Learn More
We investigated the relationship of ventilation rates with the performance of advice nurses working in a call center. Ventilation rates were manipulated; temperatures, humidities, and CO 2 concentrations were monitored; and worker performance data, with 30-minute resolution, were collected. Multivariate linear regression was used to investigate the(More)
BACKGROUND The aim of this study was to investigate associations of 3 common polymorphisms in the VEGF gene, -2578C>A, -634C>G, and 936C>T, with risk of tetralogy of Fallot (TOF) in Chinese Han children. MATERIAL AND METHODS From January 2010 to June 2013, a total of 400 pediatric subjects were recruited, including 160 cases with TOF (TOF group) and 240(More)
UNLABELLED We investigated the relationship between ventilation rates and individual work performance in a call center, and controlled for other factors of the indoor environment. We randomized the position of the outdoor air control dampers, and measured ventilation rate, differential (indoor minus outdoor) carbon dioxide (DeltaCO(2)) concentration, supply(More)
We investigated the relationship of ventilation rates with the performance of advice nurses working in a call center. Ventilation rates were manipulated, temperatures, humidities, and CO 2 concentrations were monitored, and worker performance data, with 30-minute resolution, were collected. Multivariate linear regressions were employed to investigate the(More)
AIM To establish a RP-HPLC method for determination of cyclovirobuxine D. METHODS Cyclovirobuxine D reacted with a derivative reagent 1-naphthyl isocyanate in chloroform to form fluorescence derivatives, stopped the reaction by adding the mobile phase and then directly injected the solution into the chromatograph to seperate it by RP-HPLC. The analysis(More)
  • 1