We update the theoretical predictions for the tt̄ production cross-section at the Tevatron, taking into account the most recent determinations of systematic uncertainties in the extraction of the proton parton densities. CERN-TH/2003-054 March 6, 2003 This work was supported in part by the EU Fourth Framework Programme “Training and Mobility of Researchers”, Network “Quantum Chromodynamics and t...

OBJECTIVE To evaluate the effectiveness of a home-based cognitive rehabilitation (CR) program based on the video game Dr Kawashima's Brain Training (DKBT; Nintendo, Japan), in improving attention, processing speed, and working memory of patients with multiple sclerosis (MS). METHODS This was a randomized, wait-list control study. Patients with MS and failure in at least one between Stroop Tes...

Current problems of epilepsy care in Mongolia consist of shortage of health care personnel, limited diagnostic facilities, insuffi cient supply of the antiepileptic drugs, and diffi culty in access to medical services. There is also lack of epilepsy knowledge among the professionals, patients, families as well as the public. There are many patients with epilepsy caused by preventable head traum...

Abstract Narrow-line Seyfert 1 (NLS1) galaxies are an important type of active galactic nucleus (AGN), generally expected to be accreting at a high Eddington rate. The properties their outflows and importance AGN feedback remain intriguing. We report on the discovery fast outflowing warm absorbers (WAs) in NLS1 PG 1001+054 with velocities range ∼7000–9000 km s −1 . They identified blueshifted L...