Results 61 to 70 of about 529 (167)

Cicada-inspired fluoridated hydroxyapatite nanostructured surfaces synthesized by electrochemical additive manufacturing

open access: yesMaterials & Design, 2020
Recently, the cicada-inspired nanostructured surfaces have attracted much interest because they possess remarkable bactericidal ability. However, Gram-positive bacteria are less damageable by the nanopillar structure of a cicada wing surface compared to ...
Xiang Ge   +9 more
doaj   +1 more source

Формування акустичного поля у хвилеводі сферичним джерелом звуку [PDF]

open access: yes, 2020
У даній роботі приведено постановку та часткове вирішення проблеми формування повного акустичного поля у хвилеводі з симетричними м’якими границями.
Козак, А. В., Чайка, О. С.
core   +1 more source

Transmission of a Rayleigh wave across smooth large-scale surface irregularities [PDF]

open access: yes, 1988
The ray paths of Rayleigh waves in transmission across smooth large-scale surface irregularities are analyzed. Surface ray equations are derived, and calculations are carried out for several typical irregularities in the form of axisymmetrical recesses ...
Victor V. Krylov (1252356)
core  

Use of stochastically rough surfaces for control of traffic-induced ground vibrations [PDF]

open access: yes, 2017
In the present work, a potential use of stochastically rough surfaces for damping ground vibrations from rail and road traffic is considered. Two types of surface roughness are explored in this work: two-dimensional roughness formed by parallel grooves ...
Victor V. Krylov (1252356)
core  

45th Winter School on Wave and Quantum Acoustics and XLIVth Winter School on Environmental Acoustics and Vibroacoustics

open access: yesArchives of Acoustics, 2016
On behalf of Upper Silesian Division of the Polish Acoustical Society (main organizer) and Committee of Acoustics of the Polish Academy of Sciences (co-organizer) we are pleased to announce that it is nearing the end of preparations for the conduct ...
45th Winter School on WQA; XLIVth Winter School on EA&V
doaj   +1 more source

Metamorphic stretchable electronics [PDF]

open access: yes, 2018
Die jüngsten Fortschritte auf dem Gebiet der Elektronik wenden sich der Realisierung mechanischer dehnbarer Elektroniken zu. Diese sind in der Lage sich umzuwandeln um neue Formfaktoren anzunehmen.
Biswas, Shantonu
core  

Investigation of bulk acoustic microwaves excited by an interdigital transducer

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015
Excitation of bulk and surface acoustic waves with the interdigital transducer (IDT), which is deposited on the surface of a piezoelectric crystal, is widely used in the development of devices in acoustoelectronics and in the design of the microwave ...
O. G. Reshotka   +2 more
doaj   +1 more source

Contribution of Prof. I. Malecki to the Polish School of Acoustics

open access: yesArchives of Acoustics, 2014
A detailed study of the history of the Polish acoustics does not exist. The easiest way to present such a history might consist in describing the activity of separate teams, gathered around several leading personalities.
J. RANACHOWSKI
doaj  

Power Amplification and Selectivity in the Cochlear Amplifier

open access: yesArchives of Acoustics, 2013
This paper presents a new model that describes the physical phenomena occurring in an individual Outer Hair Cell (OHC) in the human hearing organ (Cochlea). The new model employs the concept of parametric amplification and piezoelectricity.
Piotr KIEŁCZYŃSKI
doaj  

Code division of signals in a direct chaotic scheme of information transmission [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
An important direction in the scientific activity of Yu. V. Gulyaev is research and development in the field of nonlinear dynamics and dynamic chaos. As for nonlinear dynamics in general, all the main areas of Yuri Vasilyevich’s scientific activity
Dmitriev, Aleksandr Sergeevich   +3 more
doaj   +1 more source

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