Buscar
Mostrando ítems 11-20 de 1184
NITRATE DETERMINATION IN CHILEAN CALICHE SAMPLES BY UV-VISIBLE ABSORBANCE MEASUREMENTS AND MULTIVARIATE CALIBRARON
(Sociedad Chilena de Química, 2009)
Distinguishing Noise from Chaos: Objective versus Subjective Criteria Using Horizontal Visibility Graph
(Public Library of Science, 2014-09)
A recently proposed methodology called the Horizontal Visibility Graph (HVG) [Luque et al., Phys. Rev. E., 80, 046103 (2009)] that constitutes a geometrical simplification of the well known Visibility Graph algorithm [Lacasa ...
Spectrophotometric determination of sparfloxacin in pharmaceutical formulations using bromothymol blue
(Elsevier B.V., 2001-10-01)
A visible light spectrophotometric method is described for them determination of sparfloxacin in tablets. The procedure is based on the complexation of bromothymol blue 0.5% and sparfloxacin to form a compound of yellow ...
Intermediate state created by dopant ions (Mn, Co and Zr) into TiO2 nanoparticles for degradation of dyes under visible light
(Elsevier, 2016)
To expand the absorption of pure nanosized TiO2 to the visible light range for improving the photocatalytic efficiency necessary for industrial application, the way of doping different transition metals such as Mn, Co and ...
Metadata Usage Tendencies in Latin American Electronic Journals
(ELPUB2009. Rethinking Electronic Publishing: Innovation in Communication Paradigms and Technologies - Proceedings of the 13th International Conference on Electronic Publishing. Milan, Italy. June 10-12, 2009-06)
The present study investigates the extent to which metadata tags are used in Latin American electronic journals, and whether these journals in fact provide basic information
(abstracts, keywords, etc.) that could be tagged ...
Rethinking the translator (in)visibility in the field of web news: some proposals for the academic education in translation
(Univ Sao Paulo, Fac Filosofia, 2017-07-01)
Technological advances in the late 20th century resulted in transformations not only in news writing, but also in the role played by translators working in these emerging contexts. This scenario has defined a new set of ...
Visibility strategy of the academic production and research output of the UFPS: Institutional digital repository
(Journal of Physics: Conference SeriesInglaterra, 2018-12-07)
Within the University Francisco de Paula Santander (UFPS), activities are conducted to generate a large amount of academic and research output for which there exists a high demand for access to them. The objective of this ...
Visibility strategy of the academic production and research output of the UFPS: Institutional digital repository
(Journal of Physics: Conference SeriesInglaterra, 2018-12-07)
Within the University Francisco de Paula Santander (UFPS), activities are conducted to generate a large amount of academic and research output for which there exists a high demand for access to them. The objective of this ...
Experimental and theoretical correlation of very intense visible green photoluminescence in BaZrO3 powders
(American Institute of Physics (AIP), 2008-03-15)
Very intense visible green photoluminescence (PL) was observed at room temperature in structurally ordered-disordered BaZrO3 powders. Ab initio calculations, ultraviolet-visible absorption spectroscopy, electron paramagnetic ...
Tunable visible photoluminescence of powdered silica glass
(Elsevier B.V., 2008-01-15)
intense photoluminescence in the visible region was observed at room temperature in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The emission band maximum shows an interesting ...