cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7244888
title: Bioactive compounds and antiradical activity in grape pomace flours from different cultivars dehydrated in a freeze dryer and in an oven

description: Abstract This study aimed to characterize the bioactive compounds and antiradical activity in grape pomace flours from the cultivars Cabernet Sauvignon, Merlot, Sauvignon Blanc and Sangiovese (Vitis vinifera), dehydrated either in an air circulation oven at 45 °C or a vacuum freeze dryer. The total and individual phenolic compounds, monomeric anthocyanins and antiradical activity were analysed by the ABTS and HOCl methods. The total loss of monomeric anthocyanins was higher for the cultivars Cabernet Sauvignon and Sangiovese dehydrated in the air circulation oven. All the freeze dried cultivars preserved a statistically higher index for the total phenolic compounds, the highest being the cultivar Sauvignon Blanc. In the individual analysis of these compounds the freeze dried samples showed higher average levels of all the flavonoids (epicatechin, catechin, quercetin, vanillic acid, rutin), whereas gallic, caffeic and ferulic acids were apparently not influenced by the drying method. All the samples dehydrated in the oven showed less free radical inhibition capacity than the freeze dried samples as determined by both IC50 methods. The ABTS method presented the best results for the freeze dried samples, that is, smaller amounts of the flours were able to inhibit at least 50% of the ABTS and HOCl free radical activities, with emphasis on the Merlot cultivar.
DOI: 10.6084/m9.figshare.7244891.v1
title: Postharvest quality, antioxidant activity and acceptability of strawberries grown in conventional and organic systems

description: Abstract The aim of this study was to evaluate the influence of organic and conventional cultivation systems and the cultivars on the postharvest quality, antioxidant activity and acceptability of strawberries. Strawberries of the cultivars Albion, Monterey and San Andreas were analysed with respect to the soluble solids content (SS), titratable acidity (TA), SS/TA ratio, fruit colour, vitamin C content, antioxidant activity by the DDPH method, mineral composition and acceptability. The cultivation systems and cultivars had different influences on the SS, TA, pH, SS/TA and colour of the strawberries. The vitamin C content of cv. Monterey was higher (78.68 mg ascorbic acid 100 g-1) than that of cv. San Andreas (70.28 mg ascorbic acid 100 g-1) in the conventional system, while in the organic system, the cultivars did not differ. Differences were not observed amongst the cultivars and cultivation conditions for antioxidant activity and the cultivation systems and cultivars had no effect on the P, Cu and Mg mineral contents. The conventionally cultivated strawberries of cv. Monterey obtained the highest value for acceptance (7.51) while the organically cultivated strawberries of cv. San Andreas received the lowest value (6.58).
DOI: 10.7284/135030
title: Water Temperature data collected during research cruise SKQ201905S using a HEITRONICS CT15.10 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244885
title: Effects of dance on the postural balance, cognition and functional autonomy of older adults

description: ABSTRACT Objective: to evaluate the postural balance, cognition and functional autonomy of older adults with dementia, who are long-stay inpatients, subjected to ballroom dancing. Method: simple randomized clinical study. Older adult sample: control group (30) and experimental group (30). The groups were subjected to the protocol of functional autonomy for activities of daily living; to the assessment of cognition (mini-mental state examination); and to the analysis of postural balance (stabilometric and postural platforms). The analysis of variance with repeated measures for group and time factors, and Scheffé’s post hoc test were used, with significance of p &lt; 0.05. Results: For the mini-mental state examination, the control group presented a 24.27 mean, and the experimental 22.75. Functional autonomy for activities of daily living – experimental: 54.47 ± 7.24 (p &lt; 0.0001) x control: 61.77 ± 8.47 (p = 0.011). Postural balance – experimental: X = 3.16 ± 3.44 (p = 0.02) x control = X = 6.30 ± 7.62 (p = 0.04). Conclusion: Ballroom dancing can be recommended for older adults to provide improvement in their balance and motor performance of the activities of daily living.
DOI: 10.6084/m9.figshare.7244885.v1
title: Effects of dance on the postural balance, cognition and functional autonomy of older adults

description: ABSTRACT Objective: to evaluate the postural balance, cognition and functional autonomy of older adults with dementia, who are long-stay inpatients, subjected to ballroom dancing. Method: simple randomized clinical study. Older adult sample: control group (30) and experimental group (30). The groups were subjected to the protocol of functional autonomy for activities of daily living; to the assessment of cognition (mini-mental state examination); and to the analysis of postural balance (stabilometric and postural platforms). The analysis of variance with repeated measures for group and time factors, and Scheffé’s post hoc test were used, with significance of p &lt; 0.05. Results: For the mini-mental state examination, the control group presented a 24.27 mean, and the experimental 22.75. Functional autonomy for activities of daily living – experimental: 54.47 ± 7.24 (p &lt; 0.0001) x control: 61.77 ± 8.47 (p = 0.011). Postural balance – experimental: X = 3.16 ± 3.44 (p = 0.02) x control = X = 6.30 ± 7.62 (p = 0.04). Conclusion: Ballroom dancing can be recommended for older adults to provide improvement in their balance and motor performance of the activities of daily living.
DOI: 10.6084/m9.figshare.7244888.v1
title: Bioactive compounds and antiradical activity in grape pomace flours from different cultivars dehydrated in a freeze dryer and in an oven

description: Abstract This study aimed to characterize the bioactive compounds and antiradical activity in grape pomace flours from the cultivars Cabernet Sauvignon, Merlot, Sauvignon Blanc and Sangiovese (Vitis vinifera), dehydrated either in an air circulation oven at 45 °C or a vacuum freeze dryer. The total and individual phenolic compounds, monomeric anthocyanins and antiradical activity were analysed by the ABTS and HOCl methods. The total loss of monomeric anthocyanins was higher for the cultivars Cabernet Sauvignon and Sangiovese dehydrated in the air circulation oven. All the freeze dried cultivars preserved a statistically higher index for the total phenolic compounds, the highest being the cultivar Sauvignon Blanc. In the individual analysis of these compounds the freeze dried samples showed higher average levels of all the flavonoids (epicatechin, catechin, quercetin, vanillic acid, rutin), whereas gallic, caffeic and ferulic acids were apparently not influenced by the drying method. All the samples dehydrated in the oven showed less free radical inhibition capacity than the freeze dried samples as determined by both IC50 methods. The ABTS method presented the best results for the freeze dried samples, that is, smaller amounts of the flours were able to inhibit at least 50% of the ABTS and HOCl free radical activities, with emphasis on the Merlot cultivar.
DOI: 10.6084/m9.figshare.7244882
title: The Bolsa Família Program evaluation

description: Abstract: The UN has set development goals and targets for its member states. Brazil has committed itself to these goals, including the fight against poverty and hunger. In 2004, the country created the Bolsa Família Program (PBF), a direct income transfer program for beneficiaries. This article evaluates the PBF through the Gini Index, Theil Index and the HDI of the Brazilian states, portraying the success of the PBF, which allowed, from 1990 to 2013, more than 20 million people to leave the poverty situation in Brazil.
DOI: 10.7284/135035
title: Water Temperature data collected during research cruise SKQ201905S using a Sea-Bird SBE-38 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244876
title: Compressive strength and economic viability of concrete blocks with ceramic brick residues

description: ABSTRACT Bricks and ceramic blocks are widely used in constructions of structural and non-structural masonry, providing adequate conditions of comfort to the indoor environment. The manufacture of these ceramic products implies discarding of damaged elements, due to non-conformity of dimensions, failures in the process of burning or breaking. The simple disposal of these pieces in landfills generates removal costs and environmental impacts, as well as the waste of material that still contains valuable physical and mechanical properties. In this context, the objective of the present work was to evaluate the viability of using aggregates from the ceramic brick residue in the concrete dosage to produce solid blocks for paving and masonry, concerning their compressive strength and the economics aspects. For this purpose, ceramic bricks were grounded in hammer mills to elaborate concrete mixtures with replacement of aggregates (fine and coarse). The mechanical performance of these blocks was evaluated by using a compression test as well as the economic feasibility of the waste recovery process in a five-year horizon for different scenarios. The results indicate that blocks produced with substitution of 80% of fine aggregate presented a high mechanical performance and economic viability. It is concluded that production of blocks for paving and masonry is a viable solution for the recovery and destination of waste from the ceramic industry.
DOI: 10.6084/m9.figshare.7244879
title: Evaluation of the increase fly ash reactivity through the sonochemistry method

description: ABSTRACT The objective of this work was to evaluate the increase of fly ash reactivity (CV) through the sonochemistry method combined with the CV siphoning process, in order to separate constituent materials by phases, being amorphous and crystalline. After that, sonochemistry treatments were performed in two types of equipment as a way of comparison. The treated materials were characterized by the techniques of particle size, specific mass, surface area, chemical and mineralogical composition, and, finally, molded according to the norm NBR 5752: 2014. The modified Chapelle method was also applied to verify the consumption of calcium hydroxide. As a complementary study, microstructural analysis of CV was performed before and after the application of the sonochemistry method using scanning electron microscopy. The results of compressive strength proved that the method used contributed to an increase from 84 to 112.9% of the pozzolanicity index of the material associated with the application of ultrasound. The samples CV NAT, CV ULT SP and CV ULT UNI were able to fix higher amount of lime than CV SIF. However, the index of pozzolanic activity, through indirect hierarchization indicates a favorable behavior with the possibility, even, of declassifying the CV as pozzolanic material, if it is not submitted to a beneficiation process.. In microstructural images there was a reduction in particle size, probably caused by the breakdown of the CV pleospheres.
DOI: 10.6084/m9.figshare.7244882.v1
title: The Bolsa Família Program evaluation

description: Abstract: The UN has set development goals and targets for its member states. Brazil has committed itself to these goals, including the fight against poverty and hunger. In 2004, the country created the Bolsa Família Program (PBF), a direct income transfer program for beneficiaries. This article evaluates the PBF through the Gini Index, Theil Index and the HDI of the Brazilian states, portraying the success of the PBF, which allowed, from 1990 to 2013, more than 20 million people to leave the poverty situation in Brazil.
DOI: 10.6084/m9.figshare.7244876.v1
title: Compressive strength and economic viability of concrete blocks with ceramic brick residues

description: ABSTRACT Bricks and ceramic blocks are widely used in constructions of structural and non-structural masonry, providing adequate conditions of comfort to the indoor environment. The manufacture of these ceramic products implies discarding of damaged elements, due to non-conformity of dimensions, failures in the process of burning or breaking. The simple disposal of these pieces in landfills generates removal costs and environmental impacts, as well as the waste of material that still contains valuable physical and mechanical properties. In this context, the objective of the present work was to evaluate the viability of using aggregates from the ceramic brick residue in the concrete dosage to produce solid blocks for paving and masonry, concerning their compressive strength and the economics aspects. For this purpose, ceramic bricks were grounded in hammer mills to elaborate concrete mixtures with replacement of aggregates (fine and coarse). The mechanical performance of these blocks was evaluated by using a compression test as well as the economic feasibility of the waste recovery process in a five-year horizon for different scenarios. The results indicate that blocks produced with substitution of 80% of fine aggregate presented a high mechanical performance and economic viability. It is concluded that production of blocks for paving and masonry is a viable solution for the recovery and destination of waste from the ceramic industry.
DOI: 10.6084/m9.figshare.7244873
title: Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

description: ABSTRACT The present work investigated properties of red ceramic from the Amazonian region after the addition of kaolin and bauxite mixture with 0, 10, 20 and 30%wt. in red ceramic industry clay. Assessed mechanical properties were flexural strength and Young's modulus. The assessed physical properties were density and porosity. The microstructural images were assessed with SEM and OM microscopies. The fired samples XRD, the raw materials XRF and the XRD were made for chemical composition and present phases assessments. Samples were manufactured by uniaxial compaction and fired at 1200°C and 1250°C. Samples without the mixture of kaolin/bauxite presented higher assessed properties, with approximately 32 MPa of flexural strength and 12% of porosity with 2.3 g/cm3 density. Although the initial idea of this work was to add the mixture of kaolin/bauxite in the red ceramic industry clay for improving assessed properties of red ceramic fired parts, the red ceramic industry clay without addition presented better properties. Such properties were attributed to the high aluminous materials content in the raw material. This behaviour is correlated to the fact that bauxite from this region presents 55%wt. of iron oxide content with aluminium oxide content lower than 25%wt. Additionally, the assessed properties of the ceramic industry parts fired at 1250°C presented this material as promising material for ceramic products with a better added value.
DOI: 10.6084/m9.figshare.7244879.v1
title: Evaluation of the increase fly ash reactivity through the sonochemistry method

description: ABSTRACT The objective of this work was to evaluate the increase of fly ash reactivity (CV) through the sonochemistry method combined with the CV siphoning process, in order to separate constituent materials by phases, being amorphous and crystalline. After that, sonochemistry treatments were performed in two types of equipment as a way of comparison. The treated materials were characterized by the techniques of particle size, specific mass, surface area, chemical and mineralogical composition, and, finally, molded according to the norm NBR 5752: 2014. The modified Chapelle method was also applied to verify the consumption of calcium hydroxide. As a complementary study, microstructural analysis of CV was performed before and after the application of the sonochemistry method using scanning electron microscopy. The results of compressive strength proved that the method used contributed to an increase from 84 to 112.9% of the pozzolanicity index of the material associated with the application of ultrasound. The samples CV NAT, CV ULT SP and CV ULT UNI were able to fix higher amount of lime than CV SIF. However, the index of pozzolanic activity, through indirect hierarchization indicates a favorable behavior with the possibility, even, of declassifying the CV as pozzolanic material, if it is not submitted to a beneficiation process.. In microstructural images there was a reduction in particle size, probably caused by the breakdown of the CV pleospheres.
DOI: 10.7284/135176
title: ADCP (Acoustic Doppler Current Profiler) data collected during research cruise SKQ201907T using a Hawaii UHDAS instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244867
title: Commercial flame retardants in four varieties of eucalyptus

description: ABSTRACT: The objective of this work was to verify the flame retardancy capacity of two commercial products applied in four forest species (Eucalyptus saligna, Eucalyptus dunnii, Corymbia maculata and Eucalyptus grandis) evaluating their loss of mass throughout the combustion process and the behavior of the when subjected to high temperatures. In this, 9 samples of each species were used. For the physical characterization of the species (apparent mass (g/cm3) and porosity (%)), 15 samples of each were prepared, totalizing 96 randomly selected test pieces (2.5 x 2.5 x 2.5cm). All were stabilized at 12% humidity in a heated room. Then, with the aid of a brush, three layers of the products tested on the samples were applied, and these were applied at 24 hour intervals. The dilution of the products obeyed the recommendations of their manufacturers. For the combustion of the samples, a Bunsen nozzle was used, where the samples were subjected to the flame of oxidation until the loss of 80% of its mass over time. During the combustion process, every 30 seconds, the mass loss occurred in the sample in this time interval. Thus, it was possible to obtain curves that allowed to analyze and to characterize the thermal resistance of the wood based on the loss of mass of the different species studied here. Both products proved to be effective as regards the retarding ability of mass loss of samples when at high temperatures, but the product based on nitrogen and borates is more efficient compared to the product based on synthetic resin pigmented with flame retardant additives (flame retardant paint). Regarding the effectiveness of these on the woods, the results vary according to the species studied and this possibly due to the chemical composition of each variety.
DOI: 10.6084/m9.figshare.7244870
title: Influence of the use of accelerating admixture based on calcium nitrate in the performance of fly ash blended Portland cement mortars.

description: ABSTRACT Civil construction tends to require the optimization of processes with reduced times. Therefore, it is necessary to search for alternatives that provide the required properties to the concrete, in shorter periods of time. The objective of this work is to evaluate the influence of a calcium nitrate based accelerator admixture on the properties of Portland cement mortars with different fly ash (FA) contents, in order to analyze the effect in the incorporation of the admixture, mainly if the accelerator is able to compensate the low strength contribution of the FA at early ages. Tests were carried out using isothermal calorimetry, water absorption by capillarity, consistency index and compressive strength in mixtures with admixture contents of 0%, 0,33%, 0,66% and 1,00%. Regarding setting time results, as excepted the admixture accelerated the final setting time. By the other hand, in the samples with 40% and 60% of FA, an increase of the final setting time was verified. For the 1-day compressive strengths, the admixture content that have generated the highest values was 1.00% for mortars with 0% and 40% FA. At higher ages, the admixtures led to reduce the compressive strength values of the samples without FA. On the other hand, in the samples with 40% and 60% of FA with the use of the accelerator higher compressive strength were identified. It was verified that the mortars with admixture and without addition of FA showed a reduction in the absorption index by capillarity. For the samples with 40% and 60% of FA, the lower absorption index was obtained in the samples without admixture. Therefore, it is possible to conclude that the admixture evaluated in this research accelerated the hydration reactions, generating an increase in the compressive strength at early ages, but with an insufficient increase to compensate the lower reactivity of the FA. Taking into account the different properties evaluated, it was not possible to establish an optimum admixture content for each FA content. It is necessary to evaluate which property is of greater interest to the user.
DOI: 10.6084/m9.figshare.7244873.v1
title: Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

description: ABSTRACT The present work investigated properties of red ceramic from the Amazonian region after the addition of kaolin and bauxite mixture with 0, 10, 20 and 30%wt. in red ceramic industry clay. Assessed mechanical properties were flexural strength and Young's modulus. The assessed physical properties were density and porosity. The microstructural images were assessed with SEM and OM microscopies. The fired samples XRD, the raw materials XRF and the XRD were made for chemical composition and present phases assessments. Samples were manufactured by uniaxial compaction and fired at 1200°C and 1250°C. Samples without the mixture of kaolin/bauxite presented higher assessed properties, with approximately 32 MPa of flexural strength and 12% of porosity with 2.3 g/cm3 density. Although the initial idea of this work was to add the mixture of kaolin/bauxite in the red ceramic industry clay for improving assessed properties of red ceramic fired parts, the red ceramic industry clay without addition presented better properties. Such properties were attributed to the high aluminous materials content in the raw material. This behaviour is correlated to the fact that bauxite from this region presents 55%wt. of iron oxide content with aluminium oxide content lower than 25%wt. Additionally, the assessed properties of the ceramic industry parts fired at 1250°C presented this material as promising material for ceramic products with a better added value.