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Subject: NMR postdoc position -- From: Bridget.Mabbutt@mq.edu.au
Subject: Re: Any Internet pages about Magnetic Resonance? -- From: bild@rfa.mas.lu.se
Subject: Zero-order phase -- From: Ib Therkelsen
Subject: Re: Zero-order phase -- From: Klaus.Eichele@Dal.Ca (Klaus Eichele)

Articles

Subject: NMR postdoc position
From: Bridget.Mabbutt@mq.edu.au
Date: 12 Jan 1997 16:51:43 -0800
The following position will shortly be advertised:
MUCAB Protein Structure Group
School of Chemistry
Macquarie University, Sydney, Australia
Protein NMR Spectroscopist
Salary:  Research Associate ($38,092 - 40,889, subject to approval) 
A two-year postdoctoral position is available immediately to determine 
the NMR structure of various proteins within the Protein Structure 
Group at Macquarie University, Sydney.  The successful applicant will 
primarily work to define a protein fold thought to be representative 
of a new family of cell-cell adhesion molecules.  Spectra obtained to 
date on this surface glycoprotein (MW=15kDa) are of very high quality 
(Zachara et al., Eur. J. Biochem. 238, 511-518, 1996) and milligram 
quantities of the 15N-labelled recombinant protein are routinely 
prepared in this laboratory.
The Protein Structure Group is focussed on several proteins involved 
in cellular adhesion and regulation.  It is staffed by a 
multidisciplinary team encompassing molecular biology, protein 
expression and NMR structure determination.  We are a component of the 
Macquarie University Centre for Analytical Biotechnology, and are 
closely associated with the Australian Proteome Analysis Facility, 
which together form the major centre for protein research in the 
Sydney region.  The Group is also part of IBiS (Initiative in 
Biomolecular Structure), a multidisciplinary forum addressing NMR, 
crystallography and computer techniques in structural biology.
A new 600 MHz NMR spectrometer will be installed in the School of 
Chemistry in 1997.  In the interim, generous access to a DMX-600 
spectrometer (with pulse-field gradient capability) is available 
nearby at the University of New South Wales.  Other resources include 
state-of-the art protein purification and analysis equipment,  and a 
cluster of dedicated Silicon Graphics workstations.  
Applicants should have a Ph.D. in Chemistry, Biochemistry or related 
field.  Experience in the recording and analysis of heteronuclear 
multidimensional NMR spectra of proteins is essential, as is 
familiarity with UNIX and NMR processing packages.
Appointment is available immediately, initially until December 1997, 
and is renewable subject to grant funding.  Applications will close 
early February 1997.   
For further information concerning applications contact:
Dr Bridget Mabbutt, School of Chemistry, 
email: bridget.mabbutt@mq.edu.au, 
telephone:  (61 2) 9850 8282, 
fax: (61 2) 9850 8313
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Subject: Re: Any Internet pages about Magnetic Resonance?
From: bild@rfa.mas.lu.se
Date: Mon, 13 Jan 97 15:07:35 GMT
Hi there!
If it is MRI you are interested in, take a look at
http://www.sparta.lu.se/~jonas/MR.html
I intended to make a MRI page a while ago and collected the links you'll find 
there.
Some of the links might be a bit old though, but it is worth a try...
/jonas
jonas.svensson@rfa.mas.lu.se
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Subject: Zero-order phase
From: Ib Therkelsen
Date: Mon, 13 Jan 1997 13:16:37 +0100
Does anyone know the mathematical details of automatic zero-order phase
correction of NMR-spectra ?
-- 
Ib Therkelsen
Copenhagen, Denmark
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Subject: Re: Zero-order phase
From: Klaus.Eichele@Dal.Ca (Klaus Eichele)
Date: Mon, 13 Jan 1997 23:14:46 GMT
Ib Therkelsen  wrote:
>Does anyone know the mathematical details of automatic zero-order phase
>correction of NMR-spectra ?
>-- 
>Ib Therkelsen
>Copenhagen, Denmark
Hi,
there are probably different approaches.  If I had to do it, however,
I would start playing with the so-called DISPA plots (dispersion vs.
absorption).  For a properly phased and normalized peak of Lorentzian
shape, this gives a circle of diameter 1.0 centered at x = 0.5, y = 0.
Any phase twist will rotate this circle about the origin (i.e. the
angle between the center of the circle and the x axis should give the
required phase angle).
See for example:
Alan G. Marshall, Francis R. Verdun, "Fourier Transforms in NMR,
Optical, and Mass Spectrometry", Elsevier, 1990, p.53 ff.
Good luck, Klaus
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Klaus Eichele         keichele@is.dal.ca  
http://is.dal.ca/~keichele/keichele.html
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