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Biomedical subjects

B Z Gevorkian

Publications and source records attributed to B Z Gevorkian.

2 recordsLinked to original sources

[Study of bone tissue structure using polarized Raman spectra].

Polarized Raman spectra of bone tissue were obtained as well as of collagen fibres of the mouse tail tendon and oxyapatite crystals. It is shown that polarized Raman spectra permit to obtain information on spatial orientation of collagen fibres and oxyapatite microcrystals in various parts of the bone tissue. A laser Raman microprobe "Mole" was used to take Raman spectra measurements from the area of several square micrones. It is shown that in the diaphis osteon of human femur the collagen fibres and crystallographic axis C of oxyapatite crystals are directed along the long axis of the bone in the direction of the main mechanical loads on it.

Animals↗

[Determination of the carotenoid content of human blood plasma by light scattering].

Resonance combinational dispersion (RCD) of light was used for direct estimation of carotin in blood plasma without a previous extraction step. Intensity of RCD carotin lines in blood plasma correlated with that of standard beta-carotin solution in CCl4. Estimation of carotin concentration by means of RCD was compared with extraction-photometric procedure. The most suitable concentrations were 1.10(-5) = 1.10(-7) g/ml; 10 ml of blood plasma was sufficient for accurate measurements.

Carotenoids↗