AIM To study the optical properties of human normal small intestine tissue at 476.5 nm, 488 nm, 496.5 nm, 514.5 nm, 532 nm, 808 nm wavelengths of laser irradiation. METHODS A double-integrating-sphere system, the basic principle of measuring technology of light radiation, and an optical model of biological tissues were used in the study. RESULTS The results of measurement showed that there ...

Thc bulk dcposi tional 0 uxcs of 2l QPb rrd 7Bc werc mcasured at a co6 tal (Galvcston) and qn i nlad (Col legc Station)st*ion'forabout 3 ycars, bctwccn 1989 and l99t Thc annuat d?osiiional fluxe of ?Bc and zlQU-"t Station is of contincntal origin. 6ur'dea thcrsforc suggcst that 78" "ia 2lQP6 cannot bc uscd as indcFndc-nt atrnospheric traccn in ourcoctal station. This obscrvation is consistcnt w...

We study vacuum particle antiparticle pair production under action of a strong time dependent space homogeneous electric field at the presence of a constant magnetic field. The kinetic equation for fermions and bosons was derived in the framework of the Schwinger mechanism of vacuum tunnelling. We show the enhancement of pair production for fermions (suppression for bosons) with the increasing ...

[1] The heat and mass balance of the Arctic Ocean is very sensitive to the growth and decay of sea ice and the interaction between the heat and salt fields in the oceanic boundary layer. The hydraulic roughne ss of sea ice controls the detailed natur e of turbulent fluxe s in the boundar y layer and hence is an important ingredient in model parameterizations. We describe a novel mechanism for t...