Longitudinal structure evaluation

The longitudinal structure evaluates the (chord) lengths of soft and hard domains, only along lines running parallel to the draw direction. Thus a quantitative representation is obtained, describing both the average extensions... 

One way to determine the rehabilitation time is by monitoring the provided level of service related to some surface distresses, mainly transversal/longitudinal evenness and cracking. Another way is by structural evaluation survey of the pavement. 

The experiment is applied for the evaluation of C T, values. T, values are usually used to optimize insensitive C experiments, i.e. to adjust the length of the preparation time in other NMR experiments. To deduce structural information it is usual to interpret the dipolar part of the longitudinal relaxation time (T, ). To separate the dipolar contribution from the contributions of other relaxation mechanisms, it is necessary to perform further experiments (gated decoupling experiments) to evaluate the heteronuclear NOE values. T °° may be exploited in a qualitative way to differentiate between carbon nuclei in less or highly mobile molecular fragments. In a more detailed analysis reliable T, values can be used to describe the overall and internal motions of molecules. 

Cellular and diffusion models are usually used for estimation of longitudinal mixing (turbulence) in reaction zone and consequently for evaluation of deviation degree of fluids hydrodynamic structure from ideal displacement and mixing regimes [3, 7, 19-21]. 

The postcorrosion structural responses of corroded RC beams containing ordinary concrete and HPFRCC materials have also been reported by few researchers. Maalej et al. (2003) evaluated the influence of DFRCC on the structural response of corroded FGC beams. Figure 6.27a shows the load-deflection curves of the corroded and uncorroded ordinary Portland cement (OPC) concrete beams. As the figure shows, the corroded beam (OPCC-2) lost about 13% of its ultimate loadcarrying capacity and 9% of its deflection capacity at failure in comparison with those of the uncorroded one (OPCC-1). In the corroded specimen, after reaching the yield load, a longitudinal crack. 

Q-space diffusion MR was proposed as means to obtain structural information on a micron scale." The effect of diffusion pulse sequence on the signal decay was examined in q-space diffusion MR performed on micron-scale phantoms of different geometries and homogeneities. The effect of the pulse gradient stimulated-echo, the longitudinal eddy current delay (LED) and the bipolar LED (BPLED) pulse sequences was evaluated. 

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