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Report of HEACON (1998) collected 247 samples in the area 2 x 2 km and 49 core samples (with depth of 0.6 m), the results indicated that the stratum in Bassac River and Dinh An Estuary is dominant mud and the grain size less than 0.063 mm with more than 80% [2-5].
Acknowledgements The work was financially supported by Vietnam International Education Development - Ministry of Education and Training (Project number 322), the Special Research Fund of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (2009585812), the Fundamental Research Funds for the Central Universities (Hohai University 2012B06514), and the 111 project (B12032).

The grain size of the sample was about 40 µm.
Foils for permeation experiments were mechanically polished with emery papers up to #200 with increasing number of mesh, and cleaned in ethanol.

Table 1: Space Groups, Atomic positions (Wyckoff positions), number of formula unit per unit cell (Z) in MgZn2 and MgCu2 type of structures.
The measurement has been performed at 30 oC after activation at 150 o C (vacuum before measurement) to obtain activated grains.

.                (4) where n = number of time interval iterations (t); k = thermal conductivity of solid state if the nodal temperature is below the fusion temperature; k = effective thermal conductivity (keff) if the nodal temperature is above the fusion temperature.
At high scanning speed during LSR of 304 AISI samples, which is the case of the present work, Akgun and Inal [16] reported in their work that because dendritic growth follows substrate grain direction, dendrites can reach the surface with no or minimum disruption by their neighbors, thus resulting in a more uniformly oriented structure.

Glass-ceramics are fine-grained polycrystalline materials formed through the nucleation and controlled crystallization of a glass of a suitable composition [1].
This behavior can be explained analyzing Eq. 3, that shows the relationship between the Tp from the DTA and N, the number of nuclei per volume unit in a glass [11]: ln N = mEa/RTp + cte (3) where m is the dimensionality of the crystal growth.

In both flight experiments the first development of morphological instabilities was observed at grain boundaries also existing during planar growth.
In this case a specific number of cells was overgrown and degenerated so that the distance between the remaining cells increased.

The surface roughness influences the compactness, which is determined by the roughness of the surface, the surface grains were arranged more densely with decrease of roughness, by which the hardness of the films was enhanced.
In the spectra, six absorption bands were observed corresponding to wave numbers 612, 804, 1022, 1102, 1260, 1408 cm-1.

This phenomenon make the region near wellhole over acidification,limestone cave begin to take shape at the same time,most cementing material among sand grain was dissolved,if things go worse,it even may lead to formation sand flow.Although we resolve the problem of reaction speed,we also need to face another problem that these acids can not react with organic matter and even react with inorganic solid phase there is much limitations.So we need develop a certain special acid,which can achieve the purpose of comprehensive down.
(Project Numbers: 51174040) References [1] Zhengguo Wei, Changhui Bi, Lan Yu, Xiaoju Zhang, Zhenhua Zhang and Yong Yang: Study and application of comprehensive broken down technology with solid acid in Henan heavy oilfield[J],2005 (02)

According to 160/68A standard model, we designed 55cm long grain line skirt pattern, skirt size was given in Table 2.
Bottom contour S [Pixel] This parameter is mainly acquired by extracting pixel values of the bottom Wave number n [entries] Average peck radius [cm] Average trough radius [cm] Average peck angle [cm] Average trough angle [cm] Standard deviation of peck radius [cm] Standard deviation of trough radius [cm] Standard deviation of peck angle [degree] Standard deviation of trough angle [degree] Comparison parameter data of simulated skirts and real made skirts Table 4 a b c d e f Fig. 2 Comparison of simulated chiffon skirts and real made chiffon skirts.

Powders surfaces and densities allow to calculate an average grain size of approximatively 60 nm.
The band at 1384 cm-1 corresponds to the nitrate vibration (residue of synthesis process). 28 29 30 31 32 33 34 2 théta scale HAP C/P=1/8 C/P=1/4 C/P=1/2 C/P=1 C/P=2 -2 0 2 4 6 8 0 0,5 1 1,5 2 2,5 400°C 600°C 800°C 1000°C Wt%CO3 C/P molar ratio of initial reagents 1300 1400 1500 1600 1700 200°C air f or 8h 950°C CO2 for 2h 1000°C CO2 f or 2h wawve number (cm-1) Figure 1 Figure 2 Figure 3 Sintering The heat-treatment of carbonated apatites in air (or inert gas) above 600°C leads to the departure of carbonate species as it is shown on figure 3.