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Primary Laryngeal Tuberculosis

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International Journal of Clinical Medicine 2015年第4期6卷 249-251页

作者： Madiha Mahfoudhi khaled khammassi Amel Gaieb Battikh Mamia Ben Salah Sami Turki Department of Internal Medicine A. Charles Nicolle Hospital Tunis Tunisia Department of Oto-Rhino-Laryngology Charles Nicolle Hospital Tunis Tunisia

Primary laryngeal tuberculosis is rare. It can manifest as a malignancy delaying the diagnosis and the therapeutic management. We report the case of a 34-year-old immunocompetent man whose plaints were fever, sweat and dysphonia. There were no adenopathy, nor hepatosplenomegaly. Several blood cultures were negative. Laboratory studies showed an inflammatory syndrome. In addition, the bacteriological examinations of sputum and urine in search of Mycobacterium tuberculosis were negative. Laryngoscopy confirmed the presence of a thickness of the right vocal cord and an ulcer in the hemilarynx. The histological examination revealed tuberculoid granulomas suggestive of tuberculosis. The culture from vocal cord tissue for Mycobacterium tuberculosis was positive. No other focus of tuberculosis was found on X-ray and computed tomography. Treatment by a combination of isoniazid, rifampicin, pyrazinamide induced a total resolution of symptoms.

关键词： Larynx Tuberculosis Dysphonia

Primary Thyroid Non-Hodgkin’s Lymphoma

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Open Journal of Pathology 2015年第4期5卷 114-116页

作者： Madiha Mahfoudhi khaled khammassi Imen Gorsane Mounira El Euch Sami Turki Mamia Ben Salah Taieb Ben Abdallah Department of Internal Medicine Charles Nicolle Hospital Tunis Tunisia Department of Oto-Rhino-Laryngology Charles Nicolle Hospital Tunis Tunisia

Primary non-Hodgkin’s lymphoma of the thyroid gland was rarely described. We report the case of a 44-year-old man admitted for an anterior neck swelling, hoarseness and dyspnea. The chest radiograph showed a trachea deviation. He had no clinical, biological or radiological sign of other lymphoma locations. Ultrasound examination of the neck revealed a bilateral heterogeneous thyroid lesion. Cytology revealed lymphoid cells having high nuclear-cytoplasmic ratio with multiple and irregular nucleoli. An urgent thyroid surgery consisting of total thyroidectomy had been performed since the presence of compressive signs due to the tumor. The histopathological examination of a biopsy from the thyroid tissue confirmed a high-grade non-Hodgkin’s lymphoma. Then, L-thyroxin substitution therapy, chemotherapy and radiotherapy were initiated. A prolonged remission was noted.

关键词： Thyroid Gland Lymphoma Immunohistochemistry

Phenological stage effect on phenolic composition and repellent potential of Mentha pulegium against Tribolium castaneum and Lasioderma serricorne

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Asian Pacific Journal of Tropical Biomedicine 2018年第4期8卷 207-216页

作者： Nidhal Salem Jazia Sriti Olfa Bachrouch Kamel Msaada Saber khammassi Majdi Hammami Saoussen Selmi Emna Boushih Marwa Ouertani Nesrine Hachani Manef Abderraba Brahim Marzouk Ferid Limam Jouda Mediouni Ben Jemaa Laboratoire des Substances Bioactives Centre de Biotechnologie a la Technopole de Borj Cedria Laboratoire de Protection des Vegetaux Institut National de la Recherche Agronomique de Tunisie (INRAT) Institut Superieur des Sciences Biologiques Appliquees de Tunisia Laboratoire de Biotechnologie Appliquee a l'Agriculture Institut National de la Recherche Agronomique de Tunisie (INRAT)

Objective:To elucidate for the first time the phenological stage effect on polyphenol,flavonoid and proanthocyanidin contents of pennyroyal(Mentha pulegium)as well as their antioxidant capacities and insecticidal potentials against Tribolium castaneum and Lasioderma ***:Crude methanol extracts from pennyroyal(Mentha pulegium)aerial parts were evaluated for their anti radical,reducing power activities and repellent potentials against selected coleopteran insects during different phenological ***:Phenolic contents of pennyroyal aerial parts and their antioxidant effects were significantly dependent on maturity stage of the *** maximum of phenol production was reached during the full flowering *** was the major phenol in Mentha pulegium with an amount of6.01 mg/g of dry vegetable matter during this ***,at fructification stage,the highest antioxidant activity was not related to high phenolic *** repulsive effect of pennyroyal extract showed that Lasioderma serricorne was more susceptible to pennyroyal extract than Tribolium castarneum with corresponding median repellent dose values of 0.124and 0.006 mg/mL ***,great differences in insect repulsion depending on extract concentrations,exposure time and developmental stage was *** the lowest concentration(0.125 mg/mL),the repellent effect against Tribolium reached its maximum(90%)during the fructification stage(after 24 h of exposure)while this repellent effect was 80%during the vegetative ***:Due to the strong insecticidal potential of pennyroyal extracts,this study highlights the therapeutic properties of this plant and encourages its use as a safer,environmental-friendly and efficient insecticide in food industry.

关键词： Apigenin Lasioderma Repellent activity Full flowering stage

Cascaded H-Bridges Asymmetrical 11-Levels Optimization

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材料科学与工程（中英文B版） 2011年第4期1卷 496-503页

作者： Mohamed Nejib Ben Nasr khammassi Anis Kebir Faouzi Ben Ammar Unite de Recherche SICISI ESSTT 5av. Taha Hussein BP 56 Bab Mnara-lO08 Universite de Tunis Tunisia Unitd de Recherche.＂ LSE INSA T Centre Urbain Nord BP 676 1080 Tunis

The following dissertation aims at investigating the multilevel topology basis through the analyses of the harmonic elimination control modeling methodology of the asymmetrical inverter. Thus the contribution of this paper can be summarized mainly by the fact that the pre-calculated PWM control used to control the symmetrical structure, as applied to the asymmetrical structure with a reduced number of cells, provides the same performance level resolution and signal strength to the load terminals, which guarantees a constant voltage frequency report. This observation is similar for the three cells, which allows the use of different drivers such as MOSFET, IGBT and GTO. These results have a good performance from the intrinsic proprieties of each semiconductor for each cell.

关键词：水平分辨率不对称非对称结构优化 H桥级联 MOSFET 消谐控制

Harmonic Distortion Rate Analysis of H-Bridges Multilevel Inverter

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材料科学与工程（中英文B版） 2011年第3期1卷 308-315页

作者： Mohamed Nejib Ben Nasr khammassi Anis Kebir Faouzi Ben Ammar Unite de recherche SICISI ESSTT 5av. Taha Hussein BP 56 Bab Mnara-1008 Universite de Tunis Tunisia Unite de recherche. LSE INSAT Centre Urbain Nord BP 676 1080 Tunisia

This paper represents comparative study on two control techniques applied to H-bridges multilevel inverter. The considered techniques are standard PWM and harmonic elimination control. Their performances are compared in terms of THD and commutation’s losses so that the choice of power switches is optimized. Simulation results indicated that the harmonic elimination technique exhibits better results than the standard PWM technique, which is sustained by the reduce of the commutation losses, and a power rise for the switches ensuring the use of GTOs, IGCTs.

关键词：多电平逆变器 H桥失真率 PWM技术谐波技术标准电源开关控制技术