Using synchrotron X-ray scattering analyses and Fourier transform infrared spectroscopy, this work provides insights into the solvent effects of water : [C2mim][OAc] solutions on the disorganization of a starch semi-crystalline structure. When a certain ratio (10.2 : 1 mol/mol) of water : [C2mim][OAc] solution is used, the preferential hydrogen bonding between starch hydroxyls and [OAc](-) anio...

Foam behaves as a yield-stress fluid it flows in porous medium. Quasi-static analysis suggests that the yield stress arises from non-smooth motion of foam films, denoted lamellae, pores. In order to study effect trapped lamellae on moving lamella and consequently foam, we conduct numerical simulations quasi-static limit. We propose new method utilizing surface energy minimization algorithm, whi...

An anomaly was recorded in the pecten shape of scorpion species Mesobuthus turcicus Kova?ík et al., 2022 that recently described from Turkey. In this case, it is observed marginal and median lamellae fulcrae are fused right pecten. For reason, bent counter clockwise. Different other pectinal anomalies, size teeth developed normally but number fewer. This teratological on illustrated. first repo...

2014 Under heating, a hydrated egg lecithin multilamellar sample in a planar geometry (lamellae normal to the plates) shows a periodic striation instability, followed at higher heating by the socalled « ear-like » domains. We first demonstrate that a normal lamellae contraction under heating can result into a lamellar undulation instability in a planar sample, as well as in a homeotropic geomet...

Formation of the nuclear pore is an intricate process involving membrane fusion and the ordered assembly of up to 1,000 pore proteins. As such, the study of pore assembly is not a simple one. Interestingly, annulate lamellae, a cytoplasmic organelle consisting of stacks of flattened membrane cisternae perforated by numerous pore complexes, have been found to form spontaneously in a reconstituti...

Most computations of arterial mechanics treat the wall as a mechanically homogeneous body, but there are no data to support or refute this. To evaluate this assumption, experiments were performed that measured the deformation of 4 elastic lamellae located at 4 equidistant points across the thickness of the media. Data were obtained at 25-mm Hg pressure steps between 0 and 200 mm Hg. To satisfy ...

Polybutene-1 (PB-1), a typical semicrystalline polymer, in its stable form I shows a peculiar temperature dependent strain-whitening behavior when being stretched at temperatures in between room temperature and melting temperature of the crystallites where the extent of strain-whitening weakens with the increasing of stretching temperature reaching a minima value followed by an increase at high...

Whole pituitary of Wistar albino rats were either (a) immediately fixed in an aldehyde fixative (Karnovsky), or incubated prior to the fixation in (b) unaltered medium 199, (c) medium 199 supplemented with 1.65 M sucrose, or (d) medium 199 diluted with distilled water (1:2). Incubation time was for 0.5 h, at a temperature of 4 degrees or 37 degrees C. All specimens were routinely processed for ...