Results 61 to 70 of about 772,127 (393)

Development of Gas Dynamic Nozzles: A Preliminary Computational Study

Engineering Proceedings
The design and optimization of supersonic nozzles are of great interest in aerospace and propulsion system applications. Designing and maintaining a mechanically simple nozzle would be beneficial over the complex nozzles that are currently in use.
Prasad Savanur, Ganapuram Venu, G. N. Kumar, M. V. Ramaprasad, Padmavati K. Uttarwar   +4 more
doaj   +1 more source

“The Laryngectomee Guide” Philippine Edition

Philippine Journal of Otolaryngology Head and Neck Surgery, 2020
Dear Editor, I am happy to announce that “The Laryngectomee Guide” Philippine Edition is available now in paperback and eBook. The eBook is FREE. The translation from English to Tagalog was supervised by Professor Alfredo Pontejos Jr.
Itzhak Brook
doaj   +1 more source

Self-force of a point charge in the space-time of a symmetric wormhole

, 2007
We consider the self-energy and the self-force for an electrically charged particle at rest in the wormhole space-time. We develop general approach and apply it to two specific profiles of the wormhole throat with singular and with smooth curvature.
A. R. Khabibullin, E. Poisson, H. Bateman, Ilya V. Bakhmatov, M. Visser, N. D. Birrell, N. R. Khusnutdinov, Nail R. Khusnutdinov   +7 more
core   +1 more source

Thraxions: ultralight throat axions [PDF]

Journal of High Energy Physics, 2018
A bstractWe argue that a new type of extremely light axion is generically present in the type IIB part of the string theory landscape. Its mass is suppressed by the third power of the warp factor of a strongly warped region (Klebanov-Strassler throat ...
A. Hebecker, Sascha Leonhardt, Jakob Moritz, A. Westphal   +3 more
semanticscholar   +1 more source

High‐Entropy Alloy Design Toward Cobalt Substitution for High Hardness and Low Wear Rate Using X–Cr–Fe–Mn–Ni System

Advanced Engineering Materials, EarlyView.
This study explores the replacement of cobalt using the high‐entropy alloy design strategy for wear‐resistant components operating at high temperatures. Starting from the Cantor alloy, cobalt is substituted with Cu, Al, V, or Mo. Metallurgical and tribological analyses reveal that aluminum, vanadium, and molybdenum effectively strengthen the developed ...
Rafaël Jénot, Laurent Peltier, Fodil Meraghni, Mathieu Marquer, Oriane Baulin, Clotilde Macke‐Bart   +5 more
wiley   +1 more source

Cholesterol in mRNA‐Lipid Nanoparticles can be Replaced with the Synthetic Mycobacterial Monomycoloyl Glycerol Analogue MMG‐1

Advanced Functional Materials, EarlyView.
This study demonstrates that cholesterol in messenger RNA‐lipid nanoparticles (mRNA‐LNPs) can be completely replaced with an immunopotentiating lipid, i.e., a synthetic analogue of the C‐type lectin receptor agonist monomycoloyl glycerol (MMG‐1), without compromising physicochemical properties, in vivo transfection efficiency, and immunogenicity of the
Abhijeet G. Lokras, Saahil S. Baghel, Rune F. Jensen, Aneesh Thakur, Henrik Franzyk, Oskar Thofte, Marco Herrera‐Barrera, Madeleine Landry, Melike Ongun, Ahmad Tami, Marlene P. Thanthrige, Eva Callens, Corinne Beinat, Thomas Rades, Søren R. Paludan, Kristian Riesbeck, Ida Rosenkrands, Dennis Christensen, Gabriel K. Pedersen, Camilla Foged   +19 more
wiley   +1 more source

Unsteady Numerical Investigation into the Impact of Isolator Motion on High-Mach-Number Inlet Restart via Throat Adjustment

Aerospace
This paper focuses on exploring the variable throat-assisted restart method for high-Mach-number inlets. A two-dimensional adjustable throat hypersonic inlet was designed, and unsteady numerical simulations were carried out on its restart process, which ...
Hongyu Tang, Yuan Liu, Yongfei Cao, Liangjie Gao, Zhansen Qian   +4 more
doaj   +1 more source

3+1-dimensional thin-shell wormhole with deformed throat can be supported by normal matter

, 2015
From physics standpoint exotic matter problem is a major difficulty in thin-shell wormholes (TSWs) with spherical / cylindrical throat topologies. We aim to circumvent this handicap by considering angular dependent throats in $3+1-$dimensions.
Halilsoy, M., Mazharimousavi, S. Habib
core   +1 more source

Absorption of Scalars by Extended Objects [PDF]

, 1997
We derive the low energy absorption cross section of minimal scalars for a very generic class of geometries, that includes, among others, black holes, strings, $p$-branes, as well as intersecting brane configurations.
Callan, Callan, Das, Das, Das, Dhar, Duff, Gibbons, Gubser, Gubser, Gubser, Halyo, Hawking, Holzhey, Horowitz, Klebanov, Maldacena, Roberto Emparan, Sen, Strominger   +19 more
core   +2 more sources

A Bespoke Programmable Interpenetrating Elastomer Network Composite Laryngeal Stent for Expedited Paediatric Laryngotracheal Reconstruction

Advanced Functional Materials, EarlyView.
A programmable interpenetrating double‐network architecture, created via 3D‐TIPS printing and resin infusion, synergistically combines thermoplastic and thermosetting elastomers to balance structural rigidity and surface softness—crucial for paediatric laryngeal stents.
Elizabeth F. Maughan, Lei Wu, Dong Zhang, Linxiao Wu, Graca Ferreira Vaz Pinto Mendes, Wanqiao J. Tu, Heping Ma, Toby J. Proctor, Colin R. Butler, Thomas Kjærgaard, Mark W. Lowdell, Martin A. Birchall, Robert E. Hynds, Richard Hewitt, Wenhui Song   +14 more
wiley   +1 more source