cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.8031167.v1
title: Dressing the Slavery: Textiles, Slaves, and the Contrato de Angola (18 th Century)

description: ABSTRACT The Transatlantic slave trade was closely related to the exchange of manufactured goods between Europeans and Africans, particularly of textiles, as historiography has pointed out for decades. In Angola’s ports and hinterland, textile imports were essential to procure and export slaves as well, since fabrics made up the bundle of goods exchanged for enslaved people. In this article, we approach the role of Contrato de Angola (contract to collect tax) as a supplier of textiles to the Luanda based merchants, underlying the geographical origin and the sort of fabrics, resorting to trade records by the Contrato’s managers in the 1760s and 1770s. In order to highlight the results, we draw comparisons between our figures and data of commercial dealings from late seventeenth century and from the Angolan external trade between the end of the eighteenth century and the early nineteenth century. We conclude that some of the features of this trade were quite stable, such as the Lisbon merchants’s aversion to directly invest in slaves bound for Atlantic crossing, and we emphasize some differences as well, particularly the outstanding share of European textiles in the Contrato’s role as a supplier of trade goods.
DOI: 10.6084/m9.figshare.8031173.v1
title: Nitrous Oxide Emissions in No-Tillage Onion ( Allium cepa L.) Crops Are Increased by Oilseed Radish Cover Crop and Poultry Manure Application

description: ABSTRACT The use of cover crops and poultry manure (PM) is an alternative to reduce the use of synthetic inputs and can contribute to the nutrient cycling in onions ( Allium cepa L.) grown under a no-tillage system. However, this management practice may contribute to an increase in N2O emissions to the atmosphere. The aims of this study were to evaluate the immediate effect on N2O emissions of adding PM onto cover crop residues and to verify the effect of different no-tillage systems on N2O emissions. Two studies (laboratory and field) were conducted with the addition of oilseed radish (OR), black oat (BO), and weed (WD) residues with and without PM under a no-tillage (NT) system. Emission of N2O (kg ha-1) was influenced by the different residue-management systems and was higher in treatments with OR residues (2.96 ± 0.67 kg ha-1 for OR and 5.28 ± 1.04 kg ha-1 for OR + PM). The other treatments behaved similarly with emissions of approximately 1.91 ± 0.17 kg ha-1 of N-N2O. The highest N2O emissions in the field study were found within the first 15 days and represented 50.3 % of the average emissions. Poultry manure showed high emissions when the cover crop was OR, but not when it was BO and WD.
DOI: 10.6084/m9.figshare.8031158
title: Efficacy, Safety, and Performance of Isolated Left vs. Right Ventricular Pacing in Patients with Bradyarrhythmias: A Randomized Controlled Trial

description: Abstract Background: Considering the potential deleterious effects of right ventricular (RV) pacing, the hypothesis of this study is that isolated left ventricular (LV) pacing through the coronary sinus is safe and may provide better clinical and echocardiographic benefits to patients with bradyarrhythmias and normal ventricular function requiring heart rate correction alone. Objective: To assess the safety, efficacy, and effects of LV pacing using an active-fixation coronary sinus lead in comparison with RV pacing, in patients eligible for conventional pacemaker (PM) implantation. Methods: Randomized, controlled, and single-blinded clinical trial in adult patients submitted to PM implantation due to bradyarrhythmias and systolic ventricular function ≥ 0.40. Randomization (RV vs. LV) occurred before PM implantation. The main results of the study were procedural success, safety, and efficacy. Secondary results were clinical and echocardiographic changes. Chi-squared test, Fisher's exact test and Student's t-test were used, considering a significance level of 5%. Results: From June 2012 to January 2014, 91 patients were included, 36 in the RV Group and 55 in the LV Group. Baseline characteristics of patients in both groups were similar. PM implantation was performed successfully and without any complications in all patients in the RV group. Of the 55 patients initially allocated into the LV group, active-fixation coronary sinus lead implantation was not possible in 20 (36.4%) patients. The most frequent complication was phrenic nerve stimulation, detected in 9 (25.7%) patients in the LV group. During the follow-up period, there were no hospitalizations due to heart failure. Reductions of more than 10% in left ventricular ejection fraction were observed in 23.5% of patients in the RV group and 20.6% of those in the LV group (p = 0.767). Tissue Doppler analysis showed that 91.2% of subjects in the RV group and 68.8% of those in the LV group had interventricular dyssynchrony (p = 0.022). Conclusion: The procedural success rate of LV implant was low, and the safety of the procedure was influenced mainly by the high rate of phrenic nerve stimulation in the postoperative period.
DOI: 10.6084/m9.figshare.8031164.v1
title: Does Ferralsol Clay Mineralogy Maintain Potassium Long-Term Supply to Plants?

description: ABSTRACT Ferralsols ( Latossolos ) should contain few or no 2:1 clay minerals and have low potassium (K) contents, and consequently low levels of non-exchangeable K forms are expected. The aim of this study was to evaluate how the clay mineralogy of a Ferralsol affects the soil K dynamics in response to K fertilization during cropping and whether the clay mineralogy was altered due to successive crops and K fertilization. A tropical Brazilian Ferralsol under field conditions was sampled (0.00-0.20 m) in contrasting K fertilization plots: no K application (control plot) and 3,200 kg ha-1 applied K2O fertilizer. These two treatments were submitted at eight different crop cycles, performed in pots under greenhouse conditions, and fertilized with 0, 30, and 90 mg kg-1 K2O before each crop cycle. The biomass K, exchangeable K, non-exchangeable K, and structural K contents were determined after each crop cycle. At the end of the experiment, the presence of 2:1 clay minerals with hydroxy-aluminum interlayered in the soil clay fraction was verified, which ensured K adsorption in a form available to plants when K fertilizer was added. Cropping without K fertilization resulted in limited crop yields and exhausted the exchangeable and non-exchangeable K soil reserves. The previous K fertilization history influenced the soil K reserve and its availability to plants in the Ferralsol studied. The crops without K addition decreased the proportion of 2:1 hydroxy-Al interlayer minerals in the soil in relation to the kaolinite clay minerals.
DOI: 10.6084/m9.figshare.8031155
title: Frequency of leucism in a colony of Anoura geoffroyi (Chiroptera: Phyllostomidae) roosting in a ferruginous cave in Brazil

description: Abstract: We provide the first report of the frequency of leucism for a species of Neotropical bat. Leucism is an anomaly of the skin pigmentation of an animal that manifests itself as the total or partial loss of the natural color of the species, and can affect part of or the entire body. During a study involving capture and marking individuals of a population of A. geoffroyi residing in a cave in the Brazilian state of Minas Gerais, seven individuals with some degree of depigmentation were recorded out of 616 individuals marked, for a frequency of 1.1%. Since leucism is due to recessive gene expression, these findings may indicate that the population is isolated and possesses a high level of endogamy. Factors that may be responsible for this condition in the studied population remain unknown.
DOI: 10.6084/m9.figshare.8031146
title: SOCIAL CLASSES AND FOOD: PATTERNS OF FOOD CONSUMPTION IN BRAZIL TODAY

description: The social stratification of food consumption is the main empirical object of this paper. It aims to investigate the possible homology between the practices in the field of food consumption, on the one hand, and the relative positions in social space occupied by social agents, on the other hand. Therefore, such an investigation may be included in a set of studies influenced by Pierre Bourdieu’s sociology of class, which the matizes the symbolic dimensional of class relations. Secondarily, this paper attempts to further our understanding of the mechanisms of social reproduction, especially regarding the role of lifestyles in the production and reproduction of inequalities and symbolic hierarchies.
DOI: 10.6084/m9.figshare.8031155.v1
title: Frequency of leucism in a colony of Anoura geoffroyi (Chiroptera: Phyllostomidae) roosting in a ferruginous cave in Brazil

description: Abstract: We provide the first report of the frequency of leucism for a species of Neotropical bat. Leucism is an anomaly of the skin pigmentation of an animal that manifests itself as the total or partial loss of the natural color of the species, and can affect part of or the entire body. During a study involving capture and marking individuals of a population of A. geoffroyi residing in a cave in the Brazilian state of Minas Gerais, seven individuals with some degree of depigmentation were recorded out of 616 individuals marked, for a frequency of 1.1%. Since leucism is due to recessive gene expression, these findings may indicate that the population is isolated and possesses a high level of endogamy. Factors that may be responsible for this condition in the studied population remain unknown.
DOI: 10.6084/m9.figshare.8031158.v1
title: Efficacy, Safety, and Performance of Isolated Left vs. Right Ventricular Pacing in Patients with Bradyarrhythmias: A Randomized Controlled Trial

description: Abstract Background: Considering the potential deleterious effects of right ventricular (RV) pacing, the hypothesis of this study is that isolated left ventricular (LV) pacing through the coronary sinus is safe and may provide better clinical and echocardiographic benefits to patients with bradyarrhythmias and normal ventricular function requiring heart rate correction alone. Objective: To assess the safety, efficacy, and effects of LV pacing using an active-fixation coronary sinus lead in comparison with RV pacing, in patients eligible for conventional pacemaker (PM) implantation. Methods: Randomized, controlled, and single-blinded clinical trial in adult patients submitted to PM implantation due to bradyarrhythmias and systolic ventricular function ≥ 0.40. Randomization (RV vs. LV) occurred before PM implantation. The main results of the study were procedural success, safety, and efficacy. Secondary results were clinical and echocardiographic changes. Chi-squared test, Fisher's exact test and Student's t-test were used, considering a significance level of 5%. Results: From June 2012 to January 2014, 91 patients were included, 36 in the RV Group and 55 in the LV Group. Baseline characteristics of patients in both groups were similar. PM implantation was performed successfully and without any complications in all patients in the RV group. Of the 55 patients initially allocated into the LV group, active-fixation coronary sinus lead implantation was not possible in 20 (36.4%) patients. The most frequent complication was phrenic nerve stimulation, detected in 9 (25.7%) patients in the LV group. During the follow-up period, there were no hospitalizations due to heart failure. Reductions of more than 10% in left ventricular ejection fraction were observed in 23.5% of patients in the RV group and 20.6% of those in the LV group (p = 0.767). Tissue Doppler analysis showed that 91.2% of subjects in the RV group and 68.8% of those in the LV group had interventricular dyssynchrony (p = 0.022). Conclusion: The procedural success rate of LV implant was low, and the safety of the procedure was influenced mainly by the high rate of phrenic nerve stimulation in the postoperative period.
DOI: 10.6084/m9.figshare.8031143
title: Preoperative computed tomography evaluation of the paranasal sinuses: what should the physician know? - pictorial essay

description: Abstract The introduction of functional endoscopic sinus surgery in the 1980s brought about a drastic change in the treatment of patients with rhinosinusitis, improving quality of life through the removal of pathological processes or anatomical variations that obstruct the drainage pathways of the paranasal sinuses. However, despite the routine use of computed tomography in the anatomical evaluation of the paranasal sinuses, most radiological reports still do not provide sufficient information to guide the surgical planning. The objective of this pictorial essay was to demonstrate, through computed tomography, the main anatomical variations of the paranasal sinuses, the recognition of which is fundamental for preoperative planning, in order to avoid treatment failure and iatrogenic complications.
DOI: 10.6084/m9.figshare.8031134
title: Ecotoxicological risk assessment due to the presence of bisphenol A and caffeine in surface waters in the Sinos River Basin - Rio Grande do Sul - Brazil

description: Abstract Bisphenol A (BPA) is an emerging contaminant, regularly detected in aquatic ecosystems, considered as an endocrine disrupting compound (EDC). Caffeine is another chemical related to human activity, often found in surface waters. The objective of this study was to evaluate the ecotoxicological risk due to BPA and caffeine in water samples from the Sinos River basin, Rio Grande do Sul, Brazil. Water samples were collected at three sites monthly from May 9 th, 2016 to April 11th, 2017 (n = 36). BPA concentrations in water samples collected were in the range of not detected to 517 ng L-1 and caffeine concentrations in the range of 41.7 to 28,439.6 ng L-1. The concentration of BPA in the analyzed samples had a moderate correlation with caffeine (rs = 0.402). High ecotoxicological risk for BPA was characterized in 77.77% of samples, with 11.11% presenting medium and 11.1% presenting low risk. For caffeine 13.9%, 50% and 36.11% of the samples presented high, medium and low risk, respectively. Caffeine concentrations in water can be used as predictors of BPA concentrations above 10 ng L-1, the lower concentration of ecotoxicological risk, with specificity of 66.7% and sensitivity of 70.4%. The assessment of aquatic risks has shown that both investigated compounds pose risks to organisms in the studied surface waters, mouth of the Pampa stream, mouth of the Luiz Rau stream and catchment point for public supply in Lomba Grande.
DOI: 10.6084/m9.figshare.8031137
title: The Prevalence of Metabolic Syndrome in the Different Phenotypes of Polycystic Ovarian Syndrome

description: Abstract Objective To evaluate the prevalence of metabolic syndrome (MetS) in the phenotypes of polycystic ovarian syndrome (PCOS). Methods This was a cross-sectional study involving 111 women aged between 18 and 39 years old diagnosed with PCOS, according to the Rotterdam Criteria, and grouped into four phenotypes: A: ovulatory dysfunction + hyperandrogenism + polycystic ovaries; B: ovulatory dysfunction + hyperandrogenism; C: hyperandrogenism + polycystic ovaries; D: ovulatory dysfunction + polycystic ovaries. To evaluate the presence of MetS, wemeasured serum triglyceride levels, HDL cholesterol, fasting blood glucose, blood pressure, and waist circumference. Results The prevalence of MetS found in this sample was 33.6%, and there was no statistically significant difference (p &lt; 0.05) among the 4 phenotypes. However, phenotype D presented a significantly higher mean glucose level after fasting (93.6 mg/dL) and 2 hours after ingesting a solution with 75 g of anhydrous glucose (120 mg/dL), as well as the lowest mean level of high-density lipoprotein (HDL) cholesterol (44.7 mg/dL). The women in this group demonstrated a high prevalence of abdominal circumference ≥ 80 cm (68.2%), as well as the highest mean abdominal circumference (90.1 cm). Amongst the women with an abdominal circumference ≥ 80 cm, phenotype A increased approximately six-fold the chance of developing metabolic syndrome in relation to phenotype C. Conclusion The four phenotypes of PCOS demonstrated similar prevalence rates of metabolic syndrome; abdominal obesity presented a relevant role in the development of metabolic alterations, regardless of the phenotype.
DOI: 10.6084/m9.figshare.8031140
title: Gamification as an active learning strategy in the Physics education

description: Abstract This work presents the results of the learning gain provided by gamification applied as an active learning strategy in Physics classes with high school students. Gamification consists of using game design elements in the learning environment to engage, motivate, and improve student performance. In this investigation, a quasi-experimental study was carried out involving control group (CG) and experimental group (GE). The instruments used for data collection were two equal tests applied before and after the application of the methodology. The performance analysis of each group was performed through the normalized gain test proposed by Hake. The results showed that the students who had gamified classes achieved a learning gain (g = 0.38) higher than the students who had traditional classes (g = 0,11). Given the lack of empirical studies in the literature that measure normalized gain in gamified activities in Physics education, it is hoped that this research may contribute to cover this gap.
DOI: 10.6084/m9.figshare.8031134.v1
title: Ecotoxicological risk assessment due to the presence of bisphenol A and caffeine in surface waters in the Sinos River Basin - Rio Grande do Sul - Brazil

description: Abstract Bisphenol A (BPA) is an emerging contaminant, regularly detected in aquatic ecosystems, considered as an endocrine disrupting compound (EDC). Caffeine is another chemical related to human activity, often found in surface waters. The objective of this study was to evaluate the ecotoxicological risk due to BPA and caffeine in water samples from the Sinos River basin, Rio Grande do Sul, Brazil. Water samples were collected at three sites monthly from May 9 th, 2016 to April 11th, 2017 (n = 36). BPA concentrations in water samples collected were in the range of not detected to 517 ng L-1 and caffeine concentrations in the range of 41.7 to 28,439.6 ng L-1. The concentration of BPA in the analyzed samples had a moderate correlation with caffeine (rs = 0.402). High ecotoxicological risk for BPA was characterized in 77.77% of samples, with 11.11% presenting medium and 11.1% presenting low risk. For caffeine 13.9%, 50% and 36.11% of the samples presented high, medium and low risk, respectively. Caffeine concentrations in water can be used as predictors of BPA concentrations above 10 ng L-1, the lower concentration of ecotoxicological risk, with specificity of 66.7% and sensitivity of 70.4%. The assessment of aquatic risks has shown that both investigated compounds pose risks to organisms in the studied surface waters, mouth of the Pampa stream, mouth of the Luiz Rau stream and catchment point for public supply in Lomba Grande.
DOI: 10.6084/m9.figshare.8031143.v1
title: Preoperative computed tomography evaluation of the paranasal sinuses: what should the physician know? - pictorial essay

description: Abstract The introduction of functional endoscopic sinus surgery in the 1980s brought about a drastic change in the treatment of patients with rhinosinusitis, improving quality of life through the removal of pathological processes or anatomical variations that obstruct the drainage pathways of the paranasal sinuses. However, despite the routine use of computed tomography in the anatomical evaluation of the paranasal sinuses, most radiological reports still do not provide sufficient information to guide the surgical planning. The objective of this pictorial essay was to demonstrate, through computed tomography, the main anatomical variations of the paranasal sinuses, the recognition of which is fundamental for preoperative planning, in order to avoid treatment failure and iatrogenic complications.
DOI: 10.6084/m9.figshare.8031146.v1
title: SOCIAL CLASSES AND FOOD: PATTERNS OF FOOD CONSUMPTION IN BRAZIL TODAY

description: The social stratification of food consumption is the main empirical object of this paper. It aims to investigate the possible homology between the practices in the field of food consumption, on the one hand, and the relative positions in social space occupied by social agents, on the other hand. Therefore, such an investigation may be included in a set of studies influenced by Pierre Bourdieu’s sociology of class, which the matizes the symbolic dimensional of class relations. Secondarily, this paper attempts to further our understanding of the mechanisms of social reproduction, especially regarding the role of lifestyles in the production and reproduction of inequalities and symbolic hierarchies.
DOI: 10.6084/m9.figshare.8031125
title: Levels of anxiety and depression among early childhood education and primary education teachers

description: Abstract Teaching nowadays has become a profession, which leads to illness. Taking this aspect into consideration, the aim of this article is to verify teachers’ levels of anxiety and depression and their possible association to the level of satisfaction at work and factual data such as age, educational level and religiousness. To do so, 150 professionals teachers, who taught Public Early Years Education and Primary Education levels in a school in the state of São Paulo, were given a questionnaire, based on the Beck Scales (depression and anxiety) on the factual data and work satisfaction and it could be seen that 50% of the subjects presented levels of anxiety and/or depression which were harmful to the educational act. Thus it was possible to conclude that it is necessary to promote educational policies that take teachers’ mental health into account.
DOI: 10.6084/m9.figshare.8031131
title: Calcium phosphate submicrometric fibers produced by solution blow spinning

description: The purpose of this work was to produce submicrometric hydroxyapatite (HA) and beta-tricalcium phosphate (β-TCP) biphasic fibers by means of solution blow spinning (SBS). This method was chosen due to its lower cost and higher production rate than those of electrospinning, which is normally employed in ceramic fiber production. The fibers thus obtained were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The in vitro bioactivity and cytotoxicity of the fibers were also investigated. The XRD patterns indicated the formation of biphasic HA/βTCP fibers. SEM analysis revealed an interconnected cylindrical morphology with the presence of beads. Fiber diameters in the submicrometric range varied from 374 to 451 nm. TGA results indicated that organic losses occurred solely below 600ºC. All the fibers were non-cytotoxic, presenting an inhibitory concentration (IC) of &gt; IC50. All the samples successfully formed acicular apatite layers when immersed in SBF, indicating a high potential for in vivo bone bioactivity.