Articoli di riviste: "RMN en flux"

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Perrillat-Mercerot, A., A. Miranville, C. Guillevin e R. Guillevin. "Modélisation mathématique des flux de glutamate intracérébraux intégrant les données RMN spectroscopiques". Journal of Neuroradiology 45, n. 2 (marzo 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 e 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 (marzo 2008): H89. http://dx.doi.org/10.1016/s1262-3636(08)73087-8.

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Mhd Noor, Ervina Efzan, e Ayodeji Samson Ogundipe. "Effect of fluxes on Sn-Zn-Bi solder alloys on copper substrate". Soldering & Surface Mount Technology 29, n. 4 (4 settembre 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 curve are derived. The results showed that solder billets that were soldered onto copper substrates with water-soluble flux yielded the highest ultimate tensile strength and shear strength values of 9.9961 MPa and 118.836 MPa, respectively. Billets soldered using RMA flux had the highest values of elongation and Young’s modulus, 0.306 mm and 50,257.295 MPa, respectively. However, on viewing the failure of all the specimens under an optical microscope and scanning electron microscope (SEM), specimens soldered using water-soluble flux possessed the least deformities, depicting their higher level of mechanical properties, entailing their strength and ductility, deeming them as the most suitable flux for microelectronic applications. Design/methodology/approach 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), RMA and insoluble flux (RMA) flux. From these experiments, the ultimate tensile strength, shear strength, elongation, yield stress, Young’s modulus and the stress-strain curve are derived. Findings The results showed that solder billets that were soldered onto copper substrates with water-soluble flux yielded the highest ultimate tensile strength and shear strength values of 9.9961 MPa and 118.836 MPa, respectively. Originality/value This paper demonstrated that water-soluble fluxes gave the better strength and were most suitable for microelectronics applications.

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Ryabenko, L. G., V. S. Zelentsov, L. R. Ovcharova, G. G. Galkina, S. V. Sklyarov, S. V. Zelentsov e E. V. Moshnenko. "The oil flax variety RFN". Oil Crops 177, n. 1 (25 maggio 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, n. 45 (6 luglio 2016): 30. http://dx.doi.org/10.7748/ns.30.45.30.s30.

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Vettier, Christian, e Anne Le Noel. "Le réacteur à haut flux et l'institut Laue-Langevin". Revue Générale Nucléaire, n. 6 (novembre 2000): 61–62. http://dx.doi.org/10.1051/rgn/20006061.

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Silva, Priscila de Souza, e Silvana Nunes de Queiroz. "Migração intraestadual no Rio Grande do Norte". Ideias 11 (1 maggio 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 tendência do fluxo metrópole-interior, com expressiva diminuição no saldo negativo do interior em relação à RMN. Em termos de municípios, o destaque foi Mossoró, que apresentou o maior volume de imigrantes e de emigrantes do e para a RMN, e maior redução no saldo migratório negativo, entre os interregnos de 1995/2000 e 2005/2010. Em contrapartida, na RMN houve declínio nos ganhos populacionais vindos do interior e significativo aumento das emigrações para a respectiva área, evidenciando a redução na capacidade de atração, notadamente da capital (Natal), que figura com maior saldo migratório positivo e volume de entradas e saídas, do e para o interior potiguar.Com isso, entre os interregnos em análise, Natal diminui expressivamente o saldo positivo, fruto de um conjunto de externalidades negativas que associadas a maior dinamização do interior, sobretudo, cidades médias, impulsionam a manutenção da população no interior, bem como a reemigração, desconcentrando a população da RMN.

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Hugrass, WN. "A General Physical Model for RMF Current Drive". Australian Journal of Physics 41, n. 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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Hanine, Ilyas. "La difficile équation économique de la chaleur nucléaire". Revue Générale Nucléaire, n. 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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Perthame, Benoît, Nicolas Vauchelet e Zhian Wang. "The flux limited Keller–Segel system; properties and derivation from kinetic equations". Revista Matemática Iberoamericana 36, n. 2 (25 novembre 2019): 357–86. http://dx.doi.org/10.4171/rmi/1132.

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Vladisavljevic, Goran T., e Vladeta Lj Pavasovic. "Determination of Limiting Flux and Threshold Pressure in Stirred Ultrafiltration of Colloidal Suspensions". Collection of Czechoslovak Chemical Communications 62, n. 9 (1997): 1413–22. http://dx.doi.org/10.1135/cccc19971413.

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The stationary permeate flux during ultrafiltration of colloidal suspensions reaches a limiting value, Jl, at high pressure differences. According to the gel polarization model employed here, the existence of this limiting flux is a consequence of gelation of the solution at the membrane-solution interface. The limiting permeate flux, Jl, can easily be determined from experimental data by plotting ∆p/Js against ∆p. Furthermore, the membrane resistance at zero pressure difference, Rm0, and the pressure difference necessary to reach 95 per cent of the limiting flux, i.e. the threshold pressure, ∆pt, may be calculated, too. The agreement between the model and experimental data is satisfactory. The laboratory-made silica sol consisting of uniform spherical particles with a surface average diameter of 18 nm was selected as a working fluid throughout this study.

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Wiening, Karl-Heinz. "Neutron Flux Measurement - an Inherent Part of the Reactor Protection System, also in Technology". Revue Générale Nucléaire, n. 1 (gennaio 2006): 150–54. http://dx.doi.org/10.1051/rgn/20061150.

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Mitchison, T. J., P. Maddox, A. Groen, L. Cameron, Z. Perlman, R. Ohi, A. Desai, E. D. Salmon e T. M. Kapoor. "Bipolarization and Poleward Flux Correlate duringXenopusExtract Spindle Assembly". Molecular Biology of the Cell 15, n. 12 (dicembre 2004): 5603–15. http://dx.doi.org/10.1091/mbc.e04-05-0440.

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We investigated the mechanism by which meiotic spindles become bipolar and the correlation between bipolarity and poleward flux, using Xenopus egg extracts. By speckle microscopy and computational alignment, we find that monopolar sperm asters do not show evidence for flux, partially contradicting previous work. We account for the discrepancy by describing spontaneous bipolarization of sperm asters that was missed previously. During spontaneous bipolarization, onset of flux correlated with onset of bipolarity, implying that antiparallel microtubule organization may be required for flux. Using a probe for TPX2 in addition to tubulin, we describe two pathways that lead to spontaneous bipolarization, new pole assembly near chromatin, and pole splitting. By inhibiting the Ran pathway with excess importin-alpha, we establish a role for chromatin-derived, antiparallel overlap bundles in generating the sliding force for flux, and we examine these bundles by electron microscopy. Our results highlight the importance of two processes, chromatin-initiated microtubule nucleation, and sliding forces generated between antiparallel microtubules, in self-organization of spindle bipolarity and poleward flux.

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Zheng, D. W., Weijia Wen, K. N. Tu e P. A. Totta. "In situ scanning electron microscopy study of eutectic SnPb and pure Sn wetting on Au/Cu/Cr multilayered thin films". Journal of Materials Research 14, n. 3 (marzo 1999): 745–49. http://dx.doi.org/10.1557/jmr.1999.0100.

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Wetting behavior of eutectic SnPb and pure Sn on Au(500 Å)/Cu(1 μm)/Cr(800 Å) layered thin films were monitored in situ in a ramping temperature profile using a scanning electron microscope (SEM) with a vacuum of 10−5–10−6 Torr. We found that the wetting behavior of these two solders in SEM was dramatically different from their behavior in RMA soldering flux; a smaller wetting angle and rough wetting front morphology were observed. Very surprisingly, no dewetting could be observed inside the SEM chamber, yet dewetting happened to the same sample when it was removed from the SEM and immersed in RMA soldering flux. We estimate the interfacial energy between liquid Sn and solid Cr and assume the reduction of surface and interfacial energies caused by possible oxidation of Cr and liquid Sn surface in the SEM in order to explain the above-mentioned wetting and dewetting behaviors.

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Roegler, Hans-Joachim, e Gunter Wierheim. "Le réacteur de recherche FRM-II à Munich : une nouvelle source de neutrons à haut flux". Revue Générale Nucléaire, n. 3 (maggio 2002): 63–68. http://dx.doi.org/10.1051/rgn/20023063.

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Roegler, Hans-Joachim, e Gunter Wierheim. "Le réacteur de recherche FRM-II à Munich : une nouvelle source de neutrons à haut flux". Revue Générale Nucléaire, n. 4 (agosto 2002): 76–85. http://dx.doi.org/10.1051/rgn/20024076.

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Sheng, Yang Yang, Yan Fu Yan, Kuai Le Zhao e Zhi Wei Xu. "Effects of Different Fluxes on the Spreadability of Zn-20Sn Solders". Advanced Materials Research 337 (settembre 2011): 546–49. http://dx.doi.org/10.4028/www.scientific.net/amr.337.546.

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The spreadability of Zn-20Sn solders on Cu substrate was researched by using self-made flux, silver brazing 102 and medium activity rosin (RMA), and the characteristics of intermetallic compounds the appearance of solder joints were compared and analyzed at soldering joints. Results indicated that Zn-20Sn solders exhibited excellent spreadability by using self-made flux. A shoot IMC layer was closed to the solder while a flat IMC layer was presenting adjacent to the Cu substrate and the middle layer. Moreover, the characteristics of IMC and the appearances of soldered joints varied by using different fluxes.

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Okada, Nobuchika, e Osamu Seto. "DAMPE excess from decaying right-handed neutrino dark matter". Modern Physics Letters A 33, n. 27 (2 settembre 2018): 1850157. http://dx.doi.org/10.1142/s0217732318501572.

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The flux of high-energy cosmic-ray electrons plus positrons recently measured by the DArk Matter Particle Explorer (DAMPE) exhibits a tentative peak excess at an energy of around 1.4 TeV. In this paper, we consider the minimal gauged U(1)[Formula: see text] model with a right-handed neutrino (RHN) dark matter (DM) and interpret the DAMPE peak with a late-time decay of the RHN DM into [Formula: see text]. We find that a DM lifetime [Formula: see text] can fit the DAMPE peak with a DM mass [Formula: see text]. This favored lifetime is close to the current bound on it by Fermi-LAT, our decaying RHN DM can be tested, once the measurement of cosmic gamma ray flux is improved. The RHN DM communicates with the Standard Model particles through the U(1)[Formula: see text] gauge boson ([Formula: see text] boson), and its thermal relic abundance is controlled by only three free parameters: [Formula: see text], the U(1)[Formula: see text] gauge coupling [Formula: see text], and the [Formula: see text] boson mass [Formula: see text]. For [Formula: see text], the rest of the parameters are restricted to be [Formula: see text] and [Formula: see text], in order to reproduce the observed DM relic density and to avoid the Landau pole for running [Formula: see text] below the Planck scale. This allowed region will be tested by the search for a [Formula: see text] boson resonance at the future Large Hadron Collider.

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Molina, Jennifer R., Joseph M. Gozgit, Melissa M. Vasbinder, Ryan P. Abo, Kaiko kunii, Kristy G. Kuplast-Barr, Bin Gui et al. "Abstract 2154: PARP7 inhibitor RBN-2397 increases tumoral IFN signaling leading to various tumor cell intrinsic effects and tumor regressions in mouse models". Cancer Research 82, n. 12_Supplement (15 giugno 2022): 2154. http://dx.doi.org/10.1158/1538-7445.am2022-2154.

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Abstract Targeting cytosolic nucleic acid sensing pathways to activate the Type I interferon (IFN) response is an emerging therapeutic strategy being explored in oncology. The PARP family consists of seventeen enzymes that regulate fundamental biological processes including response to cellular stress. PARP7 (TIPARP) is a stress-induced mono-ART that catalyzes the transfer of a single unit of ADP-ribose onto substrates (MARylation) to regulate their function and plays a role in suppressing the Type I IFN response in tumor cells (Gozgit 2021 Cancer Cell). RBN-2397 is the first potent and selective small molecule inhibitor of PARP7 catalytic function. To investigate the cell autonomous effects of PARP7 inhibition, we performed a cell line screen to identify PARP7 dependent cancer cell lines. We found that treatment of a subset of lines across several cancers led to a robust decrease in cell viability. Additionally, dosing of tumor bearing mice led to complete regressions in NCI-H1373 lung cancer xenografts. To investigate the mechanism of action (MOA) leading to decreased cell viability, we treated NCI-H1373 cells with RBN-2397 and found accumulation of cells in the G0/G1 phase of the cell cycle indicative of a cell cycle arrest. This arrest in NCI-H1373 cells was associated with the induction of senescence and increased mRNA expression of senescence associated secretory phenotype (SASP) genes. To evaluate the in vivo MOA, we performed an NCI-H1373 xenograft study and collected tumors after 7 days of RBN-2397 treatment. PARP7 inhibition led to decreased expression of Ki67, and increased expression of P21 and cleaved caspase-3, suggesting decreased proliferation and increased apoptosis. Increased expression of SASP genes was also observed in RBN-2397 treated tumors. Finally, we investigated transcriptional changes after RBN-2397 treatment by RNA sequencing. In addition to the effects observed in Type I IFN signaling, we also observed differential expression of genes associated with other pathways including autophagy and energy metabolism. Further evaluation of key autophagy proteins revealed that RBN-2397 affects autophagy flux and leads to a decrease in the oxygen consumption rate of cells and reduced ATP production from the mitochondria, suggesting that a change in energy metabolism may be related to the tumor intrinsic effect of RBN-2397. In summary, we show treatment of cancer cells with RBN-2397 not only leads to activation of tumor cell IFN signaling, but also causes G1 arrest and senescence, and changes in cancer cell autophagy and energy metabolism. In vivo, RBN-2397 treatment leads to complete tumor regressions in xenografts accompanied by decreased proliferation and increased apoptosis of tumor cells. RBN-2397 is currently being evaluated in the clinic as single agent in selected cancer types (NCT04053673) and in combination with anti-PD-1 therapies. Citation Format: Jennifer R. Molina, Joseph M. Gozgit, Melissa M. Vasbinder, Ryan P. Abo, Kaiko kunii, Kristy G. Kuplast-Barr, Bin Gui, Sunaina P. Nayak, Elena Minissale, Kerren K. Swinger, Tim J. Wigle, Alvin Z. Lu, Danielle J. Blackwell, Christina R. Majer, Yue Ren, Ellen Bamberg, Mario Niepel, Jan-Rung Mo, William D. Church, Ahmed S. Mady, Jeff Song, Zacharenia A. Varsamis, Luke Utley, Patricia E. Rao, Timoty J. Mitchison, Kevin W. Kuntz, Victoria M. Richon, Kristen McEachern, Heike Keilhack. PARP7 inhibitor RBN-2397 increases tumoral IFN signaling leading to various tumor cell intrinsic effects and tumor regressions in mouse models [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 2154.

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Roulet, Éric. "Le départ des huguenots vers les Antilles françaises au XVII e siècle : les raisons du voyage". Revue du Nord 449, n. 2 (10 ottobre 2024): 43–62. http://dx.doi.org/10.3917/rdn.449.0043.

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Alors que la France entreprend la conquête des îles de l’Amérique, Saint-Christophe d’abord en 1625, puis la Guadeloupe et la Martinique en 1635, les sujets du roi très chrétien sont incités à venir peupler les nouveaux établissements fondés. Après des débuts modestes, un flux migratoire soutenu s’observe dès les années 1640. Parmi les premiers arrivants, il y a de nombreux protestants. Quelles sont les raisons de leur départ ? Suivent-elles les mêmes ressorts que l’émigration des catholiques ou envisagent-ils les Antilles comme un refuge ? Quelle part a eu l’évolution de la situation religieuse en France ? La lecture des récits des missionnaires, des recensements et des certificats d’abjuration, permet de mieux cerner ce monde protestant discret et néanmoins bien présent.

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Freire, Carla Regina Ferreira, e Paulo Fernando Cidade De Araújo. "MIGRAÇÃO, PRODUÇÃO E SALÁRIOS NO MEIO RURAL DA REGIÃO NORDESTE DO BRASIL". Revista Econômica do Nordeste 33, n. 4 (27 dicembre 2002): 670–93. http://dx.doi.org/10.61673/ren.2002.1829.

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Analisa o fluxo migratório, evolução da produção e da produtividade e fatores relevantes para estimação da taxa de salário. Com relação ao fluxo migratório, constata que o Nordeste apresenta um grande fluxo, em busca de melhores serviços, maiores salários e, principalmente, melhor nível de vida, principalmente para o Sudeste e Centro-Oeste. Analisando a migração rural-urbana, o meio rural perdeu população no período 1970-1991. Na análise da evolução da produção e da produtividade, considerou-se o crescimento da produção em função da produtividade da terra, área cultivada e emprego. De 1975-1985, a produção nordestina elevou-se em função do aumento da área cultivada e da maior produtividade da terra. No período de 1985-1995, visualiza-se redução da produção agrícola em todos os Estados e região, principalmente pela ocorrência de secas. No entanto, a análise dos 20 anos mostra que a produção agrícola da região Nordeste registrou pequeno crescimento. São considerados fatores relevantes: força de trabalho, escolaridade e capital por trabalhador. A base de dados é constituída pelas atuais 177 microrregiões do Nordeste. Constata uma pequena variação negativa (-0,09%) no salário rural com o aumento de 1% na força de trabalho. As variáveis escolaridade e capital por trabalhador revelam influência positiva sobre a taxa...

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Xie, Y. H., T. Zhu, C. H. Xu, T. Nozaki e K. Furukawa. "Treatment of domestic sewage by a metal membrane bioreactor". Water Science and Technology 65, n. 6 (1 marzo 2012): 1102–8. http://dx.doi.org/10.2166/wst.2012.422.

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A submerged flat metal MBR (membrane bioreactor) was used to treat synthetic domestic sewage in this study. The experiment was continued for 270 days and ran under two modes as AMBR (aerobic membrane bioreactor) and A/O-MBR (anoxic/aerobic membrane bioreactor) at a permeate flux of 0.4–1 m3/(m2 d). PVA (polyvinyl alcohol) gel beads were added to the aeration tank with a volume ratio of 10% at the end of the A/O-MBR mode. The mean COD and TN removal efficiencies achieved 96.69 and 32.12% under the AMBR mode, and those were 92.17 and 72.44% under the A/O-MBR mode, respectively. SND (simultaneous nitrification and denitrification) occurred at high MLSS (mixed liquor suspended solids) concentration. The metal membranes reduced effluent COD during filtration. The system ran stably for 115 days at a permeate flux of 0.8–1 m3/(m2 d) without changing membranes under the AMBR mode, but the membrane filterability decreased gradually under high MLSS or A/O-MBR mode, and the addition of PVA worsened the membrane filterability on the contrary. PSD (particle size distribution) and sludge fractions had evident influence on membrane fouling. The main fouling mechanism was cake formation under the AMBR mode, and that was pore blocking under the A/O-MBR mode.

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Borghini, A. "Comprendre le bébé dans tous les sens : l’importance des flux sensoriels pour soutenir la régulation émotionnelle". Périnatalité 13, n. 2 (giugno 2021): 90–95. http://dx.doi.org/10.3166/rmp-2021-0119.

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Dès le début de la vie, le fœtus, puis le nourrisson, est exposé aux flux sensoriels. Son organisme, à travers les récepteurs sensoriels, est construit pour pouvoir les traiter et utiliser ce traitement pour développer les capacités perceptives organisant ainsi son développement sensorimoteur. Mais, pour certains enfants, des irritabilités sensorielles peuvent entraver ou limiter ce processus. L’enfant peut avoir de la peine à développer sa propre conscience corporelle ainsi que tous les processus d’agentivité incarnée qui y sont liés. Pour ces enfants, c’est l’ajustement du milieu humain qui va les aider à développer leurs capacités de régulation tonicoémotionnelle en soutenant leurs propres efforts pour atteindre l’apaisement. Le repérage précoce de ces difficultés devrait être central pour accompagner les familles concernées au cours des premiers mois de vie de l’enfant.

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Dobrzynski, Cécile, Pascal Frey e Olivier Pironneau. "Couplage et adaptation de maillage anisotrope pour des simulations de flux d’air dans des géométries complexes". European Journal of Computational Mechanics 16, n. 6-7 (gennaio 2007): 749–73. http://dx.doi.org/10.3166/remn.16.749-773.

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Luiz Alfredo, Raposo. "O VALOR DA EMPRESA NA PERSPECTIVA DA OFERTA (EM TORNO DA NOÇÃO DE PREÇO MÍNIMO)." Revista Econômica do Nordeste 25, n. 2 (30 aprile 1994): 223–59. http://dx.doi.org/10.61673/ren.1994.2194.

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Este trabalho baseia-se em estudos anteriores do autor e de Fernanda Pontual. Adota, para determinar o valor de uma empresa, o ponto de vista da oferta, ou seja, de um empresário buscando determinar qual o preço mínimo a pedir por sua empresa. Reflete, portanto, a visão de um lado apenas, mas a forma de analisar proposta pode servir de inspiração para aná- lises sob o prisma do comprador. Inicialmente, os conceitos de valor patrimonial (valor estático) e de valor atual do fluxo de caixa (valor dinâmico) são submetidos a cuidadoso exame; retoma a questão da otimização, para a qual tenta desenvolver um esquema conceitual mais detalhado. São abordados, ainda, pontos como a escolha da taxa de desconto a ser utilizada e aspectos importantes da noção de fluxo de caixa.

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Morenzoni, Franco. "Les articles additionnels aux statuts de 1403 d’Amédée VIII de Savoie conservés par le manuscrit Paris, BnF, lat. 12868". Revue du Nord 446, n. 2 (14 marzo 2023): 303–14. http://dx.doi.org/10.3917/rdn.1446.0303.

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Le manuscrit de la BnF, lat. 12868 a conservé les plus anciennes copies connues des Statuts promulgués par le comte puis duc de Savoie Amédée VIII en 1403 et 1423. À la suite des 119 articles des statuts de 1403, le manuscrit a transmis vingt-deux articles additionnels qui traitent de l’organisation et du personnel de l’hôtel du comte, notamment du maître d’hôtel, de la Chambre des comptes et du trésorier général, ainsi que de quelques questions monétaires ou relatives à la Chartreuse de Pierre-Châtel. Presque tous les articles révèlent la volonté de l’entourage du comte et de ses juristes de réorganiser et de renforcer le rôle de l’administration centrale, par exemple en confiant au trésorier général la responsabilité de gérer, à tout le moins en théorie, l’ensemble des flux financiers. Le texte latin des vingt-deux articles a été édité.

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Tchuen, Ghislain, Pascalin Tiam Kapen e Yves Burtschell. "An accurate shock-capturing scheme based on rotated-hybrid Riemann solver". International Journal of Numerical Methods for Heat & Fluid Flow 26, n. 5 (6 giugno 2016): 1310–27. http://dx.doi.org/10.1108/hff-01-2015-0031.

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Purpose – The purpose of this paper is to present a new hybrid Euler flux fonction for use in a finite-volume Euler/Navier-Stokes code and adapted to compressible flow problems. Design/methodology/approach – The proposed scheme, called AUFSRR can be devised by combining the AUFS solver and the Roe solver, based on a rotated Riemann solver approach (Sun and Takayama, 2003; Ren, 2003). The upwind direction is determined by the velocity-difference vector and idea is to apply the AUFS solver in the direction normal to shocks to suppress carbuncle and the Roe solver across shear layers to avoid an excessive amount of dissipation. The resulting flux functions can be implemented in a very simple manner, in the form of the Roe solver with modified wave speeds, so that converting an existing AUFS flux code into the new fluxes is an extremely simple task. Findings – The proposed flux functions require about 18 per cent more CPU time than the Roe flux. Accuracy, efficiency and other essential features of AUFSRR scheme are evaluated by analyzing shock propagation behaviours for both the steady and unsteady compressible flows. This is demonstrated by several test cases (1D and 2D) with standard finite-volume Euler code, by comparing results with existing methods. Practical implications – The hybrid Euler flux function is used in a finite-volume Euler/Navier-Stokes code and adapted to compressible flow problems. Originality/value – The AUFSRR scheme is devised by combining the AUFS solver and the Roe solver, based on a rotated Riemann solver approach.

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28

Costa, Cinthia Cabral da, Heloisa Lee Burnquist, Maurício Jorge Pinto de Souza e Constanza Valdes. "MODELAGEM DA DEMANDA DE COMBUSTÍVEL NO BRASIL: A IMPORTÂNCIA DOS VEÍCULOS FLEX". Revista Econômica do Nordeste 48, n. 3 (21 dicembre 2017): 113–27. http://dx.doi.org/10.61673/ren.2017.164.

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O objetivo deste estudo foi avaliar os efeitos da expansão dos veículos flex na frota de veículos leves no Brasil sobre a demanda dos diferentes tipos de combustíveis utilizados na mesma: etanol hidratado e gasolina. O estudo inclui uma análise crítica das estimativas anteriores de demanda de combustíveis no Brasil de modo a explicar a importância da presente estimativa, incluindo os dados mais recentes possíveis. Os resultados indicam que a demanda por etanol hidratado é elástica em relação aos preços, tanto do próprio combustível quanto preço cruzado da gasolina; que a demanda preço da gasolina é inelástica a ambos os preços e; que a renda tem um efeito positivo e significativo sobre a demanda de gasolina, mas tem efeito negativo sobre a demanda de etanol hidratado. Estes resultados podem orientar a formulação de políticas para impulsionar o consumo de biocombustíveis no Brasil, considerando que, nos últimos anos, o mercado de etanol hidratado tem se mantido estagnado devido a distorções introduzidas pelas políticas do governo brasileiro.

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Paché, Gilles. "Logistique urbaine durable : des choix de distribution contraints par le politique". Revue Management & Innovation N° 4, n. 2 (8 novembre 2021): 157–68. http://dx.doi.org/10.3917/rmi.204.0157.

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Alors même que les hypermarchés et les grands centres commerciaux, localisés en périphérie des villes, constituaient des formats de vente dominants de la période des Trente Glorieuses, le commerce de proximité et le e-commerce ont pris un fort ascendant qui pose de redoutables problèmes logistiques. Ces deux formats de vente s’appuient sur la multiplication de livraisons urbaines selon un modèle de capillarité extrême des flux. Il en résulte des perturbations environnementales majeures, compte tenu de la multiplication des véhicules de livraison. Un nombre de plus en plus important de décideurs politiques locaux souhaitent développer une ville durable, et pour cela, ils mettent en œuvre de nouveaux schémas logistiques fondés sur la coercition, notamment avec la création de zones à faible émission (ZFE). L’interventionnisme politique impacte fortement le fonctionnement des canaux de distribution de masse, et il doit être impérativement pris en compte par les entreprises au risque de bloquer le développement de nouveaux formats de vente.

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30

Marinucci, A., S. Bianchi, V. Braito, B. De Marco, G. Matt, R. Middei, E. Nardini e J. N. Reeves. "The lively accretion disc in NGC 2992 – I. Transient iron K emission lines in the high-flux state". Monthly Notices of the Royal Astronomical Society 496, n. 3 (13 giugno 2020): 3412–23. http://dx.doi.org/10.1093/mnras/staa1683.

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ABSTRACT We report on one of the brightest flux levels of the Seyfert 2 galaxy NGC 2992 ever observed in X-rays, on 2019 May. The source has been monitored every few days from 2019 March 26 to 2019 December 14 by Swift-X-Ray Telescope (XRT), and simultaneous XMM–Newton (250 ks) and NuSTAR (120 ks) observations were triggered on 2019 May 6. The high count rate of the source (its 2–10 keV flux ranged between 0.7 and 1.0 × 10−10 erg cm−2 s−1) allows us to perform a time-resolved spectroscopy, probing spatial scales of tens of gravitational radii from the central black hole. By constructing a map of the excess emission over the primary continuum, we find several emission structures in the 5.0–7.2 keV energy band. From fitting the 50 European Photon Imaging Camera (EPIC)-pn spectral slices of ∼5 ks duration, we interpret them as a constant narrow iron Kα line and three variable components in the iron K complex. When a self-consistent model accounting for the accretion disc emission is considered (KYNrline), two of these features (in the 5.0–5.8 and 6.8–7.2 keV bands) can be ascribed to a flaring region of the accretion disc located at rin ≃ 15–40rg from the black hole. The third one (6.5–6.8 keV) is likely produced at much larger radii (rin > 50rg). The inner radius and the azimuthal extension retrieved from the co-added spectra of the flaring states are rin = 15 ± 3rg and ϕ = 165°–330°, suggesting that the emitting region responsible for the broad iron K component is a relatively compact annular sector within the disc. Our findings support a physical scenario in which the accretion disc in NGC 2992 becomes more active at high accretion rates ($L_{\rm bol}/L_{\rm Edd}\ge 4$ per cent).

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31

Lena, Lavinas, Garcia Henrique Eduardo e Rubens do Amaral Marcelo. "DESIGUALDADES REGIONAIS: INDICADORES SÓCIO-ECONÓMICOS NOS ANOS 90". Revista Econômica do Nordeste 27, n. 4 (30 ottobre 1996): 857–921. http://dx.doi.org/10.61673/ren.1996.2133.

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Analisa os indicadores econômicos das regiões brasileiras, enfocando as desigualdades entre elas. Com a globalização da economia, existe a possibilidade de essas disparidades se agravarem, tanto social como economicamente, fato esse que gera apreensão nas áreas menos desenvolvidas, que podem ficar de fora do fluxo internacional de comércio.

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32

Rodriguez Leite, Ana Paula Moreira, Thauan Santos e Cintiene Sandes Monfredo Mendes. "Políticas migratórias na UE: entre a estratégia do poder soberano e a cooperação compartilhada | Migration policies in the EU: between the sovereign power strategy and shared cooperation". Mural Internacional 8, n. 1 (1 giugno 2018): 106–19. http://dx.doi.org/10.12957/rmi.2017.32577.

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As políticas migratórias da UE são caracterizadas como estratégicas, nas quais os interesses securitários da Comunidade são priorizados. A lógica de tais políticas consiste na regulação a partir das fronteiras sob dois mecanismos dispostos em normativas comunitárias: o Acordo de Schengen e o Tratado de Amsterdã. No decorrer da Primavera Árabe, em especial, o fluxo de refugiados somou-se ao de imigrantes irregulares, denunciando as lacunas existentes na gestão das fronteiras europeias em termos estratégicos e também humanitários. O aporte metodológico utilizado da análise comparada nos permite identificar as distorções entre documento e prática no que se refere ao Tratado de Amsterdã e o Acordo de Schengen na gestão de fronteiras. Nossa hipótese é de que o aumento do fluxo de refugiados geraria uma crise institucional na qual o poder soberano se sobreporia ao poder supranacional.Abstract: EU migration policies are characterized as strategic, in which the securitization interests of the Community are prioritized. The logic of such policies is to regulate from the borders under two mechanisms set out in Community legislation: the Schengen Agreement and the Treaty of Amsterdam. During the Arab Spring, in particular, the influx of refugees added to irregular migrants, stressing the shortcomings in the management of European borders in strategic and humanitarian terms. The methodological approach used in the comparative analysis allows us to identify the distortions between document and practice regarding the Treaty of Amsterdam and the Schengen Agreement on border management. Our hypothesis is that increasing the flow of refugees would create an institutional crisis in which sovereign power would replace supranational power.Palavras-chave: União Europeia, fluxo de refugiados, gestão de fronteiras.Keywords: European Union, Refugee flows, border management. Recebido em 30 de Janeiro de 2018 | Aceito em 05 de Maio de 2018.Received on January 30, 2018 | Accepted on May 5, 2018.

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Belmonte, Manuel, Pilar Miranzo e María Isabel Osendi. "Processing and Properties of Highly Textured Si₃N₄ Materials". Key Engineering Materials 336-338 (aprile 2007): 1175–78. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1175.

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Textured Si3N4 materials have been fabricated by extruding ceramic pastes, containing β-Si3N4 seeds, and later densification by hot-pressing. A strong anisotropy in the microstructure of the specimens was observed, which drastically influenced their properties. The thermomechanical and tribological behavior of the textured materials were investigated. The surface perpendicular to the Si3N4 grain alignment presented higher wear resistance than the parallel one. The thermal conductivity of the material increased when the heat flux ran along the elongated Si3N4 grains.

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34

Batista, Luciene Maria Torquato Cerqueira, e Marcelo Inácio Ferreira Ferraz. "ÍNDICE DE ATIVIDADE ECONÔMICA DE ILHÉUS E ITABUNA". Revista Econômica do Nordeste 52, n. 1 (11 giugno 2021): 107–23. http://dx.doi.org/10.61673/ren.2021.1183.

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A presente pesquisa teve como objetivo elaborar um índice de curto prazo voltado para as atividades econômicas dos municípios de Ilhéus e Itabuna, a fim de fornecer informações ágeis para que agentes econômicos consigam melhor agir dentro da dinâmica econômica local, uma vez que a todo o momento esses interferem e se movimentam no fluxo de mercado. A proposta do trabalho consistiu em agregar variáveis relacionadas a esses dois municípios, tendo como base metodológica o Indicador da Atividade Econômica de Ribeiro (2003), o qual possibilita o monitoramento do fluxo de pessoas e cargas com eficácia e celeridade. Através da análise de séries temporais feita pelo programa X-13 ARIMA e do método da componente principal foi desenvolvido o Índice de Atividade Econômica de Ilhéus e Itabuna (Índice IOS-ITA), o qual apontou, pela estimativa dos dados referentes ao período 2014 a 2018, que as variáveis: “Aeroporto”, “Porto” e “Saldo de Emprego” são as que mais explicaram as atividade econômicas desses municípios nos meses desse período. Por fim, foi provado através de testes de correlação que o Índice IOS-ITA é positivamente e significativamente relacionado a outros indicadores tradicionais e conceituados da economia nacional.

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35

Li, Fengjie, Shimei Zheng e Bingchen Liu. "Blow-up of multi-componential solutions in heat equations with exponential boundary flux". Rocky Mountain Journal of Mathematics 47, n. 7 (novembre 2017): 2295–321. http://dx.doi.org/10.1216/rmj-2017-47-7-2295.

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36

Li, Fengjie, Shimei Zheng e Bingchen Liu. "Blow-up of multi-componential solutions in heat equations with exponential boundary flux". Rocky Mountain Journal of Mathematics 47, n. 7 (novembre 2017): 2309–35. http://dx.doi.org/10.1216/rmj-2017-47-7-2309.

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37

Rave-Bonilla, Yuly Paola, David E. Jessop, Séverine Moune, Céline Garbin e Roberto Moretti. "Numerical modelling of the volcanic plume dispersion from the hydrothermal system of La Soufrière de Guadeloupe". Volcanica 6, n. 2 (28 novembre 2023): 459–77. http://dx.doi.org/10.30909/vol.06.02.459477.

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Abstract (sommario):

Passive volcanic degassing results in the emission of toxic gases such as H2S at quasi-steady rates over long periods of time that pose a significant hazard to human health even in low gas concentrations. Currently, La Soufrière de Guadeloupe has one of the highest gas emission rates in the Lesser Antilles arc, with gas emitted mainly from low-temperature fumaroles. In this study, gas dispersion from the volcano between 2016–2021 was modelled using a numerical code that takes into account wind and atmospheric data, topography and gas flux measurements. We ran c.100 individual simulations of the most frequently observed wind and gas flux conditions using a Monte-Carlo scheme. Our results, validated using air-quality measurements and citizen-science surveys, show that the most exposed zones are the hamlet of Matouba and the upper St. Claude. These areas have 20% and 5% probability, respectively, of exceeding H2S guidelines for long-term gas exposure (70 ppb).

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38

Xiang, Zhaoyin, Chunlai Mu e Yulan Wang. "Critical Curve of the Non-Newtonian Polytropic Filtration Equations Coupled via Nonlinear Boundary Flux". Rocky Mountain Journal of Mathematics 39, n. 2 (aprile 2009): 689–705. http://dx.doi.org/10.1216/rmj-2009-39-2-689.

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39

Yuldasheva, Z. K., e A. A. Ismatullaeva. "THE INFLUENCE OF SOWING NORMS ON THE FORMATION OF YIELD ELEMENTS OF NEW VARIETIES OF OILY FLAX". American Journal Of Agriculture And Horticulture Innovations 4, n. 6 (1 giugno 2024): 18–22. http://dx.doi.org/10.37547/ajahi/volume04issue06-04.

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In this article, the effect of different sowing normson the yield elements of new varieties of repeated planted oilseed flax has been proven. In the experiment, 4-5-6 million seeds of Bahorikor (st), Russian Fliz, Danik, Biryuza, RFN varieties were used, and the effect on crop elements was studied. According to the sowing norms, it was proved that the elements of oilseed crop and the weight of 1000 seeds were high in the option where 4 million seeds were used, and when 5 and 6 million seeds were used, the yield elements of oilseed was higher, and the weight of 1,000 seeds were proven to be behind the option that used 4 million seeds. It has been proven that the Russian Fliz (st) variety, which gave good results on the same level as the Bahorikor (st) variety, was well adapted to the climatic conditions of Uzbekistan and prevailed over other varieties.

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40

Namdari, Sajad, Alireza Baghbanan e Hamid Hashemolhosseini. "INVESTIGATION OF THE EFFECT OF THE DISCONTINUITY DIRECTION ON FLUID FLOW IN POROUS ROCK MASSES ON A LARGE-SCALE USING HYBRID FVM-DFN AND STREAMLINE SIMULATION". Rudarsko-geološko-naftni zbornik 36, n. 4 (2021): 49–59. http://dx.doi.org/10.17794/rgn.2021.4.5.

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Understanding the fluid behaviour in rock masses is of great importance in various rock mass-related engineering projects, such as seepage in tunnels, geothermal reservoirs, and hazardous waste disposal. Different approaches have been implemented to study the flow pattern in fractured porous rock masses. Laboratory experiments can provide good information regarding this issue, but high expenses aside, they are time-consuming and suffer the lack of ability to study field scale mediums. Numerical methods are beneficial in simulating such mediums with the Discrete Fracture Network (DFN) method in terms of costs and time as they offer sufficient flexibility and creativity. In this paper, a Matlab code was extended to study the flow regime in a Dual Permeability Media (DPM) with two point sources in the right and left side of the model as an injector and a producer well, respectively. A high permeability discontinuity with different angles was embedded in a very low-permeability limestone matrix. Pressure equations were solved implicitly with a two-point flux approximation scheme of the Finite Volume Method (FVM). Streamlines were traced in the medium and used to analyse the model’s hydraulic behaviour with the aid of Time Of Flight (TOF) for each point. The results show that the FVM-DFN hybrid method can be used as a fast method for fluid flow in DPM with the aid of streamline simulation to study the fluid flow in a large model with discontinuity.

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41

Smits, A. W., N. H. West e W. W. Burggren. "Pulmonary fluid balance following pulmocutaneous baroreceptor denervation in the toad". Journal of Applied Physiology 61, n. 1 (1 luglio 1986): 331–37. http://dx.doi.org/10.1152/jappl.1986.61.1.331.

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Pulmonary hemodynamics and net transcapillary fluid flux (NTFF) were measured in conscious toads before and following bilateral denervation of the recurrent laryngeal nerves (rLN), which contain afferents from baroreceptors located in the pulmocutaneous arteries. Denervation caused an acute doubling of the arterial-venous pressure gradient across the lung and a threefold increase in pulmonary blood flow. Calculated pulmonary vascular resistance fell and remained below control values through the period of experimentation. NTFF increased by an order of magnitude (0.74–7.77 ml X kg-1 X min-1), as filtration increased in response to the hemodynamic changes caused by rLN denervation. There was a better correlation between NTFF and pulmonary blood flow than between NTFF and pulmonary driving pressure. Our results support the view that tonic neural input from pulmocutaneous baroreceptors protects the anuran lung from edema by restraining pulmonary driving pressure and blood flow and perhaps by reflexly maintaining vascular tone in the extrinsic pulmonary artery, therefore tending to increase the pre-to-postpulmonary capillary resistance ratio and biasing the Starling relationship in the pulmonary capillaries against filtration.

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42

Horimek, Abderrahmane. "Non-Newtonian natural convection cooling of a heat source of variable length and position placed at the bottom of a square cavity". Thermal Science, n. 00 (2023): 59. http://dx.doi.org/10.2298/tsci220531059h.

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Abstract (sommario):

Natural convection cooling of a heat source placed at the bottom wall of a square cavity filled with non-Newtonian fluid was investigated numerically. Two thermal conditions were assumed at the source (imposed temperature or flux density). The effects of Rayleigh number (Ran), rheological index (n), source length (SL), its position (D), and Prandtl number (Prn) were analyzed. For a centered source. The three first parameters were varied. The results show an increase in dynamic and thermal fields? perturbations when Ran increases and/or SL increases and/or n decreases. These observations are clearer in the first heating type compared to the second. Mean Nusselt number increase is recorded when Ran increases and/or n decreases, while it decreases with SL increase until SL=1.0 where a new increase is recorded. For a non-centered source, the previous observations still valid, noting the loss of symmetry. The highest mean rate of heat exchange is recorded when D=0.0 with decreasing amounts when moving towards the center. Finally, Prn effect is analyzed. Results show a better diffusion of heat when Prn increases for low n. Consequently, a marked increase in the mean Nusselt number for n<1.0, weak for n=1.0 and almost absent for n>1.0 are recorded with a clearer effect for the first type of heating.

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Pfister-Langanay, Christian. "Arnaud Knaepen , Christophe Loir , Alexis Wilkin (éd.), Approvisionner la ville. Flux alimentaires et circulations urbaines du Moyen Âge au xix e siècle , Bruxelles, Éditions de l’Université de Bruxelles, 2018, 208 p." Revue du Nord 438, n. 1 (27 maggio 2021): V. http://dx.doi.org/10.3917/rdn.438.0139e.

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44

Ma, Nan, U. S. Tulu, Nick P. Ferenz, Carey Fagerstrom, Andrew Wilde e Patricia Wadsworth. "Poleward Transport of TPX2 in the Mammalian Mitotic Spindle Requires Dynein, Eg5, and Microtubule Flux". Molecular Biology of the Cell 21, n. 6 (15 marzo 2010): 979–88. http://dx.doi.org/10.1091/mbc.e09-07-0601.

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TPX2 is a Ran-regulated spindle assembly factor that is required for kinetochore fiber formation and activation of the mitotic kinase Aurora A. TPX2 is enriched near spindle poles and is required near kinetochores, suggesting that it undergoes dynamic relocalization throughout mitosis. Using photoactivation, we measured the movement of PA-GFP-TPX2 in the mitotic spindle. TPX2 moves poleward in the half-spindle and is static in the interzone and near spindle poles. Poleward transport of TPX2 is sensitive to inhibition of dynein or Eg5 and to suppression of microtubule flux with nocodazole or antibodies to Kif2a. Poleward transport requires the C terminus of TPX2, a domain that interacts with Eg5. Overexpression of TPX2 lacking this domain induced excessive microtubule formation near kinetochores, defects in spindle assembly and blocked mitotic progression. Our data support a model in which poleward transport of TPX2 down-regulates its microtubule nucleating activity near kinetochores and links microtubules generated at kinetochores to dynein for incorporation into the spindle.

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45

Santos, Rubens Souza. "On the starting and operational transients at the core of the RMB based on 2D multigroup diffusion". Brazilian Journal of Radiation Sciences 10, n. 3B (Suppl.) (31 luglio 2023): 01–27. http://dx.doi.org/10.15392/2319-0612.2022.1993.

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Abstract (sommario):

RMB is a multipurpose reactor to be built by CNEN. As a multipurpose facility, unlike a nuclear power plant, some operations may result in transients, whether during the movement of materials from remote irradiation, extraction of neutrons through beam holes, reactor starting up, control rod accident, etc. For that, a methodology to visualize some variables like neutron fluxes, temperatures, power, etc., was developed. In this one present some preliminary results based on multigroup diffusion theory, thermal hydraulics feedbacks, and numerical methods, systematized in the DINUCLE code. DINUCLE couples a numerical code of multigroup spatial kinetics, for calculations of the flux of neutrons in the core of reactors, with a numerical code for the analysis of thermo hydraulic transients in rods and plates, considering the refrigerant always single-phase. Use was made of a programming in VBA (Visual Basic for Applications) from Excel, for data visualization in the transient.

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46

Kolotov, A. P., e N. A. Kiprushkina. "Evaluation of productivity of oil flax varieties in the conditions of the Sverdlovsk region". Oil Crops 1, n. 189 (25 maggio 2022): 54–61. http://dx.doi.org/10.25230/2412-608x-2022-1-189-54-61.

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Abstract (sommario):

Oil flax was grown on gray forest soils of the Sverdlovsk region. The purpose of the research was to compare the yield of new varieties of oil flax, to justify the yield value by elements of the yield structure and to determine the seed quality by biochemical composition. The research method was a field experiment with variance analysis of experimental data. We established that in the Sverdlovsk region, even in extreme meteorological conditions, it is possible to obtain the oil flax yield of 1.8–2.2 t/ha. In the ecological trial, the varieties Uralsky, VNIIMK 620 FN, RFN, Fliz, Rachel and Lirina were distinguished by early maturity, in which the growing season was 82 days, which is 10 days shorter than late-maturing varieties. According to the seed yield in the conditions of 2021, the varieties Lirina (2.04 t/ha), Uralsky (1.88 t/ha), VNIIMK 620 FN (1.71 t/ha), Fliz (1.64 t/ha) and Rachel (1.73 t/ha) were distinguished. With small differences between varieties in plant density, the yield value was determined by the optimal combination of the main elements of its structure – the number of pods per 1 plant, seeds in a pod and the thousand-seed weight. The highest yield in the competitive trial was formed by the variety Uralsky yellow (2.28 t/ha). By thousand-seed weight, it is inferior to the variety Northern (standard with brown seeds), but exceeds the similar variety LM 98 with yellow seeds by 1.32 g. In the warm and arid conditions of 2021, flax seeds were characterized by increased oil content. By this trait, the varieties August (48.6%), RFN (46.9%) and Azurite (46.6%) were distinguished.

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47

Zhu, T., Y. H. Xie, J. Jiang, Y. T. Wang, H. J. Zhang e T. Nozaki. "Comparative study of polyvinylidene fluoride and PES flat membranes in submerged MBRs to treat domestic wastewater". Water Science and Technology 59, n. 3 (1 febbraio 2009): 399–405. http://dx.doi.org/10.2166/wst.2009.849.

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Abstract (sommario):

Two kinds of membranes, polyvinylidene fluoride (PVDF) and polyethersulfone (PES), were used in submerged flat membrane bioreactors (MBRs) to treat domestic wastewater in this study. The MBRs ran under the same reactor structure, the same membrane pore size of 0.45 μm and the same anoxic/ oxic (A/O) process. The experimental results showed that: (1) With the influent of BOD5 200–500 mg/L and CODCr 400–1,000 mg/L, PVDF MBR achieved the removal efficiencies of BOD5 96–98% and CODCr 89–98%, and those were 97–99% and 93–97% in PES MBR. The interceptive efficiency of PES membrane to BOD5 and CODCr was superior to PVDF membrane. (2) The removal efficiencies of TN and NH3-N in two MBRs exhibited good results which were greater than 85%. The removal efficiencies of TP were greater than 80% in both MBRs. (3) MLSS concentration changed from 2,000 mg/L to 7,000 mg/L during the experiment. PES membrane was not washed and the membrane flux was steady. However, the flux of PVDF one decreased quickly and was washed for twice. It meant that PES membrane had fine capability than PVDF one.

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48

Honig, C. R., T. E. Gayeski, A. Clark e P. A. Clark. "Arteriovenous oxygen diffusion shunt is negligible in resting and working gracilis muscles". American Journal of Physiology-Heart and Circulatory Physiology 261, n. 6 (1 dicembre 1991): H2031—H2043. http://dx.doi.org/10.1152/ajpheart.1991.261.6.h2031.

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Distribution of O2 within and among arterioles and venules was determined in dog and rat gracilis muscles with a cryospectrophotometric method. Saturation in 40-microns arterioles was not demonstrably different from saturation in the aorta even when flow was abnormally low. Arterioles greater than 40 microns ran parallel to venules. Measurements and a mathematical model indicate that diffusive shunting is negligible for typical separation distances between arterioles and venules. Most separation distances were greater than 30 microns. In some venule segments less than 15 microns from an arteriole, saturation within 10 microns of the wall facing the arteriole was higher than at other locations within the venule. However, saturation in the population of venules did not increase with venule diameter, and mean venular saturation was not different from saturation in effluent blood. We make the following conclusions: 1) a small arteriovenous diffusive O2 flux exists in postural muscles; 2) contribution of this flux to O2 mass balance is negligible; 3) O2 diffusivity of the arteriolar wall and surrounding tissue in vivo cannot be much higher than O2 diffusivity determined in vitro; and 4) effluent PO2 closely approximates mean end-capillary PO2.

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49

Oguamanam, D. C. D., J. S. Hansen e G. R. Heppler. "Nonlinear Transient Response of Thermally Loaded Laminated Panels1". Journal of Applied Mechanics 71, n. 1 (1 gennaio 2004): 49–56. http://dx.doi.org/10.1115/1.1631033.

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Abstract (sommario):

The nonlinear response of a composite laminated panel that is suddenly exposed to a heat flux is examined using the finite element method. The panel is cantilevered onto a rigid hub, the rotation motion of which is either fully or partially restrained. The panel elastic deformations are assumed large and are modeled via the von Ka´rma´n strain-displacement relationship while the rigid-body angular rotation, for the case of a rotating rigid hub, is assumed small. The system of nonlinear governing equations is solved by the Newton-Raphson method in conjunction with the Newmark time integration scheme. The panel deformation is observed to be sensitive to the motion of the base.

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Livoir-Petersen, M. F. "Le temps depuis le bébé La disponibilité de l’entourage, facteur du développement cognitif du bébé". Périnatalité 11, n. 2 (giugno 2019): 86–92. http://dx.doi.org/10.3166/rmp-2019-0051.

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Abstract (sommario):

Comment les interactions d’un bébé avec son milieu donnent-elles naissance à des catégories discrètes, impliquant des objets et des personnes en référence à un cadre spatio-temporel partagé ? Quels facteurs contribuent à la construction de ses représentations ? Quelle part y prend le temps ? Comment est-il lui-même représenté ? Nous adopterons l’approche du psychologue A. Bullinger, qui considère que l’élément décisif dans ce processus est l’intégration des signaux sensoriels produits par l’organisme aux signaux toniques générés par sa motricité. Les liaisons de ces deux types de signaux, les uns en rapport avec les flux irritant ses capteurs, les autres issus de son engagement moteur, seraient simultanément la clef de l’installation des conduites instrumentales et du phénomène de représentation. L’entourage joue un rôle spécifique. Le bébé trouve dans +la disponibilité des personnes qui s’occupent de lui un miroir sensoriel multimodal correspondant de manière synchrone et isomorphe à ses mimiques, ses ajustements posturaux, ses mouvements. Lorsque les moments de dialogue tonicoémotionnel ne peuvent être inscrits dans le projet de soin, on peut s’attendre à une perte de chances dans son développement cognitif et son autonomie ultérieure. Un peu de temps pour un gain de temps la vie durant ?

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