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تعداد نتایج: 803319 فیلتر نتایج به سال:
Thrombus formation on collagen fibrils was quantified at venous (100/s) and arterial (650/s and 2,600/s) wall shear rates in blood from patients with various subtypes of von Willebrand disease (vWD) and with hemophilia A (HA). Nonanticoagulated blood was drawn directly from an antecubital vein over purified type III collagen fibrils exposed in parallel-plate perfusion chambers. Blood-collagen i...
Vertebral deformities are prevalent in chronic obstructive pulmonary disease (COPD) patients and may cause excessive loss of height. As height is used for calculating reference values for pulmonary function tests, larger than normal height reduction could cause overestimation of lung function. In this cross-sectional study of 465 COPD patients and 462 controls, we explored how often lung functi...
A DNS parametric study of streamwise?aligned rectangular ridges is carried out in a fully developed turbulent channel flow with constant rate at $Reb = 18000$. The simulations were systematically varying the ridge height h, width w and structural wavelength $S$. generate strong large?scale secondary motion, which measured terms integral swirl strength. Of presented cases, configuration height$ ...
A survey with a sample of 460 was carried out to determine the weight and height of infants in Hamadan city , Iran. The results show that the prevalence of the low-birth-weight in 10%. The results indicate that the mean and median of the infant’s weight are 3117 and 3200 gr., respectively . The mean and median of their height are 48.03 and 48 cm, respectively. Statistical tests co...
BACKGROUND AND PURPOSE Our goal was to characterize the geometry of simple-lobed cerebral aneurysms and to find the absolute size of these lesions from angiographic tracings. METHODS Measurements of angiographic neck width (N), dome height (H), dome diameter (D), and semi-axis height (S) were obtained from tracings of 87 simple-lobed lesions located at the basilar bifurcation (BB), middle cer...
BACKGROUND The need for reoperation or wound infection treatments between pulsatile and gravity irrigation are statistically equivalent, however, it is unclear which method maximizes operative efficiency and expeditious irrigation. In this study we set out to determine the differences in irrigation rate between these various treatment methods. METHODS This was an ex-vivo experimental laborato...
background: exact determination between children's sleep habits and their growth could help us to prevent this risk factor of children's growth disorders. thus this research was performed to investigate the correlation between sleep habits and growth of preschool children in ahvaz- iran. materials and methods: in this cross-sectional study, the data was obtained by using available sam...
Measurement of interrupter airway resistance (Rint) is a convenient alternative to standard spirometry for assessing respiratory function in uncooperative young children. The aim of the present prospective study was to establish the normative data and predictive equation of Rint in Japanese preschool children. A total of 214 children were enrolled from a single kindergarten; however, 129 were e...
materials and methods: one hundred and thirty five mesial root canals of mandibular first and second molar teeth were selected. access cavities were prepared. after inserting a k-file size #10 into each canal, radiographs were taken. canal curvature was determined by measuring the schneider angle, canal access angle, as well as the canal radius, length, height and curvature starting distance on...
The onset characteristics of pancuronium, tubocurarine and a mixture of these two neuromuscular blocking drugs were studied during the induction of neuromuscular blockade, using a train-of-four pattern of stimulation. Four characteristics of onset were defined: train-of-four fade = a reduction in the height of the fourth twitch greater than a reduction in the height of the first twitch; latent ...
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