Results 71 to 80 of about 484 (218)

Dos Españas en guerra, dos educaciones

open access: yesEducació i Història: Revista d'Història de l'Educació, 2017
L’educació va lligada a les guerres com a instrument propagandístic de les idees que s’hi defensen. En aquest text es descriu com en les dues Espanyes contendents en la Guerra Civil espanyola és utilitzada l’educació com a mitjà de dominació política i ...
Juan Manuel Fernández-Soria
doaj  

Sustainable Palm Oil Extraction and Trends in the Use of Green Technologies: State‐of‐the‐Art and Future Directions

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Palm oil, which is extracted from the mesocarp of the fruit of the Elaeis guineensis Jacq. palm tree, is the most widely produced vegetable oil in the world. The extraction of this substance typically utilizes the conventional pressing method, a technique that is advantageous due to its low operating cost and simplified process.
Constantino Lucas Queta   +2 more
wiley   +1 more source

L'Educació a Mallorca a l'època de la Guerra Civil: els canvis a la cultura escolar = Education in Mallorca during the Spanish Civil War: Changes in the Conception of School Education

open access: yesEducació i Història: Revista d'Història de l'Educació, 2009
A Mallorca, el cop d'estat contra la II República, que inicià la Guerra Civil, va triomfar des del primer moment. Durant la guerra entre 1936 i 1939 no es van viure en l'illa importants esdeveniments bèl·lics, cosa que va proporcionar a les autoritats ...
Bernat Sureda i Garcia
doaj  

Optimization of Saponification Process for Quantification of Individual and Total Tocopherols and Phytosterols in Canola Oil Refining By‐Products

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT In this study, saponification variables were optimized using a face‐centred central composite design‐response surface methodology. The variables included reaction temperature (50°C–120°C), reaction time (30–180 min), KOH concentration (0.5–3 M) and pyrogallol concentration (0–1% w/v).
Milad Kazemi   +4 more
wiley   +1 more source

Afavorir innovacions que canviïn la gramàtica de l’escola i les relacions pedagògiques, i que qüestionin la creació d’un subjecte neoliberal

open access: yesRevista Catalana de Pedagogia, 2017
Davant de l’actual interès per afavorir innovacions educatives amb la finalitat de promoure la creació de xarxes d’escoles innovadores o avançades, aquest article tracta de contribuir a l’actual efervescència educativa que es viu a Catalunya, explorant ...
Fernando Hernández-Hernández
doaj  

Catalytic Pyrolysis of Waste Polystyrene Over Fe–B Composite Catalyst for Enhanced Liquid Fuel Production

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Healthcare derived polystyrene waste represents a growing and under addressed fraction of plastic waste streams due to contamination risks and limited recyclability. This study aims to investigate the valorization of waste polystyrene foam through catalytic and noncatalytic pyrolysis pathways to evaluate product yield distribution and identify
Salman Khan   +4 more
wiley   +1 more source

Evaluation of Greenhouse Gas Emissions and Sludge Characteristics in Typical AAO Process WWTPs in Taihu Lake Basin, China

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigated sludge characteristics and greenhouse gas (GHG) emission from 16 anaerobic‐anoxic‐oxic (AAO) process wastewater treatment plants (WWTPs), 11 municipal and 5 industrial WWTPs, located in the Taihu Lake Basin, China. Influent/effluent water quality, sludge properties, operational parameters, GHG emission patterns, and ...
He Li, Zhirun Liu, Rajendra Prasad Singh
wiley   +1 more source

Valores

open access: yesRevista Facultad de Ciencias Económicas, 1996
A través de la evolución del hombre se ha manifestado en forma racional un fundamento a razón de ser, de hacer, de realizar una acción o actividad, de expresar un comportamiento, tanto en términos individuales como comunitariamente. Esta característica propia del ser humano, adquirida culturalmente, reforzada o modificada por la convivencia en sociedad,
openaire   +2 more sources

Sustainable Manufacturing Platforms for Closed‐Cycle Bioeconomy Applications

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The transition to a circular bioeconomy requires innovative production platforms that prioritize sustainability, resource efficiency, and waste minimization. Organic waste from agriculture, aquaculture, and food production represents an underutilized feedstock for biomanufacturing, contributing to a circular economy.
Yelizaveta Chernysh   +2 more
wiley   +1 more source

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