نتایج جستجو برای: diameter measurement
تعداد نتایج: 544247 فیلتر نتایج به سال:
OBJECTIVES To evaluate the interobserver reliability of echocardiographic findings of right ventricle (RV) dysfunction for prognosticating normotensive patients with pulmonary embolism (PE). METHODS A central panel of cardiologists evaluated echocardiographic studies of 75 patients included in the PROTECT study for the following signs: RV diameter, RV/left ventricular (LV) diameter ratio, hyp...
specific structure of ewe's cervix is one of artificial insemination limitation in sheep. successful insemination in ewes has a close relation with morphology of their cervix. the objective of this experiment was to compare anatomical structure of cervix in makui, kurdish and afshari ewes. in this study, reproductive tract of 300 ewes of aforesaid sheep (100 ewes of each strain) were colle...
The 7-hole probe measurement system is mainly used to measure three-dimensional flow fields. During the measurement, head was in direct contact with measured object, and structure had a significant influence on accuracy of field measurement. main influencing factors were hole opening mode, position, diameter. For hemispherical perpendicular forward-facing holes, orthogonal experiments three lev...
Evaluation of elastic properties of major arteries is subject of great interest with respect to the development of vascular diseases. In this study changes in diameter and cross-sectional area, stress-strain elastic modulus and stiffness of the common carotid arteries in healthy and atherosclerotic women and men were evaluated by using indirect end pressure changes. Variations in diameter and c...
A novel measurement prototype based on a mobile vehicle that carries a laser scanning sensor is proposed. The prototype is intended for the automated measurement of the interior 3D geometry of large-diameter long-stepped pipes. The laser displacement sensor, which has a small measurement range, is mounted on an extended arm of known length. It is scanned to improve the measurement accuracy for ...
A focused laser beam is used to heat individual single-walled carbon nanotube bundles bridging two suspended microthermometers. By measurement of the temperature rise of the two thermometers, the optical absorption of 7.4-10.3 nm diameter bundles is found to be between 0.03 and 0.44% of the incident photons in the 0.4 microm diameter laser spot. The thermal conductance of the bundle is obtained...
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