I investigated a Bose–Einstein condensate confined harmonically to 1D, within the framework of Gross–Pitaevskii mean–field theory. I consider the 1D Gross–Pitaevskii equation with a combined step in its external potential and nonlinear terms. I generalise solitary wave solutions to the equation in its nonlinear limit, to take into account a constant potential and nonlinearity. I then generalise...

This paper addresses the phenomenon of 'solitary drinking', considering whether Anglo, African American and Mexican American male regular drinkers differ in the propensity to drink in solitary contexts and whether such differences may help to explain observed ethnic variation in patterns of heavy drinking. Further, the paper considers whether apparent relationships between solitary drinking and...

We present a method to prove nonlinear instability of solitary waves in dispersive models. Two examples are analyzed: we prove the nonlinear long time instability of the KdV solitary wave (with respect to periodic transverse perturbations) under a KP-I flow and the transverse nonlinear instability of solitary waves for the cubic nonlinear Schrödinger equation.

Background : Solitary fibrous tumours rare spindle cell neoplasms, initially regarded as occurring exclusively within the thoracic cavity with a pleural origin. We report an unusual and case, of solitary tumor skin. Whose evolution has been marked by several recurrences after surgical excision Case Report: 49 year old man, dorsolumbar cutaneous tumor.

1. The mechanism by which the area postrema augments central sympathetic drive during electrical stimulation is presently unknown. This pathway may involve either direct facilitation of brain-stem vasomotor neurons or inhibition of the sympatho-inhibitory baroreceptor relay in the nucleus tractus solitarii. 2. The present study employed selective lesions within the solitary tract nucleus to ass...

Internal solitary waves are hump-shaped, large-amplitude waves that are physically analogous to surface waves except that they propagate within the fluid, along density steps that typically characterize the layered vertical structure of lakes, oceans and the atmosphere. As do surface waves, internal solitary waves may overturn and break, and the process is thought to provide a globally signific...

Bone scintigraphy is widely used to detect bone metastasis owing to its high sensitivity, but solitary focus of increased uptake often causes diagnostic problem because of its low specificity. The purpose of this study was to assess the significance of solitary hot spot detected in patients with extraskeletal malignancies. We reviewed 1,167 consecutive bone scintigraphies of patients with histo...

Laboratory experiments and field observations suggest that the degeneration of basin-scale internal standing waves into packets of solitary waves is an important mechanism for the transfer of energy within the internal wavefield in lakes. Since these shorter solitary waves break at the boundaries, this process provides a flux path from the wind to the turbulent benthic boundary layer. However, ...

Solitary fibrous tumor is a rare, benign spindle cell neoplasm that was first described in the thoracic pleura. This tumor is now known to occur at many extrapleural sites. There are established criteria for the diagnosis of malignant solitary fibrous tumor including ≥4 mitotic figures per 10 high-power fields, increased cellularity, cytologic atypia, infiltrative margins, and/or necrosis. Alth...

Solitary fibrous tumor is an extremely rare clinical entity, most commonly manifested in the pleura and peritoneum. An increasing number of cases are found to occur at extrapleural sites. We report a case of solitary fibrous tumor arising from the mesentery of the small intestine. A 53-year-old man presented with a large abdominal mass which was initially thought to be a gastrointestinal stroma...