cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6151406.v1
title: Welded Joints' Heat Affected Zone's Extension Prediction by Switching Welding Parameters

description: Choosing welding parameters is an important step in welding process, directly influencing in the heat input provided to welded joints. This heat input value, along with temperature distribution in welded joints, provides, to the drafter, conditions of predicting the Heat Affected Zone (HAZ) extension, the kind of microstructure to be formed, and therefore, the effects of residual stress. Three welding parameters were switched, providing different welding conditions. Each condition was analyzed by SmartWeld 2011 software and macrography to find and compare the extension of HAZ. As for the residual stresses, calculated through Displacement of Coordinated Points (DCP) method. It is possible to choose the best parameters for the welded joint by GMAW process considering the parameters in study.
DOI: 10.6084/m9.figshare.6151403.v1
title: Relevance of Dynamic Strain Aging under Quasi-Static Tension on AISI 304 Stainless Steel

description: The interval of existence of dynamic strain aging (DSA) in AISI type 304 austenitic stainless steel subjected to quasi-static tension tests, under strain rates from 3.5 x 10-2 to 3.5 x 10-4 s-1, in the temperature range from 25 to 800ºC was investigated. It was found that DSA occurs in the range extending from around 200 to 700ºC. Plastic instabilities associated with serrations, Portevin-Chatelier effect, allowed activation energies to be calculated and a possible mechanism of dislocation interaction with interstitial carbon atoms to be proposed. Significant increase in the ultimate strength, uniform elongation and work hardening demonstrate that DSA is a relevant phenomenon, which improves the high temperature mechanical properties of 304 steel.
DOI: 10.6084/m9.figshare.6151400
title: Evaluation of a Thermochromic Liquid Crystal for Use as a Temperature Sensor for Components of Electrical Systems

description: Connectors used in electrical power distribution systems should allow the passage of electricity continuously and without interruption. However, this does not always occur due to failure caused by improper assembly and/or corrosion of the materials employed, which reflects the quality of service. Notable among the new detection technologies that have been studied to facilitate the identification of defects is the use of thermochromic materials, which allow the easy identification of "hot spots", without the need for specialized equipment and personnel. In this context, in this study, the performance of a thermochromic liquid crystal was evaluated with the aim of developing a temperature sensor for connectors used in electrical power distribution networks. For the evaluation of the performance, thermal and ultraviolet radiation degradation tests were conducted, as well as analysis using spectroscopic (FTIR, FTIR-HATR, UV-Vis, 1H NMR) and thermal (DSC, PLM) techniques. The results indicated that the liquid crystal and the associated components showed no degradation under the test conditions, as well as a good color stability was observed, verifying the viability of the use of these materials for the construction of a temperature sensor. A field test was performed with the devices and was effective for the suggested application.
DOI: 10.6084/m9.figshare.6151397
title: Prediction of Topsoil Texture Through Regression Trees and Multiple Linear Regressions

description: ABSTRACT: Users of soil survey products are mostly interested in understanding how soil properties vary in space and time. The aim of digital soil mapping (DSM) is to represent the spatial variability of soil properties quantitatively to support decision-making. The goal of this study is to evaluate DSM techniques (Regression Trees - RT and Multiple Linear Regressions - MLR) and the ability of these tools to predict mineral fraction content under a wide variability of landscapes. The study site was the entire Guapi-Macacu watershed (1,250.78 km2) in the state of Rio de Janeiro in the Southeast region of Brazil. Terrain attributes and remote sensing data (with 30 m of spatial resolution) were used to represent landscape co-variables selected as an input in predictive models in order to develop the explanatory variables. The selection of sampling sites was based on the Latin Hypercube algorithm. A representative set of one hundred points with feasible field access was chosen. Different input databases were tested for prediction of mineral fraction content (harmonized and original data). The Spline algorithm was used to harmonize data according to the GlobalSoil. Net consortium standards. The results showed better performance from the RT models, using input from an average of six covariates; the simplest MLR model used twice as many input variables, creating more complex models without gaining precision. Furthermore, better R2 values were obtained using RT models, irrespective of harmonization of soil data. The harmonized dataset from the 0.00-0.05 and 0.05-0.15 m layers, in general, presented better results for the clay and silt, with R2 values of 0.52 (0.00-0.05 m) and 0.69 (0.05-0.15 m), respectively. Prediction of sand content showed better results when the original depth data was used as an input, although all regression tree models had R2 values greater than 0.52. The RT models provided a better statistical index than MLR for all predicted properties; however, the variance between models suggests similarity of performance. Regarding harmonization of soil data, both input databases (harmonized or not) can be used to predict soil properties, since the variance of model performance was low and generalization of the soil maps showed similar trends. The products obtained from the digital soil mapping approach make it possible to integrate the factor of uncertainties, providing easier interpretation for soil management and land use decisions.
DOI: 10.6084/m9.figshare.6151397.v1
title: Prediction of Topsoil Texture Through Regression Trees and Multiple Linear Regressions

description: ABSTRACT: Users of soil survey products are mostly interested in understanding how soil properties vary in space and time. The aim of digital soil mapping (DSM) is to represent the spatial variability of soil properties quantitatively to support decision-making. The goal of this study is to evaluate DSM techniques (Regression Trees - RT and Multiple Linear Regressions - MLR) and the ability of these tools to predict mineral fraction content under a wide variability of landscapes. The study site was the entire Guapi-Macacu watershed (1,250.78 km2) in the state of Rio de Janeiro in the Southeast region of Brazil. Terrain attributes and remote sensing data (with 30 m of spatial resolution) were used to represent landscape co-variables selected as an input in predictive models in order to develop the explanatory variables. The selection of sampling sites was based on the Latin Hypercube algorithm. A representative set of one hundred points with feasible field access was chosen. Different input databases were tested for prediction of mineral fraction content (harmonized and original data). The Spline algorithm was used to harmonize data according to the GlobalSoil. Net consortium standards. The results showed better performance from the RT models, using input from an average of six covariates; the simplest MLR model used twice as many input variables, creating more complex models without gaining precision. Furthermore, better R2 values were obtained using RT models, irrespective of harmonization of soil data. The harmonized dataset from the 0.00-0.05 and 0.05-0.15 m layers, in general, presented better results for the clay and silt, with R2 values of 0.52 (0.00-0.05 m) and 0.69 (0.05-0.15 m), respectively. Prediction of sand content showed better results when the original depth data was used as an input, although all regression tree models had R2 values greater than 0.52. The RT models provided a better statistical index than MLR for all predicted properties; however, the variance between models suggests similarity of performance. Regarding harmonization of soil data, both input databases (harmonized or not) can be used to predict soil properties, since the variance of model performance was low and generalization of the soil maps showed similar trends. The products obtained from the digital soil mapping approach make it possible to integrate the factor of uncertainties, providing easier interpretation for soil management and land use decisions.
DOI: 10.6084/m9.figshare.6151394
title: Genotypic analysis of secreted aspartyl proteinases in vaginal Candida albicans isolates

description: ABSTRACT Introduction: Candida albicans is the most common etiologic agent of fungal vaginitis. These yeasts produce secreted aspartyl proteinases encoded by a family of 10 genes (SAP1-10). Objective: The purpose of this study was to analyze the presence of genes SAP1-7 in vulvovaginal C. albicans. Materials and method: The study included 26 C. albicans vaginal isolates. Detection of aspartyl proteases genes (SAP1-7) was performed by polymerase chain reaction (PCR). Results: The most frequent gene in C. albicans isolated from colonization was SAP6 (93.33%), and from infection, SAP7 (100%). We observed a statistical difference (p = 0.049) in SAP1 gene frequency between isolates from vulvovaginal colonization and infection. Conclusion: High frequency of SAP genes was observed in vulvovaginal C. albicans. The results suggest SAP1 participation in vulvovaginal candidiasis infection.
DOI: 10.6084/m9.figshare.6151394.v1
title: Genotypic analysis of secreted aspartyl proteinases in vaginal Candida albicans isolates

description: ABSTRACT Introduction: Candida albicans is the most common etiologic agent of fungal vaginitis. These yeasts produce secreted aspartyl proteinases encoded by a family of 10 genes (SAP1-10). Objective: The purpose of this study was to analyze the presence of genes SAP1-7 in vulvovaginal C. albicans. Materials and method: The study included 26 C. albicans vaginal isolates. Detection of aspartyl proteases genes (SAP1-7) was performed by polymerase chain reaction (PCR). Results: The most frequent gene in C. albicans isolated from colonization was SAP6 (93.33%), and from infection, SAP7 (100%). We observed a statistical difference (p = 0.049) in SAP1 gene frequency between isolates from vulvovaginal colonization and infection. Conclusion: High frequency of SAP genes was observed in vulvovaginal C. albicans. The results suggest SAP1 participation in vulvovaginal candidiasis infection.
DOI: 10.6084/m9.figshare.6151391
title: MEANING FOR MENTAL HEALTH CARE: ABOUT THE PSYCHOSOCIAL CARE NETWORK OF UNIFIED HEALTH SYSTEM

description: Abstract Different conceptions of care permeate the health sector playing an important role in the practices adopted in all fields, including mental health. This research sought meaning for mental health care in the Psychosocial Care Network of Brazilian Unified Health System. The study is methodologically of a phenomenological qualitative nature, from the heideggerian hermeneutics referential. The analytical path was also inspired by the reference of Visual Anthropology and its ethnographic approach. The efforts undertaken in this research came up from the selection of 21 photographs that depict different experiences about the care exercised inside some devices of mental health. From these images, the meaning of care exercised in the Psychosocial Care Network devices emerged as still linked to the notion of care based on effective actions and operations considered appropriate only by following protocols, welfare criteria and activities recommended on manuals. The care deemed necessary for the scope of mental health is one that values people, is interested in their feelings and expectations as to what professionals can come to collaborate to meet the needs, reduce people’s suffering and to the reconfiguration of health devices.
DOI: 10.6084/m9.figshare.6151391.v1
title: MEANING FOR MENTAL HEALTH CARE: ABOUT THE PSYCHOSOCIAL CARE NETWORK OF UNIFIED HEALTH SYSTEM

description: Abstract Different conceptions of care permeate the health sector playing an important role in the practices adopted in all fields, including mental health. This research sought meaning for mental health care in the Psychosocial Care Network of Brazilian Unified Health System. The study is methodologically of a phenomenological qualitative nature, from the heideggerian hermeneutics referential. The analytical path was also inspired by the reference of Visual Anthropology and its ethnographic approach. The efforts undertaken in this research came up from the selection of 21 photographs that depict different experiences about the care exercised inside some devices of mental health. From these images, the meaning of care exercised in the Psychosocial Care Network devices emerged as still linked to the notion of care based on effective actions and operations considered appropriate only by following protocols, welfare criteria and activities recommended on manuals. The care deemed necessary for the scope of mental health is one that values people, is interested in their feelings and expectations as to what professionals can come to collaborate to meet the needs, reduce people’s suffering and to the reconfiguration of health devices.
DOI: 10.6084/m9.figshare.6151388
title: Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)

description: Abstract Sisyrinchium is the largest genus of Iridaceae in the Americas and has the greatest amount of cytological data available. This study aimed at investigating how genomes evolved in this genus. Chromosome number, genome size and altitude from species of sect. Viperella were analyzed in a phylogenetic context. Meiotic and pollen analyses were performed to assess reproductive success of natural populations, especially from those polyploid taxa. Character optimizations revealed that the common ancestor of sect. Viperella was probably diploid (2n = 2x =18) with two subsequent polyplodization events. Total DNA content (2C) varied considerably across the phylogeny with larger genomes detected mainly in polyploid species. Altitude also varied across the phylogeny, however no significant relationship was found between DNA content changes and altitude in our data set. All taxa presented regular meiosis and pollen viability (&gt; 87%), except for S. sp. nov. aff. alatum (22.70%), suggesting a recent hybrid origin. Chromosome number is mostly constant within this section and polyploidy is the only source of modification. Although 2C varied considerably among the 20 taxa investigated, the diversity observed cannot be attributed only to polyploidy events because large variations of DNA content were also observed among diploids.
DOI: 10.6084/m9.figshare.6151385
title: Oxytocin and arginine vasopressin systems in the domestication process

description: Abstract Domestication is of unquestionable importance to the technological revolution that has given rise to modern human societies. In this study, we analyzed the DNA and protein sequences of six genes of the oxytocin and arginine vasopressin systems (OXT-OXTR; AVP-AVPR1a, AVPR1b and AVPR2) in 40 placental mammals. These systems play an important role in the control of physiology and behavior. According to our analyses, neutrality does not explain the pattern of molecular evolution found in some of these genes. We observed specific sites under positive selection in AVPR1b (ω = 1.429, p = 0.001) and AVPR2 (ω= 1.49, p = 0.001), suggesting that they could be involved in behavior and physiological changes, including those related to the domestication process. Furthermore, AVPR1a, which plays a role in social behavior, is under relaxed selective constraint in domesticated species. These results provide new insights into the nature of the domestication process and its impact on the OXT-AVP system.
DOI: 10.6084/m9.figshare.6151388.v1
title: Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)

description: Abstract Sisyrinchium is the largest genus of Iridaceae in the Americas and has the greatest amount of cytological data available. This study aimed at investigating how genomes evolved in this genus. Chromosome number, genome size and altitude from species of sect. Viperella were analyzed in a phylogenetic context. Meiotic and pollen analyses were performed to assess reproductive success of natural populations, especially from those polyploid taxa. Character optimizations revealed that the common ancestor of sect. Viperella was probably diploid (2n = 2x =18) with two subsequent polyplodization events. Total DNA content (2C) varied considerably across the phylogeny with larger genomes detected mainly in polyploid species. Altitude also varied across the phylogeny, however no significant relationship was found between DNA content changes and altitude in our data set. All taxa presented regular meiosis and pollen viability (&gt; 87%), except for S. sp. nov. aff. alatum (22.70%), suggesting a recent hybrid origin. Chromosome number is mostly constant within this section and polyploidy is the only source of modification. Although 2C varied considerably among the 20 taxa investigated, the diversity observed cannot be attributed only to polyploidy events because large variations of DNA content were also observed among diploids.
DOI: 10.6084/m9.figshare.6151385.v1
title: Oxytocin and arginine vasopressin systems in the domestication process

description: Abstract Domestication is of unquestionable importance to the technological revolution that has given rise to modern human societies. In this study, we analyzed the DNA and protein sequences of six genes of the oxytocin and arginine vasopressin systems (OXT-OXTR; AVP-AVPR1a, AVPR1b and AVPR2) in 40 placental mammals. These systems play an important role in the control of physiology and behavior. According to our analyses, neutrality does not explain the pattern of molecular evolution found in some of these genes. We observed specific sites under positive selection in AVPR1b (ω = 1.429, p = 0.001) and AVPR2 (ω= 1.49, p = 0.001), suggesting that they could be involved in behavior and physiological changes, including those related to the domestication process. Furthermore, AVPR1a, which plays a role in social behavior, is under relaxed selective constraint in domesticated species. These results provide new insights into the nature of the domestication process and its impact on the OXT-AVP system.
DOI: 10.6084/m9.figshare.6151382
title: Analysis of Ball Soldering Parameters on the Properties of a BGA Packaged Semiconductor

description: Integrated circuits have several applications, including medicine and the aerospace industry, where reliability is essential. Packaging is an important step in the manufacturing of integrated circuits, and ball soldering is one of the most critical process, especially in assembling and interconnecting integrated circuits. The solder joint formed during the ball soldering process is intrinsically associated with the performance and the reliability of the electronic system. This study analyzed the influence of parameters or factors affecting the ball soldering process from the perspective of intermetallic compound formation and shear stress of the solder joint. The results indicate there is an interaction coupling between these two factors that cannot be seen when they are investigated individually, meaning that the individual effect of each factor differs from that of the combinations of factors. The results showed that the factor that most influenced shear stress and thickness of the intermetallic compound was peak temperature during ball soldering.
DOI: 10.6084/m9.figshare.6151382.v1
title: Analysis of Ball Soldering Parameters on the Properties of a BGA Packaged Semiconductor

description: Integrated circuits have several applications, including medicine and the aerospace industry, where reliability is essential. Packaging is an important step in the manufacturing of integrated circuits, and ball soldering is one of the most critical process, especially in assembling and interconnecting integrated circuits. The solder joint formed during the ball soldering process is intrinsically associated with the performance and the reliability of the electronic system. This study analyzed the influence of parameters or factors affecting the ball soldering process from the perspective of intermetallic compound formation and shear stress of the solder joint. The results indicate there is an interaction coupling between these two factors that cannot be seen when they are investigated individually, meaning that the individual effect of each factor differs from that of the combinations of factors. The results showed that the factor that most influenced shear stress and thickness of the intermetallic compound was peak temperature during ball soldering.
DOI: 10.6084/m9.figshare.6151379
title: Human genetics in Brazilian textbooks and genetic determinism

description: Abstract In teaching genetics, addressing human genetics may bring the subject matter closer to students and illustrate that genetic mechanisms are not exclusive to other species. Since textbooks are among the main resources used in schools, the objective of this study is to verify which human characteristics are mentioned in textbooks and how they are addressed, and whether they provide students with an understanding of the complexity of the expression of their characteristics. In this study, we analyze books approved by the National Textbook Program, quantifying the human characteristics cited and categorizing them according to approach. The results show that human characteristics appear less frequently than other examples of inheritance; they are mostly described as single-gene characteristics, and this information is only sparsely related to the influence of the environment on genetic expression, which may provide a deterministic overview of genetics.
DOI: 10.6084/m9.figshare.6151379.v1
title: Human genetics in Brazilian textbooks and genetic determinism

description: Abstract In teaching genetics, addressing human genetics may bring the subject matter closer to students and illustrate that genetic mechanisms are not exclusive to other species. Since textbooks are among the main resources used in schools, the objective of this study is to verify which human characteristics are mentioned in textbooks and how they are addressed, and whether they provide students with an understanding of the complexity of the expression of their characteristics. In this study, we analyze books approved by the National Textbook Program, quantifying the human characteristics cited and categorizing them according to approach. The results show that human characteristics appear less frequently than other examples of inheritance; they are mostly described as single-gene characteristics, and this information is only sparsely related to the influence of the environment on genetic expression, which may provide a deterministic overview of genetics.