cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7511738
title: EGG WHITE DEHYDRATION BY ATOMIZATION

description: Abstract The aim of this study was to evaluate the yield, microbiological, physical, and chemical characteristics of powdered egg white obtained by spray drying at different temperatures. The spray drying air temperatures were 90 °C, 120 °C, and 150 °C, with five repetitions of each treatment. Yield rate was calculated by the ratio between powdered egg white and fresh egg white. The powdered egg whites were analyzed regarding moisture, protein, lipids, ash, coagulase-positive staphylococci, Salmonella spp, and coliforms at 45 °C. Color analysis was performed with the Lab space and ΔE was calculated from these values. The data were subjected to analysis of variance and Tukeys test at 5% significance. The spray drying air temperature affected the moisture of the powdered egg whites, without influencing the concentrations of proteins, lipids, and ash, nor the microbiological analyzes. The drying at 150 °C provided higher yield rate, but caused the darkening and the increase in the yellowness of the powdered egg white.
DOI: 10.6084/m9.figshare.7511738.v1
title: EGG WHITE DEHYDRATION BY ATOMIZATION

description: Abstract The aim of this study was to evaluate the yield, microbiological, physical, and chemical characteristics of powdered egg white obtained by spray drying at different temperatures. The spray drying air temperatures were 90 °C, 120 °C, and 150 °C, with five repetitions of each treatment. Yield rate was calculated by the ratio between powdered egg white and fresh egg white. The powdered egg whites were analyzed regarding moisture, protein, lipids, ash, coagulase-positive staphylococci, Salmonella spp, and coliforms at 45 °C. Color analysis was performed with the Lab space and ΔE was calculated from these values. The data were subjected to analysis of variance and Tukeys test at 5% significance. The spray drying air temperature affected the moisture of the powdered egg whites, without influencing the concentrations of proteins, lipids, and ash, nor the microbiological analyzes. The drying at 150 °C provided higher yield rate, but caused the darkening and the increase in the yellowness of the powdered egg white.
DOI: 10.6084/m9.figshare.7512866
title: Mercury in fish and sediment of Purus River, Acre State, Amazon

description: Abstract Core subject To quantify the Hg content of sediment and fish collected along the Purus River (Acre State, Amazon) in order to identify if those samples could be a potential route of Hg exposure to the population of Manoel Urbano (a riverside community). Methods The total mercury (THg) was quantified using the Cold Vapor Atomic Absorption technique. Results We collected 06 samples of sediment and 264 samples of fish. The Hg in sediments ranged between 0.038 and 0.065 µg.g–1.The results indicate that sediment is in agreement with “uncontaminated” Amazonian rivers. The carnivorous species presented the highest level of Hg on muscle (mean 0.927 μg/g–1), followed by piscivorous (mean 0.873 μg.g–1), planktophagus (mean 0.566 μg.g–1), omnivorous (mean 0.533 μg.g–1) and detritivorous (mean 0.176 μg/g–1). Fourty four percent (44%) of the total species collected presented mean levels of THg on muscle, a percentage greater than the threshold recommended by WHO. Conclusion Some species may be a route for Hg exposure. The sediment is within the normality. The authors suggest that other factors, such as culture and society, should be considered for future researches in order to promote the population healths.
DOI: 10.6084/m9.figshare.7512866.v1
title: Mercury in fish and sediment of Purus River, Acre State, Amazon

description: Abstract Core subject To quantify the Hg content of sediment and fish collected along the Purus River (Acre State, Amazon) in order to identify if those samples could be a potential route of Hg exposure to the population of Manoel Urbano (a riverside community). Methods The total mercury (THg) was quantified using the Cold Vapor Atomic Absorption technique. Results We collected 06 samples of sediment and 264 samples of fish. The Hg in sediments ranged between 0.038 and 0.065 µg.g–1.The results indicate that sediment is in agreement with “uncontaminated” Amazonian rivers. The carnivorous species presented the highest level of Hg on muscle (mean 0.927 μg/g–1), followed by piscivorous (mean 0.873 μg.g–1), planktophagus (mean 0.566 μg.g–1), omnivorous (mean 0.533 μg.g–1) and detritivorous (mean 0.176 μg/g–1). Fourty four percent (44%) of the total species collected presented mean levels of THg on muscle, a percentage greater than the threshold recommended by WHO. Conclusion Some species may be a route for Hg exposure. The sediment is within the normality. The authors suggest that other factors, such as culture and society, should be considered for future researches in order to promote the population healths.
DOI: 10.6084/m9.figshare.7514642.v1
title: The Reliability of the Brief Visuospatial Memory Test - Revised in Brazilian multiple sclerosis patients

description: Abstract Cognitive Impairment (CI) is a common and distressing problem in Multiple Sclerosis (MS). Its identification is complicated and sometimes omitted in the routine evaluation by neurologists. The BICAMS (Brief International Cognitive Assessment for Multiple Sclerosis) is a promising tool to overcome this difficulty. However, there is some concern regarding the subjectivity in scoring of the BVMT-R (Brief Visuospatial Memory Test - Revised), one of its components. Objective: To evaluate the reliability of the BVMT-R in a sample of Brazilian MS patients, with the measure being administered and scored by neurologists. Methods: BICAMS was applied to seventy subjects comprising forty patients diagnosed with MS and thirty healthy controls. In the MS patients group, the coefficients of agreement between three different raters, using the same protocols, and the internal consistency of the BVMT-R were assessed. Also, the coefficients of correlation of the BVMT-R with the other tests of the BICAMS, CVLT II (California Verbal Learning Test II) and SDMT (Symbol Digit Modalities Test), and their respective effect sizes were calculated. Results: the BVMT-R presented a moderate inter-rater coefficient of agreement (k=0.62), an excellent Intraclass Correlation Coefficient (ICC=0.85), and high internal consistency (α=0.92). The correlation between the BVMT-R and CVLT II was moderate (ρ=0.36; p&lt;0.025), but strong with the SDMT (ρ=0.60; p&lt;0.01), with a large effect size. Conclusion: The BVMT-R is a reliable instrument for assessing CI in patients with MS, having a significant association with information processing speed, an aspect which should be considered when evaluating its score.
DOI: 10.6084/m9.figshare.7514915
title: Mobile Augmented Reality enhances indoor navigation for wheelchair users

description: Introduction: Individuals with mobility impairments associated with lower limb disabilities often face enormous challenges to participate in routine activities and to move around various environments. For many, the use of wheelchairs is paramount to provide mobility and social inclusion. Nevertheless, they still face a number of challenges to properly function in our society. Among the many difficulties, one in particular stands out: navigating in complex internal environments (indoors). The main objective of this work is to propose an architecture based on Mobile Augmented Reality to support the development of indoor navigation systems dedicated to wheelchair users, that is also capable of recording CAD drawings of the buildings and dealing with accessibility issues for that population. Methods Overall, five main functional requirements are proposed: the ability to allow for indoor navigation by means of Mobile Augmented Reality techniques; the capacity to register and configure building CAD drawings and the position of fiducial markers, points of interest and obstacles to be avoided by the wheelchair user; the capacity to find the best route for wheelchair indoor navigation, taking stairs and other obstacles into account; allow for the visualization of virtual directional arrows in the smartphone displays; and incorporate touch or voice commands to interact with the application. The architecture is proposed as a combination of four layers: User interface; Control; Service; and Infrastructure. A proof-of-concept application was developed and tests were performed with disable volunteers operating manual and electric wheelchairs. Results The application was implemented in Java for the Android operational system. A local database was used to store the test building CAD drawings and the position of fiducial markers and points of interest. The Android Augmented Reality library was used to implement Augmented Reality and the Blender open source library handled the basis for implementing directional navigation arrows. OpenGL ES provided support for various graphics and mathematical transformations for embedded systems, such as smartphones. Experiments were performed in an academic building with various labs, classrooms and male and female bathrooms. Two disable volunteers using wheelchairs showed no difficulties to interact with the application, either by entering touch or voice commands, and to navigate within the testing environment with the help of the navigational arrows implemented by the augmented reality modules. Conclusion The novel features implemented in the proposed architecture, with special emphasis on the use of Mobile Augmented Reality and the ability to identify the best routes free of potential hazards for wheelchair users, were capable of providing significant benefits for wheelchair indoor navigation when compared to current techniques described in the literature.
DOI: 10.6084/m9.figshare.7514915.v1
title: Mobile Augmented Reality enhances indoor navigation for wheelchair users

description: Introduction: Individuals with mobility impairments associated with lower limb disabilities often face enormous challenges to participate in routine activities and to move around various environments. For many, the use of wheelchairs is paramount to provide mobility and social inclusion. Nevertheless, they still face a number of challenges to properly function in our society. Among the many difficulties, one in particular stands out: navigating in complex internal environments (indoors). The main objective of this work is to propose an architecture based on Mobile Augmented Reality to support the development of indoor navigation systems dedicated to wheelchair users, that is also capable of recording CAD drawings of the buildings and dealing with accessibility issues for that population. Methods Overall, five main functional requirements are proposed: the ability to allow for indoor navigation by means of Mobile Augmented Reality techniques; the capacity to register and configure building CAD drawings and the position of fiducial markers, points of interest and obstacles to be avoided by the wheelchair user; the capacity to find the best route for wheelchair indoor navigation, taking stairs and other obstacles into account; allow for the visualization of virtual directional arrows in the smartphone displays; and incorporate touch or voice commands to interact with the application. The architecture is proposed as a combination of four layers: User interface; Control; Service; and Infrastructure. A proof-of-concept application was developed and tests were performed with disable volunteers operating manual and electric wheelchairs. Results The application was implemented in Java for the Android operational system. A local database was used to store the test building CAD drawings and the position of fiducial markers and points of interest. The Android Augmented Reality library was used to implement Augmented Reality and the Blender open source library handled the basis for implementing directional navigation arrows. OpenGL ES provided support for various graphics and mathematical transformations for embedded systems, such as smartphones. Experiments were performed in an academic building with various labs, classrooms and male and female bathrooms. Two disable volunteers using wheelchairs showed no difficulties to interact with the application, either by entering touch or voice commands, and to navigate within the testing environment with the help of the navigational arrows implemented by the augmented reality modules. Conclusion The novel features implemented in the proposed architecture, with special emphasis on the use of Mobile Augmented Reality and the ability to identify the best routes free of potential hazards for wheelchair users, were capable of providing significant benefits for wheelchair indoor navigation when compared to current techniques described in the literature.
DOI: 10.6084/m9.figshare.11390952
title: Influence of hydrofluoric acid etching time and concentration on shear bond strength of metal brackets to ceramic surfaces

description: Abstract Introduction Surface treatment prior to bonding ceramic brackets with hydrofluoric acid is indicated because of its ability to promote morphological changes necessary for adhesion. Objective To evaluate the shear bond strength (RUC) of metal brackets bonded to the feldspar ceramic surface under the action of hydrofluoric acid (AF), in different concentrations (5% and 10%) and different application times (30 and 60 seconds). Material and method Four nickel-chrome metal blocks that received an application of feldspathic ceramic were used, to which 80 metal brackets (Abzil/3M) were bonded and divided into 4 Groups (n=20) according to the acid etching procedure. The blocks were etched with 5% hydrofluoric acid for 30 and 60 seconds (AF5/30 and AF5/60, respectively) and 10% hydrofluoric acid for 30 and 60 seconds (AF10/30, AF10/60, respectively). The resin composite used was Transbond XT (3M) and the presence of a glazer was maintained on the ceramic surface. The specimens were placed on a Universal test machine Instron 4411 (Instron Corp, USA) to which a chisel was adapted to perform the shear test at a speed of 1mm/min. The data were submitted to the analysis of variance (ANOVA) and the Adhesive Remnant Index was evaluated. Result In the time interval of 30 seconds, there was no significant difference for the 5% and 10% hydrofluoric acid concentrations. In the 60-second time interval, the 10% concentration showed significantly higher shear bond strength values (p&lt;0.05). The ARI showed predominance of scores 1 and 2. Conclusion It was concluded that 10% hydrofluoric acid showed higher shear bond strength values in 60 seconds of etching, while 5% hydrofluoric acid showed no significant difference between the etching times.
DOI: 10.6084/m9.figshare.11314157
title: Periodontal attachment loss and associations with sociodemographic and behavioral risk indicators

description: Abstract Introduction Clinical attachment loss (CAL) has been indicated as a determining parameter for the study of risk indicators of chronic periodontitis. Objective To describe the prevalence, severity and extent of CAL in a population group that abstains from alcohol and tobacco use and to evaluate associations with sociodemographic and behavioral characteristics of participants. Method A sample of 420 adult individuals, participants of the Advento Study (São Paulo) were submitted to a periodontal examination of six sites per tooth and answered a structured questionnaire. Associations were verified by multiple logistic regression analysis. Result Prevalence of periodontitis was 20.7% and gingivitis 38.8%; mean CAL was 1.38mm (±0.5) and dental loss 5.4 (±9.0). Prevalence of CAL ≥3 mm, ≥4 mm and ≥6 mm was 69.7%, 31.7% and 9.6% of the individuals, affecting 11.4%, 4.4% and 1.2% of the teeth per individual, respectively. After adjustments, there was a significant association of CAL ≥4 mm with males, over 55 years of age, low education, visible plaque, irregular self-care, lack of oral hygiene guidance and reported systemic disease. For CAL ≥6 mm, there was a higher odds ratio for the variables age group and systemic disease. Conclusion The population group studied presented low extension and severity of CAL, possibly due to the sample characteristics. The risk associations found confirm the need for comprehensive patient care, including encouraging prevention and control of chronic diseases, along with specific oral hygiene guidelines.
DOI: 10.6084/m9.figshare.11390952.v1
title: Influence of hydrofluoric acid etching time and concentration on shear bond strength of metal brackets to ceramic surfaces

description: Abstract Introduction Surface treatment prior to bonding ceramic brackets with hydrofluoric acid is indicated because of its ability to promote morphological changes necessary for adhesion. Objective To evaluate the shear bond strength (RUC) of metal brackets bonded to the feldspar ceramic surface under the action of hydrofluoric acid (AF), in different concentrations (5% and 10%) and different application times (30 and 60 seconds). Material and method Four nickel-chrome metal blocks that received an application of feldspathic ceramic were used, to which 80 metal brackets (Abzil/3M) were bonded and divided into 4 Groups (n=20) according to the acid etching procedure. The blocks were etched with 5% hydrofluoric acid for 30 and 60 seconds (AF5/30 and AF5/60, respectively) and 10% hydrofluoric acid for 30 and 60 seconds (AF10/30, AF10/60, respectively). The resin composite used was Transbond XT (3M) and the presence of a glazer was maintained on the ceramic surface. The specimens were placed on a Universal test machine Instron 4411 (Instron Corp, USA) to which a chisel was adapted to perform the shear test at a speed of 1mm/min. The data were submitted to the analysis of variance (ANOVA) and the Adhesive Remnant Index was evaluated. Result In the time interval of 30 seconds, there was no significant difference for the 5% and 10% hydrofluoric acid concentrations. In the 60-second time interval, the 10% concentration showed significantly higher shear bond strength values (p&lt;0.05). The ARI showed predominance of scores 1 and 2. Conclusion It was concluded that 10% hydrofluoric acid showed higher shear bond strength values in 60 seconds of etching, while 5% hydrofluoric acid showed no significant difference between the etching times.
DOI: 10.6084/m9.figshare.7519292
title: Temporary questions on literature and technology: a dialogue with Roger Chartier

description: ABSTRACT This paper discusses reading and technology, in an intense dialogue with the works of famous French history researcher Roger Chartier. In Brazil, he is considered an obligatory reference in subjects like edition, publishing and technologies of books. Based on a relevant bibliography by Chartier, published in Portuguese, some of his ideas and concepts about writing culture, especially before digital technologies, are compiled and discussed here. Also, relations between books publishing and literature are linked and discussed.
DOI: 10.6084/m9.figshare.7510526
title: SOURSOP LIQUOR PROCESSING: INFLUENCE OF THE PROCESS VARIABLES ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS

description: ABSTRACT: Soursop is a well-appreciated tropical fruit, both in natura and in the form of juices and nectars. Despite its wide acceptance, there is lack of its use in the preparation of other products, such as alcoholic beverages. The objective of this study was to prepare soursop liquors by varying the concentrations of pulp and sucrose syrup with different contents of total soluble solids and to evaluate the effects of these on the physical and chemical characteristics of the beverages. In the production process, the pulp (300, 400 and 500 g) was macerated with distilled alcohol for 20 days, after which it was filtered, added to the syrup (50, 60 and 70 °Brix), bottled in polyethylene bottles and subjected to an accelerated aging. All drinks resulted in alcohol levels (15.25 to 16.69% v/v) and total sugars (12.63 to 17.97%) in accordance with the standards required by law. The experiments made with the lowest concentration of pulp showed the highest yields (84.17 and 85.25%). First-order models with interactions and 95% confidence intervals were obtained. The pulp consisted of the most significant factor, influencing the largest number of responses (yield, alcohol content, dry residue, titratable acidity, titratable acidity/soluble solids ratio and luminosity). The larger coefficient of determination (R2) values were found in the models adjusted to the data of yield, dry residue, total soluble solids, titratable acidity and total sugars, which were significant and predictive, showing values greater than 0.97.
DOI: 10.6084/m9.figshare.7519292.v1
title: Temporary questions on literature and technology: a dialogue with Roger Chartier

description: ABSTRACT This paper discusses reading and technology, in an intense dialogue with the works of famous French history researcher Roger Chartier. In Brazil, he is considered an obligatory reference in subjects like edition, publishing and technologies of books. Based on a relevant bibliography by Chartier, published in Portuguese, some of his ideas and concepts about writing culture, especially before digital technologies, are compiled and discussed here. Also, relations between books publishing and literature are linked and discussed.
DOI: 10.6084/m9.figshare.7510526.v1
title: SOURSOP LIQUOR PROCESSING: INFLUENCE OF THE PROCESS VARIABLES ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS

description: ABSTRACT: Soursop is a well-appreciated tropical fruit, both in natura and in the form of juices and nectars. Despite its wide acceptance, there is lack of its use in the preparation of other products, such as alcoholic beverages. The objective of this study was to prepare soursop liquors by varying the concentrations of pulp and sucrose syrup with different contents of total soluble solids and to evaluate the effects of these on the physical and chemical characteristics of the beverages. In the production process, the pulp (300, 400 and 500 g) was macerated with distilled alcohol for 20 days, after which it was filtered, added to the syrup (50, 60 and 70 °Brix), bottled in polyethylene bottles and subjected to an accelerated aging. All drinks resulted in alcohol levels (15.25 to 16.69% v/v) and total sugars (12.63 to 17.97%) in accordance with the standards required by law. The experiments made with the lowest concentration of pulp showed the highest yields (84.17 and 85.25%). First-order models with interactions and 95% confidence intervals were obtained. The pulp consisted of the most significant factor, influencing the largest number of responses (yield, alcohol content, dry residue, titratable acidity, titratable acidity/soluble solids ratio and luminosity). The larger coefficient of determination (R2) values were found in the models adjusted to the data of yield, dry residue, total soluble solids, titratable acidity and total sugars, which were significant and predictive, showing values greater than 0.97.