Lser
Mostrando 1-12 de 17 artigos, teses e dissertações.
-
1. Liquid-liquid extraction equilibrium for pyruvic acid recovery: experimental data and modeling
ABSTRACT Physical extraction studies of pyruvic acid from dilute aqueous solutions (0.025 kmol·m-3 to 0.200 kmol·m-3) using several pure solvents (tri-n-butylphosphate (TBP), 1-decanol, 1-octanol, toluene, Methyl-isobutylketone (MIBK), and n-heptane) and their binary mixtures are reported in this work. All the batch extraction experiments were carried out
Braz. J. Chem. Eng.. Publicado em: 2017-07
-
2. Aplicação das relações lineares de energia livre de solvatação (LSER) ao estudo de sistemas interfaciais organizados / Application of linear solvation energy relationships (LSER) to the study of organized interfacial systems
Neste estudo foi caracterizado o processo de solubilização de solutos neutros em sistemas micelares compostos de surfactantes não iônicos da família de alcoóis secundários etoxilados com o mesmo grupo hidrofóbico e graus diferentes de etoxilação, variando de 5 a 30 subunidades de oxido de etileno. Para isso, foram utilizadas as Relações Lineares
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2011
-
3. Estudo da microcirculação na hanseníase virchowiana com o uso da microscopia de luz ortogonal polarizada e com laser-doppler fluxometria / Microcirculation s research in leprosy with orthogonal polarization special imaging and laser doppler
Leprosy is an infectious disease with unique characteristics. One of them is the fact that it compromises not only the cutaneous and adnexial innervation, but also the innervation of the cutaneous microcirculation. Several articles indicate the impact of disautonomy on the microcirculatory level, citing the example of changes in vasomotor level. The present
Publicado em: 2010
-
4. Efeitos da administração intraestriatal aguda de ácido quinolítico sobre o citoesqueleto de células neurais de ratos
In the present study we investigated the effect of in vivo intrastriatal injection of quinolinic acid (QA) on rat cytoskeleton proteins in astrocytes and neurons of young rats at early stages (30 min) after infusion. Intrastriatal QA injection is an excitotoxic model of Huntington´s Disease (HD). Results showed that QA (150¿mol/0.5¿L) significantly increa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
-
5. The influence of ethoxylation degree in the behaviour of secondary alcohol ethoxylates / Influência do grau de etoxilação no comportamento de álcoois secunários etoxilados
The solubilization of non-ionic solutes via partitioning between water and the micellar pseudophase of non-ionic surfactants was evaluated for a series of secondary alcohol ethoxylates with hydrophile length varying from 7 to 40 ethylene oxide units. It was demonstrated that the micellar incorporation constant, Ks, is not dependent on the hydrophile length o
Publicado em: 2009
-
6. Extracion of citric acid in 2-octanol and 2-propanol solutions containing tomac: an equilibria and a LSER model
Studies on the extraction of citric acid by TOMAC (trioctyl methyl ammonium chloride) dissolved in 2-propanol and 2-octanol (active solvents) and their mixture (1 : 1 volume ratio) are reported. Experimental results of batch extraction experiments are calculated and reported for partitioning coefficients (D), loading factors (Z), and extraction efficiency (E
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
-
7. Estudos fundamentais e aplicações envolvendo hormônios esteróides por meio de eletroforese capilar / Fundamental study and applications involving steroids hormones by capillary electrophoresis
In the first chapter of this work, the classification and importance of the sexual steroids for maintenance of the life human is presented. The next chapter presents general aspects on capillary electrophoresis, such as operation, terminology and considerations on the electroosmotic flow and electroforetic mobility. The third chapter shows a study of interac
Publicado em: 2008
-
8. A linear solvation energy relationship to predict vapor pressure from molecular structure
Pressões de vapor de líquidos orgânicos (em Pa a 298 K) correlacionam (R² = 0.986) segundo a relação: log Pvap = 7.86 - 3.54 V - 1.17 E - 1.52 (S + lambda) - 3.64 (eta × A × B) sendo V, E, S, A, e B parâmetros empíricos para o volume molar, o índice de refração em excesso, a dipolaridade/polarizabilidade e a capacidade doadora e receptora de pon
Journal of the Brazilian Chemical Society. Publicado em: 2005-10
-
9. Incorporação de solutos não iônicos em micelas de alquil óxido de difenila dissulfonados / Incorporation of non ionic solutes in alkyl diphenyloxide disulfonate micelles
The solubilization of non ionic molecules in detergent micelles is a property that has been extensively investigated and that is of great practical importance. Several applications in which solubilization is of relevance are detergency, remediation of contaminated soils and catalysis. In earlier work, the group of Prof. Quina has shown that linear free energ
Publicado em: 2003
-
10. l-Serine and glycine serve as major astroglia-derived trophic factors for cerebellar Purkinje neurons
Glial cells support the survival and development of central neurons through the supply of trophic factors. Here we demonstrate that l-serine (l-Ser) and glycine (Gly) also are glia-derived trophic factors. These amino acids are released by astroglial cells and promote the survival, dendritogenesis, and electrophysiological development of cultured cerebe
The National Academy of Sciences.
-
11. A novel assay method for an amino acid racemase reaction based on circular dichroism
We have established a novel assay method based on circular dichroism that can be used for the kinetic study of the activity of amino acid racemases, such as ALR (alanine racemase). Although an enzyme-coupled assay method has been used to measure racemase activity, the CD method is superior to the enzyme assay because it can accurately determine the immediate
Portland Press Ltd..
-
12. Amino Acid Sequence of the Threonine-Containing Mureins of Coryneform Bacteria
In a study of the mureins of coryneform bacteria (Arthrobacter, Brevibacterium, Cellulomonas, Corynebacterium, Erysipelothrix), 21 threonine-containing strains were found. In several of the strains the amino acid and amino sugar composition of the murein was muramic acid (Mur), glucosamine (GlcNH2), d-Glu, l-Lys, l-Thr, and Ala in a molar ratio of 1:1:1:1:1: