Ventricular filling occurs along the end-diastolic pressure-volume relationship (EDPVR), or passive filling curve for the ventricle. The slope of the EDPVR is the reciprocal of ventricular compliance. Therefore, changes in ventricular compliance alter the slope of the passive filling curve. For exa...
A PRESSURE‐VOLUME RELATIONSHIP DEMONSTRATIONNo abstract is available for this article.doi:10.1111/j.1949-8594.1948.tb06639.xL. A. KIRSTJohn Wiley & Sons, LtdSchool Science & Mathematics
The pressure-volume-temperature(P-V-T) relationship of MgO has been calculated for conditions of high pressure(0～100 GPa) and high temperature(300～2000 K) using molecular dynamics simulations with the very similar potential models of Stoneham-Sangster and Lewis-Catlow.The results obtained have ...
For instance, the relationship between the lung pressure–volume curves (p–v) is nonlinear, such that the ascending part of this curve (inspiration) does not correspond to the descending part of the curve (expiration) (Yuan et al., 2000). Additionally, the lung volume at the end of the...
Passive or Diastolic Pressure-Volume Relationship The passive length-tension relationship of isolated cardiac muscle determines the relationship betweenpressure and volume in the intact heart (seeFigure 4-16) during diastole. For example, during diastole in theleft ventricle, the pressure in the left...
This relationship between temperature and pressure is observed for any sample of gas confined to a constant volume. An example of experimental pressure-temperature data is shown for a sample of air under these conditions in Figure 3. We find that temperature and pressure ar...
We present a reduced-order heart model with the aim of introducing a novel point of view in the interpretation of the pressure-volume loops. The novelty of the approach is based on the definition of active contraction as opposed to that of active stress. The consequences of the assumption are...
The linearity and load insensitivity of the end-systolic pressure–volume-relationship (ESPVR), a parameter that describes the ventricular contractile state, are controversial. We hypothesize that linearity is influenced by a variable overlay of the intrinsic mechanism of autoregulation to afterload (short...
whereuis the zonal wind speed (+ eastward),vthe meridional wind speed (+ northward),f= 2ω sin ϕ (Coriolis parameter), ω theangular velocityofEarth’srotation, ϕ the latitude, ρ theairdensity(mass per unit volume),pthepressure, andxandythe distances toward the east and north, resp...
This parameter, which has been widely used, allows the engineers to characterize a functional relationship between permeability and pressure without the discrete laboratory core data. Berumen (1995) defined the fracture permeability modulus in a similar fashion to the modulus of the unfractured media ...