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論文
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保田, 啓輔 ; 関, 啓明 ; 神谷, 好承 ; 疋津, 正利 ; Yasuda, keisuke ; Seki, Hiroaki ; Kamiya, Yoshitsugu ; Hikizu, Masatoshi
概要:
金沢大学理工研究域フロンティア工学系<br />Mobile robots often have ultrasonic sensors to detect objects and environment. Sensors are arran
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ged around the robot′s bodies or scanned by some actuators. However, they have problems that they obtain only 2-D information or take much time to scan. Then, 3-D ultrasonic sonar system that can acquire 3-D reflect points at one time is proposed. An Electric spark that works as a non-directional point source of ultrasound is utilized to achieve this system.<br />人間の存在する屋内で移動ロボットに周囲の環境を把握させるための超音波を用いたセンサシステムを提案する.従来は,送受信センサをロボットの円周に配置したり,アクチュエーターで走査するシステムが多い.それらは2次元の情報しか得られない,走査に時間がかかるなどの問題点がある.そこで、火花放電の際に発生する超音波が無指向性近似できることを利用し,1回の送受信で3次元の反射点情報が得られるシステムを提案する.<br />出版者照会後に全文公開
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論文
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Takino, Takahisa ; Sato, Hiroshi ; Seiki, Motoharu ; 滝野, 隆久
概要:
金沢大学国際基幹教育院GS教育系 / Institute of Liberal Arts and Science<br />A modified invasion assay using a three-dimensional collag
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en gel was developed that enables isolation of invasive living cells; it was named the invading cell trapping (iCT) assay. A small cell strainer consisting of a nylon mesh with 40-μm2 pores was used, and collagen gel layers formed across the membrane. Test cells were seeded in the lower gel layer and invasive cells were attracted upward and trapped in the upper gel. After incubation, the collagen gel layers in cell strainers were easily separated and living cells in the gel were counted and analyzed. An advantage of the iCT assay is that it can capture living invasive cells in the upper gel while leaving noninvasive ones in the lower layer. Further enrichment of the two cell populations can be achieved by repeating the assay. Thus, the iCT assay allows comparative analysis of invasive versus noninvasive cells.
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