cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11609955
title: Intrinsic Motivation of Medical Students from a College with Active Methodology in Brazil: a Cross-Sectional Study

description: ABSTRACT A cross-sectional study based on the Self Determination Theory to identify intrinsic motivation in the tutorial group scenario, and its associated factors in 276 medical students from a college in the Northeast of Brazil between October and December 2016. The Intrinsic Motivation Inventory was utilized following its adaptation and cross-cultural translation. Variables studied: age, gender, marital status, financial dependents, number of attempts at the university entrance exam for the medical course, current semester of study, previous undergraduate training, living with parents, choice of course by parental influence or pressure. Uni and multivariate Poisson analysis were carried out to assess the factors associated with intrinsic motivation; p &lt;0.05 was considered as the significance level for statistical purposes. Average motivation score was 3.8, which indicates motivation. In 2 nd , 6 th and 10 th semester medicine students, the final model maintained as the variable associated with intrinsic motivation those who attempted the medical school entrance exam once or twice compared to those who had had three or more attempts (PR = 0.88, 95% CI (0.79-0.97), p = 0.011). In the analyses assessed by semester, in the second semester, students who had prior undergraduate training before medical school compared to those who had not was the remaining variable (PR = 0.92, 95% IC (0.87-0.97), p = 0.005). In the sixth semester, no statistically significant difference was found, and in the tenth semester the variable of those who attempted the medical school entrance exam once or twice remained (PR = 0.65, 95% IC (0.47-0.88), p = 0.006). The students seemed to be motivated in the group tutorial activity. The fewer number of medical school entry exam attempts and having previous undergraduate training were variables that showed association with intrinsic motivation.
DOI: 10.6084/m9.figshare.11609958.v1
title: STUDY OF PARAMETERS AFFECTING THE COALESCENCE OF DIMETHYL DISULFIDE DROPS IN A MEROX UNIT

description: Abstract This study focuses on the coalescence of dimethyl disulfide drops with the mother phase at a flat aqueous-organic interface between dimethyl disulfide and different sodium hydroxide solutions. Drop coalescence is an important part of the Merox process for regenerating the solvent. A digital high-frame rate camera was used for recording drops coalescence and duration time. Drops of dimethyl disulfide were directed in different sodium hydroxide solutions as the continuous phase. Applying the experimental design method, the influences of independent variables of drop size and physical properties on coalescence time were investigated. Computational fluid dynamics (CFD) was employed to simulate the drops released from a nozzle, moving toward the interface, and the CFD results were validated by experimental data. The maximum deviation between the predicted and experimental coalescence times was 18.7%. It was found that, among the physical properties, interfacial tension plays the most important role on the coalescence time. Based on the results, a correlation for coalescence time was proposed.
DOI: 10.6084/m9.figshare.11609952
title: Multi-Element Evaluation in Black Pepper (Piper nigrum L.) According to the Processing

description: Black pepper is one of the most consumed spices worldwide and the evaluation of trace elements content is essential to promote consumer safety. In this study, concentrations of the elements As, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Se, V and Zn was determined in samples of black peppercorn (n = 25) and ground black pepper (n = 25) to verify how processing affects element concentrations. The elements were determined by inductively coupled plasma mass spectrometry and flame atomic absorption spectrometry. A principal component analysis showed that Fe, Pb and V was influenced by the processing and ground black pepper samples showed higher levels for these elements than black peppercorn. Although specific legislation for spices is not available in Brazil, results indicated that Pb concentrations in two brands of the processed samples under investigation exceeded the maximum level established by Brazilian and European legislation for vegetables and fruits. These results point to the necessity to control the processing of the black pepper, especially the grinding step.
DOI: 10.6084/m9.figshare.11609955.v1
title: Intrinsic Motivation of Medical Students from a College with Active Methodology in Brazil: a Cross-Sectional Study

description: ABSTRACT A cross-sectional study based on the Self Determination Theory to identify intrinsic motivation in the tutorial group scenario, and its associated factors in 276 medical students from a college in the Northeast of Brazil between October and December 2016. The Intrinsic Motivation Inventory was utilized following its adaptation and cross-cultural translation. Variables studied: age, gender, marital status, financial dependents, number of attempts at the university entrance exam for the medical course, current semester of study, previous undergraduate training, living with parents, choice of course by parental influence or pressure. Uni and multivariate Poisson analysis were carried out to assess the factors associated with intrinsic motivation; p &lt;0.05 was considered as the significance level for statistical purposes. Average motivation score was 3.8, which indicates motivation. In 2 nd , 6 th and 10 th semester medicine students, the final model maintained as the variable associated with intrinsic motivation those who attempted the medical school entrance exam once or twice compared to those who had had three or more attempts (PR = 0.88, 95% CI (0.79-0.97), p = 0.011). In the analyses assessed by semester, in the second semester, students who had prior undergraduate training before medical school compared to those who had not was the remaining variable (PR = 0.92, 95% IC (0.87-0.97), p = 0.005). In the sixth semester, no statistically significant difference was found, and in the tenth semester the variable of those who attempted the medical school entrance exam once or twice remained (PR = 0.65, 95% IC (0.47-0.88), p = 0.006). The students seemed to be motivated in the group tutorial activity. The fewer number of medical school entry exam attempts and having previous undergraduate training were variables that showed association with intrinsic motivation.
DOI: 10.6084/m9.figshare.11609952.v1
title: Multi-Element Evaluation in Black Pepper (Piper nigrum L.) According to the Processing

description: Black pepper is one of the most consumed spices worldwide and the evaluation of trace elements content is essential to promote consumer safety. In this study, concentrations of the elements As, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Se, V and Zn was determined in samples of black peppercorn (n = 25) and ground black pepper (n = 25) to verify how processing affects element concentrations. The elements were determined by inductively coupled plasma mass spectrometry and flame atomic absorption spectrometry. A principal component analysis showed that Fe, Pb and V was influenced by the processing and ground black pepper samples showed higher levels for these elements than black peppercorn. Although specific legislation for spices is not available in Brazil, results indicated that Pb concentrations in two brands of the processed samples under investigation exceeded the maximum level established by Brazilian and European legislation for vegetables and fruits. These results point to the necessity to control the processing of the black pepper, especially the grinding step.
DOI: 10.6084/m9.figshare.11609949
title: Human Resources Management of Temporary Agency Workers

description: ABSTRACT This study analyzed the extent to which the Social Exchange Theory can be used to explain the answers of temporary agency workers’ (TAW). We applied a questionnaire to a sample of 953 TAW and used Structural Equation Models (SEM) to analyze the results. We verified that the system of human resource management related positively with workers' affective commitment (β = 0,58; p &lt; 0,01) and engagement (β = 0,24; p &lt; 0,01), explained 40% e 30% of these variables respectively. The psychological contract fulfillment partially mediated the relationship between this system and TAW’ positive answers. One important implication of this study is that it confirms that investment with TAW has a return, i.e. positive workers outcome, which is important to organizational efficacy.
DOI: 10.6084/m9.figshare.11609946
title: Prevalence and factors associated with the occurrence of urinary incontinence during pregnancy

description: Abstract Objectives: to determine the prevalence of urinary incontinence (UI) during pregnancy, to identify and quantify the factors associated with gestational UI. Methods: a cross-sectional study carried out with women admitted for deliveries in all maternity wards in the city of Botucatu (São Paulo). Data were collected through a structured questionnaire, based on the literature, containing questions about the occurrence of UI, its types, risk factors and moments when urinary losses occurred. Associations between UI and the predictive variables were analyzed with logistic regression models. Results: 950 women were interviewed, out of which 472 complained of urinary losses during pregnancy, resulting in a prevalence of 49.68% (CI95%= 46.51 - 52.86). The majority (61.8%) were classified as mixed UI. Among the covariates investigated, smoking (OR= 4.56), illicit drugs use (OR= 25.14), stimulant foods (OR= 1.84), constipation (OR=1.99), hypertensive disorders during gestation (OR= 3.23), gestational diabetes mellitus (OR= 2.89), parity (OR= 1.52) and previous caesarean sections (OR= 2.56) increased the chance of urinary losses during pregnancy. Conclusions: there was a high prevalence of UI during pregnancy. This condition was strongly associated with lifestyle habits and gestational morbidities. Finally, it is worth high-lighting the fact that delivery via caesarean section increased the chance of UI in subsequent pregnancies.
DOI: 10.6084/m9.figshare.11609949.v1
title: Human Resources Management of Temporary Agency Workers

description: ABSTRACT This study analyzed the extent to which the Social Exchange Theory can be used to explain the answers of temporary agency workers’ (TAW). We applied a questionnaire to a sample of 953 TAW and used Structural Equation Models (SEM) to analyze the results. We verified that the system of human resource management related positively with workers' affective commitment (β = 0,58; p &lt; 0,01) and engagement (β = 0,24; p &lt; 0,01), explained 40% e 30% of these variables respectively. The psychological contract fulfillment partially mediated the relationship between this system and TAW’ positive answers. One important implication of this study is that it confirms that investment with TAW has a return, i.e. positive workers outcome, which is important to organizational efficacy.
DOI: 10.6084/m9.figshare.11609943
title: The ineffectiveness of antimicrobial photodynamic therapy in the absence of preincubation of the microorganisms in the photosensitizer

description: Abstract Introduction: Considering its potential as an alternative therapy to combat multiresistant bacteria, photodynamic therapy has been improved and better studied in recent years, and determining its optimized application patterns is important. Objective: This study aimed to evaluate the action of antimicrobial photodynamic therapy mediated by methylene blue in the absence of preincubation of infectious agents in the photosensitizer. Method: Standard strains of Staphylococcus aureus and Pseudomonas aeruginosa were used, which was or was not submitted to two methylene blue concentrations (0.1 μg/mL and 500 mg/mL) applied alone or in combination with a variety of red laser emission parameters (660 nm); in both cases, the streak was performed immediately after mixing between the photosensitizer and the solution containing the bacteria. Results: In the dishes with only methylene blue application neither antibacterial was produced, nor inhibition at the application points of the photodynamic therapy in the case of the bacterium Pseudomonas aeruginosa. However, in the cultures of Staphylococcus aureus in which laser emission was associated with the concentration of 500 mg/mL of the photosensitizer, inhibition was present at the laser application points. Conclusion: The time of exposure to the photosensitizer prior to the application of phototherapy seems to be an essential factor for the optimized action of photodynamic therapy, especially in the case of Gram-negative bacteria.
DOI: 10.6084/m9.figshare.11609943.v1
title: The ineffectiveness of antimicrobial photodynamic therapy in the absence of preincubation of the microorganisms in the photosensitizer

description: Abstract Introduction: Considering its potential as an alternative therapy to combat multiresistant bacteria, photodynamic therapy has been improved and better studied in recent years, and determining its optimized application patterns is important. Objective: This study aimed to evaluate the action of antimicrobial photodynamic therapy mediated by methylene blue in the absence of preincubation of infectious agents in the photosensitizer. Method: Standard strains of Staphylococcus aureus and Pseudomonas aeruginosa were used, which was or was not submitted to two methylene blue concentrations (0.1 μg/mL and 500 mg/mL) applied alone or in combination with a variety of red laser emission parameters (660 nm); in both cases, the streak was performed immediately after mixing between the photosensitizer and the solution containing the bacteria. Results: In the dishes with only methylene blue application neither antibacterial was produced, nor inhibition at the application points of the photodynamic therapy in the case of the bacterium Pseudomonas aeruginosa. However, in the cultures of Staphylococcus aureus in which laser emission was associated with the concentration of 500 mg/mL of the photosensitizer, inhibition was present at the laser application points. Conclusion: The time of exposure to the photosensitizer prior to the application of phototherapy seems to be an essential factor for the optimized action of photodynamic therapy, especially in the case of Gram-negative bacteria.
DOI: 10.6084/m9.figshare.11609940
title: Microwave Assisted Ultra-Fast Method to Synthesize Carbonate-Phosphates, Na3MCO3PO4 (M = Mn, Fe, Co, Ni) - Relevant Materials Applied in Sodium-Ion Batteries

description: Although largely used in mobiles and electric vehicles applications, insertion batteries based on Li-ion technology are high-cost devices. These applications require high-performance energy storage systems with high-energy and high-power densities, which are better attained by Li-ion technology. However, stationary applications such as power plants and uninterruptible power supplies (UPS) mainly require low-cost energy storage devices. In this scenario Na-ion insertion batteries feature as a cheaper option for such applications. Among the several compounds for use as cathode in Na-batteries, a largely studied class of compounds are the sodium-carbonate-phosphates, Na3MCO3PO4 (M = Mn, Fe, Co or Ni), with structure analogue to the mineral sidorenkite. In this work, it was developed a new microwave-assisted hydrothermal method as an ultra-fast way to prepare sodium-carbonate-phosphate compounds. This methodology results in high-quality materials with general formula Na3MCO3PO4 (M = Mn, Fe, Co or Ni) upon only 5 min processing time. Characterization techniques indicate highly ordered materials with sidorenkite-like phase and different morphologies or crystal habits, including plates, rods, and a ‘starfruit’ shape. As a proof-of-application the Mn-based material was evaluated from electrochemical tests for Na+ insertion reactions. The obtained results evidence initial discharge capacity of 107 mA h g-1 with good reversible capacity (65 mA h g-1) after several charge/discharge cycles.
DOI: 10.6084/m9.figshare.11609937
title: Center of gravity oscillations in HTLV-1-associated myelopathy/tropical spastic paraparesis

description: Abstract Introduction: Postural control in individuals with HTLV-1-associated myelopathy or tropical spastic paraparesis (HAM/TSP) is usually compromised, which increases the risk of falls, makes it difficult to perform activities of daily living, and impairs the quality of life. The profile of the center of gravity oscillations in this population is unknown and may aid in clinical follow-up and research. Objective: To compare the stabilometric values between HAM/TSP and uninfected individuals and verify the existence of correlations between stabilometric variables and the Berg Balance Scale (BBS). Method: A cross-sectional observational study was performed with infected individuals, classified as defined and likely (WHO criteria), compared to accompanying persons and seronegative relatives. A baropodometry platform (Footwork®) was used to obtain the oscillation values of the body’s center of gravity in total oscillation area (TOA), anterior-posterior oscillation (APO) and lateral oscillation (LO). Mean values were correlated with BBS by Spearman’s Correlation (5% alpha). Approved by the ethical committee of Escola Bahiana de Medicina e Saúde Pública under Opinion 49634815.2.0000.5628. Results: An asymmetric distribution of all the stabilometric variables analyzed in the HAM/TSP population was found, different from the uninfected group (p &lt; 0.05). It was also possible to verify strong to moderate and inverse correlations between the variables of center of gravity oscillation with the scores obtained in BBS, especially for TOA and LO. Conclusion: People with HAM/TSP presented higher values for the center of gravity oscillations and these were correlated with the BBS in the balance evaluation.
DOI: 10.6084/m9.figshare.11609940.v1
title: Microwave Assisted Ultra-Fast Method to Synthesize Carbonate-Phosphates, Na3MCO3PO4 (M = Mn, Fe, Co, Ni) - Relevant Materials Applied in Sodium-Ion Batteries

description: Although largely used in mobiles and electric vehicles applications, insertion batteries based on Li-ion technology are high-cost devices. These applications require high-performance energy storage systems with high-energy and high-power densities, which are better attained by Li-ion technology. However, stationary applications such as power plants and uninterruptible power supplies (UPS) mainly require low-cost energy storage devices. In this scenario Na-ion insertion batteries feature as a cheaper option for such applications. Among the several compounds for use as cathode in Na-batteries, a largely studied class of compounds are the sodium-carbonate-phosphates, Na3MCO3PO4 (M = Mn, Fe, Co or Ni), with structure analogue to the mineral sidorenkite. In this work, it was developed a new microwave-assisted hydrothermal method as an ultra-fast way to prepare sodium-carbonate-phosphate compounds. This methodology results in high-quality materials with general formula Na3MCO3PO4 (M = Mn, Fe, Co or Ni) upon only 5 min processing time. Characterization techniques indicate highly ordered materials with sidorenkite-like phase and different morphologies or crystal habits, including plates, rods, and a ‘starfruit’ shape. As a proof-of-application the Mn-based material was evaluated from electrochemical tests for Na+ insertion reactions. The obtained results evidence initial discharge capacity of 107 mA h g-1 with good reversible capacity (65 mA h g-1) after several charge/discharge cycles.
DOI: 10.6084/m9.figshare.11609937.v1
title: Center of gravity oscillations in HTLV-1-associated myelopathy/tropical spastic paraparesis

description: Abstract Introduction: Postural control in individuals with HTLV-1-associated myelopathy or tropical spastic paraparesis (HAM/TSP) is usually compromised, which increases the risk of falls, makes it difficult to perform activities of daily living, and impairs the quality of life. The profile of the center of gravity oscillations in this population is unknown and may aid in clinical follow-up and research. Objective: To compare the stabilometric values between HAM/TSP and uninfected individuals and verify the existence of correlations between stabilometric variables and the Berg Balance Scale (BBS). Method: A cross-sectional observational study was performed with infected individuals, classified as defined and likely (WHO criteria), compared to accompanying persons and seronegative relatives. A baropodometry platform (Footwork®) was used to obtain the oscillation values of the body’s center of gravity in total oscillation area (TOA), anterior-posterior oscillation (APO) and lateral oscillation (LO). Mean values were correlated with BBS by Spearman’s Correlation (5% alpha). Approved by the ethical committee of Escola Bahiana de Medicina e Saúde Pública under Opinion 49634815.2.0000.5628. Results: An asymmetric distribution of all the stabilometric variables analyzed in the HAM/TSP population was found, different from the uninfected group (p &lt; 0.05). It was also possible to verify strong to moderate and inverse correlations between the variables of center of gravity oscillation with the scores obtained in BBS, especially for TOA and LO. Conclusion: People with HAM/TSP presented higher values for the center of gravity oscillations and these were correlated with the BBS in the balance evaluation.
DOI: 10.6084/m9.figshare.11609925
title: “Manifestations of the Heart”: Meanings Attributed to the Disease by Pre-surgical Cardiac Patients

description: ABSTRACT This study aimed to explore the meanings attributed to the cardiac disease by pre-surgical outpatients in the South of Brazil. It is a clinical and qualitative study, characterized as exploratory and descriptive. Data was collected through semi-structured interviews and auto-photography, proposed to 15 individuals. The use of thematic analysis resulted in the following categories which emerged: Confrontation with the disease: questioning existing knowledge, denial of the disease, disease and work, and ruptured sexuality. Results highlighted difficulties of the participants in regards to the appropriation of the disease condition as well as its acceptance. This result points out the need for health care actions that may help cardiac pre-surgical patients to restructure their possibilities of life.
DOI: 10.6084/m9.figshare.11609925.v1
title: “Manifestations of the Heart”: Meanings Attributed to the Disease by Pre-surgical Cardiac Patients

description: ABSTRACT This study aimed to explore the meanings attributed to the cardiac disease by pre-surgical outpatients in the South of Brazil. It is a clinical and qualitative study, characterized as exploratory and descriptive. Data was collected through semi-structured interviews and auto-photography, proposed to 15 individuals. The use of thematic analysis resulted in the following categories which emerged: Confrontation with the disease: questioning existing knowledge, denial of the disease, disease and work, and ruptured sexuality. Results highlighted difficulties of the participants in regards to the appropriation of the disease condition as well as its acceptance. This result points out the need for health care actions that may help cardiac pre-surgical patients to restructure their possibilities of life.