Dust in Supernovae and Supernova Remnants I : Formation Scenarios

Supernovae are considered as prime sources of dust in space. Observations of local supernovae over the past couple of decades have detected the presence of dust in supernova ejecta. The reddening of the high redshift quasars also indicate the presence of large masses of dust in early galaxies. Considering the top heavy IMF in the early galaxies, supernovae are assumed to be the major contributor to these large amounts of dust. However, the composition and morphology of dust grains formed in a supernova ejecta is yet to be understood with clarity. Moreover, the dust masses inferred from observations in mid-infrared and submillimeter wavelength regimes differ by two orders of magnitude or more. Therefore, the mechanism responsible for the synthesis of molecules and dust in such environments plays a crucial role in studying the evolution of cosmic dust in galaxies. This review summarises our current knowledge of dust formation in supernova ejecta and tries to quantify the role of supernovae as dust producers in a galaxy.Peer reviewe

Cytokines in Trauma and Hemorrhage/ Sugerman

178 hal. : ill. ; 25 cm

Cytokines in Trauma and Hemorrhage/ Sugerman

178 hal. : ill. ; 25 cm

Effect of ABSHELL on Headaches and Tinnitus in Pseudotumor Cerebri

Study effects of an externally applied negative abdominal pressure device, ABSHELL, on headaches and pulsatile tinnitus in severely obese women with pseudotumor cerebri (PTC)

Cytokines in Trauma and Hemorrhage/ Sugerman

178 hal. : ill. ; 25 cm

Gastric Surgery for Pseudotumor Cerebri Associated with Severe Obesity

Previous studies suggest that pseudotumor cerebri (PTC) in obese women is secondary to obesity induced increased intra-abdominal pressure (IAP) leading to increased intra-thoracic, cardiac filling and jugular venous pressures. CSF-peritoneal shunts have a high failure rate, probably due to shunting from one high-pressure zone to another high-pressure zone. In an earlier study gastric bypass (GBP) surgery in 8 patients was shown to decrease CSF pressure from 353 - 35 to 168 - 12 mm H2O (p < 0.001) at 34 - 8 months after surgery with resolution of headaches