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Reagente de biureto como ferramenta forense para detecção de sêmen simulado
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de Engenharia QuímicaEngenharia QuímicaUTFPR, 2019-11-29)
Given the various existing forensic methods, we seek to analyze the biuret reagent as a forensic tool that can circumvent the known false positives and negatives of traditional methods. The biuret reagent has a characteristic ...
Estudo da viabilidade de alguns reagentes na revelação da microestrutura de uma liga nitinol de concentração equiatômica por meio de ataque químico e eletrolítico
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia de MateriaisUTFPR, 2016-10-31)
NiTi alloys demonstrate high corrosion resistance due to the formation of a passive layer on the surface of the alloy composed mainly of TiO2. This property imposes a barrier to reveal the microstructure of Niti alloys. ...
Validação de método de dissolução com quantificação por HPLC de cápsulas de cloridrato de tramadol com e sem adição de enzima
(Universidade Tecnológica Federal do ParanáToledoBrasilAnálise InstrumentalUTFPR, 2019-06-03)
The present study approaches the validation of a high performance liquid chromatography quantification analytical method developed by a pharmaceutical company from western Paraná for the dissolution test of tramadol ...
Reagent generation for chemical analysis assisted by ultrasonic irradiation
(Elsevier, 2004)
Few methods, such as coulometrics, have been developed to produce reagents in situ for analytical purposes. In this work the
concept related to the generation of ultrasound-assisted reagents was exploited to yield oxidizing ...
Effect of protein-modifying reagents on ecto-apyrase from rat brain
(PERGAMON-ELSEVIER SCIENCE LTD, 2000-01)
We have tested several chemical modifiers to investigate which amino acid residues, present in the primary structure of the ecto-apyrase, could be involved in catalysis. Synaptosomes from cerebral cortex of rats were ...
Influence of aged Ti-15V-3Cr-3Sn-3Al alloy microstructure on chemical and electrochemical behavior in the Kroll reagent for metallographic etching
(Carl Hanser Verlag, 2003-01-01)
The chemical and electrochemical behaviour of the Ti-1 5V-3Cr-3Sn-3Al alloy in Kroll reagent has been studied after ageing at 350-600degreesC, to optimise metallographic etching. Etching tests and polarisation curves showed ...
Influence of aged Ti-15V-3Cr-3Sn-3Al alloy microstructure on chemical and electrochemical behavior in the Kroll reagent for metallographic etching
(Carl Hanser Verlag, 2003-01-01)
The chemical and electrochemical behaviour of the Ti-1 5V-3Cr-3Sn-3Al alloy in Kroll reagent has been studied after ageing at 350-600degreesC, to optimise metallographic etching. Etching tests and polarisation curves showed ...
Avaliação de erva-mate para chimarrão (Ilex paraguariensis St. Hil.) por métodos instrumentais e quimiometria
(Universidade Tecnológica Federal do ParanáCampo MouraoMedianeiraBrasilPrograma de Pós-Graduação em Tecnologia de AlimentosUTFPR, 2018-02-26)
The cultivation practices and harvesting and post-harvest steps of yerba mate are conducted by different methods depending on the region, factors that, as well as types of herbs (native or reforested) and genetic and ...
Inibição da contagem de Salmonella Typhimurium em água pela aplicação de ultrassom e agentes químicos
(Universidade Tecnológica Federal do ParanáMedianeiraBrasilTecnologia em AlimentosUTFPR, 2018-11-29)
Salmonella sp. is considered one of the pathogens more important of higher virulence and prevalence in the cases of infections of food origin worldwide. Therefore, the food industry applies heat treatments for inactivation. ...
Efeito do ultrassom e dióxido de cloro (ClO2) na redução de enterobactérias no tanque de resfriamento de carcaças de aves
(Universidade Tecnológica Federal do ParanáMedianeiraBrasilPrograma de Pós-Graduação em Tecnologia de AlimentosUTFPR, 2020-08-24)
Ultrasound has been evidence as an innovative technology capable of safely inhibiting and/or reducing the growth of microorganisms and when combined with chemical compounds, it reduces reduces the use of these. Thus, the ...