Device for Obtaining Directly a Family of Kinetic Curves for Spectrophotometers with Consecutive Spectrum Scanning

1979 ◽  
pp. 743-749
Author(s):  
N. Koralov ◽  
I. Iliev ◽  
P. Dzhoneva ◽  
P. Shishmanov ◽  
J. G. Vassileva-Popova ◽  
...  
Keyword(s):  
Kinetic Curves

A method of comparing kinetic curves obtained under isothermal and nonisothermal conditions

1991 ◽  
Vol 177 ◽  
pp. 259-264 ◽  
Author(s):  
S.V. Vyazovkin ◽  
A.I. Lesnikovich ◽  
V.I. Goryachko
Keyword(s):  
Kinetic Curves ◽  
Nonisothermal Conditions

scholarly journals Dual kinetic curves in reversible electrochemical systems

PLoS ONE ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. e0173786 ◽  
Author(s):  
Michael J. Hankins ◽  
Gregory S. Yablonsky ◽  
István Z. Kiss
Keyword(s):  
Kinetic Curves ◽  
Electrochemical Systems

scholarly journals Application of Computer Simulation to Study the Features of the Austenite Isothermal Transformation in Steels

2019 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Yu.V. Yudin ◽  
M.V. Maisuradze ◽  
A.A. Kuklina ◽  
P.D. Lebedev
Keyword(s):  
Phase Transition ◽  
Computer Simulation ◽  
Solid State ◽  
Isothermal Transformation ◽  
Avrami Equation ◽  
Kinetic Curves ◽  
Simulation Results ◽  
Experimental Kinetics ◽  
Kinetics Of ◽  
New Phase

An algorithm was developed for the simulation of a phase transition in solid state whichmakes it possible to obtain the kinetic curves of transformation under different initialconditions (the number and arrangement of new phase nuclei, the distance betweenthe nearest nuclei). The simulation results were analyzed using the Kolmogorov-Johnson-Mehl-Avrami equation and the corresponding coefficients were determined.The correlation between the simulation results and the experimental kinetics of theaustenite isothermal transformation in alloyed steels was shown.

scholarly journals MODELING OF PPG SWELLING AND SHRINKAGE

2016 ◽  
pp. 72-74
Author(s):  
S. K. Sokhoshko ◽  
G. H. Ali
Keyword(s):  
Kinetic Curves ◽  
Selection Of

The aim of the work described was to develop a method for selection of a gel. This work involves studying the gel PPG swelling and shrinkage processes. The kinetic curves of PPG swelling and shrinkage in the brine of different concentration will be measured. The effect of the brine temperature and concentration will be analyzed.

Method for Processing Fluorescence Decay Kinetic Curves Using Data Mining Algorithms

2020 ◽  
Vol 87 (2) ◽  
pp. 333-344
Author(s):  
M. M. Yatskou ◽  
V. V. Skakun ◽  
V. V. Apanasovich
Keyword(s):  
Data Mining ◽  
Fluorescence Decay ◽  
Decay Kinetic ◽  
Kinetic Curves ◽  
Data Mining Algorithms ◽  
Using Data ◽  
Mining Algorithms

scholarly journals Extended Rate Constants Distribution (RCD) Model for Sorption in Heterogeneous Systems: 2. Importance of Diffusion Limitations for Sorption Kinetics on Cryogels in Batch

Gels ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 15 ◽  
Author(s):  
Irina Malakhova ◽  
Alexey Golikov ◽  
Yuliya Azarova ◽  
Svetlana Bratskaya
Keyword(s):  
Kinetic Parameters ◽  
Diffusion Model ◽  
Residence Time ◽  
Rate Constants ◽  
Heterogeneous Systems ◽  
Sorption Kinetics ◽  
Sorption Rate ◽  
Kinetic Curves ◽  
Dynamic Conditions ◽  
Diffusion Limitations

Here we address the problem of what we can expect from investigations of sorption kinetics on cryogel beads in batch. Does macroporosity of beads indeed help eliminate diffusion limitations under static sorption conditions? Are sorption rate constants calculated using phenomenological kinetic models helpful for predicting sorption properties under dynamic conditions? Applying the rate constants distribution (RCD) model to kinetic curves of Cu(II) ions sorption on polyethyleneimine (PEI) cryogel and gel beads and fines, we have shown that diffusion limitations in highly swollen beads are very important and result in at least ten-fold underestimation of the sorption rate constants. To account for intraparticle diffusion, we have developed the RCD-diffusion model, which yields “intrinsic” kinetic parameters for the sorbents, even if diffusion limitations were important in kinetic experiments. We have shown that introduction of a new variable—characteristic diffusion time—to the RCD model significantly improved the reliability of sorption kinetic parameters and allowed prediction of the minimal residence time in column required for efficient uptake of the adsorbate under dynamic conditions. The minimal residence time determined from kinetic curves simulated using the RCD-diffusion model was in good agreement with experimental data on breakthrough curves of Cu(II) ion sorption on monolith PEI cryogel at different flow rates.

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