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Comparative study of hydrogen storage on metal doped mesoporous materials
(Elsevier Science, 2018-04-18)
The hydrogen adsorption capacity of mesoporous materials MCM-41 modified with Co, Fe, Ti, Mg and Ni at 77 K and 10 bar was investigated. Various techniques including XRD, N2 adsorption and DRUV–vis were employed for the ...
The soil parent materialMaterial de origem do solo
(Instituto Geológico, Secretaria do Meio Ambiente, São Paulo, 2017)
Population convergence in the Strobel Plateau: A discussion based on the study of lithic raw materials variability
(Elsevier, 2019-04)
Rock art research carried out in the Strobel Plateau (Santa Cruz province, Patagonia, Argentina - 700 to 1200 masl) has shown that during Late Holocene population convergence took place in this area, where information was ...
Research for the design based on material cultureInvestigación para el diseño apoyada en cultura material
(USFQ Press, departamento editorial de la Universidad San Francisco de Quito USFQ, 2015)
Biomass derivative valorization using nano core-shell magnetic materials based on keggin-heteropolyacids: Levulinic acid esterification kinetic study with n-butanol
(Hindawi Publishing Corporation, 2019-05-12)
Magnetic materials based on Keggin heteropolyacids immobilized on mesoporous silica-coated magnetite particles with a core-shell structure were synthesized. The activity of the catalyst was studied in the esterification ...
Is Mineral Trioxide Aggregate a Bioceramic?
(Universidad de Costa Rica, 2016)
Raw materials, technology and use-wear analysis of scrapers and points of the rock shelter of Benzú
(Pergamon-Elsevier Science Ltd, 2020-07)
The rock shelter of Benzú, located in the Atlantic-Mediterranean geohistorical region of North Africa and the vicinity of the Strait of Gibraltar, presents a deep stratigraphic sequence dated, using various techniques, to ...