cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7677842.v1
title: Application of ISO 31000 standard on tailings dam safety

description: Abstract Tailings dam safety is a frequent subject of discussion during mining project development. However, due to recent accidents with these structures, this issue has become even more prominent. A highlighted point is the risk management, which can be defined as the identification, analysis and maintenance of risks at acceptable levels during the design, construction and operation phases. Therefore, this article aims to present the direct application of ISO 31000: Risk Management applied to the safety management of tailings dams. Although not widespread, this standard brings guidelines and principles for the safety management of dams that will contribute to manage the risks associated with these structures in a systematic and effective way.
DOI: 10.6084/m9.figshare.5645314
title: Quantifying the impacts of air conditioning on the thermal sensation of pedestrians in terms of changes in microclimate

description: Abstract The study analyzes the effects of air-conditioning (AC) usage on thermal sensation due to interferences in acclimatization in outdoor spaces, from field data in Rio de Janeiro. Field monitoring campaigns have been carried out in warm periods between 2012 and 2015, with microclimate monitoring and concurrent comfort surveys according to ISO 10551, to which questions on the use of AC were added. The thermal index employed for interpreting microclimatic data was UTCI (Universal Thermal Climate Index). Results showed that the frequent use of AC could have an impact on the thermal perception of passersby, thus confounding the definition of thermal comfort limits. A drop of 2°C was estimated in terms of UTCI units for the onset of heat thermal stress for the less acclimatized group (typical users of air-conditioned spaces), which suggests a reduction in thermal tolerance to heat in such population stratum. From results obtained and towards the development of the field area outdoor thermal comfort in Brazil (with mostly tropical climate conditions) it is recommended the introduction of questioning as regards time of residency in outdoor comfort surveys.
DOI: 10.6084/m9.figshare.7512299.v1
title: HPGR simulation from piston-die tests with an itabirite ore

description: Abstract The Minas Rio project, owned by Anglo American, has HPGRs in open circuit operated as a tertiary/quaternary crushing stage. Currently this type of equipment is designed from HPGR tests on laboratory scale and pilot scale tests. This paper presents a methodology for simulating HPGR from piston-die tests on laboratory scale and a mathematical model developed in Hacettepe University in Turkey. The parameters determined from the results of the piston-die tests were used to validate the HPGR testing on pilot scale. Finally, the model was used to predict the particle size distribution in the HPGR product on industrial scale.
DOI: 10.6084/m9.figshare.7514330.v1
title: Morphological and histomorphometric evaluation of autogenous bone graft resorption in rabbits treated with alendronate sodium

description: Abstract Introduction Different rates of resorption are mediated by osteoclasts that may be affected by bisphosphonates during bone graft repair. Bisphosphonates are drugs that act as inhibitors of bone resorption. Objective The aim of the present study was to evaluate the rate of resorption of skullcap grafts in rabbits with and without the use of alendronate sodium. Material and method Thirty two New Zealand rabbits were divided into two groups (control group and alendronate group) and divided again into four periods (7, 14, 30 and 60 days). The control group did not receive alendronate, while animals of the experimental group received 4 mg of alendronate sodium weekly after the surgery. An 8 mm diameter bone block was removed from the parietal bone and fixed by screws to the contralateral parietal bone. During the periods of 7, 14, 30 and 60 days, the animals had undergone euthanasia and samples were removed for further analysis. Morphological and histomorphometric tests were used to compare graft thicknesses and to evaluate the newly formed bone at the interface between the graft and receptor site. The Wilcoxon and Mann-Whitney tests were used for statistical analyses. Result All grafts healed and integrated uneventfully and no statistically significant differences in resorption rates or bone deposition were detected after the final incorporation of the graft in both groups. Conclusion Alendronate Sodium did not decrease the bone graft resorption rates, but there was a tendency for better results in the control group regarding the resorption and neoformation in autogenous calvarial bone grafts in rabbits.
DOI: 10.6084/m9.figshare.7514660
title: PRODUCTIVITY OF POTATO TUBERS "ATLANTIC" AS A FUNCTION OF ORGANOMINERAL FERTILIZER USE

description: ABSTRACT: The study evaluated potato tuber yield and quality, using cultivar Atlantic, as a function of organomineral fertilizer doses applied in the planting furrow. The experiments were done in Cristalina, Goiás, in winter and summer cultive. The experimental design was randomized blocks, with six doses in the winter experiment and seven doses in the summer one, both with four replications. The doses were fixed according to the recommendation for mineral fertilizer. The doses evaluated were 2800 kg ha-1 of formulation 3-32-6, 1629.10, 2443.60, 4072.70 and 4887.30 kg ha-1 of organomineral fertilizer, corresponding to 40, 60, 80, 100 and 120% of the mineral fertilizer dose. A treatment with no fertilizer (control) was included in the summer experiment. Fertilizers were applied in the planting furrow. Side dressing fertilization was done 30 DAP, in winter crop, with 300 kg ha-1 of formulation 20-00-20. Tubers were harvested, classified, weighed and yield (kg ha-1) was determined at the end of the experiment. Results of winter crop were greater than those of summer, for yield and tuber classification. Organomineral fertilizer, in the dose 4072.70 kg ha-1, representing 100% of the mineral one, increased the yield of tubers Class Special. Winter crop presented good results for soluble solids contents.
DOI: 10.6084/m9.figshare.7512299
title: HPGR simulation from piston-die tests with an itabirite ore

description: Abstract The Minas Rio project, owned by Anglo American, has HPGRs in open circuit operated as a tertiary/quaternary crushing stage. Currently this type of equipment is designed from HPGR tests on laboratory scale and pilot scale tests. This paper presents a methodology for simulating HPGR from piston-die tests on laboratory scale and a mathematical model developed in Hacettepe University in Turkey. The parameters determined from the results of the piston-die tests were used to validate the HPGR testing on pilot scale. Finally, the model was used to predict the particle size distribution in the HPGR product on industrial scale.
DOI: 10.6084/m9.figshare.7517243
title: Arsenic content of soils from three regions of Santa Catarina State

description: Abstract The determination of trace elements is necessary in order to monitor their entry into the soil system and to remediate contaminated areas. The purpose of this study was to determine the natural content of arsenic (As) in soils of three regions of Santa Catarina State (SC): the Southern Plateau, the Metropolitan area and the Southern Coast. Arsenic content was obtained after digestion in a microwave oven, following the USEPA 3051 A protocol and quantification was made by atomic absorption spectrometry with electrothermal atomization. The results were analyzed by the Scott-Knott test at a 5% significance level. Soil attributes that best correlated with arsenic content were clay, organic carbon, cation exchange capacity and Al and Fe oxides. The arsenic levels are related to the source material and the slope of regional soils.
DOI: 10.6084/m9.figshare.7512017
title: Blood parameters of grazing dairy cows supplemented with different protein sources

description: SUMMARY The present work aimed to evaluate the effect of supplementation with different protein sources in the diets for dairy cows kept on Brachiaria brizantha MG5 grass pasture on serum levels of the glucose, triglycerides, cholesterol and urea as well as on enzymes gama grutamil transferase, creatinine quinase and aminotransferase. We have evaluated the following protein sources: bean byproduct, soybean meal, sunflower meal and cottonseed meal. Eight crossbred cows (Holstein x Gir) were used, weighing 500±60.33 kg, average milk production of 14.85±3.28 kg/day, between the 60th and the 90th day of calving, by a simultaneous double 4 x 4 latin square design 4 x 4. Each experimental period lasted 15 days, of which the first 10 days were designed to animal adaptation and the final five days for data collection. There was an interaction effect (P&lt;0.05) among protein sources and sampling time on serum glucose. There was no effect (P&gt;0.05) of protein sources for the triglycerides, cholesterol and urea levels, averaging 6.46±2.05, 182.43±37.52 and 38.20±12.29 mg/dL, respectively. There was a significant effect (P&lt;0.05) of the sampling time on blood levels of triglycerides and urea. The different protein sources did not affect significantly (P&gt;0.05) serum enzyme levels of glutamine transferase, creatinine quinase and aminotransferase, averaging 26.76±8.02, 112.13±20.13 and 58.79±31.72 IU/L, respectively. The protein sources promoted changes on blood glucose with the sampling time, while sampling time altered triglycerides and urea levels. Changes to other blood metabolites were not observed.
DOI: 10.6084/m9.figshare.9739670
title: Prevalence of antithyroperoxidase antibodies in a multiethnic Brazilian population: The ELSA-Brasil Study

description: ABSTRACT Objective In this study, we aimed to describe the prevalence and distribution of positive antithyroperoxidase antibodies (TPOAb) according to sex, age strata, and presence of thyroid dysfunction using baseline data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Materials and methods Thyroid hormone tests were obtained from each study participant at baseline. Levels of thyroid-stimulating hormone (TSH) and free thyroxine (FT4) were measured using a third-generation immunoenzymatic assay. Antithyroperoxidase antibodies were measured by electrochemiluminescence and were considered to be positive when ≥ 34 IU/mL. Results The prevalence of TPOAb among 13,503 study participants was 12%. Of participants with positive TPOAb, 69% were women. Almost 60% of the individuals with positive TPOAb were white. The presence of positive TPOAb was associated with the entire spectrum of thyroid diseases among women, but only with overt hyperthyroidism and overt hypothyroidism in men. Conclusion The distribution of positive TPOAb across sex, race, age, and thyroid function in the ELSA-Brasil study is aligned with the worldwide prevalence of positive TPOAb reported in iodine-sufficient areas. In women, the presence of TPOAb was related to the entire spectrum of thyroid dysfunction, while in men, it was only related to the occurrence of overt thyroid disease.
DOI: 10.6084/m9.figshare.7512017.v1
title: Blood parameters of grazing dairy cows supplemented with different protein sources

description: SUMMARY The present work aimed to evaluate the effect of supplementation with different protein sources in the diets for dairy cows kept on Brachiaria brizantha MG5 grass pasture on serum levels of the glucose, triglycerides, cholesterol and urea as well as on enzymes gama grutamil transferase, creatinine quinase and aminotransferase. We have evaluated the following protein sources: bean byproduct, soybean meal, sunflower meal and cottonseed meal. Eight crossbred cows (Holstein x Gir) were used, weighing 500±60.33 kg, average milk production of 14.85±3.28 kg/day, between the 60th and the 90th day of calving, by a simultaneous double 4 x 4 latin square design 4 x 4. Each experimental period lasted 15 days, of which the first 10 days were designed to animal adaptation and the final five days for data collection. There was an interaction effect (P&lt;0.05) among protein sources and sampling time on serum glucose. There was no effect (P&gt;0.05) of protein sources for the triglycerides, cholesterol and urea levels, averaging 6.46±2.05, 182.43±37.52 and 38.20±12.29 mg/dL, respectively. There was a significant effect (P&lt;0.05) of the sampling time on blood levels of triglycerides and urea. The different protein sources did not affect significantly (P&gt;0.05) serum enzyme levels of glutamine transferase, creatinine quinase and aminotransferase, averaging 26.76±8.02, 112.13±20.13 and 58.79±31.72 IU/L, respectively. The protein sources promoted changes on blood glucose with the sampling time, while sampling time altered triglycerides and urea levels. Changes to other blood metabolites were not observed.
DOI: 10.6084/m9.figshare.7517243.v1
title: Arsenic content of soils from three regions of Santa Catarina State

description: Abstract The determination of trace elements is necessary in order to monitor their entry into the soil system and to remediate contaminated areas. The purpose of this study was to determine the natural content of arsenic (As) in soils of three regions of Santa Catarina State (SC): the Southern Plateau, the Metropolitan area and the Southern Coast. Arsenic content was obtained after digestion in a microwave oven, following the USEPA 3051 A protocol and quantification was made by atomic absorption spectrometry with electrothermal atomization. The results were analyzed by the Scott-Knott test at a 5% significance level. Soil attributes that best correlated with arsenic content were clay, organic carbon, cation exchange capacity and Al and Fe oxides. The arsenic levels are related to the source material and the slope of regional soils.
DOI: 10.6084/m9.figshare.7519235
title: Environmental diagnosis of hazardous household wastes and the family health strategy as liaison for implementation of a management program in the South of Brazil

description: AbstractDespite the serious threat to public health that it represents, hazardous household waste (HHW) is not perceived as dangerous by a majority of the population. Existing waste management systems contribute to this misperception, by underestimating the importance of these residues. This, in practice, reflects the lack of knowledge of citizens about the risks and about their responsibility. This study aimed to identify the major HHW generated and disposal practices of the population of São Luís District and know the HHW management situation of the municipality of Canoas, Brazil. We conducted a neighborhood survey, identifying the generation and destination of 15 types of HHW. The situation of the management of this waste was obtained through consultations with the City of Canoas, where we observed little effective action to correct mismanagement. With the aim of improving the current administration, this paper proposes the use of the Family Health Strategy as a liaison for implementation of an appropriate hazardous household waste management program. The role of Community Health Workers restates the important potential for the integration of environmental education and preventive action.
DOI: 10.6084/m9.figshare.7519235.v1
title: Environmental diagnosis of hazardous household wastes and the family health strategy as liaison for implementation of a management program in the South of Brazil

description: AbstractDespite the serious threat to public health that it represents, hazardous household waste (HHW) is not perceived as dangerous by a majority of the population. Existing waste management systems contribute to this misperception, by underestimating the importance of these residues. This, in practice, reflects the lack of knowledge of citizens about the risks and about their responsibility. This study aimed to identify the major HHW generated and disposal practices of the population of São Luís District and know the HHW management situation of the municipality of Canoas, Brazil. We conducted a neighborhood survey, identifying the generation and destination of 15 types of HHW. The situation of the management of this waste was obtained through consultations with the City of Canoas, where we observed little effective action to correct mismanagement. With the aim of improving the current administration, this paper proposes the use of the Family Health Strategy as a liaison for implementation of an appropriate hazardous household waste management program. The role of Community Health Workers restates the important potential for the integration of environmental education and preventive action.
DOI: 10.6084/m9.figshare.9739670.v1
title: Prevalence of antithyroperoxidase antibodies in a multiethnic Brazilian population: The ELSA-Brasil Study

description: ABSTRACT Objective In this study, we aimed to describe the prevalence and distribution of positive antithyroperoxidase antibodies (TPOAb) according to sex, age strata, and presence of thyroid dysfunction using baseline data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Materials and methods Thyroid hormone tests were obtained from each study participant at baseline. Levels of thyroid-stimulating hormone (TSH) and free thyroxine (FT4) were measured using a third-generation immunoenzymatic assay. Antithyroperoxidase antibodies were measured by electrochemiluminescence and were considered to be positive when ≥ 34 IU/mL. Results The prevalence of TPOAb among 13,503 study participants was 12%. Of participants with positive TPOAb, 69% were women. Almost 60% of the individuals with positive TPOAb were white. The presence of positive TPOAb was associated with the entire spectrum of thyroid diseases among women, but only with overt hyperthyroidism and overt hypothyroidism in men. Conclusion The distribution of positive TPOAb across sex, race, age, and thyroid function in the ELSA-Brasil study is aligned with the worldwide prevalence of positive TPOAb reported in iodine-sufficient areas. In women, the presence of TPOAb was related to the entire spectrum of thyroid dysfunction, while in men, it was only related to the occurrence of overt thyroid disease.
DOI: 10.6084/m9.figshare.7514258
title: Prevalence of the rs1801282 single nucleotide polymorphism of the PPARG gene in patients with metabolic syndrome

description: Objective This study aimed to get the genotypic and allelic frequencies of rs1801282 in 179 volunteer donors and 154 patients with Metabolic syndrome (MetS) in Brasilia, Brazil and also examine the association with anthropometric, biochemical and hemodynamic variables in the latter group. MetS comprises a group of diseases resulting from insulin resistance, in-creased risk of type 2 diabetes and atherosclerotic cardiovascular disease. MetS is defined by the presence of increased visceral fat, atherogenic dyslipidemia (elevated triglycerides (TGL)), with decreased high density lipoprotein (HDL) and increased low density lipoprotein (LDL) levels, hypertension (BPH) and disturbances in glucose homeostasis representing a significant burden across the world due to the alarming increase in the incidence over the last decades besides their significant morbidity and mortality. Peroxisome proliferator activated receptor-gamma (PPARg) has been mentioned as a candidate gene for determining the risk of MetS. It is a member of the nuclear receptors superfamily and a ligand-activated transcription factor, which regulates the expression of genes involved in the network lipogenesis and adipogenesis, insulin sensitivity, energy balance, inflammation, angiogenesis and atherosclerosis. Among the PPARG genetic variants, single nucleotide polymorphism rs1801282 has been the most extensively studied one since it was first described by Yen and cols. in 1997. This polymorphism is characterized by the replacement of a proline (CCC) to an alanine (GCA) at codon 12 of exon B, due to the exchange of a cytosine with a guanine. The Ala allele frequency varies in different ethnic groups.Materials and methods DNA was extracted using Chelex-100 method and determinations of genotypes were performed by allele-specific chain reaction.Results The distribution of genotype frequency of the MetS group was not statistically different from the frequency in the donor population at large. In the first group, genotype frequency was CC to 0.869 and 0.103 for CG, while allelic frequencies were 0.948 for C and 0.052 for G allele. In the group of donors, the genotype and allele frequencies were 0.882 for CC, 0.117 to CG; and 0.941 to 0.059 for G and C, respectively. GG genotype was not found in any of the two groups. The genotype distribution and allele frequencies were in Hardy-Weinberg equilibrium. No marker could be detected from the analysis of anthropometric, biochemical and hemodynamic variables in the MetS group.Conclusion Our data suggest that this polymorphism is not correlated with predisposition to MetS. The results obtained on a small sample of the population of Brasilia, corroborate the data reported in the literature on the prevalence of this polymorphism in PPAR in populations of different ethnic origins.
DOI: 10.6084/m9.figshare.7514258.v1
title: Prevalence of the rs1801282 single nucleotide polymorphism of the PPARG gene in patients with metabolic syndrome

description: Objective This study aimed to get the genotypic and allelic frequencies of rs1801282 in 179 volunteer donors and 154 patients with Metabolic syndrome (MetS) in Brasilia, Brazil and also examine the association with anthropometric, biochemical and hemodynamic variables in the latter group. MetS comprises a group of diseases resulting from insulin resistance, in-creased risk of type 2 diabetes and atherosclerotic cardiovascular disease. MetS is defined by the presence of increased visceral fat, atherogenic dyslipidemia (elevated triglycerides (TGL)), with decreased high density lipoprotein (HDL) and increased low density lipoprotein (LDL) levels, hypertension (BPH) and disturbances in glucose homeostasis representing a significant burden across the world due to the alarming increase in the incidence over the last decades besides their significant morbidity and mortality. Peroxisome proliferator activated receptor-gamma (PPARg) has been mentioned as a candidate gene for determining the risk of MetS. It is a member of the nuclear receptors superfamily and a ligand-activated transcription factor, which regulates the expression of genes involved in the network lipogenesis and adipogenesis, insulin sensitivity, energy balance, inflammation, angiogenesis and atherosclerosis. Among the PPARG genetic variants, single nucleotide polymorphism rs1801282 has been the most extensively studied one since it was first described by Yen and cols. in 1997. This polymorphism is characterized by the replacement of a proline (CCC) to an alanine (GCA) at codon 12 of exon B, due to the exchange of a cytosine with a guanine. The Ala allele frequency varies in different ethnic groups.Materials and methods DNA was extracted using Chelex-100 method and determinations of genotypes were performed by allele-specific chain reaction.Results The distribution of genotype frequency of the MetS group was not statistically different from the frequency in the donor population at large. In the first group, genotype frequency was CC to 0.869 and 0.103 for CG, while allelic frequencies were 0.948 for C and 0.052 for G allele. In the group of donors, the genotype and allele frequencies were 0.882 for CC, 0.117 to CG; and 0.941 to 0.059 for G and C, respectively. GG genotype was not found in any of the two groups. The genotype distribution and allele frequencies were in Hardy-Weinberg equilibrium. No marker could be detected from the analysis of anthropometric, biochemical and hemodynamic variables in the MetS group.Conclusion Our data suggest that this polymorphism is not correlated with predisposition to MetS. The results obtained on a small sample of the population of Brasilia, corroborate the data reported in the literature on the prevalence of this polymorphism in PPAR in populations of different ethnic origins.