Zobrazeno 1 - 10
of 217
pro vyhledávání: '"ENRIQUE VERA"'
Autor:
Adán de Jesús Bautista-Morantes, Carlos Ordulio Calderón-Carvajal, Jairo Alberto Gómez-Cuaspud, Enrique Vera-López
Publikováno v:
Materials Science for Energy Technologies, Vol 7, Iss , Pp 335-348 (2024)
In this study, the influence of p-type doping with Na atoms on the optical bandgap and electrical conductivity of a series of bismuth ferrites (BiFeO3) synthesized by a low-cost solid-state method was evaluated. To identify the properties that influe
Externí odkaz:
https://doaj.org/article/4295df3c5d1a41b6934503f47ee99415
Autor:
Adán de Jesús Bautista-Morantes, Carlos Ordulio Calderón-Carvajal, Jairo Alberto Gómez-Cuaspud, Enrique Vera-López
Publikováno v:
Materials Science for Energy Technologies, Vol 7, Iss , Pp 166-179 (2024)
This research describes the synthesis of the ferroelectric perovskite Na0.02Bi0.98FeO3-δ using a low-cost solid-state method starting from a bismuth ferrite BiFeO3 structure in order to obtain a material with improved properties for photovoltaic app
Externí odkaz:
https://doaj.org/article/b2c2415093ea4178ae243de5c31326da
Autor:
Jorge Humberto Muñoz-Malpica, Mery Isabel Espitia-Mayorga, María Alejandra Cerón-Achicanoy, Jairo Alberto Gómez-Cuaspud, Enrique Vera-López
Publikováno v:
Dyna, Vol 90, Iss 225 (2023)
Polycrystalline Cu2FeSnS4 materials (abbreviated CFTS) were synthesized by a hydrothermal route implementing a one-step thermal treatment to measure dependence on different reaction times in the stabilization and structural, vibrational, and optoelec
Externí odkaz:
https://doaj.org/article/43e31a7d28bf4d8991228771069b0fee
Publikováno v:
Revista Facultad de Ingeniería, Vol 31, Iss 61 (2022)
Los aceros pulvimetalúrgicos tienen una menor resistencia a la corrosión en comparación con los aceros forjados. Su comportamiento se ve afectado simultáneamente por la porosidad interconectada, la morfología de los poros, la interacción con la
Externí odkaz:
https://doaj.org/article/0e3dc0d776ab4518b22ce9a9d5b7f462
Autor:
Enrique Vera
Publikováno v:
Revista Española de Sanidad Penitenciaria, Vol 23, Iss 2, Pp 46-48 (2021)
Externí odkaz:
https://doaj.org/article/1acd389c40b14bc5806e71a89e0f01d4
Publikováno v:
Educación Médica, Vol 21, Iss 4, Pp 272-276 (2020)
Resumen: La Organización Mundial de la Salud, en fecha 11 de marzo del 2020, declara la situación de pandemia debida a la aparición de un nuevo coronavirus, síndrome respiratorio agudo severo-coronavirus 2 (SARS-CoV-2), que produce la enfermedad
Externí odkaz:
https://doaj.org/article/2c0ad02026a6420d8e57225ff2c50a6f
Autor:
KAROL LIZETH ROA BOHÓRQUEZ, ENRIQUE VERA LÓPEZ, LUIS ALEJANDRO FONSECA PÁEZ, GABRIEL PEÑA RODRÍGUEZ
Publikováno v:
Dyna, Vol 86, Iss 210, Pp 323-332 (2019)
The present work reports the microstructure, physical and mechanical properties of a material composed of kaolin, diatomite and calcium carbonate reinforcement (CaCO3). The ceramic prototypes were shaped by the slip casting method and sintered at tem
Externí odkaz:
https://doaj.org/article/68dc146d4f2b4461a275da4b47dc254c
Autor:
Eduin Yesid Mora Mendoza, Armando Sarmiento Santos, Enrique Vera López, Vadym Drozd, Andriy Durygin, Jiuhua Chen, Surendra K Saxena
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 3, Pp 2944-2956 (2019)
Carbon dioxide capture/release reactions using magnetite, Fe3O4, and hematite, Fe2O3, as sorbents were studied. Kinetics of mechanically activated chemical reactions between iron oxides and CO2 was investigated as a function of CO2 pressure and plane
Externí odkaz:
https://doaj.org/article/917d4740e5fb4894a133331ced0a9ab9
Autor:
Orlando Díaz-Parra, Enrique Vera-López
Publikováno v:
Revista Científica, Vol 1, Iss 31, Pp 32-44 (2018)
The gas pipeline is used for the transport of natural gas at a great distance. Risks derived from the handling of a combustible material transported under high pressure, by pipelines that pass close to where people live, makes it necessary to adopt p
Externí odkaz:
https://doaj.org/article/5eb6e896583048cb90ff3c010e62e092
Autor:
Orlando Díaz-Parra, Enrique Vera-López
Publikováno v:
Revista Científica, Vol 31, Iss 1 (2018)
El gasoducto es utilizado para el transporte de gas natural a gran distancia. Los riesgos derivados del manejo de un material combustible transportado a alta presión por conducciones que pasan cerca del lugar donde habitan personas hace necesario qu
Externí odkaz:
https://doaj.org/article/5b2f8fe091bd4be8a12d3ad8b1f6aa2a