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Influence of the phase damping for two-qubits system
in the dispersive reservoir

Research Abstract
Ananalytical solution of the master equation for two qubits-field system in the dispersive reservoir are investigated, the qubits are initially in werner states. Under the influence of the damping we investigate the quantum correlation in a two-qubit based on measurement-induced disturbance (MID). We compare MID and entanglement measured by negativity and illustrate their different characteristics. We find the effect of damping on MID is weaker than negativity. Negativity will experience a sudden transition but this will not happen for MID.
Research Authors
A.-S. F. Obada • H. A. Hessian • A.-B. A. Mohamed • M. Hashem
Research Department
Research Journal
Quantum Inf Process
Research Pages
PP. 1947–1956
Research Rank
2
Research Vol
Vol. 12
Research Year
2013

Influence of the phase damping for two-qubits system
in the dispersive reservoir

Research Abstract
Ananalytical solution of the master equation for two qubits-field system in the dispersive reservoir are investigated, the qubits are initially in werner states. Under the influence of the damping we investigate the quantum correlation in a two-qubit based on measurement-induced disturbance (MID). We compare MID and entanglement measured by negativity and illustrate their different characteristics. We find the effect of damping on MID is weaker than negativity. Negativity will experience a sudden transition but this will not happen for MID.
Research Authors
A.-S. F. Obada • H. A. Hessian • A.-B. A. Mohamed • M. Hashem
Research Department
Research Journal
Quantum Inf Process
Research Member
Research Pages
PP. 1947–1956
Research Rank
2
Research Vol
Vol. 12
Research Year
2013

Influence of the phase damping for two-qubits system
in the dispersive reservoir

Research Abstract
Ananalytical solution of the master equation for two qubits-field system in the dispersive reservoir are investigated, the qubits are initially in werner states. Under the influence of the damping we investigate the quantum correlation in a two-qubit based on measurement-induced disturbance (MID). We compare MID and entanglement measured by negativity and illustrate their different characteristics. We find the effect of damping on MID is weaker than negativity. Negativity will experience a sudden transition but this will not happen for MID.
Research Authors
A.-S. F. Obada • H. A. Hessian • A.-B. A. Mohamed • M. Hashem
Research Department
Research Journal
Quantum Inf Process
Research Pages
PP. 1947–1956
Research Rank
2
Research Vol
Vol. 12
Research Year
2013

Effect of the Anodization Parameters on the Volume Expansion of Anodized Aluminum Films

Research Abstract
The effect of anodization parameters, e.g. anodizing voltage, anodizing current, duration time, electrolyte temperature, electrolyte type and concentration, on the volume expansion of anodized Al, Al-1wt%Si and Al-1%Cu thin films have been studied. The volume expansion factor of anodic porous alumina is found to vary from 1.32 to 2.08, depending on the anodizing voltage, anodizing current density and electrolyte type. The electrolyte temperature and impurity type have slight effect on the volume expansion factor. The relation between the pore density of porous alumina and the anodizing voltage is found to follow the relation NP=9.4×1010exp(-0.042V). In addition, the current efficiency during the anodization was determined to be about 83%.
Research Authors
Alaa M. Abd-Elnaiem, A.M. Mebed, A. Gaber, M.A. Abdel-Rahim
Research Department
Research Journal
International Journal of Electrochemical Science
Research Pages
PP.10515 - 10525
Research Rank
1
Research Vol
8
Research Website
http://www.electrochemsci.org/papers/vol8/80810515.pdf
Research Year
2013

Thermally inducedstructuralchangesandopticalproperties
of tindioxidenanoparticlessynthesizedbyaconventional
precipitationmethod

Research Abstract
Tin dioxide(SnO2) nanoparticlesweresynthesizedbyaconventionalprecipitation methodusingthereactionbetweentinchloridepentahydrateandammoniasolutions. The obtainedpowderswerecalcinedatvariedtemperaturesfrom300to1050 1C, and then characterizedbyusingthermogravimetricanalysis,differentialthermalanalysisand Fourier transformationinfraredspectroscopy.Theaveragecrystallitesize,determinedby x-ray diffraction,wasfoundtobeintherangeof3.45–23.5 nm.Theanalysisexhibiteda tetragonalphase.Theactivationenergyofcrystalgrowthwascalculatedandfoundtobe 12.12kJ/mol.Themicrostructureofnanoparticleswasexaminedbyhighresolution transmission electronmicroscopy.OpticalpropertieswereinvestigatedbyaUV–vis absorptionspectrophotometer.Thecalculatedopticalbandgapliesbetween4.75–4.25eV as aresultofincreasingthecalcinationtemperaturesandcrystallitesize.
Research Authors
A.Gaber , A.Y.Abdel-Latief,M.A.Abdel-Rahim,MahmoudN.Abdel-Salam
Research Department
Research Journal
Materials ScienceinSemiconductorProcessing
Research Pages
PP.1784–1790
Research Rank
1
Research Vol
Vol.16
Research Year
2013

Thermally inducedstructuralchangesandopticalproperties
of tindioxidenanoparticlessynthesizedbyaconventional
precipitationmethod

Research Abstract
Tin dioxide(SnO2) nanoparticlesweresynthesizedbyaconventionalprecipitation methodusingthereactionbetweentinchloridepentahydrateandammoniasolutions. The obtainedpowderswerecalcinedatvariedtemperaturesfrom300to1050 1C, and then characterizedbyusingthermogravimetricanalysis,differentialthermalanalysisand Fourier transformationinfraredspectroscopy.Theaveragecrystallitesize,determinedby x-ray diffraction,wasfoundtobeintherangeof3.45–23.5 nm.Theanalysisexhibiteda tetragonalphase.Theactivationenergyofcrystalgrowthwascalculatedandfoundtobe 12.12kJ/mol.Themicrostructureofnanoparticleswasexaminedbyhighresolution transmission electronmicroscopy.OpticalpropertieswereinvestigatedbyaUV–vis absorptionspectrophotometer.Thecalculatedopticalbandgapliesbetween4.75–4.25eV as aresultofincreasingthecalcinationtemperaturesandcrystallitesize.
Research Authors
A.Gaber , A.Y.Abdel-Latief,M.A.Abdel-Rahim,MahmoudN.Abdel-Salam
Research Department
Research Journal
Materials ScienceinSemiconductorProcessing
Research Pages
PP.1784–1790
Research Rank
1
Research Vol
Vol.16
Research Year
2013

Thermally inducedstructuralchangesandopticalproperties
of tindioxidenanoparticlessynthesizedbyaconventional
precipitationmethod

Research Abstract
Tin dioxide(SnO2) nanoparticlesweresynthesizedbyaconventionalprecipitation methodusingthereactionbetweentinchloridepentahydrateandammoniasolutions. The obtainedpowderswerecalcinedatvariedtemperaturesfrom300to1050 1C, and then characterizedbyusingthermogravimetricanalysis,differentialthermalanalysisand Fourier transformationinfraredspectroscopy.Theaveragecrystallitesize,determinedby x-ray diffraction,wasfoundtobeintherangeof3.45–23.5 nm.Theanalysisexhibiteda tetragonalphase.Theactivationenergyofcrystalgrowthwascalculatedandfoundtobe 12.12kJ/mol.Themicrostructureofnanoparticleswasexaminedbyhighresolution transmission electronmicroscopy.OpticalpropertieswereinvestigatedbyaUV–vis absorptionspectrophotometer.Thecalculatedopticalbandgapliesbetween4.75–4.25eV as aresultofincreasingthecalcinationtemperaturesandcrystallitesize.
Research Authors
A.Gaber , A.Y.Abdel-Latief,M.A.Abdel-Rahim,MahmoudN.Abdel-Salam
Research Department
Research Journal
Materials ScienceinSemiconductorProcessing
Research Member
Abdel-fatah Jaber Mohamoud Abd Allah Elbos
Research Pages
PP.1784–1790
Research Rank
1
Research Vol
Vol.16
Research Year
2013

Interaction of antitumor flavonoids with dsDNA
in the absence and presence of Cu(II)

Research Abstract
The binding of antitumor flavonoids, namely 3- hydroxyflavone (3HF) and hesperidin (Hesp) with dsDNA was investigated in the absence and presence of Cu(II) using cyclic voltammetry and square wave voltammetry at the hanging mercury drop electrode. The reduction currents of 3HF, 3HF-Cu complex, and the 3HF-β-cyclodextrin inclusion complex decreased after intercalation into dsDNA. The intercalation of Hesp into dsDNA is weak. dsDNA is reduced at a potential of −1.48 V overlaying the reduction of Hesp. In contrast, in the presence of Cu(II), the interaction of Hesp with dsDNA leads to a much stronger intercalation. The binding constants of the flavonoid-Cu complex with dsDNA were evaluated and calibration graphs for the determination of dsDNAwere obtained fromthe decrease in the peak current in the cyclic voltammograms of 3HF in the presence of dsDNA. The proposed method exhibited good recovery and reproducibility for indirect determination of dsDNA.
Research Authors
Yassin M. Temerk & Mohamed S. Ibrahim &
Mohamed Kotb & Wolfgang Schuhmann
Research Department
Research Journal
Anal Bioanal Chem
Research Pages
PP.3839–3846
Research Rank
1
Research Vol
Vol.405
Research Year
2013
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