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Largely, correlations are utilized to reduce the number of input data.
T.: "Formation Grain Size Prediction Whilst Drilling: A Key Factor in Intelligent Sand Control Completions," SPE 56626, (1999) [6].

In both flight experiments the first development of morphological instabilities was observed at grain boundaries also existing during planar growth.
In this case a specific number of cells was overgrown and degenerated so that the distance between the remaining cells increased.

Single crystals of Ni3Nb and Ni3Ti and crystals with directionally oriented large grains of Ni3Sn were grown by the floating zone method under a high-purity Ar gas flow.
Since there is a large number of hcp based GCP type compounds with c/a>1.60, new compounds showing anomalous strengthening behavior are expected to be developed.

For refractories that comprise a variety of particles, the size of selected representative volume unit should not be less than the maximum grain.
Where N is inclusions numbers of composites; c0 is volumetric fraction of matrix; cr is volumetric fraction of inclusion; Keff is the effective volumetric modulus of composites; K0 is volumetric modulus of matrix; Kr is volumetric modulus of inclusion; Geff is the effective shear modulus of composites; G0 is shear modulus of matrix; Gr is shear modulus of inclusion; Kp and Gp are computed by Eq. 3 and Eq. 4.

Powders surfaces and densities allow to calculate an average grain size of approximatively 60 nm.
The band at 1384 cm-1 corresponds to the nitrate vibration (residue of synthesis process). 28 29 30 31 32 33 34 2 théta scale HAP C/P=1/8 C/P=1/4 C/P=1/2 C/P=1 C/P=2 -2 0 2 4 6 8 0 0,5 1 1,5 2 2,5 400°C 600°C 800°C 1000°C Wt%CO3 C/P molar ratio of initial reagents 1300 1400 1500 1600 1700 200°C air f or 8h 950°C CO2 for 2h 1000°C CO2 f or 2h wawve number (cm-1) Figure 1 Figure 2 Figure 3 Sintering The heat-treatment of carbonated apatites in air (or inert gas) above 600°C leads to the departure of carbonate species as it is shown on figure 3.

At 1600 ºC, the areas with a high titanium contents (Ti particles accumulation) results in a residual presence of α precipitates mainly in the β grain boundaries.
Froes: The AMPTIAC Quarterly V6, number 2

Dissimilar welding often leads to low mechanical properties owing to the metallurgical changes such as micro-segregation, precipitation of secondary phases, presence of porosities, solidification cracking, grain growth in the heat affected zone (HAZ) and loss of materials by vaporization.
With further increase in number of cycles, the scale becomes darker.

Under normal circumstances,a large number of waste drilling mud will be left at the drilling site, and then leached into the ground by rain after long-term accumulation.
Finally they had preliminary proved that the waste drilling mud can be used as compound fertilizer according to examine the indicators, such as compressive strength, moisture content, available nutrients, pH value, particle size and grain rate.

A mean grain size of P/M Ti materials with CNTs and no CNT is around 6μm and 5μm, respectively, and no significant difference between them is observed.
Number of test specimens, N=3 Materials UTS / MPa YS / MPa Elongation (%) P/M extruded pure titanium 585 423 29.7 P/M extruded TMC with CNTs 742 592 26.0 Conclusions Wet process using the zwitterionic surfactant solutions was effective to coat un-bundled CNTs on Ti powder surface, and assemble them in P/M extruded titanium composite.

Introduction The capability of MMW signals to penetrate obscurants has been well understood for a number of years, but fabrication of a real-time passive MMW imager in a cost effective system has been very challenging.
Figure 1 shows predominantly c-axis peaks of the individual material layers, while no a-axis oriented grains or domains were observed in the YBCO film implying excellent and uniform quality epitaxial grown materials.