Browsing School of Chemistry and Physics by Title
Now showing items 439-458 of 656
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Radiating solutions with heat flow in general relativity.
(1994)In this thesis we model spherically symmetric radiating stars dissipating energy in the form of a radial heat flux. We assume that the spacetime for the interior matter distribution is shear-free. The junction conditions ... -
The rates and mechanisms of substitution from Ru(II) complexes with different non-leaving ligand environments.
(2019)Results from multiple studies have confirmed that the nature of ligands on the metal centre determines the properties of an anti-cancer agent in a biological environment. Ligands affect solubility, substitution reactivity, ... -
A ray tracing study of VLF phenomena.
(1997)Whistlers have, for many years, been used as probes of the ionosphere and magnetosphere. Whistlers received on the ground have been shown (Smith [1961], Helliwell [1965]) to have propagated, in almost all cases, through ... -
Reactions and reactivity of allyl and related carbamates.
(1997)Carbamate chemistry has flourished since the 1980's which saw the introduction of the carbamoyl group by Hoppe and co-workers, prominent researchers in this area, as a suitable moiety for the activation and stabilisation ... -
Reactions and reactivity of allylic and benzylic carbamates.
(1995)The purpose of this investigation was to study the effect of the carbamate group on the reactions and reactivity of substituted 1,1-diphenylmethane and a,ro-diphenyl allylic compounds. A series of carbamates were prepared ... -
The redox and co-ordination chemistry of some dinuclear diphosphazane- bridged derivatives of ruthenium.
(1991)Abstract available in pdf file. -
Reduction of aldehydes and ketones to their corresponding alcohols in 1-butyl-3-methylimidazolium tetrafluoroborate.
(2017)The use and release of volatile organic solvents (VOS) to the atmosphere have become detrimental to both human health and his environment. In addition, the non-recyclability and the excessive consumption of these solvents ... -
Refractive effects in phase objects and associated phenomena.
(1994)The effect of the refraction of a laser beam propagating through three different phase objects, i.e. a laser produced plasma and two different gas media, is investigated in this thesis. It is shown that these effects ... -
Review of solar energy inclusion in Africa : a case study of Nigeria.
(2017)This work reviews solar energy inclusion in Africa using Nigeria as a case study. It reviewed studies made on viability, challenges and solutions associated with making solar energy a viable energy option in Nigeria. ... -
Rhenium(I) and -(V) complexes of N-donor heterocyclic chelates.
(2016)Abstract available in PDF file. -
Rhodium-catalyzed and uncatalyzed synthesis of boronate esters and their subsequent utility in the Suzuki realm.
(2008)This study has shown that alkythioboranes 1,3,2-dithiaborolane and 1,3,2-dithiaborinane, disproportionated significantly during their synthesis. Their interaction with 1-octene has been investigated, and the rate constants, ... -
A robust air refractometer for accurate compensation of the refractive index of air in everyday use.
(2016)Abstract available in PDF file. -
The role of sodium silicate in newsprint deinking.
(2003)Mondi Ltd. operates a deinking plant at its Merebank mill. The plant recycles 85 000 tons per annum of flat news and magazine to produce a furnish for its newsprint papermachines. A review of the relevant pulping and ... -
Role of Substituents on the reactivity of mononuclear cis-platinum(II) complexes with 2 (phenylthiomethyl)pyridyl/quinolyl non-leaving ligands.
(2017)Abstract available in PDF file. -
Ruthenium and silver complexes of potentially binucleating phosphoruspyridyl and phosphorusbipyridyl ligands.
(1994)Abstract available in pdf file. -
Safety assessment of skin-lightening formulations commonly available in the Nigerian market.
(2016)Abstract available in PDF file. -
A satellite and ground based study of fine structure in VLF whistlers.
(1992)The matched filtering technique for improving the spectral resolution of VLF whistlers, originally developed by Bhegin and Siredey (1964), has proven to be useful for extracting information about the magnetospheric plasma ...