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The Pre-Diagnosis History of Gynecologic Tumors in Children

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Open Journal of Pediatrics 2023年第2期13卷 207-213页

作者： Othmane Alaoui Fatoumata Binta Baldé abdelhalim mahmoudi Khalid Khattala Bouabdallah Youssef Department of Pediatric Surgery Hassan II University Hospital of Faz Fez Morocco Faculty of Medicine and Pharmacy Sidi Mohamed Ben Abdallah University Fez Morocco

Introduction: Gynecologic tumors represent less than 5% of all solid tumors in children. Patients and Method: Through a prospective and descriptive study over 4-years, we included girls aged less than 15 years admitted for a gynecologic tumor. We collected and analyzed the medical data, and paid particular attention to the pre-diagnosis history. Results: Eleven girls met our criteria with a mean age of 8.5 years (2 - 13 years). Abdominal pain, abdominal distension or protrusion of a vaginal mass was the main symptoms. The patients were seen at least by one doctor outside the surgical structure [1] [2] [3]. Four of eleven were received by two different doctors before carrying out the evocative radiological assessment. The average consultation delay was 7-months (24 hours to 18 months). There were nine ovarian tumors and two vaginal tumors. The histological study revealed five of eleven (45%) malignant tumors. Conclusion: Gynecological tumors in children are rare. However, there is a significant proportion of malignant tumors. All doctors can be confronted with it and should not delay the radiological assessment.

关键词： Gynecologic Tumor Diagnostic Children

Appendicular Abscess: Unusual Clinico-Radiological Appearance

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Open Journal of Pediatrics 2022年第4期12卷 647-651页

作者： Ayoub Boutahar Imane Oualili Abderrahim Kamli Othman El Alaoui abdelhalim mahmoudi Khalid Khattala Youssef Bouabdallah Department of Pediatric Surgery Faculty of Medicine and Pharmacy of Fez University Hospital Center Hassan II Fes Morocco

Introduction: Appendicitis is the most common surgical emergency in childhood. It’s a common surgical disease that can be presented with a wide variety of atypical clinical features. Clinical Case: We report a case of a 7-year-old female patient admitted for abdominal pain dating back 20 days, radiological exploration suggested a right ovarian teratoma, while laparoscopic exploration has objective an appendicular abscess. Conclusion: This case has allowed us to clarify an atypical case of complicated appendicitis, and also to show the contribution of laparoscopy.

关键词： Appendicular Abscess Ovarian Teratoma Laparoscopic Exploration

Corticosurrenaloma: About a Pediatric Case

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Open Journal of Pediatrics 2022年第2期12卷 449-452页

作者： Thierry Mukenge Wa Mukengeshay Fatoumata Binta Balde Zineb Benmassaoud Priscilla Kinsala Othmane Allaoui abdelhalim mahmoudi Khalid Khattala Sara Benmilloud Youssef Bouabdallah Service de Chirurgie Pédiatrique Centre Hospitalier et Universitaire Hassan II de Fès Fès Morocco Service de Pédiatrie Unité d’Oncologie Centre Hospitalier et Universitaire Hassan II de Fès Fès Morocco Faculté de Médecine et de Pharmacie Université Sidi Mohamed Ben Abdallah de Fès Fès Morocco

Introduction: This study aims to describe the outcome of adrenocortical cancer in children through observation. Observation: A 10-year-old girl with no previous pathological history. She presented headaches and severe hypertension with clinical and biological signs of hyperandrogenism for 6 months. An abdominal CT scan showed an encapsulated left adrenal mass without local or regional invasion or secondary location. A pheochromocytoma or adrenal neuroblastoma was first suspected. The blood pressure was stable at 130/65 mmHg under antihypertensive drugs. She underwent a complete tumor resection without any intraoperative incident. The pathologic study confirmed the adrenocortical carcinoma scored Weiss 7. The severe high blood pressure reappeared 2-year later despite antihypertensive drugs. The thoracic abdominal and pelvic CT scan showed a locally advanced tumor recurrence in the left adrenal gland with parenchymal nodes in the lungs and liver. The outcome was fatal despite medical and surgical management. Conclusion: Adrenocortical cancer is a rare tumor. It is important to hormonal testing in the presence of Cushing’s syndrome in children. It can give a strong indication of the diagnostic possibilities. Histology confirms the diagnosis. The evolution is covered by complications, in particular recurrence with life-threatening metastases.

关键词： Adrenal Tumor Adrenal Cortex Hyperandrogenism Child

Endoscopic Assisted Eyebrow Craniotomy for Anterior Cranial Fossa Lesions: Clinical and Cosmetic Outcomes

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Open Journal of Modern Neurosurgery 2024年第1期14卷 30-47页

作者： Ahmed Hosameldin Hesham Elshetany Ehab abdelhalim Department of Neurosurgery Faculty of Medicine Fayoum University Fayoum Egypt Department of Neurosurgery Faculty of Medicine Cairo University Cairo Egypt

Background: The eyebrow supraorbital keyhole approach could be considered a modified minimally invasive model for the classic pterional subfrontal approach in which an eyebrow incision and supraorbital mini craniotomy are performed for exposure of the anterior cranial fossa corridor. Methods: This study was retrospectively conducted on twenty four patients, age ranging from 20 to 65 years old, with anterior cranial fossa lesions who were meeting the eligibility criteria for eyebrow craniotomy in the period from August 2019 to January 2023. These patients were operated through eyebrow supraorbital approach in which microscopic endoscopic assisted technique were used. Extent of resection, clinical and cosmetic outcomes and complication incidence were assessed. Results: We included the twenty four patients who met inclusion criteria (17 females and 7 males) their ages ranged from 20 to 65 years. The most common pathology was meningioma in 19 patients. Two patients experienced supraorbital loss of sensation and only one patient experienced palsy of frontalis branch of facial nerve. Frontal sinus was breached in 3 patients with no patient experienced postoperative CSF leak. Total excision was accomplished for 23 patients. Four patients who had preoperative visual compromise, improvement of visual acuity and field defects was observed in 3 patients. No major intraoperative complications occurred. All patients filled cosmetic satisfaction questionnaire during their outpatient visits. For the eyebrow supraorbital approach, no incision related intolerable pain, no craniotomy defects or irregularities, no cosmetic complaints nor limitation of jaw opening were reported, and only minor symptoms in the form of limited eyebrow elevation, swelling and numbness in the forehead. Conclusions: The eyebrow craniotomy could be used safely as a more cosmetic and minimally invasive approach for a variety of anterior cranial fossa lesions. Endoscopic assistance has been found very useful f

关键词： Eyebrow Supraorbital Approach Keyhole Craniotomy Microscopic Endoscopic Minimally Invasive

The Effect of Swirl Intensity on the Flow Behavior and Combustion Characteristics of a Lean Propane-Air Flame

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Fluid Dynamics & Materials Processing 2022年第6期18卷 1749-1762页

作者： Hemaizia Abdelkader Bentebbiche abdelhalim Laboratory of Energetic Mechanics and Conversion System University of Science and Technology Houari BoumedieneAlgiers16111Algeria

The effect of swirl number(Sn)on the flow behavior and combustion characteristics of a lean premixed propane FlameФ=0.5 in a swirl burner configuration was numerically verified in this ***-dimensional numerical simulations were performed using ANSYS-Fluent *** turbulence closure,a standard K-εturbulence model was *** turbulence-chemistry interaction scheme was modeled using the Finite Rate-Eddy Dissipation hybrid model(FR/EDM)with a reduced three-step reaction *** P1 radiation model was used for the flame radiation inside the combustion *** different swirl numbers were selected(0,0.72,1.05,and 1.4)corresponding to different angles(0°,39°,50°,and 57.8°).The results show that the predicted model agrees very well with the experimental data,especially with respect to the axial and radial velocity and temperature *** outer recirculation zone(ORZ)is present in the combustor corner at Sn=0 and an inner recirculation zone(IRZ)appears at the combustor centerline inlet at a critical Sn=*** the Sn reaches an excessive value,the IRZ moves toward the premixing tube,leading to a flame *** flame structure and its length are strongly affected by changes in the Sn as well as the formation of NOx and CO at the combustor exit.

关键词： Combustion premixed flame swirl number CO emissions angles ANSYS-fluent

Analytical Solution for Peristaltic Transport of Viscous Nanofluid in an Asymmetric Channel with Full Slip and Convective Conditions

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Communications in Theoretical Physics 2017年第7期67卷 96-102页

作者： abdelhalim Ebaid Emad H. Aly K. Vajravelu Department of Mathematics Faculty of Science University of Tabuk Tabuk 71491 Saudi Arabia Department of Mathematics Faculty of Science University of Jeddah Jeddah 21589 Saudi Arabia Department of Mathematics Faculty of Education Ain Shams University Roxy 11757 Cairo Egypt Department of Mathematics Department of Mechanical Materials and Aerospace Engineering University of Central Florida Orlando FL 32816 USA

The peristaltic ttow of nanofluids is a relatively new area of research. Scientists are of the opinion that the no-slip conditions at the boundaries are no longer valid and consequently, the first and the second order slip conditions should be addressed. In this paper, the effects of slip conditions and the convective boundary conditions at the boundary walls on the peristaltic flow of a viscous nanofluid are investigated for. Also, the exact analytical solutions are obtained for the model. The obtained results are presented through graphs and discussed. The results reveal that the two slip parameters have strong effects on the temperature and the nanoparticles volume fraction profiles. Moreover, it has been seen that the temperature and nanoparticles volume fraction profiles attain certain values when the first slip condition exceeds a specified value. However, no limit value for the second slip parameter has been detected. Further, the effects of the various emerging parameters on the flow and heat transfer characteristics have been presented.

关键词： nanofluid peristaltic flow slip model convective conditions asymmetric channel

Exact Solution of Non-Newtonian Blood Flow with Nanoparticles through Porous Arteries:A Comparative Study

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Computers, Materials & Continua 2020年第6期63卷 1143-1157页

作者： Wafaa Alharbi Abdulrahman Aljohani Essam El-Zahar abdelhalim Ebaid Department of Mathematics Faculty of ScienceUniversity of TabukTabuk71491Saudi Arabia Department of Mathematics College of Sciences and Humanities in Al-KharjPrince Sattam bin Abdulaziz UniversityAlkharj11942Saudi Arabia Department of Basic Engineering Science Faculty of EngineeringMenofia UniversityShebin El-Kom32511Egypt

In this paper,the mathematical model describing the third-grade non-Newtonian blood flow suspended with nanoparticles through porous arteries is exactly *** present physical model was solved in the research literature via the optimal homotopy analysis method and the collocation method,where the obtained solution was compared with the numerical fourth-order Runge-Kutta ***,the present paper only introduces a new approach to obtain the exact solution of the concerned system and implements such exact solution as a reference to validate the published approximate *** remarks on the previously published results are observed and discussed in detail through tables and *** view of the present calculations,the obtained results in the literature by Ghasemi et al.[Ghasemi,Hatami,Sarokolaie et al.(2015)]may need ***,it is found that the obtained approximate results in the relevant literature agree with the current exact ones up to only two or three decimal places,at ***,the present approach along with the obtained results reflexes the effectiveness and efficiency of our analysis when compared with the corresponding study in the ***,the present results can be directly invested for similar future problems of the same constructions.

关键词： Nanofluid blood flow porous artery nanoparticle exact solution

Mechanical and Metallurgical Characterization of HSLA X70Welded Pipeline Steel Subjected to Successive Repairs

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Acta Metallurgica Sinica(English Letters) 2016年第6期29卷 568-576页

作者： Bouzid Maamache Mabrouk Bouabdallah abdelhalim Brahimi Youcef Yahmi Billel Cheniti Brahim Mehdi Research Center in Industrial Technologies(CRTI) P.O.Box 6416014 CheragaAlgeria Laboratoire des Aeronefs Universite de Blidal09000 BlidaAlgeria LGSDS Ecole Nationale PolytechniqueEl Harrach16200AlgiersAlgeria LTSM Universite de Blidal09000 BlidaAlgeria ICMMO/SP2M Bat 410Universite Paris-Sud 1191405Orsay CedexFrance

The aim of this work is to study the influence of successive weld repairs on the microstructure and the mechanical behavior of the heat-affected zone（HAZ） of an HSLA X70 steel. Detailed microstructural examination combined to grain size measurement showed that beyond the second weld repair, the microstructure of the HAZ undergoes significant change in the grain morphology and grain growth. The results of the X-ray diffraction analyzed using MAUD software indicated an increase in the crystallite size and a decrease in the dislocation density according to the number of weld repair operations. Consequently, a loss of mechanical properties, namely the yield strength and the toughness with the number of weld repairs, was recorded. Beyond the second weld repair operation, the properties of the welded joint do not fulfill the standards applied in piping industry.

关键词： HSLA X70 steel Successive weld repair Heat affected zone Dislocation density

Modeling and optimization of induction cooking by the use of magneto-thermal finite element analysis and genetic algorithms

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Frontiers of Electrical and Electronic Engineering in China 2012年第3期7卷 312-317页

作者： Abdelkader KANSSAB abdelhalim ZAOUI Mouloud FELIACHI Departement d'Electrotechnique University of Hassiba BenboualiChlef 02000 Algeria Military Polytechnic School BP17 B.E.Bahri Algiers Algeria PRES-L'UNAM IREENA Bd de l'Universit6 BP 406 44602 St-Nazaire cedex France

Induction cooking has several advantages compared to traditional heating system; however, to obtain best efficiency, it is essential to have an inductor giving homogeneous temperature on the pan bottom. For this aim, we propose a structure of inductor with four throats containing coils and optimize their distribution. In this paper, first we model magneto-thermal phenomenon of the system by a finite element method （FEM） for the mean to determine the distribution of temperature on the pan bottom by taking the nonlinearity of system. This study shows that a temperature distribution is not homogeneous. Second, with the aim to have homogeneous temperature distribution on the pan bottom, the optimal determination of throats distribution and their dimensions is obtained by genetic algorithms （GAs）. The optimized structure permits to satisfy our aim.

关键词： finite element method magneto-thermaldevices genetic algorithms