Y. Saitoh

Publication List Details

Period

1997 - 2008

Number

66

Co-Authors

Electronic structure of Ga$_{1-x}$Cr$_{x}$N and Si-doping effects studied by photoemission and X-ray absorption spectroscopy (2008)

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...

Local electronic structure of Cr in the II-VI diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te (2008)

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...

Electronic Structures of Fe$_{3-x}V$_x$Si Probed by Photoemission Spectroscopy (2008)

Cui, Y. T., Kimura, A., Miyamoto, K., Sakamoto, K., Xie, T., Qiao, S., ...

The electronic structures of the Heusler type compounds Fe$_{3-x}V$_x$Si in the concentration range between x = 0 and x = 1 have been probed by photoemission spectroscopy (PES). The observed shift of...

Hybridization between the conduction band and 3d orbitals in the oxide-based diluted magnetic semiconductor In$_{2-x}$V$_x$O$_3$ (2008)

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...

Nature of magnetic coupling between Mn ions in as-grown Ga$_{1-x}$Mn$_{x}$As studied by x-ray magnetic circular dichroism (2008)

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...

Systematic changes of the electronic structure of the diluted ferromagnetic oxide Li-doped Ni$_{1-x}$Fe$_x$O with hole doping (2007)

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...

Photoemission and x-ray absorption studies of valence states in (Ni,Zn,Fe,Ti)$_{3}$O$_{4}$ thin films exhibiting photo-induced magnetization (2007)

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...

Soft x-ray magnetic circular dichroism study of Ca_1-xSr_xRuO_3 across the ferromagnetic quantum phase transition (2007)

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...

X-ray magnetic circular dichroism and photoemission study of the diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te (2007)

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...

Phase Change Observed in Ultrathin Ba0.5Sr0.5TiO3 Films by in-situ Resonant Photoemission Spectroscopy (2007)

Terai, K., Wadati, H., Kobayashi, M., Takizawa, M., Hwang, J. I., ...

Epitaxial Ba0.5Sr0.5TiO3 thin films were prepared on Nb-doped SrTiO3 (100)substrates by the pulsed laser deposition technique, and were studied by measuring the Ti 2p - 3d resonant photoemission...

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...

Soft x-ray magnetic circular dichroism study of weakly ferromagnetic Zn$_{1-x}$V$_x$O thin film (2006)

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...

Photoemission study of (V$_{1-x}$M$_x$)$_2$O$_3$ (M=Cr, Ti) (2006)

Denlinger, J. D., Allen, J. W., Sekiyama, A., ...

We present high-resolution bulk-sensitive photoemission spectra of (V$_{1-x}$M$_x$)$_2$O$_3$ (M=Cr, Ti). The measurements were made for the paramagnetic metal (PM), paramagnetic insulator (PI), and...

Photoproduction of $\eta$-mesons off C and Cu nuclei for photon energies below 1.1 GeV (2005)

Kinoshita, T., Yamazaki, H., Fukasawa, H., Hirota, K., Ishikawa, T., Kasagi, J., ...

The $\eta$-meson photoproduction cross sections have been measured on the C and Cu targets for the photon energies between 600 and 1100 MeV to investigate the behavior of the $S_{11}$(1535) resonance...

High-resolution soft x-ray photoelectron study of density of states and thermoelectric properties of the Heusler-type alloys (Fe_{2/3}V_{1/3})_{100−y}Al_y (2005)

Soda, K., Murayama, H., Shimba, K., Yagi, S., Yuhara, J., Takeuchi, T., ...

The high-resolution soft x-ray photoelectron study of Heusler(L2_1)-type (Fe_{2/3}V_{1/3})_{100−y}Al_y (y=23.8−25.8) alloys directly confirms the correlation between their thermoelectric...

Characterization of Magnetic Components in the Diluted Magnetic Semiconductor Zn$_{1-x}$Co$_x$O by X-ray Magnetic Circular Dichroism (2005)

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...

Technique for bulk Fermiology by photoemission applied to layered ruthenates (2004)

Sekiyama, A., Kasai, S., Tsunekawa, M., Ishida, Y., Sing, M., Irizawa, A., ...

We report the Fermi surfaces of the superconductor Sr2RuO4 and the non-superconductor Sr1.8Ca0.2RuO4 probed by bulk-sensitive high-energy angle-resolved photoemission. It is found that there is one...

Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3 (2003)

Sekiyama, A., Fujiwara, H., Imada, S., Suga, S., Eisaki, H., Uchida, S. I., ...

We report high-resolution high-energy photoemission spectra together with parameter-free LDA+DMFT (local density approximation + dynamical mean-field theory) results for Sr1-xCaxVO3, a prototype 3d1...

Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 (2002)

Denlinger, J. D., Allen, J. W., Sekiyama, A., ...

We present the first observation of a prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 and report new spectral calculations that combine the local density...

Resonant photoemission spectroscopy study of insulator-to-metal transition in Cr- and Ru-doped Nd_{1/2}A_{1/2}Mn_{1-y} O_{3} (A=Ca, Sr) (2002)

Kim, J. H., Sekiyama, A., Kasai, S., Suga, S., Han, S. W., ...

Electronic structures of very dilute Cr- or Ru-doped Nd_{1/2}A_{1/2}MnO_{3} (NAMO; A=Ca, Sr) manganites have been investigated using the Mn and Cr 2p -> 3d resonant photoemission spectroscopy (PES)....

Genuine Electronic States of Vanadium Perovskites Revealed by High-Energy Photoemission (2002)

Sekiyama, A., Fujiwara, H., Imada, S., Eisaki, H., Uchida, S. I., Takegahara, K., ...

Bulk-sensitive high-resolution photoemission was carried out on a prototype 3d1 metallic Sr1-xCaxVO3. In a strong contrast to so far reported results, the bulk spectral functions are revealed to be...

Bulk-sensitive photoemission spectroscopy of A_2FeMoO_6 double perovskites (A=Sr, Ba) (2002)

Kim, J. H., Sekiyama, A., Kasai, S., Suga, S., Han, S. W., ...

Electronic structures of Sr_2FeMoO_6 (SFMO) and Ba_2FeMoO_6 (BFMO) double perovskites have been investigated using the Fe 2p->3d resonant photoemission spectroscopy (PES) and the Cooper minimum in...

High Resolution Bulk Sensitive Photoemission Study of the Metal-Insulator Transition in (V,Cr)2O3 : Comparison to LDA+DMFT Theory (2001)

Kim, Hyeong-Do, Park, J-H., Allen, J. W., Sekiyama, A., Yamasaki, A., Kadono, K., ...

%auto-ignore This paper has been withdrawn by the authors because its results have been superceded by new experimental data and new theory presented in S.-K. Mo et al., cond-mat/0212110.

Direct experimental verification of applicability of single-site model for angle integrated photoemission of small $T_{K}$ concentrated Ce compounds (2001)

Allen, J. W., Sekiyama, A., Yamasaki, A., Kadono, K., ...

Bulk-sensitive high-resolution Ce 4f spectra have been obtained from 3d $\to$ 4f resonance photoemission measurements on La$_{1-x}$Ce$_x$Al$_2$ and La$_{1-x}$Ce$_x$Ru$_2$ for $x = 0.0, 0.04, 1.0$....

High-resolution Ce 3d-edge resonant photoemission study of CeNi_2 (1999)

Yang, See-Hun, Kim, Hyeong-Do, Jung, Ran-Ju, Sekiyama, A., Iwasaki, T., ...

Resonant photoemission (RPES) at the Ce 3d -> 4f threshold has been performed for alpha-like compound CeNi_2 with extremely high energy resolution (full width at half maximum < 0.2 eV) to obtain...

Improvement and Restoration of Biomedical Images Blurred by Body Movement (1998)

Hori, J., Saitoh, Y., Kiryu, T., Okamoto, K., Sakai, K.

The restoration of biomedical images that have been blurred due to body movement are discussed. The observation system for these images is described using a mathematical operator and coordinate...

Enhanced Consolidation of Ball-Milled Nb-Al Intermetallic Powders. (1998)

Mino, K., Yoshizawa, H., Saitoh, Y.

Nb3Al and Al3Nb compounds were milled in a high energy ball-mill to refine the grain structures to 10 nm in size; die-press tests showed enhanced consolidation by ball-milling as low as 0.4Tm and...

Regulation of mitochondrial pyruvate dehydrogenase activity by tau protein kinase I/glycogen synthase kinase 3beta in brain.

Hoshi, M, Takashima, A, Noguchi, K, Murayama, M, Sato, M, Kondo, S, ...

According to the amyloid hypothesis for the pathogenesis of Alzheimer disease, beta-amyloid peptide (betaA) directly affects neurons, leading to neurodegeneration and tau phosphorylation. In rat...

Isolation of methicillin-resistant coagulase-negative staphylococci from chickens.

Kawano, J, Shimizu, A, Saitoh, Y, Yagi, M, Saito, T, Okamoto, R

Methicillin-resistant coagulase-negative staphylococci were isolated from the nares and skin of 1- to 8-week-old healthy chickens in three flocks from a farm. Isolation of methicillin-resistant...

Moellerella wisconsensis, a new genus and species of Enterobacteriaceae found in human stool specimens.

Hickman-Brenner, F W, Huntley-Carter, G P, Saitoh, Y, Steigerwalt, A G, Farmer, J J, Brenner, D J

The name Moellerella wisconsensis is proposed for a group of the family Enterobacteriaceae previously called enteric group 46. The species name, wisconsensis, was coined because six of the nine...

Reproducibility of the MS-2 system for identification of members of the family Enterobacteriaceae: a collaborative study with blindly assigned reference stains.

Yamane, N, Kato, H, Saitoh, Y, Mukojima, T, Matsuoka, K

The reproducibility of identification and biochemical reactions for five different reference organisms of Enterobacteriaceae; Proteus vulgaris, Klebsiella pneumoniae, Escherichia coli, Serratia...

Isolation and detection of multiple yeasts from a single clinical sample by use of Pagano-Levin agar medium.

Yamane, N, Saitoh, Y

A total of 15,234 clinical samples were tested on modified Pagano-Levin agar medium to detect multiple yeast species within a single sample. Samples containing more than one yeast species were...

Atypical biogroups of Escherichia coli found in clinical specimens and description of Escherichia hermannii sp. nov.

Brenner, D J, Davis, B R, Steigerwalt, A G, Riddle, C F, McWhorter, A C, Allen, S D, ...

DNA relatedness was used to define the biochemical boundaries of Escherichia coli. A large number of biochemically atypical strains were shown to belong to biogroups of E. coli. These included...

Activation of the osmo-sensitive chloride conductance involves P21rho and is accompanied by a transient reorganization of the F-actin cytoskeleton.

Tilly, B C, Edixhoven, M J, Tertoolen, L G, Morii, N, Saitoh, Y, Narumiya, S, ...

Hypo-osmotic stimulation of human Intestine 407 cells rapidly activated compensatory CL- and K+ conductances that limited excessive cell swelling and, finally, restored the original cell volume....

Immunochemical and molecular characterization of anti-RNA polymerase I autoantibodies produced by tight skin mouse.

Shibata, S, Muryoi, T, Saitoh, Y, Brumeanu, T D, Bona, C A, Kasturi, K N

Autoantibodies against nuclear proteins like RNA polymerase I (RNA pol I) are produced in a number of rheumatic autoimmune diseases. Production of antibodies specific for the 190-kD subunit of RNA...

Enhancement of secretagogue-induced phosphoinositide turnover and amylase secretion by bile acids in isolated rat pancreatic acini.

Takeyama, Y, Nakanishi, H, Ohyanagi, H, Saitoh, Y, Kaibuchi, K, Takai, Y

Small amounts (0.1-0.5 mM) of deoxycholate enhanced amylase secretion, which had been induced by submaximal doses of carbachol or cholecystokinin octapeptide, without affecting the maximal levels of...

Protective effect of a microtubule stabilizer taxol on caerulein-induced acute pancreatitis in rat.

Ueda, T, Takeyama, Y, Kaneda, K, Adachi, M, Ohyanagi, H, Saitoh, Y

The effect of taxol, which is a microtubule stabilizer, was examined in a model of acute edematous pancreatitis induced in rat by the administration of caerulein. Prophylactic administration of taxol...

Common T cell receptor clonotype in lacrimal glands and labial salivary glands from patients with Sjögren's syndrome.

Matsumoto, I, Tsubota, K, Satake, Y, Kita, Y, Matsumura, R, Murata, H, ...

Sjogren's syndrome (SS) is an autoimmune disease characterized by lymphocytic infiltration into lacrimal and salivary glands leading to symptomatic dry eyes and mouth. Immunohistological studies have...

Biochemical and pharmacological studies with KT7692 and LY294002 on the role of phosphatidylinositol 3-kinase in Fc epsilon RI-mediated signal transduction.

Yano, H, Agatsuma, T, Nakanishi, S, Saitoh, Y, Fukui, Y, Nonomura, Y, ...

Wortmannin inhibited phosphatidylinositol 3-kinase (P13-kinase) and Fc epsilon RI-mediated histamine secretion in RBL-2H3 cells to a similar degree, with IC50 values of 3 and 2 nM, respectively....

Induction of long-term remission in advanced hepatocellular carcinoma with percutaneous isolated liver chemoperfusion.

Ku, Y, Iwasaki, T, Fukumoto, T, Tominaga, M, Muramatsu, S, Kusunoki, N, ...

OBJECTIVE: The aim of this study was to report the long-term results of percutaneous isolated liver chemoperfusion with hepatic venous isolation and charcoal hemoperfusion (HVI-CHP) in patients with...

Follow-up studies of radical resection for pancreaticoduodenal cancer.

Sato, T, Saitoh, Y, Noto, N, Matsuno, S

In a study of 66 patients with pancreaticoduodenal cancer with pancreaticoduodenectomy, there were five (7.5%) hospital deaths. Five-year survival rates were 7.8% in 20 patients with carcinoma of the...

Regulation of mitochondrial pyruvate dehydrogenase activity by tau protein kinase I/glycogen synthase kinase 3beta in brain.

Hoshi, M, Takashima, A, Noguchi, K, Murayama, M, Sato, M, Kondo, S, ...

According to the amyloid hypothesis for the pathogenesis of Alzheimer disease, beta-amyloid peptide (betaA) directly affects neurons, leading to neurodegeneration and tau phosphorylation. In rat...

Isolation of methicillin-resistant coagulase-negative staphylococci from chickens.

Kawano, J, Shimizu, A, Saitoh, Y, Yagi, M, Saito, T, Okamoto, R

Methicillin-resistant coagulase-negative staphylococci were isolated from the nares and skin of 1- to 8-week-old healthy chickens in three flocks from a farm. Isolation of methicillin-resistant...

Moellerella wisconsensis, a new genus and species of Enterobacteriaceae found in human stool specimens.

Hickman-Brenner, F W, Huntley-Carter, G P, Saitoh, Y, Steigerwalt, A G, Farmer, J J, Brenner, D J

The name Moellerella wisconsensis is proposed for a group of the family Enterobacteriaceae previously called enteric group 46. The species name, wisconsensis, was coined because six of the nine...

Reproducibility of the MS-2 system for identification of members of the family Enterobacteriaceae: a collaborative study with blindly assigned reference stains.

Yamane, N, Kato, H, Saitoh, Y, Mukojima, T, Matsuoka, K

The reproducibility of identification and biochemical reactions for five different reference organisms of Enterobacteriaceae; Proteus vulgaris, Klebsiella pneumoniae, Escherichia coli, Serratia...

Isolation and detection of multiple yeasts from a single clinical sample by use of Pagano-Levin agar medium.

Yamane, N, Saitoh, Y

A total of 15,234 clinical samples were tested on modified Pagano-Levin agar medium to detect multiple yeast species within a single sample. Samples containing more than one yeast species were...

Atypical biogroups of Escherichia coli found in clinical specimens and description of Escherichia hermannii sp. nov.

Brenner, D J, Davis, B R, Steigerwalt, A G, Riddle, C F, McWhorter, A C, Allen, S D, ...

DNA relatedness was used to define the biochemical boundaries of Escherichia coli. A large number of biochemically atypical strains were shown to belong to biogroups of E. coli. These included...

Activation of the osmo-sensitive chloride conductance involves P21rho and is accompanied by a transient reorganization of the F-actin cytoskeleton.

Tilly, B C, Edixhoven, M J, Tertoolen, L G, Morii, N, Saitoh, Y, Narumiya, S, ...

Hypo-osmotic stimulation of human Intestine 407 cells rapidly activated compensatory CL- and K+ conductances that limited excessive cell swelling and, finally, restored the original cell volume....

Immunochemical and molecular characterization of anti-RNA polymerase I autoantibodies produced by tight skin mouse.

Shibata, S, Muryoi, T, Saitoh, Y, Brumeanu, T D, Bona, C A, Kasturi, K N

Autoantibodies against nuclear proteins like RNA polymerase I (RNA pol I) are produced in a number of rheumatic autoimmune diseases. Production of antibodies specific for the 190-kD subunit of RNA...

Enhancement of secretagogue-induced phosphoinositide turnover and amylase secretion by bile acids in isolated rat pancreatic acini.

Takeyama, Y, Nakanishi, H, Ohyanagi, H, Saitoh, Y, Kaibuchi, K, Takai, Y

Small amounts (0.1-0.5 mM) of deoxycholate enhanced amylase secretion, which had been induced by submaximal doses of carbachol or cholecystokinin octapeptide, without affecting the maximal levels of...

Protective effect of a microtubule stabilizer taxol on caerulein-induced acute pancreatitis in rat.

Ueda, T, Takeyama, Y, Kaneda, K, Adachi, M, Ohyanagi, H, Saitoh, Y

The effect of taxol, which is a microtubule stabilizer, was examined in a model of acute edematous pancreatitis induced in rat by the administration of caerulein. Prophylactic administration of taxol...

Common T cell receptor clonotype in lacrimal glands and labial salivary glands from patients with Sjögren's syndrome.

Matsumoto, I, Tsubota, K, Satake, Y, Kita, Y, Matsumura, R, Murata, H, ...

Sjogren's syndrome (SS) is an autoimmune disease characterized by lymphocytic infiltration into lacrimal and salivary glands leading to symptomatic dry eyes and mouth. Immunohistological studies have...

Biochemical and pharmacological studies with KT7692 and LY294002 on the role of phosphatidylinositol 3-kinase in Fc epsilon RI-mediated signal transduction.

Yano, H, Agatsuma, T, Nakanishi, S, Saitoh, Y, Fukui, Y, Nonomura, Y, ...

Wortmannin inhibited phosphatidylinositol 3-kinase (P13-kinase) and Fc epsilon RI-mediated histamine secretion in RBL-2H3 cells to a similar degree, with IC50 values of 3 and 2 nM, respectively....

Induction of long-term remission in advanced hepatocellular carcinoma with percutaneous isolated liver chemoperfusion.

Ku, Y, Iwasaki, T, Fukumoto, T, Tominaga, M, Muramatsu, S, Kusunoki, N, ...

OBJECTIVE: The aim of this study was to report the long-term results of percutaneous isolated liver chemoperfusion with hepatic venous isolation and charcoal hemoperfusion (HVI-CHP) in patients with...