Biomedical subjects

L I Shifrin

Publications and source records attributed to L I Shifrin.

3 recordsLinked to original sources

PubMed1990

[Evaluation of thrombocyte retractile activity using a retractograph].

Direct measurement of the force of clot contraction from the plasma in normal subjects and standardization of plasma platelet count, carried out with a retractograph, a newly designed apparatus, have helped assess the platelet retractile activity. Linear relationship between platelet count in the clot from the plasma and the force of the clot contraction, detected in normal subjects, allows one to do without standardization of the platelet count to a preset level when measuring the blood platelet retractile activity in patients.

Blood Platelets↗

PubMedDate not supplied

[A universal measuring rectifier for a multifunctional hemocoagulation analyzer].

For complex investigation of coagulation blood system the universal rectifier should rectify homogeneous physical values in the direct and reverse rectifying modes. High operational and metrological parameters of the rectifier are gained due to the cylinder differential electromagnetic system, which has distributed magnetic and concentrated electrical parameters. Electromagnetic excitation system allows one to correct calculation errors by the method of changing current in the excitation coil, which simplifies the system's calculations.

Blood Coagulation Tests↗

PubMedDate not supplied

[Measuring converter for elastometric medical instruments].

According to thorough consideration of converting characteristics of elastometric instruments, the measurement error can be diminished by introducing in the measuring converter some regulation means for the angle of the moment of counteracting springs and an assembly to limit the radial shift of the converter moving part. Such a modification provides high operational and metrologic characteristics for elastometric medical instruments.

Blood Coagulation Tests↗