Temat: head model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electroimpedance tomography as a tool for brain examination
Autorzy:: Gorajek, T.
Nowakowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/1954508.pdf
Data publikacji:: 1999
Wydawca:: Politechnika Gdańska
Tematy:: electroimpedance tomography
EIT
impedance modelling
EEG propagation analysis
head model
Opis:: Discusses the possibility of a successful electroimpedance tomography (EIT) reconstruction of the impedance distribution within the human head, taking into consideration the presence of the skull and its screening effect on electrical signals. The results of numerous computer simulations of the processes of impedance measurement and 3D EIT reconstruction are presented. The volume of the smallest recognisable perturbation within both the brain and the skull areas are determined, as well as their relationships with the required contrast. The unquestionable usefulness of the EIT approach for the purpose of impedance modelling is proven.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1999, 3, 4; 445-451
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Polar head charge of membrane modifiers and their biological activity: the Monte Carlo simulation studies
Autorzy:: Kubica, K.
Powiązania:: https://bibliotekanauki.pl/articles/1953950.pdf
Data publikacji:: 1998
Wydawca:: Politechnika Gdańska
Tematy:: Monte Carlo simulations
membrane modifiers
phospholipids
Pink model
membrane
membrane simulations
gel fluid transition
polar head charge
biological activity
Opis:: On the basis of the 10-state Pink model, the effect of the polar head charge of amphiphilic modifier molecules has been discussed. It was shown, that for small concentrations of anionic and cationic compounds inserted into a layer composed of electroneutral lipids the electrostatic interaction, in spite of the long-range character, can be limited to the nearest neighbour interaction. Computer simulation results suggest, that the gel-fluid transition temperature can be lowered or raised by a proper selection of anionic-cationic amphiphilic modifiers. Moreover, the effect of ionic strength of the membrane medium and dielectric permeability of the hydrophobic part of membrane, where a shift of the dielectric constant from 5 to 80 occurred, has been studied. It was also shown that addition of alkyl molecules to the membrane, which are the counterions of alkyl modifier molecules added earlier, almost doubles the number of incorporated membrane modifiers. Membrane permeability analysis shows that membrane permeability, at temperatures lower than the gel-fluid transition temperature, should be more related to the number of small domains (cluster area) and less to the interfacial area.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 4; 601-609
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "head model" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język