Selected results

The technique presented above has been extensively evaluated experimentally using ultrasonic data acquired from a test block made of cast stainless steel with cotirse material structure. Here we briefly present selected results obtained using two pressure wave transducers, with refraction angles of 45° and 0°. The -lOdB frequency ranges of the transducers were 1.4-2.8 MHz and 0.7-1.4 MHz, respectively. The ultrasonic response signals were sampled at a rate of 40 MHz, with a resolution of 8 bits, prior to computer processing. 

This justifies the use of the simpler language over the one. The solution of the Poisson equation and the boundary conditions used are explained in detail elsewhere [55]. Here, we will present some selected results. 

Integrated Systems. Until recently, each of the numerous databases and sources of information available to chemists and technologists had to be searched iadividually, and selected results either ptinted for file storage or downloaded to an ia-house or private computer system for easy future access. 

Note that H is simply Henry s constant corrected for units. When the solute gas is readily soluble in the liquid solvent, Henry s law constant (H or H ) is small and Kj approximately equals k, and the absorption process is controlled by the gas film resistance. For systems where the solute is relatively insoluble in the liquid, H is large and K( approximately equals k, and the absorption rate is controlled by the liquid phase resistance. In most systems, the solute has a high solubility in the solvent selected, resulting in the system being gas film resistance controlled. 

Any combination of first-order reactions can be simulated by extension of this procedure. Reversible reactions add only the feature that reacted species can be regenerated from their products. Second-order reactions introduce a new factor, for now two molecules must each be independently selected in order that reaction occur in the real situation the two molecules are in independent motion, and their collision must take place to cause reaction. We load the appropriate numbers of molecules into each of two grids. Now randomly select from the first grid, and then, separately, randomly select from the second grid. If in both selections a molecule exists at the respective selected sites, then reaction occurs and both are crossed out if only one of the two selections results in selection of a molecule, no reaction occurs. (Of course, if pseudo-first-order conditions apply, a second-order reaction can be handled just as is a first-order reaction.)... 

Solvents and pH may have a marked effect on stereochemistry as was illustrated in Chapter 1, and the generality given there is useful, A further example of the stereochemical influence that may be exerted by proper choice of catalyst and solvent is shown in the hydrogenation of a complex enamine, By proper choice of conditions high yields of either the cis or trans product could be obtained. Selected results are shown below (52) (data used with permission). 

Table 5.2-2 Selected results from Ni-catalyzed propene dimerization in chloroaluminate ionic...

We presented selected results from a new tight-binding total energy method that accurately predicts ground state properties of transition and noble metals, and successfully extended to transition metal carbides. 

Kenakin, T. P., and Beek, D. (1980). Is prenalterol (H 133/80) really a selective beta-1 adrenoceptor agonist Tissue selectivity resulting selective beta-1 adrenoceptor agonist Tissue selectivity resulting from difference in stimulus-response relationships. J. Pharmacol. Exp. Ther. 213 406—413. 

Through the use of a tin(iv) enolate with benzaldehyde it was possible to generate the anti A diastereomer 47 with high selectivity (Entry 5). With tin(n) etiolates a highly substituent-dependent outcome was observed. Low selectivities resulted with para-substituted aromatic aldehydes, but good selectivities were observed for ortho-substituted aromatic aldehydes (Entries 7-9). Simultaneous re-... 

The partial pressures of 0, C>2, Pu, PuO, and Pu02 were calculated as functions of T (1500 T 4000 K) and x (0.005 x 0.30), with particular emphasis on 0.005 x 0.10. Preliminary calculations at 5000 K yielded unreasonably high oxygen pressures and vapor densities such that an upper temperature limit of 4000 K was selected. Tables presenting selected results are given In ANL-CEN-RSD-82-1 (21). 

In this case, every member of the ensemble is identical, and we can be sure that any selection results in the same microstate, (b) Because each of the four molecules can take two orientations, the total number of ways of arranging them is... 

While in Fig. 16 selected results are plotted against the average energy density e = P/V9, in Fig. 17 all of the essential results for stirred tanks and bubble... 

Table 1 Selected result of the epoxidation using iron trichloride hexahydrate, pyridine-2,6-dicarboxylic acid, and an organic amine...

Figure 5.14 Pulse sequence for selective indirecty-spectroscopy. The three proton pulses at the center of the evolution period flip attached protons selectively, resulting in decoupling between distant and attached protons. (Reprinted from J. Magn. Reson. 60, V. Rutar, et ai, 333, copyright (1984), with permission from Academic Press, Inc.)...

In the following, selected results will be presented on the conventional electrochemical synthesis of metal chalcogenide binary and ternary systems, conducted by employing variants of the methods outlined in the previous sections. A brief account of chemical bath deposition principles exemplified will be addressed at the end of this chapter, as being closely related to electrochemical deposition of thin films. 

Several combinations of pectinolytic and cellulytic enzymes were tested for their ability to give a cloudy apple juice of Belle de Boskoop apples. Selected results are shown in table I. 

Ru4 bears a Me and Ru5 a Et moiety instead of one of the mesityl-residues leads, in the synthesis of 98, to a higher Z-selectivity than HII. In contrast, the use of Ru5 for CM with acroleine 100, which usually reacts with relatively high Z-selectivities, results in higher -selectivity than HIT (Scheme 3.15). 

MDA) does not produce AMPH-like effects. The 3-OH, 4-OMe, and the 3-OMe 4-OH analogs of amphetamine are also inactive. Thus, it is surprising that 3,4-MDA possesses AMPH-like character. Likewise, neither MMA, PMA, nor 3,4-DMA produce DOM-like effects yet 3,4-MDA does. 2-Methoxy 4,5-MDA (MMDA-2) and 2,4,5-TMA share a common substitution pattern interestingly, these agents are essentially equipotent in producing DOM-like stimulus effects. Table 3 displays selected results. 

The hydrogenolysis of glycerol was studied over a large range of pH in order to determine the optimal pH value at which the higher reaction rate and selectivity to 1,2-PDO are obtained. Selected results are summarized in Table 35.2. In the presence of Rh/C and under neutral conditions (pHi = 5.5), a low conversion of glycerol was achieved (< 4%) after 48 h. The main product was 1,2-PDO, but EG, 1-propanol, ethanol and 1,3-PDO were also detected. Increasing the initial pH from 5.5 to 12.0 had beneficial effects both on the conversion and selectivity. The selectivity to EG decreased from 13% under neutral condition to less than 1% while the selectivity toward the desired 1,2-PDO increased from 52% to 96%. 

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