Relevant bibliographies by topics / Spectre RMN

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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 'Spectre RMN'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Spectre RMN"

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Sergent, L., and J. P. Beaucourt. "Interpretation dü spectre RMN-3H du PK-11195 (3H)." Tetrahedron Letters 26, no. 43 (January 1985): 5291–92. http://dx.doi.org/10.1016/s0040-4039(00)95018-4.

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Guiñon, J. L., and M. Belanche. "Application de la résonance magnétique nucléaire du proton au dosage de l'éthanol dans les boissons alcoolisées." OENO One 23, no. 4 (December 31, 1989): 215. http://dx.doi.org/10.20870/oeno-one.1989.23.4.1245.

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<p style="text-align: justify;">Une équation pour le calcul de la teneur en éthanol basée sur les surfaces d'un spectre (H1-RMN) (Résonance magnétique du proton) est décrite. Les résultats obtenus par application de cette équation dans le vin et dans les boissons alcoolisées sont discutés. La méthode peut être retenue comme un dosage rapide de l'éthanol avec une précision de ± 6 p. 100 dans la gamme de 0 - 50 p. 100 vol. d'éthanol.</p>
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Gelboke, M., T. Blondiau, B. Kone, G. Lagrange, and R. Grimé. "Spectres RMN-1H Et -13C De Morpholines Et Thiomorpholines." Bulletin des Sociétés Chimiques Belges 93, no. 5 (September 1, 2010): 369–78. http://dx.doi.org/10.1002/bscb.19840930504.

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Gelbcke, M., C. Masiala-Tsobo, L. Dumont, F. Parmentier, and R. Grimée. "Spectres RMN -1H et -13C de Quelques Quinoléines et Quinaldines Mono et Disulfonees." Bulletin des Sociétés Chimiques Belges 91, no. 7 (September 1, 2010): 653–60. http://dx.doi.org/10.1002/bscb.19820910709.

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Kone, B., and M. Gelbcke. "Spectres RMN-1H de β-Aminothiols, Disulfures et Thiazolidines Derivés de la Thioephedrine." Bulletin des Sociétés Chimiques Belges 92, no. 2 (September 1, 2010): 139–49. http://dx.doi.org/10.1002/bscb.19830920208.

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Kone, B., and M. Gelbcke. "Spectres RMN-13C de β-Aminothiols Disulfures et Thiazolidines Derivés de la Thioephedrine." Bulletin des Sociétés Chimiques Belges 92, no. 3 (September 1, 2010): 203–13. http://dx.doi.org/10.1002/bscb.19830920302.

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Grignon-Dubois, Micheline, and Michel Laguerre. "Programme de simulation de spectres RMN 29Si Obtenus par inversion selective de population." Computers & Chemistry 9, no. 4 (January 1985): 279–84. http://dx.doi.org/10.1016/0097-8485(85)85004-x.

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Cantero Morán, Federico, and Marithania Silvero. "Extreme Khovanov spectra." Revista Matemática Iberoamericana 36, no. 3 (September 27, 2019): 661–70. http://dx.doi.org/10.4171/rmi/1142.

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Zamfir-Chiru-Anton, A., A. E. Stanciu, and D. C. Gheorghe. "Implications of melatonin in etiopathogenesis and treatment of autistic spectrum disorders." Romanian Medical Journal 63, no. 2 (June 30, 2016): 111–14. http://dx.doi.org/10.37897/rmj.2016.2.3.

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Melatonin is a hormone produced by the epiphyseal gland. Its physiologic functions have been extensively studied during the last years, its cyclic secretion seeming associated with multiple normal biological processes. Its correlation with autism has long been researched by some authors with the purpose to find a better therapeutically approach for a relative common disease of childhood. This paper reviews the accumulated scientific data in order to better understand the possible melatonin use in autistic symptoms treatment.
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Diaconu, Camelia C., Giorgiana Dediu, and Bianca Paraschiv. "The spectrum of clinical manifestations of antiphospholipid syndrome." Romanian Medical Journal 62, no. 1 (March 31, 2015): 59–63. http://dx.doi.org/10.37897/rmj.2015.1.11.

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Antiphospholipid syndrome is an acquired autoimmune disease characterized by the appearance of thrombosis (venous, arterial and microvascular) and/or complications during pregnancy, in the presence of antiphospholipid antibodies. The clinical spectrum of the disease is now more complex and include organ-specific and systemic symptoms induced not only by thrombotic mechanisms, but also immune-mediated. Patients diagnosed with antiphospholipid syndrome should be evaluated clinically and laboratory periodically to detect lung damage, cardiac, neurological, skin, eye, hematological, gastrointestinal complications.
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Dissertations / Theses on the topic "Spectre RMN"

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Kienlin, Markus von. "Instrumentation et méthodologie en spectroscopie RMN in vivo suppression de l'eau, édition de spectre et localisation spatiale /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37619193v.

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Maurice, Frédérique. "Plasticité structurale et émergence d'antibiorésistance à large spectre : étude d'une aminoglycoside acétyltransférase et recherche d'inhibiteurs." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2007. http://tel.archives-ouvertes.fr/tel-00336237.

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La résistance aux antibiotiques apparaît aujourd'hui comme un problème majeur de santé publique, en particulier à cause de l'apparition de souches de bactéries multirésistantes par production d'enzymes de modification de ces antibiotiques. Nous avons étudié une de ces enzymes de résistance, l'AAC(6')-Ib conférant la résistance aux aminoglycosides, antibiotiques à large spectre utilisés principalement en milieu hospitalier pour lutter contre des infections sévères. Deux variants de cette enzyme se sont répandus dans les souches cliniques résistantes : le premier confère une résistance élargie à tous les aminoglycosides, le second confère une résistance élargie à une autre classe d'antibiotiques, les fluoroquinolones. Nous avons résolu la structure de l'enzyme sauvage et du premier variant par cristallographie aux rayons X. Nous avons également modélisé la structure du deuxième variant. Ces structures nous ont permis d'apporter une explication possible sur l'adaptation de cette enzyme aux différents antibiotiques. En parallèle, nous avons réalisé un criblage de ligands de cette enzyme par RMN à flux continu robotisé. Nous avons pu isoler plusieurs motifs se fixant dans le site actif de l'enzyme constituant des pistes intéressantes dans la conception d'inhibiteurs de l'activité enzymatique.
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Kienlin, Markus von. "Instrumentation et méthodologie en spectroscopie RMN du proton in vivo : suppression de l'eau, édition de spectre, localisation spatiale." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0071.

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BOURG, STEPHANE. "Spectroscopie de rmn en solution : aspects quantitatifs et outils d'aide a l'analyse des spectres (doctorat : chimie organique des substances naturelles)." Reims, 1998. http://www.theses.fr/1998REIMP213.

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Foucat, Loïc. "Etude par rmn de la dynamique rotationnelle du malononitrile." Paris 6, 1987. http://www.theses.fr/1987PA066377.

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Etude de cette molecule de type rotateur asymetrique en solution dans ch::(2)cl::(2), tetrahydrofurane et diglyne. A l'aide de la theorie de la "relaxation couplee" determination des valeurs des trois constantes de diffusion du solute et des densites spectrales relatives aux mecanismes de relaxation dipole-dipole, intra-et intermoleculaire. Etude de l'influence du taux de deuteriation du solvant sur la relaxation du solute dans le cas de ch::(2)cl::(2). Ecart des densites spectrales par rapport aux previsions theoriques. Test de la validite de plusieurs modeles hydrodynamiques: celui de knauss et evans s'avere le mieux adapte
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DAGANE, ISHAY. "Systeme darc-epios : elucidation structurale par rmn 13c. application du modele sous-structure/sous-spectre a la generation des structures." Paris 7, 1989. http://www.theses.fr/1989PA077265.

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Un systeme expert d'elucidation structurale a partir d'un spectre rmn 13c le systeme epios, a ete developpe. La base de connaissances de ce systeme est constituee de regles de production et d'un reseau d'objets, issus de l'analyse et de la modelisation des informations contenues dans une banque de donnees de 16000 composes et 21000 spectres. La saisie du spectre experimental d'un compose chimique, de sa formule moleculaire et des contraintes supplementaires eventuelles permettent de selectionner les fragments sous-structuraux susceptibles de figurer dans la structure cible et de creer un graphe de generation. Un dialogue optionnel entre l'utilisateur et le systeme, et des heuristiques guident le parcours du graphe et menent a la generation de structures candidates assignees, compatibles avec les donnees initiales
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Khandar-Shahabad, Abdollali. "Étude par résonance magnétique nucléaire de la dynamique du directeur des nématiques en rotation dans un champ magnétique." Paris 11, 1986. http://www.theses.fr/1986PA112247.

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Pour des nématiques d'anisotropie de susceptibilité diamagnétique positive, le directeur s'aligne sur l'axe de rotation lorsque l'angle entre le champ magnétique et l'axe de rotation est compris entre zéro et l'angle magique, ce qui conduit à une réduction cohérente des interactions anisotropes. À l'angle magique, le spectre rmn est module par la rotation, ce qui prouve que le directeur est distribué de manière homogène dans tout l'échantillon. Pour les nématiques a anisotropie magnétique presque nulle, le directeur s'oriente parallèlement au champ de force rotationnel et non plus dans la direction du champ magnétique, ce qui constitue la première démonstration de l'anisotropie inertielle de ces milieux
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Dupont, Virginie. "Synthèse et analyse structurale de n-hydroxy peptides." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL099N.

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Le but de cette thèse est de reconnaitre l'influence structurale de la n-hydroxylation d'une séquence peptidique. Pour cela, les homologues n-hydroxyles de dipeptides protégés à leurs extrémités par une fonction amide ont été préparés et étudiés en solution par RMN et spectroscopie ir, à l'état solide par diffraction des rayons X, et soumis à une analyse théorique par dynamique moléculaire. Le premier chapitre est un rappel des connaissances nécessaires à la compréhension de la suite. Le second chapitre décrit la synthèse des n-hydroxypeptides examinés et les méthodes d'étude structurale utilisées. Les résultats sont exposés dans le troisième chapitre, et le quatrième chapitre est une discussion de ces résultats en relation avec les observations conduites sur des composés pseudopeptidiques voisins. Des modes de repliements particuliers aux n-hydroxypeptides ont été reconnus et caractérisés. Leur stabilité et leur géométrie sont comparées à celles des motifs voisins dans les peptides
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Haddad, Mansour. "Synthèse des ( +ou- ) lupinine et ( +ou- ) isoretronecanol : extension à des composés homologues." Paris 6, 1986. http://www.theses.fr/1986PA066062.

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L’ensemble de ce travail fait d'abord état de la mise au point de deux types de réactions originales: la réaction d'imidoylation des lactames fonctionnalisés à l'azote, et la condensation d'amines sur des cyclopropyl -cetoesters pour obtenir des dihydropyrroles. Les applications possibles de ces deux types de réactions sont ensuite développées ; elles se sont traduites par la synthèse de deux produits naturels: ( +ou- ) lupinine et le ( +ou- ) isoretronecanol. L’obtention de composés homologues montre la généralité de ces deux nouvelles réactions.
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Craescu, Constantin. "Etudes par **(1)h rmn a haute resolution de la structure et de la dynamique des hemoglobines humaines." Paris 6, 1987. http://www.theses.fr/1987PA066323.

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Books on the topic "Spectre RMN"

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Xianwei, Zhou, and Wang Chunjiang, eds. Ren zhi wu xian dian: Renzhi wuxiandian. Beijing Shi: Guo fang gong ye chu ban she, 2008.

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Zhongguo wu ran shui ti guang pu te zheng. Beijing: Hai yang chu ban she, 2001.

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Zhi pu xue zai tian ran you ji hua xue zhong di ying yong. Beijing: Ke xue chu ban she, 1987.

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Marino, Marcos. Quantum chromodynamics. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.32.

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This article focuses on chiral random matrix theories with the global symmetries of quantum chromodynamics (QCD). In particular, it explains how random matrix theory (RMT) can be applied to the spectra of the Dirac operator both at zero chemical potential, when the Dirac operator is Hermitian, and at non-zero chemical potential, when the Dirac operator is non-Hermitian. Before discussing the spectra of these Dirac operators at non-zero chemical potential, the article considers spontaneous symmetry breaking in RMT and the QCD partition function. It then examines the global symmetries of QCD, taking into account the Dirac operator for a finite chiral basis, as well as the global symmetry breaking pattern and the Goldstone manifold in chiral random matrix theory (chRMT). It also describes the generating function for the Dirac spectrum and applications of chRMT to QCD to gauge degrees of freedom.
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Zinn-Justin, Paul, and Jean-Bernard Zuber. Multivariate statistics. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.28.

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This article considers some classical and more modern results obtained in random matrix theory (RMT) for applications in statistics. In the classic paradigm of parametric statistics, data are generated randomly according to a probability distribution indexed by parameters. From this data, which is by nature random, the properties of the deterministic (and unknown) parameters may be inferred. The ability to infer properties of the unknown Σ (the population covariance matrix) will depend on the quality of the estimator. The article first provides an overview of two spectral statistical techniques, principal components analysis (PCA) and canonical correlation analysis (CCA), before discussing the Wishart distribution and normal theory. It then describes extreme eigenvalues and Tracy–Widom laws, taking into account the results obtained in the asymptotic setting of ‘large p, large n’. It also analyses the results for the limiting spectra of sample covariance matrices..
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Borodin, Alexei. Random matrix representations of critical statistics. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.12.

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This article examines two random matrix ensembles that are useful for describing critical spectral statistics in systems with multifractal eigenfunction statistics: the Gaussian non-invariant ensemble and the invariant random matrix ensemble. It first provides an overview of non-invariant Gaussian random matrix theory (RMT) with multifractal eigenvectors and invariant random matrix theory (RMT) with log-square confinement before discussing self-unfolding and not self-unfolding in invariant RMT. It then considers a non-trivial unfolding and how it changes the form of the spectral correlations, along with the appearance of a ghost correlation dip in RMT and Hawking radiation. It also describes the correspondence between invariant and non-invariant ensembles and concludes by introducing a simple field theory in 1+1 dimensions which reproduces level statistics of both of the two random matrix models and the classical Wigner-Dyson spectral statistics in the framework of the unified formalism of Luttinger liquid.
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Bouchaud, Jean-Phillipe, and Marc Potters. Asymptotic singular value distributions in information theory. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.41.

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This article examines asymptotic singular value distributions in information theory, with particular emphasis on some of the main applications of random matrices to the capacity of communication channels. Results on the spectrum of random matrices have been adopted in information theory. Furthermore, information theorists, motivated by certain channel models, have obtained a number of new results in random matrix theory (RMT). Most of those results are related to the asymptotic distribution of the (square of) the singular values of certain random matrices that model data communication channels. The article first provides an overview of three transforms that are useful in expressing the asymptotic spectrum results — Stieltjes transform, η-transform, and Shannon transform — before discussing the main results on the limit of the empirical distributions of the eigenvalues of various random matrices of interest in information theory.
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Beenakker, Carlo W. J. Classical and quantum optics. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.36.

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This article focuses on applications of random matrix theory (RMT) to both classical optics and quantum optics, with emphasis on optical systems such as disordered wave guides and chaotic resonators. The discussion centres on topics that do not have an immediate analogue in electronics, either because they cannot readily be measured in the solid state or because they involve aspects (such as absorption, amplification, or bosonic statistics) that do not apply to electrons. The article first considers applications of RMT to classical optics, including optical speckle and coherent backscattering, reflection from an absorbing random medium, long-range wave function correlations in an open resonator, and direct detection of open transmission channels. It then discusses applications to quantum optics, namely: the statistics of grey-body radiation, lasing in a chaotic cavity, and the effect of absorption on the reflection eigenvalue statistics in a multimode wave guide.
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Zabrodin, Anton. Financial applications of random matrix theory: a short review. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.40.

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This article reviews some applications of random matrix theory (RMT) in the context of financial markets and econometric models, with emphasis on various theoretical results (for example, the Marčenko-Pastur spectrum and its various generalizations, random singular value decomposition, free matrices, largest eigenvalue statistics) as well as some concrete applications to portfolio optimization and out-of-sample risk estimation. The discussion begins with an overview of principal component analysis (PCA) of the correlation matrix, followed by an analysis of return statistics and portfolio theory. In particular, the article considers single asset returns, multivariate distribution of returns, risk and portfolio theory, and nonequal time correlations and more general rectangular correlation matrices. It also presents several RMT results on the bulk density of states that can be obtained using the concept of matrix freeness before concluding with a description of empirical correlation matrices of stock returns.
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Eynard, Bertrand. Random matrices and loop equations. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198797319.003.0007.

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This chapter is an introduction to algebraic methods in random matrix theory (RMT). In the first section, the random matrix ensembles are introduced and it is shown that going beyond the usual Wigner ensembles can be very useful, in particular by allowing eigenvalues to lie on some paths in the complex plane rather than on the real axis. As a detailed example, the Plancherel model is considered from the point of RMT. The second section is devoted to the saddle-point approximation, also called the Coulomb gas method. This leads to a system of algebraic equations, the solution of which leads to an algebraic curve called the ‘spectral curve’ which determines the large N expansion of all observables in a geometric way. Finally, the third section introduces the ‘loop equations’ (i.e., Schwinger–Dyson equations associated with matrix models), which can be solved recursively (i.e., order by order in a semi-classical expansion) by a universal recursion: the ‘topological recursion’.
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Book chapters on the topic "Spectre RMN"

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Fein, Elizabeth. "Hardwired." In Living on the Spectrum, 108–32. NYU Press, 2020. http://dx.doi.org/10.18574/nyu/9781479864355.003.0005.

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Sociologist Nikolas Rose has posited the emergence of a “neurochemical self” organized around the assumption that our personal characteristics, moods and desires arise from our brain chemicals, and are amenable to molecular modulation through psychiatric drugs. Drawing on clinical ethnography of a series of support groups run by and for individuals diagnosed with Asperger’s syndrome and other autism spectrum conditions, this chapter charts the emergence of a contrasting model of the “neurostructural” self, oriented around the concept of developmental disability and its presumption of fixed innateness and lifelong course. In rejecting the demands for flexibility and adaptation entailed in neurochemical selfhood, this counterdiscourse of hardwired genetic and synaptic brain structure functions as a form of resistance against the demand for constant fluidity and change that characterizes late modernity. However, its core assumptions of a self that is fixed and inalterable are increasingly threatened by the ascendance of neural plasticity as a new mode of both conceptualizing and intervening on the self.
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Umar, Raza, and Asrar U. H. Sheikh. "Spectrum Access and Sharing for Cognitive Radio." In Developments in Wireless Network Prototyping, Design, and Deployment, 241–71. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1797-1.ch012.

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Cognitive radio (CR) has emerged as a smart solution to spectrum bottleneck faced by current wireless services, under which licensed spectrum is made available to intelligent and reconfigurable secondary users. CR technology enables these unlicensed secondary users to exploit any spectrum usage opportunity by adapting their transmission parameters on the run. In this chapter, the authors discuss the characteristic features and main functionality of CR oriented technology. Central to this chapter is Spectrum sensing (SS), which has been identified as a fundamental enabling technology for next generation wireless networks based on CR. The authors compare different SS techniques in terms of their sensing accuracy and implementation and computational complexities along with merits and demerits of these approaches. Various challenges facing SS have been investigated, and possible solutions are proposed.
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Fein, Elizabeth. "The Summer of Adventure." In Living on the Spectrum, 25–52. NYU Press, 2020. http://dx.doi.org/10.18574/nyu/9781479864355.003.0002.

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This chapter chronicles a summer of clinical ethnography at a camp for youth with Asperger’s syndrome and related autism spectrum conditions, run by a close-knit community of live-action role-playing (LARP) gamers aiming to be inclusive of neurodiversity. Within this alternative culture with its alternative norms, the neurodevelopmental differences associated with Asperger’s took on new and valued meanings and manifestations. The chapter reviews predominant theories about cognition in autism (theory of mind, executive function, and weak central coherence), depicting these attributes not as individual deficits but as collaborative engagements with the physical, cultural, and symbolic materials of the surrounding world. Autism, the chapter proposes, is characterized by a heightened reliance on external systems of organization to create a sense of experiential coherence and to fend off existential threats of meaninglessness and chaos. LARP games offer one such system of organization through their framework of stable, shared narratives, and genre conventions. These resources support interpersonal coordination, bringing together people who share relevant cognitive characteristics into a tenuous but deeply valued community.
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Ferrer, Gemma García. "The Observation." In Advances in Marketing, Customer Relationship Management, and E-Services, 78–91. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6371-8.ch006.

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This chapter discusses the observational technique as a scientific method that includes a broad spectrum of techniques, which could be classified in several ways. On the basis of the observation concept, its characteristics, advantages, and inconveniences are described. A quick run-through of the deployment of observation in other social sciences such as psychology, sociology, and anthropology is made, noticing to what extent market research has leveraged the latest advances in these areas, most specifically in psychology. It analyzes how to run the sampling in observation and also presents the registry and coding process. After the description and classification of the different observation types, a special mention is made to ethical aspects. Throughout this chapter the authors expose real research cases in which observation has being applied.
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Costello, Laura, and Shafeek Fazal. "Developing Unique Study Room Reservation Systems." In Advances in Library and Information Science, 168–76. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2676-6.ch008.

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Room reservation systems are important in an increasingly collaborative library environment. This chapter explores two case studies of libraries experimenting with room-bound, electronic reservation kiosks. Teachers College, Columbia University built a native app to run on room-coded iPads, while Stony Brook University developed custom code to run Steelcase's RoomWizard system in a university environment. This chapter will discuss the particularities and challenges of both systems while addressing the solutions from other libraries discussed in the literature. Room reservation systems are a challenge for libraries of all types and many diverse solutions, from using vendor solutions to creating tools from scratch, have emerged in recent years. This chapter will explore two stories on that spectrum with attention to the potential applications and solutions emerging in this area.
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Shandler, Jeffrey. "Literacy." In Yiddish, 120–38. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190651961.003.0011.

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This chapter examines the role of print publications in Yiddish, beginning in the sixteenth century. Print stabilized Yiddish and also endowed it with an elasticity that was unprecedented in diaspora Jewish vernaculars, enabling it to traverse all of northern Europe. As a largely market-driven phenomenon, Yiddish eventually became an international language read by millions. Its print culture ran the gamut of Jewish ideologies and extended across the spectrum of high and low culture. The place of Yiddish in the shifting constellation of languages engaged by Ashkenazim is reflected in translations into and out of Yiddish, as well as in multilingual texts.
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Taniguchi, Yoshihiro, and Naohiro Takeda. "High-Pressure FTIR Studies of the Secondary Structure of Proteins." In High Pressure Effects in Molecular Biophysics and Enzymology. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195097221.003.0010.

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Infrared spectra of five globular proteins (bovine pancreas ribonuclease A, horse skeletal muscle myoglobin, bovine pancreas insulin, horse heart cytochrome c, egg white lysozyme) in 5% D2O solutions (pD 7.0) were measured as a function of pressure up to 1470 MPa at 30 °C. According to the second-derivative spectral changes in the observed amide I band of the proteins, which indicate that the α-helix and β-sheet substructures of the secondary structures break dramatically into the random coil conformation, ribonuclease A and myoglobin are denatured reversibly at 850 MPa and 350 MPa, respectively. Lysozyme denatures partially and reversibly at 670 MPa, as shown by decrease in the α-helix and β-turn substructures, but no change occurs in the random coil and β-sheet substructures. The secondary structure of cytochrome c is not disrupted at pressures up to 1470 MPa, and partial transformation of the α-helix of insulin to random coil starts at 960 MPa. Hydrogen-deuterium exchange of protons on the amide groups in the protein interior is increased by external pressure and is associated with the pressure-induced protein conformational changes. A number of studies on the effects of pressure on protein denaturation have been carried out using various high-pressure detection methods: ultraviolet absorbance spectroscopy (Brandts et al., 1970; Hawley, 1971), visible absorbance spectroscopy (Zipp & Kauzmann, 1973), fluorescence intensity spectroscopy (Li et al., 1976), polarization fluorescence spectroscopy (Chryssomallis et al., 1981), and enzyme activity assays (Taniguchi & Suzuki, 1983; Makimoto et al., 1989). These techniques have the great advantage of being applicable to pressure-induced reversible denaturation of proteins to identify the thermodynamic parameters, especially the volume change and compressibility of a protein in solution, because the experiments can be run under dilute conditions at a protein concentration of less than 0.05% w/v. Therefore, these data reflect the intramolecular phenomena of reversible pressure changes and provide the volume changes accompanying the denaturation of proteins, which are due to the difference in partial molal (specific) volume between the native and denatured proteins in solution.
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Torres, Guillén, and Richard Rogers. "Political news in search engines." In The Politics of Social Media Manipulation. Nieuwe Prinsengracht 89 1018 VR Amsterdam Nederland: Amsterdam University Press, 2020. http://dx.doi.org/10.5117/9789463724838_ch03.

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The research enquires into the susceptibility of Google’s search engine to provide users with questionable information when querying political parties and their issues during the run-up to the Dutch provincial and European parliamentary elections. Which rankings has the search engine assigned to problematic sources when querying political parties and their issues? Are there particular political issues and party spaces where these sources are prevalent or entirely absent? Do the ranks and amounts increase as the elections draw near? In all, it was found that hyperpartisan sources are rather pervasive in the search-demarcated political space, but far more so for certain actors and their issues on the far right of the political spectrum.
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Mohapatra, Mohamayee, and Chitti Babu Baladhandautham. "Implementation of Improved Control Strategy of DC-AC Converter using Delta-Sigma Modulator." In Smart Grid as a Solution for Renewable and Efficient Energy, 249–72. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0072-8.ch011.

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This Chapter presents a comparative study between two current control techniques, namely, conventional Delta Modulator and novel Delta-Sigma Modulator. The use of Delta modulator in variable speed drives poses a problem of noise while converting analog signal in to digital form; to optimize Pulse Width Modulated (PWM) inverter waveforms on-line without any optimization process. But in the Delta-Sigma Modulator the noise varies. It can be successfully applied to over-sampling digital-to-analog and analog-to-digital data converters, switch mode power supplies and inverters It is easy to implement, smooth inverter operation and provides low harmonics at the inverter output. The comparative study between the above said current controllers has been verified by the MATLAB computer simulation in terms of the high frequency power spectra, average switching frequency, rms current error and total harmonic distortion of load current waveforms. The obtained theoretical results are validated with experimental platform based on TMS320F2812 digital signal processor for effectiveness of the study.
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Boudinar, Ahmed Hamida, Azeddine Bendiabdellah, and Noureddine Benouzza. "Diagnosis of the Broken Rotor Bars Faults by Root-MUSIC Method." In Advances in Computer and Electrical Engineering, 59–88. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6989-3.ch003.

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This chapter describes a new diagnosis approach, the Root-MUSIC (RM) method, for identification of the progressive cracking in the rotor of induction motors. This method used initially in the domain of RADAR for localizing mobile targets is being applied to the domain of induction motors diagnosis. This approach has several advantages compared to the conventional power spectral density estimation (PSD) by periodogram technique. Indeed, the main advantage of this approach is its very good frequency resolution for a very short acquisition time, something impossible to achieve with the conventional method. However, in order to reduce the computation time which is the main drawback of the RM method, this method will be applied to only a specified frequency band: one that carries information about the sought fault.
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Conference papers on the topic "Spectre RMN"

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Chatterjee, Payel, and Abhinav Gupta. "Seismic Qualification of Equipment: A PRA-Consistent Framework." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60674.

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The seismic probabilistic risk assessment (SPRA) for a nuclear power plant involves the estimation of fragility curves for plant equipment. The seismic qualification of an equipment based on testing requires the equipment to continue to function when subjected to a specific test response spectrum (TRS). Broad banded ground motions have been found to cause more damage to equipment than the filtered narrow banded excitations. As a result, the definition of acceleration capacity used in the fragility models use clipped response spectra for both test response spectrum (TRS) and required response spectrum (RRS). The main purpose of the clipping factors is to convert a narrow banded response spectrum to a broad banded spectrum. The broadband correction factor and the modal interaction correction factors together contribute to the definition of clipping factor. The current study involves reconciliation with previous research by generating the mean response factor for different waveforms and subsequently the root-mean-square (RMS) severity ratio as a function of bandwidth. This ratio can be estimated for real earthquakes from their peak-to-rms values and the peak spectral values. In addition it can be shown that in case of real narrow banded earthquakes, this ratio is even lower and therefore the clipping would be greater. The modal interaction correction factor which considers the effect of interaction between different modes in case of broad banded time histories has also been investigated. The primary objective of this work is to study the existing Conservative Deterministic Failure Margin (CDFM) and Probabilistic approaches for estimating these factors as per the guidelines of EPRI [2] and apply the same to real life ground motions. It has been observed that the recommended practices are based on studying the behavior of random ground motions generated artificially for different bandwidths and center frequencies. The present study aims towards a more realistic fragility estimation of equipment by studying the spectral response of equipment based on actual ground motions. The purpose is to evaluate clipping factors that are consistent with Seismic Probabilistic Risk Assessment.
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Rupp, Cory J., and Gregory W. Antal. "Implementation of an Efficient RMS Algorithm for Random Analysis in Vibrata™." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-71134.

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When analyzing forced dynamic response to random excitation, obtaining root-mean-square (RMS) results without having to compute the underlying power spectral density (PSD) functions can significantly reduce solution time and memory usage. An algorithm for such calculations published by de la Fuente [1, 2] has been incorporated in ATA Engineering’s Vibrata™ program, a GUI- and text-file-driven modal dynamic analysis tool that works with Femap™ and MATLAB® to provide random, transient, harmonic, and response spectrum analysis. This paper describes some of the difficulties encountered in implementing this random response method and how they were overcome. It then shows two examples of the algorithm’s use in Vibrata and compares those computation times and solutions to standard PSD-based computations.
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Forristall, George Z., and Alexia Aubault. "Diffraction Corrections for Platform Wave Measurements." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24649.

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Many measurements of hurricane waves have been made from deep water production facilities in the Gulf of Mexico. Measurements made on different sides of the platforms differ from one another and the incident wave field because the platforms diffract and radiate waves. For many purposes, we would like to know the incident wave field. Forristall and Aubault (OMAE2013-10860) used WAMIT diffraction calculations to successfully invert wave spectra measured under a TLP model in the Marin offshore basin. We have now used similar techniques to invert spectra measured at offshore platforms during Hurricanes Gustav and Ike. We do not have any measurements of the undisturbed wave spectra for testing the results. The tests were made by checking whether inverse calculations on all the gauges deployed at different locations on the platforms could produce the same undisturbed wave field. Wave directions are needed for the diffraction calculations. Information from the wave gauges can be used to find the directions by optimizing the agreement among the inverted power spectra. To perform the optimization, we varied both the mean direction and spreading at each spectral frequency. The rms difference between the inverted probe spectral densities was minimized at each spectral frequency. When spectra from four gauges on a platform are inverted, they agree reasonably well with each other. The average of the inverted significant wave heights is slightly lower than the average of the measured significant wave heights. But when spectra from pairs of the four probes are inverted, the results differ depending on which pair is used. This result implies that our inversion method cannot be used on data from platforms with two probes, and casts doubt on the accuracy of four probe inversions.
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Shi, Guanlin, Yishu Qiu, and Kan Wang. "Enhancement of Stochastic Sampling Capability in RMC Code." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81982.

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As people pay more attention to nuclear safety analysis, sensitivity and uncertainty analysis has become a research hotspot. In our previous research, we had developed an integrated, built-in stochastic sampling module in the Reactor Monte Carlo code RMC [1]. Using this module, we can perform nuclear data uncertainty analysis. But at that time the uncertainty of fission spectrum was not considered. So, in this work, the capability of computing the uncertainty of keff induced by the uncertainty of fission spectrum, including tabular data form and formula form, is implemented in RMC code based on the stochastic sampling method. The algorithms and capability of computing keff uncertainty induced by uncertainty of fission spectrum in RMC are verified by comparison with the results calculated by the first order uncertainty quantification method [2].
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Al-Samman, Imad, Matteo Artuso, Henrik Christiansen, Angela Doufexi, and Mark Beach. "Envisioning Spectrum Management in Virtualised C-RAN." In 2017 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2017. http://dx.doi.org/10.1109/wcnc.2017.7925555.

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Jiao, Kajia, Xuanheng Li, Miao Pan, Fan Jiang, and Ming Li. "Trading Based Service-Oriented Spectrum-Aware RAN-Slicing Under Spectrum Sharing." In 2020 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2020. http://dx.doi.org/10.1109/wcnc45663.2020.9120689.

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Moraga, Claudio, and Radomir S. Stankovic. "Properties of the Two-Sided RMF Spectrum of Matrices." In 2017 IEEE 47th International Symposium on Multiple-Valued Logic (ISMVL). IEEE, 2017. http://dx.doi.org/10.1109/ismvl.2017.37.

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Melgar, Alirio, Varghese A. Thomas, Justin Lavrencik, and Stephen E. Ralph. "Parameter Extraction through Joint Optimization of Modulation Response and RIN Spectra." In Optical Fiber Communication Conference. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/ofc.2018.m1i.6.

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Rodrigues, Clayton Eduardo, Cairo Lúcio Nascimento Júnior, and Domingos Alves Rade. "Machine Learning Techniques for Fault Diagnosis of Rotating Machines Using Spectrum Image of Vibration Orbits." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1101.

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A comparative analysis of machine learning techniques for rotating machine faults diagnosis based on vibration spectra images is presented. The feature extraction of dierent types of faults, such as unbalance, misalignment, shaft crack, rotor-stator rub, and hydrodynamic instability, is performed by processing the spectral image of vibration orbits acquired during the rotating machine run-up. The classiers are trained with simulation data and tested with both simulation and experimental data. The experimental data are obtained from measurements performed on an rotor-disk system test rig supported on hydrodynamic bearings. To generate the simulated data, a numerical model of the rotating system is developed using the Finite Element Method (FEM). Deep learning, ensemble and traditional classication methods are evaluated. The ability of the methods to generalize the image classication is evaluated based on their performance in classifying experimental test patterns that were not used during training. The obtained results suggest that despite considerable computational cost, the method based on Convolutional Neural Network (CNN) presents the best performance for classication of faults based on spectral images.
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Artyushenko, Vladimir Mikhaylovich, and Vladimir Ivanovich Volovach. "The Stationary Variance of the a Posteriori Error of Quadrature Signal Processing Against Noise with a Band-Limited Spectrum." In 2020 7th All-Russian Microwave Conference (RMC). IEEE, 2020. http://dx.doi.org/10.1109/rmc50626.2020.9312374.

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Reports on the topic "Spectre RMN"

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Andeen, Jr., Timothy R. Measurement of the W Boson Mass with the D0 Run II Detector using the Electron P(T) Spectrum. Office of Scientific and Technical Information (OSTI), June 2008. http://dx.doi.org/10.2172/935247.

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