Classical Simulation of Quantum Fields II (2005)
Hirayama, T., Holdom, B., Koniuk, R., Yavin, T.
We consider the classical time evolution of a real scalar field in 2 dimensional Minkowski space with a $\lambda \phi^4$ interaction. We compute the spatial and temporal two-point correlation...
Classical Simulation of Quantum Fields I (2005)
We study classical field theories in a background field configuration where all modes of the theory are excited, matching the zero-point energy spectrum of quantum field theory. Our construction...
Akihiro, I, Ohmori, S, Hirayama, T, Tanaka, K, Ando, N, Tasaki, S, ...
Fluctuations, Ghosts, and the Cosmological Constant (2004)
For a large region of parameter space involving the cosmological constant and mass parameters, we discuss fluctuating spacetime solutions that are effectively Minkowskian on large time and distance...
Harada, H., Kuromori, T., Hirayama, T., Shinozaki, K., Leigh, Roger Allen
Storage of excess nitrate in the vacuole and its subsequent remobilization is an important aspect of a plant’s nitrogen economy, but the genes controlling the underlying processes have not all been...
Harada, H., Kuromori, T., Hirayama, T., Shinozaki, K., Leigh, Roger Allen
Storage of excess nitrate in the vacuole and its subsequent remobilization is an important aspect of a plant’s nitrogen economy, but the genes controlling the underlying processes have not all been...
Can black holes have Euclidean cores? (2003)
The search for regular black hole solutions in classical gravity leads us to consider a core of Euclidean signature in the interior of a black hole. Solutions of Lorentzian and Euclidean general...
Osteoclast formation from circulating precursors in osteoporosis (2003)
Jevon, M, Hirayama, T, Brown, MA, Wass, JAH, Sabokbar, A, Ostelere, S, ...
Objective: An imbalance between bone formation and bone resorption is thought to underlie the pathogenesis of reduced bone mass in osteoporosis. Bone resorption is carried out by osteoclasts, which...
Osteoclast formation from circulating precursors in osteoporosis (2003)
Jevon, M, Hirayama, T, Brown, MA, Wass, JAH, Sabokbar, A, Ostelere, S, ...
Objective: An imbalance between bone formation and bone resorption is thought to underlie the pathogenesis of reduced bone mass in osteoporosis. Bone resorption is carried out by osteoclasts, which...
Motion planning for mobile manipulator with keeping manipulability (2002)
Nagatani, K., Hirayama, T., Gofuku, A., Tanaka, Y.
Our research goal is to realize a motion planning for an intelligent mobile manipulator. To plan a mobile manipulator's motion, it is popular that the base robot motion is regarded as manipulator's...
Effects of Fresnel Corrections for Phase-Shifting Electron Holography (2002)
Yamamoto, K., Hirayama, T., Tanji, T., Hibino, M.
Microscopy and Microanalysis. v.8, (supple S2), 2002, p.24-25
Osteoclast formation and activity in the pathogenesis of osteoporosis in rheumatoid arthritis (2002)
Hirayama, T., Danks, L., Sabokbar, A., Athanasou, N. A.
Objective. Rheumatoid arthritis (RA) is often complicated by generalized osteopenia due to increased bone resorption by osteoclasts. We analysed a number of cellular and humoral factors that...
Osteoclast formation and activity in the pathogenesis of osteoporosis in rheumatoid arthritis (2002)
Hirayama, T., Danks, L., Sabokbar, A., Athanasou, N. A.
Objective. Rheumatoid arthritis (RA) is often complicated by generalized osteopenia due to increased bone resorption by osteoclasts. We analysed a number of cellular and humoral factors...
Bound and Radiation Fields in the Rindler Frame (2001)
The energy-momentum tensor of the Li\'enard-Wiechert field is split into bound and emitted parts in the Rindler frame, by generalizing the reasoning of Teitelboim applied in the inertial frame. Our...
Epitaxial growth of REBa2Cu3O7-y films on various substrates by chemical solution deposition (2001)
Yamagiwa, K, Araki, T, Takahashi, Y, Hiei, H, Kim, SB, Matsumoto, K, ...
Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12 (2000)
Lee, C. H., Matsuhata, H., Yamamoto, A., Ohta, T., Takazawa, H., Ueno, K., ...
A structural phase transition has been found using electron diffraction technique in PrRu4P12 accompanied by a metal - insulator (M - I) transition (TMI = 60K). Weak superlattice spots appeared at...
A Calculation on the Self-field of a Point Charge and the Unruh Effect (1999)
Within the context of quantum field theory in curved spacetimes, Hacyan and Sarmiento defined the vacuum stress-energy tensor with respect to the accelerated observer. They calculated it for uniform...
Ma, X. L., Yamagiwa, K., Shibata, J., Hirayama, T., Hirabayashi, I., Ikuhara, Y.
Thin superconducting films of the YbBa2Cu3O7−y (Yb 123) and YbBa2Cu3O7−y (Y123), prepared by post-deposition annealing of the metal naphthenates gels spin-coated on MgO(001) substrate, have been...
Low-Temperature Conductivity of ZnO Films Prepared by Chemical Vapor Deposition. (1998)
Natsume, Y., Sakata, H., Hirayama, T., Yanagida, H.
C-axis-oriented ZnO films were prepared in O2 atmosphere by chemical vapor deposition using zinc acetylacetonate for source material. A minimum value of resistivity, 2.44 ohm cm, was obtained at a...
A Model with Simultaneous Dynamical Breaking of Supersymmetry and GUT Gauge Symmetry (1998)
Hirayama, T., Ishimura, N., Maekawa, N.
We try to construct a model in which supersymmetry and grand unified gauge symmetry are dynamically broken at the same time. In this model SUSY breaking is mediated mainly by massive vector...
Self-Sustained Oscillation of Gas-Liquid Flow in a Centrifugal Pump with Semi-Open Impeller (1996)
Kurokawa, Junichi, Matsui, J., Takada, H., Hirayama, T., 黒川, 淳一, クロカワ, ジュンイチ, ...
Mizoguchi, T, Irie, K, Hirayama, T, Hayashida, N, Yamaguchi-Shinozaki, K, Matsumoto, K, ...
We describe here the cloning and characterization of a cDNA encoding a protein kinase that has high sequence homology to members of the mitogen-activated protein kinase (MAPK) kinase kinase (MAPKKK...
Hirayama, T, Ohto, C, Mizoguchi, T, Shinozaki, K
A cDNA corresponding to a putative phosphatidylinositol-specific phospholipase C (PI-PLC) in the higher plant Arabidopsis thaliana was cloned by use of the polymerase chain reaction. The cDNA,...
A transmembrane hybrid-type histidine kinase in Arabidopsis functions as an osmosensor.
Urao, T, Yakubov, B, Satoh, R, Yamaguchi-Shinozaki, K, Seki, M, Hirayama, T, ...
Water deficit and the resulting osmotic stress affect plant growth. To understand how plant cells monitor and respond to osmotic change from water stress, we isolated a cDNA from dehydrated...
Takemura, H, Kaku, M, Kohno, S, Hirakata, Y, Tanaka, H, Yoshida, R, ...
Defensins are small cationic bactericidal peptides present abundantly in the granules of polymorphonuclear neutrophils (PMNs). Human PMNs contain four defensins termed HNP-1 to HNP-4. We used a new...
Ichinose, Y, Tsuji, T, Kato, M, Neves, B C, Morita, K, Ehara, M, ...
Vibrio cholerae O1, No. 31, a strain isolated from a patient with mild diarrhea, produced mainly the unnicked cholera toxin. The amount of toxin that had accumulated in the cells was approximately...
Wada, A, Hirayama, T, Kitaura, H, Fujisawa, J, Hasegawa, M, Hidaka, Y, ...
Guanylyl cyclase C (STaR), a receptor protein for heat-stable enterotoxin (STa) elaborated by Escherichia coli, is associated with and spans the plasma membrane of mammalian intestinal cells. The...
Oishi, K, Sar, B, Wada, A, Hidaka, Y, Matsumoto, S, Amano, H, ...
Persistent infection with Pseudomonas aeruginosa increases interleukin-8 (IL-8) levels and causes dense neutrophil infiltrations in the airway of patients with chronic airway diseases. To investigate...
Hirayama, T, Wada, A, Iwata, N, Takasaki, S, Shimonishi, Y, Takeda, Y
Glycoprotein receptors for heat-stable enterotoxin STh of enterotoxigenic Escherichia coli in the rat intestinal cell membrane were identified and characterized. Incubation of rat intestinal cell...
Binding of pseudomonal leukocidin to rabbit polymorphonuclear leukocytes.
Hirayama, T, Noda, M, Matsuda, F, Nagamori, M, Kato, I
The leukocytotoxic toxin pseudomonal leukocidin, produced by Pseudomonas aeruginosa, was radioiodinated with chloramine-T reagent. Binding of [125I]leukocidin to rabbit polymorphonuclear leukocytes...
Noda, M, Hirayama, T, Matsuda, F, Kato, I
On incubation of rabbit polymorphonuclear leukocytes with the S component of staphylococcal leukocidin at 37 degrees C, the 3H-labeled methyl group of S-adenosyl[methyl-3H]methionine was rapidly...
The cytotoxic action of leukocidin from Pseudomonas aeruginosa was supported by the following observations. (i) The destruction of rabbit leukocytes by the toxin was reduced in the absence of Ca2+...
Homma, J Y, Matsuura, M, Shibata, M, Kazuyama, Y, Yamamoto, M, Kubota, Y, ...
The ratio of leukocidin-producing strains to clinical isolates of Pseudomonas aeruginosa was investigated together with the production of protease, elastase, and exotoxin A. We also examined whether...
Shirai, H, Ito, H, Hirayama, T, Nakamoto, Y, Nakabayashi, N, Kumagai, K, ...
The Kanagawa phenomenon induced by the thermostable direct hemolysin (TDH) of Vibrio parahaemolyticus is almost exclusively associated with clinical strains, and TDH has been considered an important...
Noda, M, Kato, I, Hirayama, T, Matsuda, F
The cytotoxic action of the S component of leukocidin from Staphylococcus aureus on rabbit polymorphonuclear leukocytes was supported by the following observations, (i) Leukocytes displayed a large...
Non-smoking wives of heavy smokers have a higher risk of lung cancer: a study from Japan.
In a study in 29 health centre districts in Japan 91 540 non-smoking wives aged 40 and above were followed up for 14 years (1966-79), and standardised mortality rates for lung cancer were assessed...
Quantification of two aromatic amine mutagens, PBTA-1 and PBTA-2, in the yodo river system.
Ohe, T, Takeuchi, N, Watanabe, T, Tada, A, Nukaya, H, Terao, Y, ...
The levels of two aromatic amine mutagens, 2-[2-(acetylamino)-4-[bis(2-methoxyethyl)amino]-5-methoxyphenyl]-5-am ino-7-bromo-4-chloro-2H-benzotriazole (PBTA-1) and...
In 1965 a cohort of 265,000 residents of 29 public health districts in six prefectures throughout Japan was established and followed between 1966 and 1981. By using survival analysis based on Poisson...
Patterns, change in occurrence, causative risk factors, and control strategy for cancer of each site in Japanese populations were studied by applying standard methods and techniques of biostatistics...
Mizoguchi, T, Irie, K, Hirayama, T, Hayashida, N, Yamaguchi-Shinozaki, K, Matsumoto, K, ...
We describe here the cloning and characterization of a cDNA encoding a protein kinase that has high sequence homology to members of the mitogen-activated protein kinase (MAPK) kinase kinase (MAPKKK...
Hirayama, T, Ohto, C, Mizoguchi, T, Shinozaki, K
A cDNA corresponding to a putative phosphatidylinositol-specific phospholipase C (PI-PLC) in the higher plant Arabidopsis thaliana was cloned by use of the polymerase chain reaction. The cDNA,...
A transmembrane hybrid-type histidine kinase in Arabidopsis functions as an osmosensor.
Urao, T, Yakubov, B, Satoh, R, Yamaguchi-Shinozaki, K, Seki, M, Hirayama, T, ...
Water deficit and the resulting osmotic stress affect plant growth. To understand how plant cells monitor and respond to osmotic change from water stress, we isolated a cDNA from dehydrated...
Takemura, H, Kaku, M, Kohno, S, Hirakata, Y, Tanaka, H, Yoshida, R, ...
Defensins are small cationic bactericidal peptides present abundantly in the granules of polymorphonuclear neutrophils (PMNs). Human PMNs contain four defensins termed HNP-1 to HNP-4. We used a new...
Ichinose, Y, Tsuji, T, Kato, M, Neves, B C, Morita, K, Ehara, M, ...
Vibrio cholerae O1, No. 31, a strain isolated from a patient with mild diarrhea, produced mainly the unnicked cholera toxin. The amount of toxin that had accumulated in the cells was approximately...
Wada, A, Hirayama, T, Kitaura, H, Fujisawa, J, Hasegawa, M, Hidaka, Y, ...
Guanylyl cyclase C (STaR), a receptor protein for heat-stable enterotoxin (STa) elaborated by Escherichia coli, is associated with and spans the plasma membrane of mammalian intestinal cells. The...
Oishi, K, Sar, B, Wada, A, Hidaka, Y, Matsumoto, S, Amano, H, ...
Persistent infection with Pseudomonas aeruginosa increases interleukin-8 (IL-8) levels and causes dense neutrophil infiltrations in the airway of patients with chronic airway diseases. To investigate...
Hirayama, T, Wada, A, Iwata, N, Takasaki, S, Shimonishi, Y, Takeda, Y
Glycoprotein receptors for heat-stable enterotoxin STh of enterotoxigenic Escherichia coli in the rat intestinal cell membrane were identified and characterized. Incubation of rat intestinal cell...
Binding of pseudomonal leukocidin to rabbit polymorphonuclear leukocytes.
Hirayama, T, Noda, M, Matsuda, F, Nagamori, M, Kato, I
The leukocytotoxic toxin pseudomonal leukocidin, produced by Pseudomonas aeruginosa, was radioiodinated with chloramine-T reagent. Binding of [125I]leukocidin to rabbit polymorphonuclear leukocytes...
Noda, M, Hirayama, T, Matsuda, F, Kato, I
On incubation of rabbit polymorphonuclear leukocytes with the S component of staphylococcal leukocidin at 37 degrees C, the 3H-labeled methyl group of S-adenosyl[methyl-3H]methionine was rapidly...
The cytotoxic action of leukocidin from Pseudomonas aeruginosa was supported by the following observations. (i) The destruction of rabbit leukocytes by the toxin was reduced in the absence of Ca2+...
Homma, J Y, Matsuura, M, Shibata, M, Kazuyama, Y, Yamamoto, M, Kubota, Y, ...
The ratio of leukocidin-producing strains to clinical isolates of Pseudomonas aeruginosa was investigated together with the production of protease, elastase, and exotoxin A. We also examined whether...
Shirai, H, Ito, H, Hirayama, T, Nakamoto, Y, Nakabayashi, N, Kumagai, K, ...
The Kanagawa phenomenon induced by the thermostable direct hemolysin (TDH) of Vibrio parahaemolyticus is almost exclusively associated with clinical strains, and TDH has been considered an important...
Noda, M, Kato, I, Hirayama, T, Matsuda, F
The cytotoxic action of the S component of leukocidin from Staphylococcus aureus on rabbit polymorphonuclear leukocytes was supported by the following observations, (i) Leukocytes displayed a large...
Non-smoking wives of heavy smokers have a higher risk of lung cancer: a study from Japan.
In a study in 29 health centre districts in Japan 91 540 non-smoking wives aged 40 and above were followed up for 14 years (1966-79), and standardised mortality rates for lung cancer were assessed...
Quantification of two aromatic amine mutagens, PBTA-1 and PBTA-2, in the yodo river system.
Ohe, T, Takeuchi, N, Watanabe, T, Tada, A, Nukaya, H, Terao, Y, ...
The levels of two aromatic amine mutagens, 2-[2-(acetylamino)-4-[bis(2-methoxyethyl)amino]-5-methoxyphenyl]-5-am ino-7-bromo-4-chloro-2H-benzotriazole (PBTA-1) and...
In 1965 a cohort of 265,000 residents of 29 public health districts in six prefectures throughout Japan was established and followed between 1966 and 1981. By using survival analysis based on Poisson...
Patterns, change in occurrence, causative risk factors, and control strategy for cancer of each site in Japanese populations were studied by applying standard methods and techniques of biostatistics...
Hamanaka, Y, Nakashima, M, Wada, A, Ito, M, Kurazono, H, Hojo, H, ...
BACKGROUND—Human β-defensin 2 (hBD-2) plays a role in the innate defence system at mucosal surfaces. Colonisation of Helicobacter pylori in the stomach is an important pathological factor in...
YAMAGUCHI, T, IWANO, M, KUBO, A, HIRAYAMA, T, AKAI, Y, HORII, Y, ...
We measured levels of IL-6 mRNA in PBMC obtained from patients with chronic renal failure, using polymerase chain reaction (PCR), PBMC were isolated from 45 patients on haemodialysis (HD) at the...
Katayama, Y, Tsubokawa, T, Maejima, S, Hirayama, T, Yamamoto, T
The corticospinal direct (D) response to stimulation of the motor cortex exposed for intracranial surgery was recorded in 20 cases from wire electrodes inserted into the spinal epidural space. The D...