Results 21 to 30 of about 219,678 (296)

Environmental Impact Assessment, on the Operation of Conventional and More Electric Large Commercial Aircraft [PDF]

, 2013
Global aviation is growing exponentially and there is a great emphasis on trajectory optimization to reduce the overall environmental impact caused by aircraft. Many optimization techniques exist and are being studied for this purpose.
Lawson, Craig P., Sabatini, Roberto, Seresinhe, R.   +2 more
core   +1 more source

Experimental investigation of emission characteristics based on new alcohol-based gasoline fuel

Advances in Mechanical Engineering, 2017
This article chose the new type alcohol-based fuel as the engine fuel, realized lean burn in a CA4GA5 engine, and got the lean burn limit to 20.6. Taking the gasoline as equivalent fuel, and according to 10%, 20%, and 30% volume proportion of alcohol ...
Wen Zhang, Zhijun Li, Penghao Jiao, Boxi Shen, Hao Wang, Hongjie Zhang   +5 more
doaj   +1 more source

Charring temperatures are driven by the fuel types burned in a peatland wildfire

Frontiers in Plant Science, 2014
Peatlands represent a globally important carbon store; however, the human exploitation of this ecosystem is increasing both the frequency and severity of fires on drained peatlands.
Victoria A. Hudspith, Claire M. Belcher, Jonathan M. Yearsley, Jonathan M. Yearsley   +3 more
doaj   +1 more source

Reprocessing Exhaust Gas Xenon Isotope Correlation Spent Fuel Burn-Up Based on ORIGEN Code

He huaxue yu fangshe huaxue
Environmental sampling analysis technology is one of the safeguards measures used by International Atomic Energy Agency to detect undeclared nuclear materials and nuclear activities.
Sheng-hui HUANG, Chang-kun XU, Hao-dong SHAN, Yan CHEN, Li-li LI, Yong-gang ZHAO   +5 more
doaj   +1 more source

Thermonuclear burn-up in deuterated methane $CD_4$

, 2010
The thermonuclear burn-up of highly compressed deuterated methane CD$_4$ is considered in the spherical geometry. The minimal required values of the burn-up parameter $x = \rho_0 \cdot r_f$ are determined for various temperatures $T$ and densities ...
Alexei M Frolov, Avrorin E V, Cohen E R, Fraley G S, Frolov A M, Frolov A M, Frolov A M, Glasstone S, Korobeinikov V P, Landau L D   +9 more
core   +1 more source

Burn-up calculation of different thorium-based fuel matrixes in a thermal research reactor using MCNPX 2.6 code

Nukleonika, 2014
Decrease of the economically accessible uranium resources and the inherent proliferation resistance of thorium fuel motivate its application in nuclear power systems.
Gholamzadeh Zohreh, Hossein Feghhi Seyed Amir, Soltani Leila, Rezazadeh Marzieh, Tenreiro Claudio, Joharifard Mahdi   +5 more
doaj   +1 more source

Methodology of Fuel Burn Up Fitting in VVER-1000 Reactor Core by Using New Ex-Vessel Neutron Dosimetry and In-Core Measurements and its Application for Routine Reactor Pressure Vessel Fluence Calculations

EPJ Web of Conferences, 2016
Paper describes the new approach of fitting axial fuel burn-up patterns in peripheral fuel assemblies of VVER-1000 type reactors, on the base of ex-core neutron leakage measurements, neutron-physical calculations and in-core SPND measured data.
Borodkin Pavel, Borodkin Gennady, Khrennikov Nikolay   +2 more
doaj   +1 more source

Modeling of Pore Coarsening in the Rim Region of High Burn-up UO2 Fuel

Nuclear Engineering and Technology, 2016
An understanding of the coarsening process of the large fission gas pores in the high burn-up structure (HBS) of irradiated UO2 fuel is very necessary for analyzing the safety and reliability of fuel rods in a reactor.
Hongxing Xiao, Chongsheng Long
doaj   +1 more source

Design and Optimization of Ram Air–Based Thermal Management Systems for Hybrid-Electric Aircraft

Aerospace, 2020
Ram air–based thermal management systems (TMS) are investigated herein for the cooling of future hybrid-electric aircraft. The developed TMS model consists of all components required to estimate the impacts of mass, drag, and fuel burn on the aircraft ...
Hagen Kellermann, Michael Lüdemann, Markus Pohl, Mirko Hornung   +3 more
doaj   +1 more source

Delayed fast neutron as an indicator of burn-up for nuclear fuel elements

Nuclear Engineering and Technology, 2021
Feasibility study of burn-up analysis and monitoring using delayed fast neutrons was investigated at Missouri University of Science and Technology Reactor (MSTR).
T. Akyurek, S.B. Shoaib, S. Usman
doaj   +1 more source