Experimental results 3 Reference Reports

The THM has been recently applied to several reactions whose cross section is crucial for the study of light element abundance in stellar environments. In particular the reactions 6Li(p, a)3He, 7Li(p, a)4He, 9Be(p, a)6Li and 11B(p, a)sBe were studied and the corresponding bare nucleus cross sections were measured. An exhaustive discussion of the experimental results is reported in references [4-7] respectively. 

Table 2 gives our calculated results for the equilibrium volume Vq, bulk modulus Bq, and enthalpy of formation AH. Theoretical results refer to T=0, uncorrected for zero point motion, whereas experimental values refer to room temperature. Note that the extensive quantities AH and Vq arc reported per atom in the present paper, i.e., divided by the total number of atoms. As well known the LDA underestimates the volume. Comparing the bulk modulus for T3 and D8s we see that the addition of Si to pure Ti has a large (26 %) effect on the bulk modulus, indicating that p electrons of Si have a strong effect on the bonding in this system. 

While the few examples quoted provide some general guidance as to the behaviour of nickel-rich materials in contact with molten metals and salts, it cannot be over-emphasised that such behaviour can be very considerably modified by the presence of very small amounts of contaminants in the liquid media (see Sections 2.9 and 2.10). The effect of very small contents of sodium chloride on the corrosion of nickel-base alloys by sodium sulphate has been referred to previously and other reported examples involving trace amounts, particularly of gaseous impurities, underline the need for great care in interpretation of experimental results. 

Due to technical difficulties in measurement, experimental results for the local film thickness and pressure distributions caused by asperities are quite limited that only two experiment cases recently have been reported which are employed here as the comparison reference. 

Table 3. Comparison of experimental and calculated equilibrium potentials for various gas environments and electrolyte compositions, 400 °C, relative to Ag/Ag+ reference. Results are reported on the basis of changes in the equilibrium potential relative to a base case of pure potassium pyrosulfate under an air environment.

The random A1 siting method of reference (7) was used to compute 29Si NMR intensities for comparison with experimental results reported in reference (2). The results in Table II show clearly some discrepancy between the experimental and calculated results. The variance a2 ranges from 35 to 329. The discrepancy is greatest at higher Si/Al ratios where the experimental distribution is much sharper than is expected of the maximum probability distribution of silicon and aluminum atoms. These results imply some ordering of the aluminum atoms in the lattice. 

The Ky results of Sweeton, Mesmer and Baes (35) plotted in Fig. 2 were reported in 1974 and although they only extend to 300°C they may well be more accurate above this temperature than the experimental results of Fisher and Barnes(36), since, as mentioned, earlier, the Debye-Huckel theory may not give reliable extrapolations to infinite dilution at temperatures where water is highly compressible. While their work (35) involves extrapolation to infinite dilution as well as to higher temperatures it is very encouraging to note that their ACp at 300°C (-960 J K mol ) is of the magnitude expected on the basis of the NaCl studies referred to in Section 2. The conductance results of Sirota and Shviriaev (37) above 300°C also seem more consistent with the results of Sweeton, Mesmer and Baes (35), than with those of Fisher and Barnes (36). Marshall and Franck s recent representation of data up to 1000°C and 10,000 bars (38) predicts high temperature SVP results somewhat lower than those of Sirota and Shviriaev (37). 

The state-specific iterative (SC) dressing on each individual state has been applied to the vertical outer valence IPs of CO. These calculations represent a first application of this dressing technique to doublet open shells. All IP calculations have been performed with the (5s4p2d/ /2s2p) basis set at the experimental geometry of neutral CO. The results are reported in Table 3, along with a number of reference calculations. 

As discussed earlier in Section 5.2, introducing thin n-type buried layers under the gate oxide is expected to improve channel mobility. The accumulation mode DMOS structure, referred to as ACCUFET, has been patented by Baliga in 1996 [35]. Experimental results on this structure implemented in 6H-SiC have been published in work [36]. Similar devices implemented in 4H-SiC and referred to as Accu-DMOSFET have been reported later by Singh et al. [37]. 

Peterson (reference listedl reported in early 1991 dial researchers at Harvard University made what is considered a remarkable prediction regarding the energy-level transitions that occur in a helium atom. The agreement between theoretical calculations and experimental results show lhat computational methods lor constructing a model of a Iwo-cleciron atom am work, thus bridging the gap between theory and practice. 

Moreover, the current-potential curves are affected by the disproportionation reaction therefore, other variables (the rate constant for the disproportionation reaction) must be taken into account. Since experimental results for many interesting systems show clear evidence of slow kinetics, ad hoc simulation procedures have typically been used for the analysis of the resulting current-potential curves [31, 38, 41, 48]. As an example, in reference [38], it is reported that a clear compropor-tionation influence is observed for an EE mechanism with normal ordering of potentials and an irreversible second charge transfer step. In this case, the second wave is clearly asymmetric, showing a sharp rise near its base. This result was observed experimentally for the reduction of 7,7,8,8-tetracyanoquinodimethane in acetonitrile at platinum electrodes (see Fig. 3.20). In order to fit the experimental results, a comproportionation rate constant comp = 108 M-1 s-1 should be introduced. 

In this chapter we deal primarily with experimental results that have been reported dealing with parametric interactions in nonlinear poled polymers, i.e. mostly on second harmonic generation in phase-matched configurations. Because the theoretical analysis associated with these processes has been known for some time and has been independently reviewed many times, we will only briefly overview these basics. Also, the polymeric materials developed for similar applications are reviewed in another section of this book and we refer the reader to that for details. 

The major experiments that will be discussed are listed in Table 1. All experimental results reported since the first (Hydrogen 1) conference for each level interval or decay rate are listed. Since there is no controversy in the theoretical results, only the most recent values of these are listed. Complete references can be found in [1,2,3] (o-Ps decay), [3,4] p-Ps decay, and [5,6] (energy level intervals). 

NMR experiments on representative systems like CPs and organic conductors are presented in the next section. Majority of the work reported in CP and organic conductors are concentrated on doped polyacetylene (PANI), polypyrrole (PPY) and poly thiophene (PT). But, before discussing the experimental results, it is better to review the NMR theory as applicable to CPs/organic conductors. A brief presentation of the same has been given here for the ready reference. 

Experimental data that we obtained are compared with previously reported results. (Refers to the data as individual results.)... 

On the other hand, some experimental results are in agreement with the predominance of path b (Fig. 24) they arc due in particular to the aptitude of a very large number of substrates to react readily with aldehydes (see references reported for 12 and Ref. 274). Indeed, several successful syntheses of Mannich bases have been carried out starting from the hydroxymethyl derivative of the substrate, as reported for C-Mannich bases obtained from ferrocenyl derivatives,- nitroalkanes. - and hydrogen cyanide as well as for N-, S-, P-Mannich bases of benzimidazoles, sulfonic acids,- phosphines, etc. 

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