Search results
Results From The WOW.Com Content Network
In ecology, pressure-volume curves describe the relationship between total water potential (Ψt) and relative water content (R) of living organisms.These values are widely used in research on plant-water relations and provide valuable information on the turgor, osmotic and elastic properties of plant tissues.
Graph of Boyle's original data [4] showing the hyperbolic curve of the relationship between pressure (P) and volume (V) of the form P = k/V. The relationship between pressure and volume was first noted by Richard Towneley and Henry Power in the 17th century. [5] [6] Robert Boyle confirmed their discovery through experiments and published the ...
A pressure–volume diagram (or PV diagram, ... in which case the area under the curve represents work per unit mass of the working fluid (i.e. J/kg). ...
End-diastolic pressure volume relationship (EDPVR) describes the passive filling curve for the ventricle and thus the passive properties of the myocardium. The slope of the EDPVR at any point along this curve is the reciprocal of ventricular compliance (or ventricular stiffness).
Simplified Pressure-Volume Curve. A more advance method that uses the pressure bomb in plant physiology is pressure-volume curves analysis or p-v curve. Through this method one measures the changes in leaf or stem water potential and relative water content to isolate the underlying components of total leaf or stem water potential. [7]
The graph on the right plots the intersection of the surface shown in Figures A and C and four planes of constant pressure. Each intersection produces a curve in the , plane corresponding to the value of the pressure chosen. These curves are isobars, since they represent all the points with the same pressure.
The transpulmonary pressure vs volume curve of inhalation (usually plotted as volume as a function of pressure) is different from that of exhalation, the difference being described as hysteresis. Lung volume at any given pressure during inhalation is less than the lung volume at any given pressure during exhalation. [1]
The Birch–Murnaghan isothermal equation of state, published in 1947 by Albert Francis Birch of Harvard, [1] is a relationship between the volume of a body and the pressure to which it is subjected. Birch proposed this equation based on the work of Francis Dominic Murnaghan of Johns Hopkins University published in 1944, [ 2 ] so that the ...