منابع مشابه
Compression and crevasses in vitreous sections under different cutting conditions.
Compression and crevasses are common cutting artefacts in cryo-ultramicrotomy of vitreous sections. They can be reduced or suppressed under optimal cutting conditions. In the present study, compression and thickness were measured for different cutting speeds and knife angles. It was found that compression decreased with feed and that crevasses appeared only above a certain thickness. The optima...
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Melanoma is among the most prevalent neoplasms diagnosed annually with the vast majority arising from a cutaneous origin. Though there are described metastases to the gastrointestinal tract, there are only rare descriptions of primary gastrointestinal melanoma. Both diagnosis and management of this unique population can be challenging given the infrequency with which it occurs. To follow is the...
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The neurological manifestations of antiphospholipid syndrome (APS) are diverse. Transverse myelitis (TM) is an uncommon, but well-known neurological complication of systemic lupus erythematosus (SLE). On the other hand, the reported cases associated with primary APS are extremely rare. To our knowledge, this is the first report of TM in a patient with primary APS in Korea. A 32-year-old male pa...
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Liposarcomas are common tumors arising in the retroperitoneum. However, a primary mesenteric liposarcoma is a rare entity and less than 50 cases have been reported so far. Further, a liposarcoma arising in the transverse mesocolon is very unusual, and cases of multiple primary tumors arising from the transverse mesocolon are extremely rare. We want to report a case of a multiple primary mesente...
متن کاملCrevasse patterns and the strain-rate tensor: a high-resolution comparison
Values of the strain-rate tensor r epresented at a 20 m length sca le a re found to explain the pattern and orientation of crevasses in a 0.13 km 2 reach of Worthington Glacier, Alaska, U.S.A. The flow fi eld of the reach is constructed from surveyed displacements of 110 markers spaced 2030 m apart. A velocity gradient m ethod is then used to calcul ate values of the principal strain-rate axes ...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1969
ISSN: 0022-1430,1727-5652
DOI: 10.1017/s0022143000020797