An NMR-based nanostructure switch for quantum logic

We propose a nanostructure switch based on nuclear magnetic resonance (NMR) which offers reliable quantum gate operation, an essential ingredient for building a quantum computer. The nuclear resonance is controlled by the magic number transitions of a few-electron quantum dot in an external magnetic field.Comment: 4 pages, 2 separate PostScript figures. Minor changes included. One reference adde

Engineering geology of British rocks and soils : Gault Clay

The Gault is a sequence of clays, mudstones and thin siltstones with bands of phosphatic nodules of Middle and Upper Albian age. Its outcrop stretches south-westward fron1 East Anglia through Wessex to west Dorset and surrounds the Weald in an arc from North East Kent westwards through Surrey to Hampshire where it turns south and returns· eastward through west and east Sussex. The Gault clay thickens to the south and reaches its maximum developlnent of over 100 m in the Weald and thins to the west as it passes into Hampshire and Dorset. The Gault clay contains both clay and non-clay mineralso The major non-clay minerals are quartz and calcite. Quartz usually makes up about 20% or more of the Gault and its distribution is fairly uniform. Calcite is present as fossil debris and as a cementing agent. The Gault is more calcareous in the north east than the south and west

A Comparison of Jurassic Marine Benthonic Faunas from South-America and New-Zealand

Fil: Damborenea, Susana Ester. División Paleontología Invertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Manceñido, Miguel Oscar. División Paleontología Invertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin