Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Griffiths studies

Originating from Cornwall, Peter Griffiths studied initially at University College, North Wales (1985-88), and subsequently the University of Bristol (PhD, 1991). After post-doctoral positions in Bristol and Stockholm, he moved to a lectureship at Cardiff in 1995. Aged 32, his research interests centre around colloidal systems, in particular polymer/surfactant interactions. [Pg.190]

Thus the detailed mechanism of peroxide bleaching is not yet finally resolved. It should be borne in mind, however, that the work of Dannacher and Schlenker was carried out at 60 °C on tea-stained cotton, whereas Spiro and Griffith studied the decolorisation of individual colorants at 21-25 °C in the absence of a textile substrate. [Pg.121]

N. J. Cambell, A. C. Dengel, C. J. Edwards, W. P. Griffith, Studies on transition metal peroxo complexes. Part 8. The nature of peroxomolybdates and peroxotungstates in aqueous solution. J. Chem. Soc., Dalton Trans. 6 (1989) 1203. [Pg.174]

Norton and Griffiths " studied the comparison of flowcell and DD interfaces between GC and FTIR spectrometers. Seven barbiturates were separated on fused-silica GC capillary columns. Infrared spectra of the separated barbiturates were measured in real time by either a Hewlett-Packard infrared detector (flow-cell) interface or a Digilab Division of Bio-Rad Tracer (DD) interface. Without losing chromatographic resolution, the GC/DD-FTIR interface gave both detection limits and minimum identifiable quantities nearly two orders of magnitude lower than the flow-cell GC/FTIR interface. [Pg.983]

Griffiths study is only one example of the overlapping of biochemistry and organic chemistry, a healthy marriage of disciplines. The sooner the molecular... [Pg.50]

While dimensional analysis is often a useful tool for dealing with a problem, it has not yet been successful for studying this phenomenon, mainly because the fluid properties of importance in forced-convection boiling have not been identified. Burn-out correlations based on dimensional analysis have appeared, e.g., Griffith (G5), Reynolds (R2), Zenkevitch (Zl), Ivashkevich (12), Tong et al. (T6), but the fluid properties used in these cases have been chosen on the basis of various assumptions without any demonstration that the properties used were the correct ones. They have, in fact, been shown in recent work by Barnett (B5), (to be considered later) to be either incorrect or incomplete. [Pg.210]

A number of workers, including, Reiher(20), Hilpert<21), Griffiths and Awbery122, have studied the flow of a hot gas past a single cylinder, varying from a thin wire to a... [Pg.426]

Mintzer MZ, Stoller KB, Griffiths RR A controlled study of flumazenil-precipitated withdrawal in chronic low-dose benzodiazepine users. Psychopharmacology (Berl) 147 200-209, 1999... [Pg.157]

As the results of Pfundt (1981), Griffith (1987) and Lee et al. (1993) show, students have problems in dealing with the idea of empty spaces between particles. In her studies, Pfundt presented students with different representations of atoms. The students had to choose the one that represented their ideas at best. Numerous students chose representations of cubic or hexagonal atoms, because they fit without gaps between them (Pfundt, 1981, p. 87). Griffith and Preston (1992) could explicitly show that students suppose that the size of a crystal corresponded to the shape of its atoms. Furthermore, they discuss the parallels between this students conception and the corresponding historical idea of Rene Hairy. [Pg.229]

Six students thought that the particles stayed still at the solid state and 13 students thought that there was no space between the atoms. This result is consistent with Griffith Preston (1992) study. [Pg.265]

Drew LR, Hodgson DM, Griffiths KM (1999). Clozapine in community practice a 3-year follow-up study in the Australian Capital Territory. Aust NZ J Psychiatry667-75. [Pg.39]

In a study of the degradation of sodium dodecyltriethoxy sulfate under mixed-culture die-away conditions using acclimated cultures (Griffiths et al. 1986), the metabolites were identified and the kinetics of their synthesis compared with the degradation pathways elucidated in investigations using pure cultures (Hales et al. 1982,1986). [Pg.249]

Ponce RA, BarteU SM, Kavanagh TJ, Woods JS, Griffith WC, Lee RC, Takaro TK, Faustman EM. 1998. Uncertainty analysis methods for comparing predictive models and biomarkers a case study of dietary methyl mercury exposure. Regulatory Toxicol Pharmacol 28 96-105. [Pg.183]

In a summary of the human abuse literature on anorectic phenylethylamines, Griffiths et al. (1979) found there was a good correlation between the results of self-administration studies in animals and information about the subjective effects and abuse in man. Specifically, amphetamine, diethyl-propion, and phenmetrazine have been associated with numerous clinical case reports involving abuse, and these three compounds as well as benz-phetamine and /-ephedrine have shown similar subjective effects in drug abuser populations (Griffiths et al. 1979). In addition, fenfluramine was associated with low incidence of abuse in humans and did not maintain self-injection responding in animals. Chlorphentermine was similarly associated with low incidence of abuse in man, but did not maintain selfinjection uniformly in animals (Griffiths et al. 1979). [Pg.35]

Mewhinney JA, Griffith WC, Muggenburg BA. 1979. Comparison of metabolic models used to describe the fate of inhaled 241Am02 based on inhalation studies in the beagle dog. Health Phys 37(6) 830. [Pg.250]

Griffiths, R.R. and Woodson, P.P., Caffeine physical dependence a review of human and laboratory animal studies. Psychopharmacology 94 437-51, 1988. [Pg.299]

Griffiths, R. R., and Woodson, P. P., Reinforcing properties of caffeine studies in humans and laboratory animals. Pharmacol. Blochem. Behav. 1987. [Pg.302]

Ho Peng Yoke. On the dating of Taoist alchemical texts. Griffith Asian papers, no. 1. Nathan (QLD) School of Modem Asian Studies, Griffith University, 1979. [Pg.328]

Compound dynamic instabilities as secondary phenomena. Pressure-drop oscillations are triggered by a static instability phenomenon. They occur in systems that have a compressible volume upsteam of, or within, the heated section. Maul-betsch and Griffith (1965, 1967), in their study of instabilities in subcooled boiling water, found that the instability was associated with operation on the negative-sloping portion of the pressure drop-versus-flow curve. Pressure drop oscillations were predicted by an analysis (discussed in the next section), but because of the... [Pg.494]


See other pages where Griffiths studies is mentioned: [Pg.33]    [Pg.296]    [Pg.77]    [Pg.244]    [Pg.359]    [Pg.112]    [Pg.184]    [Pg.293]    [Pg.214]    [Pg.215]    [Pg.43]    [Pg.118]    [Pg.128]    [Pg.132]    [Pg.152]    [Pg.191]    [Pg.166]    [Pg.333]    [Pg.189]    [Pg.30]    [Pg.261]    [Pg.7]    [Pg.31]    [Pg.70]    [Pg.102]    [Pg.417]    [Pg.132]    [Pg.182]    [Pg.498]   


SEARCH



Griffith

© 2024 chempedia.info