Jana Vecstaudža
Riga Technical University
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Publication
Featured researches published by Jana Vecstaudža.
Materials Science and Applied Chemistry | 2017
Agnese Stunda-Zujeva; Jana Vecstaudža; Guna Krieķe; Līga Bērziņa-Cimdiņa
Abstract There is a lack of studies on a wide composition range for calcium phosphate glasses containing transition elements, e.g. niobium. Addition of Nb2O5 increases mechanical and chemical strength of calcium phosphate glasses and glass ceramics. Glass is formed in a wide range of compositions. CaO promotes batch melting. The oxidation state of niobium has important role in glass forming. Solid state reactions between P2O5 and Nb2O5 during batch melt change the oxidation state of niobium. Nb5+ in this system acts as an intermediate or conditional glass former (glass is yellow) while Nb4+ is a glass modifier (glass is blue). It is possible to obtain glass with Nb2O5 (Nb5+) content up to 70 mol%. The glass ceramics obtained by reheating powdered glass contained niobium in crystalline phases. The composition of crystalline phases depends on the phosphate amount.
Renewable & Sustainable Energy Reviews | 2015
A. Inés Fernández; Aran Solé; Jessica Giro-Paloma; Mònica Martínez; Mila Hadjieva; Abdel Boudenne; Mariaella Constantinescu; Elena Maria Anghel; Marta Malíková; Igor Krupa; Conchita Peñalosa; Ana Lázaro; Halime Paksoy; Kemal Cellat; Jana Vecstaudža; Diana Bajare; Boštjan Šumiga; Bojana Boh; Thomas Haussmann; Stefan Gschwander; Robert Weber; Piotr Furmański; Maciej Jaworski; Luisa F. Cabeza
Materials Science and Applied Chemistry | 2014
Jana Vecstaudža; Dmitrijs Jakovļevs; Līga Bērziņa-Cimdiņa; Vija Stikāne
The 2nd International Energy Storage Conference on Sustainable Energy Storage in Buildings (2nd IC-SES) | 2013
Jana Vecstaudža; Jānis Ločs; Diāna Bajāre; Camila Barreneche; Ana Inés Fernández
The 2016 E-MRS Fall Meeting and Exhibition | 2016
Jana Vecstaudža; Michael Gasik; Jānis Ločs
6th International Congress on Ceramics from Lab to Fab | 2016
Jana Vecstaudža; Jānis Ločs; Michael Gasik
publication.editionName | 2015
Jana Vecstaudža; Guna Krieķe; Agnese Stunda-Zujeva; Līga Bērziņa-Cimdiņa
publication.editionName | 2014
Jana Vecstaudža; Līga Bērziņa-Cimdiņa
publication.editionName | 2014
Jana Vecstaudža; Vija Stikāne; Līga Bērziņa-Cimdiņa
publication.editionName | 2014
Baiba Dumpe; Agnese Stunda-Zujeva; Jana Vecstaudža
