Response surface methodology based on a five-level, five-variable central composite rotatable design was used to model the average diameter of electrospun poly methyl methacrylate) nanofibers.
Many studies of forest research have been devoted to model the height-diameter relationship (see, e.g., Jayaraman and Lappi 2001; Eerikäinen 2003; Mehtätalo 2004; Sharma and Parton 2007; Schmidt et al. 2011).
This issue was analyzed by modelling the effect of mean tree diameter and stand basal area on the increment in NPV.
We include in our model the diameter of the carbon nanotube, the temperature and length of the nanotube.
Based on both models, the diameter of MWNTs from 15 to 420 nm can be controlled precisely by using a continuous CVD fabrication method.
The aims of this study were to model the relationship between diameter growth rate and tree size using existing data, and to determine the influences of within-stand competition, local climate and soil parent material on growth rates.
However, we did not model the change in diameter and cannot predict with confidence how it might affect the rate.
Height:diameter ratios can be a rather sensitive measure, because moderate deviations in either the height growth model or the diameter growth model can cause comparatively large discrepancies.
On the other hand, for erosion modeling, the diameters of sand particles used in our hydroabrasion studies have been measured experimentally with a HORIBA particle size analyzer (Retsch Technology, LA950 model).
Computational fluid dynamics (CFD) is used to model the influence of column diameter on the hydrodynamics.
