Outputs (2107)

Gas incorporation in sputtered and evaporated metal films
Thesis
Mitchell, I. V. (1972). Gas incorporation in sputtered and evaporated metal films

The argon and nitrogen gas concentrations in thin films have been measured for seven different metals. Sputtered and evaporated films are deposited on glass and tungsten substrates in a stainless steel ultra high vacuum system, which is designed to o... Read More about Gas incorporation in sputtered and evaporated metal films.

Studies on the structure of the insect feeding inhibitor azadirachtin
Thesis
Percy, G. (1972). Studies on the structure of the insect feeding inhibitor azadirachtin

Azadirachtin C35H44O16, a locust feeding inhibitor, was first extracted from neem seeds by Butterworth in 1967. Butterworth identified two acetate esters, two carboxymethyl groups, a tiglate ester, two hydroxyl groups and a 2,3-dihydrofuran ring in t... Read More about Studies on the structure of the insect feeding inhibitor azadirachtin.

Electrostatic space focusing of molecular beams: some methods and applications
Thesis
Sweeting, R. C. (1972). Electrostatic space focusing of molecular beams: some methods and applications

Electrostatic space focusing of molecular beams has been introduced by means of a brief review of some methods which have been employed in the development of microwave spectroscopy of molecules.
Some electrostatic focuser configurations suitable for... Read More about Electrostatic space focusing of molecular beams: some methods and applications.

Volatile chemicals of the ant myrmica rubra
Thesis
Wadhams, L. J. (1972). Volatile chemicals of the ant myrmica rubra

The optical properties of rare earth metals
Thesis
Cleyet, B. (1973). The optical properties of rare earth metals

Ellipsometric measurements at the film-substrate interface of the optical constants of five lanthanide metals, (Nd, Gd, Tb, Dy and Yb), have been made within 0.5 and 5.5eV. General agreement was found with theoretically predicted conductivity from A.... Read More about The optical properties of rare earth metals.

The cationic polymerization of ketene acetals
Thesis
Dunn, D. J. (1973). The cationic polymerization of ketene acetals

This work has been divided into two sections:
SECTION A (Chapters 1-5)
This section is concerned with the preparation and cationic polymerization of various ketene acetals CH2 :C(OR1)OR2. Four ketene acetals have been synthesized (two of which are... Read More about The cationic polymerization of ketene acetals.

Researches into the function of metal halides in cationic polymerisation
Thesis
Grattan, D. W. (1973). Researches into the function of metal halides in cationic polymerisation

The work was concerned with the study of the ionisation of aluminium halides in alkyl halides, and the role of these solutions in cationic polymerisatlons. These are problems of long standing interest which became topical through the proposal of a ne... Read More about Researches into the function of metal halides in cationic polymerisation.

The fracture of filled epoxy resins
Thesis
Lilley, J. (1973). The fracture of filled epoxy resins

The useful structural materials are those that are both strong and tough. The "toughness" of a given material is characterised by its fracture energy which is refined as the total work expended in propagating the crack so as to produce unit area of n... Read More about The fracture of filled epoxy resins.

A study of the rearrangement products from isoxazolopyridinium salts
Thesis
Phipps, J. R. (1973). A study of the rearrangement products from isoxazolopyridinium salts

Brief treatment of tetrahydro-4-oxoisoxazolo [2,3-a]
pyridinium bromide and its 3-methyl derivative with boiling acetic anhydride gave 4-acetyl-5,6-dihydro-4H-furo [3,2-b] pyrid-2-one and its 3-methyl counterpart.
The structures of these rearrangem... Read More about A study of the rearrangement products from isoxazolopyridinium salts.

Synthesis and properties of thieno- and furo- tropones
Thesis
Robinson, M. J. (1973). Synthesis and properties of thieno- and furo- tropones

The synthesis of thieno[3,2-b]troponesand furo-[3,2-b]tropones by dehyrdrobromination of ?-dibromoketones using lithium carbonate in anhydrous N,N-dimethylformamide is investigated. Synthetic routes to furo[3,2-b]tropone and to three substituted thie... Read More about Synthesis and properties of thieno- and furo- tropones.