cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9870770
title: What is on the menu for frugivorous birds in the Cerrado? Fruiting phenology and nutritional traits highlight the importance of habitat complementarity

description: ABSTRACT The relationship between plants and frugivorous animals is modulated by morphological and nutritional characteristics of fruits, as well as their seasonal availability across habitats. We evaluated fruiting phenology, fruit morphology and nutritional characteristics of 35 abundant plant species from 15 families associated with frugivorous birds from distinct habitats in the Cerrado (savanna, forest, and palm swamp). For a subset of 16 plant species, we also evaluated the overlap in interactions with frugivorous birds using data from the literature. Open-habitat plants had their fruiting peak during the rainy season, while fruiting of forest species was evenly distributed across the year. Plants of the same family exhibited similar fruit morphology and nutritional characteristics. Most plants had fruits with more sugars than lipids, while all species with higher lipid content were from savanna habitats and produced fruits during the rainy season, the peak reproductive season for birds. Assemblages of frugivorous birds exhibited considerable overlap, irrespective of habitat or fruiting season of plants. The complementarity found among habitats, considering seasonal availability and nutritional profile of fruits for frugivorous birds, is relevant for community maintenance and regeneration. Therefore, this landscape level complexity should always be considered in conservation and restoration policies for the Cerrado.
DOI: 10.6084/m9.figshare.9870776.v1
title: Investigation of the effect of nozzle design on rheological bioprinting properties using computational fluid dynamics

description: ABSTRACT Bioprinting is the utilization of techniques derived from three-dimensional printing to generate complex biological structures which may replace natural tissues or organs. It employs high spatial resolution deposition of different cell types, growth factors and biomaterials. Those together form bioinks, which are the bioprinting inputs, analogously to conventional inks with regard to inkjet printing. In extrusion bioprinting, continuous bioink filaments are deposited layer by layer on a surface by means of an extruder nozzle, employing the displacement of a piston or pneumatic pressure. If mechanical stresses applied on a cell membrane exceed a critical value, which depends on the cell type, the cell membrane may disrupt. Computational fluid dynamics (CFD) simulations of the bioink extrusion were done to evaluate shear stresses caused by the internal pressure of extruder nozzles during bioprinting. Different three-dimensional conical nozzle designs were tested by varying angles of convergence, lengths, input diameters and output diameters of the nozzles. The power-law model, with constants k = 109.73 Pa·s0,154 and n = 0.154, was used to describe the expected non-Newtonian behavior of the bioink. Shear stresses and shear rates were evaluated for each nozzle design considering different pressures or velocities as boundary conditions at the nozzle entrance. The maximum wall shear stress value on each different nozzle varied between 1,038 Pa and 4,915 Pa. The results indicated which details of nozzle geometry are most relevant in order to optimize bioprinting. The best conditions for bioink rheology were also evaluated to ensure good printability and high cell viability.
DOI: 10.6084/m9.figshare.9870761
title: Effects of 5 Years of Intensive Behavioral Intervention on the Development of a Child with Autism

description: ABSTRACT The purpose of this single case study is to describe and evaluate the application of an Intensive Behavioral Intervention model, carried out through the training of caregivers, with a child with severely compromised and non-speaking autism. The intervention occurred for 40 hours a week in a home and school environment, during five consecutive years. Standardized instruments were used to measure child development. Overall results indicated gains in child development and the feasibility of training of caregivers for this type of intervention.
DOI: 10.6084/m9.figshare.9870767
title: Stabilization effect of kraft lignin into PBAT:Thermal analyses approach

description: ABSTRACT Sterically hindered phenols are an important class of synthetic antioxidants for polymers, commonly incorporated to inhibit polyolefins or polyesters oxidation. However, synthetic antioxidants use is under restricted regulation due to their potential health risk and environmental impacts. Thus, great interest has been attracted to the phenol-based natural antioxidant such as lignin. This work aimed to evaluate the thermostability of kraft lignin (KL) as a natural antioxidant when incorporated into poly(butylene adipate-coterephthalate) (PBAT) matrix. PBAT-KL films (0%, 1%, 3%, 5% and 10%, by mass) were prepared by twin-screw extrusion followed by thermo-compression. These materials were examined in detail for their effect on the thermal stability using the oxidative induction time (OIT), oxidative induction temperature (OITemp) and thermogravimetric analysis (TG). According to the results, lignin-containing compositions have improved thermal resistance in oxidative environment, compared to neat PBAT. However, 10 wt.% lignin composition presented the lowest thermostability among lignin-containing compositions. The results showed that kraft lignin promotes the thermal stabilization of PBAT films at the optimal concentration of 1% by mass.
DOI: 10.6084/m9.figshare.9870773.v1
title: Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties

description: ABSTRACT Polyol structure can be affected by the catalyst used for its synthesis and may affect the curing kinetics and mechanical strength of the final polyurethane (PU). This work aimed to study the influence of catalyst concentration on the structure of bio-based polyols and on the final properties of the polyurethane adhesive obtained from these polyols. Polyols were investigated by Fourier transform infrared (FTIR), gel permeation chromatography (GPC) and hydroxyl index analysis, with the purpose of investigating the polyols chemical state after the synthesis. Results suggest that higher catalyst concentration led to polyols with higher hydroxyl index and other differences in the polyols structure. The influence of the catalysts concentration on the cure kinetics of the polyurethanes was verified using the Fourier transform infrared (FTIR). In addition, peel strength of PU adhesives was obtained by increasing catalyst concentration on polyol synthesis.
DOI: 10.6084/m9.figshare.9870779.v1
title: Morphological evaluation of electrospun polycaprolactone fibers depending on the type of solvent

description: ABSTRACT Recently, tissue engineering strategies for wound and burn treatment focuses on the use of nanostructures biomaterials capable of facilitating skin regeneration and wound healing. One of the processes used to obtain this type of biomaterial is electrospinning. This process allows to producing films composed of polymeric nanofibers from a polymeric solution and thus, mimics the skin extracellular matrix. Among the most commonly used polymers, polycaprolactone (PCL) can be highlighted due to its solubility in several types of solvents. This study aimed to evaluate the effect of electrical conductivity of different solvents on morphology of electrospun PCL fibers. The influence of molar mass and viscosity of solution as well as flow rate and voltage was also investigated. Acetic acid (AC), formic acid (AF), chloroform (CLO), dichloromethane (DCM) and dimethylformamide (DMF) were used as solvents. Fibers with uniform diameters and defect-free, such as beads, were obtained using the DCM:DMF 70:30 (m/m) solvent system. In spite of decreasing PCL molar mass during processing, this solvent system presented the best results for PCL electrospinning. Electrical conductivity directly influenced all studied variables. When solvent systems with higher electrical conductivity value were used, lower voltage was necessary to produce defect-free fibers.
DOI: 10.6084/m9.figshare.9870758
title: Prevalence and factors associated with excess weight in adolescents in a low-income neighborhood - Northeast, Brazil

description: Abstract Objectives: to study the prevalence of excess weight and associated factors among adolescents from a low-income neighborhood located in the city of Recife, Pernambuco. Methods: cross-sectional study, in which behavioral, socioeconomic and demographic information was collected from June to December 2014. Excess weight was calculated based on body mass index for age and the cut-off points, by the World Health Organization (2007). To analyze associations between predictor variables and the outcome, multivariate data analysis was performed following the Poisson Regression (Prevalence Ratio - PR) with their respective 95% confidence intervals (95%CI). Results: twenty-five adolescents participated in the study, with a prevalence of 36.4% of excess weight: 20.4% overweight (95%CI=15.1-25.7) and 16.0% obesity (95%CI= 11.2-20.8), predominantly in female gender (42.5%; p=0.031). The outcome was associated with internet access (PR=1.20; 95%CI=1.01-1.43), the number of people in the family (PR= 1.12; 95%CI=1.01-1.28) and screen time (PR=1.13; 95%CI=1.01-1.27), but only in male gender. Conclusions: the prevalence found was higher than that of other national researches, especially for the female gender. In the male gender, not having internet access, a lesser number of family members and a longer screen time proved to be factors associated with being excess weight.
DOI: 10.6084/m9.figshare.9870767.v1
title: Stabilization effect of kraft lignin into PBAT:Thermal analyses approach

description: ABSTRACT Sterically hindered phenols are an important class of synthetic antioxidants for polymers, commonly incorporated to inhibit polyolefins or polyesters oxidation. However, synthetic antioxidants use is under restricted regulation due to their potential health risk and environmental impacts. Thus, great interest has been attracted to the phenol-based natural antioxidant such as lignin. This work aimed to evaluate the thermostability of kraft lignin (KL) as a natural antioxidant when incorporated into poly(butylene adipate-coterephthalate) (PBAT) matrix. PBAT-KL films (0%, 1%, 3%, 5% and 10%, by mass) were prepared by twin-screw extrusion followed by thermo-compression. These materials were examined in detail for their effect on the thermal stability using the oxidative induction time (OIT), oxidative induction temperature (OITemp) and thermogravimetric analysis (TG). According to the results, lignin-containing compositions have improved thermal resistance in oxidative environment, compared to neat PBAT. However, 10 wt.% lignin composition presented the lowest thermostability among lignin-containing compositions. The results showed that kraft lignin promotes the thermal stabilization of PBAT films at the optimal concentration of 1% by mass.
DOI: 10.6084/m9.figshare.9870770.v1
title: What is on the menu for frugivorous birds in the Cerrado? Fruiting phenology and nutritional traits highlight the importance of habitat complementarity

description: ABSTRACT The relationship between plants and frugivorous animals is modulated by morphological and nutritional characteristics of fruits, as well as their seasonal availability across habitats. We evaluated fruiting phenology, fruit morphology and nutritional characteristics of 35 abundant plant species from 15 families associated with frugivorous birds from distinct habitats in the Cerrado (savanna, forest, and palm swamp). For a subset of 16 plant species, we also evaluated the overlap in interactions with frugivorous birds using data from the literature. Open-habitat plants had their fruiting peak during the rainy season, while fruiting of forest species was evenly distributed across the year. Plants of the same family exhibited similar fruit morphology and nutritional characteristics. Most plants had fruits with more sugars than lipids, while all species with higher lipid content were from savanna habitats and produced fruits during the rainy season, the peak reproductive season for birds. Assemblages of frugivorous birds exhibited considerable overlap, irrespective of habitat or fruiting season of plants. The complementarity found among habitats, considering seasonal availability and nutritional profile of fruits for frugivorous birds, is relevant for community maintenance and regeneration. Therefore, this landscape level complexity should always be considered in conservation and restoration policies for the Cerrado.
DOI: 10.6084/m9.figshare.9870758.v1
title: Prevalence and factors associated with excess weight in adolescents in a low-income neighborhood - Northeast, Brazil

description: Abstract Objectives: to study the prevalence of excess weight and associated factors among adolescents from a low-income neighborhood located in the city of Recife, Pernambuco. Methods: cross-sectional study, in which behavioral, socioeconomic and demographic information was collected from June to December 2014. Excess weight was calculated based on body mass index for age and the cut-off points, by the World Health Organization (2007). To analyze associations between predictor variables and the outcome, multivariate data analysis was performed following the Poisson Regression (Prevalence Ratio - PR) with their respective 95% confidence intervals (95%CI). Results: twenty-five adolescents participated in the study, with a prevalence of 36.4% of excess weight: 20.4% overweight (95%CI=15.1-25.7) and 16.0% obesity (95%CI= 11.2-20.8), predominantly in female gender (42.5%; p=0.031). The outcome was associated with internet access (PR=1.20; 95%CI=1.01-1.43), the number of people in the family (PR= 1.12; 95%CI=1.01-1.28) and screen time (PR=1.13; 95%CI=1.01-1.27), but only in male gender. Conclusions: the prevalence found was higher than that of other national researches, especially for the female gender. In the male gender, not having internet access, a lesser number of family members and a longer screen time proved to be factors associated with being excess weight.
DOI: 10.5519/qd.cjtrqg8j
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (4590853 records)
DOI: 10.6084/m9.figshare.9870752
title: Rapid and Automatic Classification of Tobacco Leaves Using a Hand-Held DLP-Based NIR Spectroscopy Device

description: A hand-held near infrared (NIR) spectroscopy device is much more convenient than a traditional desktop NIR instrument. Thus, it is more suitable for the practical application. An automatic and rapid tool for grading tobacco leaves on the spot using a hand-held digital light processing (DLP)-based NIR spectroscopy device is proposed in this paper. Firstly, the spectral data of the samples is scanned with a hand-held NIR device directly from the tobacco leaves without any samples preparation procedures. Then, the training model of different classes is built and the class of each test sample is predicted by using sparse representation classification (SRC) algorithm. Comparing with the traditional linear discriminant analysis (LDA) and support vector machine (SVM) algorithms, the classification accuracy of SRC method is the highest and has the least computation time. The results show that hand-held NIR spectroscopy technology could be a novel classification tool for grading tobacco leaves in the purchasing on the spot.
DOI: 10.6084/m9.figshare.9870755
title: Spores of Plagiochila (Dumort.) Dumort.: the taxonomic relevance of morphology and ultrastructure

description: ABSTRACT Plagiochilaceae is a family of leafy liverworts that are distributed worldwide. It is of great importance due to its taxonomic and ecological implications among bryophytes. Most species of the family belong to the genus Plagiochila, but there is no consensus regarding its infrageneric circumscription. There have been few palynological studies involving Plagiochilaceae and Plagiochila. Here, we describe the spore morphology of seventeen species of Plagiochila and discuss the taxonomic value of palynological characters for these taxa. The spores were processed by standard palynological techniques and analyzed using light and electron microscopy. The spores were found to be apolar, spheroidal, released monads that vary in size from 13µm to 58µm (small to large size). The sporoderm comprises an intine (stratified), a nexine, and a sexine. The spore surface is ornamented with granules that vary in shape and morphology, thus allowing the studied species to be grouped into four spore types: regular and delicate granulate, irregular and coarse granulate, long granules with flattened apices, and long and straight granules. Hierarchical cluster analysis revealed five different groups of species, evidencing the importance of spore information for taxonomic and phylogenetic studies.
DOI: 10.6084/m9.figshare.9870761.v1
title: Effects of 5 Years of Intensive Behavioral Intervention on the Development of a Child with Autism

description: ABSTRACT The purpose of this single case study is to describe and evaluate the application of an Intensive Behavioral Intervention model, carried out through the training of caregivers, with a child with severely compromised and non-speaking autism. The intervention occurred for 40 hours a week in a home and school environment, during five consecutive years. Standardized instruments were used to measure child development. Overall results indicated gains in child development and the feasibility of training of caregivers for this type of intervention.
DOI: 10.6084/m9.figshare.9870746
title: Professionalizing bureaucracy and building state capacities: are there unequal advances in Brazilian public administration?

description: Abstract This article contributes to the discussion on public administration in Brazil. It examines the differences between the four functions of the state (basic functions, welfare, infrastructure and development, and emerging functions), based on the positions and careers of public servants. The data were collected in 2014 using a survey with public managers from different agencies of the Brazilian federal administration. The results point to distinctions regarding the roles played by middle managers, considering their distribution by state functions, profile, and activities. In a historical perspective, although there are basic functions that constitute the state, the creation of new careers and the recruitment of staff in the bureaucracy resulted in unequal development of the different state functions, generating imbalance and asymmetries. Also, emerging functions are generating new, more flexible, and dynamic ways for managers to work, which have renewed the Brazilian bureaucracy, albeit in a limited and heterogeneous way.
DOI: 10.6084/m9.figshare.9870749
title: Um Modelo de Programação por Metas Estendido para o Planejamento de Radioterapia

description: ABSTRACT In this paper an extended goal programming model applied to radiotherapy planning is proposed, in which the best weight combination was found to each goal. The model was applied to a real prostate cancer case and solved by the software CPLEX, where Logarithmic Barrier Interior Point Method was used.
DOI: 10.6084/m9.figshare.9870755.v1
title: Spores of Plagiochila (Dumort.) Dumort.: the taxonomic relevance of morphology and ultrastructure

description: ABSTRACT Plagiochilaceae is a family of leafy liverworts that are distributed worldwide. It is of great importance due to its taxonomic and ecological implications among bryophytes. Most species of the family belong to the genus Plagiochila, but there is no consensus regarding its infrageneric circumscription. There have been few palynological studies involving Plagiochilaceae and Plagiochila. Here, we describe the spore morphology of seventeen species of Plagiochila and discuss the taxonomic value of palynological characters for these taxa. The spores were processed by standard palynological techniques and analyzed using light and electron microscopy. The spores were found to be apolar, spheroidal, released monads that vary in size from 13µm to 58µm (small to large size). The sporoderm comprises an intine (stratified), a nexine, and a sexine. The spore surface is ornamented with granules that vary in shape and morphology, thus allowing the studied species to be grouped into four spore types: regular and delicate granulate, irregular and coarse granulate, long granules with flattened apices, and long and straight granules. Hierarchical cluster analysis revealed five different groups of species, evidencing the importance of spore information for taxonomic and phylogenetic studies.
DOI: 10.6084/m9.figshare.9870746.v1
title: Professionalizing bureaucracy and building state capacities: are there unequal advances in Brazilian public administration?

description: Abstract This article contributes to the discussion on public administration in Brazil. It examines the differences between the four functions of the state (basic functions, welfare, infrastructure and development, and emerging functions), based on the positions and careers of public servants. The data were collected in 2014 using a survey with public managers from different agencies of the Brazilian federal administration. The results point to distinctions regarding the roles played by middle managers, considering their distribution by state functions, profile, and activities. In a historical perspective, although there are basic functions that constitute the state, the creation of new careers and the recruitment of staff in the bureaucracy resulted in unequal development of the different state functions, generating imbalance and asymmetries. Also, emerging functions are generating new, more flexible, and dynamic ways for managers to work, which have renewed the Brazilian bureaucracy, albeit in a limited and heterogeneous way.
DOI: 10.6084/m9.figshare.9870749.v1
title: Um Modelo de Programação por Metas Estendido para o Planejamento de Radioterapia

description: ABSTRACT In this paper an extended goal programming model applied to radiotherapy planning is proposed, in which the best weight combination was found to each goal. The model was applied to a real prostate cancer case and solved by the software CPLEX, where Logarithmic Barrier Interior Point Method was used.
DOI: 10.6084/m9.figshare.9870752.v1
title: Rapid and Automatic Classification of Tobacco Leaves Using a Hand-Held DLP-Based NIR Spectroscopy Device

description: A hand-held near infrared (NIR) spectroscopy device is much more convenient than a traditional desktop NIR instrument. Thus, it is more suitable for the practical application. An automatic and rapid tool for grading tobacco leaves on the spot using a hand-held digital light processing (DLP)-based NIR spectroscopy device is proposed in this paper. Firstly, the spectral data of the samples is scanned with a hand-held NIR device directly from the tobacco leaves without any samples preparation procedures. Then, the training model of different classes is built and the class of each test sample is predicted by using sparse representation classification (SRC) algorithm. Comparing with the traditional linear discriminant analysis (LDA) and support vector machine (SVM) algorithms, the classification accuracy of SRC method is the highest and has the least computation time. The results show that hand-held NIR spectroscopy technology could be a novel classification tool for grading tobacco leaves in the purchasing on the spot.