Results 61 to 70 of about 30,986 (195)
A Comprehensive Review of Waste‐Derived Materials for Solar Still Performance Enhancement
Advanced Materials Interfaces, Volume 13, Issue 9, 5 May 2026.Solar desalination reduces energy use and produces freshwater sustainably, but its productivity is limited and cannot meet rising demand. Thus, solar desalination system improvements are sought to boost water productivity. Waste materials are abundantly available and burden the environment, making them low‐cost enhancers for solar desalination systems.
A. S. Abdullah +6 more
wiley +1 more source
Efectos del Diferencial de Impuestos a las Gasolinas en la Demanda de Automóviles [PDF]
La política tributaria respecto a los combustibles en Chile ha mantenido desde sus inicios impuestos menores para las gasolinas respecto al diesel. Como resultado la fracción de automóviles con motor diesel en el parque automotor ha crecido fuertemente ...
Claudio Agostini
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Gasogênio: energia alternativa na agricultura. [PDF]
, 2015 O que e gasogenio; Historico; Situacao atual do uso do gasogenio no Brasil; Aplicacoes na agricultura; Componentes e funcionamento de um gasogenio; Tipos de gasogenio; A escolha do gasogenio; O bom combustivel; Construcao e montagem; Manutencao e ...
SCHUNK, S. P.
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Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS
The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa +4 more
wiley +1 more source
Ingeniería, 2020 Contexto: Hay una tendencia en la sociedad moderna que se basa especialmente en el desarrollo de nuevos biocombustibles, direccionada específicamente hacia el campo de los motores de combustión interna, estableciéndose como punto central la pérdida de su
Daniel Andrey Herrera Susa +2 more
doaj +1 more source
Investigación e instalación de motor toyota 12R y caja de velocidad para modelo didactico del laboratorio de electromecánica automotriz [PDF]
, 2012 Sintiéndonos parte de la especialidad de Electromecánica Automotriz, de la Universidad San Francisco de Quito, hemos revelado la importancia de los preceptos en los distintos sistemas de un vehículo, de igual carácter los cálculos necesarios para la ...
Cepeda Bermeo, Mauricio Andrés +1 more
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Off‐Farm Employment and Rural Energy Transitions: A Systematic Review of Pathways and Gaps
Food and Energy Security, Volume 15, Issue 3, May/June 2026.ABSTRACT Transitioning to clean and affordable energy is a persistent development challenge for rural populations in low‐ and middle‐income countries, where dependence on traditional biomass‐based fuels continues to dominate. Although off‐farm employment has gained increasing attention as a driver of rural livelihood transformation, its specific ...
Salman Ibn Yasin +5 more
wiley +1 more source
Ciência e Agrotecnologia, 2012 Biodiesel is a renewable fuel derived from vegetable oils used in diesel engines, in any proportion with petroleum diesel, or pure. It is produced by chemical processes, usually by transesterification, in which the glycerin is removed.
Carlos Eduardo Silva Volpato +3 more
doaj +1 more source
Estudio comparativo entre los combustibles tradicionales y las nuevas tecnologías energéticas para la propulsión de vehículos destinados al transporte [PDF]
, 2004 En el presente proyecto se recogen una serie de propiedades y características sobre los combustibles tradicionales derivados del petróleo, gasolina y gasoil, y sobre los combustibles alternativos que tienen posibilidades de sustituirlos o complementarlos
Martín Martín, Francisca +1 more
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Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications
Mass Spectrometry Reviews, Volume 45, Issue 3, Page 548-582, May/June 2026.ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav +3 more
wiley +1 more source