Two-dimensional diffusion model for monomolecular decomposition

1989 ◽  
Vol 25 (1) ◽  
pp. 17-23
Author(s):  
S. I. Vashukov ◽  
V. A. Emel'kin
Keyword(s):  
Diffusion Model ◽  
Two Dimensional ◽  
Dimensional Diffusion ◽  
Monomolecular Decomposition

A two-dimensional diffusion model of the Venice lagoon and relative open boundary conditions

1987 ◽  
Vol 37 (1-2) ◽  
pp. 21-45 ◽  
Author(s):  
Camillo Dejak ◽  
Ileana Mazzei Lalatta ◽  
Ettore Messina ◽  
Giovanni Pecenik
Keyword(s):  
Boundary Conditions ◽  
Diffusion Model ◽  
Venice Lagoon ◽  
Open Boundary ◽  
Two Dimensional ◽  
Open Boundary Conditions ◽  
Dimensional Diffusion

A two-dimensional diffusion model for liquid phase electroepitaxial growth of GaAs

1994 ◽  
Vol 143 (3-4) ◽  
pp. 141-154 ◽  
Author(s):  
S. Dost ◽  
Z. Qin ◽  
N. Djilali
Keyword(s):  
Liquid Phase ◽  
Diffusion Model ◽  
Two Dimensional ◽  
Dimensional Diffusion

scholarly journals Analysis of Heavy Metal Pollution Based on Two-Dimensional Diffusion Model

2019 ◽  
pp. 87-92
Author(s):  
Yunhui Zeng ◽  
Wenhao Li ◽  
Hongfei Guo ◽  
Yilin Chen ◽  
Xiaoqing Jiang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Diffusion Model ◽  
Two Dimensional ◽  
Propagation Characteristics ◽  
Metal Pollutants ◽  
Dimensional Diffusion ◽  
Prevailing Wind Direction ◽  
The Law ◽  
Heavy Metal Pollutants

This paper takes the propagation characteristics of heavy metals and the judgment of the location of pollution sources as the research objects, aiming to analyze the propagation characteristics of different heavy metals. Firstly, the Gaussian diffusion model is conducted to establish the propagation characteristics model of heavy metal pollutants in the atmosphere. Then, based on the law of conservation of mass and the law of two-dimensional diffusion, the two-dimensional diffusion model is adopted to establish the propagation characteristics model of heavy metals in soil moisture. According to these two models, the nonlinear differential equations are established respectively, revealing that the characteristics of the two propagation ways are related to space, time, diffusion coefficients, and other factors. Then, in the light of the propagation characteristics of different heavy metals, the least square method is applied to reduce the data calculation error and obtain the specific location of the pollution source. Finally, through establishing the three-dimensional diffusion model of heavy metal diffusion by introducing artificial control, speed and angle of prevailing wind direction, and other factors, the model is further optimized. The establishment of this model provides an important theoretical basis and guiding significance for the future study of heavy metal pollutants.

TWO-DIMENSIONAL DIFFUSION MODEL FOR DIFFUSE INK PAINTING

2001 ◽  
Vol 07 (01) ◽  
pp. 45-58 ◽  
Author(s):  
TOSIYASU L. KUNII ◽  
GLEB V. NOSOVSKIJ ◽  
VLADIMIR L. VECHERININ
Keyword(s):  
Diffusion Model ◽  
Two Dimensional ◽  
Dimensional Diffusion

scholarly journals Analysis of Heavy Metal Pollution Based on Two-Dimensional Diffusion Model

2019 ◽  
pp. 1-6
Author(s):  
Yunhui Zeng ◽  
Wenhao Li ◽  
Hongfei Guo ◽  
Yilin Chen ◽  
Xiaoqing Jiang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Diffusion Model ◽  
Two Dimensional ◽  
Propagation Characteristics ◽  
Metal Pollutants ◽  
Dimensional Diffusion ◽  
Prevailing Wind Direction ◽  
The Law ◽  
Heavy Metal Pollutants

This paper takes the propagation characteristics of heavy metals and the judgment of the location of pollution sources as the research objects, aiming to analyze the propagation characteristics of different heavy metals. Firstly, the Gaussian diffusion model is conducted to establish the propagation characteristics model of heavy metal pollutants in the atmosphere. Then, based on the law of conservation of mass and the law of two-dimensional diffusion, the two-dimensional diffusion model is adopted to establish the propagation characteristics model of heavy metals in soil moisture. According to these two models, the nonlinear differential equations are established respectively, revealing that the characteristics of the two propagation ways are related to space, time, diffusion coefficients, and other factors. Then, in the light of the propagation characteristics of different heavy metals, the least square method is applied to reduce the data calculation error and obtain the specific location of the pollution source. Finally, through establishing the three-dimensional diffusion model of heavy metal diffusion by introducing artificial control, speed and angle of prevailing wind direction, and other factors, the model is further optimized. The establishment of this model provides an important theoretical basis and guiding significance for the future study of heavy metal pollutants.

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