SUBJECTS asymmetry

It is possible that during the fault only one ot the insulators is subject to the transitory first peak of the fault, as there may be slight misalignment between the insulators, asymmetry in the busbars, an imperfect bolt fixing and their fastening, or a combination of such factors. To be on the safe side it is advisable to consider each support and its fasteners to be suitable to withstand the forces by themselves. We have assumed a factor of safety of 100% in all the above calculations to account for this. 

Both the alkyl and the acyl have two asymmetric centers the iron and the )3-carbon. Accordingly, each composition exists as a pair of racemic mixtures. When the two diastereomeric racemic mixtures of the acyl are separately subjected to the decarbonylation in Eq. (54), only partial (<50%) epimerization is observed by NMR spectroscopy. This indicates that in the reactive intermediate, presumably three-coordinate CpFe(PPh3)COCH2-CH(Me)Ph, the iron substantially retains its asymmetry, and is therefore not planar. 

Perlmutter JS, Powers WJ, Herscovitch R Fox PT, Raichle ME. Regional asymmetries of cerebral blood flow, blood volume, and oxygen utilization and extraction in normal subjects. J Cereb Blood Flow Metab 1987 7 64-67. 

The negative resistance effect is observed when anodic oxides are subjected to so-called electroforming (i.e., annealing in vacuum).93 Such a treatment removes the special features of the anodic oxides (asymmetry of conduction and electric strength, electret effect, etc.), and the negative resistance effect may be explained using the general approach developed for amorphous dielectrics.5... 

The results showed there to be an asymmetry in colonic distribution among healthy subjects, with two-thirds of the administered dose in the proximal colon and one-third in the distal colon. In the patients, this difference was even more pronounced, with only one-tenth of the administered dose in the distal segment. 

The large increase of the high-frequency bandwidth is but one challenge for the nuclear dynamics theories of hydrogen bonding, which are the subject of this chapter. Other challenges are the band asymmetry, the puzzling appearance... 

Several important aspects of the SHG experiments are not described in a straight forward way by the model. These are the residual SHG prior to field perturbation and asymmetric response to fields of different polarity. These effects may be due to the fact that the dipoles within the stacks as formed are subjected to remnant fields from surrounding stacks. The asymmetry may be associated with structural asymmetry within the stacks or some higher ordering or arrangement which does not allow for a symmetric hysteresis about zero voltage. A distribution of nonidentical stacks is also possible. 

Because of the asymmetry of power between science and occultism, and the ever-growing public faith in the authority of science, the members of a borderland institution like the Alchemical Society had to work self-consciously to solidify its public perception as a scientific society. But the subject of the Society—alchemy—already enjoyed considerable prestige in the occult community. So the Alchemical Society used the impressive scientific and educational credentials of its membership as part of its self-validation in the eyes of the scientific world and the broader public. Most formal mentions by the Journal of its members (either as authors of papers or as participants in the... 

Methods used to demonstrate the existence of membrane phospholipid asymmetry, such as chemical labelling and susceptibility to hydrolysis or modification by phospholipases and other enzymes, are rmsuitable for dynamic studies because the rates of chemical and biochemical reactions are of a different order compared to the transmembrane translocahon of the phospholipids. Indirect methods have therefore been developed to measure the translocation rate which are consequent on the loss of membrane phospholipid asymmetry. Thus time scales appropriate to rates of lipid scrambling under resting conditions or when the forces preserving the asymmetric phospholipid distribution are disturbed can be monitored. Generally the methods rely on detecting the appearance of phosphatidylserine on the surface of cells. Methods of demonstrating Upid translocation in mammalian cells has been the subject of a recent review (Bevers etal., 1999). 

When both the asymmetry effect, resulting from the auditory scene analysis, and the temporal weighting are quantified correctly, the correlation between subjective and objective results for both of the speech databases improves significantly. Using % = 4.0 (asymmetry modelling) and a silent interval weighting of 0.1 (denoted as... 

Within ITU-T Study Group 12 a benchmark was carried out by the NTT (Japan) on the five different proposals for measuring the quality of telephone-band speech codecs. The results showed that the PSQM was superior in predicting the subjective MOS values. The correlation on the unknown benchmark database was 0.98 [ITUTsgl2con9674, 1996], In this benchmark the asymmetry value X for the PSQM... 

The simple modelling of auditory scene analysis with the asymmetry factor C(m,l) gave significant improvements in correlation between objective and subjective results. However it was found that for maximal correlation the amount of correction, as quantified by the parameter X, was different for speech and music. When applied to music databases the optimal corrected noise disturbance was found for X = 1.4 (PAQM c, 4) whereas for speech databases the optimal X was around 4.0 (PAQMC4 0). 

One problem of the resulting two cognitive modules is that predicting the subjectively perceived quality is dependent on the experimental context. One has to set values for the asymmetry effect and the weighting of the silent intervals in advance. 

Michael additions of C-nudeophiles such as the indanone 1 have been the subject of numerous further studies For example, the reaction between the indanone 1 and methyl vinyl ketone was effected by a solid-phase-bound quinine derivative in 85% yield and with remarkable 87% ee by d Angelo, Cave et al. [5], Co-polymers of cinchona alkaloids with acrylonitrile effected the same transformation Kobaya-shi and Iwai [6a] achieved 92% yield and 42% ee and Oda et al. [6b] achieved almost quantitative yield and up to 65% ee. Similarly, partially resolved 2-(hydroxy-methyl)quinudidine was found to catalyze the reaction between 1 and acrolein and a-isopropyl acrolein with induction of asymmetry, but no enantiomeric excesses were determined [7]. As shown in Scheme 4.4, the indanone 7 could be added to MVK with up to 80% ee under phase-transfer conditions, by use of the Cinchona-derived PT-catalysts 9a and 9b, affording the Michael-product 8 or enf-8, respectively [8]. The adducts 8 or ent-8 were intermediates in the stereoselective Robinson anellation of a cydohexenone ring to the indanone 7 [8],... 

Thus it would appear that neuroleptics have little effect on higher cognitive functioning in schizophrenic patients and that the improvement in attention is facilitated by a non-mesocortical-mesolimbic mechanism. There is also evidence that neuroleptics improve asymmetry in hippocampal function which may be deranged in the illness. It is generally agreed that studies of the effects of neuroleptics on normal subjects, which... 

Dipole polarization-effect moisture sensors utilize the electrical asymmetry around the water molecule (two slightly positively charged H2 atoms and a slightly negatively charged 02 atom). When these molecules are subjected to an electric field, they tend to align with the electric field because of their dipole nature. At a frequency of 20 kHz, moisture can be detected by this method. 

Another factor contributing to the asymmetry and breadth of absorption bands in crystal field spectra of transition metal ions is the dynamic Jahn-Teller effect, particularly for dissolved hexahydrated ions such as [Fe(H20)6]2+ and [Ti(H20)6]3+, which are not subjected to static distortions of a crystal structure. The degeneracies of the excited 5Eg and 2Eg crystal field states of Fe2+ and Ti3+, respectively, are resolved into two levels during the lifetime of the electronic transition. This is too short to induce static distortion of the ligand environment even when the cations occupy regular octahedral sites as in the periclase structure. A dual electronic transition to the resolved energy levels of the Eg excited states causes asymmetry and contributes to the broadened absorption bands in spectra of most Ti(m) and Fe(II) compounds and minerals (cf. figs 3.1,3.2 and 5.2). 

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