Newsgroup sci.engr.chem 17467

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> >                         Dear Colleagues!
> >    We would be very much obliged if you could acknoweledge us about any
> >   Research Groups wich have been carring out the programme relating to
> >   the investigation of structure-activity relationship in the interaction
> >   between human organism and drug/xenobiotics.
> >   We are especially interested in some data on Computer Systems applica-
> >   tion for such a kind of research.
> >     Thanking you beforehand for your cooperation.
> >
>

Hi,
    I am looking for manufacturers of the following chemicals :
	* Propanil 
	* Phenmedipham 
	* Chlorpropham 
	* Isoprotroun
   If you are able to supply any of these chemcials, please reply with the
quantity that you can supply.

We're all familiar with the textbook problem of axisymmetric flow impinging on a flat plate
under laminar, non-creeping flow conditions.  (Schlichting's Boundary Layer Theory presents
the solution).  
Is anyone aware of an analogous, analytical solution for axisymmetric flow impinging on a shape comparable
to the convex side of a "Mexican hat?"   We have such a flow problem.  I'm aware that simulations could 
handle this, but any approximate, analytical solution would be much more presentable to management
types.
To clarify the shape, it is axisymmetric, and has a convex hump in the center.  For values of the cylindrical
radial coordinate OUTSIDE the hump, as this radial coordinate
increases, the surface begins to curve upward.
Any help you can offer is appreciated.
Steve Galante

In the thread
Re: Chemical Engineers and Computer Science
a question:
Ok, we often resort to spreadsheets/spreadsheets+extensions
to handle calculations not in the standard simulators
or too simple to make learning an enormou$ $imulator
worth the effort.
Can any of you recommend books (w/examples) that would help 
me learn to set up a simple flowsheet with a nonlinear
reactor model and solve it using one of the standard
spreadsheets?
Please answer via email and I will post a summary -- we
don't need any more advertisements in this group than
we already have.
thanks,
Ben
ba22@andrew.cmu.edu