Academic literature on the topic 'Zipping motion'

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Journal articles on the topic "Zipping motion"

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Seki, Yusuke, and Akio Yamamoto. "An Arch-Shaped Electrostatic Actuator for Multi-Legged Locomotion." Robotics 13, no. 9 (2024): 131. http://dx.doi.org/10.3390/robotics13090131.

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A simple actuator to create non-reciprocal leg motion is imperative in realizing a multi-legged micro-locomotion mechanism. This work focuses on an arch-shaped electrostatic actuator as a candidate actuator, and it proposes the operation protocol to realize a non-reciprocal trajectory. The actuator consists of two hard and flexible sheets and a leg attached to the flexible sheet. The flexible sheet is deformed through an electrostatic zipping motion that changes the height and/or angle of the attached leg. The fabricated prototype weighed 0.1 g and swung about 15 degrees with the applied volta
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Houston, Adam L., and Robert B. Wilhelmson. "Observational Analysis of the 27 May 1997 Central Texas Tornadic Event. Part I: Prestorm Environment and Storm Maintenance/Propagation." Monthly Weather Review 135, no. 3 (2007): 701–26. http://dx.doi.org/10.1175/mwr3300.1.

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Abstract A detailed analysis of the 27 May 1997 central Texas tornadic storm complex is undertaken in an attempt to document the prestorm environment and identify the roles played by preexisting boundaries on storm maintenance/propagation and rotation. Analysis is carried out using a broad suite of synoptic and subsynoptic data but focuses on the level-II and -III Weather Surveillance Radar-1988 Doppler (WSR-88D) data from three Texas radars. The 27 May 1997 event was characterized by a back-building (propagation against the mean flow) storm complex that produced at least 12 tornadoes includin
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Imafuku, Yasuhiro, and Neil Thomas. "1P195 Zipping dynamics of RNA hairpin and kinesin neck liner(Molecular motor,The 48th Annual Meeting of the Biophysical Society of Japan)." Seibutsu Butsuri 50, supplement2 (2010): S53. http://dx.doi.org/10.2142/biophys.50.s53_5.

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Fung, Jennifer C., Wallace F. Marshall, Abby Dernburg, David A. Agard, and John W. Sedat. "Homologous Chromosome Pairing in Drosophila melanogaster Proceeds through Multiple Independent Initiations." Journal of Cell Biology 141, no. 1 (1998): 5–20. http://dx.doi.org/10.1083/jcb.141.1.5.

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The dynamics by which homologous chromosomes pair is currently unknown. Here, we use fluorescence in situ hybridization in combination with three-dimensional optical microscopy to show that homologous pairing of the somatic chromosome arm 2L in Drosophila occurs by independent initiation of pairing at discrete loci rather than by a processive zippering of sites along the length of chromosome. By evaluating the pairing frequencies of 11 loci on chromosome arm 2L over several timepoints during Drosophila embryonic development, we show that all 11 loci are paired very early in Drosophila developm
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Tomishige, Michio, and Ronald D. Vale. "Controlling Kinesin by Reversible Disulfide Cross-Linking." Journal of Cell Biology 151, no. 5 (2000): 1081–92. http://dx.doi.org/10.1083/jcb.151.5.1081.

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Conventional kinesin, a dimeric molecular motor, uses ATP-dependent conformational changes to move unidirectionally along a row of tubulin subunits on a microtubule. Two models have been advanced for the major structural change underlying kinesin motility: the first involves an unzippering/zippering of a small peptide (neck linker) from the motor catalytic core and the second proposes an unwinding/rewinding of the adjacent coiled-coil (neck coiled-coil). Here, we have tested these models using disulfide cross-linking of cysteines engineered into recombinant kinesin motors. When the neck linker
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Houston, Adam L., and Robert B. Wilhelmson. "The Impact of Airmass Boundaries on the Propagation of Deep Convection: A Modeling-Based Study in a High-CAPE, Low-Shear Environment." Monthly Weather Review 140, no. 1 (2012): 167–83. http://dx.doi.org/10.1175/mwr-d-10-05033.1.

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Abstract A suite of experiments conducted using a cloud-resolving model is examined to assess the role that preexisting airmass boundaries can play in regulating storm propagation. The 27 May 1997 central Texas tornadic event is used to guide these experiments. The environment of this event was characterized by multiple preexisting airmass boundaries, large CAPE, and weak vertical shear. Only the experiments with preexisting airmass boundaries produce back-building storm propagation (storm motion in opposition to the mean wind). When both the cold front and dryline are present, storm maintenan
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Krishnan, A., M. E. Bisher, and M. M. J. Treacy. "In-Situ TEM Study of Domain Propagation in Ferroelectric Barium Titanate, and Its Role in Fatigue." MRS Proceedings 541 (1998). http://dx.doi.org/10.1557/proc-541-475.

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AbstractWe have conducted in-situ transmission electron microscopy (TEM) experiments on thinned single crystal barium titanate in order to study the effects of applied electric field, temperature, electron beam irradiation and UV irradiation on domain nucleation and propagation. We observe two basic modes of domain wall motion; (i) a lateral motion which uniformly widens or narrows the total domain width; (ii) a “zipping” motion in which one end of a domain narrows to a point, which then propagates lengthwise, widening (or narrowing) the domain behind it. Both domain creation and destruction c
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Walter, J. C., A. Ferrantini, E. Carlon, and C. Vanderzande. "Fractional Brownian motion and the critical dynamics of zipping polymers." Physical Review E 85, no. 3 (2012). http://dx.doi.org/10.1103/physreve.85.031120.

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Hou, Ningzhe, Jian Wen, Yuhan Pan, and Majid Taghavi. "Origami‐Inspired Modular Electro‐Ribbon Actuator for Multi‐Degrees of Freedom Motion." Advanced Intelligent Systems, April 8, 2024. http://dx.doi.org/10.1002/aisy.202300738.

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Origami robots, inspired by an ancient form of paper folding art, are capable of achieving high displacement in a lightweight and compact design that conventional robots can hardly attain. It, however, remains a challenge to drive origami robots with in situ active materials that imply minimal added mass and complexity and can be easily controlled to achieve multiple actuation modalities. Herein, inspired by the Twisted Tower origami structure, dielectrophoretic liquid zipping actuation concept is employed to develop a modular architecture, capable of achieving complicated motions with multipl
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Goodwin-Schoen, Caleigh M., and Rebecca E. Taylor. "Modular, Articulated Models of DNA and Peptide Nucleic Acids for Nanotechnology Education." Biophysicist, April 11, 2023. http://dx.doi.org/10.35459/tbp.2022.000225.

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ABSTRACT Dynamic and flexible nucleic acid models can provide current and future scientists with physical intuition for the structure of DNA and the ways that DNA and its synthetic mimics can be used to build self-assembling structures and advanced nanomachines. As more research labs and classrooms dive into the field of structural nucleic acid nanotechnology, students and researchers need access to interactive, dynamic, handheld models. Here, we present a 3D-printable kit for the construction of DNA and peptide nucleic acid (PNA). We have engineered a previous modular DNA kit to reduce costs
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Dissertations / Theses on the topic "Zipping motion"

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Sîrbu, Ion-dan. "Liquid-based electroactive polymers (LEAP) for a new class of soft actuators and generators." Doctoral thesis, Università degli studi di Trento, 2023. https://hdl.handle.net/11572/364692.

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Future robotic systems will be pervasive technologies operating autonomously in unknown spaces that are shared with humans. Such complex interactions make it compulsory for them to be lightweight, soft, and efficient in a way to guarantee safety, robustness and long-term operation. This set of qualities can be achieved using soft multipurpose systems that combine, integrate and commute between conventional electromechanical and fluidic drives, as well as harvest energy during inactive actuation phases for increased energy efficiency. Recent research work has shown that dielectric fluids with s
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Books on the topic "Zipping motion"

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Pearson, Debora. Alphabeep: A zipping, zooming ABC. Holiday House, 2003.

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Pearson, Debora. Alphabeep!: A Zipping, Zooming ABC. Holiday House, 2006.

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Conference papers on the topic "Zipping motion"

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Guo, Dongzhi, Jingsheng Gao, Alan J. H. McGaughey, et al. "Design and Evaluation of MEMS-Based Stirling Cycle Micro-Refrigeration System." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63084.

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A Stirling cycle micro-refrigeration system composed of arrays of silicon MEMS cooling elements has been designed and evaluated thermodynamically. The cooling elements are each 5 mm-long, 2.25 mm-wide, have a thickness of 300 μm, and are fabricated in a stacked array on a silicon wafer. A 0.5 mm-long regenerator is placed between the compression (hot side) and expansion (cold side) diaphragms. The diaphragms are 2.25 mm circles driven electrostatically. Helium is the working fluid, pressurized at 2 bar and sealed in the system. Under operating conditions, the hot and cold diaphragms oscillate
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Tanaka, Yuki, and Hiroyuki Takahira. "Effects of Phospholipid Layers on the Motion of Microbubbles Under Pressure Variations." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-33011.

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The shrinking and growth of microbubbles under pressure variations are observed with a CCD camera. The influence of gas diffusion on the stability of microbubbles covered with phospholipid layers is investigated. The microbubbles are made with acoustic liposomes encapsulating phosphate buffer solution and perfluoropropane gas. It is shown that when the ambient liquid pressure increases, the observed microbubbles shrink accompanied with the cyclic surface buckling and smoothing process. The bubble surface smoothing in the process shows that the excess phospholipid layers are removed from the su
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