oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 17 )

2019 ( 913 )

2018 ( 1079 )

2017 ( 1026 )

Custom range...

Search Results: 1 - 10 of 515776 matches for " Mostafa E. M. Ahmed "
All listed articles are free for downloading (OA Articles)
Page 1 /515776
Display every page Item
Analgesic Effect of Pre-Incisional Peritonsillar Infiltration of Ketamine for Post-Tonsillectomy Pain in Children  [PDF]
Nabil A. Sarhan, Mohammed A. Fatahalla, Mostafa E. M. Ahmed, Haitham A. M. Osman
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2018, DOI: 10.4236/ijohns.2018.76032
Abstract: Objective: Two different concentrations of ketamine 0.5 mg/kg, 0.25 mg/kg were applied to both tonsils perioperatively to check analgesic effect postoperatively in children. This study done at Department of anesthesia and otorhinolaryngology, faculty of medicine, Al-Azhar University hospitals, and the medical ethics committee. The study was conducted in the ENT operating theatre, Al-Azhar University Hospitals, from Jan. 2017 to June 2018. Methodology: We divided patients into 3 groups K1, K2 and S each group 25 patients, group K1 had 0.25 mg ketamine, group k2 had 0.5 mg ketamine and group S had normal saline as a control group. These groups assessed intraoperatively by Heart rate and main arterial pressure (MAP) were recorded at the intervals together with Ventilation parameters. Postoperative pain assessment by using Children’s Hospital of Eastern Ontario Pain Scale (CHEOPS). The sedative condition was assessed with the Wilson sedation scale at 5, 15, 30, and 60 min after entrance to the PACU. CHEOPES was recorded only when patient modified Wilson sedation score was one. Incidences of postoperative complications as: blood loss, dysphagia, nausea and vomiting were noted and demonstrated; hallucinations will be observed and recorded. Results: There were no significant differences among the groups regarding age, gender and weight. There were no significant differences among the groups with respect to the demographic data, duration of surgery or anesthesia, and intraoperative blood loss. As regarding hemodynamics, mean blood pressure was significantly lower in group (K1) than group S (control group) at 20 and 30 minutes after injection of ketamine and significantly lower in group (K2) than group S (control group) at 20 and 30 minutes after injection of ketamine with no difference between group (K1) and (K2). There was a significant statistical difference in analgesia duration per hours and frequency of analgesics used over 24 hours between three groups, the duration was longer in group (K1) and (K2) and frequency of analgesics used over 24 hours (P value < 0.05). Regarding postoperative complications, there was no significant statistical differences as regard nausea and vomiting, but the percentage of dysphagia is significantly higher in group S (control group) than group (K1) and group (K2). Conclusions: In our study, we found that preincisional peritonsillar infiltration of 0.25 mg/kg or 0.5 mg/kg of ketamine given at approximately three minutes before surgery provides efficient pain
A Framework for a Smart Social Blood Donation System Based on Mobile Cloud Computing
Almetwally M. Mostafa,Ahmed E. Youssef,Gamal Alshorbagy
Computer Science , 2014,
Abstract: Blood Donation and Blood Transfusion Services (BTS) are crucial for saving people lives. Recently, worldwide efforts have been undertaken to utilize social media and smartphone applications to make the blood donation process more convenient, offer additional services, and create communities around blood donation centers. Blood banks suffer frequent shortage of blood; hence, advertisements are frequently seen on social networks urging healthy individuals to donate blood for patients who urgently require blood transfusion. The blood donation process usually consumes a lot of time and effort from both donors and medical staff since there is no concrete information system that allows donors and blood donation centers communicate efficiently and coordinate with each other to minimize time and effort required for blood donation process. Moreover, most blood banks work in isolation and are not integrated with other blood donation centers and health organizations which affect the blood donation and blood transfusion services quality. This work aims at developing a Blood Donation System (BDS) based on the cutting-edge information technologies of cloud computing and mobile computing.
Prophylactic Role of Echinacea, Green Tea and Boswellia Extracts in Pyloric Ligation-Induced Gastric Ulcer in Rats
Souty M. Sharkawi,Gamal Ahmed El-Sherbiny,Afaf A. Ain-Shoka,Mostafa E. El-Sayed
British Journal of Pharmacology and Toxicology , 2012,
Abstract: Peptic ulcer is a common disorder of the stomach and duodenum. Herbs and medicinal plants are considered to be a potential source to combat various diseases including gastric ulcer. The present study was conducted to evaluate the gastro protective effects of Echinacea extract, Green tea extract and Boswellia extract on a pyloric ligation-induced gastric ulcer. Six groups of rats were intraperitoneally pre-treated with saline as normal group, saline as ulcer group, 20 mg/kg of ranitidine as positive group, Echinacea extract (25 mg/kg, I.P), Green tea extract (25 mg/kg, I.P) and Boswellia extract (200 mg/kg, I.P) for 15 consecutive days before pyloric ligation. Gastric acidity, ulcer index and histology were assessed. Gastric homogenates were determined for Malondialdehyde (MDA) content, Glutathione (GSH) content in addition to blood Superoxide Dismutase (SOD) activity. Pyloric ligation elevated gastric acidity, ulcer index and malondialdehyde content, while glutathione content and superoxide dismutase activity were significantly decreased. Prior administration of extracts mitigated the injurious effects of pyloric ligation. Echinacea, Green tea and Boswellia extracts separately ameliorated all the altered biochemical parameters. These results were confirmed histologically. These data suggested that Green tea, Echinacea or Boswellia extract could have a protective role in gastric ulcer probably via regulation of oxidant/antioxidant balance.
Evaluation of Hoffer Q formula in Short and long axial lengths
Ahmed I Galhoom, Mostafa M Mostafa
Egyptian Journal of Hospital Medicine , 2010,
Abstract: Purpose: Evaluation of The accuracy of Hoffer Q formula for intraocular lens (IOL) power calculation in short and long axial lengths of the eye. Methods: 100 eyes divided equally into 2 groups: group I (50 eyes) with axial length more than 24.5 and group II( 50 eyes) with axial length more less than 22. Comparison between both groups was done as regards post operative residual refractive error after IOL implantation using Hoffer Q formula. Results: Insignificant difference between the 2 groups as regard post operative residual refractive error. In short length eyes, the mean postoperative refractive error with Hoffer Q formula was 0.80 +0.33D. In long eyes, the mean postoperative refractive error was 1.23 +0.70D. The results show that the best performing formula was in short eyes (P = 0.012). Conclusion: Insignificant difference as regards postoperative residual refractive error between both groups but Hoffer Q formula best performed in short eyes.
Use of an Energy-Like Integral to Study the Motion of an Axi-Symmetric Satellite under Drag and Radiation Pressure  [PDF]
Ahmed Mostafa
International Journal of Astronomy and Astrophysics (IJAA) , 2015, DOI: 10.4236/ijaa.2015.53019
Abstract: The axi-symmetric satellite problem including radiation pressure and drag is treated. The equations of motion of the satellite are derived. An energy-like is given for a general drag force function of the polar angle θ, and then it is used to find a relation for the orbit equation of the satellite with initial conditions satisfying the vanishing of arbitrarily choosing higher derivatives of the velocity.
SCOUR AROUND SINGLE PILE AND PILE GROUPS SUBJECTED TO WAVES AND CURRENTS
YASSER E. MOSTAFA,AHMED F. AGAMY
International Journal of Engineering Science and Technology , 2011,
Abstract: This paper presents the results of an experimental study of scour around single pile and different configurations of pile groups exposed to waves and currents. Four different sets of experiments were used in this study: single pile, group of two piles with side-by-side arrangement, group of two piles with tandem arrangement and group of three piles. For the four sets of tests, the main variables were water depth, wave characteristics, flow velocity,Keulegan-Carpenter number and gap between piles. It was found that the larger the KC, the larger the scour hole dimensions. Existence of waves reduces the scour compared to the case of currents only. Equations for calculating scour at different configurations of pile groups are introduced. The scour depth for case of pile groups is generally greater than that for case of single pile depending on the group configuration and gap between piles.
Bipartite Laparoscopic Cholecystectomy: New Technique for Avoiding Bile Duct Injury in Difficult Cases  [PDF]
Ahmed E. Lasheen, Khaled Safwat, Wesam Amr, Osama Gharib, Mostafa Baiomy, Mohamed Riad, Basem Sieda
Surgical Science (SS) , 2014, DOI: 10.4236/ss.2014.56044
Abstract:

The incidence of bile duct injury in laparoscopic cholecystectomy (LC) is still two times greater compared to classic open surgery. This study offers new procedure to avoid this complication during LC. The gall bladder was divided into two parts above the Hartmann pouch and all contents were aspirated. Then, the distal part was dissected for short distance. The proximal part was dissected dome down until reaching to cystic duct which was tied or clipped and cut. J-vac drain was put in peritoneal cavity. Between September 2012 and October 2013, overall 77 patients (53 females and 24 males) with mean age of 49 years (between 23 and 67 years) underwent bipartite laparoscopic cholecystectomy. The mean operative time was 60 minutes (between 40 and 90 minutes). The dissection of both parts of gall bladder was safe and easy as close as possible from its wall. No biliary tract injuries were recorded during or after procedure and also at follow-up period (20 months). Bipartite laparoscopic cholecystectomy is safe, easy to do, and can avoid all complications especially bile duct injuries in difficult cases.

Synthesis and characterization of a novel schiff base metal complexes and their application in determination of iron in different types of natural water  [PDF]
Mostafa M. H. Khalil, Eman H. Ismail, Gehad G. Mohamed, Ehab M. Zayed, Ahmed Badr
Open Journal of Inorganic Chemistry (OJIC) , 2012, DOI: 10.4236/ojic.2012.22003
Abstract: A novel, simple approach to the synthesis of macrocyclic Schiff base ligand resulted from the condensation of bisaldehyde and ethylenediamine was prepared (7, 8, 15, 16, 17, 18-hexahydrodibenzo (a, g) (14) annulene) (L) and its complexes were synthesized and characterized using different physicochemical studies as elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic data of the complexes suggest their 1:1 complexe structures which are investigated by elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic studies suggested the octahedral structure for the all complexes. The spectroscopic data of the complexes suggest their structure in which (N2O2) group act as a tetradentate ligand and two chlorides as monodentate ligands. Also electronic spectra and magnetic susceptibility measurements indicate octahedral structure of these complexes. The synthesized Schiff base and its metal complexes also were screened for their antibacterial and antifungal activity. Here we report the effect of a neutral chelating ligand on the complexation with iron to determine it in different types of natural water using recovery test. The activity data show that the metal complexes to be more potent/ antibacterial than the parent Schiff base ligand against one or more bacterial species.
Influence of Silver Vapours on the Transport of Nitrogen Plasma Properties  [PDF]
Ahmed M. A. Amry, Mostafa M. Abd El-Raheem, Gamal A. Yahya
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.65060
Abstract: Theoretical investigation of nitrogen-silver arc transport properties and an arc plasma model in stationary state have studied at low temperature i.e. between 3500 K and 13,000 K at atmospheric pressure. Results showed that the presence of small amounts of metal vapours, which have low ionization potential such as silver, modify the plasma characteristics. The solution of Elenbaas-Heller gives us some information about the effect of metal vapours emitted from electrode on the characteristics of the arc column. We concluded that a small fraction of metal vapours in the arc column modify the electric field, current and the axial temperature.
3D Object Recognition by Classification Using Neural Networks  [PDF]
Mostafa Elhachloufi, Ahmed El Oirrak, Aboutajdine Driss, M. Najib Kaddioui Mohamed
Journal of Software Engineering and Applications (JSEA) , 2011, DOI: 10.4236/jsea.2011.45033
Abstract: In this Paper, a classification method based on neural networks is presented for recognition of 3D objects. Indeed, the objective of this paper is to classify an object query against objects in a database, which leads to recognition of the former. 3D objects of this database are transformations of other objects by one element of the overall transformation. The set of transformations considered in this work is the general affine group.
Page 1 /515776
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.