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Foreword ------- p.2

Shin-ei Ogawa

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New Glass Research Topics

Applications of new glass materials to optical integrated circuits ------- p.4

Toshiaki Suhara

Hiroshi Nishihara

Leaching mechanism and long-term stability of glass containing high level radioactive wastes ------- p.12

Ryohei Terai

Glass-ceramic dental restoration materials ------- p.22

Tsuneo Manabe

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Introductory Lecture

Glass as biomaterials ------- p.27

Tadashi Kokubo

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Proceedings of the NGF Seminars10th Seminar on Glass as Reinforced Materials

On the fiber of oxynitride glass ------- p.33

Tadao Shimizu

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Proceedings of the NGF Seminars14th Seminar on Mechanical and Chemical Processing of Glass

Washing of glass ------- p.43

Susumu Tsuji

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Proceedings of the NGF Seminars15th Seminar on Environmental Properties of Optical Fibers

The cause of radiation induced degradation in optical fibers ------- p.51

Kaya Nagasawa

Transmission loss behavior of optical fibers in hydrogen atmosphere ------- p.57

Kazuo Sanada

Characteristics of optical fibers at high and low temperatures ------- p.62

Ryozo Yamauchi

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News Digest

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Technical Terms

Polarization-maintaining optical fiber¡ÝPANDA type ------- p.69

Toshiaki Shibata

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Domestic Topics

New glass in some physics societies meetings ------- p.70

Yoshiyuki Asahara

27th workshop on science of ceramics ------- p.73

Kohei Fukumi

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New Products

Viscometer with parallel plates ------- p.75

Ryohei Terai

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Call on MembersUNITIKA ------- p.77

Takeshi Morikawa

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Association News¡¿Notice for Members

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