News

New version of ARKS FK is available 12.10.2025 19:02

The CISP team is pleased to announce the release of the long-awaited new, significantly improved version of the ARKS FK software. Key new features include:

1. A powerful Advanced Reactor Geometry mode has been developed, which provides a much more convenient, flexible and friendly reactor-oriented way of simulation. It allows you to select one of 4 types of reactor geometry and then automatically calculate all reactor parameters such as reactor volume and reactor material mass, reacting mixture mass, heat transfer surface (depending on reactor fill factor), temperature-dependent phi-factor.
2. The Simple Reactor Geometry mode is still available, which is the same concept as in previous versions of ARKS FK. This mode provides:

• full compatibility of v. 2 with projects created by previous versions;
• use of experimental data loaded in ARKS FK;
• convenient way of preparing a project for simulation under adiabatic conditions or in a Forced temperature mode - in both these cases, reactor design details are not required.

3. Two databases have been added to store reactor data  (see Vessel database)  and to manage material properties.
4. A significantly improved procedure for the initial estimation of the pre-exponent and activation energy which can be applied to models of any complexity and, in combination with a small manual adjustment of parameters, provides a good starting point for nonlinear optimization.

Visit Version history page to find more details.

New issue of the CISP Newsletter 17.10.2024 23:28

The next CISP Newsletter N 28 is now available. It continues discussion of various aspects of kinetic analysis. This time it is about some peculiarities of isoconversional kinetics that require special consideration.

Model-free (isovonversional) methods are extremely popular and often used, specifically in thermoanalytical studies, in particular because these methods are rather simple. However, they are not as simple as they seem and have their own limitations and complexities that often escape the attention of researchers. We address some of “hidden” complications that, if not taken into account, can lead to inaccuracies that render the resulting kinetics useless.

Such problems go unrecognized in many cases, because very often published results of kinetic analysis reflect the dependence of activation energy and (rarely) pre-exponent on conversion, but analysis of the quality of the description of experimental data is usually overlooked.

The discussion is illustrated by the examples prepared by ARKS FK and ARKS IK kinetic packages.

Wisit the CISP Newsletter page to download this issue.

New issues of the CISP Newsletters 22.09.2024 23:09

We continue publications of our CISP Newsletters. The folloving articles were issued recently:

N 21. Some thoughts about statistical evaluation of the results of kinetic analysis
N 22. Using DSC for Reaction Kinetics study. Some thoughts about planning experiments
N 23. A closer look at the ARKS HA Hazard Assessment Software
N 27. How to choose a formal model - some tips

 Visit the CISP Newsletters page to read and download them

New version of ARKS TE 16.09.2024 00:00

CISP team is glad to report that new, significantly enhanced version of ARKS TE (v.2)  has been released and is ready for downloading. Visit Version history page to find more detailes about this version.

One of the unique new features is the Validation mode, which is designed to select a more adequate kinetic model from several competing ones. The idea is based on comparison of simulated results with available data from explosive experiments according to one of several criteria. 

New version of ARKS TA 18.06.2024 00:00

CISP is pleased to announce the availability of the updated application ARKS TA v. 1.3.11
It contains minor but useful improvements to the procedures for determining and approximating heat capacity Cp(T).

1. Now it is possible to calculate Cp form DSC data preliminary corrected on the poistion of the experimental base line (blank).

2. The coefficients of the approximating polynomial are defined according to the temperature units chosen at the beginning of the approximation. That is, if you have chosen a temperature in degrees K, you will need to enter the temperature in K into the polynomial; the same is true for degrees Celsius

Новая версия программы ARKS TAr 17.06.2024 00:00

Компания CISP рада сообщить о выходе обновленного приложения ARKS TAr v. 1.3.11.
Оно содержит незначительные, но полезные улучшения в процедурах определения и аппроксимации теплоемкости Cp(T).

1. Теперь можно вычислять Cp по данным ДСК, предварительно скорректированным на положение экспериментальной базовой линии (бланка).

2. Коэффициенты аппроксимирующего полинома определяются в соответствии с единицами измерения температуры, выбранными в начале аппроксимации. То есть, если вы выбрали температуру в градусах К, то в полином нужно вводить температуру в К; то же самое справедливо для градусов Цельсия

3. Существенно переработана документация на программу

Refreshed list of publications of TSS-ARKS users 14.06.2024 12:23

After some delay, we have made available to the public a substantially updated list of  publications of TSS-ARKS users.  It now includes 97 titles with abstracts, so you can get a fairly clear idea of where CISP software has been successfully used and what useful results can be achieved.

Follow this link to see the list.

New issues of CISP Newsletters N 16v2, 24 and 25 12.03.2024 11:59

We've prepared and issued 3 CISP Newsletters - N 16v2, 24 and 25

CISP Newsletter N16v2 is actually an updated version of CISP Newsletter N16. It reflects the new
functionality of the ARKS TE v 2.0 which will be released shortly. Check the News page on the CISP website to stay up to date without delays.

CISP Newsletter N24 is somewhat unusual in that it is really the scientific report rather than a digest.
 The purpose of this report is to demonstrate in more detail the use of reaction calorimentry as a source of data for kinetic studies. It contains the results of  kinetics evaluation of the esterification reaction between  
methyl alcohol and acetic anhydride based on experimental data  from the Simular reaction calorimeter.

CISP Newsletter N25 continues to familiarise readers with the applications of the TSS ARKS software.  This time we present the ConvEx software package. It is the analog-free powerful CFD software for simulation of thermal explosion in reactive fluids. 

New version of ARKS TA software 24.02.2024 00:00

We are happy to announce the release of the new version ARKS TA 1.3.0. All the existing functions have been updated to provide more stable functioning, and several new useful features have been added, specifically:

• upgraded peak integration procedure which allows
  • separate integration of DSC and dTG peaks when working with the conmbined DSC - TG data
  • automatic determination of the onset and outset temperatures of a peak whith the possibility to choose manual determination of the onset for complex peaks
• new equal-area method for determining glass transition parameters when the enthalpy relaxation peak overlapps glass transition
• correction of TG data on the position of the experimental base line is added. This feature is especially important when zero drift of thermobalance is observed (e.g. for single-chamber thermobalance).

New pages of CISP site in Russian 16.10.2023 00:48

Приглашаем Российских специалистов посетить первые русскоязычные страницы нашего сайта.