796 research outputs found
Expression of carbonic anhydrase IX suggests poor response to therapy in rectal cancer
Contains fulltext :
80703.pdf (publisher's version ) (Closed access
Carbonic anhydrase IX expression is more predictive than prognostic in breast cancer
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52989.pdf (publisher's version ) (Closed access
18S is an appropriate housekeeping gene for in vitro hypoxia experiments
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89673.pdf (publisher's version ) (Closed access
3D metric-modelling for knowledge and documentation of architectural structures (Royal Palace in Turin)
Anomalous magnetotransport in wide quantum wells
We present magneto transport experiments of quasi 3D PbTe wide quantum wells.
A plateau-like structure in the Hall resistance is observed, which corresponds
to the Shubnikov de Haas oscillations in the same manner as known from the
quantum Hall effect. The onsets of plateaux in Rxy do not correspond to 2D
filling factors but coincide with the occupation of 3D (bulk-) Landau levels.
At the same time a non-local signal is observed which corresponds to the
structure in Rxx and Rxy and fulfils exactly the Onsager-Casimir relation
(Rij,kl(B) = Rkl,ij(-B)). We explain the behaviour in terms of edge channel
transport which is controlled by a permanent backscattering across a system of
"percolative EC - loops" in the bulk region. Long range potential fluctuations
with an amplitude of the order of the subband splitting are explained to play
an essential role in this electron system.Comment: postscript file including 3 figs, 5 page
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