cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7515473
title: Referral and counter-referral system in the care network for drug users: contributions from social network analysis

description: Abstract This paper analyzed the reference and counter-referral system of a care network for drug users, from Social Network Analysis (SNA). It is a cross-sectional survey conducted in the city of Juiz de Fora, Minas Gerais, with professionals from the drug users’ treatment services. Data was collected through a questionnaire that measured referral and counter-referral relations of drug users between network services. Data from SNA was analyzed using the Gephi software, extracting the following metrics: Degree Centrality and Intermediation Centrality. Results indicated a higher prevalence of referencing rather than counter-referral, with a centralization in specialized, medium and high complexity, and emergency services. It is expected to demonstrate the potential of SNA in the understanding of organizational networks and influence new research that aims to comprehend different care realities for drug users in national and international context.
DOI: 10.6084/m9.figshare.7515473.v1
title: Referral and counter-referral system in the care network for drug users: contributions from social network analysis

description: Abstract This paper analyzed the reference and counter-referral system of a care network for drug users, from Social Network Analysis (SNA). It is a cross-sectional survey conducted in the city of Juiz de Fora, Minas Gerais, with professionals from the drug users’ treatment services. Data was collected through a questionnaire that measured referral and counter-referral relations of drug users between network services. Data from SNA was analyzed using the Gephi software, extracting the following metrics: Degree Centrality and Intermediation Centrality. Results indicated a higher prevalence of referencing rather than counter-referral, with a centralization in specialized, medium and high complexity, and emergency services. It is expected to demonstrate the potential of SNA in the understanding of organizational networks and influence new research that aims to comprehend different care realities for drug users in national and international context.
DOI: 10.6084/m9.figshare.6125210.v1
title: DETERMINATION OF GROWTH AND NUTRIENT ACCUMULATION IN BELLA VISTA ONION

description: ABSTRACT Knowledge of the nutrient uptake by crops at different stages of growth may provide the basis for rational application of fertilizers, which may lead to reduced production costs and improved use of fertilizers by plants. Based on this knowledge, we conducted this study to determine the biomass and nutrient accumulation curve of the onion cultivar Bella Vista in a system of transplanted seedlings. The experiment was carried out in Ituporanga-SC, Brazil, by using a randomized block design with three replicates. Eleven plant collections were carried out throughout the crop cycle. The variables evaluated included plant length; total dry biomass of leaves, bulbs, and roots; and concentrations of macro- and micronutrients. The maximum dry biomass accumulation in the shoots and bulbs at 140 days after transplanting (DAT) was 4.26 and 27.41 mg per plant, respectively, which contributed to 13% and 85% of the whole plant dry biomass at the end of the cycle, respectively. Potassium (K, 521.6 mg) was accumulated in the largest quantity per plant, followed by nitrogen (N, 465.7 mg), calcium (Ca, 253.3 mg), sulfur (S, 109.0 mg), magnesium (Mg, 86.9 mg), and phosphorus (P, 76.5 mg). The micronutrient accumulation was as follows: iron (Fe, 6,227.5 µg), boron (B, 902.3 µg), zinc (Zn, 573.7 µg), manganese (Mn, 573.7 µg), and copper (Cu, 241.4 µg).
DOI: 10.6084/m9.figshare.7512317
title: Scientific events, power relationships and practices of researchers

description: The aim of the article is to discuss theoretically the power relationships that materialize themselves in practices carried out by researchers in scientific forums, based on the Pierre Bourdieu's concepts of production, reproduction and distinction in the scientific universe. We assume that events are instances of reproduction of scientific activity in which power relationships are intend to maintain and perpetuate positions attained. We conducted a literature review on the nature, size, functions and organization of scientific forums as instruments that enable the production and dissemination of knowledge. We point out that ideological components are determinant of unequal relationships between the dominant and dominated in the scientific forums, while ratifying the dynamics of social reproduction. We discuss how power relationships develop in the acts and discourses that constitute researchers' practices during scientific forums, particularly the scenic resources of actions and the scientific effects of representations of domination.
DOI: 10.6084/m9.figshare.7512317.v1
title: Scientific events, power relationships and practices of researchers

description: The aim of the article is to discuss theoretically the power relationships that materialize themselves in practices carried out by researchers in scientific forums, based on the Pierre Bourdieu's concepts of production, reproduction and distinction in the scientific universe. We assume that events are instances of reproduction of scientific activity in which power relationships are intend to maintain and perpetuate positions attained. We conducted a literature review on the nature, size, functions and organization of scientific forums as instruments that enable the production and dissemination of knowledge. We point out that ideological components are determinant of unequal relationships between the dominant and dominated in the scientific forums, while ratifying the dynamics of social reproduction. We discuss how power relationships develop in the acts and discourses that constitute researchers' practices during scientific forums, particularly the scenic resources of actions and the scientific effects of representations of domination.
DOI: 10.6084/m9.figshare.11313962.v1
title: Nutritional Status, Lifestyle and Lipid Profile in Vegetarians

description: Abstract Background: Vegetarian diets have been linked to reduced risk of chronic noncommunicable diseases, since they positively modulate biochemical parameters, particularly those related with glycemic control and lipemia, and considered as potential strategy for weight control. Objective: To compare the nutritional status, lifestyle and lipid profile of adult vegetarians with omnivores in a sample of individuals in the city of São Paulo. Methods: This was a cross-sectional study. Anthropometric, biochemical and lifestyle variables were compared between vegetarians and omnivores. A significance level of 5% was considered for all analyses. Results: Vegetarians were more likely to practice physical activity (64.3% vs 42.5%, p = 0.056) and consuming dietary supplements (48.1% vs 20.5%, p = 0.012). There was no statistically significant difference for the variables: age, sex, triglycerides, total cholesterol and low-density lipoprotein between the two groups. Vegetarians had significantly lower weight [60.8 kg (56.7 - 69.4) vs 71.1 kg (58.0 - 75.4), p = 0.038], BMI [22.4 kg/m2 (20.9 - 23.8) vs 24.6 kg/m2 (21.7 - 26.1), p = 0.001], and waist circumference [(81.8 ± 8.2 vs 87.8 ± 10.9 cm, p = 0.003)], and higher high-density lipoprotein (54.88 ± 14.44 vs 47.30 ± 12.27 mg /dL p = 0.008) than omnivores. Conclusion: Compared with omnivores, vegetarians had a better nutritional status, with lower BMI and waist circumference, significantly higher levels of plasma lipoprotein high-density, and healthier lifestyle.
DOI: 10.6084/m9.figshare.7517339
title: Validation of a simplified computer simulation method for plastic forming of metals by conventional tensile tests

description: Abstract This work was developed in order to validate a simplified computer simulation method for application in the drawing processes. The results of tensile tests on AISI 1004, AISI 1020 steel and copper were compared to those of computer simulations performed using the Deform-3D TM software. Each specimen was assumed to be an elasto-plastic material and was meshed with 50,000 finite elements. Young's modulus and Poisson's ratio were the only material properties considered in the elastic region; the parameters of Hollomon's equation were used in the plastic region up to constriction. A strain rate of 1x10-3 s-1 was applied during the simulations. In the plastic region, up to the point of constriction, the curves obtained from the simulations showed reasonable correspondence to those determined from physical testing. However, the former diverged from the latter in the elastic and elastic-plastic transition regions. This divergence indicates that microstructural factors may have a greater influence in the transition region than in the plastic region. Moreover, the correlation obtained in the plastic region indicates that the proposed method has the potential to be applied in drawing processes.
DOI: 10.6084/m9.figshare.7517339.v1
title: Validation of a simplified computer simulation method for plastic forming of metals by conventional tensile tests

description: Abstract This work was developed in order to validate a simplified computer simulation method for application in the drawing processes. The results of tensile tests on AISI 1004, AISI 1020 steel and copper were compared to those of computer simulations performed using the Deform-3D TM software. Each specimen was assumed to be an elasto-plastic material and was meshed with 50,000 finite elements. Young's modulus and Poisson's ratio were the only material properties considered in the elastic region; the parameters of Hollomon's equation were used in the plastic region up to constriction. A strain rate of 1x10-3 s-1 was applied during the simulations. In the plastic region, up to the point of constriction, the curves obtained from the simulations showed reasonable correspondence to those determined from physical testing. However, the former diverged from the latter in the elastic and elastic-plastic transition regions. This divergence indicates that microstructural factors may have a greater influence in the transition region than in the plastic region. Moreover, the correlation obtained in the plastic region indicates that the proposed method has the potential to be applied in drawing processes.
DOI: 10.6084/m9.figshare.11313962
title: Nutritional Status, Lifestyle and Lipid Profile in Vegetarians

description: Abstract Background: Vegetarian diets have been linked to reduced risk of chronic noncommunicable diseases, since they positively modulate biochemical parameters, particularly those related with glycemic control and lipemia, and considered as potential strategy for weight control. Objective: To compare the nutritional status, lifestyle and lipid profile of adult vegetarians with omnivores in a sample of individuals in the city of São Paulo. Methods: This was a cross-sectional study. Anthropometric, biochemical and lifestyle variables were compared between vegetarians and omnivores. A significance level of 5% was considered for all analyses. Results: Vegetarians were more likely to practice physical activity (64.3% vs 42.5%, p = 0.056) and consuming dietary supplements (48.1% vs 20.5%, p = 0.012). There was no statistically significant difference for the variables: age, sex, triglycerides, total cholesterol and low-density lipoprotein between the two groups. Vegetarians had significantly lower weight [60.8 kg (56.7 - 69.4) vs 71.1 kg (58.0 - 75.4), p = 0.038], BMI [22.4 kg/m2 (20.9 - 23.8) vs 24.6 kg/m2 (21.7 - 26.1), p = 0.001], and waist circumference [(81.8 ± 8.2 vs 87.8 ± 10.9 cm, p = 0.003)], and higher high-density lipoprotein (54.88 ± 14.44 vs 47.30 ± 12.27 mg /dL p = 0.008) than omnivores. Conclusion: Compared with omnivores, vegetarians had a better nutritional status, with lower BMI and waist circumference, significantly higher levels of plasma lipoprotein high-density, and healthier lifestyle.
DOI: 10.6084/m9.figshare.7507538
title: Priming corn seeds with plant growth regulator

description: Abstract This study aimed to evaluate the plant growth regulator application, in different doses, on priming, with and without water restriction, in corn seeds. Evaluations were carried out in two periods (0 to 30 days of storage), with treatments consisting of seeds primed in water (0.0 MPa) and polyethylene glycol 6000 solution (-0.4 MPa), with or without plant growth regulator added in different doses, plus a control group. The amount of plant growth regulator was standardized by the gibberellic acid concentration in the commercial product, adopting the doses zero, 1, 2 and 3 mg of gibberellic acid. L-1 solution. After priming, the seeds were dried in an oven with forced air circulation for nine hours, and evaluated for water content, percentage and first count of germination, percentage of abnormal seedlings and non-germinated seeds, cold test, seedling length and dry weight and vigor index. Priming with water restriction -0.4 MPa, in solution of polyethylene glycol 6000, improves the vigor; however, the addition of plant growth regulator in priming does not provide increase in corn seeds quality. Corn priming in water, regardless the addition of plant growth regulator, reduces the ability of the seeds to withstand storage.
DOI: 10.6084/m9.figshare.7507538.v1
title: Priming corn seeds with plant growth regulator

description: Abstract This study aimed to evaluate the plant growth regulator application, in different doses, on priming, with and without water restriction, in corn seeds. Evaluations were carried out in two periods (0 to 30 days of storage), with treatments consisting of seeds primed in water (0.0 MPa) and polyethylene glycol 6000 solution (-0.4 MPa), with or without plant growth regulator added in different doses, plus a control group. The amount of plant growth regulator was standardized by the gibberellic acid concentration in the commercial product, adopting the doses zero, 1, 2 and 3 mg of gibberellic acid. L-1 solution. After priming, the seeds were dried in an oven with forced air circulation for nine hours, and evaluated for water content, percentage and first count of germination, percentage of abnormal seedlings and non-germinated seeds, cold test, seedling length and dry weight and vigor index. Priming with water restriction -0.4 MPa, in solution of polyethylene glycol 6000, improves the vigor; however, the addition of plant growth regulator in priming does not provide increase in corn seeds quality. Corn priming in water, regardless the addition of plant growth regulator, reduces the ability of the seeds to withstand storage.
DOI: 10.6084/m9.figshare.6858062.v1
title: Direct Numerical Simulation of a Compressible Flow and Matrix-Free Analysis of its Instabilities over an Open Cavity

description: ABSTRACT: This study takes a Jacobian-free approach based on the Arnoldi iteration to present a method to perform hydrodynamic instability analysis based on Direct Numerical Simulations. The method employs high order spatial and temporal discretizations for the flow simulation and has very low requirements of computational time and memory, compared to conventional matrix-forming methods. Details of the numerical treatment applied to guarantee consistency in the numerical solution are discussed, such as mesh and domain dependencies, and buffer zones for the open boundary conditions. The implementation presented here is applicable to any flow with Cartesian geometry, however, the method can be extended to complex geometries and three-dimensional flows.
DOI: 10.6084/m9.figshare.6858062
title: Direct Numerical Simulation of a Compressible Flow and Matrix-Free Analysis of its Instabilities over an Open Cavity

description: ABSTRACT: This study takes a Jacobian-free approach based on the Arnoldi iteration to present a method to perform hydrodynamic instability analysis based on Direct Numerical Simulations. The method employs high order spatial and temporal discretizations for the flow simulation and has very low requirements of computational time and memory, compared to conventional matrix-forming methods. Details of the numerical treatment applied to guarantee consistency in the numerical solution are discussed, such as mesh and domain dependencies, and buffer zones for the open boundary conditions. The implementation presented here is applicable to any flow with Cartesian geometry, however, the method can be extended to complex geometries and three-dimensional flows.
DOI: 10.6084/m9.figshare.7102577.v1
title: Trajectory Optimization of Launch Vehicles Using Object-oriented Programming

description: ABSTRACT: The aim of this study is to model launch vehicles with focus on 3-DOF trajectory optimization using a modular approach. Despite the large number of operational launch vehicles, they usually consist of basic components and subsystems. In other words, a launch vehicle is an assembly of stages, which in turn is divided into propellant system and engine, and the engine is an assembly of basic components such as pumps, turbines, combustion chamber, and nozzle. To allow future extension and reuse of the codes, a modular structure using object-oriented programming is used. Two formulations of state equations of the trajectory and two optimization methods are described. The launch vehicle performance will be measured by payload mass for a given mission. The simulations of the VLS-1, Ariane 5 and VLS-Alfa were performed and showed good agreement with the literature.
DOI: 10.6084/m9.figshare.7131548
title: Aerodynamic Evaluation of Different Car Carrier Devices for Drag Reduction Using CFD

description: ABSTRACT: Aerodynamic of commercial trucks has been extensively studied due to their impact on fuel efficiency; reducing consumption is one of the most important and challenging issues for the trucking industry. In this paper, several Computational Fluid Dynamic (CFD) simulations are performed to evaluate the drag of a standard car carrier and its different modifications. Therefore, several covers, which act as aerodynamic devices, are tested to determine their effectiveness in fuel consumption. The study compares the drag coefficients, velocity vectors, pressure contours, and turbulence kinetic energy of different fairing configurations. The results show that, although all covers reduce the drag coefficient compared to the conventional car carrier, two of them have significant drag reductions.
DOI: 10.6084/m9.figshare.7131548.v1
title: Aerodynamic Evaluation of Different Car Carrier Devices for Drag Reduction Using CFD

description: ABSTRACT: Aerodynamic of commercial trucks has been extensively studied due to their impact on fuel efficiency; reducing consumption is one of the most important and challenging issues for the trucking industry. In this paper, several Computational Fluid Dynamic (CFD) simulations are performed to evaluate the drag of a standard car carrier and its different modifications. Therefore, several covers, which act as aerodynamic devices, are tested to determine their effectiveness in fuel consumption. The study compares the drag coefficients, velocity vectors, pressure contours, and turbulence kinetic energy of different fairing configurations. The results show that, although all covers reduce the drag coefficient compared to the conventional car carrier, two of them have significant drag reductions.
DOI: 10.6084/m9.figshare.7046054
title: Construction Methods and Comparative Evaluation of Metal Deployable Load-carrying Shell Structures

description: ABSTRACT: This study describes the main regularities for the construction of deployable metal shells of a cylindrical type. The comparative analysis of the efficiency of compact folding methods of thin metal shells of cylindrical and conical types, capable of maintaining the initial load-carrying capacity after unfolding without applying the additional strengthening methods, is presented. The range of possible parameters of long-length structures, constructed on the basis of rigid deployable pressurized shells, is characterized. The paper gives the qualitative and quantitative evaluation of basic functional characteristics of folding inflatable metal structures of cylindrical and conical types under the action of a complex of characteristic external loads, close to the maximum allowable ones. The result of experimental operability confirmation of the proposed structures' configurations is presented.
DOI: 10.6084/m9.figshare.7046054.v1
title: Construction Methods and Comparative Evaluation of Metal Deployable Load-carrying Shell Structures

description: ABSTRACT: This study describes the main regularities for the construction of deployable metal shells of a cylindrical type. The comparative analysis of the efficiency of compact folding methods of thin metal shells of cylindrical and conical types, capable of maintaining the initial load-carrying capacity after unfolding without applying the additional strengthening methods, is presented. The range of possible parameters of long-length structures, constructed on the basis of rigid deployable pressurized shells, is characterized. The paper gives the qualitative and quantitative evaluation of basic functional characteristics of folding inflatable metal structures of cylindrical and conical types under the action of a complex of characteristic external loads, close to the maximum allowable ones. The result of experimental operability confirmation of the proposed structures' configurations is presented.
DOI: 10.6084/m9.figshare.7102577
title: Trajectory Optimization of Launch Vehicles Using Object-oriented Programming

description: ABSTRACT: The aim of this study is to model launch vehicles with focus on 3-DOF trajectory optimization using a modular approach. Despite the large number of operational launch vehicles, they usually consist of basic components and subsystems. In other words, a launch vehicle is an assembly of stages, which in turn is divided into propellant system and engine, and the engine is an assembly of basic components such as pumps, turbines, combustion chamber, and nozzle. To allow future extension and reuse of the codes, a modular structure using object-oriented programming is used. Two formulations of state equations of the trajectory and two optimization methods are described. The launch vehicle performance will be measured by payload mass for a given mission. The simulations of the VLS-1, Ariane 5 and VLS-Alfa were performed and showed good agreement with the literature.
DOI: 10.6084/m9.figshare.7273790
title: Unmanned Aerial Vehicle Propagation Datalink Tool Based on a Hybrid Multiscale Modeling

description: ABSTRACT: This article presents a hybrid computational method to address the datalink characteristics of an Unmanned Aerial Vehicle (UAV) relay. It uses the 3D far-field gain data from the antennas (UAV and ground station), separately computed or based on available measurements as inputs, and then applies the 2-Ray propagation model, taking into consideration the ground permittivity and the respective antenna heights. By doing so, different numerical approaches cover the two different physical scales. Since the installed antennas (i.e. antennas considered placed on the UAV fuselage) performances are considered, a higher reliability can be achieved with the covered procedure, at lower costs when compared to field measurements. Results for different example scenarios are presented and discussed.