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Journal of Pharmaceutical Analysis 2013年第5期3卷 367-375页

作者： Gehad G.mohamed F.A.Nour El-Dien Eman Y.Z.Frag marwa El-Badry mohamed Chemistry Department Faculty of Science Cairo University

The construction and performance characteristics of new sensitive and selective in situ modified screen printed （ISPE） and carbon paste （ICPE） electrodes for determination of naphazoline hydrochloride （NPZ-HC1） have been developed. The electrodes under investigation show potentiometric response for NPZ-HC1 in the concentration range from 7.0 x 10-7 to 1.0 x 10-2 M at 25 ~C and the electrode response is independent of pH in the range of 3.1-7.9. These sensors have slope values of 59.7＋0.6 and 59.2＋0.2 mV decade-l with detection limit values of 5.6 ~ 10-7 and 5.9 x 10-7 M NPZ- HC1 using ISPE and ICPE, respectively. These electrodes show fast response time of 4-7 s and 5-8 s and exhibits lifetimes of 28 and 30 days for ISPE and ICPE, respectively. Selectivity for NPZ-HC1 with respect to a number of interfering materials was also investigated. It was found that there is no interference from the investigated inorganic cations, anions, sugars and other pharmaceutical excipients. The proposed sensors were applied for the determination of NPZ-HC1 in pharmaceutical formulation using the direct potentiometric method. It showed a mean average recovery of 100.2% and 102.6% for ISPE and ICPE, respectively. The obtained results using the proposed sensors were in good agreement with those obtained using the official method. The proposed sensors show significantly high selectivity, response time, accuracy, precision, limit of detection （LOD）and limit of quantification （LOQ） compared with other proposed methods.

关键词： ISPE and ICPE Potentiometry Naphazoline hydrochloride Eye drops

A comparative dosimetric study of neoadjuvant 3D conformal radiotherapy for operable rectal cancer patients versus conventional 2D radiotherapy in NCI-Cairo

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The Chinese-German Journal of Clinical Oncology 2012年第4期11卷 224-228页

作者： mohamed Mahmoud Hesham A.EL-Hossiny Nashaat A.Diab marwa A.EL Razek Department of Radiation Oncology National Cancer InstituteCairo University Departement of Radiation Physics National Cancer InstituteCairo University

Objective:This study was to compare this multiple-field conformal technique to the AP-PA technique with respect to target volume coverage and dose to normal ***:We conducted a single institutional prospective comparative dosimetric analysis of 22 patients who received neoadjuvant radiation therapy for rectal cancer presented to radiotherapy department in National Cancer Institute,Cairo in period between June 2010 to September 2011 using 3D conformal radiotherapy technique for each patient,a second radiotherapy treatment plan was done using an anteroposterior (AP-PA) fields,the two techniques were then compared using dose volume histogram (DVH) ***:Comparing different DVHs,it was found that the planning target volume (PTV) was adequately covered in both (3D & 2D) plans while it was demonstrates that this multiple field conformal technique produces superior distribution compared to 2D technique,with considerable sparing of bladder,ovaries and head of both ***:From the present study,it shows that it is recommended to use 3D planning for preoperative cases of cancer rectum so far it produces good coverage of the target as well as good sparing of the surrounding critical organs.

关键词： dosimetric study cancer rectum

Gaussian Optimized Deep Learning-based Belief Classification Model for Breast Cancer Detection

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Computers, Materials & Continua 2022年第11期73卷 4123-4138页

作者： Areej A.Malibari marwa Obayya mohamed K.Nour Amal S.Mehanna Manar Ahmed Hamza Abu Sarwar Zamani Ishfaq Yaseen Abdelwahed Motwakel Department of Industrial and Systems Engineering College of EngineeringPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Biomedical Engineering College of EngineeringPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Sciences College of Computing and Information SystemUmm Al-Qura UniversitySaudi Arabia Department of Digital Media Faculty of Computers and Information TechnologyFuture University in EgyptNew Cairo11845Egypt Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam Bin Abdulaziz UniversityAlKharjSaudi Arabia

With the rapid increase of new cases with an increased mortality rate,cancer is considered the second and most deadly disease *** cancer is the most widely affected cancer worldwide,with an increased death rate *** to radiologists’processing of mammogram images,many computer-aided diagnoses have been developed to detect breast *** detection of breast cancer will reduce the death rate *** early diagnosis of breast cancer using the developed computer-aided diagnosis(CAD)systems still needed to be enhanced by incorporating innovative deep learning technologies to improve the accuracy and sensitivity of the detection system with a reduced false positive *** paper proposed an efficient and optimized deep learning-based feature selection approach with this *** model selects the relevant features from the mammogram images that can improve the accuracy of malignant detection and reduce the false alarm *** learning is used in the extraction of features *** ext,a convolution neural network,is used to extract the *** two feature vectors are fused and optimized with enhanced Butterfly Optimization with Gaussian function(TL-CNN-EBOG)to select the final most relevant *** optimized features are applied to the classifier called Deep belief network(DBN)to classify the benign and malignant *** feature extraction and classification process used two datasets,breast,and *** to the existing methods,the optimized deep learning-based model secured 98.6%of improved accuracy on the breast dataset and 98.85%of improved accuracy on the MIAS dataset.

关键词： Breast cancer detection computer-aided diagnosis(CAD) deep learning CNN entropy butterfly optimization

The Generalized Search for a Randomly Moving Target

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Applied Mathematics 2014年第4期5卷 642-652页

作者： Abdelmoneim anwar mohamed Teamah Mathematics Department Faculty of Science Tanta University Tanta Egypt

A target is assumed to move randomly on one of two disjoint lines L1 and L2 according to a stochastic process . We have two searchers start looking for the lost target from some points on the two lines separately. Each of the searchers moves continuously along his line in both directions of his starting point. When the target is valuable as a person lost on one of disjoint roads, or is serious as a car filled with explosives which moves randomly in one of disjoint roads, in these cases the search effort must be unrestricted and then we can use more than one searcher. In this paper we show the existence of a search plan such that the expected value of the first meeting time between the target and one of the two searchers is minimum.

关键词： Stochastic Process Expected Value Linear Search Optimal Search Plan

Psychiatric Aspects of Egyptian Women with Unexplained Infertility

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Open Journal of Obstetrics and Gynecology 2020年第9期10卷 1331-1339页

作者： Mohammed Hussain Mostafa anwar mohamed Elashram Department of Obstetrics and Gynecology Faculty of Medicine Ain Shams University Cairo Egypt General Secretary of Mental Health Cairo Egypt

Background: The diagnosis of unexplained infertility may be very frustrating for infertile couples and they show higher depression levels when compared to fertile couples. Aim: To assess the psychiatric aspects of Egyptian women with unexplained infertility. Methods: 220 infertile women were included in this study (110 with unexplained infertility and 110 with explained infertility). The psychiatric aspect of these women was evaluated using the translated and validated Hamilton Anxiety Rating Scale and the Beck Depression Inventory-II. Findings: The number of women with mild depression was significantly higher in the unexplained infertility group (47/110 (42.7%)) versus (22/110 (20%)) in the explained infertility group (P = 0.007). The number of women with moderate anxiety was significantly higher in the unexplained infertility group (26/110 (23.6%)) versus (8/110 (7.3%)) in the explained infertility group (

关键词： Psychiatric Aspects Egyptian Women Infertility Depression Anxiety

Improved Bat Algorithm with Deep Learning-Based Biomedical ECG Signal Classification Model

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Computers, Materials & Continua 2023年第2期74卷 3151-3166页

作者： marwa Obayya Nadhem NEMRI Lubna A.Alharbi mohamed K.Nour Mrim M.Alnfiai Mohammed Abdullah Al-Hagery Nermin M.Salem Mesfer Al Duhayyim Department of Biomedical Engineering College of EngineeringPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Systems College of Science and Art at MahayilKing Khalid UniversitySaudi Arabia Department of Computer Science College of Computers and Information TechnologyTabuk UniversitySaudi Arabia Department of Computer Sciences College of Computing and Information SystemUmm Al-Qura UniversitySaudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Computer Science College of ComputerQassim UniversitySaudi Arabia Department of Electrical Engineering Faculty of Engineering and TechnologyFuture University in EgyptNew Cairo11835Egypt Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam Bin Abdulaziz UniversitySaudi Arabia

With new developments experienced in Internet of Things(IoT),wearable,and sensing technology,the value of healthcare services has *** evolution has brought significant changes from conventional medicine-based healthcare to real-time observation-based *** Electrocardiogram(ECG)signals are generally utilized in examination and diagnosis of Cardiovascular Diseases(CVDs)since it is quick and non-invasive in *** to increasing number of patients in recent years,the classifier efficiency gets reduced due to high variances observed in ECG signal patterns obtained from *** such scenario computer-assisted automated diagnostic tools are important for classification of ECG *** current study devises an Improved Bat Algorithm with Deep Learning Based Biomedical ECGSignal Classification(IBADL-BECGC)*** accomplish this,the proposed IBADL-BECGC model initially pre-processes the input ***,IBADL-BECGC model applies NasNet model to derive the features from test ECG *** addition,Improved Bat Algorithm(IBA)is employed to optimally fine-tune the hyperparameters related to NasNet ***,Extreme Learning Machine(ELM)classification algorithm is executed to perform ECG classification *** presented IBADL-BECGC model was experimentally validated utilizing benchmark *** comparison study outcomes established the improved performance of IBADL-BECGC model over other existing methodologies since the former achieved a maximum accuracy of 97.49%.

关键词： Data science ECG signals improved bat algorithm deep learning biomedical data data classification machine learning

Incidental radiological findings suggestive of COVID-19 in asymptomatic patients

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World Journal of Radiology 2022年第1期14卷 1-12页

作者： marwa Romeih Mary R Mahrous mohamed El Kassas Department of Radiodiagnosis Faculty of MedicineHelwan UniversityCairo 11795Egypt Department of Radiodiagnosis National Heart instituteCairo 11795Egypt

Despite routine screening of patients for coronavirus disease 2019(COVID-19)symptoms and signs at hospital entrances,patients may slip between the cracks and be incidentally discovered to have lung findings that could indicate COVID-19 infection on imaging obtained for other *** case reports and case series have been published to identify the pattern of this highly infectious *** article addresses the radiographic findings in different imaging modalities that may be incidentally seen in asymptomatic patients who carry *** general,findings of COVID-19 infection may appear in computed tomography(CT),magnetic resonance imaging,positron emission tomography-CT,ultrasound,or plain X-rays that show lung or only apical or basal *** identification of these characteristics by radiologists and clinicians is crucial because this would help in the early recognition of cases so that a rapid treatment protocol can be established,the immediate isolation to reduce community transmission,and the organization of close ***,it is important to both the patient and the physician that these findings are highlighted and reported.

关键词： Incidental Asymptomatic COVID-19 Chest computed tomography Positron emission tomography-computed tomography Magnetic resonance imaging Ultrasound Oncology patients

Assessment of engine's power budget for hydrogen powered hybrid buoyant aircraft

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Propulsion and Power Research 2016年第1期5卷 34-44页

作者： anwar U.Haque Waqar Asrar Ashraf A.Omar Erwin Sulaeman J.S.mohamed Ali Department of Mechanical Engineering International Islamic University Malaysia50728 Kuala LumpurMalaysia Department of Aeronautical Engineering University of TripoliP.O.Box 81507TripoliLibya

It is well known that hydrogen has less undesirable exhaust emissions as compared with other types of liquid *** can be used as an altemative fuel for a hybnid buoyant aircraft in which half of the gross takeoff weight is balanced by the aerostatic *** the present study,weight advantage of liquid hydrogen as an ideal fuel has been explored for its further utilization in such *** relationships for the estimation of zero lift drag of airship is discussed with special focus on the utilization of such analytical relationships for the aircraft whose fuselage resembles with the hull of an *** the analytical relationship of aircraft and airship design as a reference,existing relationships for estimation of power budget are systematically re-derived for defined constraints of rate of climb,maximum velocity and takeoff ground *** is perceived that when the propulsion sizing for liquid hydrogen is required,then the presented framework for estimation of its power budget will provide a stating point for the *** example for estimation of the power requirement is also presented as a test case.

关键词： Hybrid buoyant aircraft Ballonet's inflation Operator's constrains Engine selection Power budget

Colorectal cancer in Arab world:A systematic review

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World Journal of Gastrointestinal Oncology 2021年第11期13卷 1791-1798页

作者： Nahed A Makhlouf Muhammad Abdel-Gawad Aya M Mahros Sameh A Lashen Mariam Zaghloul Ahmed Eliwa Eman E Elshemy Zainab Ali-Eldin Doaa Abdeltawab Fathiya El-Raey Dalia Omran marwa Khalaf Nancy Fanous Ahmed Shawkat Abdelmohsen Ahmed Abu-Elfatth mohamed Abdelghani Mahmoud Farouk mohamed Abdelaziz mohamed Alboraie Department of Tropical Medicine and Gastroenterology Faculty of MedicineAssiut UniversityAssiut 71515Egypt Department of Hepatology Gastroenterologyand Infectious DiseasesAl-Azhar UniversityAssiut 71631Egypt Department of Hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversityKafrelsheikh 33656Egypt Department of Internal Medicine Alexandria UniversityAlexandria 21521Egypt Department of Internal Medicine Al-Azhar UniversityCairo 11884Egypt Department of Hepatogastroenterology and Infectious Diseases Al-Azhar UniversityCairo 11651Egypt Department of Internal Medicine Ain Shams UniversityCairo 11646Egypt Department of Hepatogastroenterology and Infectious diseases Faculty of MedicineAl-Azhar UniversityDamietta 34511CairoEgypt Department of Endemic Medicine Cairo UniversityCairo 12613Egypt Department of Tropical Medicine and Gastroenterology Assiut Liver CenterAssiut 71511Egypt Department of Gastroenterology Hepatology and EndoscopyPolice Authority HospitalCairo 12654Egypt Department of Clinical Oncology and Nuclear Medicine Al-Azhar UniversityCairo 11824Egypt

BACKGROUND The incidence of colorectal cancer(CRC)is increasing among young individuals in the Arab world as well as in other regions of the *** To explore the incidence and prevalence of CRC in the Arab *** The PubMed,Scopus,Web of Science,EBSCO and Wiley databases were searched to retrieve relevant articles irrespective of the language or the publication *** search terms were("colon OR rectum OR sigmoid OR rectal OR colonic OR colorectal")AND("cancer OR malignancy OR malignant OR neoplasm")AND("Jordan"OR"United Arab Emirates"OR"Bahrain"OR"Tunisia"OR"Algeria"OR"Djibouti"OR"Saudi Arabia"OR"Sudan"OR"Syria"OR"Somalia"OR"Iraq"OR"Oman"OR"Palestine"OR"Qatar"OR"Comoros"OR"Kuwait"OR"Lebanon"OR"Libya"OR"Egypt"OR"Morocco"OR"Mauritania"OR"Yemen").Reviews,metaanalyses,and articles containing nonoriginal data were *** articles were screened,and relevant data were *** statistics were used for data *** Nine studies were *** of the studies provided information regarding the prevalence of *** prevalence of CRC was 0.72% in Saudi Arabia and 0.78% in the United Arab Emirate,while in Egypt,it ranged from 0.4% to 14%.Four studies showed information regarding the *** annual incidence rate of CRC in Qatar was 7.5/100000/*** Egypt,the crude incidence rate(CIR)in males was 3.1 for colon cancer and 1 for rectal cancer,while in females,it was 2.3 for colon cancer and 0.8 for rectal *** age-standardized rate for CRC incidence in 2003 was 36.90 for males,26.50 for females,and 30.49 for both sexes in Saudi *** 2016,the CIRs in Saudi Arabia were 3.6 and 2.1 in females for colon cancer and rectal cancer,respectively,while in males,it was 3.3 and 2.8 for colon cancer and rectal cancer,*** study in Egypt revealed that 25% of CRC cases occurred among individuals younger than 40 years *** There is a considerable prevalence of CRC in some Arab *** studies are n

关键词： Colorectal cancer Incidence Prevalence Arab world

Drought Strategy Tolerance of Four Barley Cultivars and Combined Effect with Salicylic Acid Application

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American Journal of Plant Sciences 2019年第4期10卷 512-535页

作者： Hamdia M. Abd El-Samad mohamed Abdo Kheder Shaddad marwa mohamed Ragaey Botany and Microbiology Department Faculty of Science Minia University Minya Egypt

This investigation was conducting to explain that four barley genotypes varied in their drought tolerance according to their genotype and their tested organs. It can be recorded that growth parameters (fresh, dry matter and length, water content, leaf area and pigment contents) were decreased as decreasing M. C. in the soil. This indicated that Giza 123 was the superior in its drought tolerance and Giza 129 was the interior and both cv. Giza 2000 and cv. Giza 124 were the intermediated between them. This concomitant with increase in soluble sugar and soluble protein content of both organs in Giza 123 and shoot Ca++, this related with lower value of OP other than genotypes, in Giza 2000 this was related with a huge accumulation in soluble protein of shoot and root, shoot amino acids and root proline reach 3-folds than control plants as decreasing M. C. Whereas drought stress increased soluble protein only in Giza 124 while in Giza 129 decreasing M. C. increased soluble protein, amino acids and proline contents in shoot and root and shoot Ca++. The values of OP increased as decreasing M. C. in four barley cultivars concomitant with their drought tolerance. Also, SA application was markedly enhanced the production of growth parameters in shoot and root with varied degree according to each tested barley genotypes. SA application was significantly increased OP in shoot, root and spike of barley pants. Spraying vegetative parts with 0.5 mM SA was markedly increased the soluble sugar, soluble protein and amino acids in shoot, root and spike of four barley cultivars. On the other side, SA application lowered the accumulation of proline in shoot and root of barley genotypes. SA treatment induced no significant change in K+, Ca++, and Mg++ in shoot, root and spike of Giza 123, it significantly increased K+, Ca++, and Mg++ in shoot and root of Giza 2000. SA application enhanced accumulation of K+, Ca++ in shoot and root of Giza 124 and K+, Ca++ and Mg++in three organs of Giza

关键词： Drought Barley Cultivar Salicylic Acid