Results 101 to 110 of about 633,054 (390)

Pathways to net-zero emissions from aviation

open access: yesNature Sustainability, 2023
Candelaria Bergero   +5 more
semanticscholar   +1 more source

Graphene/h‐BN/ReS2 Heterostructure Operating in Fowler−Nordheim Tunneling Regime for Polarization‐Sensitive Fast Photodetector

open access: yesAdvanced Electronic Materials, EarlyView.
The authors demonstrate a bias voltage‐dependent anisotropic tunneling behavior by designing a ReS2‐based heterojunction operating in the Fowler–Nordheim tunneling regime. The device exhibits a dichroic tunneling current that surpasses the intrinsic anisotropy of ReS2, offering a new strategy to amplify directional responses in 2D materials for ...
Tianyi Zhou   +12 more
wiley   +1 more source

System analysis of the properties of discrete and oriented structure surfaces

open access: yesAviation, 2014
A complex study of the properties and characteristics of discrete structure surfaces with mechanically formed dimples has been carried out. It is shown that the combination of scientific research on friction and wear processes in different scientific and
Volodymyr Marchuk   +2 more
doaj   +1 more source

Quantifying the land‐use change due to soybean‐based biodiesel in the United States

open access: yesApplied Economic Perspectives and Policy, EarlyView.
Abstract We quantify the impact of soybean oil‐based biodiesel production on US cropland, using a method that accounts for the intermediate effect of soybean crushing facilities. Based on U.S. Environmental Protection Agency data for biodiesel production and proprietary data for soybean crushing facilities over 2011–2020, we find that the elasticities ...
Ruiqing Miao   +5 more
wiley   +1 more source

Two approaches to the description of acoustic emission signals in the kinetic model of composite destruction / Du požiūriai apibūdinant akustinės emisijos signalą kompozitinės medžiagos destrukcijos kinetiniame modelyje

open access: yesAviation, 2011
Acoustic emission signals in non-coherent addition of waves and coherent addition of displacement were analysed. It is shown that for non-coherent addition of waves the area under a curve of a temporary course of acoustic emission intensity does not ...
Sergey Filonenko   +2 more
doaj   +1 more source

Catalytic Approaches for CO2 Conversion to Value‐Added Products: An Overview of Life Cycle Assessment Studies

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
The catalytic conversion of CO2 into value‐added products provides an emerging strategy for reducing carbon emissions and improving environmental performance. This review compares different Life Cycle Assessment studies to evaluate the environmental impacts of CO2 conversion, focusing on the main challenges, technical limitations, and potential ...
Anastasia Pappa   +3 more
wiley   +1 more source

Impact of variable geometry miniflaps on sailplane flight characteristics

open access: yesAviation, 2017
Miniflaps (also known as mini-TED, active Gurnay flaps, etc.) located at the wing trailing edge enable to increase wing lift and reduce the aerodynamic drag.
Peep Lauk   +2 more
doaj   +1 more source

Perspective for Aviators [PDF]

open access: yesAmerican Journal of Ophthalmology, 1919
This paper discusses the peculiar conditions under which aviators are compelled to judge of distance, and raises the question whether the tests that have been relied on to determine fitness for the aviation service are sufficient.
openaire   +3 more sources

Sustainable hydrogen energy in aviation – A narrative review

open access: yesInternational journal of hydrogen energy, 2023
T. Yusaf   +6 more
semanticscholar   +1 more source

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