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Density is the weight per unit volume, and will increase with increasing atomic number in their subgroup[5].
This condition is due on hydriding process of the U-Zr alloy to form uranium hydride (U-ZrHx) from pieces of U-Zr ingot that does not irregular, then the hydrogen will be absorbed in the Zr metal to form ZrHx at the grain boundaries which lead ingots U-ZrHx become brittle and have irregular shapes.

Silica produced from rice husk has finer grains than mineral silica, is renewable, and contains relatively high silica, which is more than 80% [7].
In the FT-IR spectra, there is a shift in the characteristic absorption of silicate material at wave numbers 1620 cm-1, 779 cm-1, and 462 cm-1, which is assumed to be BTA in silicate.

All fatigue tests were run to the failure or separation of the specimens, and the corresponding cycling number was defined as low-cycle fatigue life Nf.
Meanwhile, the cyclic strain hardening behavior is also related to the obstructive effect of solute atoms, secondary phases, grain boundaries, phase boundaries and subgrain boundaries on dislocation motion.

Also, damping capacity of SMA depends directly on external variables such as heating rate, frequency and oscillation amplitude; and internal ones such as the type of material, grain size, martensite interface density, structural defects [4].
As this density increases, damping capacity gets higher until an optimum point, when the number of defects starts to prevent the movement of twin interfaces, responsible for damping behavior [3]. 20 40 60 80 100 120 140 0,000 0,005 0,010 0,015 0,020 0,025 0,030 0,035 Tan δ Temperature (°C) SMA NiTi Aluminum Stainless Steel Brass 300 320 340 360 380 400 Temperature (K) Figure 1.

The number in the parenthesis is the standard deviation Group 1 Group 2 Group 3 Group 4 Ra(�) 0.81(0.34)a 0.43(0.11)c 0.75(0.33)a,b 0.55(0.26)b,c Rq(�) 1.15(0.49)a 0.60(0.20)c 0.96(0.42)a,b 0.73(0.37)b,c Rz(�) 9.04(4.63)a 4.65(3.76)b 5.98(2.63)b 5.15(2.82)b a�b >c at P<0.05 In the SEM observations(Fig. 2), c.p.
HA/FA-coated ZrO2 implant and FAcoated ZrO2 implant show a micro-porous and rough coating structure with grain and pore size of several micrometers.

Inhibition zone method: the bacterial solution was diluted by an appropriate number of times, and 100 μL was coated on solid medium and put the sample on top, which was incubated in an incubator at 37℃ for 24 h.
The number of colonies on each medium was counted.
The antimicrobial rate was calculated as in Eq. 2.: Antimicrobial = (M-N)/M×100% (2) Where M and N referred to the number of colonies after 24 h of the control sample and the number of colonies after 24 h of the test sample, respectively. 3.
From Fig. 2(a) and (b), it can be clearly seen that the ZnO crystalline grains exhibit a typical hexagonal structure, which were consist with the result of XRD pattern [36].
Interestingly, With the rise of CNTs content in the composites, the characteristic peak of Zn-O groups slightly shift to high frequency region, which was attributed to the increase the size of ZnO crystal grain [44].

Ca3-xMgxCo4O9 ceramics contain plate-shape but randomly oriented grains with layered crystal structure.
According to the Wiedenmann-Franz’s law, κc = LσT, where L is the Lorenz number.

A number of countries have widely studied and adopted applications of various waste materials in the construction sector through a reuse or recycle procedure by assessing global sustainable resource conservation.
The grain size distribution of IBA is shown in Fig. 1.

Judging from the grading curve as shown in Figure 1, it could be concluded that loess is well-graded with an effective grain diameter no greater than 0.0015, a constrained diameter of 0.03, therefore a uniformity coefficient greater than 20.
As aforementioned,10 models are needed for the test, which are marked, according to their use, with numbers from MX-1 to MX10.

The span of specimen is 500mm,being loading at the point located at the middle of the span, the displacement is controlled at the rate of 0.2mm/min.The test selected ordinary Portland cement signed 42.5 branded of Huari which density is 3000kg/m3; medium sand which density is 2630kg/m3 and fineness modulus is 2.6; gravel which density is 2930kg/m3 and maximum grain size is 31.5mm; powdery defoamer P803 and Huawang naphthalene series super plasticier provided by Shantelonghu scientific industry company ; steel fiber produced by changhong steel fiber company in Anshan, which steel fiber A with the type of sheared thread ,its length is 32mm，length/diameter aspect ratio is 31, tensile strength is 600Mpa; steel fiber B with the type of super short and fine, its toughness is high and length is 13mm，length/diameter aspect ratio is 64，tensile strength is 2000Mpa; steel fiber C with the type of shear indentation, length is 34mm，length/diameter aspect ratio is 32，tensile strength is 1200MPa; polypropylene
Table 1 The scheme of orthogonal concrete mix proportion group number water ／Kg cement ／Kg D Kg slag powder ／Kg sand／Kg gravel／Kg A /Kg B /Kg E /Kg C /Kg water reducer % deformer % SP-1 180 450 50 0 593 1202 40 8 0 0.3 0.6 0 SP-2 180 350 150 0 578 1174 80 8 0 0.3 0.6 0 SP-3 180 350 150 0 578 1174 40 24 0 0.3 0.6 0 SP-4 180 450 50 0 593 1202 80 24 0 0.3 0.6 0 SP-5 180 350 150 0 578 1174 40 8 0 0.9 0.6 0 SP-6 180 450 50 0 593 1202 80 8 0 0.9 0.6 0 SP-7 180 450 50 0 593 1202 40 24 0 0.9 0.6 0 SP-8 180 350 150 0 578 1174 80 24 0 0.9 0.6 0 SP-9 180 400 100 0 585 1188 100 26.8 0 0 0.6 0 SP-10 180 400 100 0 585 1188 120 29.6 0 0 0.6 0 SP-11 180 400 100 0 585 1188 140 32.4 0 0 0.6 0 SP-12 180 500 0 0 599 1216 0 0 120 0 0.6 0 SP-13 158 428.7 0 183.7 618.5 1145.1 0 0 0 0 2 0.01 Flexural toughness test Table 2 shows the index[8] of toughness evaluation.