6 research outputs found

    Observation of the Decay B0→D±D*∓

    Get PDF
    journal articl

    糖鎖生物学の新展開

    Get PDF
    α-1,3-フコース転移酵素cDNAの導入と強制発現により、L細胞のインテグリン依存性の接着が促進された。ヒト骨髄球系細胞に於て、ガングリオシドの合成を制御する酵素としてGM3を合成するシアル酸転移酵素とLc3Cerを合成するN-アセチルグルコサミン転移酵素を同定した。ヒト結腸癌組織においてシアリルLe^aの抗原を持つ糖鎖の構造を明かにした。ルウィス血液型陰性の個体に於て、FuT-III遺伝子の変異をヌクレオチドレベルで解明した。胃体部と胃前庭部に於て、消化管ムチンの硫酸化糖鎖の構造パターンが異なっていた。Gsl-5糖鎖を形成するβ-1、6-N-アセチルグルコサミン転移酵素を精製し、アミノ酸部分配列を明かにした。肝細胞膜の表層糖鎖末端β-ガラクトシドが肝細胞接着に関与し、この機構にC-型レクチンは関与しないと示唆された。成人型異染性脳白質変性症の原因となるアリルスルファタ-ゼAの新しい構造異常を見出した。ウシ精巣性ヒアルロニダーゼの糖転移反応を利用して、新しいハイブリッド型プロチオグリカンを作成した。ニワトリCa^依存性α-マンノシダ-ゼの特異性を解明した。マクロファ-ジレクチンのチロシン残基(Tyr5)がインタ-ナリゼイションに必須なことを明かにした。また、C-型レクチンの1つであるコンアグルチニンのcDNAおよびゲノムシークエンスを明かにした。Sophora japonica樹皮中のレクチンが損傷の修復に関与する可能性を指摘した。アルコール依存症患者血清に糖鎖欠損トランスフェリンを見出した。コンドロイチン硫酸のペプチドとの結合部位を合成した。ヒトマクロファージのレクチンcDNAを単離し、構造決定した。科学研究費補助金 研究種目:総合研究(A) 課題番号:03304050 研究代表者:村松 喬 研究期間:1991-1993年度research repor

    Evaluation for Optical and Thermal Properties of Si-nanopillars(NPs)/SiGe Composite Film Intentionally Varied NPs Spacing

    Get PDF
    Thermoelectric (TE) devices have been attracted attention because of their importance in converting waste heat into electrical energy. Si-based materials are expected to use as low-cost TE devices. By introducing nanostructure into the TE materials, both low thermal (κ) and high electrical conductivities are required. We have succeeded to fabricate a highly periodic Si-nanopillars (NPs) structure embedded in Si0.7Ge0.3. Bio-template and Neutral-Beam Etching techniques enable us to fabricate the NPs of 10 nm diameter. In this study, we have prepared two samples with different NP spacing of 40 and 60 nm. Our preliminary 3 measurements showed that κ of 40 and 60 nm spacing samples were 2.6 and 2.8 W/mK, respectively. Then, these were 35% lower than that of SiGe bulk material. However, this method requires an electrode as thin as the composite film. This is very difficult to prepare and we should use an electrode of 10 m width. Therefore, another evaluation technique is necessary to estimate κ more accurately. Piezoelectric photothermal (PPT) measurements were carried out to study the effect of NPs spacing on the optical and thermal properties from the non-radiative recombination point of view. The observed PPT signal of the 40 nm spacing sample was 10 times smaller than that of the 60 nm spacing sample. Since the PPT signal depends on κ as well as optical absorption coefficient ( ), we carried out a theoretical calculation based on a one-dimensional heat propagation equation to estimate κ and . However, the calculated results gave us unexpectedly lower κ and higher. A detailed 3-dimensional heat propagation model including carrier diffusion of photo excited carriers should be considered.departmental bulletin pape

    シロイヌナズナ NACガタ テンシャ インシ VND7 ノ カッセイ チョウセツ オ カイシタ ドウカン サイボウ ブンカ セイギョ ノ ブンシ キコウ ノ カイメイ

    Get PDF
    奈良先端科学技術大学院大学博士(バイオサイエンス)doctoral thesi

    競技参加のためのソーラーカーの最適走行シミュレーション*

    Get PDF
    application/pdfWith the joint R&D of Kitami Institute of Technology and Kyocera Corporation, solar-powered electric vehicles No.1 (SEV-1) and No. 2 (SEV-2) were made in 1989 and 1990 respectively. We subsequently improved them so they could compete in the ”Solar Challenge in Hokkaido ’91” road race in Kitami City. A simulation calculation was done beforehand to determine the optimum running mode, or how fast the car could run the race course with minimum power consumption. For calculation purpose, solar radiation was measured at Kitami Institute of Technology, and the course conditions, such as elevation changes, cornering and surface roughness of the road, traffic signs and so on, were taken into account as input data. With limited speed on a horizontal and an upward sloping roads, and with unlimited speed on downward sloping roads, the minimum running time for the cars SEV-1 and SEV-2 could be determined under 80% consumption of the energy stored in the battery.departmental bulletin pape
    corecore