Growth crystalline

Hebard A F, Zhou O, Zhong Q, Fleming R M and Fladdon R C 1995 Cgq films on surface-treated silicon recipes for amorphous and crystalline growth Thin Soiid Fiims 257 147-53... 

Scale Inhibitors. When scaling conditions exist, scale inhibitors can be used to control the scaling tendencies, and keep metal surfaces free of scale deposits. Scale inhibitors are chemicals that interrupt and deform the normal crystalline growth pattern of carbonate scales. The three most commonly used classes of scale-inhibiting chemicals used in drilling fluid are [191,197] ... 

The chemical treatment is permanent. Its unique, crystalline growth will not deteriorate under a wide range of conditions. The treated concrete block is structurally strong, and is not affected by a wide range of aggressive chemicals including acids, solvents, chlorides, and caustic materials in the pH range of 3-11. 

Bernhardt The Isolation of a Crystalline Growth Factor for a Strain of Lactobacillus Bifidus. Arch. Biochem. Biophysics 48, 225 (1954). 

The structure of these spherites is uncertain Bradford assumes that they consist of a regular crystalline growth formed by multiple twinning of minute crystals. Scherrer s examination of gold sols, however, has revealed the fact that the crystal interference lines are well developed when the particle contains as few as eighty molecules arranged in the cube lattice, a spherite of OTju. diameter would probably show crystalline properties even if excessive twinning has taken place. 

EPITAXY. An oriented crystalline growth between two crystalline solid surfaces of different chemical composition, in which the surface of one crystal provides, through its lattice structure, preferred positions lor the deposition of the second crystal. This behavior is characteristic of some types of high polymers. 

This term refers to the crystalline growth of a variety of insoluble salts or metal oxides, which are usually deposited as a hard adherent layer, or layers, on heat-transfer surfaces. This is extremely undesirable because all crystalline scales reduce the rate of heat transfer and therefore seriously reduce the efficiency of the overall cooling system. 

Table 1.3 Maximum Crystalline Growth Rate and Maximum Degree of Crystallinity for Various Thermoplastics...

A decrease in thermal diffusivity, with increasing temperature, is also observed in semicrystalline thermoplastics. These materials show a minimum at the melting temperature as demonstrated in Fig. 2.18 [24] for a selected number of semi-crystalline thermoplastics. It has also been observed that the thermal diffusivity increases with increasing degree of crystallinity and that it depends on the rate of crystalline growth, hence, on the cooling speed. 

Effects of six commercial petrodiesel CFI additives on SME and its blends with No. 1 and No. 2 petrodiesel were studied previously (Dunn and Bagby, 1996 Dunn et al., 1996). Results from these studies are summarized in Table 1.6. These petrodiesel CFI additives decreased PP by up to 18-20°C for B30 blends in No. 1 petrodiesel and B20 blends in No. 2 petrodiesel. Similarly, these additives decreased PP of neat SME ( B100 ) by as much as 6°C. When applied to unblended petrodiesel ( BO ), these additives reduced PP by 7°C for No. 1 petrodiesel and by 23°C for No. 2 petrodiesel (Dunn et al., 1996). These results suggested that mechanisms associated with crystalline growth and agglomeration in neat biodiesel were similar to those for petrodiesel (Dunn and Bagby, 1996 Dunn et al., 1996). 

One area that has not been extensively explored with computations, however, is the nucleation, or kinetics, of crystalline growth. The process of growing crystals is typically the rate limiting step in our studies in crystal engineering. 

In contrast, the unsubstituted oligomer para-hexaphenyl is a highly crystalline material.6 In the crystalline state, the oligomer chains are arranged in layers forming a herringbone-type structure as shown in Fig. 8.2, characterized by a unit cell a = 8.091 °A,b = 5.568 X,c = 26.241 X, and ft = 98.17°. Two types of preferred crystalline growths are observed.7 One of them is oriented with the (00/) and the other with the (22-3) plane parallel to the surface of the substrate. 

The cooling of polymer melt in the presence of a foreign surface which can nucleate crystalline growth inhibits the lateral growth of spherulites. Crystallization occurs This is called transcrystallinity. It can im-... 

B(y, n) symbolizes a parametric value proportional to the number of n-peaks for the crystalline growth, and a is a spatial constant parameter (the center of the growth along y). 

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