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The number of layers sandwich in ore body varies from one to four with grad of 0.4-0.5 g/t.
2.1～ 6.85 Ⅱ2-5/w line 46～south of line 52 620～550 164 75 1.92～1.55 irregular and thin vein NW 70～82 mainly altered rock followed by quartz vein rock type 2.36～3.36 Ⅱ2w line 60～north of line 38 600～375 383 230 5.58 irregular vein NW 70～82 mainly altered rock followed by quartz vein rock type 1.82 Ⅱ3-1/w north of line 50～south of line 58 570～240 175 150 2.25 irregular vein NW 70～82 mainly altered rock followed by quartz vein rock type - Ⅱ3-2/w north of line 48～south of line 58 520～220 230 280 2.52 irregular vein NW 70～82 mainly altered rock followed by quartz vein rock type 5.76 Ⅱ3-3/w north of line 46～south of line 56 560～220 210 150 1.71～2.75 irregular vein NW 70～82 mainly altered rock followed by quartz vein rock type 1.83～7.13 Ⅱ3-4/w north of line 52～58 line 375～210 104 150 1.0～2.38 more regular vein NW 70～82 mainly altered rock followed by quartz vein rock type 1.58～6.66 Table 1 Geological characteristics of ore body in No. 2 ore zone Table 2 Mining plan comparison table Number
Pyrite is mainly mineralized with the distribution of fine grain star bulk or sparsely disseminated, sometimes thin veins shape and film-like shape.
Due to lack of dry filling source for a large number of mines, this method is few applied in fact.
For a long time, the inability of the mine goaf treatment results in a large number of centralized goaf group which poses a security threat to the production.

However, the number of accidents considerably increased with the increasing number of their use.
This type of accident influences not only the ecological point, but also the financial point, given the number of cubic meters passing daily through these pipes.
While SIF solutions are reported in handbooks for many crack geometries and loading cases, T-stress solutions are available only for a small number of test specimens and simple loading cases for instance pure tension and bending.
As noted, several study remarks that the next term may not be negligible for length notches on the order of the grain size. 6.

The most notable one is that OTEC plant operations produce a large number of useful by-products such as potable water, food (aquaculture and agriculture), rare elements, and pharmaceuticals, many of which arise from the pathogen-free, nutrient-rich, cold deep water [1-3].
In response to this trend, an increasing number of papers on resource and economic assessments on OTEC electricity, the current status and research needs for OTEC technologies, and the simulation of the performance of OTEC systems have been published over the last few years (e.g., [4-7]).
Technologies Capital costb (US$2000/kW) Electricity generation efficiencyb (%, LHV basis) Coal-fired steam cycle 1,500–1,170 43.0–52.0 Coal IGCC 1,680–1,300 46.0–54.0 NGCC 630–530 57.0–63.0 Light-water nuclear reactor 2,350–2,100 34.0–37.0 Biomass-fired steam cycle using wood chips 1,880–1,460 24.9–34.0 using grain residues 2,120–1,660 24.9–34.0 using sugarcane residues (a uniform mixture of bagasse and trash) 1,880–1,460 22.1–30.2 using black liquor 4,420–3,440 12.4–13.0 using municipal wastes 1,630–1,270 22.7–31.0 Biomass IGCC using wood chips 2,390–1,530 37.6–45.0 using sugarcane residues (a uniform mixture of bagasse and trash) 2,780–1,780 32.4–37.9 using black liquor 2,010–1,280 25.4–28.7 a.
All cost numbers are based on North American manufacture and construction.
If the reference OTEC electricity generation costs could be reduced further by half, OTEC technologies would be deployed in a number of world Fig. 3.

The design choices involve a significant financial commitment and are based on a number of predictable productions, but with process parameters that are unknown in the design phase.
In particular, with the increase of deformation, the work hardening phenomenon comes off, due to the presence of dislocations that are obstacles to their sliding (that prevent sliding) and tend to gather around the impurities and the grain boundary.
Therefore, the introduction of the generalized shear variable ε, defined in the Equation (2), is required, where e is the punctual strain; similarly, the generalized strain rate ε, expressed in the Equation (3), is defined: ε2=23εij (2) ε2=23εij (3) Assuming homogeneous deformation in a torsion test of a cylindrical specimen,it is found that: ε2=13rθtL2 (4) ε2=13rθtL2 (5) where L is the working length of the specimen and θ its torsion rotation, so that: ε=2πNrL3 (6) ε=2πN'rL3 (7) where N is the number of rounds and N' (in rounds/sec) is the rotation speed imposed on the specimen.
The most satisfactory mesh, that is the number and the arrangement of the elements, was found by successive iterations and by analysing the results of multiple analyses, characterized by different meshes, with the attainment of the acceptable compromise in terms of the number of elements.

In first grinding and polishing tests a material removal of 7.2 µm/min was achieved by four grinding steps and 1.0 µm/min by polishing with a diamond grain size of 6 µm reducing the roughness from Sa 0.78 µm to 0.10 µm.
A textured area ratio of 5 % was applied leading to a number of microstructures up to 4,250 per specimen.
The microstructured area is located in the center and was varied from 10 mm x 12.5 mm to 10 mm x 25 mm resulting in a number of microstructures of 1736 and 4250, respectively.
For determination of the ablation threshold of the material the influence of fluence, pulse frequency, velocity of the scanner and number of loops was investigated for linear microstructures [20].
Fig. 10: Change of friction force compared to polished shims for different microstructure arrangements for a number of samples n = 3.

The linear shrinkage of the samples of series C sintered at different firing temperature 1400~1500℃ were given in Fig.1.The linear shrinkage of the fired samples was a native number which means the samples expanded after fired.
With the increase of the firing temperature, the contact area of the granularities extends, the interface of solid-fluid surface decrease, then the grain grows, the pores become isolated close pores and the densification of the samples increase [25].
Although the gridding consist of mullite phase can enhance the strength, the number is few.
This can be explained that, at the temperature of 1450℃, a large number of secondary mullite begin to form, and the formation of secondary mullite is relative to the particle size of raw material, the smaller of the size; the lower temperature needs to form.The increase of 700 mesh SiC enlarged the specific surface area which accelerated the break up velocity of andalusite to form secondary mullite [6-8].The formation of secondary mullite will consume the phase of cristobalite.
The research of SEM reveals that a number of closed pores, and a mount of unicom pores exit in the samples where the pores disperse uniformly, the diameter is about 10~20μm.

As the molten steel solidifies quickly, segregations take place only in the micro-range and the produced strip is characterized by a homogeneous and fine-grained microstructure [9].
To increase the groove width, a large number of rolling passes is necessary, which implies a great number of mill stands or more production time.
Critical points in TWS are the used materials, which need to be weldable by laser or electron beam, and the number of welding seams.
Compared to tailor welded coils and tailor cast strips, the production of TRS with wider grooves implies a high number of rolling passes.

Not only in Russia but all over the world there are no unified classification criteria of buildings by the number of floors, so in this paper, it is assumed that increased number of storeys building(multi-storey) is 6 floors plus.
These buildings have a greater degree of potential fire hazard for people in them, as compared with the buildings with a usual number of storeys - they have greatly hampered evacuation and increased complexity of fire management [4, 5].
The number of problems of the protection of people, buildings and the environment from fire impact are considered in [23].
The steam generated from this water pushes the mica plate, increasing the initial volume of grains 6-15 times or more [39, 40].

During the formation of the dispersion the pH was kept at 4.0, wherein the excess number of H+ ions would be attracted to the negatively charged carboxylate groups of glutenin and gliadin.
In addition, the number of hydrophobic interactions and hydrogen bonds increased so that the amount of gliadin obtained also increased.
The Fig. 2, shown that there are absorption bands at a certain wave number (cm-1).
Contract Number B/66.24/PL1.R7/PG.00.03/2022 References [1] Djenar N.S., Jayanti, R.D., Suryadi J. (2021).
Wimmer Monika A. et al, Drought stress during anthesis alters grain protein composition and improves bread quality in field-grown Iranian and German wheat genotypes, Appl.

In a large number of synthesis methods that have been used to obtain cobalt ferrite nanoparticles, co-precipitation is an economical and straightforward way to get superparamagnetic nanoparticles.
The average particle size can be computed from the TEM image as follows [13] (2) Where d is average diameter, di is the diameter of the ith particle, and N is the number of particles taken into account.
As the temperature is increased, the strength of the absorption band at 590 cm-1 becomes stronger, correlating with a more divalent cation number in B octahedral sublattice.
Acknowledgments This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 104.06-2017.42 References [1] Z.
Ultrafine Grained Nanostructured Mater., 50 (2017) 105–110 [3] I.