Results 21 to 30 of about 1,013,931 (235)

An Experimental Investigation of the Influence of Flow and Pipe Diameter on the Fire Extinguishing Efficiency of Nitrogen Injection in a Narrow Confined Underground Space

open access: yesFire, 2022
In this study, an underground pipe gallery was taken as the research subject to explore the influence of nitrogen injection flow rate and pipe diameter on the fire extinguishing efficiency in an underground narrow confined space.
Guowei Zhang   +4 more
doaj   +1 more source

Mechanical oscillation and cooling actuated by the optical gradient force [PDF]

open access: yes, 2009
In this work we combine the large per-photon optical gradient force with the sensitive feedback of a high quality factor whispering-gallery microcavity.
Jessie Rosenberg   +6 more
core   +2 more sources

Spin bath maser in a cryogenically cooled sapphire whispering gallery mode resonator [PDF]

open access: yesPhysical Review B, 2013
We report the observation of a mechanism of maser generation in an ensemble of inter-coupled, inhomogeneously broadened two-level systems, enhanced by high quality factor electromagnetic cavity modes. In this previously unobserved form of population inversion, an inseparable quantum system leads to cavity-enhanced stimulated emission arising from ...
Bourhill, J.   +5 more
openaire   +2 more sources

Research and analysis of a thermal optimisation design method for aluminium alloy pistons in diesel engines

open access: yesCase Studies in Thermal Engineering, 2023
To further improve the thermal state of the piston for better thermal design, a multi-objective optimisation algorithm was used in this paper to find the best combination of design variables.
Yang Liu   +5 more
doaj   +1 more source

Effect of flow in the circular 90-degree curved nozzles on ejecting oil jet behavior

open access: yesJournal of Fluid Science and Technology, 2021
In general, technical methods for improving the thermal efficiency of an engine increase the heat load on peripheral components. Recently, a piston cooling gallery equipped with a flow path has been developed.
Mikimasa KAWAGUCHI   +7 more
doaj   +1 more source

Compensation of thermal nonlinearity effect in optical resonators [PDF]

open access: yes, 2011
Thermal nonlinearity is known to cause bistability in Whispering Gallery Mode (WGM) resonators and to destabilize the red slope of the Lorentzian resonant curve.
Chen, Tong   +3 more
core   +1 more source

MOSFET Selection for a 18ka modular power converter for HL-LHC inner triplet

open access: yesPower Electronic Devices and Components, 2023
The upgrade of the Large Hadron Collider (LHC) at CERN towards the High Luminosity-LHC (HL-LHC) presents different challenges, among them, the upgrade of the power converters associated to the inner triplet magnets to reach the required rated current of ...
N. Wassinger   +5 more
doaj   +1 more source

The Building That Teaches: Exploring Augmented Reality Affordances in Academic Incubators

open access: yesJournal of Interior Design, EarlyView., 2022
ABSTRACT Efforts to enhance the experience of interior environments have led to experimentation with augmented reality (AR) technology to encourage users to participate in the built space using their mobile devices. To investigate the role of AR technologies in interior design experiences, we highlight the interdisciplinary design of a mobile AR ...
Leah Scolere, Laura Malinin
wiley   +1 more source

Simultaneous cooling of coupled mechanical oscillators using whispering gallery mode resonances

open access: yesOptics Express, 2016
We demonstrate simultaneous center-of-mass cooling of two coupled oscillators, consisting of a microsphere-cantilever and a tapered optical fiber. Excitation of a whispering gallery mode (WGM) of the microsphere, via the evanescent field of the taper, provides a transduction signal that continuously monitors the relative motion between these two ...
Li, Ying Lia   +2 more
openaire   +5 more sources

The application of thermal analysis to the study of epoxy–clay nanocomposites [PDF]

open access: yes, 2016
This is a copy of the author 's final draft version of an article published in the journal Journal of thermal analysis and calorimetry. The final publication is available at Springer via http://dx.doi.org/10.1007/s10973-016-5278-0The development of ...
Hutchinson, John M.
core   +2 more sources

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