Effect of Low-Level Laser Irradiation on Proliferative Activity of Wharton's Jelly Mesenchymal Stromal Cells.

We studied the effect of low-level laser irradiation on proliferative activity of cultured human Wharton's jelly mesenchymal stromal sells. Cells were irradiated with a solid-state laser emitting at 650 nm; irradiation doses were 0.04, 0.

Laser MICROSAMPLING of soil microbial community.

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Photoluminescence of Drying Droplets with Silicon Nanoparticles.

This study is dedicated to the formation of structures during drying of droplets of sols of silicon nanoparticles (SiNPs) in dimethylsulfoxide (DMSO) with a diameter of 1-5 mm on the horizontal glass and mica surfaces. Drying of such droplets with pinning (sticking) of the droplet contact line causes gradual gathering of the SiNPs on its edge with the formation of a thin ring. It has been found that the integral photoluminescence intensity I greatly varies during the drying process.

Laser printing of microbial systems: effect of absorbing metal film.

Recently, it was shown that laser-induced forward transfer (LIFT) technology and the laser engineering of microbial systems (LEMS) technique (based on LIFT method) are effective for isolation of micro-organisms from different complex substrates. These techniques frequently utilize Au as an absorbing layer material. The purpose of this study was to investigate the influence of absorbing film materials (Au, Ti and Cr) on the effectiveness of laser printing of micro-organisms to improve LEMS and LIFT techniques.

Anomalous behavior of nonlinear refractive indexes of CO and Xe in supercritical states.

Direct measurement of pressure dependent nonlinear refractive index of CO and Xe in subcritical and supercritical states are reported. In the vicinity of the ridge (or the Widom line), corresponding to the maximum density fluctuations, the nonlinear refractive index reaches a maximum value (up to 4.8*10m/W in CO and 3.