Stannylative cycloaddition of enynes catalyzed by palladium - Iminophosphine (2004)
Nakao, Y, Hirata, Y, Ishihara, S, Oda, S, Yukawa, T, Shirakawa, E, ...
Fractal Structure of 4D Euclidean Simplicial Manifold (2003)
Egawa, H. S., Horata, S., Yukawa, T.
The fractal properties of four-dimensional Euclidean simplicial manifold generated by the dynamical triangulation are analyzed on the geodesic distance D between two vertices instead of the usual...
Grand-Canonical simulation of 4D simplicial quantum gravity (2002)
Horata, S., Egawa, H. S., Yukawa, T.
A thorough numerical examination for the field theory of 4D quantum gravity (QG) with a special emphasis on the conformal mode dependence has been studied. More clearly than before, we obtain the...
Clear Evidence of a Continuum Theory of 4D Euclidean Simplicial Quantum Gravity (2001)
Egawa, H. S., Horata, S., Yukawa, T.
Four-dimensional (4D) simplicial quantum gravity coupled to both scalar fields (N_X) and gauge fields (N_A) has been studied using Monte-Carlo simulations. The matter dependence of the string...
Geometry of 4d Simplicial Quantum Gravity with a U(1) Gauge Field (2000)
Egawa, H. S., Horata, S., Yukawa, T.
The geometry of 4D simplicial quantum gravity with a U(1) gauge field is studied numerically. The phase diagram shows a continuous transition when gravity is coupled with a U(1) gauge field. At the...
Phase Structure of Four-dimensional Simplicial Quantum Gravity with a U(1) Gauge Field (2000)
Horata, S., Egawa, H. S., Tsuda, N., Yukawa, T.
The phase structure of four-dimensional simplicial quantum gravity coupled to U(1) gauge fields has been studied using Monte-Carlo simulations. The smooth phase is found in the intermediate region...
Introducing Dynamical Triangulations to the Type IIB Superstrings (1999)
In order to consider non-perturbative effects of superstrings, we try to apply dynamical triangulations to the type IIB superstrings. The discretized action is constructed from the type IIB matrix...
Phase Transition of 4D Simplicial Quantum Gravity with U(1) Gauge Field (1999)
Egawa, H. S., Horata, S., Tsuda, N., Yukawa, T.
The phase transition of 4D simplicial quantum gravity coupled to U(1) gauge fields is studied using Monte-Carlo simulations. The phase transition of the dynamical triangulation model with vector...
Type IIB Random Superstrings (1999)
We consider random superstrings of type IIB in $d$-dimensional space. The discretized action is constructed from the supersymetric matrix model, which has been proposed as a constructive definition...
Further Evidence of a Smooth Phase in 4D Simplicial Quantum Gravity (1998)
Egawa, H. S., Fujitsu, A., Horata, S., Tsuda, N., Yukawa, T.
Four-dimensional (4D) simplicial quantum gravity coupled to U(1) gauge fields has been studied using Monte-Carlo simulations. A negative string susceptibility exponent is observed beyond the...
Common Structures in Simplicial Quantum Gravity (1998)
Egawa, H. S., Tsuda, N., Yukawa, T.
The statistical properties of dynamically triangulated manifolds (DT mfds) in terms of the geodesic distance have been studied numerically. The string susceptibility exponents for the boundary...
Spontaneous Decoherence in Coupled Quantum Kicked Rotators (1997)
Quantum mechanical behavior of coupled N-kicked rotators is studied. In the large N limit each rotator evolves under influence of the mean-field generated by surrounding rotators. It is found that...
Two-Dimensional Dynamical Triangulation using the Grand-canonical Ensemble (1997)
Oda, S., Tsuda, N., Yukawa, T.
The string susceptibility exponents of dynamically triangulated two dimensional surfaces with sphere and torus topology were calculated using the grand-canonical Monte Carlo method. We also simulated...
Common Structures in 2,3 and 4D Simplicial Quantum Gravity (1997)
Egawa, H. S., Tsuda, N., Yukawa, T.
Two kinds of statistical properties of dynamical-triangulated manifolds (DT mfds) have been investigated. First, the surfaces appearing on the boundaries of 3D DT mfds were investigated. The...
Grand-canonical simulation of two-dimensional simplicial gravity (1997)
Oda, S., Tsuda, N., Yukawa, T.
The string susceptibility exponents of dynamically triangulated 2-dimensional surfaces with various topologies, such as a sphere, torus and double-torus, were calculated by the grand-canonical Monte...
Scaling Behavior in 4D Simplicial Quantum Gravity (1996)
Egawa, H. S., Hotta, T., Izubuchi, T., Tsuda, N., Yukawa, T.
Scaling relations in four-dimensional simplicial quantum gravity are proposed using the concept of the geodesic distance. Based on the analogy of a loop length distribution in the two-dimensional...
Complex structure of a DT surface with $T^2$ topology (1996)
Kawai, H., Tsuda, N., Yukawa, T.
A method of defining the complex structure(moduli) for dynamically triangulated(DT) surfaces with torus topology is proposed. Distribution of the moduli parameter is measured numerically and compared...
Scaling Structures in Four-dimensional Simplicial Gravity (1996)
Egawa, H. S., Hotta, T., Izubuchi, T., Tsuda, N., Yukawa, T.
Four-dimensional(4D) spacetime structures are investigated using the concept of the geodesic distance in the simplicial quantum gravity. On the analogy of the loop length distribution in 2D case, the...
Kawai, H., Tsuda, N., Yukawa, T.
Complex structures are determined for surfaces with $S^2$ and $T^2$ topologies generated by the dynamical triangulation method. For a surface with $S^2$ topology the spacial distribution of the...
2D Quantum Gravity -Three States of Surfaces- (1996)
Fujitsu, A., Tsuda, N., Yukawa, T.
Two-dimensional random surfaces are studied numerically by the dynamical triangulation method. In order to generate various kinds of random surfaces, two higher derivative terms are added to the...
The Complex Structure of 2D Surfaces (1995)
Kawai, H., Tsuda, N., Yukawa, T.
The complex structure of a surface generated by the two-dimensional dynamical triangulation(DT) is determined by measuring the resistivity of the surface. It is found that surfaces coupled to matter...
Ichinose, S., Tsuda, N., Yukawa, T.
We analyse MINBU distribution of 2 dimensional quantum gravity. New data of R$^2$-gravity by the Monte Carlo simulation and its theoretical analysis by the semiclassical approach are presented. The...
Finite Size Effects for the Ising Model Coupled to 2-D Random Surfaces (1995)
Dass, N. D. Hari, Hanlon, B. E., Yukawa, T.
Finite size effects for the Ising Model coupled to two dimensional random surfaces are studied by exploiting the exact results from the 2-matrix models. The fixed area partition function is...
Complex Structures Defined on Dynamically Triangulated Surfaces (1995)
Kawai, H., Tsuda, N., Yukawa, T.
A method to define the complex structure and separate the conformal mode is proposed for a surface constructed by two-dimensional dynamical triangulation. Applications are made for surfaces coupled...
Classical Solution of Two Dimensional $R^2$-Gravity and Cross-Over Phenomenon (1995)
ICHINOSE, S., TSUDA, N., YUKAWA, T.
Two dimensional quantum R$^2$-gravity and its phase structure are examined in the semiclassical approach and compared with the results of the numerical simulation. Three phases are succinctly...
Disposition of moxalactam and N-methyltetrazolethiol in rats and monkeys.
Mizojiri, K, Norikura, R, Takashima, A, Tanaka, H, Yoshimori, T, Inazawa, K, ...
The disposition of moxalactam (MOX) and N-methyltetrazolethiol (NMTT) in rats and monkeys after intravenous injection was investigated, focusing on the in vivo liberation of NMTT, by using...
Disposition of moxalactam and N-methyltetrazolethiol in rats and monkeys.
Mizojiri, K, Norikura, R, Takashima, A, Tanaka, H, Yoshimori, T, Inazawa, K, ...
The disposition of moxalactam (MOX) and N-methyltetrazolethiol (NMTT) in rats and monkeys after intravenous injection was investigated, focusing on the in vivo liberation of NMTT, by using...
Platelet-activating factor induces eosinophil peroxidase release from purified human eosinophils.
Kroegel, C, Yukawa, T, Dent, G, Chanez, P, Chung, K F, Barnes, P J
The degranulation response of purified human eosinophils to platelet-activating factor (PAF) has been studied. PAF induced release of eosinophil peroxidase (EPO) and beta-glucuronidase from highly...
Yukawa, T, Kroegel, C, Evans, P, Fukuda, T, Chung, K F, Barnes, P J
We have examined the induction of hypodense eosinophils by platelet-activating factor (PAF), a mediator which may be involved in eosinophil activation in allergic diseases. Guinea-pig eosinophils...