cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9796211
title: International migration: an alternative to the impacts of demographic changes in Brazil?

description: Abstract Demographic transition brings innumerable transformations in age structure, one of them being population ageing. In Brazil, it is estimated that 22.6% of the population will be 65 years of age, and older, by 2050, in a similar scenario to that of developed countries. Given these changes, the limitations and potentials of migration are discussed as a possible way to address the situation. On the one hand, immigrants can become part of the active working-age population, constituting an important part of the future Brazilian workforce. On the other hand, it raises concern about the country absorbing foreigners, who will also age, thus increasing the weight of the older ages. In this context, the term "replacement migration" refers to the migratory process with demographic intent related to population size and structure. Therefore, in order to analyze the impact of the migratory component on Brazilian age structure up to the year 2050, demographic projections were prepared from scenarios based on the Demographic Component Method. The scenarios which aimed to decrease dependency ratio or were based on net migration rates of migrant recipient countries, such as Germany, were the ones which resulted in more reasonable migratory balances.
DOI: 10.6084/m9.figshare.9796214.v1
title: Sorption isotherms of Brazil nuts

description: ABSTRACT Knowledge of the water sorption phenomenon in Brazil nut seeds will allow proper handling of this product, especially with regard to adequate conditions for safe storage. Thus, the present study aimed to determine the sorption isotherms (desorption and adsorption) of Brazil nuts, fitting different mathematical models to the experimental data, as well as to examine the hysteresis effect. To obtain the sorption isotherms, the static method was employed at temperatures of 25, 35, 45 and 55 °C and air relative humidities varying from 10 to 80%. The psychrometric conditions of the air were acquired with the aid of acid solutions and specific saturated saline left inside desiccators with the samples. It was verified that for a given isotherm, the equilibrium moisture content of Brazil nuts increases with water activity increment. In addition, at a constant water activity, equilibrium moisture content decreases with temperature increase. The Copace, Henderson and Oswin are the models that best describe the hygroscopicity of the Brazil nut seed for both the adsorption and desorption processes. Hysteresis was more pronounced at lower temperatures and higher values of water activity. The moisture content value for storage at temperatures less than 55 °C, without the risk of fungal development, must be lower than 8.2% (d.b.).
DOI: 10.6084/m9.figshare.9796205
title: International road transport of dangerous goods

description: Abstract This article analyzes the cargoes transported in South American countries on international highways, identifying the risks that can occur, which trigger impacts to the environment and damage the ecosystem of our planet. Legislation pertinent to the theme, as well as the environmental regulations of Chile, Argentina and Paraguay, and all the regulations of the Brazilian Association of Technical Standards - ABNT related to this theme are presented. In this context, the appropriate individual protection equipment that must be used by the drivers, the classification of dangerous products and the necessary requirements for the driver who will transport them - are identified. The results highlight the irregularities in the transport of dangerous cargoes, if mitigation of this problem is not done, through what is presented in the final considerations.
DOI: 10.6084/m9.figshare.9796211.v1
title: International migration: an alternative to the impacts of demographic changes in Brazil?

description: Abstract Demographic transition brings innumerable transformations in age structure, one of them being population ageing. In Brazil, it is estimated that 22.6% of the population will be 65 years of age, and older, by 2050, in a similar scenario to that of developed countries. Given these changes, the limitations and potentials of migration are discussed as a possible way to address the situation. On the one hand, immigrants can become part of the active working-age population, constituting an important part of the future Brazilian workforce. On the other hand, it raises concern about the country absorbing foreigners, who will also age, thus increasing the weight of the older ages. In this context, the term "replacement migration" refers to the migratory process with demographic intent related to population size and structure. Therefore, in order to analyze the impact of the migratory component on Brazilian age structure up to the year 2050, demographic projections were prepared from scenarios based on the Demographic Component Method. The scenarios which aimed to decrease dependency ratio or were based on net migration rates of migrant recipient countries, such as Germany, were the ones which resulted in more reasonable migratory balances.
DOI: 10.6084/m9.figshare.9796208.v1
title: Predictors of Unfavourable Outcomes in Children and Adolescents Submitted to Surgical Mitral Valvuloplasty Secondary to Chronic Rheumatic Heart Disease

description: Abstract Background: Mitral valve repair in paediatric patients with chronic rheumatic heart disease is superior to valve replacement and has been used with good results. Objective: To identify predictors of unfavourable outcomes in children and adolescents submitted to surgical mitral valvuloplasty secondary to rheumatic heart disease. Methods: Retrospective study of 54 patients under the age of 16 operated at a tertiary paediatric hospital between March 2011 and January 2017. The predictors of risk for unfavourable outcomes were: age, ejection fraction, degree of mitral insufficiency, degree of pulmonary hypertension, presence of tricuspid insufficiency, left chamber dilation, preoperative functional classification, duration of cardiopulmonary bypass, duration of anoxia, presence of atrial fibrillation, and duration of vasoactive drug use. The outcomes evaluated were: death, congestive heart failure, reoperation, residual mitral regurgitation, residual mitral stenosis, stroke, bleeding and valve replacement. For all analyzes a value of p &lt; 0.05 was established as significant. Results: Of the patients evaluated, 29 (53.7%) were female, with an average of 10.5 ± 3.2 years. The functional classification of 13 patients (25%) was 4. There was no death in the sample studied. The average duration of extracorporeal circulation was 62.7±17.8 min, and anoxia 50 ± 15.7 min. The duration of use of vasoactive drug in the immediate postoperative period has an average of 1 day (interquartile interval 1-2 days). The logistic regression model was used to evaluate the predictive variables for each unfavourable outcome. The duration of use of vasoactive drug was the only independent predictor for the outcomes studied (p = 0.007). Residual mitral insufficiency was associated with reoperation (p = 0.044), whereas tricuspid insufficiency (p = 0.012) and pulmonary hypertension (p = 0.012) were associated with the presence of unfavourable outcomes. Conclusion: The duration of vasoactive drug use is an independent predictor for unfavourable outcomes in the immediate and late postoperative period, while residual mitral regurgitation was associated with reoperation, and both tricuspid regurgitation and pulmonary hypertension were associated with unfavourable outcomes.
DOI: 10.6084/m9.figshare.9796193
title: Tourism flows between the countries of the Biocean Highroad Crossing

description: Abstract: The objective of this article was to analyze the flow of tourists among the countries of the Bioceanic Route. In this study, a quantitative analysis was used to investigate the international demand for tourism between Brazil, Argentina, Paraguay and Chile. As the Bioceanic Route is still an aspiration under construction, literature is scarce and this study presents itself as a pioneer. The results indicate that the traditional variables of demand, arrival of tourists, forms of travel, international events and arrivals in Mato Grosso do Sul presented an overview of the flow, which is incipient and with little integration between countries. The creation of the Bioceanic Route can contribute to the development of countries, especially in the area of tourism that is dynamic and growing in the world, and still little explored in South America.
DOI: 10.6084/m9.figshare.9796205.v1
title: International road transport of dangerous goods

description: Abstract This article analyzes the cargoes transported in South American countries on international highways, identifying the risks that can occur, which trigger impacts to the environment and damage the ecosystem of our planet. Legislation pertinent to the theme, as well as the environmental regulations of Chile, Argentina and Paraguay, and all the regulations of the Brazilian Association of Technical Standards - ABNT related to this theme are presented. In this context, the appropriate individual protection equipment that must be used by the drivers, the classification of dangerous products and the necessary requirements for the driver who will transport them - are identified. The results highlight the irregularities in the transport of dangerous cargoes, if mitigation of this problem is not done, through what is presented in the final considerations.
DOI: 10.6084/m9.figshare.9796187
title: Micromorphology and Genesis of Soils from Topolitosequences in the Brazilian Central Plateau

description: ABSTRACT The micromorphology of deeply weathered soils (Ferralsols/ Latossolos ) from the Central Plateau of Brazil remains little studied, and its affiliation to different parent materials, poorly known. To clarify the processes of soil formation of these acric, gibbsitic, Fe-oxide rich Ferralsols, three lithotoposequences on local ultrabasic to basic intrusive rocks were studied. The influences of mixing and pedobioturbation are evident in all soils, and Ferralsols of the Central Plateau of Brazil are polygenetic, based on the coarse mineral composition, with ultrabasic and metapelitic rock contributions. The typical oxic microstructure with stable microaggregates encompasses a gibbsite/Fe rich micromass with random inclusions of charcoal, allochthonous quartz, Ti-magnetite, and perovskite grains. Shallow Cambisols ( Cambissolos ) on tuffites also display a similar “oxic” microstructure, but a much lower degree of weathering. These Cambisols possesses apatite, and mafic and pelitic minerals as residuals minerals grains, indicating the polygenetic colluvia mixture of different substrates. The common occurrence of perovskite (CaTiO3) as a residual grain in deep-weathered, acric Ferralsols on ultrabasic rocks, not yet reported in the literature, shows an unusual resistant Ca reserve in oxic soils, though nothing is known about its implications to soil fertility.
DOI: 10.6084/m9.figshare.9796193.v1
title: Tourism flows between the countries of the Biocean Highroad Crossing

description: Abstract: The objective of this article was to analyze the flow of tourists among the countries of the Bioceanic Route. In this study, a quantitative analysis was used to investigate the international demand for tourism between Brazil, Argentina, Paraguay and Chile. As the Bioceanic Route is still an aspiration under construction, literature is scarce and this study presents itself as a pioneer. The results indicate that the traditional variables of demand, arrival of tourists, forms of travel, international events and arrivals in Mato Grosso do Sul presented an overview of the flow, which is incipient and with little integration between countries. The creation of the Bioceanic Route can contribute to the development of countries, especially in the area of tourism that is dynamic and growing in the world, and still little explored in South America.
DOI: 10.6084/m9.figshare.9796178
title: Aerobic exercise repairs neurological function after cerebral ischaemia by regulating the nitric oxide

description: Abstract: To investigate the mechanism of different exercise patterns on neurological function after focal cerebral ischaemia in rats. Rats with focal cerebral cerebral ischaemia were randomly divided into an aerobic exercise group, an exhaustive exercise group and a control group, with 8 rats in each group. A score for nerve function in each group was calculated, and the ultrastructure of nerve cells was observed. Levels of NO and NOS in the brain motor area of the rats were measured in each group. The aerobic exercise group had lower nerve function scores than the exhaustive exercise group and higher scores than the control group (P&lt;0.05). Under transmission electron microscopy, irregular shapes and organs were observed in nerve cells in the control group, while regular cell shapes and organs were observed in the aerobic exercise group. The aerobic exercise group and exhaustive exercise group had higher measures of NO content, NOS activity and eNOS, nNOS and iNOS gene expression than the control group, but eNOS expression in the aerobic exercise group and iNOS expression in the exhaustive exercise group were clearly higher according to RT-PCR (P&lt;0.05). Aerobic exercise can promote the expression of NOS, mainly in eNOS, which can promote nerve repair.
DOI: 10.6084/m9.figshare.9796187.v1
title: Micromorphology and Genesis of Soils from Topolitosequences in the Brazilian Central Plateau

description: ABSTRACT The micromorphology of deeply weathered soils (Ferralsols/ Latossolos ) from the Central Plateau of Brazil remains little studied, and its affiliation to different parent materials, poorly known. To clarify the processes of soil formation of these acric, gibbsitic, Fe-oxide rich Ferralsols, three lithotoposequences on local ultrabasic to basic intrusive rocks were studied. The influences of mixing and pedobioturbation are evident in all soils, and Ferralsols of the Central Plateau of Brazil are polygenetic, based on the coarse mineral composition, with ultrabasic and metapelitic rock contributions. The typical oxic microstructure with stable microaggregates encompasses a gibbsite/Fe rich micromass with random inclusions of charcoal, allochthonous quartz, Ti-magnetite, and perovskite grains. Shallow Cambisols ( Cambissolos ) on tuffites also display a similar “oxic” microstructure, but a much lower degree of weathering. These Cambisols possesses apatite, and mafic and pelitic minerals as residuals minerals grains, indicating the polygenetic colluvia mixture of different substrates. The common occurrence of perovskite (CaTiO3) as a residual grain in deep-weathered, acric Ferralsols on ultrabasic rocks, not yet reported in the literature, shows an unusual resistant Ca reserve in oxic soils, though nothing is known about its implications to soil fertility.
DOI: 10.6084/m9.figshare.9796169
title: Development and validation of a data logger for thermal characterization in laying hen facilities

description: ABSTRACT The environmental monitoring in animal facilities that includes collected data storage in a robust, practical and feasible way is a constant challenge. The aim of this study was to develop a reliable data logger for monitoring the air temperature and air relative humidity of aviaries and to assess the adequacy of the design using commercially available reference standard instruments. The experimental data logger was installed together with a commercial data logger, a mercury thermometer and a calibrated Vaisala HMP110 air relative humidity probe in a meteorological shelter. Linear regression analysis was performed with the collected air temperature and air relative humidity to develop calibration equations. The Nash-Sutcliffe Index and the relative error were calculated to validate the experimental data logger. The air temperature and the air relative humidity calibration equations presented Nash-Sutcliffe of 0.993 and -0.281 for the commercial data logger, and 0.913 and 0.932 for the experimental data. The mean relative error of the air temperature readings was 3 and 1% and for air relative humidity 5 and 20%, for the experimental and commercial logger, respectively. The experimental data logger reliably stored all collected data without error to the micro-SD card. The experimental data logger can be considered low-cost and sufficiently accurate for monitoring air temperature and air relative humidity in aviaries, presenting field performance very close to the commercial data logger for air temperature measurement, and better performance than the commercial data logger for the measurement of air relative humidity.
DOI: 10.6084/m9.figshare.9796172
title: An Anchorage System for Enhanced Bond Behavior between Carbon Fiber Reinforced Polymer Sheets and Cracked Concrete

description: Abstract The contribution of CFRP wraps, as an anchorage system, to enhancing bond behavior between CFRP sheet and cracked concrete, was investigated. Thirty six concrete blocks (150 x 150 x 200 mm) were cast with 3ϕ12 mm steel bars embedded laterally at different spacing along the 200-mm-dimension. Half of the moist-cured blocks were subjected to a cyclic treatment in 3% chloride solution until reinforced sides cracked at an average global crack size 0.54 mm; the remaining ones were immersed in a lime solution for a similar period, as controls. Finally, the blocks were attached at their reinforced surface to CFRP sheets at different bond widths and lengths with CFRP wrap anchorages applied over portions where high shearing stresses persist during pull-off testing. The results indicate that the physical status of concrete, the geometry of main CFRP sheets, and the extension of CFRP wrap anchorage are major factors that shape the benefit from the proposed anchorage technique. Empirical models, developed to predict bond strength and slippage at ultimate stress, show very good predictability of literature data.
DOI: 10.6084/m9.figshare.9796166
title: Relief Position and Soil Properties under Continuous Banana Cropping in Subhumid Climate in Northeast Brazil

description: ABSTRACT Sequences of thick and eroded soils in hills surfaces are cultivated with banana since the beginning of the last century in the Northeast of Pernambuco (PE), Brazil. Measurements of soil properties depending on soil slope under intensive agricultural cultivation are limited mostly as the pedogenetic approach. This study aimed to identify the dominant soil types, to evaluate morphological, physical, chemical, and mineralogical properties of soil profiles, and link them to the relief position under continuous banana cropping, in the transition Mata-Agreste of PE. Three slope classes and soil profiles were considered: Profile 1 (P1), upper third of the elevation slope; Profile 2 (P2), middle third of the slope; and Profile 3 (P3) lower third. They were opened, described, and soil samples collected from all horizons at a typical slope of the region. Independent of relief position and land use, all soils are deep (&gt;1.50 m) and present the argic horizons (Bt) developed in all steeply sloping surfaces (15-33 %). The Bt horizon presented the highest values of soil bulk density and microporosity. Despite the presence of illite, all the soil profiles showed remarkable degree weathering, are mostly kaolinitic, besides presenting goethite and quartz in the soil clay fraction, and predominance of quartz in the silt and sand fraction. Water-stable aggregates &gt;2 mm were dominant in all the relief positions. Acidity, low cation exchange capacity, and in general, nutrient poverty were observed in the soil profiles, as opposed accumulation of exchangeable cations on the lower third of the slope (P3). However, the soil properties were affected by land use and water erosion. The Ap horizons showed the highest values of pH, exchangeable bases, phosphorus available, and organic carbon due to agricultural practices, while the steepest slope (P2) had the lowest content of clay, phosphorus and mean weight diameter of aggregates, and higher organic carbon content, in the superficial horizon, due to removal and deposition by water erosion. From the upper third to the lower third of the slope, Nitic Acrisol, Haplic Acrisol, and Nitic Lixisol were formed.
DOI: 10.6084/m9.figshare.9796172.v1
title: An Anchorage System for Enhanced Bond Behavior between Carbon Fiber Reinforced Polymer Sheets and Cracked Concrete

description: Abstract The contribution of CFRP wraps, as an anchorage system, to enhancing bond behavior between CFRP sheet and cracked concrete, was investigated. Thirty six concrete blocks (150 x 150 x 200 mm) were cast with 3ϕ12 mm steel bars embedded laterally at different spacing along the 200-mm-dimension. Half of the moist-cured blocks were subjected to a cyclic treatment in 3% chloride solution until reinforced sides cracked at an average global crack size 0.54 mm; the remaining ones were immersed in a lime solution for a similar period, as controls. Finally, the blocks were attached at their reinforced surface to CFRP sheets at different bond widths and lengths with CFRP wrap anchorages applied over portions where high shearing stresses persist during pull-off testing. The results indicate that the physical status of concrete, the geometry of main CFRP sheets, and the extension of CFRP wrap anchorage are major factors that shape the benefit from the proposed anchorage technique. Empirical models, developed to predict bond strength and slippage at ultimate stress, show very good predictability of literature data.
DOI: 10.6084/m9.figshare.9796178.v1
title: Aerobic exercise repairs neurological function after cerebral ischaemia by regulating the nitric oxide

description: Abstract: To investigate the mechanism of different exercise patterns on neurological function after focal cerebral ischaemia in rats. Rats with focal cerebral cerebral ischaemia were randomly divided into an aerobic exercise group, an exhaustive exercise group and a control group, with 8 rats in each group. A score for nerve function in each group was calculated, and the ultrastructure of nerve cells was observed. Levels of NO and NOS in the brain motor area of the rats were measured in each group. The aerobic exercise group had lower nerve function scores than the exhaustive exercise group and higher scores than the control group (P&lt;0.05). Under transmission electron microscopy, irregular shapes and organs were observed in nerve cells in the control group, while regular cell shapes and organs were observed in the aerobic exercise group. The aerobic exercise group and exhaustive exercise group had higher measures of NO content, NOS activity and eNOS, nNOS and iNOS gene expression than the control group, but eNOS expression in the aerobic exercise group and iNOS expression in the exhaustive exercise group were clearly higher according to RT-PCR (P&lt;0.05). Aerobic exercise can promote the expression of NOS, mainly in eNOS, which can promote nerve repair.