We study the steady translational fall of a homogeneous body of revolution around an axis s, with foreand-aft symmetry, in a second-order liquid at nonzero Reynolds (i‚ ) and Weissenberg (G‚ ) numbers. We show that, at first order in these parameters, only two orientations are allowed, namely, those with s either parallel or perpendicular to the direction of the gravity /. In both cases the tra...

In a series of experiments we compared orientation discrimination performance for Gabor stimuli in which the stimulus profile was either matched to the receptive field profile of single V1 simple cells ('simple'), or in which the carrier and envelope orientations were different ('tigertails'). In the first Experiment, using small, high spatial frequency, peripheral stimuli to minimise the numbe...

extending the export of high technology-based products is one of the most important goals of long term strategy of the country’s export development. in the present study, the main structures influencing the success of exportation through intangible resources (market orientation and entrepreneurial orientation) and the role of dynamism of export target market are investigated by considering the ...

the aim of this study was to investigate the relationship between sport orientation and competitive anxiety in male and female athletes of team and individual sports who participated in 10th student sport olympiad (1389). the present study was descriptive and correlation method was used. for this purpose, 688 subjects (337 females and 351 males) were selected as the sample by simple random samp...

introduction: endothelial cells are subjected to mechanical forces caused by pulsatile flow and pressure leading to hemodynamic shear stress and circumferential stress on endothelial layer. the study aimed at a quantitative evaluation of endothelial cell morphology by application of cyclic loading. endothelial cells respond to applied loads with adaptation and remodeling. such mechanisms are ma...

We describe a mutant of Chlamydomonas reinhardtii in which basal body associated striated fibers are absent or incomplete. Basal body spacing, angle, and relative rotational orientation are abnormal and extremely variable. Abnormal partitioning of cellular contents at cytokinesis is also evident. Mating, maintenance of flagellar length equality, and backward swimming response are normal. Geneti...

In this study, effects of porosity and fiber orientation on the viscous permeability and Forchheimer coefficient of mono-dispersed fibers are investigated. The porous material is represented by a unit cell which is assumed to be repeated throughout the medium. Based on the orientation of the fibers in the space, fibrous media are divided into three categories: 1D, 2D, and 3D structures. Paralle...