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Indonesia with abundant limestone raw materials, lightweight brick is the most important component in building construction, so it needs a light brick product that qualifies in thermal, mechanical and acoustic properties.
Introduction Energy consumption of a building is effected by various factor, one of which relates to the thermal insulation properties of materials being used.
In case of AAC, factors that affect the thermal conductivity are as follow : density, moisture content, temperature, porosity and mineral composition [1,5].
ANN has been widely used in various recearch to and mechanical properties [4,7].
Comparison between predicted value and measurement value of thermal conductivity AAC samples Sample Target (W/m.K) Prediction (W/m.K) AAC1 0.214 0.243 AAC2 0.212 0.290 AAC3 0.214 0.320 AAC4 0.214 0.320 3.2 Discussion One of the factors that affect the amount of Al in AAC is the use of aluminum powder as pore foaming agent.

The strength characteristics of concrete are not affected by the quality of recycled aggregate at higher water cement ratio, it was only affected when the water cement ratio is low.
Results and Discussions: The properties of materials especially the aggregates were driving force towards designing the mix.
These two observations contribute towards better packing properties in concrete and further decrease in pores.
Density of concrete is another important factor.
The physical and Mechanical properties of Recycled Concrete aggregates are important factors governing the strength characteristics of the concrete.

Thermo gravimetric analysis, Core/Sand pack experiments and water drive displacement tests of copolymer particles were used to evaluate the properties.
The structure and properties of the copolymer were also investigated in this paper.
Moreover, change some factors which can more affect the molecular weight of copolymer, such as reaction temperature, the molar ratio of monomers and the concentration of initiator.
To obtain more comprehensive result, one condition of some factor fit together with every condition of other two factors.
This means molar dose of VTEOS and the concentration of BPO are major factors for molecular weight of copolymer.

Effect of Rice Husk Ash Fineness on the Properties of Concrete Dewi Sri Jayanti1,a, Ramadhansyah Putra Jaya2,b*, Norhidayah Abdul Hassan3,c, Md.
In the present research, the effect of rice husk ash fineness on the properties of concrete was studied.
Workability, compressive strength and gas permeability tests were carried out to identify the properties of concrete.
Previous studies showed that grinding of pozzolanic material, such as POFA, FA and RHA, into a high degree of fineness is the major factor affecting compressive strength of cement concrete [3].
The objective of the present investigation is to evaluate the influence of RHA fineness on the properties of hardened concretes.

Die Casting Process Simulation Analysis .There are many factors that affect the quality of the die casting.
The worse the mechanical properties and the effect of casting filling are getting.
Therefore, these factors equal errors.
The casting filling effect and mechanical properties are good.
When pouring temperature is above 630℃, the temperature will be the main role on the shrinkage and grain coarsening when thermal expansion and contraction, With the pouring temperature increased, the filling effect of the castings and mechanical properties of the worse.

The size effect peculiarities in NMs are analyzed and the complex influence of grain size and other factors on NM properties is emphasized.
Table 3 shows the electrical properties of oxides with different grain sizes [18-20].
Table 3 Electrical properties of microcrystalline and nanostructured oxides.
It is evident that thermal activation and other factors such as radiation, deformation and chemical reactions lead to the enhancement of diffusion, relaxation and recrystallization with particular or total annihilation of nanostructure, nonequilibrium phases, different defects and residual stresses that are responsible for the NM properties.
Therefore, an understanding of the factors that affect NM stability and degradation is critical to identify the best strategies for future technology development.

The chemical composition and mechanical properties of Q235A steel are shown in Table 1 and Table 2.
Material properties of common seal face are shown in Table 3.
Material and properties of commonly used in packing seal[10] categories materials properties fiber natural fiber cotton, bast, fur etc.
Each material has its own characteristics and use conditions，which is an important factor to affect the bearing properties and manufacturing costs.
And the sealing materials of rotary joint that have a direct impact on the recovery rate of yellow phosphorus are one of key factors in restricting the air tightness of the device, so the material choice of rotating seal joint is particularly important

And droplet formation, size, transition mode and droplet behavior are very important factors for affecting weld seam forming, welding quality and overall performance.
The Influence of Magnetic Field on Mechanical Properties.
Lin Zong analyzes the influence of longitudinal alternating magnetic field on mechanical properties of magnesium alloy welded joint [27].
The results reveal that welding current is 60A, magnetic field current is 2A, magnetic field frequency is 20Hz, the mechanical properties of weld joint are achieved the best value, the hardness is 76.2HV, tensile strength is 231MPa.
The interaction of the waveform of exciting current as well as the phase between welding current and exciting current on arc shape, droplet transfer, microstructure and mechanical properties of the weld joint is not fully clear.

This report describes the rolling contact fatigue properties of the sintered and carburized compacts made of the molybdenum hybrid-alloyed steel powder.
Moreover, the mechanism of the improvement in the rolling contact fatigue properties in the sintered steel is also discussed.
Results The mechanical properties of the sintered and carburized compacts are shown in Table 2.
There are no large differences in surface and subsurface Table 2 Mechanical properties of the sintered and carburized compacts made of the hybrid-alloyed and the prealloyed steel powders.
The reduction of coarse pores, acting as stress concentration points, should affect suppressing a fatigue crack generation.

Introduction The spindle is the main mechanical component in grinder.
The static and dynamic stiffness of the spindle directly affect the grinding productivity and quality [1].
The structural properties of the grinding spindle depend on spindle shaft, bearings, stator, rotor, grinding wheel and the spindle assembly.
Angular contact ball bearings are most commonly used in high-speed spindles due to their low-friction properties and ability to withstand external loads in both axial and radial directions.
The stiffness and damping of bearings is related with the structure, lubrication, load, vibration and other factors of bearings.