Results 11 to 20 of about 1,302 (178)

A Robust Cost-Effective Spectrophotometric Method for Nb Determination in Refractory Nb-doped Gadolinium Zirconate: Overcoming Matrix Dissolution Challenges. [PDF]

open access: yesAnal Sci Adv
ABSTRACT A simple, robust and cost‐effective analytical methodology was developed for the determination of niobium in highly refractory materials: Nb‐doped gadolinium zirconate (Gd2Zr2O7:Nb) and niobium pentoxide (Nb2O5). The challenge of digesting these matrices was successfully accomplished by establishing two independent dissolution procedures: (i ...
Verma P, Chandane A.
europepmc   +2 more sources

Cellulose Acetate Fibers With Infiltrated ZnO Nanocrystals: Activation of Antibacterial Properties Against Acne vulgaris by Oxygen Plasma Treatment. [PDF]

open access: yesSmall
We present biodegradable cellulose acetate fibers infiltrated with ZnO nanocrystals for Acne treatment. Fibers produced by centrifugal spinning were vapor‐phase infiltrated to contain uniform ZnO nanocrystals. Oxygen plasma treatment enhanced the fibers´ wettability.
Rihova M   +12 more
europepmc   +2 more sources

Inorganic Chemical Composition by X-Ray Fluorescence Spectrometry of the Mineral Waters from the Minas Gerais Water Circuit, Brazil

open access: yesBrazilian Journal of Radiation Sciences, 2021
The water parks located in the cities of Cambuquira, Caxambu, Conceição do Rio Verde, Lambari and Marimbeiro are part of the Water Circuit of Minas Gerais and have their mineral waters regularly consumed by the local population and tourists motivated by ...
Sandra Regina Damatto
doaj   +1 more source

Kinetics and mechanism of As2S2 oxidation [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The kinetics of realgar (As2S2) oxidation was studied under isothermal and non-isothermal conditions. The obtained values of the activation energy indicate that the process occurs in the kinetic domainwith the realgar particles being converted to As2O3 ...
Mihajlović Ivan N.   +3 more
doaj   +1 more source

Determination of Some Elements in Legumes Using ICP-MS and EDXRF Methodology Applications

open access: yesActa Chimica Slovenica, 2021
The current study involves two analytical research techniques, inductively coupled plasma-mass spectrometry (ICP-MS) and energy dispersive X-ray fluorescence (EDXRF) spectroscopy, used to determine the elemental composition of different legumes usually ...
Lovro Sinkovič   +3 more
doaj   +1 more source

Estudio de botones de oro de la primera Edad del Hierro del Sudoeste de la Península Ibérica. Identificación de un taller metalúrgico de oro

open access: yesTrabajos de Prehistoria, 2010
Botones de oro pertenecientes a la primera Edad del Hierro, procedentes de Castro dos Ratinhos, Fortios e Outeiro da Cabeça (Portugal), fueron analizados por EDXRF y Micro-PIXE.
António M. Monge Soares   +4 more
doaj   +1 more source

Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence

open access: yesRevista de la Sociedad Científica del Paraguay, 2019
The seed of Araucaria angustifolia is largely produced and consumed in Parana state, Brazil. It has an estimated annual consumption of approximately 0.167 kg per capita. The samples of seeds were acquired in 8 different commercial points of Londrina city
Edher Zacarías Herrera   +2 more
doaj   +1 more source

Recovering and restitution of unknown, unidentified, and unlabeled samples in laboratories using EDXRF analysis

open access: yesMethodsX, 2021
This Study presents a method to recover and label unknown samples in a nuclear laboratory using Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometry based on spectra differentiation and analysis.
Cebastien Joel Guembou Shouop   +6 more
doaj   +1 more source

Portable EDXRF and Principal Component Analysis for inorganic element determination and provenance of eye shadows

open access: yesSemina: Ciências Exatas e Tecnológicas, 2019
Nowadays cosmetic products play an important role in the life of almost all people. Men and women devote much time, resources and efforts to cultivate personal hygiene and the best possible look along their lives.
Rafael Molari   +5 more
doaj   +1 more source

EDXRF analysis of Amazonian Burseraceae oleoresins [PDF]

open access: yesJournal of the Brazilian Chemical Society, 2009
The trees from the Burseraceae family exude a resin widely used for both cosmetics and perfumes and in folk medicine, for the treatment of many diseases. Samples of oleoresin from five species (Protium cf. apiculatum, P. cf. hebetatum, P. cf. heptaphyllum, P.
Rüdiger, André L.   +2 more
openaire   +3 more sources

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