Bibliografías temáticas / RMN en flux

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Literatura académica sobre el tema "RMN en flux"

Autor: Grafiati
Publicado: 25 de enero de 2025
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "RMN en flux"

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Perrillat-Mercerot, A., A. Miranville, C. Guillevin, and R. Guillevin. "Modélisation mathématique des flux de glutamate intracérébraux intégrant les données RMN spectroscopiques." Journal of Neuroradiology 45, no. 2 (2018): 92. http://dx.doi.org/10.1016/j.neurad.2018.01.014.

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Beauvieux, M. C., P. Couzigou, H. Gin, V. Rigalleau, and J. L. Gallis. "P175 Les flux unidirectionnels du métabolisme du glycogène du foie isolé sont inhibés par la perfusion d’éthanol 10 mM en présence d’insuline. Étude RMN chez le rat." Diabetes & Metabolism 34 (March 2008): H89. http://dx.doi.org/10.1016/s1262-3636(08)73087-8.

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Mhd Noor, Ervina Efzan, and Ayodeji Samson Ogundipe. "Effect of fluxes on Sn-Zn-Bi solder alloys on copper substrate." Soldering & Surface Mount Technology 29, no. 4 (2017): 225–34. http://dx.doi.org/10.1108/ssmt-05-2017-0014.

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Purpose This paper aims to investigate the effect different fluxes have on the mechanical properties of lead-free solders, specifically Sn-Zn-Bi solder alloy. The solder billets were soldered in between copper substrates and flux was applied. The mechanical tests carried out on the solder alloys were tensile and shear tests. They were experimented on with different fluxes, namely, water-soluble (paste), rosin mildly activated (RMA) and insoluble (RMA) flux. From these experiments, the ultimate tensile strength, shear strength, elongation, yield stress, Young’s modulus and the stress-strain cur
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Ryabenko, L. G., V. S. Zelentsov, L. R. Ovcharova, et al. "The oil flax variety RFN." Oil Crops 177, no. 1 (2019): 143–45. http://dx.doi.org/10.25230/2412-608x-2019-1-177-143-145.

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Travis, Mike. "RCN must flex its union muscles." Nursing Standard 30, no. 45 (2016): 30. http://dx.doi.org/10.7748/ns.30.45.30.s30.

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Vettier, Christian, and Anne Le Noel. "Le réacteur à haut flux et l'institut Laue-Langevin." Revue Générale Nucléaire, no. 6 (November 2000): 61–62. http://dx.doi.org/10.1051/rgn/20006061.

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Silva, Priscila de Souza, and Silvana Nunes de Queiroz. "Migração intraestadual no Rio Grande do Norte." Ideias 11 (May 1, 2020): e020008. http://dx.doi.org/10.20396/ideias.v11i0.8658503.

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O principal objetivo deste trabalho é analisar a evolução recente da migração intraestadual no Rio Grande do Norte, a partir dos fluxos entre a Região Metropolitana de Natal (RMN) e o interior do estado, e o interior e a Região Metropolitana de Natal, durante os quinquênios de 1995/2000 e 2005/2010. Para tanto, a principal fonte de informações são as amostras dos microdados dos Censos Demográficos de 2000 e 2010 fornecidos pelo Instituto Brasileiro de Geografia e Estatística (IBGE). Os principais resultados mostram maior dinamização das migrações dentro do próprio estado e intensificação da te
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Hanine, Ilyas. "La difficile équation économique de la chaleur nucléaire." Revue Générale Nucléaire, no. 3 (2024): 44–45. http://dx.doi.org/10.1051/rgn/20243044.

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Les modèles économiques dans le secteur de l’énergie jouent un rôle crucial dans la sécurisation des flux de revenus attendus par les financeurs. Or ces modèles évoluent et nécessitent une adaptation constante de tous les acteurs.
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Hugrass, WN. "A General Physical Model for RMF Current Drive." Australian Journal of Physics 41, no. 6 (1988): 765. http://dx.doi.org/10.1071/ph880765.

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Rotating magnetic fields (RMF) have been used successfuly to drive steady currents in plasmas in many experiments. Some recent experimental and theoretical results did not seem to agree with the standard model based on assuming that the electrons are 'tied' to the lines of the RMF. A more general model based on the concept of flux preserving motion is developed in this paper. It appears that this model provides a unified approach for predicting the qualitative features of RMF current drive under a variety of conditions.
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Perthame, Benoît, Nicolas Vauchelet, and Zhian Wang. "The flux limited Keller–Segel system; properties and derivation from kinetic equations." Revista Matemática Iberoamericana 36, no. 2 (2019): 357–86. http://dx.doi.org/10.4171/rmi/1132.

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Tesis sobre el tema "RMN en flux"

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Higazi, Ahmed. "Contribution à l'étude des profils des vitesses des fluides dans les conduites par l'imagerie de flux RMN." Toulouse 3, 1993. http://www.theses.fr/1993TOU30032.

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Ce travail porte sur l'etude des profils de vitesse d'ecoulement des fluides (newtoniens, non-newtoniens) et le calcul de la contrainte de cisaillement a partir des profils de vitesse mesures par la resonance magnetique nucleaire (rmn) a l'echelle macroscopique et a l'echelle microscopique. Ce travail comporte deux volets, le premier volet concerne l'analyse theorique du phenomene de la rmn et les principes de l'imagerie de flux a deux echelles. Le deuxieme volet concerne l'analyse experimentale, il comporte trois series d'experiences effectuees sur un spectro-imageur de 2. 35 tesla, afin de m
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WECKER, DIDIER. "Imagerie de flux par resonance magnetique nucleaire." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13070.

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Deux techniques sont presentees: les images a contraste de phase (reelles, imaginaires et de phase) qui permettent d'etudier les mouvements des parois cardiaques et l'angiographie irm obtenue par soustraction de deux images dans lesquelles les fluides en ecoulement donnent une intensite de signal differente. Trois methodes sont comparees. Une technique de "cine" irm basee sur la sequence echo de gradient ainsi que ses applications pour caracteriser les pathologies valvulaires est presentee
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Mahmoud, Mohamed. "Effets de modifications génétiques et environnementales sur le métabolisme de bactéries lactiques : étude quantitative de flux par SMRI et 2H-RMN en abondance naturelle." Nantes, 2004. http://www.theses.fr/2004NANT2013.

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L'influence des facteurs génétiques et environnementaux sur l'utilisation des substrats au cours de la fermentation par les bactéries lactiques a été étudiée par le biais des méthodes isotopiques quantitatives. L'étude a été menée sur trois plans. Dans la première partie, on a fait varier de façon systématique les concentrations en glucose et en citrate. Dans la deuxième partie, deux souches génétiquement manipulées, dont les gènes codant pour deux enzymes clés ont été successivement modifiés, ont été choisis comme modèle d'étude. Il a pu être établi, grâce aux études isotopiques menées par SM
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Beuste, Christophe. "Analyse modulaire in vivo du contrôle du flux énergétique dans le muscle squelettique de rat par spectroscopie RMN 31P : influence de l'hypoxie et de l'activité physique." Bordeaux 2, 2007. http://www.theses.fr/2007BOR21483.

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Nous étudions les propriétés cinétiques in vivo de l’énergétique dans le muscle squelettique actif. Le métabolisme énergétique est abordé comme un système de transfert d’énergie via des intermédiaires métaboliques : un système à deux modules (Producteur et Consommateur) connectés par un intermédiaire énergétique commun (PCr). L’analyse MoCA associée à la mesure de PCr par SRM 31P permet d’obtenir in vivo les coefficients d’élasticité et de contrôle pour une large gamme d’activité. Notre première étude montre un déplacement du contrôle sur le flux, de la demande vers la production, à mesure que
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Chaumeil, Myriam. "Mesure du métabolisme énérgétique cérébral par RMN du 31P in vivo : validation méthodologique multimodale et application à l'étude de la neurodégénérescence." Paris 11, 2008. http://www.theses.fr/2008PA112365.

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Au cours des dernières décennies, des techniques de neuroimagerie atraumatiques et non invasives visant à évaluer les flux métaboliques cérébraux ont été développées. Parmi elles, la spectroscopie par résonance magnétique (SRM) du 31P présente l'avantage de permettre la mesure directe du flux cérébral de synthèse d'ATP, mais apparaît encore à ce jour un défi méthodologique. Dans une première étude de neuroimagerie multimodale, la consommation régionale de glucose CMRglc, la vitesse du cycle de Krebs (Vtca) et la vitesse de synthèse d'ATP (Vatp) ont été mesurées dans le cerveau de primate sain
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Boulais, Myrina. "Métabolisme énergétique du spermatozoïde d'huître creuse (Crassostrea gigas)." Thesis, Brest, 2014. http://www.theses.fr/2014BRES0116/document.

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Cette thèse présente une étude du métabolisme énergétique du spermatozoïde d’huître creuse, Crassostrea gigas. Les principaux objectifs sont (1) d’établir la dynamique des caractéristiques cellulaires et biochimiques du spermatozoïde de cette espèce durant la phase de mouvement, (2) d’identifier les voies de synthèse d’ATP et leurs substrats et (3) de déterminer l’implication du métabolisme énergétique dans le succès à la fécondation du spermatozoïde de cette espèce. Les résultats de ce travail montrent la longue durée du mouvement (de 24 à 72h) du spermatozoïde d’huître creuse et le maintien
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ROTH, MURIEL. "Développements méthodologiques en imagerie d'activation cérébrale chez l'homme par résonance magnétique nucléaire : quantification de flux, imagerie de l'effet BOLD et correction des mouvements de la tête." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10016.

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Ce travail est centre sur les developpements methodologiques en imagerie par resonance magnetique des fonctions du cerveau. Une nouvelle methode d'irm fonctionnelle quantitative basee sur la mesure du debit sanguin est tout d'abord decrite. Des images angiographiques ont permis de mesurer le debit dans une veine drainant le cortex moteur. Des variations significatives du debit sanguin entre des periodes de repos, de simulation mentale et d'execution d'un acte moteur ont ete mises en evidence. Ces informations fonctionnelles ne permettent pas de localiser precisement les regions corticales acti
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Netto, Antonio Marchi. "Análise da influência dos parâmetros espectrais da RMN-CWFP em medidas quantitativas em fluxo." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-18092009-090420/.

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A seqüência de pulsos RMN-CWFP (Ressonância Magnética Nuclear - Precessão Livre de Onda Contínua) tem encontrado diversas aplicações na ciência. O presente trabalho analisa a grande sensibilidade dessa seqüência em relação a variações de seus parâmetros espectrais, exclusivamente em uma caracterização teórico-experimental da RMN-CWFP em fluxos do tipo plug-flow, exemplificados por medidas online através do transporte de sementes por uma esteira sob um campo magnético constante no tempo. Foram feitas simulações e medições em várias condições, variando os fatores que influenciam as medidas, como
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Ridel, Mélissa. "Reconstruction du flux d'énergie et recherche de squarks et gluinos dans l'expérience DØ." Paris 11, 2002. http://www.theses.fr/2002PA112101.

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DØ est l'une des 2 expériences du collisionneur pp ̃du Fermi National Accelerator Laboratory près de Chicago. Après 5 années d'arrêt, le Run II a débuté en mars 2001. Il permettra d'explorer de nouveaux domaines de masses de squarks et de gluinos, particules supersymétriques dont la signature en jets et énergie tranverse manquante est l'objet de ce travail. Mais, avant le démarrage, j'ai travaillé sur des améliorations hardware et software de la mesure de l'énergie, essentielle pour les jets et l'énergie transverse manquante. Une simulation des chaînes de lecture et de calibration de chaque vo
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Mayaffre, Hadrien. "Etude d'un supraconducteur organique bidimensionnel par resonance magnetique nucleaire." Paris 11, 1996. http://www.theses.fr/1996PA112115.

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Ce travail porte sur le compose kappa-(et)2cun(cn)2br, supraconducteur organique a caractere bidimensionnel. La technique d'investigation utilisee est la resonance magnetique nucleaire (rmn). Les mesures ont ete menees sur deux types de noyaux, les protons et les carbones du centre de la molecule et. Ceci nous a permis d'avoir acces a des informations tres complementaires sur le systeme. Les conclusions essentielles de cette these sont les suivantes. La phase metallique ne peut pas etre decrite comme un liquide de fermi traditionnel. La rmn revele l'existence de fortes correlations antiferroma
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Libros sobre el tema "RMN en flux"

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Huiqi, Chen, ed. Tou nao hao de ren dou he ya ma ren you: Chan sheng jue jia xiao guo de yin shi shu = Flax seed oil. Chen xing chu ban you xian gong si, 2012.

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1945-, Gerba Charles P., Ning Bo, and Zhang Hongbin, eds. Bie chuan ran wo!: Xian dai sheng huo gong gong wei sheng shou ce = The germ freak's guide to outwitting colds and flu. Dang dai Zhongguo chu ban she, 2006.

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Wright, A. G. Measurement of low light flux. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199565092.003.0007.

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There are three experimental methods for quantifying the flux of light incident on a photocathode: counting the anode output pulses initiated by photoelectrons—known as photon counting; measuring the DC current flowing at the anode—referred to as analogue detection, or charge integration; and determining the rms noise in the anode current—known as shot noise power detection. The statistical performances of the three methods, based on weighting factors, are compared, revealing the theoretical superiority of the photon-counting method. Optimal time allocation between signal and background measur
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Hart-Brinson, Peter. The Gay Marriage Generation. NYU Press, 2018. http://dx.doi.org/10.18574/nyu/9781479800513.001.0001.

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The rapid increase in public support for gay marriage in the United States between 1988 and 2015 is unprecedented in modern polling. How and why did an idea that was once nonsense become a political reality supported by a majority of the population in such a short period of time? This book analyzes historical data, public opinion data, and qualitative interview data to explain the role of generational change in causing the legalization of gay marriage. Despite the evidence of generational change we see all around us, social scientists have struggled to document and explain generational change
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Guarneri, Michael. Vampires in Italian Cinema, 1956-1975. Edinburgh University Press, 2020. http://dx.doi.org/10.3366/edinburgh/9781474458115.001.0001.

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The book takes as its subject a corpus of thirty-three vampire movies made, distributed and exhibited during the peak years of film production in Italy, and certified to be of Italian nationality by state institutions such as the Italian Show Business Bureau and the Italian Film Censorship Office. Positioning itself at the intersection of Italian film history, horror studies and cultural studies, the book asks: why, and how, is the protean, transnational and transmedial figure of the vampire appropriated by Italian cinema practitioners between 1956 and 1975? Or, more concisely, what do the vam
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Castro, Miranda. Complete Homeopathy Handbook: Safe and Effective Ways to Treat Fevers, Coughs, Colds and Sore Throats, Childhood Ailments, Food Poisoning, Flu, and a Wide Ran. Echo Point Books & Media, LLC., 1991.

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Capítulos de libros sobre el tema "RMN en flux"

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Tillman, Lynne. "The Life and Deaths of Jane Bowles (or, Reputation)." In The Bodies That Remain. punctum books, 2018. https://doi.org/10.21983/p3.0212.1.03.

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Jane Bowles was born on February 22, 1917, a short, usually harsh month—it seems right for her. Bowles’s unique writing and life were cut short, derailed by neuroses, alcoholism, physical ill-ness. Her friends remember her sharp wit, agile mind, gaiety, humor, outrageousness. While she lived, stories about wild Jane Bowles circulated in Tangier where she resided from 1948. Back then she was a living legend, but the flux of reputation—here today, gone tomorrow—sends her body of work into and out of print (OP). Among certain contemporary writers, including Lydia Davis, Deborah Eisenberg, Michael
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Stanchina, Gabriella. "4. Constitutive Mind and Constitutive Nature." In The Art of Becoming Infinite. Open Book Publishers, 2025. https://doi.org/10.11647/obp.0442.04.

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The fourth chapter is devoted to uncovering Mou’s idea of “authentic subjectivity.” According to Mou, this new paradigm of subjectivity was inaugurated by Confucius and Mengzi and reached its zenith in specific currents of Song-Ming Neo-Confucian thought. Through an original reformulation and systematization of this inheritance, Mou develops his “moral metaphysics,” in the framework of which his conception of subjectivity finds its definitive foundation. The “authentic subject” should not be confused with one of the poles of the dyad subject/object operating in Western, horizontal and knowledg
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Levine, Alison J. Murray. "Depth of Field." In France in Flux. Liverpool University Press, 2019. http://dx.doi.org/10.3828/liverpool/9781786941787.003.0004.

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This chapter investigates the field of contemporary French documentary as a source for cultural representations of farmland and farm life, a segment of the national territory that has undergone profound change in the past half-century. Farmland, which represents over half of the surface area of metropolitan France, provides employment to an ever-smaller percentage of the population. The amount of land needed to make a living continues to grow, and farms are increasingly run by corporations rather than by people who live and work on the same property. Since 2000, a significant number of French
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Wildman, Steven S., and Han Ei Chew. "Television in Flux." In Understanding the Interactive Digital Media Marketplace. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-61350-147-4.ch030.

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The television landscape is in a state of flux. In this new environment, profit-driven media companies have to balance tradeoffs between traditional and new channels of video distribution to optimize returns on their investments in content generation. This chapter describes the challenges traditional television service providers face in adapting their strategies to an environment in which the internet is playing an increasingly prominent role as a new distribution channel. In the short to intermediate run there is the challenge of finding ways to monetize an internet audience without cannibali
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Cho S.H., Yoo H.Y., Kim D.K., et al. "Development of Strong Magnetizer and Robust Sensor Mount System to Increase Performance in Detecting Defects on Pipeline." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2009. https://doi.org/10.3233/978-1-60750-023-0-337.

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In-Line Inspection (ILI) with MFL tool and Ultrasonics tool is the best and prevailed technology to inspect integrity of buried pipelines. KOGAS developed MFL tool named KogasMFL (ver 1.0) consists of MFC (Magnetic Flux Circuit) module, DAS (Data Acquisition System) module connected by universal joint in 2004, and data analysis system through the field experiments using artificial defects to implement ILI on pipeline owned by KOGAS. But we decided to develop an alternative design to increase performance in piggability and robustness, grow up magnetic flux strength applied to pipe wall, and mad
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Bilston, Sarah. "Plotting the Suburbs." In The Promise of the Suburbs. Yale University Press, 2019. http://dx.doi.org/10.12987/yale/9780300179330.003.0004.

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Novels set in suburban locales represent a world in flux. Beneath the shifting sands of social mobility run thick strands of apparently common knowledge that reassure readers of continuity with the past and the existence of enduring values. These values—such as suspicion of suburban homes’ commodity status, the charge of vulgar furnishing—undoubtedly express suspicion of the new masses. But they also form a means of fostering connections, shared perspectives, in a time of dizzying change.
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O’Shaughnessy, C. L., and 0. Durosinmi-Etti. "The use of hydraulic mechanisms for the development of high flux crossflow microfiltration systems." In European Brewery Convention. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780199636907.003.0081.

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Abstract The main reasons that crossflow microfiltra!ion has not been widely accepted in brewing is due to low filtrate productivity and potential loss of quality components. Studies aimed at understanding the fouling mechanisms involved have shown that filtration performance is influenced by raw materials, distribution of particulates within the beer and the filter membrane material. Three novel techniques for enhancing filtrate productivity without loss of beer components have been demonstrated, warmer filtration, pressure ramping (gradually increasing the pressure during a filter run) and b
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Eaglin, Jennifer. "Proálcool Reimagined, 1985–2003." In Sweet Fuel. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197510681.003.0007.

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Abstract This chapter follows the story of the ethanol program from its rapid collapse in the late 1980s to its resurgence with the launch of the flex-fuel car in 2003. Drought and political mismanagement caused ethanol shortages that encouraged public debate about Proálcool’s long-term viability by 1990. In turn, the new democratic government removed support for the fuel replacement program but continued support for the fuel supplement program under Proálcool II. Propaganda for the revised program focused more on ethanol production’s environmental benefits, the alternative fuel’s contribution
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Shipton, Alyn. "Teddy Hill and Edgar Hayes." In Groovin’ High. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195091328.003.0003.

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Abstract In his autobiography, Dizzy lists the after hours joints where he was one of a coterie of sitters-in, despite the attempts of the American Federation of Musicians to discourage jam sessions. The union disliked club owners who paid a trio and, by encouraging guests, ended up appearing to present a full band, but Dizzy and his fellow trumpeters Charlie Shavers and Barna Warwick took every chance to flex their musical muscles, and ran rings round the union officials who checked up on clubs like George’s, the Yeah Man, the Victoria, the 101 Ranch, and Clark Monroe’s Uptown House.
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Kizza, Joseph M., and Li Yang. "Is the Cloud the Future of Computing?" In Cloud Technology. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6539-2.ch102.

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Cloud computing as a technology is difficult to define because it is evolving without a clear start point and no clear prediction of its future course. Even though this is the case, one can say that it is a continuous evolution of a computer network technology. It extends client-server technology that offers scalability, better utilization of hardware, on-demand applications and storage, and lower costs over the long run. It is done through the creation of virtual servers cloned from existing instances. The cloud technology seems to be in flux; hence, it may be one of the foundations of the ne
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Actas de conferencias sobre el tema "RMN en flux"

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Saif, Ahmad Al. "Validating ILI Run with and without Data Loss." In MPWT 2019. NACE International, 2019. https://doi.org/10.5006/mpwt19-14353.

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Abstract In-Line Inspection (ILI) technology is considered one of the safest and most efficient and reliable inspection method to inspect hydrocarbon pipelines. The retrieved data are usually validated and verified upon successful completion of the inspection. This paper is intended to introduce a new approach to validate the ILI run based on a statistical analysis comparing the new ILI run with a previous ILI run of the same pipeline by leveraging a root mean square (RMS) model to quantify the similarity between the datasets. API-1163 and Canadian Energy Pipeline Association (CEPA) offer cons
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Callahan, T. H. "Green Discoloration Caused by Abietic Acid Solder Flux on Silver Plated Copper Wire." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90460.

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Abstract The green discoloration frequently found on silver plated stranded copper wire soldered using RMA flux was examined to determine the nature and cause of the discoloration. The green material was identified as copper abiet which was determined to not effect the mechanical or electrical properties of the stranded wire.
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Perez, Jaime P. "Affect of Black Powder on Inline Inspection Accuracy." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11091.

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Abstract The accuracy of an inline inspection (ILI) tool such as a Magnetic Flux Leakage (MFL) is affected by the amount of black powder in the pipeline. Parameters such as the ILI tool signal strength, speed, girth weld readings, rotation, and inclination are affected resulting in inaccuracy of the ILI tool reports. The analysis of two subsequent ILI run results may also be affected due to erroneous conclusion that the corrosion depth may be getting worse when in fact the tool is only reporting more accurate readings of existing deep corrosion as the line is cleaned of black powder. Thus, fie
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4

Caskey, G. R., R. S. Ondrejcin, P. Aldred, R. B. Davis, and S. A. Wilson. "Effects of Irradiation on Intergranular Stress Corrosion Cracking of Type 304 Stainless Steel." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90504.

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Abstract Constant extension rate tests (CERT) were run on ten irradiated specimens in continuation of a study of environmental effects on intergranular stress corrosion cracking of Type 304 stainless steel. Specimens of both furnace sensitized and annealed material were irradiated to fluences of 1 to 2 X 1021 neutrons (E≥ 0.1 Mev) per square centimeter at a temperature of ~150°C in a reflector position of the High Flux Isoptope Reactor at ORNL. CERT test conditions duplicated conditions for testing of non-irradiated specimens. The time-to-failure for the sensitized and irradiated specimens sho
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5

Lee, Joo-Hyung, Kwang-Yeun Park, Changbin Joh, Ji-Young Choi, and Imjong. "A New Solenoid-Type Sensor for Nondestructive Stress Estimation in Prestressed Steel Strands." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.1071.

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<p>In this study, we introduce a novel solenoid-type sensor for nondestructively estimating stress in prestressed steel strands through magnetic Barkhausen noise (MBN) measurements. The sensor features a unique dual-coil system: one coil induces a magnetic field, and the other coil detects changes in magnetic flux. This is particularly advantageous in civil engineering, where steel strands are often covered with protective materials, rendering traditional contact-based MBN sensors, commonly used in railway and mechanical engineering, ineffective. Limitations due to the skin effect contro
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6

Li, Wanlin, Kan Wang, Ganglin Yu, and Yaodong Li. "Research on Coupling Scheme of Monte Carlo Burnup Calculation in RMC." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81140.

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Monte Carlo (MC) burnup calculation method, implemented through coupling neutron transport and point depletion solvers, is widely used in design and analysis of nuclear reactor. Burnup calculation is generally solved by dividing reactor lifetime into steps and modeling geometry into numbers of burnup areas where neutron flux and one group effective cross sections are treated as constant during each burnup step. Such constant approximation for neutron flux and effective cross section will lead to obvious error unless using fairly short step. To yield accuracy and efficiency improvement, couplin
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7

Rule, Toby D., and Jungho Kim. "Wall Heat Transfer Measurements in Saturated Pool Boiling of FC-72 on a Small Heated Area." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0794.

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Abstract Local wall heat flux measurements of saturated pool boiling of FC-72 on a small heated area held at constant wall temperature were made. An array of 96 temperature controlled heaters was used to measure the heat flux distribution on this surface. Array-averaged heat flux, RMS variations in heat flux, and local heat flux information is presented. Local heat flux variations are shown to be three to six times larger than variations in the spatially averaged heat flux.
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8

Agrawal, Smita, Terrence Simon, Mark North, and Tianhong Cui. "Unsteady Heat Flux Measurements in Agitated Channel Flows." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48753.

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In this experiment, agitation is used in a rectangular channel for convective heat transfer enhancement. The channel under study is representative of a flow channel in an electronics cooling finned heat sink module. It is open at one end and has a translationally oscillating plate within it that agitates the flow. Contrary to the heat sink cooling channel, the test channel has no net through-flow so that agitation, isolated from throughflow effects, is studied. The channel is divided into three regions. The entry region is close to the open end of the channel. This would be near the fin tips i
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9

Rao, Junjie, Xiaotong Shang, and Kan Wang. "Verification of Shielding Calculation Capability of RMC With H.B.Robinson-2 Pressure Vessel Benchmark." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81694.

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RMC is a 3-D continuous energy Monte Carlo code developed by REAL team in Tsinghua University, China. Besides the capability of fuel cycle burnup calculation, hybrid MPI/OpenMP parallelism strategy, sensitivity and uncertainty analysis, N-TH coupling calculation, shielding calculation methods including general source description, regional importance method, weight window method and source biasing method have been also developed for deep penetration problems. H.B.Robinson-2 Pressure Vessel Benchmark (HBR-2 benchmark) is used for the qualification of pressure vessel neutron flux calculation meth
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10

Woll, Alex, Guanlan Liu, and Zhuoran Zhang. "Risk Modeling for Rupture Mitigation Valve." In 2024 15th International Pipeline Conference. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/ipc2024-129992.

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Abstract Per PHMSAs recent additions to 192.935 (c), if an operator determines that a Rupture Mitigation Valve (RMV) would be an efficient means of adding protection to their High Consequence Areas (HCAs) then they must install them. In order to determine if an RMV would be an efficient means of adding HCA protection, a risk analysis approach must be devised which considers the impacts of installing additional RMVs. RMV installation can improve both failure response time and valve spacing, both of which have an impact on the total time that a rupture with ignition can be sustained. PHMSAs defi
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Informes sobre el tema "RMN en flux"

1

Aceves, S., V. Sahai, and W. Stein. Explanation of how to run the global local optimization code (GLO) to find surface heat flux. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/8214.

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Donna P. Guillen. As-Run Thermal Analysis of the GTL-1 Experiment Irradiated in the ATR South Flux Trap. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1027935.

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Dejus, R. Effect of emittance and rms phase error on angular flux density and pinhole flux-a simulation study of two undulators at 10.5 mm gap including very high harmonics. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/822558.

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Taylor, S., J. Lever, K. Burgess, et al. Sampling interplanetary dust from Antarctic air. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43345.

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We built a collector to filter interplanetary dust particles (IDPs) larger than 5 µm from the clean air at the Amundsen Scott South Pole station. Our sampling strategy used long duration, continuous dry filtering of near-surface air in place of short duration, high-speed impact collection on flags flown in the stratosphere. We filtered ~107 m³ of clean Antarctic air through 20 cm diameter, 3 µm filters coupled to a suction blower of modest power consumption (5–6 kW). Our collector ran continuously for 2 years and yielded 41 filters for analyses. Based on stratospheric concentrations, we predic
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5

Turekian, K. K. (The determination of sup 222 Rn flux from soils based on sup 210 Pb and sup 226 Ra disequilibrium). Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5811774.

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Mondragon, Tomas, Jeffrey Allen, Reena Patel, and Oliver-Denzil Taylor. Comparison of numerical simulations of heat-induced stress in basalt. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49191.

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Energy losses due to excessive noise and heat are primary liabilities in traditional mining processes. Some of the currently researched methods to improve these liabilities involve heating the rock to induce internal stress fractures that make it easier to extract or remove rock with traditional mining equipment. Physical experimentation has yielded useful data that have been applied to numerical simulations of the heating and fracturing of rock, and multiple such simulations have been developed in the commercial multiphysics simulator COMSOL. Since COMSOL is not widely available on DoD high-p
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7

Kamai, Tamir, Gerard Kluitenberg, and Alon Ben-Gal. Development of heat-pulse sensors for measuring fluxes of water and solutes under the root zone. United States Department of Agriculture, 2016. http://dx.doi.org/10.32747/2016.7604288.bard.

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The objectives defined for this study were to: (1) develop a heat-pulse sensor and a heat-transfer model for leaching measurement, and (2) conduct laboratory study of the sensor and the methodology to estimate leaching flux. In this study we investigated the feasibility for estimating leachate fluxes with a newly designed heat-pulse (HP) sensor, combining water flux density (WFD) with electrical conductivity (EC) measurements in the same sensor. Whereas previous studies used the conventional heat pulse sensor for these measurements, the focus here was to estimate WFD with a robust sensor, appr
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8

Turekian, K. K. [The determination of {sup 222}Rn flux from soils based on {sup 210}Pb and {sup 226}Ra disequilibrium]. Progress report. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10116847.

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Keller, David P., Neha Mehendale, and Tronje P. Kemena. Analysis (report) of high- resolution modelling of efficacy, and regional impacts of selected ocean NETs close to the deployment sites. OceanNets, 2023. http://dx.doi.org/10.3289/oceannets_d4.3_v1.

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Many recent ocean modelling studies have demonstrated the added value of enhanced horizontal resolution, although it comes at a high computational cost. However, few modeling studies of ocean-based CDR have been done at high resolution. Here we assess the effects of model resolution on two simulated ocean-based CDR methods, unequilibrated ocean alkalinity enhancement (OAE) and the direct marine capture (DMC) of CO2 from seawater (with assumed permanent storage), in experiments with the FOCI Earth system model. To do this we utilized two FOCI configurations, one with a 1/2° ocean resolution and
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