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Wyświetlanie 1-2 z 2
Tytuł:
The technique of flow cytometry in diagnostic research
Autorzy:
Macheta, A.
Radko, K
Szymczyk, S.
Podhorecka, M
Powiązania:
https://bibliotekanauki.pl/articles/102250.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
flow cytometry
immunophenotype
hematooncology
Opis:
Flow cytometry is a technology that simultaneously counts and then examines multiple physical and/or chemical characteristics of single particles, usually cells, as they flow in a fluid stream through a beam of light. The properties measured include a particle’s relative size, relative granularity or internal complexity, and relative fluorescence intensity. These characteristics are determined using an optical-to-electronic coupling system that records how the cell scatters incident laser light and emits fluorescence. One of the most significant applications is immunophenotyping of cells - the most important tool in diagnosis and monitoring haematological disorders, such as acute and chronic leukemia, lymphoma, monoclonal gammopathy, myelodisplastic and myeloproliferative diseases.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 19; 55-59
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase composition and morphology characteristics of ceria-stabilized zirconia powders obtained via sol-gel method with various pH conditions
Autorzy:
Nakonieczny, D. S.
Paszenda, Z. K.
Basiaga, M.
Radko, T.
Drewniak, S.
Podwórny, J.
Bogacz, W.
Powiązania:
https://bibliotekanauki.pl/articles/306224.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
zol-żel
bioceramika
tlenek cyrkonu
właściwości termiczne
morfologia proszków
sol-gel
bioceramics
zirconia
oxide dopants
thermal properties
powder morphology
Opis:
High purity, fine crystalline, degradation-free at low temperature powders have attracted special interest in CAD/CAM prosthetic dentistry full ceramic restorations. This study reports the preparation and characterisation of zirconia-ceria (0.9ZrO20.1CeO2) powders. Materials were obtained from zirconium-n-alkoxide and cerium nitrate hexahydrate in the pH 2–4 and 8–10. Methods: Zirconia-ceria powders were obtained with the sol-gel method in a humid-free environment. Thermal analysis (TGA/DTA) of the as-prepared materials was made for an assessment of its behaviour at elevated temperatures. Specimens were dried at 80°C and calcinated in two stages: at 300°C with soaking time 2.5 h and 850°C with holding time 2.5 h, in order to evaluate the phase transformations. Thermal analyses of the as-dried powders were made for an assessment of its thermal behaviour during heat treatment up to 1000 °C. By X-ray diffraction (XRD), polymorphs of ZrO2 were identified. Additionally, scanning electron microscopy (SEM) and laser particle size distribution (PSD) were involved for characterisation of morphology of the powders. Results: We found a correlation between the pH of the colloidal system and the morphology of the as-obtained powders. Based on analysis (SEM,PSD), structures were identified known as soft and hard agglomerates. Conclusions: In summary, it can be stated differences were found between powder morphology depending on the used pH, which can be crucial for powder densification during sintering and compacting green bodies which, as a consequence, may be crucial for the lifetime of zirconia prostheses. Correlations between phase composition and pH are difficult to grasp, and require further more sophisticated studies.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 21-30
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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