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Lumber compression strength is the maximum pressure loads along the wood grain, Lumber bending strength means lumber bears the gradually exert bending load the ceiling capacity.
The number of two log samplings is 27 separately, and the same species log samplings are not from the same tree.
In the physical and mechanical properties aspects, the compressive strength parallel the grain is the maximum, the direction of cross the grain is the minimum, and the diagonal is in the medium [2].
Wood compression strength is the maximum pressure loads along the wood grain, which is one of the important mechanical properties as the structure and building materials.
The allowable stress can be obtained from the compressive strength along the grain, which is the very important index for selecting some compression members such as pit prop, support, pile and so on.

According to these technical demands, the damascene copper interconnects process became an important issue in the IC chips industry since it allows to decrease RC (resistance and capacitance) delay losses, reduces the number of processing operations and increases the lifetime of the interconnect lines [1].
After electropolishing, the top surface area of the trench was analyzed using the orientation imaging microscope (OIM) mounted on a Philips XL30 FEG-SEM to identify the orientation of grains.
The CSL grain boundaries were identified from the EBSD pattern.
To analyze GBCD changes after annealing, the fractions of different types of grain boundaries on the top area of the Cu interconnect were measured by EBSD technique, as shown in Fig. 5.
Therefore, it is most probable that grains having <112> direction, which is on the {111} plane, and is at the smallest angle with the <100> direction, will grow favorably.

The spectra broadened compared with that of the corresponding bulk powder sample, which proved fine-grained and incomplete crystalline existed in the film.
Because of the random distribution of the fine-grained particles, the morphology was not uniform.
And with more large grained particles forming, the roughness increased compare with the films deposited under the 0.8 Pa.
This would induce large number of defects and inhomogeneous particles, which would coalesce and grow up, leading to a coarse surface.
The poor crystallization, inhomogeneous grain size with more defects led to the grain boundary scattering which reduced the carrier mobility [14].

However, ferrite grains with a microhardness below 160 HV were observed.
In analyzing the results of metallographic studies and mechanical tests in combination with data on workpiece machinability by cutting workpieces, it is possible to assert with a high degree of reliability that the informative criteria responsible for the machinability of steel workpieces on metal-cutting equipment are hardness, microstructure, degree of banding, inventory of non-pearlite transformation products and carbides, state (clarity) of grain boundaries and microhardness of structural components.
Satisfactory machinability by cutting with an edge tool on automatic lines is observed when the hardness of steel forgings is from 156 to 197 HB with the presence of a clearly expressed ferrite-pearlite structure with a weak manifestation of banding or in its complete absence and with the actual grain size within 6-10 points has been established (Fig.1, Table 1).
Table 1 – Microstructure of steel 18HGR after isothermal annealing of forgings Part name Grain number Banding Ratio, F : P Hardness, HB Microstructure gear 7-9 1 50 : 50 163 Ferrite + pearlite (Ps + Plam) gear 6-9 2 50 : 50 170 Ferrite + pearlite (Ps + Plam) gear 7-9 1 50 : 50 170 Ferrite + pearlite (Ps + Plam) shaft 6-9 1 50 : 50 183 Ferrite + pearlite (Ps + Plam) gear 7-9 1 65 : 35 163 Ferrite + pearlite (Ps + Plam) gear 7-10 2 50 : 50 166 Ferrite + pearlite (Ps + Plam) shaft 6-10 0 50 : 50 197 Ferrite + pearlite (Ps + Plam) gear 7-10 2 65 : 35 156 Ferrite + pearlite (Ps + Plam) shaft - gear 7-8 1 65 : 35 167 Ferrite + pearlite (Ps + Plam) gear 7-8 0.5 60 : 40 156-163 Ferrite + pearlite (Ps + Plam) gear 8-9 0 60 : 40 159 Ferrite + pearlite (Ps + Plam) gear 7-9 1 55 : 45 159 Ferrite + pearlite (Ps + Plam) Note: Ps – sorbitic pearlite; Plam – lamellar pearlite.
Studies of semi-finished products, for which there were comments during processing at turning and milling operations, as well as during gear-tooth shaping, showed that had a negative impact on the cutting processes was pronounced banding of the ferrite-pearlite structure, the presence of individual grains of martensite and bainite, the presence of carbides and "blur" grain boundaries between ferrite and pearlite (Fig. 2).

For a number of years TSL techniques have been used with some success in this application.
This depends on the sensitivity of the quartz grains.
The sensitivity of quartz grains varies a lot from place to place.
Single grain dating was suggested to solve the problem by picking the most bleached grains from the sample.
Mayya et al. [55] proposed ‘hotspot’ model to quantify the spread solely due to the number and positional fluctuations of feldspar grains (source of beta dose) in the matrix.

This paper will focus his study on kaolins.Basically, the greater problems than Cuban kaolins confront are the iron oxide content and the grain size distribution between others.
Figure 3 X-Ray diffraction for mineralogical study of the Dumañuecos kaolin EL COBRE This deposit is formed by five bodies but only the number one is study.
II.2 Grain Size Distribution MOGI DAS CRUZES.
Figure 5 Malvern Grain Size Distribution of the Cuban kaolins by means of laser diffraction.
"Sec" and numbers are referring to the temperature in that moment.

Heavily cold worked samples were soften rapidly and reached to the grain growth region at shorter annealing times.
As shown in Fig. 1, hardness was sharply dropped at the early stages of isothermal annealing (recrystallization region) and then reached to a steady state value (grain growth region).
Heavy deformation caused the material to be soften rapidly and leaded shorter time period to reach grain growth region.
When a metal is heavily cold worked, strain energy is stored in the form of dislocations and other imperfections such as point defects, which increase the number of sites for activation of nucleus in the substructure [9-11].
Increase of cold working accelerated the softening of the material and reduced the annealing time to reach grain growth region. 3.Recrystalization activation energy is calculated as 89,5 kJ/mol for 55 % cold working, 88,3 kJ/mol for 70 % cold working and 78,6 kJ/mol for 85 % cold working.

The general grain slope was determined over as large a distance as possible in the board and the local grain slope was measured in the area of the beam where the slope was greatest.
In a beam with defects, failure begins with the opening of a fissure due to tensile stress perpendicular to the grain in the neighborhood of a knot or some other discontinuity that forces the grain to deviate and leads to locally steep grain slope.
The length of the fissure increases with load, leading to the rupture of the cell wall and the piece finally splits owing to tension perpendicular to the grain [16].
In high quality specimens, with few defects, failure begins with compression stress parallel to the grain.
The homogeneity of the ring width in the cross-section of the beam did not exhibit significant correlation with mechanical properties due to a reduced number of outliers but the analysis of the plotted pairs, not included in this work, suggests that a positive correlation can be detected between ring width variation and MOE, and less clear with MOR.

Co-Ni-Fe nano-coatings obtained from the electrolyte of low pH showed the fine-grain morphology.
It is evidenced by the number of peaks in the sample prepared at pH 7 was slightly lower compared to the samples electrodeposited at other pH values.
This result was evidenced by less numbers of XRD peaks found in Co-Ni-Fe phase prepared at pH 7, as shown in Fig. 1.
The particle size reduction resulted in the high volume fraction of the boundary atoms inside the grain boundaries.
The existences of these grain boundaries also prevent the dislocation motion.

However, the mechanism of physical method for scale prevention is extremely complex, affected by a large number of factors, so the efficacy was poor in practical application.
And under the worst situation, crystalline grain size and interplanar spacing of calcite decreased while those of aragonite increased, meanwhile, aragonite content decreased and calcite content increased.
Grain Size and Scale-inhibition Rate.
While under the poorest conditions, grain size of calcite decreased but grain size of aragonite increased.
Under optimum scale-inhibition conditions, grain size of both aragonite and calcite decreased, while under the poorest conditions grain size of calcite decreased while that of aragonite increased.