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Extrusion process of metals is carried out at warm and hot temperatures, consequently, process modelling has been investigated by two independent approaches: the mechanics of metal flow and the metallurgical evolution of microstructural features such as grains and porosities.
The required time step to attain numerical stability in the numerical convergence process was Dt = 10-18 s, and the number of iterations loops was approximately 30.000 loops. 32.3° 30 mm 10 mm DIE Fig. 3.

Moreover, the eutectic Si modification and grain refinement can be simultaneously obtained in the Al-Si-Mg systems because Al2Ca behaves as Ca, a typical Si modifier [15].
It is noteworthy that a number of the distributed impurity particles which would be related to adsorbed Ca atoms to be segregated away from the Si interface associated with impurity induced twinning [18].

Furthermore large number of branched chains generated more oxidation, which is in keeping with the increase of oxidative product described above.
On one hand the micro-molecule produced by degradation is active to have secondary crystallization along original grain structure, which increase the crystallinity, on the other hand the oxidation products generated in chain structure will disrupt the regularize crystal structure decreasing the crystallinity.

This consequently results in the smaller grain size of SN doped TiO2 (10.3 nm) film compared to those of pure TiO2 (11.0 nm) (Table 1).
The number of viable colonies of S. aureus when added to TiO2, SN doped TiO2 and control, exposed to UV light irradiations within 150 min, were 43, 63 and 7%, respectively as shown in Fig. 5. 0 min 90 min 150 min Control TiO2 SN doped TiO2 Fig. 4 Photo images for the results of S. aureus test with TiO2 and SN doped TiO2 coated stainless steel under UV light irradiation.

Mediterranean forest fires have occurred mainly in south part due to climatic peculiarities: high average annual temperatures, less number of rainy days and a large portion of wooded surfaces.
A low-Mach number approximation reported by Rehm and Baum [9] of the governing equations for mass, momentum, and energy is used; a large-eddy simulation (LES) approach for turbulence modeling proposed by Smagorinsky [10], provides a time-dependent, coarse-grained numerical solution to those equations.
The turbulent Schmidt and Prandtl numbers are set to SCt=0.5 and Prt=0.5, respectively, based on comparisons between FDS and compartment fire experiments Ritchie et al. [18] .
High average annual temperatures and less number of rainy days to the moisture of vegetation behavior to the fire propagation (damping effect of the moisture content).
The recent occurrence of forest fires has no historical precedent, as evidenced by the number of fires and their extent in some Mediterranean countries.

The reasons is mainly due to the role of the fine grain composition theory of fly ash, "deflocculation effect" in the paste and ball bearing effect of spherical particles in fly ash, and the latter reason is the chief cause.
When the fly ash content is over 30%, with the fly ash content increased, the fluidity decreased, it may be caused by that a large number of fine particles in MPC which mixed 40-50% fly ash needs more water to wet the surface area resulting in the fluidity of MPC mortars decreased.
It can be seen from Fig.8 that the main compound of hydration products are MKP (MgKPO4•6H2O, MgKPO4•H2O), unreacted MgO and SiO2, also, a large number wide peaks are present in XRD patterns of MPC pastes indicates that a certain amount of amorphous hydrated products and gelatinous substances are contained in hydration products, therefore, the compound of hydration products of MPC paste are MKP, MgO particles, fly ash particles and amorphous hydrated gelatinous substances.
Nevertheless, sharp diffraction peak of MgO are detectable and there is still a large number of MgO are exist in M1F3-28d, the reason is that the activity of dead-burned MgO alcined at 1500 is extremely low, so it has little influence on the latter strength of MPC based materials.
It seemed that fly ash particles filling the pores of paste to make the structure of cement paste compact ( as shown in Fig.9(a)); it can be seen more clearly from Fig.9(b) that fly ash particles are covered with a large number of hydration products and C-S-H gel.

In nanoscale form, the amount of lattice defects such as oxygen vacancy and grain boundary increases the contact area and promotes the catalytic efficiency.
To it was added the suitable concentration divalent ion aqueous solution (Zn+2 salt) as ligand coordination number which is likely to play an important role, and also 0.5 -2 mg protein α-lactalbumin aqueous solution.
Furthermore, Figure 5 shows three curves which were measured by a nano zeta sizer with a Nano-ZS Malvern, (a) displays the size distribution by number in which 100% of these nanoparticles have diameter of 3.55nm, (b) the curve of size distribution by intensity that can show the diameter size of 3.93nm and 10.9 % intensity, and finally (c) shows also the size distribution by volume in which 99.9% volume have the diameter size of 3.73 nm.
(a) size distribution by % number (b) size distribution by % intensity (c) size distribution by % volume Fig. 5.
The various curves of size distribution by (a) % number, (b) % intensity, and (c) % volume versus diameter size (nm) after one year from synthesis of product-5.

The primary porosity in organogenic structures widely developed in the zone of the upper sublittoral is much higher than in fine grained sludge and is due to the presence of a void space in the internal cavities of brachiopods, crinoids, gastropods, stromatopor cells, septums of corals, as well as voids as a result of loose packing between the carcass species.
Knowledge of the sedimentary and tectonic structure in the regional plan allows justifying the modeling technique and, thereby, reduces the number of iterations in the creation of the three-geological model, as well as achieving the greatest possible accuracy.
The carbonates are dominated by biogenic ones, but in a number of places an important role is played by chemogenic carbonates. 3.
The reef deposits are formed with the simultaneous action of a number of factors, which leads to the formation of sedimentary bodies of various configurations with different PPP.
Before creating a 3D grid, it is necessary to analyze a number of factors affecting the structure of the reef body including a list of reef structuring organisms, the presence and nature of secondary changes, determine a type of the modeled organogenic structure (simple, complex or differentiated).

The crystallinity of the anatase phase could be enhanced when films are deposited at an optimal sputtering pressure using sputtering gas with a smaller atomic number.
The reason why N-TiO2 films exhibit a stronger and sharper intensity at (101) and (105) can be ascribed to the smaller atomic number of N2 gas, compared to that of larger argon atoms.
The effect of sputtering gas with a smaller atomic number was similar to a lower pressure in the chamber.
The N-doped films also show a typical polycrystalline structure and pyramid-like surface exhibiting a grain size of 100-150 nm, which has usually been found in pure DC-sputtered TiO2 film [22 S.
These results are due to the increasing number of trap sites formed by the excessive atomic β-N dopants in the film, creating more photo-generated carriers to be captured and making it more difficult for photo-generated carriers to be transferred to the film surface where reaction takes place [8].

Selecting higher jet pressure and moderate traverse speed, in combination with a moderate number of passes is beneficial for AWJM.
They concluded that the machinability (MRR) is poor in SLM compared to the wrought titanium which was attributed to the lower tensile strength and brittle nature of the SLM due to the short grain microstructure.
They performed SS304L slotting at constant abrasive mass flow rate, abrasive grain size, and velocity of abrasive particles while altering the mixing ratio, jet pressure, and SOD on MRR and kerf taper.
In AWJM material removal in the case of brittle material is due to the crack initiated by abrasive grain and its penetration into the material.