This thesis deals with the existence and properties of certain types of covering spaces. It contains the discussion of a generalization of the notion of simple connectedness and several well-known theorems depending on this.
The amino acid C14H19O4N, obtained from annotinine by oxidative fission of ring A, has been converted to the o,N-diacetyl acyclic anhydride C18H22O6N, and the anhydride ring has been shown to be five-membered. Oxidation studies ...
The construction of a field emission ion source and its adaptation to a mass spectrometer is described. The problems involved and the advantages of such an ion source are discussed.
An experimental investigation was made involving the synthesis of nepheline (NaAlSiO4) under varying conditions of temperature and water pressure 2022-2130 for each synthesized charge was obtained using x-ray diffraction methods. It was ...
A description of a Dempster type double focusing mass spectrograph, converted to a mass spectrometer is reported. The latter part of the thesis deals with an investigation of a Shaw type solid ion source. Ten microgram...
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