Zobrazeno 1 - 10
of 12
pro vyhledávání: '"M. A. F. Epstein"'
Publikováno v:
Journal of Critical Care. 7:9-13
Most analyses of pressure-limited, time-cycled ventilation stress the detrimental effects of incomplete exhalation on both minute volume delivered to the lung and on gas exchange. However, because these ventilators set a limit to inspiratory flow, th
Autor:
R. A. Epstein, M. A. F. Epstein
Publikováno v:
Acta Anaesthesiologica Scandinavica. 25:39-45
The thesis that an accelerating flow generator provides more even ventilation than a constant flow generator originated from studies using mechanical lung models. We simulated such studies by use of mathematical models. We found that the conclusions
Publikováno v:
Anesthesiology. 62:60-64
The authors demonstrated that soda lime will adsorb enflurane or isoflurane as a function of the water content of the soda lime. Various volumes of liquid enflurane or isoflurane were placed in an equilibration flask containing fresh (15% water by we
Publikováno v:
British Journal of Anaesthesia. 54:561-565
Using fresh soda-lime (15% water by weight) the soda lime/air partition coefficient of halothane was found to decrease as a function of vapour phase halothane concentration from 2.40 at 0.3% halothane by volume to 1.15 at 2.6%, but adsorption general
Autor:
D. T. Raphael, M. A. F. Epstein
Publikováno v:
Annals of Biomedical Engineering. 17:361-375
The resonance conditions associated with the propagation of a harmonic wave within a rigid, lossless branching structure can be explicitly derived. In this study, exact resonance conditions are derived for multi-order, rigid, asymmetric branching str
Autor:
R. A. Epstein, M. A. F. Epstein
Publikováno v:
Medical & Biological Engineering & Computing. 18:746-748
An electronic circuit is described which automatically rezeroes a physiologic signal whenever it reaches the limit of a display. This modified signal can be used for polygraph monitoring while the raw signal is processed by a wide-range high-resoluti
Autor:
M. A. F. Epstein
Publikováno v:
Respiration physiology. 63(3)
Assessment of the type of flow regime-laminar, transitional or turbulent-present in the central airways during high-frequency ventilation (HFV) can assist in identification of the predominant gas transport mechanisms for a particular species and set
Publikováno v:
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society.
The concept of impedance for biological flows (respiration, circulation, etc.) was originally introduced to relate pressure and flow rate in a lumped-parameter framework. Such an approach enables the pressure to be calculated from the flow rate (or v
Publikováno v:
Respiration physiology. 47(1)
Research in the field of high frequency ventilation (HFV) has been hampered by the difficulty of collecting and analyzing expired gas, uncontaminated by gas of inspiratory composition, at ventilatory frequencies in the relevant range. A new mechanica
Publikováno v:
The American journal of physiology. 248(4 Pt 2)
To model the flow behavior of white and red blood cells at microvascular branch points, the distribution of neutrally buoyant spherical and disk-shaped particles at a symmetric T bifurcation was investigated for low Reynolds number flows (0.01-0.1).