Electron crystallography is used to study membrane proteins in the form of planar, two-dimensional (2D) crystals, or other crystalline arrays such as tubular crystals. This method has been used to determine the atomic resolution structures of bacteriorhodopsin, tubulin, aquaporins, and several other membrane proteins. In addition, a large number of membrane protein structures were studied at a ...

conclusions the current study revealed that a significant percentage of sandwich generation females have chronic diseases. results a statistically significant difference was found between the two groups in terms of the presence of chronic diseases (p = 0.001). there was a significant correlation between chronic diseases and number of children (p = 0.03), person receiving care (p = 0.004), educa...

High levels of stiffness, strength, and lightweight can be achieved through lattice structures. Many different technologies adopted for their construction; among them, additive manufacturing presents high flexibility the capacity to produce complex shape parts. In this paper, a detailed analysis fracture surface was carried out on titanium sandwich panels, having core produced electron beam mel...

The current study deals with free vibration analysis of a sandwich beam in presence different cutouts. PVC foam and glass fiber were used for the core surface layers structures, respectively. First 6 frequencies structures determined cutout shapes to see effect on behavior structures. For this, beams but same area modeled. To cutouts-shape only shape cutouts was changed all other parameters kep...

Additively manufactured polymer parts are often designed like composite sandwich structures. In this work, beam-like specimens with hexagonal, triangular and rectangular infills were different infill densities. An influence of the shape on overall stiffness was observed. The bending hexagonal between 13% 25% lower than that other two cases instead showed similar performances. Numerical simulati...