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11 results on '"Alhayek A"'

2. Fibrous Meningioma in a Patient with Encephalocraniocutaneous Lipomatosis: A Rare Case with Unique Features

Author

Khalid El-Salem, Belal Aldabbour, Majdi Al Qawasmeh, and Kefah Alhayek

Subjects
Cerebral atrophy, Pathology, medicine.medical_specialty, Neurocutaneous Syndromes, business.industry, Brain tumor, General Medicine, medicine.disease, Meningioma, Epilepsy, Cytopathology, Encephalocraniocutaneous Lipomatosis, Medicine, Subcutaneous lipoma, business
Abstract

Encephalocraniocutaneous lipomatosis "ECCL" is a rare, sporadic neurocutaneous disorder that results from a lethal autosomal mutation surviving by somatic mosaicism. It is characterized by unilateral involvement of skin, eyes and central nervous system in addition to a propensity for mesenchymal tumors. A 30-year-old male with previously controlled epilepsy presented with recurrent seizures. Brain imaging revealed a left parietal parasagittal enhancing tumor, in addition to left sided gyriform calcifications, and bilateral cerebral atrophy and ventricular dilatation more prominent on the left side. He also presented multiple left sided sebaceous nevi and abundant subcutaneous lipomas in addition to left mandibular condylar cysts. The brain tumor was excised, and cytopathology revealed a WHO grade I fibrous meningioma. After a thorough evaluation and exclusion of alternative diagnoses, the patient was diagnosed with definite encephalocraniocutaneous lipomatosis as per Moog's criteria. Several cases of ECCL recently presented with different intracranial neoplasms. Here we report the first case of ECCL in association with meningioma.

Published
2020

5. Static characteristics of multicells jointed FRP tower with mass on its top

Author

Sami Alshurafa, Dimos Polyzois, and Hanan Alhayek

Subjects
Crane Equipment, Field (physics), business.industry, Mechanical Engineering, General Mathematics, 02 engineering and technology, Structural engineering, Fibre-reinforced plastic, 021001 nanoscience & nanotechnology, Finite element method, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, General Materials Science, 0210 nano-technology, business, Tower, Geology, Civil and Structural Engineering
Abstract

The size of steel tubular guyed towers has become very big, expensive to transport and to erect in the field since a special crane equipment is needed for erecting the tower components. Moreover, s...

Published
2019

6. Parametric study on the strength and stiffness of FRP meteorological guyed towers

Author

Dimos Polyzois, Sami Alshurafa, and Hanan Alhayek

Subjects
Materials science, business.industry, Mechanical Engineering, General Mathematics, Stiffness, 02 engineering and technology, Structural engineering, Fibre-reinforced plastic, Advanced materials, 021001 nanoscience & nanotechnology, Finite element method, 020303 mechanical engineering & transports, 0203 mechanical engineering, Mechanics of Materials, medicine, General Materials Science, medicine.symptom, 0210 nano-technology, business, Tower, Civil and Structural Engineering, Parametric statistics
Abstract

The research was conducted to explore the use of advanced materials to design an 81 m FRP guyed tower. Theoretical and experimental works are involved. Several non-linear finite element mod...

Published
2018

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