Results 121 to 130 of about 177,399 (296)

Valorization of Municipal Solid Waste using Hydrothermal Carbonization and Gasification: A review

open access: green, 2020
Fidel Vallejo   +6 more
openalex   +2 more sources

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas   +16 more
wiley   +1 more source

Study of the variability of the rainfall microstructure. A comparison using multisensor measuraments [PDF]

open access: yes, 2006
La mesura de pluja per teledetecció (radar i satèl·lit) es basa en l'associació dels valors d'intensitat de pluja amb els valors de contingut d'aigua en un volum de l'espai i amb la reflectivitat de les gotes d'aigua. Per poder millorar les estimacions d'
Rosich Sánchez, Jordi
core  

Enzymatic synthesis of acylglycerides from agroindustrial residues: process design and simplified techno‐economic assessment

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study developed an enzymatic process to add value to palm oil fatty acid distillate (PFAD) and glycerol, resulting in the production of monoacylglycerides (MAG) and diacylglycerides (DAG). The biocatalyst loading (Novozym 435) and molar ratio of reagents were evaluated to obtain a suitable reaction condition in terms of space–time yield ...
Ronaldo Rodrigues de Sousa   +4 more
wiley   +1 more source

Valores olímpicos como valores humanos

open access: yes, 2016
On the basis of Prof. José Mª Cagigal thoughts, Pierre de Coubertin ideology and the Olympic Movement Philosophy we develop the contents of “Olympic Values as Human Values”. The Olympic Charter states in its principle Number 2 that “Olympism is a way of life that exalts and combine in a coherent whole the qualities of body, willingness and spirit ...
openaire   +1 more source

Life cycle assessment of biodiesel synthesis from waste cooking oil using bifunctional heterogeneous catalyst

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The development of renewable energy sources is important in order to achieve the United Nations Sustainable Development Goals (SDGs). Waste cooking oil (WCO) is a promising feedstock for biodiesel production through transesterification. Heterogeneous bifunctional catalysts offer a sustainable alternative to conventional homogeneous bases such ...
Frederick Jit Fook Phang   +9 more
wiley   +1 more source

Normales climáticas en el observatorio de la Universitat Jaume I (2003-2006)

open access: yesMillars. Espai i Història, 2007
L’article presenta una anàlisi dels registres de l’Observatori Universitari des de 2003, una completa estació Casella, model Cell, que aporta valors de radiació solar, temperatures, precipitacions, pressió atmosfèrica, humitat relativa, evaporació i ...
José Quereda Sala   +2 more
doaj  

Estudi sobre la concordança de resultats entre diferents mètodes clínics per a la determinació subjectiva de vergències fusionals en VP [PDF]

open access: yes, 2015
OBJECTIU: El principal objectiu és realitzar un estudi sobre la concordança de resultats entre diferents mètodes de mesura per a la determinació de les reserves horitzontals en visió propera. MÈTODE: Vam avaluar una mostra de 53 subjectes, estudiants de
Capdevila Fornell, Eva
core  

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