Temat: bioheat transfer - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical analysis of the thermal damage process of the tissue-blood vessel system and distribution of oxygen in the tissue
Autorzy:: Jasiński, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2086966.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: bioheat transfer
oxygen transport
Arrhenius integral
laser-tissue interactions
Opis:: The paper presents a numerical analysis of the thermal damage process taking place in biological tissue containing a blood vessel during laser irradiation. The internal heat source resulting from laser irradiation based on the solution of the optical diffusion equation is taken into account. The investigation was concerned with the influence of tissue denaturation and oxygen content in blood on temperature distribution. The analysis of oxygen transport to the tissue is treated as a part of the analysis of thermal damage processes. At the stage of numerical computations, the boundary element method and the finite difference method were used.
Źródło:: Journal of Theoretical and Applied Mechanics; 2022, 60, 2; 199--212
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modelling of tissue thermal injury formation process with application of direct sensitivity method
Autorzy:: Jasiński, M.
Powiązania:: https://bibliotekanauki.pl/articles/280597.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: bioheat transfer
Arrhenius scheme
boundary element method
sensitivity analysis
Opis:: In the paper, numerical analysis of thermal processes proceeding in a biological tissue is presented. The tissue is subjected to the external heat impulse and a 2D problem is taken into account. In order to determine the influence of variations of thermophysical parameters of the tissue on the value of tissue injury integral and the area of the lesion, a direct approach of sensitivity analysis is applied. The process of thermal injury formation is also analyzed. At the stage of numerical simulation, the boundary element method is used. In the final part of the paper, an example of numerical simulation is shown.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 4; 947-957
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Application of the Control Volume Method using the Voronoi polygons for numerical modeling of bio-heat transfer processes
Autorzy:: Ciesielski, M.
Mochnacki, B.
Powiązania:: https://bibliotekanauki.pl/articles/279675.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: bioheat transfer
numerical modeling
Control Volume Method
Voronoi’s diagram
Opis:: In the paper, the problem concerning the numerical modeling of thermal processes in the domain of a biological tissue being in thermal contact with the environment is discussed. The changing ambient temperature causes that the non-steady heat transfer process is con- sidered. The cross-section of the forearm (2D problem) is treated as a non-homogeneous domain in which the sub-domains of skin tissue, fat, muscle and bone are distinguished. From the mathematical point of view, the boundary-initial problem described by the system of energy equations (the Pennes equations), boundary conditions on the external surface of the system, boundary conditions on the surfaces limiting the successive sub-domains and the initial condition is analyzed. At the stage of numerical computations, the Control Volume Method using the Voronoi polygons is applied. In the final part of the paper, examples of computations are shown.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 4; 927-935
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modelling of biological tissue damage process with application of interval arithmetic
Autorzy:: Korczak, Anna
Jasiński, Marek
Powiązania:: https://bibliotekanauki.pl/articles/279929.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: directed interval arithmetic
bioheat transfer
optical diffusion equation
Arrhenius scheme
Opis:: In the paper, the numerical analysis of thermal processes proceeding in a 2D soft biological tissue subjected to laser irradiation is presented. The transient heat transfer is described by the bioheat transfer equation in Pennes formulation. The internal heat source resulting from the laser-tissue interaction based on the solution of the diffusion equation is taken into account. Thermophysical and optical parameters of the tissue are assumed as directed intervals numbers. At the stage of numerical realization. the interval finite difference method has been applied. In the final part of the paper, the results obtained are shown.
Źródło:: Journal of Theoretical and Applied Mechanics; 2019, 57, 1; 249-261
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Application of the control volume method in numerical modeling of cryosurgery treatment
Autorzy:: Szopa, R.
Siedlecki, J.
Powiązania:: https://bibliotekanauki.pl/articles/122277.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
modeling of cryosurgery treatment
control volume method
przepływ ciepła
Opis:: In the paper the problems of cryosurgery treatment are discussed. In particular the heat exchange between external cylindrical cryoprobe and human tissue is analyzed. The cryoprobe tip temperature changes from the initial temperature to the minimal one and back in a linear way (broken line). Thermophysical parameters determining the thermal properties of tissue can be treated as the temperature-dependent functions. The freezing model bases on the approach called ‘a one domain method’, and in the energy equation called a substitute thermal capacity appears. At the stage of computations the control volume method (CVM) is used. In the final part of paper the examples of computations are presented.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2014, 13, 4; 131-136
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Determination of the temperature field in burned and healthy skin tissue using the boundary element method. Part 2
Autorzy:: Freus, K.
Freus, S.
Powiązania:: https://bibliotekanauki.pl/articles/122947.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
Pennes equation
boundary element method
przepływ ciepła
równanie Pennesa
metoda elementów brzegowych
Opis:: In the paper, the position of the boundary between burned and healthy tissue is described by the NURBS curve. The temperature field in the domain is calculated by means of the boundary element method. The influence of discretization on the temperature distribution in the burned and healthy skin tissue is analysed. Different numbers of boundary elements and internal cells are taken into account. In the final part of the paper the examples of computations are shown.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 3; 47-54
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Determination of the temperature field in burned and healthy skin tissue using the boundary element method. Part 1
Autorzy:: Freus, K.
Freus, S.
Majchrzak, E.
Powiązania:: https://bibliotekanauki.pl/articles/123011.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
Pennes equation
boundary element method
przepływ ciepła
równanie Pennesa
metoda elementów brzegowych
Opis:: In the paper the burned and healthy layers of skin tissue are considered. The temperature distribution in these layers is described by the system of two Pennes equations. The governing equations are supplemented by the boundary conditions. On the external surface the Robin condition is known. On the surface between burned and healthy skin the ideal contact is considered, while on the internal surface limiting the system the body temperature is taken into account. The problem is solved by means of the boundary element method.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 3; 39-46
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: 3D model of thermal interactions between human forearm and environment
Autorzy:: Duda, M.
Mochnacki, B.
Powiązania:: https://bibliotekanauki.pl/articles/122811.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
temperature field in forearm domain
finite element method
przepływ biociepła
metoda elementów skończonych
Opis:: Thermal processes in the domain of a human forearm are considered. The external surface of forearm is in the direct thermal contact with the environment. The steady state problem is considered. From the mathematical point of view, the task is described by the system of the Poisson-type equations, the boundary conditions given on the contact surface between tissue sub-domains, the boundary conditions determining heat transfer between blood vessels and tissue and the boundary conditions on the external surface of the system. The non-homogeneous forearm domain is reconstructed as accurately as possible (3D task). At the stage of numerical modelling, the finite element method has been used. In the final part of the paper the example of computations is presented.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 3; 17-23
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Sensitivity analysis of transient bioheat transfer during thermal injury formation of biological tissue
Autorzy:: Jasiński, M.
Powiązania:: https://bibliotekanauki.pl/articles/122465.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
tissue injury integral
tissue injury
sensitivity analysis
przepływ ciepła
uraz tkanki
analiza wrażliwości
Opis:: The sensitivity analysis of the transient temperature field in the 2D tissue domain with respect to its thermophysical parameters is discussed. In particular, the influence of tissue specific heat, thermal conductivity, perfusion rate and metabolic heat source on the temperature distribution is considered. In order to determine the influence of variations of these parameters on temperature distribution, the direct approach of sensitivity analysis is applied. The algorithm of modeling of tissue injury withdrawal based on Arrhenius integral is also presented. At the stage of numerical realization the boundary element method is used. In the final part of paper the results obtained are shown.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2014, 13, 2; 33-42
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Modelling of thermal damage in laser irradiated tissue
Autorzy:: Jasiński, M.
Powiązania:: https://bibliotekanauki.pl/articles/122504.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: bioheat transfer
Arrhenius scheme
tissue damage
laser irradiation
przepływ biociepła
schemat Arrheniusa
uszkodzenia tkanki
promieniowanie laserowe
Opis:: In the paper the numerical analysis of thermal processes proceeding in the 2D homogeneous biological tissue subjected to laser irradiation is presented. In particular, the influence of necrotic changes in tissue on the values of the perfusion coefficient and effective scattering coefficient are discussed. The transient heat transfer is described by the bioheat transfer equation in the Pennes formulation. As a model of light distribution in tissue, the first-order scattering approach has been used. At the stage of numerical realization the 1st scheme of the boundary element method has been applied.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 4; 67-78
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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