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(1) MIT: New insights on fusion power

David Chandler, MIT News Office
December 3, 2008

Research carried out at MIT's Alcator C-Mod fusion reactor may have brought the promise of fusion as a future power source a bit closer to reality, though scientists caution that a practical fusion powerplant is still decades away.

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(2)Disappearing superconductivity reappears -- in 2-D

Scientists studying a material that appeared to lose its ability to carry current with no resistance say new measurements reveal that the material is indeed a superconductor -- but only in two dimensions. Equally surprising, this new form of 2-D superconductivity emerges at a higher temperature than ordinary 3-D superconductivity in other compositions of the same material.

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December 7, 2008

Mathematical techniques in Powder diffraction

Mathematical techniques in Powder diffraction

Chemistry online Resources

Pepinsky's Machine, N. M. Glykos. A teaching aid to illustrate the principles and the application of the Fourier series in crystallography

Link -
  • "Pepinsky's Machine is free software and you are encouraged to use, copy, modify, and distribute both the program and its documentation (PDF, 1.1 MBytes).

  • If you ever need to reference this program in your publications (but note that you are not required -at least by me- to do so), please use the following citation : Glykos, N.M. (1999), "Pepinsky's Machine : an interactive, graphics-based Fourier synthesis program with applications in teaching and research.", J. Appl. Crystallogr., 32, 821-823.
    Electronic reprint (660 KBytes) : Local copy, or directly from J. Appl. Cryst. 32, 821-823, FREE ITEM, Copyright © International Union of Crystallography"[1].

Statistical Descriptors in Crystallography, D. Schwarzenbach et al. Reports of a working group appointed by the IUCr Nomenclature Committee

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This document provides an authoratitive statement of the use of statistics in crystallography. The document contains a Glossary of statistical terms and sections on the following topics:
Analytical Inorganic Organic Physical

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