検索結果 686件中 1-20 を表示

  • 短繊維補強されたコンクリート製集水蓋の開発

    浦野 登志雄 , 松田 学 , 松本 康資 , 井形 友彦 , 溝口 稔也

    … The flexural toughness of the concrete mixed with polyvinyl alcohol fiber (PVA-fiber) was increased than others. … Furthermore, a bending test of the catchment lid manufactured by PVA-fiber reinforced concrete was performed. …

    熊本高等専門学校 研究紀要 = RESEARCH REPORTS OF KUMAMOTO NATIONAL COLLEGE OF TECHNOLOGY 8(1), 19-25, 2017-02

    機関リポジトリ

  • Effectiveness of Fiber Reinforcement on the Mechanical Properties and Shrinkage Cracking of Recycled Fine Aggregate Concrete

    NAM Jeongsoo , KIM Gyuyong , YOO Jaechul , CHOE Gyeongcheol , KIM Hongseop , CHOI Hyeonggil , KIM Youngduck

    … This paper presents an experimental study conducted to investigate the effect of fiber reinforcement on the mechanical properties and shrinkage cracking of recycled fine aggregate concrete (RFAC) with two types of fiber—polyvinyl alcohol (PVA) and nylon. … A small fiber volume fraction, such as 0.05% or 0.1%, in RFAC with polyvinyl alcohol or nylon fibers was used for optimum efficiency in minimum quantity. …

    Materials 9(3), 131, 2016-02-26

    機関リポジトリ DOI

  • 2-4-4 セミクラスレートハイドレートスラリーの流動特性およびCO<sub>2</sub> 収着量に与える分散剤の影響

    小松 博幸 , 小林 健志 , 渡邉 隼輔

    … sorption by tetra-n-butyl ammonium bromide (TBAB) semi-clathrate hydrate (SCH) slurries in the absence and in the presence of polyvinyl alcohol (PVA) and sodium dodecyl sulfate (SDS) dispersants was investigated. … SDS caused a reduction in the SCH slurry viscosity, whereas PVA caused an increase in slurry viscosity. …

    日本エネルギー学会大会講演要旨集 25(0), 50-51, 2016

    DOI

  • Optimization of the Granulation Binders of High-Purity Carbothermic Reduction for Solar-Grade Silicon

    Boucetta Abderahmane , Benioub Rabie , Chahtou Amina , Heddadj Sidi Mohammed , Ogasawara Takuya , Furuya Yasubumi , Hamzaoui Saad , Itaka Kenji

    … In the case of starch and sucrose, the strengths of granules were not enough to the process with the pressure of the generated CO gas, while the granules with enough strength, namely, the ones with polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC), resulted in silicon yield of 33.8% and 27.8%, respectively.</p> …

    MATERIALS TRANSACTIONS 57(11), 1936-1944, 2016

    DOI

  • 揺動型試験機を用いたポリビニルアルコールハイドロゲルの摩擦特性

    岩井 智昭 , 澤山 千晶 , 西堀 淳 , 正角 豊

    … <p>Polyvinyl alcohol hydrogel (PVA-H) is expected as an artificial articular cartilage. … A sus304 stainless steel ball with the diameter 35mm was slid to concave PVA-H with the same radius of curvature to the mating ball. … The PVA-H specimen was formed by 5 repeated thaw-freeze cycles. … The PVA-H and ball was slid under saline lubricant at room temperature. …

    生体医工学 54Annual(26AM-Abstract), S11-S11, 2016

    DOI

  • Formulation and Evaluation of Morin-Loaded Solid Lipid Nanoparticles

    Ikeuchi-Takahashi Yuri , Ishihara Chizuko , Onishi Hiraku

    … <p>In this study, solid lipid nanoparticle (SLN) suspensions were prepared using a base of hard fat with or without ethylcellulose (EC) and polyvinyl alcohols (PVA) and polysorbate (Tween) 60 surfactants. … A relatively low-saponification-degree PVA was required to reproducibly form SLN suspensions without EC and relatively high-saponification-degree PVAs were suitable for SLNs with EC. …

    Biological & Pharmaceutical Bulletin 39(9), 1514-1522, 2016

    DOI

  • Formulation and evaluation of morin-loaded solid lipid nanoparticles

    Ikeuchi-Takahashi Yuri , Ishihara Chizuko , Onishi Hiraku

    … In this study, solid lipid nanoparticle (SLN) suspensions were prepared using a base of hard fat with or without ethylcellulose (EC) and polyvinyl alcohols (PVA) and polysorbate (Tween) 60 surfactants. … A relatively low-saponification-degree PVA was required to reproducibly form SLN suspensions without EC and relatively high-saponification-degree PVAs were suitable for SLNs with EC. …

    Biological and Pharmaceutical Bulletin advpub(0), 2016

    J-STAGE DOI

  • J0450402 PVA/セルロースナノ織維複合材料の延伸による高強度化に関する研究

    西村 建哉 , 高木 均 , NAKAGAITO Antonio Norio , 松井 喬寛

    … Specimens consisted of cellulose nanofiber and polyvinyl alcohol. …

    年次大会 : Mechanical Engineering Congress, Japan 2015, "J0450402-1"-"J0450402-3", 2015-09-13

  • G0600504 スリット噴流による液膜表面流および蒸発の挙動解析

    島野 太貴 , 小野 直樹

    PVA (polyvinyl-alcohol) aq.sol. … It was observed that a convection occurred on the liquid film surface of the PVA aq.sol. …

    年次大会 : Mechanical Engineering Congress, Japan 2015, "G0600504-1"-"G0600504-4", 2015-09-13

  • 高速衝突を受けるPVA短繊維補強セメント複合材料板の局部破壊に短繊維混入量が及ぼす影響

    上野 裕稔 , 別府 万寿博 , 小川 敦久

    … This study presents local damage resistant performance of fiber reinforced cementitious composite plates including polyvinyl alcohol short fibers subjected to high velocity impact by a steel projectile. …

    構造工学論文集 A 61A(0), 899-911, 2015

    DOI

  • 人工軟骨候補材料の固液二相性潤滑特性の解析

    橋本 知依 , 坂井 伸朗 , 内村 智章 , 鎗光 清道 , 澤江 義則 , 村上 輝夫

    … A new material for articular cartilage made of PVA (polyvinyl alcohol) hydrogel have been researched in aiming superior frictional properties of synovial joint system. … In this report, a fiber reinforced PVA hydrogel was proposed to generate biphasic lubrication mode. … The fiber reinforced PVA hydrogel used in this study effectively promoted the fluid pressure. …

    生体医工学 53(Supplement), S255_02-S255_02, 2015

    DOI

  • Development of a New Bioartificial Liver Support System Using a Radial-flow Bioreactor

    AOKI Takeshi , MURAKAMI Masahiko , YASUDA Daisuke , KOIZUMI Tomotake , JIN Zhenghao , FUJIMORI Akira , KUSANO Tomokazu , MATSUDA Kazuhiro , YAMADA Kosuke , NOGAKI Koji , WADA Yusuke , ENAMI Yuta , MITAMURA Keitaro , GOTO Satoru , YOSHITAKE Osamu , WATANABE Makoto , OTSUKA Koji , KUSANO Mitsuo

    … Here, we describe a high performance three-dimensional rat hepatocyte culture system using a radial-flow bioreactor (RFB) with a polyvinyl alcohol (PVA) membrane as a small-scale BAL support system. … and group B: isolated hepatocytes were injected into the medium chamber of the RFB-PVA culture system. … Light and electron microscopic examination of hepatocytes explanted from the PVA membrane was also performed. …

    The Showa University Journal of Medical Sciences 27(3), 155-165, 2015

    機関リポジトリ J-STAGE 医中誌Web DOI

  • 漏洩遮断のための磁場下にある分岐管内MR流体のクラスター形成と流動特性解析

    原田 真琴 , 上原 聡司 , 高奈 秀匡 , 西山 秀哉

    … Main channels made of acrylic, silicone and polyvinyl alcohol-hydrogel (PVA-H) were used in order to evaluate the effect of channel elasticity on flow dynamics of MR fluid. …

    日本機械学会論文集 81(823), 14-00547-14-00547, 2015

    J-STAGE DOI

  • Friction Properties of Laminated Composite Materials of Alpha-Tricalcium Phosphate–Filled Poly (Vinyl Alcohol) Hydrogels

    Yamamoto Kanae , Iwai Tomoaki , Shoukaku Yutaka

    … The aim of this study was to examine the mechanical characteristics of a polyvinyl alcohol hydrogel (PVA-H) as a candidate material for artificial joint cartilage. … In the study, PVA-H was filled with α-tricalcium phosphate (α-TCP) in order to improve its mechanical properties. … In addition, laminated composite materials with 3 layers were prepared by laminating α-TCP–filled PVA-H and unfilled PVA-H. …

    Tribology Online 10(6), 413-419, 2015

    機関リポジトリ J-STAGE DOI

  • ポリイタコン酸-PVA系IPNヒドロゲルの調製とその保水材としての評価

    小林 悠 , 田口 絵梨佳 , 刈込 道徳 [他] , 木村 隆夫

    … アルコール(PVA)からなる相互侵入高分子網目(IPN)ヒドロゲルを調製した.まず,PVAの重合度(1000,2000,4000)とその添加量がIPNヒドロゲルの膨潤度,圧縮強度および再膨潤能に及ぼす影響について調査した.膨潤度はPVAの重合度が2000のIPNヒドロゲルで比較的高く,PVAの添加量が増えるほど低下する傾向を示した.また圧縮強度はPVAの重合度に …

    高分子論文集 72(12), 731-736, 2015

    J-STAGE DOI

  • β-シクロデキストリン結合型ポリビニルアルコール球状含水ゲルの合成と微生物固定化担体としての応用

    山 博人 , 德永 光 , 福永 公寿

    … アルコール(PVA)球状含水ゲルの一つとして,有機物の包接能をもつβ-シクロデキストリン(βCyD)の存在下,PVAのホルマール化をHCHO濃度80 g/L,反応温度80°C,反応時間3 hの条件に供することで,βCyD含有量10~110 µmol/gのβCyD結合型PVA球状含水ゲル(PVA-<i>bonded</i>-βCyD)を調製した.βCyD含有量0,10,33,41,そして74 µmol/gのPVA球状含水ゲル …

    高分子論文集 72(10), 606-616, 2015

    J-STAGE DOI

  • ポリイタコン酸-PVA系IPNヒドロゲルの調製とその保水材としての評価

    小林 悠 , 田口 絵梨佳 , 刈込 道徳 , 木村 隆夫

    … アルコール(PVA)からなる相互侵入高分子網目(IPN)ヒドロゲルを調製した.まず,PVAの重合度(1000,2000,4000)とその添加量がIPNヒドロゲルの膨潤度,圧縮強度および再膨潤能に及ぼす影響について調査した.膨潤度はPVAの重合度が2000のIPNヒドロゲルで比較的高く,PVAの添加量が増えるほど低下する傾向を示した.また圧縮強度はPVAの重合度に …

    高分子論文集 advpub(0), 2015

    J-STAGE DOI

  • β-シクロデキストリン結合型ポリビニルアルコール球状含水ゲルの合成と微生物固定化担体としての応用

    山 博人 , 德永 光 , 福永 公寿

    … アルコール(PVA)球状含水ゲルの一つとして,有機物の包接能をもつβ-シクロデキストリン(βCyD)の存在下,PVAのホルマール化をHCHO濃度80 g/L,反応温度80℃,反応時間3 hの条件に供することで,βCyD含有量10~110 µmol/gのβCyD結合型PVA球状含水ゲル(PVA-<i>bonded</i>-βCyD)を調製した.βCyD含有量0,10,33,41,そして74 µmol/gのPVA球状含水ゲル …

    高分子論文集 advpub(0), 2015

    J-STAGE DOI

  • 導電性高分子繊維を用いたファブリックヒーター

    三浦 宏明 , 寸田 剛司 , 木村 睦

    … We have been studying blending fibers that consists of the electroconductive polymer and another polymer (e.g. polyvinyl alcohol: PVA) to achieve high strength along with high conductivity for practical applications. …

    電気学会論文誌D(産業応用部門誌) 135(9), 948-952, 2015

    J-STAGE DOI

  • 高粘性高分子溶液中でのコロイドプローブ AFM 法による表面間力の評価

    森 剛志 , 岩方 裕一 , 松田 智宏 [他] , 神谷 秀博

    … The interaction between silica particle and mica substrate in highly viscous aqueous polyvinyl alcoholPVA) solutions of different concentrations was determined by colloidal probe AFM. … The attractive force resulting from van der Waals interaction was not observed in PVA solutions. …

    粉体工学会誌 52(4), 188-195, 2015

    J-STAGE DOI

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