In this work, we propose polarimetry experiments to search for low-mass (sub-eV) bosonic field dark matter, including axions and axionlike particles. We show that a configuration consisting of thick birefringent solid inside Fabry-P\'erot cavity is exceptionally sensitive scalar which may cause oscillatory variations in the solid's thickness refractive index. addition, reconfiguration experimen...

Abstract. Labyrinth-shape quarter wavelength tubes are numerically studied under plane wave excitation, with analytical comparison. These labyrinth resonators (LRs) tuned at 60, 90 and 120 Hz, their sound absorption response exhibits maximum peak those frequencies high fidelity performance. objects can absorb tonal sources very low frequencies, an incredibly competitive thickness, resulting in ...

This paper proposes a dielectric slabs-based lens for millimeter-wave beamforming systems. The proposed is based on the graded steps of effective refractive index semi-spherical lens. It consists multiple slabs that match selected gradient index. These have same thicknesses and different radii. slab thickness in this should not exceed quarter operating wavelength to keep similar original A horn...

it is very important to study and simulate s-wave structure for near surface (alluvium parts, in particular) owing to its direct relationship to urban facilities in geotechnical and earthquake engineering studies. so, in seismic microzonation, the first step is to study and identify s-wave pattern in alluvium in order to categorize different parts of cites according to s-wave velocity. current ...

Ultrasonic guided wave inspection is much more efficient than traditional point-bypoint examination. Guided waves can propagate over long distances from a single position, and therefore is a good method of evaluating thickness degradation, especially for large-area structures such as pipes and vessels. In this paper, guided wave thickness measurement potential is studied utilizing a peak freque...

OBJECTIVE To compare ocular structures of Quarter Horses homozygous for hereditary equine regional dermal asthenia (HERDA) with those of Quarter Horses not affected by HERDA (control horses) and to determine the frequency of new corneal ulcers for horses with and without HERDA during a 4-year period. DESIGN Cohort study of ocular structures and retrospective case series of horses with and wit...