cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7244924.v1
title: Study of incorporation of footwear industry residues in asphalt mixtures

description: ABSTRACT The footwear industry discards residues in its most diverse phases of production, the Ethylene Vinyl Acetate (EVA) being one of them. This work proposes an evaluation of the use of EVA’s residue discarded by the footwear industry of Campina Grande city in asphalt mixtures. The modified asphalt binder was characterized by penetration test, softening point, and rotational viscosity. The asphalt mixture was prepared through the SUPERPAVE methodology. The EVA’s residue incorporated to Petroleum Asphalt Cement (CAP) through the wet process in percentages of 0, 2, 3, 4 and 5 % in mass. Among the asphalt mixtures analyzed, the mixtures that contain 2% of EVA residue and 3 hours of aging were the most important, as they met the minimum criteria for Resistance to induced moisture damage (Lottman). The results show that EVA`s residues are an effective alternative for use in asphalt paving.
DOI: 10.7284/135034
title: Multibeam Echosounder data collected during research cruise SKQ201905S using a Kongsberg EM302 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244915
title: The effects of Sucrose/NaCl/Time interactions on the osmotic dehydration of banana slices

description: Abstract The objective of this work was to study the mass transfer kinetics during the osmotic dehydration of banana slices in an osmotic solution prepared by combining sugar with salt. Two levels of sucrose concentration (50 and 60 °Bx), three levels of NaCl content (0, 5% and 10% w/v) and four time levels (90, 180, 270 and 360 min) were applied according to the full factorial technique. The experiments were carried out with three replications and the means analyzed using response surface methodology (RSM). The experimental data revealed that the water loss increased with increase in time, sucrose and salt contents. According to the data obtained the minimum and maximum water losses observed were 9.0% (at 50 °Bx, 0% salt and 90 min) and 46.5% (at 60 °Bx, 10% salt and 360 min), respectively. Furthermore, a small portion of salt was found to reduce the solids gain while the sugar content and time increased it. The effects of all the parameters were significant for water loss, while only those of sucrose content, time and the interaction of salt with sucrose were significant for solids gain. Based on Fick’s second law, the effective diffusivity of water in banana slices was evaluated in the range from 5.67×10-9 to 9.11×10-9 m 2/s for the solutions studied.
DOI: 10.6084/m9.figshare.7244918.v1
title: Insights on the epigenetic mechanisms underlying pulmonary arterial hypertension

description: Pulmonary arterial hypertension (PAH), characterized by localized increased arterial blood pressure in the lungs, is a slow developing long-term disease that can be fatal. PAH is characterized by inflammation, vascular tone imbalance, pathological pulmonary vascular remodeling, and right-sided heart failure. Current treatments for PAH are palliative and development of new therapies is necessary. Recent and relevant studies have demonstrated that epigenetic processes may exert key influences on the pathogenesis of PAH and may be promising therapeutic targets in the prevention and/or cure of this condition. The aim of the present mini-review is to summarize the occurrence of epigenetic-based mechanisms in the context of PAH physiopathology, focusing on the roles of DNA methylation, histone post-translational modifications and non-coding RNAs. We also discuss the potential of epigenetic-based therapies for PAH.
DOI: 10.6084/m9.figshare.7244906
title: Analysis of the influence of meshes used as reinforcement for mortar coating of facades on the tensile strength

description: ABSTRACT Displacement and fissures are recurrent pathological manifestations in the facade coating of brazilian buildings. In this context, it is known that mortar coating is still the most used in the civil construction market and has demonstrated several problems due to inappropriate employment and execution. Therefore, the present work aimed to evaluate the influence of different meshes as reinforcement for mortar coating, in order to identify which one present the best performance. It was used three mesh models, two made of galvanized metal with different meshes and thicknesses and one made of high-density polyethylene. In order to isolated characterize the meshes for tensile strength, it was performed the tensile assay in specimens of 250x300 mm for each mesh models. To evaluate the influence of the different meshes in conjunction with the mortar, the tensile test in bending at 4 points in specimens of 200x500 mm was carried out, where the meshes were inserted at 15, 25 and 30 mm from the bottom of the specimen with 50 mm thickness. The data indicate that the square 25x25 mm and 1.24 mm wire galvanized metal mesh presented the best performance among the tested models.
DOI: 10.6084/m9.figshare.7244909
title: Identifying microorganisms related to copper bioleaching at 35 and 50°C

description: ABSTRACT Bioleaching is an alternative to pyrometallurgy for the production of metals from low-grade ores containing high level of impurities, once that live pyrometallurgical methods are economically unfeasible. The quantification and identification of those microorganisms related to bioleaching is an important strategy for process control and thus metal recovery. In this regard, molecular biology is one of the main techniques utilized for such objective. This study applied PCR, RFLP and PCR-DGGE techniques to show that the microbial diversity in copper bioleaching columns under investigation is low and the temperature is important to define the species found, with predominance of Acidithiobacillus ferroxidans, at 35°C and Sulfobacillus thermosulfidooxidans at 50°C.
DOI: 10.6084/m9.figshare.7244915.v1
title: The effects of Sucrose/NaCl/Time interactions on the osmotic dehydration of banana slices

description: Abstract The objective of this work was to study the mass transfer kinetics during the osmotic dehydration of banana slices in an osmotic solution prepared by combining sugar with salt. Two levels of sucrose concentration (50 and 60 °Bx), three levels of NaCl content (0, 5% and 10% w/v) and four time levels (90, 180, 270 and 360 min) were applied according to the full factorial technique. The experiments were carried out with three replications and the means analyzed using response surface methodology (RSM). The experimental data revealed that the water loss increased with increase in time, sucrose and salt contents. According to the data obtained the minimum and maximum water losses observed were 9.0% (at 50 °Bx, 0% salt and 90 min) and 46.5% (at 60 °Bx, 10% salt and 360 min), respectively. Furthermore, a small portion of salt was found to reduce the solids gain while the sugar content and time increased it. The effects of all the parameters were significant for water loss, while only those of sucrose content, time and the interaction of salt with sucrose were significant for solids gain. Based on Fick’s second law, the effective diffusivity of water in banana slices was evaluated in the range from 5.67×10-9 to 9.11×10-9 m 2/s for the solutions studied.
DOI: 10.7284/135024
title: Radiometer data collected during research cruise SKQ201905S using a RMR Co. PRP instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244903
title: Classification of mortars with incorporation of phase change materials based on their physical, mechanical and thermal properties

description: ABSTRACT Currently, there are several mortars available for application in the construction industry. These mortars can be based on different binders, have different physical and mechanical properties and even other specific properties. However, the correct selection of a mortar becomes increasingly difficult. Thus, comes up the need to classify different mortars based on a specific criteria and a single procedure. In this way, it will be possible to identify the most appropriate mortars according to their function. In this research, a materials ranking procedure developed by Czarnecki and Lukowski is applied, based on an usability function. The ranking procedure transforms experimental results of properties into one numerical value. The products can be classified according to their individual properties or even an optimized combination of different properties. Thus, the main purpose of this study was the ranking of mortars based in different binders with incorporation of phase change materials. Hydraulic lime, gypsum and cement were the binders studied. For each binder, three different mortars were developed, reference mortars (0% PCM), mortars with incorporation of 40% of PCM and mortars with incorporation of 40% of PCM and 1% of fibers. Based on the results it was possible to conclude that the incorporation of PCM in mortars changes their global performance.
DOI: 10.6084/m9.figshare.7244906.v1
title: Analysis of the influence of meshes used as reinforcement for mortar coating of facades on the tensile strength

description: ABSTRACT Displacement and fissures are recurrent pathological manifestations in the facade coating of brazilian buildings. In this context, it is known that mortar coating is still the most used in the civil construction market and has demonstrated several problems due to inappropriate employment and execution. Therefore, the present work aimed to evaluate the influence of different meshes as reinforcement for mortar coating, in order to identify which one present the best performance. It was used three mesh models, two made of galvanized metal with different meshes and thicknesses and one made of high-density polyethylene. In order to isolated characterize the meshes for tensile strength, it was performed the tensile assay in specimens of 250x300 mm for each mesh models. To evaluate the influence of the different meshes in conjunction with the mortar, the tensile test in bending at 4 points in specimens of 200x500 mm was carried out, where the meshes were inserted at 15, 25 and 30 mm from the bottom of the specimen with 50 mm thickness. The data indicate that the square 25x25 mm and 1.24 mm wire galvanized metal mesh presented the best performance among the tested models.
DOI: 10.6084/m9.figshare.7244909.v1
title: Identifying microorganisms related to copper bioleaching at 35 and 50°C

description: ABSTRACT Bioleaching is an alternative to pyrometallurgy for the production of metals from low-grade ores containing high level of impurities, once that live pyrometallurgical methods are economically unfeasible. The quantification and identification of those microorganisms related to bioleaching is an important strategy for process control and thus metal recovery. In this regard, molecular biology is one of the main techniques utilized for such objective. This study applied PCR, RFLP and PCR-DGGE techniques to show that the microbial diversity in copper bioleaching columns under investigation is low and the temperature is important to define the species found, with predominance of Acidithiobacillus ferroxidans, at 35°C and Sulfobacillus thermosulfidooxidans at 50°C.
DOI: 10.6084/m9.figshare.7244900
title: Sizing optimization in Solar Photovoltaic Water Pumping System: model validation in a pilot unit located in the rural community of Rio Belo, Orleans/SC, Brazil

description: ABSTRACT The management of water and energy resources are the main challenges that contemporary society faces nowadays. Water and energy are fundamental factors for socio-economic development of the communities, especially those in remote locations, and in this case the lack of energy is the most worrying aspect. Solar photovoltaic pumping systems have advantages for insertion in isolated communities, such as easy installation and low maintenance during the life cycle, but inappropriate sizing can create unnecessary costs or affect the water supply. Simulating performance favors the system’s sizing and allows achieving technical and economic optimization of these technology projects. This study proposes a mathematical model of simulation, use of the Generalized Reduced Gradient (GRG), solar radiation regional data, and water consumption, wells’ productivity and pumping system capacity to obtain this optimization. The model was validated in a pilot system, located in a rural community in the city of Orleans, State of Santa Catarina, Brazil. The place has one of the lowest average annual radiation in the country, approximately 4.5 kWh / m2.day. The simulation performed in the natural pilot system conditions presented results very close to the monitored behavior, thus demonstrating its efficiency. Using this tool assists in the decision-making process in designing projects and benefits the communities with access to water and energy, bringing benefits in all spheres: social, environmental and economic.
DOI: 10.7284/135025
title: Singlebeam Echosounder data collected during research cruise SKQ201905S using a Kongsberg TOPAS PS-18 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244900.v1
title: Sizing optimization in Solar Photovoltaic Water Pumping System: model validation in a pilot unit located in the rural community of Rio Belo, Orleans/SC, Brazil

description: ABSTRACT The management of water and energy resources are the main challenges that contemporary society faces nowadays. Water and energy are fundamental factors for socio-economic development of the communities, especially those in remote locations, and in this case the lack of energy is the most worrying aspect. Solar photovoltaic pumping systems have advantages for insertion in isolated communities, such as easy installation and low maintenance during the life cycle, but inappropriate sizing can create unnecessary costs or affect the water supply. Simulating performance favors the system’s sizing and allows achieving technical and economic optimization of these technology projects. This study proposes a mathematical model of simulation, use of the Generalized Reduced Gradient (GRG), solar radiation regional data, and water consumption, wells’ productivity and pumping system capacity to obtain this optimization. The model was validated in a pilot system, located in a rural community in the city of Orleans, State of Santa Catarina, Brazil. The place has one of the lowest average annual radiation in the country, approximately 4.5 kWh / m2.day. The simulation performed in the natural pilot system conditions presented results very close to the monitored behavior, thus demonstrating its efficiency. Using this tool assists in the decision-making process in designing projects and benefits the communities with access to water and energy, bringing benefits in all spheres: social, environmental and economic.
DOI: 10.6084/m9.figshare.7244903.v1
title: Classification of mortars with incorporation of phase change materials based on their physical, mechanical and thermal properties

description: ABSTRACT Currently, there are several mortars available for application in the construction industry. These mortars can be based on different binders, have different physical and mechanical properties and even other specific properties. However, the correct selection of a mortar becomes increasingly difficult. Thus, comes up the need to classify different mortars based on a specific criteria and a single procedure. In this way, it will be possible to identify the most appropriate mortars according to their function. In this research, a materials ranking procedure developed by Czarnecki and Lukowski is applied, based on an usability function. The ranking procedure transforms experimental results of properties into one numerical value. The products can be classified according to their individual properties or even an optimized combination of different properties. Thus, the main purpose of this study was the ranking of mortars based in different binders with incorporation of phase change materials. Hydraulic lime, gypsum and cement were the binders studied. For each binder, three different mortars were developed, reference mortars (0% PCM), mortars with incorporation of 40% of PCM and mortars with incorporation of 40% of PCM and 1% of fibers. Based on the results it was possible to conclude that the incorporation of PCM in mortars changes their global performance.
DOI: 10.6084/m9.figshare.7244894
title: Influence of the viscosity of the alkaline activator solution on the workability of geopolymer mortars

description: ABSTRACT This work evaluated the influence of the viscosity of the alkaline activator solution on the workability of geopolymeric mortars. For this, eight mortars were made using commercial metakaolin as a precursor, sand and two simple types of activator alkaline solution. The workability was evaluated through the flow-table test, based on NBR 13276 (2016), and through the squeeze-flow test, based on NBR 15839 (2010). The results indicated that the type of activator used has influence on the viscosity of the alkaline solution and this affects the viscosity of the geopolymer mortars. Both flow-table and squeeze-flow tests proved to be representative and followed the same downward trend in the mortar workability as the viscosity of the activator solution increases.
DOI: 10.6084/m9.figshare.7244897
title: Simultaneous Determination of Four Antibiotics in Raw Milk by UPLC-MS/MS Using Protein Precipitation as Sample Preparation: Development, Validation, and Application in Real Samples

description: In this study, a rapid and simple analytical method was proposed, based on protein precipitation as sample preparation for simultaneous determination of tetracycline, oxytetracycline, penicillin G and ceftiofur in raw milk by ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). The method was applied to raw milk samples from dairy cows medicated with tetracycline for subclinical mastitis. Samples were collected from the adjacent teat to the teat treated with tetracycline of eight different cows at 24, 48, 72 and 96 h after treatment. The limits of quantification of the proposed method ranged between 1 and 5 ng g-1 and limits of detection ranged between 0.1 and 0.5 ng g-1. The recoveries ranged from 61 to 111% and the linear range was 1 to 2064 ng g-1 for tetracycline and oxytetracycline, and 5 to 2064 ng g-1 for penicillin G and ceftiofur. Approximately 75 and 63% of the treated animals revealed more tetracycline than legally recommended at 72 and 96 h since last treatment, respectively.
DOI: 10.6084/m9.figshare.7244894.v1
title: Influence of the viscosity of the alkaline activator solution on the workability of geopolymer mortars

description: ABSTRACT This work evaluated the influence of the viscosity of the alkaline activator solution on the workability of geopolymeric mortars. For this, eight mortars were made using commercial metakaolin as a precursor, sand and two simple types of activator alkaline solution. The workability was evaluated through the flow-table test, based on NBR 13276 (2016), and through the squeeze-flow test, based on NBR 15839 (2010). The results indicated that the type of activator used has influence on the viscosity of the alkaline solution and this affects the viscosity of the geopolymer mortars. Both flow-table and squeeze-flow tests proved to be representative and followed the same downward trend in the mortar workability as the viscosity of the activator solution increases.
DOI: 10.7284/135026
title: Singlebeam Echosounder data collected during research cruise SKQ201905S using a L-3 ELAC LAZ 5100 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244891
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: 10.6084/m9.figshare.7244897.v1
title: Simultaneous Determination of Four Antibiotics in Raw Milk by UPLC-MS/MS Using Protein Precipitation as Sample Preparation: Development, Validation, and Application in Real Samples

description: In this study, a rapid and simple analytical method was proposed, based on protein precipitation as sample preparation for simultaneous determination of tetracycline, oxytetracycline, penicillin G and ceftiofur in raw milk by ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). The method was applied to raw milk samples from dairy cows medicated with tetracycline for subclinical mastitis. Samples were collected from the adjacent teat to the teat treated with tetracycline of eight different cows at 24, 48, 72 and 96 h after treatment. The limits of quantification of the proposed method ranged between 1 and 5 ng g-1 and limits of detection ranged between 0.1 and 0.5 ng g-1. The recoveries ranged from 61 to 111% and the linear range was 1 to 2064 ng g-1 for tetracycline and oxytetracycline, and 5 to 2064 ng g-1 for penicillin G and ceftiofur. Approximately 75 and 63% of the treated animals revealed more tetracycline than legally recommended at 72 and 96 h since last treatment, respectively.