Ultrasound-modulated optical tomography (UOT) has the potential to reveal optical contrast deep inside soft biological tissues at an ultrasonically determined spatial resolution. The optical imaging depth reported so far has, however, been limited, which prevents this technique from broader applications. Our latest experimental exploration has pushed UOT to an unprecedented imaging depth. We de...

Depth at homogeneous or weakly-textured image areas is difficult to obtain because such image areas suffer the well-known correspondence problem. In this paper, we propose a voting model that predicts the depth at such image areas from the depth of bounding edge-like structures. The depth at edge-like structures is computed using a feature-based stereo algorithm, and is used to vote for the dep...

We have studied patterns of electrically-driven convective vortices in thin freely-suspended lms of smectic liquid crystal at and above the onset of con-vection. We present measurements of the convective amplitude above onset, the spatial variation of the amplitude due to the presence of end walls, and the relaxation of the amplitude following a sudden change in the experimental control paramet...

The Point to multipoint wireless distribution is the most effective and affordable modality to deliver data to a high number of terminals distributed randomly in a wide area. The use of high density small cells, mandatory to increase the throughput per users, maintaining terminals at sub-6 GHz frequency, needs capillary backhaul networks that fibers cannot effectively provide. The TWEETHER proj...

Three cone index (CI) penetration probes recorded to a depth of 76.2 cm (30 in.) and a soil sample was collected and analyzed for moisture content at 81 locations along a transect measuring approximately 323 m (1060 ft) in length. An average maize plant yield was assigned to each location based on hand harvested ears. The three probes at each location were averaged to obtain a single profile of...

Some of arid regions problems of Iran are saline and sodic soils. In improvement and reclamation of Iranian arid rangelands, some foreign species of Atriplex had been imported and adapted for many years ago. The most adapted species was Atriplex canescens. At the present research, some environmental factors, vegetative characteristics (Na, Ca, Mg and K), soil properties (moisture, EC, pH, solut...

We discuss an effective numerical method for solving the transport equations for cosmic ray nucleons in the atmosphere. It is demonstrated that the nucleon attenuation lengths are strongly energy and depth dependent due to the non-power-law behavior of the primary spectrum, growth of the total inelastic cross sections with energy, and scaling violation in the nucleon-nucleus interactions. The n...

We have developed high-speed and high-resolution spectral domain optical coherence tomography at 1.3 µm using an InGaAs line-scan camera and a broadband light source with the bandwidth of 170 nm that produces a theoretical axial resolution of 4.4 µm in air. We compared axial resolutions from point spread functions (PSFs) and depth ranges while changing the full spectral bandwidth detected by th...

In this paper we discuss results of MgB2 thin films deposition for the hot-electron bolometer (HEB) application. For this purpose a custom made hybrid physical-chemical vapour deposition (HPCVD) system was built. For films thicknesses d in the 15-45nm range the critical temperatures were from 34K to 40K. For bridges as narrow as 500nm the critical current density was >107A/cm2 indicating a high...