In this work, an axisymmetric two-dimensional finite element model was developed to simulate inst... more In this work, an axisymmetric two-dimensional finite element model was developed to simulate instrumented indentation testing of thin ceramic films deposited onto hard steel substrates. The level of film residual stress (σr), the film elastic modulus (E) and the film work hardening exponent (n) were varied to analyze their effects on indentation data. These numerical results were used to analyze
In this work, the applicability of a new algorithm for the estimation of mechanical properties fr... more In this work, the applicability of a new algorithm for the estimation of mechanical properties from instrumented indentation data was studied for thin films. The applicability was analyzed with the aid of both three-dimensional finite element simulations and experimental indentation tests. The numerical approach allowed studying the effect of the substrate on the estimation of mechanical properties of the film,
Palladium(II) compounds dissolved in 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMI·BF 4 ) ... more Palladium(II) compounds dissolved in 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMI·BF 4 ) ionic liquid are shown to be able to catalyze the hydrodimerization of 1,3-butadiene. In most of the cases, only the 1,3-butadiene dimer 1,3,6-octatriene and the telomer octa-2,7-dien-...
Transactions of the Royal Society of Tropical Medicine and Hygiene, 2010
This study used a PCR-RFLP test to determine the presence of Leishmania (Leishmania) chagasi in 1... more This study used a PCR-RFLP test to determine the presence of Leishmania (Leishmania) chagasi in 16 captive wild felids [seven Puma concolor (Linnaeus, 1771); five Panthera onca (Linnaeus, 1758) and four Leopardus pardalis (Linnaeus, 1758)] at the zoological park of the Federal University of Mato Grosso, Brazil. Amplification of Leishmania spp. DNA was seen in samples from five pumas and one jaguar, and the species was characterized as L. chagasi using restriction enzymes. It is already known that domestic felids can act as a reservoir of L. chagasi in endemic areas, and further studies are necessary to investigate their participation in the epidemiological chain of leishmaniasis.
1,2-Diiminophosphoranes 14 featuring either ethane, benzene, cyclohexane or 1,2-diphenylethane c... more 1,2-Diiminophosphoranes 14 featuring either ethane, benzene, cyclohexane or 1,2-diphenylethane carbon backbones act as tightly bonded 1,4-chelating ligands towards NiCl 2 , affording the corresponding paramagnetic complexes 58 in high yield. X-Ray diffraction studies performed on ...
... a, Instituto de Quı´mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 950... more ... a, Instituto de Quı´mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, Brazil. b, Instituto de Quı´mica, Universidade Estadual de Campinas, CP 6154, Campinas 13083-970, Brazil. ...
... used to produce rectangular bars (4x3x60mm). Both were compacted in a uniaxialpress at 70MPa ... more ... used to produce rectangular bars (4x3x60mm). Both were compacted in a uniaxialpress at 70MPa and sintered at 1550°C for 2h The ALCOA alumina is a conventional alumina powder. The EPUSP alumina is a experimental ...
In this work, an axisymmetric two-dimensional finite element model was developed to simulate inst... more In this work, an axisymmetric two-dimensional finite element model was developed to simulate instrumented indentation testing of thin ceramic films deposited onto hard steel substrates. The level of film residual stress (σr), the film elastic modulus (E) and the film work hardening exponent (n) were varied to analyze their effects on indentation data. These numerical results were used to analyze
In this work, the applicability of a new algorithm for the estimation of mechanical properties fr... more In this work, the applicability of a new algorithm for the estimation of mechanical properties from instrumented indentation data was studied for thin films. The applicability was analyzed with the aid of both three-dimensional finite element simulations and experimental indentation tests. The numerical approach allowed studying the effect of the substrate on the estimation of mechanical properties of the film,
Palladium(II) compounds dissolved in 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMI·BF 4 ) ... more Palladium(II) compounds dissolved in 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMI·BF 4 ) ionic liquid are shown to be able to catalyze the hydrodimerization of 1,3-butadiene. In most of the cases, only the 1,3-butadiene dimer 1,3,6-octatriene and the telomer octa-2,7-dien-...
Transactions of the Royal Society of Tropical Medicine and Hygiene, 2010
This study used a PCR-RFLP test to determine the presence of Leishmania (Leishmania) chagasi in 1... more This study used a PCR-RFLP test to determine the presence of Leishmania (Leishmania) chagasi in 16 captive wild felids [seven Puma concolor (Linnaeus, 1771); five Panthera onca (Linnaeus, 1758) and four Leopardus pardalis (Linnaeus, 1758)] at the zoological park of the Federal University of Mato Grosso, Brazil. Amplification of Leishmania spp. DNA was seen in samples from five pumas and one jaguar, and the species was characterized as L. chagasi using restriction enzymes. It is already known that domestic felids can act as a reservoir of L. chagasi in endemic areas, and further studies are necessary to investigate their participation in the epidemiological chain of leishmaniasis.
1,2-Diiminophosphoranes 14 featuring either ethane, benzene, cyclohexane or 1,2-diphenylethane c... more 1,2-Diiminophosphoranes 14 featuring either ethane, benzene, cyclohexane or 1,2-diphenylethane carbon backbones act as tightly bonded 1,4-chelating ligands towards NiCl 2 , affording the corresponding paramagnetic complexes 58 in high yield. X-Ray diffraction studies performed on ...
... a, Instituto de Quı´mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 950... more ... a, Instituto de Quı´mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, Brazil. b, Instituto de Quı´mica, Universidade Estadual de Campinas, CP 6154, Campinas 13083-970, Brazil. ...
... used to produce rectangular bars (4x3x60mm). Both were compacted in a uniaxialpress at 70MPa ... more ... used to produce rectangular bars (4x3x60mm). Both were compacted in a uniaxialpress at 70MPa and sintered at 1550°C for 2h The ALCOA alumina is a conventional alumina powder. The EPUSP alumina is a experimental ...
Uploads
Papers by Roberto souza