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您的检索式：作者名="Maha Hashim Mohammed"
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| 1 | Hypoglycemic and antioxidant activities of Caesalpinia ferrea Martius leaf extract in streptozotocininduced diabetic rats显示文摘Objective: To evaluate the antidiabetic and antioxidant ef ects of aqueous ethanolic extract of Caesalpinia ferrea(C. ferrea) leaf in normal and streptozotocin(STZ) induced diabetic rats.Methods: Male Sprague-Dawley rats divided into 6 groups of 6 rats each were assigned into diabetic and non-diabetic groups. Diabetes was induced in rats by single intraperitoneal administration of STZ(65 mg/kg body weight). C. ferrea extract at the doses of 250 and 500 mg/kg body weight was orally administered to both diabetic and non-diabetic animals for a period of 30 days. After completion of experimental duration serum, liver and pancreas were used for evaluating biochemical and histopathological changes.Results: Oral administration of C. ferrea leaf extract significantly reduced elevated serum glucose, α-amylase, liver function levels and signii cantly increased serum insulin, total protein and body weight as well as improved lipid proi le due to diabetes. Furthermore, the treatment resulted in a marked increase in glutathione peroxidase, superoxide dismutase, catalase and reduced glutathione, and diminished levels of lipid peroxidation in liver and pancreas of diabetic rats. Histopathological studies demonstrated the reduction in the pancreas and liver damage and coni rmed the biochemical i ndings.Conclusions: From the present study, it can be concluded that the C. ferrea leaf extract ef ectively improved hyperglycaemia while inhibiting the progression of oxidative stress in STZ-induced diabetic rats. Hence, it can be used in the management of diabetes mellitus. | Sherien Kamal Hassan Nermin Mohammed El-Sammad Amria Mamdouh Mousa Maha Hashim Mohammed Abd el Razik Hussein Farrag Amani Nassir Eldin Hashim Victoria Werner Ulrike Lindequist Mahmoud Abd El-Moein Nawwar | 2015 | Asian Pacific Journal of Tropical Biomedicine2015，5，6： | 3 |
| 2 | Sensor Faults Observer Design with H_∞ Performance for Non-linear T-S systems显示文摘This paper deals with the problem of the state estimation and the sensor faults detection for nonlinear perturbed systems described by Takagi-Sugeno(T-S)fuzzy models with unmeasurable premise variables.Indeed,a T-S observer is synthesized,in descriptor form,to estimate both the system states and the sensor faults simultaneously.The idea of the proposed approach is to introduce the sensor fault as an auxiliary variable in the state vector.Besides,the T-S model with unmeasurable premise variables is reduced to a perturbed model with measurable variables.Convergence conditions are established with Lyapunov theory and the H∞performance in order to guarantee the best robustness to disturbances.These conditions are expressed in terms of linear matrix inequalities(LMIs).The parameters of the observer are computed using the solution of the LMI conditions.Finally,a numerical example is given to illustrate the design procedures.Simulation results show the satisfactory performances. | Imen Haj Brahim Maha Bouattour Driss Mehdi Mohamed Chaabane Ghani Hashim | 2013 | International Journal of Automation and computing2013，10，6： | 0 |
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