A new disc-shaped highly symmetric C54H20 nanographene fragment, tetrabenzocircumpyrene, has been synthesized and characterized by scanning tunnelling microscopy, demonstrating the potential of this technique for identifying highly insoluble graphenic molecules.

Two hundred fifty-five solitary and 42 multiple cases of fibro-osseous lesions of the jaws, and 74 cases of sclerosing osteomyelitis were studied clinico-pathologically, in order to discuss the entity of peculiar cemental lesion with sequester-like appearance, which occurs mainly in the mandibular molar area of over middle-aged females. Four allied lesions, including the sequester-like cemental...

The clinical effectiveness of percutaneous and transforaminal endoscopic discectomy procedures has been evaluated by the system used or compared to open laminectomy or micro-discectomy but are not evaluated based on the location and characteristics of the abnormal disc. This review proposes that outcomes are primarily related to disc size, biomechanics, location, and associated segmental fibrot...

Definitions are based on anatomy and pathology. Definitions are not based on and do not imply specific etiologies (ie trauma), symptoms, or a need for a specific treatment. Normal-Free of disease, traumatic changes, or age associated changes Congenital / Developmental Variants-such as disc changes due to scoliosis or spondylolisthesis Degenerative & Traumatic Anular tear (synonymous with anular...

Context. Gravitational fragmentation has been proposed as a mechanism for the formation of giant planets in close orbits around solar-type stars. However, it is debatable whether this mechanism can function in the inner regions (R <∼ 40 AU) of real discs. Aims. We investigate the thermodynamics of the inner regions of discs and their propensity to fragment. Methods. We use a newly developed met...

When a fragment of a Drosophila imaginal disc is cultured in growth permissive conditions, it either regenerates the missing structures or duplicates the pattern present in the fragment. This kind of pattern regulation is known to be epimorphic, i.e. the new pattern is generated by proliferation in a specialized tissue called the blastema. Pattern regulation is accompanied by the healing of the...

Context. Gravitational fragmentation has been proposed as a mechanism for the formation of giant planets in close orbits around solar-type stars. However, it is debatable whether this mechanism can function in the inner regions (R < ∼ 40 AU) of real discs. Aims. We investigate the thermodynamics of the inner regions of discs and their propensity to fragment. Methods. We use a newly developed me...

AIM Posterior epidural migration of a sequestered lumbar intervertebral disc fragment (PEMSLIDF) is an extremely rare condition published so far only as case reports or small case series (ranging between 2 to 8 cases). Diagnosing this condition is often challenging and the diagnosis is usually made intraoperatively. The affected patients usually suffer cauda equina syndrome (CES). In the presen...

thorax possibly because of two large cysts getting infected. The anomaly is often present in men on the left side (Claman & Ehrenheft, 1960; Rubin et al., 1966) as in this patient. The aberrant vessel supplied only the sequestrated mass. Pryce (1946) reported that this vessel may supply only the sequestrated segment, the normally connected lung or this segment along with adjoining area of norma...