Relevant bibliographies by topics / S-twist

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'S-twist'

Author: Grafiati
Published: 3 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "S-twist"

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Scruby, T. R., and D. E. Browne. "A Hierarchy of Anyon Models Realised by Twists in Stacked Surface Codes." Quantum 4 (April 6, 2020): 251. http://dx.doi.org/10.22331/q-2020-04-06-251.

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Braiding defects in topological stabiliser codes can be used to fault-tolerantly implement logical operations. Twists are defects corresponding to the end-points of domain walls and are associated with symmetries of the anyon model of the code. We consider twists in multiple copies of the 2d surface code and identify necessary and sufficient conditions for considering these twists as anyons: namely that they must be self-inverse and that all charges which can be localised by the twist must be invariant under its associated symmetry. If both of these conditions are satisfied the twist and its s
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Hikmaharyanti, Putu Desi Anggerina, I. Gusti Agung Sri Rwa Jayantini, and Ni Made Verayanti Utami. "A STUDY OF OLIVER TWIST INFERIORITY ON CHARLES DICKENS’S OLIVER TWIST." Apollo Project: Jurnal Ilmiah Program Studi Sastra Inggris 10, no. 2 (2021): 57–66. http://dx.doi.org/10.34010/apollo.v10i2.5306.

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This study focuses on Oliver Twist inferiority feeling during his childhood life. Oliver Twist as the main character of the novel experienced several miserable treatments from people around him. Along with the inferiority feeling, unfortunately it brings some effects towards him. This is the reason of why this study created by describing the inferiority feelings together with the impact qualitatively. Since the study is in literature matter, psychological and sociological approaches were applied to elaborate the inferior feeling experienced by the main character. There were five settings where
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Cui, Hong, and Chong Wen Yu. "Influence of Spinning Speed at Self-Twist Spinning System on Yarn Quality." Advanced Materials Research 332-334 (September 2011): 560–63. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.560.

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The effect of spinning speed on yarn quality at self-twist spinning system was investigated. The yarns were assessed for different characteristics using objective tests. The results show that yarn hairiness of self-twist yarn increases with the increase of spinning speed and yarn tenacity and extension decrease with increment of spinning speed. The results also show that yarn irregularity, yarn imperfections and yarn twist level have no obvious changes with the increasing in spinning speed. Furthermore, the longitudinal and cross-sectional shape of self-twist yarn were observed and the picture
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Roy, N., K. Y. Oh, M. D. Kettler, L. A. Tudorica, and W. Huang. "High spatial and temporal resolution breast DCE-MRI: A feasibility study." Journal of Clinical Oncology 29, no. 27_suppl (2011): 74. http://dx.doi.org/10.1200/jco.2011.29.27_suppl.74.

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74 Background: The typical 1-2 min low temporal resolution (tRes) of conventional gradient-echo (GRE) breast dynamic contrast-enhanced (DCE) MRI precludes accurate quantitative pharmacokinetic (PK) analysis. The commercially available GRE-based TWIST (time-resolved angiography with stochastic trajectories) sequence employs an alternative k-space sampling scheme to provide high spatial and temporal resolution for dynamic imaging, originally intended for time-resolved MR angiography. Here we sought to evaluate the feasibility of breast DCE-MRI with the TWIST sequence, using both tumor morphology
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Guo, Mingrui, Fengxin Sun, Lei Wang, Yuan Xue, Ruihua Yang, and Weidong Gao. "Analysis of the appearance of two-color cotton yarn by the double-channel spinning system." Textile Research Journal 89, no. 9 (2018): 1712–24. http://dx.doi.org/10.1177/0040517518779250.

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The main aim of this paper is to investigate the fiber distribution on the surface of a kind of novel two-color yarn spun by regulating the feeding ratio of two colored rovings on a modified ring spinning frame, which is named the double-channel spinning frame. The surface distribution ratio ( SDR) and the coefficient of variation of surface distribution evenness ( CV sd) of the two colored fiber strands in the yarns was used to quantify the fiber distribution feature along the yarns based on a purpose-made image acquisition device and the corresponding image processing method. The effect of t
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Thangjam, Roshini and Sharan Madhu. "Incorporating Pineapple Leaf Fiber into Meitei Traditional Textiles: A Cultural and Sustainable Perspective." Journal Of The Textile Association (JTA) 85, no. 3 (2024): 1–6. https://doi.org/10.5281/zenodo.14273495.

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This study explores the application of pineapple leaf fiber (PALF) yarns for traditional Meitei textiles, focusing on Rani Phi and Muga Phanek garments. PALF was used to replace conventional materials, aiming to enhance sustainability and preserve cultural heritage. Fabric samples were produced in manageable sizes—for Rani Phi and Muga Phanek. Rani Phi featured a union plain weave with extra weft rayon yarns (242D), traditional motifs, and a color scheme of undyed white warp (silk-50's with Z twist) and creamy weft (PALF yarn-30's with Z twist) with red ornamentation. The fabric demonstr
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AGAEV, SHAHIN S. "VECTOR MESON-HADRON COLLISIONS: LARGE INVARIANT MASS AND TRANSVERSE MOMENTUM LEPTON PAIR PRODUCTION." International Journal of Modern Physics A 09, no. 29 (1994): 5077–95. http://dx.doi.org/10.1142/s0217751x94002053.

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In the framework of factorized perturbative QCD, higher twist mesonic binding effects in lepton pair production in vector meson-hadron collisions are investigated. A general expression for the higher twist contributions is derived. As an example, these contributions are calculated in the case of the ρ meson-proton collision and comparisons are made to leading twist ones. It is shown that the higher twist contributions induced by a transversely polarized ρT meson are large for all values of the dilepton transverse momentum pT (2 GeV≤pT≤6 GeV). In the kinematic regimes τ=Q2/S→1 or xF→1, the high
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Jess, D. B., R. T. J. McAteer, M. Mathioudakis, F. P. Keenan, A. Andic, and D. S. Bloomfield. "Twisting flux tubes as a cause of micro-flaring activity." Proceedings of the International Astronomical Union 3, S247 (2007): 360–63. http://dx.doi.org/10.1017/s1743921308015093.

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AbstractHigh-cadence optical observations of an H-α blue-wing bright point near solar AR NOAA 10794 are presented. The data were obtained with the Dunn Solar Telescope at the National Solar Observatory/Sacramento Peak using a newly developed camera system, the rapid dual imager. Wavelet analysis is undertaken to search for intensity-related oscillatory signatures, and periodicities ranging from 15 to 370 s are found with significance levels exceeding 95%. During two separate microflaring events, oscillation sites surrounding the bright point are observed to twist. We relate the twisting of the
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Hahn, Josef, and Tina Nataniel. "Synthese und Eigenschaften von 3,6-Diorgano-3,6-dithio-1,2,4,5,3,6-tetrathiadiphosphorinanen; eine neue Möglichkeit zur Knüpfung von S—S-Bindungen / Synthesis and Properties of 3,6-D iorgano-3,6-dithio-1,2,4,5,3,6-tetrathiadiphosphorinanes; a New Possibility of Forming S—S Bonds." Zeitschrift für Naturforschung B 42, no. 10 (1987): 1263–67. http://dx.doi.org/10.1515/znb-1987-1010.

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Abstract The six-membered sulfur-phosphorus heterocycles 3,6-diorgano-3,6-dithio-1,2,4,5,3,6-tetrathiadiphosphorinanes (RP(S)S2)2 (R = Me 1a and R = t-Bu 1b ) are formed in high yields from the silyl esters of the corresponding trithiophosphonic acids RP(S)(SSiMe3)2 and dimethylsulfoxide. They are fairly stable in the crystalline state. In solution sulfur elimination occurs, which in the case of l a leads to the formation of 3,5-dimethyl-3,5-dithio-1,2,4,3,5-trithiadiphospholane, MeP(S)S2PMe(S)S (4). Likewise lb decomposes to give the corresponding dithiophosphonic acid anhydride (t-BuP(S)S)2.
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Fitrianto, Taufik Ramadhan, and Suhanan. "Simulation of performance enhancement of heat exchanger with twisted tapes using ANSYS software." Jurnal Teknik Mesin Indonesia 18, no. 2 (2023): 119–24. http://dx.doi.org/10.36289/jtmi.v18i2.454.

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Heat transfer effectiveness in a heat exchanger depends on the fluid flow through the exchanger. The heat transfer coefficient is directly proportional to the Nusselt number of the fluid flow. A higher Nusselt number indicates a greater heat transfer rate. The enhancement of heat transfer quality can be achieved by increasing the surface area for heat transfer, disrupting the boundary layer, and inducing swirl flow in the fluid. Twisted tape inserts are used in the heat exchanger to induce swirl flow. In this simulation, six types of inserts with a length of 2000 mm, width of 35 mm, and twist
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Dissertations / Theses on the topic "S-twist"

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Zacharias, Herman. "Let´s twist again: Elevers kollaborativa lärande på fritids." Thesis, Malmö högskola, Fakulteten för lärande och samhälle (LS), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-34121.

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Undersökningen tar utgångspunkt i en musikalisk aktivitet inom en fritidsverksamhet. Genom att belysa elevernas lärande från ett kollaborativt perspektiv, som tar fasta på hur kunskapen formas genom ett förhandlande i sociala processer, är syftet att försöka förstå vilka konsekvenser detta perspektiv får för synen på kunskap och lärande. Frågan om hur eleverna blir redskap för varandras lärande undersöks genom deltagande observation. Utifrån olika aspekter, såsom musikaliskt språk och kulturella referenser, framträder ett ömsesidigt beroende mellan eleverna men också mellan eleverna och det ma
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Herman, Tomáš. "Identifikace klopné tuhosti nápravy automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378016.

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This diploma thesis deals with roll stiffness of twist beam axle. There are described experi-mental and analytic methods of measuring, its applications and comparison on a particular type of axle. There is also construction plan of system usable for this measuring.
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Zwesperová, Žaneta. "Studie řízení zásob ve vazbě na výrobní proces." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2007. http://www.nusl.cz/ntk/nusl-221452.

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The aim of submitted thesis "The Study of Inventory Management in Connection with Manufacturing Process" is to analyze stock management system with relation to IS in chosen company. The first part of this diploma thesis is focused to the description of actual knowledge of inventory management and warehousing. Further I describe individual problems contextual to the actual situation and suggestions for inventory management optimization in company TWIST, spol. s r. o.. The purpose of this diploma thesis is to submit suitable suggestions, how to improve the processes.
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Garcia, Rodrigo Maselli Thom? "Fatores associados ao atraso no tratamento da s?ndrome do escroto agudo em crian?as e adolescentes." Pontif?cia Universidade Cat?lica de Campinas, 2018. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/1090.

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Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2018-05-04T14:27:54Z No. of bitstreams: 1 RODRIGO MASELLI THOM? GARCIA.pdf: 1139747 bytes, checksum: 918a44a313fb8cf1d56fef9b097af761 (MD5)<br>Made available in DSpace on 2018-05-04T14:27:54Z (GMT). No. of bitstreams: 1 RODRIGO MASELLI THOM? GARCIA.pdf: 1139747 bytes, checksum: 918a44a313fb8cf1d56fef9b097af761 (MD5) Previous issue date: 2018-02-28<br>Introduction: Acute Scrotum Syndrome is a medical emergency. Some children and adolescents cannot be cared for by a specialist or accustomed to this pathologica
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PIREDDU, MARINA. "Fixed points and chaotic dynamics for expansive-contractive maps in Euclidean spaces, with some applications." Doctoral thesis, Università degli Studi di Udine, 2009. http://hdl.handle.net/10281/46084.

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In this work we introduce a topological method for the search of fixed points and periodic points for continuous maps defined on generalized rectangles in finite dimensional Euclidean spaces. We name our technique "Stretching Along the Paths" method, since we deal with maps that expand the arcs along one direction. Such theory was developed in the planar case by Papini and Zanolin in [11,12] and it has been extended to the N-dimensional framework by the author and Zanolin in [16]. In the bidimensional setting, elementary theorems from plane topology suffice, while in the higher dimension so
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Tsai, Wei-Lun, and 蔡維倫. "The Rank of Twists of Elliptic Curves and Ken Ono''s Conjecture." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/12237752024588105952.

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碩士<br>國立臺灣大學<br>數學研究所<br>100<br>We review the theory of congruent numbers and Ken Ono&apos;&apos;s Conjecture. We also study the technique developed in [10] and then apply it to the congruent number problem.
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Books on the topic "S-twist"

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Schickele, Peter. Shepherd on the rocks, with a twist: (S. 12 to 1) for bargain counter tenor and devious instruments. T. Presser, 1989.

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(Illustrator), Alison Edgson, ed. Bear And Turtle And the Great Lake Race (Tales With a Twist S.). Child's Play International, 2006.

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Paper Games Paper Games Zone. Paper Games Zone : 3D Xs V. s Os : Fun Activity Book: New #d Twist! Independently Published, 2019.

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Farb, Benson, and Dan Margalit. Teichmuller Space. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.003.0011.

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This chapter deals with Teichmüller space Teich(S) of a surface S. It first defines Teichmüller space and a topology on Teich(S) before giving two heuristic counts of its dimension. It then describes explicit coordinates on Teich(Sɡ) coming from certain length and twist parameters for curves in a pair of pants decomposition of Sɡ; these are the Fenchel–Nielsen coordinates on Teich(Sɡ). The chapter also considers the Teichmüller space of the torus and concludes by proving the 9g – 9 theorem, which states that a hyperbolic structure on Sɡ is completely determined by the lengths assigned to 9g –
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Fish Earrings, Surgical Steel Wires S: The Use of Coiled Wires Gives This Line of Jewelry a Unique Twist That Will Appeal to Your Teen Customers. Soli. Bob Siemon Designs, 1999.

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Supplementary Catalogue of Wood Carvings, Mouldings, Rosettes, Newel Posts, Balusters, Twist Work, Capitals, Columns, Etc: Manufactured by Grand Rapids Wood Carving Company, Grand Rapids, Mich. , U. S. A. Creative Media Partners, LLC, 2021.

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Kehler, Andrew, and Jonathan Cohen. On Convention and Coherence. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198791492.003.0014.

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A bedrock principle in pragmatics is that the linguistic signals produced by speakers generally underdetermine the meanings that are communicated to interpreters. For Grice, for instance, utterance meaning lies close to what is overtly encoded, allowing only for the resolution of indexicals, tense, reference, and ambiguity. Lepore and Stone (L&amp;S) agree, but with a stunning twist: they analyze all extrasemantic content as being derived from ambiguity resolution, leaving no work for Gricean tools. Despite significant areas of concurrence with L&amp;S, we ultimately find their analysis to be
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Farb, Benson, and Dan Margalit. Dehn Twists. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.003.0004.

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This chapter deals with Dehn twists, the simplest infinite-order elements of Mod(S). It first defines Dehn twists and proves that they are nontrivial elements of the mapping class group. In particular, it considers the action of Dehn twists on simple closed curves. As one application of this study, the chapter proves that if two simple closed curves in Sɡ have geometric intersection number greater than 1, then the associated Dehn twists generate a free group of rank 2 in Mod(S). It also proves some fundamental facts about Dehn twists and describes the center of the mapping class group, along w
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Farb, Benson, and Dan Margalit. A Primer on Mapping Class Groups (PMS-49). Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.001.0001.

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The study of the mapping class group Mod(S) is a classical topic that is experiencing a renaissance. It lies at the juncture of geometry, topology, and group theory. This book explains as many important theorems, examples, and techniques as possible, quickly and directly, while at the same time giving full details and keeping the text nearly self-contained. The book is suitable for graduate students. It begins by explaining the main group-theoretical properties of Mod(S), from finite generation by Dehn twists and low-dimensional homology to the Dehn–Nielsen–Baer–theorem. Along the way, central
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Farb, Benson, and Dan Margalit. Presentations and Low-dimensional Homology. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.003.0006.

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This chapter presents explicit computations of the first and second homology groups of the mapping class group. It begins with a simple proof, due to Harer, of the theorem of Mumford, Birman, and Powell; the proof includes the lantern relation, a relation in Mod(S) between seven Dehn twists. It then applies a method from geometric group theory to prove the theorem that Mod(Sɡ) is finitely presentable. It also provides explicit presentations of Mod(Sɡ), including the Wajnryb presentation and the Gervais presentation, and gives a detailed construction of the Euler class, the most basic invariant
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Book chapters on the topic "S-twist"

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Gooch, Jan W. "S Twist." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11334.

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Méot, François. "FFAG, Scaling." In Particle Acceleration and Detection. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-59979-8_10.

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AbstractThis chapter is an introduction to Fixed-Field Alternating Gradient (FFAG) cyclic accelerators. It begins with a brief reminder of the historical and technological context, and continues with the theoretical material needed for the simulation exercises. It relies on charged particle optics and acceleration concepts introduced in the previous cyclotron and synchrotron chapters. Furthermore it addresses design aspects of scaling FFAGs, beam dynamics in radial- and spiral-sector rings, synchrotron acceleration and various other acceleration techniques. Simulations introduce dedicated keyw
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Méot, François. "FFAG, Linear." In Particle Acceleration and Detection. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-59979-8_11.

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AbstractThis chapter is an introduction to linear Fixed-Field Alternating Gradient (FFAG) cyclic accelerators. It begins with a brief reminder of the historical and technological context, and continues with the theoretical material needed for the simulation exercises. It relies on charged particle optics and acceleration concepts introduced in the previous synchrotron and scaling FFAG chapters and further addresses design aspects of linear FFAGs, diverse specificities of linear FFAG optics, beam dynamics in rings, serpentine acceleration. Simulations do not require specific keywords, they use
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"S twist." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_11131.

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"S-twist." In The Fairchild Books Dictionary of Textiles. Fairchild Books, 2021. http://dx.doi.org/10.5040/9781501365072.15803.

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"S-Twist." In Encyclopedic Dictionary of Archaeology. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58292-0_190001.

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Bensimon, David, Vincent Croquette, Jean-François Allemand, Xavier Michalet, and Terence Strick. "Structural Transitions in DNA." In Single-Molecule Studies of Nucleic Acids and Their Proteins. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198530923.003.0005.

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In this chapter we discuss the various structural transitions observed on dsDNA upon twisting and stretching: the transition to denatured DNA at negative twist and to P-DNA at positive twist; the transition to S-DNA at large force and its relation with DNA melting. We discuss mechanical unzipping of DNA and show how DNA rehybridization under tension in the presence of complementary oligonucleotides can be used to sequence the molecule.
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Robinson, Peter. "Lend-Lease and ‘The Dry Salvages’." In In the Circumstances About Poems and Poets. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198112488.003.0003.

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Abstract On 15 February 1941, T. S. Eliot wrote a letter to the editor of the New English Weekly, the paper in which ‘The Dry Salvages’ first appeared twelve days later. He was concerned about some final revisions to the poem: Helen Gardner has commented that ‘Presumably it was the word “undefeated” that Eliot feared might in 1941 give a “topical allusion”‘; yet, despite a number of recastings, he allowed ‘undefeated’ to remain in the final text. Eliot was not saying that the last lines must avoid a topical allusion. The possibility of finding one which will be taken for the fundamental intent
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Clark, E. Culpepper. "Class of‘65." In The Schoolhouse Door. Oxford University PressNew York, NY, 1993. http://dx.doi.org/10.1093/oso/9780195074178.003.0008.

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Abstract The class of ‘65 experienced campus life in a radically different way. Transforming events took place during their school days. There was still time to join fraternities, to “twist and shout,” to wear madras shirts, Villager dresses, and Bass Weejun shoes; still time to sweat through hot September football games and take your girl to the drive-in theater, where an unlucky fellow might see My Fair Lady in its entirety without distraction. But slow-dancing to “Moon River” or whiling away time at Pug ‘s were happy hours enacted against a backdrop of profound change; change with which eac
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Mielusel, Ramona. "‘L’oued revient toujours dans son lit’: Franco-Maghrebi identity in Hassan Legzouli’s film Ten’ja." In Reimagining North African immigration. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9780719099489.003.0012.

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The complex question of identity has always been the center of interest of Franco-Maghrebi literature and cinema. It is also the main subject in Ten’ja, a 2004 film by Franco-Moroccan director Hassan Legzouli. This article attempts to outline the key moments in Nordine, the central character ’s transformation and initiation from denial to acceptance of his double-sided identity to climax in an essential understanding of his Franco-Maghrebi status north and south of the Mediterranean. Nordine successfully reconciles his multiple identities by the end of his transformative journey. The article e
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Conference papers on the topic "S-twist"

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Li, Peng, Xiang-Wen Jiang, Qi-Jun Zhao, and Guo-Qing Zhao. "Integrated Optimization Analyses on Aerodynamic/Stealth Characteristics of Helicopter Rotor Based on Surrogate Model." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9463.

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Based on Computational Fluid Dynamics (CFD) method, electromagnetic high-frequency method and surrogate model optimization techniques, an integration design method about aerodynamic/stealth has been established for helicopter rotor. The developed integration design method is composed of three modules: 1) integrated grids generation: the moving-embedded grids for CFD solver and the blade grids for Radar Cross Section (RCS) solver are generated by solving Poisson equations and folding approach. 2) aerodynamic/stealth solver: the aerodynamic characteristics are simulated by CFD method based upon
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Yan, Qingling, Hongyuan Chen, Yiling Zhang, Jinyun Zhao, and Xigao Jian. "Novel Poly(Phthalazinone Ether Sulfone Ketone) Heat Resistant Coating1." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08048.

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Abstract Novel poly(phthalazinone ether sulfone ketone) (PPESK) synthesized in our laboratory, has shown good solubility and very high glass transition temperature (Tg), in the range of 263±305℃, by the virtue of the introduction of twist non-coplanar phthalazinone moieties into the polymer’s backbone. The resin was dissolved in organic solvent, and baked to form varnish. The effects of polymers’ sulfone/ketone molar ratios (S/K) and intrinsic viscosity on the coating’s properties were studied, either. The result showed that the varnish has excellent adhesion to metal, impact resistance and fl
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Qi, Wu, Zhao Qi-jun, Wang Bo, and Yin Zhi-zhao. "Highly-efficient Aerodynamic Design of Rotor with High Performance." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10116.

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To design helicopter rotor efficiently, an adjoint-based and RBF surrogate model coupled method is applied for aerodynamic design of hovering rotor with high aerodynamic performance in a non-inertial reference frame. The OC-O type body-fitted grids are generated around the rotor blade, and the DDM method and "Inverse map" method are utilized for the rapid identification of hole cells and hole boundary donor cells respectively. Based on the embedded grid system, the RANS equations coupled with S-A turbulence model in rotating frame are used as the governing equations, the upwind scheme of Roe w
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Phillips, Brandyn, Omri Rand, Vikram Hrishikeshavan, and Inderjit Chopra. "Design and Development of a Scaled Quadrotor Biplane with Variable Pitch Proprotors for Rapid Payload Delivery." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11363.

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With the introduction of multiple mission roles, air vehicles such as quadcopters are being put under increasing performance strain such as faster travel times, longer loiter endurance, and higher payload capacity. These aspects are driving experimentation with hybrid air vehicles. This paper discusses the design and development of one such hybrid vehicle, the quad rotor biplane, that is adapted for package delivery capability. This vehicle configuration has four proprotors and two wings situated in a biplane configuration. It takes of as a helicopter in tail-sitter configuration and uses diff
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Gardner, A., C. Merz, and C. Wolf. "Effect of Sweep on a Pitching Finite Wing." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0074-2018-12689.

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An investigation was performed into the effect of positive and negative sweep angle on the boundary layer transition and dynamic stall behaviour of a finite wing. The finite wing had a 6:1 aspect ratio, modern (SPP8) tip shape and positive twist, moving the maximum load on the wing away from the wind tunnel wall. Experiments were performed with sweep A=±30° and A=0° for static polars and sinusoidal pitching. The positively twisted wing shows a similar S-shaped boundary layer transition on the pressure side to that previously seen for helicopter rotor blades in hover. The transition positions o
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Mei, Bin, Fugui Xie, Xin-Jun Liu, and Xuan Luo. "Motion/Force Transmissibility Based Performance Evaluation of a 6-DOF Parallel Robot With 2-DOF Active Joints." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85666.

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3-PP(Pa)S robot is a six degrees of freedom (DOFs) parallel mechanism with 2-DOF active planar joint. For the design and application of the 3-PP(Pa)S robot, it is essential to investigate the motion/force transmissibility of the robot. But previous studies of the motion/force transmissibility have mainly focused on the parallel robots with 1-DOF active joints and thus cannot be directly applied to the 3-PP(Pa)S robot. In this paper, input twist subspace, transmission wrench subspace and output twist subspace are investigated to build mathematical models of the twists and wrenches corresponding
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Li, Juanni, Ayesha B. Alvero, Sudhakar Nuti, et al. "Abstract A02: CBX7 binds TWIST-1’s E-box to inhibit TWIST-1 function and curtail tumorigenecity and metastatic potential in ovarian cancer." In Abstracts: AACR Special Conference on Advances in Ovarian Cancer Research; September 13-16, 2019; Atlanta, GA. American Association for Cancer Research, 2020. http://dx.doi.org/10.1158/1557-3265.ovca19-a02.

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Albanese, Leonardo C., Farhan Gandhi, and Susan W. Stewart. "Adaptive Geometry Wind Turbine Blades for Increasing Performance." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90236.

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With wind turbines working to capture energy at different wind speeds rotor morphing could potentially increase energy capture over wind speeds up to the rated speed. This study examines what the optimal geometry might look like at different wind speeds, how it might differ from one speed to another, and how much increase in power and annual energy production could be realized with the optimal geometry at each wind speed. Using a blade-element theory based analysis and conducting simulations on the 1.5 MW WindPACT turbine and the 5MW NREL concept turbine, variations in blade twist and collecti
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Keshiyev, Sahet, Tarje Naterstad, and Ross Murray. "2nd Mode Shape Torsional Vibration - Observation, Identification, Mitigation." In SPE/IADC International Drilling Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/212473-ms.

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Abstract This paper investigates the drill pipe twist-offs that occurred while drilling an S-shaped well in the 12 ¼" section. The presence of the 2nd mode shape of torsional vibration was observed and linked to the failure. Conditions that lead to a 2nd mode shape being triggered and sustained are discussed in addition to recommendations to prevent fatigue failures. 2nd mode shape torsional vibration is a standing wave with two nodes created along the drill string, with the first one being the top drive and 2nd located along the drill string. The drill pipe experiences the highest torque fluc
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Tsao, Chungchen, and Keilin Kuo. "Theoretical Analysis of Thrust-Induced Delamination in Hemispherical Drilling Composite Materials." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20633.

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The theoretical analysis of thrust-induced delamination in hemispherical drilling composite materials was investigated in this study. The theoretical analysis indicated that the thrust force of hemispherical drill at drill and delamination ratio (s) about 0.8 has a significant effect on prevention of delamination damage in drilling composite materials. The maximum thrust force of hemispherical drill at α = 2, however, was about 36% of that of twist drill. In other words, hemispherical drill has a correspondence with lower bearing stresses on drilling-induced delamination, which is liable to ca
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Reports on the topic "S-twist"

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Murray, Chris, Keith Williams, Norrie Millar, Monty Nero, Amy O'Brien, and Damon Herd. A New Palingenesis. University of Dundee, 2022. http://dx.doi.org/10.20933/100001273.

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Robert Duncan Milne (1844-99), from Cupar, Fife, was a pioneering author of science fiction stories, most of which appeared in San Francisco’s Argonaut magazine in the 1880s and ’90s. SF historian Sam Moskowitz credits Milne with being the first full-time SF writer, and his contribution to the genre is arguably greater than anyone else including Stevenson and Conan Doyle, yet it has all but disappeared into oblivion. Milne was fascinated by science. He drew on the work of Scottish physicists and inventors such as James Clark Maxwell and Alexander Graham Bell into the possibilities of electroma
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