Results 121 to 130 of about 203,006 (296)

Optimizing Aircraft Trajectories with Multiple Cruise Altitudes in the Presence of Winds [PDF]

This study develops a trajectory optimization algorithm for approximately minimizing aircraft travel time and fuel burn by combining a method for computing minimum-time routes in winds on multiple horizontal planes, and an aircraft fuel burn model for ...
Grabbe, Shon, Ng, Hok K., Sridhar, Banavar   +2 more
core   +1 more source

Carbon Detonation and Shock-Triggered Helium Burning in Neutron Star Superbursts

, 2007
The strong degeneracy of the 12C ignition layer on an accreting neutron star results in a hydrodynamic thermonuclear runaway, in which the nuclear heating time becomes shorter than the local dynamical time.
Blinnikov S. I., Blinnikov S. I., Khokhlov A. M., Lars Bildsten, Nevin N. Weinberg   +4 more
core   +3 more sources

Optimizing biomass use for carbon storage and land use with the OptiBiU model

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Optimal biomass use in a circular bioeconomy requires a system perspective to guide decision‐making. The Optimizing Biomass Use (OptiBiU) model was developed for this purpose. The model distinguishes among primary biomass production, intermediate products, and biobased products, and incorporates recycling.
Pim M. Post, Heleen Ballemans, Argyris Kanellopoulos, Iris Vural Gürsel, Berien Elbersen, Steven Hoek, Remco Kranendonk, Wolter Elbersen, Sjaak Conijn   +8 more
wiley   +1 more source

Comparative field‐scale assessment of TLUD and Kon‐Tiki biochar systems: agronomic performance and net CO2e‐based techno‐economics

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Post‐harvest agricultural residues in Latin America are commonly underutilized, leading to greenhouse gas emissions and lost opportunities for bio‐based value creation. This study tests the hypothesis that decentralized, farmer‐scale pyrolysis technologies can deliver comparable agronomic benefits while exhibiting distinct techno‐economic and ...
Juan F. Saldarriaga, Thomas Käslin, Enara Fernández, Maider Amutio, Gartzen López, Laura Santamaria, Nausika Querejeta, Julián E. López   +7 more
wiley   +1 more source

Overview of the LIFE fuel cycle

EPJ Web of Conferences, 2013
The Laser Inertial Fusion Energy (LIFE) engine is a laser-driven inertial fusion energy system being developed with the goal to deliver fusion power in the next decade.
Reyes S., Babineau D., Davis R., Taylor C., Anklam T., Dunne M., Flowers D., Gentile C., Latkowski J., Maroni V., Martinez-Frias J., Miles R., Willms S.   +12 more
doaj   +1 more source

Simulating competition in the US bioeconomy to produce hard‐to‐electrify transportation fuels using limited biomass resources

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study presents a novel bioeconomy optimization framework, BiOpt, designed to address critical questions regarding the strategic use of limited US biomass resources for biofuel production. By integrating detailed techno‐economic analyses, life cycle assessments, and resource assessment data, BiOpt optimizes resource distributions across ...
Nicholas A. Carlson, Emily K. Newes, Kristen Lu, Eric C. D. Tan   +3 more
wiley   +1 more source

Potassium hydroxide activation of microalgal biochar for improved adsorption efficiency

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Activated carbon was prepared from Chlorella by carbonization and potassium hydroxide activation, and its structural properties and methylene blue (MB) adsorption performance were evaluated. Raw Chlorella exhibited an adsorption capacity of 287.2 mg g−1, which decreased to 214.8 mg g−1 after carbonization.
Keito Kubota, Numan Luthfi, Takashi Fukushima, Kenji Takisawa   +3 more
wiley   +1 more source

Activism as a long durée journey: Teachers against the Chilean neoliberal education model

British Educational Research Journal, EarlyView.
Abstract In this paper, I use the idea of purposes of education, particularly subjectification, and the concept of love to explore long‐term teacher activism in Chile. ‘Long‐term activism’ is used to describe an ongoing struggle rather than activism confined to specific moments.
Carla Tapia‐Parada
wiley   +1 more source

Between soft power and suspicion: Chinese international students as diasporic actors in U.S.‐China geopolitical tensions

British Educational Research Journal, EarlyView.
Abstract This study examines the under‐theorized political role and identity of Chinese international students, who emerge as significant actors caught between U.S. soft power ambitions and rising geopolitical suspicion. Amid escalating U.S.‐China tensions, these students are forced to confront environments shaped by competing geopolitical discourses ...
Jing Yu
wiley   +1 more source

Shaping research in marine functional connectivity for integrated and effective marine science and management

Biological Reviews, EarlyView.
ABSTRACT Effective knowledge of ecological connectivity at sea and at the land–sea interface is key to supporting global policy goals to conserve and restore ocean biodiversity and function. However, a persistent lack of commonality in terminology and understanding around the concept of connectivity in marine ecological studies hampers its integration ...
Audrey M. Darnaude, Susanne E. Tanner, Andreu Blanco, Anna M. Sturrock, Yael Teff Seker, Angel Pérez‐Ruzafa, Jonne Kotta, Tamar Guy‐Haim, Francisco R. Barboza, Manuel Hidalgo, Katell Guizien, Jerneja Penca, Lucía López‐López, Maria Beger, Federica Costantini, Sophie Arnaud‐Haond, Cynthia Riginos, Kris Hostens, Gil Rilov, Stelios Katsanevakis, Ewan Hunter   +20 more
wiley   +1 more source