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Enhanced capacity

Isoxazole dissolves in approximately six volumes of water at ordinary temperature and gives an azeotropic mixture, b.p. 88.5 °C. From surface tension and density measurements of isoxazole and its methyl derivatives, isoxazoles with an unsubstituted 3-position behave differently from their isomers. The solubility curves in water for the same compounds also show characteristic differences in connection with the presence of a substituent in the 3-position (62HC(17)1, p. 178). These results have been interpreted in terms of an enhanced capacity for intermolecular association with 3-unsubstituted isoxazoles as represented by (9). Cryoscopic measurements in benzene support this hypothesis and establish the following order for the associative capacity of isoxazoles isoxazole, 5-Me, 4-Me, 4,5-(Me)2 3-Me> 3,4-(Me)2 3,5-(Me)2 and 3,4,5-(Me)3 isoxazole are practically devoid of associative capacity. [Pg.9]

Figure 23.18(a) Enhanced capacity utilization of the network with the improved p.f. [Pg.748]

Demineralization by SAC(H)/WBA(OH) Removes virtually all TDS except silica and carbon dioxide. The weakly basic anion cuts operating costs through a significantly enhanced capacity and reduced regeneration demands. However any sodium slip from the cation unit passes through the anion and increases the conductivity of the treated water. [Pg.358]

Chitosan for oral administration to humans is generally recognized as safe. In vitro, chitosan has been reported to bind bile acids The role of the accompanying anion is important for instance chitosan orotate salt has enhanced capacity for bile acids [11,264-267]. [Pg.188]

Jaffe, H.A., Buhl, R., Borok, Z., Trapnell, B. and Crystal, R.G. (1989). Activated alveolar macrophages express increased levels of cytochrome b245 heavy chain mRNA transcripts correlating with enhanced capacity to release oxidants. Clin. Res. 37, 477A. [Pg.229]

These results have been initially considered as evidence for specific ion adsorption at ITIES [71,72]. Its origin was ascribed to extensive ion pair formation between ions in the aqueous phase and ions in the organic phase [71] [cf. Eq. (20)], or to a penetration into the interfacial region [72]. The former model, which has been considered in this context earlier [60], allows one to interpret the enhanced capacity in terms of Eq. (22). Pereira et al. (74) presented more experimental data demonstrating the effect of electrolytes and proposed a simple model, which is based on the lattice-gas model of the liquid liquid interface [23]. Theoretical calculations showed that ion pairing can lead to an increase in the stored... [Pg.435]

The most complex automated systems are used almost exclusively by centralized HTS operations in large pharmaceutical companies and are referred to as ultra HTS (uHTS) platforms. They typically consist of the same four functional instruments, but have the capacity to process several hundred plates per extended workday. They often incorporate a modular design philosophy with multiple duplicate instruments for enhanced capacity that offer some functional redundancy. The mechanism for moving plates from one instrument module to another is often, but not always, a continuous track-way that resembles an industrial assembly line rather than the robotic arm typically used in a workcell system [5-8],... [Pg.30]

Estradiol also induces synapses in the hippocampus and this contributes to enhanced capacity for learning and memory that is dependent on the hippocampus [13]. Estradiol exerts many other nonreproductive actions on the brain, such as fine motor coordination, seizure susceptibility, mood, protection from ischemic damage. Many of these actions occur in brain regions that show little, if any, nuclear estrogen receptors, and it seems likely that the nongenomic estrogen receptor described above may be involved [13]. [Pg.856]

The stress on enhanced experiencing as the fundamental characteristic of these substances leads, in the literature, to a stress on the importance of the setting in which the drug is taken. In order for the enhanced capacity for experience created by these substances to show itself, an adequate range of stimuli must first be available to be experienced. Administration of psychedelics under conditions of sensory deprivation seems to abolish... [Pg.4]

Dynamic adsorption of 2,2-dimethylbutane into MCM-22 expressed as amount sorbed vs. time showed a peculiar three step uptake profile [6]. This was interpreted as reflecting adsorption into different pore regions. MCM-36 showed similar three step plot but with enhanced capacity for the first, fast uptake stage. This is again a reflection of pillaring, which modified some pore features while not affecting others. MCM-41 exhibited much lower dynamic sorption capacity for 2,2-dimethylbutane than both MCM-22 and MCM-36 and would therefore produce a reduction in the overall sorption value if present. [Pg.506]

The thickness of the imprinted polymer shell can be also tuned in the range 10—40 nm by changing the relative amounts of functionalised silica nanoparticles and polymer shell precursors. The resulting core-shell particles exhibit enhanced capacity of rebinding the TNT template over 2,4-dinitrotoluene in comparison to particles prepared by precipitation polymerisation. Nevertheless, this strategy, although leading to impressive results, cannot be easily applied to other templates and monomers. [Pg.52]

Hole Sizes Small holes slightly enhance tray capacity when limited by entrainment flood. Reducing sieve hole diameters from 13 to 5 mm ( to in) at a fixed hole area typically enhances capacity by 3 to 8 percent, more at low liquid loads. Small holes are effective for reducing entrainment and enhancing capacity in the spray regime (Ql < 20 m3/hm of weir). Hole diameter has only a small effect on pressure drop, tray efficiency, and turndown. [Pg.31]

The analysis of the molecular basis for unexpected responses of ultrarapid CYP2D6 metabolizers to codeine follows a similar line of reasoning. The ultrarapid metabolizers have enhanced capacity to metabolize codeine and hence may exhibit exaggerated responses, such as abdominal cramping, fuzzy vision and disorientation.(113) Because ultrarapid metabolizers occur more frequently among Hispanic, African and Saudi Arabian than Asian populations,(106) the former groups would be more likely to experience exaggerated responses to codeine. [Pg.20]

AuCl2- or even a higher order complex. While it is possible that the enhanced capacity of Au1 for complexation with soft ligands may account for the disparate distributions of Ag and Au, fractionation of Au and Ag may also be caused by a significant Aum chemistry in seawater. The major species of Au111 in seawater are expected to be Au(OH)3 or Au(OH)3C1 (Baes and Mesmer, 1976). Although the analysis ofTumer etal. (1981) indicated that the field of Aum stability is somewhat outside the oxidation-reduction conditions encountered in seawater, a paucity of direct formation-constant observations for both Aum and Au1 creates substantial uncertainties. Furthermore, with respect to thermodynamic predictions of oxidation-reduction behaviour the ocean is not a system at equilibrium. [Pg.340]

Fractional hole area (sieve trays). Eight to 10% is generally considered optimum. Higher area may enhance capacity at the expense of more weeping at low gas flow rates. [Pg.23]

As the concentration of enhancer in the adhesive layer increases by 5 folds, the skin permeation rate of progesterone across the intact skin increase substantially for capric acid and decyl-methyl sulfoxide, but not for azone and oleic acid. The delipid-ization of stratum corneum significantly affects the enhancing effect of azone on the skin permeation rate of progesterone, but not on that of decylmethyl sulfoxide. The effect of delipidization on the enhancing capacity of capric acid and oleic acid is relatively small (Table V). [Pg.297]

An innovative approach towards an enhanced capacity for vanillin formation would be to introduce an enzyme or pathway to generate vanillin from a mainstream intermediate of the plant phenylpropa-noid pathway. The isolation of the gene encoding the bacterial vanillin-forming enzyme HCHL (detailed earlier) raised this possibility (Gasson et al., 1998). In principle, feruloyl-CoA, an intermediate of the plant monolignol pathway (Whetten and Sederoff, 1995), could be converted... [Pg.302]


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See also in sourсe #XX -- [ Pg.356 ]




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