cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11609697
title: CHARACTERISTICS OF PHYSICAL ACTIVITY AMONG HEALTHY SERBIAN ADOLESCENTS

description: ABSTRACT Introduction: Physical activity (PA) remains the most important modifiable risk factor in the prevention of chronic diseases that are major killers in the modern era. However, many young people today do not meet the recommended guidelines on PA. Few studies were found on the levels of physical activity among adolescents from transitional countries. Objective: To determine the levels of physical activity in a representative sample of healthy adolescents from Pančevo (Serbia), and the factors that determine these level. Methods: This cross-sectional study included 401 randomly selected adolescents (191 boys and 210 girls) from the city of Pančevo, Serbia. The long version of the International Physical Activity Questionnaire (IPAQ), validated for Serbia, was applied. PA was expressed as metabolic equivalent-minute per week (MET-min/week) and classified as low, moderate, or high. Results: The median PA for the whole sample was 2049.18 MET-min/week. The average PA score in boys was higher (2680 MET-min/week) than in girls (1479 MET-min/week). The prevalence of respondents with inadequate PA was 53.9%, and was higher in girls than in boys. Boys showed the higher values for intense and moderate PA, while the prevalent type of PA among girls was walking. Level of PA did not depend on the adolescent's nutritional status. The most important predictors of PA among the participants were sex, father's PA, and hours spent on sedentary activities like using a computer and watching television. Conclusion: Adolescents in Pančevo do not practice enough physical activity, especially girls. Better strategies are needed, to increase levels of PA, considering the main predictors in the adolescent population. Level of Evidence II; Retrospective study.
DOI: 10.6084/m9.figshare.11609691
title: Profile of Complementary Activities of Last-Year Medical Students at the State University of Feira de Santana, 2009-2017

description: ABSTRACT Complementary Activities aim at enriching the teaching-learning process, favoring the complementation of social and professional formation, being carried out through academic-scientific-cultural activities, of which objective is to improve the academic training. This article aims to characterize the profile of the complementary activities carried out by last-year medical students from Feira de Santana State University (UEFS), from 2009 to 2017. This was a cross-sectional, retrospective and descriptive study. Data collection was carried out by reviewing the data contained in the opinions of the course collegiate and certificates delivered by the students. Subsequently, the data were processed using the software Statistical Package for the Social Sciences (SPSS), version 20.0 for Windows, and presented as charts and tables, with subsequent descriptive analysis of the variables of interest. The sample consisted of 171 students, with a predominance of females (56,1%); most of the activities performed by the students took place as participation in scientific events (51,6%); it was observed that cultural and sports activities are not used by the collegiate. The most sought after extracurricular trainings were in the urgency and emergency area (38.5 %); there was an average of 0.93 articles published per student, with Pediatrics being the area with the highest number of publications (24,8%). Moreover, there was a great disparity between the students’ course load and the hours utilized by the course collegiate, with losses of 74% in the extracurricular training activities and 63% in monitoring + scientific initiation + extension activities. The results of this study point to the need to discuss and revise the Complementary Activities Regulations of the UEFS medical course, and may contribute to medical education, for discussing a topic disregarded by most undergraduate medical courses.
DOI: 10.6084/m9.figshare.11609697.v1
title: CHARACTERISTICS OF PHYSICAL ACTIVITY AMONG HEALTHY SERBIAN ADOLESCENTS

description: ABSTRACT Introduction: Physical activity (PA) remains the most important modifiable risk factor in the prevention of chronic diseases that are major killers in the modern era. However, many young people today do not meet the recommended guidelines on PA. Few studies were found on the levels of physical activity among adolescents from transitional countries. Objective: To determine the levels of physical activity in a representative sample of healthy adolescents from Pančevo (Serbia), and the factors that determine these level. Methods: This cross-sectional study included 401 randomly selected adolescents (191 boys and 210 girls) from the city of Pančevo, Serbia. The long version of the International Physical Activity Questionnaire (IPAQ), validated for Serbia, was applied. PA was expressed as metabolic equivalent-minute per week (MET-min/week) and classified as low, moderate, or high. Results: The median PA for the whole sample was 2049.18 MET-min/week. The average PA score in boys was higher (2680 MET-min/week) than in girls (1479 MET-min/week). The prevalence of respondents with inadequate PA was 53.9%, and was higher in girls than in boys. Boys showed the higher values for intense and moderate PA, while the prevalent type of PA among girls was walking. Level of PA did not depend on the adolescent's nutritional status. The most important predictors of PA among the participants were sex, father's PA, and hours spent on sedentary activities like using a computer and watching television. Conclusion: Adolescents in Pančevo do not practice enough physical activity, especially girls. Better strategies are needed, to increase levels of PA, considering the main predictors in the adolescent population. Level of Evidence II; Retrospective study.
DOI: 10.6084/m9.figshare.11609691.v1
title: Profile of Complementary Activities of Last-Year Medical Students at the State University of Feira de Santana, 2009-2017

description: ABSTRACT Complementary Activities aim at enriching the teaching-learning process, favoring the complementation of social and professional formation, being carried out through academic-scientific-cultural activities, of which objective is to improve the academic training. This article aims to characterize the profile of the complementary activities carried out by last-year medical students from Feira de Santana State University (UEFS), from 2009 to 2017. This was a cross-sectional, retrospective and descriptive study. Data collection was carried out by reviewing the data contained in the opinions of the course collegiate and certificates delivered by the students. Subsequently, the data were processed using the software Statistical Package for the Social Sciences (SPSS), version 20.0 for Windows, and presented as charts and tables, with subsequent descriptive analysis of the variables of interest. The sample consisted of 171 students, with a predominance of females (56,1%); most of the activities performed by the students took place as participation in scientific events (51,6%); it was observed that cultural and sports activities are not used by the collegiate. The most sought after extracurricular trainings were in the urgency and emergency area (38.5 %); there was an average of 0.93 articles published per student, with Pediatrics being the area with the highest number of publications (24,8%). Moreover, there was a great disparity between the students’ course load and the hours utilized by the course collegiate, with losses of 74% in the extracurricular training activities and 63% in monitoring + scientific initiation + extension activities. The results of this study point to the need to discuss and revise the Complementary Activities Regulations of the UEFS medical course, and may contribute to medical education, for discussing a topic disregarded by most undergraduate medical courses.
DOI: 10.6084/m9.figshare.11609658
title: Abortion among women living with or not living with HIV/AIDS users of public health services in São Paulo municipality: prevalence, contexts and reasons

description: Abstract Objectives: we investigated the lifetime prevalence of abortion and life contexts and reasons reported for first abortion among women living (WLHA) and not living with HIV/AIDS(WNLHA). Methods: representative samples of 975 users of public health care reference network for HIV/AIDS and of 1,003 users of the primary care public services in São Paulo municipality were selected by cluster-stratified sampling and answered an electronic socio-behavioral questionnaire. Results: the prevalence of abortion was 11.9% (CI95%9.8-13.9) among WLHA and 3.0% (CI95%2.4-5.7) for WNLHA.Most abortions (128) among WLHA occurred before diagnosis and 28 after diagnosis or during pregnancy when diagnosis was given. The majority of women did not use any contraception at the time of the first abortion. The use of misoprostol was the most reported method. Having HIV was very important in deciding to abort for half of the WLHA. Absence of marital life and the lack of desire to have children were the most reported reasons by both groups. Conclusions: the similarity in contexts and reasons to abort among WLHA and WNLHA suggests that they share experiences molded by gender and social inequalities that affect their ability to access sexual and reproductive health resources and services.
DOI: 10.6084/m9.figshare.11609661
title: GDF11 ameliorated myocardial ischemia reperfusion injury by antioxidant stress and up-regulating autophagy in STZ-induced type 1 diabetic rats

description: Abstract Purpose: To investigate whether GDF11 ameliorates myocardial ischemia reperfusion (MIR) injury in diabetic rats and explore the underlying mechanisms. Methods: Diabetic and non-diabetic rats subjected to MIR (30 min of coronary artery occlusion followed by 120 min of reperfusion) with/without GDF11 pretreatment. Cardiac function, myocardial infarct size, creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), superoxide dismutase (SOD) 15-F2tisoprostane, autophagosome, LC3II/I ratio and Belcin-1 level were determined to reflect myocardial injury, oxidative stress and autophagy, respectively. In in vitro study, H9c2 cells cultured in high glucose (HG, 30mM) suffered hypoxia reoxygenation (HR) with/without GDF11, hydrogen peroxide (H2O2) and autophagy inhibitor 3-methyladenine (3-MA) treatment, cell injury; oxidative stress and autophagy were assessed. Results: Pretreatment with GDF11 significantly improved cardiac morphology and function in diabetes, concomitant with decreased arrhythmia severity, infarct size, CK-MB, LDH and 15-F2tisoprostane release, increased SOD activity and autophagy level. In addition, GDF11 notably reduced HR injury in H9c2 cells with HG exposure, accompanied by oxidative stress reduction and autophagy up-regulation. However, those effects were completely reversed by H2O2 and 3-MA. Conclusion: GDF11 can provide protection against MIR injury in diabetic rats, and is implicated in antioxidant stress and autophagy up-regulation.
DOI: 10.6084/m9.figshare.11609658.v1
title: Abortion among women living with or not living with HIV/AIDS users of public health services in São Paulo municipality: prevalence, contexts and reasons

description: Abstract Objectives: we investigated the lifetime prevalence of abortion and life contexts and reasons reported for first abortion among women living (WLHA) and not living with HIV/AIDS(WNLHA). Methods: representative samples of 975 users of public health care reference network for HIV/AIDS and of 1,003 users of the primary care public services in São Paulo municipality were selected by cluster-stratified sampling and answered an electronic socio-behavioral questionnaire. Results: the prevalence of abortion was 11.9% (CI95%9.8-13.9) among WLHA and 3.0% (CI95%2.4-5.7) for WNLHA.Most abortions (128) among WLHA occurred before diagnosis and 28 after diagnosis or during pregnancy when diagnosis was given. The majority of women did not use any contraception at the time of the first abortion. The use of misoprostol was the most reported method. Having HIV was very important in deciding to abort for half of the WLHA. Absence of marital life and the lack of desire to have children were the most reported reasons by both groups. Conclusions: the similarity in contexts and reasons to abort among WLHA and WNLHA suggests that they share experiences molded by gender and social inequalities that affect their ability to access sexual and reproductive health resources and services.
DOI: 10.6084/m9.figshare.11609661.v1
title: GDF11 ameliorated myocardial ischemia reperfusion injury by antioxidant stress and up-regulating autophagy in STZ-induced type 1 diabetic rats

description: Abstract Purpose: To investigate whether GDF11 ameliorates myocardial ischemia reperfusion (MIR) injury in diabetic rats and explore the underlying mechanisms. Methods: Diabetic and non-diabetic rats subjected to MIR (30 min of coronary artery occlusion followed by 120 min of reperfusion) with/without GDF11 pretreatment. Cardiac function, myocardial infarct size, creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), superoxide dismutase (SOD) 15-F2tisoprostane, autophagosome, LC3II/I ratio and Belcin-1 level were determined to reflect myocardial injury, oxidative stress and autophagy, respectively. In in vitro study, H9c2 cells cultured in high glucose (HG, 30mM) suffered hypoxia reoxygenation (HR) with/without GDF11, hydrogen peroxide (H2O2) and autophagy inhibitor 3-methyladenine (3-MA) treatment, cell injury; oxidative stress and autophagy were assessed. Results: Pretreatment with GDF11 significantly improved cardiac morphology and function in diabetes, concomitant with decreased arrhythmia severity, infarct size, CK-MB, LDH and 15-F2tisoprostane release, increased SOD activity and autophagy level. In addition, GDF11 notably reduced HR injury in H9c2 cells with HG exposure, accompanied by oxidative stress reduction and autophagy up-regulation. However, those effects were completely reversed by H2O2 and 3-MA. Conclusion: GDF11 can provide protection against MIR injury in diabetic rats, and is implicated in antioxidant stress and autophagy up-regulation.
DOI: 10.6084/m9.figshare.11609655
title: Evidence of Construct Validity of the Love Components Scale

description: ABSTRACT This study aimed to evaluate the psychometric properties of the Brazilian version of the reduced Love Components Scale. Participants were 491 people in loving relationships. Exploratory factor analysis extracted three factors that explained 73.5% of the common variance that did not reproduce the original structure. The factors showed moderate to strong correlations with each other and with the components of the reduced Triangular Love Scale. The Schmid-Leiman solution indicated the existence of a second-order factor. The reliability coefficients revealed a high internal consistency for all dimensions of the instrument. Additional exploratory factor analysis with the set of items of the two measurements revealed structural indications that they may represent the same components of love.
DOI: 10.6084/m9.figshare.11609655.v1
title: Evidence of Construct Validity of the Love Components Scale

description: ABSTRACT This study aimed to evaluate the psychometric properties of the Brazilian version of the reduced Love Components Scale. Participants were 491 people in loving relationships. Exploratory factor analysis extracted three factors that explained 73.5% of the common variance that did not reproduce the original structure. The factors showed moderate to strong correlations with each other and with the components of the reduced Triangular Love Scale. The Schmid-Leiman solution indicated the existence of a second-order factor. The reliability coefficients revealed a high internal consistency for all dimensions of the instrument. Additional exploratory factor analysis with the set of items of the two measurements revealed structural indications that they may represent the same components of love.
DOI: 10.6084/m9.figshare.11609649
title: Performance of Avocado Seed Activated Carbon as Adsorbent for Highly Sensitive Determination of Cd Using a Flow Injection System Online Coupled to TS-FF-AAS

description: A flow-injection preconcentration system using detection by the thermospray flame furnace atomic absorption spectrometry (FIA-TS-FF-AAS) is proposed. Cd2+ are adsorbed on avocado seed activated carbon (ASAC) packed into a cylindrical mini-column and eluted using HCl solutions for the detection system. A 25–1 fractional factorial and Doehlert matrix design were employed to determine the optimum conditions for cadmium preconcentration (pH 7.68, buffer concentration (Tris/Tris-HCl) of 0.023 mol L-1, eluent concentration (HCl) of 2.0 mol L-1, the adsorbent mass of 100.0 mg and preconcentration flow rate of 4.8 mL min-1). The preconcentration method presents linearity within the range of 0.41-15.00 µg L-1, limits of quantification and detection of 0.41 and 0.12 µg L-1, respectively, preconcentration factor of 10.7, consumption of index of 0.93 mL and sample throughput of 26 h-1. The precision assessed as the relative standard deviation (RSD) were found to be 0.48, 0.90 and 2.30% for inter-day precision (n = 2), and 0.30, 0.44 and 2.48% for intra-day precision (n = 6) for respective cadmium concentration of 0.50, 5.00 and 15.00 µg L-1. The proposed method was applied satisfactorily in samples of cigarette (62.84 ± 11.28 µg kg-1), human hair (69.61 ± 2.38 µg kg-1) and water samples [lake (0.65 ± 0.01 µg L-1), tap and mineral].
DOI: 10.6084/m9.figshare.11609652
title: PRELIMINARY ASSESSMENT OF THE PROCESSING OF HIGH-ACIDITY FATTY MATERIALS USING SOLID CATALYSTS FOR THE OBTAINMENT OF FATTY ACID METHYL ESTERS

description: Abstract This work presents the processing of a high-acidity oil through sequential reactions of esterification using montmorillonite K10 and transesterification using zinc monoglycerolate. Since these solids had not been employed along with this approach beforehand, the objective of this work is to provide a general insight of the proposed process and demonstrate its technical feasibility. In this sense, the processing of a synthetic mixture containing soybean oil and lauric acid provided a reduction of the free fatty acid content from (40.8±0.1) % to (3.1±0.4) % after the esterification reaction and a fatty acid methyl ester yield of (95.4±0.2) % was obtained after the transesterification reaction. As compared to traditional homogeneous catalysts, the solid catalysts employed in this work require higher reaction times to achieve satisfactory ester yields but, on the other hand, they are less sensitive to the presence of both water and free fatty acids in the raw materials and can be easily recovered and reused. Therefore, the results accomplished may help the development of a technology for processing high-acidity fatty materials in order to obtain biodiesel, although its economic feasibility still needs a further assessment.
DOI: 10.6084/m9.figshare.11609649.v1
title: Performance of Avocado Seed Activated Carbon as Adsorbent for Highly Sensitive Determination of Cd Using a Flow Injection System Online Coupled to TS-FF-AAS

description: A flow-injection preconcentration system using detection by the thermospray flame furnace atomic absorption spectrometry (FIA-TS-FF-AAS) is proposed. Cd2+ are adsorbed on avocado seed activated carbon (ASAC) packed into a cylindrical mini-column and eluted using HCl solutions for the detection system. A 25–1 fractional factorial and Doehlert matrix design were employed to determine the optimum conditions for cadmium preconcentration (pH 7.68, buffer concentration (Tris/Tris-HCl) of 0.023 mol L-1, eluent concentration (HCl) of 2.0 mol L-1, the adsorbent mass of 100.0 mg and preconcentration flow rate of 4.8 mL min-1). The preconcentration method presents linearity within the range of 0.41-15.00 µg L-1, limits of quantification and detection of 0.41 and 0.12 µg L-1, respectively, preconcentration factor of 10.7, consumption of index of 0.93 mL and sample throughput of 26 h-1. The precision assessed as the relative standard deviation (RSD) were found to be 0.48, 0.90 and 2.30% for inter-day precision (n = 2), and 0.30, 0.44 and 2.48% for intra-day precision (n = 6) for respective cadmium concentration of 0.50, 5.00 and 15.00 µg L-1. The proposed method was applied satisfactorily in samples of cigarette (62.84 ± 11.28 µg kg-1), human hair (69.61 ± 2.38 µg kg-1) and water samples [lake (0.65 ± 0.01 µg L-1), tap and mineral].
DOI: 10.6084/m9.figshare.11609652.v1
title: PRELIMINARY ASSESSMENT OF THE PROCESSING OF HIGH-ACIDITY FATTY MATERIALS USING SOLID CATALYSTS FOR THE OBTAINMENT OF FATTY ACID METHYL ESTERS

description: Abstract This work presents the processing of a high-acidity oil through sequential reactions of esterification using montmorillonite K10 and transesterification using zinc monoglycerolate. Since these solids had not been employed along with this approach beforehand, the objective of this work is to provide a general insight of the proposed process and demonstrate its technical feasibility. In this sense, the processing of a synthetic mixture containing soybean oil and lauric acid provided a reduction of the free fatty acid content from (40.8±0.1) % to (3.1±0.4) % after the esterification reaction and a fatty acid methyl ester yield of (95.4±0.2) % was obtained after the transesterification reaction. As compared to traditional homogeneous catalysts, the solid catalysts employed in this work require higher reaction times to achieve satisfactory ester yields but, on the other hand, they are less sensitive to the presence of both water and free fatty acids in the raw materials and can be easily recovered and reused. Therefore, the results accomplished may help the development of a technology for processing high-acidity fatty materials in order to obtain biodiesel, although its economic feasibility still needs a further assessment.