A 42-year-old male presented with a history of an enlarging painless swelling on the right side of neck for 15 days. It recurred within three months of partial excision. Immunohistochemistry showed positivity for Smooth Muscle Actin [SMA]. This newly described entity is being reported for its unusual histological features and its differential diagnosis with other spindle cell and vascular lesions of soft tissues.
String cosmology has been investigated in a spatially symmetric Bianchi-IX line element under consideration of flat potential. To illustrate the nonlinear system of field equations an appropriate relation between the metric coefficient and the hybrid expansion law (HEL) for the scalar factor a (t) is considered i.e. a(t) = a
0
t
γ
1
e
γ
2
t
where γ1 and γ2 are the non-negative constants and a
0 denotes current value of a(t). It has been observed that the energy density and particle density diverge initially and become finite for large t. The tension in string clouds tends to infinite when t = 0 and constant value at a large value of t for m>1. The proper volume is also increases with time in exponentially way favorable to inflationary criteria. Expansion and shear infinite large initially and approach to finite value at late time. Some structural aspects of the model and their importance are pointed.
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