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Over last years, nanosized grain materials have gain increasing interests arising partially from the absence of extended defects in these particles.
PZO is a linear Zr-O-Zr chain coordination polymer, with a molecular weight of 1000-2000, and the coordination number of Zr is 8 (15). 1HNMR (CD3OD, 400MHz and d ppm): 3.6 (w, 2H, -CH2-, keto form), 3.1(s, 1H, =CH-), 2.1(m, 3H, CH3CO keto form), 1.3(s, 3H, CH3CO enol form); FTIR (n, cm-1): 3415, 1590, 1530, 1483, 1368, 1280, 1027, 932, 652, 543 and 428. 1.2 Synthesis of preceramic polymer - PZS PZS was prepared by the reaction of polyzirconoxane (PZO) and salicyl alcohol.

It was found that the CdSe nanoparticles contained some defects or dislocations, which might be caused by the stacking faults at the surfaces and the grain boundaries during the CdSe nanoparticles formation.
The formation of small CdSe clusters with certain "magic" agglomeration numbers [11] might have the reason that particle growth proceeds via coalescence, i.e., two small clusters fuse to a larger one.

In our precedent works[12,13] Pt thin films have been deposited by the same technique; there are clearly shown the nanostructured nature of these films and the moundlike structure of their surfaces, due to the Pt grains.
This quantization is estimated by the parameter N ≈ (3n/π) 1/3 d, which is the number of subbands occupied by the electron gas.

It is expected that the presence of a large number of UNCD crystallites in the films sharpens the sp3 peak because the wave function around the Fermi level in crystallites must be uniform rather than that in the amorphous structure.
We believe that the grain boundaries terminated by hydrogen atoms are responsible for the large sp 3-CH peak [14, 15].

PLA can not only be synthesized from petroleum, but also be made from plant resources, such as corn, wheat, grain, beet, etc.
In this method, PLA fiber will be rapidly decomposed through the existence of a large number of bacterium.

Introduction With the development of cities’ construction, in the pile foundations of construction, there is an increasing number of using the technology of underground works such as cast-in place pile, diaphragm wall, and slurry shield.
Different geological structures and different mud systems have different viscosity, density, solid concentration as well as grain fineness distribution.

The microstructures of these alloys are characterised by a number of features, including the identity and volume of intermetallic, the amount of solute in solution and the eutectic morphology.
From microstructural investigations into the eutectic, it is apparent that the intermetallic phase in the MgLa alloys is more or less continuous along the grain boundaries and the lamellar structure is consequently more or less surrounded by the intermetallic.

The soil-water characteristic curve is calculated based on Grain Size advanced by Arga.L.M and J.F.Paris [9] , as in Fig. 1; Because the penetration coefficient of the unsaturated soil varies with the water content, the penetration coefficient is also the function related to the suction of the soil.
The unit divided is 788, and the joint number is 847.

Their evaluation can facilitate the resolution of a number of key engineering problems, such as stress relief cracking.
Each reflection is produced from a different family of grains, which are oriented such that a specific hkl plane diffracts to the detector.

Introduction Oil sands is a complex mixture containing sand grains (80 ~ 85%), bitumen (3 ~ 20%), water (3 ~ 5%) and small amount of clay materials (~ 3%), which has been considered as an alternative energy source of conventional petroleum.
Effects of Single Organic Solvents The results (Fig. 2) demonstrated that the bitumen recovery increased with the increase of the number of carbon (from 63.8% to 72.3%).