Autor: Agabekov, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulation of Langmuir-Blodgett Film Surface Stm Images
Autorzy:: Agabekov, V. E.
Zhavnerko, G. K.
Bar, G.
Cantow, H.-J.
Powiązania:: https://bibliotekanauki.pl/articles/1968763.pdf
Data publikacji:: 1998-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.55.-a
71.20.Rv
02.60.Cb
Opis:: The simulation of the STM image of a hydrocarbon tail of a fatty acid was carried out and compared to the experimental results. The simulation procedure includes calculations of the distribution of an isolated molecule electronic density by the extended Huckel-Hoffmann method. An agreement between the calculated and experimental STM images of closely packed Langmuir-Blodgett film of cobalt behenate on the graphite surface was observed. The weak interactions between the graphite surface and the adsorbed molecules constituting bi- and multilayer Langmuir-Blodgett films can be neglected in simulations of STM images.
Źródło:: Acta Physica Polonica A; 1998, 93, 2; 383-386
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fabrication and physicochemical properties of pectin/chitosan scaffolds
Autorzy:: Kulikouskaya, V.
Lazouskaya, M.
Agabekov, V.
Powiązania:: https://bibliotekanauki.pl/articles/286177.pdf
Data publikacji:: 2018
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: chitosan
pectin
3D scaffold
degradation
Opis:: Scaffolds from chitosan and its combinations with other polymers are widely used for tissue engineering application. This is due to the favourable biological properties of chitosan such as antimicrobial activity, biocompatibility, biodegradability, cell adhesion and proliferation, etc. The aim of the study was the creation of 3D porous scaffolds based on pectin/chitosan polyelectrolyte complexes and study the influence of components ratio on their physico-chemical properties, as well as degradation behaviour in solutions modelling the media of the human body. Porous “sponge-like” polysaccharide films were produced using freeze-drying technique from gel-like pectin-chitosan polyelectrolyte complexes. The weight ratio of chitosan:pectin in complexes was varied in the range from 1:1 to 1:2. Obtained samples were characterized by infrared spectroscopy and scanning electron microscopy. It has been shown that pectin-chitosan films turned out to have sponge-like structure with highly interconnected pores with the size about 50-300 μm. It has been determined that all samples regardless of the chitosan:pectin ratio possess high swelling properties. The degradation profile of scaffolds in different media was studied. It has been determined that the largest weight loss is observed in water and reaches more than 80% after 1 day, while in NaCl and PBS solutions weight loss is approximately 50-60% after 25 days. For samples with different chitosan:pectin weight ratio, weight loss slightly rise with increasing amount of pectin. It has been shown that mesenchymal stem cells adhered to the surface of obtained pectin:chitosan porous scaffolds in viable state. Hence, it can be served as a potential material for tissue engineering applications.
Źródło:: Engineering of Biomaterials; 2018, 21, 146; 2-7
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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