Publications by authors named "Mohammed Al-Refai"
Article Synopsis
- - GISTs (Gastrointestinal stromal tumors) are the most common type of tumors found in the GI tract, usually located in the stomach and small intestine, and can be classified into spindle cell, epithelioid, and mixed types.
- - A case study described a 23-year-old female with a large intra-abdominal mass who experienced symptoms like dysphagia and early satiety for a year before seeking medical help.
- - The diagnosis of her significant left retroperitoneal mass, measured at 17 × 12 × 21 cm, necessitated surgical intervention, highlighting the need for awareness of such rare tumors in young adults.
Inflammatory myofibroblastic tumors (IMTs) of the lung are a rare type of mesenchymal tumors that tend to occur more in the lungs of children. They are extremely rare in adults. IMTs require extensive pulmonary resection because they are commonly locally invasive.
View Article and Find Full Text PDFIn this paper, we study linear and nonlinear fractional eigenvalue problems involving the Atangana-Baleanu fractional derivative of the order 1<δ<2. We first estimate the fractional derivative of a function at its extreme points and apply it to obtain a maximum principle for the linear fractional boundary value problem. We then estimate the eigenvalues of the nonlinear eigenvalue problem and obtain necessary conditions to guarantee the existence of eigenfunctions.
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