Scanning electron microscope studies, supported by transmission electron microscope and light microscope observations, have been made of the wing-bud apex in the region of the apical ectodermal ridge (AER) in both normal and talpid mutant embryos. In normal embryos: the ectoderm consists of two layers, the periderm and the basal layer, resting upon a basal lamina. The external surface of the pe...

Abstract One of the classical problems hydrodynamics is problem droplet deformation in state neutral buoyancy under action an external force. It assumed that if size initially equal to or less than capillary diameter, it takes shape a regular sphere, regardless density gradient environment and droplet, degree their mutual solubility, possibility Marangoni convection, time elapsed since creation...

• Spiders of the genus Dysdera have specialized in preying on woodlice (isopods) Many endemic species inhabit Canary Islands. They show different morphological adaptation to prey woodlice. Specialised reduced protein extraction efficiency from non-isopod prey. This may represent a metabolic trade-off isopod specialisation. are peculiar for their terrestrial isopods though preference this type v...

In this paper, the two-dimensional Kelvin–Helmholtz (KH) instability occurring in shear flow of polymer fluids is modeled by dissipative particle dynamics (DPD) method at coarse-grained molecular level. A revised FENE model proposed to properly describe chains. model, elastic repulsion and tension are both considered between adjacent beads, bond length which set as one segment’s equilibrium len...

We developed a simple method to fabricate high aspect ratio 3D microfluidic devices, as geometrically optimized microenvironment for long-term culture of tumor models (i.e., spheroids). The device consists 2 mm-wide central chamber spheroid flanked by two 976 ?m-wide side channels medium and nutrients supply. To cage hydrogel inside the chamber, are isolated using pillar arrays whose geometry h...

Morphological characterization facilitates the seed production agencies to identify varieties on phenotypic basis by their distinguished characters. The presence of sufficient variability for various agro-morphological traits, as well improvement these traithrough selection and introduction new alleles, lines, accessions into breeding activity from both exotic indigenous collections, aids in id...

A polarization independent optical waveguide structure has been developed and optimized towards minimized dependence on deviations in the processing parameters and very low processing complexity. The tolerance analysis was based on typical parameters of the silicon oxynitride technology. The optimized waveguide structure meets the criterion of a channel birefringence within 5x10 taking the proc...