نتایج جستجو برای: unimorph piezoelectric vibrator

تعداد نتایج: 14547  

1996
L. N. Reddi H. Wu

Prior investigations by the principal author evaluated the feasibility of mobilizing non-aqueous phase liquid (NAPL) ganglia by inducing vibrations in a soil-NAPL-water medium. In this paper, results from bench-scale experiments are reported to provide a practical understanding of the impact of vibrations (induced with a probe-type vibrator) on relative density of the medium and on the ganglia ...

2011
M. V. Nesterenko V. A. Katrich Y. M. Penkin S. L. Berdnik V. I. Kijko V. N. Karazin Mikhail V. Nesterenko

The problem of excitation of electromagnetic fields by a material body of finite dimensions in presence of coupling hole between two arbitrary electrodynamic volumes is formulated. The problem is reduced to two-dimensional integral equations for the surface electric current on a material body and the equivalent magnetic current on a coupling hole. A physically correct transition from the initia...

2011
Dorothy Concepcion Frank Johannes Yuan Hung Lo Jay Yao Jerry Fong Bruce A. Hamilton George Palade

Phosphatidylinositol transfer proteins (PITPs) mediate lipid signaling and membrane trafficking in eukaryotic cells. Loss-of-function mutations of the gene encoding PITPα in mice result in a range of dosage-sensitive phenotypes, including neurological dysfunction, neurodegeneration and premature death. We have previously reported genetic suppression of a strong hypomorphic allele, vibrator, by ...

Journal: :Genetics 2011
Dorothy Concepcion Frank Johannes Yuan Hung Lo Jay Yao Jerry Fong Bruce A Hamilton

Phosphatidylinositol transfer proteins (PITPs) mediate lipid signaling and membrane trafficking in eukaryotic cells. Loss-of-function mutations of the gene encoding PITPα in mice result in a range of dosage-sensitive phenotypes, including neurological dysfunction, neurodegeneration, and premature death. We have previously reported genetic suppression of a strong hypomorphic allele, vibrator, by...

Journal: :Journal of the American Academy of Audiology 1993
J D Durrant R Hyre

To further elucidate nuances of bone-conduction (BC) stimulation, particularly as they may pertain to BC-elicited auditory brainstem responses (ABRs), real head measurements were made of vibratory responses to BC clicks. A miniature accelerometer was held firmly against the skull near a bone vibrator applied to the mastoid, to the opposite mastoid, and to the forehead. Measurements also were ma...

Journal: :Pro-fono : revista de atualizacao cientifica 2006
Vanessa Sabino de Freitas Kátia Freitas de Alvarenga Marina Morettin Elidiane Fugiwara de Souza Orozimbo Alves Costa Filho

BACKGROUND bone conduction auditory brainstem responses (ABR) in normal hearing individuals. AIM to evaluate the clinical applicability of bone conduction ABR, characterizing normality and determining an assessment protocol. METHOD participants of this study were 22 individuals with normal hearing (20dB NA), with ages between 20 and 30 years, 14 female and 8 male. All individuals were asses...

2017
Mikhail V. Nesterenko Sergey L. Berdnik Victor A. Katrich Yuriy M. Penkin

Linear vibrator and slot radiators, i.e., radiators of electric and magnetic type, respec‐ tively, are widely used as separate receiver and transmitter structures, elements of an‐ tenna systems, and antenna-feeder devices, including combined vibrator-slot structures. Widespread occurrence of such radiators is an objective prerequisite for theoretical analysis of their electrodynamic characteris...

2014
Jiang Wu Yosuke Mizuno Marie Tabaru WU JIANG

Having natures of low speed, high torque and quick response characteristics, ultrasonic motors (USM) are applied in robot, precision machine and optical instruments. A lightweight actuator is essential to decrease the total weight and increase the operability. Although USMs, in general, are superior to conventional electromagnetic motor in torque/weight ratio, lighter motor is demanded. In this...

2015
Samuel Shian Katia Bertoldi David R. Clarke

Inchworm based on the voltage actuation of dielectric elastomer actuators (DEAs) are amongst the simplest types of robots. We demonstrate a proof-of-concept inchworm robot that incorporates a few aligned fibers to suppress undesirable actuator bulging and more effectively convert the bending of a dielectric elastomer unimorph to forward motion. Finite element modeling confirms the role of the f...

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