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Wyszukujesz frazę "Bakhtiari, A." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Antimicrobial activity of some Lactobacillus species against intestinal pathogenic bacteria
Autorzy:
Tebyanian, H.
Bakhtiari, A.
Karami, A.
Kariminik, A.
Powiązania:
https://bibliotekanauki.pl/articles/11126.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2017, 65
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of physical and chemical factors in production of alkaline protease enzyme by Bacillus strains
Autorzy:
Tebyanian, H.
Mirhosseiny, S.H.
Bakhtiari, A.
Karami, A.
Dadseresht, S.
Otroshi, B.
Powiązania:
https://bibliotekanauki.pl/articles/11529.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 71
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural Design and Characterization of $BaMg_{x}Co_{2-x}Fe_{16}O_{27}$ Hexaferrites Based on ab initio Computations
Autorzy:
Bakhtiari, M.
Nabiyouni, G.
Besharati-Seidani, A.
Powiązania:
https://bibliotekanauki.pl/articles/1378257.pdf
Data publikacji:
2014-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Gg
71.20.-b
75.75.-c
71.15.Mb
71.15.Dx
Opis:
Structural design of barium hexaferrites $BaMg_xCo_{2-x}Fe_{16}O_{27}$ (x=0.0, 1, 2) has been studied, and the magnetic and electronic structure of that has then been investigated using first principle total energy calculation. All calculations are based on the density functional theory. In order to improve the description of strongly correlated 3d electrons of iron, the general gradient approximation plus Hubbard U (GGA+U) method is used. We found that in the lowest energy configuration Mg and Co ions preferentially occupy the 6g sites. With the increase of Mg content x, the energy gap of $BaMg_xCo_{2-x}Fe_{16}O_{27}$ increases but the lattice constant of unit cell decreases. The magnetic moment of the unit cell for Mg content x=0, 1, and 2 are calculated to be 52, 49 and 46 $μ_{B}$/cell, respectively, in agreement with previous experimental results. The substitutions of Mg and Co at the $BaFe_2^{2+}Fe_{16}^{3+}O_{27}$ decrease electrical conductivity and transit it from a half-metal to semiconductor material. Based on our calculations on electronic band structure, the $BaFe_2Fe_{16}O_{27}$ (BFFO) is a weak half-metal, but $BaMg_2Fe_{16}O_{27}$ (BMFO), $BaMgCoFe_{16}O_{27}$ (BMCFO) and $BaCo_2Fe_{16}O_{27}$ (BCFO) are semiconductors. The electrical resistivity increases by increasing Mg and Co contents due to increase in porosity which prevents the hopping of charge carriers.
Źródło:
Acta Physica Polonica A; 2014, 126, 6; 1288-1292
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of some fungicides against the growth inhibition of Sclerotinia sclerotiorum mycelial compatibility groups
Autorzy:
Dalili, A.
Bakhtiari, S.
Barari, H.
Aldaghi, M.
Powiązania:
https://bibliotekanauki.pl/articles/66352.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fungicide effect
pathogen
growth inhibition
Sclerotinia sclerotiorum
mycelial compatibility group
Brassica napus
fungicide
Opis:
Sclerotinia sclerotiorum (Lib.) de Bary, the causal agent of Sclerotinia stem rot, is one of the most important pathogens of Brassica napus L. in northern Iran. In this study, 13 mycelial compatibility groups (MCGs) of the fungus were identified among 31 isolates sampled from four regions of Mazandaran province, Iran. Effective fungicides are useful in the integrated management of the disease. So, the effect of tebuconazole, propiconazole, cyproconazole, and Rovral-TS at five doses (0.0001, 0.001, 0.01, 0.1, and 1 ppm) was studied on the growth inhibition of S. sclerotiorum as in vitro tests. Maximum inhibition (100%) of S. sclerotiorum mycelial growth was obtained by the highest dose (1 ppm) of all tested fungicides, as well as by the doses of 0.1 and 0.01 ppm of propiconazole, cyproconazole, and tebuconazole. In this investigation, the reaction of S. sclerotiorum isolates belonging to different MCGs was evaluated against tebuconazole, propiconazole, cyproconazole, and Rovral-TS at their EC50 ranges. The results revealed that there was high variation of S. sclerotiorum MCGs against different fungicides. The inhibition percentage varied between 4.29% and 71.72%.
Źródło:
Journal of Plant Protection Research; 2015, 55, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Catalytic synthesis of warfarin acetals by using different heteropolyacid catalysts
Autorzy:
Gharib, A.
Jahangir, M.
Roshani, M.
Scheeren, J. W.
Mohadeszadeh, S.
Bakhtiari, L.
Lagzian, S.
Powiązania:
https://bibliotekanauki.pl/articles/778836.pdf
Data publikacji:
2011
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
heteropolikwas
katalizator
warfaryna
acetale cykliczne
heteropoly acid
Preyssler
catalyst
Warfarin
cyclic acetals
Opis:
In this research, we report on the synthesis of warfarin acetals by using Preyssler's anion, [NaP5W30O110]-14 and heteropolyacids (HPAs) catalysts. This reaction was performed using methanol and ethanol at reflux temperature conditions. Under these conditions we have excellent yields and high selectivity. Preyssler heteropolyacid catalyst were easily recycled recovery and reused without the loss of its catalytic activities. The synthesis of warfarin acetals has been achieved using the catalytic amounts of green, inexpensive and eco-friendly Keggin types heteropolyacids. The products were obtained in high yields.
Źródło:
Polish Journal of Chemical Technology; 2011, 13, 3; 5-11
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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