cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9697094.v1
title: Beam-Column Joints Reinforcement Detailing Adequacy in Case of a Corner Column Loss-Numerical Analysis

description: Abstract This study investigates the behavior of reinforced concrete (RC) beam-column joints at the corner panel after a ground corner column loss scenario. The ductility of a frame is dependent on the ductility of its components, particularly its joints. Deficiency in joints performance can be related to an unexpected event. For example, the removal of a ground corner column turns the joint above into an inverted knee joint, and also inverses the direction of the resulted bending moments in the adjacent exterior and interior joints. Throughout this work, the effects of these changes are evaluated numerically using different modeling techniques considering both seismic and non-seismic reinforcement details. Numerical simulations of standard and sub-standard joints that were verified against experimentally tested joints are also presented. Joint macro models are developed using the OpenSees platform. These numerical models are then used to simulate the substandard beam-column joints appearing in RC frames after ground corner column removal. Moreover, strut and tie models (STMs) were developed for a substandard knee joint to validate the obtained numerical results. The application of the developed numerical models allows to identify the evolution of a joint’s capacity in function of its reinforcement detailing. The analysis shows the suitability of seismic detailing for exterior and interior joints and also a decrease in the inverted knee joint resistance and this can be recovered by adding i) more confinement to the joint panel zone or ii) joint vertical stirrups. An increase in the degree of confidence in the numerical results is achieved by reproduce similar behavior using different analysis methods.
DOI: 10.6084/m9.figshare.9697097.v1
title: Access to dental services and oral health-related quality of life in the context of primary health care

description: Abstract The aim of the present study was to evaluate the association between access to oral health care in the Primary Health Care (PHC) and Oral Health-Related Quality of Life (OHRQoL). The present study was a cross-sectional study, and the sample was composed of 412 users living in the areas covered by the public PHC services who visited a health unit for an oral exam or treatment in the last 24 months. Participants in the study responded to a home-based interview with questions that addressed socioeconomic status, behavioral, general health, dental prostheses, access to dental services in the PHC and their OHRQoL as measured by the Oral Health Impact Profile (OHIP-14) instrument. After the interview, a dental examination was performed to count the number of teeth. Chi-square tests, Student’s t tests and multivariate analyses were performed using a hierarchical model and a Poisson regression with robust variance to evaluate the association between independent variables and OHRQoL. Access to oral health services in the PHC was statistically associated with OHRQoL, and the estimated prevalence rate was PR = 1.17 (CI 95% 1.00-1.37). In this study, the definition of access was based on the availability of dental consultations on demand. The study identified that lack of access to oral health services offered by the PHC was associated with a higher prevalence of impact on the quality of life of individuals.
DOI: 10.6084/m9.figshare.9697082
title: Guidebook for renal dialysis patients: care of central venous catheters and arteriovenous fistula

description: ABSTRACT Objective: To design and validate the content and format of a guidebook for chronic renal failure patients about the care with venous access for hemodialysis at home. Method: Methodological study, in which the steps for the guidebook design were: project planning, literature search, material content, and qualification selection. Results: After analysis of the articles, the content to be included in the guidebook was selected. The first draft of the guidebook was submitted for content and format validation, with the participation of 12 specialists. The necessary adjustments for the design of the final version were made with the help of an illustrator. Conclusion: The designed guidebook, “Hemodialysis: Care of Venous Accesses and Intercurrences at Home,” consists of educational material to help hemodialysis patients with daily care with central venous catheter and arteriovenous fistula practices in case of intercurrences.
DOI: 10.6084/m9.figshare.9697088
title: Users’ perceptions and preferences towards maxillary removable orthodontic retainers: a crossover randomized clinical trial

description: Abstract The aim of this study was to assess, correlate, and compare users’ perceptions and preference related to maxillary removable retainers. Volunteers were recruited to use four retainer types: conventional wrap-around (CWA), wrap-around with an anterior opening (OWA), “U” wrap-around (UWA), and clear thermoplastic retainer (CT). The main outcomes were the volunteers’ perceptions, evaluated with a 100-mm visual analogue scale, and their preferred retainer. The retainers were used for 21 days each (washout intervals of 7 days). Nineteen volunteers (27 ± 4.53 years) were randomly divided into four groups that used the four retainers, but with a different sequence. Perceptions were evaluated immediately after the use of each retainer and the preference at the end of the research. Repeated measures ANOVA and Friedman tests with post-hoc Tukey’s test (intergroup comparisons), and Pearson and Spearman analyses (correlations between perceptions) were applied. The WA retainers did not significantly differ among themselves. The CT was rated significantly worse in speech (p ≤ 0.001), discomfort (p &lt; 0.001), and occlusal interference (p &lt; 0.001), and did not significantly differ from the others in esthetics. Users preferred significant more the WA retainers in comparison with the CT retainers. The occlusal interference caused by the CT was positively correlated to other perceptions, such as changes in speech and discomfort. WA retainers presented similar preference and perceptions, but were significantly better than the CT. The CT occlusal coverage appeared to be the primary cause of its rejection.
DOI: 10.6084/m9.figshare.9697082.v1
title: Guidebook for renal dialysis patients: care of central venous catheters and arteriovenous fistula

description: ABSTRACT Objective: To design and validate the content and format of a guidebook for chronic renal failure patients about the care with venous access for hemodialysis at home. Method: Methodological study, in which the steps for the guidebook design were: project planning, literature search, material content, and qualification selection. Results: After analysis of the articles, the content to be included in the guidebook was selected. The first draft of the guidebook was submitted for content and format validation, with the participation of 12 specialists. The necessary adjustments for the design of the final version were made with the help of an illustrator. Conclusion: The designed guidebook, “Hemodialysis: Care of Venous Accesses and Intercurrences at Home,” consists of educational material to help hemodialysis patients with daily care with central venous catheter and arteriovenous fistula practices in case of intercurrences.
DOI: 10.6084/m9.figshare.9697088.v1
title: Users’ perceptions and preferences towards maxillary removable orthodontic retainers: a crossover randomized clinical trial

description: Abstract The aim of this study was to assess, correlate, and compare users’ perceptions and preference related to maxillary removable retainers. Volunteers were recruited to use four retainer types: conventional wrap-around (CWA), wrap-around with an anterior opening (OWA), “U” wrap-around (UWA), and clear thermoplastic retainer (CT). The main outcomes were the volunteers’ perceptions, evaluated with a 100-mm visual analogue scale, and their preferred retainer. The retainers were used for 21 days each (washout intervals of 7 days). Nineteen volunteers (27 ± 4.53 years) were randomly divided into four groups that used the four retainers, but with a different sequence. Perceptions were evaluated immediately after the use of each retainer and the preference at the end of the research. Repeated measures ANOVA and Friedman tests with post-hoc Tukey’s test (intergroup comparisons), and Pearson and Spearman analyses (correlations between perceptions) were applied. The WA retainers did not significantly differ among themselves. The CT was rated significantly worse in speech (p ≤ 0.001), discomfort (p &lt; 0.001), and occlusal interference (p &lt; 0.001), and did not significantly differ from the others in esthetics. Users preferred significant more the WA retainers in comparison with the CT retainers. The occlusal interference caused by the CT was positively correlated to other perceptions, such as changes in speech and discomfort. WA retainers presented similar preference and perceptions, but were significantly better than the CT. The CT occlusal coverage appeared to be the primary cause of its rejection.
DOI: 10.6084/m9.figshare.9697067
title: Recent advances in chemistry of amino sugars: occurrence, biosynthesis, synthesis and application

description: Amino sugars are chemical compounds that have a sugar backbone, in which one of the hydroxyl groups is replaced by an amino group. Derivatives of amine-containing sugars, such as N-acetylglucosamine, are also considered amino sugars. The synthetic introduction of amino functionalities in a regio- and stereoselective manner ontosugar scaffolds represents a substantial challenge. Most of the modern methods for the preparation of 1-, 2- and 3-amino sugars are those starting from glycals, 2,3-unsaturated O-glycosides epoxy-sugars, keto-sugars among others. This review summarizes recente developments in the current state of knowledge concerning the occurrence, biosynthesis, synthesis and application of amino sugars.
DOI: 10.6084/m9.figshare.9697049
title: Value of Functionalized Charcoal for Increasing the Efficiency of Urea N Uptake: Insights into the Functionalization Process and the Physicochemical Characteristics of Charcoal

description: ABSTRACT Functionalized charcoal (CHox) incorporated into urea is known for its ability to reduce NH3 volatilization and increase agronomic efficiency. However, it is important to optimize the functionalization process and to elucidate its relationship with the physicochemical properties of CHox for N supply. Thus, charcoal obtained from eucalyptus wood was functionalized with different HNO3 concentrations and reaction times. Ammonia adsorption by CHox was evaluated in chambers with high NH3 concentrations. Dry matter yield, N uptake, and apparent N recovery efficiency of corn plants were evaluated after the application of the urea-CHox mixture to soil in a greenhouse experiment. The properties of CHox, such as pH, isoelectric point, and total acidity (carboxylic and phenolics groups) depended on the HNO3 concentration but were not influenced by the reaction time. The NH3 adsorption by the functionalized charcoal showed a positive correlation with the quantity of carboxylic and phenolic groups and a negative correlation with the pH value and the isoelectric point. The small differences observed in dry matter yield, N accumulation, and apparent N recovery efficiency among the corn plants from urea mixed with CHox or humic acids derived from charcoal (AHCH) are not sufficient to determine the higher efficiency of these sources.
DOI: 10.6084/m9.figshare.9697055
title: Excess weight in Xukuru indigenous children in Ororubá, Pernambuco State, Brazil: magnitude and associated factors

description: Abstract: The few studies on health and nutrition in indigenous peoples in Northeast Brazil point to some differences with indigenous peoples in the North and Central of the country. This study estimated the prevalence rates and risk of overweight and excess weight in Xukuru children in the village of Ororubá, Pernambuco State, and assessed the socioeconomic and demographic factors potentially associated with these conditions. This cross-sectional study analyzed the associations between adequate weight, excess weight (overweight and obesity), and risk of overweight according to the indices and cutoff points of the World Health Organization for children and the explanatory variables, using multinomial logistic regression. Prevalence of excess weight was 7.7% and risk of overweight was 24.2%. The odds of risk of overweight and excess weight were higher in children &lt; 2 years. Children of obese mothers showed higher odds of excess weight. Prevalence of risk of overweight was 97% higher when compared to households with fixed income. The findings suggest that the Xukuru are experiencing an accelerated nutritional transition, with a paradoxical situation to which other indigenous peoples in Brazil are also exposed.
DOI: 10.6084/m9.figshare.9697055.v1
title: Excess weight in Xukuru indigenous children in Ororubá, Pernambuco State, Brazil: magnitude and associated factors

description: Abstract: The few studies on health and nutrition in indigenous peoples in Northeast Brazil point to some differences with indigenous peoples in the North and Central of the country. This study estimated the prevalence rates and risk of overweight and excess weight in Xukuru children in the village of Ororubá, Pernambuco State, and assessed the socioeconomic and demographic factors potentially associated with these conditions. This cross-sectional study analyzed the associations between adequate weight, excess weight (overweight and obesity), and risk of overweight according to the indices and cutoff points of the World Health Organization for children and the explanatory variables, using multinomial logistic regression. Prevalence of excess weight was 7.7% and risk of overweight was 24.2%. The odds of risk of overweight and excess weight were higher in children &lt; 2 years. Children of obese mothers showed higher odds of excess weight. Prevalence of risk of overweight was 97% higher when compared to households with fixed income. The findings suggest that the Xukuru are experiencing an accelerated nutritional transition, with a paradoxical situation to which other indigenous peoples in Brazil are also exposed.
DOI: 10.6084/m9.figshare.9697058
title: A Regional Legacy Soil Dataset for Prediction of Sand and Clay Content with Vis-Nir-Swir, in Southern Brazil

description: ABSTRACT The success of soil prediction by VIS-NIR-SWIR spectroscopy has led to considerable investment in large soil spectral libraries. The aims of this study were 1) to develop a soil VIS-NIR-SWIR spectroscopy approach using legacy soil samples to improve spectral soil information in a regional scale; (2) to compare six spectral preprocessing techniques; and (3) to compare the performance of linear and non-linear multivariate models for prediction of sand and clay content. A total of 1,534 legacy soil samples, stored by Epagri, were collected from agricultural areas in 2009 on a regional scale, covering 260 municipalities of Santa Catarina. Six spectral preprocessing techniques were applied and compared with reflectance spectra (control treatment) in the development of sand and clay prediction models. Five multivariate regression models, Support Vector Machines, Gaussian Process Regression, Cubist, Random Forest, and Partial Least Square Regression were compared. The scatter-corrective preprocessing groups produced similar or better performance than spectral-derivatives. In addition, preprocessing spectra prior to regression analysis does not improve sand prediction, since reflectance spectra achieved the best performance using Cubist, SVM, and PLS models. In general, clay content presented better prediction accuracy than sand content. The best multivariate model to predict sand and clay content from soil VIS-NIR-SWIR spectra was Cubist. The best Cubist performance was achieved combined with reflectance spectra (R2 = 0.73; root mean square error = 10.60 %; ratio of the performance to the interquartile range = 2.36) and MSC (R2 = 0.83; root mean square error = 7.29 %; ratio of the performance to the interquartile range = 3.70) for sand and clay content, respectively. Considering the mean RMSE values of the validation set, the predictive ability of the multivariate models decreased in the following order: Cubist&gt;PLS&gt;RF&gt;GPR&gt;SVM for both properties. The predictive ability of VIS-NIR-SWIR reflectance spectroscopy achieved in this study for sand and clay content using legacy soil data and heterogeneous samples confirmed the potential of the spectroscopy approach.
DOI: 10.6084/m9.figshare.9697067.v1
title: Recent advances in chemistry of amino sugars: occurrence, biosynthesis, synthesis and application

description: Amino sugars are chemical compounds that have a sugar backbone, in which one of the hydroxyl groups is replaced by an amino group. Derivatives of amine-containing sugars, such as N-acetylglucosamine, are also considered amino sugars. The synthetic introduction of amino functionalities in a regio- and stereoselective manner ontosugar scaffolds represents a substantial challenge. Most of the modern methods for the preparation of 1-, 2- and 3-amino sugars are those starting from glycals, 2,3-unsaturated O-glycosides epoxy-sugars, keto-sugars among others. This review summarizes recente developments in the current state of knowledge concerning the occurrence, biosynthesis, synthesis and application of amino sugars.
DOI: 10.6084/m9.figshare.9697049.v1
title: Value of Functionalized Charcoal for Increasing the Efficiency of Urea N Uptake: Insights into the Functionalization Process and the Physicochemical Characteristics of Charcoal

description: ABSTRACT Functionalized charcoal (CHox) incorporated into urea is known for its ability to reduce NH3 volatilization and increase agronomic efficiency. However, it is important to optimize the functionalization process and to elucidate its relationship with the physicochemical properties of CHox for N supply. Thus, charcoal obtained from eucalyptus wood was functionalized with different HNO3 concentrations and reaction times. Ammonia adsorption by CHox was evaluated in chambers with high NH3 concentrations. Dry matter yield, N uptake, and apparent N recovery efficiency of corn plants were evaluated after the application of the urea-CHox mixture to soil in a greenhouse experiment. The properties of CHox, such as pH, isoelectric point, and total acidity (carboxylic and phenolics groups) depended on the HNO3 concentration but were not influenced by the reaction time. The NH3 adsorption by the functionalized charcoal showed a positive correlation with the quantity of carboxylic and phenolic groups and a negative correlation with the pH value and the isoelectric point. The small differences observed in dry matter yield, N accumulation, and apparent N recovery efficiency among the corn plants from urea mixed with CHox or humic acids derived from charcoal (AHCH) are not sufficient to determine the higher efficiency of these sources.
DOI: 10.6084/m9.figshare.9697046
title: Evaluation of corneal layers and anterior sclera in patients with primary Sjögren's syndrome

description: ABSTRACT Purpose: We aimed to compare the thickness of anterior sclera, corneal layers, and pre-ocular tear film between patients with primary Sjögren's syndrome and healthy individuals. Methods: Fifty-one patients with primary Sjögren's syndrome and 41 healthy control participants were recruited in this cross-sectional and comparative study. The thickness of the pre-ocular tear film, corneal epithelium, Bowman's layer, stroma, Descemet's membrane, and endothelium were measured on the corneal apex. Anterior scleral thickness was measured at distances of 1 mm and 3 mm from the limbus. The anterior segment module of spectral-domain optical coherence tomography was used to measure thicknesses of pre-ocular tear film, corneal layers, and anterior sclera. Results: Tear film thickness, Schirmer's test, and tear break up time values were significantly lower in the Sjögren's disease group than in the healthy controls (p&lt;0.05). The thickness measurements of corneal layers and sclera were similar between the groups. Tear film thickness was moderately correlated with the Schirmer's test results (r=0.34, p=0.001), but there was no correlation between the Schirmer's test results and tear break up time (r=0.18, p=0.09). Conclusions: Pre-ocular tear film, as measured by anterior segment optical coherence tomography, was thinner in patients with primary Sjögren's syndrome than in the healthy controls. The thicknesses of corneal layers and anterior sclera were similar between the groups.
DOI: 10.6084/m9.figshare.9697037
title: Dynamic Response Analysis of Geogrid Reinforced Embankment Supported by CFG Pile Structure During a High-Speed Train Operation

description: Abstract The performance of railroad structure has a tremendous influence on the safety and stable operation of high-speed trains. Strong vibrations and the degradation rate of the track are the main factors affecting the transport safety of a railroad built over a weak soil. Geogrid reinforced embankment supported by pile structure is a new efficient construction technique used to ensure the stability and enhance the performance of the railroad system; but only a few studies are oriented to its behavior under train operation. This paper investigates the dynamic response of geogrid reinforced embankment supported by cement fly-ash gravel pile structure during a high-speed train operation. The establishment of a realistic simulation model for railroad subjected to a moving train load, is an important first step towards the reliable design of geogrid reinforced embankment supported by pile structure. Thus, a 3D nonlinear FEM has been established to simulate the instrumented Harbin-Dalian railway test section. Each train carriage was modeled as a transient dynamic load through a user-defined Dload subroutine. The developed model was successfully validated by the dynamic response recorded from the field test section. The improvement of the railroad structure by the CFG piles and geogrids contributed significantly to the reduction of the vibration in the structure, which attenuates 1.2 times faster with the structure depth, even under overload conditions. Moreover, the phenomenon of resonance observed when the train reaches speeds of 100 and 260 km/h were annihilated. The analysis of the stress distribution within the embankment revealed that a dynamic arch is formed in the embankment at 2 m from the ground. The stress onto the pile was 16 times greater than that acted on the soil and the tensile stress developed in the geogrid was high at the piles edge below. In addition, the coupling effect of geogrid with various tensile strengths and the piles with different strength grades indicated that the combination of a high-strength pile and geogrid significantly reduces the displacement gap due to the variation of train speed. As a result, the vibrations of the track were almost constant during the train operation; thus, ensuring comfort to passengers and reducing the risk of derailment.