37 research outputs found

    Light-induced propulsion of a giant liposome driven by peptide nanofibre growth

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    Light-driven nano/micromotors are attracting much attention, not only as molecular devices but also as components of bioinspired robots. In nature, several pathogens such as Listeria use actin polymerisation machinery for their propulsion. Despite the development of various motors, it remains challenging to mimic natural systems to create artificial motors propelled by fibre formation. Herein, we report the propulsion of giant liposomes driven by light-induced peptide nanofibre growth on their surface. Peptide-DNA conjugates connected by a photocleavage unit were asymmetrically introduced onto phase-separated giant liposomes. Ultraviolet (UV) light irradiation cleaved the conjugates and released peptide units, which self-assembled into nanofibres, driving the translational movement of the liposomes. The velocity of the liposomes reflected the rates of the photocleavage reaction and subsequent fibre formation of the peptide-DNA conjugates. These results showed that chemical design of the light-induced peptide nanofibre formation is a useful approach to fabricating bioinspired motors with controllable motility

    21342 Measurements of dry shrinkage and its effect to seismic ability for a base isolated building Part 2 Effect to seismic ability

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    Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants 2001, 683-684, 20010731 / Architectural,Institute of Japan日本建築学会大会学術講演梗概集(関東)2001年9月rights:日本建築学会 rights: 本文データは学協会の許諾に基づきCiNiiから複製したものである relation: isVersionOf: http://ci.nii.ac.jp/naid/11000656069

    多職種連携による作業療法活動への積極的動機付け

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    Patients with mental health problems in long-term hospitalization have severe impairments and disabilities in their daily social life, thereby needing constant assistance. The purpose of this study was to clarify the relationships between the status of the improved duration of participation in occupational therapy activities through active motivation and interdisciplinary collaboration in enhancing mental health and severe physical functional level as evaluated by the Global Assessment of Function(GAF)score. Subjects were175hospitalized patients in psychiatric units at a Psychiatric hospital in Kagawa Prefecture. The duration of participation in the occupational therapy group activities was divided into Groups A-0‐5, B-6‐10, C-11‐15, and D-16‐20times per month. The number of the occupational therapy group activities per month was 20 times in August 2017 and 21 times in March2018, respectively. The number of classified four group participants before and after were calculated by the chi-square test with adjusted residuals. Comparing the number of participants in the four groups before and after 7 months by the active motivation, the number of participants was significantly decreased in group C but was increased in group D(χ2 = 6.82, p <.05). Findings show the number of participants was increased because of the active motivation by interdisciplinary collaboration and enhanced relations. However, the degree of GAF was not related to the duration of participation times. Moreover, it was clearly found that respect for individuality and patient’s will were critical motivational factors in effective patient participation

    21341 Measurements of dry shrinkage and its effect to seismic ability for a base isolated building : Part 1 Comparison with measured dry shrinkage values and calculated values

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    Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural dynamics nuclear power plants 2001, 681-682, 20010731 / Architectural,Institute of Japan日本建築学会大会学術講演梗概集(関東)2001年9月rights:日本建築学会 rights: 本文データは学協会の許諾に基づきCiNiiから複製したものである relation: isVersionOf: http://ci.nii.ac.jp/naid/11000656069

    Angular dependence of coercivity derived from alignment dependence of coercivity in Nd-Fe-B sintered magnets

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    Experimental results of the alignment dependence of the coercivity in Nd-Fe-B sintered magnets showed that the angle of magnetization reversal for anisotropically aligned magnets was bigger than that obtained from the theoretical results calculated using the postulation that every grain independently reverses its magnetization direction following the 1/cos θ law. The angles of reversed magnetization (θ1) for Nd13.48Co0.55B5.76Febal. with alignment α=0.95 and for Nd12.75Dy0.84B5.81Co0.55Febal. with α=0.96 were 30° and 36°, respectively, which were very similar to that of an ideal magnet with a Gaussian distribution (σ=31° and 44°, respectively) of the grain alignment. In this model, we postulated that every grain independently reversed according to the 1/cos θ law. The calculation results for the angular dependence of the coercivity using the values θ1=ω1(0°)=30°, σ=31° and θ1=ω1(0°)=36°, σ=44° could qualitatively and convincingly explain the observed angular dependence of the coercivity of Nd14.2B6.2Co1.0Febal. and Nd14.2Dy0.3B6.2Co1.0Febal.. It is speculated that the magnetic domain wall is pinned at grains tilted away from the easy magnetization direction, and when the magnetic domain wall de-pins from the tilted grains, the magnetic domain wall jumps through several grains. We suggest that the coercive force of the aligned magnet behaves like a low-aligned magnet owing to the magnetization reversal of the crust of the grains induced by the pinning and subsequent jumping of the magnetic domain wall

    Angular dependence of coercivity in isotropically aligned Nd-Fe-B sintered magnets

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    In order to understand the coercivity mechanism in Nd-Fe-B sintered magnets, the angular dependence of the coercivity of an isotropically aligned Nd15Co1.0B6Febal. sintered magnet was investigated through magnetization measurements using a vibrating sample magnetometer. These results are compared with the angular dependence calculated under the assumption that the magnetization reversal of each grain follows the Kondorskii law or, in other words, the 1/cos θ law for isotropic alignment distributions. The calculated angular dependence of the coercivity agrees very well with the experiment for magnetic fields applied between angles of 0 and 60°, and it is expected that the magnetization reversal occurs in each grain individually followed the 1/cos θ law. In contrast, this agreement between calculation and experiment is not found for anisotropic Nd-Fe-B samples. This implies that the coercivity of the aligned magnets depends upon the de-pinning of the domain walls from pinning sites. When the de-pinning occurs, it is expected that the domain walls are displaced through several grains at once

    Experimental Study on Joint of Steel Framed Braces and Existing Buildings

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    日本建築学会大会学術講演梗概集(関東)2006年9月rights:日本建築学会 rights: 本文データは学協会の許諾に基づきCiNiiから複製したものである relation: isVersionOf: http://ci.nii.ac.jp/naid/11000630889
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