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Wyszukujesz frazę "Demirel, M." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Mechanical properties and cell viability of MgO-reinforced biografts fabricated for biomedical applications
Autorzy:
Demirel, M.
Powiązania:
https://bibliotekanauki.pl/articles/306588.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
MgO
sol-gel
biograft
cytotoksyczność
sol–gel
cytotoxicity
Opis:
In the present study, biografts were produced by sol gel method by adding different rates of MgO which has bone-like crystal structure and high endurance into different proportions of Ca(NO3)24H2O, KOH, NaNO3, and P2O5 compounds. The biografts were investigated in terms of mechanical and biocompatibility properties. FTIR, SEM and XRD analyses were carried out to examine the chemical characteristics and changes in structural morphology. Mechanical properties were also investigated by conducting hardness and compression tests. In addition, cytotoxicity tests were conducted by using osteoblast cells. While results of FTIR and XRD analyses revealed that all biografts had HA (hydroxyapatite) and β-TCP contents, MgO peaks were also observed in biografts. In SEM images, grains of NonMgO and MgO-10 biografts had sharper edges, pores formed between grains and grain size increase with increasing MgO amount (MgO-20 and MgO-30). It was found that compression stress and hardness values increased as MgO content elevated. From the cytotoxicity tests, no any toxic effect was observed in the syntesized biografts.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 4; 83-90
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of porosity on the structure, mechanical properties and cell viability of new bioceramics as potential bone graft substitutes
Autorzy:
Demirel, M.
Aksakal, B.
Powiązania:
https://bibliotekanauki.pl/articles/306668.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
implant dokostny
hydroksyapatyt
zol-żel
porowatość
właściwości mechaniczne
bone graft
hydroxyapatite
sol-gel
porosity
mechanical properties
Opis:
Porous and alternative biografts for possible usages in orthopaedic applications were synthesized by the substitution of gelatin (G), cuttlefish backbone (C), meerschaum sepiolite (S) and hydroxyapatite (H). The effects of different proportions of the Gelatin substitutions on the mechanical properties and structure and cell viability properties of the fabricated biografts were investigated. Throughout the structure and mechanical evaluations, it was found that Gelatin substitution in the fabricated biografts increased the total porosity fraction, particularly for C13G75 and S13G75 biografts. Scanning Electron Microscope (SEM), X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) were used for characterization of the synthesized biografts. Furthermore, the cell viability tests for the synthesized biografts were carried out by using the osteoblast cell culture. Throughout the analysis, the synthesized C13G75 and S13G75 biografts generated the highest porosity and better correlation between mechanical properties and structural results contributing with highest cell viability rates.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 2; 11-22
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modified pid control design for roll fin actuator of nonlinear modelling of the fishing boat
Autorzy:
Alarçin, F.
Demirel, H.
Su, M. E.
Yurtseven, A.
Powiązania:
https://bibliotekanauki.pl/articles/258902.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
stability analyses
nonlinear roll motion
modified PID
CFD
Opis:
This study aims to reduce roll motion of a fishing boat which arises from disturbing hydrodynamic effects by means of fin roll stabilizer. It is assured that roll motion with nonlinear damping and restoring moment coefficients are down to the desired level through classical PID and modified PID algorithms. At the time of sailing, stability, a very important concept, was examined using Lyapunov direct method taking initial conditions into consideration, and it was noted that the system was generally stable. In addition, NACA 0015 model was used for the fin roll stabilizer, and flow analysis was carried out with Computational Fluid Dynamics (CFD) method. In the simulation results, when the same gains were used, modified PID controller algorithms were relatively more effective compared to PID in the fin roll stabilizer system.
Źródło:
Polish Maritime Research; 2014, 1; 3-8
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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