KEV: Constant Evaluator

Online optimiser of the equilibrium constants of the chemical reactions · log in · sign up

KEV is a chemical software developed for solving two classes of problems of the chemical equilibria theory. It is free, open source and available both as an online service and scripts bundle. More about KEV...


News & Version History

TODO & Work in progress

 
  • More curves and presets in Curve fitting
  • Simulations
  • Kinetic chemical problems

V.0.5.0

2020-03-14

New in the math & data

  • Equilibrium constants via calorimetry data
    • Inverse problem of the chemical equilibria theory
    • Calorimetry method added

V.0.4.1

2019-11-17

Engineering release

  • Code refactoring
  • Multiple bugfixes

V.0.4.0

2019-07-21

New in the math & data

  • Interactive curve fitting
    • General spectral processing
    • Initial guesses for UV-Vis and IR spectroscopy
    • Precise and robust approaches using the different algorithms (gradient and gradient free ones)

New in the user interfaces

  • Interactive curve fitting
    • Control the proccess via table input data or GUI mouse click interface

V.0.3.0

2019-03-30

New in the math & data

  • Equilibrium constants via NMR data (fast exchange)
    • Inverse problem of the chemical equilibria theory
    • NMR (fast exchange) method added

V.0.2.0

Feb 2019

New in the math & data

  • Equilibrium constants via UV-Vis spectrophotometry and potentiometry (E.M.F.) data
    • Inverse problem of the chemical equilibria theory
    • UV-Vis spectrophotometry and potentiometry methods
    • 2 or more constants could be tuned simultaneously (check the guide for details)
    • Statistical tests included (significance, sensitivity etc.)
  • Equilibrium Concentrations: pC range calculation added

New in the user interfaces

  • Diagnostic plots
  • Sample data / examples

V.0.1.0

Sep 2018

New in the math & data

  • Equilibrium concentrations: direct problem
    • Direct problem of the chemical equilibria theory
    • Two interfaces: GUI web service and R scripts for experienced users
    • Reliable algorithm (Brinkley method + Newton solver), transparent implementation
    • Plain and simple input and output (CSV / Excel files only, without any obscure data formats)

New in the user interfaces

  • R script bundle
  • GUI web service

Contact us

Sign up

To get the free access to KEV send us an email, and you recieve the login and the password in less than one day (and possibly in minutes). Just use "KEV" as a subject and something like "Hi, Aleksandr / Georgiy, please give me access to KEV app. [Your name]" as a content.

Authors

Dr. Georgiy Gamov · Chemistry and Maths · ggamov@isuct.ru
Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and technology, Ivanovo

Dr. Aleksandr Meshkov · Data Science and Development · ameshkoff@protonmail.com