Polypropylene/Multiwall carbon nanotubes/Montmorillonite (PP/MWNTs/MMT) hybrid nanocomposites were prepared by using twin-screw extruder incorporating the polypropylene grafted maleic anhydride (PP-g-mA) as compotibilizer is used for better dispersion of nanoclay in the polymer matrix. The effect of MWNTs and MMT on the polypropylene matrix was investigated in terms of mechanical properties of ...

To determine if posterior chamber polymethylmethacrylate lenses with polypropylene loops activate complement, the authors measured levels of C3a, C4a and C5a by radioimmunoassay in human sera incubated with and without these lenses. Human sera incubated with intraocular lenses showed elevated levels of C3a and C5a but no change in C4a. There were no statistically significant differences in the ...

Aqueous biphasic catalysis is a convenient approach to convert organic, partially soluble molecules in water. However, converting more hydrophobic substrates is much more challenging as their solubility in water is extremely low. During the past ten years, substantial progress has been made towards improving the contact between hydrophobic substrates and a hydrophilic transition-metal catalyst....

This paper argues that Information Technology (IT) needs to be demystified, through critical consciousness, for educators to focus on IT as a means to enhance learning. It goes on to define the technical, sociohistorical and political-ideological levels of IT and to identify four theoretical constructs: tutorial, machine-as-human, tool kit and catalyst. Pervading these constructs is the underst...

Imagine an industrialist and his design team relatively aware of the developments in the research with nano-fillers asking themselves: What can we do with nano-composites and make a net profit up to the ‘promises’ of the current state of the art? Research announced potential areas of interest for practical applications include mechanical performance, toughness improvement, surface hardening, fi...

Alkaline-earth-metal ions accelerate the breaking of cellulose bonds and control distribution products in pyrolysis lignocellulose to biofuels chemicals. Here, activation via magnesium was measured over a range temperatures from 370 430 °C for 20–2000 ms compared with calcium, another naturally occurring alkaline earth metal materials. The experimental approach pulse-heated analysis solid/surfa...

Incisional hernia is the most common postoperative complication, affecting up to 20% of patients after abdominal surgery. Insertion of a synthetic surgical mesh has become the standard of care in ventral hernia repair. However, the implementation of a mesh does not reduce the risk of recurrence and the onset of hernia recurrence is only delayed by 2-3 years. Nowadays, more than 100 surgical mes...

1.はじめに CGで現実感のある画像を生成する技術は、いかにして物体を 忠実に表現するかの技術である。物体を特徴付ける要素として は、大きく分けて、物体の形状と、物体表面の色情報や光学属 性などの表面属性がある。物体の表面属性を表現する場合、一 般的には、バンプマッピングなどのさまざまなマッピング手法 がとられている。CGデザイナがマッピングに利用できる素材と しては、市販の CD-ROM やインターネット経由で入手できる素 材集、およびテクスチャ生成のプログラムから出力されるデー タなどがある。 本報告で取り扱う石畳を表現する場合、CGデザイナが路面の 敷石を1つ1つモデリングして表現することが理想ではある が、大変な労力を要するため現実的ではない。一方、石畳の写 真素材を路面にマッピングして表現することも可能であるが、 以下のような問題が生ずる。 ・テクスチャ全体として凹凸が激し...

The hfarerirds Science Cimrion Index w on CD-ROM, a new specialty index launched by the Institute for Scientific Information’@, is discussed. The index contains searchable author abstracts,