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Article
Non-perturbative renormalization of quark mass in N f = 2 + 1 QCD with the Schrödinger functional scheme
We present an evaluation of the quark mass renormalization factor for N f = 2 + 1 QCD. The Schrödinger functional scheme is employed as the intermediate...
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Article
Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
Discretisation errors in two-flavour lattice QCD with Wilson quarks and DBW2 gauge action are investigated by comparing numerical simulation data at two values of the bare gauge coupling. Both non-zero- and z...
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Article
The phase structure of lattice QCD with two flavors of Wilson quarks and renormalization group improved gluons
The effect of changing the lattice action for the gluon field on the recently observed [F. Farchioni, R. Frezzotti, K. Jansen, I. Montvay, G.C. Rossi, E. Scholz, A. Shindler, N. Ukita, C. Urbach, I. Wetzorke, ...
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Article
Twisted mass quarks and the phase structure of lattice QCD
The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable in correspondence of which the untwisted quark mass assumes positive...
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Chapter and Conference Paper
Exploration of Southern Sky with Atacama Submillimeter Telescope Experiment (ASTE)
The Atacama Submillimeter Telescope Experiment (ASTE) is a joint project between Japan and Chile to install and operate a 10 m high precision telescope for exploration of the Southern sky at submillimeter wave...
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Chapter and Conference Paper
Effects of Lecithinized SOD on Sequential Change in SOD Activity after Cerebral Contusion in Rats
To analyze the effect of lecithinized superoxide dismutase (SOD) on superoxide accumulation after traumatic brain injury (TBI) in rats, we studied the SOD activity by NBT-reducing method and the expression of ...
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Chapter
Results of the SiO Maser Survey of the Galactic Bulge IRAS Sources
Evidence for the bar structure in our Galaxy has been shown by Blitz and Spergel (1991b) based on the near-infrared maps of the bulge, by Nakada et al. (1991) based on IRAS point source catalogue, and more cle...
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Article
Aperture synthesis observations of HCN J=1-0 emission from Y canum venaticorum
We have made high resolution observations of HCN (1-0) emission from the carbon star Y Canum Venaticorum using the Nobeyama Millimeter Array. We find that the emission region is not well resolved by the synthe...
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Chapter and Conference Paper
Aperture Synthesis Observations of HCN J=1-0 Emission from Y Canum Venaticorum
We have made high resolution observations of HCN (1–0) emission from the carbon star Y Canum Venaticorum using the Nobeyama Millimeter Array. We find that the emission region is not well resolved by the synthe...
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Chapter
Dense Molecular Clouds in the Galactic Center Region
We have observed the dense molecular clouds in a 150′ x40′ (1xb) region around the Galactic center with CS J=1-0 using the 45-m telescope at Nobeyama Radio Observatory. Total mass of the clouds is M(H ...
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Chapter and Conference Paper
SIO Maser Survey of the Bulge IRAS Sources
SiO maser emission from the Bulge IRAS sources has been searched by the v=l, J=l-0 and v=2, J=l-0 transitions to investigate the kinematics of the Galactic Bulge, resulting in a sample of 124 line-of-sight vel...
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Article
Molecular and low excitation emission in high mass post-main-sequence nebulae
We have undertaken map** and spectroscopy of a broad range of type I post-Main-Sequence nebulae in COJ=1→0,J=2→1, andJ=3→2, using the 12 m antenna at Kitt Peak, and the 45 m facility of the Nobeyama Radio Obser...
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Chapter and Conference Paper
The Peculiar Planetary Nebula M1-78
The question of whether Ml-78 is a PN or a compact H II region is discussed. We have obtained new high resolution radio continuum maps, optical spectra and CO maps. Arguments for it being a PN include spectral...
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Chapter and Conference Paper
Observations of CO and HCN (J = 1-0) in NGC 2346 and NGC 7293 with the Nobeyama 45-m Telescope
Many positions in the planetary nebulae NGC 2346 and NGC 7293 have been searched for CO (J = 1-0) and HCN (J = 1-0) emission. The beam was 15 arcsec at 115 GHz.
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Chapter and Conference Paper
Molecular Clouds in the Central 100-pc of the Galactic Center
We have observed CS(J=1–0/2–1) lines in a 60’×30’(1×b) area of the Galactic center region. There are two large-scale features with elliptical shape in the position-velocity maps, which suggest shell-like struc...
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Chapter and Conference Paper
Distribution of the H2O Masers in the Sagittarius B2 Core
The distribution of H2O masers in the Sgr B2 core was observed with a 2.5′×2.5′ wide field and with 540 km s-1 total velocity coverage by the Nobeyama Millimeter Array. Thirty-nine resolved maser spots were detec...
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Chapter and Conference Paper
A CO search for molecular gas in high mass post-main-sequence nebulae
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Chapter and Conference Paper
Discovery of a reflection dust envelope around IRC+10216
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Chapter and Conference Paper
A sensitive line search in circumstellar envelopes
A molecular line search in the range between 85 and 89 GHz has been performed in the circumstellar envelopes of 11 evolved stars. Emissions of 29SiO J=2-1,28SiO J=2-1, HCN J=1-0, H13CN J=1-0, HC5 N J=33-32, HCO+ ...
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Chapter and Conference Paper
SiO isotope emissions from late-type stars
The J=2-1, v=0 emissions of 28Si0,29Si0, and 30Si0 from three late-type stars were simultaneously observed with the Nobeyama 45-m telescope in January 1987. The relative intensities of (29Si0 ) / (30Si0 ) were me...
