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活化硅胶表面Fe^(3+)的担载及其对甲醛的催化氧化

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无机化学学报 2015年第3期31卷 479-484页

作者： lotfia-el majdoub 姚方滔史亚赛黎甜甜徐庆红北京化工大学化工资源有效利用国家重点实验室北京100029

硅胶颗粒经过400℃高温活化后与四氯化硅在无水四氢呋喃溶剂中反应制得氯化硅胶。氯化硅胶再经乙酰胺修饰,制备得到表面含羰基和氨基的硅胶修饰体。此组装体具有良好的配位能力,能够与Fe3+进行配位,从而得到表面催化活性点均匀分布的负... 详细信息

硅胶颗粒经过400℃高温活化后与四氯化硅在无水四氢呋喃溶剂中反应制得氯化硅胶。氯化硅胶再经乙酰胺修饰,制备得到表面含羰基和氨基的硅胶修饰体。此组装体具有良好的配位能力,能够与Fe3+进行配位,从而得到表面催化活性点均匀分布的负载型催化剂。该催化剂对甲醛催化氧化具有良好的催化性能,最高催化效率高达91.3%。

关键词：活化硅胶表面有机化担载催化氧化甲醛

聚苯胺类/n-Si(111)单晶硅复合电极:制备与光电性质（英文）

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无机化学学报 2015年第11期31卷 2257-2264页

作者： lotfia el majdoub 李军张月娟李妮丽徐庆红北京化工大学理学院化工资源有效利用国家重点实验室北京100029

在过氧化月桂酰作用下,于n-Si(111)型单晶硅表面上分别嫁接苯胺及烷基取代苯胺,进而实现晶体硅表面上聚苯胺和烷基取代聚苯胺的原位聚合,制备得到了系列聚苯胺(或烷基取代聚苯胺)/n-Si(111)单晶硅复合电极。此外,对上述合成电极表面苯... 详细信息

在过氧化月桂酰作用下,于n-Si(111)型单晶硅表面上分别嫁接苯胺及烷基取代苯胺,进而实现晶体硅表面上聚苯胺和烷基取代聚苯胺的原位聚合,制备得到了系列聚苯胺(或烷基取代聚苯胺)/n-Si(111)单晶硅复合电极。此外,对上述合成电极表面苯胺链进行磺化,得到系列磺酸基化的单晶硅复合电极。电化学研究结果显示,聚苯胺直接嫁接于晶体硅表面所得到的复合电极光电转化效率最高,苯胺聚合链通过碳碳双键桥连于单晶硅表面所得到复合电极的光电转化效率高于通过碳碳单键桥连得到的复合电极,但其光电转化效率低于苯胺聚合链直接桥连于晶体硅表面而得到的复合电极。另外发现,苯环磺酸基化有利于提高复合电极的光电转化效率。

关键词：半导体表面化学薄膜合成设计电化学

Adaptive Backstepping Control Design for Semi-Active Suspension of Half-Vehicle With Magnetorheological Damper

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 582-596页

作者： Khalid el majdoub Fouad Giri Fatima-Zahra Chaoui Department of electrical Engineering University Hassan IIFaculty of Science and TechnologyMohammedia 20030Morocco Department of electrical Engineering University de Caen NormandieCaen 14032France Department of electrical Engineering University Mohamed VRabat 10000Morocco

This paper investigates the problem of controlling half-vehicle semi-active suspension system involving a magnetorheological(MR)*** features a hysteretic behavior that is presently captured through the nonlinear Bouc-Wen *** control objective is to regulate well the heave and the pitch motions of the chassis despite the road *** difficulty of the control problem lies in the nonlinearity of the system model,the uncertainty of some of its parameters,and the inaccessibility to measurements of the hysteresis internal state *** Lyapunov control design tools,we design two observers to get online estimates of the hysteresis internal states and a stabilizing adaptive state-feedback *** whole adaptive controller is formally shown to meet the desired control *** theoretical result is confirmed by several simulations demonstrating the supremacy of the latter compared to the skyhook control and passive suspension.

关键词： Adaptive control backstepping control Bouc-Wen model half vehicle model magnetorheological(MR)damper semiactive suspension skyhook control state observation

Existence and Uniqueness of Strong Solution for Shear Thickening Fluids of Second Grade

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Journal of Partial Differential Equations 2014年第2期27卷 95-114页

作者： BOUSBIH Hafedh majdoub Mohamed Universite de Sousse Institut Superieur des Sciences Appliquees et de Technologie deSousse Cite Ibn Khaldoun Sousse 4003 Tunisie. Universite de Tunis el Manar Faculte des Sciences de Tunis LRO3ES04 Equationsaux derivees partielles et applications 2092 Tunis Tunisie.

In this paper we study the equations governing the unsteady motion of an incompressible homogeneous generalized second grade fluid subject to periodic boundary conditions. We establish the existence of global-in-time strong solutions for shear thickening flows in the two and three dimensional case. We also prove uniqueness of such solution without any smallness condition on the initial data or restriction on the material moduli.

关键词： Non-Newtonian fluids generalized second grade fluids shear rate dependent viscosity existence uniqueness strong solution.

Liposarcoma of the Spermatic Cord

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Case Reports in Clinical Medicine 2014年第9期3卷 518-520页

作者： Pierlesky elion Ossibi Hicham Anoune Khalid el Haoudi Karim Ibn majdoub Imane Toughrai Said Ait Laalim Khalid Mazaz Visceral Surgery Department HASSAN II University Hospital Fez Morocco

Few cases of Liposarcoma of the spermatic cord have been reported in the literature. This rare tumor represents 7% of malignant tumors of the spermatic cord. We report a case of an unusual liposarcoma of the spermatic cord, with respect to its sclerosing variant, occurring in a healthy looking 42 years old man. A wide local excision of the tumor was performed. Adjuvant radiotherapy may sometimes be effective on local recurrence. Even though this tumor evolves slowly, a prolonged follow up is required because of the risk of late recurrence.

关键词： Liposarcoma Spermatic Cord Surgery

Spontaneous Cholecystocutaneous Fistula of Anterior Abdominal Wall with Subcutaneous Gallstones: About a Rare Case and Review of the Literature

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Surgical Science 2014年第2期5卷 43-45页

作者： Khalid el Haoudi Pierlesky elion Ossibi Salima Rezzouk Mourad Oussaid Karim Ibn majdoub Hassani Said Ait Laalim Imane Toughrai Khalid Mazaz Visceral Surgery Department HASSAN II University Hospital Fez Morocco

Spontaneous cholecystocutaneous fistula is a rare complication of chronic calculous cholecystitis, because currently gallstones are diagnosed and treated at an early stage. This occurrence is possible even if it seems actually to be rare. We report a case of spontaneous cholecystocutaneous fistula of Anterior Abdominal Wall with subcutaneous gallstones admitted in the medical oncology unit of HASSAN II University Hospital. An 64-year-old woman, presented with a large subcutaneous abscess in the right subcostal area with swelling. An abdominal computed tomography scan showed a subcutaneous gallstone and communication between the abscess and the gallbladder. Cholecystectomy was performed and the abdominal wall abscess was drained externally. This case report demonstrates that maintaining a high degree of suspicion of this rare entity is helpful in achieving correct preoperative diagnosis, and that computed tomography scan should be performed in all cases of unexplained abdominal wall suppuration.

关键词： Gallbladder Fistula Gallstones Abscess

Fasciitis on Abdominal Craniectomy Implantation

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Surgical Science 2014年第10期5卷 479-482页

作者： Pierlesky elion Ossibi Salima Rezzouk Ibrahima Berete KarimIbn majdoub Imane Toughrai Said Ait Laalim Abdelmalek Ousadden Mohammed Chaoui el Faiz Khalid Mazaz Khalid Ait Taleb Visceral Surgery Department Hassan II University Hospital Fez Morocco Neurosurgery Department Hassan II University Hospital Fez Morocco

Necrotizing fasciitis is an infection of the skin and deep subcutaneous tissue. It is caused by bacteria (group A streptococcus), but may also be idiopathic ora secondary complication of surgery. We report a case of n... 详细信息

关键词： Fasciitis Craniectomy Abdominal Implantation