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An important area of investigation in ceramic materials relates to ceramic powders with small grains, and in particular to the study of nano-scaled powders used during the preparation of ceramics for high value added applications.
With developments in materials science and technology, tight specifications for BaTiO3 powders are now demanded with required characteristics including fine grain size, presence of few agglomerations and uniform composition, whilst having higher dielectric constant.
Spinels containing transition metal ions can act as efficient catalysts in a number of heterogeneous chemical processes, such as CO oxidation, catalytic combustion of hydrocarbons or selective oxidation and reduction of several organic molecules [64, 65, 66].
The grain surface is less contaminated as a result of the supercritical drying, and microstructure development during sintering leads to a homogeneous fine-grained microstructure.
The colloidal particles offer a number of potential advantages over conventional surfactants, such as a reduction of foaming problem, lower toxicity and lower cost.

However, real crystals are far from ideal; they have invariable number of imperfections that give rise to localized levels within the otherwise forbidden band-gap that describes an ideal material.
Lovedy Singh of the group, number of complex glow curves have been analyzed and the physical significance of the extracted parameters have been justified in a number of research papers[8–12].
It is to be noted that da Silva et al.[35] have used number methods for analysis.
The program has been extensively used by the Polish Group led by Wojtowicz for number of materials [74,75,40].
Lang, OSL dating of coarse-grain fluvial quartz using single-aliquot protocols on sediments from NE Peloponnese, Greece, Quat.

Introduction The study of fluid flow and heat transfer through porous media is important and has received a lot of attention for many years due to its broad range of applications such as geothermal systems, grain storage, filters, packed bed reactors, porous burners, to name but a few.
The steady, elongated and closed near-wake becomes unstable for Reynolds numbers above the critical Reynods number Recrit (Fig. 3(c), 3(d)).
Reynolds number for the flow past a square cylinder.
Integrating the local Nusselt number over the surface of the cylinder one can obtain the average Nusselt number Nu defined as: (8) Figure 12 - Time-averaged Nusselt number vs.
It can be seen that, as expected, when the Reynolds number increases the Nusselt number increases.

According to the use of the request, the community numbered D3-D7, energy-saving transformation.
Solve moisture dew technology: wall insulation was designed with two insulation systems, EPS Board and thin plastering exterior insulation system, gelatine powder EPS grain thermal insulation mortar exterior thermal insulation system, after repeated demonstration and testing, decided to adopt the EPS Board and thin plastering technology is more mature systems.

The average grain size for the alloy was about 20 mm after water quenching.
The work revealed that solute clusters of Ni and P atoms were present in the Cu-Ni-P alloys and the number density of the Ni-P clusters in the material annealed at 250 ℃ for 103 s was approximately six times larger than in the cold-rolled condition as described in [1].

Moreover, in general, one assumes that a network component of the specific heat, in the case of iso-structural compounds, is very close to itself and decreases pursuant to an increase of atomic number of an element i.e. from La to Gd [14].
The third component, related to dispersion at grain boundaries, is in this case negligibly small [19].

The effect of load on scratch depth is more prominent at higher number of scratching (³ 1000) than that at a lower value of the same (= 25).
The mechanism of improvement in microhardness in the composite layer is due to both grain refinement and dispersion strengthening.

The mechanical properties of the grains and fruits and vegetables at home and abroad were also studied [14-15] but there were very few analysis of the mechanical properties of the hot-pepper in the process of drying.
Each hot-pepper sample need be measured,weighed and recorded according to the order of number before each experiment .

Thus the usage of modern materials like fine grained high strength steels does not lead to remarkable improvement of the fatigue strength under alternating or partially tensional loading conditions if the same welding procedures are used.
Thus it can be understood very simply, that this notch can be found in a high number of cases as the critical crack initiation site.

The grain size analysis results of cement, limestone powder and fly ash are summarized in Table 3.
The content of particles less than 3μm in the cement and fly ash is quite low, thus a great number of fine limestone powder particles can fill in the gap between the cement and fly ash, to improve the particle gradation of the cementitious material, so as to improve the structure and rheological performance of the cement paste.