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4 results for “Constant Volume”
Data from: Scaling of leaf area with biomass in trees reconsidered: Constant metabolically active sapwood volume per unit leaf area with height growth
<p>Hypoallometric (slope<1) scaling between metabolic rate and body mass is often regarded as near-universal across organisms. However, there are compelling reasons to question hypoallometric scaling in woody plants, where metabolic rate=leaf area. This leaf area must provide carbon to the metabolically active sapwood volume (VMASW). Within populations of a species, variants in which VMASW increases per unit leaf area with height growth (e.g. ⅔ or ¾ scaling) would have proportionally less carbon for growth and reproduction as they grow taller. Therefore, selection should favor individuals in which, as they grow taller, leaf area scales isometrically with shoot VMASW (slope=1). Using tetrazolium staining, we measured total VMASW and total leaf area (LAtot) across 22 individuals of Ricinus communis and confirmed that leaf area scales isometrically with VMASW, and that VMASW is much smaller than total sapwood volume. With the potential of the LAtot-VMASW relationship to shape factors as diverse as the crown area-stem diameter relationship, conduit diameter scaling, reproductive output, and drought-induced mortality, our work suggests that the notion that sapwood increases per unit leaf area with height growth requires revision.</p>
Cyclic Direct Simple Shear (CDSS) - Sand S30T - Constant Volume condition - Dr 0.85 - 1
<p>Each CDSS test includes a PDF file (containing the grain size distribution) and a text file.</p> <p>The CDSS tests were performed under specified conditions: </p> <p>Normal stress: 100 - 500 kPa</p> <p>Number of cycles: 1000</p> <p>Preparation: Tamping</p> <p>Sample dimensions: h=20 mm, d=71,4mm</p> <p>Relative density: 0.85</p> <p>Test conditions: constant volume</p> <p>CSR/MSR: different</p>
Data from: Scaling of leaf area with biomass in trees reconsidered: Constant metabolically active sapwood volume per unit leaf area with height growth
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The Use of Constant-flow Technique for Determining the Lower Inflexion Point of Pressure-volume Curve and Intrinsic PEEP During One-lung Ventilation
ClinicalTrials.gov study NCT01532245. IPD Sharing: Not stated. Countries: 0. Publications: 0.
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OpenNeuro
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