Song, G. S., Kobayashi, M., Hwang, J. I., Kataoka, T., Takizawa, M., Fujimori, A., ...
The electronic structure of the magnetic semiconductor Ga$_{1-x}$Cr$_{x}$N and the effect of Si doping on it have been investigated by photoemission and soft x-ray absorption spectroscopy. We have...
Abundances of lithium, sodium, and potassium in Vega (2008)
Vega's photospheric abundances of Li, Na, and K were determined by using considerably weak lines measured on the very high-S/N spectrum, while the non-LTE correction and the gravity-darkening...
Kobayashi, M., Ishida, Y., Hwang, J. I., Song, G. S., Fujimori, A., ...
The electronic structure of the Cr ions in the diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te ($x=0.03$ and 0.15) thin films has been investigated using x-ray magnetic circular dichroism...
Kobayashi, M., Ishida, Y., Hwang, J. I., Song, G. S., Takizawa, M., Fujimori, A., ...
The electronic structure of In$_{2-x}$V$_x$O$_3$ ($x=0.08$) has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The V $2p$ core-level PES and XAS...
Takeda, Y., Kobayashi, M., Okane, T., Ohkochi, T., Okamoto, J., Saitoh, Y., ...
The magnetic properties of as-grown Ga$_{1-x}$Mn$_{x}$As have been investigated by the systematic measurements of temperature and magnetic field dependent soft x-ray magnetic circular dichroism...
Kobayashi, M., Hwang, J. I., Song, G. S., Ooki, Y., Takizawa, M., Fujimori, A., ...
The electronic structure of Li-doped Ni$_{1-x}$Fe$_x$O has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The Ni $2p$ core-level PES and XAS spectra...
Kobayashi, M., Ooki, Y., Takizawa, M., Song, G. S., Fujimori, A., Takeda, Y., ...
By means of photoemission and x-ray absorption spectroscopy, we have studied the electronic structure of (Ni,Zn,Fe,Ti)$_{3}$O$_{4}$ thin films, which exhibits a cluster glass behavior with a...
Okamoto, J., Okane, T., Saitoh, Y., Terai, K., Muramatsu, Y., ...
Ca_1-xSr_xRuO_3, which is ferromagnetic for Sr concentration x > 0.3, has been studied by x-ray magnetic circular dichroism (XMCD) in Ru 3p and O 1s core-level x-ray absorption. XMCD signals appear...
Ishida, Y., Kobayashi, M., Hwang, J. I., Takeda, Y., Okane, T., ...
We have performed x-ray magnetic circular dichroism (XMCD) and valence-band photoemission studies of the diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te. XMCD signals due to ferromagnetism...
Depth profile high-energy spectroscopic study of Mn-doped GaN prepared by thermal diffusion (2007)
Hwang, J. I., Osafune, Y., Kobayashi, M., Ebata, K., Ooki, Y., Ishida, Y., ...
We have performed an $in$-$situ$ depth profile study of Mn-doped GaN prepared by a low temperature thermal diffusion method using photoemission and x-ray absorption spectroscopy. It was revealed from...
Ishida, Y., Hwang, J. I., Kobayashi, M., Takeda, Y., Mamiya, K., Okamoto, J., ...
We performed a soft x-ray magnetic circular dichroism (XMCD) study of a Zn$_{1-x}$V$_x$O thin film which showed small ferromagnetic moment. Field and temperature dependences of V 2$p$ XMCD signals...
Dynamic and static fluctuations in polymer gels studied by neutron spin-echo (2006)
Kanaya, T, Takahashi, N, Nishida, K, Seto, H, Nagao, M, Takeda, Y
Ghosh, Shankar, Kamaraju, N, Seto, M, Fujimori, A, Takeda, Y, Ishiwata, S, ...
Temperature-dependent micro-Raman studies of orthorhombic $CaFeO_{3}$ and rhombohedral $La_{0.33}Sr_{0.67}FeO_{3}$ were carried out with an aim to study the role of a lattice in the formation of the...
Kobayashi, M., Ishida, Y., Hwang, J. L., Mizokawa, T., Fujimori, A., Mamiya, K., ...
We report on the results of x-ray absorption (XAS), x-ray magnetic circular dichroism (XMCD), and photoemission experiments on {\it n}-type Zn$_{1-x}$Co$_x$O ($x=0.05$) thin film, which shows...
Nishitani, T., Nakanishi, T., Yamamoto, M., Okumi, S., Furuta, F., Miyamoto, M., ...
GaAs–GaAsP and InGaAs–AlGaAs strained-layer superlattice photocathodes are presented as emission sources for highly polarized electron beams. The GaAs–GaAsP cathode achieved a maximum...
Ghosh, Shankar, Kamaraju, N, Seto, M, Fujimori, A, Takeda, Y, Ishiwata, S, ...
Temperature-dependent micro-Raman studies of orthorhombic $CaFeO_{3}$ and rhombohedral $La_{0.33}Sr_{0.67}FeO_{3}$ were carried out with an aim to study the role of a lattice in the formation of the...
Spencer (Beckett), Elizabeth A.H., Takeda, Y., Yanase, H., Sanders, K. M., Ward, S. M.
Published in The Journal of Comparative Neurology, 2005; 493 (2):193-206 at www.interscience.wiley.com
Spencer (Beckett), Elizabeth A.H., Takeda, Y., Yanase, H., Sanders, K. M., Ward, S. M.
Published in The Journal of Comparative Neurology, 2005; 493 (2):193-206 at www.interscience.wiley.com
Honda, S., Aoki, W., Ando, H., Izumiura, H., Kajino, T., Kambe, E., ...
Spectroscopic Studies of Extremely Metal-Poor Stars with Subaru/HDS:I. Observational Data (2004)
Honda, S., Aoki, W., Ando, H., Izumiura, H., Kajino, T., Kambe, E., ...
We have obtained high-resolution (R $\simeq$ 50,000 or 90,000), high-quality (S/N $\ga$ 100) spectra of 22 very metal-poor stars ([Fe/H] $\la$ -2.5) with the High Dispersion Spectrograph fabricated...
Sugai, I, Takeda, Y, Oyaizu, M, Kawakami, H, Hattori, Y, Kawasaki, K, ...
Cui, XY, Hu, QD, Tekaya, M, Shimoda, Y, Ang, BT, Nie, DY, ...
Neurons and glia in the vertebrate central nervous system arise in temporally distinct, albeit overlapping, phases. Neurons are generated first followed by astrocytes and oligodendrocytes from common...
F3/contactin acts as a functional ligand for notch during oligodendrocyte maturation (2003)
Hu, QD, Ang, BT, Karsak, M, Hu, WP, Cui, XY, Duka, T, ...
Axon-derived molecules are temporally and spatially required as positive or negative signals to coordinate oligodendrocyte differentiation. Increasing evidence suggests that, in addition to the...
Different routes to charge disproportionation in perovskites-type Fe oxides (2002)
Matsuno, J., Mizokawa, T., Fujimori, A., Takeda, Y., Kawasaki, S., Takano, M.
Iron perovskites CaFeO_3 and La_{0.33}Sr_{0.67}FeO_3 show charge disproportionation, resulting in charge-ordered states with Fe^{3+}:Fe^{5+} =1:1 and =2:1, respectively. We have made photoemission...
Matsuno, J., Fujimori, A., Takeda, Y., Takano, M.
We have studied the chemical potential shift in La(1-x)Sr(x)MnO(3) as a function of doped hole concentration by core-level x-ray photoemission. The shift is monotonous, which means that there is no...
Aoki, W., Ando, H., Honda, S., Iye, M., Izumiura, H., Kajino, T., ...
We have obtained a high resolution (R~90,000) spectrum of the carbon- and s-process-element-rich, very metal-poor ([Fe/H]=-2.7) subgiant LP625-44, as well as that of HD140283 (a metal-poor subgiant...
Photospheric Abundances of Volatile and Refractory Elements in Planet-Harboring Stars (2001)
Takeda, Y., Sato, B., Kambe, E., Aoki, W., Honda, S., Kawanomoto, S., ...
By using the high-dispersion spectra of 14 bright planet-harboring stars (along with 4 reference stars) observed with the new coude echelle spectrograph at Okayama Astrophysical Observatory, we...
Behavior of Sulfur Abundances in Metal-Poor Giants and Dwarfs (2001)
Takada-Hidai, M., Takeda, Y., Sato, S., Honda, S., Sadakane, K., Kawanomoto, S., ...
LTE and NLTE abundances of sulfur in 6 metal-poor giants and 61 dwarfs (62 dwarfs, including the Sun) were explored in the range of -3 \lsim [Fe/H] \lsim $+0.5$ using high-resolution, high...
Structure and electrochemical behaviors of LixCoO2 (x > 1) treated under high oxygen pressure (2001)
Imanishi, N, Fujii, M, Hirano, A, Takeda, Y, Inaba, M, Ogumi, Z
Takeda, Y., Takada-Hidai, M., Sato, S., Sargent, W. L. W., Lu, L., Barlow, T. A., ...
The abundance of oxygen was determined for selected very metal-poor G-K stars (six giants and one turn-off star) based on the high S/N and high-resolution spectra observed with Keck HIRES in the red...
Central Rotation Curves of Spiral Galaxies (1999)
Sofue, Y., Tutui, Y., Honma, M., Tomita, A., Takamiya, T., Koda, J., ...
We present high-resolution central-to-outer rotation curves for Sb, SBb, Sc, and SBc galaxies. We discuss their general characteristics, particularly their central behavior, as well as dependencies...
Process and Properties of PM Al-Si-X Alloys. (1998)
Takeda, Y., Odani, Y., Hayashi, T., Akechi, K.
Alloys are needed by the automotive, home appliance, and other civil industries to replace cast iron and steel products; high strength, wear resistance, high modulus of elasticity, thermal expansion,...
Brittle and Ductile Creep Rupture Life Prediction of 1CrMoV Steel Notched Thick Plates. (1998)
Ando, K., Takeda, Y., Takezoe, K.
An analytical prediction method of brittle and ductile creep rupture life of 1CrMoV steel notched thick plate is proposed; rupture time is evaluated as a sum of crack growth life t(sub p) and crack...
Microstructure and Mechanical Properties of P/M Al-Si-X Alloy. (1998)
Takeda, Y., Odani, Y., Hayashi, T., Akechi, K.
Air-atomized Si-2024 is shown to have an extended eutectic silicon content of 17% and have a simple mixture of fine eutectic silicon crystals and an aluminum matrix; the addition of Fe and/or Ni is...
Murata, Y., Higuchi, T., Takeda, Y., Morinaga, M., Yukawa, N.
The solid solubilities of Ti5Si3 with vanadium and niobium additions were determined to be 18.5 at% and 15.6 at%; the mechanical properties of pure and alloyed Ti5Si3 were studied; the microhardness...
Al-Fe-X Alloys Consolidated by Powder Forging Without Lateral Flow. (1998)
Kondoh, K., Kaji, T., Hayashi, T., Takeda, Y.
This paper presents a study of Al-8 wt%Fe alloys consolidated by powder forging without lateral flow. Results of tensile tests at room temperature and at 373-573 K show that UTS was 402 MPa, higher...
Mechanical Properties and Oxidation Resistance of High Purity TiAl Intermetallic Compounds. (1998)
Murata, Y., Morinaga, M., Shimamura, Y., Takeda, Y., Miyazaki, S.
The mechanical properties and oxidation resistance of high purity TiAl intermetallic compounds were investigated. Ductility, microstructure, fracture, and grain boundaries were compared to ordinary...
Electrical Conductivity of Tetragonal Stabilized Zirconia. (1998)
Yamamoto, O., Takeda, Y., Kanno, R., Kohno, K.
The electrical conductivity change on annealing for tetragonal stabilized zirconia (TZP) was studied with the help of a.c. impedance dispersion analysis techniques. The dependences of the...
Performance of the RNB linac at KEK-Tanashi (1998)
Arai, S, Arakaki, Y, Imanishi, A, Niki, K, Okada, M, Takeda, Y, ...
Acceleration test of radioactive nuclear beam at INS (1998)
Tomizawa, M, Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, Jeong, S C, ...
Linac complex of the radioactive beam facility at KEK-Tanashi (1998)
Tomizawa, M, Arai, S, Arakaki, Y, Imanishi, A, Okada, M, Niki, K, ...
First Beam Tests Of The Ins Split Coaxial Rfq For Radioactive Nuclei (1998)
S. Arai, A. Imanishi, K. Niki, M. Okada, Y. Takeda, E. Tojyo, ...
A 25.5-MHz split coaxial RFQ has come into operation at INS. This linac was designed so as to accelerate ions with a charge-tomass ratio greater than 1/30 from 2 to 172 keV/u. The maximum intervane...
Putrescine accumulation in banana fruit with ripening during storage. (1997)
Takeda, Y., Yoza, K.I., Nogata, Y., Kusumoto, K.I., Voragen, A.G.J., Ohta, H.
Status of the INS heavy ion linac for short-lived nuclear beams (1996)
Niki, K, Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, Katayama, T, ...
Status of the RNB facility at INS (1996)
Katayama, I, Nomura, T, Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, ...
New ISOL-based radioactive nuclear beam facility at INS (1996)
Kubono, S, Nomura, T, Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, ...
Beam test results of the INS RFQ/IH linac (1996)
Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, Katayama, T, Masuda, H, ...
Construction and beam tests of a 25.5-MHz SPLIT coaxial RFQ for radioactive nuclei (1996)
Arai, S, Imanishi, A, Niki, K, Okada, M, Takeda, Y, Tojyo, E, ...
Progress report of the interdigital-H linac for radioactive nuclei at INS (1996)
Tomizawa, M, Arai, S, Arakaki, Y, Imanishi, A, Katayama, T, Niki, K, ...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...
Progress report on the construction of the heavy-ion linacs for radioactive nuclei (1995)
Tomizawa, M, Arai, S, Arakaki, Y, Hashimoto, Y, Imanishi, A, Katayama, T, ...
First beam tests of the INS split coaxial RFQ for radioactive nuclei (1995)
Arai, S, Imanishi, A, Niki, K, Okada, M, Takeda, Y, Tojyo, E, ...
Low-energy radioactive nuclear beam project at INS (1995)
Kubono, S, Nomura, T, Arai, S, Hashimoto, Y, Imanishi, A, Jeong, S C, ...
Iodometric method of the determination of the exposed damage surface of cereal grain (1995)
A. Miś, S. Grundas, Y. Takeda, S. Hizukuri
In this paper, a method for determining the area of the exposed damage surface of grain endosperm by means of the amperometric measurement of iodine adsorption has been presented.According to the...
Cavity construction and low power tests of the INS split coaxial RFQ for radioactive nuclei (1994)
Arai, S, Imanishi, A, Niki, K, Takeda, Y, Tojyo, E, Tokuda, N
Some determinants of morphology and release rate from poly()lactic acid microspheres (1990)
Kishida, A., Dressman, Jennifer B., Yoshioka, S., Aso, Y., Takeda, Y.
Morphology and release rate from poly()lactic acid microspheres were studied as a function of drug loading, drug lipophilicity and solvent evaporation rate. Sudan III was used to exemplify lipophilic...
LOCAL STRUCTURE IN InGaAsP QUATERNARY ALLOYS (1986)
Oyanagi, H., Takeda, Y., Matsushita, T., Ishiguro, T., Sasaki, A.
The local structure of InGaAsP quaternary alloys epitaxially grown on InP substrates has been studied by EXAFS and near-edge structure. The bimodal distribution of bondlength at both cation (In, Ga)...
ULTRASONIC STUDY OF SINTERED SiC AT LOW TEMPERATURES (1986)
Hikata, A., Elbaum, C., Inomata, Y., Orange, G., Takeda, Y.
We investigated the temperature dependence, at low temperatures (< 1 K), of sound velocity in sintered silicon carbide samples, containing three different sintering additives, boron or beryllium...
LOCAL STRUCTURE IN InGaAsP QUATERNARY ALLOYS (1986)
Oyanagi, H., Takeda, Y., Matsushita, T., Ishiguro, T., Sasaki, A.
The local structure of InGaAsP quaternary alloys epitaxially grown on InP substrates has been studied by EXAFS and near-edge structure. The bimodal distribution of bondlength at both cation (In, Ga)...
ULTRASONIC STUDY OF SINTERED SiC AT LOW TEMPERATURES (1986)
Hikata, A., Elbaum, C., Inomata, Y., Orange, G., Takeda, Y.
We investigated the temperature dependence, at low temperatures (< 1 K), of sound velocity in sintered silicon carbide samples, containing three different sintering additives, boron or beryllium...