What's new in 2002
November 18, 2002:
Solid-state NMR references for aluminum-27, boron-11, cobalt-59, lithium-7, oxygen-17, rubidium-85/87, sodium-23, xenon-131, and vanadium-51 are organized as directories:
| Directory of solid-state Al-27 NMR references | ||
| Single Crystal |
Crystalline Powder Alpha-, Gamma-Al2O3, Micro-Porous, Mineral... |
Amorphous Powder |
September 4, 2002:
The sign of the Larmor frequency in the Periodic Table and in each nucleus page has been changed. We follow the conventions well discussed by Malcolm H. Levitt, in "Spin dynamics, Basics of Nuclear Magnetic Resonance" (Wiley, Chichester, 2001). That is
Larmor_frequency = -(gyromagnetic_ratio)*magnetic_field.
A nucleus with a positive gyromagnetic ratio has a negative Larmor frequency.
September 2, 2002:
By filling a form without providing your e-mail, you can improve the quality of the site in suggesting solid-state NMR references about quadrupole nuclei with half-integer spins. This form is accessible from the home page, the Periodic Table, and the pages about nuclei using the SUBMIT link.
Your contributions are first gathered in a mySQL table. Later, they will be formatted and available either on the corresponding page or from the mySQL table which is accessible using the MORE link.
References in the mySQL data base are not accessible from the internal search engine located at the upper right corner of each web page.
July 20, 2002:
Three more Java applets (rotary echo, spin lock, and two pulses) for a single crystal and for a powder are added.
July 19, 2002:
The page describing the different panels of an applet is divided into four pages: introduction, simulation, experimental, and fitting and printing pages.
The NMR reference page that supports the applets is divided into eight pages: one pulse, rotary echo, spin lock, composite pulse, two pulses, Hahn echo, MQ-MAS, and Solomon echo pages.
Similarly, the page providing the pulse programs for Bruker spectrometers is divided into several pages, each one describing a specific pulse program.