cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6151952
title: Cu-Sn Coatings Produced Using Environmentally Non-Aggressive Electrolyte Containing Sodium Tartrate

description: This work proposes the production of Cu-Sn alloy coatings with anticorrosive properties, using an environmentally non-aggressive bath. The coatings were electrodeposited on carbon steel substrate AISI 1020 using an electrolyte containing CuCl2 and SnCl2, and sodium tartrate as the complexant agent. The produced coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), inductively coupled plasma optical emission spectrometry (ICPOES) and electrochemical impedance spectroscopy (EIS). The film showing the highest corrosion resistance was obtained using j = 100 Am-2. This coating was composed by 95.18 % m/m Cu and 4.83 % m/m Sn, and presented a uniform surface, without defects and small grain sizes. These characteristics probably contributed to the formation of Cu-Sn protective film onto steel substrate from a tartrate bath.
DOI: 10.6084/m9.figshare.6151952.v1
title: Cu-Sn Coatings Produced Using Environmentally Non-Aggressive Electrolyte Containing Sodium Tartrate

description: This work proposes the production of Cu-Sn alloy coatings with anticorrosive properties, using an environmentally non-aggressive bath. The coatings were electrodeposited on carbon steel substrate AISI 1020 using an electrolyte containing CuCl2 and SnCl2, and sodium tartrate as the complexant agent. The produced coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), inductively coupled plasma optical emission spectrometry (ICPOES) and electrochemical impedance spectroscopy (EIS). The film showing the highest corrosion resistance was obtained using j = 100 Am-2. This coating was composed by 95.18 % m/m Cu and 4.83 % m/m Sn, and presented a uniform surface, without defects and small grain sizes. These characteristics probably contributed to the formation of Cu-Sn protective film onto steel substrate from a tartrate bath.
DOI: 10.6084/m9.figshare.6151949
title: Skull shape and size variation within and between mendocinus and torquatus groups in the genus Ctenomys (Rodentia: Ctenomyidae) in chromosomal polymorphism context

description: Abstract We tested the association between chromosomal polymorphism and skull shape and size variation in two groups of the subterranean rodent Ctenomys. The hypothesis is based on the premise that chromosomal rearrangements in small populations, as it occurs in Ctenomys, produce reproductive isolation and allow the independent diversification of populations. The mendocinus group has species with low chromosomal diploid number variation (2n=46-48), while species from the torquatus group have a higher karyotype variation (2n=42-70). We analyzed the shape and size variation of skull and mandible by a geometric morphometric approach, with univariate and multivariate statistical analysis in 12 species from mendocinus and torquatus groups of the genus Ctenomys. We used 763 adult skulls in dorsal, ventral, and lateral views, and 515 mandibles in lateral view and 93 landmarks in four views. Although we expected more phenotypic variation in the torquatus than the mendocinus group, our results rejected the hypothesis of an association between chromosomal polymorphism and skull shape and size variation. Moreover, the torquatus group did not show more variation than mendocinus. Habitat heterogeneity associated to biomechanical constraints and other factors like geography, phylogeny, and demography, may affect skull morphological evolution in Ctenomys.
DOI: 10.6084/m9.figshare.6151949.v1
title: Skull shape and size variation within and between mendocinus and torquatus groups in the genus Ctenomys (Rodentia: Ctenomyidae) in chromosomal polymorphism context

description: Abstract We tested the association between chromosomal polymorphism and skull shape and size variation in two groups of the subterranean rodent Ctenomys. The hypothesis is based on the premise that chromosomal rearrangements in small populations, as it occurs in Ctenomys, produce reproductive isolation and allow the independent diversification of populations. The mendocinus group has species with low chromosomal diploid number variation (2n=46-48), while species from the torquatus group have a higher karyotype variation (2n=42-70). We analyzed the shape and size variation of skull and mandible by a geometric morphometric approach, with univariate and multivariate statistical analysis in 12 species from mendocinus and torquatus groups of the genus Ctenomys. We used 763 adult skulls in dorsal, ventral, and lateral views, and 515 mandibles in lateral view and 93 landmarks in four views. Although we expected more phenotypic variation in the torquatus than the mendocinus group, our results rejected the hypothesis of an association between chromosomal polymorphism and skull shape and size variation. Moreover, the torquatus group did not show more variation than mendocinus. Habitat heterogeneity associated to biomechanical constraints and other factors like geography, phylogeny, and demography, may affect skull morphological evolution in Ctenomys.
DOI: 10.6084/m9.figshare.6151937
title: Soil Biodegradation of PLA/CNW Nanocomposites Modified with Ethylene Oxide Derivatives

description: Due to its ester bonds, poly(lactic acid) (PLA) undergoes biodegradation in humid environments, attracting market attention. The goal of this work was to observe the biodegradation in garden soil of PLA nanocomposites with neat (PLA/CNW) and surfactant modified cellulose nanowhiskers (PLA/CNW/S). Three types of surfactants were tested: poly(ethylene glycol) monooleate (PEGMONO) and poly(ethylene glycol) with molecular weight of 300 and 1000 Da. The films were obtained by solution casting, cut in strips of (2x2) cm and buried in garden soil, monitoring the temperature and humidity. After 90, 120 and 150 days changes were observed in the films by visual inspection, polarized light microscopy, thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR). The results showed that the addition of surfactant favored the biodegradation of nanocomposites and that PLA/CNW/PEG1000 showed the fastest biodegradation rate.
DOI: 10.6084/m9.figshare.6151937.v1
title: Soil Biodegradation of PLA/CNW Nanocomposites Modified with Ethylene Oxide Derivatives

description: Due to its ester bonds, poly(lactic acid) (PLA) undergoes biodegradation in humid environments, attracting market attention. The goal of this work was to observe the biodegradation in garden soil of PLA nanocomposites with neat (PLA/CNW) and surfactant modified cellulose nanowhiskers (PLA/CNW/S). Three types of surfactants were tested: poly(ethylene glycol) monooleate (PEGMONO) and poly(ethylene glycol) with molecular weight of 300 and 1000 Da. The films were obtained by solution casting, cut in strips of (2x2) cm and buried in garden soil, monitoring the temperature and humidity. After 90, 120 and 150 days changes were observed in the films by visual inspection, polarized light microscopy, thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR). The results showed that the addition of surfactant favored the biodegradation of nanocomposites and that PLA/CNW/PEG1000 showed the fastest biodegradation rate.
DOI: 10.6084/m9.figshare.6151928
title: Fruit quality and production of yellow and sweet Passion fruits in northern state of São Paulo

description: Abstract Yield and quality of yellow and sweet passion fruits produced in northern state of São Paulo, Brazil were evaluated, including FB200 Yellow Master, Isla Redondo Amarelo, BRS Rubi do Cerrado, BRS Sol do Cerrado and BRS Gigante Amerelo cultivars, GP09-02, GP09-03, H09- 09, H09-14, HFOP-08 and HFOP-09 intraspecific hybrids, and two selections of sweet passion fruits, BGP DG and BGP DP. Experimental design was comprised of randomized blocks with 13 treatments, five replicates and three plants per plot. BGP DG was the sweet passion fruit selected for fresh fruit market as a result of its higher yield (52.7 t ha-1) and fruit size and mass (243 g). Among yellow passion fruits, GP09-02 stood out because it showed the highest number of fruits per plant after two years of cultivation, even though GP09-02, H09-09, BRS Sol do Cerrado, Isla Redondo Amarelo and FB200 had also presented higher juice content, on average 32.3%, and equivalent accumulated fruit yield. All fruits had high soluble solids contents, with higher concentration for sweet passion fruits (20.0 °Brix) than yellow passion fruits (average of 14.28 °Brix). These cultivars, hybrids and selections have potential for cultivation in northern state of São Paulo and in regions with similar edaphoclimatic conditions.
DOI: 10.6084/m9.figshare.6151928.v1
title: Fruit quality and production of yellow and sweet Passion fruits in northern state of São Paulo

description: Abstract Yield and quality of yellow and sweet passion fruits produced in northern state of São Paulo, Brazil were evaluated, including FB200 Yellow Master, Isla Redondo Amarelo, BRS Rubi do Cerrado, BRS Sol do Cerrado and BRS Gigante Amerelo cultivars, GP09-02, GP09-03, H09- 09, H09-14, HFOP-08 and HFOP-09 intraspecific hybrids, and two selections of sweet passion fruits, BGP DG and BGP DP. Experimental design was comprised of randomized blocks with 13 treatments, five replicates and three plants per plot. BGP DG was the sweet passion fruit selected for fresh fruit market as a result of its higher yield (52.7 t ha-1) and fruit size and mass (243 g). Among yellow passion fruits, GP09-02 stood out because it showed the highest number of fruits per plant after two years of cultivation, even though GP09-02, H09-09, BRS Sol do Cerrado, Isla Redondo Amarelo and FB200 had also presented higher juice content, on average 32.3%, and equivalent accumulated fruit yield. All fruits had high soluble solids contents, with higher concentration for sweet passion fruits (20.0 °Brix) than yellow passion fruits (average of 14.28 °Brix). These cultivars, hybrids and selections have potential for cultivation in northern state of São Paulo and in regions with similar edaphoclimatic conditions.
DOI: 10.6084/m9.figshare.6151919
title: Ballistic Performance of Mallow and Jute Natural Fabrics Reinforced Epoxy Composites in Multilayered Armor

description: Natural fiber reinforced polymer composites have recently been investigated as a component of multilayered armor system (MAS). These composites were found to present advantages when replacing conventional high strength synthetic aramid fabric laminate composite (KevlarTM, with same thickness, as MAS second layer. Continuous and loose natural fibers were up to now mostly used to reinforce these ballistic composites. Only two natural fabrics reinforced polymer composite were so far used with same purpose. Therefore, this work investigated the possibility of substituting KevlarTM for three other natural fabrics, based on mallow and jute fibers, as reinforcement of epoxy composites. Fabrics made of either pure mallow, or 70%mallow/30% jute or 50%mallow/50% jute fibers were separately mixed with epoxy to produce laminate composite plates. These plates were set as second layer of Al2O3/Nb2O5 front ceramic MAS, that were ballistic tested against relatively high energy 7.62 mm ammunition. Indentation depth values caused by the bullet penetration in clay witness, simulating human body behind the MAS, were always found to be below the safety standard limit. These indentation values were similar to those obtained in MAS with KevlarTM as second layer. However, significant economical advantages favor the investigated natural fabric composites over the synthetic Kevlar.
DOI: 10.6084/m9.figshare.6151919.v1
title: Ballistic Performance of Mallow and Jute Natural Fabrics Reinforced Epoxy Composites in Multilayered Armor

description: Natural fiber reinforced polymer composites have recently been investigated as a component of multilayered armor system (MAS). These composites were found to present advantages when replacing conventional high strength synthetic aramid fabric laminate composite (KevlarTM, with same thickness, as MAS second layer. Continuous and loose natural fibers were up to now mostly used to reinforce these ballistic composites. Only two natural fabrics reinforced polymer composite were so far used with same purpose. Therefore, this work investigated the possibility of substituting KevlarTM for three other natural fabrics, based on mallow and jute fibers, as reinforcement of epoxy composites. Fabrics made of either pure mallow, or 70%mallow/30% jute or 50%mallow/50% jute fibers were separately mixed with epoxy to produce laminate composite plates. These plates were set as second layer of Al2O3/Nb2O5 front ceramic MAS, that were ballistic tested against relatively high energy 7.62 mm ammunition. Indentation depth values caused by the bullet penetration in clay witness, simulating human body behind the MAS, were always found to be below the safety standard limit. These indentation values were similar to those obtained in MAS with KevlarTM as second layer. However, significant economical advantages favor the investigated natural fabric composites over the synthetic Kevlar.
DOI: 10.6084/m9.figshare.6151913
title: Incorporation of Lead Containing TV Tube Glass Waste in Aluminous Porcelain

description: The aim of this work was to study the incorporation of lead containing TV tube glass waste as a method to provide alternative raw material for aluminous electrical porcelain. For this purpose, aluminous porcelain formulations containing up to 30 wt.% of TV tube glass waste as a replacement for traditional flux material (sodium feldspar) were pressed and fired in air at 1300 ºC using a fast-firing cycle (&lt; 60 min). X-ray diffraction (XRD), scanning electron microscopy (SEM), linear shrinkage, apparent density, water absorption, and electrical resistivity have been carried out. The results indicated that the aluminous porcelain pieces containing up to 30 wt.% of TV tube glass waste rich in PbO with water absorption between 0.42 and 0.45% and volume electrical resistivity between 1.91 and 2.93 x 1011 Ω.cm have high potential to work as electrical insulator material. This use of lead containing TV tube glass waste can contribute greatly to reducing the environmental impacts related to it, and also save the sources of non-renewable raw materials used in the electrical porcelain sector.
DOI: 10.6084/m9.figshare.6151913.v1
title: Incorporation of Lead Containing TV Tube Glass Waste in Aluminous Porcelain

description: The aim of this work was to study the incorporation of lead containing TV tube glass waste as a method to provide alternative raw material for aluminous electrical porcelain. For this purpose, aluminous porcelain formulations containing up to 30 wt.% of TV tube glass waste as a replacement for traditional flux material (sodium feldspar) were pressed and fired in air at 1300 ºC using a fast-firing cycle (&lt; 60 min). X-ray diffraction (XRD), scanning electron microscopy (SEM), linear shrinkage, apparent density, water absorption, and electrical resistivity have been carried out. The results indicated that the aluminous porcelain pieces containing up to 30 wt.% of TV tube glass waste rich in PbO with water absorption between 0.42 and 0.45% and volume electrical resistivity between 1.91 and 2.93 x 1011 Ω.cm have high potential to work as electrical insulator material. This use of lead containing TV tube glass waste can contribute greatly to reducing the environmental impacts related to it, and also save the sources of non-renewable raw materials used in the electrical porcelain sector.
DOI: 10.6084/m9.figshare.6151910
title: Fibroblast and pre-osteoblast cell adhesive behavior on titanium alloy coated with diamond film

description: It is well known that titanium alloys have mechanical strengths comparable to steels, as well as high corrosion resistance. Also, they have the advantage of promoting osseointegration, when used in medical and dental implants. This work aims to describe the adhesion properties of fibroblast and osteoblast cells on the surface of titanium aluminum vanadium alloy (Ti6Al4V). Three different conditions of the surface were investigated: smooth, rough and covered with diamond film. Conventional material characterizations were performed to the film which consisted in: Morphological visualization by scanning electron microscopy, confocal profilometry, X-ray diffraction pattern, Raman backscattering spectroscopy and atomic force microscopy. Biocompatibility tests of Ti6Al4V were performed using primary human fibroblasts and mouse pre-osteoblasts cell line MC3T3-E1. Overall, diamond films deposited on Ti6Al4V showed interesting results of uniformity and protection against cracks on to the surface, reasonable biocompatibility features if compared to uncovered ones, indicating that this film is an alternative for using in health care applications.
DOI: 10.6084/m9.figshare.6151910.v1
title: Fibroblast and pre-osteoblast cell adhesive behavior on titanium alloy coated with diamond film

description: It is well known that titanium alloys have mechanical strengths comparable to steels, as well as high corrosion resistance. Also, they have the advantage of promoting osseointegration, when used in medical and dental implants. This work aims to describe the adhesion properties of fibroblast and osteoblast cells on the surface of titanium aluminum vanadium alloy (Ti6Al4V). Three different conditions of the surface were investigated: smooth, rough and covered with diamond film. Conventional material characterizations were performed to the film which consisted in: Morphological visualization by scanning electron microscopy, confocal profilometry, X-ray diffraction pattern, Raman backscattering spectroscopy and atomic force microscopy. Biocompatibility tests of Ti6Al4V were performed using primary human fibroblasts and mouse pre-osteoblasts cell line MC3T3-E1. Overall, diamond films deposited on Ti6Al4V showed interesting results of uniformity and protection against cracks on to the surface, reasonable biocompatibility features if compared to uncovered ones, indicating that this film is an alternative for using in health care applications.
DOI: 10.6084/m9.figshare.6151907
title: White Bear Suppression Inventory: translation and cross-cultural adaptation to Brazilian Portuguese

description: Abstract Introduction Intrusive thoughts may cause a significant level of distress, since some individuals evaluate the content of those thoughts as aversive. Suppression of intrusive thoughts is one of the strategies adopted by these individuals, which increases the level of distress. Suppression of thoughts may be present as one of the factors that maintain different psychological disorders. Objective To describe the translation and adaptation into Brazilian Portuguese of the White Bear Suppression Inventory (WBSI), which measures thought suppression. Methods Three translations and back-translations were conducted by independent evaluators. Semantic equivalence was assessed and the three versions were evaluated to produce a synthesized version. Comments from participants on the preliminary version of the questionnaire were examined. Results We developed a preliminary Brazilian Portuguese version of the WBSI. It was found that most participants understood the descriptions of cognitions given in the translated questionnaire. Conclusion The use of three different versions of translations and back-translations, discussion of the synthetic version and interaction with the target population have conferred viability to the process of semantic equivalence of the Brazilian Portuguese final version of the WBSI.
DOI: 10.6084/m9.figshare.6151907.v1
title: White Bear Suppression Inventory: translation and cross-cultural adaptation to Brazilian Portuguese

description: Abstract Introduction Intrusive thoughts may cause a significant level of distress, since some individuals evaluate the content of those thoughts as aversive. Suppression of intrusive thoughts is one of the strategies adopted by these individuals, which increases the level of distress. Suppression of thoughts may be present as one of the factors that maintain different psychological disorders. Objective To describe the translation and adaptation into Brazilian Portuguese of the White Bear Suppression Inventory (WBSI), which measures thought suppression. Methods Three translations and back-translations were conducted by independent evaluators. Semantic equivalence was assessed and the three versions were evaluated to produce a synthesized version. Comments from participants on the preliminary version of the questionnaire were examined. Results We developed a preliminary Brazilian Portuguese version of the WBSI. It was found that most participants understood the descriptions of cognitions given in the translated questionnaire. Conclusion The use of three different versions of translations and back-translations, discussion of the synthetic version and interaction with the target population have conferred viability to the process of semantic equivalence of the Brazilian Portuguese final version of the WBSI.
DOI: 10.6084/m9.figshare.6151904
title: Writing and authorship in scientific initiation text in elementary education: is it possible to have another relationship with knowledge?

description: Abstract This article gathers thoughts about interdisciplinary work, connected in a pedagogical practice of scientific initiation on the elementary school area. Acknowledging the school as a learning construction space, teachers and students can assign other senses for the schooling institution, giving a new meaning to their own places. Reinforced with internet’s advent, the act of copy and paste has contributed for the formation of subjects, in the words of Freire, more like spectators of the world than recreators. Thus, we grasp the task of searching as a fundamental activity on the formation of the critic, reflexive, creative student: subject-author. By working with theoretical and methodological approach of the French Discourse Analysis and the critic perspective of Science, Technology and Society Education, we seek reflections about another possibility of relationship between school/student/teacher/knowledge, that points towards a bigger school’s identification with the emancipatory scientific formation.
DOI: 10.6084/m9.figshare.6151904.v1
title: Writing and authorship in scientific initiation text in elementary education: is it possible to have another relationship with knowledge?

description: Abstract This article gathers thoughts about interdisciplinary work, connected in a pedagogical practice of scientific initiation on the elementary school area. Acknowledging the school as a learning construction space, teachers and students can assign other senses for the schooling institution, giving a new meaning to their own places. Reinforced with internet’s advent, the act of copy and paste has contributed for the formation of subjects, in the words of Freire, more like spectators of the world than recreators. Thus, we grasp the task of searching as a fundamental activity on the formation of the critic, reflexive, creative student: subject-author. By working with theoretical and methodological approach of the French Discourse Analysis and the critic perspective of Science, Technology and Society Education, we seek reflections about another possibility of relationship between school/student/teacher/knowledge, that points towards a bigger school’s identification with the emancipatory scientific formation.