternativa de análise não deve ser recomendada em qualquer das duas situações. Resumo em inglês The efficiency of fur alternatives of analysis of experiments in square lattice, related to the estimation of variance components, was studied through computational simulation of data: i) intrablock analysis of the lattice with adjusted treatments (first analysis); ii) lattices analysis as a randomized complete blocks design (second analysis); iii); intrablock analysis of the lattice with non-adjusted treatments (third analysis); iv) lattice analysis as a randomized compl (mais) ete blocks design, using the adjusted means of treatments, obtained through the analysis of lattice with recuperation of interblocks information, having as the residual mean square, the average effective variance of this same lattice analysis (fourth analysis). The results showed that the intrablock model, must be used with adjusted treatments in lattice experiments to estimate variance components every time that the relative efficiency of the lattice design, relatively to the randomized complete blocks design be upper to 100%, and in the opposite case the randomized complete blocks design model must be used. The fourth alternative of analysis must not be recommended in both situations.

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81

O desenho como ferramenta universal. O contributo do processo do desenho na metodologia projectual.

Tavares, Paula
2009-12-01

Resumo em português Neste trabalho apresentamos o exercício do desenho como instrumento fundamental e fundacional na metodologia projectual do design, das artes visuais e também da arquitectura, dissecando-o como processo mental e físico. Da tradição da manualidade ao digital, da aquisição de competências às suas aplicações, abordaremos a contribuição do desenho na concepção e desenvolvimento de obras e produtos, da ideia ao desenho, da análise ao objecto (solução). Analisa (mais) mos, também, a relevância estruturante do desenho ao longo do sistema de ensino, com base na sua “universalidade”. Resumo em inglês This paper aims to present the exercise of drawing as basic and functional tool in the design methodology, visual arts, and also architecture, analysing it as a thinking and physical process. From sketching (free hand) tradition until digital, from the acquisition of drawing skills and its applications, we will approach its contribution in the conception and development of products and art, from the idea to concept sketches, from the analysis to object (solution). We also analyse the structural importance of drawing during education, based on its universality.

Scientific Electronic Library Online (Portuguese)

82

Estimativas obtidas de um levantamento complexo/ Estimates from a complex survey

Sousa, Maria Helena de; Silva, Nilza Nunes da
2003-10-01

Resumo em português OBJETIVO: Avaliar o impacto do plano de amostragem e o efeito da ponderação, em dados provenientes da "Pesquisa Nacional sobre Demografia e Saúde" (PNDS-96). MÉTODOS: Análise de dados secundários, realizada para a amostra do Estado de São Paulo, com 1.355 mulheres entrevistadas. Tomou-se como referência o plano de amostragem da "Pesquisa Nacional por Amostra de Domicílios" (PNAD), com o município como unidade primária de amostragem. O estimador razão e a aprox (mais) imação de Taylor para a variância foram calculados sobre as unidades primárias de amostragem e sobre diversas modalidades de ponderação. Intervalos de confiança, efeitos do desenho (Deff) e vícios foram os indicadores utilizados para avaliar precisão e validade. RESULTADOS: Para os quatro procedimentos, as diferenças da maior estimativa pontual de prevalência, em relação à menor, não ultrapassaram 10%. Quanto às amplitudes dos intervalos de confiança, as diferenças foram inferiores a 20%. Uso de camisinha e de injetável foram as variáveis que tiveram efeitos do delineamento superiores a 1,5 e vícios superiores a 0,20. CONCLUSÕES: A amostragem por conglomerados teve impacto sobre a precisão das estimativas, em duas das seis variáveis. Quanto à ponderação, não houve grande impacto sobre as estimativas. Resumo em inglês OBJECTIVE: To evaluate the impact of sampling design and the effect of weighting on data from the 1996 Brazilian National Survey on Demography and Health. METHODS: Secondary data analysis was performed using a sample of 1,355 interviewed women of the state of São Paulo. The sampling design of the National Survey of Household Sampling (PNAD) was used as a reference, and the municipality as primary sampling unit. The ratio estimator and Taylor's aproximation for variance w (mais) ere calculated using the primary sampling units and several modalities of weighting. The indicators used to evaluate precision and validity were confidence intervals, design effects (Deff) and biases. RESULTS: For the four procedures, the differences between upper and lower point estimates for prevalence were not greater than 10%. The differences on ranges of confidence intervals were less than 20%. Use of condom and hormone injection were the variables that showed design effects greater than 1.5 and biases greater than 0.20. CONCLUSIONS: According to the results, it could be said that the cluster sampling had an impact on the precision of the estimates for two out of six variables. The impact of weighting was not significant.

Scientific Electronic Library Online (Portuguese)

83

Estimativas obtidas de um levantamento complexo/ Estimates from a complex survey

Sousa, Maria Helena de; Silva, Nilza Nunes da
2003-10-01

Resumo em português OBJETIVO: Avaliar o impacto do plano de amostragem e o efeito da ponderação, em dados provenientes da "Pesquisa Nacional sobre Demografia e Saúde" (PNDS-96). MÉTODOS: Análise de dados secundários, realizada para a amostra do Estado de São Paulo, com 1.355 mulheres entrevistadas. Tomou-se como referência o plano de amostragem da "Pesquisa Nacional por Amostra de Domicílios" (PNAD), com o município como unidade primária de amostragem. O estimador razão e a aprox (mais) imação de Taylor para a variância foram calculados sobre as unidades primárias de amostragem e sobre diversas modalidades de ponderação. Intervalos de confiança, efeitos do desenho (Deff) e vícios foram os indicadores utilizados para avaliar precisão e validade. RESULTADOS: Para os quatro procedimentos, as diferenças da maior estimativa pontual de prevalência, em relação à menor, não ultrapassaram 10%. Quanto às amplitudes dos intervalos de confiança, as diferenças foram inferiores a 20%. Uso de camisinha e de injetável foram as variáveis que tiveram efeitos do delineamento superiores a 1,5 e vícios superiores a 0,20. CONCLUSÕES: A amostragem por conglomerados teve impacto sobre a precisão das estimativas, em duas das seis variáveis. Quanto à ponderação, não houve grande impacto sobre as estimativas. Resumo em inglês OBJECTIVE: To evaluate the impact of sampling design and the effect of weighting on data from the 1996 Brazilian National Survey on Demography and Health. METHODS: Secondary data analysis was performed using a sample of 1,355 interviewed women of the state of São Paulo. The sampling design of the National Survey of Household Sampling (PNAD) was used as a reference, and the municipality as primary sampling unit. The ratio estimator and Taylor's aproximation for variance w (mais) ere calculated using the primary sampling units and several modalities of weighting. The indicators used to evaluate precision and validity were confidence intervals, design effects (Deff) and biases. RESULTS: For the four procedures, the differences between upper and lower point estimates for prevalence were not greater than 10%. The differences on ranges of confidence intervals were less than 20%. Use of condom and hormone injection were the variables that showed design effects greater than 1.5 and biases greater than 0.20. CONCLUSIONS: According to the results, it could be said that the cluster sampling had an impact on the precision of the estimates for two out of six variables. The impact of weighting was not significant.

Scientific Electronic Library Online (Portuguese)

84

Os ambientes de aprendizagem na época da hipermídia e da Educação a Distância/ The learning environments in the era of hypermedia and distance education

França, George
2009-04-01

Resumo em português O presente artigo discute os ambientes de aprendizagem na época da hipermídia e da Educação a Distância. Para isso, contextualiza a questão das tecnologias e seus impactos na Educação. Apresenta as inserções da hipermídia e de suas aplicabilidades dentro deste cenário e descreve os Ambientes Hipermidiáticos, as suas funções e correlações nos processos de design instrucional. Faz uma reflexão contemporânea sobre a EaD, percebendo basicamente a inserção das linguagens e tecnologias e suas conexões com o campo da aprendizagem. Resumo em inglês This article discusses the learning environments in the era of hypermedia and Distance Education. For this, the issue of technology and its impact on education is contextualized. It presents the insertion of hypermedia and its applicability in this scenario and describes the hipermediatic environments, functions and correlations in the processes of instructional design. A contemporary reflection on distance education is brought about, having, as the basis, the integration of technologies and languages and its connections with the field of learning.

Scientific Electronic Library Online (Portuguese)

85

Eliciação e comunicação de requisitos em domínios disjuntos: estudo de caso para automação na área médica/ Requirements elcitation and communication in disjoint domains: case study in automation to surgical processes

Queiroz, Ricardo Alexandro de A.; Silva, José Reinaldo
2009-12-01

Resumo em português O final do século passado foi marcado por um crescente intresse nas fases preliminares do processo de design, especificamente na fase de requisitos e definição do problema. Na área de automação, o gerenciamento de requisitos é determinante para o sucesso dos projetos, embora grande parte do esforço no desenvolvimento de técnicas e métodos ter sido direcionado para as fases posteriores: o design e a implementação. Por não serem formais, os processos de elicia� (mais) �ão e análise de requisitos são subestimados por profissionais da área de automação, onde o formalismo é fundamental para a validação dos processos de controle, automação e supervisão. Em especial, quando os ambientes de desenvolvimeno e de aplicação são disjuntos, isto é, usuários e stakeholders pertencem a um domínio com pouca ou nenhuma interseção com a área da engenharia, informática e automação, os processos de eliciação e análise se tornam bastante complicados. Neste trabalho é apresentada uma proposta de sistematização do gerenciamento de requisitos para domínios disjuntos, adaptando técnicas já conhecidas ao processo de prototipagem virtual, consolidado após o início deste século. Um estudo de caso é apresentado onde o desenvolvimento se dá na área de Engenharia de Automação para aplicações em processos pertinentes à cirurgia de catarata. Para aproximar os domínios busca-se uma abordagem mais simplificada das técnicas de prototipagem virtual tornando o processo mais prático, sem no entanto abdicar do formalismo dos modelos. Os dados levantados foram obtidos com a colaboração do Hospital Santa Luzia, Salvador, Bahia, e do Instituto da Visão, UNIFESP, em São Paulo. Resumo em inglês By the end of 1990 the academy has experienced a remarkable growing in the interest on early design phases pushed by mass customization. In what concerns automation, requirement is a keyword since the detachment in the mechatronic approach is just the design process, although most of the development effort is still directed to the last design phases: optimization and implementation. In general, control and automation designers underestimate requirements elicitation and an (mais) alysis, mostly by its semiformal nature. That is understandable, since formal approaches are very important to processes that are supposed to be autonomous. Especially in the case where the developer and application environment are disjoints, that is, the domain of users and stakeholders is very distinct from the developer domain, elicitation could become a very complex process. In this work it is presented a systematic approach to requirements management in disjoint domains inspired in the known technique of virtual prototyping that appear in the 2000's. A case study is addressed were a requirement elicitation and analysis is made in the domain of medical (ophthalmologic) surgery. To approximate both domains (Medical and Engineering) it is used a practical reduction of the virtual prototyping techniques that makes the process applicable still keeping its soundness. All data used in this work came from an elicitation done at Santa Luzia Hospital, in Salvador, Bahia, and from the Instituto da Visão, UNIFESP, São Paulo.

Scientific Electronic Library Online (Portuguese)

86

Técnica para seleção de variáveis aplicada à separação de gases/ Variables search technique applied to gas separation

Neves, Célia de Figueiredo Cordeiro; Schvartzman, Mônica Maria de Abreu Mendonça; Jordão, Elizabete
2002-05-01

Resumo em inglês This paper describes an experimental design technique, known as variables search, developed to expose the critical variables and screen out the irrelevant ones. It is easy to learn and use and clearly dissociates the main and interactions effects from each other. An example of air separation process by pressure swing adsorption was used to demonstrate how the variables search technique works. The phases of identification of the critical variables is shown, step by step,.

Scientific Electronic Library Online (Portuguese)

87

Construção de um sistema simples e compacto de recirculação d'água sob pressão para trompa d'água/ Construction of a simple and compact system to recirculate water under pressure using a water-jet aspira tor pump

Imbroisi, Dennis de Oliveira; Santana, Carmen Silvia Tavares de; Araújo, Cleônia Roberta Melo; Silva, Wilson Ceciliano da; Lopes, Cleylton Bezerra
2009-01-01

Resumo em inglês Vacuum pumps are very useful in physical, chemical and biological experiments. In this communication it is described the design of a compact and low cost water recirculating system employing a water-jet aspirator pump as the vacuum source. The system requires only a water pump, water-jet aspirator pump, commercial PVC water tubes and a drain connection.

Scientific Electronic Library Online (Portuguese)

88

"Green chemistry": os 12 princípios da química verde e sua inserção nas atividades de ensino e pesquisa/ Green chemistry: the 12 principles of green chemistry and it insertion in the teach and research activities

Lenardão, Eder João; Freitag, Rogério Antônio; Dabdoub, Miguel J.; Batista, Antônio C. Ferreira; Silveira, Claudio da Cruz
2003-01-01

Resumo em inglês Green chemistry ¾ defined as the design, development, and application of chemical processes and products to reduce or eliminate the use and generation of substances hazardous to human health and the environment. This article summarizes the 12 principles of green chemistry, describing how they have been applied to the academic, industrial and research activities around the world.

Scientific Electronic Library Online (Portuguese)

89

Otimização do banho eletrolítico da liga Fe-W-B resistente à corrosão/ Optimization of the electrolytic bath for electrodeposition of corrosion resistant Fe-W-B alloys

Santana, Renato Alexandre Costa de; Campos, Ana Regina Nascimento; Prasad, Shiva; Leite, Valderí D.
2007-04-01

Resumo em inglês A study on optimization of bath parameters for electrodeposition of Fe-W-B alloys from plating baths containing ammonia and citrate is reported. A 2³ full factorial design was successfully employed for experimental design analysis of the results. The corrosion resistance and amorphous character were evaluated. The bath conditions obtained for depositing the alloy with good corrosion resistance were: 0.01 M iron sulfate, 0.10 M sodium tungstate and 0.60 M ammonium citrate (mais) . The alloy was deposited at 12% current efficiency. The alloy obtained had Ecorr -0.841 V and Rp 1.463 x 10(4) Ohm cm². The deposit obtained under these conditions had an amorphous character and no microcracks were observed on its surface. Besides this, the bath conditions obtained for depositing the alloy with the highest deposition efficiency were: 0.09 M iron sulfate, 0.30 M sodium tungstate and 0.50 M ammonium citrate. The alloy was deposited at 50% current efficiency, with an average composition of 34 wt% W, 66 wt% Fe and traces of boron. The alloy obtained had Ecorr -0.800 V and Rp 1.895 x 10³ Ohm cm². Electrochemical corrosion tests verified that the Fe-W-B alloy deposited under both conditions had better corrosion resistance than Fe-Mo-B.

Scientific Electronic Library Online (Portuguese)

90

Características agronômicas de arroz de terras altas sob plantio direto e adubação nitrogenada e potássica/ Effects of nitrogen and potassium fertilization on agronomic characteristics of upland rice cultivated under no-tillage

Farinelli, R.; Penariol, F. G.; Fornasieri Filho, D.; Bordin, L.
2004-06-01

Resumo em português O objetivo do presente trabalho foi avaliar o efeito da adubação nitrogenada e potássica em cobertura na cultura de arroz de terras altas, utilizando um delineamento estatístico inteiramente casualizado, com 15 tratamentos, em esquema fatorial 5 x 3, representados por cinco doses de nitrogênio (0, 25, 50, 75, 100 kg ha-1) e três doses de potássio (0, 25, 50 kg ha-1), com três repetições. Os resultados mostraram que diversas características produtivas foram infl (mais) uenciadas positivamente pela adubação nitroggenada e potássica. A melhor combinação de doses estaria em torno de 65 kg ha-1 de N e 20 kg ha-1 de K2O, resultando em maiores valores de produtividade e proteína bruta por hectare. Resumo em inglês A field trial was carried out to evaluate the effects of nitrogen and potassium top dressing on upland rice. The treatments consisted of a 5 x 3 factorial design (five nitrogen doses - 0, 25, 50, 75, and 100 kg ha- and three potassium doses - 0, 25 and 50 kg ha-1), arranged in a complete randomized design, with three replicates. The results showed that several yield characteristics were positively influenced by nitrogen and potassium fertilization. The best combination of both fertilizers for obtaining the highest protein and grain production is around 65 kg ha-1 of N and 20 kg ha-1 of K2O.

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91

Estratégias utilizadas no combate a resistência bacteriana/ Recent achievements to combat bacterial resistance

Silveira, Gustavo Pozza; Nome, Faruk; Gesser, José Carlos; Sá, Marcus Mandolesi; Terenzi, Hernán
2006-07-01

Resumo em inglês This article provides an overview on the recent achievements to combat Gram-positive bacteria and the mechanisms related to antimicrobial activity and bacterial resistance. Selected synthetic methodologies to access structurally diverse bioactive compounds are presented in order to emphasize the most important substances currently developed to overcome multiresistant strains. The main properties of vancomycin and related glycopeptide antibiotics are also discussed as a background to understanding the design of new chemotherapeutic agents.

Scientific Electronic Library Online (Portuguese)

92

25 anos de quimiometria no Brasil/ 25 years of chemometrics in Brazil

Barros Neto, Benício de; Scarminio, Ieda S.; Bruns, Roy E.
2006-12-01

Resumo em inglês Chemometric activities in Brazil are described according to three phases: before the existence of microcomputers in the 1970s, through the initial stages of microcomputer use in the 1980s and during the years of extensive microcomputer applications of the ´90s and into this century. Pioneering activities in both the university and industry are emphasized. Active research areas in chemometrics are cited including experimental design, pattern recognition and classification (mais) , curve resolution for complex systems and multivariate calibration. New trends in chemometrics, especially higher order methods for treating data, are emphasized.

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93

Montagem de um sistema para medidas galvanostáticas simultâneas em mais de uma célula/ The constrution of a multi-cell galvanostatic equipament for accelerated stability electrode test

Solymossy, Victor; Pereira, Ernesto Chaves; Terezo, Ailton José
2007-10-01

Resumo em inglês The present work deals with the design and construction of an equipment for muti-cell accelerated stability test measurements (AST) of dimensionally stable anodes (DSA). The equipment was built using only components that were available in the laboratory. Measurements of three electrochemical cells can be performed using the developed software. The acquisition time interval and the cut-off potencial can be set by the user. Experimental data for RuO2 electrodes obtained with the built equipment are in agreement with the literature.

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94

Planejamento de fármacos, biotecnologia e química medicinal: aplicações em doenças infecciosas

Guido, Rafael V. C.; Andricopulo, Adriano D.; Oliva, Glaucius
2010-01-01

Resumo em português Estratégias modernas de planejamento de fármacos se fundamentam no conhecimento da fisiopatologia das doenças, no estudo de vias bioquímicas e na seleção de alvos moleculares. As ferramentas biotecnológicas modernas têm fornecido informações valiosas para a descoberta e o desenvolvimento de novos fármacos. A química medicinal possui papel central em vários processos que visam à identificação de substâncias bioativas e ao desenvolvimento de compostos-líde (mais) res com propriedades farmacodinâmicas e farmacocinéticas otimizadas. O presente artigo apresenta uma abordagem de alguns aspectos fundamentais da biotecnologia e da química medicinal como ferramentas úteis para o planejamento de candidatos a novos fármacos para a terapia de doenças infecciosas. Resumo em inglês Current drug design strategies are based on the understanding of the physiopathology of diseases, biochemical pathways and selection of molecular targets. Modern biotechnological tools have provided valuable information to facilitate the discovery of new drug candidates. Medicinal chemistry has a vital role in a variety of processes aimed at the identification of bioactive substances and the development of lead-compounds with optimized pharmacodynamic and pharmacokinetic (mais) properties. The present paper presents some fundamental aspects of biotechnology and medicinal chemistry as useful tools in the design of new chemical entities for the therapy of infectious diseases.

Scientific Electronic Library Online (Portuguese)

95

Poluição química relacionada ao ar de interiores no Brasil/ Chemical pollution related to the indoor air in Brazil

Gioda, Adriana; Aquino Neto, Francisco Radler de
2003-05-01

Resumo em inglês During the last two decades there has been increasing concern within the scientific community related to the effects of indoor air quality on health. Changes in building design devised to improve energy efficiency and new synthetic building materials have contributed to increase pollutant concentrations. These factors have generated poor air quality and caused the development of a lot of symptoms known as Sick Building Syndrome (SBS). In Brazil, there are few studies in t (mais) his area, collected in this review to support researches and awareness of the need to adopt preventive measures to reach a better quality for the Indoor Environment.

Scientific Electronic Library Online (Portuguese)

96

Fracionamento de metais pesados em solo contaminado antes e após cultivo de arroz/ Fractionation of heavy metals in polluted soil before and after rice cultivation

Silva, Maria Ligia de Souza; Vitti, Godofredo Cesar
2008-01-01

Resumo em inglês The objective of the present work was to evaluate the distribution of Cd, Cu, Mn, Pb and Zn among the different fractions of contaminated soil, before and after rice cultivation. Seven soil samples with different degrees of contamination were studied using a randomized experimental design, with four replicates. Using an ICP-OES we analyzed the contents of heavy metals in fractions of soil, the organic matter therein, the oxides and the residual content before and after ri (mais) ce cultivation. The largest concentrations of Cd, Cu, Mn and Zn in the soil are found in the fractions with stable chemical bonds.

Scientific Electronic Library Online (Portuguese)

97

A evolução da balança analítica/ The evolution of the analytical balance

Afonso, Júlio Carlos; Silva, Raquel Medeiros da
2004-12-01

Resumo em inglês This work intends to describe the historical evolution of the balance based on its technical improvement. This instrument has always been used for commercial and industrial purposes, but its value in research and chemistry was only recognized much later. The classical balance was the two-pan model for about 40 centuries, but when its importance in chemistry was established, particularly beginning at the end of the XVIIIth century, many improvements were made in order to i (mais) ncrease sensitivity and shorten the weighing procedure. The balance design greatly changed along the XXth century: the classical two-pan models were replaced by one-pan balances that were replaced by electronic instruments.

Scientific Electronic Library Online (Portuguese)

98

Confiabilidade do Teste WPPSI-R na avaliação do desenvolvimento cognitivo de pré-escolares/ Reliability of the WPPSI-R test in the evaluation of cognitive development in preschoolers

Méio, Maria Dalva Barbosa Baker; Lopes, Claudia S.; Sichieri, Rosely; Morsch, Denise Streit
2001-02-01

Resumo em português O Teste psicométrico WPPSI-R (Wechsler Preschool and Primary Scale of Intelligence - Revised) foi o instrumento de avaliação em uma pesquisa para estudar o desenvolvimento cognitivo, na idade pré-escolar, de uma população de crianças do Instituto Fernandes Figueira (IFF) nascidas prematuras e de muito baixo peso (MBP), aplicado por quatro psicólogas previamente treinadas. O objetivo deste estudo foi avaliar a confiabilidade inter-observador na aplicação do teste (mais) . Utilizaram-se dois desenhos: de blocos incompletos equilibrados, para avaliar a concordância na aplicação do teste, e cruzado, para avaliar a concordância na pontuação dos itens. Foram estudadas 12 crianças pré-escolares nascidas no IFF (Peso ao nascer Resumo em inglês The WPPSI-R scale (Wechsler Preschool and Primary Scale of Intelligence - Revised) is a psychometric test chosen as the evaluation tool in a study on preschool-age cognitive development in a cohort of very low birth weight (VLBW) premature children from the Fernandes Figueira Institute (IFF), applied by four previously trained psychologists. The objective of this study was to verify inter-observer reliability in the test application. Two types of reliability study design (mais) were used: balanced incomplete blocks, to verify agreement in the application of the scale, and crossed design, to verify agreement in scoring of items. We studied 12 preschool children born at IFF (birthweight

Scientific Electronic Library Online (Portuguese)

99

Confiabilidade do Teste WPPSI-R na avaliação do desenvolvimento cognitivo de pré-escolares/ Reliability of the WPPSI-R test in the evaluation of cognitive development in preschoolers

Méio, Maria Dalva Barbosa Baker; Lopes, Claudia S.; Sichieri, Rosely; Morsch, Denise Streit
2001-02-01

Resumo em português O Teste psicométrico WPPSI-R (Wechsler Preschool and Primary Scale of Intelligence - Revised) foi o instrumento de avaliação em uma pesquisa para estudar o desenvolvimento cognitivo, na idade pré-escolar, de uma população de crianças do Instituto Fernandes Figueira (IFF) nascidas prematuras e de muito baixo peso (MBP), aplicado por quatro psicólogas previamente treinadas. O objetivo deste estudo foi avaliar a confiabilidade inter-observador na aplicação do teste (mais) . Utilizaram-se dois desenhos: de blocos incompletos equilibrados, para avaliar a concordância na aplicação do teste, e cruzado, para avaliar a concordância na pontuação dos itens. Foram estudadas 12 crianças pré-escolares nascidas no IFF (Peso ao nascer Resumo em inglês The WPPSI-R scale (Wechsler Preschool and Primary Scale of Intelligence - Revised) is a psychometric test chosen as the evaluation tool in a study on preschool-age cognitive development in a cohort of very low birth weight (VLBW) premature children from the Fernandes Figueira Institute (IFF), applied by four previously trained psychologists. The objective of this study was to verify inter-observer reliability in the test application. Two types of reliability study design (mais) were used: balanced incomplete blocks, to verify agreement in the application of the scale, and crossed design, to verify agreement in scoring of items. We studied 12 preschool children born at IFF (birthweight

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100

Esquizofrenia: quarenta anos da hipótese dopaminérgica sob a ótica da Química Medicinal/ Schizophrenia: forty years of the dopaminergic hypothesis from the medicinal chemistry point of view

Menegatti, Ricardo; Fraga, Carlos Alberto Manssour; Barreiro, Eliezer J.; Lima, Vera Lucia Eifler; Rates, Stela Maris Kuze; Dalla Costa, Teresa
2004-06-01

Resumo em inglês Schizophrenia is a devastating psychiatric illness that affects 1-2% of the world population and continues as a challenge to neuroscience. In this work, we describe an account about the historical evolution of the dopaminergic hypothesis of schizophrenia discussing, from the medicinal chemistry point of view all different classes of antipsychotic drugs, emphasizing the rational design, structure activity relationships (SAR) and physico-chemical properties related with its molecular mechanism of action.

Scientific Electronic Library Online (Portuguese)

101

Química de sistemas supramoleculares constituídos por porfirinas e complexos metálicos/ Chemistry of supramolecular systems containing porphyrins and metal complexes

Araki, Koiti; Toma, Henrique Eisi
2002-11-01

Resumo em inglês Supramolecular chemistry is expected to keep a high developing pace in the next years, giving support to the advancement of molecular devices and nanotechnology. In this sense, porphyrins and their analogues should play a significant role as a consequence of their catalytic, electrocatalytic, photochemical and photoelectrochemical properties. In this review we focused on our own strategy based on coordination chemistry for the design and build-up of supermolecules and sup (mais) ramolecular structures constituted by polynuclear porphyrins and metalloporphyrins. Included are also their properties and potential applications.

Scientific Electronic Library Online (Portuguese)

102

Novas estratégias terapêuticas para o tratamento da depressão: uma visão da química medicinal/ New therapeutical approachs for the treatment of depression: a medicinal chemistry view

Romeiro, Luiz Antonio Soares; Fraga, Carlos Alberto Manssour; Barreiro, Eliezer J.
2003-05-01

Resumo em inglês Depression is a widespread humor disturbance promoted mainly by depletion of biogenic neurotransmitter amines involved in the CNS synapses. Effective drug treatments for depression have been available for more than forty years. Despite its remarkable structural diversity, this paper discuss under the medicinal chemistry point of view, all different classes of "monoamine based" antidepressant drugs, emphasizing the rational design, structure-activity relationships (SAR), b (mais) iotransformation and physico-chemical properties related with antidepressant activity and molecular mechanism of action.

Scientific Electronic Library Online (Portuguese)

103

Análise estatística e optimização de perfis de redução termoprogramada (TPR)/ Statistical analysis and optimization of temperature programmed reduction (TPR) analysis

Nele, Marcio; Moreno, Esteban Lopez; Andrade, Heloysa Martins Carvalho
2006-07-01

Resumo em inglês The effect of operational variables and their interaction in TPR profiles was studied using a fractional factorial experimental design. The heating rate and the reducing agent concentration were found to be the most important variables determining the resolution and sensitivity of the technique. They showed opposite effects. Therefore, they should be manipulated preferentially in order to obtain optimized TPR profiles. The effect of sample particle size was also investiga (mais) ted. The tests were carried out within a Cu/Zn/Al2O3 catalyst used for the water-gas shift reaction that presented two distinct species of Cu2+ in TPR profiles.

Scientific Electronic Library Online (Portuguese)

104

Biodegradação de fenol por uma nova linhagem de A spergillus sp. isolada de um solo contaminado do sul do Brasil/ Biodegradation of phenol by a newly Aspergillus sp. strain isolated from a contaminated soil in southern Brazil

Passos, Cátia Tavares dos; Burkert, Janaína Fernandes de Medeiros; Kalil, Susana Juliano; Burkert, Carlos André Veiga
2009-01-01

Resumo em inglês The main goal of this work was to study the biodegradation of phenol in batch mode by a filamentous fungus isolated from a contaminated site in Southern Brazil. A better performance was obtained by previous adaptation of the microorganism to the toxic chemical. A 2³ experimental design was proposed and it could be observed total phenol degradation in 72 h using 500 mg L-1 glucose, inoculum of 20% and agitation of 200 rpm, resulting a biodegradation rate of 3.76 mg L-1 h-1. In relation to phenol tolerance, Aspergillus sp. LEBM2 was able to consume up to 989 ± 15 mg L-1.

Scientific Electronic Library Online (Portuguese)

105

Otimização e validação da técnica de extração líquido-líquido com partição em baixa temperatura (ELL-PBT) para piretróides em água e análise por CG/ Optimization and validation af liquid-liquid extraction with the low temperature partition technique (LLE-LTP) for pyrethroids in water and GC analysis

Vieira, Heulla Pereira; Neves, Antônio Augusto; Queiroz, Maria Eliana Lopes Ribeiro de
2007-06-01

Resumo em inglês The liquid-liquid extraction with the low temperature partition technique was developed for the analysis of four pyrethroids in water by CG. Using a factorial design the extraction technique was optimised evaluating the effect of the variables ionic strength, contact time and proportion between sample and solvent volumes. The validation parameters sensitivity, precision, accuracy and detection and quantification limits were evaluated. The LOD and LOQ of the method varied from 1.1 to 3.2 µg L-1 and 2.7 to 9.5 µg L-1, respectively.

Scientific Electronic Library Online (Portuguese)

106

Interferência do acido ascórbico na determinação de açúcares redutores pelo método de Lane e Eynon/ Ascorbic acid interference in the determination of reducing and total sugars by Lane and Eynon method

Tavares, José Torquato de Queiroz; Cardoso, Ricardo Luis; Costa, João Albany; Fadigas, Francisco de Souza; Fonseca, Antônio Augusto
2010-01-01

Resumo em inglês Two studies, both set up as completely randomized design, in a 5x5 and 7x5 factorial schemes, evaluated the interference of 5 and 7 ascorbic acid concentrations and 5 glucose or 5 sucrose concentrations, respectively, on the determination of total and reducing sugars by Lane and Eynon method. The ascorbic acid reducing power (AARP) over the Fehling liquor interfered in the results of total and reducing sugars. On average the AARP was equivalent to 74.83 and 69.71% of the (mais) reducing power of glucose and of hydrolyzed sucrose, respectively. The ascorbic acid was stable in all study conditions.

Scientific Electronic Library Online (Portuguese)

107

Aplicação catalítica de peneiras moleculares básicas micro e mesoporosas/ Catalytic applications of basic micro and mesoporous molecular sieves

Martins, Leandro; Cardoso, Dilson
2006-04-01

Resumo em inglês Catalysis by solid acids has received much attention due to its importance in petroleum refining and petrochemical processes. Relatively few studies have focused on catalysis by bases and even les on using basic molecular sieves. This paper deals with the potential application of micro and mesoporous molecular sieves in base catalysis reactions. The paper is divided in two parts, the first one dedicated to the design of the catalysts and the second to some relevant exampl (mais) es of catalytic reactions, which find a huge field of applications essentially in the synthesis of fine chemicals. Here, recent developments in catalysis by basic molecular sieves and the perspectives of applications in correlated catalytic processes are described.

Scientific Electronic Library Online (Portuguese)

108

Extração no ponto nuvem de compostos orgânicos homólogos e isômeros/ Extraction of homologous and isomeric organic compounds by two-phase aqueous extraction

Duarte, Lindemberg J. N.; Canselier, Jean Paul
2005-06-01

Resumo em inglês In this work, the feasibility of employing micelle-mediated extraction for selective separation of homologous or isomeric organic compounds is demonstrated. Firstly, the main parameters controlling extraction performances, such as surfactant concentration and temperature were varied. A Scheffé-type experimental design was demonstrated as a novel and useful method to characterize the various experimental factors. At each point selected in the two-phase domain and for a gi (mais) ven solute, extraction percentage (E%), concentration ratio, phase volume ratio, and equilibrium partition coefficient (K C) were determined. The values of E% and K C decrease in the following order: phenol > 1-phenylethanol ~ 2-phenylethanol > benzyl alcohol.

Scientific Electronic Library Online (Portuguese)

109

Estudo do equilíbrio e cinética da biossorção do pb2+ por saccharomyces cerevisiae/ Equilibrium and kinetic study of pb2+ biosorption by saccharomyces cerevisiae

Ferreira, Joelma Morais; Silva, Flávio Luiz Honorato da; Alsina, Odelsia Leonor Sanchez; Oliveira, Líbia de Sousa Conrado; Cavalcanti, Eliane Bezerra; Gomes, Wolia Costa
2007-10-01

Resumo em inglês The biosorption, based on the use of biomass for removal of ions is distinguished as an innovative and promising technology when compared with the traditional methods. In this context, the aim of the present work is to use Saccharomyces cerevisiae as biosorbent for the retention of Pb2+ metal ions. Factorial design was used for evaluation of the process. The observed equilibrium data were well described by Langmuir and Freundlich adsorption isotherms. The maximum adsorpti (mais) on capacity was 1486.88 mg/g. The results indicated that Saccharomyces cerevisiae is suitable for biosorption of Pb2+ metal ions.

Scientific Electronic Library Online (Portuguese)

110

Avaliação da reação foto-fenton na decomposição de resíduos de carrapaticida/ Evaluation of the photo-fenton reaction in the decomposition of tick residues

Gromboni, Caio Fernando; Ferreira, Antônio Gilberto; Kamogawa, Marcos Yassuo; Nogueira, Ana Rita de Araujo
2007-04-01

Resumo em inglês Experimental procedures based on factorial design and surface response methodology were applied to establishe experimental conditions for the decomposition of a 1:400 (v/v) Supocade® (chlorfenvinphos 13.8% and cypermethrin 2.6%) solution, used to control cattle ticks. Experiments exploring photo-oxidative reactions were performed with and without UV radiation, fixing exposition time and pesticide volume, and varying the oxidant mixture. The use of 3.6 mmol L-1 Fe2+ plus (mais) 1.9 mol L-1 H2O2 plus UV radiation provided destruction of 94% of the original carbon content and reduction of aromatic, aliphatic and carbinolic compounds, evaluated by determination of residual carbon content by ICP OES and NMR analysis.

Scientific Electronic Library Online (Portuguese)

111

Análise de resíduos de agrotóxicos em tomates empregando dispersão da matriz em fase sólida (DMFS) e cromatografia gasosa/ Analysis of pesticide residue in tomato using matrix solid-phase dispersion (MSPD) and gas chromatography

Pinho, Gevany P.; Neves, Antônio A.; Queiroz, Maria Eliana L. R.
2009-01-01

Resumo em inglês This work was aimed on optimization of the matrix solid-phase dispersion (MSPD) technique using gas chromatography for analyzing residues of chlorpyriphos, λ-cyhalothrin, cypermethrin and deltamethrin in tomatoes. The results showed that silica was more efficient for the clean up of extracts, but florisil provided the highest recovery rates. A 2³ complete factorial design was carried out to evaluate the absorbent/sample ratio, presence of co-column (silica) and ultr (mais) asonic bath on the extraction rate. The percentage of extraction of the pesticides chlorpyriphos, λ-cyhalothrin, cypermethrin and deltamethrin were 64.7, 88.3, 99.2 and 89.2%, respectively, with relative standard deviations below 5%.

Scientific Electronic Library Online (Portuguese)

112

Influência das variáveis nitrogênio, fósforo e ºBrix na produção dos metabólicos secundários contaminantes totais da fermentação alcoólica/ Influence of nitrogen, phosphorus and ºBrix on the production of total secondary contaminant metabolites (MSCT) of alcoholic fermentation

Silva, José Alexsandro; Silva, Flávio Luiz Honorato da; Alves, Rômulo Romeu da Nóbrega; Santana, Davi Pereira de
2006-07-01

Resumo em inglês The present study evaluated the influence of nitrogen, phosphorus and ºBrix on the production of MSCT through a factorial design methodology and analysis of response surface. The objective was to propose a statistically significant probabilistic model for the alcoholic fermentation. In order to obtain less MSCT, the medium under fermentation needs to present low sugar concentration. It was observed that phosphorus and nitrogen, even with no significant individual effects (mais) , presented interactions with each other decreasing the production of MSCT, which improves alcohol quality.

Scientific Electronic Library Online (Portuguese)

113

Aplicação de fósforo para imobilização química do cádmio em solo contaminado/ Phosphorus application for the chemical immobilization of cadmium in contaminated soil

Trevizam, Anderson Ricardo; Villanueva, Felipe Carlos Alvarez; Muraoka, Takashi; Nascimento Filho, Virgilio Franco do; Abreu Junior, Cassio Hamilton
2010-01-01

Resumo em inglês The objective of the study was to evaluate the effect of phosphorus on the Cd availability to plants of a contaminated soil using 109Cd isotope and chemical extractants. The experiment was set in a randomized block design and the soil was labeled with 222 KBq of 109Cd per pot and received 5 rates of P as triple superphosphate, growing lettuce plants as test crop. The use of phosphorus reduced pH of soil which altered the Cd availability in DTPA and Mehlich extractants. Th (mais) e lettuce Cd content decreased but its accumulation and L value increased in all treatments compared to the control, demonstrating the inefficiency of phosphorus in reducing the Cd availability.

Scientific Electronic Library Online (Portuguese)

114

Desempenho de biomassas na adsorção de hidrocarbonetos leves em efluentes aquosos/ Performance of biomasses in the adsorption of simple hydrocarbons in aqueous effluents

Santos, Elba Gomes dos; Alsina, Odelsia Leonor Sanchez de; Silva, Flávio Luiz Honorato da
2007-04-01

Resumo em inglês Removal of hydrocarbons from aqueous effluents using biosorbents was investigated. The effluent was simulated by a dispersion of gasoline (simple hydrocarbons) in water. Corn-cob, wood powder, coconut mesocarp and sugar-cane bagasse were used as adsorbents and their performance verified by means of batch experiments performed in an agitated vessel. The influence of input variables such as hydrocarbon concentration, mass of biomass and agitation level on the adsorbents' ca (mais) pacity was studied by means of factorial design. The results indicated that, among the materials studied, coconut mesocarp and sugar-cane bagasse can be considered promising biomasses for treating aqueous effluents contaminated by hydrocarbons.

Scientific Electronic Library Online (Portuguese)

115

Efeito da aplicação de nitrato na redução biogênica de sulfeto sob diferentes concentrações iniciais de bactérias redutoras de nitrato e sulfato/ Effect of nitrate application on reduction of biogenic sulphide under different initial concentrations of nitrate and sulphate-reducing bacteria

Sousa, Kally Alves de; Cammarota, Magali Christe; Sérvulo, Eliana Flávia Camporese
2010-01-01

Resumo em inglês The effect of sodium nitrate application in the reduction of biogenic sulphide was evaluated through a 2k complete factorial design, using as variable response the production of sulfide at intervals of incubation of 7, 14 and 28 days. The most effective condition for reducing the sulphide production (final concentrations from 0.4 to 1.6 mg S2- L-1) was obtained with an initial population of sulphate-reducing bacteria and nitrate-reducing bacteria of 10(4) MPN mL-1 and 427 (mais) .5 mg L-1 nitrate. The results also suggested that the applications of nitrate to control the process of souring should follow a continuous scheme.

Scientific Electronic Library Online (Portuguese)

116

Ecomateriais: desenvolvimento e aplicação de materiais porosos funcionais para proteção ambiental/ Ecomaterials: development and application of functional porous materials for environmental protection

Ferreira, Odair Pastor; Alves, Oswaldo Luiz; Macedo, Jeremias de Souza; Gimenez, Iara de Fátima; Barreto, Ledjane Silva
2007-04-01

Resumo em inglês Fundamental aspects of the conception and applications of ecomaterials, in particular porous materials in the perspective of green chemistry are discussed in this paper. General recommendations for description and classification of porous materials are reviewed briefly. By way of illustration, some case studies of materials design and applications in pollution detection and remediation are described. It is shown here how different materials developed by our groups, such a (mais) s porous glasses, ecomaterials from biomass and anionic clays were programmed to perform specific functions. A discussion of the present and future of ecomaterials in green chemistry is presented along with important key goals.

Scientific Electronic Library Online (Portuguese)

117

Degradação ruminal e estimativa de consumo de genótipos de capim-elefante anão/ Ruminal degradation and intake prediction of the dwarf elephant grass genotypes

Araújo, Saulo Alberto do Carmo; Vásquez, Hernán Maldonado; Silva, José Fernando Coelho da; Deminicis, Bruno Borges; Campos, Patrícia Regina de Souza Siqueira; Lista, Fábio Nunes
2010-01-01

Resumo em português Os objetivos neste estudo foram avaliar a degradação ruminal in situ da matéria seca (MS) e da fibra em detergente neutro (FDN) e estimar o consumo de matéria seca de genótipos de capim-elefante anão em diferentes intervalos de corte. Os tempos de incubação no ambiente ruminal foram 0, 3, 6, 12, 24, 36, 48, 72, 96 e 144 horas. O delineamento experimental utilizado foi o de blocos casualizados com três repetições (animais), dois genótipos de capim-elefante anã (mais) o (CNPGL 94-34-3, CNPGL 92-198-7) e a cultivar Mott, avaliados em intervalos de corte de 14, 28, 42, 56, 70 e 84 dias, em esquema em parcelas subdivididas. Os parâmetros de degradação da MS e FDN e suas degradabilidades potencial e efetiva não apresentaram grande variação entre a cultivar Mott e os genótipos CNPGL 94-34-3 e CNPGL 92-198-7, mas reduziram substancialmente com o aumento da maturidade da planta em todos os genótipos. As estimativas de consumo geradas por duas equações são adequadas a esses alimentos. Resumo em inglês The objectives of this study were to assess the in situ rumen degradation of dry matter (DM) and neutral detergent fiber (NDF) and the estimated DM intake of dwarf elephant grass genotypes in different cutting intervals. The incubation periods in the rumen environment were 0, 3, 6, 12, 24, 36, 48, 72, 96 and 144 hours. A randomized block design was used with three replications (animals), two dwarf elephant grass genotypes (CNPGL 94-34-3 and CNPGL 92-198-7) and the cv. Mot (mais) t, with cutting intervals of 14, 28, 42, 56, 70 and 84 days, in a split plot design. The parameters of DM and NDF degradation, and its potential and effective degradabilities did not vary greatly for cv. Mott and the CNPGL 94-34-3 and CNPGL 92-198-7 genotypes, but they decreased substantially with increased plant maturity for all the genotypes. Intake estimates generated by two equations are considered valid for these feeds.

Scientific Electronic Library Online (Portuguese)

118

Montagem e caracterização elétrica de pilhas a combustível de óxido sólido (PaCOS)/ Assembly and electrical characterization of solid oxide fuel cell stacks

Tarôco, Hosane Aparecida; Andrade, Samuel Tadeu de Paula; Brant, Márcia Caldeira; Domingues, Rosana Zacarias; Matencio, Tulio
2009-01-01

Resumo em inglês This paper is focused on a review of the design features and the electrochemistry characterization of anode-supported planar SOFC. Studies and results of metallic alloy interconnectors and recovery for protection against corrosion and for contact layer are showed. Moreover a discussion of examples of measurements of impedance spectrometry, according to the literature and our experimental results are made. For the anode supported fuel cells the power density varies from 0. (mais) 1 to 0.5 Wcm², according to results in the literature (showed in this paper). For electrolyte supported fuel cell the power density can be 10 Wcm-2 for high temperatures. An English-Portuguese glossary of most used terms in SOFC stack is given for greater clarity and to introduce new terms to the reader.

Scientific Electronic Library Online (Portuguese)

119

Lipídios estruturados obtidos a partir da mistura de gordura de frango, sua estearina e triacilgliceróis de cadeia média: II- pontos de amolecimento e fusão/ Structured lipids from chicken fat, its stearin, and medium chain triacyglycerol blends: II- softening and melting points

Chiu, Ming Chih; Gioielli, Luiz Antonio; Grimaldi, Renato
2008-01-01

Resumo em inglês The aim of the present work is to investigate the effects of blending and chemical interesterification reactions on the softening and melting behavior of chicken fat, its stearin and medium chain triacylglycerols, and blends thereof in various ratios. Chemical interesterification is a promising alternative to the current processes of modifying the physical properties of fats. In the experimental design 7 samples corresponding to 7 different blend proportions were used. Th (mais) e results were represented in triangular diagrams. The addition of stearin influenced the softening and melting points. The mixture response surface methodology proved to be an extremely useful tool for the optimization of the fat mixtures.

Scientific Electronic Library Online (Portuguese)

120

Espectrofotometria de longo caminho óptico em espectrofotômetro de duplo-feixe convencional: uma alternativa simples para investigações de amostras com densidade óptica muito baixa/ Long optical path length spectrophotometry in conventional double-beam spectrophotometers: a simple alternative for investigating samples of very low optical density

Galo, André Luiz; Colombo, Márcio Francisco
2009-01-01

Resumo em inglês We describe the design and tests of a set-up mounted in a conventional double beam spectrophotometer, which allows the determination of optical density of samples confined in a long liquid core waveguide (LCW) capillary. Very long optical path length can be achieved with capillary cell, allowing measurements of samples with very low optical densities. The device uses a custom optical concentrator optically coupled to LCW (TEFLON® AF). Optical density measurements, carrie (mais) d out using a LCW of ~ 45 cm, were in accordance with the Beer-Lambert Law. Thus, it was possible to analyze quantitatively samples at concentrations 45 fold lower than that regularly used in spectrophotometric measurements.

Scientific Electronic Library Online (Portuguese)

121

Desenvolvimento e avaliação de um porta-amostra de baixo custo para caracterização elétrica de materiais cerâmicos/ Development and evaluation of a low cost sample holder for electical characterization of ceramics

Lima, Luiz Rogério Pinho de Andrade; Nóbrega, Shayenne Diniz da; Vasconcelos, Carmel Suzarte Ayres; Pepe, Iuri Muniz; Soares Júnior, Luiz Carlos Simões
2010-01-01

Resumo em inglês Conventional sample holder cells used to the electric characterization of ceramics at high temperature consists of an alumina tube and platinum wires and plates using a complex design. The high cost materials used in the conventional sampler holder cell were replaced by stainless steel and conventional ceramics. The sample holder was validated by characterizing yttria-stabilized-zirconia in a temperature range of 25 to 700 ºC. The results do not present variations, disco (mais) ntinuity or unusual noise in the electric signals. Several samples were characterized without maintenance, which demonstrates that the sample holder is electric and mechanic adequate to be used to electrical characterization of ceramics up to 700 ºC.

Scientific Electronic Library Online (Portuguese)

122

Efeitos de geada no desenvolvimento do feijoeiro em sucessão a espécies vegetais e adubação nitrogenada/ Frust effect in the development of common bean, in succession cover crops and nitrogen fertilization

Farinelli, Rogério; Fornasieri Filho, Domingos; Bordin, Luciano; Penariol, Fernando Guido; Volpe, Clóvis Alberto
2010-01-01

Resumo em português O objetivo deste trabalho foi verificar o efeito de geada no desenvolvimento do feijoeiro em experimentação de cultivo em sucessão a espécies de cobertura e adubação nitrogenada, em delineamento experimental de blocos ao acaso em esquema de parcelas subdivididas, com quatro repetições. As parcelas foram constituídas pelas espécies Sorghum bicolor tipo guinea, Canavalia brasiliensis, Sorghum bicolor, Crotalaria juncea, Pennisetum glaucum e uma testemunha mantida (mais) no "limpo", enquanto as subparcelas por doses de nitrogênio em cobertura (0, 25, 50 e 75 kg ha-1 de N), utilizando-se como fonte a uréia. Menores danos e severidade da geada foram constatados em plantas de feijão cultivadas após as espécies Canavalia brasiliensis e Crotalaria juncea, devido à menor quantidade de massa seca residual em relação à das culturas de gramíneas. Produtividades superiores de grãos de feijoeiro após geada foram obtidas na sucessão com Crotalária juncea e C. brasiliensis e com a aplicação de doses entre 44,5 e 52,0 kg ha-1 de N, em cobertura. Resumo em inglês The objective this work was verify the effect of frost in development of common bean in experimentation succession cover crops and nitrogen fertilization. The experimental design used was the randomized blocks in split-plot design, with four replications. The plots were represented by species Sorghum bicolor guinea type, Canavalia brasiliensis, Sorghum bicolor, Crotalaria juncea, Pennisetum glaucum and witness maintained "clean"; the sub parcels by doses of nitrogen appli (mais) ed in topdressing (0, 25, 50, and 75 kg ha-1 of N), being used urea as source of N. Less damages and severity of the frost were observed in bean plants grown after the species Canavalia brasiliensis and Crotalaria juncea, due to the least amount of residual dry mass in relation to the grasses crop. Higher yields of common bean after the frost were obtained with Crotalaria juncea and Canavalia brasiliensis and with application of doses between 44.5 and 52.0 kg ha-1 of N in topdressing

Scientific Electronic Library Online (Portuguese)

123

Produção biotecnológica de poli-hidroxialcanoatos para a geração de polímeros biodegradáveis no Brasil/ Biotechnological production of polyhydroxyalkanoates in brazil for biodegradable polymers

Silva, Luiziana Ferreira da; Gomez, José Gregório Cabrera; Rocha, Rafael Costa Santos; Taciro, Marilda Keico; Pradella, José Geraldo da Cruz
2007-01-01

Resumo em inglês In recent years, several studies have been developed in Brazil to produce biodegradable materials. A particular family of bacterial polymers, the polyhydroxyalkanoates (PHA), has received special attention. PHAs are thermoplastic, biodegradable, biocompatible, are synthesised from renewable resources and can substitute petrochemical plastics in some applications. Different aspects have been focused to increase productivity and to reduce the cost of PHA production: bacteri (mais) al improvement, use of industrial by-products as raw material, bioreactor design, process operation strategies, downstream process, mathematical modelling, polymer characterisation, application and biodegradability of blends. A production process was transferred to industry and studies to produce new PHA by controlling monomer composition are in progress. All these aspects are presented in this review.

Scientific Electronic Library Online (Portuguese)

124

The utility of screening for perinatal depression in the second trimester among Chinese: a three-wave prospective longitudinal study

Lau, Ying; Wong, Keung Fu Daniel; Chan, Sin Kin

This paper aims to study the pattern of perinatal depressive symptomatology and determine the predictive power of second trimester perinatal depressive symptoms for future perinatal periods. A population-based sample of 2,178 women completed the Edinburgh Postnatal Depression Scale (EPDS) in the sec...

DRIVER (Portuguese)

125

Objectively Measured Time Spent Sedentary Is Associated With Insulin Resistance Independent of Overall and Central Body Fat in 9- to 10-Year-Old Portuguese Children

Sardinha, Luis B.; Andersen, Lars Bo; Anderssen, Sigmund A.; Quitério, Ana L.; Ornelas, Rui; Froberg, Karsten; Riddoch, Chris J.

I Brage finner du siste tekst-versjon av artikkelen, og den kan inneholde ubetydelige forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på www.sciencedirect.com: http://dx.doi.org/10.2337/dc07-1286 / In Brage you'll find the final text version of the article, and it may contain ...

DRIVER (Portuguese)

126

Is the discourse of hybridity a celebration of mixing, or a reformulation of racial division? a multimodal analysis of the Portuguese magazine Afro

Carvalheiro, José Ricardo

Lange Zeit war die Untersuchung von Beziehungen zwischen "Rassen" von spezifischen Paradigmen – insbesondere Assimilation vs. Multikulturalismus – dominiert, die auf Unterschiedlichkeit abhoben (als Problem bzw. als besondere Potenz). In neuerer Zeit hat die Vorstellung der "Mischung" von und des Au...

DRIVER (Portuguese)

127

Fortaleza de São Sebastião en die Kasteel de Goede Hoop : ’n historiese en vergelykende studie Fortaleza de São Sebastião and the Castle of Good Hope: a historical and comparative study

Ferreira, O.J.O. (Ockert Jacobus Olivier), 1940-; Le Roux, Schalk W.

From the beginning of the 16th century Ilha de Moçambique [Mozambique Island] represented for the Portuguese the most important port of call in the Carreira da Índia, the round voyage between Portugal and India. After the Dutch East India Company (V.O.C.) was founded in 1602, the Dutch cast longing ...

DRIVER (Portuguese)

128

Cross-Language Information Retrieval

Oard, Douglas W.; Diekema, Anne R.

This chapter reviews research and practice in cross-language information retrieval (CUR) that seeks to support the process of finding documents written in one natural language (e.g., English or Portuguese) with automated systems that can accept queries expressed in other languages. With the globaliz...

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129

Bioclimatic approach in municipal master plan the northern part of Portuguese western coast

Marques, B.A.; Brandão Alves F.; Corvacho, H.

Authors of papers in the proceedings and CD-ROM ceded copyright to the IAHS and UP. Authors furthermore declare that papers are their original work, not previously published and take responsibility for copyrighted excerpts from other works, included in their papers with due acknowledgment in the wr...

DRIVER (Portuguese)

130

Bicycle Use for Transport in an Australian and a Belgian City: Associations with Built-Environment Attributes

Owen, Neville; De Bourdeaudhuij, Ilse; Sugiyama, Takemi; Leslie, Eva; Cerin, Ester; Van Dyck, Delfien; Bauman, Adrian

The walkability attributes of neighborhood environments (residential density, land use mixture, and connectedness of streets) have been found to be associated with higher rates of walking. However, relatively less is known about the associations of walkability attributes with bicycle use for transpo...

DRIVER (Portuguese)

131

Silva, Mario J.; Cardoso, Nuno; Martins, Bruno

This paper reports the participation of the XLDB Group from the University of Lisbon in the CLEF 2006 ad-hoc monolingual and bilingual subtasks for Portuguese. We present our IR system and detail both the query expansion strategy and the weighting scheme. In the end, we describe our runs and analyse...

DRIVER (Portuguese)