オーディオテープ, ビデオテープおよびフロッピーディスク等の磁気記録材料に鉄の酸化物が用いられていることは, 一般的によく知られている。本研究では, 中の主な成分である鉄および鉄の酸化物及び添加物として加えられている他の金属元素を試料とした分析実験の教材化の検討を行ったので, その結果の概要を報告する。

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A medium that is most frequently used in medical education is the 35mm-mounted slide. The Tokyo Women's Medical College Library has already purchased the complete set of the Ciba collection medical illustrations's slides and the Sobotta-Atlas of human anatomy's slides.
In arranging them, we put the same number (access number) on 1, 2 and 3. And each slide may be retrieved by using the number.
1. A slide's mount
2. A plate in these books
3. A slide file (Visual filing: SLIDEX)

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Thin magnetic recording tapes using a PET substrate were prepared in five types of electroless plating solutions. The recording, mechanical and corrosion characteristics of these tapes were investigated.
The electroless Co-P plated tapes exhibited high coercivity, with a maximum of about 80, 000A/m at a thickness of 0.1μm; response at frequencies above 5kHz was better than that of γ-Fe₂O₃ type tapes.
The fracture elongation of the Co-P plated tapes was higher than that of vapor-deposited metal tape.
The magnetic moment of the films decreased at a low rate as 3-5% per week on exposure to a humidity-resistance test environmet of 90% at 313K.

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ガス(液体)クロマトグラフのデータ処理装置に,マイクロプロセッサーを適用,小形で安価ではあるが,コンピューターシステムに近い高性能なデータ処理装置が開発できた.
本装置は,主としてアナログディジタル変換器,マイクロプロセッサー,半導体メモリー,メモリー,表示装置などで構成されている.を128k語の補助メモリーとして使用し,データ処理に必要なプログラムなどはすべてこのテープに入れておき,分析に必要なものだけをその都度半導体メモリーに自動的に移し替えて使用する方式を採ることにより,データ処理装置の機能を大幅に拡大することができた.

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Prof. IKEGAMI Jirō (1920-2011 ; Professor Emeritus, Hokkaido University) is a linguist who conducted extensive studies on northern languages from the 1940s to the 2000s. He made remarkable contributions especially to the study of the Tungusic languages. Many of his published works are descriptive studies on Manchu and Uilta (formerly known as Orok) among the Tungusic languages. Hokkaido Museum of Northern Peoples has a collection of Prof. IKEGAMI’s former library materials, donated by his bereaved family. This collection is called Ikegami Bunko. The present article provides a list of all 286 sound materials in the Ikegami Bunko that he used in his research and studies. This list is not intended to present the audio contents recorded on each medium, but rather the (often handwritten) entries on the cases and labels. When the contents seem to be related to Prof. IKEGAMI’s publications and/or his notebooks, some references have been added so that they can be checked against them. The list of all 158 notebooks in the Ikegami Bunko was provided by the present author as a report “Prof. IKEGAMI Jirō’s Notebooks in the Collection of Hokkaido Museum of Northern Peoples (a List with References)” (Bulletin of the Hokkaido Museum of Northern Peoples 31, pp.85-115. 2022).

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NHKでは, 膨大な量のVTR素材を編集し, 放送用完成テープを制作する過程で, オフラインカセット編集手法が通常用いられているが, その編集ずみから編集情報をいかに短時間に, しかも正確に収集するかが, これまでの課題であった. 本装置は, 編集アドレスの不連続点から編集データを自動収集する目的で開発したものであり, この装置の開発によって所期の目的を果し, 現在「NHK特集」などの番組で大いに偉力を発輝している.

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低価格・統一規格のMSXパソコンに,ADコンバータやタイムカウンターを接続して,高校物理全般の実験で測定器として使う研究開発を行った.付加装置はの大きさの基板にまとめ,ROMスロットに挿入して使う.プログラムはROM化して,オートスタートをかけることで,専用の測定器と同じ使い勝手とすることができた.各種センサーとプログラムにより,ほとんどの物理実験に有用な測定器として使える.

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A cassette-tape long-term (up to 24 hours) ECG recorder and high-speed analyzer for the tape has been designed and developed experimentally. By using modern electronics technology, such as integrated circuits, shift register and phase shiftless filter, the developed system has proved to have characteristics which are more or less satisfactory. The high-lights of the system : i) the heart-rate is given by each beat-to-beat interval rather than by an averaging of a certain period, ii) -recording and analysis are carried out by two channels rather than one, iii) phase shiftless filter is utilized, and iv) ST deviation is detected and recorded on time scale. By using the system, 78 recording and analysis sessions were held with clinical cases and with healthy subjects as well, and the usefulness of the system was proven in detecting and counting episodes including extrasystoles, atrioventricular block and ST segments deviation. Problems encountered and possible means for their solution, too, are described.

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