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pH changes of mixed biofilms of Streptococcus mutans and Candida albicans after exposure to sucrose solutions in vitro
(2018-06-01)
Objective: This study aimed to standardize an in vitro experimental model able to reproduce the pH changes that occur in dental biofilm under in vivo conditions, using a mixed biofilm of Streptococcus mutans and Candida ...
Exposure to pH 3.5 water has no effect on the gills of the Amazonian tambaqui (Colossoma macropomum)
(2021-05-01)
Tambaqui (Colossoma macropomum) are a model species for tropical fish physiology, but details are lacking about their ionoregulatory response to acid waters. To provide specifics, we measured unidirectional Na+ fluxes in ...
Manipulating pH using near-infrared light assisted by upconverting nanoparticles
(Royal Society of Chemistry, 2016-10)
Near-infrared light can be used to manipulate the pH of aqueous solutions by using upconverting nanoparticle-assisted photocleavage of a ruthenium complex photobase. Upconverting nanoparticles and the photobase were also ...
Influence of pH on the effectiveness of hydrogen peroxide whitening
(2014-01-01)
Objective: To evaluate the influence of pH on the bleaching effect of hydrogen peroxide on chromogen agents. Method: Hydrogen peroxide 50% was mixed with red wine or with an alcoholic solution of tobacco in glass cuvettes, ...
pH fronts and tissue natural buffer interaction in gene electrotransfer protocols
(Pergamon-Elsevier Science Ltd, 2017-11)
Gene electrotransfer (GET) protocols, based on the introduction into the cells of genes encoding immunomodulatory molecules, constitute a safe and powerful strategy for inducing an immune response against cancer. But GET ...
An impedance study about the effect of pH on the electron transport rate at poly(o-aminophenol) film electrodes
(Bentham Science Publishers, 2014-06)
Impedance measurements on poly(o-aminophenol) (POAP) film electrodes in solutions of different pH were carried out. Impedance spectra were interpreted in terms of the modified electron hopping model described in F.J. ...
Solution Thermodynamics of 6-Methylcoumarin in Aqueous Media at Several pH Values
(Colegio Farmaceuticos Provincia de Buenos Aires, 2013-04)
Based on van’t Hoff and Gibbs equations, thermodynamic functions Gibbs energy, enthalpy, and entropy of solution and mixing of 6-methylcoumarin in water at pH 1.2, 6.8, and 7.4, were evaluated from solubility values ...
Decreasing pH of mammary gland secretions is associated with parturition and is correlated with electrolyte concentrations in prefoaling mares
(2013-09-07)
The objectives of this study were to determine pH of the mammary gland secretions and the corresponding electrolyte concentrations in prefoaling mares. Pregnant mares (seven primiparous and seven multiparous) were monitored ...
PhD training through Latin American intercollegiate PhD programs
(Facultad de Odontología, 2012)