Diagnostic value of the rapid influenza antigen test for novel influenza A (H1N1).

Department of Family Medicine, College of Medicine, Hanyang University, Seoul, South Korea.
Scandinavian Journal of Infectious Diseases (Impact Factor: 1.64). 01/2011; 43(1):43-6. DOI: 10.3109/00365548.2010.508463
Source: PubMed

ABSTRACT We administered both the rapid antigen test and real-time reverse transcriptase polymerase chain reaction (RT-PCR) test to 2154 patients in order to assess the diagnostic value of the rapid antigen test during Korean pandemics of H1N1 2009. The overall sensitivity was 70.0%, specificity was 97.5%, positive predictive value was 97.4%, and negative predictive value was 71.2%. The sensitivity fell and the negative predictive value decreased as the RT-PCR positive rate increased.

  • [Show abstract] [Hide abstract]
    ABSTRACT: Molten salt processes have been developed in various fields of engineering. In such a process, its efficiency and the quality of products would be enhanced when the used molten salt is effectively separated from the product and recycled into the process. Vacuum evaporation has been applied to recover molten salts due to the low vapor pressure and the high melting point. However, most of researches have been focused on the bulk salts evaporation. In this work, LiCl salt evaporation behavior from a porous solid was investigated to develop a post-treatment process of an electrolytic reduction process which uses LiCl as an electrolyte and produces porous solid products. The electrolytic reduction process is one of the main components of pyroprocessing to treat spent nuclear fuel and produce metallic uranium. Instead of using radioactive material, we prepared porous MgO chips and rods to determine the conditions and measure the behavior with different physical characteristics of the rods. The temperature and pressure were set to 700 oC and 20 mTorr, respectively, and more than 70% of salt was removed within 5 h.
    Vacuum 11/2014; 109:61–67. DOI:10.1016/j.vacuum.2014.06.011 · 1.43 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A liquid Sb anode was investigated in this study to evaluate its ability to promote the electrolytic reduction of UO2. The liquid Sb anode consumed O2− ions to convert UO2 into metallic U during electrolytic reduction in an LiCl–Li2O electrolyte at 650 °C. However, simultaneous electroplating of Sb at the cathode prohibited the complete conversion, leaving residual UO2.
    Journal of Radioanalytical and Nuclear Chemistry 01/2015; 303(1). DOI:10.1007/s10967-014-3621-0 · 1.42 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The metal product from the electrolytic reduction of oxide spent fuel in LiCl-Li2O molten salt retains about 20 wt% of the residual salts, which contain some salt-soluble fission products such as Cs, Sr, and Ba. To separate the residual salt from the metal product of the electrolytic reduction, the evaporation behaviors of the LiCl and salt-soluble chlorides were investigated using the vacuum distillation equipment. The evaporation rate of the LiCl molten salt was considerably decreased by the addition of BaCl2, SrCl2, and Li2O. For LiCl and CsCl, the complete removal of the salts from the evaporator was accomplished by reducing the pressure to less than 100 mTorr and heating to 900 A degrees C. However, for BaCl2 and SrCl2, only about 30 % were vaporized at 900 A degrees C. BaCl2 and SrCl2 were not vaporized by their own single component, but could be vaporized through a co-vaporization with LiCl salt. Evaporation efficiencies of 100 % were achieved by heating above 1,000 A degrees C.
    Journal of Radioanalytical and Nuclear Chemistry 01/2014; 303(1):223-227. DOI:10.1007/s10967-014-3330-8 · 1.42 Impact Factor