cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7513940.v1
title: The hardness and chemical changes in demineralized primary dentin treated by fluoride and glass ionomer cement

description: Abstract Background Fluoride plays an important role in the control of dental caries. Aim To evaluate the chemical exchange between restoration of glass ionomer cement of high viscosity (GIC) and primary dentin with application of sodium fluoride (NaF) 2% through changes in hardness from uptake of calcium, phosphate and fluoride. Material and method Class I cavities were prepared in 40 sound primary molars, and the sample was divided into two groups (n=20) according to dentin condition: sound (1) and demineralized (2). Sub-groups (n=10) were formed to investigate the isolated action of the GIC or the association with NaF (F). This in vitro study examined the chemical exchange under two conditions, sound and demineralized dentin (pH cycling), to simulate the occurrence of mineral loss for the caries lesion. G1 and G2 received GIC restoration only; groups G1F and G2F received NaF before GIC restoration. The specimens were prepared for Knoop hardness test and micro-Raman spectroscopy. A two-way ANOVA test (α = 0.05) was used for statistical analysis. Micro-Raman data were qualitatively described. Result Increased hardness was observed in all the sites of direct contact with GIC in sound and demineralized dentin for all groups (p&lt;0.001); no difference was observed in microhardness after application of NaF (p&gt;0.05). In the evaluation of micro-Raman, direct contact between GIC and dentin for sound and demineralized dentin resulted in increased peaks of phosphate. Conclusion The exchange between GIC and demineralized dentin may induce changes of mechanical properties of the substrate, and uptake of mineral ions (phosphate) occurs without the influence of NaF.
DOI: 10.6084/m9.figshare.5671270
title: Use of vibrant in the acquisition of Portuguese as a foreign language by native American and Spanish speakers: implications for teaching

description: Abstract: Based on the theoretical postulations of Labov's Sociolinguistics, this study proposes to analyze the use of vibrant in the acquisition of the Portuguese as a foreign language by native Americans and Spanish speakers. For this purpose, it was selected types of bibliographical, field and analytics researches and, the speech from 11 American and 11 Spanish native speakers were divided in styles, which passes through informal to ones that are more formal. The results showed that the context, in which the informants use a phoneme in their native language, motivates its usage in learning Portuguese. The acquisition of phonemes of Portuguese is more rapid among the younger informants while the informant´s mother tongue structure usage is more common in informal speech styles.
DOI: 10.6084/m9.figshare.5772147
title: Simultaneous prestack seismic inversion in a carbonate reservoir

description: Abstract We applied a method of Simultaneous Prestack Seismic Inversion (SPSI) in a hydrocarbon field located in the Campos Basin, Brazil. The goal was to study the application of this method to Albian carbonate rocks of the Quissamã Formation. Based on what is found in nearby fields, this Formation potentially contains hydrocarbon accumulations that can be revealed with the inverted models. P-wave velocity (Vp), S-wave velocity (Vs) and density (ρ) curves along seven wells were used as inputs to construct 3-D initial models of acoustic impedance (Zp), shear impedance (Zs) and ρ. Wells without Vs and ρ curves had those values calculated from well-established equations. Final 3-D models were calculated from deviations in linear relationships between the logarithms of Zs and Zp, as well as between ρ and Zp, which were merged with the initial models. Interpretations of the inversion results were conducted based on patterns found along well logs such as resistivity (ILD), gamma ray (GR), density (RHOB), neutron porosity (NPHI) and sonic (DT). These analyses provided criteria to select the best inverted models. These models show low impedance anomalies that are consistent with previous studies performed with the well logs. One well in particular was interpreted as having high potential to contain hydrocarbons. This well shows an impedance pattern that allowed us to highlight other areas with the same pattern throughout the entire seismic volume.
DOI: 10.6084/m9.figshare.7511144.v1
title: Factors associated with Pap smear for the prevention of cervical cancer in a low income urban community

description: Objective: To evaluate the prevalence of prevention of cervical cancer and the factors associated with annual collection.Methods: Cross-sectional study conducted between August 2010 and June 2011 through interviews with 144 women 25-52 years old in a low income urban community in Fortaleza (CE). Were used the χ2 test and ANOVA comparing the groups never did collect, held annually and not those who made an annual basis. Variables with p values &lt;0.20 were subjected to logistic regression to estimate odds ratios (OR).Results:The proportion of women who reported annual collection was 59.3%. Remunerated employment (p=0.04), and family income (p&lt;0.01) showed significant association. In simple logistic regression, remunerated employment (OR=2.15), economic status (OR=3.32) and the having had the maximum of one pregnancy (OR=2.73) and, in multiple logistic regression, remunerated employment (OR=2.63) and the having had the maximum of one pregnancy (OR=2.60) were associated with annually periodicity for cervicovaginal smear.Conclusion:Women with remunerated employment and had no more than one pregnancy had a greater chance of achieving an annual frequency of cytology for preventing cervical cancer.
DOI: 10.6084/m9.figshare.5671270.v1
title: Use of vibrant in the acquisition of Portuguese as a foreign language by native American and Spanish speakers: implications for teaching

description: Abstract: Based on the theoretical postulations of Labov's Sociolinguistics, this study proposes to analyze the use of vibrant in the acquisition of the Portuguese as a foreign language by native Americans and Spanish speakers. For this purpose, it was selected types of bibliographical, field and analytics researches and, the speech from 11 American and 11 Spanish native speakers were divided in styles, which passes through informal to ones that are more formal. The results showed that the context, in which the informants use a phoneme in their native language, motivates its usage in learning Portuguese. The acquisition of phonemes of Portuguese is more rapid among the younger informants while the informant´s mother tongue structure usage is more common in informal speech styles.
DOI: 10.6084/m9.figshare.5772147.v1
title: Simultaneous prestack seismic inversion in a carbonate reservoir

description: Abstract We applied a method of Simultaneous Prestack Seismic Inversion (SPSI) in a hydrocarbon field located in the Campos Basin, Brazil. The goal was to study the application of this method to Albian carbonate rocks of the Quissamã Formation. Based on what is found in nearby fields, this Formation potentially contains hydrocarbon accumulations that can be revealed with the inverted models. P-wave velocity (Vp), S-wave velocity (Vs) and density (ρ) curves along seven wells were used as inputs to construct 3-D initial models of acoustic impedance (Zp), shear impedance (Zs) and ρ. Wells without Vs and ρ curves had those values calculated from well-established equations. Final 3-D models were calculated from deviations in linear relationships between the logarithms of Zs and Zp, as well as between ρ and Zp, which were merged with the initial models. Interpretations of the inversion results were conducted based on patterns found along well logs such as resistivity (ILD), gamma ray (GR), density (RHOB), neutron porosity (NPHI) and sonic (DT). These analyses provided criteria to select the best inverted models. These models show low impedance anomalies that are consistent with previous studies performed with the well logs. One well in particular was interpreted as having high potential to contain hydrocarbons. This well shows an impedance pattern that allowed us to highlight other areas with the same pattern throughout the entire seismic volume.
DOI: 10.6084/m9.figshare.7511840
title: Ethics of the use of placebos in clinical research: a proposal for decision-making algorithms

description: Abstract The use of placebos in clinical research has been a matter of considerable debate in recent years, notably when the World Medical Association published, in 2002, a note of clarification for paragraph 29 of the Helsinki Declaration. Brazil is known for its strong opposition to the flexible use of placebos. Both the Federal Council of Medicine and the National Health Council have published resolutions regulating the use of placebos in Brazil, preventing their use if there is a more effective therapeutic method already in place. The present study reinforces that position and aims to describe the various uses of placebos in clinical research, as well as examining the complex decisions relating to the ethics of their use. Additionally, the authors propose a reflection on the use of placebos through decision-making algorithms based on Brazilian ethical standards.
DOI: 10.6084/m9.figshare.14272998
title: Factors associated with the practice of Physical Activity in the Brazilian population - Vigitel 2013

description: ABSTRACT The article aims to analyze the association between Leisure Time Physical Activity and health variables in Brazilian capitals. Data from the National Surveillance System for Chronic Diseases by Telephone Survey, regarding the year 2013, were analyzed in a sample of 54,000 adults in Brazilian capitals. The Prevalence Ratios were adjusted according to age, gender and education by Poisson regression with their 95% Confidence Intervals. The prevalence of Leisure Time Physical Activity was 33.8% (95% CI: 33.0-34.6), being higher among men 41.2% (95% CI: 39.9-42, 6) than among women 27.4% (95% CI: 26.5-28.3). Being younger, more educated, of white color, having a health insurance, not smoking, and consuming the recommended fruit and vegetables increased the chance of practicing Leisure Time Physical Activity. It was also observed that the eutrophic and the overweight are more active, the obese practice less Physical Activity. It is concluded that Physical Activity is beneficial to health, making it important to invest in public health promotion policies aimed at creating opportunities for social inclusion and equity in health.
DOI: 10.6084/m9.figshare.6504701
title: Information Science and the media

description: Abstract The transformations in the field of media, driven by Information and Communication Technology, deriving from technical procedures and language, have facilitated an increase in the flow of information, as well as its visibility and circulation in society. Most importantly, the media have become strategic in contemporary societies. In spite of this, the relation between the field of Information Science and the subject remains little known. Thus, this article seeks to understand the theoretical and empirical foundations of media studies in Information Science. In particular, our focus was to identify the temporal and thematic behaviors of studies concerning the media in Information Science. It is an exploratory study of the bibliometrics and scientometrics with a quali-quantitative approach. The research universe was composed of scientific production on media in articles related to the area indexed in the Web of Science. Content analysis was used to understand the objects of the studies identified. The results enabled us to map the profile of the temporal and thematic behavior of the studies, locate the period of publication, areas of knowledge with production that are related to Information Science, and the most frequent issues addressed. Given the complexity of the topic, a more profound epistemological and pragmatic approach is envisioned for future production.
DOI: 10.6084/m9.figshare.6504701.v1
title: Information Science and the media

description: Abstract The transformations in the field of media, driven by Information and Communication Technology, deriving from technical procedures and language, have facilitated an increase in the flow of information, as well as its visibility and circulation in society. Most importantly, the media have become strategic in contemporary societies. In spite of this, the relation between the field of Information Science and the subject remains little known. Thus, this article seeks to understand the theoretical and empirical foundations of media studies in Information Science. In particular, our focus was to identify the temporal and thematic behaviors of studies concerning the media in Information Science. It is an exploratory study of the bibliometrics and scientometrics with a quali-quantitative approach. The research universe was composed of scientific production on media in articles related to the area indexed in the Web of Science. Content analysis was used to understand the objects of the studies identified. The results enabled us to map the profile of the temporal and thematic behavior of the studies, locate the period of publication, areas of knowledge with production that are related to Information Science, and the most frequent issues addressed. Given the complexity of the topic, a more profound epistemological and pragmatic approach is envisioned for future production.
DOI: 10.6084/m9.figshare.7511375
title: THE EDITORIAL DISPUTES IN THE FIELD OF THE TEXTBOOK PROGRAM FOR ELEMENTARY EDUCATION OF THE NATIONAL BOOK INSTITUTE - PLIDEF/INL (1971-1976)

description: Abstract This article analyses the disputes involving the Textbook Program for Elementary Education of the National Book Institute - Plidef/INL - and the publishing market during the years 1971 and 1976. For this purpose, the theoretical field framework of Bourdieu (1989, 1994, 1997, 2003) was used. The data were collected in government and school documents, articles in periodicals, and textbooks. The results indicate the presence of thirty-six publishing houses in the Program; however, only nine published more than 70% of titles. The results also identify various strategies employed for dissemination of the books, such as free distribution, promotional contests, and completion of training courses for teachers.
DOI: 10.6084/m9.figshare.7508246
title: Comparison of the anesthetic latency of Articaine, Lidocaine, Levobupivacaine and Ropivacaine, through "Pulp Tester"

description: INTRODUCTION : A thorough knowledge of dental anesthetics, like the lag time of the drug, can ensure the success of pain control during and after surgery. OBJECTIVE : Comparing the latency time of 4 anesthetics, in other words, the time between the deposition of the local anesthetic and when its effects become noticeable. However, this is not related with the successful pain control during and after surgery (depth of anesthesia). MATERIAL AND METHOD : We conducted a double-blind, crossover, randomized study with 30 volunteers underwent 04 procedures in one-week intervals from the posterior superior alveolar block. In the second molar being treated, the pulp tester was used at intervals of 02 minutes, considering the insensitivity of the pulp when there is no response after two consecutive tests of 80muV, peaking at 10 minutes thus determining the latency period of the anesthetic. The data were submitted to t-student test, Friedman test and Kruskal-Wallis test (p&lt;0.05). RESULT : There were no statistically significant differences (p=0.8327) between the anesthetics. In all cases the median was 2 minutes. Still, there were no significant differences between genders in relation to age (p=0.4545), as well as between the values when it attempted to observe the influence of gender in latency values (p=0.6754). CONCLUSION : Since the average lag time was identical, the choice of the drug will depend on the duration of the oral surgery and the necessity of postoperative analgesia.
DOI: 10.6084/m9.figshare.7508252
title: Influence of the addition of chlorhexidine diacetate on bond strength of a high-viscosity glass ionomer cement to sound and artificial caries-affected dentin

description: INTRODUCTION: The aim of adding chlorhexidine (CHX) to glass ionomer cements (GIC) is to improve their antibacterial property, but it may interfere with their bond to dentin. OBJECTIVE: To evaluate the influence of adding chlorhexidine diacetate at different concentrations to a high-viscosity GIC on its bond to sound and artificial caries-affected dentin. MATERIAL AND METHOD: Eighty human third molars were used, on which an area of dentin was exposed on the occlusal surface. Half of the specimens were kept sound and the other half were subjected to artificially induced caries. CHX was mixed with GIC powder at 0.5%, 1% and 2% (w/w). GIC without CHX was used as control. On each dentin surface a specimen measuring 1 mm in diameter and 1 mm high was made. The samples were kept at 37 °C and 100% humidity for 24 hours and subject to microshear testing. The results were analyzed using Kruskal-Wallis and Mann Whitney tests (α=0.05). RESULT: There was no significant difference between bond strength of sound and caries-affected dentin (p&gt;0.05). For both substrate conditions, groups GIC, GIC+0.5% CHX and GIC+1% CHX showed statistically similar bond strength (p&gt;0.05), and higher than that of GIC+2% CHX (p&lt;0.025). Cohesive and mixed failures were predominant in all groups. CONCLUSION: The addition of 0.5% and 1% chlorhexidine did not result in negative changes in the bond strength of GIC to caries-affected and sound dentin.
DOI: 10.6084/m9.figshare.7511375.v1
title: THE EDITORIAL DISPUTES IN THE FIELD OF THE TEXTBOOK PROGRAM FOR ELEMENTARY EDUCATION OF THE NATIONAL BOOK INSTITUTE - PLIDEF/INL (1971-1976)

description: Abstract This article analyses the disputes involving the Textbook Program for Elementary Education of the National Book Institute - Plidef/INL - and the publishing market during the years 1971 and 1976. For this purpose, the theoretical field framework of Bourdieu (1989, 1994, 1997, 2003) was used. The data were collected in government and school documents, articles in periodicals, and textbooks. The results indicate the presence of thirty-six publishing houses in the Program; however, only nine published more than 70% of titles. The results also identify various strategies employed for dissemination of the books, such as free distribution, promotional contests, and completion of training courses for teachers.
DOI: 10.6084/m9.figshare.14272998.v1
title: Factors associated with the practice of Physical Activity in the Brazilian population - Vigitel 2013

description: ABSTRACT The article aims to analyze the association between Leisure Time Physical Activity and health variables in Brazilian capitals. Data from the National Surveillance System for Chronic Diseases by Telephone Survey, regarding the year 2013, were analyzed in a sample of 54,000 adults in Brazilian capitals. The Prevalence Ratios were adjusted according to age, gender and education by Poisson regression with their 95% Confidence Intervals. The prevalence of Leisure Time Physical Activity was 33.8% (95% CI: 33.0-34.6), being higher among men 41.2% (95% CI: 39.9-42, 6) than among women 27.4% (95% CI: 26.5-28.3). Being younger, more educated, of white color, having a health insurance, not smoking, and consuming the recommended fruit and vegetables increased the chance of practicing Leisure Time Physical Activity. It was also observed that the eutrophic and the overweight are more active, the obese practice less Physical Activity. It is concluded that Physical Activity is beneficial to health, making it important to invest in public health promotion policies aimed at creating opportunities for social inclusion and equity in health.
DOI: 10.6084/m9.figshare.7508246.v1
title: Comparison of the anesthetic latency of Articaine, Lidocaine, Levobupivacaine and Ropivacaine, through "Pulp Tester"

description: INTRODUCTION : A thorough knowledge of dental anesthetics, like the lag time of the drug, can ensure the success of pain control during and after surgery. OBJECTIVE : Comparing the latency time of 4 anesthetics, in other words, the time between the deposition of the local anesthetic and when its effects become noticeable. However, this is not related with the successful pain control during and after surgery (depth of anesthesia). MATERIAL AND METHOD : We conducted a double-blind, crossover, randomized study with 30 volunteers underwent 04 procedures in one-week intervals from the posterior superior alveolar block. In the second molar being treated, the pulp tester was used at intervals of 02 minutes, considering the insensitivity of the pulp when there is no response after two consecutive tests of 80muV, peaking at 10 minutes thus determining the latency period of the anesthetic. The data were submitted to t-student test, Friedman test and Kruskal-Wallis test (p&lt;0.05). RESULT : There were no statistically significant differences (p=0.8327) between the anesthetics. In all cases the median was 2 minutes. Still, there were no significant differences between genders in relation to age (p=0.4545), as well as between the values when it attempted to observe the influence of gender in latency values (p=0.6754). CONCLUSION : Since the average lag time was identical, the choice of the drug will depend on the duration of the oral surgery and the necessity of postoperative analgesia.
DOI: 10.6084/m9.figshare.7508252.v1
title: Influence of the addition of chlorhexidine diacetate on bond strength of a high-viscosity glass ionomer cement to sound and artificial caries-affected dentin

description: INTRODUCTION: The aim of adding chlorhexidine (CHX) to glass ionomer cements (GIC) is to improve their antibacterial property, but it may interfere with their bond to dentin. OBJECTIVE: To evaluate the influence of adding chlorhexidine diacetate at different concentrations to a high-viscosity GIC on its bond to sound and artificial caries-affected dentin. MATERIAL AND METHOD: Eighty human third molars were used, on which an area of dentin was exposed on the occlusal surface. Half of the specimens were kept sound and the other half were subjected to artificially induced caries. CHX was mixed with GIC powder at 0.5%, 1% and 2% (w/w). GIC without CHX was used as control. On each dentin surface a specimen measuring 1 mm in diameter and 1 mm high was made. The samples were kept at 37 °C and 100% humidity for 24 hours and subject to microshear testing. The results were analyzed using Kruskal-Wallis and Mann Whitney tests (α=0.05). RESULT: There was no significant difference between bond strength of sound and caries-affected dentin (p&gt;0.05). For both substrate conditions, groups GIC, GIC+0.5% CHX and GIC+1% CHX showed statistically similar bond strength (p&gt;0.05), and higher than that of GIC+2% CHX (p&lt;0.025). Cohesive and mixed failures were predominant in all groups. CONCLUSION: The addition of 0.5% and 1% chlorhexidine did not result in negative changes in the bond strength of GIC to caries-affected and sound dentin.