Nagoya University · 의학
이 교수의 연구실은 비선형 임펄스 방정식과 고전적 스핀체계의 정밀한 해석을 중심으로, 다차원 편미분 방정식의 국소해(특히 다중 솔리톤, 랩, 루프 솔루션 등)를 그람형 행렬식과 다르부 변환을 통해 체계적으로 구축하는 데 초점을 맞추고 있습니다. 특히 이시모리 방정식과 카프-뉴웰 방정식 등에서 새로운 형태의 비선형 파동 해를 발견하고, 이들의 동역학적 특성과 구조적 안정성을 분석하는 데 기여하고 있습니다. 또한 생물의학적 응용 분야에서도 산소공급 지수의 임상적 유용성과 모성 면역 활성화 모델에서 수소의 신경보호 효과를 탐색하며 응용 연구를 확장하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
It is known that the Ishimori-I equation, which is the (2+1)-dimensional generalization of the classical continuous Heisenberg ferromagnet equation, has various localized solutions such as the dromion, lump and rationally-exponentially localized solutions. In this paper localized solutions of the Ishimori-I equation are constructed explicitly in terms of grammian determinants by using the binary Darboux transformation, and it is shown that they include not only the multi-soliton (dromion, lump a
In this paper the Kaup-Newell (KN) inverse scattering formulation are generalized, and a new Darboux transformation is introduced for it. Some Darboux covariant (1+1) dimensional soliton equations associated with the generalized KN formulation are derived systematically, which include not only the derivative nonlinear Schrödinger (DNLS), the modified KdV, the sine-Gordon and the massive Thirring equations but also some new nonlinear time evolution equations. Multi-soliton solutions of the DNLS e
SI is a better parameter for PPH detection in vaginal deliveries than other vital signs. However, clinical judgment must incorporate other vital signs and symptoms associated with hypovolemic shock due to the low sensitivity of SI.
It is known that the IshimoriII equation has the lump solutions decaying polynomially in all directions, which are called the multi-vortex (and multi-antivortex) solutions; they are constructed by Hirota's method and a-dressing method. In this paper we construct rational solutions of the Ishimori-II equation by means of the Darboux transformation and show that they contain not only the multivortex solutions obtained by Hirota's method as a special case, but also new lump solutions, such as mixed
The aim of the present study was to investigate long-term outcomes of the offspring in a lipopolysaccharide (LPS)-induced maternal immune activation (MIA) model and the effect of maternal molecular hydrogen (H<sub>2</sub>) administration. We have previously demonstrated in the MIA mouse model that maternal administration of H<sub>2</sub> attenuates oxidative damage and neuroinflammation, including induced pro-inflammatory cytokines and microglial activation, in the fetal brain. Short-term memory
Room-temperature piezoelectric photothermal spectroscopy (PPTS) measurements were carried out for the single-quantum-well (SQW) structures of GaInNAs. Four as-grown samples with thicknesses of 10, 7, 5 and 3 nm were used to investigate the quantum confinement effect in the SQW. The exciton contribution was clearly distinguished from the two-dimensional step like band-to-band transition. The thickness dependence of PPT signal peak energy were well understood by quantum mechanics. The decrease in
The present study assessed whether lipid peroxidation in plasma might predict restenosis after coronary balloon angioplasty. A total of 87 patients, who had undergone successful coronary balloon angioplasty using standard techniques, were enrolled. Fasting blood samples before the intervention were measured for plasma levels of thiobarbituric acid reactive substances (TBARS, an indicator of lipid peroxidation). Angiography was carried out before and 15 min after angioplasty, and at follow-up (4
<i>Background and Objectives:</i> The effects of postpartum zinc supplementation are still unclear. Our purpose in this study is to investigate the association between Zn supplementation and postpartum depression, defined by an Edinburgh Postnatal Depression Scale (EPDS) score ≥ 9, and the effect on the hematological status of postpartum women. <i>Materials and Methods:</i> We first investigated whether zinc supplementation affected the perioperative levels of zinc, hemoglobin, and hematocrit in
We present an n-dimensional integrable homogeneous Lotka--Volterra system, which has $(n^2-1)$-dimensional Lie symmetry algebra. Moreover a wider integrable family is derived from the structure of the Lie algebra.
Our findings suggest that the PROPESS efficacy depends on Bishop score at insertion and that vaginal bleeding at PROPESS insertion might have a significantly positive effect on cervical ripening in term pregnant women.
