cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11313740.v1
title: Algebraic Balance Invariants present in the strategies of third grade of elementary school students

description: Abstract In several countries, there have been recurrent reports of difficulties in understanding of algebraic concepts. The solution to this problem, proposed by much of the mathematical educators' community around the world, was to promote the introduction of algebraic concepts since the early school years. The aim of this work was to describe and analyze the operational invariants used by third grade students elementary school in situations involving the notion of algebraic balance. The methodology of data production and data analysis used was the handling-formalization clinical method. The subjects were 24 third grade students of elementary school, which were submitted to an activity involving four weights and two scales. The participants should balance the weights twoby-two, without knowing the extent of one of the unknown weights the algebraic problem. Clinical interviews were held with all participants to investigate the operational invariants used by them to solve the problem. The theoretical research framework is the theory of conceptual fields. It was noted the possibility of using four operational invariants: the theorems-in-action "complete the missing amount" and "find the unknown from the balance"; and related concepts-in-action "sequence without numbers that repeat" and "balance weights on the scale". The knowledge of how the child develops the initial algebraic balance notion, which is the beginning of the process of understanding the formal equation concept, can help early years teachers to create activities that stimulate the development of this algebraic ability.
DOI: 10.6084/m9.figshare.11313743.v1
title: Physiological responses of soybean (Glycine max (L.) Merrill) cultivars to copper excess

description: Abstract Abstract: Successive applications of copper fungicides on vines have resulted in increased copper content in vineyard soils over the years. This high copper content has affected the growth of young vines in eradicated vineyards. Thus, the cultivation of annual species for a few years is an alternative to copper phytostabilization, because it would be a good way to decrease copper availability to plants. The aim of this study was to evaluate the physiological responses of different soybean cultivars to copper concentration increase. Four different soybean cultivars were grown under three copper concentrations: 0.5, 20 and 40 μM in nutrient solution. The main outcomes of this study were: i) Cultivar M 6410 IPRO recorded the highest photosynthetic rate when plants were exposed to 40 μM of copper in the nutrient solution; ii) plants in cultivar M 6410 IPRO accumulated large copper concentrations in their roots although did not decrease the root dry mass, possibly due to the higher superoxide dismutase activity; iii) cultivar DM 5958 RSF IPRO recorded drastically reduced photosynthetic rate and dry mass production due to copper excess. We conclude that each cultivar responded differently to the excess of copper, but none of them showed tolerance to it.
DOI: 10.6084/m9.figshare.11313725
title: Healthcare trajectories and obstacles faced by women in a health region in Northeast Brazil

description: Abstract: The article aims to assess organization and access to the Healthcare Network in a health region, from the perspective of female users. Healthcare trajectories were constructed for women with high-grade cervical squamous intraepithelial lesions, covered by different modalities of primary health care (PHC) in urban and rural areas, in municipalities in the interior, and in the capital city of the Northeast health region, Brazil. Women used PHC as their regular service for prevention and care, but reported barriers to access to medical appointments, especially in rural areas. Positive assessments were associated with positive reception by the health service and representation of the basic health unit or family health unit as the available locus for care. A perception of low case-resolution capacity in PHC was associated with delays in scheduling referrals, irregular/insufficient supply of medicines, and physician turnover. Women reported difficulty in access to specialized care, especially in municipalities in the interior, with the use of public and private services. All the users in the capital city of the health region underwent confirmatory diagnostic tests and surgeries in the Brazilian Unified National Health System (SUS). Support from family members, friends, and local politicians were part of the healthcare trajectories. Interprofessional communication was nearly non-existent and health professional-patient communication was precarious. The regionalized network appeared disconnected and with confusing flows in terms of guaranteeing timely access for users in municipalities in the interior and with additional difficulties for those in rural areas, even in the capital city, revealing incompleteness in regional arrangements and persistence of inter- and intra-municipal inequalities in access.
DOI: 10.6084/m9.figshare.11313731
title: Accessibility to public spaces for leisure and physical activity in adults in Curitiba, Paraná State, Brazil

description: Abstract: The study aimed to analyze the association between accessibility to public spaces for leisure activities, availability of equipment for physical exercise in these spaces, and leisure-time physical activity (PA) in adults. A household survey was conducted with 699 adults from 32 census tracts selected according to income and “walkability”. Accessibility to public spaces for leisure activities was determined by geoprocessing according to proximity to public spaces for leisure activities and the amount of such spaces within radiuses of 500 and 1,000 meters around the participants’ homes. Presence of equipment for physical exercise in these public spaces was assessed by the observation method and classified as: (a) without equipment for physical exercise; (b) with equipment for physical exercise; (c) equipment for physical exercise for adults; and (d) with three or more pieces of equipment for physical exercise. PA was self-reported, and walking was analyzed separately from moderate-vigorous PA, classified in two levels (≥ 10 minutes/week and ≥ 150 minutes/week). The amount of public spaces for leisure activities in a 500-meter radius with one or more pieces of equipment for physical exercise was negatively associated with walking (OR = 0.84, based on ≥ 150 minutes/week). The amount of public spaces for leisure activities in a 1,000-meter radius was positively associated with moderate-vigorous PA (OR = 1.03). The distance to a public space for leisure activities with three or more pieces of equipment for physical exercise (OR = 0.95) was inversely associated with moderate-vigorous PA. Proximity and amount of public spaces for leisure activities are associated with higher levels of moderate-vigorous PA in adults. The combination of methods can help reveal the contribution that access to (and quality of) public spaces for leisure activities can make to PA.
DOI: 10.6084/m9.figshare.11313722
title: Bradycardic and Antiarrhythmic Effects of the D-Limonene in Rats

description: Abstract Background: D-limonene (DL) is a monoterpene and is the major component in the essential oil of citrus fruit. It presents antihyperglycemic and vasodilatation activities. Objectives: This study evaluated the cardiovascular effects and potential antiarrhythmic of DL in rats. Methods: Hemodynamic and electrocardiographic (ECG) parameters were measured in male Wistar rats, which under anesthesia had been cannulated in the abdominal aorta and lower vena cava and had electrodes subcutaneously implanted. In the in vitro approach, the heart was removed and perfused using the Langendorff technique. The significance level adopted was 5% (p &lt; 0.05). Results: DL, in doses of 10, 20, and 40 mg/kg (i.v), produced intense and persistent bradycardia associated with hypotension. Bradycardia with prolonged QTc was observed in the ECG in vivo recording. In the in vivo model of arrhythmia induced by Bay K8644, DL (10 mg/kg) decreased the arrhythmia score from 15.33 ± 3.52 to 4.0 ± 2.64 u.a (p &lt; 0.05, n = 4). In isolated perfused hearts, DL (10-3 M) promoted significant reductions in heart rate (from 228.6 ± 8.5 ms to 196.0 ± 9.3 bpm; p &lt; 0.05) and left ventricular development pressure (from 25.2 ± 3.4 to 5.9 ± 1.8 mmHg; n = 5, p &lt; 0.05). Conclusions: DL produces bradycardia and antiarrhythmic activity in rat heart.
DOI: 10.6084/m9.figshare.11313728
title: Male homicides in two regions of Brazil: analysis of the effect of age, period, and cohort

description: The objective was to assess the effect of age, period, and birth cohort on the time trend in mortality from homicides in men in the states of the Northeast and Southeast regions of Brazil from 1980 to 2014. This was an ecological time trend study. PCA models were estimated using estimable functions in inference of the parameters. Mortality and population data were obtained from the Brazilian Health Informatics Department. State-by-state mortality rates from homicide were standardized by the direct method, with the world population as the standard, as proposed by the World Health Organization. The Northeast region recorded 317,711 deaths from homicides and the Southeast 544,640 deaths, corresponding, respectively, corresponding to mean standardized rates of 58.68 and 64.68 deaths per 100,000 men. The highest mean standardized mortality rates were observed in the states of Alagoas (157.74 deaths) and Pernambuco (109.58 deaths). All the states showed an increase in mortality up to the third decade of life, with a progressive reduction in the other age brackets. There was an upward trend in all the states of the Northeast and in Minas Gerais and Espírito Santo in the Southeast, while in the other states there was a downward trend. All the states showed an increase in the risk of death in the younger age brackets, except for the state of São Paulo, which showed the inverse profile. The current study’s findings may correlate with the process of discontinuity in the cohort, in which members of wide cohorts found less opportunity for access to employment, income, and education, thus increasing the risk of involvement in crime and death from homicide.
DOI: 10.6084/m9.figshare.11313734.v1
title: First record of growth rings for 11 native subtropical anuran species of South America

description: Abstract: Skeletochronology is the most accurate method to estimate a population age structure. The methodology is based on the analysis of secondary bone tissue in order to count growth rings. This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of growth rings in 11 native species (representing nine families) of a subtropical region of southern Brazil. Four bone samples of each specimen were used to perform the skeletochronological analysis: the penultimate phalanges of the 3rd and 4th fingers, the humerus, and the femur. The presence of growth rings was confirmed in the periosteal layer of the bones of all analyzed species. In comparison with phalanges, growth rings of humeri and femora are more irregular and less distinguishable. This is the first record of growth rings to the native species herein analised. The skeletochronology was proved to be an effective tool in determining the age of anuran amphibians from a subtropical region, since this environment presents well defined climatic seasonality.
DOI: 10.6084/m9.figshare.11313725.v1
title: Healthcare trajectories and obstacles faced by women in a health region in Northeast Brazil

description: Abstract: The article aims to assess organization and access to the Healthcare Network in a health region, from the perspective of female users. Healthcare trajectories were constructed for women with high-grade cervical squamous intraepithelial lesions, covered by different modalities of primary health care (PHC) in urban and rural areas, in municipalities in the interior, and in the capital city of the Northeast health region, Brazil. Women used PHC as their regular service for prevention and care, but reported barriers to access to medical appointments, especially in rural areas. Positive assessments were associated with positive reception by the health service and representation of the basic health unit or family health unit as the available locus for care. A perception of low case-resolution capacity in PHC was associated with delays in scheduling referrals, irregular/insufficient supply of medicines, and physician turnover. Women reported difficulty in access to specialized care, especially in municipalities in the interior, with the use of public and private services. All the users in the capital city of the health region underwent confirmatory diagnostic tests and surgeries in the Brazilian Unified National Health System (SUS). Support from family members, friends, and local politicians were part of the healthcare trajectories. Interprofessional communication was nearly non-existent and health professional-patient communication was precarious. The regionalized network appeared disconnected and with confusing flows in terms of guaranteeing timely access for users in municipalities in the interior and with additional difficulties for those in rural areas, even in the capital city, revealing incompleteness in regional arrangements and persistence of inter- and intra-municipal inequalities in access.
DOI: 10.6084/m9.figshare.11313728.v1
title: Male homicides in two regions of Brazil: analysis of the effect of age, period, and cohort

description: The objective was to assess the effect of age, period, and birth cohort on the time trend in mortality from homicides in men in the states of the Northeast and Southeast regions of Brazil from 1980 to 2014. This was an ecological time trend study. PCA models were estimated using estimable functions in inference of the parameters. Mortality and population data were obtained from the Brazilian Health Informatics Department. State-by-state mortality rates from homicide were standardized by the direct method, with the world population as the standard, as proposed by the World Health Organization. The Northeast region recorded 317,711 deaths from homicides and the Southeast 544,640 deaths, corresponding, respectively, corresponding to mean standardized rates of 58.68 and 64.68 deaths per 100,000 men. The highest mean standardized mortality rates were observed in the states of Alagoas (157.74 deaths) and Pernambuco (109.58 deaths). All the states showed an increase in mortality up to the third decade of life, with a progressive reduction in the other age brackets. There was an upward trend in all the states of the Northeast and in Minas Gerais and Espírito Santo in the Southeast, while in the other states there was a downward trend. All the states showed an increase in the risk of death in the younger age brackets, except for the state of São Paulo, which showed the inverse profile. The current study’s findings may correlate with the process of discontinuity in the cohort, in which members of wide cohorts found less opportunity for access to employment, income, and education, thus increasing the risk of involvement in crime and death from homicide.
DOI: 10.6084/m9.figshare.11313716
title: Association of violence in schools’ vicinity and smoking in schools’ premises with tobacco use among Brazilian adolescents

description: Abstract: This study aims to quantify the overall importance of schools in explaining the individual variance of tobacco use and to test the association between characteristics of the school environment and its vicinity with the experimentation and current use of cigarettes. We analyzed data from 102,072 Brazilian adolescents interviewed in the 2015 National School Health Survey (PeNSE). Multilevel logistic regression models were performed to estimate the between-schools variance and to test the association between school-level variables and the use of tobacco. Violence in the vicinity of the school and presence of teachers or students smoking on school premises were the school-level characteristics. The analyses were adjusted by individual covariates and stratified by gender. Around 12.5% of the individual variance in ever smoking was explained by between-school variation among girls (9.2% among boys). The figures were even higher for current smoking (14.9% girls; 12.2% boys) and current use of other tobacco products (27.7% girls; 17.8% boys). In general, the use of tobacco was associated with the existence of violence in the vicinity of the schools and was higher among students whose schools reported that students and teachers (teachers only for use of other tobacco products among girls) smoke on school premises. Tobacco use on school premises and the safety of the neighborhood where the school is located are associated with some smoking behaviors among adolescents. Such findings reinforce the necessity to effectively consider interventions in the school environment and neighborhood to fight smoking among adolescents.
DOI: 10.6084/m9.figshare.11313719
title: Result of a strategy using reminders before and after date of vaccination to improve timeliness of vaccination at six month

description: Abstract: The impact of immunization depends on timely application of the vaccines, especially relevant in children. Successful strategies for improving timeliness include the use of nominalized records and follow-up mechanisms. This study assessed the result of reminders before and after the scheduled date of vaccination to improve timely vaccination at six months. A before-and-after intervention study was performed with a time series and comparator group with 1,856 children from Villa María, Córdoba, Argentina. The strategy was implemented in the city’s public services and consisted of preparing weekly vaccination schedules, performing follow-up, and contacting and/or making active searches for no-show cases. Assessment of the result used the percentage of timely vaccination with the third dose of the pentavalent vaccine. Time series were built for each group, before and after, and were analyzed with a simple linear model. Means of the percentages were calculated with their confidence intervals, using bootstrap, and compared with the permutation method. In the intervention group, the mean percentage of timely vaccination increased significantly by 2.6 times, reaching 61.7% (56.2; 78.1). No significant increase occurred in the comparator group: p = 0.1101. The mean rates were similar before the implementation. Timely vaccination improved in children receiving the intervention. The results indicate that the proposed strategy to use nominalized records can reduce the delay in application of vaccines.
DOI: 10.6084/m9.figshare.11313722.v1
title: Bradycardic and Antiarrhythmic Effects of the D-Limonene in Rats

description: Abstract Background: D-limonene (DL) is a monoterpene and is the major component in the essential oil of citrus fruit. It presents antihyperglycemic and vasodilatation activities. Objectives: This study evaluated the cardiovascular effects and potential antiarrhythmic of DL in rats. Methods: Hemodynamic and electrocardiographic (ECG) parameters were measured in male Wistar rats, which under anesthesia had been cannulated in the abdominal aorta and lower vena cava and had electrodes subcutaneously implanted. In the in vitro approach, the heart was removed and perfused using the Langendorff technique. The significance level adopted was 5% (p &lt; 0.05). Results: DL, in doses of 10, 20, and 40 mg/kg (i.v), produced intense and persistent bradycardia associated with hypotension. Bradycardia with prolonged QTc was observed in the ECG in vivo recording. In the in vivo model of arrhythmia induced by Bay K8644, DL (10 mg/kg) decreased the arrhythmia score from 15.33 ± 3.52 to 4.0 ± 2.64 u.a (p &lt; 0.05, n = 4). In isolated perfused hearts, DL (10-3 M) promoted significant reductions in heart rate (from 228.6 ± 8.5 ms to 196.0 ± 9.3 bpm; p &lt; 0.05) and left ventricular development pressure (from 25.2 ± 3.4 to 5.9 ± 1.8 mmHg; n = 5, p &lt; 0.05). Conclusions: DL produces bradycardia and antiarrhythmic activity in rat heart.
DOI: 10.6084/m9.figshare.11313731.v1
title: Accessibility to public spaces for leisure and physical activity in adults in Curitiba, Paraná State, Brazil

description: Abstract: The study aimed to analyze the association between accessibility to public spaces for leisure activities, availability of equipment for physical exercise in these spaces, and leisure-time physical activity (PA) in adults. A household survey was conducted with 699 adults from 32 census tracts selected according to income and “walkability”. Accessibility to public spaces for leisure activities was determined by geoprocessing according to proximity to public spaces for leisure activities and the amount of such spaces within radiuses of 500 and 1,000 meters around the participants’ homes. Presence of equipment for physical exercise in these public spaces was assessed by the observation method and classified as: (a) without equipment for physical exercise; (b) with equipment for physical exercise; (c) equipment for physical exercise for adults; and (d) with three or more pieces of equipment for physical exercise. PA was self-reported, and walking was analyzed separately from moderate-vigorous PA, classified in two levels (≥ 10 minutes/week and ≥ 150 minutes/week). The amount of public spaces for leisure activities in a 500-meter radius with one or more pieces of equipment for physical exercise was negatively associated with walking (OR = 0.84, based on ≥ 150 minutes/week). The amount of public spaces for leisure activities in a 1,000-meter radius was positively associated with moderate-vigorous PA (OR = 1.03). The distance to a public space for leisure activities with three or more pieces of equipment for physical exercise (OR = 0.95) was inversely associated with moderate-vigorous PA. Proximity and amount of public spaces for leisure activities are associated with higher levels of moderate-vigorous PA in adults. The combination of methods can help reveal the contribution that access to (and quality of) public spaces for leisure activities can make to PA.
DOI: 10.6084/m9.figshare.11313710
title: The effect of cooking methods on some quality characteristics of gluteus medius

description: Abstract In this research, the effects of cooking by convection oven and cooking by sous-vide method on the physicochemical, textural, sensorial and microbiological of gluteus medius cuts were investigated. For the sous-vide method, the meat was vacuumed sealed in special packaging material (Mylar®Cook) before being stored at + 1 °C for 0, 15, and 30 days. The samples cooked with the sous-vide method had higher moisture content (P &lt; 0.001) and lower cooking loss than oven roasted samples. TBARS content was affected by cooking method (P &lt; 0.01) and storage time ( P &lt; 0.01). The 2-thiobarbituric acid reactive substances (TBARS) values of the convection oven samples were higher than those cooked with sous-vide method. The WBSF values were affected by the cooking methods. The samples cooking with oven significantly lower shear (P &lt; 0.0001) force values than those for the sous-vide method. Samples cooked by the convection oven had higher L* (lightness), a* (redness), b* (yellowness) than the cooked with sous-vide method (P &lt; 0.0001). The sliced meat samples cooked by oven were given higher sensory ratings than those cooked by sous-vide except texture scores.