Materials Literature
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シリカエアロゲルの断熱材としての応用を目的に，シリカエアロゲルとポリウレタンフォームを複合化したコンポジット断熱材の作製を行った．コンポジット断熱材の作製にはまずシリカ湿潤ゲルをゾル–ゲル反応中に軟質ポリウレタンフォームに含浸した．さらにその後に超臨界乾燥を行いポリウレタンフォーム中でシリカエアロゲルを作製することで複合化した．コンポジット断熱材は柔軟で屈曲性を有し，さらにシリカエアロゲルと同程度の熱伝導率を有していた．また，複合化するシリカエアロゲルを疎水化することで耐湿性が向上し，70°C・95%RHの高温高湿条件下でも10週間後の熱伝導率が0.002 W/(m · K)の増大に留まった．本手法がシリカエアロゲルの断熱材への応…
Fragrance finishing of textile materials has been greatly expanded and used in recent years. The textiles are worn, body temperature is ideal for the growth of bacteria. The prevention of microbial attack on textile material has become increasingly important which susceptible to microbial infestation. Fragrance finish…
Amorphous silicon (a-Si:H)/amorphous silicon-germanium (a-SiGe:H) superlattices were deposited by 13.56 MHz plasma enhanced chemical vapor deposition (PECVD) method using a mixture of SiH4, GeH4and H2. The superlattice materials consist of alternating layers of a-Si:H and a-SiGe:H. The a-Si:H layers were used as barri…
The paper describes a method for converting carbon powder obtained as byproduct while decontaminating spent pot liner by acid treatment route, into blast furnace tap hole mass. Producing an useful industrial product from waste helps in paying back the cost incurred during decontamination process of spent pot liner and…
クレージングにより，多孔層を周期的にもつPPフィルムを作成し，電池セパレータへの応用を検討した．クレーズ複合フィルムは，多孔層がフィルムの深さ方向に貫通しているため気体を透過させることができるが，局所的に多孔化した構造のため，通常のセパレータに比べ空孔率が低く，イオン導電性の指標となる気体透過性が劣っていた．しかし，クレージング時の処理条件を調整した結果，空孔率が上昇し，気体透過性を向上させることができた．この時，気体透過係数は，クレーズの成長に十分な処理速度の場合に，クレーズ分率に比例して上昇した．この結果を元に作成したクレーズ複合フィルムは，比較用に用いたセパレータに匹敵する高い気体透過性を示した．また，ボルタ型電池による簡易…
A series of crystalline semiconducting poly(3-butylthiophene) (P3BT)/crystalline insulating polyethylene (PE) blends were prepared and the miscibility, crystallization, and structure/morphology were investigated. Even though phase separation was observed by transmission electron microscopy (TEM) and small-angle X-ray…
A new slurry-making method consisting of two-stages of electro-magnetic(EM) stirring, was developed to manufacture high-quality slurries for rheo-diecasting of a near eutectic Al–Si based piston alloy. In the 1st stage of EM stirring, the optimized process conditions, such as the pouring temperature and the EM inducti…
さまざまな接触方式で海水から放射性セシウムを高速除去できる不溶性フェロシアン化コバルト担持繊維を作製した。まず，アニオン交換基をもつビニルモノマー，ジメチルアミノエチルメタクリレート（DMAEMA）を，γ線を予め照射した 6-ナイロン繊維にグラフト重合した。つぎに，フェロシアン化物イオンを DMAEMA グラフト繊維に吸着させた。さらに，コバルトイオンとフェロシアン化物イオンとの沈殿反応によって繊維上に不溶性フェロシアン化コバルト（K2Co[Fe(CN)6］) を担持した。パイロット規模の反応器を使って，ワインド型のセシウム吸着繊維を 1 回で約 100 kg を製造した。繊維に対する海水の重量比を 100 にして，回分の接触方式…
The main goal of this contribution is the development of a new heterogeneous Fenton-like oxidation system based on Prussian Blue supported over a commercially available granular activated carbon (GAC). The catalysts were prepared following basically three different approaches: (i) Prussian Blue (Fe3[Fe(CN)6]2) particl…
Precise micro-coils and mesh pipes with outer and inner diameters of 100 and 60μm were fabricated using laser-scan lithography and electrolytic etching. Non-magnetizable stainless-steel (SUS304) pipes were coated with resist films, and helical patterns were delineated using a laser-scan exposure system. Positive resis…
About a century ago, Pickering discovered that colloidal particles could stabilize emulsions instead of conventional emulsifiers 1 . The emulsions stabilized by colloidal particles, so called Pickering emulsions had aroused intensively interest in recent years because of its advantages over conventional emulsions In P…
Ion beam sputtering was used to produce Polytetrafluoroethylene (PTFE) thin films for optical coatings. We investigate the chemical structure and the optical parameters such as refractive index, absorption and scattering of these films.
The synthesis and characterization of new complexes of Fe(II), Co(II), Ni(II) and Cu(II) with bidentate (N-p-amino diphenyl amine) amino (2-hydroxy phenyl) acetonitrile ligand has been described .The ligand was prepared from 2-hydroxy benzaldehyde and 4-aminodiphenyl amine in the presence of KCN and acidic medium. The…
Shiga toxin-producing Escherichia coli (STEC) can cause conditions ranging from diarrhea to potentially fatal hemolytic uremic syndrome. Enteropathogen adaptation to the intestinal environment is necessary for the development of infection, and response to bile is an essential characteristic. We evaluated the response…
a ( a 266071) ( b 266071)
Post-myocardial infarction pathologies are additionally compromized by the poor self-repair capacity of the myocardium and the limited possibilities for clinical interventions for regeneration. Cell therapy and in particular tissue engineering evolved as attractive therapeutic options to counteract the high mortality…
Recently, tissue engineering therapy, culturing autologous chondrocytes in vitro to create three dimensional tissue for the replacement of damaged tissue, has been developed. Although the tissue engineering is a useful approach to reconstruct cartilage in vitro, the mechanical property of the engineered cartilage is n…
The increasing power and the often accompanying increase in size of LED-modules require design methods that allow for a reduction in lens size. This requires the enhancement of existing point source algorithms for extended sources or developement of new design methods.
A method of analytical prediction (AP) and the corresponding index LAP used for predicting high-spin stability of alternant conjugated hydrocarbon radical polymers were generalized for both non-disjoint closed-type and open-type systems. The general formulas of LAP were derived analytically as the function of the numb…
Power box is a component which is used in earth movers. It controls the power circuit. It has top cover, front cover, back cover and side panel. The aim of the paper is to create the L&T power box side panel by using parametric pro/E wild fire 5.0. The part modeling, Core-cavity design, CNC manufacturing programming a…