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Selective Electrochemical Detection of Epinephrine Using Gold
Nanoporous Film

Research Abstract

Epinephrine (EP) is one of the important catecholamine neurotransmitters that play an important role in the mammalian
central nervous system. Therefore, it is necessary to determine the change of its concentrations. Nanoporous materials have
wide applications that include catalysis, energy storages, environmental pollution control, wastewater treatment, and sensing
applications. These unique properties could be attributable to their high surface area, a large pore volume, and uniform pore
sizes. A gold nanoporous layer modified gold electrode was prepared and applied for the selective determination of epinephrine
neurotransmitter at low concentration in the presence of several other substances including ascorbic acid (AA) and uric acid (UA).
The constructed electrode was characterized using scanning electron microscopy and cyclic voltammetry. The resulting electrode
showed a selective detection of epinephrine with the interferences of dopamine and uric acid over a wide linear range (from50

Research Authors
Dina M. Fouad and Waleed A. El-Said
Research Department
Research Journal
Journal of Nanomaterials
Research Pages
pp. 1 - 8
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2016

Selective Electrochemical Detection of Epinephrine Using Gold
Nanoporous Film

Research Abstract

Epinephrine (EP) is one of the important catecholamine neurotransmitters that play an important role in the mammalian
central nervous system. Therefore, it is necessary to determine the change of its concentrations. Nanoporous materials have
wide applications that include catalysis, energy storages, environmental pollution control, wastewater treatment, and sensing
applications. These unique properties could be attributable to their high surface area, a large pore volume, and uniform pore
sizes. A gold nanoporous layer modified gold electrode was prepared and applied for the selective determination of epinephrine
neurotransmitter at low concentration in the presence of several other substances including ascorbic acid (AA) and uric acid (UA).
The constructed electrode was characterized using scanning electron microscopy and cyclic voltammetry. The resulting electrode
showed a selective detection of epinephrine with the interferences of dopamine and uric acid over a wide linear range (from50

Research Authors
Dina M. Fouad and Waleed A. El-Said
Research Department
Research Journal
Journal of Nanomaterials
Research Member
Research Pages
pp. 1 - 8
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2016

Microbial Gibberellins Impact on Zea mays (L.) Plants under Different Levels of Water Salinity

Research Abstract

THESE days green advancements of phytohormones have a critical place in industrial food process displace the chemical manufacturing which causes genuine dangers by gathered in the environment, from these hormones; gibberellin has an industrial significance as it’s a plant development controller hormone. Fungi produced several important substances with biological impact; from these substance plant hormones production involves great interest in agriculture. From different fungal isolates tested for gibberellins production, Fusarium oxysporum represented as a hopefulfungus for microbial gibberellin generation conducted 268.9±6.27 mg/l gibberellic acid with productivity rate 38.42 mg/l/day with succeeded capacity to apply in the field. In vivo application of microbial gibberellic acid occurred in pot experiment on Zea mays (L.) plants under water salinity stress. Synergetic development in maize plants exhibited with expanding microbial gibberellin concentrations until 150 ppm under water salinity stress and then no huge diverse was cleared.Increasing in plant weight and height observed in compared to the non-treated plants.

Research Authors
Mohamed Hefzy Mohamed and Ghada Abd-Elmonsef Mahmoud
Research Journal
Egyptian Journal of Soil Science
Research Member
Research Pages
373- 382
Research Publisher
©2018 National Information and Documentation Center (NIDOC)
Research Rank
2
Research Vol
53 (3)
Research Website
http://ejss.journals.ekb.eg/article_19527.html
Research Year
2018

Application of microbial gibberellins produced by Fusarium camptoceras KU215707 on Zea mays (L.) plants under different levels of water salinity

Research Abstract

NULL

Research Authors
Mohamed Hefzy Mohamed and Ghada Abd-Elmonsef Mahmoud
Research Journal
THE NINTH INTERNATIONAL CONFERENCE FOR DEVELOPMENT AND ENVIROMENT IN THE ARAB WORLD
Research Member
Research Pages
pp 68
Research Publisher
NULL
Research Rank
3
Research Vol
NULL
Research Website
http://www.aun.edu.eg/conferences/auces/index.html
Research Year
2018

The detrimental effect of spontaneous emission in quantum free electron lasers: A
discrete Wigner model

Research Abstract

We study the spontaneous emission in high-gain free-electron lasers operating in the quantum regime
and its detrimental effect on coherent emission. A quantum model describing the coherent and spontaneous
emission in free electron lasers has been recently proposed and investigated [G. R. M. Robb
and R. Bonifacio, Phys. Plasmas 19, 073101 (2012)]. The model is based on a Wigner distribution
describing the electron beam dynamics, coupled to Maxwell equations for the emitted radiation field.
Here, we rephrase the model in a more rigorous way, considering a discrete Wigner distribution
defined for a periodic space coordinate for which the electron momentum is discrete. From its numerical
solution, we find good agreement with the approximate continuous model. In the quantum
regime of the free-electron laser, we obtain a simple density matrix equation for two momentum
states, where the role of the spontaneous emission has a clear interpretation in terms of coherence
decay and population transfer.

Research Authors
H. Fares, N. Piovella, and G. R. M. Robb
Research Department
Research Journal
Physics of Plasmas
Research Member
Research Pages
pp. 013111-013116
Research Publisher
NULL
Research Rank
1
Research Vol
Vol 25
Research Website
NULL
Research Year
2018

Density matrix approach for quantum free-electron lasers

Research Abstract

The density matrix in the Lindblad form is used to describe the behavior of the Free-Electron Laser (FEL) operating in a quantum regime. The detrimental effects
of the spontaneous emission on coherent FEL operation are taken into account. It is shown that the density matrix formalism provides a simple method to describe
the dynamics of electrons and radiation field in the quantum FEL process. In this work, further insights on the key dynamic parameters (e.g., electron populations,
bunching factor, radiation power) are presented. We also derive a simple differential equation that describes the evolution of the radiated power in the linear regime.
It is confirmed that the essential results of this work agree with those predicted by a discrete Wigner approach at practical conditions for efficient operation of
quantum FELs.

Research Authors
H. Fares, G.R.M. Robb, N. Piovella
Research Department
Research Journal
Nuclear Inst. and Methods in Physics Research, A
Research Member
Research Pages
pp. 276–281
Research Publisher
NULL
Research Rank
1
Research Vol
Vol 909
Research Website
NULL
Research Year
2018

Parallel Multi-Core CPU and GPU for Fast and
Robust Medical Image Watermarking

Research Abstract

Securing medical images are a very essential process in medical image authentication. Medical
image watermarking is a very popular tool to achieve this goal. In this paper, an extremely fast, highly
accurate, and robust algorithm is proposed for watermarking both gray-level and color medical images.
In the proposed method, a scrambled binary watermark is embedded in the host medical image. Simplified
exact kernels are used to compute the moments of the polar complex exponential transform (PCET) for
the host gray-level images and the moments of the quaternion PCET for the host color images without
approximation errors. The stability of the computed moments enables us to use higher order moments in
a perfect reconstruction of the watermarked medical images. The accurate moment invariant to rotation,
scaling, and translation ensures the robustness of the proposed watermarking algorithm against geometric
attacks. Performed experiments clearly show very high visual imperceptibility and robustness to different
levels of geometric distortions and common signal processing attacks. The implementation of parallel
multi-core CPU and GPU result in a tremendous reduction of the overall watermarking times. For a color
image of size 256 × 256, the watermarking time is accelerated by 20× and 11× using a GPU and a CPU
with 16 cores, respectively.

Research Authors
KHALID M. HOSNY , MOHAMED M. DARWISH , KENLI LI ,AND AHMAD SALAH
Research Journal
IEEE Access
Research Pages
77212-77225
Research Publisher
IEEE
Research Rank
1
Research Vol
Volume: 6, Issue:1
Research Website
https://ieeexplore.ieee.org/document/8574023?arnumber=8574023&source=authoralert
Research Year
2018

A direct discontinuous Galerkin method for fractional convection-diffusion and Schrödinger-type equations

Research Abstract

NULL

Research Authors
Tarek Aboelenen
Research Department
Research Journal
The European Physical Journal Plus
Research Pages
NULL
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2018

Synthesis and evaluation of chromene-based
compounds containing pyrazole moiety as
antimicrobial agents

Research Abstract

With an intention to synergize the antimicrobial
activity of 1,3-diphenyl pyrazole and chromene derivatives,
20 hybrid compounds were synthesized and evaluated
for their antimicrobial activity. Structures of the newly
synthesized compounds were established by elemental
analysis and spectral data. All compounds were evaluated
for their antimicrobial activity against Gram positive and
Gram negative bacteria and antifungal activity by a well
diffusion method. Compounds 8, 10, 16 and 21 show reasonable
antibacterial and antifungal activity.

Research Authors
Mohamed Salah K. Youssef, Ahmed Abdou O. Abeed* and Talaat I. El-Emary
Research Department
Research Journal
Heterocycl. Commun.
Research Member
Research Pages
pp. 55–64
Research Publisher
NULL
Research Rank
1
Research Vol
Vol.23 - No. 1
Research Website
NULL
Research Year
2017

Synthesis and evaluation of chromene-based
compounds containing pyrazole moiety as
antimicrobial agents

Research Abstract

With an intention to synergize the antimicrobial
activity of 1,3-diphenyl pyrazole and chromene derivatives,
20 hybrid compounds were synthesized and evaluated
for their antimicrobial activity. Structures of the newly
synthesized compounds were established by elemental
analysis and spectral data. All compounds were evaluated
for their antimicrobial activity against Gram positive and
Gram negative bacteria and antifungal activity by a well
diffusion method. Compounds 8, 10, 16 and 21 show reasonable
antibacterial and antifungal activity.

Research Authors
Mohamed Salah K. Youssef, Ahmed Abdou O. Abeed* and Talaat I. El-Emary
Research Department
Research Journal
Heterocycl. Commun.
Research Pages
pp. 55–64
Research Publisher
NULL
Research Rank
1
Research Vol
Vol.23 - No. 1
Research Website
NULL
Research Year
2017
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