It aims to investigate the history of a university publisher, based on the bibliographic data of ... more It aims to investigate the history of a university publisher, based on the bibliographic data of its books. It is characterized as an exploratory research, of a qualitative nature: documentary research for data collection and use of the principles concerning the grounded theory and the big data for data analysis. The analyzed aspects were organized in the dimensions: volume, diversity and quality, the intersection of these axes made it possible to characterize the Editora UFPB time line, where the following historical periods are observed: 1962 to 1975 - University Press of Paraíba; 1975 to 1981 - Press to publisher; 1981 to 1993 - Great recession; 1993 to 2001 - The return; 2001 to 2009 - Book Syndrome Ready; 2009 to 2014 - Phoenix. It is known that the volume of data analyzed was not enough to draw a definitive picture, the evaluation of new datasets could lead to new paths, enabling the discovery of new knowledge from the grounded theory.
O presente trabalho e parte do projeto: “Educacao Patrimonial no Municipio de Itaara, RS: Resgate... more O presente trabalho e parte do projeto: “Educacao Patrimonial no Municipio de Itaara, RS: Resgate do Patrimonio Cultural e insercao do tema no curriculo escolar”, que foi uma solicitacao da Prefeitura do municipio de Itaara, implementado partir de junho do ano de 2006, atraves de um convenio entre a Universidade Federal de Santa Maria e a Prefeitura Municipal de Itaara. O municipio de Itaara emancipou-se de Santa Maria no ano de 1997, e entre os principais antecedentes historicos do municipio podemos citar: A chegada de Imigrantes alemaes em meados do Seculo XIX e a Estacao Pinhal da viacao ferrea, referente ao final do seculo XIX. O Assentamento dos imigrantes na Fazenda Philippson no inicio do seculo XX que e um marco da colonizacao judaica no Estado.
How to develop research, through the simplification method, in a reality of greater complexity, i... more How to develop research, through the simplification method, in a reality of greater complexity, interconnection and globalization? The technological advancement that promotes an increasingly complex and globalized world also makes obsolete the research techniques that disqualify the intrinsic qualities of the studied objects or that reduce the complexity in order to compromise their own understanding (Santos, 2008). It is not yet possible to determine the real value of the analyzes through the "big data", but this typology of data analysis challenges us to understand the phenomena in their singularity and their complexity, providing a new look at the objects of research. It will not be the "big data" the great "solver" of our research methods; it only leads us to places ahead of those which have been achieved by methods of the past which, at the same time, will be the places to be surpassed by the methods of the future.
Waterborne polyurethanes (WPUs) present interesting properties when compared to their solvent-bas... more Waterborne polyurethanes (WPUs) present interesting properties when compared to their solvent-based counterpart besides being organic solvent free. WPUs also present some drawbacks such as low thermal and mechanical properties. The goal of this work was to synthesize and characterize new synthetic talc in a gel form with different magnesium (Mg) and nickel (Ni) ratios in their chemical structure Si 4 (Mg x Ni 1−x) 3 O 10 (OH) 2 with 0 < x < 1 and to evaluate their influence on mechanical and thermal properties when used as filler in WPU matrix in order to obtain new nanocomposites as well. WPU/STMg x Ni y nanocomposites were prepared by physical mixing and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), atomic force microscopy (AFM) and mechanical dynamic analysis (DMTA). Improvements in nanocomposites mechanical properties in relation to pristine WPU matrix were observed for samples with higher synthetic talc content. The variation of the amount of Mg and Ni in synthetic talc composition altered the storage and loss modules results being higher for nanocomposites obtained with synthetic talc samples with higher Ni content in their compositions. Tg varied according to synthetic talc content. Synthetic talc with different metal content in their composition changes WPU nanocomposites thermal and mechanical properties. These fillers can be used to design nanocomposites with desired applications.
Resumo O trabalho consiste na elaboração e construção de uma ferramenta capaz de capturar um obje... more Resumo O trabalho consiste na elaboração e construção de uma ferramenta capaz de capturar um objeto e fazer o seu transporte através de um drone. Esta ferramenta foi projetada com o uso do software AutoCAD e impressa em ABS por uma impressora 3D. Através da placa microcontroladora Arduino NANO e um acelerômetro, realiza-se o movimento de pega de objeto em pleno voo, com o auxílio de um servo motor, para futura aplicação em drone.
As a non-swelling clay, talc generally interacts very weakly with organic molecules. However, two... more As a non-swelling clay, talc generally interacts very weakly with organic molecules. However, two new nanometric synthetic talcs that incorporate berberine chloride were successfully used as fluorescent fillers in clay polyurethane nanocomposites obtained by the blending method. A micrometric natural talc filler was also used for comparison. The clay polymer nanocomposites (CPN) were characterized by FTIR, molar mass analysis and XRD. All talc fillers were well dispersed into the polyurethane matrix even at high filler content of 5 wt%, as supported by TEM and SEM analyses. Morphological changes were confirmed by AFM. The optical properties of the fluorescent talcs, dye-doped polymer and CPN were compared. While the dye-doped polymer suffered from conventional fluorescence quenching due to dye aggregation, the emission quantum yield of the CPN was increased with increasing the filler content. The best emission efficiency was observed for the CPN that contains the smallest talc-berberine hybrid particles. The use of fluorescent synthetic talc resulted in materials with good thermal and mechanical properties, and can be considered as a new method to produce fluorescent CPN in view of multiple applications.
This work presents the syntheses of PU nanocomposites, by in situ polymerization technique, using... more This work presents the syntheses of PU nanocomposites, by in situ polymerization technique, using different synthetic talcs as inorganic filler. The fillers were obtained from two different hydrothermal treatments and composition (talc-Mg and talc-Ni). For nanocomposites syntheses 3% w/w of synthetic talc were added related to the weight of pure polymer. Samples were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) to understand the influence of the fillers syntheses and composition in morphological and thermal properties of the obtained nanocomposites. When talc-Ni was used as filler, the resulting nanocomposite was intercalated while with talc-Mg was exfoliated into the polyurethane matrix. Both fillers have increased the thermal properties of the polymer, but the exfoliated nanocomposite provided higher thermal stability.
Resumo Este trabalho visa contribuir com uma discussão, ao mesmo tempo em voga e premente, do pat... more Resumo Este trabalho visa contribuir com uma discussão, ao mesmo tempo em voga e premente, do patrimônio e seu lugar na Gestão Integrada do Território como elemento desencadeador de desenvolvimento social, articulado à exploração econômica como forma de geração de emprego, trabalho e renda, bem como sua relação com o ambiente, a partir de um estudo de caso no Rio Grande do Sul. Ainda, propõe-se a discutir como uma ação de valorização dos bens culturais devem passar por uma ação integrada de ação-reflexão-reação, que aqui se denomina práxis educativa para o patrimônio. Palavras-chave: educação patrimonial, patrimônio, práxis educativa.
New synthetic Ni-talc was used as filler in the synthesis of polyurethane (PU) nanocomposites by ... more New synthetic Ni-talc was used as filler in the synthesis of polyurethane (PU) nanocomposites by in situ polymerization and to emphasize the contribution of the new material compared with natural talc. Good dispersion of Ni-talc was supported by homogeneous green coloration observed in the polymer matrix. X-ray diffraction (XRD) analyses indicate the intercalation of polymeric matrix into the filler layers by the increase in d 001-spacing value of the Ni-talc for the nanocomposites when compared to the pristine filler. The nanocomposites obtained with synthetic talc showed an improvement in the crystallization temperature and in thermal stability when compared to pure PU and the composite obtained with natural talc. The young modulus of PU/talc materials containing both Ni-talc and natural talc were slight higher than pure PU. As shown by scanning electron microscope (SEM), Ni-talc fillers were well dispersed into the polymeric matrix probably due to the good compatibility of both phases filler/polymer mainly achieved by the filler OH interaction with the urethane group of the polymeric chain.
It aims to investigate the history of a university publisher, based on the bibliographic data of ... more It aims to investigate the history of a university publisher, based on the bibliographic data of its books. It is characterized as an exploratory research, of a qualitative nature: documentary research for data collection and use of the principles concerning the grounded theory and the big data for data analysis. The analyzed aspects were organized in the dimensions: volume, diversity and quality, the intersection of these axes made it possible to characterize the Editora UFPB time line, where the following historical periods are observed: 1962 to 1975 - University Press of Paraíba; 1975 to 1981 - Press to publisher; 1981 to 1993 - Great recession; 1993 to 2001 - The return; 2001 to 2009 - Book Syndrome Ready; 2009 to 2014 - Phoenix. It is known that the volume of data analyzed was not enough to draw a definitive picture, the evaluation of new datasets could lead to new paths, enabling the discovery of new knowledge from the grounded theory.
O presente trabalho e parte do projeto: “Educacao Patrimonial no Municipio de Itaara, RS: Resgate... more O presente trabalho e parte do projeto: “Educacao Patrimonial no Municipio de Itaara, RS: Resgate do Patrimonio Cultural e insercao do tema no curriculo escolar”, que foi uma solicitacao da Prefeitura do municipio de Itaara, implementado partir de junho do ano de 2006, atraves de um convenio entre a Universidade Federal de Santa Maria e a Prefeitura Municipal de Itaara. O municipio de Itaara emancipou-se de Santa Maria no ano de 1997, e entre os principais antecedentes historicos do municipio podemos citar: A chegada de Imigrantes alemaes em meados do Seculo XIX e a Estacao Pinhal da viacao ferrea, referente ao final do seculo XIX. O Assentamento dos imigrantes na Fazenda Philippson no inicio do seculo XX que e um marco da colonizacao judaica no Estado.
How to develop research, through the simplification method, in a reality of greater complexity, i... more How to develop research, through the simplification method, in a reality of greater complexity, interconnection and globalization? The technological advancement that promotes an increasingly complex and globalized world also makes obsolete the research techniques that disqualify the intrinsic qualities of the studied objects or that reduce the complexity in order to compromise their own understanding (Santos, 2008). It is not yet possible to determine the real value of the analyzes through the "big data", but this typology of data analysis challenges us to understand the phenomena in their singularity and their complexity, providing a new look at the objects of research. It will not be the "big data" the great "solver" of our research methods; it only leads us to places ahead of those which have been achieved by methods of the past which, at the same time, will be the places to be surpassed by the methods of the future.
Waterborne polyurethanes (WPUs) present interesting properties when compared to their solvent-bas... more Waterborne polyurethanes (WPUs) present interesting properties when compared to their solvent-based counterpart besides being organic solvent free. WPUs also present some drawbacks such as low thermal and mechanical properties. The goal of this work was to synthesize and characterize new synthetic talc in a gel form with different magnesium (Mg) and nickel (Ni) ratios in their chemical structure Si 4 (Mg x Ni 1−x) 3 O 10 (OH) 2 with 0 < x < 1 and to evaluate their influence on mechanical and thermal properties when used as filler in WPU matrix in order to obtain new nanocomposites as well. WPU/STMg x Ni y nanocomposites were prepared by physical mixing and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), atomic force microscopy (AFM) and mechanical dynamic analysis (DMTA). Improvements in nanocomposites mechanical properties in relation to pristine WPU matrix were observed for samples with higher synthetic talc content. The variation of the amount of Mg and Ni in synthetic talc composition altered the storage and loss modules results being higher for nanocomposites obtained with synthetic talc samples with higher Ni content in their compositions. Tg varied according to synthetic talc content. Synthetic talc with different metal content in their composition changes WPU nanocomposites thermal and mechanical properties. These fillers can be used to design nanocomposites with desired applications.
Resumo O trabalho consiste na elaboração e construção de uma ferramenta capaz de capturar um obje... more Resumo O trabalho consiste na elaboração e construção de uma ferramenta capaz de capturar um objeto e fazer o seu transporte através de um drone. Esta ferramenta foi projetada com o uso do software AutoCAD e impressa em ABS por uma impressora 3D. Através da placa microcontroladora Arduino NANO e um acelerômetro, realiza-se o movimento de pega de objeto em pleno voo, com o auxílio de um servo motor, para futura aplicação em drone.
As a non-swelling clay, talc generally interacts very weakly with organic molecules. However, two... more As a non-swelling clay, talc generally interacts very weakly with organic molecules. However, two new nanometric synthetic talcs that incorporate berberine chloride were successfully used as fluorescent fillers in clay polyurethane nanocomposites obtained by the blending method. A micrometric natural talc filler was also used for comparison. The clay polymer nanocomposites (CPN) were characterized by FTIR, molar mass analysis and XRD. All talc fillers were well dispersed into the polyurethane matrix even at high filler content of 5 wt%, as supported by TEM and SEM analyses. Morphological changes were confirmed by AFM. The optical properties of the fluorescent talcs, dye-doped polymer and CPN were compared. While the dye-doped polymer suffered from conventional fluorescence quenching due to dye aggregation, the emission quantum yield of the CPN was increased with increasing the filler content. The best emission efficiency was observed for the CPN that contains the smallest talc-berberine hybrid particles. The use of fluorescent synthetic talc resulted in materials with good thermal and mechanical properties, and can be considered as a new method to produce fluorescent CPN in view of multiple applications.
This work presents the syntheses of PU nanocomposites, by in situ polymerization technique, using... more This work presents the syntheses of PU nanocomposites, by in situ polymerization technique, using different synthetic talcs as inorganic filler. The fillers were obtained from two different hydrothermal treatments and composition (talc-Mg and talc-Ni). For nanocomposites syntheses 3% w/w of synthetic talc were added related to the weight of pure polymer. Samples were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) to understand the influence of the fillers syntheses and composition in morphological and thermal properties of the obtained nanocomposites. When talc-Ni was used as filler, the resulting nanocomposite was intercalated while with talc-Mg was exfoliated into the polyurethane matrix. Both fillers have increased the thermal properties of the polymer, but the exfoliated nanocomposite provided higher thermal stability.
Resumo Este trabalho visa contribuir com uma discussão, ao mesmo tempo em voga e premente, do pat... more Resumo Este trabalho visa contribuir com uma discussão, ao mesmo tempo em voga e premente, do patrimônio e seu lugar na Gestão Integrada do Território como elemento desencadeador de desenvolvimento social, articulado à exploração econômica como forma de geração de emprego, trabalho e renda, bem como sua relação com o ambiente, a partir de um estudo de caso no Rio Grande do Sul. Ainda, propõe-se a discutir como uma ação de valorização dos bens culturais devem passar por uma ação integrada de ação-reflexão-reação, que aqui se denomina práxis educativa para o patrimônio. Palavras-chave: educação patrimonial, patrimônio, práxis educativa.
New synthetic Ni-talc was used as filler in the synthesis of polyurethane (PU) nanocomposites by ... more New synthetic Ni-talc was used as filler in the synthesis of polyurethane (PU) nanocomposites by in situ polymerization and to emphasize the contribution of the new material compared with natural talc. Good dispersion of Ni-talc was supported by homogeneous green coloration observed in the polymer matrix. X-ray diffraction (XRD) analyses indicate the intercalation of polymeric matrix into the filler layers by the increase in d 001-spacing value of the Ni-talc for the nanocomposites when compared to the pristine filler. The nanocomposites obtained with synthetic talc showed an improvement in the crystallization temperature and in thermal stability when compared to pure PU and the composite obtained with natural talc. The young modulus of PU/talc materials containing both Ni-talc and natural talc were slight higher than pure PU. As shown by scanning electron microscope (SEM), Ni-talc fillers were well dispersed into the polymeric matrix probably due to the good compatibility of both phases filler/polymer mainly achieved by the filler OH interaction with the urethane group of the polymeric chain.
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