cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5668519
title: Effectiveness acidic pre-cleaning for copper-gold ore

description: Abstract The presence of copper-bearing minerals is known to bring on many challenges during the cyanidation of gold ore, like high consumption of cyanide and low extraction of metal, which are undesirable impacts on the auriferous recovery in the subsequent process step. The high copper solubility in cyanide prevents the direct use of classical hydrometallurgical processes for the extraction of gold by cyanidation. Additionally, the application of a conventional flotation process to extract copper is further complicated when it is oxidized. As a result, an acid pre-leaching process was applied in order to clean the ore of these copper minerals that are cyanide consumers. The objective was to evaluate the amount of soluble copper in cyanide before and after acidic cleaning. From a gold ore containing copper, the study selected four samples containing 0.22%, 0.55%, 1.00% and 1.36% of copper. For direct cyanidation of the ore without pre-treatment, copper extraction by cyanide complexing ranged from 8 to 83%. In contrast, the pre-treatment carried out with sulfuric acid extracted 24% to 99% of initial copper and subsequent cyanidation extracted 0.13 to 1.54% of initial copper. The study also showed that the copper contained in the secondary minerals is more easily extracted by cyanide (83%), being followed by the copper oxy-hydroxide minerals (60%), while the copper contained in the manganese oxide is less complexed by cyanide (8% a 12%). It was possible to observe that minerals with low acid solubility also have low solubility in cyanide. Cyanide consumption decreased by about 2.5 times and gold recovery increased to above 94% after acidic pre-cleaning.
DOI: 10.6084/m9.figshare.5668519.v1
title: Effectiveness acidic pre-cleaning for copper-gold ore

description: Abstract The presence of copper-bearing minerals is known to bring on many challenges during the cyanidation of gold ore, like high consumption of cyanide and low extraction of metal, which are undesirable impacts on the auriferous recovery in the subsequent process step. The high copper solubility in cyanide prevents the direct use of classical hydrometallurgical processes for the extraction of gold by cyanidation. Additionally, the application of a conventional flotation process to extract copper is further complicated when it is oxidized. As a result, an acid pre-leaching process was applied in order to clean the ore of these copper minerals that are cyanide consumers. The objective was to evaluate the amount of soluble copper in cyanide before and after acidic cleaning. From a gold ore containing copper, the study selected four samples containing 0.22%, 0.55%, 1.00% and 1.36% of copper. For direct cyanidation of the ore without pre-treatment, copper extraction by cyanide complexing ranged from 8 to 83%. In contrast, the pre-treatment carried out with sulfuric acid extracted 24% to 99% of initial copper and subsequent cyanidation extracted 0.13 to 1.54% of initial copper. The study also showed that the copper contained in the secondary minerals is more easily extracted by cyanide (83%), being followed by the copper oxy-hydroxide minerals (60%), while the copper contained in the manganese oxide is less complexed by cyanide (8% a 12%). It was possible to observe that minerals with low acid solubility also have low solubility in cyanide. Cyanide consumption decreased by about 2.5 times and gold recovery increased to above 94% after acidic pre-cleaning.
DOI: 10.6084/m9.figshare.7508417
title: Scientometrics: Haity Moussatché's scientific production

description: This is an exploratory study about an episode which came to be known as "Manguinhos massacre", when ten leading researchers had their political rights suspended. From the viewpoint of the scientific production of the Laboratory of Physiology at the Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, between 1934-1998, we focused on the scientific production of Haity Moussatche, laboratory chief until 1965. We mapped and analyzed the scientific production retrieved through searches in international databases and from the documentary research conducted at the Casa de Oswaldo Cruz and Library of Biomedical Sciences of Fiocruz, in order to collect evidence of the consequences of the political event on the scientific production of the laboratory. An important feature of the scientific production of the researcher points to a consistent pattern of co-authored publication since the beginning of his academic career. Possibly, this was the main factor which allowed him to remain active in his research even after he had been persecuted and exiled from Brazil. This work contributes to the understanding of the scientific history in the field of health, providing new interpretations of this episode in several academic fields.
DOI: 10.6084/m9.figshare.7508417.v1
title: Scientometrics: Haity Moussatché's scientific production

description: This is an exploratory study about an episode which came to be known as "Manguinhos massacre", when ten leading researchers had their political rights suspended. From the viewpoint of the scientific production of the Laboratory of Physiology at the Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, between 1934-1998, we focused on the scientific production of Haity Moussatche, laboratory chief until 1965. We mapped and analyzed the scientific production retrieved through searches in international databases and from the documentary research conducted at the Casa de Oswaldo Cruz and Library of Biomedical Sciences of Fiocruz, in order to collect evidence of the consequences of the political event on the scientific production of the laboratory. An important feature of the scientific production of the researcher points to a consistent pattern of co-authored publication since the beginning of his academic career. Possibly, this was the main factor which allowed him to remain active in his research even after he had been persecuted and exiled from Brazil. This work contributes to the understanding of the scientific history in the field of health, providing new interpretations of this episode in several academic fields.
DOI: 10.6084/m9.figshare.7516091
title: IMAGES OF PRESENTS/GHOSTS OF THE PAST

description: The representation of subjects in the Americas has always generated points of convergences, or divergences. To represent Indians, slaves or employees was an ethnographic decision that ultimately helped compose a particular characterization of a specific place. In this paper, I present a selection from three photographers-Marc Ferrez, Christiano Junior and Martín Chambi-whose contributions helped shape a personal / particular view of certain regions of Latin America. In a second moment, I confront these photographs with the works of contemporary Ecuadorian photographer Lucia Chiriboga, who incorporates antique photographs and documents in her art, in a direct dialogue with the past.
DOI: 10.6084/m9.figshare.7519007
title: THE PORTO PRIMAVERA DAM AND THE FLUVIAL TRANSPORT ON THE PORTO SÃO JOSÉ SECTION, PARANA RIVER

description: Abstract The Porto Primavera Dam caused the decrease of the concentration of suspended load and reduction of the size of the bed forms of Paraná River, but the effects of the construction on fluvial transport have not yet been quantified. In order to do that, this paper aims to evaluate the influence of the dam on the sediment transport in the section of Porto São José. Thus, data of Porto São José Fluviometric Station, field and orbital images information available in literature were used. The data were analyzed by linear regression to obtain significant correlation between sediment transport and river discharge. The equations with significant coefficient of determination were used to estimate the annual average transport for different time periods. The suspended transport before construction was 214.1 kg/s, increased to 222.2 kg/s during construction and decreased to 56.4 kg/s after completion of the dam. The bed load transport was 99.7 kg/s during the construction, decreased to 86.2 kg/s during 1999 and 2000 and to 41.2 kg/s after 2001. In the same period the total transport decreased from 321.9 kg/s to 177.8 and finally to 91.2 kg/s. These results indicated that the Porto Primavera Dam reduced 74.6% of the suspended transport, 58.7% of the bed load transport, 71.7% of the total transport and increased the proportion of the bed load of 33, 9% to 44.5% of total.
DOI: 10.6084/m9.figshare.7519007.v1
title: THE PORTO PRIMAVERA DAM AND THE FLUVIAL TRANSPORT ON THE PORTO SÃO JOSÉ SECTION, PARANA RIVER

description: Abstract The Porto Primavera Dam caused the decrease of the concentration of suspended load and reduction of the size of the bed forms of Paraná River, but the effects of the construction on fluvial transport have not yet been quantified. In order to do that, this paper aims to evaluate the influence of the dam on the sediment transport in the section of Porto São José. Thus, data of Porto São José Fluviometric Station, field and orbital images information available in literature were used. The data were analyzed by linear regression to obtain significant correlation between sediment transport and river discharge. The equations with significant coefficient of determination were used to estimate the annual average transport for different time periods. The suspended transport before construction was 214.1 kg/s, increased to 222.2 kg/s during construction and decreased to 56.4 kg/s after completion of the dam. The bed load transport was 99.7 kg/s during the construction, decreased to 86.2 kg/s during 1999 and 2000 and to 41.2 kg/s after 2001. In the same period the total transport decreased from 321.9 kg/s to 177.8 and finally to 91.2 kg/s. These results indicated that the Porto Primavera Dam reduced 74.6% of the suspended transport, 58.7% of the bed load transport, 71.7% of the total transport and increased the proportion of the bed load of 33, 9% to 44.5% of total.
DOI: 10.6084/m9.figshare.7516091.v1
title: IMAGES OF PRESENTS/GHOSTS OF THE PAST

description: The representation of subjects in the Americas has always generated points of convergences, or divergences. To represent Indians, slaves or employees was an ethnographic decision that ultimately helped compose a particular characterization of a specific place. In this paper, I present a selection from three photographers-Marc Ferrez, Christiano Junior and Martín Chambi-whose contributions helped shape a personal / particular view of certain regions of Latin America. In a second moment, I confront these photographs with the works of contemporary Ecuadorian photographer Lucia Chiriboga, who incorporates antique photographs and documents in her art, in a direct dialogue with the past.
DOI: 10.6084/m9.figshare.7216118
title: Trinexapac-ethyl and topdressing nitrogen levels on the productivity and physiological quality of graniferous white oat seeds

description: Abstract: The aim of this study was to evaluate the physiological quality of white oat seeds cultivated under different topdressing N levels combined with the plant growth retardant trinexapac-ethyl in two growing environments. The experiments were carried out in Londrina and Mauá da Serra Municipalities (PR, Brazil) with the cultivar ‘IPR Afrodite’. The experimental design was in randomized blocks, in a 4x2 factorial arrangement, with four replications. Treatments consisted of four N levels (0, 30, 60, and 90 kg.ha-1) combined or not with the plant growth retardant. Seed yield, 1000-seed weight, germination, first germination count, seedling length, seedling dry matter, accelerated aging, electrical conductivity, emergence speed index, and seedling emergence in sand were evaluated. Data were submitted to the analysis of variance and then to the F test and regression analysis up to the second degree (p≤0.05). The application of the plant growth retardant and N topdressing led to an increase in seed productivity in Mauá da Serra. N fertilization reduced seed quality, but this effect can be minimized, not observed or overlapped by the positive effect of the plant growth retardant. Such an effect depends on environmental characteristics and it was not observed in Londrina.
DOI: 10.6084/m9.figshare.7216118.v1
title: Trinexapac-ethyl and topdressing nitrogen levels on the productivity and physiological quality of graniferous white oat seeds

description: Abstract: The aim of this study was to evaluate the physiological quality of white oat seeds cultivated under different topdressing N levels combined with the plant growth retardant trinexapac-ethyl in two growing environments. The experiments were carried out in Londrina and Mauá da Serra Municipalities (PR, Brazil) with the cultivar ‘IPR Afrodite’. The experimental design was in randomized blocks, in a 4x2 factorial arrangement, with four replications. Treatments consisted of four N levels (0, 30, 60, and 90 kg.ha-1) combined or not with the plant growth retardant. Seed yield, 1000-seed weight, germination, first germination count, seedling length, seedling dry matter, accelerated aging, electrical conductivity, emergence speed index, and seedling emergence in sand were evaluated. Data were submitted to the analysis of variance and then to the F test and regression analysis up to the second degree (p≤0.05). The application of the plant growth retardant and N topdressing led to an increase in seed productivity in Mauá da Serra. N fertilization reduced seed quality, but this effect can be minimized, not observed or overlapped by the positive effect of the plant growth retardant. Such an effect depends on environmental characteristics and it was not observed in Londrina.
DOI: 10.6084/m9.figshare.7973924
title: Poultry Litter for the Production and Quality of Enterolobium contortisiliquum Vell. Seedlings

description: ABSTRACT The objective of this work was to determine the efficiency of poultry litter ratios added to the commercial substrate and to peat in the growth and quality of Enterolobium contortisiliquum seedlings. The design was completely randomized, with 10 replications, in a 2 × 5 factorial arrangement with two substrates (peat and commercial substrate) and five poultry litter ratios, added (v:v) to both substrates (0, 25%, 50%, 75% and 100%). The height, stem diameter, dry matter of shoot and roots, root specific surface area, Dickson quality index and NPK accumulated in dry matter of shoot and roots were evaluated. Poultry litter can be added up to a 35% ratio to the commercial substrate or to peat for the production of Enterolobium contortisiliquum seedlings; proportions above this, for both substrates, compromise the production. The treatments with peat provided lower growth and quality of Enterolobium contortisiliquum seedlings, compared to the commercial substrate.
DOI: 10.6084/m9.figshare.14270115.v1
title: Perception by professionals on the relevance of the oral health indicators in a metropolis of the Brazilian northeastern

description: Exploratory-descriptive study, with qualitative and quantitative approach, which aims to analyze the perception by professionals on the relevance of oral health indicators of the National Program for Access and Quality Improvement of Primary Care (PMAQ-AB) in Fortaleza, Ceará. The demotivation, the discontinuity in providing dental inputs, the abandonment of treatment by the patient, the popular culture in which the pregnant cannot carry out the dental treatment and the insecurity of the professional in the clinical handling related to dental prosthesis, to the attendance of the pregnant, to the attendance of dental urgency and to the diagnosis of user's oral mucosa alteration were problems identified in the operationalization of these indicators and mentioned as interference for the fulfillment of their goals.
DOI: 10.6084/m9.figshare.6504722
title: Knowledge management: Typology from organizational contextual factors

description: Abstract Knowledge Management as a practice that returns competitive advantage and innovation to firms is a consensus among researchers. The Knowledge Management is supported by contextual factors developed differently by organizations. Thus, the aim of this research was to identify a typology for the development of these contextual factors. The study considers five organizational constructs related to Knowledge Management: human resources, teamwork, organizational culture, organizational structure, and knowledge development and absorption. The research was developed from a survey of 78 companies in the automotive sector and data analysis was based on the statistical techniques of exploratory factor analysis, which combines measurable variables into latent factors, cluster analysis, which identifies clusters of companies, and discriminant analysis, which validates the statistical difference between the clusters identified. The results point to four different clusters regarding the practice of Knowledge Management: “Innovative Companies”, “Explorative Companies”, “Exploitative Companies” and “Companies Laggards”.
DOI: 10.6084/m9.figshare.14270115
title: Perception by professionals on the relevance of the oral health indicators in a metropolis of the Brazilian northeastern

description: Exploratory-descriptive study, with qualitative and quantitative approach, which aims to analyze the perception by professionals on the relevance of oral health indicators of the National Program for Access and Quality Improvement of Primary Care (PMAQ-AB) in Fortaleza, Ceará. The demotivation, the discontinuity in providing dental inputs, the abandonment of treatment by the patient, the popular culture in which the pregnant cannot carry out the dental treatment and the insecurity of the professional in the clinical handling related to dental prosthesis, to the attendance of the pregnant, to the attendance of dental urgency and to the diagnosis of user's oral mucosa alteration were problems identified in the operationalization of these indicators and mentioned as interference for the fulfillment of their goals.
DOI: 10.6084/m9.figshare.6504722.v1
title: Knowledge management: Typology from organizational contextual factors

description: Abstract Knowledge Management as a practice that returns competitive advantage and innovation to firms is a consensus among researchers. The Knowledge Management is supported by contextual factors developed differently by organizations. Thus, the aim of this research was to identify a typology for the development of these contextual factors. The study considers five organizational constructs related to Knowledge Management: human resources, teamwork, organizational culture, organizational structure, and knowledge development and absorption. The research was developed from a survey of 78 companies in the automotive sector and data analysis was based on the statistical techniques of exploratory factor analysis, which combines measurable variables into latent factors, cluster analysis, which identifies clusters of companies, and discriminant analysis, which validates the statistical difference between the clusters identified. The results point to four different clusters regarding the practice of Knowledge Management: “Innovative Companies”, “Explorative Companies”, “Exploitative Companies” and “Companies Laggards”.
DOI: 10.6084/m9.figshare.7973924.v1
title: Poultry Litter for the Production and Quality of Enterolobium contortisiliquum Vell. Seedlings

description: ABSTRACT The objective of this work was to determine the efficiency of poultry litter ratios added to the commercial substrate and to peat in the growth and quality of Enterolobium contortisiliquum seedlings. The design was completely randomized, with 10 replications, in a 2 × 5 factorial arrangement with two substrates (peat and commercial substrate) and five poultry litter ratios, added (v:v) to both substrates (0, 25%, 50%, 75% and 100%). The height, stem diameter, dry matter of shoot and roots, root specific surface area, Dickson quality index and NPK accumulated in dry matter of shoot and roots were evaluated. Poultry litter can be added up to a 35% ratio to the commercial substrate or to peat for the production of Enterolobium contortisiliquum seedlings; proportions above this, for both substrates, compromise the production. The treatments with peat provided lower growth and quality of Enterolobium contortisiliquum seedlings, compared to the commercial substrate.
DOI: 10.6084/m9.figshare.7508186
title: Superposition of structures in the interference zone between the southern Brasília belt and the central Ribeira belt in the region SW of Itajubá (MG), SE Brazil

description: ABSTRACT: The study area is localized in the Socorro nappe, part of the southern Brasília belt, with a minor part in the Embu terrane, part of the central Ribeira belt. Three phases of deformation were detected, Dn-1, Dn and Dn+1. Sn-1 seems to be generally transposed into Sn, but in the northwestern part it is well preserved, dipping about 60º to W and SW, with a stretching and/or mineral lineation plunging down dip. The main foliation in most of the area is Sn, dipping about 70º to SSE. Dn folds are tight to isoclinal, with axes that plunge about 40º to SW. Quartz-feldspathic segregation veins are folded by Dn. The structures related to Dn-1 and Dn are cut and modified by four important shear zones ascribed to deformation phase Dn+1. Two samples of a granite that is elongated along the Caxambu shear zone, and also cut by it, were dated. One yielded a crystallization age of 575 ± 5 Ma, and the other one, from the shear zone, an age of 567 ± 8 Ma, interpreted either as representing the age of movement along the Caxambu shear zone, or as metamorphic growth.
DOI: 10.6084/m9.figshare.7508186.v1
title: Superposition of structures in the interference zone between the southern Brasília belt and the central Ribeira belt in the region SW of Itajubá (MG), SE Brazil

description: ABSTRACT: The study area is localized in the Socorro nappe, part of the southern Brasília belt, with a minor part in the Embu terrane, part of the central Ribeira belt. Three phases of deformation were detected, Dn-1, Dn and Dn+1. Sn-1 seems to be generally transposed into Sn, but in the northwestern part it is well preserved, dipping about 60º to W and SW, with a stretching and/or mineral lineation plunging down dip. The main foliation in most of the area is Sn, dipping about 70º to SSE. Dn folds are tight to isoclinal, with axes that plunge about 40º to SW. Quartz-feldspathic segregation veins are folded by Dn. The structures related to Dn-1 and Dn are cut and modified by four important shear zones ascribed to deformation phase Dn+1. Two samples of a granite that is elongated along the Caxambu shear zone, and also cut by it, were dated. One yielded a crystallization age of 575 ± 5 Ma, and the other one, from the shear zone, an age of 567 ± 8 Ma, interpreted either as representing the age of movement along the Caxambu shear zone, or as metamorphic growth.