Karl Fischer
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Estudo termodinamico do equilibrio liquido-liquido visando a remoção do enxofre do oleo diesel com liquidos ionicos / Thermodynamic study of liquid-liquid equilibrium aiming sulfur removal by using ionic liquids
The sulfur contaminants more difficult to remove from diesel oil by hydrodesulfuration process (HDS) are the sterically hindered aromatic compounds, like dibenzothiophene (DBT), and its alkylated derivatives 4-methyl-dibenzothiophene (4-MDBT) and 4,6-dimethyl-dibenzothiophene (4,6-DMDBT), commonly called DBTs. Increasing the number of methyl groups attached
Publicado em: 2009
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14. Estudo do bloqueio pleural bilateral em analgesia pós-operatória de cirurgias abdominais de urgência por via mediana
Com o objetivo de determinar uma alternativa aos opióides, avaliou-se a analgesia pós-operatória (APO) em laparotomias de urgência com incisão mediana, pela anestesia regional (AR). Seu representante foi o bloqueio pleural bilateral (BPB) com a bupivacaína® (bp), um anestésico local (AL) de ação prolongada. Durante o estudo, realizado em 25 pacient
Publicado em: 2008
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15. Liquid-liquid equilibrium in nicotine + water + extractant systems / Equilibrio liquido-liquido em sistemas nicotina + agua + extratante
A principal fonte do alcalóide nicotina (C10H14N2) é o tabaco (Nicotiana Tabacum), matéria-prima fundamental na indústria do fumo para a fabricação de cigarros. Este processo produz como resíduo uma solução aquosa extremamente rica em nicotina e altamente tóxica, que pode ser tratada por meio da extração líquida da nicotina usando um agente extr
Publicado em: 2005
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16. Preparo, caracterização e avaliação funcional de microcapsulas obtidas por spray drying, contendo extrato de cafe crioconcentrado. / Preparation, charaction and funcional evaluation of microcapsules obtained by spray drying, containing cryoconcentrated coffee extract.
Microencapsulation using spray dryer has been widely used in food industry, seeking core protection. Nowadays, the gum arabic and maltodextrin have been used as wall material, but cashew gum was still not studied as a microcapsule for this purpose. This way, the objective of this work was studied the volatile retention of coffee extract during microencapsula
Publicado em: 2004
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17. Utilização de índices r e R obtidos de programas interlaboratoriais para o controle de precisão de método analítico: Determinação de água por Karl Fischer
Values of repeatability (r) and reproducibility (R) are parameters of an analytical method. They are related to the maximum difference between two results of analysis (permissible range) and can be obtained by interlaboratorial comparisons. They represent great importance for the quality control of the results and decisions about the fitness-for-purpose of t
Química Nova. Publicado em: 2002-07
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18. Secagem de particulado coesivo em secador de leito fluidizado agitado
The experimental work and study, now being considered, were carried out for the purpose of verifying the feasibility of usefulness of an agitated fluidized bed in the drying process of a particulate organic acid. Firstly, it was conducted a series of experiments in order to understand the influence of agitation on the hydrodynamics of fluidized beds, utilizi
Publicado em: 1999
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19. The Water Content of Maple Stems. I. Application of the Karl Fischer Method for the Analyses of Water in Maple Bark and Wood. 12
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20. The protective effect of lactose on lyophilization of CNK-20402
The goal of this research was to assess the feasibility of using lyophilization to stabilize an exploratory compound, CNK-20402, with a minimal amount of impurity (CNK-20193) formation. A mixed-level full factorial experimental design was used to screen excipients of glycine, mannitol, lactose monohydrate, and povidone K-12. Cryostage microscopy, powder X-ra
Springer-Verlag.