Persistence and photochemical decay of springtime total ozone anomalies in the Canadian Middle Atmosphere Model S. Tegtmeier and T. G. Shepherd Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany Department of Physics, University of Toronto, Toronto, Ontario, Canada Received: 19 January 2006 – Accepted: 10 February 2006 – Published: 28 April 2006 Correspondence to: S. Tegtm...

Recently there has been an increasing demand for applications like multiplayer online gaming, where players residing in different parts of the world participate in the same gaming session through the Internet. Multicasting could prove to be an efficient way of providing necessary services for these applications. Furthermore, with increasing popularity of handheld devices and mobile equipment, i...

Speakers often repeat syntactic structures that have recently been used by them or their interlocutors. Such syntactic persistence has variously been attributed to social causes (mimicking to be well-liked), to an effort to reduce processing costs, or as a side effect of either transient activation of previously processed structure or implicit learning. We present new evidence from syntactic pe...

Paraplegic subjects (N = 34) were examined to determine the association of pressure sore history with respect to ankle pressure ratio and buttocks cutaneous plethysmographic harmonic persistence. No relationship was found between pressure sore history and ankle pressure ratio. No significant difference in ankle pressure ratios exists for those who have a pressure sore history as compared to tho...

Induction of fetal hemoglobin (Hb F) is an important therapeutic tool in ameliorating complications of sickle cell disease. Nitric oxide has been implicated in the mechanism of Hb F synthesis induced by hydroxyurea (HU). This study examined whether zileuton (ZL), a structural analog of hydroxyurea, possessed Hb F-inducing properties and the potential role nitric oxide plays. ZL caused a dose-de...

BACKGROUND: Patients with end-stage renal disease (ESRD) undergoing hemodialysis (HD) are apparently exposed to enhanced oxidative stress and to inflammation. It was the aim of this study to characterize the state of systemic oxidative stress of ESRD patients before and following HD using highly specific biomarkers, F(2)-isoprostanes and 4-hydroxynonenal (HNE). Furthermore the question should b...

A 5-yr-old girl with hemoglobin E-$ thalassemia was discovered in a family of mixed origin. The father is Iranian (6-thalassemia trait) and the mother is Burmese (hemoglobin-E trait). Hemoglobin synthesis was studied in vitro in the blood of the proposita and family members. In the subjects with hemoglobin E trait the ratio of the quantity of hemoglobin A to hemoglobin E was 3:1. However. the A...

Previous studies suggested that y87 Gln in hemoglobin (Hb) F is an important site for promoting inhibition of Hb S (cy#: polymerization by H b F. We engineered and isolated the double mutant ) using a yeast expression system and characterized polymerization properties of this modified tetramer in an effort to clarify the role of Gln at position 87 in inhibiting H b S polymerization. Electrop...

Suntaree Apibal, Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Bangkok 10400 (Thailand) The presence of fetal red cells (F cells) in the maternal circulation is an indicator of a fetomaternal hemorrhage which may subsequently lead to hemo-lytic disease of the newborn [1]. However, a small amount of F cells were found in some normal adults [4] whereas the increase in hemogl...

BACKGROUND Livestock that consume locoweed exhibit multiple neurological symptoms, including dispirited behavior, staggered gait, trembling, ataxia, impaired reproductive function and cellular vacuolar degeneration of multiple tissues due to toxicity from plant-derived alkaloids such as swainsonine. RESULTS Swainsonine was administered to F(0) and F(1) mice by intraperitoneal injection before...