of an ultrasound trans-ducer array with plane wave excitation and a laser with pulse repetition frequency up to 2,000 Hz. Its ap-plication to real-time 3D photoacoustic imaging is demonstrated and a synthetic-aperture focusing technique is applied to improve the elevational focusing quality of the mechanically

Direct attachment of piezoelectric transducers on hot targets raise formidable challenges as piezoelectric materials will lose their piezoelectric characteristic at elevated temperature due to Curie temperature limitation. In this paper, an attempt was made to build an integrated probe for hot

photoreceptor and neural tissue. We applied is laser pulses of a Nd:YLF laser (527nm), at a repetition rate of 500Hz to porcine RPE. The light is absorbed in the RPE and by thermoelastic expansion, an optoacoustic (OA) signal will be generated which could be measured by an ultrasonic transducer. With this setup

optoacoustics to determine individually exposure times necessary to create reproducible lesions. METHODS. Optoacoustic temperature measurement relies on pressure waves that are excited in the retinal tissue by repetitive low-energy laser pulses. Signal amplitudes correlate with tissue temperature

Synthetic oligonucleotides containing repetitive TTAGGG motifs mimic the immunosuppressive activity of telomeric DNA. These suppressive oligonucleotides (Sup ODN) are effective in the treatment/prevention of various inflammatory and autoimmune diseases in mice. The therapeutic activity of Sup ODN

that concerns one particular event and repetitive temporal information. We adopt a symbolic approach relying on patterns and rules for the detection, extraction and annotation of temporal expressions; our method is based on the use of transducers. First evaluations have shown promising results. Since the visual

-low intracavity power to build up again. The optical switch is usually an acousto-optic modulator (AOM). A piezoelectric transducer bonded to a crystal sends acoustic waves through the crystal when excited by a RF signal. The spatially vary-ing index of refraction create an optical grating which deflects

Background Mechanical ventilation may induce harmful effects in the airways of critically ill patients. Nevertheless, the effects of cyclic stretching caused by repetitive inflation-deflation of the bronchial compartment have not been well characterized in humans. The objective of the present study

We modeled, designed, and built a 500-MHz acousto-optic mode locker with a diffraction efficiency of 28 % per 1 W drive power. The transducer is zinc oxide sputtered onto a sapphire substrate. A new figure of merit is defined for the mode-locker design, which indicates that sapphire is a good

of movement parameters was analyzed when the hairs were prodded against a force transducer. The rise time was 10-20 msec and the variability of the peak force was wit-hin-20 % of the steady-state force during repetitive prodding with various repetition rates. The von Frey thresholds were determined for 284