Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Andrey A. Grinevich"'
Publikováno v:
Biophysics. 66:209-217
In this study we used the kink solutions of the nonlinear sine-Gordon equation to apply methods of mathematical modeling to investigate the dynamics of the transcription bubble in the pPF1 plasmid. Based on the calculated energy profile for the pPF1
Publikováno v:
Biophysics. 65:159-164
—The phase relationships between heart rate variability, respiration, forearm skin blood flow oscillations (according to laser Doppler flowmetry), and finger-pad tissue blood volume oscillations (according to photoplethysmography) were analyzed in
Publikováno v:
Biomedical Signal Processing and Control. 79:104222
Publikováno v:
Biophysics. 64:117-128
—The experimentally revealed high phase coherence between low-frequency oscillations in the cutaneous blood perfusion signal at the contralateral skin sites indicates the existence of a central mechanism of its regulation. The vascular bed can be s
Publikováno v:
Microcirculation. 28
OBJECTIVE The research is aimed to investigate interactions between cardiovascular signals and to assess contributions of central and local mechanisms to skin blood flow regulation in upper and lower extremities at rest and under orthostasis. METHODS
Publikováno v:
2020 11th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO).
Wavelet phase coherence between respiration rate, heart rate variability (HRV), skin blood flow and tissue blood volume oscillations were studied in healthy volunteers at rest. High phase coherence between respiration rate and tissue blood volume osc
Publikováno v:
Saratov Fall Meeting 2019: Computations and Data Analysis: from Nanoscale Tools to Brain Functions.
Phase interactions between cardiovascular and respiratory systems were analyzed at rest in volunteers. 22 healthy normotensive non-smoking subjects aged from 21 to 45 years participated in the study. The following physiological signals were recorded
Publikováno v:
Saratov Fall Meeting 2019: Computations and Data Analysis: from Nanoscale Tools to Brain Functions.
A mathematical hydrodynamic model of human cardiovascular bed has been developed. The model includes a 4- chamber heart, two circles of blood circulation and a multilevel microvasculature. Using model developed we studied the influence of low-intensi
Autor:
Andrey A. Grinevich, L. V. Yakushevich
Publikováno v:
Journal of Theoretical Biology. 453:68-77
In this work, we study numerically the influence of the DNA torque on the movement of transcription bubbles in the potential field formed by the sequence of plasmid PTTQ18. To imitate the movement, we apply a modified sine-Gordon equation with the tw
Autor:
Andrey A. Grinevich, Alexander D. Nadeev, Ninel I. Kosyakova, N. K. Chemeris, V. G. Safronova, I. V. Tikhonova
Publikováno v:
Immunobiology. 223:8-17
Reactive oxygen species (ROS) are important in bronchial asthma (BA) pathogenesis owing to accumulation of activated granulocytes in the lungs. But the ROS-producing activity of the cells is insufficiently understood in the blood of BA patients. This