When solving certain evolution type PDE such as the Schrödinger equation, the Interaction Picture method is a valuable alternative to Split-Step methods. The Interaction Picture method has good computational features when used together with the standard 4th order Runge-Kutta scheme (giving rise to the RK4-IP method). In this paper we present an embedded Runge-Kutta scheme with orders 3 and 4wit...

100 cases of extradural spinal compression comprising 74% of all cases of spinal  compression were included. ver-tebral and extravertebral compression occurred with  equal frequency.  1. most of tjhe cases occurred between 20-50 years of age, with no significant dif'fe'rerlce1s between various causes, except in vertebral hemangioma which tend o affect the younger age groups (10-20). males were ...

conclusions primary extracranial meningiomas (pems) without intracranial origin are very rare and because of their slow growing nature are initially managed by primary care physicians. case presentation we report a case of slowly progressing extracranial meningioma that was presented in a young adult woman. the tumor was asymptomatic but large enough to cause cosmetic discomfort. patient underw...

abstract objective: this study aimed to present a descriptive analysis of the responses given by two-and-a-half year-old farsi-speaking children to the “persian picture naming test” carried out on a statistically significant sample of subjects. materials and methods: 60 two-and-a-half-year-old children were chosen from 32 kindergartens through multiple cluster sampling method and then evaluated...

Single layers of MoS2 and MoSe2 were optically pumped with circularly polarized light and an appreciable polarization was initialized as the pump energy was varied. The circular polarization of the emitted photoluminescence was monitored as a function of the difference between the excitation energy and the A-exciton emission at the K-point of the Brillouin zone. Our results show a threshold of ...

Ganglioneuromas are rare tumors, known as neuroblastic or neurogenic tumors, which most often start in autonomic nerve cells, which may be found in any part of the body. We present a case of 53 years old, woman, with mild arterial hypertension, who has right sided hemiparesis, more on the leg, with gradual onset. Cerebral MRI was normal. After a few months, she developed motor deficit on the op...