cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5671588
title: Design of punching shear for prestressed slabs with unbonded tendons on internal columns

description: ABSTRACT This paper is related to the punching shear in prestressed slabs with unbonded tendons for interior columns calculated by the codes ABNT NBR 6118:2007, ABNT NBR 6118:2014, EN 1992-1-1:2004 e ACI 318-11. To calculate the punching shear resistance the formulations of the NBR 6118:07, effective until April/2014, did not consider the compression of the concrete in the plane of the slab, due to prestressing. Just the inclined components of some tendons were considered for total load applied relief, but this fact did not generate a significant difference, compared to reinforced concrete, because the inclination angle is very close to zero. The American and European provisions consider a portion related to the compression of the concrete in the planeof the slab. Differences in the results obtained by the four design codes will be exposed, showing that the EC2:04 and the NBR6118:14 achieved the best results.
DOI: 10.6084/m9.figshare.5671588.v1
title: Design of punching shear for prestressed slabs with unbonded tendons on internal columns

description: ABSTRACT This paper is related to the punching shear in prestressed slabs with unbonded tendons for interior columns calculated by the codes ABNT NBR 6118:2007, ABNT NBR 6118:2014, EN 1992-1-1:2004 e ACI 318-11. To calculate the punching shear resistance the formulations of the NBR 6118:07, effective until April/2014, did not consider the compression of the concrete in the plane of the slab, due to prestressing. Just the inclined components of some tendons were considered for total load applied relief, but this fact did not generate a significant difference, compared to reinforced concrete, because the inclination angle is very close to zero. The American and European provisions consider a portion related to the compression of the concrete in the planeof the slab. Differences in the results obtained by the four design codes will be exposed, showing that the EC2:04 and the NBR6118:14 achieved the best results.
DOI: 10.6084/m9.figshare.5671582
title: The Transition from Ratios to Trigonometric Functions

description: Abstract Our motivation comes from the difficulties that appeared in the lessons involving trigonometric functions, related to the trigonometric circle and the measure of an angle in radians. The aim was to investigate the contributions of an approach combining constructions with a dynamic software and concrete material. Based on the Meaningful Learning Theory, we chose subsumed concepts related to the definition of the sinus function and applied a set of activities for nine students from a teachers Course in Mathematics, using the Design Based Research. For drawing up the activities, we considered historical development of concepts of trigonometry and recommendations from the Brazilian National Curriculum Standards. Our intervention was not enough for the participants to achieve a significant learning in trigonometry. However, we observed that everyone managed to build a table and a graph of a periodic function, and two participants were able to sketch the graph of the sinus function.
DOI: 10.6084/m9.figshare.5671582.v1
title: The Transition from Ratios to Trigonometric Functions

description: Abstract Our motivation comes from the difficulties that appeared in the lessons involving trigonometric functions, related to the trigonometric circle and the measure of an angle in radians. The aim was to investigate the contributions of an approach combining constructions with a dynamic software and concrete material. Based on the Meaningful Learning Theory, we chose subsumed concepts related to the definition of the sinus function and applied a set of activities for nine students from a teachers Course in Mathematics, using the Design Based Research. For drawing up the activities, we considered historical development of concepts of trigonometry and recommendations from the Brazilian National Curriculum Standards. Our intervention was not enough for the participants to achieve a significant learning in trigonometry. However, we observed that everyone managed to build a table and a graph of a periodic function, and two participants were able to sketch the graph of the sinus function.
DOI: 10.6084/m9.figshare.5671573
title: Selective advantage conferred by resemblance of aposematic mimics to venomous model

description: Abstract Mimicry is an excellent example of how natural selection can act on color, morphology, and behavior of species. Herein we assess predation rates on coral snake mimics in Central Brazil, a region with many mimics but only a single model, to answer the following questions: (i) Do predators avoid attacking coral snake mimics? (ii) Does the degree to which mimics resemble their venomous model affect the frequency of predator attacks? (iii) Do predators attack different body regions in mimics with different color patterns? Our experiment was conducted in the Chapada dos Veadeiros National Park, in the municipality of Alto Paraíso de Goiás, state of Goiás, Brazil. To evaluate predation rates on the different mimic patterns, we made 2,400 clay snake replicas using pre-colored nontoxic plasticine and distributed them in open savanna landscapes within the park. A total of 164 (6.83%) replicas were attacked by predators of snakes. Among these attacks, 121 were attacks by birds, and 43 were attacks by carnivorous mammals. Logistic regression and Fisher’s exact test indicated that replicas with red, white, and black coloration are less likely to be attacked than were grey replicas, and coral snake replicas were attacked more often at the “head” end. Also, the greater the similarity to the pattern of venomous coral snakes, the rarer the attack on the replica. Our study underscores the strong selective force that protects coral snake mimics from predators. Our findings reinforce resemblance to the model as an extremely effective strategy in a complex natural system with only one model and numerous mimics.
DOI: 10.6084/m9.figshare.5671573.v1
title: Selective advantage conferred by resemblance of aposematic mimics to venomous model

description: Abstract Mimicry is an excellent example of how natural selection can act on color, morphology, and behavior of species. Herein we assess predation rates on coral snake mimics in Central Brazil, a region with many mimics but only a single model, to answer the following questions: (i) Do predators avoid attacking coral snake mimics? (ii) Does the degree to which mimics resemble their venomous model affect the frequency of predator attacks? (iii) Do predators attack different body regions in mimics with different color patterns? Our experiment was conducted in the Chapada dos Veadeiros National Park, in the municipality of Alto Paraíso de Goiás, state of Goiás, Brazil. To evaluate predation rates on the different mimic patterns, we made 2,400 clay snake replicas using pre-colored nontoxic plasticine and distributed them in open savanna landscapes within the park. A total of 164 (6.83%) replicas were attacked by predators of snakes. Among these attacks, 121 were attacks by birds, and 43 were attacks by carnivorous mammals. Logistic regression and Fisher’s exact test indicated that replicas with red, white, and black coloration are less likely to be attacked than were grey replicas, and coral snake replicas were attacked more often at the “head” end. Also, the greater the similarity to the pattern of venomous coral snakes, the rarer the attack on the replica. Our study underscores the strong selective force that protects coral snake mimics from predators. Our findings reinforce resemblance to the model as an extremely effective strategy in a complex natural system with only one model and numerous mimics.
DOI: 10.6084/m9.figshare.5671564
title: Water quality modeling at Poti river in Teresina (Piauí, Brazil)

description: ABSTRACT The uncontrolled growth of Piauí’s capital, in Brazil, characterized mainly by the occupation of the banks of the river Poti and the existence of illegal connections of raw sewage in rainwater drainage pipes, has contributed significantly to water pollution in the basin of Parnaíba river (semiarid region of Brazil). This research aims at performing the mathematical modeling of water quality in an area of 36.8 km of the Poti river, based on the QUAL-UFMG platform. The research is presented as the first study involving modeling of water quality in said river. Modeled components were: dissolved oxygen (DO), biochemical oxygen demand (BOD) and thermotolerant coliforms (TC). The results obtained from field measurements indicated nonconformities of the parameter TC with respect to CONAMA Resolution nº 357/2005. The calibration of the decay coefficients for each parameter resulted in mean deviations between measured and modeled data of up to 20% and Nash-Sutcliffe efficiency coefficients higher than 0.75, which indicate that the QUAL-UFMG can be used as a basis for predicting the water quality in rivers of semiarid areas. The calibrated model was also compared to field data obtained from the literature. Finally, model simulations were performed for different flow scenarios (minimum and maximum), with consistent results that can be used for the management of the Piauí state water resources.
DOI: 10.6084/m9.figshare.5671564.v1
title: Water quality modeling at Poti river in Teresina (Piauí, Brazil)

description: ABSTRACT The uncontrolled growth of Piauí’s capital, in Brazil, characterized mainly by the occupation of the banks of the river Poti and the existence of illegal connections of raw sewage in rainwater drainage pipes, has contributed significantly to water pollution in the basin of Parnaíba river (semiarid region of Brazil). This research aims at performing the mathematical modeling of water quality in an area of 36.8 km of the Poti river, based on the QUAL-UFMG platform. The research is presented as the first study involving modeling of water quality in said river. Modeled components were: dissolved oxygen (DO), biochemical oxygen demand (BOD) and thermotolerant coliforms (TC). The results obtained from field measurements indicated nonconformities of the parameter TC with respect to CONAMA Resolution nº 357/2005. The calibration of the decay coefficients for each parameter resulted in mean deviations between measured and modeled data of up to 20% and Nash-Sutcliffe efficiency coefficients higher than 0.75, which indicate that the QUAL-UFMG can be used as a basis for predicting the water quality in rivers of semiarid areas. The calibrated model was also compared to field data obtained from the literature. Finally, model simulations were performed for different flow scenarios (minimum and maximum), with consistent results that can be used for the management of the Piauí state water resources.
DOI: 10.6084/m9.figshare.5671561
title: Energy evaluation of an integrated water supply system

description: ABSTRACT The energy burdens of the Feira de Santana Integrated Water Supply System (SIAA-FSA) were analyzed using the life cycle assessment method. The higher energy burdens in the water supply chain were identified and scenarios for improvement were proposed. The supply chain of chemicals, transportation, electricity and replacement of pipes were considered for SIAA-FSA. The cumulative energy demand of SIAA-FSA was 3.51 kWh.m-3 of consumed water. The water uptake and distribution steps presented the highest energy demands, and the electricity for pumping represented 86% of the cumulative energy demand. The SIAA-FSA proposed scenarios showed significant improvements over the current one, with rational use of chemicals, electricity and water.
DOI: 10.6084/m9.figshare.5671561.v1
title: Energy evaluation of an integrated water supply system

description: ABSTRACT The energy burdens of the Feira de Santana Integrated Water Supply System (SIAA-FSA) were analyzed using the life cycle assessment method. The higher energy burdens in the water supply chain were identified and scenarios for improvement were proposed. The supply chain of chemicals, transportation, electricity and replacement of pipes were considered for SIAA-FSA. The cumulative energy demand of SIAA-FSA was 3.51 kWh.m-3 of consumed water. The water uptake and distribution steps presented the highest energy demands, and the electricity for pumping represented 86% of the cumulative energy demand. The SIAA-FSA proposed scenarios showed significant improvements over the current one, with rational use of chemicals, electricity and water.
DOI: 10.6084/m9.figshare.5671555
title: Evaluation of the domestic wastewater treatment efficiency by micronucleus test on Oreochromis niloticus (Cichlidae)

description: ABSTRACT This study aimed at evaluating the efficiency in the domestic wastewater treatment from a city of Sao Paulo State (Brazil), by micronuclei and nuclear abnormalities analysis in erythrocytes of tilapias exposed to raw and treated wastewater. Two samples were collected. Three aquariums of 20 L, with five fish each, were used in the bioassays. In the first, the animals were exposed to the artesian water (negative control); in the second, to the diluted raw wastewater; and in the third, to after wastewater treatment. After the exposure time (72 h), the blood was collected for preparing the smear slides. The results showed genotoxic and mutagenic effects of the raw wastewater in both samples, showing that the process used was efficient to minimize these effects.
DOI: 10.6084/m9.figshare.5671555.v1
title: Evaluation of the domestic wastewater treatment efficiency by micronucleus test on Oreochromis niloticus (Cichlidae)

description: ABSTRACT This study aimed at evaluating the efficiency in the domestic wastewater treatment from a city of Sao Paulo State (Brazil), by micronuclei and nuclear abnormalities analysis in erythrocytes of tilapias exposed to raw and treated wastewater. Two samples were collected. Three aquariums of 20 L, with five fish each, were used in the bioassays. In the first, the animals were exposed to the artesian water (negative control); in the second, to the diluted raw wastewater; and in the third, to after wastewater treatment. After the exposure time (72 h), the blood was collected for preparing the smear slides. The results showed genotoxic and mutagenic effects of the raw wastewater in both samples, showing that the process used was efficient to minimize these effects.
DOI: 10.6084/m9.figshare.5671552
title: Sa-table 4.1.xlsx

description: Table 4.1<br>
DOI: 10.6084/m9.figshare.5671546
title: Cultivating plants and Waorani society

description: Abstract Agricultural practices produce information that reveals the relationship between people and the environment. This study describes and analyzes the agricultural itinerary of the Waorani people of the Ecuadorian Amazon, through which major sociocultural characteristics are materialized: individual freedom and personal autonomy. During fifteen months of fieldwork in two Waorani villages, participant observation and field walks were undertaken to identify cultivated plants. With the collected information, socio-cultural and environmental aspects of slash-and-mulch were established. The practice of this agricultural system is not common in other parts of the world, it is relatively unknown and is undervalued because of its yield. This article presents a case study of slash-and-mulch agriculture as part of the Waorani cultural world view, agricultural practices and representations, which persist despite contact with other types of agriculture. The continuation of these agricultural practices can be explained by the very conceptualization the Waorani people have regarding the dynamics of transforming natural resources.
DOI: 10.6084/m9.figshare.5671540
title: A Scenario about Research on Statistics Education in the Mathematics Education Bulletin – BOLEMA, from 2006 to 2015

description: Abstract This article aims to identify the thematic focus and theoretical-methodological characteristics about papers published in the Mathematics Education Bulletin - BOLEMA on Statistics Education. In this sense, a survey of the “state of knowledge”-type was developed in the online editions available on the periodic website, 2006-2015. We found 40 works, including articles, thesis abstracts, and dissertation abstracts. Through this investigation it was possible to identify key institutions and researchers investigating in this field, publishing part of their research in this vehicle of scientific publication in the country. The categorization of the work revealed how the thematic focus with the highest numbers of submissions was “Statistics and Probability Education through features or proposals.” There was also a thematic focus on “Teacher Training”, the “Understanding and reflection on the area of Statistics Education”, and “Difficulties on Statistics and Probability content”, thus, constituting the panorama of research on Statistics Education published in BOLEMA in recent ten years.
DOI: 10.6084/m9.figshare.5671540.v1
title: A Scenario about Research on Statistics Education in the Mathematics Education Bulletin – BOLEMA, from 2006 to 2015

description: Abstract This article aims to identify the thematic focus and theoretical-methodological characteristics about papers published in the Mathematics Education Bulletin - BOLEMA on Statistics Education. In this sense, a survey of the “state of knowledge”-type was developed in the online editions available on the periodic website, 2006-2015. We found 40 works, including articles, thesis abstracts, and dissertation abstracts. Through this investigation it was possible to identify key institutions and researchers investigating in this field, publishing part of their research in this vehicle of scientific publication in the country. The categorization of the work revealed how the thematic focus with the highest numbers of submissions was “Statistics and Probability Education through features or proposals.” There was also a thematic focus on “Teacher Training”, the “Understanding and reflection on the area of Statistics Education”, and “Difficulties on Statistics and Probability content”, thus, constituting the panorama of research on Statistics Education published in BOLEMA in recent ten years.
DOI: 10.6084/m9.figshare.5671537
title: Social instigation and repeated aggressive confrontations in male Swiss mice: analysis of plasma corticosterone, CRF and BDNF levels in limbic brain areas

description: Abstract Introduction: Agonistic behaviors help to ensure survival, provide advantage in competition, and communicate social status. The resident-intruder paradigm, an animal model based on male intraspecific confrontations, can be an ethologically relevant tool to investigate the neurobiology of aggressive behavior. Objectives: To examine behavioral and neurobiological mechanisms of aggressive behavior in male Swiss mice exposed to repeated confrontations in the resident intruder paradigm. Methods: Behavioral analysis was performed in association with measurements of plasma corticosterone of mice repeatedly exposed to a potential rival nearby, but inaccessible (social instigation), or to 10 sessions of social instigation followed by direct aggressive encounters. Moreover, corticotropin-releasing factor (CRF) and brain-derived neurotrophic factor (BNDF) were measured in the brain of these animals. Control mice were exposed to neither social instigation nor aggressive confrontations. Results: Mice exposed to aggressive confrontations exhibited a similar pattern of species-typical aggressive and non-aggressive behaviors on the first and the last session. Moreover, in contrast to social instigation only, repeated aggressive confrontations promoted an increase in plasma corticosterone. After 10 aggressive confrontation sessions, mice presented a non-significant trend toward reducing hippocampal levels of CRF, which inversely correlated with plasma corticosterone levels. Conversely, repeated sessions of social instigation or aggressive confrontation did not alter BDNF concentrations at the prefrontal cortex and hippocampus. Conclusion: Exposure to repeated episodes of aggressive encounters did not promote habituation over time. Additionally, CRF seems to be involved in physiological responses to social stressors.
DOI: 10.6084/m9.figshare.5671537.v1
title: Social instigation and repeated aggressive confrontations in male Swiss mice: analysis of plasma corticosterone, CRF and BDNF levels in limbic brain areas

description: Abstract Introduction: Agonistic behaviors help to ensure survival, provide advantage in competition, and communicate social status. The resident-intruder paradigm, an animal model based on male intraspecific confrontations, can be an ethologically relevant tool to investigate the neurobiology of aggressive behavior. Objectives: To examine behavioral and neurobiological mechanisms of aggressive behavior in male Swiss mice exposed to repeated confrontations in the resident intruder paradigm. Methods: Behavioral analysis was performed in association with measurements of plasma corticosterone of mice repeatedly exposed to a potential rival nearby, but inaccessible (social instigation), or to 10 sessions of social instigation followed by direct aggressive encounters. Moreover, corticotropin-releasing factor (CRF) and brain-derived neurotrophic factor (BNDF) were measured in the brain of these animals. Control mice were exposed to neither social instigation nor aggressive confrontations. Results: Mice exposed to aggressive confrontations exhibited a similar pattern of species-typical aggressive and non-aggressive behaviors on the first and the last session. Moreover, in contrast to social instigation only, repeated aggressive confrontations promoted an increase in plasma corticosterone. After 10 aggressive confrontation sessions, mice presented a non-significant trend toward reducing hippocampal levels of CRF, which inversely correlated with plasma corticosterone levels. Conversely, repeated sessions of social instigation or aggressive confrontation did not alter BDNF concentrations at the prefrontal cortex and hippocampus. Conclusion: Exposure to repeated episodes of aggressive encounters did not promote habituation over time. Additionally, CRF seems to be involved in physiological responses to social stressors.
DOI: 10.6084/m9.figshare.5671528
title: The legacy of Cabanis: a hypothesis on the roots of medical education in Brazil

description: Georges Cabanis was a reformer of clinical practice and medical education who laid the conceptual foundations during the French Revolution for the development of education in France over the course of the 19th century. The model, in turn, marked the organization of educational systems in many Latin American countries. The objective of this article is to present and justify a hypothesis: the model of medical education still hegemonic in Brazil is still based upon the Cabanisian reform, holding a linear and Cartesian conceptual perspective, with a discipline-based curriculum, traditional teaching formats, and submission to corporate professional logic. In order to better understand the social and political context of the historical processes that generated this anachronism, I begin with a summary of the biography and thinking of Georges Cabanis, introducing him as a central character in his historical context. Next, I highlight the main structural elements in the Cabanis model, with a special focus on medical teaching, drawing on some of his writings as the documental source. Finally, in broad strokes, I present the project for reform of medical teaching elaborated by Cabanis and his collaborators as backing for a preliminary evaluation of the proposed hypothesis.