Dynamic Scaling and Slowing Down in Chemical Reactions of the Critical Triethylamine−Water System

2007 ◽  
Vol 111 (6) ◽  
pp. 1438-1442 ◽  
Author(s):  
I. Iwanowski ◽  
U. Kaatze
Keyword(s):  
Chemical Reactions ◽  
Water System ◽  
Dynamic Scaling ◽  
Slowing Down

Fire Plume Along Vertical Surfaces: Effect of Finite-Rate Chemical Reactions

1984 ◽  
Vol 106 (4) ◽  
pp. 713-720 ◽  
Author(s):  
C. H. Chen ◽  
J. S. T’ien
Keyword(s):  
Carbon Monoxide ◽  
Gas Phase ◽  
Chemical Reactions ◽  
Vertical Wall ◽  
Fire Plume ◽  
Gas Phase Reactions ◽  
Finite Rate ◽  
Slowing Down ◽  
Kinetic Rates ◽  
Relative Kinetic

Fire plume along a vertical wall is analyzed using a laminar boundary layer model, including finite-rate, gas-phase chemical kinetics. The chemical reactions include two semiglobal steps: In the first, fuel is oxidized to form carbon monoxide and water vapor, and in the second, carbon monoxide is oxidized to form carbon dioxide. Several important nondimensional kinetic parameters are identified and a parametric study is given. The computed results indicate that by slowing down the relative kinetic rates in the gas-phase reactions, the total surface heat transfer rate and the preheating distance are decreased. Furthermore, slowing down the kinetics also increases the amount of unreacted combustibles that escape from the flame.

SHORT-TIME CRITICAL DYNAMICS OF MULTISPIN INTERACTION ISING MODEL IN TWO DIMENSIONS

1999 ◽  
Vol 13 (28) ◽  
pp. 1011-1018 ◽  
Author(s):  
L. WANG ◽  
J. B. ZHANG ◽  
H. P. YING ◽  
D. R. JI
Keyword(s):  
Two Dimensions ◽  
Dynamic Scaling ◽  
Critical Dynamics ◽  
Time Dynamic ◽  
Time Dynamics ◽  
Slowing Down ◽  
Universal Power Law ◽  
Time Critical ◽  
Short Time ◽  
Scaling Features

We investigated the short-time dynamics of a multispin model in two dimensions. A dynamical Monte Carlo simulation which avoids the critical slowing down is performed at critical temperature and the short-time dynamic scaling behavior is found. By using the universal power-law scaling features, the critical exponents θ, z and 2β/ν are estimated in our calculations.

Critical Slowing Down of Chemical Reactions in Liquid Mixtures

1998 ◽  
Vol 102 (32) ◽  
pp. 6498-6502 ◽  
Author(s):  
James K. Baird ◽  
John C. Clunie
Keyword(s):  
Chemical Reactions ◽  
Liquid Mixtures ◽  
Critical Slowing Down ◽  
Slowing Down

scholarly journals Impeded solid state reactions and transformations in ceramic catalysts supports and catalysts

2012 ◽  
Vol 6 (4) ◽  
pp. 173-182 ◽  
Author(s):  
Ernő Kiss ◽  
Goran Boskovic
Keyword(s):  
Solid State ◽  
Chemical Reactions ◽  
Solid State Reactions ◽  
Catalyst Supports ◽  
Polymorphous Transformation ◽  
Slowing Down ◽  
Short Overview ◽  
Ceramic Catalyst

Impeded chemical reactions and impeded polymorphous transformation in materials are discussed, as desired effects, for stabilization of ceramic catalyst supports and ceramic based catalysts. This paper gives a short overview about the possibilities of slowing down the aging processes in ceramic catalyst supports and catalysts. Special attention is given to alumina and titania based catalysts.

Slowing Down of Chemical Reactions near Thermodynamic Critical Points

1981 ◽  
Vol 46 (17) ◽  
pp. 1163-1165 ◽  
Author(s):  
Itamar Procaccia ◽  
Moshe Gitterman
Keyword(s):  
Chemical Reactions ◽  
Critical Points ◽  
Slowing Down

scholarly journals Farklı Bağlardan Toplanan Yaş Üzümler ile Bunların İki Farklı Yöntemle Gerçekleştirilen Kurutma İşlemleri Sonrasındaki Pestisit Kalıntılarının Tespit Edilerek Karşılaştırılması

2017 ◽  
Vol 5 (9) ◽  
pp. 1031
Author(s):  
Orhan Dinçay ◽  
Gamze İsfendiyaroğlu ◽  
Alev Aydın
Keyword(s):  
Chemical Reactions ◽  
The Other ◽  
Drying Methods ◽  
Maximum Residue Limit ◽  
Pesticide Concentration ◽  
Slowing Down ◽  
The World ◽  
Fresh Products

Drying is an economical extending method which is slowing down the bio-chemical reactions on products by removing unbound water on fresh products. There are two types drying methods using in seedless raisins production in the world. One of them is dipped in potash, the other one is not dipped in potash (natural). In this study, fresh grapes were harvested from different 6 vineyards from Alaşehir, Manisa in 2015. One part of these grapes were dried with potash and one part of them were naturally. Pesticide analyses were carried out both fresh grapes and raisins that were dried two different ways. As a result of these analyses, at least 8 pesticides were determined in every vineyards. There is at least one pesticide over MRL (Maximum Residue Limit) on fresh grapes in two vineyards and raisin in three vineyards. Nearly all pesticides concentrations increased when the grapes were dried. It was determined that raisins which were dried with potash have higher pesticide concentration than naturally dried raisins.

scholarly journals Сriteria for research of the process of dispersion of the system of hydrate lime-water

2020 ◽  
Vol 3 (2) ◽  
pp. 23-27
Author(s):  
A. I. Zahrai ◽  
◽  
Z. I. Borovets ◽  
I. V. Lutsyuk ◽  
Ya. M. Novitskyi ◽  
...  
Keyword(s):  
Dynamic Viscosity ◽  
Water System ◽  
Hydrated Lime ◽  
Vibration Method ◽  
Slowing Down ◽  
Hydrate Lime ◽  
Lime Water ◽  
Slaked Lime ◽  
Rotary Viscometer

The process of dispersion of slaked lime in a vibrating activator of the bunker type is investigated. The nature of the change in the viscosity of lime dough during machining by vibration and rotary viscometer has been studied. It is established that the process of vibroactivation of hydrated lime successively goes through the stages of proportional growth of dynamic viscosity, slowing down its growth and cessation of dispersion. The efficiency of using the vibration method for determining the viscosity of the hydrated lime – water system is shown.

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