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KAMEYA, O.,TSUBOI, M.,ASAKI, Y.,YONEKURA, Y.,MIYAMOTO, Y.,KANEKO, H.,SETA, M.,NAKAI, N.,MIYOSHI, M.,TAKABA, H.,WAKAMATSU, K.,FUKUZAKI, Y.,MORIMITSU, T.,SEKIDO, M. The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2
We have been performing daily VLBI monitoring of the flux density of Sagittarius (Sgr) $A^{\ast}$ at 22 GHz from February 2013 to August 2014 using a sub-array of the Japanese VLBI Network (JVN). The purpose of this monitoring is to explore the flux density variability at daily time resolution for a period longer than one year with the G2 cloud approaching. The flux density of Sgr $A^{\ast}$ is basically stable during the observational period, though there are some small variations. The average and scattering range are consistent with the previously observed values. We have observed no strong flare of Sgr $A^{\ast}$ although it is near the expected peri-center passing.
Funaba, M.,Saita, J.,Nokubo, T.,Kaneko, O.,Kanagawa, Y.,Yano, H.,Kawashima, R. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.2
The effect of dietary protein-energy restriction (PER) on the growth of long bone were examined in sheep during growing period and then following a cycle of reproduction. Three months-old female sheep were offered protein-energy restricted feed for 6 months (growing period), thereafter changed to normal nutritional conditions for 8 months (reproduction period). A half of animals in each group took pregnancy, parturition and lactation. The nutritional restriction reduced the growth in bone diameter more than that in bone length. Compensatory growth resulting from the removal of the nutritional restraint strongly occurred in bone diameter, especially the bone cortical width, as compared to bone longitudinal growth. A cycle of reproduction severely decreased the growth in the bone cortical width relative to that in the bone width, and little effect was found on the growth in bone length and bone mass. The depression of bone development by pregnancy and lactation tended to exhibit severer in animals having received normal nutrition than in those having received PER. Bone mineral density was not affected by the nutritional restriction. A cycle of reproduction had an adverse effect on the mineral density between in animals having received normal nutrition and in those having received PER.
Characteristics of Beam Attenuation in the High Temperature Plasma with High-Z Discharge in LHD
katsunori Ikeda,K. Tsumori,K. Nagaoka,M. Osakabe,O. Kaneko,S. Morita,Y. Oka,Y. Takeiri 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
Behavior in attenuation of a high-energy neutral beam has been investigated by visible spectroscopy in the Large Helical Device (LHD). The measurement system consists of optical fibers, a spectrometer and an ICCD detector. A spectrum of beam emission is clearly observed by the Doppler effect. In order to increase the ion-heating power, we have adopted a high-Z discharge with argon gas. An ion temperature of 13.5 keV ± 2 keV is achieved by the injection of a neutral beam power of 10.5 MW. We have observed the behavior of the neutral beam emission in the high-temperature plasma. The intensity of the beam emission in the argon discharge is lower than that in the hydrogen discharge when the ion temperature increases. After the maximum ion temperature, the intensity of the beam emission increases as the electron density increases. This behavior is similar to the hydrogen discharge. It is indicated that the particle configuration of the plasma has changed. This result will contribute to the monitoring of the neutral beam absorption in fusion plasma.