cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.8227121.v1
title: Extreme Rainfall Events in Northeast Brazil and Atmospheric Characteristics

description: Abstract This study investigated the means characteristics atmospherics associated with extreme precipitation events with until three-day delay before the occurrence of such extremes. The extreme events were chose when in most grid points on the Northeast of Brazil (2° S-12° S and 45° W-37° W), daily rainfall was equal or more than 50 mm. Daily data precipitation were of a set of rainfall stations distributed over NEB, from the observational networks of the National Institute of Meteorology, National Water Agency and Meteorology and Water Resources Regional's Centers, covering the period 1974-2003. These data were interpolated spatially using the technique of Inverse Square of the distance to a regular grid with a resolution of 1° in latitude and longitude (about 111 km). For analyzes of atmospheric features were used in atmospheric variables reanalysis data as southern zonal wind, air temperature, relative humidity and other reanalysis of NCEP-NOAA from the surface until 200 mb. The most significant results showed that three days before of the precipitation events considered extreme, there is a cold air incursion into the central area of the NEB, intensifying a day before of the events days, with lower anomalies below −4 °C, which do not appear to events considered of low rainfall over the region.
DOI: 10.6084/m9.figshare.8227115
title: Performance and Surface Integrity of Wire Electrical Discharge Machining of Thin Ti6al4v Plate Using Coated and Uncoated Wires

description: Wire Electrical Discharge Machining (WEDM) is one of the most important production technologies to manufacture very accurate small components and tools on any electrical conductive material. Titanium and its alloys have been widely used in automobile and aerospace industry as well as in medical engineering field. Small components and tools with complex geometrical shapes are difficult to be produced on titanium alloys by both conventional and nonconventional machining technologies. In this work an experimental investigation on the influences of wire electrode type and electrical variables when WEDM a thin plate of Ti6Al4V alloy has been carried out. Uncoated brass wire and copper wire with a diffused zinc coating were used for the experiments. Interval time, wire run-off speed, discharge duration and dielectric inlet pressure were evaluated in order to achieve adequate process parameter settings. Characteristics of surface integrity were also investigated. The best technological results for all tested WEDM parameters were attained for copper wire with a diffused zinc coating. The recast layer of the samples WEDMachined with the copper wire presented a smaller thickness and more compact than that obtained with uncoated brass wire. For WEDM with both types of wire, the existence of thermal cracks was observed.
DOI: 10.6084/m9.figshare.8227106
title: Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil

description: Abstract Knowledge of solar radiation is required for many applications. However, this atmospheric variable is not measured with an adequate space resolution. In this sense, to sites where solar radiation data are not directly measure, estimative using Ångström-Prescott equation can be used in order to provide solar radiation data, with input of sunshine duration. Thus, the objective of present study was to calibrate the Ångström-Prescott equation for different sites in Rio Grande do Norte state, Brazil. The performance of the calibrated Ångström-Prescott equation was evaluated by comparing of daily global solar radiation observed in situ. The MBE (Mean Bias Error) was lower than 1.50 MJ m-2 day-1, the Pearson's correlation coefficient about 0.90 and Willmott's index of agreement higher than 0.90, which are considered satisfactory.
DOI: 10.6084/m9.figshare.8227112.v1
title: Evaluation of Potential Residual Silica as Antireflective Layer for Selective Solar Surface of Black Chromium

description: Selective surfaces have the function of absorbing strongly the sunlight, while ideally losing little heat to the environment via convection and radiation. The present study sought to obtain a selective surface of black chromium coated with an antireflective (AR) layer based on sugarcane bagasse ash using copper as a substrate. From this selective surface the electrodeposition parameters (time, working distance, voltage) as well as the surface behavior were analyzed in order to determine if the AR layer provided an increase in the absorption levels of the film. By means of the present study it was possible to conclude that, in terms of the electrodeposition parameters evaluated, the anode-cathode distance of 5 cm stimulated the obtaining of higher levels of absorption. The addition of the antireflective layer on the black chromium films favored the increase of the absortance average in all the adopted parameter sets, besides reducing the standard deviation around the average. As for the microstructure of the obtained films, the increase of the parameter Ra promoted the increase of the absorption, due to the formation of optical traps.
DOI: 10.6084/m9.figshare.8227103
title: Microbiologically-Influenced Corrosion of 1020 Carbon Steel in Artificial Seawater Using Garlic Oil as Natural Biocide

description: This work aims evaluate the use of biocides in the microbiologically-influenced corrosion (MIC) of AISI 1020 carbon steel by sulfate-reducing bacteria (SRB) in artificial seawater. A natural biocide (garlic oil) and a commercial biocide (glutaraldehyde) were used to control the corrosion caused by these bacteria in artificial seawater. Microbial growth on the steel surface was evaluated by quantifying the sessile SRB using the most probable number (MPN) method. The action of biocides in the biocorrosion process was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The biofilm formation and the corrosion products on the steel surface were observed by scanning electron microscopy (SEM). The results showed that, although it was not able to inhibit the growth of sessile SRB completely, garlic oil showed a greater reduction in the corrosion process when compared to glutaraldehyde, indicating its possible application as a natural biocide under these conditions.
DOI: 10.6084/m9.figshare.8227106.v1
title: Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil

description: Abstract Knowledge of solar radiation is required for many applications. However, this atmospheric variable is not measured with an adequate space resolution. In this sense, to sites where solar radiation data are not directly measure, estimative using Ångström-Prescott equation can be used in order to provide solar radiation data, with input of sunshine duration. Thus, the objective of present study was to calibrate the Ångström-Prescott equation for different sites in Rio Grande do Norte state, Brazil. The performance of the calibrated Ångström-Prescott equation was evaluated by comparing of daily global solar radiation observed in situ. The MBE (Mean Bias Error) was lower than 1.50 MJ m-2 day-1, the Pearson's correlation coefficient about 0.90 and Willmott's index of agreement higher than 0.90, which are considered satisfactory.
DOI: 10.6084/m9.figshare.8227097
title: Effect of the Chemical Homogeneity of a Quenched and Tempered C-Mn Steel Pipe on the Mechanical Properties and Phase Transformations

description: Seamless steel pipes for application in the oil and gas industries are manufactured from quenched and tempered steel. Aiming to meet the required characteristics, it is necessary that the microstructure and the mechanical properties are homogeneous along the wall thickness of the pipes, which is even more critical for thick wall pipes. Considering the seamless steel pipe manufacturing process, any chemical segregation along the thickness could affect the phase transformation kinetics during heat treatments and, consequently, microstructure and mechanical properties. In this context, this pioneer work when evaluating the effect of the chemical homogeneity of a seamless pipe on the mechanical properties and phase transformations. The studied pipe was manufactured by a C-Mn steel designed for oil and gas industry applications. Two regions of the pipe wall were analyzed - a region close to the inner surface and another near the outer surface. The steel was subjected to quenching and tempering heat treatments. Scanning electron and optical microscopy techniques were used to characterize the resultant microstructures. Microhardness and Charpy impact tests were performed aiming to analyze the pipe mechanical behavior in the studied regions. In addition, dilatometric tests were performed in order to determine the continuous cooling transformation diagrams of these regions.
DOI: 10.6084/m9.figshare.8227100
title: Mobbing at work: from individual to collective confrontation

description: Abstract Objective: to report an experience of welcoming workers in a psychology school service and to present the results obtained through actions undertaken for the individual and collective confrontation of mobbing at work. Methods: report of intervention experienced in a psychology service. The intervention took place in two moments: 1) initial case individual therapeutic welcoming, 2) group welcoming. The individual care was provided in eight meetings. The group, consisting of seven workers, in nine care meetings. The analysis was carried out with the reading of medical records and diaries, as well as by meetings for discussion and convergence of the emerged contents. Results: two analysis devices were systematized: individual mobbing and group mobbing. The first one pointed out the worker’s re-elaborations due to the phenomenon. The second promoted the group strengthening while it shared and constructed collectively its means of confrontation. Conclusion: the authors reaffirm the importance of welcoming the mobbed workers and/or their witnesses as a starting point to deal with mobbing It must be followed by collective spaces to re-signify the psychosocial effects of mobbing on the workers and their work.
DOI: 10.6084/m9.figshare.8227103.v1
title: Microbiologically-Influenced Corrosion of 1020 Carbon Steel in Artificial Seawater Using Garlic Oil as Natural Biocide

description: This work aims evaluate the use of biocides in the microbiologically-influenced corrosion (MIC) of AISI 1020 carbon steel by sulfate-reducing bacteria (SRB) in artificial seawater. A natural biocide (garlic oil) and a commercial biocide (glutaraldehyde) were used to control the corrosion caused by these bacteria in artificial seawater. Microbial growth on the steel surface was evaluated by quantifying the sessile SRB using the most probable number (MPN) method. The action of biocides in the biocorrosion process was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The biofilm formation and the corrosion products on the steel surface were observed by scanning electron microscopy (SEM). The results showed that, although it was not able to inhibit the growth of sessile SRB completely, garlic oil showed a greater reduction in the corrosion process when compared to glutaraldehyde, indicating its possible application as a natural biocide under these conditions.
DOI: 10.6084/m9.figshare.8227091
title: Bank workers’ mental strain: building confrontation strategies

description: Abstract This report aims to present and discuss the basis, development and results of a support group constituted with sick bank workers. The activity was carried out by the Núcleo de Ação em Saúde do Trabalhador - NAST (Workers’ Health Action Center) in partnership with the Bank Workers’ Union of Limeira, state of São Paulo, Brazil. Starting from the workers’ professional life, the objective was to query the current labor organization in this sector. The group held eight meetings of approximately two hours each at the union headquarters in Limeira. During the meetings, workers reported adverse work situations that were determinant in their health-disease process. Most of the workers’ complaints were related to the mental strain caused by pressure to achieve oversized goals, and by the lack of recognition by the institution managers and users. The support group proved to be a powerful confrontation device and an important tool in providing a voice space for workers to articulate the construction of individual and collective strategies for health promotion in the workplace.
DOI: 10.6084/m9.figshare.8227094
title: EVALUATION OF SURGICAL TREATMENT OF ROTATOR CUFF ANTEROSUPERIOR TEARS ARTHROSCOPICALLY

description: ABSTRACT Objective: To evaluate the functional result of arthroscopic treatment in anterosuperior rotator cuff tears. Methods: Fifty-six patients submitted to arthroscopic repair of anterosuperior rotator cuff tears were evaluated. The follow-up time was five year and five months. All the tears were diagnosed by detailed physical and imaging examination. Statistical analysis was used to compare the preoperative and postoperative results of range of motion and the UCLA score, with Wilcoxon signed-rank test, 5% significance level (p≤0.05), the relationship between the subscapularis tear and postoperative results using the Mann-Whitney test, and between the pain length and the UCLA scale using Spearman's correlation. Results: A statistically significant improvement (p&lt;0.001) was found, comparing the range of motion and the UCLA preoperatively and postoperatively. 39% of the cases were classified as excellent, 33.9% as good, 23.7% as regular and 3.4% as bad results. A statistically significant relationship was found between the subscapularis tear type and the functional state, the pain length and the postoperative UCLA scale. Five complications, four reruptures and one adhesive capsulitis were found. Conclusions: The arthroscopic treatment for anterosuperior tears presented satisfactory results, with 8.5% of complications. Level of Evidence IV, Case series.
DOI: 10.6084/m9.figshare.8227097.v1
title: Effect of the Chemical Homogeneity of a Quenched and Tempered C-Mn Steel Pipe on the Mechanical Properties and Phase Transformations

description: Seamless steel pipes for application in the oil and gas industries are manufactured from quenched and tempered steel. Aiming to meet the required characteristics, it is necessary that the microstructure and the mechanical properties are homogeneous along the wall thickness of the pipes, which is even more critical for thick wall pipes. Considering the seamless steel pipe manufacturing process, any chemical segregation along the thickness could affect the phase transformation kinetics during heat treatments and, consequently, microstructure and mechanical properties. In this context, this pioneer work when evaluating the effect of the chemical homogeneity of a seamless pipe on the mechanical properties and phase transformations. The studied pipe was manufactured by a C-Mn steel designed for oil and gas industry applications. Two regions of the pipe wall were analyzed - a region close to the inner surface and another near the outer surface. The steel was subjected to quenching and tempering heat treatments. Scanning electron and optical microscopy techniques were used to characterize the resultant microstructures. Microhardness and Charpy impact tests were performed aiming to analyze the pipe mechanical behavior in the studied regions. In addition, dilatometric tests were performed in order to determine the continuous cooling transformation diagrams of these regions.
DOI: 10.6084/m9.figshare.8227100.v1
title: Mobbing at work: from individual to collective confrontation

description: Abstract Objective: to report an experience of welcoming workers in a psychology school service and to present the results obtained through actions undertaken for the individual and collective confrontation of mobbing at work. Methods: report of intervention experienced in a psychology service. The intervention took place in two moments: 1) initial case individual therapeutic welcoming, 2) group welcoming. The individual care was provided in eight meetings. The group, consisting of seven workers, in nine care meetings. The analysis was carried out with the reading of medical records and diaries, as well as by meetings for discussion and convergence of the emerged contents. Results: two analysis devices were systematized: individual mobbing and group mobbing. The first one pointed out the worker’s re-elaborations due to the phenomenon. The second promoted the group strengthening while it shared and constructed collectively its means of confrontation. Conclusion: the authors reaffirm the importance of welcoming the mobbed workers and/or their witnesses as a starting point to deal with mobbing It must be followed by collective spaces to re-signify the psychosocial effects of mobbing on the workers and their work.
DOI: 10.6084/m9.figshare.8227088
title: Statistical Analysis of Dry and Rainy Event of Maranhão Rainfall

description: Abstract The state of Maranhão is located in a transition zone between the northeastern semi-arid region, the hot and humid Amazon region and the central Brazilian plains. It presents well defined climatic conditions, with normally dry winter and predominant rains in autumn and summer. Considering the importance of detecting and specifying rainfall anomalies in the State, the present study used multivariate analysis techniques to find spatial and temporal patterns of SPI-6, and to quantify extreme dry and rainy events according to their frequency and period for the years of 1987 to 2015. The results showed that by the semester scale of SPI, the state is divided into five homogeneous regions, and that the mode of variability of SPI-6 explains well the rainfall regime, emphasizing that the state has two well-defined rainfall seasons. The results also showed that the highest incidences of drought events occurred in the south and the highest rains were recorded in the north of the state of Maranhão. Most cases of extreme dry/rainy events occurred in El Niño/La Niña years, especially in the Northern region.
DOI: 10.6084/m9.figshare.8227094.v1
title: EVALUATION OF SURGICAL TREATMENT OF ROTATOR CUFF ANTEROSUPERIOR TEARS ARTHROSCOPICALLY

description: ABSTRACT Objective: To evaluate the functional result of arthroscopic treatment in anterosuperior rotator cuff tears. Methods: Fifty-six patients submitted to arthroscopic repair of anterosuperior rotator cuff tears were evaluated. The follow-up time was five year and five months. All the tears were diagnosed by detailed physical and imaging examination. Statistical analysis was used to compare the preoperative and postoperative results of range of motion and the UCLA score, with Wilcoxon signed-rank test, 5% significance level (p≤0.05), the relationship between the subscapularis tear and postoperative results using the Mann-Whitney test, and between the pain length and the UCLA scale using Spearman's correlation. Results: A statistically significant improvement (p&lt;0.001) was found, comparing the range of motion and the UCLA preoperatively and postoperatively. 39% of the cases were classified as excellent, 33.9% as good, 23.7% as regular and 3.4% as bad results. A statistically significant relationship was found between the subscapularis tear type and the functional state, the pain length and the postoperative UCLA scale. Five complications, four reruptures and one adhesive capsulitis were found. Conclusions: The arthroscopic treatment for anterosuperior tears presented satisfactory results, with 8.5% of complications. Level of Evidence IV, Case series.
DOI: 10.6084/m9.figshare.8227082
title: SLAP IV IN OVERHEAD SPORTS PRACTICE

description: ABSTRACT Superior labral tear from anterior to posterior (SLAP) is the most common disease in overhead sports practice. Objective: to evaluate the functional outcome after tenodesis of long head biceps tendon (LHBT) in high-performance patients with isolated SLAP lesion refractory to conservative treatment. Methods: Patients underwent the same open repair procedure, using an interference screw. Results: Both patients presented good clinical results and returned to the sport with performance similar to that prior to the injury. Conclusion: The results favor the surgical treatment of these athletes with SLAP IV. Level of Evidence IV, Série de Casos.
DOI: 10.6084/m9.figshare.8227085
title: PROXIMAL HUMERUS FRACTURE WITH LOCKING PLATE: FUNCTIONAL AND RADIOGRAPHIC RESULTS

description: ABSTRACT Objective: To correlate the functional outcome and radiographic indices of proximal humerus fractures treated with locking plate. Methods: Seventy patients with proximal humerus fractures treated with locking plate, with mean follow-up of 30 months. These patients were analyzed for the score of the University of California, Los Angeles (UCLA) for the operated shoulder, range of motion measurements and radiography of both shoulders. After that, a graphical correlation was established between the radiographic measurements and the functional outcomes. Results: 78% good and excellent results according to the UCLA score, with mean130° elevation; 45° lateral rotation; and thumb-T10 medial rotation. The type of fracture according to the Neer classification and age had a significant correlation with the range of motion. An association was found between the lowest mean elevation and the UCLA score when the neck-shaft angle variation in the antero-posterior plane was greater than 15° varus (p &lt;0.001). Conclusion: The variation of the neck-shaft angle measurement in the anteroposterior plane showed significant correlation with the range of motion and can be one of the predictors of functional results in proximal humerus fractures treated with locking plate. Level of evidence III, Retrospective Study.
DOI: 10.6084/m9.figshare.8227088.v1
title: Statistical Analysis of Dry and Rainy Event of Maranhão Rainfall

description: Abstract The state of Maranhão is located in a transition zone between the northeastern semi-arid region, the hot and humid Amazon region and the central Brazilian plains. It presents well defined climatic conditions, with normally dry winter and predominant rains in autumn and summer. Considering the importance of detecting and specifying rainfall anomalies in the State, the present study used multivariate analysis techniques to find spatial and temporal patterns of SPI-6, and to quantify extreme dry and rainy events according to their frequency and period for the years of 1987 to 2015. The results showed that by the semester scale of SPI, the state is divided into five homogeneous regions, and that the mode of variability of SPI-6 explains well the rainfall regime, emphasizing that the state has two well-defined rainfall seasons. The results also showed that the highest incidences of drought events occurred in the south and the highest rains were recorded in the north of the state of Maranhão. Most cases of extreme dry/rainy events occurred in El Niño/La Niña years, especially in the Northern region.