CHEMPUTE SOFTWARE - APRIL 2000 NEWSLETTER 
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NEW SOFTWARE RELEASES 
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@RISK 4.0 
This Risk Analysis software can find equal usage in process 
plant operation, product pricing, stockmarket analysis, or in 
fact in any industry where risk can be simulated using Monte 
Carlo analysis. @Risk is an add-in for Excel or Lotus 1-2-3, 
(a separate module is available for MS Project), that takes 
existing spreadsheet models and adds uncertainty distributions 
to spreadsheet variables. Version 4 has just been released, 
and now includes RiskView, BestFit and RiskOptimizer. 
@Risk 4.0 Standard costs $495 + S&H, while the more comprehensive
Decision Tools Suite costs $995 + S&H and includes TopRank and
Precision Tree. For more information on @Risk, see the
description at www.chempute.com/risk.htm, or download the free 
demo from our download section. 

CHEMDRAW 6 
This popular Chemistry Drawing software has now been released as 
Version 6. New features include multiple page documents (e.g. 
8x6) which is useful for creating posters, stereochemistry 
views of tetrahedral atoms and double bonds, improved ChemNMR 
with correlation between selected atoms and line spectra, 
dashed geometric figures, shaded spline curves, and right- 
button contect menus. Chemdraw 6.0 has three versions: 
Standard ($595 + S&H), Pro ($995 + S&H), and Ultra ($1395 + S&H). 
The Ultra version includes ChemNMR and ChemProp. There is also 
the top of the range ChemOffice 6.0 Ultra which includes 
ChemDraw, Chem3D, ChemInfo, ChemFinder, ChemNMR, ChemACX, and 
Mopac97 and which costs $2395 + S&H. 

AFT FATHOM/IMPULSE 
IMPULSE is used for calculating waterhammer/surge transients in 
piping systems, based on a steady state network starting point 
which is calculated by FATHOM. The software uses the method of 
characteristics to solve the mass and momentum equations. This 
is useful for simulating valve closures/openings, pump startups 
and shutdowns, and relief valve cracking, to name a few. 
Impulse incorporates a model for vapour cavitation and liquid 
column separation so the effect of pressure surges due to vapour 
cavity collapse can be accurately modeled. A description and 
demo download can be found at http://www.aft.com/impulse.htm. 
These programs can be ordered directly from Chempute Software. 
Impulse+Fathom+Chempak Property Database = $4995 + S&H 

COMPRESS 6.3 Build 6101. Corrects printing problems and other 
items. Available for download from www.codeware.com 

CAESAR Ver 4.2. Build 000502. New build available for
download from www.coade.com/fcaesar.htm. Features include:
* Improvements to the new 3D graphics 
* Expanded and corrected material data base 
* Expanded ODBC data base reports 
* Corrections to the wave/current routines 
* Updated CADWorx valve/flange directories 

CODECALC 6.20 Build 000501. New build available from
www.coade.com/fcodecal.htm. Minor changes.

PVELITE 3.60 Build 000501. New build available from
www.coade.com/fpvelite.htm. Minor changes.


FREE SOFTWARE CORNER 
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>From Russia with Love !! 
Alexander Maikov from Moscow Engineering University has written
a shortcut distillation routine which can accessed online on the
web at http://www.com2com.ru/~maikov/todis/todisinp.htm.
The software is called TODIS and is limited to ideal solutions
and columns with one feed ( Full Fractionator), and up to 20
feed components from a databank of 480 components.
Both english and SI units are handled. The routines use
thermodynamic optimization methods to determine separation, and
compare well with rigourous multi-stage simulation. Use of the
calculator is free. 

THERMAL WIZARD 
This is a free online web calculator for calculation of heat 
conduction, convection, radiation and head loss coefficients. 
It also has unit conversion and material property tables. A 
great tool ! View this calculator at 
http://www.mayahtt.ca/tmwiz/default.htm 

FEEDBACK 
~~~~~~~~~ 
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software and on engineering topics in general, which you might 
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Best Regards 
Stuart Aitchison 
Chempute Software 
E-mail: sales@chempute.com 
WWW: http://www.chempute.com