When soluble earthworm cuticle collagen molecules are subjected to the shearing forces of a flow birefringence instrument, they are broken into particles approximately half the original size. The broken particles resemble vertebrate tropocollagen molecules in their hydrodynamic properties, in levorotatory powers, and in their appearance in the electron microscope. Most significantly, the broken...

Basic equilibrium properties of lattice Boltzmann (LB) fluid mixtures (coexistence curve, surface tension, interfacial profile, correlation length) are calculated to characterize the critical phenomena occurring in these model liquids and to establish a reduced variable description allowing a comparison with real fluid mixtures. We observe mean-field critical exponents and amplitudes so that th...

Removing the green husk and drying walnut are one of the most important steps in post-harvest processing of walnut. Therefore, it is need to precisely identify a walnut’s shell. Physical and mechanical properties of shell in the four Persian walnut cultivars/genotypes were studied. This study investigated the mechanical properties of a walnut’s husk and calculated the required energy in the pro...

ABSTRACT Accurate measurements of the cosmic shear signal require a separation true weak gravitational lensing from intrinsic shape correlations galaxies. These ‘intrinsic alignments’ galaxies originate galaxy formation processes and are expected to be correlated with field through tidal affecting galaxies, such as shearing for elliptical torquing spiral In this study, we use morphologically se...

Abstract The rheological properties of cement pastes prepared using kenaf-plant cellulose microfibers (CMFs), which was incorporated for the purpose internal curing, were investigated. main test variables are length and mass fraction CMFs. CMFs lengths 400 ?m 5 mm included in mixtures at 0.3, 0.6, 1, 2 wt.% cement. Dry CMF particles wetted with water to fiber saturation point vacuum filtration ...

We describe here an approach for the isolation and characterization of substrate attached membranes of cultured cells. The procedure for ventral membrane preparation is based on a short incubation with ZnCl,, followed by shearing with a stream of buffer. By varying the intensity of shearing it was possible to obtain reproducibly either entire ventral membranes or highly enriched focal contacts....

Abderitid marsupials are common in vertebrate-bearing deposits from the middle Miocene of Argentine Patagonia. Recent collections from the inland Pinturas Formation and slightly younger coastal Santa Cruz Formation have dramatically increased the number of abderitid specimens. These new collections permit a re-assessment of abderitid taxonomy as well as an investigation of the dietary habits of...

Measurements of the yield behaviour of a cohesive bulk solid in the Jenike shear tester are normally done in two steps. First, pre-shearing to a steady state yielding, and secondly, shearing under a lower normal stress to establish the shear stress at incipient failure. Due to the limited strain of the sample in this apparatus, the material must be consolidated in an earlier stage. This is done...