cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.12094764
title: An Open-source Solver to Model the Catalytic Decomposition of Monopropellants for Space Thrusters

description: ABSTRACT: This paper presents a solver for the CFD (computational fluid dynamics) modeling of catalytic chambers in monopropellant thrusters based on the open-source OpenFOAM® (Open Field Operation and Manipulation) framework. A model was formulated and used to simulate the physical and thermochemical processes taking place inside the catalytic chambers of the monopropellant thrusters. The code integrates reacting gas flow in porous media, with mass and heat transport. The most important implemented functionalities were the separation of two reactive gases, one transient reactive gas flowing between the catalyst bed interstices (interstitial gas), and another static reactive gas on the surface of catalyst particles, or pellets (surface gas). Homogeneous and heterogeneous reactions occur on the interstitial gas and the catalyst particle, respectively. A flexible definition of porous properties, a calculation of multicomponent diffusion-flux mass, a diffusion mass coeffcient, a mass transfer coeffcient, and a heat transfer coeffcient were implemented as well. Experimental and analytical studies about hydrazine monopropellant thrusters in the literature were used to the case tests and verification of the solver. Temperature and mass fraction fields were simulated and compared. The results of the temperature profile are in agreement with experimental and theoretical studies found in the literature, and mass fraction presents some differences.
DOI: 10.6084/m9.figshare.12094764.v1
title: An Open-source Solver to Model the Catalytic Decomposition of Monopropellants for Space Thrusters

description: ABSTRACT: This paper presents a solver for the CFD (computational fluid dynamics) modeling of catalytic chambers in monopropellant thrusters based on the open-source OpenFOAM® (Open Field Operation and Manipulation) framework. A model was formulated and used to simulate the physical and thermochemical processes taking place inside the catalytic chambers of the monopropellant thrusters. The code integrates reacting gas flow in porous media, with mass and heat transport. The most important implemented functionalities were the separation of two reactive gases, one transient reactive gas flowing between the catalyst bed interstices (interstitial gas), and another static reactive gas on the surface of catalyst particles, or pellets (surface gas). Homogeneous and heterogeneous reactions occur on the interstitial gas and the catalyst particle, respectively. A flexible definition of porous properties, a calculation of multicomponent diffusion-flux mass, a diffusion mass coeffcient, a mass transfer coeffcient, and a heat transfer coeffcient were implemented as well. Experimental and analytical studies about hydrazine monopropellant thrusters in the literature were used to the case tests and verification of the solver. Temperature and mass fraction fields were simulated and compared. The results of the temperature profile are in agreement with experimental and theoretical studies found in the literature, and mass fraction presents some differences.
DOI: 10.6084/m9.figshare.7516892.v1
title: A study of patenting on water and wastewater treatment technologies

description: The aim of the study is to discuss the patenting of water and wastewater treatment technologies. More than 2.500 patent documents related to the topic were found and downloaded. The documents were analyzed by a software and processing tools. Patent indicators for the technology with high-value business and research were determined such as water treatment, countries, institutions and worldwide leader inventors according to the patented technology. The worldwide development of water and wastewater treatment technologies over the past twenty years is presented according to the record of patents. The delivery of all materials is done in a visualization tool that manages to make service more attractive, it is a friendlier and more comfortable product to use that offers a high-level update and effectiveness of information for decision making in a hydraulic project and research business.
DOI: 10.6084/m9.figshare.7516892
title: A study of patenting on water and wastewater treatment technologies

description: The aim of the study is to discuss the patenting of water and wastewater treatment technologies. More than 2.500 patent documents related to the topic were found and downloaded. The documents were analyzed by a software and processing tools. Patent indicators for the technology with high-value business and research were determined such as water treatment, countries, institutions and worldwide leader inventors according to the patented technology. The worldwide development of water and wastewater treatment technologies over the past twenty years is presented according to the record of patents. The delivery of all materials is done in a visualization tool that manages to make service more attractive, it is a friendlier and more comfortable product to use that offers a high-level update and effectiveness of information for decision making in a hydraulic project and research business.
DOI: 10.6084/m9.figshare.11997483.v1
title: Multidecadal Cycles of the Climatic Index Atlantic Meridional Mode: Sunspots that Affect North and Northeast of Brazil

description: ABSTRACT: Using the 1951-2017 historical series of the Atlantic Meridional Mode (AMM) index and the monthly number of sunspots, it was possible to observe a significant association between them. The use of wavelet and cross-wavelet analysis showed the presence of multidecadal cycles pronounced in eleven years, as well as cycles of 2.66 and 5.33. AMM index showed, in the part of the Sea Surface Temperature (SST), the presence of a weak signal of 21.33 years. Influence and association of sunspot variability on surface temperature in Northern and Northeastern regions of Brazil were investigated. Using a non-parametric statistical correlation test, the historical series of surface temperature anomalies in five locations (Belém, São Luiz, Fortaleza, Fernando de Noronha, and Natal) were compared with the monthly solar-series anomalies. The temperature series used were the minimum monthly average, the monthly average, and maximum monthly average temperatures, with their respective anomalies in relation to the mean. However, among all the series (except for São Luiz), the analyzed minimum temperature anomalies showed a negative correlation with sunspots. As a preliminary result, the analyzed climatic indexes present an apparent degree of memory associated with the variability of sunspot activity.
DOI: 10.6084/m9.figshare.11997483
title: Multidecadal Cycles of the Climatic Index Atlantic Meridional Mode: Sunspots that Affect North and Northeast of Brazil

description: ABSTRACT: Using the 1951-2017 historical series of the Atlantic Meridional Mode (AMM) index and the monthly number of sunspots, it was possible to observe a significant association between them. The use of wavelet and cross-wavelet analysis showed the presence of multidecadal cycles pronounced in eleven years, as well as cycles of 2.66 and 5.33. AMM index showed, in the part of the Sea Surface Temperature (SST), the presence of a weak signal of 21.33 years. Influence and association of sunspot variability on surface temperature in Northern and Northeastern regions of Brazil were investigated. Using a non-parametric statistical correlation test, the historical series of surface temperature anomalies in five locations (Belém, São Luiz, Fortaleza, Fernando de Noronha, and Natal) were compared with the monthly solar-series anomalies. The temperature series used were the minimum monthly average, the monthly average, and maximum monthly average temperatures, with their respective anomalies in relation to the mean. However, among all the series (except for São Luiz), the analyzed minimum temperature anomalies showed a negative correlation with sunspots. As a preliminary result, the analyzed climatic indexes present an apparent degree of memory associated with the variability of sunspot activity.
DOI: 10.6084/m9.figshare.12094242
title: Vortex Dynamics Analysis of Straight-Body-Type-Fuselage Fighter Using CFD Simulation

description: ABSTRACT: The choice for using a fighter fuselage in a fighter jet design affects a vortex generation advantageous in maneuverability. To study the effect of straight-body-type-fuselage (SBTF) on the vortex dynamic, a computational fluid dynamics (CFD) method is used, in order to simulate a model of SBTF fighter. The simulation uses Q-criterion to probe vortices, and a logarithmic grid to emphasize the micro-gridding effect of the turbulent boundary layer. The results show detailed quantitative velocity, pressure, trajectory of the vortex core, and wing negative surface pressure distribution (SPD), providing clear pictures of opportunity for performance improvement, better lift, agility, and maneuverability of a fighter if a model requires a new design.
DOI: 10.6084/m9.figshare.14270513
title: Key Terrestrial and Space Environment Sources

description: ABSTRACT Natural (Terrestrial & Space) Environment (NE) phenomena play a significant role in the design and flight of aerospace vehicles and in the integrity of the associated aerospace systems and structures. Both the terrestrial environment (0-90 km altitude) and the space environment (Earth orbital altitudes) parameters and their engineering application philosophy are given with emphasis on launch vehicle-affected terrestrial environment elements. This paper will describe the key terrestrial and space environment sources: wind; atmospheric; and orbital models used in the design and development of launch/space vehicles.
DOI: 10.6084/m9.figshare.7517639
title: Evaluation of the degree of implementation of the Program Research for SUS: shared management in health

description: ABSTRACT The study aimed to monitor the accomplishment and the degree of implementation of the Program 'Research for SUS: shared management in health', in Brazil. A multiple case design strategy was employed, involving an active search in the Programs´ documents and in the Health Research System of the Ministry of Health. The Program launched 5 editions, invested R$ 274.5 million in the hiring of 2.923 research projects, and had a decentralized implementation. The results indicate that the Project was considered 'Implemented' in 20 states, and 'Partially implemented' in the others. The success of the intervention can be due to the contribution of federal and state resources, the adherence of the scientific community and of the Brazilian Unified Health System (SUS) managers.
DOI: 10.6084/m9.figshare.12094242.v1
title: Vortex Dynamics Analysis of Straight-Body-Type-Fuselage Fighter Using CFD Simulation

description: ABSTRACT: The choice for using a fighter fuselage in a fighter jet design affects a vortex generation advantageous in maneuverability. To study the effect of straight-body-type-fuselage (SBTF) on the vortex dynamic, a computational fluid dynamics (CFD) method is used, in order to simulate a model of SBTF fighter. The simulation uses Q-criterion to probe vortices, and a logarithmic grid to emphasize the micro-gridding effect of the turbulent boundary layer. The results show detailed quantitative velocity, pressure, trajectory of the vortex core, and wing negative surface pressure distribution (SPD), providing clear pictures of opportunity for performance improvement, better lift, agility, and maneuverability of a fighter if a model requires a new design.
DOI: 10.6084/m9.figshare.14270513.v1
title: Key Terrestrial and Space Environment Sources

description: ABSTRACT Natural (Terrestrial & Space) Environment (NE) phenomena play a significant role in the design and flight of aerospace vehicles and in the integrity of the associated aerospace systems and structures. Both the terrestrial environment (0-90 km altitude) and the space environment (Earth orbital altitudes) parameters and their engineering application philosophy are given with emphasis on launch vehicle-affected terrestrial environment elements. This paper will describe the key terrestrial and space environment sources: wind; atmospheric; and orbital models used in the design and development of launch/space vehicles.
DOI: 10.6084/m9.figshare.7507622
title: Study of antibacterial action of hydroalcoholic extract of propolis red on Enterococcus faecalis

description: Introduction:Propolis is a complex resinous substance produced by bees that has therapeutic properties, such as antimicrobial activity, anti-inflammatory, healing. Few studies exist on the red variety of propolis, found in the state of Sergipe.Objective:Evaluation of the antimicrobial action of the extract of propolis red collected in the northeastern state of Sergipe, against strains of Enterococcus faecalis.Material and method:The red propolis samples were collected in Brejo Grande/SE – Brazil and identified according to their sensory characteristics, granulometry and physical chemical requirements. The content of flavonoids in dried extract was determined. Solutions of red propolis (EEP) were prepared at concentrations of 1%; 2.5%; 5% and 7.5%. The bacterial strain used was Enterococcus faecalis – ATCC 29212. The antibacterial activity was verified by in vitro tests (disk diffusion test and determination of minimum bactericidal concentration – CBM) and ex vivo (using human extracted teeth). The test, ex vivo contaminated teeth were divided into three groups with 10 teeth each. Group 1 was treated with propolis to 7.5% (concentration determined in CBM test), the Group 2 was treated as positive control with sodium hypochlorite solution 2.5% and Group 3 was used as a negative control and was treated only with sterile saline.Result:The extract of propolis promoted inhibition zone compared to results from solution of sodium hypochlorite to 2.5%, showing values between 12 and 16 mm. There was no bacterial growth after root conduct irrigation with EEP to 7.5%.Conclusion:Propolis collected showed medium content of flavonoids (1.8%) and physical chemical characteristics consistent to those required by the Brazilian Government. At 7.5% of propolis extract, we observed a higher antibacterial potential than others groups.
DOI: 10.6084/m9.figshare.7517639.v1
title: Evaluation of the degree of implementation of the Program Research for SUS: shared management in health

description: ABSTRACT The study aimed to monitor the accomplishment and the degree of implementation of the Program 'Research for SUS: shared management in health', in Brazil. A multiple case design strategy was employed, involving an active search in the Programs´ documents and in the Health Research System of the Ministry of Health. The Program launched 5 editions, invested R$ 274.5 million in the hiring of 2.923 research projects, and had a decentralized implementation. The results indicate that the Project was considered 'Implemented' in 20 states, and 'Partially implemented' in the others. The success of the intervention can be due to the contribution of federal and state resources, the adherence of the scientific community and of the Brazilian Unified Health System (SUS) managers.
DOI: 10.6084/m9.figshare.12027687.v1
title: Nonlinear mixed effects models for comparing growth curves for Guzerá cattle

description: ABSTRACT The objective of the present work was to evaluate the accuracy of the fitted Gompertz and von Bertalanffy models for male and female Guzerá cattle, respectively. Four production regions in Northeast Brazil were included in the models as a fixed effect, and the animals were included as a random effect. In addition, the coefficients of the growth models in the production regions were compared. The accuracy of the fit equations was assessed with the Akaike information criterion, Bayesian information criterion, mean absolute deviation, mean squared error, and coefficient of determination. Confidence intervals were used for comparing the production regions. The Guzerá males in the Gado-Algodão and Serra Geral da Bahia production regions were statistically equal in asymptotic weight, and the animals in the Itapetinga-Valadares and Mata-Agreste regions had equivalent maturity rates. The Guzerá females in the Itapetinga-Valadares and Serra Geral da Bahia regions had the same asymptotic weight. The maturity rates in Itapetinga-Valadares were equal to those estimated for Mata-Agreste and Serra Geral da Bahia. The inclusion of the fixed effect of the production region and the random effect of the animals in the models improved the fit quality and increased the possibility of generating growth curves for each region.
DOI: 10.6084/m9.figshare.7507622.v1
title: Study of antibacterial action of hydroalcoholic extract of propolis red on Enterococcus faecalis

description: Introduction:Propolis is a complex resinous substance produced by bees that has therapeutic properties, such as antimicrobial activity, anti-inflammatory, healing. Few studies exist on the red variety of propolis, found in the state of Sergipe.Objective:Evaluation of the antimicrobial action of the extract of propolis red collected in the northeastern state of Sergipe, against strains of Enterococcus faecalis.Material and method:The red propolis samples were collected in Brejo Grande/SE – Brazil and identified according to their sensory characteristics, granulometry and physical chemical requirements. The content of flavonoids in dried extract was determined. Solutions of red propolis (EEP) were prepared at concentrations of 1%; 2.5%; 5% and 7.5%. The bacterial strain used was Enterococcus faecalis – ATCC 29212. The antibacterial activity was verified by in vitro tests (disk diffusion test and determination of minimum bactericidal concentration – CBM) and ex vivo (using human extracted teeth). The test, ex vivo contaminated teeth were divided into three groups with 10 teeth each. Group 1 was treated with propolis to 7.5% (concentration determined in CBM test), the Group 2 was treated as positive control with sodium hypochlorite solution 2.5% and Group 3 was used as a negative control and was treated only with sterile saline.Result:The extract of propolis promoted inhibition zone compared to results from solution of sodium hypochlorite to 2.5%, showing values between 12 and 16 mm. There was no bacterial growth after root conduct irrigation with EEP to 7.5%.Conclusion:Propolis collected showed medium content of flavonoids (1.8%) and physical chemical characteristics consistent to those required by the Brazilian Government. At 7.5% of propolis extract, we observed a higher antibacterial potential than others groups.
DOI: 10.6084/m9.figshare.11869302
title: Metabolisable energy levels for stress broilers under thermal stress

description: ABSTRACT The research was carried out with the objective of evaluating different levels of metabolisable energy (3050, 3100, 3150, 3200 and 3250 kcal.kg-1) in the diet of 22-to-42-day-old broilers kept in an environment of thermal stress. Three hundred male chicks weighing 814.7 g initial average weight were distributed in a completely randomised design with five treatments, six replications and ten birds per experimental unit. Feed metabolisable energy levels did not influence (P &gt; 0.05) the performance variables of feed conversion, daily weight gain and daily feed intake in the two phases studied. There were no statistical differences in carcass yields: carcass, chest, thigh, drumstick, heart, wing and back. Differences were observed for the two variables gizzard yield and abdominal fat. A linear increase in the percentage of abdominal fat with an increase in energy levels in the diet was observed. The 3100 kcal.kg-1 level of metabolisable energy is the level indicated by this research because it results in lower abdominal fat content and lower cost per kilo of feed.
DOI: 10.6084/m9.figshare.11869302.v1
title: Metabolisable energy levels for stress broilers under thermal stress

description: ABSTRACT The research was carried out with the objective of evaluating different levels of metabolisable energy (3050, 3100, 3150, 3200 and 3250 kcal.kg-1) in the diet of 22-to-42-day-old broilers kept in an environment of thermal stress. Three hundred male chicks weighing 814.7 g initial average weight were distributed in a completely randomised design with five treatments, six replications and ten birds per experimental unit. Feed metabolisable energy levels did not influence (P &gt; 0.05) the performance variables of feed conversion, daily weight gain and daily feed intake in the two phases studied. There were no statistical differences in carcass yields: carcass, chest, thigh, drumstick, heart, wing and back. Differences were observed for the two variables gizzard yield and abdominal fat. A linear increase in the percentage of abdominal fat with an increase in energy levels in the diet was observed. The 3100 kcal.kg-1 level of metabolisable energy is the level indicated by this research because it results in lower abdominal fat content and lower cost per kilo of feed.
DOI: 10.6084/m9.figshare.12027687
title: Nonlinear mixed effects models for comparing growth curves for Guzerá cattle

description: ABSTRACT The objective of the present work was to evaluate the accuracy of the fitted Gompertz and von Bertalanffy models for male and female Guzerá cattle, respectively. Four production regions in Northeast Brazil were included in the models as a fixed effect, and the animals were included as a random effect. In addition, the coefficients of the growth models in the production regions were compared. The accuracy of the fit equations was assessed with the Akaike information criterion, Bayesian information criterion, mean absolute deviation, mean squared error, and coefficient of determination. Confidence intervals were used for comparing the production regions. The Guzerá males in the Gado-Algodão and Serra Geral da Bahia production regions were statistically equal in asymptotic weight, and the animals in the Itapetinga-Valadares and Mata-Agreste regions had equivalent maturity rates. The Guzerá females in the Itapetinga-Valadares and Serra Geral da Bahia regions had the same asymptotic weight. The maturity rates in Itapetinga-Valadares were equal to those estimated for Mata-Agreste and Serra Geral da Bahia. The inclusion of the fixed effect of the production region and the random effect of the animals in the models improved the fit quality and increased the possibility of generating growth curves for each region.
DOI: 10.6084/m9.figshare.5772594
title: The work with datum and database: considerations through and enunciative theory of language

description: Abstract: The objective is to discuss the notions of datum and analysis when the theory in question is an enunciative one, bearing in mind two central questions: if the several enunciative theories question language through a semantic point of view, aiming at studying what is singular in the speech of each speaker, how can an enunciative study be based on a corpus and, even more, constitute a database? Are enunciative studies not refractory, in a certain way, to the notion of linguistic study based on corpora? In order to answer these two questions, we present the example of a database of language disorders, ENUNSIL (Banco de Dados Enunciação e SIntoma na Linguagem), considering that, if the notion of datum is problematic to enunciative studies, such difficulties augment exponentially when symptomatic speech is at stake.