To determine the effect of development and environment on fin growth, we measured fin lengths of juvenile Atlantic salmon (Salmo salar) from two hatcheries (August, October and April–May), stream-reared fish (July and October) stocked as fry into two tributaries, and smolts from the main stem of the Connecticut River (May). For stream-reared parr, there was a linear relationship between the dor...

Three-way junctions of membrane tubules are stabilized by particles generating curvature opposite to the that induce tubules.

introduction: the purpose of this in vitro study was to compare the accuracy of working length determination using the apex locator versus conventional radiography in c-shaped canals. methods and materials: after confirming the actual c-shaped anatomy using cone-beam computed tomography (cbct), 22 extracted c-shaped mandibular second molars were selected and decoronated at the cemento-enamel ju...

INTRODUCTION Compliant gripping mechanisms are particularly suited for precision manipulation of microand nanoscale objects by virtue of having zero backlash, no parasitic columbic friction effects, and often only requiring one actuator to close two gripping faces symmetrically about a centerline of action. Many previous compliant gripping mechanisms use a parallelogram structure (Fig. 1a) to c...

The present paper reports the laminar fluid flow and heat transfer of a heated array of circular-perforated and solid fins mounted over a flat surface using the finite-volume method. One to four circular cross-sectional perforations are made along the length of the fins. The SIMPLE algorithm is used for pressure-velocity coupling and the second order upwind technique is employed to discreti...

The study?s main objective is to assess a channel heat exchanger?s thermal and hydraulic characteristics in the presence of turbulent air-flow at fixed Reynolds number. Using two distinct versions obstacles terms their shape, fix?ation, arrangement, baffles fins are implanted inside channel. To convert conventional flow path into wave-shaped one, first model contains rectangular alternately dis...

Adipose fins are found on approximately 20% of ray-finned fish species. The apparently rudimentary anatomy of adipose fins inspired a longstanding hypothesis that these fins are vestigial and lack function. However, adipose fins have evolved repeatedly within Teleostei, suggesting adaptive function. Recently, adipose fins were proposed to function as mechanosensors, detecting fluid flow anterio...