Future University In Egypt (FUE)
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Altagamoa Al Khames, Main centre of town, end of 90th Street
New Cairo
Egypt
Faculty of Engineering & Technology

Nada Mohamed Abd El Hamid Ali Mohamed

Basic information

Name : Nada Mohamed Abd El Hamid Ali Mohamed
Title: Assistant Lecturer
Personal Info: Nada Mohamed Abd El Hamid Ali Mohamed was born on 25/11/1989, Faculty of Engineering.

Education

Certificate Major University Year
Masters Structure engineering Ain Shams University - Faculty Of Engineering 2019
Bachelor civil engineering Helwan university - faculty of Engineering 2011

Teaching Experience

Name of Organization Position From Date To Date
Faculty of Engineering, FUE Univ. Teaching Assistant 01/02/2013 01/05/2014

Researches /Publications

Experimental Study for Strengthening of RC Rectangular Columns with Anchored CFRP Sheets - 01/0

Nada Mohamed Abd El Hamid Ali Mohamed

Mahmoud El-kateb, Amr Zaher

01/01/2019

Debonding between CFRP sheets and concrete surface is one of the most important modes of failure. The common solution to prevent this mode of failure is to extend the CFRP sheets by enough length to avoid debonding. A more advanced technique is to anchor the CFRP sheets to the concrete element using either steel or CFRP anchors. The aim of this research is to study the effect of using CFRP anchors on the capacity of concentric and eccentric RC columns. In order to achieve that goal, ten specimens of RC columns divided into two sets were tested. The first set was tested under concentric load, while the other set was tested under eccentric load. Each set had one control sample, while the other four samples were wrapped with CFRP bands. Two of the wrapped samples were anchored and the others were not. The spacing between CFRP wraps was varied between 80 and 200 mm. The results showed that the concentric and eccentric capacity of the sample increased with decreasing the spacing between CFRP bands as long as the eccentricity is small enough to cause compression failure mode. But for samples with tension failure caused by large eccentricity, the CFRP bands have no effect on the capacity. It was also noted that anchors have no significant effect on the axial capacity of the samples.

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Experimental Study for Strengthening of RC Rectangular Columns with Anchored CFRP Sheets - 01/0

Nada Mohamed Abd El Hamid Ali Mohamed

Mahmoud El-kateb, Amr Zaher

01/01/2019

Debonding between CFRP sheets and concrete surface is one of the most important modes of failure. The common solution to prevent this mode of failure is to extend the CFRP sheets by enough length to avoid debonding. A more advanced technique is to anchor the CFRP sheets to the concrete element using either steel or CFRP anchors. The aim of this research is to study the effect of using CFRP anchors on the capacity of concentric and eccentric RC columns. In order to achieve that goal, ten specimens of RC columns divided into two sets were tested. The first set was tested under concentric load, while the other set was tested under eccentric load. Each set had one control sample, while the other four samples were wrapped with CFRP bands. Two of the wrapped samples were anchored and the others were not. The spacing between CFRP wraps was varied between 80 and 200 mm. The results showed that the concentric and eccentric capacity of the sample increased with decreasing the spacing between CFRP bands as long as the eccentricity is small enough to cause compression failure mode. But for samples with tension failure caused by large eccentricity, the CFRP bands have no effect on the capacity. It was also noted that anchors have no significant effect on the axial capacity of the samples.

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In vitro and in vivo investigation for optimization of niosomal ability for sustainment and bioavailability enhancement of diltiazem after nasal administration - 01/1

Nada Mohamed Abd El Hamid Ali Mohamed

Haider, M., Ibrahim, M

01/11/2016

Diltiazem hydrochloride (DTZ) is a calcium channel antagonist depicted by extensive first pass metabolism and low oral bioavailability. The aim of this work was to develop niosomes for potential nasal delivery of DTZ. Niosomes protect hydrophilic drugs inside their core while nasal route offers both rapid onset and evasion of first-pass metabolism. Niosomes were prepared using a combination of Span 60 or Brij-52 with cholesterol (CHOL) in different molar ratios followed by determination of entrapment efficiency, particle size and in vitro drug release. A parallel design was adopted to evaluate the pharmacokinetic performance of DTZ-loaded niosomes in male Wistar rats. Non-compartmental analysis was performed where Cmax, Tmax, t1/2, MRT, area under the release curve (AUC) and Ke were assessed. The prepared niosomes were spherical with mean particle size 0.82–1.59 μm. Span 60-cholesterol niosomes (1:1 molar ratio) showed the highest entrapment and release efficiencies. In vivo study revealed an increase in MRT, t1/2 and AUC with a decrease in Ke. In conclusion, nasal niosomal formulation of DTZ expressed suitable pharmacokinetic parameters and bioavailability through prolonged duration of action inside the body as well as low rate of elimination depicting a promising alternate to the conventional oral route.

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