Analogs properties

Mendeleev admitted that the basic idea of two elements having analogous properties was a difficult and relative one ... 

Figure Ij. These gels have gel memory (11). The protein gelatin shows analogous properties. 

The bioreductively-activated, hypoxia-selective DNA-damaging properties found in tirapazamine are not uniqne to this nitrogen heterocycle. Analogous properties have been observed for quinoxaline di-A-oxides snch as 99 and In addi-... 

In rabbits, the as yet unidentified maternal signal during lactation has analogous properties in guiding the reliable orientation of suckling, mainly via MOS input (Hudson and Distel, 1986 Schaal et al., unpubl.). Minor fractions may still function as flag contributors, exemplified by the attractiveness of proestrous elephant urine. Male responses show that intact urine is conspicuously more attractive in comparison with the pure insect mammal pheromone (9.) presented in water (Rasmussen et al., 1996). 

In addition to the coupled-signal method just described, phosphorylated carbon signals can be detected by use of praseodymium chloride, which displaces a- and /8-carbon resonances of a,/8-D-mannose 6-phosphate and a-D-mannosyl phosphate downfield, with little effect on other resonances. Europium chloride has analogous properties, except that the displacements are upfield. With certain polysaccharides, such as the O-phosphonomannan of Hansenula capsulata (29), the sig-... 

The enzymatic activity versus pH is thus generally a bell-shaped curve as in Fig. 6. An autocatalytic effect may appear when the reaction products have an acid-base effect (often the case). A simple example is the glucose oxidase reaction, shown in Fig. 7. Notably, the rate versus product (H+) curve indicates an autocatalytic effect on the alkaline branch, that is, for pH>pH (see Fig. 6). Systems presenting analogous properties have been studied by R. Caplan et al.27 and we also learn more about them from D. Thomas in this volume. 

The influence of the penetration by the hydrogen ion on the volatility of compounds can be appreciated in another way. As long as the H ion is on the periphery of the Cl" ion, the molecule will, in many respects, resemble that of NaCl, possessing analogous properties, but if the positive H+ ion could penetrate the molecule so that it... 

Bromide of Silver—Ag Br—is an insoluble yellowish substance, formed in the same manner as the Iodide, and baying analogous properties. 

Muetterties et al. (130) published an extensive survey relating the properties of metal clusters and their ligands to analogous properties of metal surfaces and adsorbed species. Moskovits (131) has expressed caution, particularly in relating the reactivities of cluster ligands and the surface equivalents and more recently,... 

Analogous properties are inherent in lithium tert- butyl peroxide used for epoxidation of electron-unsaturated olefins (86JCS(CC)1378, 88JCS(P1)2663). 

Some of the catalytic and structural properties of thioredoxin reductase as they relate to analogous properties of lipoamide dehydrogenase and glutathione reductase have been covered in Section II. The flavoprotein, thioredoxin reductase, catalyzes the electron transfer from NADPH to thioredoxin, a protein of 12,000 molecular weight containing a single disulfide. The reductase has a reactive disulfide in addition to FAD. Thus, electron flow is from NADPH to the PAD-disulfide system of thioredoxin reductase, to the disulfide of thioredoxin, and finally to a variety of acceptor systems. 

When a single excitation beam is used, photons of the same energy must be capable of inducing both excitation steps, and this places a restriction on the wavelengths at which this mechanism is effective (see Sect. 6). The expressions at Eq. (6a-c) are valid in the limit of low pump powers. Eor discussion of the analogous properties under high pump power conditions, see Sect. 5. 

Thus at a temperature below 0 but differing very slightly from 0 the saturated liquid and vapor are transformed one into the other without appreciable absorption or liberation of heat and without appreciable change of volume the various physical properties, optica, capillary, etc., of one of the two phases cannot be distinguished from the analogous properties of the other phase. 

This behaviour may be compared with that for the evaporation process where as we move along the line of coexistence of liquid and vapour both the change of volume on evaporation, and the latent heat of evaporation tend to zero. At the critical point the value of SpjST becomes indeterminate and the line of coexistence ends. It appears that there is no solid-liquid critical point with analogous properties. 

As early as 1924 the commission, which had adopted the neologism glucide with only a majority vote, decided unanimously to change the name lipoid to lipide —indicating fats and esters possessing analogous properties. 

The second derivative vector is a B-spline of two degrees lower, with the second differences of the original control points in the role of control vectors, and higher derivatives have analogous properties, as far as the degree of the B-spline permits. 

Another structural attribute that can be achieved in branched side chain PF oligomers are samples containing a single chiral enantiomer [88,89]. These samples are intrinsically chiral and thus are optically active and can produce circularly polarized emission. Chiral functionalized PFs exhibit analogous properties [62,63,90]. 

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