WorldCat Identities

Taylor, S. D.

Overview
Works: 9 works in 10 publications in 1 language and 17 library holdings
Genres: Academic theses 
Roles: Author
Publication Timeline
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Most widely held works by S. D Taylor
A test of the (modified) black model for options on the SPI futures contract by Martinique( Book )

1 edition published in 1994 in English and held by 9 WorldCat member libraries worldwide

Plaintee, plaintee love by Stella Dennis Taylor( )

2 editions published in 1923 in English and held by 2 WorldCat member libraries worldwide

The geography and epidemiology of psychiatric illness in Southampton, with particular reference to schizophrenia by S. D Taylor( Book )

1 edition published in 1974 in English and held by 1 WorldCat member library worldwide

Physical properties of heavy oil distillation cuts( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: In order to improve heavy oil characterizations for modeling crude oils in refinery processes, an in-house Deep Vacuum Fractionation Apparatus (DVFA) was recently modified to provide reproducible extended distillation data for heavy oils. In addition, an interconversion method was developed to obtain the Normal Boiling Points (NBP) of the distillation fractions. In the current contribution, the physical properties of the distillation cuts collected using the DVFA (the development dataset) are measured and used to evaluate existing correlations and develop new correlations to predict normal boiling point (NBP), specific gravity (SG), and molecular weight (MW) of heavy distillation cuts. The new correlations were also tested on an independent test dataset obtained from the literature. A modified version of Soreide's correlation was proposed for either NBP or MW. The correlation decreased the average absolute relative deviations (AARD) of the NBP from 3.0% to 2.0%, and of the MW from 7.8% to 5.3% for the development dataset and from 2.5% to 2.3% for the test dataset. Similar improvements were obtained for the predicted MW. A new correlation was proposed to predict SG from the H/C ratio and MW, which decreased the AARD from 1.7% to 0.8% for the development dataset and from 3.1% to 1.4% for the test dataset. Of greater significance, the new correlations improved the trend in the predicted properties toward higher boiling cuts and therefore, are expected to provide more accurate estimates of extrapolated properties for heavy oils
Vapor pressure and thermal properties of heavy oil distillation cuts( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: The vapor pressure, liquid heat capacity, and heat of combustion were measured for distillation cuts obtained from several heavy oils using a deep vacuum fractionation apparatus. Derivatives of fitted vapor pressure equations were used to determine heats of vaporization based on the Clausius–Clapeyron equation. Existing correlations were evaluated against these data and new correlations were proposed including a generalized Cox vapor pressure correlation (as a function of molecular weight and boiling point temperature) and a correlation for the heat of vaporization based on the generalized Cox equation. Two versions of Tsonopoulos correlations were developed for liquid heat capacity: one using the Watson Factor and another using the H / C ratio. In general, the new correlations improved the prediction of heavy cut properties compared with correlations from the literature and performed similarly for light cuts (both for the development dataset and for independent test datasets). In addition, the heats of combustion of some cuts were measured and used to validate the elemental analysis based correlations from the literature
My Bohemia by S. D Taylor( )

1 edition published in 1923 in English and held by 1 WorldCat member library worldwide

Dust and chemistry in interstellar shocks by S. D Taylor( Book )

1 edition published in 1991 in English and held by 1 WorldCat member library worldwide

An experimental and ab initio study on the abiotic reduction of uranyl by ferrous iron( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Abstract: It is important to understand the mechanisms controlling the removal of uranyl from solution from an environmental standpoint, particularly whether soluble Fe(II) is capable of reducing soluble U(VI) to insoluble U(IV). Experiments were performed to shed light into discrepancies of recent studies about precipitation of U-containing solids without changing oxidation states versus precipitation/reduction reactions, especially with respect to the kinetics of these reactions. To understand the atomistic mechanisms, thermodynamics, and kinetics of these redox processes, ab initio electron transfer (ET) calculations, using Marcus theory, were applied to study the reduction of U(VI)aq to U(V)aq by Fe(II)aq (the first rate-limiting ET-step). Outer-sphere (OS) and inner-sphere (IS) Fe-U complexes were modeled to represent simple species within a homogeneous environment through which ET could occur. Experiments on the chemical reduction were performed by reacting 1 mM Fe(II)aq at pH 7.2 with high ( i.e., 0.16 mM) and lower ( i.e., 0.02 mM) concentrations of U(VI)aq . At higher U concentration, a rapid decrease in U(VI)aq was observed within the first hour of reaction. XRD and XPS analyses of the precipitates confirmed the presence of (meta)schoepite phases, where up to ∼25% of the original U was reduced to U 4+ and/or U 5+ -containing phases. In contrast, at 0.02 mM U, the U(VI)aq concentration remained fairly constant for the first 3 h of reaction and only then began to decrease due to slower precipitation kinetics. XPS spectra confirm the partial chemical reduction U associated with the precipitate (up to ∼30%). Thermodynamic calculations support that the reduction of U(VI)aq to U(IV)aq by Fe(II)aq is energetically unfavorable. The batch experiments in this study show U(VI) is removed from solution by precipitation and that transitioning to a heterogeneous system in turn enables the solid U phase to be partially reduced. Ab initio ET calculations revealed that OS ET is strongly kinetically inhibited in all cases modeled. OS ET as a concerted proton-coupled ET reaction (ferrimagnetic spin configuration) is thermodynamically favorable (−35 kJ/mol), but kinetically inhibited by concurrent proton-transfer (10 − 19 s − 1 ). OS ET as a sequential proton-coupled ET reaction is thermodynamically unfavorable (+102 kJ/mol) as well as kinetically inhibited, where ET is the rate-limiting step (10 − 12 s − 1 ). In contrast, the reduction of U(VI)aq to U(V)aq by Fe(II)aq as an IS ET reaction is both thermodynamically favorable (−16 kJ/mol) and kinetically rapid (10 8 s − 1 ); the IS ET rate is several orders of magnitude faster than the OS ET rate. Thus, reduction of U(VI)aq to U(V)aq by Fe(II)aq in a homogenous system could occur if an IS Fe-U complex can be achieved. However, the formation of IS Fe-U complexes in an homogeneous solution is predicted to be low; considerable thermodynamic and kinetic barriers exist to proceed from an OS ET reaction to an IS ET reaction, a process that needs to overcome dehydration of the first solvation shell (+96 kJ/mol) and hydrolysis of Fe(II)aq . The computational results complement and further substantiate experimental results where the reduction of U(VI)aq by Fe(II)aq does not occur
Influence of format on in vitro penetration of antibody fragments through porcine cornea( Book )

1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

 
Audience Level
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Audience Level
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  Kids General Special  
Audience level: 0.74 (from 0.67 for A test of ... to 1.00 for Influence ...)

Languages
English (10)