ヒトiPS細胞由来3次元網膜組織から単離精製した網膜神経節細胞の評価

要約のみTohoku University中澤徹課

Thermal Expansion in Layered NaxMO2

Layered oxide Na x MO2 (M: transition metal) is a promising cathode material for sodium-ion secondary battery. Crystal structure of O3- and P2-type Na x MO2 with various M against temperature (T) was systematically investigated by synchrotron x-ray diffraction mainly focusing on the T-dependences of a- and c-axis lattice constants (a and c) and z coordinate (z) of oxygen. Using a hard-sphere model with minimum Madelung energy, we confirmed that c/a and z values in O3-type Na x MO2 were reproduced. We further evaluated the thermal expansion coefficients (α a and α c ) along a- and c-axis at 300 K. The anisotropy of the thermal expansion was quantitatively reproduced without adjustable parameters for O3-type Na x MO2. Deviations of z from the model for P2-type Na x MO2 are ascribed to Na vacancies characteristic to the structure

1次元血流動態モデルにおける血管狭窄シミュレーション

2018年度卒業論文要旨, 情報科学部情報科学

Local structures around the substituted elements in mixed layered oxides

The chemical substitution of a transition metal (M) is an effective method to improve the functionality of a material, such as its electrochemical, magnetic, and dielectric properties. The substitution, however, causes local lattice distortion because the difference in the ionic radius (r) modifies the local interatomic distances. Here, we systematically investigated the local structures in the pure (x = 0.0) and mixed (x = 0.05 or 0.1) layered oxides, Na(M1−xM′x)O2 (M and M′ are the majority and minority transition metals, respectively), by means of extended X-ray absorption fine structure (EXAFS) analysis. We found that the local interatomic distance (dM-O) around the minority element approaches that around the majority element to reduces the local lattice distortion. We further found that the valence of the minority Mn changes so that its ionic radius approaches that of the majority M

A Study on SCP of China’s Securities Investment Fund Industry

证券投资基金是一种利益共存、风险共担的集合证券投资方式。近13年来中国证券投资基金业的发展迅猛，不仅为广大投资者提供了一种新型的金融投资选择，而且为完善中国的货币市场和资本市场发挥着积极作用。然而，社会公众与学术界对证券投资基金问题的关注主要集中于宏观和微观层面，从基金产业角度出发的中观层面的研究甚少。 本文从产业组织理论的视角出发，首先介绍了市场结构（structure）—市场行为（conduct）—市场绩效（performance）（SCP）相关理论，以及相关研究现状；接着通过市场集中程度的测算、产品差异化程度和基金业进入退出壁垒的分析，研究中国证券投资基金业的市场结构；进一步分析中国证...The securities investment fund is kind of aggregate securities investment that coexists with interests and risk at the same time. China’s securities investment fund industry has rapidly developed during the past 13 years, it not only provides a new kind of investment type for investors, but also plays a significant role in the development of China’s money market and capital market. However, public...学位：经济学硕士院系专业：经济学院金融系_金融学(含保险学)学号：1562008115206

Invariant nature of substituted element in metal-hexacyanoferrate

The chemical substitution of a transition metal (M) is an effective method to improve the functionality of materials. In order to design the highly functional materials, we first have to know the local structure and electronic state around the substituted element. Here, we systematically investigated the local structure and electronic state of the host (Mh) and guest (Mg) transition metals in metal-hexacyanoferrate (M-HCF), Na x (Mh, Mg)[Fe(CN)6] y (1.40 < x < 1.60 and 0.85 < y < 0.90), by means of extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analyses. The EXAFS and XANES analyses revealed that the local structure and electronic state around Mg are essentially the same as those in the pure compound, i.e, Mg-HCF. Such an invariant nature of Mg in M-HCF is in sharp contrast with that in layered oxide, in which the Mg valence changes so that local Mg-O distance (d M-Og) approaches the Mh-O distance (d M-Oh)

High-temperature quantum phenomena of A-site ordered transition-metal oxides in strongly-correlated electron system

制度:新 ; 文部省報告番号:甲2117号 ; 学位の種類:博士(理学) ; 授与年月日:2005/10/27 ; 早大学位記番号:新410