Normal and abnormal growth

All our modeling of the decomposition reactions is based obviously on a certain number of assumptions. Some of them are verifiable in experiments like the pseudosteady state, the separable reactance of growth, and choice between a one- or a two-process model. Others, on the contrary, are not verifiable in experiments directly and it is implicitly assumed that they are checked by the whole of the resrrlts. 

Among these last assrrrrrptions we posed an importarrt approxirrtation that consists of assuming the existence of two distinct processes nrrcleation arrd growth, which differ from each other by two gerreric characteristics  

If the first difference is acceptable, we, however, arbitrarily placed the appearance of this interface for a nrrclerrs with the size eqtral to n (see Chapter 8). 

The second difference, related to the independence of the molar Gibbs energy of the dimension of the small islands of B on the reactivity of growth, is also introduced aibitrarily for same size , but if we examine a curve of the type of Volmer (see section 8.4.2), it is only for dimensions quite larger than n that we would be likely to find the curve valid for large-sized islands of B. 

This approach is compatible with a one-process model with slow growth for which there is a relation between the time and the particle size, but it caimot be retained in two-process models with nucleation and growth during which, at a given time, all the grains do not have same size. 

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Bustin M, Catez F, Lim, JH (2005). The dynamics of HI function in chromatin.Mol.Celll7 617—620 Chan W-Y, Liu Q-R, Borjigin, J, Busch H, Rennert OM, Tease LA,and ChanPK(1989) Characterization of the cDNA encoding human nucleophosmin and smdies of its role in normal and abnormal growth. 

Generation R The Rotterdam Study into Growth, Development and Health Study will evaluate normal and abnormal growth and development and identify biologic, social, and environmental determinants (European Commission 2004). 

Vol. 34 Vectors as Tools for the Study of Normal and Abnormal Growth and Differentiation. 

Kun E, Romaschin AD, Blasdell RJ, Jackowski G (1981) ADP-ribosylation of nonhistone chromatin proteins in vivo and of actin in vitro and effects of normal and abnormal growth conditions and organ-specific hormonal influences. In Holzer H (ed) Proceedings of the international Titisee conference on metabolic interconversion of regulatory enzymes. Springer, Berlin Heidelberg New York, pp 280-293... 

Normal sexual activity is associated with ovulation in most female mammals. Compounds affecting this process can adversely affect female libido. Ovarian failure induced by xenobiotic compounds has been associated with a decrease in libido in women. Certain types of oral contraceptives as well as drugs of abuse (methadone, cannabis, alcohol) cause decreases in female libido. The treatment for hirsutism, excessive growth of hair in both normal and abnormal locations, is the compound cyproterone acetate. It is an antiandrogen that has the side effect of severely decreasing libido in women. 

FIGURE 16.30 Schematic of grain size distribution at various times for normal and abnormal grain growth. For abnormal grain growth a bimodal size distribution is produced from initially a monomodal size distribution. 

M. HiUert. On theory of normal and abnormal grain growth. Acta Metallurgica, 13 227,1965... 

Helnmets, F. "Analysis of Normal and Abnormal Cell Growth" Plenum Press New York, 1966. 

Microfabrication technology has provided a plethora of tools and methods to engineer the position and microenvironment of cells in vitro. The unprecedented level of control over the mechanical, chemical, and electrical nature of the cellular microenvironment allows investigation of questions not addressable with conventional tools and methods. The unique insight into normal and abnormal cell behavior afforded by microfabricated tools and methods may one day lead to cures for injuries and diseases, and the ability to direct cell growth and behavior for tissue engineering or industrial applications. 

Koo, J. B. and Yoon, D. Y., The dependence of normal and abnormal grain growth in silver on annealing temperature and atmosphere, MetalL Mater. Trans. A, 32A, 469-75, 2001. 

Hillert M., On the Theory of Normal and Abnormal Grain Growth (Acta Metallui ica) 1965, 13 227-238. 

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