cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7020299
title: Association between vocal problems and working time in public servants of a Federal University in Southern Brazil

description: Abstract Background Voice is an important means of communication and is considered a fundamental working tool. Due to physical and social interference, work can interfere with the quality of the voice and, consequently, with the life of the worker. Objective To investigate the association between thevocal problems and gender, work time, role performed and perceived stress among servants of a Brazilian federal university. Method This is an observational, transversal and quantitative study. The research participants were the effective servers that were active in the second half of 2016 of any of the campuses of the Federal University of Rio Grande. The evaluation instrument was sent by e-mail. The questionnaire was composed of questions that asked for demographic data and two standardized evaluations: Quality of life in voice and Perceived Stress Scale. The absolute and relative frequency were the descriptive analysis. The level of statistical significance was 5% for two-tailed tests. Results The sample was of 708 servers, (36.1% of the total). The prevalence of vocal problems was 24.3% (95% CI 21.1% to 27.4%). The vocal problems were more frequent in the servers that had been working for more than 10 years, mainly in males and administrative technicians. The results showed that individuals with higher levels of stress have fewer vocal problems. Conclusion It was concluded that there was a greater occurrence of vocal problems in servers with longer working hours and in individuals with lower stress level.
DOI: 10.6084/m9.figshare.7020302.v1
title: Comparative evaluation of trap efficiency for the capture and collection of Aedes aegypti under field conditions

description: Abstract Background Studies that improve and/or assess the ability of traps in vector detection, facilitate the control of diseases caused by these vectors. Objective The objective of this study was to compare four types of traps for A. aegypti capture and collection under field conditions, and to evaluate the influences of temperature and precipitation on the efficiency of these traps. Method Ovitraps (filter paper and palette), “mosquitéricas” and MosquiTRAP® were installed in 10 city blocks, which received on each face, one type of trap. Qualitative and quantitative entomological indices were calculated for all traps. Results The “mosquitéricas” trap had the lowest positivity index (3%). Only the IPAaegypti and IDAaegypti indices showed a positive relationship with temperature and precipitation, respectively. The ovitraps had up to 6.6 times more chances of positivity for A. aegypti when compared to MosquiTRAP®, with no significant difference between the filter paper and the palette substrates. Conclusion The ovitraps presented the best indices to be used in the surveillance of A. aegypti . The recommendation to use filter paper as a substrate for oviposition is imperative because of its lower cost, easier manufacturing, transport and storage, as well as better visibility of the deposited eggs.
DOI: 10.6084/m9.figshare.7020299.v1
title: Association between vocal problems and working time in public servants of a Federal University in Southern Brazil

description: Abstract Background Voice is an important means of communication and is considered a fundamental working tool. Due to physical and social interference, work can interfere with the quality of the voice and, consequently, with the life of the worker. Objective To investigate the association between thevocal problems and gender, work time, role performed and perceived stress among servants of a Brazilian federal university. Method This is an observational, transversal and quantitative study. The research participants were the effective servers that were active in the second half of 2016 of any of the campuses of the Federal University of Rio Grande. The evaluation instrument was sent by e-mail. The questionnaire was composed of questions that asked for demographic data and two standardized evaluations: Quality of life in voice and Perceived Stress Scale. The absolute and relative frequency were the descriptive analysis. The level of statistical significance was 5% for two-tailed tests. Results The sample was of 708 servers, (36.1% of the total). The prevalence of vocal problems was 24.3% (95% CI 21.1% to 27.4%). The vocal problems were more frequent in the servers that had been working for more than 10 years, mainly in males and administrative technicians. The results showed that individuals with higher levels of stress have fewer vocal problems. Conclusion It was concluded that there was a greater occurrence of vocal problems in servers with longer working hours and in individuals with lower stress level.
DOI: 10.6084/m9.figshare.7020290
title: Influence of Brazilian pine seed flour addition on rheological, chemical and sensory properties of gluten-free rice flour cakes

description: ABSTRACT: Brazilian pine seeds (pinhão) are gluten-free seeds produced by the native pine species named Araucaria angustifolia. In this study, gluten-free cake mixes composed of Brazilian pine seed flour and rice flour were developed. The cake mixes were produced following a Simplex Centroid experimental design, with rice flour and Brazilian pine seed flour contents ranging from 50 to 100% and from 0 to 50%, respectively. Mixes were analyzed for chemical composition, apparent paste viscosity, and particle size distribution. The resulting cakes were analyzed for sensory acceptance, texture, specific volume and chemical composition. The Brazilian pine seed flour showed a peak viscosity on heating of 1.761Pa.s against 4.747Pa.s for the 100% rice flour sample. The variation of firmness of cakes decreased with increasing percentage of Brazilian pine seed flour. Cakes containing Brazilian pine seed flour at 25-37.5% of the formulation presented highest overall acceptance.
DOI: 10.6084/m9.figshare.7020293
title: External preference map to evaluate the acceptance of light and diet yogurt preparedusingnatural sweeteners

description: ABSTRACT: Owing to the high demand for healthier foods, the food industry has been marketing diet and light yogurts. The present study aimed to sensorially evaluate yogurts prepared using natural sweeteners through a simple centroid mixture design with three repetitions at the central point using the preference map methodology. Different formulations were processed using stevia, xylitol, and sucrose in delimited proportions based on the sweetness of the sweetener. A team of tasters was recruited to survey the sensory attributes of the formulations using the check-all-that-apply (CATA) methodology. A product acceptance analysis was also conducted in which 50 consumers evaluated the formulations using a 9-point hedonic scale. After assessing the acceptance, consumers completed the CATA questionnaire. Internal and external preference maps were built using the obtained results. We found high acceptance means (xylitol:stevia:sugar)for F7 (1.0:0:0), F1 (0.5:0:0), and F2 (0:0.5:0.5), which were characterized by a sweet taste, creamy texture, strawberry flavor, fermented milk flavor, and light pink appearance. Formulations with the lowest scores were F6 (0:1.0:0), F3 (0.33:0.33:0.33), and F4(0.5:0.5:0), which were characterized by a residual and bitter taste, astringent sensation, and inconsistent texture.
DOI: 10.6084/m9.figshare.7020290.v1
title: Influence of Brazilian pine seed flour addition on rheological, chemical and sensory properties of gluten-free rice flour cakes

description: ABSTRACT: Brazilian pine seeds (pinhão) are gluten-free seeds produced by the native pine species named Araucaria angustifolia. In this study, gluten-free cake mixes composed of Brazilian pine seed flour and rice flour were developed. The cake mixes were produced following a Simplex Centroid experimental design, with rice flour and Brazilian pine seed flour contents ranging from 50 to 100% and from 0 to 50%, respectively. Mixes were analyzed for chemical composition, apparent paste viscosity, and particle size distribution. The resulting cakes were analyzed for sensory acceptance, texture, specific volume and chemical composition. The Brazilian pine seed flour showed a peak viscosity on heating of 1.761Pa.s against 4.747Pa.s for the 100% rice flour sample. The variation of firmness of cakes decreased with increasing percentage of Brazilian pine seed flour. Cakes containing Brazilian pine seed flour at 25-37.5% of the formulation presented highest overall acceptance.
DOI: 10.6084/m9.figshare.7020293.v1
title: External preference map to evaluate the acceptance of light and diet yogurt preparedusingnatural sweeteners

description: ABSTRACT: Owing to the high demand for healthier foods, the food industry has been marketing diet and light yogurts. The present study aimed to sensorially evaluate yogurts prepared using natural sweeteners through a simple centroid mixture design with three repetitions at the central point using the preference map methodology. Different formulations were processed using stevia, xylitol, and sucrose in delimited proportions based on the sweetness of the sweetener. A team of tasters was recruited to survey the sensory attributes of the formulations using the check-all-that-apply (CATA) methodology. A product acceptance analysis was also conducted in which 50 consumers evaluated the formulations using a 9-point hedonic scale. After assessing the acceptance, consumers completed the CATA questionnaire. Internal and external preference maps were built using the obtained results. We found high acceptance means (xylitol:stevia:sugar)for F7 (1.0:0:0), F1 (0.5:0:0), and F2 (0:0.5:0.5), which were characterized by a sweet taste, creamy texture, strawberry flavor, fermented milk flavor, and light pink appearance. Formulations with the lowest scores were F6 (0:1.0:0), F3 (0.33:0.33:0.33), and F4(0.5:0.5:0), which were characterized by a residual and bitter taste, astringent sensation, and inconsistent texture.
DOI: 10.6084/m9.figshare.7020266
title: Flora of the canga of the Serra dos Carajás, Pará, Brazil: Malpighiaceae

description: Abstract In this work, we present the floristic treatment of the Malpighiaceae of the canga of the Serra dos Carajás, including taxonomic comments about all species, as well illustrations and photographs. In the study area 14 species belonging to the genera Banisteriopsis (3 spp.), Byrsonima (3 spp.), Coleostachys (1 sp.), Diplopterys (1 sp.), Heteropterys (3 spp.), Niedenzuella (1 sp.), Peixotoa (1 sp.), and Stigmaphyllon (1 sp.) were recorded. Heteropterys trigoniifolia, Niedenzuella acutifolia and Peixotoa reticulata are recorded for the first time in the state of Pará.
DOI: 10.6084/m9.figshare.7020269
title: Biomass of sugar-apple seedlings under saline water irrigation in substrate with polymer

description: ABSTRACT Application of saline water causes water and salt stress, changing the behavior of the plants. The aim of this work was to evaluate the accumulation and allocation of biomass in sugar-apple seedlings under frequencies of irrigation with saline water in a substrate with soil conditioner, as well as the effect of container volume. The treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and electrical conductivity of irrigation water (0.3; 1.1; 2.7; 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and alternated), plus two additional treatments to evaluate container volume (0.75 and 1.30 dm3), distributed in blocks. The evaluations were performed at 120 days after sowing. Irrigation frequency affected the variables, and the highest values were obtained with daily irrigation, except for root/shoot dry matter ratio. Increase in the electrical conductivity of the irrigation water inhibited biomass accumulation. The effect of the container was significant for daily irrigation; higher volume led to higher root, shoot and total biomass. Polymer doses did not affect the biomass of the seedlings. Daily irrigation with non-saline water favored biomass production in sugar-apple seedlings. In the production of sugar-apple seedlings, water with electrical conductivity below 1.0 dS m-1 should be used on a daily frequency of application in 1.30 dm3 containers.
DOI: 10.6084/m9.figshare.7020263
title: POSITION ERRORS IN SOWING IN CURVED AND RECTILINEAR ROUTES USING AUTOPILOT

description: ABSTRACT The use of automatic routing significantly increases the yield and quality of agricultural operations and reduces the overlap rates between the mechanized set passes during the operation. The objective of this study was to analyse the quality of peanut sowing using automatic routing in two paths, curved and rectilinear, based on the error of parallelism and execution error, through statistical process control. The maps used came from an area of peanut seed production, in the city of Luzitânia, São Paulo, Brazil. The sowing was carried out by the execution of a project elaborated in CAD software that, for its elaboration, was taken into consideration the working width of the seeder-fertilizer, as well as the spacing of the crop. The CenterPoint RTX signal was used on both routes. The errors were measured in the Agrocad® program, by means of the orthogonal difference between the lines, and the execution errors were calculated based on the difference between the previously projected lines and the lines executed by the tractor. In general, the sowing operation presented better quality in the rectilinear path, providing smaller parallelism and execution errors. The maximum errors of parallelism were 8.75 and 5.22 cm in the curved and rectilinear path, respectively. The RTX signal ensured good quality of operation in rectilinear path, with low probability of errors occurrence above 3.8 cm.
DOI: 10.6084/m9.figshare.7020269.v1
title: Biomass of sugar-apple seedlings under saline water irrigation in substrate with polymer

description: ABSTRACT Application of saline water causes water and salt stress, changing the behavior of the plants. The aim of this work was to evaluate the accumulation and allocation of biomass in sugar-apple seedlings under frequencies of irrigation with saline water in a substrate with soil conditioner, as well as the effect of container volume. The treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and electrical conductivity of irrigation water (0.3; 1.1; 2.7; 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and alternated), plus two additional treatments to evaluate container volume (0.75 and 1.30 dm3), distributed in blocks. The evaluations were performed at 120 days after sowing. Irrigation frequency affected the variables, and the highest values were obtained with daily irrigation, except for root/shoot dry matter ratio. Increase in the electrical conductivity of the irrigation water inhibited biomass accumulation. The effect of the container was significant for daily irrigation; higher volume led to higher root, shoot and total biomass. Polymer doses did not affect the biomass of the seedlings. Daily irrigation with non-saline water favored biomass production in sugar-apple seedlings. In the production of sugar-apple seedlings, water with electrical conductivity below 1.0 dS m-1 should be used on a daily frequency of application in 1.30 dm3 containers.
DOI: 10.6084/m9.figshare.7020263.v1
title: POSITION ERRORS IN SOWING IN CURVED AND RECTILINEAR ROUTES USING AUTOPILOT

description: ABSTRACT The use of automatic routing significantly increases the yield and quality of agricultural operations and reduces the overlap rates between the mechanized set passes during the operation. The objective of this study was to analyse the quality of peanut sowing using automatic routing in two paths, curved and rectilinear, based on the error of parallelism and execution error, through statistical process control. The maps used came from an area of peanut seed production, in the city of Luzitânia, São Paulo, Brazil. The sowing was carried out by the execution of a project elaborated in CAD software that, for its elaboration, was taken into consideration the working width of the seeder-fertilizer, as well as the spacing of the crop. The CenterPoint RTX signal was used on both routes. The errors were measured in the Agrocad® program, by means of the orthogonal difference between the lines, and the execution errors were calculated based on the difference between the previously projected lines and the lines executed by the tractor. In general, the sowing operation presented better quality in the rectilinear path, providing smaller parallelism and execution errors. The maximum errors of parallelism were 8.75 and 5.22 cm in the curved and rectilinear path, respectively. The RTX signal ensured good quality of operation in rectilinear path, with low probability of errors occurrence above 3.8 cm.
DOI: 10.6084/m9.figshare.7020266.v1
title: Flora of the canga of the Serra dos Carajás, Pará, Brazil: Malpighiaceae

description: Abstract In this work, we present the floristic treatment of the Malpighiaceae of the canga of the Serra dos Carajás, including taxonomic comments about all species, as well illustrations and photographs. In the study area 14 species belonging to the genera Banisteriopsis (3 spp.), Byrsonima (3 spp.), Coleostachys (1 sp.), Diplopterys (1 sp.), Heteropterys (3 spp.), Niedenzuella (1 sp.), Peixotoa (1 sp.), and Stigmaphyllon (1 sp.) were recorded. Heteropterys trigoniifolia, Niedenzuella acutifolia and Peixotoa reticulata are recorded for the first time in the state of Pará.
DOI: 10.6084/m9.figshare.7020257
title: IDENTIFICATION AND QUANTIFICATION OF FACTORS AFFECTING THE OPERATIONAL CAPACITY OF SUGAR CANE HARVESTERS

description: ABSTRACT Several studies determined the theoretical and effective capacity of sugarcane harvesters. However, in field conditions, some variables affect sugarcane production and their effect on machine productivity is difficult to measure. The objective of this study is to analyze the correlation of the operational capacity of sugarcane harvesters with property size, sugarcane yield, total operation time of harvesters, and lost productive time. This correlation will be used to construct models that estimate machine capacity under different working conditions. Harvest data were collected from 41 farms with different sizes and rates of productivity, with the harvesting of 412,207 tons of sugarcane by eight harvesters. Property size was the variable that, in isolation, better represented the operational capacity of harvesters in both mg day−1 and mg h−1, with a positive and strong correlation between these two variables.
DOI: 10.6084/m9.figshare.7020257.v1
title: IDENTIFICATION AND QUANTIFICATION OF FACTORS AFFECTING THE OPERATIONAL CAPACITY OF SUGAR CANE HARVESTERS

description: ABSTRACT Several studies determined the theoretical and effective capacity of sugarcane harvesters. However, in field conditions, some variables affect sugarcane production and their effect on machine productivity is difficult to measure. The objective of this study is to analyze the correlation of the operational capacity of sugarcane harvesters with property size, sugarcane yield, total operation time of harvesters, and lost productive time. This correlation will be used to construct models that estimate machine capacity under different working conditions. Harvest data were collected from 41 farms with different sizes and rates of productivity, with the harvesting of 412,207 tons of sugarcane by eight harvesters. Property size was the variable that, in isolation, better represented the operational capacity of harvesters in both mg day−1 and mg h−1, with a positive and strong correlation between these two variables.
DOI: 10.6084/m9.figshare.7020251
title: A Comparison between different techniques for optimum design of steel frames subjected to blast

description: Abstract According to the conditions of today's world, design of resistant structures against blast loading is an important subject that requires special attention. Thus, given the benefits of optimization in engineering, development and assessment of optimization methods for optimum design of structures against blast is of great importance. In this research, the optimum design of steel frame structures against blast loading is investigated. For this purpose first an optimization methodology is proposed. In the proposed method the structural analysis is performed using nonlinear explicit finite element analysis. Based on the proposed method a framework is developed and three numerical examples are investigated using different numerical optimization techniques. Results of this study show that by using nonlinear explicit FE analysis as the structural analysis method and NLPQLP optimization technique as the optimization method, the current optimization problem can be performed effectively, because the procedure is relatively accurate and computationally inexpensive.
DOI: 10.6084/m9.figshare.7020251.v1
title: A Comparison between different techniques for optimum design of steel frames subjected to blast

description: Abstract According to the conditions of today's world, design of resistant structures against blast loading is an important subject that requires special attention. Thus, given the benefits of optimization in engineering, development and assessment of optimization methods for optimum design of structures against blast is of great importance. In this research, the optimum design of steel frame structures against blast loading is investigated. For this purpose first an optimization methodology is proposed. In the proposed method the structural analysis is performed using nonlinear explicit finite element analysis. Based on the proposed method a framework is developed and three numerical examples are investigated using different numerical optimization techniques. Results of this study show that by using nonlinear explicit FE analysis as the structural analysis method and NLPQLP optimization technique as the optimization method, the current optimization problem can be performed effectively, because the procedure is relatively accurate and computationally inexpensive.
DOI: 10.6084/m9.figshare.7020254
title: A new a posteriori error indicator and its mesh optimization for nonlocal concrete damage models

description: Abstract Damage models are often used in finite element simulations of concrete structures. Evaluating the numerical quality of these computations consists in an important task which can be performed by using an error estimator. However, in the framework of nonlocal approaches these estimators seem to be much less abundant in the literature and their implementation requires considerable efforts. In this paper, a new error indicator with relatively less difficulties for its implementation is proposed. Based on local and least squares smoothing techniques, the convergence analyses of the developed indicator is carried out and discussed. The obtained results seem to be in good agreement with those obtained by the use of residual method. In addition the major difficulty to obtain an automatic step-by-step mesh adaptation is highlighted. Nevertheless for a chosen loading step, optimized calculations can be performed and example tests are presented.