منابع مشابه
Bright solitary waves in malignant gliomas.
We put forward a nonlinear wave model describing the fundamental dynamical features of an aggressive type of brain tumors. Our model accounts for the invasion of normal tissue by a proliferating and propagating rim of active glioma cancer cells in the tumor boundary and the subsequent formation of a necrotic core. By resorting to numerical simulations, phase space analysis, and exact solutions ...
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Symmetry-breaking instability of solitons has been studied in different areas of physics and appears as a common feature shared by most solitons despite the diversity of the physical systems that support them [1–3]. In optics, the break-up of self guided light beams through transverse and/or modulational instability has been demonstrated for solitons in self-focussing and defocusing Kerr media ...
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Motivated by recent experimental observations, we study theoretically multiple bright solitary waves of trapped BoseEinstein condensates. Through variational and numerical analyses, we determine the threshold for collapse of these states. Under π-phase differences between adjacent waves, we show that the experimental states lie consistently at the threshold for collapse, where the corresponding...
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The present retrospective study was designed to analyze factors with prognostic values a) within, and b) significantly associated with, short-term (12months or less) and long-term (more than 24 months) survival times, i n 72 consecutive patients treated for malignant gliomas. Among 41 (57%) short-term surviving patients, the absence of both aphasia and motor deficit (as initial presenting ...
متن کاملMalignant gliomas in adults.
Copyright © 2008 Massachusetts Medical Society. Malignant gliomas account for approximately 70% of the 22,500 new cases of malignant primary brain tumors that are diagnosed in adults in the United States each year.1-3 Although relatively uncommon, malignant gliomas are associated with disproportionately high morbidity and mortality. Despite optimal treatment, the median survival is only 12 to 1...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2011
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.84.021921