Outputs (251)

The synthesis and photochemical behaviour of benztropones and related compounds
Thesis
(1984). The synthesis and photochemical behaviour of benztropones and related compounds

Our aim was to identify the possible factors which controlled the photochemical reactions of benztropones or more widely , annulated tropones,by synthesising benztropones with electron-donating and electron-withdrawing substituents on the benzene rin... Read More about The synthesis and photochemical behaviour of benztropones and related compounds.

Synthetic approaches to 1,3-diazepines
Thesis
(1984). Synthetic approaches to 1,3-diazepines

A number of possible synthetic routes to monocyclic, fully unsaturated 1,3-diazepines are reported. Diazabicycloheptanones were prepared from the addition of dimethylsulphoxonium methylide to alkylated pyrimidones and attempts were made to expand th... Read More about Synthetic approaches to 1,3-diazepines.

Adaptive filters for two to four wire conversion in telephony
Thesis
(1984). Adaptive filters for two to four wire conversion in telephony

The problem of inaccurate two to four wire conversion is considered, and a conprehensive survey of the transhybrid responses of 1845 subscribers' lines is carried out. Results on the optimum performance achieved by line matching techniques are prese... Read More about Adaptive filters for two to four wire conversion in telephony.

Stereochemical studies of heterocyclic analogues of decalins
Thesis
(1984). Stereochemical studies of heterocyclic analogues of decalins

This dissertation is concerned with the synthesis of the octahydro-1-benzopyran and octahydro-1,4-benzoxazine systems and the application of 1H and 13C n.m.r. spectroscopy to determine the stereochemistry and major conformation adopted by the isomer... Read More about Stereochemical studies of heterocyclic analogues of decalins.

An A.E.S. study of S.E.E. and electron beam effects at oxygen exposed aluminium surfaces
Thesis
Adem, E. H. (1985). An A.E.S. study of S.E.E. and electron beam effects at oxygen exposed aluminium surfaces

An AES technique has been used to Investigate oxygen adsorption at clean polycrystalline aluminium surfaces. The adsorption process was found to consist of two stages: chemisorption, reached within the first 50L of oxygen exposure, is followed by an... Read More about An A.E.S. study of S.E.E. and electron beam effects at oxygen exposed aluminium surfaces.

The deactivation of singlet molecular oxygen in the gaseous phase
Thesis
Richards, D. S. (1985). The deactivation of singlet molecular oxygen in the gaseous phase

A spin-label ESR study of drug binding to DNA
Thesis
Strange, R. W. (1985). A spin-label ESR study of drug binding to DNA

A spin-labelled derivative of the drug Proflavine was prepared and its interactions with natural DNA in fibres were investigated using the technique of electron spin resonance (ESR). Computer simulations of the ESR spectra showed that spin-labelled p... Read More about A spin-label ESR study of drug binding to DNA.

N.M.R. studies of the protonation of pyrimidines
Thesis
Swetnam, S. P. (1985). N.M.R. studies of the protonation of pyrimidines

Adaptive techniques for signal enhancement in the human electroencephalogram
Thesis
Winski, R. (1985). Adaptive techniques for signal enhancement in the human electroencephalogram

This thesis describes an investigation of adaptive noise cancelling applied to human brain evoked potentials (EPs), with particular emphasis on visually evoked responses. The chief morphological features and signal properties of EPs are described. Co... Read More about Adaptive techniques for signal enhancement in the human electroencephalogram.

The reactions of trivalent phosphorus compounds with electrophilic acetylenes
Thesis
Caesar, J. C. (1986). The reactions of trivalent phosphorus compounds with electrophilic acetylenes

This thesis is concerned with the investigation of the reactions of some trivalent phosphorus compounds with electrophilic acetylenes, and in particular dimethyl acetylenedicarboxylate. These studies have involved extensive use of nuclear magnetic r... Read More about The reactions of trivalent phosphorus compounds with electrophilic acetylenes.