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Regression prediction model about the relationship between summer rainfall and grain production was established in [7].
We use the mutation method as follows to avoid infeasible solutions: given mutation probability , bit by bit operate individual as follows: , (5) is a random number in [-1,1], is a random number with normal distribution .

The fine aggregate used was a mixture of tiny grains of rock and granular materials, mainly defined by size, more refined than gravel and coarser than silt.
The vertical axis shows the compressive strength in MPa, while the horizontal axis represents the sample numbers.
Acknowledgements The author would like to acknowledge the support from the Fundamental Research Grant Scheme (FRGS) under a grant number FRGS/1/2019/TK06/UNIMAP/02/6 from the Ministry of Higher Education Malaysia.

The number of contributions offered toward the comprehension of the mechanical behaviour of curved substrates is small, even though in current practice an increasing number of structural elements like arches or vaults are strengthened with external bonded composites.
Its compressive strength, Elastic Modulus, tensile strength and grain size range, are equal to 20.6 N/mm2, 11.42 KN/mm2, 5.42 N/mm2 and 0-1.4 mm, respectively The bond tests have been performed on masonry specimens consisting of ten bricks and nine mortar joints for a whole height of 650 mm.

Table 2 Compatibility of cement A and admixture Experiment number Factor A Factor B Factor C Factor D Factor E Initial Net paste （1h） Net paste （2h） 1 1 1 1 1 1 240 280 270 2 1 2 2 2 2 265 290 260 3 1 3 3 3 3 240 280 280 4 1 4 4 4 4 165 185 175 5 2 1 2 3 4 310 305 300 6 2 2 1 4 3 260 280 270 7 2 3 4 1 2 230 240 210 8 2 4 3 2 1 220 320 310 9 3 1 3 4 2 270 295 290 10 3 2 4 3 1 260 290 270 11 3 3 1 2 4 200 220 200 12 3 4 2 1 3 180 190 170 13 4 1 4 2 3 290 290 235 14 4 2 3 1 4 250 265 225 15 4 3 2 4 1 215 235 215 16 4 4 1 3 2 220 210 160 T11 Initial 910.00 1110.00 920.00 900.00 935.00 　 Test of fluidity of cement slurry Net paste（1h) 1035.00 1170.00 990.00 975.00 1125.00 Net paste（2h) 985.00 1095.00 900.00 875.00 1065.00 T22　 Initial 1020.00 1035.00 970.00 975.00 985.00 Net paste（1h) 1145.00 1125.00 1020.00 1120.00 1035.00 Net paste（2h) 1090.00 1025.00 945.00
955.00 T44　 Initial 975.00 785.00 945.00 910.00 925.00 Net paste（1h) 1000.00 905.00 1005.00 995.00 975.00 Net paste（2h) 835.00 815.00 890.00 950.00 900.00 1 Initial 227.50 277.50 230.00 225.00 233.75 Net paste（1h) 258.75 292.50 247.50 243.75 281.25 Net paste（2h) 246.25 273.75 225.00 218.75 266.25 2 Initial 255.00 258.75 242.50 243.75 246.25 Net paste（1h) 286.25 281.25 255.00 280.00 258.75 Net paste（2h) 272.50 256.25 236.25 251.25 230.00 3 Initial 227.50 221.25 245.00 257.50 242.50 Net paste（1h) 248.75 243.75 290.00 271.25 260.00 Net paste（2h) 232.50 226.25 276.25 252.50 238.75 4 Initial 243.75 196.25 236.25 227.50 231.25 Net paste（1h) 250.00 226.25 251.25 248.75 243.75 Net paste（2h) 208.75 203.75 222.50 237.50 225.00 range Rj(Initial） 27.50 81.25 15.00 32.50 15.00 Rj(1h） 37.50 66.25 42.50 36.25 37.50 Rj(2h） 63.75 70.00 53.75 33.75 41.25 Table 3 Compatibility of cement B and admixture Experiment number
In spite of what has been said done, components of cement, varieties and properties of auxiliary materials, shapes of particles and grain composition cannot be ignored.

The data set for this network consists of 5 inputs, including Ti, Zr, Nb, and Ta, and a total number of 123 points.
The alloy in the solution-treated condition showed course equiaxed β grains with some remaining features of dendritic morphology.
Although the lack of an experimental data set, the present network has achieved good performance due to the accurate selection of network parameters such as the number of neurons and hidden layers.

When the concentration of PMMA is less than 17%, the number of beads will gradually increase with the addition of DMF in the mixture solvent.
But in any proportion of EA and DMF, the number of beads is decreased with the increase of PMMA concentration.
In electrostatic spinning process, with the evaporation of the solvent, the rare earth complexes recrystallization, but time is shorter, the grain size increases too slow, that is limited between the molecular chain of the PMMA.

It can be seen that 13%Cr stainless steel has tempered sorbite with fine grain size and its cementite is granular structure not laminate structure.
It is due to the characteristics during buttress thread turning process as mentioned above. 0 10 20 30 40 50 0.05 0.10 0.15 0.20 Number of threads Insert A Insert B VB (mm) 0 10 20 30 40 50 0.00 0.05 0.10 0.15 Number of threads Insert A Insert B VB (mm) (a) Left edge (b) Right edge Fig. 8 Curves of flank wear on left and right cutting edges Chip Breakage.

In this way, the acquired grading curve would essentially reflect the grain size characteristics of construction waste and the construction waste grading curve is shown in Fig.1.
Most of the particles are bigger than size 10mm, bulky ones are relatively concentrated and smaller ones are of small number which is not even enough for filling the void created by coarse particles, resulting in an adverse structure of smaller granules “suspending” in a vast sea of coarse particles [1].
Given the relatively smaller number of chunk material in construction waste, backward spreading is adopted.

Scan electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to determine the grain size, shape, degree of nitrogen incorporation and nature of the resultant oxynitride chemical bonding.
The most surprising is the change of the position and number of exothermic peaks.

It has also been found that strong overheating of alloy above Tliq "enhances" the process of modification, resulting in the formation of fine-grain structure.
Additionally, rapid heat transfer refines alloy structure, raising the number of potential substrates for heterogeneous nucleation of Si.