HYPOTHESES Goiter is a surgically reversible cause of positional dyspnea (PD). Substernal tracheal compression (TC) predicts PD relief after thyroidectomy (Tx). DESIGN Retrospective analysis of a prospective structured management algorithm. SETTING Endocrine surgery academic center. METHODS Before Tx, 1081 patients were queried about PD. Those patients with substernal goiter underwent com...

The rate of predation by stage IV instar Toxorhynchites splendens larvae on the equivalent instar stage larvae of Culex quinquefasciatus and Armigeres subalbatus, co-occurring in sewage drains, were noted for a period of three consecutive days in the laboratory using different prey densities and combinations. The rate of predation varied by age of the predator, density of prey, and prey type. T...

Sphingolipids are thought to stabilize glycosylphosphatidylinositol (GPI)-anchored protein-rich membrane domains of yeast and polarized higher animal cells during the processing and targeting of these proteins to the plasma membrane. A widely used criterion for identifying the stable sphingolipid- and GPI-anchored protein-enriched membrane domains is the resistance of these lipid-modified prote...

Mobile network operators demand small base station antennas and high physical layer throughputs. In the downlink, high physical layer throughputs can be achieved by exploiting transmit diversity. Given that the correlation between different propagation paths reduces the achievable throughput, it is commonly conjectured that the greater the transmit antenna spacing, the better the radio link per...

A D-band (110-170 GHz) ultra high data rate link is presented and characterized. The circuits are realized in a commercial 130 nm silicon germanium (SiGe) BiCMOS process. 3-dB bandwidth for both transmitter (Tx) receiver (Rx) between 125 -165 GHz, resulting 40 GHz bandwidth. communication has demonstrated transmissions up to 102 Gbps using 8-phase shift keying (PSK) modulation over one meter lo...

Ischemic injury is characterized by neutrophil (PMN)--endothelial cell adhesion and diapedesis associated with thromboxane (TX) generation. Neutrophil-endothelial cell interaction is regulated in part by the leukocyte adhesion receptor CD 18 glycoprotein complex and the endothelial intercellular adhesion molecule-1 (ICAM-1). This study tests the role of TX in ischemia-induced diapedesis and eva...

The present study describes surgical resection in 23 patients under maintenance hemodialysis with hyperparathyroidism. Twenty-three patients under maintenance hemodialysis had subtotal parathyroidectomy (s-PTx, n = 12) or parathyroid gland transplantation combined with total parathyroidectomy (Tx, n = 11) performed from January 1979 to January 1991. Their ages ranged from 8 to 63 years. The PTH...