cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7244978.v1
title: Genetic Testing and Pregnancy Outcome Analysis of 362 Fetuses with Congenital Heart Disease Identified by Prenatal Ultrasound

description: Abstract Background: Congenital heart defects (CHD), as the most common congenital anomaly, have been reported to be associated with chromosomal abnormalities. Currently, patients with CHD are routinely offered karyotyping and chromosomal microarray (CMA) testing, but the genotype-phenotype relationship has not yet been fully established. Objective: To determine the type and frequency of chromosomal abnormalities in fetuses with CHD and to analyze pregnancy outcomes of fetuses with heart abnormalities caused by different genetic factors. Methods: A total of 362 cases of CHD were enrolled from 2009 to 2016. Detailed ultrasound and laboratory examinations, including karyotyping and CMA, were performed. Outcome was obtained from discharge summaries. Results: Of the 362 fetuses, 220 were found with an isolated CHD, and 142 had CHD with extracardiac anomaly. Among these 362 fetuses, 140 were identified with a genetic cause, including 111 cases with aneuploidy, 10 cases with abnormality of chromosomal structure by karyotyping and 19 cases with pathogenic or likely pathogenic copy-number variations (CNVs) by CMA. The detection rate is close to 38.7%. Only one (identified as trisomy 18 syndrome) in 140 positive cases resulted in perinatal death, with the others being induced. The remaining 222 cases had negative results for both genetic testing and of these cases, 56 resulted in induced labor, and 77 had natural childbirth or caesarean births. The pregnancy outcome of the remaining 89 cases was uncertain. Conclusions: Karyotyping and CMA are effective and accurate prenatal genetic techniques for identifying fetal chromosomal abnormalities associated with cardiac defects, and this can assist clinical doctors to perform appropriate genetic counselling with regard to the etiology and outcome of CHD.
DOI: 10.6084/m9.figshare.7244975
title: Comparison between the Vicat test and the semi-adiabatic calorimetry to determine the set time of Portland cements

description: ABSTRACT The objective of this work was to compare two methods (Vicat needle and semi-adiabatic calorimeter) to determine the cement set times. Ten samples of the 2 largest used types of cement were collected in the brazil’s southern region of the same manufacturing unit during the same month. It was verified that the semiadiabatic calorimetry method is an efficient, practical and simple technique to monitor the behavior of the cement hydration process and to provide results with times varying 1.50% (4 minutes) for the CP II F-40 and 6.28% (14 minutes) for CP V ARI-RS. This difference in results may be explained by some inaccuracy during the Vicat needle methods, or the need for a greater number of replicates of both methods to work with approximate mean values. The size of the samples tested also makes it impossible to apply the curves presented in this work as behavioral pattern for the studied cements, since there is variability of composition between each batch and each manufacturer.
DOI: 10.6084/m9.figshare.7244972
title: Boundary Layer Effects in a Finite Linearly Elastic Peridynamic Bar

description: Abstract The peridynamic theory is an extension of the classical continuum mechanics theory. The peridynamic governing equations involve integrals of interaction forces between near particles separated by finite distances. These forces depend upon the relative displacements between material points within a body. On the other hand, the classical governing equations involve the divergence of a tensor field, which depends upon the spatial derivatives of displacements. Thus, the peridynamic governing equations are valid not only in the interior of a body, but also on its boundary, which may include a Griffith crack, and on interfaces between two bodies with different mechanical properties. Near the boundary, the solution of a peridynamic problem may be very different from the classical solution. In this work, we investigate the behavior of the displacement field of a unidimensional linearly elastic bar of length L near its ends in the context of the peridynamic theory. The bar is in equilibrium without body force, is fixed at one end, and is subjected to an imposed displacement at the other end. The bar has micromodulus C, which is related to the Young's modulus E in the classical theory and is given by different expressions found in the literature. We find that, depending on the expression of C, the displacement field may be singular near the ends, which is in contrast to the linear behavior of the displacement field observed in the classical linear elasticity. In spite of the above, we show that the peridynamic displacement field converges to its classical counterpart as a length scale, called peridynamic horizon, tends to zero.
DOI: 10.6084/m9.figshare.7244975.v1
title: Comparison between the Vicat test and the semi-adiabatic calorimetry to determine the set time of Portland cements

description: ABSTRACT The objective of this work was to compare two methods (Vicat needle and semi-adiabatic calorimeter) to determine the cement set times. Ten samples of the 2 largest used types of cement were collected in the brazil’s southern region of the same manufacturing unit during the same month. It was verified that the semiadiabatic calorimetry method is an efficient, practical and simple technique to monitor the behavior of the cement hydration process and to provide results with times varying 1.50% (4 minutes) for the CP II F-40 and 6.28% (14 minutes) for CP V ARI-RS. This difference in results may be explained by some inaccuracy during the Vicat needle methods, or the need for a greater number of replicates of both methods to work with approximate mean values. The size of the samples tested also makes it impossible to apply the curves presented in this work as behavioral pattern for the studied cements, since there is variability of composition between each batch and each manufacturer.
DOI: 10.7284/135020
title: GNSS (Global Navigation Satellite System) data collected during research cruise SKQ201905S using a C&C C-Nav 3050 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244969
title: EXPLORING CORTICAL BONE DENSITY THROUGH THE ULTRASOUND INTEGRATED REFLECTION COEFFICIENT

description: ABSTRACT Objective: This work evaluates the relationship between ultrasonic reflection and bone density from fourteen cylindrical bovine cortical bone samples (3.0-cm thick). Methods: Twenty US reflection signals per sample were acquired along the bone surface (2.0-mm step). The Integrated Reflection Coefficient (IRC) from each signal was compared to Quantitative Computed Tomography (QCT). Results: Seven IRC and QCT curves presented Pearson's Correlation R-values above 0.5. For weak correlation curves, QCT and IRC showed similar trends in several segments. Conclusion: IRC was sensitive to bone density variation. Level of Evidence: Experimental Study, Investigating a Diagnostic Test.
DOI: 10.6084/m9.figshare.7244972.v1
title: Boundary Layer Effects in a Finite Linearly Elastic Peridynamic Bar

description: Abstract The peridynamic theory is an extension of the classical continuum mechanics theory. The peridynamic governing equations involve integrals of interaction forces between near particles separated by finite distances. These forces depend upon the relative displacements between material points within a body. On the other hand, the classical governing equations involve the divergence of a tensor field, which depends upon the spatial derivatives of displacements. Thus, the peridynamic governing equations are valid not only in the interior of a body, but also on its boundary, which may include a Griffith crack, and on interfaces between two bodies with different mechanical properties. Near the boundary, the solution of a peridynamic problem may be very different from the classical solution. In this work, we investigate the behavior of the displacement field of a unidimensional linearly elastic bar of length L near its ends in the context of the peridynamic theory. The bar is in equilibrium without body force, is fixed at one end, and is subjected to an imposed displacement at the other end. The bar has micromodulus C, which is related to the Young's modulus E in the classical theory and is given by different expressions found in the literature. We find that, depending on the expression of C, the displacement field may be singular near the ends, which is in contrast to the linear behavior of the displacement field observed in the classical linear elasticity. In spite of the above, we show that the peridynamic displacement field converges to its classical counterpart as a length scale, called peridynamic horizon, tends to zero.
DOI: 10.6084/m9.figshare.7244969.v1
title: EXPLORING CORTICAL BONE DENSITY THROUGH THE ULTRASOUND INTEGRATED REFLECTION COEFFICIENT

description: ABSTRACT Objective: This work evaluates the relationship between ultrasonic reflection and bone density from fourteen cylindrical bovine cortical bone samples (3.0-cm thick). Methods: Twenty US reflection signals per sample were acquired along the bone surface (2.0-mm step). The Integrated Reflection Coefficient (IRC) from each signal was compared to Quantitative Computed Tomography (QCT). Results: Seven IRC and QCT curves presented Pearson's Correlation R-values above 0.5. For weak correlation curves, QCT and IRC showed similar trends in several segments. Conclusion: IRC was sensitive to bone density variation. Level of Evidence: Experimental Study, Investigating a Diagnostic Test.
DOI: 10.7284/135018
title: Gravimeter data collected during research cruise SKQ201905S using a Bell BGM-3 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244963
title: Regression models applied in the characterization of lightweight mortar with EVA and piassava fibers

description: ABSTRACT The civil construction has great potential for recycling other industries residues using these materials as aggregates. The EVA residue (Ethylene Vinyl Acetate) has been used in lightweight mortar production using piassava vegetable fibers (Attalea funifera Martius) as reinforcement. In this work, we build mathematical models to simulate the mechanical properties as compressive strength, tensile strength and modulus of elasticity for mortar with unconventional aggregates of EVA and piassava fibers. We used a polynomial regression model with three explanatory variables to describe each mechanical property, using as independent variables the EVA and fiber percentages in the mixture and also the water/cement ratio. The goodness of fit was measured through hypothesis tests, and statistical criteria’s as Shapiro-Wilk, Durbin-Watson, Breusch-Pagan, the coefficient of determination (R2), and the PRESS statistic. The results allow us to affirm the constructed models reproduce the material behavior. Using the proposed models and simulation techniques, it was found that the piassava fibers can be used as reinforcement elements in the tensile strength and modulus of elasticity for mortars. In addition, we calculate an optimum ratio between aggregates to obtain maximum resistance.
DOI: 10.6084/m9.figshare.7244966
title: Analysis of generation and characterization of construction and demolition waste on construction sites in the city of Recife, Brazil

description: ABSTRACT In order to planning the Construction and Demolition Waste (CDW) management approach on a construction site, it is necessary to have a prior knowledge of what is being generated (qualitative analysis), the quantity that is being generated (quantitative analysis), and what is the proper final destination assigned to this material. This article proposes a new method to estimate CDW generation in Brazil from a qualitative and quantitative analysis of CDW generation in worksites. For the waste characterization, it was used the compression test with energy of Standard Proctor Test, granulometric analysis, microstructure analysis and direct shear tests. For the quantitative data collection, the research was limited to worksites of residential or commercial multi-story buildings, with reinforced concrete structure, which is the most common type used in Brazil. The data on the number of waste bins removed monthly, transportation and final disposal, CDW management costs, and constructive process were obtained from the construction companies.
DOI: 10.6084/m9.figshare.7244960
title: Reduction of crude protein in diets fed to lactating Holstein-Gyr cows

description: Abstract: The objective of this work was to evaluate the effect of reducing crude protein (CP) contents in diets with a constant metabolizable protein content on the intake, performance, nitrogen balance, and nutrient digestibility of lactating Holstein-Gyr cows. Animals (n = 24, 103±23 days in milk) were allocated to four treatments (n = 6 per group) with different CP contents: 127, 132, 139, and 156 g kg-1 dry matter (DM). DM intake was not affected by treatments. CP intake and digestibility increased linearly with higher CP contents. Milk yield (23.7±3 kg per day) and the percentages of milk protein (3.3±0.2%) and fat (3.8±0.5%) were not affected by CP reduction. Milk and blood urea nitrogen increased linearly with the increase of CP in the diet, similarly to urinary nitrogen excretion. Nitrogen use efficiency was 29.8 and 22.4% when CP was 127 and 156 g kg-1 DM, respectively. Reducing CP in diets fed to mid-lactating Holstein-Gyr cows increases nitrogen use efficiency and maintains the productive performance of the cows.
DOI: 10.6084/m9.figshare.7244963.v1
title: Regression models applied in the characterization of lightweight mortar with EVA and piassava fibers

description: ABSTRACT The civil construction has great potential for recycling other industries residues using these materials as aggregates. The EVA residue (Ethylene Vinyl Acetate) has been used in lightweight mortar production using piassava vegetable fibers (Attalea funifera Martius) as reinforcement. In this work, we build mathematical models to simulate the mechanical properties as compressive strength, tensile strength and modulus of elasticity for mortar with unconventional aggregates of EVA and piassava fibers. We used a polynomial regression model with three explanatory variables to describe each mechanical property, using as independent variables the EVA and fiber percentages in the mixture and also the water/cement ratio. The goodness of fit was measured through hypothesis tests, and statistical criteria’s as Shapiro-Wilk, Durbin-Watson, Breusch-Pagan, the coefficient of determination (R2), and the PRESS statistic. The results allow us to affirm the constructed models reproduce the material behavior. Using the proposed models and simulation techniques, it was found that the piassava fibers can be used as reinforcement elements in the tensile strength and modulus of elasticity for mortars. In addition, we calculate an optimum ratio between aggregates to obtain maximum resistance.
DOI: 10.7284/135021
title: Gyrocompass data collected during research cruise SKQ201905S using a Sperry NAVIGAT 2100 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244957
title: Thermal profiles in pervious concrete during summer rain simulations

description: ABSTRACT Pervious concrete pavement systems may have many environmental benefits including the mitigation of heat island impacts. This mitigation is a complex combination of pervious concrete’s insulating capability and its ability to store water which may provide evaporative cooling. However, the introduction of water may also bring heat into the system, where the system is the pervious concrete pavement layer over an underground aggregate bed for retention and/or detention of stormwater. This study involved three different mix design placements in southern Brazil on a hot sunny summer day. The experiment had a control section and two test spots where controlled artificial rain events were introduced at two times during the afternoon for each of the three placement types. The ‘rain’ initially brought heat from the surface into the pervious concrete layer. Subsequent evaporation cooled these interior pavement layers to levels similar to the control locations. This introduction of water into pervious concrete with very hot surface temperatures in the heat of the day is expected to be a severe condition for adding heat to the system through the flow of water. If water additions are made at different diurnal times, such as nighttime rain, they may provide similar evaporative benefits with less heat transfer into the system via the water phase, and thus even more cooling of the system. These experiments reinforce the conclusion that pervious concrete may be a cool pavement during summer conditions, even under extreme conditions when surface heated stormwater enters the system.
DOI: 10.6084/m9.figshare.7244957.v1
title: Thermal profiles in pervious concrete during summer rain simulations

description: ABSTRACT Pervious concrete pavement systems may have many environmental benefits including the mitigation of heat island impacts. This mitigation is a complex combination of pervious concrete’s insulating capability and its ability to store water which may provide evaporative cooling. However, the introduction of water may also bring heat into the system, where the system is the pervious concrete pavement layer over an underground aggregate bed for retention and/or detention of stormwater. This study involved three different mix design placements in southern Brazil on a hot sunny summer day. The experiment had a control section and two test spots where controlled artificial rain events were introduced at two times during the afternoon for each of the three placement types. The ‘rain’ initially brought heat from the surface into the pervious concrete layer. Subsequent evaporation cooled these interior pavement layers to levels similar to the control locations. This introduction of water into pervious concrete with very hot surface temperatures in the heat of the day is expected to be a severe condition for adding heat to the system through the flow of water. If water additions are made at different diurnal times, such as nighttime rain, they may provide similar evaporative benefits with less heat transfer into the system via the water phase, and thus even more cooling of the system. These experiments reinforce the conclusion that pervious concrete may be a cool pavement during summer conditions, even under extreme conditions when surface heated stormwater enters the system.
DOI: 10.6084/m9.figshare.7244960.v1
title: Reduction of crude protein in diets fed to lactating Holstein-Gyr cows

description: Abstract: The objective of this work was to evaluate the effect of reducing crude protein (CP) contents in diets with a constant metabolizable protein content on the intake, performance, nitrogen balance, and nutrient digestibility of lactating Holstein-Gyr cows. Animals (n = 24, 103±23 days in milk) were allocated to four treatments (n = 6 per group) with different CP contents: 127, 132, 139, and 156 g kg-1 dry matter (DM). DM intake was not affected by treatments. CP intake and digestibility increased linearly with higher CP contents. Milk yield (23.7±3 kg per day) and the percentages of milk protein (3.3±0.2%) and fat (3.8±0.5%) were not affected by CP reduction. Milk and blood urea nitrogen increased linearly with the increase of CP in the diet, similarly to urinary nitrogen excretion. Nitrogen use efficiency was 29.8 and 22.4% when CP was 127 and 156 g kg-1 DM, respectively. Reducing CP in diets fed to mid-lactating Holstein-Gyr cows increases nitrogen use efficiency and maintains the productive performance of the cows.
DOI: 10.6084/m9.figshare.7244954
title: Seed quality response of Urochloa humidicola cv. Llanero to drying surfaces and environments1

description: ABSTRACT The drying process and storage may interfere in the quality of creeping signalgrass seeds [Urochloa humidicola (Rendle.) Morrone & Zuloago, syn. Brachiaria humidicola (Rendle.) Schweick.]. This study aimed to evaluate the physical, physiological and sanitary quality of creeping signalgrass cv. Llanero seeds submitted to drying surfaces and environments and stored for two periods (1 and 8 months). The experiment was arranged in a completely randomized design, in a 4 × 2 × 2 + 2 factorial arrangement, with four drying surfaces (soil, asphalt, concrete and ceramic floor), two drying environments (seeds exposed to the sun or shade), two seed storage periods (1 and 8 months) and two additional treatments with drying in paper bags under laboratory conditions (control) and stored for 1 or 8 months, with four replicates. The water content, viability by the tetrazolium test, electrical conductivity, germination rate, germination rate index and seed sanitary quality were measured. Drying at full sun impaired the physiological quality of the seeds due to the high temperatures (46.8-51.0 ºC) of the drying surface; however, reduced the incidence of pathogens. The drying of seeds in paper bags under shade results in a higher physiological quality, but the sanitary quality is compromised. However, the pathogens present in the seeds did not inhibit their viability and vigor. The storage for eight months reduces the seed quality.
DOI: 10.7284/135022
title: Gyrocompass data collected during research cruise SKQ201905S using a Sperry NAVIGAT 2100 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244951
title: IS THERE AN ASSOCIATION BETWEEN GLUCOCORTICOID USE AND FRACTURES? A COMPARATIVE STUDY IN A TRAUMA HOSPITAL

description: ABSTRACT Objective: To assess the association between traumatic fractures and glucocorticoids taken 12 months prior to a trauma, in children and adolescents seen at an emergency room. Methods: A case-control study was conducted from April to October 2015, at a pediatric emergency hospital with patients aged 3- to 14 years-old, who had suffered physical trauma. Some of the patients had a fracture and some did not. The data analyzed were obtained from medical records, physical examination of the patients, and interview with the patients’ caregivers. Glucocorticoid use in the past 12 months, demographic variables, body mass index, milk intake, trauma intensity, physical activity and smoking in the household were compared between the two patient groups. Results: A total of 104 patients with physical trauma were studied - 50 had a fracture and 54 did not. Of all the patients, 15.4% had previously used glucocorticoids, and there were no statistically significant differences between the groups. The age range of 10- to 14 years-old, severe trauma and physical activity were more prevalent among patients with a bone fracture. Conclusions: This study did not find an association between previous glucocorticoid use and the occurrence of fractures in children and adolescents. The age range of 10- to 14 years-old, severe trauma, and physical activity were associated with an increased risk for fractures.