Ahmed El shenawy, Radu Zmeureanu,
Over the past decade, efforts have been made in developing the Sustainable Building (SB) assessment tools which enable all stakeholders to be aware of the consequences of various design choices and to assess the building performance. Currently, a large variety of existing SB tools, approaches, rating systems, indices and methods of assessment are available and used in the construction industry. Despite usefulness of existing assessment methods in contributing towards a more sustainable building, ...
Tópico(s): Environmental Impact and Sustainability
2012 - Elsevier BV | Building and Environment
Aly H. Atta, Ahmed El-Shenawy, Fathy A. Koura, Moamen S. Refat,
Selenium (IV) vitamin A complex as antioxidant drug design was prepared and characterized by microanalysis, conductance, infrared spectra, Raman laser spectra, 1HNMR spectra, scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and thermogravimetric (TG/DTG and DTA) tool of analyses. Vitamin A chelate was coordinated as a mono-dentate ligand through the oxygen atom of –OH hydroxyl group. Thermal degradation analyses discussed the removal of terminal methyl molecules in the first and second ...
Tópico(s): Thermal and Kinetic Analysis
2014 - Scientific Research Publishing | World Journal of Nano Science and Engineering
Ahmed El-Shenawy, Manal Diab, Mohamed Shemis, Maged El-Ghannam, Dalia Salem, Moustafa Abdelnasser, Mohamed Shahin, Mahmoud Abdel-Hady, Effat El-Sherbini, Mohamed Saber,
Helicobactor pylori (H. pylori) virulence markers would be useful to predict peptic ulcer disease (PUD) or gastric cancer. In Egypt, since inadequate data are present regarding H. pylori virulence–related genes in different age group patients with gastro-duodenal diseases, it becomes crucial to study the clinical status of cagA, vacA and iceA1 genotypes of H. pylori strains recovered from patients with dyspepsia. The study included 113 dyspeptic patients who were exposed to upper gastrointestinal ...
Tópico(s): Eosinophilic Esophagitis
2017 - Springer Science+Business Media | Egyptian Journal of Medical Human Genetics
Mohanad M. Hammad, Ahmed El-Shenawy, M.I. El Singaby,
In this work a design for self-tuning non-linear Fuzzy Proportional Integral Derivative (FPID) controller is presented to control position and speed of Multiple Input Multiple Output (MIMO) fully-actuated Autonomous Underwater Vehicles (AUV) to follow desired trajectories. Non-linearity that results from the hydrodynamics and the coupled AUV dynamics makes the design of a stable controller a very difficult task. In this study, the control scheme in a simulation environment is validated using dynamic ...
Tópico(s): Robotic Path Planning Algorithms
2017 - Public Library of Science | PLoS ONE
Foziah A. Al-Saif, Abeer A. El‐Habeeb, Moamen S. Refat, Abdel Majid A. Adam, Hosam A. Saad, Ahmed El-Shenawy, Hammad Fetooh,
The barbital (Bar) is one of the barbituric acid derivatives. It possesses a potent sedative-hypnotic property. Structural, thermal and morphological properties of the charge transfer (CT) products obtained from the reaction of barbital (Bar) with chloranilic acid (CLA), chloranil (CHL), TCNQ and DBQ π-acceptors were reported. The products were prepared in methanol media, isolated and fully characterized spectroscopically, thermally and morphologically using IR, 1H NMR, Raman, UV–Vis., TG, XRD and SEM ...
Tópico(s): Electrochemical Analysis and Applications
2019 - Elsevier BV | Journal of Molecular Liquids
Manal Diab, Ahmed El-Shenawy, Maged El-Ghannam, Dalia Salem, Moustafa Abdelnasser, Mohamed Shaheen, Mahmoud Abdel-Hady, Effat El-Sherbini, Mohamed Saber,
Antibiotic resistance of Helicobacter pylori (H. pylori) treatment is on the rise, and is affecting the efficacy of current used therapeutic regimens. We aimed to enhance the understanding of antimicrobial resistance rates of H. pylori strains recovered from patients at Theodor Bilharz Research Institute Hospital in Egypt, as a mandatory step before starting treatment. Mutant genes conferring metronidazole, amoxicillin, clarithromycin, and tetracycline resistance were detected in 60 H. pylori strains ...
Tópico(s): Gastric Cancer Management and Outcomes
2018 - Springer Science+Business Media | Egyptian Journal of Medical Human Genetics
Amira El-Far, Safia Samir, Eman El-Gebaly, Nahed Y. Taha, Ehab M. Fahmy, T. Diab, Ahmed El-Shenawy,
Methicillin-resistant Staphylococcus aureus (MRSA) biofilm infection is a major threat in Healthcare facilities. The search for biofilm inhibitors is essential to overcome the antibiotic resistance. Eugenol is a phyto-compound that possesses many biological properties. In this study, the aim was to estimate the effect of eugenol on biofilms of MRSA through quantifying the level of gene expression of three genes (IcaA, IcaD and SarA) involved in biofilm development.. Fifty MRSA biofilm producers collected ...
Tópico(s): Bacterial Identification and Susceptibility Testing
2021 - Elsevier BV | Infection Genetics and Evolution
Amira El-Far, Safia Samir, Eman El-Gebaly, Maysa Omar, Heba Dahroug, Ahmed El-Shenawy, Noha Salah Soliman, Doaa Gamal,
Background: Multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains of Pseudomonas aeruginosa are the leading cause of healthcare-associated infections worldwide. Objective: The aim was to identify the resistant phenotypes among P. aeruginosa and to characterize different aminoglycosides and carbapenem resistance genes as major mechanisms of resistance in these isolates, in Theodor Bilharz Research Institute (TBRI), a tertiary care hospital in Cairo, Egypt. Methods: During a period of ...
Tópico(s): Bacterial biofilms and quorum sensing
2021 - Dove Medical Press | Infection and Drug Resistance
Mohanad M. Hammad, Ahmed El-Shenawy, M.I. El Singaby,
This paper presents an inverse kinematic model for an Autonomous Underwater Vehicle (AUV) with 8 thrusters. The vehicle configuration allow the AUV to have a fully-actuated 6 Degrees of freedom (DOF). Rigid body dynamic model and water environment hydrodynamic model are used in this study. The model is implemented and tested using Matlab and Simulink. A 3D model of the AUV is designed for illustration in this work using Autodesk MAYA. Cascaded position and velocity control approach is studied. A conventional ...
Tópico(s): Inertial Sensor and Navigation
2017 - Springer International Publishing | Lecture notes in networks and systems
Manal Diab, Dalia Salem, Ahmed El-Shenawy, Amira El-Far, Aya Abdelghany, Alaa Awad, Inas El Defrawy, Mohamed Shemis,
Abstract Background Enterococci are intrinsically resistant to clinically achievable concentrations of aminoglycosides. However, high-level resistance to aminoglycosides (HLAR) is primarily due to the acquisition of genes encoding aminoglycoside-modifying enzymes (AMEs). Aminoglycosides along with cell wall inhibitors are given clinically for treating enterococcal infections. The current study was conducted to investigate the rate of HLAR and to determine aminoglycoside resistance encoding genes profile ...
Tópico(s): Bacterial Identification and Susceptibility Testing
2019 - Springer Science+Business Media | Egyptian Journal of Medical Human Genetics
Ahmed A. El-Shenawy, Mahmoud M. Ahmed, Heba F. Mansour, Saleh Abd El Rasoul,
Tópico(s): Analytical Methods in Pharmaceuticals
2017 - Springer Science+Business Media | AAPS PharmSciTech
Ahmed A. El-Shenawy, Wael A. Abdelhafez, Ahmed Ismail, Alaa A. Kassem,
Febuxostat (FXT) is a xanthine oxidase (XO) drug which indicated for the treatment of gout. FXT loaded nanosized ethosomes were prepared using cold method with varied concentrations of ethyl alcohol and soya lecithin (SL). The prepared ethosomes were characterized by size, entrapment efficiency (DEE), FT-IR, in vitro release, kinetic studies of in vitro release profile, in vitro skin permeation and deposition, and stability study. The selected ethosomal formulation was incorporated in HPMC gel and characterized ...
Tópico(s): Bee Products Chemical Analysis
2019 - Springer Science+Business Media | AAPS PharmSciTech
Mahmoud M. A. Elsayed, Moustafa O. Aboelez, Mohamed S. Mohamed, Reda A. Mahmoud, Ahmed A. El-Shenawy, Essam A. Mahmoud, Ahmed A. Al‐Karmalawy, Eman Y. Santali, Sameer Alshehri, Mahmoud Elkot Mostafa Elsadek, Mohamed A. El Hamd, H. E. Ramadan,
Hyperlipidemia is still the leading cause of heart disease in patients with hypertension. The purpose of this study is to make rosuvastatin calcium (ROS) and atenolol (AT) bilayer tablets to treat coexisting dyslipidemia and hypertension with a single product. ROS was chosen for the immediate-release layer of the constructed tablets, whereas AT was chosen for the sustained-release layer. The solid dispersion of ROS with sorbitol (1:3 w/w) was utilized in the immediate-release layer while hydroxypropyl ...
Tópico(s): Computational Drug Discovery Methods
2022 - Multidisciplinary Digital Publishing Institute | Pharmaceutics
Manal Diab, Mohamed Shemis, Doaa Gamal, Ahmed El-Shenawy, Maged El-Ghannam, Effat El-Sherbini, Mohamed Saber,
Infection with Helicobacter pylori (H. pylori) causes persistent gastritis that may progress to fatal gastric cancer. The cytotoxin-associated gene A protein (CagA), encoded by the cytotoxin-associated gene A (cagA) is the main virulence factor associated with more severe clinical outcomes. It is further divided into Western-type CagA and East Asian-type CagA. The East Asian-type CagA induces more cytoskeleton changes and is more likely to be associated with gastric cancer. In the current study we ...
Tópico(s): Veterinary medicine and infectious diseases
2018 - Springer Science+Business Media | Egyptian Journal of Medical Human Genetics
Ahmed A. El-Shenawy, Reda A. Mahmoud, Essam A. Mahmoud, Mohamed S. Mohamed,
Tópico(s): Drug Solubulity and Delivery Systems
2021 - Springer Science+Business Media | AAPS PharmSciTech
Azza A. Hasan, Abd El, H. E. Ramadan, Mahmoud Abd Elghany, Shereen A. Sabry,
... in vitro/in vivo evaluationReham A. Abd Elkarim, Ahmed A. El-Shenawy, Wael A. Abdelhafez, Shaaban K. Osman
Tópico(s): Lipid metabolism and biosynthesis
2020 - Open Science Publishers LLP | Journal of Applied Pharmaceutical Science
Ahmed A. El-Shenawy, Mahmoud M. A. Elsayed, Gamal M. K. Atwa, Mohammed A. S. Abourehab, Mohamed S. Mohamed, Mohammed M. Ghoneim, Reda A. Mahmoud, Shereen A. Sabry, Walid Anwar, Mohamed El‐Sherbiny, Yasser A. Hassan, Amany Belal, H. E. Ramadan,
Gefitinib (GFT) is a tyrosine kinase inhibitor drug used as a first-line treatment for patients with advanced or metastatic non-small cell lung, colon, and breast cancer. GFT exhibits low solubility and hence low oral bioavailability, which restricts its clinical application. One of the most important trends in overcoming such problems is the use of a vesicular system. Cubosomes are considered one of the most important vesicular systems used to improve solubility and oral bioavailability. In this ...
Tópico(s): Glycosylation and Glycoproteins Research
2023 - Multidisciplinary Digital Publishing Institute | Pharmaceutics
Ahmed El-Shenawy, A. H. ATTA, F. A. KORA, Khaled M. Elsabawy,
Computational modeling and visualization studies were performed using computerized advanced programs. The theoretical investigations was succeeded to design Graphene-Graphite mixtures nano-surface catalyst to apply as nano-molecular sieving materials.The synthesized molecular sieving was carefully characterized by both of XRD and AFM to prove the internal structure of the new molecular sieving material. Capture efficiency towards some selected organic herbicides (such as carbaryl pesticide) was examined ...
Tópico(s): Inorganic and Organometallic Chemistry
2013 - Oriental Scientific Publishing Company | Oriental Journal Of Chemistry
Aly H. Atta, Ahmed El-Shenawy, Moamen S. Refat, Khaled M. Elsabawy,
This study reports the synthesis of the gold nano-particles assembly mediated by some amino acids, such as ornithine (Orn), isoleucine (i-Leu), serine (Ser) and histidine (His). The structural characterization of [Au2(AA)2(Cl)2]2+Cl2 (where AA = Orn, i-Leu, Ser and His) compounds were done by using elemental analysis, molar conductance, FT-IR, Raman, UV–vis, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) spectroscopy. It has been found from the elemental ...
Tópico(s): Electrochemical Analysis and Applications
2013 - Elsevier BV | Journal of Molecular Structure
Ahmed El-Shenawy, A. Wellenreuther, Essam Badreddin,
This work is a practical evaluation between two different holonomic wheeled mobile robot platforms. The evaluation criteria had been theoretically explained and used on the simulation level in previous publication. The main objective of this paper is evaluating each wheeled mobile robot practically using the proposed criteria. The first robot is the C3P, which has three caster wheels with wheel angular velocities actuation. The second robot is omni-directional wheeled platform with three omni-directional ...
Tópico(s): Robotic Path Planning Algorithms
2008 - Institute of Electrical and Electronics Engineers | Conference proceedings/Conference proceedings - IEEE International Conference on Systems, Man, and Cybernetics
Ahmed El-Shenawy, Aly H. Atta, Moamen S. Refat,
The goal of this paper is recognized to the chemical and microbial impact resulting from the interaction between nalidixic acid (NDX) and two lanthanide salts (GdCl3.6H2O and TbCl3.6H2O), which were prepared in normal and nano-scale range. Gadolinium and terbium(III) metal ions chelated with NDX through the deprotonation of carboxylic group of NDX bidentate ligand and oxygen atom of carbonyl group. The analytical analyses (elemental analyses, electrical conductivity) and spectroscopic measurements ( ...
Tópico(s): Metal complexes synthesis and properties
2014 - Elsevier BV | International Journal of Electrochemical Science
Eman A. El‐maadawy, Roba M. Talaat, Maha M Ahmed, Soha Z. El-Shenawy,
To investigate the association between IL-6 polymorphisms (-174G/C, -572G/C and -597G/A) and susceptibility to chronic hepatitis B virus (CHB) infection.Total 108 subjects with CHB infection and 102 healthy controls were enrolled in this study. IL-6 (-174G/C) was genotyped using Mutagenically separated Polymerase Chain Reaction (MS-PCR) while sequence specific primers-PCR (SSP-PCR) was used for studying -572G/C and -597G/A. IL-6 plasma level was measured using Enzyme-linked immunosorbent assay (ELISA).A significant ...
Tópico(s): Liver Disease Diagnosis and Treatment
2018 - Elsevier BV | Human Immunology
Mervat Morsy Abbas Ahmed El-Gendy, Mohamed F. Awad, Fareed Shawky El-Shenawy, Ahmed Mohamed Ahmed El-Bondkly,
L-Asparaginase is an antileukemic agent that depletes L-asparagine "an important nutrient for cancer cells" through the hydrolysis of L-asparagine into L-aspartic acid and ammonia leading to leukemia cell starvation and apoptosis in susceptible leukemic cell populations. Moreover currently, bacterial L-asparaginase has been limited by problems of lower productivity, stability, selectivity and a number of toxicities along with the resistance towards bacterial L-asparaginase. Then the current work ...
Tópico(s): Folate and B Vitamins Research
2021 - Elsevier BV | Saudi Journal of Biological Sciences
H. E. Ramadan, Mahmoud M. A. Elsayed, Amani Elsayed, Marwa Fouad, Mohamed S. Mohamed, Sangmin Lee, Reda A. Mahmoud, Shereen A. Sabry, Mohammed M. Ghoneim, Ahmed H.E. Hassan, Reham A. Abd Elkarim, Amany Belal, Ahmed A. El-Shenawy,
Diabetes mellitus (DM) is the most prevalent cause of diabetic retinopathy (DRP). DRP has been recognized for a long time as a microvascular disease. Many drugs were used to treat DRP, including vildagliptin (VLD). In addition to its hypoglycemic effect, VLD minimizes ocular inflammation and improves retinal blood flow for individuals with type 2 diabetes mellitus. Nevertheless, VLD can cause upper respiratory tract infections, diarrhea, nausea, hypoglycemia, and poor tolerability when taken orally ...
Tópico(s): Lipid Membrane Structure and Behavior
2024 - Elsevier BV | International Journal of Pharmaceutics X
Ahmed E. Yousef, Moustafa El-Shenawy, Elmer H. Marth,
ABSTRACT The population of Listeria monocytogenes in a minimal medium (lacking a nitrogen source) at pH 5.5 decreased logarithmically during incubation. Rate of death of the pathogen, indicated by D‐values, was greatly affected by changes in the temperature of incubation (4–35°C), but to a much lesser extent by the presence of benzoic acid (3000 ppm). Injury of L. monocytogenes during incubation was equally detectable on tryptose agar containing 6% salt and McBride Listeria Agar containing 0.5% lithium ...
Tópico(s): Microbial Inactivation Methods
1989 - Wiley | Journal of Food Science
Ahmed El-Shenawy, Achim Wagner, Essameddin Badreddin,
A holonomic mobile robot with three castor wheels is presented. For each wheel, only the angular velocity is actuated. Due to the actuation characteristics, the actuated inverse solution yields singularities for some common wheel configurations. In this paper two approaches are proposed for solving this singularity problem: 1. The coupling approach is a virtual actuation for the steering angle velocity through controlling the actuated angular velocities of the other wheels. 2. The escaping singularity ...
Tópico(s): Robotic Mechanisms and Dynamics
2006 - Elsevier BV | IFAC Proceedings Volumes
Tópico(s): Synthesis and Characterization of Heterocyclic Compounds
2016 - Pleiades Publishing | Russian Journal of Bioorganic Chemistry
Mohamed Abd El-Latif Z, Ahmed El-Shenawy,
Triazines and its derivatives have attracted considerable attention as cancer chemopreventive agents and also as cancer therapeutics.Many of its derivatives inhibit the growth of human cancer cell lines by triggering apoptosis.With this background, we planned to synthesis a series of triazine derivatives to assess their anti proliferation efficacy on human cancer cell lines.So, 2-(amino) thioxo-3-phenyl-1,2,5,6-tetrahydro-1,2,4-triazine-6-one was prepared via the reaction of (1) N-benzoyl glycine ...
Tópico(s): Synthesis and biological activity
2016 - Asian Network for Scientific Information | International Journal of Pharmacology
Manal Diab, AhmedEl Shenawy, Mohamed Shemis, M. El Ghannam, Manal El Said, Moustafa Abdelnasser, MahmoudAbdel Hady, E. El Sherbini, Mohamed Saber,
... DIAGNOSTIC, DEMOGRAPHIC, ENDOSCOPIC AND CLINICAL CHARACTERISTICS. Manal Diab , Ahmed El-Shenawy , Mohamed Shemis , Maged El-Ghannam , Manal El Said , ...
Tópico(s): Gastroesophageal reflux and treatments
2018 - | International Journal of Advanced Research
Moustafa El-Shenawy, Ahmed E. Yousef, Elmer H. Marth,
La radiosensibilite de 3 souches est etudiee dans un bouillon et du bœuf. Trace des courbes d'inactivation en fonction de la dose. La sensibilite des souches est variable
Tópico(s): Microbial Inactivation Methods
1989 - Elsevier BV | LWT