M. Yokoyama

Details der Publikationsliste

Zeitraum

1980 - 2009

Anzahl

188

Co-Autoren

Magnetic-field dependence of antiferromagnetic structure in CeRh1-xCoxIn5 (2009)

Yokoyama, M., Ikeda, Y., Kawasaki, I., Nishikawa, D., Tenya, K., Kuwahara, K., ...

We investigated effects of magnetic field H on antiferromagnetic (AF) structures in CeRh_{1-x}Co_xIn_5 by performing the elastic neutron scattering measurements. By applying H along the [1,-1,0]...

Specific-heat study for ferromagnetic and antiferromagnetic phases in SrRu_{1-x}Mn_xO3 (2009)

Yamaji, A., Yokoyama, M., Nishihara, Y., Narumi, Y., Kindo, K.

Low-temperature electronic states in SrRu_{1-x}Mn_xO_3 for x = 0.4, gamma approaches to ~ 5 mJ/K^2 mol or less, where the antiferromagnetic order with an insulating feature in resistivity is...

Soluble interleukin-2 receptor retains prognostic value in patients with diffuse large B-cell lymphoma receiving rituximab plus CHOP (RCHOP) therapy (2009)

Ennishi, D., Yokoyama, M., Terui, Y., Asai, H., Sakajiri, S., Mishima, Y., ...

Background: Soluble interleukin-2 receptor (SIL-2R) is known to be a prognostic parameter in patients with diffuse large B-cell lymphoma (DLBCL) receiving cyclophosphamide, doxorubicin, vincristine...

Solar neutrino measurements in Super-Kamiokande-II (2008)

Cravens, J. P., Abe, K., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., ...

The results of the second phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first phase. The solar neutrino flux spectrum and time variation as well as...

Application of Hamamatsu MPPC to T2K Neutrino Detectors (2008)

Yokoyama, M., Nakaya, T., Gomi, S., Minamino, A., Nagai, N., Nitta, K., ...

A special type of Hamamatsu MPPC, with a sensitive area of 1.3x1.3mm^2 containing 667 pixels with 50x50um^2 each, has been developed for the near neutrino detector in the T2K long baseline neutrino...

Mass production test of Hamamatsu MPPC for T2K neutrino oscillation experiment (2008)

Yokoyama, M., Nakaya, T., Gomi, S., Minamino, A., Nagai, N., Nitta, K., ...

In the T2K near neutrino detectors, about 60 000 Hamamatsu Multi-Pixel Photon Counters (MPPCs) will be used. The mass production of MPPC has started in February 2008.In order to perform quality...

Change of Antiferromagnetic Structure near a Quantum Critical Point in CeRh1-xCoxIn5 (2008)

Yokoyama, M., Oyama, N., Amitsuka, H., Oinuma, S., Kawasaki, I., Tenya, K., ...

The elastic neutron scattering experiments were carried out on the solid solutions CeRh_{1-x}Co_xIn_5 to clarify the nature of the antiferromagnetic (AF) state in the vicinity of the quantum critical...

Search for matter-dependent atmospheric neutrino oscillations in Super-Kamiokande (2008)

Abe, K., Hayato, Y., Iida, T., Ikeda, M., Kameda, J., Koshio, Y., ...

We consider ν_μ→ν_τ oscillations in the context of the mass varying neutrino (MaVaN) model, where the neutrino mass can vary depending on the electron density along the flight path of the...

CD5 expression is potentially predictive of poor outcome among biomarkers in patients with diffuse large B-cell lymphoma receiving rituximab plus CHOP therapy (2008)

Ennishi, D., Takeuchi, K., Yokoyama, M., Asai, H., Mishima, Y., Terui, Y., ...

Background: Several biomarkers indicating poor prognosis have been reassessed in patients receiving rituximab combination chemotherapy for diffuse large B-cell lymphoma (DLBCL). However, few studies...

Field-angle-dependent specific heat measurements and gap determination of a heavy fermion superconductor URu2Si2 (2007)

Yano, K., Sakakibara, T., Tayama, T., Yokoyama, M., Amitsuka, H., Homma, Y., ...

To identify the superconducting gap structure in URu2Si2 we perform field-angle-dependent specific heat measurements for the two principal orientations in addition to field rotations, and theoretical...

Beam Position Feedback Systems For The Pf Storage Ring (2007)

Nakamura Haga Honda, M. Yokoyama

This paper will present an overview of the feedback systems and also report a performance test on a DSP board used for the global feedback control.

Computing System for the Belle Experiment (2007)

Adachi Itoh Katayama, I. Adachi, R. Itoh, N. Katayama, T. Tsukamoto, T. Hibino, ...

this paper, we first introduce the BELLE computing software(section 2) and system(section 3) including PC farms and its upgrade(section 4). Then, in section 5, we will explain the scheme of the DST...

Polarized neutron scattering study on antiferromagnetic states in CeRh0.6Co0.4In5 (2007)

Yokoyama, M., Oyama, N., Amitsuka, H., Oinuma, S., Kawasaki, I., Tenya, K., ...

Polarized neutron scattering experiments were performed on mixed compound CeRh0.6Co0.4In5 to clarify the nature of the low-temperature ordered states. Three nonequivalent Bragg peaks, characterized...

Observation of the anisotropy of 10 TeV primary cosmic ray nuclei flux with the Super-Kamiokande-I detector (2007)

Guillian, G., Hosaka, J., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., ...

The relative sidereal variation in the arrival direction of primary cosmic ray nuclei of median energy 10 TeV was measured using downward, through-going muons detected with the Super-Kamiokande-I...

Evolution of Heterogeneous Antiferromagnetic State in URu2Si2: Study of Hydrostatic-Pressure, Uniaxial-Stress and Rh-Dope Effects (2006)

Yokoyama, M., Amitsuka, H.

We have investigated the nature of the competition between hidden order and antiferromagnetic (AF) order in URu_2Si_2 by performing the neutron scattering experiments under hydrostatic-pressure P,...

Pressure-temperature phase diagram of the heavy-electron superconductor URu2Si2 (2006)

Amitsuka, H., Matsuda, K., Kawasaki, I., Tenya, K., Yokoyama, M., Sekine, C., ...

The pressure-temperature phase diagram of the heavy-electron superconductor URu2Si2 has been reinvestigated by ac-susceptibility and elastic neutron-scattering (NS) measurements performed on a small...

New Magnetic State in Incommensurate Magnetic Phase of Heavy-Fermion Superconductor CeRh0.6Co0.4In5 (2006)

Yokoyama, M., Amitsuka, H., Matsuda, K., Gawase, A., Oyama, N., Kawasaki, I., ...

We performed elastic neutron scattering experiments on solid solution CeRh1-xCoxIn5 with x=0.4 to clarify the nature of the antiferromagnetic (AF) phase in the vicinity of the quantum critical point....

Development of Multi-Pixel Photon Counters (2006)

Yokoyama, M., Nobuhara, T., Taguchi, M., Nakaya, T., Murakami, T., Nakadaira, T., ...

The multi-pixel photon counter (MPPC) is a newly developed photodetector with an excellent photon counting capability. It also has many attractive features such as small size, high gain, low...

Deuteron and Anti-deuteron Production in $e^+ e^-$ Collisions at the Z Resonance (2006)

Schael, S, Aubert, B, Zalipska, J, Yoshida, M, Yoo, J, Yokoyama, M, ...

Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LEP. The production rate of anti-deuterons is measured to be 5.9+-1.8+-0.5 10^-6 per hadronic Z decay in...

A Robust Adaptive MMSE Rake Receiver for DS-CDMA System in a Fast Multipath Fading Channel (2006)

K. Jeong, M. Yokoyama, H. Uehara

In this paper, we propose a robust adaptive minimum mean square error (MMSE) Rake receiver for asynchronous DS-CDMA systems. The receiver uses the modified MMSE criterion that incorporates the...

Antiferromagnetic Order in Disorder-Induced Insulating Phase of SrRu_{1-x}Mn_xO_3 (0.4 (2005)

Yokoyama, M., Satoh, C., Saitou, A., Kawanaka, H., Bando, H., Ohoyama, K., ...

We have performed the powder neutron diffraction measurements on the solid solutions of SrRu_{1-x}Mn_xO_3, and found that the itinerant ferromagnetic order observed in pure SrRuO_3 changes into the...

Overview of confinement and MHD stability in the Large Helical Device (2005)

Motojima,O., Ida,K., Watanabe,K. Y., Nagayama,Y., Komori,A., Morisaki,T., ...

This article based on the 2004 Fusion Energy Conference contributions (Vilamoura, Portugal, 1-6 November 2004)

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Magnetic Excitations in U(Ru_{1-x}Rh_x)_2Si_2 (x (2004)

Yokoyama, M., Amitsuka, H., Itoh, S., Kawasaki, I., Tenya, K., Yoshizawa, H.

We have investigated magnetic excitations for a mixed phase of hidden order (HO) and the antiferromagnetic (AF) order in U(Ru_{1-x}Rh_x)_2Si_2 (x

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Formation of silicon triazacorrole and tetrabenzotriazacorrole by the ring contraction of the corresponding tetraazaporphyrin ligands (2004)

Yokoyama, M

Silicon-inserted triazacorrole, its mu-oxo dimer, and tetra benzotriazaco rrole have been obtained by ring contraction when metal-free tetraazaporphyrin (TAP) and phthalocyanine (Pc), respectively,...

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Idei, H., Inagaki, S., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Extension and its characteristics of ECRH plasma in the LHD (2004)

Kubo, Shin, Shimozuma, T., Yoshimura, Y., Notake, T., Inagaki, S., Yokoyama, M., ...

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state....

Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa (2004)

Okamura, S., Matsuoka, K., Nishimura, S., Isobe, M., Suzuki, C., Shimuzu, A., ...

A low aspect ratio stellarator CHS-qa with a quasi-axisymmetric configuration has been designed at NIFS, whose main objective is the experimental study of confinement improvement. The high beta...

Review on the progress of the LHD experiment (2004)

Motojima, O., Yamada, H., Komori, A., Watanabe, K. Y., Mutoh, T., Takeiri, Y., ...

Recent progress in the Large Helical Device (LHD) experiment during the last 2 yr is reviewed. The LHD has been extending its operational regime toward fusion-relevant conditions while taking...

Neutron Scattering Study on Competition between Hidden Order and Antiferromagnetism in U(Ru_{1-x}Rh_x)_2Si_2 (x (2003)

Yokoyama, M., Amitsuka, H., Itoh, S., Kawasaki, I., Tenya, K., Yoshizawa, H.

We have performed elastic and inelastic neutron scattering experiments on the solid solutions U(Ru_{1-x}Rh_x)_2Si_2 for the Ru rich concentrations: x=0, 0.01, 0.02, 0.025, 0.03, 0.04 and 0.05. Hidden...

Competition between hidden order and antiferromagnetism in URu_2Si_2 under uniaxial stress studied by neutron scattering (2003)

Yokoyama, M., Amitsuka, H., Tenya, K., Watanabe, K., Kawarazaki, S., Yoshizawa, H., ...

We have performed elastic neutron scattering experiments under uniaxial stress sigma applied along the tetragonal [100], [110] and [001] directions for the heavy electron compound URu2Si2. We found...

Computing System for the Belle Experiment (2003)

Adachi, I., Itoh, R., Katayama, N., Tsukamoto, T., Hibino, T., Yokoyama, M., ...

We describe the offline computing system of the Belle experiment, consisting of a computing farm with one thousand IA-32 CPUs. Up to now, the Belle experiment has accumulated more than 120 fb$^{-1}$...

Proper-time Resolution Function for Measurement of Time Evolution of B Mesons at the KEK B-Factory (2003)

Tajima, H., Aihara, H., Higuchi, T., Kawai, H., Nakadaira, T., Tanaka, J., ...

The proper-time resolution function for the measurement of the time evolution of B mesons with the Belle detector at KEKB is studied in detail. The obtained resolution function is applied to the...

A new class of quasi-omnigenous configurations (2003)

Isaev,M. Yu., Nührenberg,J., Mikhailov,M. I., Cooper,W. A., Watanabe,K. Y., Yokoyama,M., ...

An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...

A demonstration of magnetic field optimization in LHD (2003)

Murakami,S., Yamada,H., Wakasa,A., Sasao,M., Isobe,M., Ozaki,T., ...

The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...

MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)

Toi,K., Ohdachi,S., Yamamoto,S., Nakajima,N., Sakakibara,S., Watanabe,K. Y., ...

MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...

A new class of quasi-omnigenous configurations (2003)

Isaev, M. Yu., Nührenberg, J., Mikhailov, M. I., Cooper, W. A., Watanabe, K. Y., Yokoyama, M., ...

An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...

A demonstration of magnetic field optimization in LHD (2003)

Murakami, S., Yamada, H., Wakasa, A., Sasao, M., Isobe, M., Ozaki, T., ...

The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...

MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)

Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...

MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...

Impact of heat deposition profile on global confinement of NBI heated plasmas in the LHD (2003)

Yamada, H., Murakami, S., Yamazaki, K., Kaneko, O., Miyazawa, J., Sakamoto, R., ...

Energy confinement and heat transport of net-current-free NBI heated plasmas in the large helical device (LHD) are discussed with emphasis on density and power deposition profile dependences....

Recent advances in the LHD experiment (2003)

Motojima, O., Ohyabu, N., Komori, A., Kaneko, O., Yamada, H., Kawahata, K., ...

In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted...

A new class of quasi-omnigenous configurations (2003)

Isaev, M. Y., Nuhrenberg, J., Mikhailov, M. I., Cooper, W. A., Watanabe, K. Y., Yokoyama, M., ...

An approximation to a quasi-omnigenous structure of the magnetic field strength has been numerically obtained by optimization of the magnetic configuration of a conventional heliotron/torsatron. This...

Nonequilibrium Antiferromagnetic State in the Heavy Electron Compound URu_2Si_2 (2002)

Yokoyama, M., Nozaki, J., Amitsuka, H., Watanabe, K., Kawarazaki, S., Yoshizawa, H., ...

We have investigated the nature of the antiferromagnetic (AF) phase induced by uniaxial stress sigma in URu2Si2, by performing elastic neutron scattering measurements up to 0.4 GPa. We have found...

Effects of Uniaxial Stress on Antiferromagnetic Moment in the Heavy Electron Compound URu_2Si_2 (2001)

Yokoyama, M., Amitsuka, H., Watanabe, K., Kawarazaki, S., Yoshizawa, H., Mydosh, J. A.

We have performed the elastic neutron scattering experiments under uniaxial stress \sigma along the tetragonal [100], [110] and [001] directions for URu2Si2. For \sigma // [100] and [110], the...

Configuration flexibility and extended regimes in Large Helical Device (2001)

Yamada, H., Komori, A., Ohyabu, N., Kaneko, O., Kawahata, K., Watanabe, K. Y., ...

Recent experimental results in the Large Helical Device have indicated that a large pressure gradient can be formed beyond the stability criterion for the Mercier (high-n) mode. While the stability...

MHD characteristics in the high beta regime of the Large Helical Device (2001)

Sakakibara, S., Yamada, H., Watanabe, K., Narushima, Y., Toi, K., Ohdachi, S., ...

The highest volume averaged beta values beta (t) of 2.2% at B-t = 0.75 T (gas puff) and 2.4% at D-t = 1.3 T (pellet) in helical devices have been achieved in LHD. The beta (t) dependence of MHD...

Frequency and clinical characteristics of dilated cardiomyopathy caused by desmin gene mutation in a Japanese population (2001)

Miyamoto, Y., Akita, H., Shiga, N., Takai, E., Iwai, C., Mizutani, K., ...

Aims Dilated cardiomyopathy is partly caused by a mutation of some cytoskeletal or nuclear envelope proteins. It has been confirmed recently that a missense mutation of the gene encoding desmin, a...

Haemodynamic effects of the lateral decubitus position and the kidney rest lateral decubitus position during anaesthesia (2000)

Yokoyama, M., Ueda, W., Hirakawa, M.

We measured the haemodynamic effects of changing from the supine position to the lateral decubitus (lateral) position, and then to the kidney rest lateral decubitus (kidney) position in 12 patients...

Effect of Pressure on Tiny Antiferromagnetic Moment in the Heavy-Electron Compound URu_2Si_2 (1999)

Amitsuka, H., Sato, M., Metoki, N., Yokoyama, M., Kuwahara, K., Sakakibara, T., ...

We have performed elastic neutron-scattering experiments on the heavy-electron compound URu_2Si_2 for pressure P up to 2.8 GPa. We have found that the antiferrmagnetic (100) Bragg reflection below...

RESEARCH STUDIES OF HIGH-DENSITY PLASMAS. (1998)

Slama, L., Yokoyama, M., George, T.V., Hirsch, R., Dreyer, L.

Laser beam scattering experiments were continued. Scattering from various neutral gases was meas ured as a preliminary study of the scattering by the high-density plasma. Angular dependence of the...

Development of Texture-Controlled Bulk-Materials by Combing Rapid-Solidified Fiber/Ribbon Material Elements with Spark Plasma Sintering(SPS) (1998)

Furuya, Y., Yokoyama, M., Saito, C., Okazaki, T., Omori, M.

It has been shown that rapid-solidified (RS) melt-spun fiber/ribbon/foil samples can have very high performance of the metallic actuator/sensor properties. However, as for the applications of these...

A Graphitic Carbon Nitride. (1998)

Sekine, T., Kanda, H., Bando, Y., Yokoyama, M., Hojou, K.

Since the solubility of nitrogen in crystalline carbon phases such as graphite and diamond is very restricted, the nitrogen content in natural diamonds is very small (

Influence of Small Impurities on Low-Energy Electron Dynamics in Two-Dimensional Microscopic Bounded Region (1998)

Shigehara, T., Yokoyama, M., Mizoguchi, H., Mishima, T., Cheon, Taksu

In order to give some insight into a role of small impurities on the electron motion in microscopic devices, we examine from a general viewpoint, the effect of small obstacles on a particle motion at...

Ferric Substance Formed in Water Circulating in Boilers and Steam Piping, and an Apparatus for Magnetic Treating it (1997)

Ishibashi, S., Sato, T., Yokoyama, M., Haneda, K., Kato, Y.

Substances in side the boilers and pipes become attached as scale or precipitate, and these badly effect the thermal efficiency of the steam. We made a detailed investigation, particularly on the...

Size Dependent Magnetic Properties of Zinc Ferrite Fine Particles (1997)

Yokoyama, M., Ohta, E., Sato, T., Komaba, T., Sato, T.

We investigate the particle size dependence of magnetic properties of ZnFe2O4 fine particles. The fine particles with different particle sizes were obtained by heating the coprecipitated powder. The...

Ferric Substance Formed in Water Circulating in Boilers and Steam Piping, and an Apparatus for Magnetic Treating it (1997)

Ishibashi, S., Sato, T., Yokoyama, M., Haneda, K., Kato, Y.

Substances in side the boilers and pipes become attached as scale or precipitate, and these badly effect the thermal efficiency of the steam. We made a detailed investigation, particularly on the...

Size Dependent Magnetic Properties of Zinc Ferrite Fine Particles (1997)

Yokoyama, M., Ohta, E., Sato, T., Komaba, T., Sato, T.

We investigate the particle size dependence of magnetic properties of ZnFe2O4 fine particles. The fine particles with different particle sizes were obtained by heating the coprecipitated powder. The...

Ferric Substance Formed in Water Circulating in Boilers and Steam Piping, and an Apparatus for Magnetic Treating it (1997)

Ishibashi, S., Sato, T., Yokoyama, M., Haneda, K., Kato, Y.

Substances in side the boilers and pipes become attached as scale or precipitate, and these badly effect the thermal efficiency of the steam. We made a detailed investigation, particularly on the...

Size Dependent Magnetic Properties of Zinc Ferrite Fine Particles (1997)

Yokoyama, M., Ohta, E., Sato, T., Komaba, T., Sato, T.

We investigate the particle size dependence of magnetic properties of ZnFe2O4 fine particles. The fine particles with different particle sizes were obtained by heating the coprecipitated powder. The...

The role of cardiac output response in blood flow distribution during exercise in patients with chronic heart failure (1995)

YAMABE, H., ITOH, K., YASAKA, Y., TAKATA, T., YOKOYAMA, M.

The relationship between blood flow in the working leg and cardiac output (Q) response was determined for patients with chronic heart failure. The ratio of leg blood flow (LBF) to Q (LBFIQ) at the...

Myocardial ischaemia induced by endothelin in the intact rabbit: angiographic analysis (1990)

Hirata, Ken-ichi, Matsuda, Yuichi, Akita, H, Yokoyama, M, Fukuzaki, H

Study objective – The aim was to clarify the effects of endothelin on coronary vasculature in the intact rabbit by coronary angiographic examination. Design – By selective coronary angiography...

Effects of Benzyladenine on Chlorophyll, DNA, RNA and Protein Content of Attached Young Bean (Phaseolus vulgaris L.) Leaves (1980)

YOKOYAMA, M., NAITO, K., SUZUKI, H.

N6-Benzyladenine (BA) was applied to intact bean (Phaseolus vulgaris L.) primary leaves at 2 and 6 days after imbibition, when they were in the cell division and post-cell division stages,...

Regulation of topographic projection in the brain: Elf-1 in the hippocamposeptal system.

Gao, P P, Zhang, J H, Yokoyama, M, Racey, B, Dreyfus, C F, Black, I B, ...

The hippocampus and septum play central roles in one of the most important spheres of brain function: learning and memory. Although their topographic connections have been known for two decades and...

Depolarizing stimuli regulate nerve growth factor gene expression in cultured hippocampal neurons.

Lu, B, Yokoyama, M, Dreyfus, C F, Black, I B

Although trophic factors and neuronal activity have been implicated in regulating functional synaptic circuits, the relationship of trophic interaction to impulse activity in synaptogenesis remains...

DNA immunization confers protection against lethal lymphocytic choriomeningitis virus infection.

Yokoyama, M, Zhang, J, Whitton, J L

DNA vaccination has been evaluated with the lymphocytic choriomeningitis virus (LCMV) model system. Plasmid DNA encoding the LCMV nucleoprotein, when injected intramuscularly, induces both antiviral...

CD4-deficient mice have reduced levels of memory cytotoxic T lymphocytes after immunization and show diminished resistance to subsequent virus challenge.

Von Herrath, M G, Yokoyama, M, Dockter, J, Oldstone, M B, Whitton, J L

Although primary antiviral CD8+ cytotoxic T lymphocytes (CTL) can be induced in mice depleted of CD4+ T cells, the role of CD4+ T lymphocytes in the generation and maintenance of antiviral memory CTL...

Restoration of myelin formation by a single type of myelin basic protein in transgenic shiverer mice.

Kimura, M, Sato, M, Akatsuka, A, Nozawa-Kimura, S, Takahashi, R, Yokoyama, M, ...

A minigene containing mouse cDNA coding for the smallest type of myelin basic protein and including the native promoter was constructed and used to produce transgenic shiverer mice. The...

Regulation of fructose-6-phosphate 2-kinase by phosphorylation and dephosphorylation: possible mechanism for coordinated control of glycolysis and glycogenolysis.

Furuya, E, Yokoyama, M, Uyeda, K

The kinetic properties and the control mechanism of fructose-6-phosphate 2-kinase (ATP: D-fructose-6-phosphate 2-phosphotransferase) were investigated. The molecular weight of the enzyme is...

Pulmonary alveolar proteinosis: diagnosis using routinely processed smears of bronchoalveolar lavage fluid.

Mikami, T, Yamamoto, Y, Yokoyama, M, Okayasu, I

AIMS: For the diagnosis of pulmonary alveolar proteinosis from bronchoalveolar lavage specimens it is normally necessary to make an ultrastructural examination. However, this is thought to be...

Disruption of the splicing enhancer sequence within exon 27 of the dystrophin gene by a nonsense mutation induces partial skipping of the exon and is responsible for Becker muscular dystrophy.

Shiga, N, Takeshima, Y, Sakamoto, H, Inoue, K, Yokota, Y, Yokoyama, M, ...

The mechanism of exon skipping induced by nonsense mutations has not been well elucidated. We now report results of in vitro splicing studies which disclosed that a particular example of exon...

Hypotension and reduced nitric oxide-elicited vasorelaxation in transgenic mice overexpressing endothelial nitric oxide synthase.

Ohashi, Y, Kawashima, S, Hirata, K I, Yamashita, T, Ishida, T, Inoue, N, ...

Nitric oxide (NO), constitutively produced by endothelial nitric oxide synthase (eNOS), plays a major role in the regulation of blood pressure and vascular tone. We generated transgenic mice...

Human renin in transgenic mouse kidney is localized to juxtaglomerular cells.

Fukamizu, A, Hatae, T, Kon, Y, Sugimura, M, Hasegawa, T, Yokoyama, M, ...

To examine whether expression of human renin in the transgenic mouse kidney is regulated in a cell-specific manner, we have characterized monoclonal antibodies against human renin and determined the...

Regulation of topographic projection in the brain: Elf-1 in the hippocamposeptal system.

Gao, P P, Zhang, J H, Yokoyama, M, Racey, B, Dreyfus, C F, Black, I B, ...

The hippocampus and septum play central roles in one of the most important spheres of brain function: learning and memory. Although their topographic connections have been known for two decades and...

Depolarizing stimuli regulate nerve growth factor gene expression in cultured hippocampal neurons.

Lu, B, Yokoyama, M, Dreyfus, C F, Black, I B

Although trophic factors and neuronal activity have been implicated in regulating functional synaptic circuits, the relationship of trophic interaction to impulse activity in synaptogenesis remains...

DNA immunization confers protection against lethal lymphocytic choriomeningitis virus infection.

Yokoyama, M, Zhang, J, Whitton, J L

DNA vaccination has been evaluated with the lymphocytic choriomeningitis virus (LCMV) model system. Plasmid DNA encoding the LCMV nucleoprotein, when injected intramuscularly, induces both antiviral...

CD4-deficient mice have reduced levels of memory cytotoxic T lymphocytes after immunization and show diminished resistance to subsequent virus challenge.

Von Herrath, M G, Yokoyama, M, Dockter, J, Oldstone, M B, Whitton, J L

Although primary antiviral CD8+ cytotoxic T lymphocytes (CTL) can be induced in mice depleted of CD4+ T cells, the role of CD4+ T lymphocytes in the generation and maintenance of antiviral memory CTL...

Restoration of myelin formation by a single type of myelin basic protein in transgenic shiverer mice.

Kimura, M, Sato, M, Akatsuka, A, Nozawa-Kimura, S, Takahashi, R, Yokoyama, M, ...

A minigene containing mouse cDNA coding for the smallest type of myelin basic protein and including the native promoter was constructed and used to produce transgenic shiverer mice. The...

Regulation of fructose-6-phosphate 2-kinase by phosphorylation and dephosphorylation: possible mechanism for coordinated control of glycolysis and glycogenolysis.

Furuya, E, Yokoyama, M, Uyeda, K

The kinetic properties and the control mechanism of fructose-6-phosphate 2-kinase (ATP: D-fructose-6-phosphate 2-phosphotransferase) were investigated. The molecular weight of the enzyme is...

Pulmonary alveolar proteinosis: diagnosis using routinely processed smears of bronchoalveolar lavage fluid.

Mikami, T, Yamamoto, Y, Yokoyama, M, Okayasu, I

AIMS: For the diagnosis of pulmonary alveolar proteinosis from bronchoalveolar lavage specimens it is normally necessary to make an ultrastructural examination. However, this is thought to be...

Disruption of the splicing enhancer sequence within exon 27 of the dystrophin gene by a nonsense mutation induces partial skipping of the exon and is responsible for Becker muscular dystrophy.

Shiga, N, Takeshima, Y, Sakamoto, H, Inoue, K, Yokota, Y, Yokoyama, M, ...

The mechanism of exon skipping induced by nonsense mutations has not been well elucidated. We now report results of in vitro splicing studies which disclosed that a particular example of exon...

Hypotension and reduced nitric oxide-elicited vasorelaxation in transgenic mice overexpressing endothelial nitric oxide synthase.

Ohashi, Y, Kawashima, S, Hirata, K I, Yamashita, T, Ishida, T, Inoue, N, ...

Nitric oxide (NO), constitutively produced by endothelial nitric oxide synthase (eNOS), plays a major role in the regulation of blood pressure and vascular tone. We generated transgenic mice...

Human renin in transgenic mouse kidney is localized to juxtaglomerular cells.

Fukamizu, A, Hatae, T, Kon, Y, Sugimura, M, Hasegawa, T, Yokoyama, M, ...

To examine whether expression of human renin in the transgenic mouse kidney is regulated in a cell-specific manner, we have characterized monoclonal antibodies against human renin and determined the...

Down-regulation of KOLT-2 antigen (CD28) by interleukin-2: role of IL-2R(p70)

Shindo, T., Sugie, K., Nakamura, K., Tagaya, Y., Maeda, M., Uchiyama, T., ...

Using KOLT-2 monoclonal antibody (mAb) recognizing a 44,000 molecular weight (MW) T-cell activation antigen (CD28), we observed the co-expression of KOLT-2 (CD28) antigen and Tac (CD25) antigen,...

T lymphocytes emigrating from the thymus to the spleen during postpartum regulate serum immunoglobulin levels in mice.

Yokoyama, M, Koga, Y, Taniguchi, K, Nakano, H, Nomoto, K

We noted an increase of a splenic T-cell population in early postpartum normal mice, but not in thymectomized (Tx) postpartum mice. The T-cell population consisted mainly of Lyt-1+2- cells and...

Endothelial constitutive nitric oxide synthase protein and mRNA increased in rabbit atherosclerotic aorta despite impaired endothelium-dependent vascular relaxation.

Kanazawa, K., Kawashima, S., Mikami, S., Miwa, Y., Hirata, K., Suematsu, M., ...

Atherosclerotic arteries are well known to exhibit impaired endothelium-dependent relaxation (EDR), but the exact mechanism of this impairment remains unclear. Recently, endothelial constitutive...

Development of a novel rat mutant with spontaneous limbic-like seizures.

Amano, S., Ihara, N., Uemura, S., Yokoyama, M., Ikeda, M., Serikawa, T., ...

A new epileptic rat mutant with spontaneous seizures was developed by successive mating and selection from an inherited cataract rat. The procedures for developing the mutant and the symptomatology,...

Fatal antral ulcer in conventionally fed W/Wv mutant mice given indomethacin by injection.

Yokoyama, M., Tomoi, M., Taguchi, T., Nakano, T., Asai, H., Ono, T., ...

Antral ulcers develop spontaneously in (WB X C57BL/6)F1-W/Wv mice. Most W/Wv mice with severe ulcers die within 3 months after birth. When healthy-looking W/Wv mice were selected at 4 months of age,...

Higher Susceptibility of Mast-Cell-Deficient W/WV Mutant Mice to Brain Thromboembolism and Mortality Caused by Intravenous Injection of India Ink

Kitamura, Y., Taguchi, T., Yokoyama, M., Inoue, M., Yamatodani, A., Asano, H., ...

(WB × C57BL/6)F1-W/Wv mice possess a genetic defect in multipotential hematopoietic stem cells; the mice are anemic and lack mast cells. The authors injected diluted India ink intravenously into...

Platelet reactivity and its dependence on alpha-adrenergic receptor function in patients with ischaemic heart disease.

Yokoyama, M, Kawashima, S, Sakamoto, S, Akita, H, Okada, T, Mizutani, T, ...

We studied 57 patients admitted to hospital with ischaemic heart disease, including nine patients with variant angina, to evaluate platelet reactivity and its dependence on alpha-adrenergic receptor...

Heterogeneity and time course of improvement in cardiac function after cardioversion of chronic atrial fibrillation: assessment of serial echocardiographic indices.

Shite, J, Yokota, Y, Yokoyama, M

OBJECTIVE--To assess the clinical characteristics of patients in whom cardiac function improved after cardioversion of atrial fibrillation and the time course of the improvement. DESIGN--A...

Auto-oxidative damage in Behçet's disease--endothelial cell damage following the elevated oxygen radicals generated by stimulated neutrophils.

Niwa, Y, Miyake, S, Sakane, T, Shingu, M, Yokoyama, M

The functions of phagocytes are enhanced in patients with Behçet's disease, therefore, we investigated the neutrophil-derived oxygen intermediates (OI) and lysosomal enzymes from 17 patients...

Atypical IgA with hidden light chain

Hashimoto, N., Chandor, S., Mandy, W., Yokoyama, M.

A 64-year-old Caucasian male was examined following complaints of persistent malaise and fatigue. Electrophoretic analysis of the patient's serum revealed a paraprotein spike which was initially...

A novel point mutation (G-1 to T) in a 5' splice donor site of intron 13 of the dystrophin gene results in exon skipping and is responsible for Becker muscular dystrophy.

Hagiwara, Y., Nishio, H., Kitoh, Y., Takeshima, Y., Narita, N., Wada, H., ...

The mutations in one-third of Duchenne and Becker muscular dystrophy patients remain unknown, as they do not involve gross rearrangements of the dystrophin gene. We now report a defect in the...

The calcium-independent protein kinase C participates in an early process of CD3/CD28-mediated induction of thymocyte apoptosis

Asada, A, Zhao, Y, Komano, H, Kuwata, T, Mukai, M, Fujita, K, ...

Thymocyte negative selection eliminates self-reactive clones and involves both a T-cell receptor (TCR)/CD3-mediated signal and a costimulatory signal, which can be delivered via CD28....

Two independent pathways of maternal cell transmission to offspring: through placenta during pregnancy and by breast-feeding after birth

Zhou, L, Yoshimura, Y, Huang, Y-Y, Suzuki, R, Yokoyama, M, Okabe, M, ...

Cell transmission from mother to offspring was demonstrated using mice with green fluorescent protein (GFP) transgenic markers. GFP transgene heterozygous (+/−) females were mated with GFP...

Induction of p16 during immortalization by HPV 16 and 18 and not during malignant transformation.

Nakao, Y., Yang, X., Yokoyama, M., Ferenczy, A., Tang, S. C., Pater, M. M., ...

The p16 (MTS1) tumour-suppressor gene is a cyclin-dependent kinase (cdk) inhibitor that decelerates the cell cycle by inactivating the cdks that phosphorylate the retinoblastoma tumour-suppressor...

NK105, a paclitaxel-incorporating micellar nanoparticle formulation, can extend in vivo antitumour activity and reduce the neurotoxicity of paclitaxel

Hamaguchi, T, Matsumura, Y, Suzuki, M, Shimizu, K, Goda, R, Nakamura, I, ...

Paclitaxel (PTX) is one of the most effective anticancer agents. In clinical practice, however, high incidences of adverse reactions of the drug, for example, neurotoxicity, myelosuppression, and...