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International Journal of Ophthalmology(English edition) 2022年第12期15卷 2031-2033页

作者： Hasan Mohidat omar s el-mulki Abdelwahab Aleshawi Ophthalmology Division Department of Special SurgeryFaculty of MedicineJordan University of Science and TechnologyIrbid 22110Jordan Retina Fellow Department of OphthalmologyKing Abdullah University HospitalIrbid 22110Jordan

Dear Editor,I nternal limiting membrane(ILM)peeling with gas tamponade has been the preferred surgical technique for the macular hole treatment[1-2].Eckardt et al[1]achieved a complete closure of 92%of the macular ***,the procedure involves peeling of ILM from the macula using a microvitreoretinal blade with an intraocular forceps 500 mm superior to the hole,removal of membranes and releasing the traction around the macular *** a macular epiretinal membrane(ERM)is present,it should be peeled during the surgery[1-2].

关键词： macular limiting releasing

stoichiometry and stability Constant Values for Copper (II) Chelates with Ethylene Diamine in Deep Eutectic solvents (DEs) (Ethaline) solutions

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Open Journal of Applied sciences 2024年第9期14卷 2592-2609页

作者： Khalid el Ttaib Abdolhadi Benhmid Rifat Hasan omar Chemistry Department Faculty of Science University of Benghazi Benghazi Libya

In this study we used the deep eutectic solvents (ionic liquids) to investigate the reaction between copper (II) with ethylene diamine (en). Two of the existing methods for analyzing spectrophotometric measurements have been applied for establishing, the stoichiometry and whenever possible, the stability constants of the chelates formed. The method of continuous variations was necessary to determine first whether, the metal ion and the ligand ethylene diamine form one or more than one chelate, when more than one chelate formed, the results obtained depend on the wavelength and for meaningful conclusions the wavelengths were carefully selected. The empirical formulae of the chelates were further substantiated by the molar ratio method. The effect of time and temperature on the formation and stability of these chelates in solution is also studied. The stability constants, K1 and K2 for the copper (II) chelates were calculated, though reliable, and are comparable to literature values.

关键词： Cu(II) Ethylene Diamine (en) Deep Eutectic solvents Job’s Method Ionic Liquids and stability Constant

Place of Bone scintigraphy in the Assessment of Extension and Follow-Up of Breast Cancer in senegal: study of 165 Cases in the Nuclear Medicine Department of Idrissa Pouye General Hospital (Dakar)

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Open Journal of Medical Imaging 2024年第1期14卷 10-30页

作者： el Hadji Amadou Lamine Bathily Mamoudou salif Djigo Djimby Ba Gora Thiaw Ousseynou Diop Kalidou Gueye Olatounde Herbert Fachinan Boucar Ndong omar Ndoye Mamadou Mbodj Nuclear Medicine Department Idrissa Pouye General Hospital (HOGIP) Dakar Senegal Biophysics Laboratory FMPO UCAD Dakar Senegal Nuclear Medicine Department Hospital Dalal Jamm Dakar Senegal Nursing and Obstetrics Training Institute Parakou University Parakou Benin

Introduction: Breast cancer is the most common cancer in women worldwide, accounting for an estimated 22% of all female cancers. It is the leading cause of cancer mortality in women, almost all of which is due to metastases, with 73% of metastases occurring in the bone. In oncology, metastable technetium 99-labelled methylene bisphosphonate bone scintigraphy (Bs) remains the standard examination for detecting and assessing the extent of bone metastases. The aim of this study was to assess the role of Bs in the evaluation and follow-up of breast cancer in senegal. Methodology: This was a retrospective study of breast cancer patients who underwent bone scintigraphy with sup>99msup>Tc-HMDP in the nuclear medicine department of Idrissa Pouye General Hospital (IPGHO), from July 2009 to June 2022. Results: We enrolled 165 patients, mean age 46.79 years (27 - 87 years). Bs was performed in 94.37% of cases for post-therapeutic monitoring and in 5.63% for pre-therapeutic assessment. Results were contributory in 131 patients (92.25%), of whom 72 cases (50.70%) were normal and 59 cases (41.55%) positive or presenting bone metastases;and non-contributory or doubtful in 11 cases (7.75%). secondary bone locations were multiple in 57 cases (96.61%) and single or solitary in 2 cases (3.39%). The scintigraphic appearance of bone metastases was hyper-fixative in 58 cases (98.31%) and mixed in 1 case (1.69%). Bone lesions were quantified using the soloway’s grading classification. Conclusion: Bs with sup>99msup>Tc-labelled bisphosphonates remains the examination of choice for skeletal exploration, in the detection and extension of bone metastases in breast cancer. Performance has been enhanced by the development of sPECT coupled with CT (sPECT-CT).

关键词： Breast Cancer Bone scintigraphy 99mTc-HMDP Bone Metastases

The Essential Oil of Ocimum americanum from senegal and Gambia as a source of Methyleugenol for the Control of Bactrocera dorsalis, Fruit Fly

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Journal of Agricultural Chemistry and Environment 2024年第1期13卷 133-141页

作者： Yoro Tine Antonio Alain Coffi sinzogan Ousmane Ndiaye Cebastiana sambou Alioune Diallo Ismaila Mbenga Kemo Badji el Hadji omar Dieng Assa Balayara Jeanne Diatta Cheikhouna Gaye Julien Paolini Jean Costa Alassane Wele saliou Ngom Laboratoire de Chimie Organique et Thérapeutique Faculté de Médecine Pharmacie et Odontologie Université Cheikh Anta Diop Dakar Sénégal Faculte des sciences Agronomiques Universite d’Abomey Calavi Cotonou Benin Ecole Nationale supérieure d’Agriculture (ENsA) Université Iba Der Thiam de Thiès Thiès Sénégal Direction de la Protection des Végétaux Rufisque Sénégal Laboratoire de Chimie des Produits Naturels Université de Corse Corte France National Agricultural Research Institute (NARI) Sere Kunda Gambia Institut sénégalais de Recherches Agricoles (IsRA) Dakar Sénégal

The fruit fly, Bactrocera dorsalis (Diptera: Tephritidae) is one of the most important pests in all mango-producing areas, particularly in West Africa. In senegal, O. americanum leaves have been used for several years to control this fly. However, to our knowledge, no chemical studies have been carried out. Thus, the aim of this study is to determine the chemical composition of the essential oil of O. americanum leaves collected in senegal and Gambia. The essential oil obtained by hydrodistillation of these leaves is analyzed by GC/FID and GC/Ms. Yields of essential oils from O. americanum leaves are 3.84% and 2.13%, respectively. Analysis of these essential oils by GC/FID and GC/Ms allowed the identification of 23 compounds representing almost 100% of the total compositions. These essential oils are mainly dominated by methyleugenol (72.0% and 75.8%, respectively). Other components in significant percent are trans-β-caryophyllene (13.9% and 13.0%, respectively), germacrene D (4.1% and 3.7%, respectively), β-elemene (3.3% and 0.9%, respectively). Due to the high methyleugenol content, this study explains the attractive potential of O. americanum towards B. dorsalis. In perspective, we plan to evaluate the attractive effect of the essential oil and leaf powder of O. americanum against B. dorsalis, a real pest of mango orchards in senegal.

关键词： Ocimum americanum Essential Oils Methyleugenol Bactrocera dorsalis GC/Ms

Effect of CuO Addition on the sintering Behavior and electrical Conductivity of 3Y-TZP

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Journal of Materials science & Technology 2007年第1期23卷 131-134页

作者： Ahmed A.Hassan omar Abdelal A. s.M.el-Hout Dept. of Metallurgy Nuclear Research CenterAtomic Energy AuthorityCairoEgypt

Yttria stabilized tetragonal zirconia polycrystals （3Y-TZP） doped with CuO was prepared, to get two compositions, 0.3 and 1 mole fraction CuO, respectively. The dilatometric study of the samples showed sintering to be improved for the samples doped with 0.3 mole fraction CuO, and to be deteriorated for the samples doped with 1 mole fraction CuO. The 1 mole fraction CuO doped 3Y-TZP showed higher tetragonal/monoclinic phase transformation which was accompanied by grain growth. The electrical conductivity decreased with the addition of CuO.

关键词： Y2O3 sintering aids electrical conductivity Fuel cells

Contribution of Bone scintigraphy in the Diagnosis of a Case of sAPHO in the Nuclear Medicine Department of Idrissa Pouye General Hospital (Dakar, senegal)

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Open Journal of Medical Imaging 2024年第1期14卷 1-9页

作者： el Hadji Amadou Lamine Bathily Kalidou Gueye serigne Moussa Badiane Mamoudou salif Djigo Gora Thiaw Ousseynou Diop Olatounde Herbert Fachinan Papa Mady sy Alfonse Rodrigue Djiboune Kokou Fofo Toussaint Adambounou Louis Augustin Diaga Diouf Boucar Ndong Gora Mbaye omar Ndoye Mounibé Diarra Mamadou Mbodj Nuclear Medicine Department Idrissa Pouye General Hospital (HOGIP) Dakar Senegal Biophysical Laboratory FMPO Cheikh Anta Diop University (UCAD) Dakar Senegal Biophysical Laboratory UFR2S Gaston Berger University (UGB) Saint-Louis Senegal Nuclear Medicine Department Hospital Dalal Jamm Dakar Senegal Laboratory of Physical and Pharmaceutical Biophysics FMPO Cheikh Anta Diop University Dakar Senegal Biophysical Laboratory University of Lome Lome Togo

Introduction: The acronym sAPHO (synovitis, Acne, Pustulosis, Hyperostosis and Osteitis) is a syndrome combining osteoarticular and cutaneous manifestations. It occurs mainly between the ages of 30 and 50. sternocostoclavicular hyperostosis is one of the main distinguishing features. We report a case of sAPHO in Dakar diagnosed by bone scintigraphy. Observation: 28-year-old senegalese women presented with left shoulder pain and relative functional impotence for over 2 years. Examination revealed right sternoclavicular hyperostosis and left shoulder pain on palpation. Questioning revealed a history of acne and hyperostosis of the right first toe. Bone scintigraphy, performed after injection of 630 MBq of sup>99msup>Tc-HMDP, revealed: hyperfixation of the bilateral (right++) manubrio-sternal and sternoclavicular junction, producing the classic bull’s horn image;hyperfixation of the left shoulder with an inflammatory appearance;hyperfixation of the sacroiliac joints suggestive of bilateral sacroiliitis;hyperfixation of the right first toe;two mandibular hyper fixations probably related to dental damage. This scintigraphic appearance in one was strongly suggestive of sAPHO syndrome. Conclusion: sAPHO syndrome, related to spondyloarthropathy, associates cutaneous and osteoarticular signs. It is characterized by frequent delays in diagnosis due to poor recognition. soy is an invaluable diagnostic tool, enabling us to assess the extent of the disease and its evolution.

关键词： sAPHO Bone scintigraphy Young Woman senegalese

Aspect-Oriented Modeling and Verification with Finite state Machines

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Journal of Computer science & Technology 2009年第5期24卷 949-961页

作者：徐殿祥 omar el-Ariss 许巍峰王林章 National Center for the Protection of the Financial Infrastructure Dakota State UniversityMadisonSD 57042 U.S.A. state Key Laboratory of Novel software Technology Department of Computer Science and TechnologyNanjing University Department of Computer science North Dakota State UniversityFargoND 58105 U.S.A Computer and Information science Department Gannon University109 University SquareEriePA 16541 U.S.A

Aspect-oriented programming modularizes crosscutting concerns into aspects with the advice invoked at the specified points of program execution. Aspects can be used in a harmful way that invalidates desired properties and even destroys the conceptual integrity of programs. To assure the quality of an aspect-oriented system, rigorous analysis and design of aspects are highly desirable. In this paper, we present an approach to aspect-oriented modeling and verification with finite state machines. Our approach provides explicit notations （e.g., pointcut, advice and aspect） for capturing crosscutting concerns and incremental modification requirements with respect to class state models. For verification purposes, we compose the aspect models and class models in an aspect-oriented model through a weaving mechanism. Then we transform the woven models and the class models not affected by the aspects into FsP （Finite state Processes）, which are to be checked by the LTsA （Labeled Transition system Analyzer） model checker against the desired system properties. We have applied our approach to the modeling and verification of three aspect-oriented systems. To further evaluate the effectiveness of verification, we created a large number of flawed aspect models and verified them against the system requirements. The results show that the verification has revealed all flawed models. This indicates that our approach is effective in quality assurance of aspect-oriented state models. As such, our approach can be used for model-checking state-based specification of aspect-oriented design and can uncover some system design problems before the system is implemented.

关键词： aspect-oriented modeling finite state machines modeling verification model checking

Geochemistry, mineralogy, and radioactivity of the Abu Furad Area, Central Eastern Desert, Egypt

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Acta Geochimica 2019年第2期38卷 307-326页

作者： A.M.el Mezayen E.K.Abu Zeid W.s.Hosny M.G.el-Feky s.M.omar s.A.Taalab Geology Department Faculty of Science Al Azhar University Nuclear Material Authority Cairo Egypt

Abu Furad is in the Central Eastern Desert,Egypt. It comprises metasediments, metavolcanics,metagabbros, syn-to late-orogenic granites, and post-orogenic granites, in addition to numerous dykes and veins of different shapes and composition invading all the older rocks cropping out in the study area. Field, petrographic,mineralogical, and chemical investigations led to the classification of Abu Furad granites as quartz diorite, tonalite,granodiorite, and *** oxide and trace element data revealed that the syn-to late-orogenic granites and post-orogenic granites are peraluminous. syn-to lateorogenic granites originated from calc-alkaline volcanic arc–related magma; while the post-orogenic granites(syenogranite) are highly fractionated, calc-alkaline granite from a within plate regime. Radiometrically, the studied quartz diorite, tonalite, and granodiorite had lower uranium and thorium contents and higher eU/eTh ratios than the syenogranites. This may indicate that the syn-to late-orogenic rocks originated from sources depleted in these elements. The average e Th/eU ratio of syenogranites was higher than that of average continental crust, suggesting that the syenogranites are relatively depleted in U. The studied altered syenogranites were strongly enriched in U and Th compared to the Earth's crust. On the other hand, the average of e U in pegmatites is lower than the global average for uraniferous pegmatites. The most recorded accessory minerals in the altered syenogranites were thorite, fergusonite, samarskite, columbite, zircon, monazite, xenotime,apatite, fluorite, sphene, atacamite, and malachite, in addition to chromium and nickel inclusions.

关键词： Hydrothermal alterations Major oxide and trace elements Radiometry Mineralogy Geochemistry Altered syenogranites Egypt

Dual Branches of MHD Three-Dimensional Rotating Flow of Hybrid Nanofluid on Nonlinear shrinking sheet

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Computers, Materials & Continua 2021年第1期66卷 127-139页

作者： Liaquat Ali Lund Zurni omar Ilyas Khan el-sayed Msherif school of Quantitative sciences Universiti Utara MalaysiaSintokKedah06010Malaysia KCAET Khairpur Mir’s Sindh Agriculture UniversityTandojamSindh70060Pakistan Faculty of Mathematics and statistics Ton Duc Thang UniversityHo Chi Minh CityVietnam Center of Excellence for Research in Engineering Materials King Saud UniversityAl-Riyadh11421Saudi Arabia electrochemistry and Corrosion Laboratory Department of Physical ChemistryNational Research CentreDokkiCairo12622Egypt

In this study,magnetohydrodynamic(MHD)three-dimensional(3D)flow of alumina(Al2O3)and copper(Cu)nanoparticles of an electrically conducting incompressible fluid in a rotating frame has been *** shrinking surface generates the flow that also has been *** single-phase(i.e.,Tiwari and Das)model is implemented for the hybrid nanofluid transport *** for alumina and copper nanomaterials in the water base fluid are *** layer approximations are used to reduce governing partial differential(PDEs)system into the system of the ordinary differential equations(ODEs).The three-stage Lobatto IIIa method in bvp4c solver is applied for solutions of the governing *** results have been shown to examine how velocity and temperature fields are influenced by various applied *** has been found that there are two branches for certain values of the suction/injection parameter b:The rise in copper volumetric concentration improved the velocity of hybrid nanofluid in the upper *** heat transfer rate improved for the case of hybrid nanofluid as compared to the viscous fluid and simple nanofluid.

关键词： Nonlinear surface viscous dissipation MHD Hybrid nanofluid two branches

Nonequivalent similarity Reductions and Exact solutions for Coupled Burgers-Type Equations

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Communications in Theoretical Physics 2012年第1期57卷 1-4页

作者： M.H.M.Moussa R.A.K.omar Rehab M.el-shiekh H.R.el-Melegy Department of Mathematics Faculty of EducationAin Shams UniversityHeliopolisCairoEgypt

Using the machinery of Lie group analysis,the nonlinear system of coupled Burgers-type equations is *** the infinitesimal generators in the optimal system of subalgebra of the said Lie algebras,it leads to two nonequivalent similarity transformations by using it we obtain two reductions in the form of system of nonlinear ordinary differential *** search for solutions of these systems by using the G'/G-method has yielded certain exact solutions expressed by rational functions,hyperbolic functions,and trigonometric *** figures are given to show the properties of the solutions.

关键词： symmetry method G/G-method coupled Burgers-type equations exact solutions