cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5885617.v1
title: Growth Dynamics of Araucaria after Management Interventions in Natural Forest

description: ABSTRACT The objective of this study was to evaluate the effect of selective logging on the growth dynamics of Araucaria angustifolia in a natural forest of Rio Grande do Sul state, Brazil. Treatments were based on percentage reduction of the basal area per DBH class, namely, T0 (control) = 0%; T1 (light selective logging) = reduction of 20-30%; T2 (moderate selective logging) = reduction of 40-50%. Data were obtained prior to the management interventions and four, eight and 13 years after selective logging. Changes between treatments were assessed using the following parameters: absolute density, absolute dominance, importance value index, and growth rates. Results show that population reduction and canopy opening provided greater recruitment and higher growth rates for araucaria in the management treatments (T1 and T2) compared with those of the control treatment (T0). These results reinforce that management practices are necessary for the continuous development of araucaria in this forest formation.
DOI: 10.6084/m9.figshare.7512914
title: Analysis of urban solid waste costs determinants in Brazilian state capitals

description: Abstract This article aims to analyze and discuss factors that directly influence the per capita cost of urban solid waste in the Brazilian capitals. Information was collected on the costs of solid waste and specified a multivariate econometric model to understand its determinants. It was concluded that the waste costs depend on the management method elected (existence of selective collection), but are strongly influenced by the municipality management. Contrary to what the neoclassical microeconomic literature says, in the case of solid waste, in Brazilians capitals, the existence of the private sector in the service operation tends to bring increased pressure from higher services costs offered when operated by the government or mixed form.
DOI: 10.6084/m9.figshare.5862318
title: Thyroid disorders in obese patients. Does insulin resistance make a difference?

description: ABSTRACT Objective: The aim of this study was to evaluate the association between insulin resistance and thyroid pathology in obese patients, and compare the results between insulin-resistant and noninsulin-resistant patients. Subjects and methods: Obese/nondiabetic patients, aged 18-70 years, attending the outpatient endocrinology service for 2 years were consecutively included. We evaluated the patients' fasting plasma glucose, insulin, homeostasis model assessment of insulin resistance index (HOMA-IR), thyroid-stimulating hormone (TSH), free thyroxine (FT4), antithyroperoxidase antibodies (TPO-Ab), antithyroglobulin antibodies (Tg-Ab), and thyroid ultrasound. Results: We included 82 patients with a mean age 44.21 ± 12.67 years. The thyroid disorders encountered and their prevalences were: hypothyroidism (14.6%, 95% confidence interval [CI] 8.6-23.8%), hyperthyroidism (1.2%, 95% CI 2.0-6.6%), goiter (28.0%, 95% CI 19.5-3.6%), thyroid nodules (35.4%, 95% CI 25.9-46.2%), and Hashimoto's thyroiditis (32.9%, 95% CI 23.7-43.7%). HOMA-IR correlated positively with TSH levels (r = 0.24, p = 0.028), and this correlation remained after adjustment for body mass index (BMI), waist/hip ratio (WHR), serum cortisol, subcutaneous fat thickness (SFT), visceral fat thickness (VFT), triglycerides, γ-glutamyl transpeptidase (GGT), and alanine aminotransferase (ALT) in multivariate regression analysis (b = 0.207, 95% CI, 0.09-0.385, p = 0.023). TSH levels were significantly higher in patients with HOMA-IR ≥ 2.5 than in those with HOMA-IR &lt; 2.5 (2.03 μIU/mL, interquartile range [IQR] 1.59-2.69 μIU/mL) versus 1.59 μIU/mL, IQR 0.94-2.26 μIU/mL, p = 0.023). Conclusions: The most prevalent thyroid disorder in patients attending our endocrinology clinic for investigation of obesity was thyroid nodules. One in seven patients had hypothyroidism. Our findings suggest that TSH levels correlate with insulin resistance in obese patients.
DOI: 10.6084/m9.figshare.9871178
title: Evaluation of hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent

description: Abstract The use of biosurfactants as reagents represents a promising alternative to the conventional surfactants used in the mineral industry because they may present low toxicity and high biodegradability. Therefore, this research studied the hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent. The flotation kinetics of both minerals were evaluated under established conditions: biosurfactant concentration of 10 mg/L and solution pH of 3. The maximum floatability values were of 99.98% and 17.53% for hematite and quartz, respectively, after 2 minutes of flotation. Finally, the kinetics study indicated that the experimental data of hematite floatability was better fitted to both the first and non-integral order kinetics, while the experimental data of quartz floatability was better fitted to the non-integral order kinetic.
DOI: 10.6084/m9.figshare.14272639.v1
title: Conceptions of economic development and the understanding of the role of tourism in poverty reduction

description: Abstract This paper aims to highlight the context that made possible the formation of a view that assigns to tourism the ability to reduce poverty, widely used by major multilateral international development agencies (World Bank, ILO, UNWTO, UN-UNDP). To this end, this research sought answers in understanding economic development through two main analytical lines of thought: the neoliberal current and its counterpoint, the "critical" current of development. Using the main features of both perspectives, we attempted to discuss the contribution of each line of thought to understand positive and negative aspects of the current that associates tourism with the ability to fight poverty. At the same time, it was briefly presented how each agency understands poverty, its causes, and the role of tourism in reducing it. The objective of the research was therefore to confer critical content on the subject and raise discussions in a current scenario of great relevance to the epistemological and empirical field of tourism.
DOI: 10.6084/m9.figshare.5863482
title: Change in leukocyte by acute toxicological stress of diesel oil in juveniles of Nile tilapia

description: ABSTRACT: This study aimed to evaluate the stress and changes in white blood cell count of juveniles Oreochromis niloticus subjected to acute toxicity of diesel oil. The toxicity was evaluated in a completely randomized design with five dilutions (20, 25, 30, 35 and 40%) and one control, both with three replicates. For the assessment of blood glucose levels and changes in white blood cell count, blood was drawn by caudal puncture of the dying fish. It was concluded that diesel oil can present risks to aquatic ecosystem, causing toxicity and physiological changes to fish.
DOI: 10.6084/m9.figshare.9871178.v1
title: Evaluation of hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent

description: Abstract The use of biosurfactants as reagents represents a promising alternative to the conventional surfactants used in the mineral industry because they may present low toxicity and high biodegradability. Therefore, this research studied the hematite and quartz flotation kinetics using surfactant produced by Rhodococcus erythropolis as bioreagent. The flotation kinetics of both minerals were evaluated under established conditions: biosurfactant concentration of 10 mg/L and solution pH of 3. The maximum floatability values were of 99.98% and 17.53% for hematite and quartz, respectively, after 2 minutes of flotation. Finally, the kinetics study indicated that the experimental data of hematite floatability was better fitted to both the first and non-integral order kinetics, while the experimental data of quartz floatability was better fitted to the non-integral order kinetic.
DOI: 10.6084/m9.figshare.5862318.v1
title: Thyroid disorders in obese patients. Does insulin resistance make a difference?

description: ABSTRACT Objective: The aim of this study was to evaluate the association between insulin resistance and thyroid pathology in obese patients, and compare the results between insulin-resistant and noninsulin-resistant patients. Subjects and methods: Obese/nondiabetic patients, aged 18-70 years, attending the outpatient endocrinology service for 2 years were consecutively included. We evaluated the patients' fasting plasma glucose, insulin, homeostasis model assessment of insulin resistance index (HOMA-IR), thyroid-stimulating hormone (TSH), free thyroxine (FT4), antithyroperoxidase antibodies (TPO-Ab), antithyroglobulin antibodies (Tg-Ab), and thyroid ultrasound. Results: We included 82 patients with a mean age 44.21 ± 12.67 years. The thyroid disorders encountered and their prevalences were: hypothyroidism (14.6%, 95% confidence interval [CI] 8.6-23.8%), hyperthyroidism (1.2%, 95% CI 2.0-6.6%), goiter (28.0%, 95% CI 19.5-3.6%), thyroid nodules (35.4%, 95% CI 25.9-46.2%), and Hashimoto's thyroiditis (32.9%, 95% CI 23.7-43.7%). HOMA-IR correlated positively with TSH levels (r = 0.24, p = 0.028), and this correlation remained after adjustment for body mass index (BMI), waist/hip ratio (WHR), serum cortisol, subcutaneous fat thickness (SFT), visceral fat thickness (VFT), triglycerides, γ-glutamyl transpeptidase (GGT), and alanine aminotransferase (ALT) in multivariate regression analysis (b = 0.207, 95% CI, 0.09-0.385, p = 0.023). TSH levels were significantly higher in patients with HOMA-IR ≥ 2.5 than in those with HOMA-IR &lt; 2.5 (2.03 μIU/mL, interquartile range [IQR] 1.59-2.69 μIU/mL) versus 1.59 μIU/mL, IQR 0.94-2.26 μIU/mL, p = 0.023). Conclusions: The most prevalent thyroid disorder in patients attending our endocrinology clinic for investigation of obesity was thyroid nodules. One in seven patients had hypothyroidism. Our findings suggest that TSH levels correlate with insulin resistance in obese patients.
DOI: 10.6084/m9.figshare.5863482.v1
title: Change in leukocyte by acute toxicological stress of diesel oil in juveniles of Nile tilapia

description: ABSTRACT: This study aimed to evaluate the stress and changes in white blood cell count of juveniles Oreochromis niloticus subjected to acute toxicity of diesel oil. The toxicity was evaluated in a completely randomized design with five dilutions (20, 25, 30, 35 and 40%) and one control, both with three replicates. For the assessment of blood glucose levels and changes in white blood cell count, blood was drawn by caudal puncture of the dying fish. It was concluded that diesel oil can present risks to aquatic ecosystem, causing toxicity and physiological changes to fish.
DOI: 10.6084/m9.figshare.7942394.v1
title: Adjustments in the tetrazolium test methodology for assessing the physiological quality of chickpea seeds

description: Abstract: Quick tests are essential tools to evaluate seed quality. The objective of this study was to adapt the methodology of tetrazolium test, by identifying the most suitable pre-conditioning parameters of imbibition temperature and duration, and tetrazolium solution concentrations, in order to assess the physiological quality of chickpea seeds. Also, this work proposed the separation of lots in classes, according to the viability and vigor of the seeds. Three lots of chickpeas (lot 1 - BRS Aleppo C1, lot 2 - BRS Aleppo basic, and lot 3 - Cicero) were evaluated. They were analyzed according to three combinations of imbibition temperature and duration (41 °C for 4 hours, 41 ºC for 6 hours, and 30 ºC for 18 hours) and two tetrazolium concentrations (0.1% and 0.5%). The imbibition at 41 °C for 4 or 6 hours, and at 30 ºC for 18 hours allowed clear visualization of injuries in the seeds after immersion in 0.1% tetrazolium solution. The intense coloration formed by the 0.5% solution of this salt prevented the differentiation of the types of damage. In addition, it was possible to separate the seeds into four classes: class I (viable and vigorous, without damages), class II (viable and vigorous, with superficial injuries), class III (viable and non-vigorous), and class IV (non-viable).
DOI: 10.6084/m9.figshare.14270791
title: Evaluative study of the working process of Primary Care Teams from PMAQ-AB

description: The study aimed to analyze the organization of the working process of the Primary Care Teams of the health regions of the state of Rio de Janeiro, from the results of the first PMAQ-AB external evaluation cycle. They were considered for analysis four sub-dimensions of the module II, collated with the characteristics of the working process of the National Policy of Primary Care. It was observed that the external evaluation process stimulated the planning of the action teams, yet that are still obstacles both for management as for the teams on the use of health information, the precariousness of human resources, and the evaluation of institutionalization itself.
DOI: 10.6084/m9.figshare.14270791.v1
title: Evaluative study of the working process of Primary Care Teams from PMAQ-AB

description: The study aimed to analyze the organization of the working process of the Primary Care Teams of the health regions of the state of Rio de Janeiro, from the results of the first PMAQ-AB external evaluation cycle. They were considered for analysis four sub-dimensions of the module II, collated with the characteristics of the working process of the National Policy of Primary Care. It was observed that the external evaluation process stimulated the planning of the action teams, yet that are still obstacles both for management as for the teams on the use of health information, the precariousness of human resources, and the evaluation of institutionalization itself.
DOI: 10.6084/m9.figshare.7511825
title: Mineral chemistry and geothermobarometry of the Serra da Água Limpa Batholith, Socorro-Guaxupé Nappe, Southern Brasília Belt, Southeast Brazil

description: The Serra da Água Limpa Batholith, that crops out along the boundary of Minas Gerais and São Paulo states, in Brazil, has been interpreted as part of a magmatic arc of the Paranapanema paleocontinent active margin, southern Brasília belt. Locally igneous features are preserved, but tectonic foliation is common. Mineral chemistry microprobe data are presented for plagioclase, amphibole, biotite and K-feldspar. Crystallization temperatures were calculated by the whole rock zircon saturation method, yielding values between 863 and 1015ºC. The pressure was calculated resulting in values in the range from 5 to 6 kbar. Thermometric data yielded two distinct temperature intervals: the cores of minerals rendered temperatures between 830 - 860ºC, and the rims from 740 - 770ºC. Three hypotheses may be considered: (A) the higher values obtained in the cores are related to magmatic crystallization, whereas the lower ones obtained in the rims represent metamorphism related to continental collision; (B) both cores and rims are metamorphic revealing a metamorphic peak temperature of 830 - 860ºC with retrometamorphism in the range 740 - 770ºC; (C) cores and rims of amphibole and plagioclase crystals retained their igneous composition and reflect igneous crystallization and subsequent cooling of the magma. The first interpretation seems to be the most likely because it is consistent with other data published for the region.
DOI: 10.6084/m9.figshare.7511825.v1
title: Mineral chemistry and geothermobarometry of the Serra da Água Limpa Batholith, Socorro-Guaxupé Nappe, Southern Brasília Belt, Southeast Brazil

description: The Serra da Água Limpa Batholith, that crops out along the boundary of Minas Gerais and São Paulo states, in Brazil, has been interpreted as part of a magmatic arc of the Paranapanema paleocontinent active margin, southern Brasília belt. Locally igneous features are preserved, but tectonic foliation is common. Mineral chemistry microprobe data are presented for plagioclase, amphibole, biotite and K-feldspar. Crystallization temperatures were calculated by the whole rock zircon saturation method, yielding values between 863 and 1015ºC. The pressure was calculated resulting in values in the range from 5 to 6 kbar. Thermometric data yielded two distinct temperature intervals: the cores of minerals rendered temperatures between 830 - 860ºC, and the rims from 740 - 770ºC. Three hypotheses may be considered: (A) the higher values obtained in the cores are related to magmatic crystallization, whereas the lower ones obtained in the rims represent metamorphism related to continental collision; (B) both cores and rims are metamorphic revealing a metamorphic peak temperature of 830 - 860ºC with retrometamorphism in the range 740 - 770ºC; (C) cores and rims of amphibole and plagioclase crystals retained their igneous composition and reflect igneous crystallization and subsequent cooling of the magma. The first interpretation seems to be the most likely because it is consistent with other data published for the region.
DOI: 10.6084/m9.figshare.7516910
title: Effect of Solid-State Laser Parameters on the Surface's Topography Formation During Texturization of Hard Metal Cutting Tools

description: ABSTRACT: The objective of this paper is to analyze the influence of specific laser system parameters on the microstructure of the ring formation process on the hard metal tool's surface. The parameters analyzed were: working distance, incident beam power and tool surface treatment, flank and rake. The microstructures were analyzed with regard to its diameter and depth by an optical 3-D surface metrology instrument. The analyses were made by comparing the ring's process formation with the dimples' process formation, a well-known process called ablation. The results show that the ring's diameter is increased by increasing incident beam power or the distance of the laser beam's focus for both surfaces. In addition, increasing the working distance decreases the ring's depth for both surfaces.
DOI: 10.6084/m9.figshare.7942394
title: Adjustments in the tetrazolium test methodology for assessing the physiological quality of chickpea seeds

description: Abstract: Quick tests are essential tools to evaluate seed quality. The objective of this study was to adapt the methodology of tetrazolium test, by identifying the most suitable pre-conditioning parameters of imbibition temperature and duration, and tetrazolium solution concentrations, in order to assess the physiological quality of chickpea seeds. Also, this work proposed the separation of lots in classes, according to the viability and vigor of the seeds. Three lots of chickpeas (lot 1 - BRS Aleppo C1, lot 2 - BRS Aleppo basic, and lot 3 - Cicero) were evaluated. They were analyzed according to three combinations of imbibition temperature and duration (41 °C for 4 hours, 41 ºC for 6 hours, and 30 ºC for 18 hours) and two tetrazolium concentrations (0.1% and 0.5%). The imbibition at 41 °C for 4 or 6 hours, and at 30 ºC for 18 hours allowed clear visualization of injuries in the seeds after immersion in 0.1% tetrazolium solution. The intense coloration formed by the 0.5% solution of this salt prevented the differentiation of the types of damage. In addition, it was possible to separate the seeds into four classes: class I (viable and vigorous, without damages), class II (viable and vigorous, with superficial injuries), class III (viable and non-vigorous), and class IV (non-viable).
DOI: 10.6084/m9.figshare.11452428
title: Analysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques

description: Abstract The traditionally and widely used Lerchs-Grossmann algorithm presents well-known limitations that newer propositions attempt to overcome. The direct block schedule (DBS) methodology, which has gained relevance with computational advances, obtains the final pit as a natural result of production sequencing, different from Lerchs-Grossmann-based algorithms. This process flow applies constraints in the final pit definition stage attempting to provide a more realistic result and to minimize risks. Slope instability is a common and inherent risk to open pit mining and may affect the project's net present value (NPV). A study of the impacts of slope angle variations on safety indexes and final pit NPV provides an auxiliary tool for the overall slope angle definition process. This article presents a case study in which the effects of variations of the overall slope angle on the safety factor (SF) and project NPV were analyzed. A total of 25 pits were generated by each studied final pit definition methodology, and each pit had the sections with the varied slope angles analyzed in the stability assessment, resulting in a total of 150 slopes analyzed. A comparison between the results obtained by the two different methodologies implemented in commercial software is presented. The results show no relationship between the NPV and the overall slope angle using the DBS methodology. An analysis of the results for each geotechnical sector obtained by the traditional methodology was conducted and may contribute to the trade-off analysis between the best slope angle to achieve a reasonable SF and the maximum NPV.
DOI: 10.6084/m9.figshare.11965917
title: CO-TRANSLATING VELIMIR KHLEBNIKOV’S RUSSIAN TRANSRATIONAL POETRY

description: Abstract This paper aims to analyze the translations of zaum poems by the Russian Cubo-futurist poet Velimir Khlebnikov. One of the most influential Russian poets of the first half of the twentieth century, Khlebnikov resorted to and developed across his work a number of experiments with the innovative language found in several manifestos of the Russian avant-garde. The zaum – or transrational – language was first translated and published in the 1968 anthology of poems, Modern Russian Poetry. The re-translation is regarded in this paper as a dialogic process, which we view as a co-translation, by making use of and re-elaborating the material once translated by Augusto and Haroldo de Campos and Boris Schnaiderman to the Portuguese language.
DOI: 10.6084/m9.figshare.11452428.v1
title: Analysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques

description: Abstract The traditionally and widely used Lerchs-Grossmann algorithm presents well-known limitations that newer propositions attempt to overcome. The direct block schedule (DBS) methodology, which has gained relevance with computational advances, obtains the final pit as a natural result of production sequencing, different from Lerchs-Grossmann-based algorithms. This process flow applies constraints in the final pit definition stage attempting to provide a more realistic result and to minimize risks. Slope instability is a common and inherent risk to open pit mining and may affect the project's net present value (NPV). A study of the impacts of slope angle variations on safety indexes and final pit NPV provides an auxiliary tool for the overall slope angle definition process. This article presents a case study in which the effects of variations of the overall slope angle on the safety factor (SF) and project NPV were analyzed. A total of 25 pits were generated by each studied final pit definition methodology, and each pit had the sections with the varied slope angles analyzed in the stability assessment, resulting in a total of 150 slopes analyzed. A comparison between the results obtained by the two different methodologies implemented in commercial software is presented. The results show no relationship between the NPV and the overall slope angle using the DBS methodology. An analysis of the results for each geotechnical sector obtained by the traditional methodology was conducted and may contribute to the trade-off analysis between the best slope angle to achieve a reasonable SF and the maximum NPV.