The aim of this work was to investigate the influences of different fermentation factors on ethan... more The aim of this work was to investigate the influences of different fermentation factors on ethanol production rates by Saccharomyces cerevisiae (lager strain), at high-gravity brewing using response surface methodology. An empirical linear polynomial model was developed to describe the behaviour of the dependent variable as a function of significant factors. The resultant functional relationship in terms of coded values for predicting ethanol production rates was: Y=0.421+0.155X2+0.0575X2X3, where Y represents the ethanol production rate (g/lh), and X2 and X3 are coded levels for fermentation temperature and nutrient supplementation, respectively. Patterns of yeast growth, decrease in wort gravity and ethanol production were also evaluated at the maximum ethanol production rate (0.694 g/lh). It was concluded that higher ethanol production rates could be achieved by increasing fermentation temperature and supplementing high-gravity worts with yeast extract, ergosterol and Tween 80.
Schwarzer, R., «Self-efficacy in the adoption and maintenance of health behaviors: theoretical ap... more Schwarzer, R., «Self-efficacy in the adoption and maintenance of health behaviors: theoretical approaches and a new model», in R. Schwarzer (Ed.), Self-Efficacy: Thought Control of Action, Hemisphere, Washington, 1992, pp. 217-243. Formatada: hps, Cor do tipo de letra: Preto, Português (Portugal) Formatada: Padrão: Limpo (Branco)
The current study describes the experience in the implementation of a mobile HIS/PACS workstation... more The current study describes the experience in the implementation of a mobile HIS/PACS workstation to assist critical cardiac patients in an Intensive Care Unit (ICU). Recently, mobile devices connected to a WiFi network were incorporated to the Hospital information System, providing the same functionalities of common desktop counterpart. However, the use of commercially devices like PDAs and Pocket PCs presented a series of problems that are more emphasized in the ICUs 1) low autonomy of the batteries, which need constant recharges; 2) low robustness of the devices; 3) insufficient display area to show medical images and vital signals; 4) data entry remains a major problem and imposes an extra time consumption to the staff; 5) high cost when fully equipped with WiFi connection, optical reader to access bar codes and memory. To address theses problems we developed a mobile workstation (MedKart) that provides access the HIS and PACS systems, with all resources and an ergonomic and practical design to be used by physicians and nurses inside the ICU. The system fulfills the requirements to assist, in the point-of-care, critical cardiac patients in Intensive Care Units.
Page 1. New Powder Coating Equipment to Produce Continuous Fibre Thermoplastic Matrix Towpregs RF... more Page 1. New Powder Coating Equipment to Produce Continuous Fibre Thermoplastic Matrix Towpregs RF Silva1,a, JF Silva1,b, JP Nunes2,c, CA Bernardo2,d and AT Marques3,e 1Dept. of Mechanical Engineering, ISEP, Porto, Portugal ...
This work reviews the work made in last years to produce thermoplastic matrix towpregs to highly ... more This work reviews the work made in last years to produce thermoplastic matrix towpregs to highly demanding and more cost-effective commercial applications using a powder coating technology developed in Portugal by Minho and Porto Universities. Different thermoplastic matrices and continuous fibre reinforcements were used in the towpregs produced for highly demanding markets (e.g., carbon fibre reinforced Primospire® towpreg) and for more commercial applications (e.g., glass fibre reinforced polypropylene and polyvinyl chloride towpregs). The relevant processing parameters, such as, fibre pull-speed and furnace temperature were varied to determine their influence on the polymer mass fraction obtained in the studied raw materials. Several technologies were also developed and used (compression moulding, pultrusion and filament winding) to process composite parts with adequate properties for the envisaged markets at compatible production rates. The obtained results lead us to conclude that the studied thermoplastic matrix towpregs and their processed composite parts have very interesting conditions for being applied both in highly advanced and cost-effective markets.
1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto,... more 1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto, Portugal 2 Department of Polymer Engineering, Universidade do Minho 4800-058 Guimarães, Portugal 3 DEMEGI-INEGI-FEUP, Faculdade de Engenharia, Universidade ...
Page 1. Production of Thermoplastic Towpregs JC Velosa 1a , JP Nunes 1b , JF Silva 2c , CA Bernar... more Page 1. Production of Thermoplastic Towpregs JC Velosa 1a , JP Nunes 1b , JF Silva 2c , CA Bernardo 1d , AT Marques 3e 1 Polymer Engineering Department, University of Minho, Guimarães, Portugal 2 Department of Mechanical Engineering, ISEP, Porto, Portugal ...
Abstract This paper presents a study on the interlaminar fracture of filament wound composites. M... more Abstract This paper presents a study on the interlaminar fracture of filament wound composites. Mode II End Notched Flexure (ENF) tests were performed on flat glass/polyester specimens. The tested specimens had asymmetric [±θ] 4 angle-ply stacking-sequences. ...
1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto,... more 1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto, Portugal 2 Department of Polymer Engineering, Universidade do Minho 4800-058 Guimarães, Portugal 3 DEMEGI-INEGI-FEUP, Faculdade de Engenharia, Universidade ...
I. INTRODUCTION SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) [1] are excell... more I. INTRODUCTION SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) [1] are excellent candidates for future broadband wireless systems since they can have good performance in severely time-dispersive channels without requiring complex receiver ...
We have developed a new approach for estimating the location and geometry of several density anom... more We have developed a new approach for estimating the location and geometry of several density anomalies that give rise to a complex, interfering gravity field. The user interactively defines the assumed outline of the true gravity sources in terms of points and line segments, and the method estimates sources closest to the specified outline to achieve a match between the predicted and observed gravity fields. Each gravity source is assumed to be a homogeneous body with a known density contrast; different density contrasts may be assigned to each source. Tests with synthetic data show that the method can be of use in estimating (1) multiple laterally adjacent and closely situated gravity sources, (2) single gravity sources consisting of several homogeneous compartments with different density contrasts, and (3) two gravity sources with different density contrasts of the same sign, one totally enclosed by the other. The method is also applied to three different sets of field data where the gravity sources belong to the same categories established in the tests with synthetic data. The method produces solutions consistent with the known geologic attributes of the gravity sources, illustrating its potential practicality.
iii CASTRO, Eduardo Monteiro de Priorização de projetos, através da identificação e análise de cr... more iii CASTRO, Eduardo Monteiro de Priorização de projetos, através da identificação e análise de critérios de seleção, relacionados aos objetivos estratégicos de negócio FGV, Rio de Janeiro, Setembro/2010. Dissertação de Mestrado -Fundação Getulio Vargas -Rio de Janeiro 1. Priorização de Projetos 2. Análise Multicritério 3. Administração CDD: CDU: iv Dedico este trabalho à minha esposa Adriane e aos meus filhos, Gustavo e Letícia, pelo apoio e compreensão nos momentos decisivos para a confecção desse estudo. VENCEMOS! v AGRADECIMENTOS À minha esposa Adriane por todo o apoio e força para superar mais esse desafio. Aos meus filhos Gustavo e Letícia pela compreensão da minha ausência e pela oportunidade de me realizar como pai. Aos meus pais Odayr e Sandra, que são meus exemplos de família e de vida. Ao meu orientador Professor Eduardo Marques, que com muita atenção me passou ensinamentos e conhecimentos que muito me ajudaram nesse trabalho. Aos professores do MIM (Master in International Management) -Mestrado Executivo Internacionalda Fundação Getulio Vargas, que com seus conhecimentos me auxiliaram na criação de uma nova percepção do mundo dos negócios. vi iii APRESENTAÇÃO O tema dessa dissertação de mestrado foi definido em decorrência da minha experiência profissional como consultor, que me propiciou a percepção das dificuldades encontradas pelas empresas em identificar os projetos mais relevantes e prioritários a serem executados, com base nos objetivos estratégicos definidos pela alta administração. Essa dificuldade aumenta ainda mais, pois, essa priorização de projetos não é estática, ou seja, uma fotografia. Ela deve ser atualizada sempre que os objetivos estratégicos sofram qualquer alteração, ou mesmo, quando o contexto em que a companhia está inserida passe por alguma mudança. Essa mudança no contexto onde está inserida a empresa se reflete diretamente nos conceitos atribuídos aos critérios para cada um dos projetos. No primeiro capítulo temos uma breve introdução ao assunto e apresentamos como está estruturada a dissertação. Eduardo Monteiro de Castro vii iv RESUMO O problema a ser tratado por essa dissertação de mestrado é a seleção de projetos, de qualquer natureza, a serem executados por uma empresa ou uma área/departamento de uma empresa, considerando o portfólio de projetos existente e o orçamento disponível para tal. O objetivo é ordenar os projetos ou grupos de projetos de forma a identificar os projetos mais relevantes e/ou prioritários para a empresa. Essa relevância é identificada através de critérios que são avaliados por especialistas da empresa ou departamento em questão. Esses critérios são definidos pelos especialistas da empresa e oriundos tanto do plano estratégico e dos objetivos estratégicos da empresa ou departamento, quanto da experiência desses especialistas. São identificados e discutidos previamente às atividades de ordenação dos projetos. Uma vez que esses projetos ou grupos de projetos estejam ordenados, basta seguir essa seqüência para definir quais projetos são comportados pelo orçamento da empresa ou do departamento. Após essa decisão os projetos selecionados deverão ser executados de forma a produzir o resultado esperado. Palavras-chaves: Priorização de projetos, Análise multicritério, Objetivos estratégicos, Orçamento de projetos.
The aim of this work was to investigate the influences of different fermentation factors on ethan... more The aim of this work was to investigate the influences of different fermentation factors on ethanol production rates by Saccharomyces cerevisiae (lager strain), at high-gravity brewing using response surface methodology. An empirical linear polynomial model was developed to describe the behaviour of the dependent variable as a function of significant factors. The resultant functional relationship in terms of coded values for predicting ethanol production rates was: Y=0.421+0.155X2+0.0575X2X3, where Y represents the ethanol production rate (g/lh), and X2 and X3 are coded levels for fermentation temperature and nutrient supplementation, respectively. Patterns of yeast growth, decrease in wort gravity and ethanol production were also evaluated at the maximum ethanol production rate (0.694 g/lh). It was concluded that higher ethanol production rates could be achieved by increasing fermentation temperature and supplementing high-gravity worts with yeast extract, ergosterol and Tween 80.
Schwarzer, R., «Self-efficacy in the adoption and maintenance of health behaviors: theoretical ap... more Schwarzer, R., «Self-efficacy in the adoption and maintenance of health behaviors: theoretical approaches and a new model», in R. Schwarzer (Ed.), Self-Efficacy: Thought Control of Action, Hemisphere, Washington, 1992, pp. 217-243. Formatada: hps, Cor do tipo de letra: Preto, Português (Portugal) Formatada: Padrão: Limpo (Branco)
The current study describes the experience in the implementation of a mobile HIS/PACS workstation... more The current study describes the experience in the implementation of a mobile HIS/PACS workstation to assist critical cardiac patients in an Intensive Care Unit (ICU). Recently, mobile devices connected to a WiFi network were incorporated to the Hospital information System, providing the same functionalities of common desktop counterpart. However, the use of commercially devices like PDAs and Pocket PCs presented a series of problems that are more emphasized in the ICUs 1) low autonomy of the batteries, which need constant recharges; 2) low robustness of the devices; 3) insufficient display area to show medical images and vital signals; 4) data entry remains a major problem and imposes an extra time consumption to the staff; 5) high cost when fully equipped with WiFi connection, optical reader to access bar codes and memory. To address theses problems we developed a mobile workstation (MedKart) that provides access the HIS and PACS systems, with all resources and an ergonomic and practical design to be used by physicians and nurses inside the ICU. The system fulfills the requirements to assist, in the point-of-care, critical cardiac patients in Intensive Care Units.
Page 1. New Powder Coating Equipment to Produce Continuous Fibre Thermoplastic Matrix Towpregs RF... more Page 1. New Powder Coating Equipment to Produce Continuous Fibre Thermoplastic Matrix Towpregs RF Silva1,a, JF Silva1,b, JP Nunes2,c, CA Bernardo2,d and AT Marques3,e 1Dept. of Mechanical Engineering, ISEP, Porto, Portugal ...
This work reviews the work made in last years to produce thermoplastic matrix towpregs to highly ... more This work reviews the work made in last years to produce thermoplastic matrix towpregs to highly demanding and more cost-effective commercial applications using a powder coating technology developed in Portugal by Minho and Porto Universities. Different thermoplastic matrices and continuous fibre reinforcements were used in the towpregs produced for highly demanding markets (e.g., carbon fibre reinforced Primospire® towpreg) and for more commercial applications (e.g., glass fibre reinforced polypropylene and polyvinyl chloride towpregs). The relevant processing parameters, such as, fibre pull-speed and furnace temperature were varied to determine their influence on the polymer mass fraction obtained in the studied raw materials. Several technologies were also developed and used (compression moulding, pultrusion and filament winding) to process composite parts with adequate properties for the envisaged markets at compatible production rates. The obtained results lead us to conclude that the studied thermoplastic matrix towpregs and their processed composite parts have very interesting conditions for being applied both in highly advanced and cost-effective markets.
1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto,... more 1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto, Portugal 2 Department of Polymer Engineering, Universidade do Minho 4800-058 Guimarães, Portugal 3 DEMEGI-INEGI-FEUP, Faculdade de Engenharia, Universidade ...
Page 1. Production of Thermoplastic Towpregs JC Velosa 1a , JP Nunes 1b , JF Silva 2c , CA Bernar... more Page 1. Production of Thermoplastic Towpregs JC Velosa 1a , JP Nunes 1b , JF Silva 2c , CA Bernardo 1d , AT Marques 3e 1 Polymer Engineering Department, University of Minho, Guimarães, Portugal 2 Department of Mechanical Engineering, ISEP, Porto, Portugal ...
Abstract This paper presents a study on the interlaminar fracture of filament wound composites. M... more Abstract This paper presents a study on the interlaminar fracture of filament wound composites. Mode II End Notched Flexure (ENF) tests were performed on flat glass/polyester specimens. The tested specimens had asymmetric [±θ] 4 angle-ply stacking-sequences. ...
1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto,... more 1 Department of Mechanical Engineering, Instituto Superior de Engenharia do Porto 4200-072 Porto, Portugal 2 Department of Polymer Engineering, Universidade do Minho 4800-058 Guimarães, Portugal 3 DEMEGI-INEGI-FEUP, Faculdade de Engenharia, Universidade ...
I. INTRODUCTION SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) [1] are excell... more I. INTRODUCTION SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) [1] are excellent candidates for future broadband wireless systems since they can have good performance in severely time-dispersive channels without requiring complex receiver ...
We have developed a new approach for estimating the location and geometry of several density anom... more We have developed a new approach for estimating the location and geometry of several density anomalies that give rise to a complex, interfering gravity field. The user interactively defines the assumed outline of the true gravity sources in terms of points and line segments, and the method estimates sources closest to the specified outline to achieve a match between the predicted and observed gravity fields. Each gravity source is assumed to be a homogeneous body with a known density contrast; different density contrasts may be assigned to each source. Tests with synthetic data show that the method can be of use in estimating (1) multiple laterally adjacent and closely situated gravity sources, (2) single gravity sources consisting of several homogeneous compartments with different density contrasts, and (3) two gravity sources with different density contrasts of the same sign, one totally enclosed by the other. The method is also applied to three different sets of field data where the gravity sources belong to the same categories established in the tests with synthetic data. The method produces solutions consistent with the known geologic attributes of the gravity sources, illustrating its potential practicality.
iii CASTRO, Eduardo Monteiro de Priorização de projetos, através da identificação e análise de cr... more iii CASTRO, Eduardo Monteiro de Priorização de projetos, através da identificação e análise de critérios de seleção, relacionados aos objetivos estratégicos de negócio FGV, Rio de Janeiro, Setembro/2010. Dissertação de Mestrado -Fundação Getulio Vargas -Rio de Janeiro 1. Priorização de Projetos 2. Análise Multicritério 3. Administração CDD: CDU: iv Dedico este trabalho à minha esposa Adriane e aos meus filhos, Gustavo e Letícia, pelo apoio e compreensão nos momentos decisivos para a confecção desse estudo. VENCEMOS! v AGRADECIMENTOS À minha esposa Adriane por todo o apoio e força para superar mais esse desafio. Aos meus filhos Gustavo e Letícia pela compreensão da minha ausência e pela oportunidade de me realizar como pai. Aos meus pais Odayr e Sandra, que são meus exemplos de família e de vida. Ao meu orientador Professor Eduardo Marques, que com muita atenção me passou ensinamentos e conhecimentos que muito me ajudaram nesse trabalho. Aos professores do MIM (Master in International Management) -Mestrado Executivo Internacionalda Fundação Getulio Vargas, que com seus conhecimentos me auxiliaram na criação de uma nova percepção do mundo dos negócios. vi iii APRESENTAÇÃO O tema dessa dissertação de mestrado foi definido em decorrência da minha experiência profissional como consultor, que me propiciou a percepção das dificuldades encontradas pelas empresas em identificar os projetos mais relevantes e prioritários a serem executados, com base nos objetivos estratégicos definidos pela alta administração. Essa dificuldade aumenta ainda mais, pois, essa priorização de projetos não é estática, ou seja, uma fotografia. Ela deve ser atualizada sempre que os objetivos estratégicos sofram qualquer alteração, ou mesmo, quando o contexto em que a companhia está inserida passe por alguma mudança. Essa mudança no contexto onde está inserida a empresa se reflete diretamente nos conceitos atribuídos aos critérios para cada um dos projetos. No primeiro capítulo temos uma breve introdução ao assunto e apresentamos como está estruturada a dissertação. Eduardo Monteiro de Castro vii iv RESUMO O problema a ser tratado por essa dissertação de mestrado é a seleção de projetos, de qualquer natureza, a serem executados por uma empresa ou uma área/departamento de uma empresa, considerando o portfólio de projetos existente e o orçamento disponível para tal. O objetivo é ordenar os projetos ou grupos de projetos de forma a identificar os projetos mais relevantes e/ou prioritários para a empresa. Essa relevância é identificada através de critérios que são avaliados por especialistas da empresa ou departamento em questão. Esses critérios são definidos pelos especialistas da empresa e oriundos tanto do plano estratégico e dos objetivos estratégicos da empresa ou departamento, quanto da experiência desses especialistas. São identificados e discutidos previamente às atividades de ordenação dos projetos. Uma vez que esses projetos ou grupos de projetos estejam ordenados, basta seguir essa seqüência para definir quais projetos são comportados pelo orçamento da empresa ou do departamento. Após essa decisão os projetos selecionados deverão ser executados de forma a produzir o resultado esperado. Palavras-chaves: Priorização de projetos, Análise multicritério, Objetivos estratégicos, Orçamento de projetos.
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