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Tahira Amer Bashir Ziya,Muhammad Naeem Ashiq,고재현,Farooq Bashir,Ghulam Shabbir 한국물리학회 2020 새물리 Vol.70 No.2
The Thermal properties of nano-crystalline CeO2, FeO, MgO, Ho2O3, NiO and Y2O3, prepared by using the co-precipitation method, have been investigated using X-ray diffraction (XRD) at room temperature. The integrated intensity data obtained from the X-ray diffraction experiments was utilized to determine the temperature factor (B(T)), mean square amplitude of vibration (u2(T)), Debye temperature (D), melting point (Tm) and activation energy for vacancy formation (Ef ). The values of (B(T)) and (u2(T)) in the present case were found to be large while the values of D and Ef were found to be lower than the corresponding values reported for the binary oxides with large particle sizes. This suggests that a decrease in particle size from micro to nano-scale may induce weakening of the bonds. On a nano-scale as compared to ordinary size, the values of the melting points were found be higher for the heavier atomic oxides.
Muhammad Zakria Butt,Dilawar Ali,Muzamil Aftab,Farooq Bashir,M. Shahid Pervaiz,M. Usman Tanveer,M. Waqas Khaliq 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.9
Five W-alloy specimens, containing 8.57% Ni, 6.34% Cu, and 1.34% Mo, were bombarded with 5.2 MeV singly chargednitrogen ions. The ions dose range was 5 × 1014–1 × 1016 ions/cm2. XRD patterns portrayed diffraction peaks of pure W aswell as of Cu0.4W0.6,MoNi4,and Ni4Wphases. Harris analysis showed that the preferentially oriented planes depend on thenitrogen ions dose. The structural parameters, namely lattice strain and crystallite size, vary with nitrogen ions dose alike. Same pattern is followed by surface hardness and electrical resistivity. The increase in the values of all the parameters withions dose is rapid in the range 0–1 × 1015 ions/cm2 and later on slow till the maximum ions dose 1 × 1016 ions/cm2. However,the interdependence of each parameter on the other ones was linear. Surface roughness of the specimens was found todecrease on increasing ions dose. On the other hand, surface hardness registers a rise as crystallite size increases, and hencefollows Inverse Hall–Petch relation.
Rauf, Abdur,Uddin, Ghias,Raza, Muslim,Ahmad, Aftab,Jehan, Noor,Ahmad, Bashir,Nisar, Muhammad,Molnar, Joseph,Csonka, Akos,Szabo, Diana,Khan, Ajmal,Farooq, Umar,Noor, Mah Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Pistagremic acid (PA) is a bioactive triterpenoid isolated from various parts of Pistacia integerrima plants. The aim of this research was to investigate PA for reversion of multidrug resistant (MDR) mediated by P-glycoprotein using rhodamine-123 exclusion study on a multidrug resistant human ABCB1 (ATP-binding cassette, sub-family B, member 1) gene-transfected mouse T-lymphoma cell line in vitro. Results were similar to those with verapamil as a positive control. Docking studies of PA and standard Rhodamine123 were carried out against a P-gp crystal structure which showed satisfactory results. Actually, PA cannot bind exactly where co-crystallized ligand of P-gp is already present. However, the docking study predicted that if a compound gives a lesser score then it may have some potency. The docking scores of PA and Rhodamine were similar. Therefore, we can conclude that there are certain important chemical features of PA which are responsible for the inhibiting potency of P-gp.