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Search Results: 1 - 10 of 5665 matches for " Sara Dehbi "
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Pseudo Papillary and Solid Pancreatic Tumor (PPSPT): A Diagnosis Not to Miss in Child  [PDF]
Hana Elmansouri, Kenza Elatiqi, Sara Dehbi, Salma Amouzoune, Hanane Rais, Ibtissam Zouita, Dounia Basraoui, Hicham Jalal
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105343
Abstract:
Pseudo papillary and solid pancreatic tumor (PPSPT) is a rare tumor that occurs almost exclusively in adolescents and young women. Radiological ex-ploration is mainly based on ultrasound and CT, which can often guide the diagnosis. We report the case of a 12-year-old girl, who was referred for suspicion of a hydatid cyst of the liver. Abdominal ultrasound showed a large solid-cystic mass, in contact with the hepatic hilum. Abdominal CT allowed a better study of the localization and the anatomical relationships of the mass. It was pancreatic head tumor encasing the portal vein and compressing the common biliary duct. The CT features suggest more a PPSPT or a pancreat-oblastoma. The pathological study after surgery confirmed the diagnosis of PPSPT.
UDNS or LES, That Is the Question  [PDF]
Christoph Bosshard, Michel O. Deville, Abdelouahab Dehbi, Emmanuel Leriche
Open Journal of Fluid Dynamics (OJFD) , 2015, DOI: 10.4236/ojfd.2015.54034
Abstract: In the framework of the spectral element method, a comparison is carried out on turbulent first-and second-order statistics generated by large eddy simulation (LES), under-resolved (UDNS) and fully resolved direct numerical simulation (DNS). The LES is based on classical models like the dynamic Smagorinsky approach or the approximate deconvolution method. Two test problems are solved: the lid-driven cubical cavity and the differentially heated cavity. With the DNS data as benchmark solutions, it is shown that the numerical results produced by the UDNS calculation are of the same accuracy, even in some cases of better quality, as the LES computations. The conclusion advocates the use of UDNS and calls for improvement of the available algorithms.
Phosphate Modified Copper Electrodes for Methanol Fuel Cell
Dehbi,Sanae; Massai,Harouna; Chtaini,Abdelilah;
Portugaliae Electrochimica Acta , 2010,
Abstract: this work aims to investigate the electro oxidation of methanol, in alkaline solution at a copper electrode modified with electrodeposited natural phosphate and nickel (ni-np/cu), by cyclic voltammetry, impedance measurements and square wave voltammetry. morphological characterizations were performed by sem and xrd techniques. it was found that ni dispersed on natural phosphate (np) shows a catalytic activity towards methanol oxidation better than massive ni. ni and np were fixed on copper electrode by electro deposition using potentiostatic and galvanostatic techniques.
Phosphate Modified Copper Electrodes for Methanol Fuel Cell
Sanae Dehbi,Harouna Massai,Abdelilah Chtaini
Portugaliae Electrochimica Acta , 2010,
Abstract: This work aims to investigate the electro oxidation of methanol, in alkaline solution at a copper electrode modified with electrodeposited natural phosphate and nickel (Ni-NP/Cu), by cyclic voltammetry, impedance measurements and square wave voltammetry. Morphological characterizations were performed by SEM and XRD techniques. It was found that Ni dispersed on natural phosphate (NP) shows a catalytic activity towards methanol oxidation better than massive Ni. Ni and NP were fixed on copper electrode by electro deposition using potentiostatic and galvanostatic techniques.
Cooling and hemodynamic management in heatstroke: practical recommendations
Abderrezak Bouchama, Mohammed Dehbi, Enrique Chaves-Carballo
Critical Care , 2007, DOI: 10.1186/cc5910
Abstract: A systematic review of all clinical studies published in Medline (1966 to 2006), CINAHL (Cumulative Index to Nursing & Allied Health Literature) (1982 to 2006), and Cochrane Database was performed using the OVID interface without language restriction. Search terms included heatstroke, sunstroke, and heat stress disorders.Fourteen articles reported populations subjected to cooling treatment for classic or exertional heatstroke and included data on cooling time, neurologic morbidity, or mortality. Five additional articles described invasive monitoring with central venous or pulmonary artery catheters. The four clinical trials and 15 observational studies covered a total of 556 patients. A careful analysis of the results obtained indicated that the cooling method based on conduction, namely immersion in iced water, was effective among young people, military personnel, and athletes with exertional heatstroke. There was no evidence to support the superiority of any one cooling technique in classic heatstroke. The effects of non-invasive, evaporative, or conductive-based cooling techniques, singly or combined, appeared to be comparable. No evidence of a specific endpoint temperature for safe cessation of cooling was found. The circulatory alterations in heatstroke were due mostly to a form of distributive shock associated with relative or absolute hypovolemia. Myocardial failure was found to be rare.A systematic review of the literature failed to identify reliable clinical data on the optimum treatment of heatstroke. Nonetheless, the findings of this study could serve as a framework for preliminary recommendations in cooling and hemodynamic management of heatstroke until more evidence-based data are generated.Heatstroke is a life-threatening condition characterized by a rapid increase in core temperature to more than 40°C and widespread, multiple organ tissue injury. It is a leading cause of mortality and neurologic morbidity when there is an unaccustomed and sustained in
4-[(3-Hydroxyanilino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one
Keraghel Saida,Benghanem Fatiha,Dehbi Ouarda,Ourari Ali
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812023082
Abstract: In the title compound, C23H19N3O2, the dihedral angles formed by the pyrazolone ring with the three benzene rings are 30.91 (6), 60.96 (4) and 57.01 (4)°. The ligand is in the enamine–keto form and its structure is stabilized by an intramolecular N—H...O hydrogen bond. In the crystal, O—H...N hydrogen bonds link molecules into chains parallel to [01-1].
Bis(4-benzoyl-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-olato-κ2O,O′)(methanol-κO)dioxidouranium(VI) methanol monosolvate
Ouarda Dehbi,Saida Keraghel,Sofiane Bouacida,Fatiha Benghanem
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812011075
Abstract: In the title compound, [U(C17H13N2O2)2O2(CH3OH)]·CH3OH, the UVI ion is coordinated by seven O atoms in a distorted pentagonal–bipyramidal geometry with two 3-methyl-1-phenyl-4-benzoyl-4,5-dihydro-1H-pyrazol-5-olate groups with two O atoms in a bidentate chelating coordination mode and by three O atoms, one of which is from a methanol ligand. The crystal packing can be described by alternating layers of complex molecules along the a axis. The structure is stabilized by O—H...N and O—H...O hydrogen bonding and van der Waals interactions.
FLT3-ITD Incidence and FLT-D835 Mutations in Acute Myeloid Leukemia Patients with Normal Karyotype in Morocco: A Preliminary Study
Hind Dehbi,Yaya Kassogue,Sanaa Nasserddine,Asma Quessar
Middle East Journal of Cancer , 2013,
Abstract: Background: According to numerous studies, FMS-like tyrosine kinase 3, internal tandem duplication, and the D835 mutation are associated with a poor prognostic clinical outcome in acute myeloid leukemia patients. Detection of the FMS-like tyrosine kinase 3 mutation in patients who present with normal karyotype acute myeloid leukemia helps in both the understanding of the disease and the treatment of patients. This study evaluates the incidence of FMS-like tyrosine kinase 3-internal tandem duplication and FMS-like tyrosine kinase 3-D835 mutation in newly diagnosed patients with normal karyotype acute myeloid leukemia.Methods: This study looked at 33 new cases who presented with normal karyotype acute myeloid leukemia at diagnosis. We collected peripheral blood samples from patients at diagnosis. FMS-like tyrosine kinase 3-internal tandem duplication mutation was detected using polymerase chain reaction and FMS-like tyrosine kinase 3-D835 mutation by restriction fragment length polymorphism after polymerase chain reaction.Results: FMS-like tyrosine kinase 3-internal tandem duplication mutation was found in 18% (6/33) of all patients and in 30% (6/20) of patients over 30 years of age. FMSlike tyrosine kinase 3-internal tandem duplication mutation was most common with M2 (50%), M5 (33.3%), and M0 (16.7%). FMS-like tyrosine kinase 3-D835 mutation was detected in one patient (3%) that had M2. No significant association was found between FMS-like tyrosine kinase 3 mutation and age, sex, white blood cell count, platelets, or blasts percentage.Conclusion: Most of FMS-like tyrosine kinase 3 mutations were found in patients older than 30 years. The frequency observed in this work is comparable with that observed in the literature. No pediatric case of FMS-like tyrosine kinase 3 mutation was found in this study. A large scale study is needed to confirm our findings and to further appreciate the prognostic value of FMS-like tyrosine kinase 3 mutation among Moroccan patients.
Relationships Between Cold Tolerance, Grain Yield Performance and Stability of Durum Wheat (Triticum durum Desf.) Genotypes Grown at High Elevation Area of Eastern Algeria
A. Mekhlouf,F. Dehbi,H. Bouzerzour,A. Hannchi
Asian Journal of Plant Sciences , 2006,
Abstract: To increase grain yield in the North African high plateaus, selection of durum wheat (Triticum durum Desf.) was accompanied by an early heading for effective utilization of the limited soil moisture and to escape terminal drought and heat stresses. Early genotypes suffer however seriously from low temperature damage during cold season. Developing cultivars resistant to low temperature stress appears critical to avoid crop failure and to stabilize grain yield. The objectives of the present study were to evaluate the genotypic variability for resistance to low temperatures using artificial tests and to investigate the relationship between the results of such tests and the agronomic performance and stability of a field grown set of durum wheat (Triticum durum Desf.) genotypes. The artificial laboratory tests employed enabled genotypes to be differentiated on the basis of their cold tolerance, results suggest that genotypes which possess the ability to cold acclimate during winter retain this feature until the booting stage. Means of agronomic traits varied significantly between seasons and genotypes, indicating the presence of significant genotypic variability and differential responses to the growth conditions experienced. No consistent relationships, between the tolerance to low temperatures and agronomic performances, were found due to the confounding effects of terminal heat and drought stresses, acting on the same yield components as the cold stress. Early, freezing tolerant and above average yielding cultivars were identified which serve as genetic source to improve tolerance to low temperatures in short cycle genetic background.
Homotopy Perturbation Method for Solving Moving Boundary and Isoperimetric Problems  [PDF]
Sara Ghaderi
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.35062
Abstract: In this paper, homotopy perturbation method is applied to solve moving boundary and isoperimetric problems. This method does not depend upon a small parameter in the equation. homotopy is constructed with an imbedding parameter p, which is considered as a “small parameter”. Finally, we use combined homotopy perturbation method and Green’s function method for solving second order problems. Some examples are given to illustrate the effectiveness of methods. The results show that these methods provides a powerful mathematical tools for solving problems.
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