Relevant bibliographies by topics / Harmonine

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

Academic literature on the topic 'Harmonine'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Harmonine"

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Röhrich, Christian Rene, Che Julius Ngwa, Jochen Wiesner, Henrike Schmidtberg, Thomas Degenkolb, Christian Kollewe, Rainer Fischer, Gabriele Pradel, and Andreas Vilcinskas. "Harmonine, a defence compound from the harlequin ladybird, inhibits mycobacterial growth and demonstrates multi-stage antimalarial activity." Biology Letters 8, no. 2 (September 21, 2011): 308–11. http://dx.doi.org/10.1098/rsbl.2011.0760.

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The harlequin ladybird beetle Harmonia axyridis has been introduced in many countries as a biological control agent, but has become an invasive species threatening the biodiversity of native ladybirds. Its invasive success has been attributed to its vigorous resistance against diverse pathogens. This study demonstrates that harmonine ((17 R ,9 Z )-1,17-diaminooctadec-9-ene), which is present in H. axyridis haemolymph, displays broad-spectrum antimicrobial activity that includes human pathogens. Antibacterial activity is most pronounced against fast-growing mycobacteria and Mycobacterium tuberculosis , and the growth of both chloroquine-sensitive and -resistant Plasmodium falciparum strains is inhibited. Harmonine displays gametocytocidal activity, and inhibits the exflagellation of microgametocytes and zygote formation. In an Anopheles stephensi mosquito feeding model, harmonine displays transmission-blocking activity.
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Abel, Steven-Alan G., Wesley J. Olivier, Richard L. Pederson, Alex C. Bissember, and Jason A. Smith. "Complete Stereocontrol in the Synthesis of Harmonine and Novel Analogues Facilitated by a Grubbs Z-Selective Cross-Metathesis Catalyst." Australian Journal of Chemistry 68, no. 12 (2015): 1815. http://dx.doi.org/10.1071/ch15397.

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(R)-Harmonine was synthesised in 15 % overall yield via a six-step sequence exploiting a Z-selective cross-metathesis reaction as its centrepiece. By this strategy, the cis-olefin present in the target could be installed exclusively. The use of an alcohol and an ester as the amine precursors was crucial for isolating the cross-metathesis product from the self-metathesis products. This method was also used to prepare two novel analogues of harmonine.
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Chandra Philkhana, Satish, Prabhu Dhasaiyan, B. L. V. Prasad, and D. Srinivasa Reddy. "Access to harmonine, a chemical weapon of ladybird beetles." RSC Adv. 4, no. 58 (2014): 30923–26. http://dx.doi.org/10.1039/c4ra05859c.

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Nagel, Nadja C., Anita Masic, Uta Schurigt, and Wilhelm Boland. "Efficient synthesis of (R)-harmonine – the toxic principle of the multicolored Asian lady beetle (Harmonia axyridis)." Organic & Biomolecular Chemistry 13, no. 18 (2015): 5139–46. http://dx.doi.org/10.1039/c5ob00461f.

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Grillet, Nicolas. "Harmonine est un composant de la machinerie de mécanotransduction auditive." médecine/sciences 25, no. 11 (November 2009): 903–6. http://dx.doi.org/10.1051/medsci/20092511903.

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Schmidtberg, Henrike, Christian Röhrich, Heiko Vogel, and Andreas Vilcinskas. "A switch from constitutive chemical defence to inducible innate immune responses in the invasive ladybird Harmonia axyridis." Biology Letters 9, no. 3 (June 23, 2013): 20130006. http://dx.doi.org/10.1098/rsbl.2013.0006.

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The harlequin ladybird, Harmonia axyridis , has emerged as a model species for invasion biology, reflecting its remarkable capacity to outcompete native ladybird species when introduced into new habitats. This ability may be associated with its prominent resistance to pathogens and intraguild predation. We recently showed that the constitutive antibacterial activity present in the haemolymph of H. axyridis beetles can be attributed to the chemical defence compound harmonine. Here, we demonstrate that H. axyridis differs from other insects, including the native ladybird Coccinella septempunctata, by reducing rather than increasing the antimicrobial activity of its haemolymph following the injection of bacteria. However, both species produce new or more abundant proteins in the haemolymph, indicating that bacterial challenge induces innate immune responses associated with the synthesis of immunity-related proteins. Our results suggest that H. axyridis beetles can switch from constitutive chemical defence to inducible innate immune responses, supporting hypothesis that inducible antimicrobial peptides protect host beetles against pathogens that survive constitutive defences. These alternative antimicrobial defence mechanisms may reflect a trade-off resulting from fitness-related costs associated with the simultaneous synthesis of harmonine and antimicrobial peptides/proteins.
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Chandra Philkhana, Satish, Prabhu Dhasaiyan, B. L. V. Prasad, and D. Srinivasa Reddy. "ChemInform Abstract: Access to Harmonine, a Chemical Weapon of Ladybird Beetles." ChemInform 46, no. 8 (February 2015): no. http://dx.doi.org/10.1002/chin.201508282.

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Enders, Dieter, and Dominika Bartzen. "Enantioselective total synthesis of harmonine, a defence alkaloid of ladybugs (Coleoptera: Coccinellidae)." Liebigs Annalen der Chemie 1991, no. 6 (June 13, 1991): 569–74. http://dx.doi.org/10.1002/jlac.1991199101103.

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Gilgenkrantz, S. "Harmonine, un joli nom pour une protéine impliquée dans un des syndromes de Usher." médecine/sciences 17, no. 3 (2001): 379. http://dx.doi.org/10.4267/10608/1932.

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Haulotte, Eveline, Pascal Laurent, and Jean-Claude Braekman. "Biosynthesis of Defensive Coccinellidae Alkaloids: Incorporation of Fatty Acids in Adaline, Coccinelline, and Harmonine." European Journal of Organic Chemistry 2012, no. 10 (January 4, 2012): 1907–12. http://dx.doi.org/10.1002/ejoc.201101563.

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Dissertations / Theses on the topic "Harmonine"

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Nagel, Nadja [Verfasser], Wilhelm [Gutachter] Boland, and Rainer [Gutachter] Beckert. "Synthesis and bioactivity studies of harmonine : the defense alkaloid of the asian lady beetle Harmonia axyridis / Nadja Nagel ; Gutachter: Wilhelm Boland, Rainer Beckert." Jena : Friedrich-Schiller-Universität Jena, 2016. http://d-nb.info/1177611686/34.

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Michalski, Nicolas. "Transduction mécano-électrique auditive : identification et caractérisation fonctionnelle de ses composants." Paris 6, 2008. http://www.theses.fr/2008PA066632.

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Je me suis intéressé au cours de ma thèse au complexe moléculaire de la transduction mécano-électrique des cellules sensorielles de la cochlée. Ce complexe, qui se situe dans la région apicale des stéréocils de la touffe ciliaire, permet la dépolarisation des cellules sensorielles suite à une stimulation sonore. Il est notamment constitué d’un canal mécanosensible qui serait connecté au lien apical qui unit chaque stéréocil au stéréocil le plus proche de la rangée voisine. Lorsque la touffe ciliaire est défléchie dans la direction excitatrice, les canaux de transduction s’ouvrent et l’entrée de cations donne naissance à un courant de récepteur. Ce courant subit une adaptation. La nature moléculaire du canal de transduction et des composants responsables de l’adaptation, n’est pas connue. Dans le but d’étudier les mécanismes de la transduction mécano-électrique auditive, j’ai développé durant ma thèse une technique d’enregistrement des courants de transduction. Je me suis ensuite intéressé au rôle dans la transduction mécano-électrique de deux protéines de la touffe ciliaire, dont le déficit est à l’origine d’un syndrome d’Usher : Vlgr1 et harmonine.
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Eder, Petrus. "Die modernen Tonarten und die phrygische Kadenz." Tutzing : H. Schneider, 2004. http://catalogue.bnf.fr/ark:/12148/cb391687346.

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Thunberg, Erik. "On the Benefit of Harmonic Measurements in Power Systems." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3219.

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Wright, P. S. "The accurate analysis of smoothly fluctuating harmonics applied to the calibration of harmonic analysers." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/843265/.

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The aim of this research is to develop an accurate method for the analysis of signals composed of fluctuating harmonics. The results obtained of analysis are applied to the calibration of harmonic analysis instruments. A new method is presented suitable for the accurate analysis of smoothly fluctuating harmonic signals. The method is based on a model of signals with a known period, in which the harmonics are individually modulated by polynomial functions normalised over a sampled signal sequence time. Using this model, a decomposition method is developed such that the modulating polynomials can be recovered from a signal. The polynomial decomposition method leads to a piece-wise analysis of the waveform. Two methods based on least squares and splines respectively, are developed with the aim of giving continuity to the piece-wise analysis. Comparisons of the new method with the short time Fourier transform are given. Having defined a test signal and obtained and accurate analysis of it properties, it can be used to calibrate harmonic analysers. For a given applied signal, analysis with these devices can give rise to variation in results as a function of the phase between the signal and the STFT windows. This result distribution due to variable phase (RDVP) is discussed and examples are given for various signals. The RDVP complicates the calibration process due to the spread of results that occur when testing the device. A method is developed to find the RDVP for an applied signal that uses the polynomial decomposition method to find the modulation functions of each harmonic in the applied calibration signal. Having found the RDVP for an applied signal, it is necessary to fit the results of the analyser under test, to the distribution. The random nature of the phase makes the systematic comparison of the theoretical and measured distributions difficult to achieve. A novel method that uses multiple phase shifted modulated harmonics is presented. By comparing the results of the analyser under test to the distributions of each of the phase-shifted harmonics, a best-fit phase shift can be determined and the required calibration comparison made. Key words: time-frequency analysis, demodulation, harmonic analysis, fluctuating harmonics, waveform metrology, calibration of harmonic analysers.
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Zeng, Yijia. "Circuits photoniques III-nitrure avec des cristaux photoniques et des microdisques." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS070.

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Les semi-conducteurs nitrures d'éléments III type GaN, AlN sont des matériaux extrêmement intéressants pour la photonique intégrée sur silicium. Ils sont transparents sur une gamme très étendue et possèdent des susceptibilités non linéaires non nulles, ce qui rend possible les expériences non linéaires d'ordre deux et d'ordre trois. Dans ce contexte, cette thèse a été consacrée à l'étude de circuits photoniques avec des micro-résonateurs tels que les cristaux photoniques et les microdisques en matériau GaN/AlN épitaxiés sur Si. Le dessin des microcavités et des procédés de fabrication ont été optimisés afin d’obtenir un mode résonant dans le proche infrarouge avec un facteur de qualité jusqu'à 34000 pour les cristaux photoniques et 80000 pour les microdisques. J’ai étudié sur ces circuits photoniques les propriétés de conversion harmonique telles que la génération de seconde harmonique (SHG) et la génération de troisième harmonique (THG). En utilisant les propriétés de la THG, en combinant simplement un objectif optique et une caméra CCD, j'ai effectué l'imagerie des modes de cristaux photoniques du proche infrarouge avec une résolution spatiale sub-longueur d'onde (300 nm). J'ai également effectué l'imagerie de SHG sur des microdisques avec une excitation optique en résonance avec un mode de galerie pour le laser pompe. La dernière partie porte sur l'étude de la SHG en accord de phase entre les modes TM-0-0-X et TM-0-2-2X en variant le diamètre du disque avec un pas extrêmement faible (8 nm). Cela a été effectué pour des modes résonants de facteurs de qualité autour de 10000. Ces résultats montrent le potentiel des semi-conducteurs de III-nitrures pour la réalisation de circuits optiques sur silicium à deux dimensions
Nitride semiconductors are extremely interesting for integrated photonics on silicon. They have a large transparent window and dispose of non zero nonlinear susceptibilities which enable second and third order nonlinear experiments. In this context, this thesis has been devoted to integrated photonic circuits with microresonators such as photonic crystals and microdisks. The microcavity design and the fabrication process have been optimized in order to obtain a near infrared resonant mode with a quality factor up to 34000 for photonic crystals and 80000 for microdisks. I carried out harmonic conversion experiments such as second harmonic generation (SHG) and third harmonic generation (THG). With THG, by combining simply an optical objective and a CCD camera, I carried out near infrared photonic crystal modes imaging with a subwavelength spatial resolution (300 nm). I also did SHG imaging on microdisks with an optical excitation in resonance with the gallery mode for the pump laser. The last part of the work is dedicated to the demonstration of phase-matched SHG in microdisk photonic circuits between the TM-0-0-X and TM-0-2-2X modes by varying the microdisk diameter with a very small step (8 nm). These experiments have been done for resonant modes with quality factors around 10000.These demonstrations show the potential of III-nitride semiconductors for the realization of two dimensional optical circuits on silicon
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Orillaza, Jordan Rel Cajudo. "Harmonic State Space Model of Three Phase Thyristor Controlled Reactor." Thesis, University of Canterbury. Electrical and Computer Engineering, 2012. http://hdl.handle.net/10092/6634.

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Harmonic domain models have been developed for Thyristor Controller Reactors (TCR) and other power electronic devices. Recently, these models have been extended to describe not just the steady-state harmonic interactions but harmonic transients as well. However, these dynamic models consistently do not incorporate models for controls. On the other hand, for the TCR as a FACTS Controller, dynamic models are available in which only the fundamental frequency component of the Controller is included; excluding harmonic interactions presumes that these do not affect the dynamics of the Controller. This thesis describes the development of a Harmonic State Space (HSS) model of a three phase TCR. As an extended state space description, this model describes the dynamics of the Controller while capturing harmonic interactions. It also includes the effect of switching instant variation which significantly improves the effectiveness of the model and allows the controller feedback characteristics to be included. The result of this model was validated with a purely time-domain simulation in PSCAD/EMTDC. Using the HSS to model a power system with TCR, it is illustrated that harmonic interactions play a significant role in the dynamics of the system. It is observed that for the specific system analysed, the least-damped pole-pair which dominates the dynamics of the system is associated with the 5th harmonic. Failure to include interactions with this specific harmonic produces an inaccurate dynamic description. Preliminary to the development of HSS model, a linearised harmonic domain model of a TCR which establishes the harmonic interactions across the device is also developed. Results of this model are validated with a time-domain simulation. This characterisation paves the way for a reduced harmonic state space model that is used in the HSS model. The principles and procedures established in this thesis can be applied to the development of models for other FACTS Controllers or HVDC links.
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Alvarez, Christophe. "Masques Op. 34, Karol Szymanowski : étude de l’implication structurelle des différents niveaux du parcours harmonique : Analyse du discours et problématiques interprétatives." Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR2018/document.

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L’objectif de cette étude est de montrer – par une analyse rigoureuse des principes harmoniques qui gouvernent les multiples sections du tryptique pour piano Masques Op. 34 de Karol Szymanowski – qu’au-delà d’une apparente hétérogénéité de surface, le discours musical est organisé de façon cohérente et subtile par l’interpénétration du niveau de perception immédiate du corps sonore et du niveau infra-sensible qui procède de l’ordre des fondamentales harmoniques. Cette thèse propose également des conseils d’interprétation, déterminés par l’expérience analytique
The purpose of this study is to show—by means of a rigorous analysis of the harmonic principles which govern the multiple sections of the piano triptych Masques Op. 34 of Karol Szymanowski — that beyond the apparently heterogeneous surface the musical discourse is subtly and coherently organised by the interpenetration of two layers: the immediate perception of sound structure and the underlayer which proceeds from the order of the harmonic fundamentals. This thesis also proposes suggestions for interpretation, determined by the analytical experience
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PARMAN, JOSHUA BRYAN. "HARMONICE MUNDI." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1178140756.

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Moomaw, Charles Jay. "Augmented mediant chords in French Baroque music /." Ann Arbor : UMI, 2000. http://catalogue.bnf.fr/ark:/12148/cb37059818t.

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Books on the topic "Harmonine"

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Harmonie, harmonie: Roman. Paris, France: Éditions de La Martinière, 2014.

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Hildegard. Symphonie des harmonies célestes =: Symphonia harmoniae caelestum revelationum : suivi de l'Ordre des vertus = Ordo virtutum. Grenoble: J. Millon, 2003.

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Walther, Christian. In Harmonie. Bern: Benteli, 1990.

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Harmonie: Roman. Paris: Plon, 2011.

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Harmonics. Calgary: Freehand Books, 2009.

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Collet, Jean-Pierre. Harmonies. Paris: Jean-Pierre Collet, 1992.

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Ferguson, Jesse Patrick. Harmonics. Calgary: Freehand Books, 2009.

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Ptolemy. Harmonics. Leiden: Brill, 2000.

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Kirby, Rowan. Harmonies. London: Mills & Boon, 1987.

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Karas, Simōn I. Harmonika. Athēnai: Syll. pros Diadosin tēs Ethnikēs Mousikēs, 1989.

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Book chapters on the topic "Harmonine"

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Avery, John. "Harmonic Polynomials, Hyperspherical Harmonics, and Sturmians." In Fundamental World of Quantum Chemistry, 261–96. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0113-7_11.

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Theobald, Theo, and Cary Cooper. "Harmonise." In Doing the Right Thing, 125–32. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9780230359017_16.

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Grütter, Jörg Kurt. "Harmonie." In Grundlagen der Architektur-Wahrnehmung, 223–49. Wiesbaden: Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-05110-5_7.

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Grütter, Jörg Kurt. "Harmonie." In Grundlagen der Architektur-Wahrnehmung, 221–45. Wiesbaden: Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-26785-8_7.

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Stoesz, David. "Harmonize applications." In Welfare State 3.0, 144–63. Abingdon, Oxon; New York, NY: Routledge, 2021.: Routledge, 2021. http://dx.doi.org/10.4324/9781003144342-10.

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Mühlenhof, Mira Christine. "Harmonie – Handeln." In Chefsache Intrinsische Motivation, 189–202. Wiesbaden: Springer Fachmedien Wiesbaden, 2017. http://dx.doi.org/10.1007/978-3-658-18307-3_17.

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Albert, Claudia. "Harmonie/harmonisch." In Ästhetische Grundbegriffe, 1–25. Stuttgart: J.B. Metzler, 2010. http://dx.doi.org/10.1007/978-3-476-00522-9_1.

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Blasco, Andreu López. "Erzwungene Harmonie." In Junge Erwachsene in Europa, 187–200. Wiesbaden: VS Verlag für Sozialwissenschaften, 1996. http://dx.doi.org/10.1007/978-3-663-10455-1_10.

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Noesselt, Nele. "Ordnungsprinzip: Harmonie." In Alternative Weltordnungsmodelle?, 183–210. Wiesbaden: VS Verlag für Sozialwissenschaften, 2010. http://dx.doi.org/10.1007/978-3-531-92329-1_5.

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Chattopadhyay, Surajit, Madhuchhanda Mitra, and Samarjit Sengupta. "Harmonics." In Power Systems, 17–34. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0635-4_4.

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Conference papers on the topic "Harmonine"

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Arghandeh, Reza, Ahmet Onen, Jaesung Jung, Danling Cheng, Robert Broadwater, and Virgilio Centeno. "Harmonic Impact Study for Distributed Energy Resources Integrated Into Power Distribution Networks." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98150.

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Smart realization involves a steady increase in inverter-based components like Distributed Energy Resources (DER), energy storage systems, and plug-in electric vehicles. The harmonics related to DER inverters and the spread of power electronic devices raises concerns for utilities and customers. Harmonics can create component failures, thermal losses and control system malfunctions. In this paper the authors analyze the impact of multi-source harmonics from DERs inside distribution networks. The harmonics impacts are evaluated by harmonic measurement indices. Harmonic emission in a real distribution circuit is simulated with the help of power flow analysis. The results are presented with visualization techniques to give a better picture of harmonic propagation vs. different levels of harmonic source magnitude and angle. Due to effect of harmonic on network efficiency, a sensitivity analysis considering power factors is conducted.
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Kuznetsov, Sergey, Sergey Kuznetsov, Yana Saprykina, Yana Saprykina, Boris Divinskiy, and Boris Divinskiy. "PHYSICAL INTERPRETATION OF WAVE BREAKING CRITERIA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315241f49.

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On the base of experimental data it was revealed that type of wave breaking depends on wave asymmetry against the vertical axis at wave breaking point. The asymmetry of waves is defined by spectral structure of waves: by the ratio between amplitudes of first and second nonlinear harmonics and by phase shift between them. The relative position of nonlinear harmonics is defined by a stage of nonlinear wave transformation and the direction of energy transfer between the first and second harmonics. The value of amplitude of the second nonlinear harmonic in comparing with first harmonic is significantly more in waves, breaking by spilling type, than in waves breaking by plunging type. The waves, breaking by plunging type, have the crest of second harmonic shifted forward to one of the first harmonic, so the waves have "saw-tooth" shape asymmetrical to vertical axis. In the waves, breaking by spilling type, the crests of harmonic coincides and these waves are symmetric against the vertical axis. It was found that limit height of breaking waves in empirical criteria depends on type of wave breaking, spectral peak period and a relation between wave energy of main and second nonlinear wave harmonics. It also depends on surf similarity parameter defining conditions of nonlinear wave transformations above inclined bottom.
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Kuznetsov, Sergey, Sergey Kuznetsov, Yana Saprykina, Yana Saprykina, Boris Divinskiy, and Boris Divinskiy. "PHYSICAL INTERPRETATION OF WAVE BREAKING CRITERIA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b94019210f7.30842240.

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On the base of experimental data it was revealed that type of wave breaking depends on wave asymmetry against the vertical axis at wave breaking point. The asymmetry of waves is defined by spectral structure of waves: by the ratio between amplitudes of first and second nonlinear harmonics and by phase shift between them. The relative position of nonlinear harmonics is defined by a stage of nonlinear wave transformation and the direction of energy transfer between the first and second harmonics. The value of amplitude of the second nonlinear harmonic in comparing with first harmonic is significantly more in waves, breaking by spilling type, than in waves breaking by plunging type. The waves, breaking by plunging type, have the crest of second harmonic shifted forward to one of the first harmonic, so the waves have "saw-tooth" shape asymmetrical to vertical axis. In the waves, breaking by spilling type, the crests of harmonic coincides and these waves are symmetric against the vertical axis. It was found that limit height of breaking waves in empirical criteria depends on type of wave breaking, spectral peak period and a relation between wave energy of main and second nonlinear wave harmonics. It also depends on surf similarity parameter defining conditions of nonlinear wave transformations above inclined bottom.
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Feng, Xingya, Richard H. J. Willden, Binzhen Zhou, and Thomas A. A. Adcock. "Numerical Analysis of Nonlinear Wave Loads on an Offshore Wind Turbine Monopile." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95161.

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Abstract Highly nonlinear extreme waves are the major, often the dominant, environmental load on offshore wind turbines. The higher-order ‘ringing’ loads associated with the nonlinear waves can cause unexpected resonance of the monopile. Hydrodynamic analysis of these harmonic loads remains a challenge due to the difficulty in extracting the bound harmonics from the force spectrum in an extreme wave event. A phase manipulation approach (four-phase combination) has been recently demonstrated to be able to separate the higher harmonic components of the wave loads in tank tests. In this work, we employ a fully nonlinear potential flow based Numerical Wave Tank (NWT) to simulate the wave diffraction by a fixed vertical column. We present a detailed study of our checks on the numerical accuracy of our model. Phase control is implemented for the wavemaker to manipulate the phase of each wave component. Focused wave groups are generated to represent the incoming extreme waves. With the four-phase decomposition, the higher harmonics of the wave loads are shown to be clearly separated. Comparisons with the existing test results show fairly good agreement at higher harmonics. The structure of the harmonic forces and moments are analysed and we reconstruct the higher harmonics based on the Stokes expansion assumption using the linear force. In addition, the effects of wave steepness on the harmonic components are discussed.
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Kim, HyungTae, KyungChan Jin, and SeungTaek Kim. "Frequency Analysis and Interpolated Spectra of Time-Limited Samples in 3D RF Imaging." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36576.

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Fast Fourier Transform (FFT) calculates integer harmonic components, but ignores other frequency components such as non-integer harmonics and non-harmonics. In a practical sampling problem, the length of a sampled signal is finite and the sampling time is minimized. Therefore, it is necessary for interpolation to improve the accuracy of frequency analysis considering 1/m harmonic components and zero-padding (ZP) technique. The proposed method was applied to a 3D RF profile measurement system and the resolution was improved to 1/m.
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Rastegar, Jahangir, Dake Feng, and Lin Hua. "On the Relationship Between the Harmonic Amplitudes of the Output Motion of Closed-Loop Linkage Mechanisms." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49537.

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It is well known that due to the nonlinearity of the kinematics of linkage mechanisms, their output motion contains harmonics of the input motion. In most mechanisms, the generated high harmonic components in the output motion are the main source of vibration excitation that the mechanism imparts on the overall system, including its own structure. For simple linkage mechanisms such as slider-cranks and four-bar linkage mechanisms, the amplitudes of the harmonics of the output motion for constant input rotation have been derived. In the present study, it is shown that certain relationships exist between the amplitudes of the harmonic of the output motions. In particular, odd and even harmonic amplitudes are shown to be related through an inequality relationship. These relationships are due to the basic characteristics of the linkage mechanisms motions, which are significantly simplified for certain linkage geometries. The relationships between the amplitudes of the output velocity harmonics are derived for slider-crank and four-bar linkage mechanisms.
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N. S. da Silva, Maise, Rafael S. Salles, Alexandre Degan, Carlos A. Duque, and Paulo F. Ribeiro. "Investigation of Harmonic Current Aggregation in the TBE/Eletronorte Transmission System." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1725.

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Harmonic distortions are not new problems in electrical power systems. However, electrical networks have undergone several changes in recent decades, such as the wide range of electronic devices (converters, control devices, etc.), and those equipment produce emission of harmonic currents. The investigation of the contribution of several sources of harmonics in power systems is essential, considering that it is a problem of power quality that cannot be neglected. Thispaper aims to investigate the aggregation of harmonic currents in a 230kV TBE/Eletronorte system. For this, the transmission system was modeled using MATLAB/Simulink software with the typical values provided by TBE. A vectorial analysis was performed for the three-phase system and a sum analyzes of harmonics from different sources on Phase A, to estimate the influence of those current sources on Castanhal and Guama buses, when a harmonic spectrumis present on Vila do Conde and Utinga buses. In both analyzes, a phase angle spectrum of 10 and 20 degrees was applied in the harmonic source of Utinga. The summation analyzes proved to be useful because it can estimate values that harmonic currents can assume, for different conditions, and can be very useful in the planning stage to avoid estimation errors.
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Wang, Dingxi, Sen Zhang, Xiuquan Huang, and Huang Huang. "Coupled Time and Passage Spectral Method for an Efficient Resolution of Turbomachinery Far Upstream Wakes." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59563.

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Abstract The paper proposes a novel numerical method called coupled time and passage spectral method for an efficient resolution of far upstream wakes in an unsteady analysis of flow field within generic multiple blade rows. The proposed method is a very simple and natural extension of the time spectral form harmonic balance method. By including inter blade phase angle and passage index in a truncated Fourier series, the proposed method is capable of circumventing the limitations of the harmonic balance method in dealing with zero frequency harmonics and time harmonics with same frequency but different inter blade phase angles. Different from the harmonic balance method, which seeks solution at different time instants of the same passage, the coupled spectral method seeks solutions at different passages and time instants. Same as the harmonic balance method, all these solutions are connected via a spectral operator. Coupled time and passage sampling is performed using the modified Gram Schmidt process to choose the time and passage pairs which give the most orthogonal rows of an inverse Fourier transform matrix. The coupled time and passage spectral method requires minimum change to an existing harmonic balance solver. A numerical case study has been provided in the paper to demonstrate the expected capability against the harmonic balance method.
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Afzali, Fatemeh, Gizem D. Acar, and Brian F. Feeny. "Response Characteristics of Systems With Two-Harmonic Parametric Excitation." 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/detc2018-86140.

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Floquet theory is combined with harmonic balance to study parametrically excited systems with two harmonics of excitation, where the second harmonic has twice the frequency of the first one. An approximated solution composed of an exponential part with unknown exponents and a periodic term consisting of a truncated Fourier series is considered. When applied to a two-harmonic Mathieu equation the analysis shows that the second harmonic alters stability characteristics, particularly in the primary and superharmonic instabilities. We also look at the initial conditions response and its frequency content. The second excitation harmonic in the system with parametric damping is seen to disrupt the coexistence phenomenon which is observed in the single-harmonic case.
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Ge, Q. J., and J. Rastegar. "Trajectory Generation for High-Speed Machinery With Minimal Residual Vibration Using Low-Harmonic Rational Curves." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0093.

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Abstract For a given high-speed machinery, a significant source of the internally induced vibrational excitation is the presence of high frequency harmonics in the trajectories that the system is forced to follow. We develop a method for synthesizing a low-harmonic joint trajectory to reduce the potential vibration and related control problems using low-harmonic rational curves. Continuity conditions for these curves are studied and are used to develop a geometric algorithm for designing low-harmonic rational spline curves. Finally, we discuss how these low-harmonic curves may be used for trajectory generation of high-speed machinery with minimal residual vibration.
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Reports on the topic "Harmonine"

1

Freeden, W. Computation of Spherical Harmonics and Approximation by Spherical Harmonic Expansions,. Fort Belvoir, VA: Defense Technical Information Center, February 1985. http://dx.doi.org/10.21236/ada160445.

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Jain, A. Harmonic Coils. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/1661616.

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Barnes, P. D. B1 magnet harmonics. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/15005727.

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Caspi, S., M. Helm, and L. J. Laslett. 3D field harmonics. Office of Scientific and Technical Information (OSTI), March 1991. http://dx.doi.org/10.2172/5232433.

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Leavy, Michelle B., Danielle Cooke, Sarah Hajjar, Erik Bikelman, Bailey Egan, Diana Clarke, Debbie Gibson, Barbara Casanova, and Richard Gliklich. Outcome Measure Harmonization and Data Infrastructure for Patient-Centered Outcomes Research in Depression: Report on Registry Configuration. Agency for Healthcare Research and Quality (AHRQ), November 2020. http://dx.doi.org/10.23970/ahrqepcregistryoutcome.

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Background: Major depressive disorder is a common mental disorder. Many pressing questions regarding depression treatment and outcomes exist, and new, efficient research approaches are necessary to address them. The primary objective of this project is to demonstrate the feasibility and value of capturing the harmonized depression outcome measures in the clinical workflow and submitting these data to different registries. Secondary objectives include demonstrating the feasibility of using these data for patient-centered outcomes research and developing a toolkit to support registries interested in sharing data with external researchers. Methods: The harmonized outcome measures for depression were developed through a multi-stakeholder, consensus-based process supported by AHRQ. For this implementation effort, the PRIME Registry, sponsored by the American Board of Family Medicine, and PsychPRO, sponsored by the American Psychiatric Association, each recruited 10 pilot sites from existing registry sites, added the harmonized measures to the registry platform, and submitted the project for institutional review board review Results: The process of preparing each registry to calculate the harmonized measures produced three major findings. First, some clarifications were necessary to make the harmonized definitions operational. Second, some data necessary for the measures are not routinely captured in structured form (e.g., PHQ-9 item 9, adverse events, suicide ideation and behavior, and mortality data). Finally, capture of the PHQ-9 requires operational and technical modifications. The next phase of this project will focus collection of the baseline and follow-up PHQ-9s, as well as other supporting clinical documentation. In parallel to the data collection process, the project team will examine the feasibility of using natural language processing to extract information on PHQ-9 scores, adverse events, and suicidal behaviors from unstructured data. Conclusion: This pilot project represents the first practical implementation of the harmonized outcome measures for depression. Initial results indicate that it is feasible to calculate the measures within the two patient registries, although some challenges were encountered related to the harmonized definition specifications, the availability of the necessary data, and the clinical workflow for collecting the PHQ-9. The ongoing data collection period, combined with an evaluation of the utility of natural language processing for these measures, will produce more information about the practical challenges, value, and burden of using the harmonized measures in the primary care and mental health setting. These findings will be useful to inform future implementations of the harmonized depression outcome measures.
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Torroba, Gonzalo. A Simple Harmonic Universe. Office of Scientific and Technical Information (OSTI), December 2011. http://dx.doi.org/10.2172/1032771.

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Yang, M. J. MR harmonic quad study. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/15017144.

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Gardner, C. J. Booster Double Harmonic Setup Notes. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1172091.

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Niederer, J. BNL MAD: Harmonic Analysis Commands. Office of Scientific and Technical Information (OSTI), November 1996. http://dx.doi.org/10.2172/1151361.

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Michelotti, Leo. Making space for harmonic oscillators. Office of Scientific and Technical Information (OSTI), November 2004. http://dx.doi.org/10.2172/15017029.

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