cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9927698.v1
title: New perspectives on macular hole surgery at three years of follow-up

description: ABSTRACT Purpose: The aim of this study was to determine the functional and anatomical success rates as well as the safety of sutureless combined surgery involving vitreous base removal and internal limiting membrane peeling after Brilliant Blue G (0.5 mg/mL) staining for the management of idiopathic macular holes after three years. Methods: Forty-six eyes of 46 patients with an idiopathic macular hole were enrolled in this retrospective study. The inclusion criteria were macular holes with a minimum linear diameter below 1,500 mm, 0.05 or better decimal best-corrected visual acuity and duration of symptoms less than two years. The exclusion criteria included pregnancy, optic nerve atrophy, advanced glaucoma, and other chronic ocular diseases. The surgical procedure included internal limiting membrane peeling after Brilliant Blue G (0.5 mg/mL) staining, along with C3F8 tamponade and face-down positioning for three days postoperatively. Ophthalmologic examinations and optical coherence tomography were performed at 1 and 7 days and 1, 6, 12, 24, and 36 months postoperatively. If no anatomic closure of the macular holes occurred within the first month, the area of the internal limiting membrane peeling was enlarged in a second procedure. Multiple logistic regression and chi-squared tests were used for data analyses, and p-values of &lt;0.05 were considered significant. Results: Out of 46 eyes with a preoperative idiopathic macular hole, anatomic closure was achieved in 42 (91.3%) after one procedure and in 45 (97.8%) after an additional surgery. The median postoperative best-corrected visual acuity improvement was 0.378 (range: 0.050-0.900) decimal. None of the patients experienced macular hole reopening, surgery-related complications, or ocular complications related to the dye. Conclusion: Combined surgery including vitreous base removal and internal limiting membrane peeling after staining with Brilliant Blue G (0.5 mg/mL) for the management of idiopathic macular holes resulted in adequate staining, best-corrected visual acuity improvement, and macular hole closure with no signs of ocular toxicity at the three-year follow-up examination.
DOI: 10.6084/m9.figshare.9927701
title: Racial fluidity in the Metropolitan Region of Belo Horizonte: individual characteristics and local context in the construction of race

description: Abstract The article discusses how individual variables and neighborhood characteristics influence heteroclassification and its differences with racial self-classification, in the Belo Horizonte Metropolitan Area. The analysis seeks to understand the social construction of race and its fluidity in society, given that different types of classifications reflect distinct experiences and interpretations of race. Data used are from the BH Area Survey (2005), the Brazilian Demographic Census (2010) and the Human Development Atlas (2013), for the analysis we used logistic regression models. Results indicate that hetero-classification is influenced by individual and contextual characteristics. For those who self-identify as white, schooling, income and local racial distribution are associated with opportunities of being hetero-classified as white, whereas for individuals self-identifying as black, only schooling increases the chances of being hetero-classified as white. Thus, we conclude that there is racial fluidity in the Belo Horizonte Metropolitan Area, in the sense that classification is influenced by socioeconomic and contextual characteristics.
DOI: 10.6084/m9.figshare.9927704.v1
title: Mechanisms and biomarker candidates in pterygium development

description: ABSTRACT Pterygium pathogenesis has been mainly asso ciated with UV light exposure; however, this association remains quite controversial. The complete mechanism of pterygium also remains to be clarified. Factors such as inflammation, viral infection, oxidative stress, DNA methylation, inflammatory mediators, extracellular matrix modulators, apoptotic and oncogenic proteins, loss of heterozygosity, microsatellite instability, lymphangiogenesis, epithelial-mesenchymal cell transition, and alterations in cholesterol metabolism have been identified as causes. Several studies aimed to clarify the molecular mechanisms underlying the growth and proliferation of pterygium. Understanding its molecular basis provides new potential therapeutic targets for its prevention and treatment. A comprehensive search of the databases, namely, MedLine, EMBASE, and LILACS, was conducted with the following key words: pterygium, epidemiology, pathogenesis, biomarkers, and review. This review describes the epidemiology, clinical presentation, and current investigation of biological mediators involved in pterygium development.
DOI: 10.6084/m9.figshare.9927692
title: The association between genetic polymorphism of glutathione peroxidase 1 (rs1050450) and keratoconus in a Turkish population

description: ABSTRACT Purpose: To investigate the potential associations between keratoconus and catalase rs1001179, superoxide dismutase 2 rs4880, and glutathione peroxidase 1 rs1050450 gene polymorphisms in a Turkish population. Methods: The study group included 121 unrelated keratoconus patients and 94 unrelated healthy controls. Blood samples (200 ml) were collected from all patients and controls to isolate genomic DNA. Genotyping was performed to identify rs1001179, rs4880, and rs1050450 using real-time polymerase chain reaction (PCR). Genotype and allele frequencies were calculated; their associations with keratoconus risk were assayed, and the association with keratoconus risk and demographic factors was examined. Results: Glutathione peroxidase 1 rs1050450 polymorphism was present in 41% cases compared with 29% controls (OR=1.66; 95% CI=1.11-2.50; p=0.014). No association was observed between catalase rs1001179 and SOD2 rs4880 polymorphisms and keratoconus (for all, p&gt;0.05). Conclusions: This study evaluated possible relationships between rs1050450, rs1001179, and rs4880 polymorphisms and keratoconus susceptibility. We found a possible association between glutathione peroxidase 1 rs1050450 polymorphism and an increased risk of keratoconus. However, the genotype and allele frequencies were identical in the catalase rs1001179 and superoxide dismutase 2 rs4880 polymorphisms. Further studies are needed to analyze the effect of such variations in identifying keratoconus susceptibility.
DOI: 10.6084/m9.figshare.9927695.v1
title: STORMY WEATHER ON HIGHER EDUCATION: GLOBALIZATION AND CHANGE

description: ABSTRACTS The paper tackles the issue of the changes in universities, induced by the internationalization of higher education at the turn of the Millennium and the ensuing national reforms that have spread all over the world. Using a meso-approach of the organization, governance and performance of universities, it suggests a typology based on the tensions they experiment between two regimes of worth – the traditional one that favors “reputation” as a social evaluation vs the new one, build around a metrics-based “excellence” assessment. It finally questions the most sensitive issues and challenges they face and how they behave depending on their strategic capacity to face their resources and constraints.
DOI: 10.6084/m9.figshare.9927701.v1
title: Racial fluidity in the Metropolitan Region of Belo Horizonte: individual characteristics and local context in the construction of race

description: Abstract The article discusses how individual variables and neighborhood characteristics influence heteroclassification and its differences with racial self-classification, in the Belo Horizonte Metropolitan Area. The analysis seeks to understand the social construction of race and its fluidity in society, given that different types of classifications reflect distinct experiences and interpretations of race. Data used are from the BH Area Survey (2005), the Brazilian Demographic Census (2010) and the Human Development Atlas (2013), for the analysis we used logistic regression models. Results indicate that hetero-classification is influenced by individual and contextual characteristics. For those who self-identify as white, schooling, income and local racial distribution are associated with opportunities of being hetero-classified as white, whereas for individuals self-identifying as black, only schooling increases the chances of being hetero-classified as white. Thus, we conclude that there is racial fluidity in the Belo Horizonte Metropolitan Area, in the sense that classification is influenced by socioeconomic and contextual characteristics.
DOI: 10.6084/m9.figshare.9927683
title: KINETIC STUDIES OF HYDROLYSIS REACTION OF NaBH4 WITH γ-Al2O3 NANOPARTICLES AS CATALYST PROMOTER AND CoCl2 AS CATALYST

description: Abstract Solid-state hydrogen storage is of considerable concern as a potential hydrogen source for portable fuel cell applications. This study mainly focuses on kinetics of NaBH4/Al2O3 nanoparticles (20 nm)/H2O system with CoCl2 as catalyst and the factors that affect the hydrogen generation rate (HGR). It is observed that the reaction rate increases considerably with increase in NaBH4, Al2O3 nanoparticle (20 nm), CoCl2 and NaOH concentrations and the respective reaction orders are calculated. Hydrogen generation rate is also investigated at different temperatures (303, 313, 323 and 333 K) for constant NaBH4 (1.25 moles/L), NaOH (1.4 moles/L), CoCl2 (0.02 moles/L) and Al2O3 (0.09 moles/L) concentrations. Kinetics of the NaBH4 hydrolysis reaction increases with γ-Al2O3 nanoparticles and the calculated activation energy is 29 kJ/moles. This study also reports that a combined dual-solid-fuel system is highly efficient in terms of hydrogen storage capacities compared with a single hydride based system. Maximum hydrogen generation efficiency, observed at a mass ratio of 0.09: 0.7 (Al2O3/NaBH4), is 99.34%.
DOI: 10.6084/m9.figshare.9927683.v1
title: KINETIC STUDIES OF HYDROLYSIS REACTION OF NaBH4 WITH γ-Al2O3 NANOPARTICLES AS CATALYST PROMOTER AND CoCl2 AS CATALYST

description: Abstract Solid-state hydrogen storage is of considerable concern as a potential hydrogen source for portable fuel cell applications. This study mainly focuses on kinetics of NaBH4/Al2O3 nanoparticles (20 nm)/H2O system with CoCl2 as catalyst and the factors that affect the hydrogen generation rate (HGR). It is observed that the reaction rate increases considerably with increase in NaBH4, Al2O3 nanoparticle (20 nm), CoCl2 and NaOH concentrations and the respective reaction orders are calculated. Hydrogen generation rate is also investigated at different temperatures (303, 313, 323 and 333 K) for constant NaBH4 (1.25 moles/L), NaOH (1.4 moles/L), CoCl2 (0.02 moles/L) and Al2O3 (0.09 moles/L) concentrations. Kinetics of the NaBH4 hydrolysis reaction increases with γ-Al2O3 nanoparticles and the calculated activation energy is 29 kJ/moles. This study also reports that a combined dual-solid-fuel system is highly efficient in terms of hydrogen storage capacities compared with a single hydride based system. Maximum hydrogen generation efficiency, observed at a mass ratio of 0.09: 0.7 (Al2O3/NaBH4), is 99.34%.
DOI: 10.6084/m9.figshare.9927692.v1
title: The association between genetic polymorphism of glutathione peroxidase 1 (rs1050450) and keratoconus in a Turkish population

description: ABSTRACT Purpose: To investigate the potential associations between keratoconus and catalase rs1001179, superoxide dismutase 2 rs4880, and glutathione peroxidase 1 rs1050450 gene polymorphisms in a Turkish population. Methods: The study group included 121 unrelated keratoconus patients and 94 unrelated healthy controls. Blood samples (200 ml) were collected from all patients and controls to isolate genomic DNA. Genotyping was performed to identify rs1001179, rs4880, and rs1050450 using real-time polymerase chain reaction (PCR). Genotype and allele frequencies were calculated; their associations with keratoconus risk were assayed, and the association with keratoconus risk and demographic factors was examined. Results: Glutathione peroxidase 1 rs1050450 polymorphism was present in 41% cases compared with 29% controls (OR=1.66; 95% CI=1.11-2.50; p=0.014). No association was observed between catalase rs1001179 and SOD2 rs4880 polymorphisms and keratoconus (for all, p&gt;0.05). Conclusions: This study evaluated possible relationships between rs1050450, rs1001179, and rs4880 polymorphisms and keratoconus susceptibility. We found a possible association between glutathione peroxidase 1 rs1050450 polymorphism and an increased risk of keratoconus. However, the genotype and allele frequencies were identical in the catalase rs1001179 and superoxide dismutase 2 rs4880 polymorphisms. Further studies are needed to analyze the effect of such variations in identifying keratoconus susceptibility.
DOI: 10.6084/m9.figshare.9927671
title: PRODUCTION OF METHYL ESTERS BY ENZYMATIC HYDROESTERIFICATION OF CHICKEN FAT INDUSTRIAL RESIDUE

description: Abstract The feedstock cost can comprise more than 75% of the overall biodiesel cost, and then economic issues are the main limitations of biodiesel production. This research focused on the use of alternative feedstock and production processes. The production of fatty acid esters from residues becomes an interesting alternative route since it is possible to reduce the cost of the process. The present work aimed to produce methyl esters from the residual oil of the poultry industry, using a commercial soluble lipase Eversa Transform 2.0® (NS-40116). The effects of methanol (1.2 to 1.8 eqv), water (1 to 2 wt%) and enzyme (0.1 to 0.5 wt%) contents on reaction conversion were evaluated through a 2³ experimental design with three central points, at 45 ºC, 250 rpm for 16 and 24 h of reaction time. From the results, by using 0.3 wt% enzyme, 1.5 wt% water, and 1.5 eqv of methanol it was possible to reach the most effective esters conversion (90.61%).
DOI: 10.6084/m9.figshare.9927662
title: JOSÉ VERÍSSIMO, A BRAZILIAN CLASSIC: SCHOOL ANTHOLOGY AS LITERARY CANONIZATION AND TRAINING OF READERS

description: ABSTRACT This article analyzes the school anthology "José Veríssimo - Crítica", selection and critical study of Olívio Montenegro, edited by Editora Agir, in the collection "Nossos Clássicos" (1958) as a form of reception and selection of the literary studies of the extensive historical, educational, ethnographic and literary work of José Veríssimo. It is argued that this school anthology recorded the process of literary canonization of José Veríssimo as literary critic and, from this, produced the process of formation of readers by joining a key of reading on the work of José Veríssimo: the transformation into Brazilian classic in the consecration of the literary critic - contributing to a bibliographical silence about his studies dedicated to society and the nineteenth century Amazonian culture.
DOI: 10.6084/m9.figshare.9927671.v1
title: PRODUCTION OF METHYL ESTERS BY ENZYMATIC HYDROESTERIFICATION OF CHICKEN FAT INDUSTRIAL RESIDUE

description: Abstract The feedstock cost can comprise more than 75% of the overall biodiesel cost, and then economic issues are the main limitations of biodiesel production. This research focused on the use of alternative feedstock and production processes. The production of fatty acid esters from residues becomes an interesting alternative route since it is possible to reduce the cost of the process. The present work aimed to produce methyl esters from the residual oil of the poultry industry, using a commercial soluble lipase Eversa Transform 2.0® (NS-40116). The effects of methanol (1.2 to 1.8 eqv), water (1 to 2 wt%) and enzyme (0.1 to 0.5 wt%) contents on reaction conversion were evaluated through a 2³ experimental design with three central points, at 45 ºC, 250 rpm for 16 and 24 h of reaction time. From the results, by using 0.3 wt% enzyme, 1.5 wt% water, and 1.5 eqv of methanol it was possible to reach the most effective esters conversion (90.61%).
DOI: 10.6084/m9.figshare.9927656
title: Moisture sorption isotherms of sunflower seeds: Thermodynamic analysis

description: ABSTRACT The study of the thermodynamic properties provides the knowledge of the sorbent affinity by the water and the spontaneity of the sorption process, important to design drying equipment and to predict hygroscopic behavior during storage. This work aimed to determine and evaluate isotherms of hygroscopic equilibrium and thermodynamic properties for different equilibrium conditions (water contents and temperatures) in sunflower seeds, using the indirect static method. Sunflower seeds with initial water content of 0.164 (decimal, dry basis - d.b.) were used. Fifteen mathematical models were tested for hygroscopic equilibrium modeling, and the Smith model presented the best fit. It was verified that the thermodynamic properties were influenced by the water content, the integral isosteric desorption heat increased with the decrease of the equilibrium water content, ranging from 1.787 to 2.670 kJ kg-1 to 0.198 to 0.0518 (decimal, d.b.), respectively, the desorption process of the sunflower seeds was controlled by the enthalpy and the Gibbs free energy, which varied from 3.6363 to 200.1730 kJ kg-1, was positive for the temperatures studied, with increase to during the desorption process, proving to be a non-spontaneous process.
DOI: 10.6084/m9.figshare.9927662.v1
title: JOSÉ VERÍSSIMO, A BRAZILIAN CLASSIC: SCHOOL ANTHOLOGY AS LITERARY CANONIZATION AND TRAINING OF READERS

description: ABSTRACT This article analyzes the school anthology "José Veríssimo - Crítica", selection and critical study of Olívio Montenegro, edited by Editora Agir, in the collection "Nossos Clássicos" (1958) as a form of reception and selection of the literary studies of the extensive historical, educational, ethnographic and literary work of José Veríssimo. It is argued that this school anthology recorded the process of literary canonization of José Veríssimo as literary critic and, from this, produced the process of formation of readers by joining a key of reading on the work of José Veríssimo: the transformation into Brazilian classic in the consecration of the literary critic - contributing to a bibliographical silence about his studies dedicated to society and the nineteenth century Amazonian culture.
DOI: 10.6084/m9.figshare.9927653
title: CARBON DIOXIDE BIOFIXATION BY Chlorella sp. IN A BUBBLE COLUMN REACTOR AT DIFFERENT FLOW RATES AND CO2 CONCENTRATIONS

description: Abstract CO2 biofixation of the microalgae Chlorella sp. for different CO2 concentrations and gas flow rates in a bubble column reactor has been investigated in this study. Microalgae were cultivated under different CO2 concentrations (at 1.75% and 9.45% v/v) and gas flow rates (at 30, 50 and 70 ml/min). The maximum specific growth rate of Chlorella sp. was obtained for the CO2 concentration of 1.75 % and the gas flow rate of 50 mL/min. The highest biomass productivity rate (at 0.17 g L-1 day-1) was for a sample with 1.75 % CO2 at a flow rate of 70 ml/min. Moreover, the results have shown that the specific growth rate and CO2 biofixation have a direct relation with culturing of Chlorella sp. Also, limiting CO2 supplementation noticeably decreased biomass concentration. Therefore, the results have shown that a high flow rate and low concentration of CO2 might promote a decrease in CO2 fixation efficiency by Chlorella sp.
DOI: 10.6084/m9.figshare.9927650
title: Estimates of genetic parameters of pigments and agronomic traits in green and purple lettuce

description: ABSTRACT Understanding genetics and the gene interactions involved in the expression of certain characteristics becomes a determining factor for better exploration of its use. The development of breeding programs that combine one or more desirable trait into a single cultivar is directly impacted by this lack of knowledge of the genetic bases involved. The objective of the present study was to estimate the genetic parameters involved in pigment expression and agronomic characteristics in lettuce. Parental evaluations of lettuce, P1 (green) and P2 (purple) parental generations, the segregating generations F1 and F2, and the backcrosses Bc1 and Bc2 originating from the UFU-Crespa199#1#1 x UFU-Albina#2 crossing were evaluated. The chlorophyll and anthocyanin contents, number of leaves and plant diameter were evaluated. The study was conducted by testing all generations and the estimates obtained by averages and variances. Indications of polygenic or oligogenic inheritance were verified by the characteristic number of leaves, plant diameter, and anthocyanin content. The complete and additive-dominant models satisfactorily explained the performance of the variables, except the anthocyanin content.
DOI: 10.6084/m9.figshare.9927656.v1
title: Moisture sorption isotherms of sunflower seeds: Thermodynamic analysis

description: ABSTRACT The study of the thermodynamic properties provides the knowledge of the sorbent affinity by the water and the spontaneity of the sorption process, important to design drying equipment and to predict hygroscopic behavior during storage. This work aimed to determine and evaluate isotherms of hygroscopic equilibrium and thermodynamic properties for different equilibrium conditions (water contents and temperatures) in sunflower seeds, using the indirect static method. Sunflower seeds with initial water content of 0.164 (decimal, dry basis - d.b.) were used. Fifteen mathematical models were tested for hygroscopic equilibrium modeling, and the Smith model presented the best fit. It was verified that the thermodynamic properties were influenced by the water content, the integral isosteric desorption heat increased with the decrease of the equilibrium water content, ranging from 1.787 to 2.670 kJ kg-1 to 0.198 to 0.0518 (decimal, d.b.), respectively, the desorption process of the sunflower seeds was controlled by the enthalpy and the Gibbs free energy, which varied from 3.6363 to 200.1730 kJ kg-1, was positive for the temperatures studied, with increase to during the desorption process, proving to be a non-spontaneous process.
DOI: 10.6084/m9.figshare.9927641
title: Carioca bean genotypes for tolerance to grain darkening by natural and accelerated methods

description: ABSTRACT The slow darkening of grains is sought by bean breeders because the consumers consider that darker grains demand more time for cooking. The analysis currently used takes around 90 days to differentiate grain color among genotypes. The objective was to evaluate the color as a function of the value of L* (lightness) of carioca beans, by natural and accelerated methods to verify equivalence between methods, validation of the methodology and identification of genotypes tolerant to the darkening. The grain darkening was compared and evaluated by natural darkening method under shelf conditions, in days storage, and accelerated darkening method under ultraviolet light, in hours. The natural darkening time of 90 days was statistically equal to 24 hours of accelerated darkening, and the difference among the genotypes could be obtained in a shorter time, indicating a correspondence in the methods. The accelerated darkening method can be used to shorten the analysis time in the routine of breeding programs.