Keiichi Kodaira

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Steady-state kinetic parameters for the hydrolysis of cellooligosaccharides by almond beta-glucosidase were evaluated at pH 5.0 and 25 degrees C in relation to the subsite theory (K. Hiromi, Biochem. Biophys. Res. Commun., 40, 1-6, 1970). The value of k0/Km decreased monotonously with increasing degree of polymerization (DP) of the substrates (DP = 2-6).(More)
An overview of the current status of the 8.2m Subaru Telescope constructed and operated at Mauna Kea, Hawaii, by the National Astronomical Observatory of Japan is presented. The basic design concept and the verified performance of the telescope system are described. Also given are the status of the instrument package offered to the astronomical community,(More)
Several high-z (z >5.7) quasars have been found during the course of Sloan Digital Sky Survey. The presence of such very high-z quasars is expected to put constraints on early structure formation. On one hand, it is suggested that these most luminous objects at high redshift are biased toward highly magnified objects by gravitational lensing. To clarify the(More)
Let (W, ω) be a smooth projective algebraic variety of dimension 2n over C together with a holomorphic (2, 0)-form of maximal rank 2n. A subvariety X ⊂ W is called weakly lagrangian if dim X ≤ n and if the restriction of ω to X is trivial (notice that X can be singular). An n-dimensional subvariety X ⊂ W with this property is called lagrangian. For example,(More)
We report on early results from very deep and wide-field narrow-band imaging on a 543 arcmin area of the Subaru Deep Field. We find 87 Lyman α emitters (LAEs) at z = 4.86 ± 0.03 which are photometrically selected by a combination of two broad bands (R and i) and one narrow band (NB711; λc = 7126Å, ∆λ = 73Å). We derive the luminosity functions (LFs) of the(More)
Several high-z (z > 5.7) quasars have been found in the course of Sloan Digital Sky Survey. The presence of such very high-z quasars is expected to give constraints on early structure formation. On one hand, it is suggested that these most luminous objects at high redshift are biased toward the highly magnified objects by gravitational lensing. To clarify(More)
X-ray observations of three Shakhbazyan’s Compact Groups of Galaxies, SCGG 202, SCGG 205, and SCGG 223, are presented for the first time. Extended X-ray emission was detected from SCGG 202 and SCGG 223 with 0.5–2 keV luminosity of 1 × 10 erg s and 3 × 10 erg s (for H0 = 75 km s Mpc), respectively, while no significant emission was detected from SCGG 205(More)
Several high-z (z > 5.7) quasars have been found in the course of Sloan Digital Sky Survey. The presence of such very high-z quasars is expected to give constraints on early structure formation. On one hand, it is suggested that these most luminous objects at high redshift are biased toward the highly magnified objects by gravitational lensing. To clarify(More)