Zobrazeno 1 - 10
of 38
pro vyhledávání: '"José Luis Parra"'
Autor:
Leticia Presa Madrigal, Juan Antonio Rodríguez Rama, Domingo A. Martín Sánchez, Jorge L. Costafreda Mustelier, Miguel Ángel Sanjuán, José Luis Parra y Alfaro
Publikováno v:
Applied Sciences, Vol 14, Iss 11, p 4344 (2024)
Concrete and Portland cement-based products are the most widely used materials in the construction industry. According to the Global Cement and Concrete Association (GCCA), 14 billion cubic meters of concrete are consumed worldwide every year. Knowle
Externí odkaz:
https://doaj.org/article/fe0bb987294b434f80fd8445c378a0e1
Autor:
Jorge L. Costafreda, Domingo A. Martín, Juan Herrera, Jorge L. Costafreda-Velázquez, Leticia Presa, Ana García-Laso, José Luis Parra
Publikováno v:
Chemistry, Vol 4, Iss 3, Pp 669-680 (2022)
The geological nature of the territory of the Republic of Cuba has favoured the formation of large and varied deposits of volcanic tuffs enriched by various species of zeolites. Today, new zeolite deposits continue to be discovered in the country. Th
Externí odkaz:
https://doaj.org/article/b8c75892d58e40a9ad5d9b0f49147936
Publikováno v:
Visión Electrónica, Vol 17, Iss 1 (2023)
This document shows the implementation of a water conductivity measurement system with the special attribute of data transmission in real time through Wi-Fi and Bluetooth devices. For the development of the proposed work, an evolutionary methodology
Externí odkaz:
https://doaj.org/article/279715e7c5264a15b1233ecdcd095e86
Autor:
Beatriz Astudillo, Domingo A. Martín, Jorge L. Costafreda, Leticia Presa, Miguel A. Sanjuán, José Luis Parra
Publikováno v:
Buildings, Vol 13, Iss 7, p 1647 (2023)
Presently, the search for urgent solutions to mitigate climate change has become a global priority. One of the most important challenges is the characterization, standardization, and technology of sustainable natural raw materials, which will signifi
Externí odkaz:
https://doaj.org/article/85b1b18a903a4ba5abf8c679ed7b591e
Autor:
Domingo A. Martín, Jorge Luis Costafreda, Esteban Estévez, Leticia Presa, Alicia Calvo, Ricardo Castedo, Miguel Ángel Sanjuán, José Luis Parra, Rafael Navarro
Publikováno v:
Crystals, Vol 11, Iss 11, p 1367 (2021)
This work presents the results of the partial substitution of Portland cement (PC) by natural fluorite (NF) and calcined fluorite (CF) in mortars, at 10%, 25% and 40%. To meet these objectives, a sample of fluorite was initially studied by XRD, SEM a
Externí odkaz:
https://doaj.org/article/9dbf541828364b7babdd1296fa2e962e
Publikováno v:
Molecules, Vol 26, Iss 17, p 5348 (2021)
This work presents the results of the study of the physical, chemical, mineralogical and pozzolanic properties of the altered volcanic tuffs (AVT) that lie in the Los Frailes caldera, south of the Iberian Peninsula, and demonstrates their qualities a
Externí odkaz:
https://doaj.org/article/2f0dfb56e49040d1b1129654aa4ffd6f
Autor:
Rafael E. Reigal Garrido, Antonio Videra García, María Victoria Márquez Casero, José Luis Parra Flores
Publikováno v:
Apunts: Educación Física y Deportes, Vol 1, Iss 111, Pp 23-28 (2013)
Este trabajo analiza las relaciones entre el autoconcepto físico multidimensional (habilidad física, condición física, atractivo físico y fuerza) y el autoconcepto general con las barreras para la práctica física, poniendo de manifiesto la cap
Externí odkaz:
https://doaj.org/article/efe2d44d2e91415c9946b0015787958f
Autor:
Elizabeth Regina Cassalett Bustillo, Rocío Esperanza Patiño Burbano, José Luis Rodríguez-Bautista, José Luis Parra Arango
Publikováno v:
Ciencia y Tecnología Agropecuaria, Vol 17, Iss 2 (2016)
A partir de riñón y orina de bovinos, se aislaron en campo serovares de Leptospira spp., en los departamentos de Cundinamarca y Meta, Colombia. Los aislamientos fueron clasificados mediante análisis filogenético y ribotipificación, utilizando co
Externí odkaz:
https://doaj.org/article/b13638ae39de4d8e82274aa95e7ff9b3
Publikováno v:
Aula, Vol 2, Iss 0 (2009)
La hipótesis que nos formulamos, fue la siguiente: El método de trabajo de campo y de laboratorio, rigurosamente programado, es más eficaz que el método tradicional de exposición y prácticas en clase, con respecto a la formación científica de
Externí odkaz:
https://doaj.org/article/122ad3cfa7124b95848bba6dd9d56c2b
Autor:
Leticia Presa, Santiago Rosado, Christian Peña, Domingo Alfonso Martín, Jorge Luis Costafreda, Beatriz Astudillo, José Luis Parra
Publikováno v:
Processes, 2023-02-22, Vol. 11, No. 657
Processes
Volume 11
Issue 3
Pages: 657
Processes
Volume 11
Issue 3
Pages: 657
The eruption of the Cumbre Vieja volcano on 19 September 2021, resulted in the deposition of large quantities of volcanic ash (VA), causing a great impact on the citizens. This work aims to study the properties of this volcanic ash as pozzolanic raw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8af39c264a1a960a0fdaaa7f876286ce
https://oa.upm.es/72708/
https://oa.upm.es/72708/
