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Search Results: 1 - 10 of 165 matches for " Issam Yazough "
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Jejunojejunal Intussusception following Jejunostomy  [PDF]
Younes Aggouri, Karim Ibn Majdoub, Issam Yazough, Mourad Oussaid, Imane Tourghai, Said Ait Laalim, Khalid Mazaz
Surgical Science (SS) , 2015, DOI: 10.4236/ss.2015.64028

Intussusception is an invagination of a segment of the gastrointestinal tract into an adjacent one. Jejunojejunal intussusception is a rare complication of jejunostomy tube placement with an incidence of 1%. We are reporting a case of 35-year-old man who was suffering from severe oral, lesions due to Ingestion of acide agents. He received Witzel jejunostomy for early feeding. Ileus developed postoperatively and plain X-ray of the abdomen showed distended small bowel loop. Abdominal computed tomography revealed target sign as well as the feeding tube in a dilated jejunum and intussusception was diagnosed. Exploratory laparotomy was required due to failure of expectant therapy. Reduction of intussusception was done during exploratory laparotomy. The jejunostomy feeding was continued and the postoperative course was uneventful.

Squamous Cell Carcinoma of the Pancreas  [PDF]
Pierlesky Elion Ossibi, Issam Yazough, Amal Bennani, KarimIbn Majdoub, Imane Toughrai, Said Ait Laalim, Abdelmalek Ousadden, Laila Chbani, Khalid Mazaz, Khalid Ait Taleb
Surgical Science (SS) , 2014, DOI: 10.4236/ss.2014.510075
Abstract: 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 patient admitted to the emergency ward with acute cholangitis.
Hydatid Cyst of the Psoas: A Rare Location  [PDF]
Pierlesky Elion Ossibi, Issam Yazough, Saeed Abdul-Razak, Abdoul Aliou Zabeirou Oudou, Karim Ibn Majdoub, Imane Toughrai, Said Ait Laalim, Khalid Mazaz
Surgical Science (SS) , 2015, DOI: 10.4236/ss.2015.63019

Hydatid cyst of the psoas is rare even in countries endemic to hydatidosis. We hereby report a case of hydatid cyst of the psoas in a 69 years old patient with a history of hypertension and had received left nephrectomy due to a renal abscess 2 years prior to his admission.

Retroperitoneal Smooth Muscle Tumor of Uncertain Malignant Potential (STUMP): Case Report  [PDF]
Moussa Sylla, Pierlesky Elion Ossibi, Issam Yazough, Eddy Oleko Ekuke, El Bachir Benjelloun, Said Ait Laalim, Khalid Mazaz, Khalid Ait Taleb
Surgical Science (SS) , 2016, DOI: 10.4236/ss.2016.712070
Abstract: Retro peritoneal smooth muscle tumors of uncertain malignant potential (STUMP) are rare and often misdiagnosed as leiomyosarcoma. We hereby report the case of a retroperitoneal STUMP diagnosed on a surgical specimen in a 44-year-old woman without any history of disease.
Textiloma: A Case Report of Rectal Expulsion  [PDF]
Issam Yazough, Jean Marie Ovungu, Pierlesky Elion Ossibi, Franck Mvumbi, Said AitLaalim, Youssef Lamrani, Imane Toughrai, Karim Ibn Majdoub, Khalid Mazaz
Surgical Science (SS) , 2017, DOI: 10.4236/ss.2017.82010
Abstract: Textiloma is a rare pathological entity which can possibly complicate any surgery. Its incidence, reported in literature, is estimated between 1/1000 and 1/15,000. Abdominal and gynecological surgeries are responsible for the vast of majority of intra abdominal textiloma. Very few cases of spontaneous rectal expulsion of textiloma have been reported. We report the case of rectal expulsion of textiloma in a 26-year-old female who had undergone a C section for dynamic dystocia a year prior to her admission.
On Utilizing Model Transformation for the Performance Analysis of Queueing Networks  [PDF]
Issam Al-Azzoni
Journal of Software Engineering and Applications (JSEA) , 2018, DOI: 10.4236/jsea.2018.119026
Abstract: In this paper, we present an approach for model transformation from Queueing Network Models (QNMs) into Queueing Petri Nets (QPNs). The performance of QPNs can be analyzed using a powerful simulation engine, SimQPN, designed to exploit the knowledge and behavior of QPNs to improve the efficiency of simulation. When QNMs are transformed into QPNs, their performance can be analyzed efficiently using SimQPN. To validate our approach, we apply it to analyze the performance of several queueing network models including a model of a database system. The evaluation results show that the performance analysis of the transformed QNMs has high accuracy and low overhead. In this context, model transformation enables the performance analysis of queueing networks using different ways that can be more efficient.
The Effect of Glass Plate Thickness and Type and Thickness of the Bonding Interlayer on the Mechanical Behavior of Laminated Glass  [PDF]
Issam S. Jalham, Omar Alsaed
New Journal of Glass and Ceramics (NJGC) , 2011, DOI: 10.4236/njgc.2011.12007
Abstract: In this work the effect of the type of the bonding interlayer (polyvinyl butyral (PVB) or Ethyl Vinyl Acetate (EVA)), number of bonding layers, and the position and the thickness of the Glass plates on the maximum load capacity and absorbed energy by laminated glass. Furthermore, this investigation presents a mathematical model that relates the maximum force capacity of the glass laminated structure to the glass plate thickness, type and thickness of the inter-layer regardless the position of the fixed glass plate. Both practical work results and the theoretical model indicate that the maximum load capacity of laminated glass bonded with either PVB or EVA decreases as the interlayer thickness increases. Moreover, the maximum load capacity for the glasses bonded with EVA is greater than those for the PVB bonded ones under the same conditions. On the other hand, it was observed that that laminated glass absorbed energy increases with the increase of the interlayer thickness and the increase of glass plate thickness.
Radiotherapy on hidradenocarcinoma
Issam Lalya
North American Journal of Medical Sciences , 2011,
Abstract: Context: Clear cell Hidradenocarcinoma is a rare carcinoma arising from sweat glands. It is an aggressive tumor that most metastasizes to regional lymph nodes and distant viscera; surgery with safe margins is the mainstay of treatment. Case Report: We report a case of 68-year-old woman who presented with an invasive clear cell hidradenocarcinoma situated in the left parotid area which recurred 5 months after surgery, this recurrence was managed successfully by high-dose irradiation of the tumor bed (66 Gy) and regional lymphatic chains (50 Gy), after a follow-up of more than 15 months, the patient is in good local control without significant toxicity. Conclusion: Post operative radiotherapy allows better local control and should be mandatory when histological features predictive of recurrence are present: positive margins, histology poorly differentiated, perineural invasion, vascular and lymphatic invasion, lymph node involvement, and extracapsular spread.
Incremental PCA-LDA Algorithm
Issam Dagher
International Journal of Biometric and Bioinformatics , 2010,
Abstract: In this paper a recursive algorithm of calculating the discriminant features of thePCA-LDA procedure is introduced. This algorithm computes the principalcomponents of a sequence of vectors incrementally without estimating thecovariance matrix (so covariance-free) and at the same time computing the lineardiscriminant directions along which the classes are well separated. Two majortechniques are used sequentially in a real time fashion in order to obtain the mostefficient and linearly discriminative components. This procedure is done bymerging the runs of two algorithms based on principal component analysis (PCA)and linear discriminant analysis (LDA) running sequentially. This algorithm isapplied to face recognition problem. Simulation results on different databasesshowed high average success rate of this algorithm compared to PCA and LDAalgorithms. The advantage of the incremental property of this algorithmcompared to the batch PCA-LDA is also shown.
Pendant Ancillary Ligand Switches Off Auto-Oxidation of Group 13 Metal Alkyl Compounds Bearing Non-Bulky Alkyl Groups
Issam Kobrsi
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0100626
Abstract: The reaction of 3,5-di-2-pyridyl-1,2,4-triazole with excess Al(CH3)3 and Ga(CH3)3 afforded (3,5-di-2-pyridyl-1,2,4-triazolate)Al(CH3)2?3Al(CH3)3 (1) and (3,5-di-2-pyridyl-1,2,4-triazolate) Ga(CH3)2?3Ga(CH3)3 (2) respectively. 1 and 2 reacted with oxygen gas to produce (CH3)2M(μ-3,5-di-2-pyridyl-1,2,4-triazolate)(μ?-OCH3)M(CH3)2 (M = Al, 3; M = Ga, 4). 3 and 4 contain the non-bulky dimethylalumino moiety, yet they are indefinitely stable in the presence of oxygen gas. This increased stability towards oxygen is due to ancillary 2-pyridyl groups bonding to the metal centers producing a pseudo-trigonal pyramidal Al and Ga environments. This environment blocks oxygen from further inserting into the M–C bond. The Al–N(pyridine) and Ga–N(pyridine) bonds reported herein are extremely elongated yet inactive towards dissociation due to the chelate effect.
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