γ線照射処理した Picea abies の仮道管壁の構造

When a wood specimen (Picea abies (L.) KARST) was γ-irradiated (655 Mrad), microfibrillar texture as seen in the untreated wood was still clearly observed by replica on the surface of the tracheid, while this wood became non-crystalline with X-ray diffractioIn. In transverse and longitudinal sections of the tracheid in γ-irradiated wood microfibrils were observed by the method of block negative staining with uranyl acetate. The disintegration of γ-irradated wood produced many short broken microfibrils. The above facts indicate that γ-irradiation produces many defects even within the crystalline region of microfibrils while retaining their original shapeγ線照射 (655 Mrad) 処理材 〔Picea abies (L.) KARST〕 のX線回折図では結晶性ピークを示さないのに, 電子顕微鏡でレプリカ法により観察すると, 仮道管内壁面には顕著なミクロフィブリルの配向がみられた。本報では, γ線処理材の仮道管にみられるこのようなミクロフィブリル像の実体を明らかにしようとした。γ線処理材を酢酸ウラニルでブロック負染色法により電子顕微鏡観察すると, 仮道管の横断面・縦断面ともにミクロフィブリルが白い斑点状 或いは線状に存在することが確認された。さらにこの試料を解体して観察すると, 短破片状のミクロフィブリルがみられた。以上の結果から, このγ線処理材においては, ミクロフィブリル中に多くの結晶欠陥が存在するが, なおミクロフィブリルの形態は保持されているものと推定される

Structure of Mass Gap between Two Spin Multiplets

Studying our semirelativistic potential model and the numerical results, which succeeds in predicting and reproducing recently discovered higher resonances of $D$, $D_s$, $B$, and $B_s$, we find a simple expression for the mass gap between two spin multiplets of heavy-light mesons, $(0^-,1^-)$ and $(0^+,1^+)$. The mass gap between chiral partners defined by $\Delta M=M(0^+)-M(0^-)$ and/or $M(1^+)-M(1^-)$ is given by $\Delta M=M(0^+)-M(0^-)=M(1^+)-M(1^-)\approx \Lambda_{\rm Q}-m_q$ in the limit of heavy quark symmetry, and including $1/m_Q$ corrections, we have $\Delta M\approx \Lambda_{\rm Q}-m_q+(1.28\times 10^{5}+4.26\times 10^{2}\cdot m_q)/m_Q$ with $\Lambda_{\rm Q}\approx 300$ MeV, a light quark mass $m_q$, and a heavy quark mass $m_Q$. This equation holds both for $D$ and $D_s$ heavy mesons. Our model calculations for the $B$ and $B_s$ also follow this formula.Comment: 6 pages, 2 figure

画像の学習に基づく姿勢推定手法の学習サンプル数と精度の関係性の検討

平成20年度電気・情報関連学会中国支部第59回連合大会発表資料 ; 開催地:鳥取大学 ; 開催日:2008年10月25

Experimental study on properties of pose representations for 3DOF linear pose estimations

MIRU 2009 第12回 画像の認識・理解シンポジウム ポスター資料 ; 開催場所 : くにびきメッセ, 松江 ; 開催日時:2009年7月20日～7月22

CORONARY ARTERY MORPHPLOGY AND REACTIVITY TO ACUTE HYPOXIA IN CHRONIC PULMONARY DISEASE

In patients with chronic pulmonary disase (CPD), myocardial infarction is rare. To elucidate why this is so, we investigated the morphological changes and the reactivity of the coronary artery to acute hypoxia in patients with CPD. Sixty patients with CPD and 28 normal subjects were studied. Measurements of pulmonary homodynamics and coronary angiography were undertaken before and after inhalation of 13%O2 for 15 minutes. The size of the coronary arteries was measured using a densitometric method, and a coronary narrowing score was calculated according to the WHO criteria. The size of the left anterior descending artery of patients with low %VC and hypoxia was larger than that of the normal subjects. In patients with CPD, the coronary narrowing score was low and the atherosclerotic change was minimal. The reactivity of the coronary arteries to acute hypoxia was reduced in patients with CPD when compared with normal subjects