cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.8092382
title: Use of dehydrated peeled fruit of Luffa cyllindrica as support medium in biological trickling filters: analysis of performance regarding the reduction of the organic content and microbiologic considerations

description: ABSTRACT Domestic sewage treatment experiments were conducted in a pilot installation of biological trickling filters in laboratory, in which the peeled dehydrated fruits of Luffa cyllindrica were used as a support medium for microbiological growth, in order to verify its capacity to remove organic matter, measured in terms of biochemical oxygen demand and chemical oxygen demand. The results obtained, when compared to results from similar pilot plant using stones as supporting medium, indicated that Luffa cyllindrica can substitute, under specific conditions, the traditional support media. Although detailed microbiologic studies were not among the objectives of this study, it was also observed that the biofilm found in Luffa cyllindrica was richer in species and in a higher evolutive stage than the biofilm found in the stones. Further studies are recommended.
DOI: 10.6084/m9.figshare.8092391.v1
title: Determinants of teachers’ work ability in basic education in Brazil: Educatel Study, 2016

description: The study aimed to analyze the relationship between health, work characteristics, education, and skills on the work ability of teachers in basic education in Brazil. This was a cross-sectional, population-based study using data from the Brazilian National Survey on Health, Work Conditions, and Absences in Schoolteachers in Basic Education (Educatel Study). A probabilistic sample of 6,510 teachers answered a telephone interview in 2015 with questions on sociodemographic data, health status, education and skills, work characteristics, and absenteeism. Structural equation modeling (SEM) was used in multivariate analysis and standardized coefficients (SC) were calculated to analyze direct and indirect effects between the outcomes. Health status showed a direct effect on work ability (SC = -0.83, p &lt; 0.01). Work characteristics directly affected health status (SC = 0.60, p &lt; 0.01) and work ability (SC = -0.25, p &lt; 0.05), especially noise at work and students’ unruliness. Total effect (sum of direct and indirect effects) of work characteristics on work ability was -0.75 (p &lt; 0.01). The study concluded that the relations between health status and work characteristics of Brazilian teachers in basic education are complex and negatively affect work ability. Potential actions to promote and maintain work ability should take into account the psychosocial demands of teaching and measures to maintain order and discipline in the classroom.
DOI: 10.6084/m9.figshare.8092382.v1
title: Use of dehydrated peeled fruit of Luffa cyllindrica as support medium in biological trickling filters: analysis of performance regarding the reduction of the organic content and microbiologic considerations

description: ABSTRACT Domestic sewage treatment experiments were conducted in a pilot installation of biological trickling filters in laboratory, in which the peeled dehydrated fruits of Luffa cyllindrica were used as a support medium for microbiological growth, in order to verify its capacity to remove organic matter, measured in terms of biochemical oxygen demand and chemical oxygen demand. The results obtained, when compared to results from similar pilot plant using stones as supporting medium, indicated that Luffa cyllindrica can substitute, under specific conditions, the traditional support media. Although detailed microbiologic studies were not among the objectives of this study, it was also observed that the biofilm found in Luffa cyllindrica was richer in species and in a higher evolutive stage than the biofilm found in the stones. Further studies are recommended.
DOI: 10.6084/m9.figshare.8092373
title: The cost of unequal integration: an interdisciplinary agenda for its rediscovery in North America and beyond

description: Abstract This paper addresses the need for a new analytical framework to reach a thorough understanding of the outcomes of unequal trade integration, in North America and beyond. To achieve this goal, it was divided in four main sections: the deconstruction of the orthodox argument of free trade areas; the assessment of the contrasting outcomes of NAFTA; an overview of relevant literature; and the delineation of an interdisciplinary agenda. The hypothesis is that the lack of theoretical certainty is due, in parts, to the causal opening of the object of study and to the scarce interaction of specialties.
DOI: 10.6084/m9.figshare.8092376
title: Reproductive biology of the Brazilian blind electric ray Benthobatis kreffti (Chondrichthyes: Narcinidae)

description: ABSTRACT This study provides information on the reproductive biology of the Brazilian blind electric ray Benthobatis kreffti, endemic to southern and southeastern Brazil. Individuals were caught by bottom trawl carried out in 2003 and 2007, at 492-501 m depth off the São Paulo State continental slope. A total of 152 females (115-299 mm) and 144 males (91-243 mm) were sampled. Maturity was first observed at 177 and 162 mm, with total length at 50% maturity of 191 and 176 mm in females and males respectively. Uterine fecundity ranged from 1-3 and was not related to female total length. Size at birth estimated from the largest near-term observed embryos and smallest free-swimming ray was 91-100 mm. The low fecundity observed is typical of deepwater elasmobranch species, as well as late maturity in comparison with costal species. The relatively large size-at-birth suggests that this species invests more in length of each embryo than in litter size, increasing the offspring’s survival chance. In this context, these parameters highlight the vulnerability of this and other deepwater species to non-natural death, mostly caused by deep-sea fisheries.
DOI: 10.6084/m9.figshare.8092379
title: Diagnostic performance of thyroid ultrasound in Hürthle cell carcinomas

description: ABSTRACT Objective Hürthle cell carcinomas (HCCs) of the thyroid have been recently reclassified as a separate entity due to their distinct clinical and molecular profiles. Few studies have assessed the ability of preoperative characteristics in differentiating HCCs from Hürthle cell adenomas (HCAs) due to the low prevalence of both lesions. This study aimed to compare the preoperative features of HCCs and HCAs and evaluate the diagnostic performance of ultrasound in distinguishing between both. Subjetcs and methods Retrospective study including 101 patients (52 HCCs and 49 HCAs) who underwent thyroid surgery from 2000 to 2016. Clinical, ultrasonographic, and histological data were reviewed. Diagnostic performance of suspicious sonographic features was analyzed in 51 cases (24 HCCs and 27 HCAs). Results Hürthle cell neoplasms were predominant in females. Subjects ≥ 55 years represented 58% of the cases of HCCs and 53% of those of HCAs. Carcinomas were significantly larger (p &lt; 0.001), and a tumor size ≥ 4 cm significantly increased the risk of malignancy (odds ratio 3.67). Other clinical, cytologic, and sonographic data were similar between HCCs and HCAs. Among the HCCs, the lesions were purely solid in 54.2%, hypoechoic in 37.5%, and had coarse calcifications in 12.5%, microcalcifications in 8.3%, irregular contours in 4.2%, and a taller-than-wide shape in 16.7%. Predominantly/exclusive intranodular vascularization was observed in 52.6%. Overall, 58% of the HCCs were classified as TI-RADS 4 or 5 compared with 48% of the HCAs. TI-RADS 4 or 5 had a specificity of only 51.8% and a positive likelihood ratio of 1.21. Conclusions Apart from the lesion size, no other preoperative feature adequately distinguished HCCs from HCAs. Sonographic characteristics raising suspicion for malignancy, which are mostly present in papillary carcinomas, were infrequent in HCCs. New tools must be developed to improve preoperative diagnosis and deferral of surgery in cases of adenomas.
DOI: 10.6084/m9.figshare.8092367
title: O Pronaf na Zona da Mata Mineira: efeitos nos PIBs total e setorial dos municípios

description: Abstract: This work aims to analyze the effects of the National Program for Strengthening Family Agriculture (Pronaf) in the Total and Sectorial Gross Domestic Products of Zona da Mata of Minas Gerais mesoregion between 2001 and 2012, taking into account the historical, geographic, socioeconomic, productive and land characteristics. The importance of this type of analysis is notorious because of the large scope of the program and the representativeness of family agriculture in the national scenario and in the rural properties of the mesoregion. Fixed-effects Panel Data Analysis was used to measure the elasticity of GDP and sectorial aggregate values in relation to the volume of resources contracted via Pronaf. It was concluded that the program had a positive effect on the mesoregional product, and that the degree of this effect in each municipality is directly related to institutional, historical and economic issues.
DOI: 10.6084/m9.figshare.8092370
title: Relationships between fish and otolith dimensions of Pomatomus saltatrix (Linnaeus, 1766) (Perciformes: Pomatomidae) in southeastern Brazil

description: ABSTRACT The bluefish, Pomatomus saltatrix (Linnaeus, 1766), was used as a species-specific model to study morphometric relationships between otolith size and relative growth variables. Length-weight relationships between Otolith (Length-OL, Height-OH, and Weight-OW) and fish measurements (Total Length-TL and Total Weight-TW) were determined for fishes captured monthly during the year 2015 off the southeastern coast of Brazil. The ANCOVA and Kruskal-Wallis analysis did not indicate significant differences in the relative growth constants between sexes and length frequency distributions (p &gt; 0.05). The condition factor also did not present significant differences between sexes, and right and left otolith measurements (p &gt; 0.05). A total of 398 specimens were sampled: TL = 43.6-67.0 cm, TW = 365-2400 g, OL = 9.65-15.25 mm, OH = 3.65 - 5.45 mm and OW = 0.03-0.11 g. The LWR for grouped sexes was TW = 0.050TL2.55 and otoliths OW = 6.17E-05OL2.59. The best adjustments were TL vs OL (r2 = 0.90); OL vs OW (r2 = 0.90); TW vs OW (r2 = 0.81); and TW vs OL (r2 = 0.80). These results showed that such relationships are helpful tools for predicting the fish size and weight from otoliths, which may be used in food habits and paleontology studies, and other fisheries management applications.
DOI: 10.6084/m9.figshare.8092376.v1
title: Reproductive biology of the Brazilian blind electric ray Benthobatis kreffti (Chondrichthyes: Narcinidae)

description: ABSTRACT This study provides information on the reproductive biology of the Brazilian blind electric ray Benthobatis kreffti, endemic to southern and southeastern Brazil. Individuals were caught by bottom trawl carried out in 2003 and 2007, at 492-501 m depth off the São Paulo State continental slope. A total of 152 females (115-299 mm) and 144 males (91-243 mm) were sampled. Maturity was first observed at 177 and 162 mm, with total length at 50% maturity of 191 and 176 mm in females and males respectively. Uterine fecundity ranged from 1-3 and was not related to female total length. Size at birth estimated from the largest near-term observed embryos and smallest free-swimming ray was 91-100 mm. The low fecundity observed is typical of deepwater elasmobranch species, as well as late maturity in comparison with costal species. The relatively large size-at-birth suggests that this species invests more in length of each embryo than in litter size, increasing the offspring’s survival chance. In this context, these parameters highlight the vulnerability of this and other deepwater species to non-natural death, mostly caused by deep-sea fisheries.
DOI: 10.6084/m9.figshare.8092364
title: A Intermodalidade no Transporte de Etanol Brasileiro: aplicação de um modelo de equilíbrio parcial

description: Abstract: The search for renewable energy sources has increased the world demand for ethanol. Brazil is the second largest producer, but the costs to transport this production are increasing. The aim of this paper is to analyze alternatives to transport ethanol in relation to the current logistics conditions in Brazil. To perform this, it is proposed to apply a partial equilibrium model in the form of a Mixed Complementarity Problem (PCM). Three scenarios were evaluated: the first represents the current perspective, road and railroad routes are practiced. In Scenario 2, a 15% reduction in the value of rail freight was estimated, and scenario 3 includes new pipeline projects underway in the country. Scenario 3 presented the best commercialization volumes with a 0.20% increase in relation to the baseline scenario and an increase in foreign exchange of US$ 27 million, indicating that road projects that prioritize intermodality, mainly through pipelines, imply reductions in transportation costs and an improvement in efficiency of the logistic system. As a future proposal, it is suggested to include the US subsidy for ethanol, since such a parameter could alter Brazilian competitiveness.
DOI: 10.6084/m9.figshare.8092370.v1
title: Relationships between fish and otolith dimensions of Pomatomus saltatrix (Linnaeus, 1766) (Perciformes: Pomatomidae) in southeastern Brazil

description: ABSTRACT The bluefish, Pomatomus saltatrix (Linnaeus, 1766), was used as a species-specific model to study morphometric relationships between otolith size and relative growth variables. Length-weight relationships between Otolith (Length-OL, Height-OH, and Weight-OW) and fish measurements (Total Length-TL and Total Weight-TW) were determined for fishes captured monthly during the year 2015 off the southeastern coast of Brazil. The ANCOVA and Kruskal-Wallis analysis did not indicate significant differences in the relative growth constants between sexes and length frequency distributions (p &gt; 0.05). The condition factor also did not present significant differences between sexes, and right and left otolith measurements (p &gt; 0.05). A total of 398 specimens were sampled: TL = 43.6-67.0 cm, TW = 365-2400 g, OL = 9.65-15.25 mm, OH = 3.65 - 5.45 mm and OW = 0.03-0.11 g. The LWR for grouped sexes was TW = 0.050TL2.55 and otoliths OW = 6.17E-05OL2.59. The best adjustments were TL vs OL (r2 = 0.90); OL vs OW (r2 = 0.90); TW vs OW (r2 = 0.81); and TW vs OL (r2 = 0.80). These results showed that such relationships are helpful tools for predicting the fish size and weight from otoliths, which may be used in food habits and paleontology studies, and other fisheries management applications.
DOI: 10.6084/m9.figshare.8092373.v1
title: The cost of unequal integration: an interdisciplinary agenda for its rediscovery in North America and beyond

description: Abstract This paper addresses the need for a new analytical framework to reach a thorough understanding of the outcomes of unequal trade integration, in North America and beyond. To achieve this goal, it was divided in four main sections: the deconstruction of the orthodox argument of free trade areas; the assessment of the contrasting outcomes of NAFTA; an overview of relevant literature; and the delineation of an interdisciplinary agenda. The hypothesis is that the lack of theoretical certainty is due, in parts, to the causal opening of the object of study and to the scarce interaction of specialties.
DOI: 10.6084/m9.figshare.8092379.v1
title: Diagnostic performance of thyroid ultrasound in Hürthle cell carcinomas

description: ABSTRACT Objective Hürthle cell carcinomas (HCCs) of the thyroid have been recently reclassified as a separate entity due to their distinct clinical and molecular profiles. Few studies have assessed the ability of preoperative characteristics in differentiating HCCs from Hürthle cell adenomas (HCAs) due to the low prevalence of both lesions. This study aimed to compare the preoperative features of HCCs and HCAs and evaluate the diagnostic performance of ultrasound in distinguishing between both. Subjetcs and methods Retrospective study including 101 patients (52 HCCs and 49 HCAs) who underwent thyroid surgery from 2000 to 2016. Clinical, ultrasonographic, and histological data were reviewed. Diagnostic performance of suspicious sonographic features was analyzed in 51 cases (24 HCCs and 27 HCAs). Results Hürthle cell neoplasms were predominant in females. Subjects ≥ 55 years represented 58% of the cases of HCCs and 53% of those of HCAs. Carcinomas were significantly larger (p &lt; 0.001), and a tumor size ≥ 4 cm significantly increased the risk of malignancy (odds ratio 3.67). Other clinical, cytologic, and sonographic data were similar between HCCs and HCAs. Among the HCCs, the lesions were purely solid in 54.2%, hypoechoic in 37.5%, and had coarse calcifications in 12.5%, microcalcifications in 8.3%, irregular contours in 4.2%, and a taller-than-wide shape in 16.7%. Predominantly/exclusive intranodular vascularization was observed in 52.6%. Overall, 58% of the HCCs were classified as TI-RADS 4 or 5 compared with 48% of the HCAs. TI-RADS 4 or 5 had a specificity of only 51.8% and a positive likelihood ratio of 1.21. Conclusions Apart from the lesion size, no other preoperative feature adequately distinguished HCCs from HCAs. Sonographic characteristics raising suspicion for malignancy, which are mostly present in papillary carcinomas, were infrequent in HCCs. New tools must be developed to improve preoperative diagnosis and deferral of surgery in cases of adenomas.
DOI: 10.6084/m9.figshare.8092355
title: Particles panels prepared from dendê mesocarp as an alternative to MDF used in civil construction

description: ABSTRACT The lack of forest resources integrated with the need of purchasing more environmentally friendly products requires the use of other types of biomass besides wood in the construction sector. Therefore, the dendê mesocarp - waste arising from the agro-industry and with great use potential in developing new materials - is an alternative in the preparation of lignocellulosic panels to replace MDF (Medium Density Fiberboard), that is conventionally used. Thus, this work demonstrated the feasibility of the production and the structural integrity of this type of panel in the manufacture of building blocks to be used in civil construction through a comparative study of their properties with the MDF panels. The methodology consists in performing characterization tests in panels through determining their physical (water absorption, swelling and density) and mechanical (flexion resistance and modulus of elasticity) properties, besides analysing the morphology of the panels produced by the Scanning Electron Microscopy (MEV) technique, performing a chemical (via infrared spectrum Fourier transform) and thermal analysis through derived thermogravimetric curves. The results obtained suggest that the production of these panels without a binder, obtained by the incorporation of dendê mesocarp, adds value to the production chain of dendê, in addition to emerge as an alternative to the challenges inherent to the traditional production of wood panels and, consequently, is considered as an option of a constructive element to be integrated with the construction.
DOI: 10.6084/m9.figshare.8092358
title: Patterns of science teaching practice with the use of an instrument designated “X ray of practice”

description: Abstract The article describes a proposal for an instrument for collecting a description of the operational practice of teachers, allowing for access to essential educational events that structure their practices, the physical bone of their theory practice, designated X-ray of the practice. The methodology previously proposed to identify the teachers’ pedagogical sequences is, in this work, used as an interpretive matrix by the investigator of the descriptions of the teachers’ practice, experiencing its usefulness and contributing to the validation of the assumptions in its construction. The article describes the methodological procedure in the application with a group of teachers, the process of inference by the investigator, and examples of the practice patterns found in the studied group: a pattern radically more transmissive, a transmissive pattern based on a practical activity and a pattern with constructivist indications.
DOI: 10.6084/m9.figshare.8092361
title: Effects of the electronic invoice program on the increase of state collection

description: Abstract This article aims to verify if the implementation of the Electronic Invoice program (EI), generated an increase in the collection in the state of Goiás, Brazil. For the research, means test analysis (t-test) was used along with the estimation of regressions difference-in-differences. The results indicated that the average collection in the state of Goiás was statistically higher in the period after the implementation of EI and that the increase in the collection from companies required to issue EI was superior to the collection from those not required to during the period of investigation. Therefore, although the main focus of EI is not the increase in tax collection, it can be observed that the institutionalization of a program of standardization and sharing of fiscal documents included improvements in the inspection processes of the tax administration, increasing the collection of state taxes through the reduction of tax default.
DOI: 10.6084/m9.figshare.8092367.v1
title: O Pronaf na Zona da Mata Mineira: efeitos nos PIBs total e setorial dos municípios

description: Abstract: This work aims to analyze the effects of the National Program for Strengthening Family Agriculture (Pronaf) in the Total and Sectorial Gross Domestic Products of Zona da Mata of Minas Gerais mesoregion between 2001 and 2012, taking into account the historical, geographic, socioeconomic, productive and land characteristics. The importance of this type of analysis is notorious because of the large scope of the program and the representativeness of family agriculture in the national scenario and in the rural properties of the mesoregion. Fixed-effects Panel Data Analysis was used to measure the elasticity of GDP and sectorial aggregate values in relation to the volume of resources contracted via Pronaf. It was concluded that the program had a positive effect on the mesoregional product, and that the degree of this effect in each municipality is directly related to institutional, historical and economic issues.