After a busy autumn we now are ready to announce the PERCH NMR-software as
released. There are some major improvements regarding the user interface
(e.g. event driven input, MOUSE SUPPORT) within the PERCH programs.
The demo version on nic.funet.fi (in pub/sci/chem/nmr) is updated.
What is PERCH?
PERCH (PEak reseaRCH) is an integrated NMR-software package for research,
analytics and education. The spectral analysis and simulation up to 10 spins
is based on the program MLDC (Modified LAOCOON with Dipolar Couplings). MLDC
provides several iterative modes, including the traditional LAOCOON-type,
peak-top-fitting for accurate analysis in presence of line-overlap and a
total-line-shape mode, where no assignments are required. Additionally the
package offers some powerful tools to prepare the input data required by MLDC
and for research on 1D-NMR spectra in general, like:
- import of spectral NMR data from all major manufacturers,
- an effective packing utility to compress data by factors up to 20,
preserving the complete line-shape information of each single peak,
- an efficient peak-picking and peak-top interpolation based on
a line-shape and noise analysis (essential for precise spectral
analysis),
- a multi-term baseline correction (essential as well), smoothing and
averaging,
- a very fast deconvolution (a couple of minutes for fitting frequency,
intensity and line-width for each of 20 lines/1000 spectral points,
including a 4-term baseline correction) with total-line-shape fitting,
a graphical peak editing and constraints features for frequencies,
intensities, line-widths and integrals,
- a graphical assignment procedure for calculated and observed spectra
with automatic and manual modes. This is what you always have been
waiting for!
PERCH takes advantage of 32-bit code, is running on IBM/compatible PC (386/486)
and can be accessed from a graphical user interface under Windows or command
driven directly under DOS.
What is new?
The user interface within the PERCH-programs is improved by adding:
Cursor and function keys (incl. help key), short cuts without enter
confirmation, MOUSE SUPPORT, manual peak editor in peak picking and
deconvolution, constraint feature in deconvolution, improved baseline
and deconvolution routines, improved assignment procedure (cursor keys)
with an assignment evaluation and a history feature, a trouble shooting
feature and an extended printer routine in the PERCH shell. There is no
coprocessor needed anymore (of course PERCH runs faster with).
What do I need to download?
There are 2 archives, PERCH1.ZIP and PERCH2.ZIP. If you already have
downloaded the previous demo version, you need PERCH1.ZIP only.
Otherwise you need to download both archives. The archives were created
by PKZIP version 2.04g. You need this or a newer version to extract.
PKZIP is available via anonymous ftp (remember to retrieve in BINARY mode).
To run PERCH under Windows 3.1 you need VBRUN300.DLL (from nic.funet.fi in
/pub/msdos/windows/util/vbrun300.zip or from somewhere else).
Extract the archive(s) on your harddisk and follow the setup instructions
in README.TXT if you want to run PERCH under Windows.
For more information contact:
PERCH Project phone: + 358 71 163242
Department of Chemistry fax: + 358 71 163259
University of Kuopio, POB 1627 E-mail: perch@mesaani.uku.fi
SF-70211 Kuopio, FINLAND
Copyright 1993 PERCH Project, University of Kuopio, Finland.
All rights reserved.