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River sand (grain size not more than 1 mm) was used as the abrasive material.
The number of tests in the experiments varied from 3 to 20.
In this case, the allowance for final machining is reduced and, accordingly, the number of final machining operations of the coating is reduced.
The technological process was adopted for implementation at a number of enterprises of the Bryansk region.
The main factors that determine effectiveness of the technology are: - reduction of the production floor space occupied by the technological equipment due to the change of process of the technological scheme and the use of a single rectifier in the operations of anodic treatment and plating; - reduction of the time and electric energy spent on restoration of components due to the increased productivity of iron plating process and reduction of the number of operations; - reduction of the consumption of materials for preparation of electrolytes due to reduction of operation of anodic treatment and washing; - improving the reliability of the technology due to enhancement of its structural flow chart.

The initial feedstock for the SLM process was composed of recycled cermet (with average cobalt content being close to 8 wt %) powder (further called in the text as recycled WC) with the particle size 20-45 μm (Set 1 - Table 2) or less than 20 μm (Set 3, 4/1, 4/2 - Tables 4 and 5), or fresh WC with grain size close to 1 μm (Set 2 – Table 3), suitable for 3D printing, mixed with 50 vol % of fresh Co powder (Fig. 1 a,b,c).
SLM parameters for printing Set 1 (WC-Co recycled 20-45 µm; Co fresh 20-45 µm) of samples Sample number 1 2 3 4 5 6 7 8 Point distance, µm 30 20 30 20 30 20 30 20 Exposure time, μs 60 27 75 33 90 40 105 47 Power, W 84 84 84 84 84 84 84 84 Energy density, J/mm3 80 80 100 100 120 120 140 140 Hardness, HV1 616 354 414 436 563 428 270 379 Wear rate, mm3N-1m-1 x10-3 13.0 10.3 - 11.4 - - 13.7 - Table 3.
SLM parameters for printing Set 2 (WC fresh 1 µm; Co fresh 20-45 µm) of samples Sample number 1 2 3 4 5 6 7 8 9 10 11 12 Point distance, µm 10 10 10 10 10 10 40 40 40 40 40 40 Exposure time, μs 7 6 9 8 12 10 112 93 149 124 187 156 Power, W 60 72 60 72 60 72 60 72 60 72 60 72 Energy density, J/mm3 60 60 80 80 100 100 60 60 80 80 100 100 Hardness, HV1 901 989 906 1205 895 1107 810 836 1022 1029 1112 975 Wear rate, mm3N-1m-1 x10-3 - - - 3.1 - - 8.4 - - - 3.7 - Table 4.
SLM parameters for printing Set 3 (WC-Co recycled 0-20 µm; Co fresh 20-45 µm) of samples Sample number 1 2 3 4 5 6 7 8 9 10 11 12 Point distance, µm 10 10 10 10 10 10 10 10 10 10 10 10 Exposure time, μs 12 7 5 16 9 7 19 12 8 23 14 10 Power, W 36 60 84 36 60 84 36 60 84 36 60 84 Energy density, J/mm3 60 60 60 80 80 80 100 100 100 120 120 120 Hardness, HV1 758 662 804 603 555 676 1075 889 877 481 566 711 Wear rate, mm3N-1m-1 x10-3 - - - - - - 11.0 - - 12.1 - - Table 5.
Two passes of laser were performed Sample number 1 2 3 4 5 6 7 8 9 10 11 12 Point distance, µm 10 10 10 10 10 10 10 10 10 10 10 10 Exposure time, μs 17 14 12 20 16 14 23 19 16 26 21 17 Power, W 24 30 36 24 30 36 24 30 36 24 30 36 Energy density, J/mm3 58 60 62 69 69 72 79 81 82 89 90 87 Hardness for 4/1, HV1 708 669 626 900 774 445 446 629 768 369 804 618 Hardness for 4/2, HV1 384 454 669 555 462 578 460 603 448 564 587 685 Wear rate for 4/1, mm3N-1m-1 x10-3 - - - - - - - - 9.1 11.5 - - Wear rate for 4/2, mm3N-1m-1 x10-3 12.8 - - - - - - 11.8 - - - 11.1 Powder bed fusion process.

The increased number of elements having low solubility in aluminum alloys ensure the usage of the powder metallurgy methods [1-4].
However, powder metallurgy methods have a number of significant drawbacks in comparison with the versatility of foundry technologies, which allow to obtain billets and manufactured products with almost no limitations on weight, size, complexity of external configuration and internal cavities.
Gadolinium, belonging to the yttrium subgroup of lanthanides, has a number of specific properties that make it promising for use as an alloying element in the production of Al-alloys.
Quantitative metallographic analysis with the use of the ThixometPro imaging system [16,17] shows that the total number of inclusions in the Al -10 wt.% Gd alloy is 19.9 %, their average Fere-diameter is 3.02 µm, the percentage of eutectic is 49 %, and of solid solutions is 24.1 %.
Xiangfa, Grain refining potency of LaB6 on aluminum alloy, Journal of rare earths.

Ramie has a number of advantages that differentiate it from other stem fibers.
After the drilling process is carried out, the specimens are classified according to the variation in the number of layers, the diameter of the drill bits, the spindle speed, and the given feed rate.
The larger the diameter of the drill bits used in the composite with the same number of fiber layers will cause a decrease in the tensile stress on the ramie fiber woven composite.
This condition is evidenced by a number of researchers claiming that the strength of perforated composites tends to decrease with increasing digging hole size [17-18].
Brittle fracture is characterized by a bright and grained fracture surface, the propagation of the crack is perpendicular to the direction of the applied load, and no or little plastic deformation occurs in the material.

The samples were then numbered respectively in order to be applied to the physical and chemical artificial olfactory system experiment.
The required numbered bag was then taken out for each of the experiments, leaving others stored in 0 ℃. 3.2 Experimental methodology The chicken samples were dealt with physical and chemical experiments and measured by the electronic system.
The output mode of the neural network and the number of neurons in the hidden layer were determined by the specific performance requirements in this paper.
The number of iteration during the training was set to be 5000 times and error tolerances, 0.001 4.3 Optimization on sensor array There were 360 group data collected from 10 samples with 6 times, 30000 for each of the group.
Detection of fungal contamination of cereal grain samples by an electronic nose [J].

IBS consist of a mixture of BCP grains with different particle sizes, commonly smaller than granulates in order to obtain a rheologically suitable paste along with hydrosoluble polymer.
Therefore, inflammatory response, bone ingrowth, and BCP degradation were different according to the grain size.
Pore diameters must exhibit values of hundred microns in size [56,70,71] and a number of designed pore interconections to verify in the shortest possible time a bioresorption of the scaffold and the subsequent new bone formation (Table 1).
Other methods such as mechanochemical [107] or hydrothermal synthesis [108] allows to obtain Si substituted CaP with small grain sizes, high strains levels and, consequently more reactive.
Anyway, this substitution leads to BCPs with higher solubility, more crystalline strains, smaller grains sizes and higher number of triple junctions.

The red mold rice (Shan-Yi Fermentation Industry, Taichun, Taiwan) was inoculated into steamed long-grain waxy rice at the ratio of 1:1500.
One milliliter of soy sauce was diluted with 20 mL of deionized water and the solution was determined with a pH meter (PB-10, Sartonets Corp., Gottingen, Germany). 2.3 Brown color intensity The brown color intensity of soy sauce [5] was determined by measuring the absorbance at 555 nm with a spectrophotometer (SP-8301, Metertek, Taipei, Taiwan). 2.4 Total nitrogen content Total nitrogen (TN) was determined according to the Chinese National Standards method (series number 423-5006) with modifications [6].
The TN was determined by back-titrating the boric acid solution with 0.1N hydrochloric acid. 2.5 Formaldehyde nitrogen Formaldehyde nitrogen (FN) was determined according to the Chinese National Standards method (series number 423-5006) [6].
Aliquots of 25 mL diluted soy sauce were mixed with 20 mL 37% formaldehyde, and then titrated with 0.1 N NaOH to pH 8.5. 2.6 Ammonia nitrogen Ammonia nitrogen was determined according to the CNS (series number 423-5006) [6]. 2.7 Amino nitrogen Amino nitrogen (AN) was obtained by subtraction of ammonia nitrogen from FN according to the Chinese National Standards method (series number 423-5006) [6].

Thus, the number of significant eigenvalues of the time reversal operator is equal to the number of well resolved scatteres [5, 6].
Figure 1 (a) shows measured interelement firing signals from a #1 flat-bottomed hole (FBH), placed in a powder titanium specimen having a very fine grain size, without time delay using a 32 element linear array transducer (with 1 mm element spacing and 5 MHz center frequency).
However, we know that the number of significant eigenvalues should be three since that specimen contained the three flaws.
Based on the experimental results, we found that the D.O.R.T. method may be used to determine the number of flaws in the inspected area and also to give the proper time delay for focusing though inhomogeneous material.

In recent years, a considerable number of high-strength steel fracture casualties have occurred not only in the petrochemical industry or mechanical industry, but also in the civil engineering.
The detail sizes of sample and sample position is as Fig.1, the sample after processing as Fig.2, specimens after experiment as shown in Fig.3，grouping and numbering for specimens listed in Table. 2.
Table 2 CTOD value of Q460C steel with temperature Test grouping Amount of sample Temperature (°C) Numbering for sample CTOD value δm Measure value Mean value 1 3 20 FB-1 0.32406 0.3835 FB-2 0.41195 FB-3 0.41458 2 3 0 FB-4 0.42019 0.3893 FB-5 0.33587 FB-6 0.41188 3 3 -20 FB-7 0.46500 0.3929 FB-8 0.36394 FB-9 0.34989 4 3 -40 FB-10 0.27008 0.3177 FB-11 0.49135 FB-12 0.19170 5 3 -60 FB-13 0.04461 0.1296 FB-14 0.1543 FB-15 0.18997 Fig.12 Trend of CTOD value of Q460C steel responding to table 2 Q460C steel’s CTOD value decreased with the drop of temperature obviously, which can be observed in Fig.12.
It was also said that there was no obvious macro-plastic deformation, but large area in brittle fracture zones, the fracture relatively flush, and the direction perpendicular to the tensile load; (2)The fracture surface came on grain shape to some extent, having some light reflective irradiation, which indicated that the performances of fracture failure of Q460C steel at both temperature points (-40 ℃ and -60 ℃)belonging to brittle fracture.
Fig.20 Scanning electron micrographs of the fracture surface of TPB sample at 20 ℃ Fig.21 Scanning electron micrographs of the fracture surface of TPB sample at 0 ℃ Fig.22 Scanning electron micrographs of the fracture surface of TPB sample at -20 ℃ Fig.23 Scanning electron micrographs of the fracture surface of TPB sample at -40 ℃ Fig.24 Scanning electron micrographs of the fracture surface of TPB sample at -60 ℃ (1)Fig.20 showed that the fracture appearance of Q460C steel had a large number of dimples and tearing edges at 20℃{TTP}8451 .

This procedure not only generating tempera- ture field and structural dynamic analysis finite element model but also produce some relevant BDF files that for temperature field analysis, stress modal analysis, random vibration analysis.[5] User can set model’s grid number on random.
User can set any solving modal order numbers.
Each part of the grid number is divided into 25,10,11,12,4,11 respectively.
And the user can set the solving orders’ number.
[4] Zhibin Shen, Lei Li, Yongjun Lei, Guojin Tang, Analysis and design for star-shaped grain based on secondery development of Patran, Journal of Solide Rocket Technology, Vol. 32 No. 2 2009