نتایج جستجو برای: sequestrated disc fragment
تعداد نتایج: 107278 فیلتر نتایج به سال:
ABSTRACT In the general classical picture of pebble-based core growth, planetary cores grow by accretion single pebble species. The growing planet may reach so-called isolation mass, at which it induces a pressure bump that blocks inward drifting pebbles exterior to its orbit, thereby stalling growth accretion. recent hydrodynamic simulations, filtration depends on several parameters including ...
Posterior lumbar vertebral apophyseal ring fractures are described in three adolescents presenting with severe low back pain, spinal tenderness and lower limb neurological deficit. Magnetic resonance imaging showed severe L4/5 posterior disc protrusion in all three patients. The actual fracture fragment was visualized with difficulty on MRI alone. The diagnosis of apophyseal ring fracture was m...
We investigate numerically and semi-analytically the collapse of low-mass, rotating prestellar cores. Initially, the cores are in approximate equilibrium with low rotation (the initial ratio of thermal to gravitational energy is α0 ≃ 0.5, and the initial ratio of rotational to gravitational energy is β0 = 0.02 to 0.05). They are then subjected to a steady increase in external pressure. Fragment...
BACKGROUND The relationship between intervertebral disc degeneration and chronic infection by Propionibacterium acnes is controversial with contradictory evidence available in the literature. Previous studies investigating these relationships were under-powered and fraught with methodical differences; moreover, they have not taken into consideration P. acnes' ability to form biofilms or attempt...
The promoters of Drosophila genes encoding DNA replication-related proteins contain transcription regulatory elements consisting of an 8-bp palindromic DNA replication-related element (DRE) sequence (5'-TATCGATA). The specific DRE-binding factor (DREF), a homodimer of the polypeptide with 709 amino acid residues, is a positive trans-acting factor for transcription of DRE-containing genes. Both ...
The majority of simple fractures of the radial head are stable, even when displaced 2 mm. Articular fragmentation and comminution can be seen in stable fracture patterns and are not absolute indications for operative treatment. Preservation and/or restoration of radiocapitellar contact is critical to coronal plane and longitudinal stability of the elbow and forearm. Partial and complete articul...
in view of potential biological activities of small molecule polyamides, we synthesized some novel n-(2-aminoethyl)-1-benzyl-2- (alkylthio)-1h-imidazole-5-carboxamide (7a,b), and n-(2-(1-benzyl-2-(alkylthio) -1h-imidazole- 5-carboxamido) ethyl)-1-benzyl-2- (alkylthio)-1h-imidazole-5-carboxamides (8a,b) as antitumor agents. the antitumor activity of compounds 7a,b and 8a,b was studied at concent...
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