Incident angle of saltating particles plays a very important role in aeolian events. In this paper, the incident angles of sand particles near the sand bed were measured in wind tunnel. It reveals that the incident angles range widely from 0° to 180° and thereby the means of angles are larger than published data. Surprisingly, it is found the proportion that angles of 5°-15° occupy is far below...

We present a 55-year-old male with severe mitral regurgitation who underwent cardiology investigation for palpitations and worsening dyspnea (NYHA functional class II) and subsequently a minimally invasive mitral valve (MIMV) repair through right minithoracotomy (RT). The patient’s height was 175 cm tall and weighed 76 kg. The patient’s cardiovascular risk factors were hypertension and history ...

Ballistic electron emission microscopy has been used to study thin aluminum oxide tunnel junction barriers formed both by magnetron sputter deposition and thermal evaporation. We have found that the barriers made by oxidation of evaporated Al become fully formed at a significantly thinner mean deposited thickness ~;6 Å! than junctions made by sputter deposition. The effective barrier height of ...

We propose a setup to measure the lifetime of the parity of a pair of Majorana bound states. The proposed experiment has one edge Majorana state tunnel coupled to a quantum dot, which in turn is coupled to a metallic electrode. When the Majorana fermions overlap, even a small relaxation rate qualitatively changes the nonlinear transport spectrum, and for strong overlap the lifetime can be read ...

We study the innuence of a tunnel barrier on the quantum transport through a circular cavity. Our analysis in terms of classical trajectories shows that the semiclassical approaches developed for ballistic transport can be adapted to deal with the case where tunneling is present. Peaks in the Fourier transform of the energy-dependent transmission and reeection spectra exhibit a nonmonotonic beh...

Modern technology has been used to build tunnels in recent years by means of drilling machines (TBM) that were used for civil engineering work in large cities to reduce the harmful effects of spending on the surface of the earth significantly. To build the tunnel, numerical modeling was used on the basis of the finite element method to predict stress behavior during the tunnel construction proc...

The individual and combined effect of a water mist system (WMS) longitudinal ventilation (LV) on the fire HRR, smoke temperature back-layering (BL) degree were explored in 3 m (width)×2.2 m(height)×30 (length) tunnel model. A series 39 tests has been conducted 6 configurations, varying velocity, volume flow rate nozzles arrangement. When WMS or LV is imposed individually, reduction HRR gets str...

Synthetic Aperture Radar (SAR) interferometry is a formidable technique to monitor surface deformation with millimeter detection resolution. This study applies the Persistent Scatter-Interferometric (PSInSARTM) measure ground subsidence related twin-tunnel excavation in downtown Los Angeles, USA. The PSInSARTM suitable for urban settings because areas have strong reflectors. twin tunnels Angele...

humic acid, which has hormone- like activity , not only enhances plant growth and nutrients uptake but also improve stress tolerance. to determine the effect of humic acid on the yield and vegetative characteristics of tomato an experiment was conducted with tomato cv. `isabela` in 2008 in a plastic tunnel at the agriculture faculty, guilan university using randomized completely design with fou...

The opencut tunnel is a kind of linear arch construction and new sand-prevention structure. In order to clarify the wind-proof mechanism tunnel, this paper seeks answer question whether Lin–Ce railway will be buried. paper, wind experiment combined with field investigation testing used systematically study sand resistance in an it verified burial possible. results show that airflow greater than...