Results 21 to 30 of about 219,799 (293)

Fuel Burn and Emissions Reduction Potential of Low Power/Low Drag Approaches [PDF]

, 2011
Changing aircraft operational procedures is one strategy that can be used to reduce fuel burn and mitigate environmental impacts of aviation in relatively short timeframes with existing aircraft types.
Dumont, Jean-Marie, Hansman, Robert J., Jr., Hansman, Robert J., Jr., Hansman, Robert J., Jr., Reynolds, Thomas G.   +4 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

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

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

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
core   +3 more sources

The trade-off between taxi time and fuel consumption in airport ground movement [PDF]

, 2012
Environmental impact is a very important agenda item in many sectors nowadays, which the air transportation sector is also trying to reduce as much as possible.
A Binder, B Pesic, C Lesire, DB Rappaport, Edmund K. Burke, EL Lawler, EW Dijkstra, H Balakrishnan, H Khadilkar, J Chen, J Chen, J García, JAD Atkin, JAD Atkin, JAD Atkin, JAD Atkin, Jason A. D. Atkin, JB Gotteland, JCN Climaco, JG Herrero, Jun Chen, JW Smeltink, JY Yen, K Schüpbach, MEJ Stettler, P Burgain, Paul Stewart, PC Roling, R Cassell, R Deau, Stefan Ravizza, T Nikoleris, Á Marín, Á Marín   +33 more
core   +2 more sources

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