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The correlation between the microstructure and microwave dielectric properties was also investigated.
Further increases in composition x result in the degradation of grain uniformity, while a porous microstructure is observed at the compositions higher than x = 0.08, which may directly affect its microwave dielectric properties.
The increase in apparent density may directly improve the microwave dielectric properties.
Several factors influence the microwave dielectric loss and can be divided into two partial factors which are intrinsic loss and extrinsic loss [15].
Ohsato, Microwave dielectric properties of BaxLa4Ti3 + xO12 + 3x (x = 0.0–1.0) ceramics, J.

Their identical properties such as high surface porosity and perfectly patterned pore structure, which is combined with mechanical strength make them ideal for many applications such as microorganism removal, blood filtration and protein purification.
Plasma treatment is widely used to tune the surface properties of many polymers (e.g.
SU-8, Polyimide and PDMS) to promote adhesion or to enhance wetting properties [6,7].
PDMS, PMMA, PC, SU-8 and, etc.) to promote adhesion or to enhance wetting properties [14].
It should be noted that membrane fouling related to many factors such as membrane properties (i.e. pore size, material, hydrophilicity/hydrophobicity and, etc.), solution properties (i.e. concentration, particle size, and, etc.) as well as operation conditions (i.e. pH, temperature, flow rate and, etc.) which all need to be take into account during a filtration process [1-3].

Seawater Flow Characteristics and Drag Force Variation with Inflow Angle in Tidal Current Turbine System Jong-Won Kim1,a, Sang-Ho Lee2,b 1Graduate school of Mechanical Engineering, Wonkwang University, 570-749, Ik-san, Cheonbuk, Republic of Korea 2Department of Mechanical and Automotive Engineering, Wonkwang University, 570-749, Ik-san, Cheonbuk, Republic of Korea akjw2kkin@wonkwang.ac.kr, blsheagle@wonkwang.ac.kr (corresponding author) Keywords: Seawater flow characteristics, Drag force, Tidal current turbine system, Shroud, Inflow angle.
Seawater velocity distribution is largely affected by the current direction flowing into the turbine system including shroud.
As recent studies, fluid flow characteristics in the diffuser-type shrouds of power generation system which is operated by river flow were analyzed, and the turbine efficiency was predicted with the momentum source factors through CFD [1, 2].
Tidal current velocity (u∞) is assumed to be 2 m/s as inlet boundary condition, and physical properties of seawater are used at the fluid temperature of 17 ˚C.
Gaden, An investigation of river kinetic turbines: performance enhancements, turbine modeling techniques and an assessment of turbulence models, Master’s thesis at the University of Manitoba, Department of Mechanical and Manufacturing Engineering. (2007)

Water depth and wave Water depth and wave that is the impact of offshore wind farm development is 2 important natural factor.
Water depth not only directly affect the base size and mass, and the influence of wave generat load.
Sea water corrosion Metals in seawater corrosion of external factors Metals in seawater by chemical factors, physical factors and biological factors and occurrence of damage.
Because the metal is in the grain boundary, the physical properties of inhomogeneous; actual metal material general contain some impurities, and chemical properties are not uniform; and the concentration of dissolved oxygen in seawater and seawater temperature, may not distributed uniformly.
Which unit failure, will not affect the other unit.

K represents the number of factors or variables being examined in experiment.
Five important variables as essential factors that extensively affect polymer properties were selected.
The results show different formulation of MIP pre-polymerization could extensively change MIP properties.
Furthermore, the results showed that, in most cases, interactions exist between key important factors.
The obtained results showed the utility of the chemometric approach to determine factors with significant effect on response as well as interactions between the key important factors.

Introduction In general, fine-grained steels are expected to have higher mechanical properties than conventional steels according to Hall-Petch relation.
Accordingly, mechanical properties of NFG600 were different from SM490 as expected by Hall-Petch relation.
Mechanical properties obtained by tensile test and micro Vickers hardness test are summarized in table 2.
Mechanical properties by tensile and hardness test.
Therefore, it would be difficult to distinguish the effect of grain size from the effect of mechanical properties such as hardness for the fundamental of occurrence of σ33.

The paper analyzes how the grade of wheel and the grinding speed affect Ra surface roughness parameter.
Despite its prevalence in mechanical engineering, creep-feed grinding of titanium-based alloys is still believed to be the most problematic process.
Grinding parameters being altered while the abrasive wheel moves along the workpiece does affect the roughness of the machined surface (Fig. 2).
The abrasive wheel characteristics do not have a significant effect on the general morphology properties.
Bairamov, Factors affecting the surface roughness in the deep grinding of titanium alloys, Russian Engineering Research. 7 (2015) 549–553

Introduction Foamed concrete is made by fully turning foaming agent into foam in mechanical way or compressed air with foaming system.
Foamed concrete has the following properties: 1, light; 2, good thermal insulation properties; 3, good soundproof and fireproof performance; 4, good waterproof performance; 5, low elastic and good damping properties; 6, convenient in production and processing; 7,good environmental performance; 8, consuming a lot of industrial waste and low price etc.
Because its properties are in line with the national energy conservation and carbon emission reduction trends, it gets a wide range of applications and rapid development [1].
The characteristic parameter of pore structure of foamed concrete includes porosity,pores diameter,pore uniformity,wall thicknessof pore etc.The porosity of foamed concrete is big commonly,especially low density(≤500kg/m3) foamed concrete,its porosity reaches 65% or more than; It is well known that increasing porosity is sure to reduce stress area of material internal cross section,so then reduce its mechanical property.To achieve established strength, porosity must be controled in determinate range.Some scholars [2] think that if porosity is fixed,decreasing pores diameter is favor to raise strength of foamed concrete; But some scholars take the opposite view[3].So how is the truth of the matter?
It can be seen from the formula in Table 3 that : 1) the greater the porosity, the more the number of pores, the greater the inner surface area of the pores, the thinner the pore wall, and vice versa; 2) The smaller the pores diameter, the more the number of pores, the greater the inner surface area of the pores, the thinner the pore wall, and vice versa; Thus, the porosity and the size of pore are the main factors affecting the pore structure.

Iron and steel matrix composites reinforced with TiB2/TiC ceramic particulates have been the focus of intensive investigation due to their ease of fabrication, low costs and isotropic properties.
For this reason, MMCs with fresh, ultrafine and stable ceramic reinforcements can demonstrate outstanding mechanical properties [6].
The second theme is the relationship between microstructural and mechanical properties, notably weldability and the ductile brittle transition temperature of these steel matrix composite (TiB2-RSMCs) sheets recently invented and developed by the ARCELOR Research Group in France [1].
In this case, observing the evolution of applied force with time provided more detailed information about the mechanical properties of each zone of the steel matrix composite.
impact tensile properties of the steels under crash test.

Springback is the key factor for die designers needed to be considered during sheet bending processes.
In present study, V-bend tests were performed to examine the springback property of AZ3 sheet at room temperature and the elevated temperatures.
Its chemical composition and mechanical properties are shown in Table 1.
Table 1 Chemical composition and mechanical property of AZ31B sheet Mainly composition[%] Mechanical property Al Mn Zn Si Be Tensile strength [MPa] Yield shrength [MPa] Elongation [%] Hv [0.5kg] 3.19 0.334 0.81 0.02 0.01 300 220 18 75±5.0 It's well known that any complex bending can be treated as being composed of several v-bendings, so v-bending was selected in the experiments, and the bending line is vertical to the direction of sheet rolling.
Conclusions The springback angle of 0.8mm AZ31B magnesium alloy sheet is affected significantly by the temperature.