cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9927578
title: Surface Esterification of Sisal Fibres for use as Reinforcement in Cementitious Matrix

description: Vegetable fibres have been shown to be promising as reinforcement in composites because they are abundant, renewable, and low cost. However, the fibre-matrix interaction can be damaged by dimensional variation of vegetable fibres, due to moisture variations. The alkaline medium of cementitious matrix is aggressive to natural fibres, compromising their durability. The aim of this study was to modify sisal fibres (Agave sisalana) by esterification with acyl chlorides to improve their stability and compatibility with the cementitious matrix in order to optimize the performance and durability of composites. The esterified fibres were characterized by moisture absorption, tensile tests, Thermogravimetric Analysis (TGA), and Scanning Electron Microscopy (SEM) and the composites by bending tests and SEM. The results showed that esterification changed both the morphology and physical properties of sisal fibres. The composite produced using esterified fibres with octanoyl chloride maintained the properties of 28 to 90 days of age, which represented an improvement in the fibre stability compared to natural fibre composite.
DOI: 10.6084/m9.figshare.9927587.v1
title: Scientific Literacy and knowledge contextualization: a study of traffic applied Physics

description: Abstract We present the results of a study with High School graduates that sought to investigate the scientific literacy level and the ability to interpret traffic situations in the light of Physics. From this measurement, we performed statistical tests in order to infer if these indexes had a connection with previous Physics classes experienced by the participants and also with the degree of information about scientific topics that they believed to hold. As results, it was possible to show statistically significant connections between the majority of the analyzed constructs, highlighting the correlation between the scientific literacy level of those who attended Physics classes with characteristics that could enhance Significant Learning. As a contribution, we defend the inclusion of a fourth axis, Scientific Proficiency, in the way of measuring the level of scientific literacy, postulated by Joh Miller, in which it is considered scientifically literate those who submit minimum domain: 1) of the contents of science; 2) of nature of science; and 3) of the impact of science and technology on society and the environment.
DOI: 10.6084/m9.figshare.9927581
title: STABILITY AND TOXICITY PROFILE OF SOLUTION ENHANCED DISPERSION BY SUPERCRITICAL FLUIDS (SEDS) FORMULATED Andrographis paniculata EXTRACT

description: Abstract The main objective was to evaluate the stability and toxicity of a Solution Enhanced Dispersion by Supercritical Fluids (SEDS) formulated A. paniculata extract that was intended for food applications. The best formulated SEDS A. paniculata extract with improved dissolution of andrographolide (data not shown) was obtained using 25 mg/mL A. paniculata extract (maceration in acetone) and 6 mg/mL Eudragit L100-55 with acetone as feed solvent at the following SEDS co-precipitation conditions: 150 bar, 40 ̊C, 15 L/min CO2 flow rate (1 bar, 25 ̊C), 0.5 mL/min liquid feed flow. Sticky A. paniculata extract with 16% w/w andrographolide was transformed into SEDS co-precipitates concentrated with 20.4% w/w andrographolide. Only 20-30% of andrographolide was degraded after two-month storage under 5, 30, 45 ̊C at 75% relative humidity (RH). About 30-60% of andrographolide was degraded after addition into drinking water, orange drink, soybean milk for a day. This would imply its unstable nature after being dispersed and wetted in liquid food. SEDS co-precipitate was found to be practically acetone-free (&lt; 0.1 ppm) by Headspace Gas Chromatography-Mass Spectrometry (GC-MS). This showed the capability of the SEDS process in stripping off acetone. Higher cytotoxic potential of SEDS co-precipitates (LC50 = 46.46 µg/mL) than extract (LC50 = 150.45 µg/mL) was observed.
DOI: 10.6084/m9.figshare.9927575
title: A Colonial Court: architecture, ornaments and utensils of the Ouro Preto Old Palace (1721-1735)

description: ABSTRACT This article analyzed the architecture, ornaments and utensils present in the Ouro Preto Old Palace, the first house of governors installed in Vila Rica and a building that served as the official residence of the Dom Lourenço de Almeida (1721-1732) and Conde das Galvêas captains-generals. The house of the Vila Rica main captain Henrique Lopes de Araújo, host and benefactor, resident in a neighboring and integrated building to the palace, was also evaluated. Although the Ouro Preto Old Palace has became a courtier space, adapted to the demands of the noble or seigniorial house, it maintained specific characteristics of the colonial reality, manifested, for example, in the presence of the slavery, which will determine, furthermore, the future of that property.
DOI: 10.6084/m9.figshare.9927581.v1
title: STABILITY AND TOXICITY PROFILE OF SOLUTION ENHANCED DISPERSION BY SUPERCRITICAL FLUIDS (SEDS) FORMULATED Andrographis paniculata EXTRACT

description: Abstract The main objective was to evaluate the stability and toxicity of a Solution Enhanced Dispersion by Supercritical Fluids (SEDS) formulated A. paniculata extract that was intended for food applications. The best formulated SEDS A. paniculata extract with improved dissolution of andrographolide (data not shown) was obtained using 25 mg/mL A. paniculata extract (maceration in acetone) and 6 mg/mL Eudragit L100-55 with acetone as feed solvent at the following SEDS co-precipitation conditions: 150 bar, 40 ̊C, 15 L/min CO2 flow rate (1 bar, 25 ̊C), 0.5 mL/min liquid feed flow. Sticky A. paniculata extract with 16% w/w andrographolide was transformed into SEDS co-precipitates concentrated with 20.4% w/w andrographolide. Only 20-30% of andrographolide was degraded after two-month storage under 5, 30, 45 ̊C at 75% relative humidity (RH). About 30-60% of andrographolide was degraded after addition into drinking water, orange drink, soybean milk for a day. This would imply its unstable nature after being dispersed and wetted in liquid food. SEDS co-precipitate was found to be practically acetone-free (&lt; 0.1 ppm) by Headspace Gas Chromatography-Mass Spectrometry (GC-MS). This showed the capability of the SEDS process in stripping off acetone. Higher cytotoxic potential of SEDS co-precipitates (LC50 = 46.46 µg/mL) than extract (LC50 = 150.45 µg/mL) was observed.
DOI: 10.6084/m9.figshare.9927566
title: Development of technology-based firms of the Vale do Paraíba Paulista region: survey with incubators managers and incubated companies

description: Abstract Technology-based firms are small businesses that are characterized by being related to innovation and technological development in production and services. These companies for a period of time receive support calls based Technology-based incubators. The objective of this study was to analyze the degree of importance perceived by managers of Technology-based firms and managers of Technology-based incubators of the factors that contribute to the development of Technology-based firms of the Vale do Paraíba Paulista Region. The following factors were analyzed: entrepreneurial characteristics, resources offered by Technology-based incubators, features offered in partnership with other development agents and selection requirements of Technology-based incubators by the Technology-based firms. One for the five managers of the Technology-based incubators and the other for twenty-five managers of Technology-based firms. For this, a survey in June 2011 was applied and two questionnaires divided into four parts was performed. The Vale do Paraíba Paulista Region was chosen to concentrate an important Industrial and Technological Pole, which stands out by strong economic growth, located between the axis of two major Brazilian cities, Rio de Janeiro and São Paulo. The completion of the work enabled visualize how technology-based entrepreneurship has been practiced in the region Vale do Paraíba Paulista present important information in the region in 2011. It also allowed me to analyze the perception of managers regarding the factors considered.
DOI: 10.6084/m9.figshare.9927569
title: Feeding systems and tocopherol level in the diet and their effects on the quality of lamb meat: a meta-analysis

description: ABSTRACT The objective of the present study was to evaluate, through a meta-analysis, the effects of feeding systems and tocopherol levels found in the diet of lambs on qualitative characteristics of their meat. A search of the computerised literature in Science Direct databases, PubMed, Scopus, and SciELO virtual library was carried out to select works that evaluated the quality of lamb meat. As a first requirement for inclusion in the meta-analysis, articles were selected with the keywords “tocopherol”, “meat”, and “lamb”. The variables extracted from the articles were classified according to the type of feeding system and tocopherol level in the diet of lambs. Production systems alter the qualitative characteristics of meat. Lambs raised exclusively on pasture present a higher tocopherol concentration in their meat, a lower omega 6:omega 3 ratio, a lower omega 6 concentration, and a higher conjugated linoleic acid concentration. Regardless of the dietary systems, when we classify the tocopherol levels of lamb diet, the tocopherol concentration and fatty acid level are altered by tocopherol levels in the diet. The lower tocopherol level in the diet results in meat with lower tocopherol concentration and with greater propensity to lipid oxidation.
DOI: 10.6084/m9.figshare.9927575.v1
title: A Colonial Court: architecture, ornaments and utensils of the Ouro Preto Old Palace (1721-1735)

description: ABSTRACT This article analyzed the architecture, ornaments and utensils present in the Ouro Preto Old Palace, the first house of governors installed in Vila Rica and a building that served as the official residence of the Dom Lourenço de Almeida (1721-1732) and Conde das Galvêas captains-generals. The house of the Vila Rica main captain Henrique Lopes de Araújo, host and benefactor, resident in a neighboring and integrated building to the palace, was also evaluated. Although the Ouro Preto Old Palace has became a courtier space, adapted to the demands of the noble or seigniorial house, it maintained specific characteristics of the colonial reality, manifested, for example, in the presence of the slavery, which will determine, furthermore, the future of that property.
DOI: 10.6084/m9.figshare.9927578.v1
title: Surface Esterification of Sisal Fibres for use as Reinforcement in Cementitious Matrix

description: Vegetable fibres have been shown to be promising as reinforcement in composites because they are abundant, renewable, and low cost. However, the fibre-matrix interaction can be damaged by dimensional variation of vegetable fibres, due to moisture variations. The alkaline medium of cementitious matrix is aggressive to natural fibres, compromising their durability. The aim of this study was to modify sisal fibres (Agave sisalana) by esterification with acyl chlorides to improve their stability and compatibility with the cementitious matrix in order to optimize the performance and durability of composites. The esterified fibres were characterized by moisture absorption, tensile tests, Thermogravimetric Analysis (TGA), and Scanning Electron Microscopy (SEM) and the composites by bending tests and SEM. The results showed that esterification changed both the morphology and physical properties of sisal fibres. The composite produced using esterified fibres with octanoyl chloride maintained the properties of 28 to 90 days of age, which represented an improvement in the fibre stability compared to natural fibre composite.
DOI: 10.6084/m9.figshare.9927572
title: EFFECT OF Acidithiobacillus thiooxidans-CYSTEINE INTERACTIONS ON PYRITE BIOOXIDATION BY Acidithiobacillus ferrooxidans IN THE PRESENCE OF COAL COMPOUNDS

description: Abstract This study evaluated the biooxidation of pyrite contained in a Colombian coal (2.38 mm &lt; particle size &lt; 0.50 mm). The variables were cysteine concentration (0-600 mg/L) and culture type (pure Acidithiobacillus ferrooxidans (ATCC 23270) and a consortium of Acidithiobacillus thiooxidans (ATCC 15494) and Acidithiobacillus ferrooxidans). Pyrite oxidation for the assays without cysteine was 31.14% after 12 days. In the presence of pure A. ferrooxidans, oxidation increased by 8.18% in the assays containing 60 mg Cys/L. In contrast, the counterpart using the consortium exhibited a significant increase in redox potential, which improved oxidation by 28.44%. Since all the assays had a similar kaolinite removal (around 31.45%), and the experiments without cysteine did not show differences in behaviour, the A. thiooxidans-cysteine interactions might have been responsible for increasing Fe3+ regeneration, alleviating the toxic effect of Al3+ ion dissolution, thus improving pyrite oxidation. The consortium-cysteine-coal interactions contrasted with those proposed by other authors for A. ferrooxidans-cysteine-pure pyrite and A. thiooxidans-cysteine, indicating different metabolic pathways in the presence of inorganic and organic coal matrices. On the other hand, the biooxidation rate decreased for both cultures in the presence of 600 mg Cys/L, showing similar inhibition to that reported in the literature.
DOI: 10.6084/m9.figshare.9927560
title: Genetic diversity of Echinococcus vogeli in the western Brazilian Amazon

description: Human polycystic echinococcosis is a parasitic infection caused by the larval stage of Echinococcus vogeli, which occurs in rural areas of Central and South America. Until now, little information on the genetic variability of E. vogeli is available. Here, 32 samples from human-excised E. vogeli cysts had a 396-bp sequence of the mitochondrial cytochrome oxidase I (COI) gene sequenced and compared to another 17 COI sequences representing nine Echinococcus species. A Bayesian COI tree revealed that all E. vogeli sequences formed a monophyletic and well-supported clade with an E. vogeli reference sequence. The occurrence of geographically restricted E. vogeli COI haplotypes suggests retention of ancestral polymorphisms with little migration in Acre, Brazil.
DOI: 10.6084/m9.figshare.9927563
title: Metamorphoses in Jaú’s women’s footwear product cluster: from dense to loose-knit network

description: Abstract This study analyzed the changes in the structure of the political network of the footwear Local Productive Cluster (LPC) of Jaú, São Paulo in the period from 1996 to 2016. Network theory was used as theoretical basis because it has gained space in organizational studies in the last decades, besides providing explanations for various phenomena, especially to the study of productive arrangements. The sample involved 90 actors divided into three periods: 1996-2001, 2002-2010 and 2011-2016. For construction of the networks, the software Ucinet and Gephi were used. In addition to a contextual analysis, the ARS metrics (centrality, density, geodesic distance and subgroups) made it possible to identify the interactions among the actors. The results identified structural changes in the network. The number of actors that increased from 29 in the first period to 70 actors in the second period (+141%) and reduced to 39 in the following period (-44%). As for density, it was identified a dense network in the period 1996/2001 and later a diffuse network and pulverized access of information and resources in the periods 2002/2010 and 2011/2016. The central actors were Sindicalçados, Sebrae and directors of the employers' union. The participation of Sebrae and other entities influenced the creation of bonds and provided economic gains to the companies of Jaú, especially in the period 2002/2009, since the entities and the partnerships signed, not only sought the articulation of the entrepreneurs, they often became the protagonists of the changes. However, the decrease in Sebrae's shares as of 2010, has potentiated the reduction of economic indicators such as the number of companies and jobs, when compared to other shoe producing regions in Brazil.
DOI: 10.6084/m9.figshare.9927566.v1
title: Development of technology-based firms of the Vale do Paraíba Paulista region: survey with incubators managers and incubated companies

description: Abstract Technology-based firms are small businesses that are characterized by being related to innovation and technological development in production and services. These companies for a period of time receive support calls based Technology-based incubators. The objective of this study was to analyze the degree of importance perceived by managers of Technology-based firms and managers of Technology-based incubators of the factors that contribute to the development of Technology-based firms of the Vale do Paraíba Paulista Region. The following factors were analyzed: entrepreneurial characteristics, resources offered by Technology-based incubators, features offered in partnership with other development agents and selection requirements of Technology-based incubators by the Technology-based firms. One for the five managers of the Technology-based incubators and the other for twenty-five managers of Technology-based firms. For this, a survey in June 2011 was applied and two questionnaires divided into four parts was performed. The Vale do Paraíba Paulista Region was chosen to concentrate an important Industrial and Technological Pole, which stands out by strong economic growth, located between the axis of two major Brazilian cities, Rio de Janeiro and São Paulo. The completion of the work enabled visualize how technology-based entrepreneurship has been practiced in the region Vale do Paraíba Paulista present important information in the region in 2011. It also allowed me to analyze the perception of managers regarding the factors considered.
DOI: 10.6084/m9.figshare.9927569.v1
title: Feeding systems and tocopherol level in the diet and their effects on the quality of lamb meat: a meta-analysis

description: ABSTRACT The objective of the present study was to evaluate, through a meta-analysis, the effects of feeding systems and tocopherol levels found in the diet of lambs on qualitative characteristics of their meat. A search of the computerised literature in Science Direct databases, PubMed, Scopus, and SciELO virtual library was carried out to select works that evaluated the quality of lamb meat. As a first requirement for inclusion in the meta-analysis, articles were selected with the keywords “tocopherol”, “meat”, and “lamb”. The variables extracted from the articles were classified according to the type of feeding system and tocopherol level in the diet of lambs. Production systems alter the qualitative characteristics of meat. Lambs raised exclusively on pasture present a higher tocopherol concentration in their meat, a lower omega 6:omega 3 ratio, a lower omega 6 concentration, and a higher conjugated linoleic acid concentration. Regardless of the dietary systems, when we classify the tocopherol levels of lamb diet, the tocopherol concentration and fatty acid level are altered by tocopherol levels in the diet. The lower tocopherol level in the diet results in meat with lower tocopherol concentration and with greater propensity to lipid oxidation.
DOI: 10.6084/m9.figshare.9927554
title: Lutzomyia longipalpis (Diptera: Psychodidae) Argentina-Bolivia border: new report and genetic diversity

description: American visceral leishmaniasis (AVL) has two main scenarios of transmission as follows: scattered cases in rural areas and urban outbreaks. Urban AVL is in active dispersion from the northeastern border of Argentina-Paraguay-Brazil to the South. The presence of Lutzomyia longipalpis was initially reported in urban environments in the northwestern border of the country. The presence of Lu. longipalpis, environmental variables associated with its distribution, and its genetic diversity were assessed in Salvador Mazza, Argentina, on the border with Bolivia. The genetic analysis showed high haplotype diversity, low nucleotide diversity, and low nucleotide polymorphism index. We discuss the hypothesis of an expanding urban population with introgressive hybridisation of older haplogroups found in their path in natural forest or rural environments, acquiring a new adaptability to urban environments, and the possibility of changes in vector capacity.
DOI: 10.6084/m9.figshare.9927557
title: Application of new agile approaches at University of São Paulo innovation agency’s entrepreneurship and innovation course

description: Abstract Organizations continually look for new ways to generate ideas and to convert them into innovative products and services, a movement that strengthens entrepreneurship. Considering the context of entrepreneurship education, this paper presents and analyzes the main results obtained with the realization of the “7600001 Innovation and Entrepreneurship” course, offered by the University of São Paulo Innovation Agency (AUSPIN), with support of the platform “Bota Pra Fazer”, an Endeavor and SEBRAE initiative. The paper promotes the discussion concerning best practices for the academic diffusion of entrepreneurship education considering the diffusion of the agile approaches (Design Thinking, Lean Startup and Business Model Canvas). It was possible to conclude that the experience with the 7600001 course, with a blended format and project-oriented learning, was adequate to improve the learning of entrepreneurship at the Brazilian academic environment according to the vision of the students involved.
DOI: 10.6084/m9.figshare.9927560.v1
title: Genetic diversity of Echinococcus vogeli in the western Brazilian Amazon

description: Human polycystic echinococcosis is a parasitic infection caused by the larval stage of Echinococcus vogeli, which occurs in rural areas of Central and South America. Until now, little information on the genetic variability of E. vogeli is available. Here, 32 samples from human-excised E. vogeli cysts had a 396-bp sequence of the mitochondrial cytochrome oxidase I (COI) gene sequenced and compared to another 17 COI sequences representing nine Echinococcus species. A Bayesian COI tree revealed that all E. vogeli sequences formed a monophyletic and well-supported clade with an E. vogeli reference sequence. The occurrence of geographically restricted E. vogeli COI haplotypes suggests retention of ancestral polymorphisms with little migration in Acre, Brazil.