cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5719270.v1
title: The use of Andragogy in civil construction capacity building courses

description: Abstract The lack of skilled labor is a major constraint within the civil construction sector. Major works on the subject show that despite the increasing efforts to improve the workforce in recent years, many have proven unsatisfactory. Given employers’ high demand for qualified employees, we created a training program based on Andragogy, a theory for adult learning. There are numerous contributions to the field literature seeking to understand how adults learn, but they fail to provide practical applications of Andragogy, mainly regarding continuous professional education. Thus, we followed training programs focused on construction workers in order to analyze whether andragogical assumptions have been employed. Questionnaires were applied to determine the degree to which students apply each principle of learning for adults. Next, we developed a training program for structural masonry, divided into two courses in order to identify difficulties and the application of Andragogy through the actions proposed. This enables us to endorse the importance of taking this theory into consideration in courses focused on civil construction, since satisfactory outcomes were reached in terms of learning and motivation for participation in the program.
DOI: 10.6084/m9.figshare.5719264
title: Impact of critical illness news on the family: hermeneutic phenomenological study

description: ABSTRACT Objective: Understand the impact of critical-illness news on the experience of family members at an Intensive Care Unit. Method: Phenomenological approach according to Van Manen's method. Open interviews were held with 21 family members. From analysis and interpretation of the data, three essential themes were identified: the unexpected; the pronouncement of death; and the impact on self-caring within the family. The study complied with the ethical principles inherent to research involving humans. Results: The unexpected news and death of the sick person influence the well-being and self-care of family members, affecting their ability for analysis and decision making. It was observed that the family experiences the news with suffering, mainly due to the anticipation arising from the events. Final considerations: The humanity of nurses was revealed in response to the needs of the family. In view of the requirements for information, it was verified that the information transmitted allowed them to become aware of themselves, to become empowered in their daily lives and to alleviate the emotional burden experienced.
DOI: 10.6084/m9.figshare.5719264.v1
title: Impact of critical illness news on the family: hermeneutic phenomenological study

description: ABSTRACT Objective: Understand the impact of critical-illness news on the experience of family members at an Intensive Care Unit. Method: Phenomenological approach according to Van Manen's method. Open interviews were held with 21 family members. From analysis and interpretation of the data, three essential themes were identified: the unexpected; the pronouncement of death; and the impact on self-caring within the family. The study complied with the ethical principles inherent to research involving humans. Results: The unexpected news and death of the sick person influence the well-being and self-care of family members, affecting their ability for analysis and decision making. It was observed that the family experiences the news with suffering, mainly due to the anticipation arising from the events. Final considerations: The humanity of nurses was revealed in response to the needs of the family. In view of the requirements for information, it was verified that the information transmitted allowed them to become aware of themselves, to become empowered in their daily lives and to alleviate the emotional burden experienced.
DOI: 10.6084/m9.figshare.5719258
title: Preparation of Au/TiO2 Catalyst by a Liquid-Phase Reduction Method for Preferential Oxidation of Carbon Monoxide in a Hydrogen Rich-Stream (CO-PROX reaction)

description: Au nanoparticles supported on TiO2 were prepared by a liquid-phase reduction method using HAuCl4.3H2O as the Au precursor, TiO2 as the support, a solution of ethylene glycol/water as solvent and reducing agent and sodium citrate as reducing agent and stabilizer. The Au/TiO2 catalysts were prepared using different routes and characterized by Energy-dispersive X-ray spectroscopy, X-ray diffraction and Transmission Electron Microscopy and tested for preferential oxidation of carbon monoxide in hydrogen-rich stream (CO-PROX reaction). The way that the Au precursor, the TiO2 support and the sodium citrate is added to the ethylene glycol/water solution strongly influences the Au nanoparticle sizes and the catalytic activity of the obtained materials.
DOI: 10.6084/m9.figshare.5719258.v1
title: Preparation of Au/TiO2 Catalyst by a Liquid-Phase Reduction Method for Preferential Oxidation of Carbon Monoxide in a Hydrogen Rich-Stream (CO-PROX reaction)

description: Au nanoparticles supported on TiO2 were prepared by a liquid-phase reduction method using HAuCl4.3H2O as the Au precursor, TiO2 as the support, a solution of ethylene glycol/water as solvent and reducing agent and sodium citrate as reducing agent and stabilizer. The Au/TiO2 catalysts were prepared using different routes and characterized by Energy-dispersive X-ray spectroscopy, X-ray diffraction and Transmission Electron Microscopy and tested for preferential oxidation of carbon monoxide in hydrogen-rich stream (CO-PROX reaction). The way that the Au precursor, the TiO2 support and the sodium citrate is added to the ethylene glycol/water solution strongly influences the Au nanoparticle sizes and the catalytic activity of the obtained materials.
DOI: 10.6084/m9.figshare.5719249
title: Hawthorn (Crataegus Oxyacantha) Extract in the Drinking Water of Broilers on Growth and Incidence of Pulmonary Hypertension Syndrome (PHS)

description: ABSTRACT Hawthorn extract has been used for ameliorating cardiac disorders and pulmonary hypertension. Flavonoids and oligomeric proanthocyanidins are considered to be responsible for the positive health effects of hawthorn extract. The effect of Hawthorn extract in the water supply on feed intake, growth, carcass traits, internal organ weight, cardiac indices, the concentration of serum proteins and the incidence of pulmonary hypertension syndrome was evaluated in broiler chickens. At one day-of-age, 225 chickens were assigned to one of three experimental groups where 0, 0.1 and 0.2 ML of hawthorn extract was added per one liter of drinking water. Feed intake, live weight gain and carcass weight increased when hawthorn extract was included in the drinking water at a level of 0.1 and 0.2 ML/L (p&lt;0.05). Compared to no extract, the addition of Hawthorn extract in the drinking water (p&lt;0.05) reduced the proportion of the body attributed to abdominal fat, liver and heart (p&lt;0.05), and decreased the percentage of birds that died or showed clinical symptoms of pulmonary hypertension syndrome (p&lt;0.05). Serum protein concentration was (p&lt;0.05) higher in chickens that received the hawthorn extract in the drinking water compared to no addition of extract in the drinking water. Hawthorn extract has shown potential for use as a herbal medicine to aid in the prevention of physiological cardiac disorders and pulmonary hypertension in chickens.
DOI: 10.6084/m9.figshare.5719249.v1
title: Hawthorn (Crataegus Oxyacantha) Extract in the Drinking Water of Broilers on Growth and Incidence of Pulmonary Hypertension Syndrome (PHS)

description: ABSTRACT Hawthorn extract has been used for ameliorating cardiac disorders and pulmonary hypertension. Flavonoids and oligomeric proanthocyanidins are considered to be responsible for the positive health effects of hawthorn extract. The effect of Hawthorn extract in the water supply on feed intake, growth, carcass traits, internal organ weight, cardiac indices, the concentration of serum proteins and the incidence of pulmonary hypertension syndrome was evaluated in broiler chickens. At one day-of-age, 225 chickens were assigned to one of three experimental groups where 0, 0.1 and 0.2 ML of hawthorn extract was added per one liter of drinking water. Feed intake, live weight gain and carcass weight increased when hawthorn extract was included in the drinking water at a level of 0.1 and 0.2 ML/L (p&lt;0.05). Compared to no extract, the addition of Hawthorn extract in the drinking water (p&lt;0.05) reduced the proportion of the body attributed to abdominal fat, liver and heart (p&lt;0.05), and decreased the percentage of birds that died or showed clinical symptoms of pulmonary hypertension syndrome (p&lt;0.05). Serum protein concentration was (p&lt;0.05) higher in chickens that received the hawthorn extract in the drinking water compared to no addition of extract in the drinking water. Hawthorn extract has shown potential for use as a herbal medicine to aid in the prevention of physiological cardiac disorders and pulmonary hypertension in chickens.
DOI: 10.6084/m9.figshare.5719246
title: Microwave-assisted extraction in dry fruit of andean species Vaccinium meridionale: Experimental conditions on the recovery of total polyphenols

description: ABSTRACT Due to their nutraceutical properties, the fruits of the species Vaccinium meridionale, which inhabit the Andean region, are of scientific interest. Microwave-assisted extraction has been applied to different vegetal matrices for to extract efficiently polyphenolic compounds. In this work we study in microwave assisted extraction processes, the effect on the extraction of total polyphenols in dried fruits of Vaccinium meridionale, using response surface methodology. The main objective of this research was to analyze the relationships between power, temperature, solid-liquid ratio, time and ethanol concentration in aqueous media on the effectiveness of total polyphenols recovery in dry fruits of Vaccinium meridionale. A central composite design face-centered with three levels for each variable was used: P = 300 - 900 W; T = 70 -110 °C; L:Srat. = 30:1 - 70:1 w/w; t = 5 - 15 min; [EtOH] = 0 - 80%. In this sense, the effect of the input variables on the recovery of total polyphenols, the optimization process for maximum extraction, and the comparison to other solid-liquid extractions in terms of quantity of total polyphenols, are reported. It was found that the significant variables in the extraction process were ethanol concentration, temperature and time; the best yields were obtained in the range [EtOH] = 44 - 49%, T = 110 °C, and t = 10 - 15 min. In terms of quantity, time and consumption of energy, microwave-assisted extraction technique is more efficient than other solid-liquid extraction processes for the extraction of total polyphenols.
DOI: 10.6084/m9.figshare.5719246.v1
title: Microwave-assisted extraction in dry fruit of andean species Vaccinium meridionale: Experimental conditions on the recovery of total polyphenols

description: ABSTRACT Due to their nutraceutical properties, the fruits of the species Vaccinium meridionale, which inhabit the Andean region, are of scientific interest. Microwave-assisted extraction has been applied to different vegetal matrices for to extract efficiently polyphenolic compounds. In this work we study in microwave assisted extraction processes, the effect on the extraction of total polyphenols in dried fruits of Vaccinium meridionale, using response surface methodology. The main objective of this research was to analyze the relationships between power, temperature, solid-liquid ratio, time and ethanol concentration in aqueous media on the effectiveness of total polyphenols recovery in dry fruits of Vaccinium meridionale. A central composite design face-centered with three levels for each variable was used: P = 300 - 900 W; T = 70 -110 °C; L:Srat. = 30:1 - 70:1 w/w; t = 5 - 15 min; [EtOH] = 0 - 80%. In this sense, the effect of the input variables on the recovery of total polyphenols, the optimization process for maximum extraction, and the comparison to other solid-liquid extractions in terms of quantity of total polyphenols, are reported. It was found that the significant variables in the extraction process were ethanol concentration, temperature and time; the best yields were obtained in the range [EtOH] = 44 - 49%, T = 110 °C, and t = 10 - 15 min. In terms of quantity, time and consumption of energy, microwave-assisted extraction technique is more efficient than other solid-liquid extraction processes for the extraction of total polyphenols.
DOI: 10.6084/m9.figshare.5719243
title: Three-Dimensional Finite Element Analysis of Varying Diameter and Connection Type in Implants with High Crown-Implant Ratio

description: Abstract The aim of this study was to evaluate the effect of varying the diameter, connection type and loading on stress distribution in the cortical bone for implants with a high crown-implant ratio. Six 3D models were simulated with the InVesalius, Rhinoceros 3D 4.0 and SolidWorks 2011 software programs. Models were composed of bone from the posterior mandibular region; they included an implant of 8.5 mm length, diameter Ø 3.75 mm or Ø 5.00 mm and connection types such as external hexagon (EH), internal hexagon (IH) and Morse taper (MT). Models were processed using the Femap 11.2 and NeiNastran 11.0 programs and by using an axial force of 200 N and oblique force of 100 N. Results were recorded in terms of the maximum principal stress. Oblique loading showed high stress in the cortical bone compared to that shown by axial loading. The results showed that implants with a wide diameter showed more favorable stress distribution in the cortical bone region than regular diameter, regardless of the connection type. Morse taper implants showed better stress distribution compared to other connection types, especially in the oblique loading. Thus, oblique loading showed higher stress concentration in cortical bone tissue when compared with axial loading. Wide diameter implant was favorable for improved stress distribution in the cortical bone region, while Morse taper implants showed lower stress concentration than other connections.
DOI: 10.6084/m9.figshare.5719243.v1
title: Three-Dimensional Finite Element Analysis of Varying Diameter and Connection Type in Implants with High Crown-Implant Ratio

description: Abstract The aim of this study was to evaluate the effect of varying the diameter, connection type and loading on stress distribution in the cortical bone for implants with a high crown-implant ratio. Six 3D models were simulated with the InVesalius, Rhinoceros 3D 4.0 and SolidWorks 2011 software programs. Models were composed of bone from the posterior mandibular region; they included an implant of 8.5 mm length, diameter Ø 3.75 mm or Ø 5.00 mm and connection types such as external hexagon (EH), internal hexagon (IH) and Morse taper (MT). Models were processed using the Femap 11.2 and NeiNastran 11.0 programs and by using an axial force of 200 N and oblique force of 100 N. Results were recorded in terms of the maximum principal stress. Oblique loading showed high stress in the cortical bone compared to that shown by axial loading. The results showed that implants with a wide diameter showed more favorable stress distribution in the cortical bone region than regular diameter, regardless of the connection type. Morse taper implants showed better stress distribution compared to other connection types, especially in the oblique loading. Thus, oblique loading showed higher stress concentration in cortical bone tissue when compared with axial loading. Wide diameter implant was favorable for improved stress distribution in the cortical bone region, while Morse taper implants showed lower stress concentration than other connections.
DOI: 10.6084/m9.figshare.5719240
title: Sensitivity Analysis of a Single-Moment Microphysics Scheme to Changes in its Configuration

description: Abstract In order to determine the sensitivity of the rain generated by the microphysics scheme to changes in its configuration and select the changes with the greatest potential in reducing precipitation, this research was conducted. The Kinematic Driver model, a platform to isolate the microphysics of the complex interactions that take place in weather and climate models, was used to simulate hypothetical situations in the atmosphere. The influence of varying the rates of microphysics processes, as well as the effect produced by different methods to estimate the autoconversion and the intercept of rain size distribution, was analyzed. Variations in the cloud droplet concentration and in the cloud ice-snow ratio were also tested. The cloud water collection by raindrops was the most influential process in the generation of precipitation, it allowed to remarkably decrease the rain generated by both warm and mixed-phase clouds. In addition, some changes in methods to estimate the autoconversion rate and the intercept of the rain size distribution, as well as in the concentration of cloud droplets have shown potential in reducing the rain.
DOI: 10.6084/m9.figshare.5719240.v1
title: Sensitivity Analysis of a Single-Moment Microphysics Scheme to Changes in its Configuration

description: Abstract In order to determine the sensitivity of the rain generated by the microphysics scheme to changes in its configuration and select the changes with the greatest potential in reducing precipitation, this research was conducted. The Kinematic Driver model, a platform to isolate the microphysics of the complex interactions that take place in weather and climate models, was used to simulate hypothetical situations in the atmosphere. The influence of varying the rates of microphysics processes, as well as the effect produced by different methods to estimate the autoconversion and the intercept of rain size distribution, was analyzed. Variations in the cloud droplet concentration and in the cloud ice-snow ratio were also tested. The cloud water collection by raindrops was the most influential process in the generation of precipitation, it allowed to remarkably decrease the rain generated by both warm and mixed-phase clouds. In addition, some changes in methods to estimate the autoconversion rate and the intercept of the rain size distribution, as well as in the concentration of cloud droplets have shown potential in reducing the rain.
DOI: 10.6084/m9.figshare.5719237
title: Proton Exchange Membrane Based on Sulfonated Poly (Aromatic Imide-Co-Aliphatic Imide) for Direct Methanol Fuel Cell

description: A new sulfonated poly(aromatic imide-co-aliphatic imide) (SPI) for the use as a polymer electrolyte membrane was successfully synthesized from 4,4'-diaminodiphenylmethane (DDM), 4,4'-diaminodiphenylmethane-2,2'-disulfonic acid disodium salt (S-DDM), hexamethylenediamine, and 3,3',4,4'-benzophenonetetracarboxylic dianhydride in a one-step reaction. S-DDM was prepared by the direct sulfonation of DDM monomer. The degree of sulfonation of the sulfonated copolyimide was varied by using various molar concentrations of S-DDM. The sulfonated copolyimide with the highest degree of sulfonation possessed the proton conductivity of 0.0032 S.cm-1 in a wet state. The highest methanol permeability of the sulfonated copolyimide was 2.75 × 10-8 cm2.s-1 which is ~425 times lower than that of the Nafion 117. The highest membrane selectivity belonged to the membrane with 34% degree of sulfonation with the value of 1.65 × 106 s.S.cm-3 which is three orders of magnitude higher than the commercial Nafion 117.
DOI: 10.6084/m9.figshare.5719237.v1
title: Proton Exchange Membrane Based on Sulfonated Poly (Aromatic Imide-Co-Aliphatic Imide) for Direct Methanol Fuel Cell

description: A new sulfonated poly(aromatic imide-co-aliphatic imide) (SPI) for the use as a polymer electrolyte membrane was successfully synthesized from 4,4'-diaminodiphenylmethane (DDM), 4,4'-diaminodiphenylmethane-2,2'-disulfonic acid disodium salt (S-DDM), hexamethylenediamine, and 3,3',4,4'-benzophenonetetracarboxylic dianhydride in a one-step reaction. S-DDM was prepared by the direct sulfonation of DDM monomer. The degree of sulfonation of the sulfonated copolyimide was varied by using various molar concentrations of S-DDM. The sulfonated copolyimide with the highest degree of sulfonation possessed the proton conductivity of 0.0032 S.cm-1 in a wet state. The highest methanol permeability of the sulfonated copolyimide was 2.75 × 10-8 cm2.s-1 which is ~425 times lower than that of the Nafion 117. The highest membrane selectivity belonged to the membrane with 34% degree of sulfonation with the value of 1.65 × 106 s.S.cm-3 which is three orders of magnitude higher than the commercial Nafion 117.
DOI: 10.6084/m9.figshare.5719234
title: Cement plates and pavers made with waste from the sorting process in Blumenau, SC, Brazil

description: Abstract This project analysed the physical-mechanical performance of plates and pavers with the incorporation of waste originated from the sorting process in the city of Blumenau, SC, Brazil. The waste consisted of organic waste, polymers, paper, glass and textile materials which were reduced in size (2.4 mm to 19.0 mm) and then used to replace natural aggregate at different ratios: 5%, 10%, 20% and 30%. The consistence of the fresh mortar and the physical-mechanical indices, the apparent specific gravity, water absorption and compressive strength of the hardened mortar were determined. Scanning electron microscopy analysis and flexural strength tests were also conducted. The bulk density of the plates and pavers ranged from 0.8 to 1.6 g.cm-3 and 1.78 to 1.84 g.cm-3 respectively. In the case of low incorporation of waste, both materials presented water absorption results that meet the requirements of correlated standards. The plates presented compressive strength values ranging from 4.7 MPa to 14.6 MPa. Flexural strength results reached values between 0.1 MPa and 1,8 MPa. The pavers achieved compressive strength values between 10.8 MPa and 18.7 MPa. Pavers with 5% incorporation of waste aggregates could be used in sidewalks and curbs, as long as future studies are able to demonstrate their durability.
DOI: 10.6084/m9.figshare.5719234.v1
title: Cement plates and pavers made with waste from the sorting process in Blumenau, SC, Brazil

description: Abstract This project analysed the physical-mechanical performance of plates and pavers with the incorporation of waste originated from the sorting process in the city of Blumenau, SC, Brazil. The waste consisted of organic waste, polymers, paper, glass and textile materials which were reduced in size (2.4 mm to 19.0 mm) and then used to replace natural aggregate at different ratios: 5%, 10%, 20% and 30%. The consistence of the fresh mortar and the physical-mechanical indices, the apparent specific gravity, water absorption and compressive strength of the hardened mortar were determined. Scanning electron microscopy analysis and flexural strength tests were also conducted. The bulk density of the plates and pavers ranged from 0.8 to 1.6 g.cm-3 and 1.78 to 1.84 g.cm-3 respectively. In the case of low incorporation of waste, both materials presented water absorption results that meet the requirements of correlated standards. The plates presented compressive strength values ranging from 4.7 MPa to 14.6 MPa. Flexural strength results reached values between 0.1 MPa and 1,8 MPa. The pavers achieved compressive strength values between 10.8 MPa and 18.7 MPa. Pavers with 5% incorporation of waste aggregates could be used in sidewalks and curbs, as long as future studies are able to demonstrate their durability.