Autor: Turki, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Existence and asymptotic behavior of positive continuous solutions for a nonlinear elliptic system in the half space
Autorzy:: Turki, S.
Powiązania:: https://bibliotekanauki.pl/articles/255934.pdf
Data publikacji:: 2012
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: asymptotic behaviour
elliptic system
regular equation
Opis:: This paper deals with the existence and the asymptotic behavior of positive continuous solutions of the nonlinear elliptic system [formula] in the half space [formula] where α, β ≥ 1and r, s .≥ 0. The functions p and q are required to satisfy some appropriate conditions related to the Kato class [formula]. Our approach is based on potential theory tools and the use of Schauder's fixed point theorem.
Źródło:: Opuscula Mathematica; 2012, 32, 4; 783-795
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Fabrication of a high wear resistance AA7075/AL2O3 composites via liquid metallurgy process
Autorzy:: Sivaraman, R.
Jalil, Abduladheem Turki
Aravindhan, Surendar
Nan, Zhao
Vini, M. Heydari
Daneshmand, S.
Powiązania:: https://bibliotekanauki.pl/articles/27312401.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: zużycie
kompozyty
odlewanie
AA7075
Al2O3
wear
composites
stir casting
Opis:: In the present study, AA7075/Al2O3 composites have been fabricated via liquid metallurgy process. AA7075 alloy and Al2O3 particles were taken as the base matrix and reinforcements, respectively. Then, contents of 3 and 6 wt. % of Al2O3 subdivisions were added into the AA7075 matrix. To improve wettability and distribution, reinforcement particles were pre-heated to a temperature of 550°C for each composite sample. A hardened EN32 steel disc as the counter face was used to evaluate the wear rate pin-on-disc. The results showed that the wear rate of the AA/Al2O3 composites was smaller than that of the monolithic AA7075 samples. Finally, the worn surfaces of samples were investigated by SEM.
Źródło:: International Journal of Applied Mechanics and Engineering; 2022, 27, 4; 205--210
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Improvement of Efficiency in CdS Quantum Dots Sensitized Solar Cells
Autorzy:: Wageh, S.
Al-Ghamdi, A.
Soylu, M.
Al-Turki, Y.
El Shirbeeny, W.
Yakuphanoglu, F.
Powiązania:: https://bibliotekanauki.pl/articles/1399329.pdf
Data publikacji:: 2013-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 85.35.Be
88.40.hj
72.80.Vp
68.47.Gh
Opis:: CdS quantum dots were coated on $TiO_2$ layer by successive ionic layer adsorption and reaction method. An efficient photovoltaic energy conversion and significant quantum-size effect were observed. The magnitude of the short-circuit photocurrent density $J_{SC}$ was found to be approximately 6.01 $mA//cm^2$ for graphene oxide-incorporated $CdS//TiO_2$ solar cell, while the $J_{SC}$ of only CdS-sensitized solar cells was lower than 4.40 $mA//cm^2$. The efficiency of the $CdS//TiO_2$ solar cell with a graphene oxide layer containing CdS QDs was 60% higher than that of the $CdS//TiO_2$ solar cell. The cell efficiency was remarkably improved with the graphene oxide-incorporation. The carrier recombination of the QDs sensitized solar cells based on CdS-coated $TiO_2$ was significantly suppressed due to photogenerated charge carrier transports resulting from the presence of graphene oxide.
Źródło:: Acta Physica Polonica A; 2013, 124, 4; 750-754
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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