Restricted groups

In a discussion of these results, Bertrand et al. [596,1258] point out that S—T behaviour is not a specific feature of any restricted group of hydrates and is not determined by the nature of the residual phase, since it occurs in dehydrations which yield products that are amorphous or crystalline and anhydrous or lower hydrates. Reactions may be controlled by interface or diffusion processes. The magnitudes of S—T effects observed in different systems are not markedly different, which indicates that the controlling factor is relatively insensitive to the chemical properties of the reactant. From these observations, it is concluded that S—T behaviour is determined by heat and gas diffusion at the microdomain level, the highly localized departures from equilibrium are not, however, readily investigated experimentally. 

The examples cited serve to emphasize that the process known as vulcanization should be regarded generally as a structural change and not merely as the result of chemical action induced by a restricted group of chemical substances. 

Restricted group rotations caused by either short interatomic contact or strong interactions... 

The description of the two-state system,/= 2, was introduced earlier in Sections 7.1 and 7.2. Here, we present some quite obvious results for systems with nn direct interactions only. Since we discuss only a restricted group of events, we use a simpler notation for the correlations. Thus, instead of g(sj = a,S2 = P), we simply use g 2) or gi2(2) to denote pair correlations (between the event site i occupied and site i + 1 occupied ). Also, we shall always refer to the X. 0 limit as the correlation and omit specific notation for this limit. 

For a contact with E2g phonon modes in Fig. 7(a) the nonlinearity of the I — V curves due to electron-phonon interaction can be estimated from the dV/dl curves by about 10%. This is comparable with the nonlinearity observed for non-SC diborides [33] with small electron-phonon coupling constant A pc < 0.1. The reason for the relatively low nonlinearity of the I — V curves and the small intensity of the main E2g phonon modes in the spectra for MgE>2 contacts can be due to the fact that an anomalous strong interaction is characteristic for a restricted group of phonons with sufficiently small wave vector [9], whereas in PCS, the large angle scattering is increased. 

Vosshall L. B. and Young M. W. (1995) Circadian rhythms in Drosophila can be driven by period expression in a restricted group of central brain cells. Neuron 15, 345-360. WarrC. G., Clyne P. J., de BruyneM., Kim J., Carlson J. R. (2001) Olfaction in Drosophila coding, genetics and e-genetics. Chem. Senses 26, 201-206. 

Nowadays, there is a wide variety of hydride reagents but this section will concern itself mostly with those derived from boron, aluminum, tin and silicon. Even within this restricted group there is a wide... 

Very Specific Generally catalyze reaction for a very restricted group of molecules, sometimes for a single naturally occurring molecule of a single chirality. 

The work of Martin and Yallop was met with criticism. Thus Price [26] concluded that OB cannot determine the heat of explosion or detonation and the rate of detonation cannot be a linear function of OB. Roth [27] pointed out that the correlation between Martin and Yallop s corrected OB is successful only for a restricted group of similar explosives. The correlation breaks down for... 

It should not be concluded, however, that this and the other empirical relationships have no use. Indeed, individual secant relationships derived for restricted groups of compounds fit the experimental data with little scatter, suggesting that useful structural information can be gained, so long as the relationship appropriate to a particular type of compound is used. 

A similar plot for a restricted group of orthophosphates (Turner et al. 1986a) also gives a straight line, but with a different equation, indicating that these relationships are specific to related groups of compounds, and cannot be applied generally ... 

A better correlation has been demonstrated for the same restricted group of phosphates between the CSA and the distortion index (DI) describing the mean deviation of the PO4 bond angles from ideal tetrahedral symmetry ... 

Enzymes constitute a very important class of globular proteins. They catalyze particular reactions in the cell, such as the synthesis and breakdown of proteins, the transport of substances across cell walls, and the recognition and resistance of foreign bodies. Enzymes act by lowering the activation barrier for a reaction, and they must be selective so as to act only on a restricted group of substrates. 

Fig. 10. CBi expression in emetic centers. CB, is prominently expressed in the ferret area postrema (AP, dorsal vagal complex (DMNX, and associated regions involved in emesis as detected with a C-terminal CB, receptor antibody. Particularly strong immunostaining is present in a restricted group of cells in the area postrema as well as diffusely through the dorsal motor nucleus of the vagus (notice the lack of staining of cell bodies in DMNX), and the medial nucleus of the solitary tract (SolM. fourth ventricle CC, central canal. Scale bar = 100 pm. (Original photomicrograph provided by Marja Van Sickle and Keith Sharkey)...

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