Polisomnography (PSG) is the standard technique used to study the sleep dynamic and to identify sleep disorders. In order to obtain an integrated knowledge of different corporal functions during sleep, a PSG study must perform the acquisition of several biological signals during one or more nights in a sleep laboratory. The signals usually acquired in a PSG study include the electroencephalogra...

A specific, hitherto unpublished mechanism of escape-capture bigeminy based on rate dependent (phase 3) block of atrioventricular conduction is described. Escape-capture bigeminy is a bigeminal rhythm in which each escape beat is followed by a conducted beat. Bradley and Marriott (1958) were the first to describe this interesting electrocardiographic pattern in a case of sinoatrial block. Scham...

The effort to vaccinate the US population against the 2009 H1N1 influenza virus hinged, in part, on public confidence in vaccine safety. Early in the vaccine program, 20% of parents reported that they would not vaccinate their children. Concerns about the safety of the vaccines were reported by many parents as a factor that contributed to their intention to forgo vaccination (see www.hsph.harva...

in order to study the biological fixation efficiency of different strains of symbiosis bacteria in three varieties of common bean (phaseolus vulgaris l.) a factorial experiment based on randomized complete block design was conducted in zanjan province during 2006 and 2007. in this investigation three strains of rizobium including: rb117 (extracted from the zanjan soils), rb123 (extracted from t...

We present a computational model of usage-based learning of verb argument structure in young children. The model integrates Bayesian classification and prediction to learn from utterances paired with appropriate semantic representations. The model balances item-based and class-based knowledge in language use, demonstrating appropriate word order generalizations, and recovery from overgeneraliza...

9. REFERENCES ACGIH. 1986. Documentation of the threshold limit valves and biological exposure indices. 5th ed. Cincinnati, OH: American Conference of Governmental Industrial Hygienists, 296. ACGIH. 2004. Threshold limit values for chemical substances and physical agents and biological exposure indices. Cincinnati, OH: American Conference of Governmental Industrial Hygienists. Adeshina F, Todd ...

Objectives: The aim of our study was to compare the effects of intravenous ferrous sucrose versus oral ferrous sulphate on postpartum iron deficiency anaemia. Material and methods: This prospective randomized study was conducted in Obstetrics and Gynaecology Department of Alkhidmat Teaching Hospital Mansoorah Lahore and in the Obstetrics and Gynaecology Department of Akhtar Saeed Trust Hospital...

Children begin to comprehend words at 9 months. They say their first word at around 12 months. The pace with which children add new words to receptive and productive vocabulary then accelerates such that by 24 to 30 months, children add words at the staggering rate of 5 to 9 new words a day (Bloom, 2000). Just as in many other cognitive learning tasks, a critical problem in word learning is the...

Three-dimensional numerical simulations are used to investigate the hydrodynamic performance and the wake patterns of a sunfish in steady swimming. Immersed boundary method for deformable attaching bodies (IBM-DAB) are used to handle complex moving boundaries of one solid body (fish body) attached with several membranes (fins). The effects of the vortices shed from both the dorsal and anal fins...