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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

A reversibly antigen-responsive hydrogel

Article Abstract:

It has been possible to develop a hydrogel which swells reversibly in a buffer solution in response to a specific antigen. This was achieved by grafting the antigen and corresponding antibody to the polymer network, with binding between the two introducing crosslinks in the network. It was established that the semi-interpenetrating network (IPN) structure appears to be significant in the reversibility of the antigen-responsive swelling changes. As the hydrogel was prepared by copolymerizing with vinyl(rabbit immunoglobulin G), which forms a complex with the polymerized goat anti-rabbit immunoglobulin G, the resulting semi-IPN hydrogel can memorize the shape of its initial semi-IPN structure.

Author: Miyata, Takashi, Asami, Noriko, Uragami, Tadashi
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Colloids

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An early extrasolar planetary system revealed by planetesimal belts in beta Pictoris

Article Abstract:

A report on the sub-resolution mid-micrometer amorphous silicate grains around beta Pictoris have peaks in their distribution around 6, 16 and 30 AU whereas the crystalline and micrometer-sized amorphous silicate grains are concentrated in the disk center. The study concludes that beta Pictoris system is likely to be at a violent planetesimal collision stage in an early solar system.

Author: Okamoto, Yoshiko Kataza, Kataza, Hirokazu, Honda, Mitsuhiko, Onaka, Takashi, Watanabe, Jun-ichi, Miyata, Takashi, Sako, Shigeyuki, Sakon, Itsuki
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
United States, Science & research, Astronomical research, Extrasolar planets, Planetary systems

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No high-mass protostars in the silhouette young stellar object M17-S01

Article Abstract:

The protostar in M17, which has an intermediate mass of only 2.5 to 8 solar masses contrary to the earlier claim of 20M, is demonstrated. It is found that the surrounding circumstellar envelope contains only 0.09M and a much more extended local molecular cloud has 4-9M.

Author: Kataza, Hirokazu, Honda, Mitsuhiko, Onaka, Takashi, Miyata, Takashi, Sako, Shigeyuki, Okamoto, Yoshiko K., Fujiyoshi, Takuya, Zhibo Jiang, Yamashita, Takuya, Terada, Hiroshi, Hanawa, Tomoyuki
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
Measurement, Observations, Solar system, Mass loss (Astrophysics)

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Subjects list: Research
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