cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11609415.v1
title: Validity Evidence of a Scale Designed to Assess Children's Metacognition

description: ABSTRACT Thoughts and knowledge that individuals have about their own cognitive processes define the term metacognition. The aim of this work was to continue the validation process of Metacognition Scale (EMETA) analyzing evidence based on the structure and consistency internal and a comparison between the means to investigate the influences of variables such as gender, school type and age of participants. The results found with 196 participants between 9 and 12 years old indicate the presence of a single factor called Metacognition and the possibility to reduction for 40 items. There was no significant difference influenced by the three variables. Despite the favorable results to the accumulation of evidence of validity, other parameters must still be evaluated on future researches.
DOI: 10.6084/m9.figshare.11609412.v1
title: Factors associated with the route of birth delivery in a city in the Northeast region in the State of Rio Grande do Sul, Brazil

description: Abstract Objectives: to investigate factors associated with the route of birth delivery in a hospital extending public and private healthcare services, in the Northeast region in the State of Rio Grande do Sul. Methods: a cross-sectional study with 676 postpartum women, conducted from January to May 2017. The data were collected from the hospital records and women were interviewed shortly after childbirth in the maternity. Data analysis was performed by associating the Pearson’s chi-square and the Poisson regression tests with robust variance. Results: the prevalence of cesarean sections was 58.7%, that is, 41.7% in public health-care and 83.9% in private healthcare. The main reason for having a cesarean section was having had a previous one (PR=5.69; CI95%=3.64 - 8.90; p&lt;0.001), followed by having source of childbirth financing (PR=1.54; CI95%=1.27 - 1.87; p&lt;0.001), having source of prenatal care financing (PR=1.48; CI95%=1.22 - 1.79; p&lt;0.001), the childbirth and prenatal care professional (PR=1.46; CI95%=1.28 - 1.66; p&lt;0.001) and the prenatal care professional (PR=1.43; CI95%=1.07 - 1.90; p=0.016). Conclusions: the high cesarean section rates identified in this study were mainly associated with previous cesarean section. The findings suggest a change in the current childbirth care model in the city, characterized as highly medicalized, focused on the physician and on hospital care.
DOI: 10.6084/m9.figshare.11609400
title: Quality of death counts and adult mortality registration in Suriname and its main regions

description: Abstract Suriname statistical office assumes that mortality data in the country is of good quality and does not perform any test before producing life table estimates. However, lack of data quality is a concern in the less developed areas of the world. The primary objective of this article is to evaluate the quality of death counts registration in the country and its main regions from 2004 to 2012 and to produce estimates of adult mortality by sex. We use data from population, by age and sex, from the last censuses and death counts from the Statistical office. We use traditional demographic methods to perform the analysis. We find that the quality of the death count registration in Suriname and its central regions is reasonably good. We also find that population data can be considered good. The results reveal a small difference in the completeness for males and females and that for the sub-national population the choice of method has implication on the results. To sum up, data quality in Suriname is better than in most countries in the region, but there are considerable regional differences as observed in other locations.
DOI: 10.6084/m9.figshare.11609400.v1
title: Quality of death counts and adult mortality registration in Suriname and its main regions

description: Abstract Suriname statistical office assumes that mortality data in the country is of good quality and does not perform any test before producing life table estimates. However, lack of data quality is a concern in the less developed areas of the world. The primary objective of this article is to evaluate the quality of death counts registration in the country and its main regions from 2004 to 2012 and to produce estimates of adult mortality by sex. We use data from population, by age and sex, from the last censuses and death counts from the Statistical office. We use traditional demographic methods to perform the analysis. We find that the quality of the death count registration in Suriname and its central regions is reasonably good. We also find that population data can be considered good. The results reveal a small difference in the completeness for males and females and that for the sub-national population the choice of method has implication on the results. To sum up, data quality in Suriname is better than in most countries in the region, but there are considerable regional differences as observed in other locations.
DOI: 10.6084/m9.figshare.11609388
title: Strontium Oxide Decorated Iron Oxide Activated Carbon Nanocomposite: A New Adsorbent for Removal of Nitrate from Well Water

description: In the present study, activated carbon was magnetized by iron oxide and modified by strontium based nanoparticles (FeAC@Sr) to introduce it as an efficient favorable adsorbent for the removal of nitrate ions from underground water. The decorated adsorbent was characterized in terms of size, structure, morphology and composition using scanning electron microscopy, Fourier-transform infrared spectroscopy and energy dispersive X-ray spectroscopy. The equilibrium adsorption data were well fitted and explained by Langmuir isotherm with a maximum adsorption capacity of 87.42 mg g-1 (theoretical value calculated from the Langmuir isotherm model). Regarding adsorption kinetic it was seen that it is fit for pseudo-second-order process with an equilibrium state which was reached at pH 4.0 in 90 min. The results also revealed that the incorporation of positively charged strontium and iron oxide into the activated carbon has triggered removal efficiency for the negatively charged nitrate ions.
DOI: 10.6084/m9.figshare.11609388.v1
title: Strontium Oxide Decorated Iron Oxide Activated Carbon Nanocomposite: A New Adsorbent for Removal of Nitrate from Well Water

description: In the present study, activated carbon was magnetized by iron oxide and modified by strontium based nanoparticles (FeAC@Sr) to introduce it as an efficient favorable adsorbent for the removal of nitrate ions from underground water. The decorated adsorbent was characterized in terms of size, structure, morphology and composition using scanning electron microscopy, Fourier-transform infrared spectroscopy and energy dispersive X-ray spectroscopy. The equilibrium adsorption data were well fitted and explained by Langmuir isotherm with a maximum adsorption capacity of 87.42 mg g-1 (theoretical value calculated from the Langmuir isotherm model). Regarding adsorption kinetic it was seen that it is fit for pseudo-second-order process with an equilibrium state which was reached at pH 4.0 in 90 min. The results also revealed that the incorporation of positively charged strontium and iron oxide into the activated carbon has triggered removal efficiency for the negatively charged nitrate ions.
DOI: 10.6084/m9.figshare.11609385
title: Effect of Etching Temperature on Surface Properties of Ti6Al4V Alloy for Use in Biomedical Applications

description: The objective of this study is to evaluate the surface physicochemical properties of Ti6Al4V alloy after etching with a piranha’s solution at temperatures of 25 °C, 40 °C, and 60 °C for 30 min. Scanning electron microscopy with energy-dispersive X-ray spectroscopy, optical profilometry, X-ray diffraction, and wettability analyses were used to characterize the surface of the samples. In addition, corrosion tests were performed using potentiodynamic polarization and electrochemical impedance spectroscopy. The proposed surface treatment did not alter the wettability and surface chemistry (crystallinity), but the texture, surface roughness, superficial area, and corrosion resistance of the alloy could be changed by varying the etching temperature. Considering that these properties are indirect indicators of the alloy’s potential success in the osseointegration of a dental implant, the surface treatment of the Ti6Al4V alloy using a piranha solution while controlling the etching temperature has attractive biomedical applications.
DOI: 10.6084/m9.figshare.11609382
title: STUDY OF THE EFFECT OF FUNCTIONALIZATION OF CARBON NANOTUBES ON GAS SEPARATION

description: Abstract In order to improve the adsorption capacity and selectivity of CO2/CH4 and CO2/N2, we have functionalized multi-walled carbon nanotubes (MWCNT) with 3-aminopropyltriethoxysilane (APTES). The functionalized MWCNT was characterized by Fourier transform infrared (FT-IR), energy dispersive X-ray spectroscopy (EDX) and BET analysis. CO2, CH4 and N2 adsorption at two different temperatures and P &lt; 5 bar on the functionalized MWCNTs was investigated by the volumetric method. The selectivity of the functionalized MWCNTs for CO2/CH4 and CO2/N2 was studied and compared with MWCNTs. The functionalized MWCNTs show higher adsorption capacity of CO2 and selectivity of CO2/CH4 and CO2/N2 in comparison with the MWCNTs at different pressures. The highest CO2/CH4 and CO2/N2 selectivities for the functionalized MWCNTs were 6.78 and 26.14, respectively, at a pressure of 0.2 bar and at 298 K. Two of the most common adsorption models, the Langmuir and Sips isotherms, were used to correlate the experimental data of CO2 and CH4 adsorption on the adsorbents. The results confirm that the functionalized MWCNTs are promising materials for the separation and purification of gases.
DOI: 10.6084/m9.figshare.11609382.v1
title: STUDY OF THE EFFECT OF FUNCTIONALIZATION OF CARBON NANOTUBES ON GAS SEPARATION

description: Abstract In order to improve the adsorption capacity and selectivity of CO2/CH4 and CO2/N2, we have functionalized multi-walled carbon nanotubes (MWCNT) with 3-aminopropyltriethoxysilane (APTES). The functionalized MWCNT was characterized by Fourier transform infrared (FT-IR), energy dispersive X-ray spectroscopy (EDX) and BET analysis. CO2, CH4 and N2 adsorption at two different temperatures and P &lt; 5 bar on the functionalized MWCNTs was investigated by the volumetric method. The selectivity of the functionalized MWCNTs for CO2/CH4 and CO2/N2 was studied and compared with MWCNTs. The functionalized MWCNTs show higher adsorption capacity of CO2 and selectivity of CO2/CH4 and CO2/N2 in comparison with the MWCNTs at different pressures. The highest CO2/CH4 and CO2/N2 selectivities for the functionalized MWCNTs were 6.78 and 26.14, respectively, at a pressure of 0.2 bar and at 298 K. Two of the most common adsorption models, the Langmuir and Sips isotherms, were used to correlate the experimental data of CO2 and CH4 adsorption on the adsorbents. The results confirm that the functionalized MWCNTs are promising materials for the separation and purification of gases.
DOI: 10.6084/m9.figshare.11609379
title: MUSCLE STRENGTH TRAINING AND PRESCRIBING IN COMPETITIVE TENNIS PLAYERS: A SYSTEMATIC REVIEW

description: ABSTRACT The application of muscle strength training has been investigated for the development of physical capacities in sports. Although the use of training methods is quite clear, the act of prescribing the external training load is often not properly explained. Grass court, or lawn tennis, is a sport with considerable physical demands and strength training can help player performance. Thus, the aim of this study was to investigate strength training methods and external variables in training programs in competitive tennis players. Considering the findings of this particular study, we found that muscle building workout and plyometrics in combination with exercises designed specifically for the sport (tennis drills) were the most efficient muscle strength training methods for improving different strength manifestations. Level of evidence I; Diagnostic study – Investigation of diagnostic test.
DOI: 10.6084/m9.figshare.11609385.v1
title: Effect of Etching Temperature on Surface Properties of Ti6Al4V Alloy for Use in Biomedical Applications

description: The objective of this study is to evaluate the surface physicochemical properties of Ti6Al4V alloy after etching with a piranha’s solution at temperatures of 25 °C, 40 °C, and 60 °C for 30 min. Scanning electron microscopy with energy-dispersive X-ray spectroscopy, optical profilometry, X-ray diffraction, and wettability analyses were used to characterize the surface of the samples. In addition, corrosion tests were performed using potentiodynamic polarization and electrochemical impedance spectroscopy. The proposed surface treatment did not alter the wettability and surface chemistry (crystallinity), but the texture, surface roughness, superficial area, and corrosion resistance of the alloy could be changed by varying the etching temperature. Considering that these properties are indirect indicators of the alloy’s potential success in the osseointegration of a dental implant, the surface treatment of the Ti6Al4V alloy using a piranha solution while controlling the etching temperature has attractive biomedical applications.
DOI: 10.6084/m9.figshare.11609376
title: NANDROLONE DECANOATE IS PROOXIDANT IN THE MYOCARDIUM OF EXERCISED OR SEDENTARY RATS

description: ABSTRACT Introduction: Nandrolone decanoate is a synthetic testosterone analogue considered one of the most widely used anabolic androgenic steroids (AAS) among adolescents and athletes. Chronic ingestion of AAS increases the incidence of cardiovascular abnormalities in athletes, but the mechanism that causes these changes remains unknown. Objectives: The purpose of this study is to verify the possible effects of the use of anabolic androgenic steroids (AAS) on the morphology and oxidative metabolism of the heart in exercised and sedentary rats. Methods: This is a comparative prospective level II study. Twenty-four Wistar rats were distributed in groups that performed voluntary (TG) and sedentary (SG) running exercises, and used AAS: the Anabolic Training Group (ATG), and the Anabolic Sedentary Group (ASG). During the three months of the running protocol, the animals received an intramuscular injection of 5 mg/kg b.p. of AAS. After the training period, the rats were euthanized and the hearts were removed for evaluation of lipid peroxidation and antioxidant capacity, and for morphometric analysis. Results: The anabolic groups, ASG (0.3072 ± 0.0531) and ATG (0.2732 ± 0.0413), presented higher lipid peroxidation when compared to the non-anabolic groups SG (0.1705 ± 0.0224) and TG (0.1785 ± 0.0340). Conclusion: There was no change in total antioxidant capacity or in the thickness of the interventricular septum and left ventricular wall. Thus, the use of anabolic androgenic steroids did not cause morphological changes in the myocardium. However it did alter the oxidative metabolism. It was also verified that aerobic exercise had no protective effect against lipid peroxidation in the myocardium caused by the use of AAS. Level of evidence II; Prospective comparative study.
DOI: 10.6084/m9.figshare.11609379.v1
title: MUSCLE STRENGTH TRAINING AND PRESCRIBING IN COMPETITIVE TENNIS PLAYERS: A SYSTEMATIC REVIEW

description: ABSTRACT The application of muscle strength training has been investigated for the development of physical capacities in sports. Although the use of training methods is quite clear, the act of prescribing the external training load is often not properly explained. Grass court, or lawn tennis, is a sport with considerable physical demands and strength training can help player performance. Thus, the aim of this study was to investigate strength training methods and external variables in training programs in competitive tennis players. Considering the findings of this particular study, we found that muscle building workout and plyometrics in combination with exercises designed specifically for the sport (tennis drills) were the most efficient muscle strength training methods for improving different strength manifestations. Level of evidence I; Diagnostic study – Investigation of diagnostic test.
DOI: 10.6084/m9.figshare.11609373
title: Abdominal Computed Tomography in the Emergency Room: Overuse of Medical Technologies and the Depreciation of Clinical Diagnosis

description: ABSTRACT The number of computed tomography (CT) examinations performed in urgent care has been increasing since its introduction in the emergency room (ER). This has led to a substantial increase in hospital costs and patient’s exposure to ionizing radiation, which has led to the need for more judicious use of CT in the ER. The aim of this study is to show the difference between clinical (pre-CT), tomographic (post-CT) and definitive diagnoses in patients with abdominal CT in the ER. This is a cross-sectional study, with retrospective data collection through electronic medical records. A total of 834 patients with acute abdominal pain (AAP) lasting less than 7 days, submitted to abdominal computed tomography between January 1, 2016 and December 31, 2017 were selected. Clinical, tomographic and final diagnoses were recorded and submitted to a concordance analysis by calculating the Kappa coefficient, considering p &lt;0.05 as significant. CT scans were considered unnecessary when the clinical diagnosis was concordant when both final and post-CT diagnosis were also concordant. The most frequent diagnoses were nonspecific abdominal pain (NSAP), obstructive uropathy (OU) and appendicitis (AP), corresponding to 73.6%, 58.5% and 61.3% of all diagnoses, respectively. Data analysis showed a moderate Concordance for NSAP (kappa: 0.41, p ¬&lt;0.001) and for OU (kappa: 0.46, p &lt;0.001) and excellent for AP (kappa:0.87, p &lt;0.001). In total, 52.6% of computed tomography were considered unnecessary for NSAP, 82.4% for OU and 91.7% for AP. It was concluded that there are high rates of CT that may be considered unnecessary for the diagnosis of the main emergency conditions, especially appendicitis. The study warns to the exaggerated use of CT in the ER and raise discussions over the possible causes, such as lack of confidence in the clinical diagnosis, fear of diagnostic errors and fear of malpractice lawsuits, of which possible solutions may be more effective when applied since the medical education basis.
DOI: 10.6084/m9.figshare.11609376.v1
title: NANDROLONE DECANOATE IS PROOXIDANT IN THE MYOCARDIUM OF EXERCISED OR SEDENTARY RATS

description: ABSTRACT Introduction: Nandrolone decanoate is a synthetic testosterone analogue considered one of the most widely used anabolic androgenic steroids (AAS) among adolescents and athletes. Chronic ingestion of AAS increases the incidence of cardiovascular abnormalities in athletes, but the mechanism that causes these changes remains unknown. Objectives: The purpose of this study is to verify the possible effects of the use of anabolic androgenic steroids (AAS) on the morphology and oxidative metabolism of the heart in exercised and sedentary rats. Methods: This is a comparative prospective level II study. Twenty-four Wistar rats were distributed in groups that performed voluntary (TG) and sedentary (SG) running exercises, and used AAS: the Anabolic Training Group (ATG), and the Anabolic Sedentary Group (ASG). During the three months of the running protocol, the animals received an intramuscular injection of 5 mg/kg b.p. of AAS. After the training period, the rats were euthanized and the hearts were removed for evaluation of lipid peroxidation and antioxidant capacity, and for morphometric analysis. Results: The anabolic groups, ASG (0.3072 ± 0.0531) and ATG (0.2732 ± 0.0413), presented higher lipid peroxidation when compared to the non-anabolic groups SG (0.1705 ± 0.0224) and TG (0.1785 ± 0.0340). Conclusion: There was no change in total antioxidant capacity or in the thickness of the interventricular septum and left ventricular wall. Thus, the use of anabolic androgenic steroids did not cause morphological changes in the myocardium. However it did alter the oxidative metabolism. It was also verified that aerobic exercise had no protective effect against lipid peroxidation in the myocardium caused by the use of AAS. Level of evidence II; Prospective comparative study.
DOI: 10.6084/m9.figshare.11609370
title: Mitochondrial genomes of genus Atta (Formicidae: Myrmicinae) reveal high gene organization and giant intergenic spacers

description: Abstract The ants of the genus Atta are considered important pests to agriculture in the Americas, although Atta species are also important contributors to ecosystem functions in the various habitats in which they occur. The aim of this study was to assemble four complete mitochondrial genomes of the genus Atta, construct the phylogenomic tree, and analyze the gene content, order, and organization. The mitogenomes of A. colombica, A. opaciceps, A. texana, and A. sexdens rubropilosa comprise 18,392, 19,257, 19,709, and 19,748 bp, respectively. The four Atta mitogenomes showed the charactistics typical of those of insects, with 13 protein-coding genes, 22 tRNAs, and 2 rRNAs, with genes displayed in the conventional order. Analysis for intergenic spacer regions showed that Atta intergenic spacers are larger than those of the outgroups. Phylogenomic analyses using partial cytochrome oxidase I gene sequences showed similar topologies to previous phylogenetic analyses, with high clade support values. We conclude that Atta mitogenomes are characterized by high conservation in gene order and have giant intergenic spacers in the genus Atta.
DOI: 10.6084/m9.figshare.11609373.v1
title: Abdominal Computed Tomography in the Emergency Room: Overuse of Medical Technologies and the Depreciation of Clinical Diagnosis

description: ABSTRACT The number of computed tomography (CT) examinations performed in urgent care has been increasing since its introduction in the emergency room (ER). This has led to a substantial increase in hospital costs and patient’s exposure to ionizing radiation, which has led to the need for more judicious use of CT in the ER. The aim of this study is to show the difference between clinical (pre-CT), tomographic (post-CT) and definitive diagnoses in patients with abdominal CT in the ER. This is a cross-sectional study, with retrospective data collection through electronic medical records. A total of 834 patients with acute abdominal pain (AAP) lasting less than 7 days, submitted to abdominal computed tomography between January 1, 2016 and December 31, 2017 were selected. Clinical, tomographic and final diagnoses were recorded and submitted to a concordance analysis by calculating the Kappa coefficient, considering p &lt;0.05 as significant. CT scans were considered unnecessary when the clinical diagnosis was concordant when both final and post-CT diagnosis were also concordant. The most frequent diagnoses were nonspecific abdominal pain (NSAP), obstructive uropathy (OU) and appendicitis (AP), corresponding to 73.6%, 58.5% and 61.3% of all diagnoses, respectively. Data analysis showed a moderate Concordance for NSAP (kappa: 0.41, p ¬&lt;0.001) and for OU (kappa: 0.46, p &lt;0.001) and excellent for AP (kappa:0.87, p &lt;0.001). In total, 52.6% of computed tomography were considered unnecessary for NSAP, 82.4% for OU and 91.7% for AP. It was concluded that there are high rates of CT that may be considered unnecessary for the diagnosis of the main emergency conditions, especially appendicitis. The study warns to the exaggerated use of CT in the ER and raise discussions over the possible causes, such as lack of confidence in the clinical diagnosis, fear of diagnostic errors and fear of malpractice lawsuits, of which possible solutions may be more effective when applied since the medical education basis.