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From: "Hodgkin, Ed" <HODGKINE@prince.mm.wyeth.com>
Subject: Van Der Waals Collapse
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From: Hodgkin, Ed
Date: Fri, Sep 2, 1994 9:30 AM
Subject: Van Der Waals Collapse
To: chemistry@ccl.net
Dear All

It is well known that molecular mechanics force fields favour 'folded' 
conformations which derive stability from large Van Der Waals terms. One could 
coin the phrase "Van Der Waals Collapse" to describe this effect. However I am 
not aware of any published work which addresses this issue. Are there any 
methods which compensate for the folding effect, thereby giving lower energies 
for extended conformations which are probably more relevant for molecules in 
solution or in binding sites.

I'll summarize the replies, of course.

Edward Hodgkin
Wyeth Research (UK)
E-mail: hodgkine@prince.mm.wyeth.com



From states@ibc.wustl.edu  Fri Sep  2 08:19:16 1994
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From: states@ibc.wustl.edu (David J. States)
Message-Id: <199409021219.HAA11032@ibc.WUStL.EDU>
To: HODGKINE@prince.mm.wyeth.com, chemistry@ccl.net
Subject: Re: CCL:Van Der Waals Collapse
Content-Length: 928


|> From: Hodgkin, Ed
|> 
|> It is well known that molecular mechanics force fields favour 'folded' 
|> conformations which derive stability from large Van Der Waals terms. 
|> One could coin the phrase "Van Der Waals Collapse" to describe this 
|> effect....

>From the earliest days of charmm development, this has been a concern.
Globular proteins simulated in vacuo shrink when "true" atomic radii
are used as the basis for nonbonded interaction parameters.
Swaminathan spent alot of time working on a compensating force term,
but I don't know what became of the work.  The most direct way to
control for the self-association of peptide chains is to do a
simulation that includes solvation explicitly.  Note that if you do
this as a water droplet rather than a periodic box the internal
pressure generated by surface tension is enormous so the system will
still collapse some compared to physiologic conditions.

David States

From xiang@nemesis.rose.brandeis.edu  Fri Sep  2 09:43:08 1994
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Date: Fri, 2 Sep 94 09:19:24 -0400
From: xiang@nemesis.rose.brandeis.edu (Phil Xiang)
Message-Id: <9409021319.AA21948@nemesis.rose.brandeis.edu>
To: CHEMISTRY@ccl.net
Subject: CCL:user groups for MSI and TRIPOS



Dear netters:

Do discussion groups for MSI and TRIPOS users exist?


Phil Xiang
Brandeis University



From lsaw00@risque.chem.rochester.edu  Fri Sep  2 09:49:26 1994
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Message-Id: <9409021333.AA15678@risque.chem.rochester.edu>
To: CHEMISTRY@ccl.net
Subject: ignature


The subroutine TRED2 in "Numerical Recipes" by Press et al.(p. 355) is used
to reduce a hessian matrix to tridiagonal form prior to diagonalization.  Has
anyone had any experience using this routine(the so called Householder method)?
It does not seem to generate the orthogonal Q matrix properly(the accumulated
matrix that reduces the hessian to tridiagonal form).  There appears to be
a bug in the routine but I haven't been able to find it. Help from anyone
who is familiar with this routine would be appreciated.

From epw@ppco.com  Fri Sep  2 09:50:33 1994
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From: epw@ppco.com (Dr. Eric P. Wallis)
Subject: Young Scientist Network address
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Dear netters:
I am looking for the address of the Young Scientist Bulletinboard (Network) 
and instructions on how to subscribe.  Any help would be appreciated.
Eric-


***************************************************************
* Dr. Eric P. Wallis                                          *
* Computational Chemistry                                     *
* Phillips Petroleum Company       Office  (918)-661-7956     *
* 331A PL PRC                      FAX:    (918) 662-1097     *
* Bartlesville, OK 74004           email:   epw@ppco.com      *
***************************************************************


From LONCHARICH_RICHARD_J@Lilly.com  Fri Sep  2 09:51:23 1994
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Date: Fri, 02 Sep 1994 08:31:15 -0500 (EST)
From: Rick Loncharich <LONCHARICH_RICHARD_J@Lilly.com>
Subject: CCL: VDW collapse
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|> From: Hodgkin, Ed
|> 
|> It is well known that molecular mechanics force fields favour 'folded' 
|> conformations which derive stability from large Van Der Waals terms. 
|> One could coin the phrase "Van Der Waals Collapse" to describe this 
|> effect....

|> From: David States
|> . . .  The most direct way to
|> control for the self-association of peptide chains is to do a
|> simulation that includes solvation explicitly.  Note that if you do
|> this as a water droplet rather than a periodic box the internal
|> pressure generated by surface tension is enormous so the system will
|> still collapse some compared to physiologic conditions.

Furthermore, as one increases the amount of water in a water droplet 
simulation from 0 to 4000 water molecules the size of the protein 
(measured by rgyr) increases to the X-ray radius of gyration.  See
recent articles by B.R. Brooks et. al.

Rick Loncharich
Eli Lilly and Company

From: LONCHARICH RICHARD J          (MCVAX0::RX82788)

To:   FOREIGN TRANSPORT ADDRESSEE   (MCDEV1::IN%"chemistry@ccl.net")

From nauss@ucmod2.che.uc.EDU  Fri Sep  2 09:52:30 1994
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Date: Fri, 02 Sep 1994 09:11:17 -0400
From: nauss@ucmod2.che.uc.EDU (Jeffrey L. Nauss)
Subject: Re:  CCL:Van Der Waals Collapse
To: CHEMISTRY@ccl.net
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>From: states@ibc.wustl.edu (David J. States)

>|> From: Hodgkin, Ed
>|> 
>|> It is well known that molecular mechanics force fields favour 'folded' 
>|> conformations which derive stability from large Van Der Waals terms. 
>|> One could coin the phrase "Van Der Waals Collapse" to describe this 
>|> effect....
>
>From the earliest days of charmm development, this has been a concern.
>Globular proteins simulated in vacuo shrink when "true" atomic radii
>are used as the basis for nonbonded interaction parameters...
>The most direct way to
>control for the self-association of peptide chains is to do a
>simulation that includes solvation explicitly.

I observed this phenomenon when I was running CHARMM a couple years
ago.  However, it does not appear to be a major problem with Biosym's
Discover using the CVFF forcefield.  I emphasis the word major as I do
observe some collapse of proteins and peptides but never to the extent
that CHARMM produced.

Anyone have any comments on the difference between the two forcefields
and this "Van Der Waals Collapse?"  Is anything similar observed with
AMBER or GROMOS?


						Jeff Nauss

****************************************************************************
*  UU    UU             Jeffrey L. Nauss, PhD                              *
*  UU    UU             Director, Molecular Modeling Services              *
*  UU    UU             Department of Chemistry                            *
*  UU    UU CCCCCCC     University of Cincinnati                           *
*   UU  UU CCCCCCCC     Cincinnati, OH 45221-0172                          *
*    UUUU CC                                                               *
*         CC            Telephone: 513-556-0148    Fax: 513-556-9239       *
*         CC                                                               *
*          CCCCCCCC     e-mail: nauss@ucmod2.che.uc.edu                    *
*           CCCCCCC                                                        *
****************************************************************************


From A09039@VM.CC.METU.EDU.TR  Fri Sep  2 10:43:10 1994
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Date:         Fri, 02 Sep 94 17:13:39 TUR
From: hasan karaaslan <A09039@vm.cc.metu.edu.tr>
Subject:      XView installation on SGI
To: chemistry@ccl.net


Hello everybody,

I have a problem with the installation of xview3 on SGI Indigo (IRIX 4.0.5)
I have the following files from

          swedishchef.lerc.nasa.gov:  [139.88.54.33]
          /libraries/xview3


files:

  xview3-sgi-patch.tar.Z
  libxview.a
  libolgx.a


I need some help, to install the xview3 without any damage to my
system...

All helps appreciated...

please send your comments to a09039@vm.cc.metu.edu.tr
   or                        hasan@indigo.chem.metu.edu.tr

thanks

From toni@athe.wustl.edu  Fri Sep  2 10:59:47 1994
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From: toni@athe.wustl.edu (Toni Kazic)
Message-Id: <199409021459.JAA04175@athe.WUStL.EDU>
To: CHEMISTRY@ccl.net
Subject: Dorothy Hodgkin died
Cc: pm@mrc-lmb.cam.ac.uk



Hello,

I thought readers of this list would be interested to know that Dorothy Hodgkin, an
eminent crystallographer and generally outstanding human being, died on approximately July
29th.  Apart from the intrinsic merit and beauty of the structures she determined (mostly
compounds of biochemical interest), her repeated findings of structures thought
theoretically impossible helped significantly to push chemistry forward.

Max Perutz' obituary of her for the Independent Newspaper (London), was posted to
bionet.xtallography by Paul McLaughlin (article 947).  He has graciously agreed to ask Max
if it may be posted here, but in the meantime you might want to have a look at it there.


Toni Kazic
Institute for Biomedical Computing
Washington University

From heather@ramana.chem.yale.edu  Fri Sep  2 11:44:23 1994
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From: Heather Carlson <heather@ramana.chem.yale.edu>
Message-Id: <9409021530.AA21462@ramana.chem.yale.edu>
To: chemistry@ccl.net
Subject: collapsing water droplets



Just another word on simulated water droplets (spherical caps)...

During a simulation of a 12 A radius cap, we observed the compression
previously mentioned on the net.  In order to obtain the same O-O
radial distribution function in a periodic cell, we have to set the
NPT ensemble to 1500 atm.  I realize this isn't addressing the vdw
collapse, but since droplet compression was mentioned, I figured it 
would be of interest since adding an extra factor of compressiomn
would be counter-productive.

Heather Carlson
heather@ramana.chem.yale.edu


From SHAUN@jason.uthct.edu  Fri Sep  2 11:58:29 1994
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Date: Fri, 2 Sep 1994 10:11:38 -0500 (CDT)
From: "Shaun D. Black" <SHAUN@jason.uthct.edu>
To: chemistry@ccl.net
Message-Id: <940902101138.8395@jason.uthct.edu>
Subject: Re: CCL:Young Scientist Network address


Dr. Eric Wallis writes:

> Dear netters:
> I am looking for the address of the Young Scientist Bulletinboard (Network) 
> and instructions on how to subscribe.  Any help would be appreciated.
> Eric-
> 
(stuff deleted)

The address for the Young Scientist Network (YSN) has changed recently and
is, for subscriptions:

     ysnadm@crow-t-robot.stanford.edu

Send the message:

     subscribe YSN    (if you want to receive the full YSN digest each day)
     subscribe MYSN   (if you want to receive the moderated YSN abou weekly)

(you can subscribe to either or both if you like)


The header of each digest contains all the e-mail addresses for posting,
archives, advisors group, WWW server, Gopher, etc.

Bye for now, and I hope this helps.  Contact me if you have any problems with
this.  Best regards,  Shaun  (shaun@jason.uthct.edu)


From yama@mol.biol.ethz.ch  Fri Sep  2 12:17:02 1994
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To: xiang@nemesis.rose.brandeis.edu, CHEMISTRY@ccl.net
Subject: Re: CCL:user groups for MSI and TRIPOS



Hi Phil,

for MSI or to be more precise for CHARMM there is

charmm-bbs-request@emperor.harvard.edu

and for TRIPOS or SYBYL there is

sybylreq@quant.chem.rpi.edu

to join send them a subscribe mail.

Information about modelin mail-exploders are listet in every
Reviews in Computational Chemistry
in the Appendix: Compendium of Software for Molecular Modeling.


Una volta aperto, conservare in frigo!


					  bap-man

 __________________________________________________________________________

 Bernhard A. Pabsch                                   yama@mol.biol.ethz.ch
 Laboratorium fuer organische Chemie                 MOM_10@CZHETH5A.bitnet
 ETH Hoenggerberg (HPM G32)                           Tel. ++41 1 633 34 89
 CH-8093 Zuerich/Switzerland                          Fax  ++41 1 372 00 53
 __________________________________________________________________________

From sling@euclid.chem.washington.edu  Fri Sep  2 12:43:09 1994
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From: sling@euclid.chem.washington.edu (Song Ling)
Message-Id: <9409021621.AA20824@euclid.chem.washington.edu>
To: chemistry@ccl.net
Subject: Young Scientists' Network



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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From IRIKURA@ENH.NIST.GOV  Fri Sep  2 13:43:12 1994
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From: <IRIKURA@ENH.NIST.GOV>
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 <01HGMYK8V1TS006LAC@ENH.NIST.GOV>; Fri, 2 Sep 1994 12:58:09 EDT
Date: Fri, 02 Sep 1994 12:58:08 -0400 (EDT)
Subject: Ab initio spin-orbit codes?
To: chemistry@ccl.net
Message-id: <01HGMYK8WNPE006LAC@ENH.NIST.GOV>
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Is there a publicly-available (commercial or otherwise) ab initio program that
can cope with spin-orbit coupling/splitting?  For example, linear 2-Pi
molecules. 

Thanks for any help--I'll post a summary of responses.

Karl 

----------------------------------------------
Dr. Karl Irikura
Chemical Kinetics and Thermodynamics Division
National Institute of Standards and Technology
Gaithersburg, MD  20899
----------------------------------------------

From zhu@Homer.PHYS.UH.EDU  Fri Sep  2 14:43:13 1994
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From: Wie Zhu <zhu@Homer.PHYS.UH.EDU>
Message-Id: <199409021802.AA07926@Homer.PHYS.UH.EDU>
Subject: 2D or 3D FFT code?
To: chemistry@ccl.net
Date: Fri, 2 Sep 94 13:02:27 CDT
X-Mailer: ELM [version 2.3 PL11]


Dear Netters,

Could someone tell me where to get the 2D/3D-FFT 
(similar to CFFT2D on Cray) source code?

Thanks for any information.

zhu@homer.phys.uh.edu

From mjf@iris120.biosym.com  Fri Sep  2 14:55:40 1994
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Date: Fri, 2 Sep 94 09:45:41 -0700
From: mjf@biosym.com (Mark J Forster )
Message-Id: <9409021645.AA09777@iris120.biosym.com>
To: chemistry@ccl.net
Subject: Routine TRED2



In response to 
> TRED2 in "Numerical Recipes"...
> ...Has anyone had any experience using this routine

Numerical recipes is available in C, FORTRAN, PASCAL even BASIC versions,
which are you referring to ? Is only one version buggy or are they all ? 

I have previously used the C language TRED2/TQLI routines and performed 
a comparison with the Jacobi algorithm for diagonalizing a real symmetric
matrix. I found the former to give the same results but to be 2-3 times
quicker.

Hope this helps.


Best Wishes       __________________________________________________________
Mark             /
         ___    /                     
        /  /|  /                     Mark J Forster
       /  / | /                     Biosym Technologies Inc, 
      /__/__|/     \__O_/          9685 Scranton Rd, 
     /__/             |           San Diego, CA 92121, USA.
    /   |            /|          Tel: (619) 458 9990
   /  o |<--------  / |         FAX: (619) 458 0136
  /__ __|                      e-mail: mjf@biosym.com
       /                      Follower of Manchester United FC.   
      /                      FA cup winners 1990,  
     /     European cup winners cup winners 1991, League cup winners 1992, 
    /     FA Premier League champions 1993, FA charity shield winners 1993/4.
   /     FA Premier League champions AND FA cup winners 1994.   
  /     FA Charity shield winners 1994/5
 /________________________________________________________________

*******************************************************************************
* DISCLAIMER: Unless indicated otherwise, everything in this note is          *
* personal opinion, not an official statement of Biosym Technologies, Inc.    *
*******************************************************************************


From ashy@rose.chem.wesleyan.edu  Fri Sep  2 15:43:13 1994
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From: Ashwin Dinakar<ashy@rose.chem.wesleyan.edu>
To: xiang@nemesis.rose.brandeis.edu
Cc: CHEMISTRY@ccl.net
In-Reply-To: <9409021319.AA21948@nemesis.rose.brandeis.edu> (xiang@nemesis.rose.brandeis.edu)
Subject: Re: CCL:user groups for MSI and TRIPOS


 Hi !
     Iam interested in discussing about CHARMm and QUANTA and some of the
problems I have encountered using the above programs. I was wondering
whether anyone else would be interested.
                  Ashwin Dinakar,
                  Wesleyan University.

From psubram@texaco.com  Fri Sep  2 15:50:44 1994
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Date: Fri, 2 Sep 94 13:34:04 CDT
From: psubram@texaco.com (Palavo Subramanian)
Message-Id: <9409021834.AA16704@texaco.com>
To: chemistry@ccl.net
Subject: Monolayer modeling


  I am looking for information on modeling monolayer formation. I am 
mainly intersted in the monolayer formed from a polymer(s) in 
solvent(s).
  Any suggestions, references will be greatly appreciated. I will
summarize the results.
  Thanks ,

P.S.Subramanian
psubram@texaco.com

From bear@ellington.pharm.arizona.edu  Fri Sep  2 16:43:13 1994
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Date: Fri, 2 Sep 94 12:29:26 -0700
From: bear@ellington.pharm.arizona.edu (Soaring Bear)
Message-Id: <9409021929.AA27292@ellington.pharm.arizona.edu>
To: chemistry@ccl.net
Subject: CCL:Van Der Waals Collapse



|> From: Hodgkin, Ed
|> force fields favour 'folded' conformations

|> From: David States
|> most direct way to control for the self-association
|> of peptide chains is to do a simulation that includes 
|> solvation explicitly...

|> From: Jeff Nauss
|>Is anything similar observed with AMBER...

	In my work with solvated DNA under AMBER dynamics with
periodic boundary, water does NOT stop collapse.

bear
 
* UU  UU                SOARING BEAR                   *
* UU  UU          Computer Aided Drug Design           *
* UU  UU A   University of Arizona, New Pharmacy 404   *
*  UUUU AAA    Tucson, AZ 85721       602-626-6133     *
*      AA AA         where the sun shines              *
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*    AA     AA e-mail:bear@ellington.pharm.arizona.edu *


From jesus@canarylab.chem.nyu.edu  Fri Sep  2 16:49:38 1994
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Date: Fri, 02 Sep 1994 15:45:57 -0400
From: jesus@canarylab.chem.nyu.edu (Jesus M. Castagnetto Mizuaray)
Subject: Summary: PD EHT packages
To: CHEMISTRY@ccl.net
Message-id: <9409021945.AA29869@canarylab.chem.nyu.edu>
Content-transfer-encoding: 7BIT


This is the summary of repsonses to my query on PD EHT software.
I couldn't send it before because I am writing my Thesis Research
Proposal. I'll respond to all who answered. For what it seems we
are going to stick with CACAO at least for now, because we are in
process of upgrading our systems and connections. But we seriously
will consider using the QCMP #116 QCPE package, as soon as things
get settle down (hardware-wise) around here. Thanks for the help/tips
to compile/use forticon in a SGI machine, and thosw who gave more
info about CACAO, and thanks to Leif Laaksonen for his offer of a
modified version of FORTICON8.
Hope this helps somebody else.
Greetings

P.S. The answers have been stripped of non-esential to save bandwith.
     My apologies to all who were confused my signature. In my country
     of origin (Peru) we use the father's and mother's last name ;-)

*** Initial query
> Mon Aug 29 05:52:31 1994
> Hello all. Does anybody know about any PD EHT program (or programs)
> for Unix. I got CACAO from the CCL server, but would prefer to have
> something running in our Indigo, because transfering data to a PC
> is not an easy task, because of the way the machines are connected
> Also found in the CCL archives: forticon8.f, but no documentation
> except the one in the program, but for what I can see it was written
> with a VAX in mind.
> Thanks in advance for any lead/hint/idea. I prefer to receive info
> to my mailbox (below), I'll summarize to the list as soon as I got
> some answers.
> Greetings.

*** From braendle@solar.iac.unibe.ch (Martin Braendle)
> Date: Mon, 29 Aug 1994 11:54:44 +0200 (DFT)
> Subject: Re: CCL:PD EHT software?
>
> Dear Dr. Mizuaray
> 
> An extended-Hueckel package called ICONC&INPUTC, which should be easily portable
> to UNIX, is available at QCPE (QCMP #116), including sources and manual. It in-
> volves FMO, a modified distance-dependent Wolfsberg-Helmholz approximation, and
> an electrostatic core-core repulsion term. We are running it under IBM RS/6000
> AIX 3.2.3, VMS and MS/DOS. For operating-system-specific implementation que-
> stions you may contact me.  
> 
> With kind regards
> 
> Martin Braendle
> 
> --------------------------------------------------------------------------------
> Martin Braendle, PhD, Institute for Inorganic and Physical Chemistry, 
> University of Berne, Freiestr. 3, CH-3012 Berne, Switzerland,
> Tel. ~41 31 631 42 25, Fax ~41 31 631 39 94, Email braendle@solar.iac.unibe.ch 
> --------------------------------------------------------------------------------

*** From: Leif Laaksonen <laaksone@csc.fi>
> Date: Mon, 29 Aug 1994 12:57:36 +0300 (EET DST)
> Subject: ICON8
> 
> Hi,
> 
> I have a modified version of FORTICON8 which I have enhanced:
> (1) Dynamic memory allocation through a small c-program
> (2) Number of atoms up to 5000 (eats horrible much of memory)
> (3) Understands the atom names used in protein modelling
> (4) Changed a bit of the output to satisfy my needs 
> (5) Produces the input to an molecular electrostatic potential
>     program VSS.
> (6) ICON8 runs on all Unix boxes.
> 
> If you want the code I can mail the stuff to you.
> Regards,
> 
> -leif laaksonen
> -------------------------------------------------------------------
> Leif Laaksonen                     |  
> Center for Scientific Computing    | Phone:      358 0 4572378
> P.O. Box 405                       | Telefax:    358 0 4572302 
> FIN-02101 Espoo                    | Voice Mail: 358 486257407
> FINLAND                            | Mail:  Leif.Laaksonen@csc.fi
> --------URL: http://www.csc.fi/lul/leif/leif.laaksonen.html--------
>               Who has seen the wind?
>               Neither you nor I:
>               But when the trees bow down their heads
>               The wind is passing by.
> 
>                                     Christina Rossetti
> -------------------------------------------------------------------

*** From: ascanio@salve3.salve.edu
> Date: Mon, 29 Aug 1994 09:27:40 EDT
> Subject: "The Last Word....."

> Jesus:
> 	1. Who publishes "The Last Word-The Ultimate Scientific
> 	   Dictionary"
> 	2. You can print CACAO*.HGL and MOAN1.HGL using a PC Graphics
> 	   Star NX10 and IBM 6-color Pen Plotter. You don't need the
> 	   Laser printers.
> 	3. Can't help you on your request for other EHT program.
> 
> 	Ciao
> 	Pacem in Calcio
>                                                      ///////////
>                                                        |/////|
>                                                        |  3  | 
> Ascanio Giuseppe DiPippo, C.H.S.,C.A.O.S. //////      / liter \
> Salve Regina University         ___        |//|     /           \
> Newport, Roe Dylin 02840     ___|  |__    /    \   |   et cum   |
> ascanio@salve3.salve.edu     |___  ___|  | H2O  |  |   spiriti  |
> 401-847-6650                    |  |     |      |  |    vini    |
> 41 30'N 71 20'W                 |__|     --------  --------------
> ****************************************************************
> * " Neva trusst n nee won whoo kan ownly spel a wird won whey" * 
> ******************** Mock Twane ********************************

*** From: SATYAM@vms.cis.pitt.edu
> Date: Mon, 29 Aug 1994 11:15:00 -0500 (EST)
> Subject: Re: CCL:PD EHT software?
> 
> Dear Mizuaray,
> The forticon8 will work on INDIGO..
> IMPORTANT... while compiling remember to give flag -static   i.e.
> f77 -static forticon8.f -o executable.file 
> 
> Have fun.
> Satyam

*** From: bowlus@palres.dnet.sandoz.com (Steve Bowlus)
> Date: Mon, 29 Aug 94 10:18:13 -0400
> Subject: EHT
> 
> I've used forticon on my ESV/4D35/Indigo2 without incident.  The conversion 
> from the VAX code is straightforward -- if I remember correctly, a few 
> things get changed to keep the compiler from complaining, but there was 
> nothing even a non-programmer (like myself) couldn't fix.
> 
> sb
> 
> ===========================================================================
>   Stephen B. Bowlus, Ph.D.                Computer-Aided Molecular Design 
>                                           Research Division
>   e-mail: bowlus@sandoz.com               Sandoz Agro, Inc.
>   Phone:  + 1 415 354 3904                975 California Ave.
>   Fax:    + 1 415 857 1125                Palo Alto, CA 94304
> ===========================================================================

*** From: slee@theochem.uwaterloo.ca (Tom Slee)
> Date: Mon, 29 Aug 94 21:57:15 -0400
> Subject: Re: CCL:PD EHT software?
> 
> I don't have any specific address for you, although most 
> Extended Huckel programs I've seen around have their origins
> in Roald Hoffmann's laboratory.  Really, I'm writing to point
> out that in order to get the most from Extended Huckel as a 
> method you need not only an EHT program (such as forticon),
> which produces the MO's etc., but also a program such as FMO
> (developed in Hoffmann's lab I believe), which allows you to
> construct the fragment interaction diagrams which make the 
> method  so useful.  Cacao is particularly attractive because
> it contains both programs.
> 
> 		Yours
> 
> 		Tom Slee

-----
    Jesus M. Castagnetto Mizuaray      | "Organic Chemistry: The practice
Dep.of Chemistry - New York University | of transmuting vile substances 
4 Washington Pl, Room 514. NY 10003    | into publications" (The Last Word-
    jesus@canarylab.chem.nyu.edu       | The Ultimate Scientific Dictionary)



From bobf@msi.com  Fri Sep  2 17:43:14 1994
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From: Bob Funchess <bobf@msi.com>
Date: Fri, 2 Sep 1994 17:03:34 -0400
Organization: Molecular Simulations Inc.
Phone: (617) 229-9800 ext. 202
To: CHEMISTRY@ccl.net
Subject: RE: CCL:user groups for MSI and TRIPOS


> Do discussion groups for MSI and TRIPOS users exist?

Molecular Simulations does maintain several mailing lists for its users.
I'll append a copy of the announcement document below describing how to
subscribe and some information about these lists.

      Regards,
             Bob Funchess

PS Some fonts do not sufficiently distinguish between the number "1" and
   the lowercase letter L.  All the lists below end with -L, not with -1.
   Commands sent to listproc are not case sensitive.

-------------------------------------------------------------------------
The MSI Scientific Support Bulletin Board mailing lists are
intended to provide an informal forum for users of MSI products
to discuss various aspects of the programs. The lists are NOT
designed to be an official channel for product support; all
requests for technical product support should continue to go
through the Scientific Support hotline or via e-mail to the
phone, fax, and e-mail addresses provided on this page.

There are currently three mailing lists generally available on
the MSI Scientific Support Bulletin Board which uses the
ListProcessor 6.0(c) software. The lists are:

QUANTA-L
(address: quanta-l@msi.com)
This list is for users of QUANTA and related programs (e.g.
ChemNote).  Discussion on CHARMm is also welcome here. (MSI is
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direct their request to charmm-bbs-sysop@emperor.harvard.edu).

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-- 
Dr. Robert B. Funchess                         Molecular Simulations Inc.
Senior Support Scientist                       16 New England Executive Park
bobf@msi.com                                   Burlington, MA 01803-5297
(617) 229-9800 x202                            FAX (617) 229-9899


From jgonda@kosice.upjs.sk  Fri Sep  2 18:43:13 1994
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Date: Fri, 2 Sep 1994 23:53:53 +0100 (WET DST)
From: "RNDr. Jozef Gonda" <jgonda@kosice.upjs.sk>
Subject: user groups for Gaussian 92 and GAMESS
To: CHEMISTRY@ccl.net
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   Dear netters,

   do discussion groups for Gaussian 92 and GAMESS user exists?


                                        Jozef Gonda
                                        Safarik University


