Fluid dynamics models for laser material processing with metal fusion in conduction mode generally assume a constant absorptivity. This parameter is known to govern the process. However, it used be pre-set by extrapolating absorptance measurements made at different conditions or adjusted reproduce experimental bead shapes. In this study new approach developed. It consists predicting as function...

Analytical cytometry has significant potential beyond cellular analysis. The inherent capability of flow cytometers to efficiently discriminate between uniformly sized particles based on their intrinsic properties provides the foundation for multiplex bead assays. The technology can be exploited in designing immunoassays, Western blot-like antibody assays, and nucleic acid hybridization assays....

background: the aim of this study was to investigate vertebral geometry changes and determine cutoff value of vertebral height to predict fractures. methods: in a cross-sectional study, 280 postmenopausal women recruited .in all subjects bone mineral density and radiog raphy of the lumbar spine performed. lateral radiographs were evaluated for identification of vertebral fractures, using a vali...

The one-trial passive avoidance learning task is commonly used in avian research to explore anatomical, cellular and molecular parameters of learning and memory. Many factors are known to influence the effectiveness and/or duration of such learning events. Combinations of novel odours, such as pyrazine, and aposematic colours, such as brig ht yellow or red, have been shown to induce a long-last...

A 325 MHz aluminum prototype of a spatially periodic RF quadrupole focusing linac was developed at the Institute Modern Physics, Chinese Academy Sciences, as promising candidate for front end high-current linac. It consists an alternating series crossbar H-type drift tubes and sections. Owing to its special geometry, cavity fabrication is major hurdle engineering development application. In thi...

Herein, we investigated the wetting behavior of hexagonally close-packed polystyrene bead arrays with different bead diameters and surface flatness. The contact angle was found to be influenced by the surface roughness as well as the contact area of the polystyrene bead array with a water droplet.

The reconstruction of the geometry weld-deposited materials plays an important role in control torch path GMAW. This technique, which is classified as a direct energy deposition technology, experiencing new emergence due to its use welding and additive manufacturing. Usually, determined by computerised fabrication tools, but these software tools do not consider geometrical changes along case du...

In sheet metal forming, free deformation of the takes place frequently without contact with forming tools. The pre-straining resulting from leads to a surface roughening metal. It is assumed that has an influence on friction and wear behavior following process as well painting quality after manufacturing. this paper, numerical prediction based polycrystalline model first proposed predict effect...

the subject of geometry and proportions has been regarded as an issue which has a close relationship with architecture. since the entire universe, living beings and the human geometry can be seen clearly, that’s why our unconscious essence has accustomed to these proportions whereby reflection of this mentality can be seen in the architect’s hands and thought in the architecture. it can witness...

We show how the trapping position of an optically trapped 1-µm polystyrene bead is measured, and that it can be shifted by changing the relative radiation pressure exerted on the bead. The trapping position of the bead relative to the focus is measured using defocusing microscopy and 2-photon microscopy. Our observations are explained by the two component approach for optical forces.