sci.techniques.xtallography Google Group

Final reminder: 2008 Crystallographic Computing School

2008-07-23T04:22:11Z

The registration deadline for the 2008 Crystallographic Computing
School is in two days: *** July 25 ***
The schedule of the program including abstracts from all speakers is
available here:
[link]
This program puts a strong weight on fostering one-on-one

Crystallographic Computing School registration deadline approaching

2008-07-14T01:51:58Z

The registration deadline for the 2008 Crystallographic Computing
School is in two weeks: *** July 25 ***
The schedule of the program including abstracts from all speakers is
available here:
[link]
This program puts a strong weight on fostering one-on-one

Open position: associate professor of crystallography, Nancy 2009

2008-06-30T10:39:02Z

The crystallography laboratory in Nancy is renown for its leading
experimental works on accurate structures and electron density of all
type
of materials, from minerals to biological macromolecules,
crystallography
under constraints (temperature, photo-excitation, external electric
field). It is equipped with three single crystal diffractometers and

Crystallographic Software Fayre at IUCr 2008 Osaka Congress - 26th to 29th August

2008-06-27T01:28:08Z

Crystallographic Software Fayre at IUCr 2008 Osaka Congress
[link]
Thanks to the generosity of the IUCr 2008 Osaka Congress organisers,
there will be a non-Commercial Crystallographic Software Fayre at the
IUCr Osaka 2008 Congress from Tuesday 26th August to Friday 29th

CNCC Canadian student travel award winners to IUCr Osaka congress and list of Canadian delegates to IUCr congress

2008-06-22T16:17:00Z

The following is sent on behalf of the Canadian National Committee for
Crystallography (CNCC) and mainly for Canadian based
crystallographers,
including those who have donated to the Larry Calvert CNC/IUCr Trust
Fund student travel award:
[link]
The three students award winners for funding support to attend the

Bruker XRDWizard V2.9 - Powder X-ray Diffraction Variable Count Data (VCT) collection

2008-06-22T15:48:57Z

A quickish post that Bruker-AXS has released XRDWizard V2.9, which
allows
for Variable Count Data (VCT) data collection, where the measurement
time
is systematically increased towards higher 2-theta angles (Re Madsen
and
Hill, 1992, 1994; and David, 1992 ). This allows users to takes
advantage
of information present at higher angles, which is often hidden in the

XRD question (size of titania crystallites)

2008-06-13T23:06:12Z

I want to do some impregnation of alumina with an aqueous titanium
complex, aiming to get a monolayer. Hopefully after heat treatment,
the product will still have a well distributed layer of titanium, in
the form of the oxide or something similar.
As a way of assessing the success of the impregnation, I thought I'd

After 25 years: photos from the 1983 Crystallographic Computing School on the web

2008-06-07T07:24:40Z

The 1983 Crystallographic Computing School, organised by Prof. Sydney
Hall and Prof. Tamaichi Ashida, was held in Kyoto, Japan at the same
site as the upcoming IUCr Crystallographic Computing School: the
Kansai
Seminar House.
Thanks to Prof Atsushi Nakagawa, pictures of that 1983 Computing
School
are now on the IUCr Computing Commission website at:

2D pseudo-Voigt for x-ray diffraction data

2008-05-30T08:20:27Z

In x-ray diffraction physics it is often convenient to use a pseudo-
Voigt (Gaussian + Lorentzian) when analyzing two theta profiles. But
does there exist a similar 2D pseudo-Voigt when you have a 2D
diffraction spot on a detector?
More precisely I want to be able to fit the 2D model of the pseudo-
Voigt to get a better estimate of the integrated intensity.

Re: Calculate bond lenths from cif

2008-05-29T00:42:39Z

Try CrystMol ([link]
Pat Carroll

Re: Do Wyckoff positions exhaust the atomic positions in a crystal?

2008-05-28T16:47:34Z

A list of Wyckoff sites will include (x,y,z) where "x", "y" and "z"
represent real numbers. This means the set of possibilities is
infinite. The shortlist of positions you get for Wyckoff sites are the
high-symmetry places where sites transform onto themselves exactly
under symmetry operations.
Best,

IUCr Crystallographic Computing School 2008 : updated announcement

2008-05-26T03:00:26Z

IUCr Crystallographic Computing School 2008
* Sharing our knowledge *
Kyoto, Japan, August 18-23
[link]
The IUCr Crystallographic Computing School 2008 school aims to bring
together both computational methods developers and users interested in

Do Wyckoff positions exhaust the atomic positions in a crystal?

2008-05-22T05:00:38Z

Hi, I don't know much about crystallography but I'm curious about
whether the Wyckoff positions exhaust all possible positions that atoms
can occupy in a crystal. I'm interested in this because I'm considering
attempting to predict a crystal structure of a particular element that
I'm working on.

Laser converting Crystals

2008-05-19T03:26:05Z

Does anyone have access to any light converting crystals
I used to have one for converting a CO2 laser to visible blue
bout have lost it. Or anyone knowledge of where to buy some
more in any color spectrum???

Re: Calculate bond lenths from cif

2008-05-15T13:41:15Z

Kees Goubitz schrieb:
I haven't used PLATON with cif as input file yet. Now I know that it
automatically calculates the esd's when a cif file is given. Thanks a lot.
Cheers
Gotthelf