Buscar
Mostrando ítems 1-10 de 529
Chiral separation of aryloxyphenoxy-propionate herbicides in a permethyl-β-cyclodextrin based column. Influence of temperature and mobile phase composition on enantioselectivity
(Wiley VCH Verlag, 2017-08)
We used a permethyl-β-cyclodextrin chiral stationary phase under reversed-phase conditions for the chiral separation of four aryloxyphenoxy-propionate herbicides (fenoxaprop-p-ethyl, quizalofop-p-ethyl and tefuryl, and ...
Study of enantioseparation of β-blockers using amylose tris(3-chloro-5-methylphenylcarbamate) as chiral stationary phase under polar-organic, reversed-phase and hydrophilic interaction liquid chromatography conditions
(Elsevier, 2020-12)
In this study, we describe the experimental variables influencing enantioseparation of twelve β-blockers when analyzed under polar-organic, reversed-phase and hydrophilic interaction liquid chromatography conditions on a ...
Effect of temperature on pH measurements and acid-base equilibria in methanol-water mixtures
(Elsevier Science, 2003-06)
The knowledge of the acid-base equilibria in water-solvent mixtures of both common buffers and analytes is necessary in order to predict their retention as function of pH, solvent composition and temperature. This paper ...
Optimization of mobile phase for separation of carbohydrates in honey by high performance liquid chromatography using a mixture design
(Sociedade Brasileira de Química, 2006)
Estudo de compósitos de tips-pentaceno para aplicações em transistores
(Universidade Estadual Paulista (Unesp), 2016-06-28)
Um dos atuais desafios da eletrônica orgânica é a obtenção de semicondutores com alta mobilidade que forme filmes com boa morfologia quando depositado/impresso por solução, resultando em boa uniformidade e reprodutibilidade ...
Water-Induced Phase Transition in Cyclohexane/n-Hexanol/Triton X-100 Mixtures at a Molar Composition of 1/16/74 Studied by NMR
(2017)
Molecular aggregation in a mixture of Triton X100/n-hexanol/cyclohexane at a molar ratio of 1/16/74 is studied upon addition of small amounts of water. The composition of organic components has been chosen at a ratio ...
Characterization of zirconized silica supports for HPLC
(Elsevier Science BvAmsterdamHolanda, 2005)
INTEMPERIZAÇÃO DE ROCHAS ULTRABÁSICAS NO RIO GRANDE DO SUL, BRASILINTEMPERIZAÇÃO DE ROCHAS ULTRABÁSICAS NO RIO GRANDE DO SUL, BRASIL
(Sociedade Brasileira de Geologia, 2018)
Mobilidade funcional e composição corporal de idosos do International Mobility In Aging Study Brazil – IMIAS BRASIL
(Universidade Federal do Rio Grande do NorteBrasilUFRNNutrição, 2019-12-05)
A functional mobility consists of movements associated with or functional balance and non-daily use, such as, for example, getting up and walking at a comfortable or semi-auxiliary pace of an instrument. The objective of ...
Effect of temperature on the chromatographic retention of ionizable compounds: II. Acetonitrile–water mobile phases
(Elsevier Science, 2005-06)
The retentive behavior of weak acids and bases in reversed-phase liquid chromatography (RPLC) upon changes in column temperature has been theoretically and experimentally studied. The study focuses on examining the temperature ...