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박수일,이득용,이명현,이세종,김배연,Park, Sooil,Lee, Deuk-Yong,Lee, Myung-Hyun,Lee, Se-Jong,Kim, Bae-Yeon 한국세라믹학회 2005 한국세라믹학회지 Vol.42 No.8
$TiO_2$ nanofibers were fabricated by annealing electrospun $TiO_2$/PVP nanofibers for 3 h at $500^{\circ}C$ in air. Size and uniformity of electrospun $TiO_2$ nanofiber diameters were evaluated via XRD and SEM by varying electric field, PVP concentration, Ti tetraisopropoxide concentration and precursor flow rate. Experimental results revealed that the effect of PVP concentration on size and uniformity of electrospun $TiO_2$ nanofiber diameters was most profound, however, the other effects were relatively small. Uniform fibers with no beads were observed for the electrospun anatase titania nanofibers with a diameter of 170 nm.
健康壯丁의 血淸中 Salmonella 凝集素에 關한 硏究
朴秀一,徐仁銖 우석대학교 의과대학 1969 우석의대잡지 Vol.6 No.1
During the period from July 1967 to October 1967 the agglutination tests were performed for the defection of O, H and Vi antibodies reacting to A, B, C₁, C₂ and E₁ group of Salmonella antigens in the sera of 108 healthy soldiers. The strains of Salmonella which were used as diagnostic antigens are as follow; Salmonella paratyphi A: Representing O antigen group A (somatic 1, 2, 12) and flagellar antigen a. Salmonella paratyphi B: Representing O antigen group A (somatic 1, 4, 5, 12) and flagellar antigen b: 1, 2 Salmonella paratyphi C: Representing O antigen group C₁ (somatic 6, 7) and flagellar antigen c: 1, 5 Salmonella virgrnia: Representing O antigen group C₂ (somatic 8). Salmonella typhi: Representing O antigen group d (somatic 9, 12) and flagellar antigen d. Sallnonella London: Representing O antigen group, group E (somatic 3, 10, 26). Vi antigen: Salmonella typhi, Vi 1 strain. The studies were also made to determine the relationship between Vi antibodies and carriers. The resuts are as follows. 1. The agglutinins to Saimonella genus in normal human sera showed high incidence to the considerable extent. Especially O antibodies for Salmonella D, and E₁ group antigens proved high rates and O antibodies for Salmonella C₁group antgens proved lower rates. 2. The rate of Vi agglutinin titer over 1 to 10 was 41.1%. 3. Minimal O titer of 1 to 160 or better and H titer of ① to 640 or better might be regarded as significant for the serological diagnosis of thypoid among soldiers. 4. One out of thirty six individuals having Vi agglutinin S. typhi were isolated from feces.