Results 81 to 90 of about 1,273,058 (405)

Evaluation of Motorcycles’ Handling and Stability Under Slalom Conditions

open access: yesMachines
Handling and stability are crucial performance characteristics of motorcycles. However, handling and stability are always in opposition, which leads to difficulty in evaluating the comprehensive performance of a motorcycle.
Haoxuan Sun   +5 more
doaj   +1 more source

Combustion instability sustained by unsteady vortex combustion [PDF]

open access: yes, 1985
The determination of an internal feedback mechanism which leads to combustion instability inside a small scale laboratory combustor is presented in this paper. During combustion instability, the experimental findings show that a large vortical structure
Smith, D. A., Zukoski, E. E.
core  

Investigation into background levels of small organic samples at the NERC Radiocarbon Laboratory [PDF]

open access: yes, 2007
Recent progress in preparation/combustion of submilligram organic samples at our laboratories is presented. Routine methods had to be modified/refined to achieve acceptable and consistent procedural blanks for organic samples smaller than 1000 g C.
Bryant, Charlotte L.   +6 more
core   +1 more source

Combustion of Fractal Distributions [PDF]

open access: yesarXiv, 1994
The advantages of introducing a fractal viewpoint in the field of combustion is emphasized. It is shown that the condition for perfect combustion of a collection of drops is the self-similarity of the distribution.
arxiv  

Chaotic Combustion in Spark Ignition Engines [PDF]

open access: yes, 2002
We analyse the combustion process in a spark ignition engine using the experimental data of an internal pressure during the combustion process and show that the system can be driven to chaotic behaviour. Our conclusion is based on the observation of unperiodicity in the time series, suitable stroboscopic maps and a complex structure of a reconstructed ...
arxiv   +1 more source

European Shock-Tube for High-Enthalpy Research Combustion Driver Qualification [PDF]

open access: yesarXiv, 2023
The ESTHER shock tube is a new state-of-the-art facility at Instituto Superior T\'ecnico designed to support future ESA planetary exploration missions. Its driver is a high-pressure combustion chamber using a mixture of He:H2:O2 ignited by a high-power Nd:YAG laser.
arxiv  

Selective Reduction Laser Sintering: A New Strategy for NO2 Gas Detection Based on In2O3 Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
This research utilizes selective reduction laser sintering (SRLS) to engineer In2O3 NPs for flexible NO2 sensors. The introduction of oxygen vacancy defects enhances sensor performance, offering excellent responsiveness, rapid response/recovery, superior selectivity, low detection limit, and long‐term stability.
Shaogang Wang   +8 more
wiley   +1 more source

Free Energy and Internal Combustion Engine Cycles [PDF]

open access: yesarXiv, 2012
The performance of one type (Carnot) of Internal Combustion Engine (ICE) cycle is analyzed within the framework of thermodynamic free energies. ICE performance is different from that of an External Combustion Engine (ECE) which is dictated by Carnot's rule.
arxiv  

Optical Hydrogen Sensing Materials for Applications at Sub‐Zero Temperatures

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates the viability of optical hydrogen sensors at temperatures as low as −60°C. Using advanced metal hydride materials, the sensors detect hydrogen with high sensitivity, speed, and stability across a wide range of concentrations. These findings open doors for safe hydrogen detection in extreme cold, enabling applications in aviation,
Ziqing Yuan   +4 more
wiley   +1 more source

Effects of Electric Fields on the Combustion Characteristics of Lean Burn Methane-Air Mixtures

open access: yesEnergies, 2015
In this work, the effects of the electric fields on the flame propagation and combustion characteristics of lean premixed methane–air mixtures were experimentally investigated in a constant volume chamber.
Jianfeng Fang   +4 more
doaj   +1 more source

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