scholarly journals KINETICS OF CHARGING INTERFACE OF BLOCKED ELECTRODE-SOLID ELECTROLYTE IN GALVANODYNAMIC AND POTENTIODYNAMIC MODES. CASE OF DELAYED DIFFUSION AND ADSORPTION-DESORBTION OF TWO PARTICLE OF DIFFERENT KIND

2018 ◽  
Vol 59 (2) ◽  
pp. 41
Author(s):  
Rizvan M. Guseiynov ◽  
Zumrud N. Bakhmudkadieva ◽  
Zaripat A. Zaiynutdinova ◽  
Kheiyrulla M. Makhmudov ◽  
Radzhab A. Rabzhabov
Keyword(s):  
Solid Electrolyte ◽  
Impedance Method ◽  
Active Particles ◽  
Electrochemically Active ◽  
Inert Electrode ◽  
Blocked Electrode ◽  
Operational Impedance ◽  
Long Time ◽  
Adsorption Desorption ◽  
Kinetics Of

The kinetics of charging the blocked (inert) electrode/ solid electrolyte interface was studied by operational impedance method in the galvanodynamic and potentiodynamic modes. For calculations the equivalent electrical scheme of Jacobsen and West method was used which is suitable in the case of long time of charging. The participation of two different electrochemically active particles in a process of delayed diffusion and adsorption-desorption was taken into account.

scholarly journals BEHAVIOR OF BLOCKING (INERT) ELECTRODE / SOLID ELECTROLYTE INTERFACE IN GALVANOGARMONIC CHARGING MODE. CASE OF DECELERATED DIFFUSION AND ADSORPTION –DESORPTION OF TWO DIFFERENT KINDS OF PARTICLES

2018 ◽  
Vol 59 (3) ◽  
pp. 59
Author(s):  
Rizvan M. Guseynov ◽  
Kheiyrulla M. Makhmudov ◽  
Radzhab A. Radzhabov ◽  
Zumrud N. Bakhmudkadieva ◽  
Zaripat A. Zaynutdinova
Keyword(s):  
Solid Electrolyte ◽  
Electrochemical Impedance ◽  
Electric Circuit ◽  
Equivalent Electric Circuit ◽  
Electric Circuits ◽  
Calculation Technique ◽  
Inert Electrode ◽  
A Cell ◽  
Charging Mode ◽  
Adsorption Desorption

Electrochemical behavior of a cell with an interface of blocking electrode /solid electrolyte was studied in galvanogarmonic mode of charge. The possibility of application of simple and more graphic calculation technique and separation of electrochemical impedance schemes into active and reactive constituents was shown. The Jacobsen-West diffusion model was used as an equivalent electric circuit, which is valid for relatively large times or low AC frequencies. The plotting of dependences of active and reactive impedance components on AC frequency was used in order to estimate the values of parameters for studied equivalent electric circuits.

scholarly journals INVESTIGATION OF THE KINETICS OF INTERACTION OF CHEMICALLY ACTIVE PARTICLES WITH THE SILICON SURFACE DURING DEEP CRYOGENIC ETCHING

2020 ◽  
Author(s):  
Yaroslav Miroshkin ◽  
Askar Rezvanov
Keyword(s):  
Adsorption Kinetics ◽  
Silicon Surface ◽  
Quantitative Estimation ◽  
Anisotropic Etching ◽  
Langmuir Adsorption ◽  
Active Particles ◽  
Adsorption Desorption ◽  
Kinetics Of ◽  
Desorption Model

This work is devoted to the study of the interaction of chemically active particles with the silicon surface in the process of deep anisotropic etching using the Cryo method. A method is proposed for quantitative estimation of kinetics of particles based on the adsorption-desorption model of Langmuir adsorption kinetics.

scholarly journals Multifaceted phase ordering kinetics of an antiferromagnetic spin-1 condensate

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joanna Pietraszewicz ◽  
Aleksandra Seweryn ◽  
Emilia Witkowska
Keyword(s):  
Scaling Laws ◽  
Study Phase ◽  
One Dimensional ◽  
Phase Domain ◽  
Ordering Kinetics ◽  
Domain Coarsening ◽  
Long Time ◽  
Phase Ordering ◽  
Kinetics Of ◽  
Antiferromagnetic Spin

AbstractWe study phase domain coarsening in the long time limit after a quench of magnetic field in a quasi one-dimensional spin-1 antiferromagnetic condensate. We observe that the growth of correlation length obeys scaling laws predicted by the two different models of phase ordering kinetics, namely the binary mixture and vector field. We derive regimes of clear realization for both of them. We demonstrate appearance of atypical scaling laws, which emerge in intermediate regions.

Kinetics of gallium adlayer adsorption/desorption on polar and nonpolar GaN surfaces

2007 ◽  
Vol 25 (3) ◽  
pp. 969 ◽  
Author(s):  
Soojeong Choi ◽  
Tong-Ho Kim ◽  
Henry O. Everitt ◽  
April Brown ◽  
Maria Losurdo ◽  
...  
Keyword(s):  
Adsorption Desorption ◽  
Kinetics Of ◽  
Nonpolar Gan

scholarly journals Adsorption of malic acid at the hydroxyapatite/aqueous NaCl solution interface

2021 ◽  
Author(s):  
Władysław Janusz ◽  
Ewa Skwarek
Keyword(s):  
Zeta Potential ◽  
Malic Acid ◽  
Particle Sizes ◽  
Nacl Solution ◽  
X Ray Diffraction ◽  
Radioisotope Method ◽  
X Ray ◽  
Solution Interface ◽  
Adsorption Desorption ◽  
Kinetics Of

AbstractThe aim of the study was the basic incidence on the phenomenon of adsorption that occurs at the hydroxyapatite/malic acid interface, leading to a change in the surface properties of hydroxyapatite, Analytical methods used in the research: X-ray diffraction (XRD) as well as by the, adsorption–desorption of nitrogen (ASAP), potentiometric titration. The specific adsorption of malic acid ions at the hydroxyapatite interface was investigated by means of the radioisotope method. The zeta potential of hydroxyapatite dispersions was determined by electrophoresis with Zetasizer Nano ZS90 by Malvern. The particle sizes of hydroxyapatite samples were analyzed using Masteriszer 2000 Malvern. Studies on the kinetics of malic acid on hydroxyapatite from a solution with an initial concentration of 1 mmol/dm3 have shown that the adsorption process is initially fast, followed by a slow adsorption step. An increase in the pH of the solution causes a decrease in the malic acid adsorption as a result of competition with hydroxyl ions. The presence of adsorbed malic acid was confirmed by the FTIR measurements. The effect of malic acid adsorption on the zeta potential and particle size distribution of hydroxyapatite in the NaCl solution was investigated.

Luminescence kinetics of semiconductor doped glasses in the long time region

1992 ◽  
Vol 71 (2) ◽  
pp. 942-945 ◽  
Author(s):  
S. Burkitbaev ◽  
M. Bertolotti ◽  
E. Fazio ◽  
A. Ferrari ◽  
G. Liakhou ◽  
...  
Keyword(s):  
Luminescence Kinetics ◽  
Long Time ◽  
Doped Glasses ◽  
Time Region ◽  
Kinetics Of

scholarly journals Neutralizing and binding antibody kinetics of COVID-19 patients during hospital and convalescent phases

2021 ◽  
Author(s):  
Xiang-Yang Yao ◽  
Wei Liu ◽  
Zhi-Yong Li ◽  
Hua-Long Xiong ◽  
Ying-Ying Su ◽  
...  
Keyword(s):  
Regression Coefficient ◽  
Control Strategies ◽  
Illness Onset ◽  
Relative Contribution ◽  
Long Time ◽  
Iga Antibody ◽  
Binding Antibody ◽  
Blood Specimens ◽  
Antibody Kinetics ◽  
Kinetics Of

Abstract Background: Knowledge of host immune response after natural SARS-CoV-2 infection is essential for the direction of vaccination and epidemiological control strategies against COVID-19.Methods: Thirty-four COVID-19 patients were enrolled with 244 serial blood specimens (38.1% after hospital discharge) collected to explore the chronological evolution of neutralizing (NAb), total (TAb), IgM, IgG and IgA antibody in parallel.Results: IgG titers reached a peak later (35 days postonset) than those of Nab, Ab, IgM and IgA (25 days postonset). IgM levels declined with an estimated half-life of 35 days postonset, which was more rapid than those of IgA and IgG (73-76 days postonset). All patients remained positive for NAb, IgG and IgA up to 3 months after illness onset. The relative contribution of IgM to NAb was higher than that of IgG (standardized β regression coefficient: 0.53 vs 0.48). However, the relative contribution of IgG to NAb increased and that of IgM further decreased after 6 weeks postonset.Conclusions: This study suggests that SARS-CoV-2 infection induces robust neutralizing and binding antibody responses in patients. Humoral immunity against SARS-CoV-2 acquired by infection may persist for a relatively long time.

scholarly journals Kinetics of the cercaria-schistosomul um transformation in vivo: 2. The effect of oxamniquine

1985 ◽  
Vol 18 (4) ◽  
pp. 251-255 ◽  
Author(s):  
A. L. Melo ◽  
L.H. Pereira
Keyword(s):  
Peritoneal Cavity ◽  
Abdominal Cavity ◽  
Long Time ◽  
Peritoneal Washings ◽  
High Doses ◽  
Kinetics Of

To study the cercaria-schistosomulum transformation in vivo, underthe influence of an antischistosomal compound (oxamniquine), a model using cercarial infections into the abdominal cavity of mice was chosen. This procedure provided easy and reproducible recoveries of larvae from peritoneal washings with appropriate solutions for a long time (30 to 180 min) after inoculation. The results show that high doses of oxamniquine (given intramuscularly one hour before the infection) produce a marked delay in the kinetics of the cercaria-schistosomulum transformation. Cercariae, tail-less cercarial bodies and schistosomula were recovered from the peritoneal cavity ofdrug treated mice in numbers significantly different from those recovered from untreated mice.

scholarly journals The effect of loading frequency on the cyclic mechanical behavior of polyethylene

2015 ◽  
Vol 18 (4) ◽  
pp. 162-169
Author(s):  
Thao Song Thanh Nguyen ◽  
Nhung Thi Tuyet Le
Keyword(s):  
Experimental Investigation ◽  
Mechanical Behavior ◽  
Hysteresis Loop ◽  
Room Temperature ◽  
Tensile Tests ◽  
Loading Frequency ◽  
Ratcheting Strain ◽  
Accumulated Strain ◽  
Long Time ◽  
Kinetics Of

An experimental investigation into ratcheting strain and stress-strain hysteresis loop in stress-controlled cyclic tensile tests at room temperature was performed to determine the effect of loading frequency on the cyclic mechanical behavior of highdensity polyethylene (HDPE). It was found that frequencies ranging from 0.01 Hz up to 1 Hz mostly affects the accumulated strain over related time scales (i.e that of the cycle itself) and not over long time scale (i.e. during the full test). In addition, the higher the frequency is, the more closed and vertical the loops are. Furthermore, the frequency affects only on the kinetics of stabilization of ratcheting strain but not on one of hysteresis loop.

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