نتایج جستجو برای: circular opening
تعداد نتایج: 116665 فیلتر نتایج به سال:
An axi{symmetric problem for a penny{shaped crack bridged by bres is considered. The study is reduced to the analysis of a hy-persingular integral equation with respect to the relative crack{face separation over a circular domain occupied by crack. The special case of a large crack subjected to Mode{I loading is examined. A matched asymptotic expansions technique is used in order to estimate th...
The bulk of the radiation-induced degradation products of 2'-deoxyguanosine in oxygen-free aqueous solution have been separated by high performance liquid chromatography and charac terized by various spectroscopic techniques including fast atom bombardment mass spectrometry, ‘H NM R and circular dichroism. The two main decom position products result from the opening of the imidazole ring and f...
Abstract—The transverse electric (TE) field patterns and characteristics are considered for a cylinder with N infinite axial slots of arbitrary opening size and position. The cylinder is a thin circular conductor and covered by an eccentric material. Radiations are determined by applying the boundary conditions to the cylindrical wave functions of the fields. The addition theorem of Bessel func...
A method has been developed in which cineradiography is used for the assessment of the opening angle of implanted Bjork-Shiley prosthetic valves. The method is based on the fact that the ring and the disc, which are known to be circular, appear to be elliptical on x-ray films. The spatial position of the valve can be retrieved from the characteristics of these ellipses when vectoranalysis is ap...
We demonstrate the emergence of classical features in electronic quantum transport for scanning gate microscopy response a cavity defined by point contact and micron-sized circular reflector. The branches flow characteristic opening on two-dimensional electron gas with weak disorder are folded reflector, yielding complex spatial pattern. Considering deflection trajectories tip allows to establi...
Global transcriptome investigations often result in the detection of an enormous number of transcripts composed of non-co-linear sequence fragments. Such 'aberrant' transcript products may arise from post-transcriptional events or genetic rearrangements, or may otherwise be false positives (sequencing/alignment errors or in vitro artifacts). Moreover, post-transcriptionally non-co-linear ('PtNc...
A number of subjective and objective methods have been proposed, and are in use, to determine the roundness of sedimentary rock particles. Roundness, which is one of three properties describing the shape of a particle, is a measure of the extent to which the corners and edges of a particle have been worn away. The objective roundness measures are mainly based on the Fourier transform. In this p...
The flow patterns of an exterior circular hood subject to the influence of various uniform cross drafts were experimentally studied in an apparatus consisting of hood-model/wind-tunnel assembly. A two-component laser Doppler anemometer was employed to measure the velocity field on the symmetry plane. The streamline patterns were obtained from the measured velocity data. The cross draft caused a...
BACKGROUND Capsular contraction syndrome (CCS) has been reported as an uncommon complication after an cataract extraction surgery with intact anterior capsulorhexis. This report is written to present a case of complete occlusion of the anterior capsulorhexis opening after an uneventful cataract surgery, which was treated with non-invasive treatment. CASE PRESENTATION A 69-year-old woman compl...
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