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OBJECTIVE AND IMPORTANCE Juxtafacet cysts of the lumbar spine are a recognized cause of back pain, radicular symptoms, neurogenic claudication, and, less often, cauda equina compression syndrome. Hemorrhagic rupture of a juxtafacet cyst and the resulting epidural hematoma may cause chronic and/or acute cauda equina compression. CLINICAL PRESENTATION We(More)
The authors present a case of delayed myelopathy arising 8 years after a stab wound to the thoracic spine, with intradural retention of the knife tip. Following removal of the knife tip, the patient had a good recovery. A review of the literature documents eight additional cases of delayed myelopathy secondary to retained fragments from spinal stab wounds.
Surface recordings made at the wrist during moderate vibrotactile stimulation of a digit display rhythmic activity at the frequency of the driving stimulus. This activity is abolished by local anesthesia of the stimulated digit and by substitution of the corresponding digit of the opposite hand with the recording geometry and the load on the stimulator(More)
Among living mammals, bats (Chiroptera) are second only to rodents in total number of species with over 1100 currently known. Extant bat species occupy many trophic niches and feeding habits, including frugivores (fruit eaters), insectivores (insect eaters), nectarivores (nectar and pollen-eaters), carnivores (predators of small terrestrial vertebrates),(More)
feeding ecology of spinner dolphins (Stenella longirostris) and Fraser's dolphins (Lagenodelphis hosei) in the Sulu Sea. The effect of age and sex selective harvest patterns for baleen whales. 2003. Inshore-offshore movements of two fin whales (Balaenoptera physalus) tracked by satellite off West Greenland.
The control of Beam-Beam Interactions (BBI) in particle colliders is fundamental to preserve beam stability and to achieve the collider maximal luminosity. The Large Hadron Collider (LHC) under construction at CERN has high intensity beams composed of 5616 particle bunches, each containing 10 11 protons. This represents a considerable computational(More)
The LHC [1] will be supplied, via the SPS, with protons from the pre-injector chain comprising Linac2, PS Booster (PSB) and PS. These accelerators have undergone a major upgrading programme [2] during the last five years so as to meet the stringent requirements of the LHC. These imply that many high-intensity bunches of small emittance and tight spacing (25(More)
Two cases of intracranial hemorrhage following staged flow reduction procedures for large arteriovenous malformations are presented. Possible causes of bleeding in these cases are discussed. We suggest that the staged removal of large arteriovenous malformations may not prevent hemorrhagic complications in certain cases.
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