cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7419884
title: Productive efficiency and the future of regional disparities in Brazil

description: Abstract: We use Stochastic Production Frontiers to estimate the recent levels and the evolution of productive efficiency across regions in Brazil. Results are available for agriculture, industry and services, as well as for total production. We observe a substantive efficiency growth exhibited by agriculture at the national level, which is counterbalanced by the poor performance of services. The regional results show that efficiency levels still replicate, in general, the regional inequality that marked the country’s history through decades. However, the efficiency growth reveals new signs of convergence among states, especially for industry, with effects on the aggregate production. This indicates that inequality trends in productive efficiency may be starting to change.
DOI: 10.7284/116410
title: GNSS (Global Navigation Satellite System) data collected during research cruise NH1417 using a Garmin GPS-17HVS instrument system onboard the platform RV New Horizon

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7419881.v1
title: Handgrip strength as a predictor of sensorimotor recovery evaluated by the Fugl-Meyer scale

description: ABSTRACT Cerebrovascular accidents can leave neurological, motor and sensory sequelae. To assess and monitor the patient’s prognosis, several functional measuring instruments are used, such as the Fugl-Meyer scale, which, although widely used to estimate the sensorimotor recovery, is a long evaluation that requires training. Therefore, the objective of this study is to analyze if the handgrip strength (HGS), the Timed up and Go test (TUG) and the Functional Independence Measure (FIM) can predict the results of the Fugl-Meyer scale, in order to optimize time during sensorimotor recovery assessment, both to monitor treatment responses and for scientific research. Thus, the HGS of 35 chronic hemiparetic patients was evaluated and then applied to Fugl-Meyer Scale, which evaluates motor recovery, the FIM, which evaluates motor activities and the TUG, which is an indicative of functional mobility. Statistical analysis was performed using multiple regression (r2). The HGS was predictive of motor recovery (r2=0.46; p=0.001), while mobility (r2=0.255; p=0.007) and functional independence (r2=0.054; p=0.2) were not capable of predicting the results of the Fugl-Meyer scale. After analysis, it was concluded that HGS is a moderate predictor of motor recovery after cerebrovascular accident, while mobility and functional independence are not.
DOI: 10.6084/m9.figshare.7419884.v1
title: Productive efficiency and the future of regional disparities in Brazil

description: Abstract: We use Stochastic Production Frontiers to estimate the recent levels and the evolution of productive efficiency across regions in Brazil. Results are available for agriculture, industry and services, as well as for total production. We observe a substantive efficiency growth exhibited by agriculture at the national level, which is counterbalanced by the poor performance of services. The regional results show that efficiency levels still replicate, in general, the regional inequality that marked the country’s history through decades. However, the efficiency growth reveals new signs of convergence among states, especially for industry, with effects on the aggregate production. This indicates that inequality trends in productive efficiency may be starting to change.
DOI: 10.7284/116411
title: GNSS (Global Navigation Satellite System) data collected during research cruise NH1417 using a Ashtech ADU2 instrument system onboard the platform RV New Horizon

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7419866
title: PAni-coated LiFePO4 Synthesized by a Low Temperature Solvothermal Method

description: The composite LiFePO4/polyaniline was prepared by chemical synthesis to promote the intensification of the electrochemical properties for use as cathodes in lithium ion batteries. The X-ray diffraction (XRD) of LiFePO4 synthesized by solvothermal method were indexed to the orthorhombic structure, according to the JCPDS 40-1499. The spectra Raman and FTIR showed a high degree of ordering of LiFePO4 with interaction between LiFePO4 surface with structure conjugate of conducting polymers. The cyclic voltammogram of the composite synthesized chemically showed a significant reduction in the value of ΔE p (ΔE p = 0.20 V) when compared to LiFePO4 (ΔE p = 0.41 V), with lower charge transfer resistance values, indicating favoring electron transfer rate in the composite. Thus, the alternative synthesis route of the LiFePO4 / PAni composite was easy to handle and allowed an increase in the electrochemical properties of the LiFePO4, compared to the traditional methods that require additional thermal treatments.
DOI: 10.7284/116412
title: GNSS (Global Navigation Satellite System) data collected during research cruise NH1417 using a Furuno GP-90D instrument system onboard the platform RV New Horizon

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7419854
title: Grain Refinement of Al-5Ti-0.62C-0.2Nd Grain Refiner for Commercial Pure Aluminum and Its Effect on Mechanical Properties

description: It is well known that the mechanical properties of commercial pure Al are influenced by size of α-Al dendrites. In the present work, Al-5Ti-0.62C-0.2Nd grain refiner was prepared by a pure molten aluminum thermal explosion reaction, and its effect on grain refinement and mechanical properties of commercial pure Al was investigated. Microstructure and phase composition show that Al-5Ti-0.62C-0.2Nd grain refiner consists of α-Al, granular TiC, lump-like TiAl3, and block-like Ti2Al20Nd. Grain-refining tests on commercial pure Al show that an Al-5Ti-0.62C-0.2Nd grain refiner has better refining performance compared with Al-5Ti-0.62C grain refiner. With addition of 0.2-wt.%-Al-5Ti-0.62C-0.2Nd grain refiner, the average grain size of commercial pure Al can be refined from roughly 2800 to 155±5 µm effectively, and it has higher resistance to grain-refinement fading. On account of the grain refinement, the tensile strength and elongation are increased by approximately 18.3% and 83.5%, respectively.
DOI: 10.6084/m9.figshare.7419857
title: Length Scale of the Dendritic Array Tailoring Strength of a 5052 Aluminum Alloy

description: The present research aims to characterize 5xxx alloy series, considering chemistries based on the commercial 5052 alloy with three Mg contents (2.4wt.%, 2.6wt.% and 3.2wt.%) through transient directional solidification experiments. Very representative incoming impurities to a given twin-roll casting procedure were reached. As such, the Si, Fe, Cu, Mn and Cr-contents in the tested samples typically trend in between the suitable alloying spectrum. Microstructural analyzes were performed using polarized light microscopy of samples taken from various ingot positions. Growth relationships between the secondary dendritic spacing (λ2) and the growth velocity were determined. The 5052 alloys containing higher Mg content may induce a decrease in λ2 for a certain growth velocity. The hardness values measured across the three directionally solidified castings were directly related to the λ2, which can be considered a fundamental variable affecting mechanical strength. For representative conditions vis-à-vis those employed in industry, it was shown that even relatively small changes in Mg content of the 5052 alloy may have some impact on λ2. These results open new ways to predict the final as-cast microstructure characterizing commercial 5052 alloy products, with a view to controlling not only the dendritic growth but also the Mg content during casting operations.
DOI: 10.6084/m9.figshare.7419854.v1
title: Grain Refinement of Al-5Ti-0.62C-0.2Nd Grain Refiner for Commercial Pure Aluminum and Its Effect on Mechanical Properties

description: It is well known that the mechanical properties of commercial pure Al are influenced by size of α-Al dendrites. In the present work, Al-5Ti-0.62C-0.2Nd grain refiner was prepared by a pure molten aluminum thermal explosion reaction, and its effect on grain refinement and mechanical properties of commercial pure Al was investigated. Microstructure and phase composition show that Al-5Ti-0.62C-0.2Nd grain refiner consists of α-Al, granular TiC, lump-like TiAl3, and block-like Ti2Al20Nd. Grain-refining tests on commercial pure Al show that an Al-5Ti-0.62C-0.2Nd grain refiner has better refining performance compared with Al-5Ti-0.62C grain refiner. With addition of 0.2-wt.%-Al-5Ti-0.62C-0.2Nd grain refiner, the average grain size of commercial pure Al can be refined from roughly 2800 to 155±5 µm effectively, and it has higher resistance to grain-refinement fading. On account of the grain refinement, the tensile strength and elongation are increased by approximately 18.3% and 83.5%, respectively.
DOI: 10.6084/m9.figshare.7419857.v1
title: Length Scale of the Dendritic Array Tailoring Strength of a 5052 Aluminum Alloy

description: The present research aims to characterize 5xxx alloy series, considering chemistries based on the commercial 5052 alloy with three Mg contents (2.4wt.%, 2.6wt.% and 3.2wt.%) through transient directional solidification experiments. Very representative incoming impurities to a given twin-roll casting procedure were reached. As such, the Si, Fe, Cu, Mn and Cr-contents in the tested samples typically trend in between the suitable alloying spectrum. Microstructural analyzes were performed using polarized light microscopy of samples taken from various ingot positions. Growth relationships between the secondary dendritic spacing (λ2) and the growth velocity were determined. The 5052 alloys containing higher Mg content may induce a decrease in λ2 for a certain growth velocity. The hardness values measured across the three directionally solidified castings were directly related to the λ2, which can be considered a fundamental variable affecting mechanical strength. For representative conditions vis-à-vis those employed in industry, it was shown that even relatively small changes in Mg content of the 5052 alloy may have some impact on λ2. These results open new ways to predict the final as-cast microstructure characterizing commercial 5052 alloy products, with a view to controlling not only the dendritic growth but also the Mg content during casting operations.
DOI: 10.7284/116409
title: Gyrocompass data collected during research cruise NH1417 using a Sperry MK-37 instrument system onboard the platform RV New Horizon

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7419851
title: Species – specific PCR test for the quick recognition of equine tissue in raw and processed beef meat mixtures

description: Abstract PCR was applied for the discovery of adulteration of crude and processed beef meat with horse and donkey tissue. This was performed by blending (w/w) horse or donkey meat to beef meat in an extent up to 1:10000 (0.01%). The sensitivity was resolved as high as 0.01%. All used primers showed specificity in the PCR reactions utilizing layout DNAs from three animal species. PCR application on 96 beef meat and meat product samples gathered randomly from street vendors and prominent retail markets (24 of burger, 16 of minced meat, 24 of kofta, 16 of sausage, 7 of raw meat and 9 of launcheon) uncovered 6 positive for donkey tissue (3 from sausage, 2 from minced meat and 1 from kofta) and 2 positive for horse tissue (from sausage). This basic PCR strategy effectively distinguished adulteration of raw and processed beef meat samples with horse and donkey tissue. This work also highlights on the severity of the meat adulteration problem in Egypt.
DOI: 10.6084/m9.figshare.7419845
title: Physicochemical characteristics and sensory acceptance of jambolan nectars ( Syzygium cumini)

description: Abstract The market for ready-to-drink fruit nectars is one of the fastest growing ones, because fruits provide beneficial effects for health maintenance and disease prevention, mainly due to the presence of phenolic compounds and their antioxidant activity. Amongst these, jambolan stands out, but is still little explored. The objective of the present work was to evaluate the influence of different proportions of jambolan pulp, sucrose and water on the physicochemical characteristics and sensory acceptance of jambolan nectars, besides determining the content of some bioactive compounds and the antioxidant capacity of the selected nectar, with a view to adding value to the fruit. Six jambolan nectar formulations were established using a Simplex design. The ingredients significantly affected the Chroma (9.33-11.05), Hue angle (359.36-359.48), apparent viscosity (6.9-64.8 cP) and pH (3.84-3.93) of the jambolan nectars. The formulation with 55 g of jambolan pulp, 5 g of sucrose and 40 g of water per 100 g of nectar presented higher levels of anthocyanins when compared to tropical acai juice and camu-camu nectar. It is feasible to produce jambolan nectar with desirable physicochemical and sensory characteristics, rich in bioactive compounds, thus increasing the possibilities of applying this fruit as an ingredient in the food industry.
DOI: 10.6084/m9.figshare.7419848
title: Optimization of parameters technological to process tucupi and study of product stability

description: Abstract Tucupi is a product obtained from the fermentation and cooking of cassava root wastewater which is widely used in the popular cuisine of the North region of Brazil. This study employed an experimental design to select tucupi processing (fermentation and cooking times) as a function of residual cyanidric acid content and assess the stability of the product obtained. Although the design did not generate a predictive mathematical model, the trend plots and physicochemical and sensory tests indicated 24 h of fermentation and 40 min of cooking as process parameters. The tucupi prepared had pH 3.71, titratable acidity of 0.7 g lactic acid/100 mL, 93.91% moisture, 0.5% ashes, 0.52% proteins, 0.24% lipids, 4.83% carbohydrates, total and free cyanide of 6.97 and 1.31 mg HCN/L, respectively. No Salmonella spp., coagulase-positive Staphylococcus, Bacillus cereus , or thermotolerant coliforms were observed, whereas counts of mesophilic aerobic bacteria (1.3x102 CFU/g) and molds and yeasts (1.3x102 CFU/g) were low. Over 50 days of follow-up (stored at 10°C), the microbial load remained stable and no significant difference was found in physicochemical characteristics, however, the sensory analysis indicated a decrease in quality at 49 days of storage.
DOI: 10.7284/116406
title: Meteorological Station data collected during research cruise NH1417 using a SIO MET-System instrument system onboard the platform RV New Horizon

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7419845.v1
title: Physicochemical characteristics and sensory acceptance of jambolan nectars ( Syzygium cumini)

description: Abstract The market for ready-to-drink fruit nectars is one of the fastest growing ones, because fruits provide beneficial effects for health maintenance and disease prevention, mainly due to the presence of phenolic compounds and their antioxidant activity. Amongst these, jambolan stands out, but is still little explored. The objective of the present work was to evaluate the influence of different proportions of jambolan pulp, sucrose and water on the physicochemical characteristics and sensory acceptance of jambolan nectars, besides determining the content of some bioactive compounds and the antioxidant capacity of the selected nectar, with a view to adding value to the fruit. Six jambolan nectar formulations were established using a Simplex design. The ingredients significantly affected the Chroma (9.33-11.05), Hue angle (359.36-359.48), apparent viscosity (6.9-64.8 cP) and pH (3.84-3.93) of the jambolan nectars. The formulation with 55 g of jambolan pulp, 5 g of sucrose and 40 g of water per 100 g of nectar presented higher levels of anthocyanins when compared to tropical acai juice and camu-camu nectar. It is feasible to produce jambolan nectar with desirable physicochemical and sensory characteristics, rich in bioactive compounds, thus increasing the possibilities of applying this fruit as an ingredient in the food industry.
DOI: 10.6084/m9.figshare.7419848.v1
title: Optimization of parameters technological to process tucupi and study of product stability

description: Abstract Tucupi is a product obtained from the fermentation and cooking of cassava root wastewater which is widely used in the popular cuisine of the North region of Brazil. This study employed an experimental design to select tucupi processing (fermentation and cooking times) as a function of residual cyanidric acid content and assess the stability of the product obtained. Although the design did not generate a predictive mathematical model, the trend plots and physicochemical and sensory tests indicated 24 h of fermentation and 40 min of cooking as process parameters. The tucupi prepared had pH 3.71, titratable acidity of 0.7 g lactic acid/100 mL, 93.91% moisture, 0.5% ashes, 0.52% proteins, 0.24% lipids, 4.83% carbohydrates, total and free cyanide of 6.97 and 1.31 mg HCN/L, respectively. No Salmonella spp., coagulase-positive Staphylococcus, Bacillus cereus , or thermotolerant coliforms were observed, whereas counts of mesophilic aerobic bacteria (1.3x102 CFU/g) and molds and yeasts (1.3x102 CFU/g) were low. Over 50 days of follow-up (stored at 10°C), the microbial load remained stable and no significant difference was found in physicochemical characteristics, however, the sensory analysis indicated a decrease in quality at 49 days of storage.
DOI: 10.6084/m9.figshare.7419851.v1
title: Species – specific PCR test for the quick recognition of equine tissue in raw and processed beef meat mixtures

description: Abstract PCR was applied for the discovery of adulteration of crude and processed beef meat with horse and donkey tissue. This was performed by blending (w/w) horse or donkey meat to beef meat in an extent up to 1:10000 (0.01%). The sensitivity was resolved as high as 0.01%. All used primers showed specificity in the PCR reactions utilizing layout DNAs from three animal species. PCR application on 96 beef meat and meat product samples gathered randomly from street vendors and prominent retail markets (24 of burger, 16 of minced meat, 24 of kofta, 16 of sausage, 7 of raw meat and 9 of launcheon) uncovered 6 positive for donkey tissue (3 from sausage, 2 from minced meat and 1 from kofta) and 2 positive for horse tissue (from sausage). This basic PCR strategy effectively distinguished adulteration of raw and processed beef meat samples with horse and donkey tissue. This work also highlights on the severity of the meat adulteration problem in Egypt.
DOI: 10.6084/m9.figshare.7419839
title: Modeling of stem form and volume through machine learning

description: Abstract Taper functions and volume equations are essential for estimation of the individual volume, which have consolidated theory. On the other hand, mathematical innovation is dynamic, and may improve the forestry modeling. The objective was analyzing the accuracy of machine learning (ML) techniques in relation to a volumetric model and a taper function for acácia negra. We used cubing data, and fit equations with Schumacher and Hall volumetric model and with Hradetzky taper function, compared to the algorithms: k nearest neighbor (k-NN), Random Forest (RF) and Artificial Neural Networks (ANN) for estimation of total volume and diameter to the relative height. Models were ranked according to error statistics, as well as their dispersion was verified. Schumacher and Hall model and ANN showed the best results for volume estimation as function of dap and height. Machine learning methods were more accurate than the Hradetzky polynomial for tree form estimations. ML models have proven to be appropriate as an alternative to traditional modeling applications in forestry measurement, however, its application must be careful because fit-based overtraining is likely.
DOI: 10.6084/m9.figshare.7419842
title: Physical-chemical and biochemical characterization of Buchenavia tomentosa Eichler fruits

description: Abstract The wild native species of the Brazilian savannah have attractive flavors and nutritive compounds. Among the Combretaceaes genus, the Buchenavia tomentosa Eichler plays an important role in popular medicine, however, little is known about its chemical composition. Thus, in order to a chemical-biological prospection in fruits of the Tocantins savannah, the aim of this work was to characterize the B. tomentosa fruits collected in the central and southern regions of Tocantins State, about some of its physical, physical-chemical and biochemical properties. The fruits, for this study, were collected in two regions (Palmas and Gurupi) in Tocantins State and analyzed in the parameters: coloration, centesimal composition, pectin, soluble solids, pH and acidity, vitamin C content and phenolic compounds. The study obtained results demonstrate that the fruits are of a light yellow color, are acidic, have high values of °Brix and glycidic fraction (carbohydrates). However, the high levels of vitamin C (1.26 to 3.57 g ascorbic acid per 100 g of pulp) and phenolic compounds (2.93 to 4.20 g GAE 100 g-1) are noteworthy. This study evidences a great nutritional potential for the fruits of B. tomentosa.
DOI: 10.6084/m9.figshare.7419836
title: EVALUATION OF THE RESULTS OF PELVIC FIXATION IN LONG LUMBOSACRAL INSTRUMENTATIONS IN ELDERLY PATIENTS

description: ABSTRACT Objective: Evaluate the initial results and the possible complications of the combination of pelvic fixation using iliac screws in long instrumentations of the lumbar spine in elderly patients. Methods: An analysis of 38 patients who underwent lumbar spine arthrodesis instrumentation with more than 3 levels, in which we included level L5-S1 and extended the fixation to the iliac crest. Radiological assessment of instrumentation through X-ray of the lumbar spine and pelvis, and computed tomography, to investigate the presence of radiological fusion. Clinical evaluation through a questionnaire of buttock pain including the visual analogue pain score (VAS). Complications related to pelvic instrumentation were investigated. Results: All patients had radiological fusion in the lumbosacral transition. A halo was found around the iliac screw on imaging studies in 31% of patients, but without related symptoms. The questionnaire of buttock pain found that 15% of patients had some low intensity buttock pain (VAS 1-2) and no need to or interest in removing the screws. There was infection at the surgical site in 2% of cases, hematoma in the buttocks in 5%, and vertebral body fracture in the cranial level instrumented in 7% of cases. Conclusions: Pelvic fixation through the iliac screws proved to be effective in protecting the S1 screws in long instrumentations including the L5-S1 level in elderly patients, allowing the radiological bone fusion. The overall results for pain were satisfactory, based on a questionnaire of buttock pain. There are no signs of overload or degeneration of the sacroiliac joints in the early years after surgery. Level of Evidence IV; Case series - therapeutic study.