Epoxy acrylate resin has the advantages of toughness and corrosion resistance as a matrix resin of composites. Also it has been recognized as a compatible resin system for the matrix of CF/GF hybrid composites. In this study, some epoxy acrylates were synthesized from bis-phenolic epoxy oligomers and methyl methacrylic acid and were modified with diisocianates to study the effect of chemical composition of resin systems on composite properties. With increasing epoxy oligomer's n value, interlaminar strength increased in CFRP and CF/GF hybrid laminates. In addition, some peculiar chemical reaction seemed to occur at the interface of carbon fiber with isocianate modificated resin systems, which indicates a possibility of creating a new high strength CF-composite from unsaturated resin systems.

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The section of the Tone River upstream of its confluence with the Watarase River was traditionally called the Kamitone River. On the right bank of this Kamitone River a dyke running between the river and elevated ground, is called the Chujo Dyke. The area upstream of this dyke, where a number of settlements were located, provided a large retardingbasin, wtich served to protect the portion of the Saitama Plain downstream of the dyke, and since before the beginning of the modern era, there has been a long-standing dispute concerning the presence of this dyke between those living upstream and downstream of the dyke. How to assess the retarding effect of the basin above the Chujo Dyke is a major problem in modern flood control planning on the Tone River. The present paper provides a number of observations concerning this problem in the light of the river improvement plans drawn up during the Meiji Era (1869-1912) and the flood control plans of 1939 and 1949.

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By considering the compatibilizing effect for polymer alloy, two kinds of polymer type silane coupling agents, poly (methyl methacrylate) type (MacTMS-Ia-e) with M_n=1000-9800 and poly (styrene) type (MacTMS-IIa-e) with M_n=8300-11700 were prepared from the reaction of corresponding ω-allyl macromonomers and trimethoxysilane using H₂PtCl₆ as a catalyst, where ω-allyl macromonomers with a different molecular weight were prepared by radical polymerization of methyl methacrylate (or styrene) initiated with 2, 2'-azobisisobutyronitrile, varying the concentration of allyl mercaptan as a chain transfer agent. From the reaction of MacTMS and glass beads, the grafting efficiency (GE) of polymer onto glass beads was found to be 6.14-15.45%. A series of glass fiber reinforced plastics (GFRP-Ia-e, GFRP-IIa-e) were fabricated from GF cloth modified with MacTMS and bisphenolic epoxy acrylate resin oligomer as a matrix resin. It was found that the mechanical properties, such as flexural strength, flexural modulus, and ILSS, were affected by both the degree of polymerization and grafting efficiency of MacTMS.

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In the previous work, isocyanate modification of epoxy acrylate resin (EPA) was studied to improve the mechanical properties of CF/GF hybrid composite materials. In this work, some chemical reactions of diphenyl methan diisocyanate (MDI) as the third component with surface treatment agents of CF and GF were studied to improve the mechanical properties of the laminates. Epoxy silane and amino silane coupling agents were applied to GF surface in order to improve the interlaminar adhesion bonding. As the results, interlaminar shear strength and flexural bending strength were markedly improved, which indicated that some covalent bonds such as ester, urethan and urea bonds partially linked fiber surfaces with resin matrix.

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　症例は60歳女性。胸腹部大動脈瘤の診断で，人工心肺下に腹部4分枝再建，Y型人工血管置換術，右内腸骨動脈再建術が行われた。手術中循環動態は安定していた。術後ICUに入室直後，急激な血圧低下から無脈性電気活動（PEA）となり，胸骨圧迫を開始しアドレナリン静注で血圧が回復した。経食道心エコー検査を施行したところ，心嚢液の貯留と上行大動脈から下行大動脈に解離を認めた。逆行性解離が生じたと判断し直ちに手術室に戻り，上行部分弓部大動脈人工血管置換術が施行された。術直後の循環破綻に対し，経食道心エコー検査は有効であった。

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In fat products, the polymorphism is the major factor to determine the physical properties as melting behavior and morphology. The ultrasonication shortened the induction time of crystallization of trilaurin. And the polymorphism of triaurin was measured by the in-situ observation using time-resolved X-ray diffaction by u sing synchrotron radiation source . The ultrasonication promoted form which was a stable form.

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Thrombophlebitis commonly occurs in Bchcet disease and causes various symptoms. It is, however, very rare that a thrombosis causes nerve palsy. A case of brachial plexus palsy due to compression by venous thrombosis in the axillar area is reported. A 40-year - old man has been afflicted with Bghcet disease since 1982. He had a few month's history of a radiating pain and numbness on his left arm down to his fingers. Examination revealed a soft and egg-sized tumor in the left axilla. Tinel's sign was positive. Total resectioning of the tumor was done. The tumor was 20×20mm in size and connected to a branch of the axillar vein.
The Brachial plexus was directly compressed by the tumor. Histological examination proved this tumorous condition to be an intravenous thrombosis.

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Chronic subdural hematoma is one of the most common diseases encountered in neurosurgical practices. The relationship between the case number of chronic subdural hematoma and seasons has not been reported until now. The relationship between recurrence rate of chronic sub­dural hematoma and seasons has not been reported, too. We examined the monthly case number of and recurrence case number of chronic subdural hematoma in our hospital.

The examination included 769 adult patients who had undergone the first one burr-hole surgery between January 2000 and December 2010. We examined the monthly number of cases (recurrence cases and non-recurrence cases), recurrence rate, and recurrence risk factor.

The number of cases was higher in August, April, July and September. November and March had few cases. Recurrence rate was highest in July and lowest in December. We found an association between age and monthly recurrence rate among a recurrence risk factor.

We think that there is an association between the daily life activity of the elderly person and case number of chronic subdural hematoma. The daily life activity of elderly persons shows seasonality. Therefore, we think that the case number of chronic subdural hematoma shows seasonality. To decrease the recurrence rate, examination of the post­operative volume of infusion and an appropriate rest period are necessary.

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　症例は60歳男性。僧帽弁閉鎖不全症の診断で，僧帽弁置換術，三尖弁形成術，左心耳閉鎖術が施行された。人工心肺離脱後，上行大動脈のルートカニューレ及び送血管抜去部からの出血が多かった。血圧が低下傾向のため経食道心エコーで検索したところ，下行大動脈に解離を認めたが，上行大動脈の描出が不良のため大動脈直達エコーを行ったところ，上行大動脈に解離を認めた。Stanford A型急性大動脈解離と診断し，再び人工心肺を確立し，上行大動脈を切開したところルートカニューレ抜去部に解離を認め，上行置換術が施行された。人工心肺終了後に発症した急性大動脈解離の診断に，経食道心エコーと大動脈直達エコーが有用であった。

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High risk な89歳の腹部大動脈瘤被覆破裂の患者にステントグラフト内挿術を施行し良好な結果が得られた. 既往歴にASOがあり左I-Fバイパス, F-Fバイパス, 両側F-Pバイパスを受けている. 腹部大動脈瘤は腎動脈から2.5cm末梢に始まり径は4cm, 長さは3.5cmで分岐より中枢4cmで瘤は終わっている. 腹部大動脈の径は20mmで動脈瘤の頭側端より後腹膜腔へ造影剤の漏出がみられた. 30mm径, 長さ7.5cmの3連Zステントを中枢側は約1cmステントを裸にし, 24mm超薄型ウーブングラフトで被覆し中枢と末梢端を固定した. 左大腿動脈の人工血管よりデリバリーシースの先端を腎動脈の直下まで進めて内筒を固定しながら外筒を引き抜きステントグラフトを血管内に留置し, さらに大動脈閉塞バルーンにてステントを拡張固定した. 直後の造影ではリークもなく良好にステントグラフトが造影された.

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