cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9871208
title: Evaluation of the bond strength of a ceramics of zirconia oxide subjected to surface treatments by abrasion

description: Abstract Introduction Adhesive cementation, with pure ceramics, is a relevant step in establishing the longevity of prosthetic works. Being these, the best materials used for the replacement of lost teeth, in order to rehabilitate the smile. The ceramic zirconia system does not benefit from the treatment and planning needs for its surface, effectively in adhesive therapy. Objective Evaluate the results of different blasting techniques and application of bonding agent for metals and ceramics (Ceramill ZI®) by means of a tensile test in two different surface treatments. Material and method Twenty samples of Ceramill Zi® (n = 20), cylindrical and joined with resin cooling (Multilink®), were prepared, forming 10 specimens (n = 10). The first 10 ingredients were formed by 7 experimental groups and they received 2 surface problems: abrasion and application of silane bonding agents. Result The research resulted in fracture resistance of Rocatec® silica specimens. The values of tensile strength, measured in MPa, of groups 1 to 7, were: 2.27; 4.48; 8.06; 8.32; 9.15; 10.56 and 10.70. We observe how to enter the groups are statistically significant, except between groups 3 and 4 and between 6 and 7. Conclusion The results of the ceramic surface treatment were based on no silicate method, promoting the union of results with Ceramill ZI® and cemented with Multilink®.
DOI: 10.6084/m9.figshare.7510832.v1
title: The Use of Geostatistics in the Assessment of Hydrogeological Parameters to Map the Composition of the Intrinsic Vulnerability of Aquifers.

description: ABSTRACT The aim of this study is to perform a geostatistical estimation of hydrogeological parameters to compose the intrinsic vulnerability map for an aquifer. The study presents an exploratory analysis of well data extracted from the Groundwater Information System (SIAGAS), which refer to parameters such as degree of confining, lithology and static level. Therefore, initially, among other procedures, we look for inconsistent data, we produce descriptive statistics and we also apply a normality test to the dataset. The following steps were to make up the primary space description of the respective parameters based on the corresponding identified patterns, randomness and grouping of well data in addition to exploring the existence of a tendency along certain directions. After the preliminary steps, the geostatistical methodology is then applied divided into three phases. The first refers to the variogram study, characterized by the construction of the experimental variograms. In the second phase, automatic adjustment is made to these variograms for three mathematical models: spherical, exponential and gaussian. Then, by cross validation, the performance is estimated for the different models adjusted using statistical indicators. After validation of these models, the last phase takes place, in which we perform the geostatistical estimation by kriging. The estimated values of hydrogeological parameters, when jointly multiplied, composes the estimation of the intrinsic vulnerability index illustrated in the form of a map. This proposal was applied in an area partially covering the city of Belém. The results showed that the methodological approach represents an excellent planning and management tool for the protection of groundwater aquifers.
DOI: 10.6084/m9.figshare.7510832
title: The Use of Geostatistics in the Assessment of Hydrogeological Parameters to Map the Composition of the Intrinsic Vulnerability of Aquifers.

description: ABSTRACT The aim of this study is to perform a geostatistical estimation of hydrogeological parameters to compose the intrinsic vulnerability map for an aquifer. The study presents an exploratory analysis of well data extracted from the Groundwater Information System (SIAGAS), which refer to parameters such as degree of confining, lithology and static level. Therefore, initially, among other procedures, we look for inconsistent data, we produce descriptive statistics and we also apply a normality test to the dataset. The following steps were to make up the primary space description of the respective parameters based on the corresponding identified patterns, randomness and grouping of well data in addition to exploring the existence of a tendency along certain directions. After the preliminary steps, the geostatistical methodology is then applied divided into three phases. The first refers to the variogram study, characterized by the construction of the experimental variograms. In the second phase, automatic adjustment is made to these variograms for three mathematical models: spherical, exponential and gaussian. Then, by cross validation, the performance is estimated for the different models adjusted using statistical indicators. After validation of these models, the last phase takes place, in which we perform the geostatistical estimation by kriging. The estimated values of hydrogeological parameters, when jointly multiplied, composes the estimation of the intrinsic vulnerability index illustrated in the form of a map. This proposal was applied in an area partially covering the city of Belém. The results showed that the methodological approach represents an excellent planning and management tool for the protection of groundwater aquifers.
DOI: 10.6084/m9.figshare.9871208.v1
title: Evaluation of the bond strength of a ceramics of zirconia oxide subjected to surface treatments by abrasion

description: Abstract Introduction Adhesive cementation, with pure ceramics, is a relevant step in establishing the longevity of prosthetic works. Being these, the best materials used for the replacement of lost teeth, in order to rehabilitate the smile. The ceramic zirconia system does not benefit from the treatment and planning needs for its surface, effectively in adhesive therapy. Objective Evaluate the results of different blasting techniques and application of bonding agent for metals and ceramics (Ceramill ZI®) by means of a tensile test in two different surface treatments. Material and method Twenty samples of Ceramill Zi® (n = 20), cylindrical and joined with resin cooling (Multilink®), were prepared, forming 10 specimens (n = 10). The first 10 ingredients were formed by 7 experimental groups and they received 2 surface problems: abrasion and application of silane bonding agents. Result The research resulted in fracture resistance of Rocatec® silica specimens. The values of tensile strength, measured in MPa, of groups 1 to 7, were: 2.27; 4.48; 8.06; 8.32; 9.15; 10.56 and 10.70. We observe how to enter the groups are statistically significant, except between groups 3 and 4 and between 6 and 7. Conclusion The results of the ceramic surface treatment were based on no silicate method, promoting the union of results with Ceramill ZI® and cemented with Multilink®.
DOI: 10.6084/m9.figshare.11266415.v1
title: Analysis of the Levels of Alteration of Aquifers Caused by the Installation of Wind Farms on Dunes on the Coast of Ceará, Brazil

description: Abstract This research evaluated the levels of alteration of aquifers caused by installation of wind farms on dunes on the coast of Ceará, using the GOD and POSH methods of vulnerability, underground flow, and the application of multivariate analysis to subsidize the monitoring of groundwater quality in the area. There were three stages of field study: registering the wells and pollution sources, measuring the water levels, and groundwater sampling for laboratory analysis. The results obtained with the GOD method demonstrate the predominance of moderate- to high natural vulnerability of the aquifer to pollution in the areas close to the wind park in the district of Amarelas (Xavier and Ziu beach) and revealed high pollution loads according to the POSH method. The directional vectors of the underground flow are meaningful for Xavier Beach (high vulnerability), the center of Amarelas (moderate vulnerability), Tapuiu and Montevideo (low vulnerability). This indicated that the wind farm may have a potential impact on the lowering of groundwater in the area. From the multivariate analysis, it is evident that the groundwater characteristics are strongly related to the geological formation of the wells (Dunas and Barreiras), showing all samples within the Tolerable Maximum Value for human consumption for TDS, hardness, turbidity, and pH. It is vital to carry out preliminary studies of the aquifers underlying the areas where wind farms are to be installed, considering the levels of vulnerability and the risks of pollution and alteration of the water supply.
DOI: 10.6084/m9.figshare.11266415
title: Analysis of the Levels of Alteration of Aquifers Caused by the Installation of Wind Farms on Dunes on the Coast of Ceará, Brazil

description: Abstract This research evaluated the levels of alteration of aquifers caused by installation of wind farms on dunes on the coast of Ceará, using the GOD and POSH methods of vulnerability, underground flow, and the application of multivariate analysis to subsidize the monitoring of groundwater quality in the area. There were three stages of field study: registering the wells and pollution sources, measuring the water levels, and groundwater sampling for laboratory analysis. The results obtained with the GOD method demonstrate the predominance of moderate- to high natural vulnerability of the aquifer to pollution in the areas close to the wind park in the district of Amarelas (Xavier and Ziu beach) and revealed high pollution loads according to the POSH method. The directional vectors of the underground flow are meaningful for Xavier Beach (high vulnerability), the center of Amarelas (moderate vulnerability), Tapuiu and Montevideo (low vulnerability). This indicated that the wind farm may have a potential impact on the lowering of groundwater in the area. From the multivariate analysis, it is evident that the groundwater characteristics are strongly related to the geological formation of the wells (Dunas and Barreiras), showing all samples within the Tolerable Maximum Value for human consumption for TDS, hardness, turbidity, and pH. It is vital to carry out preliminary studies of the aquifers underlying the areas where wind farms are to be installed, considering the levels of vulnerability and the risks of pollution and alteration of the water supply.
DOI: 10.6084/m9.figshare.5885641
title: Scientific production about Open Educational Resources

description: Abstract The present research identifies articles published in journals indexed in the Web of Science to characterize the scientific production on Open Educational Resources, in the higher education area. Descriptive and exploratory methodology of a quantitative and qualitative approach used mixed methods, constituting the research corpus by a survey strategy whose data was analyzed descriptively and through content analysis technique. As a result, it was possible to identify 115 articles of 243 researchers, published in 43 journals between 2008 and 2014. It was found that 67% of the journals with Open Educational Resources publications are of paid access, concentrating 56% of the articles in a restricted access. Institutions in the United Kingdom, Spain and Canada with researchers who have published on Open Educational Resources are all specialized in Distance Education. There was a predominance of authors working in the area of Education (48%), Computing (22%) and Engineering (11%) in comparison to other areas. In the qualitative stage, six articles were discarded so that the content analysis focused on 99 articles in English, eight in Spanish and two in Portuguese, totaling 109 articles analyzed in full. The articles were divided into seven categories: 21% of recovery and repositories, 19% of challenges, 16% of technologies, 14% of production, 13% on incentive policies and sustainability, 10% of adaptation and reuse and 4% on open courseware. It is possible to conclude that publications core focuses on a Canadian journal and 26 journals about education.
DOI: 10.6084/m9.figshare.7517225
title: Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing

description: Introduction:The Y-TZP zirconia used for prosthetic infrastructure, in some clinical situations, can be exposed to the oral environment. In these situations, a polished surface without changes is extremely important.Objective:The aim of this study was to evaluate the mean roughness (Ra) and Vickers hardness of Y-TZP zirconia (Lava™) after simulating ten years of brushing.Material and method:Thirty-six Y-TZP bar-shaped specimens (20mm X 4mm X 1.2mm) were divided into three groups: storage in distilled water (DW, n=12, control); brushing with distilled water (BDW, n=12) and brushing with distilled water and fluoride toothpaste (BFT, n=12). Brushing was performed using a brushing machine with a soft-bristled toothbrush, simulating 10 years of brushing (878.400 cycles, 100gf). The mean roughness (Ra in μm) and Vickers hardness (VHN) of all specimens were measured twice: before and after the experimental treatment, in profilometer and microhardness tester (500gf, 30 seconds), respectively. Data were analyzed using the two-way ANOVA test (α = 0.05).Result:The interaction between groups was not significant for roughness (p = 0.701) nor for hardness (p = 0.928). The final averages for Ra (μm) were equal to: DW - 0.63; BDW - 0.64; and, BFT - 0.68. The final averages for Vickers hardness (VHN) were: DW - 1301.16; BDW - 1316.60; and, BFT - 1299.58.Conclusion:It was concluded that the brushing with distilled or fluoridated toothpaste was not able to change the roughness and hardness of Y-TZP zirconia used in this study.
DOI: 10.6084/m9.figshare.5885641.v1
title: Scientific production about Open Educational Resources

description: Abstract The present research identifies articles published in journals indexed in the Web of Science to characterize the scientific production on Open Educational Resources, in the higher education area. Descriptive and exploratory methodology of a quantitative and qualitative approach used mixed methods, constituting the research corpus by a survey strategy whose data was analyzed descriptively and through content analysis technique. As a result, it was possible to identify 115 articles of 243 researchers, published in 43 journals between 2008 and 2014. It was found that 67% of the journals with Open Educational Resources publications are of paid access, concentrating 56% of the articles in a restricted access. Institutions in the United Kingdom, Spain and Canada with researchers who have published on Open Educational Resources are all specialized in Distance Education. There was a predominance of authors working in the area of Education (48%), Computing (22%) and Engineering (11%) in comparison to other areas. In the qualitative stage, six articles were discarded so that the content analysis focused on 99 articles in English, eight in Spanish and two in Portuguese, totaling 109 articles analyzed in full. The articles were divided into seven categories: 21% of recovery and repositories, 19% of challenges, 16% of technologies, 14% of production, 13% on incentive policies and sustainability, 10% of adaptation and reuse and 4% on open courseware. It is possible to conclude that publications core focuses on a Canadian journal and 26 journals about education.
DOI: 10.6084/m9.figshare.7517225.v1
title: Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing

description: Introduction:The Y-TZP zirconia used for prosthetic infrastructure, in some clinical situations, can be exposed to the oral environment. In these situations, a polished surface without changes is extremely important.Objective:The aim of this study was to evaluate the mean roughness (Ra) and Vickers hardness of Y-TZP zirconia (Lava™) after simulating ten years of brushing.Material and method:Thirty-six Y-TZP bar-shaped specimens (20mm X 4mm X 1.2mm) were divided into three groups: storage in distilled water (DW, n=12, control); brushing with distilled water (BDW, n=12) and brushing with distilled water and fluoride toothpaste (BFT, n=12). Brushing was performed using a brushing machine with a soft-bristled toothbrush, simulating 10 years of brushing (878.400 cycles, 100gf). The mean roughness (Ra in μm) and Vickers hardness (VHN) of all specimens were measured twice: before and after the experimental treatment, in profilometer and microhardness tester (500gf, 30 seconds), respectively. Data were analyzed using the two-way ANOVA test (α = 0.05).Result:The interaction between groups was not significant for roughness (p = 0.701) nor for hardness (p = 0.928). The final averages for Ra (μm) were equal to: DW - 0.63; BDW - 0.64; and, BFT - 0.68. The final averages for Vickers hardness (VHN) were: DW - 1301.16; BDW - 1316.60; and, BFT - 1299.58.Conclusion:It was concluded that the brushing with distilled or fluoridated toothpaste was not able to change the roughness and hardness of Y-TZP zirconia used in this study.
DOI: 10.6084/m9.figshare.7517357
title: Cognitive functioning in adolescents with migraine

description: Although migraine is highly prevalent in children and teenagers, it often goes undetected in these patients, resulting in underdiagnosis and inadequate treatment. Several studies have investigated cognitive changes in adults with migraine. However, there are few studies focusing on children and adolescents. Objective : To investigate cognitive performance of adolescents with migraine. Methods : Twenty-eight adolescents diagnosed with migraine and twenty-six individuals without a history of headache were recruited for the study. All participants were evaluated using standardized neuropsychological tests. Results : Adolescents with migraine had worse performance on tests evaluating short- and long-term verbal memory, attention, executive function, and speed of processing information than controls. Conclusion : Cognitive dysfunction is common in adolescents with migraine. Since the cognitive deficits found in adolescents with migraine are similar to those reported in adults with migraine, cognitive impairment seems to persist throughout life.
DOI: 10.6084/m9.figshare.14270605
title: Characterization and Pathogenicity of Fusarium oxysporum Associated with Carya illinoinensis Seedlings

description: Abstract Pecan cultivation in Brazil has gained increasingly economic importance in the southern part of the country. The objective of this work was to identify the pathogen that causes root rot in Carya illinoinensis seedlings in the nursery, through morphological, molecular and pathogenicity tests. Fungi from the genus Fusarium found in symptomatic roots of pecan seedlings were isolated in potato dextrose agar (PDA) culture medium and purified. Morphological characterization was performed in PDA and carnation leaf agar (CLA) media. For the molecular characterization, the genomic segments ITS (internal transcribed spaces), β-tub (beta-tubulin), and tef1-α (elongation fact 1-alpha) were sequenced. The pathogenicity test was performed on healthy seedlings in the greenhouse. The combination of morphological and molecular characters was fundamental for identification of the species, showing that the most suitable genes for identification were ITS and tef1-α. The causative agent of root rot in C. illinoinensis seedlings in the nursery was identified as Fusarium oxysporum.
DOI: 10.6084/m9.figshare.14270605.v1
title: Characterization and Pathogenicity of Fusarium oxysporum Associated with Carya illinoinensis Seedlings

description: Abstract Pecan cultivation in Brazil has gained increasingly economic importance in the southern part of the country. The objective of this work was to identify the pathogen that causes root rot in Carya illinoinensis seedlings in the nursery, through morphological, molecular and pathogenicity tests. Fungi from the genus Fusarium found in symptomatic roots of pecan seedlings were isolated in potato dextrose agar (PDA) culture medium and purified. Morphological characterization was performed in PDA and carnation leaf agar (CLA) media. For the molecular characterization, the genomic segments ITS (internal transcribed spaces), β-tub (beta-tubulin), and tef1-α (elongation fact 1-alpha) were sequenced. The pathogenicity test was performed on healthy seedlings in the greenhouse. The combination of morphological and molecular characters was fundamental for identification of the species, showing that the most suitable genes for identification were ITS and tef1-α. The causative agent of root rot in C. illinoinensis seedlings in the nursery was identified as Fusarium oxysporum.
DOI: 10.6084/m9.figshare.7517357.v1
title: Cognitive functioning in adolescents with migraine

description: Although migraine is highly prevalent in children and teenagers, it often goes undetected in these patients, resulting in underdiagnosis and inadequate treatment. Several studies have investigated cognitive changes in adults with migraine. However, there are few studies focusing on children and adolescents. Objective : To investigate cognitive performance of adolescents with migraine. Methods : Twenty-eight adolescents diagnosed with migraine and twenty-six individuals without a history of headache were recruited for the study. All participants were evaluated using standardized neuropsychological tests. Results : Adolescents with migraine had worse performance on tests evaluating short- and long-term verbal memory, attention, executive function, and speed of processing information than controls. Conclusion : Cognitive dysfunction is common in adolescents with migraine. Since the cognitive deficits found in adolescents with migraine are similar to those reported in adults with migraine, cognitive impairment seems to persist throughout life.
DOI: 10.6084/m9.figshare.7509752
title: The lawsuits against Health Surveillance: can one speak of 'judicialization'?

description: ABSTRACT The objective of this study is to analyze the lawsuits filed against a municipal Health Surveillance service, in the light of the phenomenon of health judicialization. It is a case study that had as documentary source the judicial processes related to Health Surveillance of the municipality of Salvador, from 2000 to 2017. Fifty actions were analyzed, 90% of which were in the form of injunctions, 28% reported the presence of tax debts as the main object of discussion and 72% requested the granting of the health permit, which was granted in most decisions. It was evidenced that the particular economic interest pervades the motivations, the arguments and the reasoning of the authors, as well as the basis of the decisions and sentences. The results indicate that one cannot speak of 'judicialization of the Health Surveillance service', in the sense that the Judiciary branch of the government is assuming some protagonism in the definition of Health Surveillance actions. In addition, they indicate that it is necessary to restructure the Health Surveillance way of working, in order to provide administrative alternatives for the resolution of conflicts.