Diastereomeric and geometric analogs of calcipotriol, PRI-2202 and PRI-2205, were synthesized as advanced intermediates from vitamin D C-22 benzothiazoyl sulfones and side-chain aldehydes using our convergent strategy. Calcitriol, calcipotriol (PRI-2201) and tacalcitol (PRI-2191) were used as the reference compounds. Among a series of tested analogs the diastereomeric analog PRI-2202 showed the...

Since the high-Tc cuprates are in essence doped Mott insulators, systematic studies of the evolution of the normal-state properties upon changing the carrier concentration are very useful for elucidating the origin of the peculiar normal state. Bi2Sr2CuO6 (Bi-2201) system is an attractive candidate for such studies, because the carrier concentration can be widely changed by partially replacing ...

Marchionni N, Fattirolli F, Fumagalli S, et al. Improved exercise tolerance and quality of life with cardiac rehabilitation of older patients after myocardial infarction: results of a randomized, controlled trial. Circulation 2003;107:2201–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

The Ag/Bi-Sr-Ca-Cu-0 (BSCCO) interface in Ag-clad Bi-2212 tapes was investigated by high-resolution transmission electron microscopy. The interface was found to be well bonded and free of nonsuperconducting second phases. However, a one-half-unit-cell-thick layer of the Bi-2201 phase was observed between the Bi-2212 phase and the Ag-cladding. A very strong texturing of the (00 1) planes of the ...

In two-dimensional (2D) lattices, the electronic levels are unevenly spaced, and the density of states (DOS) displays a logarithmic divergence known as the Van Hove singularity (VHS). This is the case in particular for the layered cuprate superconductors. The scanning tunnelling microscope (STM) probes the DOS, and is therefore the ideal tool to observe the VHS. No STM study of cuprate supercon...

We present the results of narrow-band and broad-band imaging with the Very Large Telescope ⋆ of the field surrounding the radio galaxy TN J0924–2201 at z = 5.2. Fourteen candidate Lyα emitters with a rest-frame equivalent width of > 20 Å were detected. Spectroscopy of 8 of these objects showed that 6 have redshifts similar to that of the radio galaxy. The density of emitters at the redshift of ...

In October of 1997, a year-long collaborative project was started between Hitachi Europe Limited (HEL) and the Edinburgh Parallel Computing Centre (EPCC) at the University of Edinburgh. This project had the goal of producing an environment whereby Java programs may be executed on the Hitachi SR2201 distributed memory multi-processor machine. The two key deliverables from this work are a port of...