BIOMECHANICS OF LASER SPECKLE FIELDS PRODUCED BY PROBING SCATTERING TISSUES IN VIVO

Maleeva O.V., Institute of Heat and Mass Transfer n.a. A.V. Lykov of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

Fomin N.A., Institute of Heat and Mass Transfer n.a. A.V. Lykov of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

79-84

The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. The examples of use of the laws of the speckle fields dynamics for bio-tissues monitoring in vivo have been given. The strict mathematical description of the bio speckle fields forming and their dynamic statistics under scattering of the laser radiation by moving have been shown. The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. Examples of the use of the laws of the speckle field dynamics, that were applied for physiological monitoring in vivo, have been given. The strict mathematical description of the bio-speckle fields formation and dynamics under scattering of the later radiation on the moving erythrocytes of the biotissue has been adduced. Such description, in a number of cases, requires simple but cumbrous equations. At the same time the knowledge of the analytical dependences of the dynamic speckle fields characteristics for different optic configurations is necessary for the correct processing of specklegrams and building of the blood flow maps of biotissues under study.

speckle-field, dynamics, biological tissue, laser sensing, digital image registration

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IMPLEMENTATION OF IMITATIONAL STANDARDS FOR THE ANALYSES OF DIMENSIONAL METROLOGY GAUGES PROPERTIES

Solomakho D.V., Belarusian National Technical University, Minsk

70-74

A problem of complex surfaces` dimensions measurement often arises during dimensional control of machinery parts. The issue relates to the creation of special geometric parameters` measuring instruments procedures their metrological legalization. The approach of simulative measures application as a method of metrological analyses is proposed in the paper.

linear measurements, metrological characteristics, special measuring instruments

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THE ANALYSIS OF STRESSES, ARISING UNDER THE INFLUENCE OF THE CONCENTRATED LOADING, IN THE FIELD OF CONTACT OF THE PERIODONTIUM TO THE FANG

Bosyakov S.M., Candidate of Physical and Mathematical Sciences, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Yurkevich K.S., Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

75-78

Normal stresses, tangents stresses along forming and directing to a surface of the periodontal shell arising at action on a fang of concentrated force are defined. The geometrical form of a periodontium is described by the equations of elliptic hyperboloids. Calculations and visualisation of fields of stresses are executed for two abundant clinical cases of action of loading on single-fang premolar and a canine.

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FRACTURE OF BURNING SOLID FUEL WITH GEOMETRICAL IMPERFECTIONS OF BOUNDARY

Rustamov B.E., Azerbaijan Technical University, Baku, Azerbaijan

66-69

The plane stationary problem of mechanics of fracture for the solid deformable fuel weakened by any way placed system crack-visible of cavities which surface burns is considered. It is considered, that the boundary of a fuel checker has geometrical imperfections of technological character.

solid fuel, combustion chamber, gas pressure, crack viewing cavity, fuel checker, singular integral equations, fracture of materials, speed of gas flow

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