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Wyszukujesz frazę "diamond nanoparticles" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Growth and osteogenic differentiation of human osteoblast-like cells on nanofibrous scaffolds loaded with diamond nanoparticles: improvement or impairment?
Autorzy:
Musilkova, J.
Stankova, L.
Potocky, S.
Kromka, A.
Stranska, D.
Bacakova, L.
Powiązania:
https://bibliotekanauki.pl/articles/285888.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
nanofibrous scaffold
diamond nanoparticles
human osteoblasts
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 32
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of nanodiamonds application – biological and medical aspects
Autorzy:
Solarska-Ściuk, Katarzyna
Kleszczyńska, Halina
Powiązania:
https://bibliotekanauki.pl/articles/895695.pdf
Data publikacji:
2019-10-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
biocompatibility
Endocytosis
drug transporters
diamond nanoparticles
surface functionalization
Opis:
This topical review briefly discusses selected highlights of research on diamond nanoparticles obtained by different methods and their potential applications in biology and medicine. In recent years nanotechnology has aroused interest of large number of scientists who endeavor to obtain nanoparticles (which differ in size and structure of surface) using different methods, in order to determine their physical, chemical and biological properties that are in relation to the methods used in the process of their production. The knowledge developed in this way will be beneficial in an attempt to use nanoparticles more reasonably in various branches of science. The distinguishing features of carbon nanoparticles are their biocompatibility, photostability and easily chemically modified surface that result in high usefulness for intarcellular studies. What is more, low toxicity of nanoparticles with many cell lines is at the center of scientific interest. This, in turn, leads to a large number of biomedical applications. The property that nanodiamonds are able to penetrate into cells through endocytosis, allows to deliver the drug connected with nanoparticles into cancer cells. These features of nanoparticles have given many promising leads in nanooncology, in particular in drug delivery, diagnosis, imaging and therapy. This paper presents a summary of different classes of nanodiamond particles, the ways of their uptake into cells, an overview of the possible application of nanoparticles as nanocarriers and as a clinical theranostic platform, as well as advantages and disadvantages of using nanodiamonds in biomedicine.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 5; 779-796
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Deposition of Silver on Aluminum Alloys
Autorzy:
Valov, R.
Petkov, V.
Valkanov, S.
Powiązania:
https://bibliotekanauki.pl/articles/946872.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
silver plating
aluminum alloys
diamond nanoparticles
SEM
posrebrzanie
stopy aluminium
nanocząsteczki diamentu
Opis:
Silver coatings have a very high reflection ability. To avoid their darkening from the hydrogen sulphide in the air, a thin layer of heat-resistant colorless lacquer is applied to the coatings. Silver plating is mainly used in jewelery, optics, electronics and electrical engineering. Depending on their application the thickness of the layer may vary from 2 to 24 μm. It can be done in several ways: chemical, electrochemical, contact, etc. The most common way of silver plating is the electrochemical deposition using cyanide and non-cyanide electrolytes. The cyanide electrolytes produce light, fine crystalline, dense and plastic coatings upon silver-plating. Usually silver coatings are applied with copper or nickel intermediate layer. In order to improve the de-oxidation of the aluminum surface new chemical treatment in acid – alkaline solution was applied. Our previous research shows that the presence of diamond nanoparticles in the electrolyte increase the metal deposition. Samples were prepared from electrolyte containing 10 g/l diamond nanoparticles. Their properties were compared to the properties of reference samples. The diamonds were obtained by detonation synthesis. The aim of this study is to obtain electrochemically deposited silver layer with high density, adhesion and electric conductivity on aluminum alloys substrate. The coating was directly plated without intermediate layer. Non-cyanide electrolyte composition and electrochemical parameters were determined in order to produce Ag coatings on Al alloy substrate without intermediate layer. The coating is with good adhesion, density and thickness of 14-23 μm.
Źródło:
Archives of Foundry Engineering; 2020, 20, 2; 101-104
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wear Resistant Chromium Coatings Modified with Diamond Nanoparticles
Odporność na zużycie ścierne powłok chromowych modyfikowanych nanocząstkami diamentu
Autorzy:
Gidikova, N.
Ciaś, A.
Petkov, V.
Madej, M.
Sułowski, M.
Valov, R.
Powiązania:
https://bibliotekanauki.pl/articles/356141.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
diamond nanoparticles
chrome galvanization
microhardness
wear resistance
nanocząski diamentu
galwanizacja
mikrotwardość
odporność na zużycie
Opis:
Electrochemical chromium coatings on steel, modified with diamond nanoparticles (NDDS), were produced by detonation synthesis. Their particle size was from 10 to 50 nm. Galvanization conditions, current density, etc., concentration of NDDS, were studied in relation to the characteristics of the chromium coatings. The optimal conditions were determined to attain the maximal values of the physical and mechanical properties of the coating. Surface topography after wear testing was examined. Compared to unmodified chromium coating, microhardness of the surface increased to 1100 kg/mm2 , wear resistance, expressed as % of mass loss, increased from 3 to 10 times.
Powłoki chromowe, wytworzone elektrochemicznie na stali, modyfikowane nanocząstkami diamentu, zostały wyprodukowane w procesie syntezy detonacyjnej. Ich wielkość czastek mieściła się w zakresie od 10 do 50 nm. W artykule przedstawiono wpływ warunków galwanizacji, gęstości katodowej prądu, koncentracji nanocząstek diamentu na grubość powłoki chromowej. Podczas badań wytypowano optymalne warunki wytwarzania, pozwalające na uzyskanie warstwy chromowej o najlepszych własnościach fizycznych oraz mechanicznych. Przeprowadzono również badania odporności na ścieranie uzyskanych warstw. Na podstawie badań stwierdzono, że w porównaniu do powłok chromowych nie modyfikowanych nanocząstkami diamentu, mikrotwardość na powierzchni wzrosła do 1100 kg/mm2 , a odporność na zużycie ścierne, wyrażona jako % ubytek masy, wzrosła od 3 do 10 razy.
Źródło:
Archives of Metallurgy and Materials; 2014, 59, 4; 1513-1516
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics and Properties of Chromium Coatings with Diamond Nanoparticles Deposited Directly on Aluminum Alloys
Autorzy:
Petkov, V.
Valov, R.
Simeonova, S.
Kandeva, M.
Powiązania:
https://bibliotekanauki.pl/articles/1841064.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chromium coating
aluminum alloy
diamond nanoparticles
atomic force microscopy
wear resistance
powłoka chromowa
stop aluminium
nanocząsteczki diamentu
mikroskopia sił atomowych
odporność na zużycie
Opis:
The objective of this study was to deposit directly chromium with diamond nanoparticles (ND) on aluminum alloys and investigate the coating surface. The chromium coatings on aluminum alloys were obtained by electrochemical deposition. The coatings were doped with ND. The diamond nanoparticles were obtained by detonation synthesis. Chromium coatings were deposited on aluminum alloys with a silicon content of 7 % and 10 %. The ND concentration in the electrolyte was 25 g/l. The surface analysis was performed by means of Atomic force microscopy. The surface of the coating of chromium with ND on Al10Si is twice more even than that on Al7Si. The microstructure and microhardness were examined with a metallographic microscope and a microhardness tester. The microhardness of the coated samples is 9163 MPa compared to 893 MPa of uncoated aluminum samples. The thickness of the chromium coatings doped with diamond nanoparticles is between 45 – 55 μm. The coatings are dense, continuous and uniform with good adhesion to the substrate material.
Źródło:
Archives of Foundry Engineering; 2020, 20, 4; 115-120
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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