Results 31 to 40 of about 23,178 (223)

Organic Photoelectrochemical Cells Beyond Performance: Interface and Catalyst Engineering for Durability

open access: yesAdvanced Energy Materials, EarlyView.
Organic photoelectrochemical cells based on π‐conjugated semiconductors offer a versatile platform for solar fuel generation. This review outlines operating principles, device architectures, and key metrics, and highlights advances in p‐ and n‐type photoelectrodes, interfacial engineering, and catalyst integration.
Jaehyeong Kim   +8 more
wiley   +1 more source

Perbandingan Viskositas, Titik Nyala dan Titik Beku Biodiesel dari Rumput Laut (Eucheuma denticulatum), Minyak Ikan Lemuru (Sardinellla longiceps) dan Biodiesel Komersil
[ The Comparison of Viscosity, Flash Point and Freeze Point Biodiesel of Seagrass (Eucheuma denticulatum), Sardinella Oi]

open access: yesJurnal Ilmiah Perikanan dan Kelautan, 2015
Necessity of fuel are increasing rapidly nowadays. But oil is an irreversible product, so it is required to look for other alternative fuels, especially from renewable materials.
Boedi Setya Rahardja   +2 more
doaj   +1 more source

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková   +4 more
wiley   +1 more source

TRANSESTERIFIKASI IN SITU BIJI JARAK: PENGARUH KADAR AIR DAN UKURAN PARTIKEL BAHAN TERHADAP RENDEMEN DAN KUALITAS BIODIESEL In Situ Transesterification of Jatropha Seeds: Effect of Moisture Content and Particle Size on Yield and Quality of Biodiesel

open access: yesAgritech, 2012
The objective of this study was to investigate in situ transesterification process allowing to realize directly biodiesel production from jatropha seeds.
Ika Amalia Kartika   +3 more
doaj   +1 more source

Evaluación de catalizadores de óxido de zinc y su actividad catalítica en la reacción de transesterificación para la producción de biodiésel [PDF]

open access: yes, 2008
Con el fin de obtener un mayor rendimiento en la producciónde biodiésel, comparado con el obtenido en estudios previos(1), se sintetizaron catalizadores de óxido de zinc empleando los métodos de impregnación y sol-gel.
Barrera Diaz, Deicy   +4 more
core  

Modelo de programación matemática para la cadena productiva del biocombustible biodiésel, en el departamento del Meta, Colombia [PDF]

open access: yes, 2008
Trabajo de investigaciónLos beneficios asociados a los biocombustibles se ven reflejados en un creciente número de países, introduciendo o planeando introducir, políticas para incrementar la proporción de su producción dentro de su matriz energética ...
Bouraoui   +29 more
core   +1 more source

The Biofuels Blueprint: Understanding the U.S. Renewable Fuel Standard

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT We provide a comprehensive review of the U.S. Renewable Fuel Standard (RFS), synthesizing nearly two decades of program evolution, market outcomes, and economic analysis. The RFS mandates minimum volumes of renewable fuel blending through a nested structure based on life‐cycle greenhouse gas reductions, enforced via tradeable Renewable ...
Maria Gerveni   +3 more
wiley   +1 more source

Alternativas productivas para la industria de biodiésel en Colombia

open access: yesCuadernos Latinoamericanos de Administración, 2017
La industria mundial del biodiésel tiene como desafío identificar materias primas alternativas y desarrollar tecnologías, que permitan disminuir costos de producción de este biocombustible, haciéndolo más competitivo frente al derivado del petróleo y ...
Emyle Lucía Britton Acevedo   +2 more
doaj   +1 more source

Biotecnología de microalgas. Producción de biodiésel [PDF]

open access: yes, 2011
Debido a la situación planteada actualmente como consecuencia del agotamiento de los combustibles fósiles, el aumento del precio del petróleo o la creciente preocupación ambiental, se demanda urgentemente la búsqueda de fuentes de energía alternativas ...
Navarro López, Elvira
core   +1 more source

From continuous to interruptible distillation: Flexible electric heating column architecture with fast start‐up

open access: yesAIChE Journal, EarlyView.
Abstract Electrification of distillation offers a promising route to reducing scope‐1 emissions from one of the chemical industry's most energy‐intensive unit operations. However, conventional adiabatic columns are dynamically inflexible: Long, energy‐intensive start‐ups make shutdown and restart impractical under variable electricity prices and ...
Samuel Mercer, Michael Baldea
wiley   +1 more source

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