Solitary plasmacytomas are tumors of plasma cell origin that constitute less than 10% of all plasma cell neoplasms. These tumors are categorized as extramedullary plasmacytomas (non-osseous) or solitary plasmacytomas of bone (osseous). Extramedullary plasmacytomas frequently remain localized and usually can be treated effectively with radiation therapy, whereas solitary plasmacytomas of bone fr...

Solitary fibrous tumors are neoplasms of mesenchymal origin that may occur virtually in any body part, most commonly arising from the pleura. Solitary fibrous tumor of the kidney is exceptionally rare, and limited clinical knowledge regarding its behavior makes prognosis of the neoplasm difficult. We report a case of solitary fibrous tumor of the left kidney and describe its clinical, imaging, ...

Solitary-wave solutions of a nonlinearly dispersive equation are considered. It is found that solitary waves are peaked or smooth waves, depending on the wave speed. The stability of the smooth solitary waves also depends on the wave speed. Orbital stability is proved for some wave speeds, while instability is proved for others.

We present investigations into the collision of co-travelling solitary waves in a granular chain. Impulses are injected into the system by means of a piezo stack and the results are compared to a numerical model of discrete masses connected by non-linear springs. Similar to other solitary wave-carrying systems, a phase shift in both interacting solitary waves is observed due to their collision....

Transverse instabilities correspond to a class of perturbations traveling in a direction transverse to the direction of the basic solitary wave. Solitary waves traveling in one space direction generally come in one-parameter families. We embed them in a two-parameter family and deduce a new geometric condition for transverse instability of solitary waves. This condition is universal in the sens...

We consider the stability of ground state solitary waves of the generalized Ostrovsky equation (ut − βuxxx + f(u)x)x = γu, with homogeneous nonlinearities of the form f(u) = ae|u| + ao|u|u. We obtain bounds on the function d whose convexity determines the stability of the solitary waves. These bounds imply that, when 2 ≤ p < 5 and ao < 0, solitary waves are stable for c near c∗ = 2 √ βγ. These ...

The propagation of the solitary wave in a dusty plasma bounded in finite geometry has been investigated. By employing the reductive perturbation method, we obtain a quasi Korteweg-de Vries-type equation. It is noted that the larger the value of viscosity coefficient μ(0), the stronger the damping of the solitary wave. On the other hand, the larger the value of the radius of bounded geometry R, ...

Introduction solitary thyroid nodule is defined as a single discrete mass of abnormal tissue in an otherwise normal thyroid gland. In different studies, thyroid nodules were found in 4-7 percent of American adults. Thyroid nodule is probably one of the commonest endocrine problems in the wold. In a report from the thyroid clinic, IPGMR, Dhaka, 32.67 percent of all thyroid patients had solitary ...

Insect pollination underpins apple production but the extent to which different pollinator guilds supply this service, particularly across different apple varieties, is unknown. Such information is essential if appropriate orchard management practices are to be targeted and proportional to the potential benefits pollinator species may provide. Here we use a novel combination of pollinator effec...