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The renormalization group (RG) method as a powerful tool for reduction of evolution equations is formulated in terms of the notion of invariant manifolds. We start with derivation of an exact RG equation which is analogous to the Wilsonian RG equations in statistical physics and quantum field theory. It is clarified that the perturbative RG method… (More)

- Etsuhisa Takahashi, Kosuke Kataoka, +6 authors Hiroshi Kido
- Microbes and infection
- 2010

The antiviral neuraminidase inhibitor oseltamivir (OSV) is widely used to suppress viral replication in the treatment of influenza. Here, we report that OSV administration significantly suppressed respiratory mucosal secretory IgA responses with respect to antigen (Ag)-specific antibody (Ab) production and also the induction of Ag-specific IgA Ab-forming… (More)

- Kazuyuki FUJII
- 2001

The purpose of this paper is to introduce several basic theorems of coherent states and generalized coherent states based on Lie algebras su(2) and su(1,1), and to give some applications of them to quantum information theory for graduate students or non–experts who are interested in both Geometry and Quantum Information Theory. In the first half we make a… (More)

- Kazuyuki FUJII
- 1999

We give a possible generalization to the example in the paper of Zanardi and Rasetti (quant–ph 9904011). For this generalized one explicit forms of adiabatic connection, curvature and etc. are given. ∗E-mail address : fujii@math.yokohama-cu.ac.jp This is a comment paper to Zanardi and Rasetti[1] and the aim is to give a mathematical inforcement to [1].… (More)

We first consider nonlinear Grassmann sigma models in any dimension and next construct their submodels. For these models we construct an infinite number of nontrivial conserved currents. Our result is independent of time-space dimensions and, therfore, is a full generalization of that of authors (Alvarez, Ferreira and Guillen). Our result also suggests that… (More)

- Kazuyuki FUJII
- 2000

We make a brief review of (optical) Holonomic Quantum Computer (or Computation) proposed by Zanardi and Rasetti (quant–ph 9904011) and Pachos and Chountasis (quant–ph 9912093), and give a mathematical reinforcement to their works. ∗E-mail address : fujii@math.yokohama-cu.ac.jp

- Yoshimi Nagasawa, Kazuyuki Fujii, Takafumi Yoshikawa, Yoshinori Kobayashi, Toshiya Kondo
- Phytochemistry
- 2008

Pokeweed antiviral protein (PAP) isolated from Phytolacca americana is a ribosome-inactivating protein (RIP) that has RNA N-glycosidase (RNG) activity towards both eukaryotic and prokaryotic ribosomes. In contrast, karasurin-A (KRN), a RIP from Trichosanthes kirilowii var. japonica, is active only on eukaryotic ribosomes. Stepwise selection of chimera… (More)

We extend the Barut-Girardello coherent state for the representation of SU(1, 1) to the coherent state for a representation of U(N, 1) and construct the measure. We also construct a path integral formula for some Hamiltonian.

- Masashi Takano, Naoki Sasaki, +8 authors Yoshihiro Kikuchi
- Oncology reports
- 2008

Pure-type clear cell carcinoma (CCC) has been recognized as a distinct subtype of ovarian cancer, showing a resistance to chemotherapy and resulting in poor prognosis. Our aim was to evaluate the effects of complete surgical procedures followed by adjuvant chemotherapy for CCC patients whose tumors were confined to the ovary (pT1M0). During the period of… (More)

- Keiko Saito, Yoshihiro Kikuchi, Kazuyuki Fujii, Tsunekazu Kita, Kenichi Furuya
- Targeted Oncology
- 2006

Antiangiogenic scheduling of cancer chemotherapeutics has been increasingly recognized to be a potential application of the paclitaxel in cancer therapy. The purpose of this study is to confirm antiangiogenic effects of weekly low-dose paclitaxel in recurrent ovarian carcinoma. Measurements of serum vascular endothelial cell growth factor (VEGF) and… (More)