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Since PSK signals are characterized by the phase, cross time-frequency distributions (XTFD) based method is proposed as it is capable of representing the signal phase information [23].
From a phase cross sectional profile, shown in Fig. 5, one can calculate the effective refractive index contrast using simple transformations in the Fourier domain: Fig. 5 Measurement of BSW phase with the aid of MH-SNOM.
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With vapor phase cross-linking for 12 h, porosity of the collagen matrix decreased from 89% to 71%.
Unlike many other cross-linking agents and/or methods (e.g., excessive vapor phase cross-linking) that may pose a risk of toxicity, our study demonstrated that these nanofibrous materials are well tolerated by anterior segment tissues.
Considering that biomaterials cross-linked via film immersion technique may have a more homogeneous cross-linked structure than vapor phase cross-linking, this work aims to investigate the chemical modification of electrospun gelatin nanofibrous membranes by liquid phase carbodiimide in the presence of ethanol/water co-solvents with varying ethanol concentrations ranging from 80 to 99.5 vol%.
Through cross-correlating the sub-signals of the dilute and dense phases, separated from the measured solids holdup data, a Divided Phase Cross-Correlation Method (DPCCM) was proposed and was successfully used to obtain the distributions of particle velocity and solids flux of the dense and dilute phases.
We have contracted the zeros away from the unit circle in this example, because the phase response really does switch discontinuously by radians when the frequency passes through a point where the phase crosses zero along the unit circle (see Fig.7.3(b)).
For those variable costs in the establishment phase, cross-correlations between operations in successive years are supplied in the example data.
b1 Zero-frequency phase crossing (phase-resonance).
one phase cross-sectional survey carried out in Sao Paulo and Rio de Janeiro, Brazil.
The main objective of the first phase (cross-over study) is to determine the prevalence of PAD in the general population, in both its silent and symptomatic forms.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com