Listar Artículos por autor "Sbriz, L."
Mostrando ítems 1-8 de 8
-
Determination of thin surface layers in-situ by the conversion electron mössbauer spectroscopy /CEMS/, using a parallel plate avalanche counter /PPAC/
Sbriz, L.; Villagran, M.; Valconi, G. (Journal of Radioanalytical and Nuclear Chemistry, 1988)In the present paper we describe a technique for the determination of thin layer thicknesses by the conversion electron Mössbauer spectroscopy /CEMS/, using a new alternative method, a parallel plate avalanche counter ... -
Determination of traces of heavy metals in estuarine waters of Barbacoas Bay, Colombia, by X-Ray fluorescence spectrometry
Mazo-Gray, V.; Sbriz, L.; Alvarez, M. (1998-12-04)An evaluation of metal contamination in estuarine waters and shrimp culture systems was conducted using two analytical processes: soluble metals were examined by radioisotope x-ray fluorescence spectrometry (RIXRF) and ... -
A low-cost LN2 monitor
Alvarez;, M.; Sbriz, L.; Cordero, M. (American Journal of Physician, 1989) -
A low‐cost LN2 monitor
Alvarez, M.; Sbriz, L.; Cordero, M. (American Journal of Physics, 1989-10)This article describes a homemade LN2 monitor that same function at a much-reduced cost protecting detector systems against accidental warmup by monitoring the liquid level in the dewar and providing a visual warning of ... -
Mineralogical analysis with the firing temperature of limestone and clay mixture from Dominican Republic using Mössbauer spectroscopy and X-ray powder diffractometry
Villagran, M.; Sbriz, L.; Valconi, G. (Springer Link, 1991)The study of a limestone and clay mixture using Mössbauer spectroscopy, and X-ray powder spectrometry (XRD) for different firing temperatures are presented. This type of mixture is used in raw minerals in order to obtain ... -
Mössbauer and X-ray fluorescence study of sediments from Samana Bay, Dominican Republic
Villagran, M.; Sbriz, L.; Alvarez, M. (Journal of Radioanalytical and Nuclear Chemistry, 1995-08)The chemical state of iron in sediments collected from Samana Bay has been determined by Mössbauer spectroscopy. The Mössbauer spectra were composed of two paramagnetic doulets, which correspond to high=spin ferric and ... -
Mössbauer study on indigenous ceramics in La Isabela City, Dominican Republic
Sbriz, L.; Valconi, G.; Villagran, M. (Springer Link, 1990)The following study deals with the determination of the firing temperature of some of the ceramics found in La Isabela City, Dominican Republic, first settlement of the Spaniards in the New World. These ceramics were ... -
Performance of the parallel plate avalanche counter (PPAC) for improving the depth profile of conversion electron Mössbauer spectroscopy (CEMS)
Villagram, M.; Sbriz, L.; Valconi, G. (Journal of Radioanalytical and Nuclear Chemistry, 1991)The parallel plate avalanche counter (PPAC) built in our laboratory was used to measure the CEM spectra of iron electrodeposited over a steel substrate. The electron counter was operated with ketone gas inside the ionization ...