Buscar
Mostrando ítems 1-10 de 5407
UV-visible absorption characteristics of TEOS-derived and Cr-doped silica sonogels aged in different pH solutions and heat treated up to 600 degrees C
(Kluwer Academic Publ, 2003-08-01)
Cr-doped xerogels were obtained by sol-gel process from the acid-catalyzed and ultrasound-stimulated hydrolysis of tetraethoxysilane (TEOS) with addition of CrCl3.6H(2)O in water solution during the liquid step of the ...
Evaluation of the pH and electrical conductivity in milk from jersey cows during the first month of lactation
(UNIV ESTADUAL LONDRINA, 2009)
In order to assess the influence of the colostrum period on pH and, electrical conductivity, we collected 418 milk samples from 127 Jersey cows. The samples were collected from healthy udders that did not present any ...
Antioxidant Defense System of Tadpoles (Eupemphix nattereri) Exposed to Changes in Temperature and pH
(Zoological Soc Japan, 2016-04-01)
Amphibians are highly susceptible to environmental changes, mainly at the larval stage during which they are restricted to small and ephemeral aquatic habitats, which are subject to large fluctuations of abiotic parameters, ...
Postgraduate Level and its Impact on Academic Studies and Professional Careers, Social and Job Mobility and Identity. A Study about PhD Graduates and PhD Students at UNCuyo, in the Light of a sui generis Paradigm
(Mediterranean Center of Social and Educational Research, 2014-04)
The project – a priority at the Secretary of University Policies agenda – dealt with PhD. graduates and PhD. students from different courses of study belonging to Cuyo University (UNCuyo, Argentina) and Cnam (France) (Social ...
UV-visible absorption characteristics of TEOS-derived and Cr-doped silica sonogels aged in different pH solutions and heat treated up to 600 degrees C
(Kluwer Academic Publ, 2003-08-01)
Cr-doped xerogels were obtained by sol-gel process from the acid-catalyzed and ultrasound-stimulated hydrolysis of tetraethoxysilane (TEOS) with addition of CrCl3.6H(2)O in water solution during the liquid step of the ...
The influence of pH, hydrolysis and degree of substitution on the temperature-sensitive properties of polyaspartamides
(2019-01-01)
Temperature-sensitive polyaspartamide obtained by the aminolysis reaction of polysuccinimide with isopropylamine has been proposed as a good material for biomedical applications. The polymer is susceptible to hydrolysis ...
Study of the influence of the pH media dissolution, degree of polymerization, and degree of swelling of the polymers on the mechanism of release of diltiazem from matrices based on mixtures of chitosan/alginate
(2002)
The dissolution profiles of formulations based on mixtures of chitosan/alginate depend on the pH. It is possible to distinguish two processes: (a) a fast kinetic drug release up to 180 min, where the pH value changes from ...
Magnitude of acid gastroesophageal reflux measured by 24-hour esophageal pH monitoring compared to the degree of endoscopic esophagitis Magnitud del reflujo gastroesofágico ácido cuantificado por medición de pH de 24 horas segun el grado de esofagitis end
(1994)
Twenty four hour esophageal pH monitoring was performed in 110 patients, placing a pH electrode 5 cm above the proximal border of the lower esophageal sphincter. This test allows to measure the total lapse in which there ...