A5037174339- Laser-induced spectroscopy and plasma
- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Ga2O3 and related materials
- Analytical chemistry methods development
- Bariatric Surgery and Outcomes
- Heavy metals in environment
- Mercury impact and mitigation studies
- Building Energy and Comfort Optimization
- Metal and Thin Film Mechanics
- Gastric Cancer Management and Outcomes
- Maternal and Perinatal Health Interventions
- Sustainable Building Design and Assessment
- Conducting polymers and applications
- Photodynamic Therapy Research Studies
- Photochemistry and Electron Transfer Studies
- Urban Design and Spatial Analysis
- Diamond and Carbon-based Materials Research
- Ectopic Pregnancy Diagnosis and Management
- Esophageal and GI Pathology
- Urban Heat Island Mitigation
- Surgical Sutures and Adhesives
- Liquid Crystal Research Advancements
- Pregnancy-related medical research
- Reconstructive Surgery and Microvascular Techniques
Cairo University
2009-2024
Egypt Nanotechnology Center
2020-2023
National Heart Institute
2022
Alexandria University
1998-2021
Mansoura University Hospital
2016-2021
Mansoura University
2016-2021
Universität Ulm
2009-2016
This research aims at investigating the potentials of parametric design optimization process over residential building to achieve more sustainable as well computational methodology in activate role computer not just a drafting or visualization tool. It also investigates essentiality and state art tools like Grasshopper, Octopus, Energy plus, Open studio, Radiance Daysim achieving an optimized design. A consists five stories is studied find best parameters which lead optimum performance...
This research focuses on the problem of design contemporary glass buildings and facades in a hot dry area such as Egypt, that is based "western" concept facade design, without any attention to according climate, or use how, type color show architectural identity character country. The result energy needed cool internal environment these very high, leading pressure total resources appearance blocks do not respect importance this study make designers users aware application appropriate types...
The development of new antimicrobial strategies that act more efficiently than traditional antibiotics is becoming a necessity to combat multidrug-resistant pathogens. Here we report the efficacy laser-light-irradiated 5,10,15,20-tetrakis(m-hydroxyphenyl)porphyrin (mTHPP) loaded onto an ethylcellulose (EC)/chitosan (Chs) nanocomposite in eradicating multi-drug resistant Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans. Surface loading ethylcelllose/chitosan composite with...
Modern technology has greatly affected buildings' envelope, which a significant impact on the environmental considerations, users comfort and energy consumption. The paper addresses subject of envelopes external skin configurations, due to its importance as first element facing environment. contemporary studies sustainability have made such topic quite significant, especially in context addressed research: residential buildings Alexandria, Egypt. Such domain recently generated broad debate...
This pioneering study utilizes Flame Atomic Absorption Spectroscopy (FAAS) and Picosecond Laser-Induced Breakdown (Ps-LIBS) to quantify heavy metal contents in samples of Lactuca sativa L. Trifolium alexandrinum collected from Banha Giza, Egypt for the first time. In order enhance performance Ps-LIBS, laser parameters were carefully optimized. Expressly, energy was set 100 ± 5% J/cm², pulse duration calibrated 170 picoseconds, 1064 nm Nd: YAG pulses employed. optimization facilitated...
A developed polyvinyl alcohol/polyethylene glycol (PVA/PEG) blend containing different concentrations of graphene oxide GO (PVA/PEG-GO) as dialectic materials for energy storage devices was studied. 80 wt% PVA/ 20 PEG were doped with 0.5, 1.5, and 3 prepared using the solution casting technique. The electrical properties, dielectric constant (𝜺'), loss (𝜺"), ac conductivity (σac), in a wide range frequencies, extensively investigated. strongly enhanced (energy storage) produced PVA/PEG...
The presence of heavy metals in the environment presents a significant concern, as it poses substantial threat to both human health and food safety. Accurate measurement identification diverse sample types, encompassing water, soil, food, biological materials, necessitate utilizing various spectroscopic techniques. In this comprehensive review, meticulous examination three prevalent methodologies employed for metal analysis soil is undertaken: Inductively Coupled Plasma Optical Emission...
Background: Many expressions were used to define the defect that is seen by ultrasound after cesarean section (CS) namely scar defect, niche, isthmocele, uterine pouch or diverticula. Objective: To compare accuracy of 2 dimensional sonohysterography (2D SHG) 3 (3D in evaluating depth (D), base width (BW), (W) and residual myometrial thickness (RMT) women with secondary infertility establishment a standard criteria; Alalfy simple rules for assessment. Patients Methods: This was an...
In this paper, we investigate a new method to control the plasma electron number density of copper metal using near-infrared (NIR) picosecond Nd:YAG laser-induced spectroscopy (LIPS) technique. The applied laser parameters are as follows; pulse energy and intensity varied from 29.2 59.4 mJ ± 3% 6.01×10 10 12.35×10 W/cm 2 5%, respectively, for single at 170 ps duration, beam diameter about 0.5 0.1 mm. By considering Stark broadening specific spectral line, can be calculated neutral line 521.8...
Abstract The surface conductivity of hydrogen (H)‐terminated diamond still suffers from instabilities at high temperature especially in O‐containing atmosphere and/or under power FET device operation. For devices based on this H‐induced concept, stabilization is thus essential. In investigation AlN, deposited by MOCVD 800 °C, has been used as passivation and gate dielectric Surface Channel MESFET MISFET structures. Despite the deposition temperature, channel present case both structures can...
The development of novel ionic liquid crystals for energy storage applications has gained significant attention in recent years due to their potential develop the field storage. Ionic represent a unique class materials with high conductivity and thermal stability, making them ideal candidates use advanced devices. This research aims explore fundamental properties, structure performance these materials, goal advancing practical application next-generation technologies. By understanding...
Diamond surface channel field effect transistors were passivated with thin AlN layers grown by metal-organic chemical vapor deposition in order to improve the stability of surface-near p-type channel. Electrical characterization showed that conductivity diamond is preserved during overgrowth if process temperature does not exceed 800 °C. However, sheet carrier density decreased a factor about 5 compared unpassivated hydrogen-terminated surface. A combination TEM and XPS analysis this induced...
The problem of informal areas is the most significant urban challenge facing third world countries. Most population has become dwellers. These consume many resources and suffer from bad conditions. Therefore need arose to transform them into sustainable societies in order save improve their quality life. This paper discusses sustainability as means achieving quality, efficiency improvements using three pillars sustainability: social, economic environmental. It also aims at carrying out a...