Results 31 to 40 of about 219,678 (296)
Evaluation of strategies for reducing taxi-out emissions at airports [PDF]
, 2010 Aircraft taxiing on the surface contribute significantly to the fuel burn and emissions at airports. This paper is aimed at estimating the baseline fuel burn and emissions from taxi-out processes at airports, evaluating the potential benefits of ...
Balakrishnan, Hamsa, Deonandan, Indira
core +1 more source
Breed-and-burn fuel cycle in molten salt reactors
EPJ Nuclear Sciences & Technologies, 2019 The operation of a reactor on an open but self-sustainable cycle without actinide separation is known as breed-and-burn. It has mostly been envisioned for use in solid-fueled fast-spectrum reactors such as sodium-cooled fast reactors.
Hombourger Boris +2 more
doaj +1 more source
Optimality conditions applied to free-time multi-burn optimal orbital transfers
, 2016 While the Pontryagin Maximum Principle can be used to calculate candidate extremals for optimal orbital transfer problems, these candidates cannot be guaranteed to be at least locally optimal unless sufficient optimality conditions are satisfied. In this
Chen, Zheng
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Forest Fire Risk Assessment: An Illustrative Example from Ontario, Canada
Journal of Probability and Statistics, 2010 This paper presents an analysis of ignition and burn risk due to wildfire in a region of Ontario, Canada using a methodology which is applicable to the entire boreal forest region.
W. John Braun +4 more
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Optimal speed profile generation for airport ground movement with consideration of emissions [PDF]
, 2015 Emissions during the ground movement are mostly calculated based on International Civil Aviation Organisation (ICAO) emission databank. The fuel flow rate is normally assumed as a constant, hence the emission index.
Chen, Jun +2 more
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Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production
Advanced Functional Materials, EarlyView.Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons +11 more
wiley +1 more source
3D Cruise Trajectory Optimization Inspired by a Shortest Path Algorithm
Aerospace, 2020 Aircrafts require a large amount of fuel in order to generate enough power to perform a flight. That consumption causes the emission of polluting particles such as carbon dioxide, which is implicated in global warming.
Alejandro Murrieta-Mendoza +2 more
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Ecosphere, 2022 Anticipating fire behavior as climate change and fire activity accelerate is an increasingly pressing management challenge in fire‐prone landscapes. In subalpine forests adapted to infrequent, stand‐replacing fire, self‐limitation of burn severity in ...
Kristin H. Braziunas +2 more
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Measures to reduce pollutant emissions from taxiing aircraft at Belgrade airport [PDF]
Tehnika, 2020 This paper presents the analysis o f measures to reduce pollutant emissions o f taxiing aircraft at Belgrade Airport, motivated by one o f the Flighpath 2050 goals that aircraft movements should be emission-free when taxiing.
Mirković Bojana D., Ganić Emir M.
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Reevaluating the Activity of ZIF‐8 Based FeNCs for Electrochemical Ammonia Production
Advanced Functional Materials, EarlyView.Though receiving much attention, the field of electrochemical nitrogen reduction reaction (eNRR) to ammonia is marked by doubts about whether this reaction is possible in aqueous media. This work sheds light on this question for iron single‐atom on N‐doped carbon (FeNC) catalysts—a class of well‐known catalysts that is also worth testing for the sister
Caroline Schneider +6 more
wiley +1 more source