Hideo Taira

Simple methods for preparation of a well-defined 4-pyridinethiol modified surface on Au(111) electrodes for cytochrome c electrochemistry

Abstract A very small amount of sulfide impurity in 4-pyridinethiol (4-PySH) modifier solution was found to interfere with the proper formation of the 4-PySH modified surface for cytochrome c electrochemistry on an Au(111) electrode. When the modification was conducted in an alkaline (e.g. 0.1 M KOH) solution, in aqueous solutions under applying a potential more positive than 0.3 V vs. Ag/AgCl, or at a low modifier concentration (e.g. 20 μM), the proper 4-PySH modified surface was obtained even using 4-PySH as received, which contained a small amount of sulfide. The selective adsorption of 4-PySH in the presence of a small amount of sulfide under these conditions was due to the rapid formation of proper 4-PySH modified surface, which prevented the sulfide from reacting with the electrode surface.

Chiral anomaly for V-A fields in four- and six-dimensional curved space

The chiral U(1) anomalies associated with a fermion of spin

CHIRAL ANOMALY IN d=4, N=1 SUPERGRAVITY

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Gravitational anomalies in higher dimensional Riemann-Cartan space

interacting with nonabelian vector and axial-vector fields in four- and six-dimensional curved space are given in tensorial form.

A DESIGN OF AN ONLINE COURSE TO ADJUST LEARNING STYLE IN HIGHER EDUCATION FOR PRE-UNIVERSITY STUDENTS

The chiral U(1) anomaly in d=4, N=1 supergravity is evaluated on the basis of the heat kernel method. We consider all gravitino interactions of the theory, i.e. not only the minimal coupling of gravitino and gravitational fields, but also four-gravitino interactions which are treated as two-gravitino interactions in the background field method. We show the explicit form of a new contribution from the four-gravitino interactions to the anomaly.

Scalar field represented by vierbein on two-sheeted riemann space

By applying the covariant Taylor expansion method of the heat kernel, the covariant Einstein anomalies associated with a Weyl fermion of spin in four-, six- and eight-dimensional Riemann–Cartan space are manifestly given. Many unknown terms with torsion tensors appear in these anomalies. The Lorentz anomaly is intimately related to the Einstein anomaly even in Riemann–Cartan space. The explicit form of the Lorentz anomaly corresponding to the Einstein anomaly is also obtained.