Joanne

If you can get S/S M8 bolts with the thread all the way up the shank 
(actually are screws) then so much the better. This avoids "bottoming" 
problems which can end up with vacuum leaks and/or stripping the thread 
in the housing. We had this problem on our MAT253.

John Hill
UCL


PETERKIN J.L. wrote:
> Dear List members,
> 
>  
> 
> We need to replace the bolts on the ion-source housing unit for our 
> Finnigan MAT 253 but we are having trouble finding a supplier other than 
> Thermo.
> 
>  
> 
> The bolts are stainless steel A4/70, hexagonal head, dimensions: M8 X 35mm.
> 
>  
> 
> Does anyone have any suggestions as to where we can get hold of such 
> bolts (preferably within the UK),
> 
>  
> 
> We have managed to source a close match, the only difference being that 
> the threads extend up to the full length of the shank, would these be ok 
> to use?
> 
>  
> 
> Any suggestions or comments will be very much appreciated.
> 
>  
> 
>  
> 
> Joanne Peterkin
> 
> Research Technician
> 
> Earth Sciences Department
> 
> Durham University
> 
> Stockton Road
> 
> DH1 3LE
> 
>  
> 
>  
> 
>  
> 
>  
> 
> ------------------------------------------------------------------------
> 
> *From:* Stable Isotope Geochemistry [mailto:[log in to unmask]] *On 
> Behalf Of *Matthias Cuntz
> *Sent:* 11 May 2009 17:09
> *To:* [log in to unmask]
> *Subject:* [ISOGEOCHEM] PhD position in SVAT modelling at UFZ Leipzig, 
> Germany
> 
>  
> 
> Sorry for crossposting.
> 
> 
> The Department Computational Hydrosystems invites applications for a
> 
> PhD position (f/m)
> 
> to work on the interface between soil, hydrology, vegetation and the 
> atmosphere within the framework of the Helmholtz Climate Initiative. The 
> UFZ contribution to the initiative aims at developing land surface 
> process models and parameterizations to improve regional (climate) models.
> 
> Background
> The terrestrial biosphere is one of the major drivers of inter-annual 
> variability in regional climate models. But descriptions of the land 
> surface are rather simple in the models. However, complex descriptions 
> of the soil-vegetation-atmosphere exchanges are not suitable for climate 
> models, yet.
> 
> Objectives
> In collaboration within the Climate Initiative, the successful candidate 
> will work firstly on the improvement of soil-vegetation-atmosphere 
> transfer (SVAT) models and secondly on the reduction of SVAT models to 
> formulations suitable for larger-scale models. This will integrate a 
> variety of process modules existing in the department such as a 
> physically based soil-root-shoot water flow model or a meso-scale 
> hydrological model.
> 
> Requirements
> We seek a highly motivated creative person with a strong interest in 
> interdisciplinary research and capability to work with a larger research 
> group. Candidates should have a master (Diplom or equivalent) in the 
> area of natural sciences, e.g. Physics, Hydrology or Biology. They 
> should have very good programming skills and a good knowledge of 
> English. We provide excellent supervision in a young dynamic team.
> 
> The place of work is Leipzig, Germany. Salary will be according to the 
> appropriate civil service level TVÖD (E 13/2). Physically handicapped 
> persons will be favoured if they are equally qualified. Women are 
> explicitly encouraged to apply in order to increase their share in 
> science and research.
> 
> Recruitment advertising of the UFZ take place in the internet 
> under: www.ufz.de <http://www.ufz.de/>
> For further information:
> Dr. Matthias Cuntz, Tel.: +49 (0)341 235 1877, 
> e-mail: [log in to unmask] <mailto:[log in to unmask]> or
> Prof. Dr. Sabine Attinger, +49 (0)341 235 1250, 
> e-mail: [log in to unmask] <mailto:[log in to unmask]>
> 
>  
> 
>  
>