cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7511282
title: Patogenicity of entomopathogenic fungi to Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae)

description: This study aimed to evaluate the pathogenicity, under laboratory conditions, of 49 isolates of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae against Spodoptera frugiperda larvae. Insects (3rd instar caterpillars) were immersed in 1 × 109 conidia/mL suspensions of each of the isolates for 10 seconds. After that, caterpillars were individually placed in Petri dishes with artificial diet and incubated at 26 ± 1°C and 12 hours of photophase, and they were evaluated daily for ten days. The B. bassiana isolates were more efficient, mainly Unioeste 26 strain, which reached 44.5% mortality and generated the greatest number of conidia in production testing of the fungus. Despite the low mortality percentage, these studies showed the potential of entomopathogenic fungi as promising agents for the control of S. frugiperda.
DOI: 10.6084/m9.figshare.7511282.v1
title: Patogenicity of entomopathogenic fungi to Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae)

description: This study aimed to evaluate the pathogenicity, under laboratory conditions, of 49 isolates of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae against Spodoptera frugiperda larvae. Insects (3rd instar caterpillars) were immersed in 1 × 109 conidia/mL suspensions of each of the isolates for 10 seconds. After that, caterpillars were individually placed in Petri dishes with artificial diet and incubated at 26 ± 1°C and 12 hours of photophase, and they were evaluated daily for ten days. The B. bassiana isolates were more efficient, mainly Unioeste 26 strain, which reached 44.5% mortality and generated the greatest number of conidia in production testing of the fungus. Despite the low mortality percentage, these studies showed the potential of entomopathogenic fungi as promising agents for the control of S. frugiperda.
DOI: 10.6084/m9.figshare.9696821
title: Professional stratification, economic inequality and social classes in late Nineteenth-century Brazil. Preliminary notes on the Brazilian imperial classes

description: ABSTRACT The article presents a panorama of socioeconomic hierarchies in late Nineteenth-century Brazil. Income analysis of social classes underpins these echelons. Within a theoretical and historical approach focused on social class, the article reckons that the Brazilian Empire was relatively egalitarian in terms of wages. A broad expressiveness of the lower classes, rather than a hypothetical robustness of the middle or the upper classes, explains this equality. The analysis of purchasing power and patterns of consumption made it possible to identify the degree of precariousness of the popular classes, as well as the existence of mainly urban middle classes. Lastly, salary data on the upper classes should not hide concentration of wealth, a main characteristic of the Empire’s decay, which was largely due to a polarized structure of slave property.
DOI: 10.6084/m9.figshare.7514114
title: The Institutional Presidency from a Comparative Perspective: Argentina and Brazil since the 1980s

description: This paper focuses on the evolution of the institutional presidency – meaning the cluster of agencies that directly support the chief of the executive – in Argentina and Brazil since their redemocratization in the 1980s. It investigates what explains the changes that have come about regarding the size of the institutional presidency and the types of agency that form it. Following the specialized literature, we argue that the growth of the institutional presidency is connected to developments occurring in the larger political system – that is, to the political challenges that the various presidents of the two countries have faced. Presidents adjust the format and mandate of the different agencies under their authority so as to better manage their relations with the political environment. In particular, we argue that the type of government (coalition or single-party) has had consequences for the structure of the presidency or, in other words, that different cabinet structures pose different challenges to presidents. This factor has not played a significant role in presidency-related studies until now, which have hitherto mostly been based on the case of the United States. Our empirical references, the presidencies of Argentina and Brazil, typical cases of coalitional as well as single-party presidentialism respectively allow us to show the impact of the type of government on the number and type of presidential agencies.
DOI: 10.6084/m9.figshare.7514114.v1
title: The Institutional Presidency from a Comparative Perspective: Argentina and Brazil since the 1980s

description: This paper focuses on the evolution of the institutional presidency – meaning the cluster of agencies that directly support the chief of the executive – in Argentina and Brazil since their redemocratization in the 1980s. It investigates what explains the changes that have come about regarding the size of the institutional presidency and the types of agency that form it. Following the specialized literature, we argue that the growth of the institutional presidency is connected to developments occurring in the larger political system – that is, to the political challenges that the various presidents of the two countries have faced. Presidents adjust the format and mandate of the different agencies under their authority so as to better manage their relations with the political environment. In particular, we argue that the type of government (coalition or single-party) has had consequences for the structure of the presidency or, in other words, that different cabinet structures pose different challenges to presidents. This factor has not played a significant role in presidency-related studies until now, which have hitherto mostly been based on the case of the United States. Our empirical references, the presidencies of Argentina and Brazil, typical cases of coalitional as well as single-party presidentialism respectively allow us to show the impact of the type of government on the number and type of presidential agencies.
DOI: 10.6084/m9.figshare.7513853.v1
title: Cooperation for Development, Brazilian Regional Leadership and Global Protagonism

description: This article aims to analyze Brazil’s policy towards South America during Luiz Inácio "Lula" da Silva’s government by discussing what kind of leadership the country was able to perform in the region during this time. The authors examine the role played by the policy of International Cooperation for Development on such regional leadership. The central argument is that although Brazil has performed the role of a regional leader, there is a need for distinguishing leadership for regional matters – inwards regional leadership – from leadership for global issues – outwards regional leadership. We argue that inwards regional leadership was in fact successfully performed by Brazil in South America, mainly due to its role as a Development Leader. On the other hand, we also verified that such leadership for regional matters did not always allow Brazil to act on behalf of the entire region on the global arena. Nevertheless, we argue that Brazilian diplomacy left behind the belief that, in order to have global protagonism, the country should use South America as a regional launching platform. Instead, Brazil has been making use of global coalitions such as IBSA and BRICS to boost its global role.
DOI: 10.6084/m9.figshare.7509362
title: Mathematical Modeling And Numerical Simulation of Dropwise Condensation on an Inclined Circular Tube

description: ABSTRACT: Dropwise condensation can improve heat transfer process and, consequently, leads to considerable reduction in size and weight of condensers as well as improvement in the dehumidification process in many applications, especially in civil transport aircraft. It can also be used as an efficient cooling tool for electronics and electrical systems in aircraft engineering and aerospace technology. In this paper, the stable dropwise condensation on an inclined tube is mathematically analyzed. To do this, the population of small droplets is estimated by population balance theory while an empirical correlation is used for large droplets. To calculate heat transfer across each droplet, sum of temperature drops due to droplet curvature, phase change at droplet-vapor interface, conduction through the droplet and promoter layer, are equated with surface subcooling. The total heat transfer is calculated with the given droplets population and heat transfer through single droplet. Subsequently, effects of various parameters, including surface subcooling, contact angle and contact angle hysteresis on the growth rate, maximum radius of droplet, droplets population, and total heat transfer rate, are investigated. Results show that growth rate and heat flux of small droplets are much higher than those of the larger ones; hence, surface with small droplets is preferred for dropwise condensation purposes. Droplets with low contact angle and contact angle hysteresis have higher heat transfer rates. Increasing the inclination of tube improves heat transfer process to such an extent that vertical tubes have higher heat transfer rate than the horizontal ones. This fact indicates that vertical tubes must be used for designing condensers with dropwise condensation, which is quite the opposite for condensers designed based on filmwise condensation.
DOI: 10.6084/m9.figshare.7513853
title: Cooperation for Development, Brazilian Regional Leadership and Global Protagonism

description: This article aims to analyze Brazil’s policy towards South America during Luiz Inácio "Lula" da Silva’s government by discussing what kind of leadership the country was able to perform in the region during this time. The authors examine the role played by the policy of International Cooperation for Development on such regional leadership. The central argument is that although Brazil has performed the role of a regional leader, there is a need for distinguishing leadership for regional matters – inwards regional leadership – from leadership for global issues – outwards regional leadership. We argue that inwards regional leadership was in fact successfully performed by Brazil in South America, mainly due to its role as a Development Leader. On the other hand, we also verified that such leadership for regional matters did not always allow Brazil to act on behalf of the entire region on the global arena. Nevertheless, we argue that Brazilian diplomacy left behind the belief that, in order to have global protagonism, the country should use South America as a regional launching platform. Instead, Brazil has been making use of global coalitions such as IBSA and BRICS to boost its global role.
DOI: 10.6084/m9.figshare.7509359.v1
title: MILK COMPOSITION OF SAANEN GOATS EXPERIMENTALLY INFECTED BY Staphylococcus aureus AND SUBJECTED TO TWO TREATMENT PROTOCOLS

description: Abstract: This study aimed to evaluate the chemical composition of milk after infection and treatment of mastitis caused by Staphylococcus aureus. Ten Saanen goats were used. Experimental infection was performed in 20 mammary glands, forming four groups, each consisting of five mammary glands. One group was treated with commercial antimicrobial and another with natural plant extract-based ointment. The other groups were constituted as control. The values obtained for fat, lactose, protein, total solids, and milk production were analyzed through the experimental moments, comparing them among each other and between experimental groups. Mastitis was diagnosed by milk microbiology after 24 hours of inoculation. The animals showed no changes in the clinical parameters evaluated. For the percentage of fat, protein, and total solids, there was an increase over the experimental moments. However, there was variation among the experimental groups. Given the importance of conventional antimicrobial therapy and the increased use of natural antimicrobials, obtained results showed equality between the two treatment options, especially regarding the maintenance of the main milk components.
DOI: 10.6084/m9.figshare.7509362.v1
title: Mathematical Modeling And Numerical Simulation of Dropwise Condensation on an Inclined Circular Tube

description: ABSTRACT: Dropwise condensation can improve heat transfer process and, consequently, leads to considerable reduction in size and weight of condensers as well as improvement in the dehumidification process in many applications, especially in civil transport aircraft. It can also be used as an efficient cooling tool for electronics and electrical systems in aircraft engineering and aerospace technology. In this paper, the stable dropwise condensation on an inclined tube is mathematically analyzed. To do this, the population of small droplets is estimated by population balance theory while an empirical correlation is used for large droplets. To calculate heat transfer across each droplet, sum of temperature drops due to droplet curvature, phase change at droplet-vapor interface, conduction through the droplet and promoter layer, are equated with surface subcooling. The total heat transfer is calculated with the given droplets population and heat transfer through single droplet. Subsequently, effects of various parameters, including surface subcooling, contact angle and contact angle hysteresis on the growth rate, maximum radius of droplet, droplets population, and total heat transfer rate, are investigated. Results show that growth rate and heat flux of small droplets are much higher than those of the larger ones; hence, surface with small droplets is preferred for dropwise condensation purposes. Droplets with low contact angle and contact angle hysteresis have higher heat transfer rates. Increasing the inclination of tube improves heat transfer process to such an extent that vertical tubes have higher heat transfer rate than the horizontal ones. This fact indicates that vertical tubes must be used for designing condensers with dropwise condensation, which is quite the opposite for condensers designed based on filmwise condensation.
DOI: 10.6084/m9.figshare.6502727
title: Value or Growth Strategy? Empirical Evidence in Brazil

description: ABSTRACT This article aimed at verifying the existence of value versus growth and at identifying the variables that best explain their impact on Brazilian stock profits. To this end, we tested book-to-market, price-earnings and price-to-cash flow variables. Two methodological approaches were employed: portfolio analysis, in which portfolios were formed according to each variable of interest; and regression analysis with panel data, based on individual assets. The sample was made up of companies with shares traded in BM&FBovespa during the 1995-2008 period. According to results found, growth stocks presented higher profits than value stocks. Thus, we may conclude that the well-documented value versus growth is not valid in Brazil, since empirical evidence supported growth strategies. Due to the long research period, results may signal prevalence of growth strategy in the long term. Furthermore, the high volatility of emerging countries’ capital markets was emphasized, as pointed out by Fama and French (1998). Moreover, to establish investment strategies that allow for greater profits, it was found that the variable that best identifies growth stocks is the book-to-market ratio.
DOI: 10.6084/m9.figshare.7509359
title: MILK COMPOSITION OF SAANEN GOATS EXPERIMENTALLY INFECTED BY Staphylococcus aureus AND SUBJECTED TO TWO TREATMENT PROTOCOLS

description: Abstract: This study aimed to evaluate the chemical composition of milk after infection and treatment of mastitis caused by Staphylococcus aureus. Ten Saanen goats were used. Experimental infection was performed in 20 mammary glands, forming four groups, each consisting of five mammary glands. One group was treated with commercial antimicrobial and another with natural plant extract-based ointment. The other groups were constituted as control. The values obtained for fat, lactose, protein, total solids, and milk production were analyzed through the experimental moments, comparing them among each other and between experimental groups. Mastitis was diagnosed by milk microbiology after 24 hours of inoculation. The animals showed no changes in the clinical parameters evaluated. For the percentage of fat, protein, and total solids, there was an increase over the experimental moments. However, there was variation among the experimental groups. Given the importance of conventional antimicrobial therapy and the increased use of natural antimicrobials, obtained results showed equality between the two treatment options, especially regarding the maintenance of the main milk components.
DOI: 10.6084/m9.figshare.6502727.v1
title: Value or Growth Strategy? Empirical Evidence in Brazil

description: ABSTRACT This article aimed at verifying the existence of value versus growth and at identifying the variables that best explain their impact on Brazilian stock profits. To this end, we tested book-to-market, price-earnings and price-to-cash flow variables. Two methodological approaches were employed: portfolio analysis, in which portfolios were formed according to each variable of interest; and regression analysis with panel data, based on individual assets. The sample was made up of companies with shares traded in BM&FBovespa during the 1995-2008 period. According to results found, growth stocks presented higher profits than value stocks. Thus, we may conclude that the well-documented value versus growth is not valid in Brazil, since empirical evidence supported growth strategies. Due to the long research period, results may signal prevalence of growth strategy in the long term. Furthermore, the high volatility of emerging countries’ capital markets was emphasized, as pointed out by Fama and French (1998). Moreover, to establish investment strategies that allow for greater profits, it was found that the variable that best identifies growth stocks is the book-to-market ratio.
DOI: 10.6084/m9.figshare.14269985.v1
title: Application of an alternative mesh morphing method on the numerical modeling of oscillating wave surge converters

description: ABSTRACT A technology capable of converting the horizontal motion of the ocean waves into energy by the application of a flap-piston system has been improved over the last few years, this device is known as oscillating wave surge converter. This system has great potential, already proven, for electric power generation. The computational fluid dynamics is one of the most used tools for the study of wave energy converters. In this context, the present paper proposes the application of an alternative mesh morphing method to represent the hydrodynamics of these devices, which is based on a bottom that oscillates with the converter, leading the flap to reach high inclinations without causing numerical divergences. The study is performed using the OpenFOAM computational code and its extension OLAFOAM. These are based on Reynolds Average Navier Stokes (RANS) turbulence modeling and the Volume of Fluid method (VOF) for the free surface representation, which are applied to a bidimensional model, allowing the numerical modeling of the converter. The proposed method presented good agreement of the results when compared to the experimental studies in similar hydrodynamic cases. The methodology based on a moving bottom presented relative differences, concerning the method that considers the bottom as fixed, between 4% and 17% for the cases where the flap is near to the ocean bottom and up to 8% for cases where it is further away.
DOI: 10.6084/m9.figshare.10025579.v1
title: Uncertainty estimation in hydrodynamic modeling using Bayesian techniques

description: ABSTRACT Uncertainty estimation analysis has emerged as a fundamental study to understand the effects of errors inherent to hydrodynamic modeling processes, of aleatory and epistemic nature, due to input data such as discharge, topography and bathymetry, to the structure and parameterization of the mathematical models used and to their necessary boundary and initial conditions. The study reported in this paper sought to apply a Bayesian-based methodology, associated with thousands of Markov Chain Monte Carlo simulations, in order to identify and quantify the uncertainty related to the Manning’s n roughness coefficient in a 1D hydrodynamic model and the total uncertainty involved in the prediction of hydrographs and water surface elevation profiles resulting from flood routing through a reach located in the upper São Francisco river, between the Abaeté river outlet and the town of Pirapora. The results show that the Bayesian scheme allowed an adequate posterior identification of the parametric uncertainties and of those associated to other sources of errors, with important changes in the prior probability distributions. In addition, the residuals analysis corroborates the applicability of the method to the analysis of uncertainties in hydrodynamic modeling through the use of a more flexible likelihood function than the classical one based on the hypotheses of normality, homoscedasticity and uncorrelated residuals. Future work includes the sensitivity evaluation of the posterior distributions to the addition of lateral inflows, especially concerning the residuals serial correlation, as well as the adoption of other variables to update the prior uncertainties, and the validation of the methodology through the use of the posterior distributions to estimate the total uncertainty involved in the prediction of floods other than the ones used in the inference process.
DOI: 10.6084/m9.figshare.14269985
title: Application of an alternative mesh morphing method on the numerical modeling of oscillating wave surge converters

description: ABSTRACT A technology capable of converting the horizontal motion of the ocean waves into energy by the application of a flap-piston system has been improved over the last few years, this device is known as oscillating wave surge converter. This system has great potential, already proven, for electric power generation. The computational fluid dynamics is one of the most used tools for the study of wave energy converters. In this context, the present paper proposes the application of an alternative mesh morphing method to represent the hydrodynamics of these devices, which is based on a bottom that oscillates with the converter, leading the flap to reach high inclinations without causing numerical divergences. The study is performed using the OpenFOAM computational code and its extension OLAFOAM. These are based on Reynolds Average Navier Stokes (RANS) turbulence modeling and the Volume of Fluid method (VOF) for the free surface representation, which are applied to a bidimensional model, allowing the numerical modeling of the converter. The proposed method presented good agreement of the results when compared to the experimental studies in similar hydrodynamic cases. The methodology based on a moving bottom presented relative differences, concerning the method that considers the bottom as fixed, between 4% and 17% for the cases where the flap is near to the ocean bottom and up to 8% for cases where it is further away.