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Search Results: 1 - 10 of 462839 matches for " Mansour A. Khalifa "
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Comparison between Preoperative and Postoperative Sublingual Misoprostol for Prevention of Postpartum Hemorrhage during Cesarean Section: A Randomized Clinical Trial  [PDF]
Alaa Eldin A. Youssef, Mansour A. Khalifa, Mohamed Bahaa, Ahmed M. Abbas
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.94052
Abstract: Background: Blood loss is one of the important complications during cesarean section (CS). Previous reports have shown that misoprostol is effective in reducing blood loss during and after CS. However, the optimum time for its administration to decrease the amount of PPH is still under discussion. Objective: To compare the effect of preoperative and postoperative administration of sublingual misoprostol (400 μg) in reducing the amount of blood loss during and 24 hours after CS. Setting: Obstetrics and Gynecology Department, Faculty of Medicine, Assiut University, Assiut, Egypt, between January 2017 and July 2018. Study Design: A prospective, randomized clinical trial. Methods: Four-hundred thirty women fulfilling the inclusions criteria: elective lower segment CS at term (≥37 weeks) with normal fetal heart tracing who accepted to participate in the study. Patients were divided into two groups; Patients assigned to group 1 received 400 μg sublingual misoprostol immediately after urinary catheterization and before skin incision, while patients assigned to group 2 received sublingual misoprostol immediately after skin closure. The primary outcome was the estimation of intraoperative and postoperative blood loss for 24 hours. Results: There was a significant reduction in the intraoperative blood loss in group 1 compared with group 2 (403.51 ± 72.99 vs. 460.99 ± 74.66 ml, respectively). Also, there was a significant reduction in postoperative blood loss in group 1 compared with group 2 with a statistical significance (169.45 ± 12.03 vs. 195.77 ± 13.34 ml, respectively). Postoperative hemoglobin and
Liver fibrosis recognition using multi-compression elastography technique  [PDF]
Ashraf Ali Wahba, Nagat Mansour Mohammed Khalifa, Ahmed Farag Seddik, Mohammed Ibrahim El-Adawy
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.611129
Abstract: Liver fibrosis recognition is an important issue in diagnostic imaging. The accurate estimation of liver fibrosis stages is important to establish prognosis and to guide appropriate treatment decisions. Liver biopsy has been for many years the reference procedure to assess histological definition for liver diseases. But biopsy measurement is an invasive method besides it takes large time. So, fast and improved methods are needed. Using elastography technology, a correlation technique can be used to calculate the displacement of liver tissue after it has suffered a compression force. This displacement is related to tissue stiffness, and liver fibrosis can be classified into stages according to that displacement. The value of compression force affects the displacement of tissue and so affects the results of the liver fibrosis diagnosing. By using finite element method, liver fibrosis can be recognized directly within a short time. The proposed work succeeded in recognizing liver fibrosis by a percent reached in average to 86.67% on a simulation environment.
A Finite Element Model for Recognizing Breast Cancer  [PDF]
Ashraf Ali Wahba, Nagat Mansour Mohammed Khalifa, Ahmed Farag Seddik, Mohammed Ibrahim El-Adawy
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.75032
Abstract: Breast cancer recognition is an important issue in elastography diagnostic imaging. Breast tumor biopsy has been for many years the reference procedure to assess histological definition for breast diseases. But biopsy measurement is an invasive method besides it takes larger time. So, fast and improved methods are needed. Using elastography technology, a digital image correlation technique can be used to calculate the displacement of breast tissue after it has suffered a compression force. This displacement is related to tissue stiffness, and breast cancer can be classified into benign or malignant according to that displacement. The value of compression force affects the displacement of tissue, and then affects the results of the breast cancer recognition. Finite element method was being used to simulate a model for the breast cancer as a phantom to be used in measurements and study of breast cancer diagnosis. The breast cancer using this phantom can be recognized within a short time. The proposed work succeeded in recognizing breast tumor phantom by an average correct recognition ratio CRR of about 94.25% on a simulation environment. The strain ratio SR for benign and malignant models is also computed. The result of the simulated breast tumor model is compared with real data of 10 lesion cases (6 benign and 4 malignant). The coefficient of variation CV between the simulated SR and the SR using real data reaches to about 5% for benign lesions and 4.78% for malignant lesions. The results of CRR and CV in this proposed work assure that the proposed breast cancer model using finite element modeling is a robust technique for breast tumor simulation where the behavior of real data of breast cancer can be predicted.
Self-Absorption Effects on Electron Temperature-Measurements Utilizing Laser Induced Breakdown Spectroscopy (LIBS)-Techniques  [PDF]
Shawqi A. M. Mansour
Optics and Photonics Journal (OPJ) , 2015, DOI: 10.4236/opj.2015.53007
Abstract: In the present work, we have studied the temporal evolution of aluminum alloy plasma produced by the fundamental (1064 nm) of a Q-switched Nd:YAG laser by placing the target material in air at atmospheric pressure. The four Al I-neutral lines at 308.21, 309.27, 394.40 and 369.15 nm as well as Al II-ionic lines at 281.61, 385.64 and 466.30 nm are used for the determination of the electron temperature Te using Saha-Boltzmann plot method. The neutral aluminum lines were found to suffer from optical thickness which manifested itself on the form of scattered points around the Saha-Boltzmann line. The isolated optically thin hydrogen Hα-line at 656.27 nm appeared in the spectra under the same experimental conditions was used to correct the Al I-lines which contained some optical thickness. The measurements were repeated at different delay times ranging from 1 to 5 μs. The comparison between the deduced electron temperatures from aluminum neutral lines before correction against the effect self-absorption to that after correction revealed a precise value in temperature. The results sure that, in case of the presence of self-absorption effect the temperature varies from (1.4067 - 1.2548 eV) as the delay time is varied from 0 to 5 μs. Whereas, in the case of repairing against the effect, it varies from (1.2826 - 0.8961 eV) for the same delay time variation.
Treatment of Kaposi’s Sarcoma by Combination of Zinc Sulfate and Propranolol  [PDF]
Khalifa E. Sharquie, Adil A. Noaimi
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2018, DOI: 10.4236/jcdsa.2018.84026
Abstract: Kaposis sarcoma (KS) in Iraq has been reported as sporadic cases of elderly of Iraqi population but after exposure to depleted uranium radiation in early 1991, the frequency of the disease is increasing appearing in younger age with more wide spread and aggressive in nature. There is no satisfactory oral treatment to control this disease. The aim of the present work is to record a new regime of therapy using oral zinc sulfate and oral propanolol. Four patients with wide spread Kaposi’s sarcoma (KS) were treated with oral and topical zinc sulfate solution and oral propranolol. The duration of treatment was between 6 - 12 months and the response started few weeks and was obvious after one month. Most old lesions were resolved leaving post inflammatory hyperpigmentation and few lesions appeared during course of treatment.
Efficiency of Triple-SCoT Primer in Characterization of Genetic Diversity and Genotype-Specific Markers against SSR Fingerprint in Some Egyptian Barley Genotypes  [PDF]
Aziza A. Aboulila, Mohamed Mansour
American Journal of Molecular Biology (AJMB) , 2017, DOI: 10.4236/ajmb.2017.73010
Abstract: Ten Egyptian barley genotypes (2 commercial varieties and 8 breeding lines) were cultivated under normal condition at the Experimental Farm of Sakha Agricultural Research station and exposed to salinity stress condition at the Experimental Farm of El-hosainia plain Agricultural Research station, Elsharkia Governorate, Egypt, in an attempt to identify the relative salinity tolerant genotypes. A susceptibility index (SI) was used to estimate the relative stress loss because it accounted for variation in yield potential and stress intensity. Giza 123, Line-1, Line-5, Line-6 and Line-8 genotypes were considered as saline tolerant genotypes on the basis of their highly tolerance indices values. Barley genotypes were characterized by seven SSR markers and three SCoT primers in different combinations to discern the extent of genetic variation and develop a fingerprinting key. Normal SCoT reactions amplify single segments of DNA which are 15- to 19-mer long. A new strategy was used to increase SCoT potential in genetic diversity studies by using two and three different primer combinations per reaction. Amplification products scored a polymorphism percentage of 94.44% for Triple-SCoT and 90.91% for SSR, while the average no. of polymorphic fragments/primer was 17 and 7.14 in the two marker systems, respectively. On the other side, Triple-SCoT exhibited the highest average number of positive and negative genotype-specific markers. The cluster analysis of the studied genotypes using these different marker systems revealed four dendrograms varied in their topology. The dendrogram based on Triple-SCoT data exhibited the closest relationships to those illustrated by SSR dendrogram.
Reactivity patterns of cobalt macrocyclic complexes. Metal promoted reactions of dioxygen
Mohamed A. Khalifa
Bulletin of the Chemical Society of Ethiopia , 1993,
Abstract: BuII. Chem. Soc. Ethiop. 1993, 7(2) 79-85.
Kinetics of oxidation of β-diimihe macrocyclic complexes and accessibility of six-coordinate copper(III) complexes generated by electrochemical oxidation of copper(II) complexes
Mohamed A. Khalifa
Bulletin of the Chemical Society of Ethiopia , 1990,
Abstract: Bull. Chem. Soc. Ethiop., 4(l), 19-26 (1990).
A study of some transition metal complexes with hexadentate nnnnoo-chromophoric type ligands
Mohamed A. Khalifa
Bulletin of the Chemical Society of Ethiopia , 1989,
Abstract: Bull. Chem. Soc. Ethiop., 3(1) 9-15 (1989).
Kinetics of oxidation of β-diimihe macrocyclic complexes and accessibility of six-coordinate copper(III) complexes generated by electrochemical oxidation of copper(II) complexes
Mohamed A. Khalifa
Bulletin of the Chemical Society of Ethiopia , 1990,
Abstract: Bull. Chem. Soc. Ethiop., 4(l), 19-26 (1990).
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