Results 31 to 40 of about 523,551 (354)

Upconversion Photonic Doppler Velocimetry Based on Stimulated Brillouin Scattering

Photonics
Optical up-conversion photonic Doppler velocimetry (PDV) based on stimulated Brillouin Scattering (SBS) with an all-fiber link structure is proposed in this article. Because SBS limits the laser power transmitted by a fiber over long distances, the probe
Long Chen, Cangli Liu, Heli Ma, Longhuang Tang, Xing Jia, Tianjiong Tao, Shenggang Liu, Yongchao Chen, Xiang Wang, Jian Wu, Chengjun Li, Jidong Weng   +11 more
doaj   +1 more source

Prediction of anomalous LA-TA splitting in electrides

Matter and Radiation at Extremes, 2021
Electrides are an emerging class of materials with excess electrons localized in interstices and acting as anionic interstitial quasi-atoms (ISQs). The spatial ion–electron separation means that electrides can be treated physically as ionic crystals, and
Leilei Zhang, Hua Y. Geng, Q. Wu
doaj   +1 more source

D-Brane Interactions in a Gravitational Shock Wave Background

, 2004
We study D-branes in the background of a gravitational shock wave. We consider the case of parallel D-branes located on opposite sides with respect to the shock wave.
Amati D., C. PICCIONI, Callan C. G., Green M. B., L. GIRARDELLO, M. PORRATI, Sanchez N. G.   +6 more
core   +1 more source

3D‐Printed Architected Material for the Generation of Foam‐Based Protective Equipment

Advanced Engineering Materials, EarlyView.
This study investigates 3D‐printed architected structures as alternatives to traditional foams in protective gear. It focuses on customizing impact strength and damping through design and manufacturing integration. Testing shows these structures outperform conventional foams, offering enhanced customizability, lower weight, and tunable performance ...
Ali Zolfagharian, Gerard Bel Català, Daniel Saakes, Bernard Rolfe, Ian Gibson, Mehrshad Mehrpouya   +5 more
wiley   +1 more source

Near-full density enabled excellent dynamic mechanical behavior in additively manufactured 316L stainless steels

Materials & Design
Mechanical properties of additively manufactured alloys are momentously affected by the fabrication defects, thus limiting their applications in extreme conditions.
Yuan Wang, Xuhai Li, Xiaotian Yao, Qiyue Hou, Zhiguo Li, Fengchao Wu, Yuying Yu, Xuemei Li, Jianbo Hu   +8 more
doaj   +1 more source

Return to play after treating acute muscle injuries in elite football players with radial extracorporeal shock wave therapy

Journal of Orthopaedic Surgery and Research, 2021
Background To compare lay-off times achieved by treating acute muscle injuries in elite football players with a multimodal therapy approach that includes a specific protocol of almost daily radial extracorporeal shock wave therapy (rESWT) with ...
James P. M. Morgan, Mario Hamm, Christoph Schmitz, Matthias H. Brem   +3 more
doaj   +1 more source

Triggering Collapse of the Presolar Dense Cloud Core and Injecting Short-Lived Radioisotopes with a Shock Wave. I. Varied Shock Speeds

, 2009
The discovery of decay products of a short-lived radioisotope (SLRI) in the Allende meteorite led to the hypothesis that a supernova shock wave transported freshly synthesized SLRI to the presolar dense cloud core, triggered its self-gravitational ...
Alan P. Boss, Barsony, Bonnor, Boss, Boss, Cameron, Cameron, Cameron, Chevalier, Connelly, Crutcher, Dauphas, Desch, Elizabeth A. Myhill, Ellinger, Foster, Frank, Gaidos, Goswami, Gounelle, Gounelle, Gounelle, Harri A. T. Vanhala, Healey, Hester, Krot, Kudoh, Kunz, Lee, Lee, Leppanen, Looney, MacPherson, Marchenko, McKeegan, McKeegan, Morris, Mouschovias, Nakamura, Nittler, Oey, Ouellette, Patnaude, Poludnenko, Preibisch, Preibisch, Rauscher, Regelous, Sahijpal, Sahijpal, Sandell, Sandra A. Keiser, Sergei I. Ipatov, Shirley, Snider, Stone, Tachibana, Takigawa, Thrane, Trigo-Rodríguez, Truelove, Vanhala, Vanhala, Vanhala, Wadhwa, Wasserburg, Whalen, Williams, Williams, Yokogawa   +69 more
core   +1 more source

Advancing Wildfire‐Retardant Materials: Engineering Strategies for Direct and Indirect Suppression

Advanced Engineering Materials, EarlyView.
Here, the evolution, ecological impact, and performance of current fire‐retardant materials and suppression strategies are reviewed, offering an engineering perspective to address existing challenges and propose pathways for the development of more effective, scalable, and sustainable solutions to meet the demands of a changing climate. Wildfires cause
Changxin Dong, Samya Sen, Athena Kolli, Stewart G. Wilson, Eric Andrew Appel   +4 more
wiley   +1 more source

Novel Surface‐Based Bézier Metamaterials: A Higher Degree of Parametrization toward Tailoring the Effective Properties under Compression

Advanced Engineering Materials, EarlyView.
Cubic Bézier curves are used in the synthesis of novel surface‐based metamaterials with tunable mechanical properties. Surface‐based geometries are 3D printed and tested in compression. The resulting mechanical properties are correlated to changes in the shape of the base curve, with high potential in energy absorption through the adjustment of their ...
Alberto Álvarez‐Trejo, Enrique Cuan‐Urquizo, Armando Roman‐Flores   +2 more
wiley   +1 more source

Measurement of Ultra-High Speed by Optical Multistage Cascade Frequency Reduction Technology

Applied Sciences
In order to reduce the frequency of high-frequency Doppler signal light, the electronic bandwidth of a data acquisition system is reduced. This paper mainly describes the principle and experimental verification results of optical multistage cascade ...
Heli Ma, Long Chen, Wei Gu, Cangli Liu, Longhuang Tang, Xing Jia, Tianjiong Tao, Shenggang Liu, Yongchao Chen, Xiang Wang, Jian Wu, Chengjun Li, Dameng Liu, Jidong Weng, Huan Liu   +14 more
doaj   +1 more source