cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6858137.v1
title: Evolución microestructural in-situ a alta temperatura de depósitos de soldadura de aceros 9Cr con diferentes contenidos de boro

description: ABSTRACT New alloys have been developed for enhancing the performance of the equipment used in thermoelectric power generation industry. With the objective of increasing the creep resistance of these materials, changes in the content of some microalloying elements were carried out. Boron bearing in creep strength enhanced 9Cr steel (CSE9Cr) welds improved martensite stabilization through precipitates. Mechanical properties are achieved after post weld heat treatments (PWHT). In this work, microstructural evolution of samples subjected to hot tensile test (HTT) was studied by means of in-situ X-Ray Diffraction (XRD) to determine the effect of boron in CSE9Cr welds on their mechanical properties at elevated temperatures. All weld metal coupons were welded using two experimental flux-cored wires with two levels of boron (20 and 60 ppm). A single post weld heat treatment was applied to each composition. HTT at different temperatures and initial strain rate were performed while the microstructure evolution was monitoring by in-situ XRD. Mechanical properties and XRD microstructural parameters were correlated. HTT results were extrapolated using correlation theory HTT-Creep and Larson-Miller parameterization. It was found that the higher boron in the weld metal decreased the rate of strength loss at elevated temperatures.
DOI: 10.6084/m9.figshare.6858131
title: Tratamiento térmico alternativo para el metal de soldadura de un acero 9Cr

description: RESUMEN Los aceros 9Cr con resistencia al creep mejorada (CSE9Cr) son ampliamente utilizados en la industria de generación termoeléctrica, en los que la soldabilidad es un factor crítico, debido a que se los emplea en la fabricación de equipos de construcción soldada. Para mejorar la resistencia al creep se busca obtener microestructuras que contengan alta densidad de dislocaciones y finos precipitados que refuercen la matriz martensítica a alta temperatura. Estas microestructuras pueden ser alcanzadas luego de aplicar un tratamiento térmico de post soldadura (PWHT), por cuanto su optimización es importante. En este trabajo se estudió la aplicación de un PWHT alternativo a los industrialmente utilizados sobre depósitos de soldadura de aceros CSE9Cr. Se soldaron cupones de metal de aporte puro (MAP) con alambres tubulares flux-cored experimentales. Los PWHT evaluados fueron: 1) convencional: revenido a 760°C durante 2 horas, 2) alternativo: solubilizado a 1100°C durante 1hora + primer revenido a 660°C durante 3 horas + segundo revenido a 660°C durante 3 horas. Sobres muestras tratadas, se llevaron a cabo ensayos de tracción en caliente (HTT) a diferentes velocidades de deformación inicial y temperaturas, analizando las microestructuras de partida por microscopía SEM y EBSD. Se extrapolaron los resultados de HTT aplicando la teoría de correlación HTT-Creep y de parametrización Larson-Miller. Se encontró que un PWHT de solubilizado más un doble revenido mejoró las propiedades a elevada temperatura. Esto estaría asociado a la obtención de una microestructura con una mayor densidad de dislocaciones y precipitados finos que limitaron el movimiento de las dislocaciones en el tiempo.
DOI: 10.6084/m9.figshare.6858134
title: The Effect on Performance Time and Quality of the Knots after Mono or Bimanual Training of Laparoscopic Intracorporeal Knot Tying according to the Gladiator Rule Technique

description: Abstract Objective To assesswhether themonomanual or bimanual training of laparoscopic suture followingthe sametechniquemay interferewith theknots’ performancetimeand/or quality. Methods A prospective observational study involving 41 resident students of gynecology/ obstetrics and general surgery who attended a laparoscopic suture training for 2 days. The participants were divided into two groups. Group A performed the training using exclusively their dominant hand, and group B performed the training using both hands to tie the intracorporeal knot. All participants followed the same technique, called Romeo Gladiator Rule. At the end of the course, the participants were asked to perform three exercises to assess the time it took them to tie the knots, as well as the quality of the knots. Results A comparative analysis of the groups showed that there was no statistically significant difference (p = 0.334) between them regarding the length of time to tie one knot. However, when the time to tie 10 consecutive knots was compared, group A was faster than group B (p = 0.020). A comparison of the knot loosening average, in millimeters, revealed that the knots made by group B loosened less than those made by group A, but there was no statistically significant difference regarding the number of knots that became untied. Conclusion This study demonstrated that the knots from group B showed better quality than those from group A, with lower loosening measures and more strength necessary to untie the knots. The study also demonstrated that group A was faster than B when the time to tie ten consecutive knots was compared.
DOI: 10.6084/m9.figshare.6858131.v1
title: Tratamiento térmico alternativo para el metal de soldadura de un acero 9Cr

description: RESUMEN Los aceros 9Cr con resistencia al creep mejorada (CSE9Cr) son ampliamente utilizados en la industria de generación termoeléctrica, en los que la soldabilidad es un factor crítico, debido a que se los emplea en la fabricación de equipos de construcción soldada. Para mejorar la resistencia al creep se busca obtener microestructuras que contengan alta densidad de dislocaciones y finos precipitados que refuercen la matriz martensítica a alta temperatura. Estas microestructuras pueden ser alcanzadas luego de aplicar un tratamiento térmico de post soldadura (PWHT), por cuanto su optimización es importante. En este trabajo se estudió la aplicación de un PWHT alternativo a los industrialmente utilizados sobre depósitos de soldadura de aceros CSE9Cr. Se soldaron cupones de metal de aporte puro (MAP) con alambres tubulares flux-cored experimentales. Los PWHT evaluados fueron: 1) convencional: revenido a 760°C durante 2 horas, 2) alternativo: solubilizado a 1100°C durante 1hora + primer revenido a 660°C durante 3 horas + segundo revenido a 660°C durante 3 horas. Sobres muestras tratadas, se llevaron a cabo ensayos de tracción en caliente (HTT) a diferentes velocidades de deformación inicial y temperaturas, analizando las microestructuras de partida por microscopía SEM y EBSD. Se extrapolaron los resultados de HTT aplicando la teoría de correlación HTT-Creep y de parametrización Larson-Miller. Se encontró que un PWHT de solubilizado más un doble revenido mejoró las propiedades a elevada temperatura. Esto estaría asociado a la obtención de una microestructura con una mayor densidad de dislocaciones y precipitados finos que limitaron el movimiento de las dislocaciones en el tiempo.
DOI: 10.6084/m9.figshare.6858134.v1
title: The Effect on Performance Time and Quality of the Knots after Mono or Bimanual Training of Laparoscopic Intracorporeal Knot Tying according to the Gladiator Rule Technique

description: Abstract Objective To assesswhether themonomanual or bimanual training of laparoscopic suture followingthe sametechniquemay interferewith theknots’ performancetimeand/or quality. Methods A prospective observational study involving 41 resident students of gynecology/ obstetrics and general surgery who attended a laparoscopic suture training for 2 days. The participants were divided into two groups. Group A performed the training using exclusively their dominant hand, and group B performed the training using both hands to tie the intracorporeal knot. All participants followed the same technique, called Romeo Gladiator Rule. At the end of the course, the participants were asked to perform three exercises to assess the time it took them to tie the knots, as well as the quality of the knots. Results A comparative analysis of the groups showed that there was no statistically significant difference (p = 0.334) between them regarding the length of time to tie one knot. However, when the time to tie 10 consecutive knots was compared, group A was faster than group B (p = 0.020). A comparison of the knot loosening average, in millimeters, revealed that the knots made by group B loosened less than those made by group A, but there was no statistically significant difference regarding the number of knots that became untied. Conclusion This study demonstrated that the knots from group B showed better quality than those from group A, with lower loosening measures and more strength necessary to untie the knots. The study also demonstrated that group A was faster than B when the time to tie ten consecutive knots was compared.
DOI: 10.6084/m9.figshare.6858122
title: Study of the microstructure of a weld bead P91 steel by transmission electron microscopy

description: ABSTRACT In the present work the microstructural characterization of a single-pass weld of 9Cr1MoVNb P91 steel performed by the flux-cored arc welding (FCAW) process in the “as welding” condition has been carried out by means of transmission electron microscopy. P91 steel offers a good weldability, but the mechanical properties of the welded joints are found to be inferior compared to the base metal. The heat affected zone (HAZ) of these types of steels is ~ 4 mm making it difficult to extract carbon replicas and thin foil to study the microstructure generated in each sub-zone of the ZAC: coarse grained ZAC (CGZAC), fine grained ZAC (FGZAC) and intercritical ZAC (ICZAC). Nev-ertheless, it was possible to extract replicas from each region to identify precipitates and using a focused ion beam (FIB-SEM), thin films could be extracted from a specific area to characterize the matrix microstructure. The precipitates present in each subzone of the ZAC were characterized as well as how the dissolution of M23C6 affects the matrix. At low peak temperatures and low heating / cooling rates such as those characterizing the fine grain zones (ICHAZ and FGHAZ) the M23C6 carbides were found to be partially dissolved and in contact with retained austenite. On the other hand, in the areas with the highest peak temperatures and high heating/cooling rates (CGHAZ and fusion zone) thin films of retained austenite were found on the austenitic grain boundaries and on the martensítica lath. On the other hand, in the areas with the highest peak temperatures and high heating / cooling rates (ZACGG and ZF) thin films of retained austenite on the austenitic grain edges and the martensite laths were found.
DOI: 10.6084/m9.figshare.6858122.v1
title: Study of the microstructure of a weld bead P91 steel by transmission electron microscopy

description: ABSTRACT In the present work the microstructural characterization of a single-pass weld of 9Cr1MoVNb P91 steel performed by the flux-cored arc welding (FCAW) process in the “as welding” condition has been carried out by means of transmission electron microscopy. P91 steel offers a good weldability, but the mechanical properties of the welded joints are found to be inferior compared to the base metal. The heat affected zone (HAZ) of these types of steels is ~ 4 mm making it difficult to extract carbon replicas and thin foil to study the microstructure generated in each sub-zone of the ZAC: coarse grained ZAC (CGZAC), fine grained ZAC (FGZAC) and intercritical ZAC (ICZAC). Nev-ertheless, it was possible to extract replicas from each region to identify precipitates and using a focused ion beam (FIB-SEM), thin films could be extracted from a specific area to characterize the matrix microstructure. The precipitates present in each subzone of the ZAC were characterized as well as how the dissolution of M23C6 affects the matrix. At low peak temperatures and low heating / cooling rates such as those characterizing the fine grain zones (ICHAZ and FGHAZ) the M23C6 carbides were found to be partially dissolved and in contact with retained austenite. On the other hand, in the areas with the highest peak temperatures and high heating/cooling rates (CGHAZ and fusion zone) thin films of retained austenite were found on the austenitic grain boundaries and on the martensítica lath. On the other hand, in the areas with the highest peak temperatures and high heating / cooling rates (ZACGG and ZF) thin films of retained austenite on the austenitic grain edges and the martensite laths were found.
DOI: 10.6084/m9.figshare.6858116
title: Physical-mechanical properties of multinutrient blocks with different binders for goats and sheep intake

description: ABSTRACT Feed supplementation with multinutrient blocks (MB) for sheep and goats can be a viable alternative in the Brazilian semiarid region, and it is necessary to set an ideal hardness to obtain maximum feed efficiency. Therefore, this study aimed to evaluate the manufacture of MB using five binders: Portland cement, lime, kaolin, Portland cement + kaolin and lime + bentonite, at two percentages (7.5 and 10%) and two healing times (72 and 96 h). The experimental design was completely randomized in a 5 x 2 x 2 factorial scheme (binders, percentages and healing times, respectively), with five repetitions. Using lime in the MBs led to greater resistance in the specimens (208.53 kPa), as well as the greater percentage of binders (10%), ensuring higher hardness in the blocks. No change was observed in block hardness with the healing time, and a cure of 72 h is recommended. There was greater water absorption with the use of Portland cement and the use of kaolin and of lime + bentonite led to the lowest values of water absorption. The use of lime at 10% as binder and the 72 h healing time were shown to be the best combination in the manufacture of multinutrient blocks.
DOI: 10.6084/m9.figshare.6858119
title: Performance of tambaqui submitted feed deprivation and refeeding in cages

description: ABSTRACT The aim of this research was to evaluate the performance of tambaqui juveniles (Colossoma macropomum) submitted to feed deprivation and refeeding in cages. For 60 days of experimentation, 100 tambaquis were used (initial weight 8.0 ± 0.5g), distributed in 20 cages. The treatments were: T1=daily fed animals (control), T2=fed for six days and one day of restriction (6F/1R), T3=fed for five days and two days of restriction (5F/2R) and T4=fed for four days with three days of restriction (4F/3R). With five replicates each, and five fish for each experimental unit, arranged in a completely randomized design. In accordance with treatments, the fishes were fed twice a day at 08:00am and 4:00pm. The data collection for the performance evaluation was based on final weight, weight gain, average feed intake, alimentary conversion, total length, standard length, height, index head, index profile, protein efficiency rate, specific growth rate and survival at the end of the experimental period. Results were submitted to ANOVA and Tukey test (P≥5). Treatment 5F/2R resulted in the best performance results, which is a tool in reducing production costs without loss in performance of tambaqui juvenile.
DOI: 10.6084/m9.figshare.6858119.v1
title: Performance of tambaqui submitted feed deprivation and refeeding in cages

description: ABSTRACT The aim of this research was to evaluate the performance of tambaqui juveniles (Colossoma macropomum) submitted to feed deprivation and refeeding in cages. For 60 days of experimentation, 100 tambaquis were used (initial weight 8.0 ± 0.5g), distributed in 20 cages. The treatments were: T1=daily fed animals (control), T2=fed for six days and one day of restriction (6F/1R), T3=fed for five days and two days of restriction (5F/2R) and T4=fed for four days with three days of restriction (4F/3R). With five replicates each, and five fish for each experimental unit, arranged in a completely randomized design. In accordance with treatments, the fishes were fed twice a day at 08:00am and 4:00pm. The data collection for the performance evaluation was based on final weight, weight gain, average feed intake, alimentary conversion, total length, standard length, height, index head, index profile, protein efficiency rate, specific growth rate and survival at the end of the experimental period. Results were submitted to ANOVA and Tukey test (P≥5). Treatment 5F/2R resulted in the best performance results, which is a tool in reducing production costs without loss in performance of tambaqui juvenile.
DOI: 10.6084/m9.figshare.6858113
title: Functioning in Women with Cervical Cancer in Brazil: the Perspective of Experts

description: Abstract Objective The objective of this study was to identify the perspective of the specialists about functioning in women with cervical cancer (CC). Methods A study was conducted with specialists using the Delphi methodology. The specialist contacts were found in oncology organizations and associations, as well as in a referral hospital in the treatment of CC. The questions that the experts answered covered the biopsychosocial domains of the International Classification of Functioning, Disability and Health (ICF). Results Twenty-five specialists participated in the study. The experts’ responses generated 485 significant concepts. The categories that presented the highest frequencies of reporting by the specialists were health services, systems and policies; structure of the reproductive system; health professionals and sexual function. Conclusion Regarding the perception of the specialists, this study concluded that 24 categories of ICF are the most relevant in the context of functioning in women with CC. The results suggest that the biopsychosocial perspective was incorporated in the experts’ perceptions about the functioning phenomenon in women with CC in Brazil.
DOI: 10.6084/m9.figshare.6858116.v1
title: Physical-mechanical properties of multinutrient blocks with different binders for goats and sheep intake

description: ABSTRACT Feed supplementation with multinutrient blocks (MB) for sheep and goats can be a viable alternative in the Brazilian semiarid region, and it is necessary to set an ideal hardness to obtain maximum feed efficiency. Therefore, this study aimed to evaluate the manufacture of MB using five binders: Portland cement, lime, kaolin, Portland cement + kaolin and lime + bentonite, at two percentages (7.5 and 10%) and two healing times (72 and 96 h). The experimental design was completely randomized in a 5 x 2 x 2 factorial scheme (binders, percentages and healing times, respectively), with five repetitions. Using lime in the MBs led to greater resistance in the specimens (208.53 kPa), as well as the greater percentage of binders (10%), ensuring higher hardness in the blocks. No change was observed in block hardness with the healing time, and a cure of 72 h is recommended. There was greater water absorption with the use of Portland cement and the use of kaolin and of lime + bentonite led to the lowest values of water absorption. The use of lime at 10% as binder and the 72 h healing time were shown to be the best combination in the manufacture of multinutrient blocks.
DOI: 10.6084/m9.figshare.6858113.v1
title: Functioning in Women with Cervical Cancer in Brazil: the Perspective of Experts

description: Abstract Objective The objective of this study was to identify the perspective of the specialists about functioning in women with cervical cancer (CC). Methods A study was conducted with specialists using the Delphi methodology. The specialist contacts were found in oncology organizations and associations, as well as in a referral hospital in the treatment of CC. The questions that the experts answered covered the biopsychosocial domains of the International Classification of Functioning, Disability and Health (ICF). Results Twenty-five specialists participated in the study. The experts’ responses generated 485 significant concepts. The categories that presented the highest frequencies of reporting by the specialists were health services, systems and policies; structure of the reproductive system; health professionals and sexual function. Conclusion Regarding the perception of the specialists, this study concluded that 24 categories of ICF are the most relevant in the context of functioning in women with CC. The results suggest that the biopsychosocial perspective was incorporated in the experts’ perceptions about the functioning phenomenon in women with CC in Brazil.
DOI: 10.6084/m9.figshare.6858107
title: Atmospheric Conditions That Favor Pollutant Concentrations in the South of Brazil

description: Abstract Significant concentrations of Total Suspended Particulate found in Rio Grande, in some years in the 90’s, were identified and their associated atmospheric conditions were applied to create a classification of situations that favor high pollutants’ concentrations. A hundred ten cases with concentrations above 30 μg.m-3 were detected and 53 out of those had concentrations above 75 μg.m-3. Events were grouped into 8 categories according to the similarity of the wind flow and the surface pressure field, based on the atmospheric fields obtained from Reanalysis data. Most cases take place when there is a high-pressure system south of, north of or over the region since it triggers moderate winds which do not enable pollutant dispersion. Data on weekly mean sea surface temperatures were also analyzed. When there is high pressure, there is a flow of cold waters coming from the south whereas, in low-pressure case, there is a flow of hot waters coming from the north. A satisfactory classification of atmospheric conditions that favor pollutant concentration in the city was carried out. An interaction between the ocean and the atmosphere was identified. This classification, along with the numerical weather forecast, may be used to warn population about the possibility of high pollutant concentrations.
DOI: 10.6084/m9.figshare.6858107.v1
title: Atmospheric Conditions That Favor Pollutant Concentrations in the South of Brazil

description: Abstract Significant concentrations of Total Suspended Particulate found in Rio Grande, in some years in the 90’s, were identified and their associated atmospheric conditions were applied to create a classification of situations that favor high pollutants’ concentrations. A hundred ten cases with concentrations above 30 μg.m-3 were detected and 53 out of those had concentrations above 75 μg.m-3. Events were grouped into 8 categories according to the similarity of the wind flow and the surface pressure field, based on the atmospheric fields obtained from Reanalysis data. Most cases take place when there is a high-pressure system south of, north of or over the region since it triggers moderate winds which do not enable pollutant dispersion. Data on weekly mean sea surface temperatures were also analyzed. When there is high pressure, there is a flow of cold waters coming from the south whereas, in low-pressure case, there is a flow of hot waters coming from the north. A satisfactory classification of atmospheric conditions that favor pollutant concentration in the city was carried out. An interaction between the ocean and the atmosphere was identified. This classification, along with the numerical weather forecast, may be used to warn population about the possibility of high pollutant concentrations.