On the Distribution Density of the First Exit Point of a Diffusion Process with Break from a Small Circular Neighborhood of Its Initial Point

Author(s):  
B. P. Harlamov
2020 ◽  
Vol 92 (3) ◽  
pp. 31101
Author(s):  
Zahoor Iqbal ◽  
Masood Khan ◽  
Awais Ahmed

In this study, an effort is made to model the thermal conduction and mass diffusion phenomena in perspective of Buongiorno’s model and Cattaneo-Christov theory for 2D flow of magnetized Burgers nanofluid due to stretching cylinder. Moreover, the impacts of Joule heating and heat source are also included to investigate the heat flow mechanism. Additionally, mass diffusion process in flow of nanofluid is examined by employing the influence of chemical reaction. Mathematical modelling of momentum, heat and mass diffusion equations is carried out in mathematical formulation section of the manuscript. Homotopy analysis method (HAM) in Wolfram Mathematica is utilized to analyze the effects of physical dimensionless constants on flow, temperature and solutal distributions of Burgers nanofluid. Graphical results are depicted and physically justified in results and discussion section. At the end of the manuscript the section of closing remarks is also included to highlight the main findings of this study. It is revealed that an escalation in thermal relaxation time constant leads to ascend the temperature curves of nanofluid. Additionally, depreciation is assessed in mass diffusion process due to escalating amount of thermophoretic force constant.


2020 ◽  
Vol 53 (2) ◽  
pp. 93-112
Author(s):  
Indira Dupuis

In this article, I present the results of an analysis of print media reporting on the spectacular trial in 1984 against the murderers of Jerzy Popiełuszko in communist Poland. The aim of my research is to show how the coverage contributed to the de-legitimization of the Communist Party despite the mass media system's tight structures of control. Because of mass media functionality, the coverage of this event contributed to political transformation not only by publicizing a hitherto tabooed topic but also by establishing an initial point for informed public criticism of the government.


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