Results 131 to 140 of about 1,580,055 (393)

Self-induced transparency in a perfectly absorbing chiral second-harmonic generator

PhotoniX, 2022
Transparency and perfect absorption are two contradictory terms; a perfect absorber never permits waves to transmit through. However, this statement only remains true in the linear regime, where the nonlinearity has been omitted and the physical system ...
Jiankun Hou, Jintian Lin, Jiefu Zhu, Guolin Zhao, Yao Chen, Fangxing Zhang, Yuanlin Zheng, Xianfeng Chen, Ya Cheng, Li Ge, Wenjie Wan   +10 more
doaj   +1 more source

Subjective evaluation of an emerging theory of low-frequency sound source localization in closed acoustic spaces [PDF]

, 2014
An earlier reported theory of low-frequency sound-source localization within closed acoustic spaces proposed that virtual image acuity is strongly dependent on sufficient inter-arrival time between a direct sound and its first reflection.
Hawksford, Malcolm O. J., Hill, Adam J.
core  

Effect of Painting on the Sound Absorption of Acoustic Materials [PDF]

The Journal of the Acoustical Society of America, 1940
A brief discussion is given of the properties of a material which cause it to absorb sound. Photographs are shown and the results of sound absorption measurements before and after painting are given for a number of different types of material. A brief discussion is given of the kind of paint which can be used and how it should be applied.
openaire   +3 more sources

Living Microalgae‐Based Magnetic Microrobots for Calcium Overload and Photodynamic Synergetic Cancer Therapy

Advanced Healthcare Materials, EarlyView.
A magnetic microrobot fabricated by Spirulina platensis is proposed to accumulate in tumor regions and generate in situ high calcium concentration and sufficient oxygen. These characteristics of the microrobot present a strategy for triggering calcium overload therapy and chlorophyll‐mediated photodynamic therapy, and such combination resulted in a ...
Shuai Jiang, Bo Hao, Xin Song, Yihang Jiang, Junjia Guo, Yuqiong Wang, Qinglong Wang, Xin Wang, Tiantian Xu, Xinyu Wu, Kai Fung Chan, Philip Wai Yan Chiu, Li Zhang   +12 more
wiley   +1 more source

The Acoustic Characterization of Broom Fibers

Journal of Natural Fibers, 2017
Natural materials are becoming a valid alternative to traditional synthetic ones for sound absorption applications. In this paper, the acoustic properties of broom fibers are reported and discussed.
Umberto Berardi, Gino Iannace, Maria Di Gabriele   +2 more
doaj   +1 more source

Axisymmetric Scattering of p Modes by Thin Magnetic Tubes [PDF]

, 2011
We examine the scattering of acoustic p-mode waves from a thin magnetic fibril embedded in a gravitationally stratified atmosphere. The scattering is mediated through the excitation of slow sausage waves on the magnetic tube, and only the scattering of the monopole component of the wavefield is considered.
arxiv   +1 more source

Classical wave experiments on chaotic scattering

, 2005
We review recent research on the transport properties of classical waves through chaotic systems with special emphasis on microwaves and sound waves. Inasmuch as these experiments use antennas or transducers to couple waves into or out of the systems ...
Berry M V, Berry M V, Blatt J M, Casati G, Cotoni V, Davy J, Davy J L, Davy J L, Ebeling K J, Ebeling K J, Fano U, Fyodorov Y V, Genack A Z, Gorin T, Gorin T Seligman T H Weaver R L, Graff K F, Gutzwiller M C, H-J Stöckmann, Hemmady S Zheng X Antonsen T M Ott E Anlage S M, Hul O, Jalabert R A, Kim Y H, Kino G S, Kuhl U Höhmann R Main J Stöckmann H J, Kutruff H, Mahaux C, Miller W H, Porter C E, R Weaver, Richter A, Rollwage M, Rotter S Kuhl U Libisch F Burgdoerfer J Stöckmann H J, Saichev A I, Savin D V, Schardt P, Schroeder M, Schroeder M R, Schäfer R, Schäfer R, Sommers H J, Stöckmann H J, Stöckmann H J, Teitsworth S W Reguera D Platero G Bonilla L L Rubi J M, U Kuhl, Urbina J D, Zheng X Hemmady S T M A Anlage S M Ott E, Šeba P   +46 more
core   +1 more source

Ischemic Myocardium Targeting Peptide‐Guided Nanobubbles for Multimodal Imaging and Treatment of Coronary Microvascular Dysfunction

Advanced Healthcare Materials, EarlyView.
Nanobubbles functionalized with indocyanine green and ischemic myocardium‐targeting peptide effectively target cardiomyocytes and enable the multimodal (fluorescence, ultrasonic, and photoacoustic) imaging of ischemic myocardium in mice with coronary microvascular dysfunction (CMD).
Bo Yu, Ziwei Pang, Jing Zhao, Jingyi Xue, Hsuan Lo, Tiancheng Gu, Ping Zhang, Jiawei Tian, Guo‐Qing Du   +8 more
wiley   +1 more source

Directional Sound Field and Spatial Speech Decay: Impact of Sound Absorption and Screen Height in Performance Spaces and Open-Plan Offices

International Journal of Innovative Science and Research Technology
This study investigates the spatial decay rate of speech in performance spaces and open-plan offices, focusing on the effects of sound absorption and screen height.
Olalekan Samuel Agbeniyi, Rotimi Olaosebikan   +1 more
semanticscholar   +1 more source