INTRODUCTION Articular cartilage is known to exhibit strong transient mechanical behavior. When subjected to high strainrate loading, its apparent stiffness can be 10 times greater than its stiffness at equilibrium. However, the mechanism of this strain-rate dependent response is not completely understood. While some studies have shown evidence of a fluid-flow dominant mechanism of the strain-r...

INTRODUCTION: Tendon viscoelastic behaviors are due to frictional losses that may arise from several sources: fluid flow, internal friction between aligned collagen fibers, intrinsic friction in extrafibrillar matrix components (e.g., proteoglycans and glycosaminoglycans), or interactions between the fibers and extrafibrillar matrix (1-4). While it is generally accepted that these are the poten...

conclusions in critically ill patients, the symptoms of hypophosphatemia may not be apparent, but clinicians should be vigilant about this complication during therapy. in cases of severe symptoms (e.g., cardiopulmonary distress, anemia and thrombocytopenia, or rhabdomyolysis), phosphate therapy under close surveillance is warranted. introduction although asymptomatic hypophosphatemia is a commo...

The flow of viscoelastic fluids is an area in which analytical results are difficult to attain, yet can provide invaluable information. We develop a weak-coupling expansion that allows for semi-analytical computations of viscoelastic fluid flows coupled to immersed structures. In our method, a leading-order polymeric stress evolves according to a Newtonian velocity field, and this stress is use...

A wide class of mathematical physics problems can be considered within the framework semi-linear Sobolev type equations, which describe various processes (for example deformation processes, occurring in semiconductors, oscillatory motion propagation media, and so on). The article is devoted to study control (optimal, start rigid) one model type, based on equation describing process changing con...