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Increasing of casting speed can refine grain size, decrease the thickness of segregation layer in periphery of billet and improve surface quality of billet [4-6].
Acknowledgments The authors gratefully acknowledge the supports of the doctoral foundation of China Ministry of Education (Grant number 20130042130001) and the Science and Technology Program of Guangzhou, China (Grant number 2015B090926013).

One of the most important hardening mechanisms in concrete is the junction with bridges between aggregate grains.
Lubricator Number of tested specimen [pc] Number of successful tests [pc] Success [%] Oil 25 4 16.0 Wax 30 12 40.0 The influence of the chosen form lubricator to the results The influence of the chosen form lubricator markedly influenced the amount of the caverns in the specimens and it had a definite action on the tests.

Apart from a large number of investigated phosphors, only a few of them can be exploited in practice and covalent nitride compounds are assumed as the most attractive ones because of their plentiful emission colors, high quantum yield and low thermal quenching.
The grain size and morphologies of the samples were observed by a Hitachi 3400N scanning electron microscope (SEM) operated at 25 kV.
Since the photoluminescent (PL) properties and QY do not correlate directly with the purity of the phase composition, the silicon/aluminium ratio or particles morphology it is clear that the observed variation in the PL properties must be related to a number of Eu2+ ions successfully placed in the appropriate Ca2+ sites of the Ca,Eu-a-sialon structure.

Based on the Inorganic Crystal Structure Database (ICSD) number 98-009-9860, LiFePO4 has a lattice parameter value of a = 10,294 (Å); b = 5.986 (Å); c = 4,675 (Å).
The hope that should occur is the change in electron density in the battery doped with Gd3+ ions at a greater concentration, which can be explained because the atomic number of Fe (56) is smaller than that of the Gd atom (157).
The higher the Gd3+ ion concentration the greater the grain size, which is also accompanied by an increase in homogeneity and density.

The structure of sample SC 3, (500X, chemical etch- Nital 10%, maintaining time 4–5sec) a) basic material, b) HAZ, c) weldind bead BM –basic material; has a ferrite-pearlite structure HAZ – heat affected zone; it is composed of ferrite and spheroidal pearlite Welding bead – has a structure formed by spheroidal pearlite and ferrite grains and it can be observed a columnar shape orientated in the direction of the solidification front.
Acknowledgements: This paper is supported by the Sectoral Operational Programme Human Resources Development (SOP HRD), financed from the European Social Fund and by the Romanian Governmentunder the contract number POSDRU/159/1.5/S/137070.
Iovanas, Method and device for electrically charging the powders used in the reconditioning processes by metal-sprayed coating, Patent Number: RO128810-A0, Patent Assignee Name and Code: UNIVERSITY BRASOV TRANSILVANIA (UYBR-Non-standard)

Table 1 Thermal conductivity for several materials[8,9] Ceramic materials AlN BN Si3N4 SiC Thermal conductivity /[W·m-1·K-1] 230.5 251.4 25 251.4 Table 2 The added materials and their amount Sample number A-0 A-1 A-2 A-3 A-4 Additive materials - AlN BN SiC Si3N4 Addition amount[wt%] - 5.00 5.00 5.00 5.00 Experimental Procedure Experimental formula and sample preparation.
Fig. 5 The top surface temperature (A) and calculated thermal conductivity (B) of the composites sintered at 1560°C Table 3 True porosity of samples sintered at 1560°C Sample number A-0 A-1 A-2 A-3 A-4 True porosity[%] 6.6 3.4 12.2 16.8 12.9 Fig.6 XRD patterns of all samples Effect of adding different high thermal conductivity materials on the performance of thermal conductivity.
Firstly, the thermal conductivity of the materials is highly depended on comprehensive influence of varieties and quantity of crystalline phases, crystalline structure, grain size, density and other factors.

Table 5 Raw materials mixed with municipal sludge Municipal Sludge ingredients（%） ratio value The sample number dosage The limestone sandstone Iron powder bauxite Coal ash KH=0.91 SM=2.6 IM=1.6 1 0.00 85.64 5.90 2.03 6.43 3.17 5.00 82.40 5.32 1.93 5.34 3.09 10.00 79.17 4.75 1.84 4.25 3.01 15.00 75.93 4.17 1.74 3.16 2.93 2 20.00 72.70 3.59 1.64 2.07 2.85 25.00 69.47 3.01 1.55 0.98 2.77 29.44 66.60 2.50 1.46 0 2.70 KH=0.94 SM=2.6 IM=1.6 10.00 79.64 4.57 1.79 4.00 3.01 3 15.00 76.38 4.00 1.69 2.92 2.93 20.00 73.13 3.43 1.60 1.84 2.85 25.00 69.88 2.86 1.51 0.75 2.77 28.46 67.64 2.46 1.44 0 2.71 Clinker calcination method.
Fig. 4 showed that when the city sludge ash was 20%, clinker sample has a large number of low-temperature calcination of C2S.
Clinker mixed with sludge had less inclusions, clear grain boundary, and uniform intermediate phase, which were slightly better than blank morphology not-mixed sludge.

Introduction: Ferrimagnetic ferrite materials are of great interest in the past as well as in the recent years due to their useful electromagnetic properties, for a large number of applications from microwave to radio frequencies [1].
The importance of spinel ferrite in their bulk form (grain dimensions is in micrometer scale) is limited to a few megahertz frequency due to their high electrical conductivity and domain wall resonance [3,4].
D=σKBTNe2 (3) Where σ is the dc electrical conductivity, N is the number of atoms/m-3, e is defined above, and kB is the Boltzmann constant.

High wear resistance of thermal sprayed cemented carbide coatings causes a large number of studies related to both their preparation and study of properties [4-10].
This parameter was determined by dividing the mass of the deposited coating by the mass of the powder ejected by the powder feeder for a given number of shots.
Fig. 2 shows the microstructure of coatings, where it can be seen that the carbide grains of the WC/Co coating are much smaller than the ones of the Cr3C2/NiCr coating.

Previous study showed that grain yield was seriously affected by water deficit at silking or heading of maize [1].
Blank model was described as =i (1) where Ya is the actual crop yield, Ym is the maximum yield under full irrigation, n is the number of growth stages, i is the serial number of growth stage, ETa is the actual evapotranspiration at the stage i, ETmi is evapotranspiration at stage i corresponding to Ym, and λi is the WSI at stage i.