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Study of scalar particles through the Klein–Gordon equation under rainbow gravity effects in Bonnor–Melvin-Lambda space-time

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Communications in Theoretical Physics 2024年第4期76卷 113-125页

作者： Faizuddin Ahmed abdelmalek Bouzenada Department of Physics University of Science&Technology MeghalayaRi-Bhoi793101India Laboratory of theoretical and applied Physics Echahid Cheikh Larbi Tebessi UniversityAlgeria

In our investigation,we explore the quantum dynamics of charge-free scalar particles through the Klein–Gordon equation within the framework of rainbow gravity,considering the Bonnor–Melvin-Lambda(BML)space-time background.The BML solution is characterized by the magnetic field strength along the axis of the symmetry direction which is related to the cosmological constantΛand the topological parameterαof the geometry.The behavior of charge-free scalar particles described by the Klein–Gordon equation is investigated,utilizing two sets of rainbow functions:(i)f(χ)=■,h(χ)=1 and(ii)f(χ)=1,h(χ)=1+βХ/2.Here 0<(Х=■)≤1 with E representing the particle's energy,Ep is the Planck's energy,andβis the rainbow parameter.We obtain the approximate analytical solutions for the scalar particles and conduct a thorough analysis of the obtained results.Afterwards,we study the quantum dynamics of quantum oscillator fields within this BML space-time,employing the Klein–Gordon oscillator.Here also,we choose the same sets of rainbow functions and obtain the approximate eigenvalue solution for the oscillator fields.Notably,we demonstrate that the relativistic approximate energy profiles of charge-free scalar particles and oscillator fields get influenced by the topology of the geometry and the cosmological constant.Furthermore,we show that the energy profiles of scalar particles receive modifications from the rainbow parameter and the quantum oscillator fields by both the rainbow parameter and the frequency of oscillation.

关键词： quantum fields in curved space-time relativistic wave equations solutions of wave equations bound-state special functions

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An inverse method for characterization of dynamic response of 2D structures under stochastic conditions

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Chinese Journal of Aeronautics 2024年第3期37卷 440-455页

作者： Xuefeng LI abdelmalek ZINE Mohamed ICHCHOU Noureddine BOUHADDI Pascal FOSSAT Laboratory of Tribology and Systems Dynamic Central School of LyonEcully 69134France Institut Camille Jordan Central School of LyonEcully 69134France Department of Applied Mechanics University of Burgundy Franche-ComtéBesancon 25000France

The reliable estimation of the wavenumber space(k-space)of the plates remains a longterm concern for acoustic modeling and structural dynamic behavior characterization.Most current analyses of wavenumber identification methods are based on the deterministic hypothesis.To this end,an inverse method is proposed for identifying wave propagation characteristics of twodimensional structures under stochastic conditions,such as wavenumber space,dispersion curves,and band gaps.The proposed method is developed based on an algebraic identification scheme in the polar coordinate system framework,thus named Algebraic K-Space Identification(AKSI)technique.Additionally,a model order estimation strategy and a wavenumber filter are proposed to ensure that AKSI is successfully applied.The main benefit of AKSI is that it is a reliable and fast method under four stochastic conditions:(A)High level of signal noise;(B)Small perturbation caused by uncertainties in measurement points’coordinates;(C)Non-periodic sampling;(D)Unknown structural periodicity.To validate the proposed method,we numerically benchmark AKSI and three other inverse methods to extract dispersion curves on three plates under stochastic conditions.One experiment is then performed on an isotropic steel plate.These investigations demonstrate that AKSI is a good in-situ k-space estimator under stochastic conditions.

关键词： Inverse method Dispersion relation Wavenumber space Periodic plates Stochastic conditions Wave propagation characterization

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Isolated liver tuberculosis abscess in a patient without immunodefi ciency: A case report

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World Journal of Hepatology 2010年第9期2卷 354-357页

作者： Karim Ibn Majdoub Hassani abdelmalek ousadden Amal Ankouz Khalid Mazaz Khalid Ait Taleb Department of General Surgery "B" Universitet Hospital Hassan II Department of General Surgery"A" Universitet Hospital Hassan II Department of General Surgery "A" Universitet Hospital Hassan II

Although hepatic tuberculosis is not a rare disease entity,tubercular liver abscess (TLA) is extremely rare.It is usually associated with foci of infection either in the lung and/or gastrointestinal tract or with an immunocompromised state.An isolated or primary TLA with no evidence of tuberculosis elsewhere is even rarer.We report on a 28 year old man who developed an isolated tuberculous liver abscess not associated with lung involvement.Ultrasonography and computed tomography of the abdomen showed the abscess lesions in the liver but the diagnosis of tuberculosis was conf irmed by histological examination of the wall of the abscess after surgical drainage.Although tuberculous liver abscess is very rare,it should be included in the differential diagnosis of abscess and unknown hepatic mass lesions.

关键词： Liver Isolated abscess Tuberculosis Surgical drainage Histological examination

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Gastro Intestinal Stromal Tumor: State of the Art through Our Experience of 64 Cases and a Literature Review

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Journal of Cancer Therapy 2020年第5期11卷 265-275页

作者： Saad Slaiki Hicham El Bouhaddouti abdelmalek ousadden Khalid Ait Taleb El Bachir Benjelloun Visceral Surgery Department CHU Hassan II Fes Morocco

Gastrointestinal stromal tumors are rare. They are a subject of controversy. We have reported 64 cases of gastrointestinal stromal tumor diagnosed in the surgery department of CHU Hassan II of FES between January 2014 and December 2018. The study involved 64 patients (34 men and 30 women) with an average age of 56. The circumstances of findings were dominated by abdominal pain (48 cases), vomiting 16 case followed by transit disorder with 9 cases. The tumor locations were mainly the stomach (n = 31), the small intestine (n = 28), the duodenum (n = 3), and the colon (n = 2). Ultrasound, endoscopy and CT were the main additional tests to detect tumor syndrome. 55 patients were treated by complete surgical excision. Tumor size ranged from 4cm to 18cm. Histologically, the spindle cell type was predominant in 88.91% of cases;epithelioid type was present in 7.81% of cases, while the mixed type was found in 3.6%. The analysis of the expression of CD 117 marker was present in 95.31%, while immunostaining with this marker returned negative in 3 cases;i.e. 5% whose c-kit was positive. Imatinib was indicated in 44 patients (63.60%), with 9 indications for metastatic tumor. As a neoadjuvant, imatinib was indicated in 5 patients, with remission in 28 patients (50.9%), stabilization in 4 patients (7.2%), 2 cases of tumor recurrence and 7 cases of death.

关键词： Stromal Tumor Imatinib Surgery GIST

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A Rare Cause of Stomach Gangrene: Necrotizing Gastritis

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Open Journal of Gastroenterology 2015年第2期5卷 7-10页

作者： Hicham El Bouhaddouti Tarik Souiki Khalid Mazine abdelmalek ousadden Khalid Mazaz Khalid Ait Taleb Department of Visceral Surgery University Hospital Hassan II-Fes Faculty of Medicine and Pharmacy of Fez Sidi Mohamed Ben Abdellah University Fez Morocco

Necrosis of the stomach is rare. It occurs when there is vascular anomalies, gastric volvulus or her-niation and in infectious gastritis. We report a case in which infectious gastritis leads to a necrotiz-ing gastriti... 详细信息

关键词： Gastric Necrosis Necrotizing Gastritis Surgery

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Annular pancreas producing duodenal obstruction: A case report

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Open Journal of Gastroenterology 2013年第3期3卷 202-204页

作者： Abdesslam Bouassria Hicham Elbouhaddouti Ouadii Mouaqit El Bachir Benjelloun abdelmalek ousadden Khalid Mazaz Khalid Ait Taleb Department of General Surgery “A” University Hospital Hassan II Fez Morocco Department of General Surgery “B” University Hospital Hassan II Fez Morocco

Annular pancreas is a rare congenital anomaly characterized by the presence of ectopic pancreatic tissue surrounding the duodenum. This malformation is usually asymptomatic in adults, but can manifests as pancreatitis, duodenal stenosis, or duodenal or gastric ulceration. We report the case of a young patient of 18 years old hospitalized for epigastric pain and vomiting, in whom radiological investigations showed an annular pancreas. At operation, a complete obstruction of the duodenum between its first and second parts was found, caused by an annular pancreas. No other congenital anomaly of the intra abdominal organs was noted. A gastroenterostomy was performed. Both the rarity of this congenital abnormality and its successful correction by surgical means have prompted us to make the following presentation.

关键词： Annular Pancreas Duodenal Stenosis Gastroenterostomy

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Hemobilia Due to an Iatrogenic Arteriobiliary Fistula Complicating Laparoscopic Cholecystectomy: A Case Report

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Open Journal of Gastroenterology 2014年第6期4卷 275-278页

作者： Hicham El Bouhaddouti Khalid Mazine Abdesslam Bouassria Ouadii Mouaqit Elbachir Benjelloun abdelmalek ousadden Khalid Ait Taleb Department of Visceral Surgery Faculty of Medicine and Pharmacy of Fez University Hospital Hassan II—Fes Sidi Mohamed Ben Abdellah University Fez Morocco

Hemobilia is the result of a pathological communication between bile duct and intra or extrahepatic vessel. 40% to 60% of the haemobilia cases are Iatrogenic, and the other causes are either vascular malformations or hepatic blunt trauma. We describe the case history of a patient in which laparoscopic cholecystectomy was complicated 3 months later by massive hemobilia. The cause of haemorrhage was a fistula between the principal bil duct and the right hepatic artery. This complication was successfully managed by surgery and angiographic embolization with full recovery of the patient.

关键词： Hemobilia Gastrointestinal Bleeding Arteriography

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Desmoplastic small round cell tumor of the abdomen: A case report and literature review of therapeutic options

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Health 2012年第4期4卷 207-211页

作者： Hafida Benhammane Leila Chbani abdelmalek ousadden Ouadii Mouquit Siham Tizniti Afaf Riffi Amarti Nouafal Mellas Omar El Mesbahi Department of general surgery Hassan II University Hospital Fez Morocco Department of medical oncology Hassan II University Hospital Fez Morocco Department of pathology Hassan II University Hospital Fez Morocco Department of radiology Hassan II University Hospital Fez Morocco

Desmoplastic small round cell tumor (DSRCT) is a rare and highly aggressive variety of sarcoma arising typically from abdominal or pelvic peritoneum. Diagnosis and treatment approaches of this entity are complex and require a skilled, experienced, multidisciplinary team. Authors report their experience with a case of an intraabdominal DSRCT arising in a 37-year-old young man in order to discuss the clinico-pathological and radiological behavior of this tumor and underline diagnostic and therapeutic difficulties.

关键词： Desmoplastic Small Round Cell Tumor Abdomen Histology Chemotherapy Surgery Outcome

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Pseudotumoral Colic Tuberculosis: A Rare Pathological Entity

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Surgical Science 2016年第12期7卷 522-527页

作者： Eddy Oleko Ekuke Pierlesky Elion Ossibi El Mahdi Benkoukous Moussa Sylla Boubacar Efared Laila Chbani abdelmalek ousadden Khalid Mazaz Khalid Ait Taleb Visceral Surgery Department Hassan II University Hospital Fez Morocco Anatomy and Pathological Cytology Department Hassan II University Hospital Fez Morocco

Colic tuberculosis is rare even in countries endemic to Mycobacterium spp. Its incidence seems to be increasing over the last decade. Presentation in the form of abdominal mass is exceptional and often misdiagnosed as gastrointestinal tumor. The possibility of a colic involvement of this infection needs to be considered given the broad spectrum of clinical manifestations of TB infection. We present a case of pseudo colic tuberculosis in a 58-year-old patient with no history of disease.

关键词： Colon Tuberculosis Pseudo-Tumor

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Squamous Cell Carcinoma of the Pancreas

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Surgical Science 2014年第10期5卷 487-489页

作者： Pierlesky Elion Ossibi Issam Yazough Amal Bennani KarimIbn Majdoub Imane Toughrai Said Ait Laalim abdelmalek ousadden Laila Chbani Khalid Mazaz Khalid Ait Taleb Visceral Surgery Department Hassan II University Hospital Fez Morocco Anatomy and Pathological Cytology Department Hassan II University Hospital Fez Morocco

Exocrine pancreatic tumors are dominated by adenocarcinomas that have a poor prognosis. Squamous Cell Carcinoma of the pancreas is rare. We report a case of squamous cell carcinoma of the pancreas in a 75-year-old pat... 详细信息

关键词： Carcinoma Squamous Cell Pancreas

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