Mechanism of aggregation

The results of these experiments also confirm the conclusions made in the above paper dealing with the mechanism of aggregation. These conditions were based on the data obtained using the method of semiconductor sensors. However, the technique used in [42] was seemingly more sensitive, because it enabled observation of elementary surface processes, such as the appearance of centres of condensation of metal atoms on atomic scale. 

The term D is called the fractal index and represents the packing change with distance from the centre of the floe. Computer simulation and experiments allow the value of D to be related to the mechanism of aggregation. Typical values are for ... 

CD has been used extensively in studies of peptides related to Alzheimers disease, although studies of the amyloid plaques associated with the disease are precluded by their insolubility. 211 A peptide consisting of 39-43 residues is the principal component of amyloid deposits that are found in the brains of Alzheimers patients. This peptide, called A4, 3-peptide, or 3AP for (3-amyloid peptide, is derived by proteolytic cleavage of a protein called amyloid protein (APP). The mechanism of aggregation of (3AP is clearly of great interest. 

Monodispersed particles were prepared by in 562 situ photolysis of HAuCL4. The mechanism of aggregation was examined by laser flash photolysis... 

Harari, A. R., Benyakir, D. and Rosen, D. (1994). Mechanism of aggregation behavior in Maladera matrida Argaman (Coleoptera, Scarabaeidae). Journal of Chemical Ecology 20 361-371. 

Green, M. L. and Morant, S. V. 1981. Mechanism of aggregation of casein micelles in rennet-treated milk. J. Dairy Res. 48, 57-63. 

A mechanism of aggregation or flocculation in which long-chain polymers adsorb onto particle surfaces leaving loops and ends extending out into solution. If these loops and ends contact and adsorb onto another particle then a so-called bridge is formed. See also Aggregation. 

A mechanism of aggregation or flocculation in which particles are enmeshed by a coagulant matrix. The particles are aggregated not due to charge neutralization but rather to enmeshment. Example the rapid precipitation of a metal hydroxide from supersaturated solution where the settling fluffy hydroxide particles trap and enmesh other suspended particles. 

Figure 2. Hypothetical mechanisms of aggregation of fish actomyosin during frozen storage. (A) King, 69 (B) Connell, 61 (C) Matsumoto ( proposal in the present paper). AM, actomyosin M, myosin MD1 and MDt, denatured myosin A, actin.

Nevertheless, an understanding of the mechanism of aggregate formation may provide clues as to pathological mechanisms. 

It will be interesting to note whether similar optical behavior, i.e., the occurrence of an aggregate-induced band, can be detected in differently substituted PPEs and PAEs. The future will tell whether the bathochromic shift observed for dialkoxy-PPEs is likewise due to planarization or has a different origin, but a paper by Scherf shows that dialkoxy-PPEs Im display a moderate Cotton effect in poor solvents with a distinct negative maximum at 475 nm (g= 0.001). The similarity of dialkyl- and dialkoxy-substituted PPEs with respect to their CD spectra suggests, but does not prove, that a related mechanism of aggregate formation may be at work. 

O. A. Linnikov. Spontaneous crystalhzation of potassium chloride from aqueous and aqueous-ethanol solutions part 2 Mechanism of aggregation and coalescence of crystals. Cryst. Res. TechnoL, 39 529-539, 2004... 

This chapter considers the reasons for a variation of microgel structure characterised by its fractal dimension, D, formed in the cure of epoxy resin systems. Quantitatively, change of D during the increase of reaction time is well described within the framework of mechanism of aggregation cluster - cluster. The fractal space, in which the reaction curing proceeds, is formed by a structure of the greatest cluster in system. 

Many mechanisms of aggregation of amyloids have been studied and provide us with the insight into ways to control amyloid formation. Among the variety of protein amyloids, p-amyloids (i.e., Ap (1-40), Ap (1-42), Ap (1-43)) have been considered critical to understanding Alzheimer s disease [27]. The plaques in brain tissue with Alzheimer s disease are predominantly comprised of two Ap amyloids, Ap (1-40) and Ap (1-42). 

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