Results 41 to 50 of about 186,864 (310)

METODOLOGÍA PARA LA EVALUACIÓN DEL TRASIEGO EFICIENTE DE COMBUSTIBLES

open access: yesRevista Centro Azúcar, 2022
Introducción: La custodia y control del trasiego de los diferentes combustibles ha sido siempre de interés para las comercializadoras, incluyendo el proceso de medición donde se esperan obtener resultados con el menor error posible, por tanto la ...
Yudiersi Sánchez Ramírez   +3 more
doaj  

Seguretat alimentària i combustibles fòssils, una dependència preocupant? [PDF]

open access: yes, 2011
La preocupació per la limitació de les reserves de combustibles fòssils i l'ús que se'n fa a càmera ràpida en relació amb la seva lenta producció natural planteja molts problemes respecte a l'actual infraestructura vital i de provisionament dels països ...
Arizpe, Nancy   +2 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Biodiesel de aceite de palma: una alternativa para el desarrollo del país y para la autosuficiencia energética nacional

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2003
Para Colombia, la introducción de un combustible alternativo para ser usado en el sector transporte, como complemento del diese! o ACPM, constituye una innovación tecnológica que puede ofrecer grandes ventajas económicas, sociales y ambientales.
Pedro Benjumea   +2 more
doaj   +1 more source

Potential Uses of Copper Wastes in the Building Sector: Inertization and Added Value Solutions

open access: yesMaterials Proceedings, 2021
Mining activity is the second biggest producer of waste in the European Union (EU), so to develop processes that allow the reuse of waste and the consequent creation of markets for these secondary raw materials are relevant for a desirable transition to ...
Santiago Rosado   +3 more
doaj   +1 more source

Les impacts des énergies fossiles sur l'environnement [PDF]

open access: yes, 1994
La satisfaction de leurs besoins en énergie est l'un des principaux facteurs de la transformation de leur environnement par les sociétés industrielles.
Landrieu, Guy
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Impuesto a los combustibles líquidos [PDF]

open access: yes, 2014
El presente trabajo es un análisis descriptivo del régimen impositivo del impuesto a los combustibles líquidos en Argentina, actualizado hasta el año 2013.Fil: Arroyo, Jorge Carlos Gustavo. Universidad Nacional de Cuyo.
Arroyo, Jorge Carlos Gustavo   +2 more
core  

Combustion noise

open access: yesProceedings of the Combustion Institute, 2015
AbstractCombustion noise is becoming increasingly important as a major noise source in aeroengines and ground based gas turbines. This is partially because advances in design have reduced the other noise sources, and partially because next generation combustion modes burn more unsteadily, resulting in increased external noise from the combustion.
Dowling, Ann P., Mahmoudi, Yasser
openaire   +3 more sources

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

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