Fluid slip has been observed experimentally in microand nanoscale flow devices by several investigators @e.g., Tretheway and Meinhart, Phys. Fluids 14, L9 ~2002!; Zhu and Granik, Phys. Rev. Lett. 87, 096105 ~2001!; Pit et al., Phys. Rev. Lett. 85, 980 ~2000!; and Choi et al., Phys. Fluids 15, 2897 ~2003!#. This paper examines a possible mechanism for the measured fluid slip, for water flowing o...

Polyvinylidene fluoride/polyvinylpyrrolidone (PVDF/PVP) hollow fiber membranes were fabricated by dry-jet wet-spinning process. The correlated effects of the air gap length and PVP concentration ((1) the air gap length effect at the low and high PVP concentration in the dope solutions, as well as (2) the effect of the PVP concentration at the same air gap length) on the cross-section structure ...

Parent Rufus Bush Chats Cercotrichas galactotes perform of distraction display, approaching and flying away from potential predators near their nests while vocalizing and displaying their conspicuously coloured tail. The response of breeding pairs attending their first brood during the mid and final nestling stages was registered to stimuli of danger near their nests over two seasons. The first...

Length of paired clavicles of northwest Indians of Chandigarh zone was measured in 748 male and 252 female adults (18 to 90 years), 45 male and 30 female children and adolescents (11⁄2 to 17 years), 13 male and 12 female newborns (> 300 mm CR length) and 28 male and 24 female fetuses (32 to 299 mm CR length). In children and adults, the left bone was longer than the right. In fetuses and newbor...

in this research,  300  pairs of lymph nodes; prescapular, prefemoral and popliteal were collected from lori – bakhtiari sheep in shahrekord abattoir. the specimens divided in two age groups (6 -12 month and 13 – 18 months) and then length, width and thickness of them were recorded using by caliper. for histological studies, lymph nodes were processed through routine tissue preparation techniqu...

The authors designed a study to test the hypothesis that the length of the ulna might affect the shape of the lunate bone because of long-term molding during life. This might then be useful to predict the presence or absence of a dynamic or static ulna plus by the shape of the lunate bone. In a prospective study, posterior-anterior wrist x-rays were taken in a standard fashion in 68 patients wi...

in this research, morphology and histology of the left and right lacrimal glands of ten adult ostrich were carefully studied. after the topographical study of the glands and measuring the dimension of them, tissue sections were prepared and stained by current histology. results revealed that in ostrich, lacrimal gland was dark brown to black color and was located obliquely in dorsolateral part ...

Trains with different numbers of cars running in the open air were simulated using the delayed detached-eddy simulation (DDES). The numbers of cars included in the simulation are 3, 4, 5 and 8. The aim of this study was to investigate how train length influences the boundary layer, the wake flow, the surface pressure, the aerodynamic drag and the friction drag. To certify the accuracy of the me...