A novel analytical model development and simulation of melt-electrospinning process is presented. Unconstrained equations motion for the description a discretized melt-electrospun fiber are formulated using Kane's method. The motions spinneret collector plate also incorporated into kinematics formulation to simulate direct writing three-dimensional printing scenarios. Constraints describing vis...

Abstract A new periotic (MuMAB 240508) is described from the Tortonian of Stirone River, Northern Italy. The specimen and compared to all known periotics extant extinct balaenopterid species. shows characters, including triangular anterior process, transverse anteroposterior elongations pars cochlearis, as well in arrangement endocranial foramina periotic. presence a medial promontorial groove,...

The steep thermal gradient and complicated cycle occur in the fabrication of Ti6Al4V alloy during laser solid forming (LSF). That leads to obvious anisotropic mechanical properties requires essential heat treatments improve its performance. In this work, different treatment strategies under vacuum condition were used study evolution microstructures produced by LSF. results show that transformat...

Abstract Multiphase ultra-high strength steels (UHSS) containing retained austenite (RA) appear to be among the most interesting for automotive industry. Developments in last decades have allowed obtaining a very good combination of mechanical and ductility. Quenching partitioning (Q&P) been proposed as third-generation UHSS, reaching ultimate tensile up 1300 MPa along with excellent fractu...

Abstract Various manufacturing techniques are available for polymer stent fabrication. Polymer semi-finished products can be prepared using solvent based methods, e.g. dip coating, as well thermal processes, extrusion. These different methods may lead to an altered crystal structure, resulting in a deformation mechanism during mechanical stress. For the material property characterization needed...

This study shows a thick plate, pointed on both sides, of variable elongation under action subsonic and supersonic air flows. The relevance the work is driven by development new aircraft that change their geometry during flight, in particular, relative flight. aim this to determine aerodynamic fields around taking into account its elongation, effect drag coefficient plate. Numerical simulation ...

Abstract. This presentation shows that superplasticity is achieved in hard-to-deform materials when they are processed by severe plastic deformation (SPD) through high-pressure sliding (HPS). The HPS process similar to the torsion (HPT) as straining made under high pressure highly constrained conditions. It applicable a sheet form of samples while HPT uses disks or rings, and thus it has advant...

Laser cutting is a suitable manufacturing method for generating complex geometries sheet metal components. However, their cyclic load capacity reduced compared to, example, milled This due to the influence of laser-cut edge, whose characteristic features act as crack initiation sites, especially resolidified material in form burr and melt droplets. Since components are often formed into final g...

In this study, we examined the role of recombination at the telomeres of the yeast Kluyveromyces lactis. We demonstrated that an abnormally long and mutationally tagged telomere was subject to high rates of telomere rapid deletion (TRD) that preferentially truncated the telomere to near-wild-type size. Unlike the case in Saccharomyces cerevisiae, however, there was not a great increase in TRD i...