Search results

Table 1 3# test drilling geological record table Drilling Depth phenomenon description 0~1.0m gravel (the gravel when filling the pavement) 1.0~2.2m loose strong weathering basalt 2.2~3.8m Drills-down phenomenon, lava hole(cavity) 3.8~4.6m broken, loose strong weathering basalt 4.6~7.2m broken, big pore ratio basalt 7.2~8.8m very broken basalt 8.8~10m complete, Close-grained basalt (2) Small cavity concentrate area: To present the obviously strong amplitude reflection area in the radar profile, but the abnormal reflected wave is mixed and disorderly, arc reflection wave area is smaller, disorderly reflection wave is more and it can't be more present continuously, abnormal reflection wave frequency is higher
Project Serial Number: 2011318346770 References: [1] D.F.

Similarly, the grain sizes, calculated by Scherrer’s formula: 26 nm, 24 nm and 22 nm for sample A, B and C, respectively.
A number of reports can be seen in the literature demonstrating the UV emission from ZnO [8-12].

However at 450°C, the number of crystallite particles started to decrease and it become less densely packed.
The variation of transmittance due to the optical scattering by surface morphology and grain boundaries of FTO in this study [11]. 400°C 400°C 300°C 350°C 450°C Figure 2 Variation of transmittance with wavelength for spray deposited FTO thin films at different deposition temperature.

This indicates the manifestation of the collective properties of hydrogen atmosphere in metals and is reflected in a number of non-linear effects, in particular in the dependence of the output rate, diffusion coefficients, the dependence of the hydrogen atoms energy on the density and energy of the exciting electron beam.
High concentrations of hydrogen result in the formation of the metal hydrides alter the grain boundaries, the porosity of the material and influence the hydrogen diffusion [13].

The carbide stuff of the adopted twist drill is YG6X and YL10.2 whose grain size is less than 1.0 mµ and 0.8 mµ respectively.
Figures show that the number of chip folding in common drilling is much more than that in vibration drilling, that is, the deformation degree of chips is larger in common drilling.

This reflects the fundamental characteristic of RFW, where the temperature is sufficient to disrupt grain bonds and cause phase transformation at the contact surface but remains below the melting point of the alloy [7].
Acknowledgement This research is funded by Vietnam National University HoChiMinh City (VNU-HCM) under grant number: C2025-20-10.

There are number methods for the HAP coating on titanium alloy and among them thermal spray is the most widely applied method for this coating process.
Relativelly smaller and more irregular HAP grains can be achieved for HAP+CNT coated layer as compared with HAP coated layer.

The relatively huge crystal grains of the kaolinite, which have pseudomorph of feldspar and mica, can be seen under the micropolariscope.
Fatty acid sodium was prepared by mixing oleic acid (analytically pure) and NaOH, whose molecules number is equal to oleic acid, and then stir several hours at heating condition.

So far a number of sensors have been developed using SnO2[3,4] to detect VOC vapours and WO3 [6] and In doped SnO2[7] for NO2..
SnO2 nanostructure based sensors have been reported to show good sensitivity properties such as low detection limit, good selectivity, and short response and recovery time .The modification of structure and grain size or introducing an impurity level and surface defects in tin oxide through doping is an effective way to improve its gas sensing properties.

The refinement procedure minimizes, by the least squares or maximum likelihood methods the function: M = iwi yobsi-ycalci2 Where wi =1σi is the weighting assigned to the observable yobsi (number of shots observed at step i) and σi is the standard deviation.
Structural analysis using RIETVELD method To determine the lattice parameters, the structure and the mean grains size of the powders, commercial HAP and b-TCP were used as standards.