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Letteratura scientifica selezionata sul tema "RcoT"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 4 febbraio 2022

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Articoli di riviste sul tema "RcoT"

Thomine, J. M. "RCO=OTSR+RCOT". Revue de Chirurgie Orthopédique et Traumatologique 95, n. 1 (febbraio 2009): 1. http://dx.doi.org/10.1016/j.rcot.2009.02.006.

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Beaufils, P. "OTSR-RCOT: 1 year already!" Orthopaedics & Traumatology: Surgery & Research 96, n. 1 (febbraio 2010): 1. http://dx.doi.org/10.1016/j.otsr.2010.03.001.

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Beaufils, P. "OTSR-RCOT, un an déjà !" Revue de Chirurgie Orthopédique et Traumatologique 96, n. 1 (febbraio 2010): 1. http://dx.doi.org/10.1016/s1877-0517(10)00021-3.

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Yamagishi, K., M. Togashi, S. Furuya, K. Tsukahara e N. Yoshimura. "A Study on the Contour of the Radial Tire: Rolling Contour Optimization Theory — RCOT". Tire Science and Technology 15, n. 1 (1 gennaio 1987): 3–29. http://dx.doi.org/10.2346/1.2148779.

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Abstract The Rolling Contour Optimization Theory (RCOT) can lead to improved steering, fuel efficiency, riding comfort, and braking performance of tires relative to those of conventional shape. The conventional shape has been guided by natural equilibrium profiles, while the RCOT technology shape is guided by that of the tire in motion. This reduces useless distortions caused by running the tire under load. The RCOT design focuses on the distribution of belt and sidewall tension in the tire. Controlling tension in the belt and carcass area while the tire is in motion was the key to creating this new tire shape.

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Beaufils, P., e B. Augereau. "OTSR-RCOT celebrates its 100th issue". Orthopaedics & Traumatology: Surgery & Research 100, n. 1 (febbraio 2014): 1–3. http://dx.doi.org/10.1016/j.otsr.2013.12.001.

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Beaufils, P. "OTSR-RCOT où en sommes-nous ?" Revue de Chirurgie Orthopédique et Traumatologique 96, n. 5 (settembre 2010): 563. http://dx.doi.org/10.1016/j.rcot.2010.07.027.

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Beaufils, P., e B. Augereau. "OTSR-RCOT fête son no 100 !" Revue de Chirurgie Orthopédique et Traumatologique 100, n. 1 (febbraio 2014): 1–2. http://dx.doi.org/10.1016/j.rcot.2013.12.002.

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Beaufils, P. "OTSR-RCOT : un succès et donc une exigence de qualité !" Revue de Chirurgie Orthopédique et Traumatologique 98, n. 2 (aprile 2012): 123–24. http://dx.doi.org/10.1016/j.rcot.2012.02.015.

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Beaufils, P., e P. Léger. "OTSR-RCOT: A journal designed to serve its authors and readers". Orthopaedics & Traumatology: Surgery & Research 101, n. 1 (febbraio 2015): 1–2. http://dx.doi.org/10.1016/j.otsr.2015.01.002.

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Berthelot, Michel, Maryvonne Helbert e Christian Laurence. "Stéréochimie des complexes du chlorure d'iode avec les bases carbonylées". Canadian Journal of Chemistry 63, n. 4 (1 aprile 1985): 958–62. http://dx.doi.org/10.1139/v85-159.

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The splitting of the ν(I—Cl) and ν(C=O) bands of ICl complexes with carbonyl bases in highly diluted heptane solutions is explained by the existence of two 1:1 stereoisomeric complexes: a linear complex (ICl along the axis of the carbonyl bond) and an angular complex (ICl in the direction of a lone pair). In the series RCOOEt, RCOPh, RCOt-Bu, R2CO, RCONPh2 and RCONMe2, where R = Me, Et, i-Pr, or t-Bu, the angular complex for R = Me transforms into the linear complex for R = t-Bu, since bulky substituents on the carbonyl group destabilize the angular arrangement. In the series RCOH and RCOMe the complex is angular whatever the steric effect of R, since ICl is located on the lone pair near the small H or Me substituents. When ICl is added in excess, a 1:2 complex appears.

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Più fonti

Tesi sul tema "RcoT"

Steyaert, Johanna M. "Studies on the regulation of conidiation in species of Trichoderma". Lincoln University, 2007. http://hdl.handle.net/10182/544.

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A characteristic feature of species of Trichoderma is the production of concentric rings of conidia in response to alternating light-dark conditions. In response to a single burst of light, a single ring of conidia forms at what was the colony perimeter. On the basis of these observations, competency to photoconidiate has been proposed to be due to the age and metabolic rate of the hyphal cell. In this study, conidiation was investigated in five biocontrol isolates (T. hamatum, T. atroviride, T. asperellum, T. virens and T. harzianum) using both a morphological and molecular approach. All five isolates produced concentric conidial rings under alternating light-dark conditions on potato-dextrose agar (PDA), however, in response to a 15 min burst of blue light, only T. asperellum and T. virens produced a clearly, defined conidial ring which correlated with the colony margin at the time of light exposure. Both T. harzianum and T. hamatum photoconidiated in a disk-like fashion and T. atroviride produced a broken ring with a partially filled in appearance. On the basis of these results, it was postulated that competency to photoconidiate is a factor of the metabolic state of the hyphal cell rather than chronological age or metabolic rate. The influence of the source of nitrogen on photoconidiation was assessed on pH-buffered (pH 5.4) minimal medium (MM) amended with glutamine, urea or KNO₃. In the presence of glutamine or urea, T. asperellum and T. harzianum conidiated in a disk, whereas, when KNO₃ was the sole nitrogen source, a ring of conidia was produced. Further, in the presence of increasing amounts of glutamine, the clearly defined photoconidial ring produced on PDA by T. asperellum became disk-like. These results clearly demonstrated that primary nitrogen promotes photoconidiation in these isolates and strongly suggests that competency of a hyphal cell to conidiate in response to light is dependent on the nitrogen catabolite repression state of the cell. The experiments were repeated for all five isolates on unbuffered MM. Differences were apparent between the buffered and unbuffered experiments for T. atroviride. No photoconidiation was observed in T. atroviride on buffered medium whereas on unbuffered medium, rings of conidia were produced on both primary and secondary nitrogen. These results show that photoconidiation in T. atroviride is influenced by the buffering capacity of the medium. Conidiation in response to light by T. hamatum and T. virens was absent in all nitrogen experiments, regardless of the nitrogen source and buffering capacity, whereas both isolates conidiated in response to light on PDA. These results imply that either both sources of nitrogen are required for photoconidiation, or a factor essential for conidiation in these two isolates was absent in the minimal medium. Mycelial injury was also investigated in five biocontrol isolates of Trichoderma. On PDA, all isolates except T. hamatum conidiated in response to injury. On nitrogen amended MM, conidiation in response to injury was again observed in all isolates except for T. hamatum. In T. atroviride, injury-induced conidiation was observed on all medium combinations except the pH-buffered MM amended with glutamine or urea and T. virens conidiated in response to injury on primary nitrogen only, regardless of the buffering capacity. These results have revealed conidiation in response to injury to be differentially regulated between isolates/species of Trichoderma. On unbuffered MM amended with glutamine or urea, conidiation in response to injury occurred at the colony perimeter only in T. atroviride. It was hypothesised that the restriction of conidiation to the perimeter may be due to changes in the pH of the agar. The experiment was repeated and the pH values of the agar under the growing colony measured at the time of light induction (48 h) or injury (72 h). The areas under the hyphal fronts were acidified to below the starting value of the medium (pH 5.4) and the centres of the plates were alkalinised. The region of acidification at the time of stimuli correlated with the production of conidia, which implicates a role for crossregulation of conidiation by the ambient pH. The influence of the ambient pH on injury-induced conidiation was investigated in T. hamatum and T. atroviride on MM amended with glutamine and PDA, pH-buffered from pH 2.8 to 5.6. Thickening of the hyphae around the injury site was observed at the lowest pH values on MM in both T. atroviride and T. hamatum, however no conidia were produced, whereas both Trichoderma species conidiated on pH-buffered PDA in a strictly low pH-dependent fashion. This is the first observation of injury-induced conidiation in T. hamatum. The influence of the ambient pH on photoconidiation was assessed in T. hamatum, T. atroviride and T. harzianum using both buffered and unbuffered PDA from pH 2.8 to 5.2. On buffered PDA, no conidiation in response to light was observed above pH 3.2 in T. hamatum, above 4.0 in T. atroviride and above 4.4 in T. harzianum, whereas on unbuffered PDA it occurred at all pH values tested. It was postulated that conidiation at pH values above 4.4 on unbuffered PDA was due to acidification of the agar. The pH values of the agar under the growing colony were measured at the time of light exposure and in contrast to the MM with glutamine experiments, alkalisation of the agar had occurred in both T. atroviride and T. hamatum. No change in medium pH was recorded under the growing T. harzianum colony. These results indicate that low pH-dependence of photoconidiation is directly related to the buffering capacity of the medium. Recent studies have linked regulation of conidiation in T. harzianum to Pac1, the PacC orthologue. In fungi, PacC regulates gene expression in response to the ambient pH. In these studies pH-dependent photoconidiation occurred only on buffered PDA and on unbuffered PDA conidiation occurred at significantly higher ambient pH levels. It is proposed that the influence of ambient pH on conidiation in the isolates used in this study is not due to direct Pac1 regulation. The T. harzianum isolate used in this study produced profuse amounts of the yellow anthraquinone pachybasin. Production of this secondary metabolite was strictly pH-dependent, irrespective of the buffering capacity of the medium. Studies in T. harzianum have linked Pac1 regulation to production of an antifungal α-pyrone. pH-dependence on both buffered and unbuffered media strongly suggests that pachybasin production may also be under the control of Pac1. Photoconidiation studies on broth-soaked filter paper, revealed rhythmic conidiation in the pachybasin producing T. harzianum isolate. Diffuse rings of conidia were produced in dark-grown cultures and, in cultures exposed to light for 15 min at 48 h, the rings were clearly defined. These results show that conidiation is under the control of an endogenous rhythm in T. harzianum and represent the first report of circadian conidiation in a wild-type Trichoderma. A Free-Running Rhythm (FRR) assay was used to investigate rhythmic gene expression in T. atroviride IMI206040 and a mutant derivative, in which the wc-2 orthologue, blr-2, was disrupted. Over a 3 d period, expression of gpd, which encodes the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase, oscillated with a period of about 48 h. In the Δblr-2 mutant, the gpd rhythm was absent. These results revealed that in T. atroviride, gpd expression is under the control of an endogenous clock and that clock-regulated expression of gpd is associated with a functional BLR complex. Using degenerate primers, a portion of frq, which encodes the N. crassa clock oscillator FREQUENCY, was isolated from T. atroviride and used to probe the FRR assay northern blots. No frq expression was detected at any time point, which suggests that the circadian clock in Trichoderma does not involve FREQUENCY. In a concurrent study, orthologues of rco-1 (rcoT) were isolated and sequenced from T. atroviride and T. hamatum using a combination of degenerate, inverse and specific PCR. RcoT is an orthologue of the yeast global co-repressor Tup1 and in the filamentous fungi, RcoT orthologues have been demonstrated to negatively regulate conidiation. Genomic analysis of all available rcoT orthologues revealed the conservation of erg3, a major ergosterol biosynthesis gene, upstream from rcoT in ascomycetous filamentous fungi, but not in the ascomycetous yeast or in the basidiomycetes. These studies have significantly contributed to our understanding of the regulatory factors controlling conidiation in Trichoderma and have multiple implications for Trichoderma biocontrol; most notable the promotion of conidiation by primary nitrogen and low pH. Incubation conditions can be altered to suit the nitrogen and pH preferences of a biocontrol strain in order to promote cost effective conidial production, however this is not easily achieved in the soil, where the biocontrol strain must perform in a highly buffered environment optimised for plant growth. Successful use of Trichoderma biocontrol strains may involve the screening and targeting of strains to the appropriate pH conditions or the selection of new strains on the basis of capacity to perform under a given range of conditions.

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Pratap, Kadam Poonam. "Radiometric Calibration of a Hybrid RCWT Imaging Model". Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/339045.

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The applications of low-light imaging are widespread in areas such as biomedical imaging, remote sensing, ratiometric imaging, lithography, etc. The goal of this work is to develop a radiometrically scaled hybrid RCWT calculator to count the photons detected for such applications. The rigorous computation of different imaging models are discussed. An approach to calibrate the radiometry of the hybrid RCWT model for partially coherent illumination is presented. The diffraction from the object is evaluated rigorously using the hybrid RCWT model. A test bench is set up to validate the radiometrically scaled simulations. In all the cases considered, simulation and experiment agree within a 40% difference.

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Koudela, Daniela. "Lifshitz transitions in RCo5 (R=Y, La) and in Osmium". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1172236213581-34868.

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The aim of this thesis was to find anomalies of elastic properties induced by topological changes of the Fermi surface. The latter are called "Lifshitz transitions". Lifshitz transitions are an interesting subject to study because a topological change of the Fermi surface results in a van Hove singularity of the density of states at the Fermi energy, which again induces an anomaly in the free energy and therefore yield anomalies of observable physical quantities. In all cases the question arose, if the corresponding van Hove singularities are large enough to cause anomalies in the elastic properties, which are measurable by nowadays experimental techniques and computable within the accuracy reachable in nowadays computer calculations. The calculations have been done with the Full-Potential nonorthogonal Local-Orbital minimum-basis band-structure code FPLO. To shift the van Hove singularities through the Fermi energy we used hydrostatic pressure, which is mimicked in the computations by decreasing the volume of the unit cell. The materials under consideration had been YCo5 and LaCo5 as examples for magnetic compounds and the element Osmium as an example for a non-magnetic material. All these materials exhibit hexagonal symmetry. In the case of YCo5 our calculations yield a first order Lifshitz transition. Here, an extraordinarily large peak in the spin-up part of the DOS, which is caused by a nearly dispersionless band in the hexagonal plane, crosses the Fermi level under a pressure of about 21 GPa. Thus, the spin-up 3d states become partly depopulated, which results in a drop of the total magnetic moment of 35%. Therefore the transition can be regarded as a transition from strong to weak ferromagnetism. Further, the transition results in a volume collapse of 1.4%. Though the volume collapse is isomorphic, it exhibits the following anisotropy: while the lattice constant in the hexagonal plane is almost smoothly contracting with increasing pressure, the lattice constant in c-direction collapses at the transition-pressure. This volume collapse has been verified in experiment. Analogous calculations have been performed for the compound LaCo5, which is isoelectronic to YCo5. Here as well we predict a first order Lifshitz transition, taking place at a pressure of about 23 GPa. The mechanism of the transition is the same than in YCo5. Again we find a volume collapse under pressure together with a decrease of the magnetic moment. The relative volume change amounts to 1.3%. Like in YCo5, the unit cell dimensions in the hexagonal plane are decreasing almost smoothly with pressure while in c-direction the lattice constant collapses at the transition-pressure. For LaCo5 there are no such experiments done so far to the best of our knowledge. For Osmium we found, that LDA reproduces the ground state volume very well. Furthermore, we could detect three Lifshitz transitions taking place at very high pressures of about 72 GPa, 81 GPa, and 122 GPa. At first, a hole ellipsoid appears at the Gamma-point (V=24.6Å^3, P=72 GPa), then a neck is created at the symmetry-line LH (V=24.2Å^3, P=81 GPa), and finally a hole ellipsoid appears at the L-point (V=23.2 Å^3, P=122 GPa). Due to a degeneracy in the band structure, the hole ellipsoid at the L-point appears at the same pressure when the necks, situated at the symmetry-lines LH merge at L. The corresponding van Hove singularities in the DOS are very tiny and thus no anomalies in the elastic properties could be detected. Furthermore, we showed that the kink in c/a at 25 GPa and at 27 GPa found by Occelli et al. [Occelli et al., Phys. Rev. Lett. 93, 095502 (2004)] and Ma et al. [Ma et al., Phys. Rev. B 72, 174103 (2005)], respectively, is not statistically significant and that (c/a)(P) can be fitted equally well by a smooth function as by piece-wise linear functions as proposed in these references
Das Ziel dieser Arbeit war es, Anomalien in den elastischen Eigenschaften zu finden, die durch topologische Änderungen der Fermifläche - genannt "Lifschitz Übergänge" - hervorgerufen werden. Lifschitz Übergänge sind ein interessantes Forschungsgebiet, denn die topologische Änderung der Fermifläche führt zu einer van Hove Singularität in der Zustandsdichte, die an der Fermienergie liegt und eine Anomalie in der freien Energie hervorruft und deswegen zu Anomalien in beobachtbaren physikalischen Größen führt. In allen Fällen kam die Frage auf, ob die entsprechenden van Hove Singularitäten groß genug sind, um mit heutigen Methoden meßbare und berechenbare Anomalien in den elastischen Eigenschaften zu verursachen. Die Daten wurden mit dem Computerprogramm FPLO (Full-Potential nonorthogonal Local-Orbital minimum-basis band-structure scheme) berechnet. Um die van Hove Singularitäten durch die Fermienergie zu schieben, verkleinerten wir das Volumen der Einheitszelle, um hydrostatischen Druck zu simulieren. Als zu untersuchende Stoffe wurden YCo5 und LaCo5 als Beispiele für magnetische Verbindungen gewählt und Osmium als Beispiel für ein nicht magnetisches Element. Im Falle von YCo5 fanden wir einen Lifschitz Übergang erster Ordnung. Hier springt ein besonders großer Peak im Spin-auf Teil der Zustandsdichte unter einem Druck von ca. 21 GPa über die Fermienergie. Dadurch werden die Spin-auf 3d Zustände teilweise unbesetzt und das magnetische Moment verringert sich um 35%. Deswegen kann man den Übergang als einen Übergang von starkem Ferromagnetismus zu schwachem Ferromagnetismus bezeichnen. Das Volumen verkleinert sich hierbei um 1.4%. Obwohl dieser Volumenkollaps isomorph ist, zeigt er folgende Anisotropie: während die Gitterkonstante in der hexagonalen Ebene mit zunehmendem Druck mehr oder weniger glatt kontrahiert, kollabiert am Übergangsdruck die Gitterkonstante in c-Richtung. Dieser Volumenkollaps wurde vom Experiment verifiziert. Analoge Rechnungen wurden für die Verbindung LaCo5, die isoelektronisch zu YCo5 ist, durchgeführt. Auch hier sagen wir einen Lifschitz Übergang erster Ordnung voraus, der bei einem Druck von ca. 23 GPa stattfinden wird. Der Mechanismus dieses Übergangs ist der selbe wie in YCo5. Wiederum finden wir einen Volumenkollaps unter Druck zusammen mit einer Verringerung des magnetischen Moments. Die relative Volumenänderung beträgt hier 1.3%. Wie in YCo5 verläuft hier die Kontraktion der Gitterkonstante in der hexagonalen Ebene mehr oder weniger glatt, während die Gitterkonstante in c-Richtung am Übergang kollabiert. Für LaCo5 existieren unseres Wissens hierzu noch keine Experimente. Im Falle von Osmium fanden wir drei Lifschitz Übergänge bei sehr hohen Drücken von ca. 72 GPa, 81 GPa, und 122 GPa. Zuerst bildet sich ein Lochellipsoid am Gamma-Punkt (V=24.6Å^3, P=72 GPa), dann bildet sich ein Hals an der Symmetrielinie LH (V=24.2Å^3, P=81 GPa), und zum Schluß erscheint ein Lochellipsoid am L-Punkt (V=23.2 Å^3, P=122 GPa). Auf Grund einer Entartung in der Bandstruktur taucht das Lochellipsoid am L-Punkt an dem Druck auf, an dem sich auch die Hälse auf der Symmetrielinie LH bei L verbinden. Die entsprechenden van Hove Singularitäten in der Zustandsdichte sind jedoch extrem klein und deswegen können keine Anomalien in den elastischen Eigenschaften detektiert werden. Desweiteren zeigten wir, daß der Knick in c/a, den Occelli et al. [Occelli et al., Phys. Rev. Lett. 93, 095502 (2004)] bei 25 GPa und Ma et al. [Ma et al., Phys. Rev. B 72, 174103 (2005)] bei 27 GPa fanden, statistisch nicht relevant ist und daß (c/a)(P) genauso gut von einer glatten Funktion gefittet wird als von stückweise linearen Funktionen

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Koudela, Daniela. "Lifshitz transitions in RCo5 (R=Y, La) and in Osmium". Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A23889.

Testo completo

Abstract (sommario):

The aim of this thesis was to find anomalies of elastic properties induced by topological changes of the Fermi surface. The latter are called "Lifshitz transitions". Lifshitz transitions are an interesting subject to study because a topological change of the Fermi surface results in a van Hove singularity of the density of states at the Fermi energy, which again induces an anomaly in the free energy and therefore yield anomalies of observable physical quantities. In all cases the question arose, if the corresponding van Hove singularities are large enough to cause anomalies in the elastic properties, which are measurable by nowadays experimental techniques and computable within the accuracy reachable in nowadays computer calculations. The calculations have been done with the Full-Potential nonorthogonal Local-Orbital minimum-basis band-structure code FPLO. To shift the van Hove singularities through the Fermi energy we used hydrostatic pressure, which is mimicked in the computations by decreasing the volume of the unit cell. The materials under consideration had been YCo5 and LaCo5 as examples for magnetic compounds and the element Osmium as an example for a non-magnetic material. All these materials exhibit hexagonal symmetry. In the case of YCo5 our calculations yield a first order Lifshitz transition. Here, an extraordinarily large peak in the spin-up part of the DOS, which is caused by a nearly dispersionless band in the hexagonal plane, crosses the Fermi level under a pressure of about 21 GPa. Thus, the spin-up 3d states become partly depopulated, which results in a drop of the total magnetic moment of 35%. Therefore the transition can be regarded as a transition from strong to weak ferromagnetism. Further, the transition results in a volume collapse of 1.4%. Though the volume collapse is isomorphic, it exhibits the following anisotropy: while the lattice constant in the hexagonal plane is almost smoothly contracting with increasing pressure, the lattice constant in c-direction collapses at the transition-pressure. This volume collapse has been verified in experiment. Analogous calculations have been performed for the compound LaCo5, which is isoelectronic to YCo5. Here as well we predict a first order Lifshitz transition, taking place at a pressure of about 23 GPa. The mechanism of the transition is the same than in YCo5. Again we find a volume collapse under pressure together with a decrease of the magnetic moment. The relative volume change amounts to 1.3%. Like in YCo5, the unit cell dimensions in the hexagonal plane are decreasing almost smoothly with pressure while in c-direction the lattice constant collapses at the transition-pressure. For LaCo5 there are no such experiments done so far to the best of our knowledge. For Osmium we found, that LDA reproduces the ground state volume very well. Furthermore, we could detect three Lifshitz transitions taking place at very high pressures of about 72 GPa, 81 GPa, and 122 GPa. At first, a hole ellipsoid appears at the Gamma-point (V=24.6Å^3, P=72 GPa), then a neck is created at the symmetry-line LH (V=24.2Å^3, P=81 GPa), and finally a hole ellipsoid appears at the L-point (V=23.2 Å^3, P=122 GPa). Due to a degeneracy in the band structure, the hole ellipsoid at the L-point appears at the same pressure when the necks, situated at the symmetry-lines LH merge at L. The corresponding van Hove singularities in the DOS are very tiny and thus no anomalies in the elastic properties could be detected. Furthermore, we showed that the kink in c/a at 25 GPa and at 27 GPa found by Occelli et al. [Occelli et al., Phys. Rev. Lett. 93, 095502 (2004)] and Ma et al. [Ma et al., Phys. Rev. B 72, 174103 (2005)], respectively, is not statistically significant and that (c/a)(P) can be fitted equally well by a smooth function as by piece-wise linear functions as proposed in these references.
Das Ziel dieser Arbeit war es, Anomalien in den elastischen Eigenschaften zu finden, die durch topologische Änderungen der Fermifläche - genannt "Lifschitz Übergänge" - hervorgerufen werden. Lifschitz Übergänge sind ein interessantes Forschungsgebiet, denn die topologische Änderung der Fermifläche führt zu einer van Hove Singularität in der Zustandsdichte, die an der Fermienergie liegt und eine Anomalie in der freien Energie hervorruft und deswegen zu Anomalien in beobachtbaren physikalischen Größen führt. In allen Fällen kam die Frage auf, ob die entsprechenden van Hove Singularitäten groß genug sind, um mit heutigen Methoden meßbare und berechenbare Anomalien in den elastischen Eigenschaften zu verursachen. Die Daten wurden mit dem Computerprogramm FPLO (Full-Potential nonorthogonal Local-Orbital minimum-basis band-structure scheme) berechnet. Um die van Hove Singularitäten durch die Fermienergie zu schieben, verkleinerten wir das Volumen der Einheitszelle, um hydrostatischen Druck zu simulieren. Als zu untersuchende Stoffe wurden YCo5 und LaCo5 als Beispiele für magnetische Verbindungen gewählt und Osmium als Beispiel für ein nicht magnetisches Element. Im Falle von YCo5 fanden wir einen Lifschitz Übergang erster Ordnung. Hier springt ein besonders großer Peak im Spin-auf Teil der Zustandsdichte unter einem Druck von ca. 21 GPa über die Fermienergie. Dadurch werden die Spin-auf 3d Zustände teilweise unbesetzt und das magnetische Moment verringert sich um 35%. Deswegen kann man den Übergang als einen Übergang von starkem Ferromagnetismus zu schwachem Ferromagnetismus bezeichnen. Das Volumen verkleinert sich hierbei um 1.4%. Obwohl dieser Volumenkollaps isomorph ist, zeigt er folgende Anisotropie: während die Gitterkonstante in der hexagonalen Ebene mit zunehmendem Druck mehr oder weniger glatt kontrahiert, kollabiert am Übergangsdruck die Gitterkonstante in c-Richtung. Dieser Volumenkollaps wurde vom Experiment verifiziert. Analoge Rechnungen wurden für die Verbindung LaCo5, die isoelektronisch zu YCo5 ist, durchgeführt. Auch hier sagen wir einen Lifschitz Übergang erster Ordnung voraus, der bei einem Druck von ca. 23 GPa stattfinden wird. Der Mechanismus dieses Übergangs ist der selbe wie in YCo5. Wiederum finden wir einen Volumenkollaps unter Druck zusammen mit einer Verringerung des magnetischen Moments. Die relative Volumenänderung beträgt hier 1.3%. Wie in YCo5 verläuft hier die Kontraktion der Gitterkonstante in der hexagonalen Ebene mehr oder weniger glatt, während die Gitterkonstante in c-Richtung am Übergang kollabiert. Für LaCo5 existieren unseres Wissens hierzu noch keine Experimente. Im Falle von Osmium fanden wir drei Lifschitz Übergänge bei sehr hohen Drücken von ca. 72 GPa, 81 GPa, und 122 GPa. Zuerst bildet sich ein Lochellipsoid am Gamma-Punkt (V=24.6Å^3, P=72 GPa), dann bildet sich ein Hals an der Symmetrielinie LH (V=24.2Å^3, P=81 GPa), und zum Schluß erscheint ein Lochellipsoid am L-Punkt (V=23.2 Å^3, P=122 GPa). Auf Grund einer Entartung in der Bandstruktur taucht das Lochellipsoid am L-Punkt an dem Druck auf, an dem sich auch die Hälse auf der Symmetrielinie LH bei L verbinden. Die entsprechenden van Hove Singularitäten in der Zustandsdichte sind jedoch extrem klein und deswegen können keine Anomalien in den elastischen Eigenschaften detektiert werden. Desweiteren zeigten wir, daß der Knick in c/a, den Occelli et al. [Occelli et al., Phys. Rev. Lett. 93, 095502 (2004)] bei 25 GPa und Ma et al. [Ma et al., Phys. Rev. B 72, 174103 (2005)] bei 27 GPa fanden, statistisch nicht relevant ist und daß (c/a)(P) genauso gut von einer glatten Funktion gefittet wird als von stückweise linearen Funktionen.

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Rossetti, Alessandra. "Analisi del catalogo Europeo-Mediterraneo degli RCMT: 18 anni di dati". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10848/.

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L'RCMT (Regional Centroid Moment Tensor), realizzato e gestito dai ricercatori dell'INGV (Istituto Nazionale di Geofisica e Vulcanologia), è dal 1997 il catalogo di riferimento per gli eventi sismici avvenuti nell'area Europea-Mediterranea, ossia nella regione avente longitudine compresa tra 10° W e 40° E e latitudine compresa tra 25° N e 60° N. Tale regione è caratterizzata da un'attività tettonica complessa, legata non soltanto alla convergenza delle placche Euroasiatica ed Africana, ma anche al movimento di altre placche minori (ad esempio, la placca Arabica), che tutte insieme danno origine ad una vasta gamma di regimi tettonici. Col termine RCMT si indica un particolare tipo di tensore momento sismico, la cui determinazione avviene su scala regionale, per eventi sismici aventi M_w >= 4.5 (M_w >= 4.0 per gli eventi che avvengono nella penisola italica). Il tensore momento sismico è uno strumento fondamentale per caratterizzare natura ed entità di un terremoto. Da esso, infatti, oltre alla magnitudo momento M_w, si ricava anche il meccanismo focale. Comunemente rappresentato sotto forma di beach ball, consente di individuare il tipo di movimento (distensivo, compressivo o trascorrente, o anche una combinazione del primo o del secondo con il terzo) avvenuto sulla faglia che ha provocato il terremoto. I tensori momento sismico permettono, quindi, di identificare le faglie che si attivano durante una sequenza sismica, di comprendere la loro cinematica e di ipotizzare la successiva evoluzione a breve termine. Scopo di questa relazione di laurea è stato derivare le relazioni che intercorrono fra le M_w dell'RCMT e le M_w del CMT (Centroid Moment Tensor della Columbia University), del GFZ (Deutsches GeoForschungsZentrum di Postdam) e del TDMT (Time Domain Moment Tensor). Le relazioni sono state ottenute applicando il metodo dei minimi quadrati agli eventi comuni, che sono stati selezionati utilizzando alcuni semplici programmi scritti in Fortran.

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Montero, Raul Marcio Borjas. "Compensador de reativos tipo RCT controlado por microcomputador". [s.n.], 1987. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259904.

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Orientador: Sigmar M. Deckmann
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica
Made available in DSpace on 2018-07-17T05:21:20Z (GMT). No. of bitstreams: 1 Montero_RaulMarcioBorjas_M.pdf: 8569400 bytes, checksum: a96c9cc6c3e552a120dd1fae72f06552 (MD5) Previous issue date: 1987
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Mestrado
Mestre em Engenharia Elétrica

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Olsson, Elin, e Frida Bertling. "Mindfulness based stress reduction (MBSR) vid bröstcancer : - en litteraturöversikt". Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ, Avd. för omvårdnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-34685.

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Bakgrund: Mindfulness är ett nytt koncept inom omvårdnad. Mindfulness-based stress reduction (MBSR) är ett program som utvecklats från mindfulness inom vården. MBSR har studerats i samband med olika sjukdomar däribland cancer. Bröstcancer är den vanligaste maligna cancern hos kvinnor världen över och att få en cancerdiagnos medför både fysiska och psykiska svårigheter. Syfte: Att beskriva effekter av MBSR på personer med bröstcancer. Metod: Litteraturöversikt baserad på RCT-studier (randomised controlled trials). Datainsamling gjordes via CINAHL, Medline och PsychINFO och tolv RCT-studier granskades med en induktiv ansats. Resultat: Resultatet bygger på tolv RCT studier som jämför MBSR med vanlig behandling (VB) och är indelat i effekter avseende fysiskt välmående, effekter avseende psykiskt välmående, effekter avseende hantering och effekter avseende socialt välmående. Slutsats: Generellt finns kortsiktiga positiva effekter till följd av MBSR-programmet hos personer med bröstcancer. Dock är dessa effekter ofta uppmätta direkt efter interventionen och flera studier visar att dess effekt minskar efter tolv månader. Evidensen för att använda MBSR i vården av personer med bröstcancer är ännu låg och fler studier med längre uppföljning bör göras.
Background: Mindfulness is a fairly new concept in nursing. The MBSR-programme (Mindfulness based stress reduction) was developed from mindfulness in healthcare. MBSR has been studied in relation to different healthcare settings and illnesses there among cancer. Breast cancer is the most common cancer amongst women worldwide. To live with cancer entails both psychological and physical issues. Aim: To describe the effects of MBSR on persons with breast cancer. Method: A literature review based on RCT-studies (randomised controlled trials). Data collection was done using CINAHL, Medline and PsychINFO and twelve RCT-studies was examined with an inductive approach. Results: The result is based on twelve RCT-studies comparing MBSR with standard treatment and presented in effects related to: physical wellbeing, psychological wellbeing, coping and social wellbeing. Conclusion: Generally, there are short term positive effects of the MBSR-programme on persons with breast cancer. These effects are often measured directly after the intervention and several studies show that the effects diminish after twelve months. Evidence to use MBSR in healthcare for persons with breast cancer is still low and more studies with longer follow up should be conducted.

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Agbalalah, Tari. "Vitamin D and cardiometabolic disease risk : a RCT and cross-sectional study". Thesis, University of Chester, 2017. http://hdl.handle.net/10034/620602.

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Given the strong evidence for a beneficial role of vitamin D in diabetes and CVD pathogenesis, and the prevalence of vitamin D deficiency, vitamin D supplementation has been advocated for the prevention of cardiometabolic disease. To provide information on the effects of 5,000IU (125µg) vitamin D3 on cardiometabolic risk, a double blind, RCT in a cohort of overweight and obese UK adult males with plasma 25(OH)D concentration < 75nmol/L for a duration of 8 weeks was conducted. To the best of my knowledge, this is the first RCT to investigate the effect of 5,000IU (125µg) vitamin D3 on cardiometabolic markers in vitamin D insufficient, non-hypertensive and non-diabetic overweight and obese adult males.

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Santos, Leonardo Bacelar Lima. "Redes complexas de base territorializada (RCBT): conceito, caracterização e seu potencial de aplicação na modelagem epidemiológica". Instituto Nacional de Pesquisas Espaciais (INPE), 2014. http://urlib.net/sid.inpe.br/mtc-m21b/2014/03.16.04.10.

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A presente tese define Redes Complexas de Base Territorializada (RCBT): grafos com um grande número de vértices, todos de localização espacial conhecida, e regras de conexão que envolvem dependência espacial e que não operam nem de forma regular, nem completamente aleatória. A criação do conceito demanda o desenvolvimento de métodos para tratar dados reais e analisar os resultados do ponto de vista das redes (no formalismo da física estatística) e do fenômeno tratado (sistemas complexos). Ao longo do texto é apresentado um ciclo completo que vai da apropriação dos dados de Origem-Destino à análise dos padrões de circulação e das RCBT construídas com base nesses dados. A visualização em Sistema de Informações Geográficas dos diferentes padrões de circulação e dos atributos das RCBT ajuda a compreender espacialmente o conceito de Espaço de Atividade: conjunto de todos os territórios acessíveis a um indivíduo, desenvolvido como um conceito da geografia humana e hoje fundamental para a modelagem computacional de epidemias, especialmente em escala intraurbana. Em relação aos padrões de circulação, foi apresentada uma inovação para o ajuste gravitacional do fluxo de viagens em função do comprimento efetivo da rota. Pelas RCBT foram obtidas assinaturas clássicas de Sistemas Complexos na abordagem de Redes Complexas: distribuição livre de escala, efeito de pequeno mundo e comportamento hierárquico, simultaneamente à análise geográfica dos resultados.
The present thesis defines complex networks of territorialized base (CNTB): graphs with a large number of nodes, all of known spatial location, and connection rules that involve spatial dependence and that do not operate in a regular pattern, nor completely random. The creation of this concept ais o demands the development of methods to treat actual data and analyze the results from the point of view of complex networks (in the formalism of Statistical Physics) and of the phenomena under study (Complex Systems). Throughout the text it is given a original and full cycle that will cover the appropriation of origin-destination data to the analysis of the movement patterns and the CNTB construction based on these data. The visualization, in Geographical Information Systems, of the different patterns of movement, and the attributes of the CNTB, helps understanding the concept of Spatial Activity Space: set of all the territories that are accessible to an individual, developed as a concept of human geography and today fundamental to computational modeling of epidemics, especially in the intraurban scale. Regarding movement patterns, was presented a gravitational adjustment for travei flow as a route's length function. By the use of CNTB, classic signatures were obtained from complex systems using the complex networks approach: scale-free distribution, small-world effect and hierarchical behavior, simultaneously to the geographical analysis of the results.

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Falgin, Hultgren Jonas. "The Acute Metabolic Response of Intermittent Hypoxic Resistance Exercise : A Cross-Over RCT". Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-5791.

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Aim The aim for this present study was to investigate the acute metabolic response from intermittent resistance exercise during hypoxia, with the following research questions: (1) Are blood levels of lactate and glucose different between hypoxia and normoxia? (2) Does hypoxia induce higher lactate accumulation and pH reduction in the human skeletal muscle? (3) Is there a relationship between plasma-, blood- and muscle lactate? Method Eight healthy males (30 ± 2 years) performed 6 sets of unilateral leg extension on each leg (75% of 1RM) with randomized normoxic (20,9% inspired 𝑂2) and normobaric hypoxic (12% inspired 𝑂2) conditions. A total of 5 muscle biopsies was extracted from m. Vastus Lateralis (pre-, post exercise, 90-, 180min and 24h post exercise) during both normoxia and hypoxia trials, separated by one week for all participants. Blood samples were repeatedly taken with 20 min intervals. Heart Rate (HR) and saturation (𝑆𝑝𝑂2) were measured by a pulsoximeter during resistance exercise. Results No significant main effect was observed for blood lactate and glucose levels as well as the muscle lactate accumulation and pH between normoxia and hypoxia. However, pH in muscle showed a trend between the conditions post exercise where hypoxia reached lower levels in total (P=0.08). Significant correlations were observed for blood- and plasma lactate, where hypoxia showed a stronger relationship than normoxia (r=0.98 compared to r=0.87). Equal findings for the correlation of muscle- and plasma lactate showed an even greater coefficient value for hypoxia compared to normoxia (r=0.860 compared to r=0.59). Conclusion Summarized data indicated that no significant difference between hypoxia and normoxia was evident. Nonetheless, tendencies illustrate that hypoxia may alter the metabolic response slightly. However, further research is needed to draw a conclusion between the conditions.
Syftet med denna studie är att undersöka kroppens akuta metabola svar från intermittent styrketräning under hypoxi, med följande frågeställningar: (1) Skiljer sig nivåerna av laktat och glukos i blodet mellan hypoxi och normoxi? (2) Skapar hypoxi större laktatansamling och pH reduktion i människoskelettmuskeln? (3) Finns det en relation mellan plasma-, blod- och muskellaktat? Metod Åtta friska män (30 ± 2 år) deltog där deltagarna utförde 6 set unilateral benextension för varje ben (75% 1RM). Intermittent styrketräning randomiserades med hypoxi som utfördes med 12% syrgas och normoxi som bibehöll normal syrgasnivå (20,9% syrgas). Under två testdagar togs 5 muskelbiopsier från m. Vastus Lateralis (före-, efter träning, 90-, 180min och 24h efter träning) på vartannat ben per testdag. Hjärtfrekvensen och 𝑆𝑝𝑂2 mättes via pulsoximeter under träningen. Resultat Ingen signifikant huvudeffekt påvisades mellan hypoxi och normoxi för blodlaktat samt glukos, såväl som laktatackumulationen och pH värdet i muskeln. Muskel pH visade en trend där hypoxi efter styrketräning nådde lägre totalnivå än normoxi (P=0,08). Vidare observerades hypoxi att ha starka relationer mellan blod- och plasmalaktat jämfört med normoxi (r=0,98 vs. r=0,87). Större skillnad framgick för korrelationen mellan muskel- och plasmalaktat där hypoxi-försöket utgav starkare koefficient jämfört med normoxi (r=0,86 vs. r=0,59). Konklusion Sammanfattad data visar att hypoxi inte skapar större metabolisk respons vid intermittent styrketräning. Trots detta framkom tendenser som illustrerar att hypoxi kan påverka den metabola stressen under styrketräning. Däremot krävs vidare forskning för att kunna säkerställa effekten av hypoxi på kroppens metabola svar.
Ingår i Marcus Mobergs projekt: ”Resistance exercise under hypoxia and the acute molecular effects in human skeletal muscle

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Libri sul tema "RcoT"

Siassakos, Dimitrios, Georgios Attilakos, Gale Alison, Timothy J. Draycott e Winter Cathy. ROBuST: RCOG operative birth simulation training : Trainer's manual. Cambridge, United Kingdom: Cambridge University Press, 2015.

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Royal College of Obstetricians and Gynaecologists. Working Party on Continuing Medical Education. Report of the RCOG Working Party on Continuing Medical Education. London: Royal College of Obstetricians and Gynaecologists, 1991.

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Royal College of Obstetricians and Gynaecologists. Ultrasound screening for fetal abnormalities: Report of the RCOG Working Party. London: R.C.O.G., 1997.

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Royal College of Obstetricians and Gynaecologists. Working Party on the Management of Perinatal Deaths. Report of the RCOG Working Party on the Management of Perinatal Deaths. London: Royal College of Obstetricians and Gynaecologists, 1985.

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Kono, Robert H. The last fox: A novel of the 100th/442nd RCT. Eugene, Or: Abe Publishing, 2001.

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Royal College of Obstetricians and Gynaecologists. Sub-Committee on Problems Associated with AIDS in Relation to Obstetrics and Gynaecology. Report of the RCOG Sub-Committee on Problems Associated with AIDS in Relation to Obstetrics and Gynaecology. London: R.C.O.G., 1987.

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Pray, Gary J. Purple heart in the Pacific: A combat chronicle, C Company 21st RCT, 24th Infantry Division. Kankakee, IL: Gary J. Pray, 2001.

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Lou, DeMarco-Keating Mary, e Lansing Janet B, a cura di. NYS-RCT science review: A comprehensive review for the New York State Regents competency test in science. Middletown, N.Y: N & N Pub. Co., 1987.

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China) International Conference on Contaminated Sites Remediation (2011 Chongqing. Contaminated sites remediation: Selected, peer reviewed papers from the International Conference on Contaminated Sites Remediation 2011 International Forum (RCST 2011), October 25-27, 2011, Chongqing, China. Durnten-Zurich: Trans Tech Publications Inc., 2012.

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Great Britain. Army. Royal Corps of Transport. Waggoner's way: A century of the Corps' past from the journals of the ASC, RASC and RCT and from Corps photographic archives 1891-1991. [Whittlebury]: Baron, 1993.

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Capitoli di libri sul tema "RcoT"

Djéga-Mariadassou, C. "1.1.3.2 RCo(5+Є)-RCo7 type (0 < s ≤ 0.22)". In Nanocrystalline Materials, Part A, 68–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32399-7_10.

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Djéga-Mariadassou, C. "1.1.1 RCo3 type". In Nanocrystalline Materials, Part A, 8–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32399-7_4.

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Moore, Gregory, e Nathan Seiberg. "Lectures on RCFT". In NATO ASI Series, 263–361. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-3802-8_8.

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Djéga-Mariadassou, C. "1.1.3.1 RCo5 (s = 0)". In Nanocrystalline Materials, Part A, 29–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32399-7_9.

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Djéga-Mariadassou, C. "1.1.1.2 RCo3-based nanocomposites". In Nanocrystalline Materials, Part A, 13–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32399-7_5.

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Gauthier, François. "RCT, RIP! Rethinking marketisation". In Religion, Modernity, Globalisation, 158–86. Abingdon, Oxon ; New York : Routledge, 2020.: Routledge, 2019. http://dx.doi.org/10.4324/9780429276033-6.

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Tauler Riera, Pedro, Maurizio Volterrani, Ferdinando Iellamo, Francesco Fallo, Andrea Ermolao, William J. Kraemer, Nicholas A. Ratamess, Avery Faigenbaum, Andrew Philp e Keith Baar. "Reverse Cholesterol Transport (RCT)". In Encyclopedia of Exercise Medicine in Health and Disease, 773. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_2980.

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Guha, Debajyoti, Rajdeep Chakraborty e J. K. Mandal. "Rotational Cryptographic Technique (RCT)". In Learning and Analytics in Intelligent Systems, 150–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-42363-6_18.

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Mehlhorn, Heinz. "Randomized Control Trial (RCT)". In Encyclopedia of Parasitology, 2311. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4256.

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Mehlhorn, Heinz. "Randomized Control Trial (RCT)". In Encyclopedia of Parasitology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4256-1.

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Fujimoto, Yasutaka, Toshio Shinoki, Hirochika Tanigawa, Jiro Funaki e Katsuya Hirata. "Hydrogen Production by a Steam Reforming Reactor for Heavy Hydrocarbons". In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55382.

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The authors develop a small and simple steam-reforming reactor in a home-use size for n-dodecane as a heavy-hydrocarbons fuel. Under the thermal condition controlled by electric heaters and a gas burner with a thermal diffuser, the authors measure the inside-temperature profile and the hydrogen-molecule ratio (concentration) RH2, together with the molecule ratios RCH4, RCO and RCO2 of other main gas components such as CH4, CO and CO2, respectively. Besides, the authors conduct numerical simulations based on a thermal-equilibrium theory, in addition to experiments. As a result, the authors successfully achieve suitable inside-temperature profiles. And, the effects of the liquid-hourly-space velocity LHSV upon RH2, RCH4, RCO and RCO2 are shown, experimentally. For LHSV ≤ 1, the experimental results agree well with the thermal equilibrium theory. This is in consistent with high conversion ratio XC12H26 ≳ 80%. Furthermore, the authors reveal the effects of the temperature T inside the reactor upon the molecule ratios, comparing with the thermal-equilibrium theory.

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Chernich, Ron, Bruce Jamieson e David Jones. "RCOS". In the first Australasian conference. New York, New York, USA: ACM Press, 1996. http://dx.doi.org/10.1145/369585.369624.

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Paek, Jeongyeup, e Ramesh Govindan. "RCRT". In the 5th international conference. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1322263.1322293.

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Wang, Zheng, Xiao Yu, Geguang Pu, Libo Feng, Huibiao Zhu e Jifeng He. "Execution Semantics for rCOS". In 2008 15th Asia-Pacific Software Engineering Conference. IEEE, 2008. http://dx.doi.org/10.1109/apsec.2008.11.

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Smith, Margaret, e Klaus Havelund. "Requirements Capture with RCAT". In 2008 16th IEEE International Requirements Engineering Conference (RE). IEEE, 2008. http://dx.doi.org/10.1109/re.2008.50.

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Sun, Xiaoduan, M. Ashifur Rahman e Ming Sun. "Safety Analysis of RCUT Intersection". In 2019 6th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS). IEEE, 2019. http://dx.doi.org/10.1109/mtits.2019.8883332.

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He, Q., e Y. Guo. "Magnetic phase relations of RCo3". In 2015 IEEE International Magnetics Conference (INTERMAG). IEEE, 2015. http://dx.doi.org/10.1109/intmag.2015.7157024.

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Wang, Wei, Wuli Chu, Haoguang Zhang e Yanhui Wu. "The Effects on Stability, Performance, and Tip Leakage Flow of Recirculating Casing Treatment in a Subsonic Axial Flow Compressor". In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56756.

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Recirculating casing treatment (RCT) was studied in a subsonic axial flow compressor experimentally and numerically. The RCT was parameterized with the injector throat height and circumferential coverage percentage (ccp) to investigate its influence on compressor stability and on the overall performance in the experimentation. The injector throat height varied from 2 to 6 times the height of the rotor tip clearance, and the ccp ranged from 8.3% to 25% of the casing perimeter. Various RCT configurations were achieved with a modular design procedure. The rotor casing was instrumented with fast-response pressure transducers to detect the stall inception, rotational speed of stall cells, and pressure flow fields. Whole-passage unsteady simulations were also implemented for the RCT and solid casing to understand the flow details. Results indicate that both the compressor stability and overall performance can be improved through RCT with appropriate geometrical parameters. The effect of injector throat height on the stability depends on the choice of ccp, i.e., interaction effect exists. In general, the RCT with a moderate injector throat height and a large circumferential coverage is the optimal choice. Phase-locked pattern of the casing wall pressure reveals a weakened tip leakage vortex under the effect of RCT compared with the solid casing. The numerical results show that the RCT has a substantial effect on tip blockage even when the blade passages break away from the domain of RCT. The reduction of tip blockage induced by the tip leakage vortex is the main reason for the extension of stable operation range. The unsteadiness of double-leakage flow is detected both in the experiment and in numerical simulations. The pressure fluctuations caused by double-leakage flow are depressed with RCT. This observation indicates reduced losses related with the double-leakage flow. Although the stall inception is not changed by implementing RCT, the stall pattern is altered. The stall with two cells is detected in RCT compared with the solid casing with only one stall cell.

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Debeauvais, Thomas, Arthur Valadares e Cristina V. Lopes. "RCAT: A RESTful client-scalable architecture". In 2011 10th Annual Workshop on Network and Systems Support for Games (NetGames). IEEE, 2011. http://dx.doi.org/10.1109/netgames.2011.6080987.

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Yao, Lei, Lei Cao e Chang Wen Chen. "Progressive image transmission with RCPT protection". In Electronic Imaging 2007, a cura di Chang Wen Chen, Dan Schonfeld e Jiebo Luo. SPIE, 2007. http://dx.doi.org/10.1117/12.703675.

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Rapporti di organizzazioni sul tema "RcoT"

Hill, Matthew. RCT: 2.01 RADIOLOGICAL DOCUMENTATION. Office of Scientific and Technical Information (OSTI), giugno 2021. http://dx.doi.org/10.2172/1788387.

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Moore, G., e N. Seiberg. Lectures on RCFT (Rational Conformal Field Theory). Office of Scientific and Technical Information (OSTI), settembre 1989. http://dx.doi.org/10.2172/7038633.

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Hillmer, Kurt T. RCT: Module 2.04, Dosimetry, Course 8769. Office of Scientific and Technical Information (OSTI), agosto 2017. http://dx.doi.org/10.2172/1375146.

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Hillmer, Kurt T. RCT: 2.02 Communication Systems, Course #33339. Office of Scientific and Technical Information (OSTI), maggio 2016. http://dx.doi.org/10.2172/1253555.

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Hillmer, Kurt T. RCT: 2.05 Contamination Control, Course #8770. Office of Scientific and Technical Information (OSTI), maggio 2016. http://dx.doi.org/10.2172/1254241.

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Wagner, Edward, e Ted Lesster. DOE-RCT-0003641 Final Technical Report. Office of Scientific and Technical Information (OSTI), luglio 2014. http://dx.doi.org/10.2172/1166715.

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Cheatham, Matthew. RCT Continuing Training (Q2 2021) [Slides]. Office of Scientific and Technical Information (OSTI), aprile 2021. http://dx.doi.org/10.2172/1784684.

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Gillilan, Justin. RCT Continuing Training: 3rd Quarter 2021. Office of Scientific and Technical Information (OSTI), agosto 2021. http://dx.doi.org/10.2172/1812646.

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Hillmer, Kurt T. RCT: 2.01 Radiological Documentation, Course No. 32974. Office of Scientific and Technical Information (OSTI), aprile 2016. http://dx.doi.org/10.2172/1249006.

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Hillmer, Kurt T. RCT: Module 2.07, Respiratory Protection, Course 8773. Office of Scientific and Technical Information (OSTI), agosto 2017. http://dx.doi.org/10.2172/1375139.

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