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The factor structure of this ... [more ▼]Hallucinatory experiences in nonclinical subjects were examined using a French adaptation of a self-report questionnaire (Launay-Slade Hallucinations Scale; LSHS). The factor structure of this questionnaire was examined. In addition to prevalence, we explored various characteristics of the reported hallucinatory experiences, including frequency, degree of control, emotional reaction, relationship to stressful events, and personal saliency. We also examined the relationship between the presence of hallucinatory experiences and other factors, such as substance use and social desirability. Two hundred and thirty-six nonclinical participants completed a modified version of the LSHS, a social desirability scale, and answered follow up questions. Factor analysis of the present version of the LSHS revealed a five-factor structure. Results regarding participants' hallucination frequency, perceived levels of control, and affective responses are reported. Additional results and implications are discussed. [less ▲]Detailed reference viewed: 95 (8 ULg) Noncollinear magnetism and single-ion anisotropy in multiferroic perovskitesWeingart, C.; Spaldin, N.; Bousquet, Eric in Physical Review. B, Condensed Matter and Materials Physics (2012), 86(9), The link between the crystal distortions of the perovskite structure and the magnetic exchange interaction, the single-ion anisotropy (SIA), and the Dzyaloshinsky-Moriya (DM) interaction are investigated ... [more ▼]The link between the crystal distortions of the perovskite structure and the magnetic exchange interaction, the single-ion anisotropy (SIA), and the Dzyaloshinsky-Moriya (DM) interaction are investigated by means of density functional calculations. Using BiFeO 3 and LaFeO 3 as model systems, we quantify the relationship between the oxygen octahedra rotations, the ferroelectricity, and the weak ferromagnetism (wFM). We recover the fact that the wFM is due to the DM interaction induced by the oxygen octahedra rotations. We find a simple relationship between the wFM, the oxygen rotation amplitude, and the ratio between the DM vector and the exchange parameter such that the wFM increases with the oxygen octahedra rotation when the SIA does not compete with the DM forces induced on the spins. Unexpectedly, we also find that in spite of the d5 electronic configuration of Fe3 +, the SIA is very large in some structures and is surprisingly strongly sensitive to the chemistry of the A-site cation of the ABO 3 perovskite. In the ground R3c state phase we show that the SIA shape induced by the ferroelectricity and the oxygen octahedra rotations are in competition such that it is possible to turn the wFM "on" and "off" through the relative size of the two types of distortion. © 2012 American Physical Society. [less ▲]Detailed reference viewed: 31 (3 ULg) Noncollinear magnetism in post-perovskites from first-principles: Comparison between CaRhO3 and NaNiF3Garcia Castro, Andrés Camilo ; Romero, Aldo; Bousquet, Eric in Physica Status Solidi B. Basic Research (2015), 252(4), 689Based on first-principles calculations, we study the noncollinear magnetism in the post-perovskites (pPv) phase of NaNiFinline image and CaRhOinline image crystals. We find that the magnetic canting is ... [more ▼]Based on first-principles calculations, we study the noncollinear magnetism in the post-perovskites (pPv) phase of NaNiFinline image and CaRhOinline image crystals. We find that the magnetic canting is one of the most promising properties of pPv systems, which is allowed by symmetry in all the pPv crystals inline image with a magnetically active B-site. In the pPv phase of NaNiFinline image, which has a inline image antiferromagnetic ground state with a inline image ferromagnetic canting, we obtain a magnetic canting amplitude of about 0.1 inline imageatominline image, which is much larger than in the one obtained in CaRhOinline image (canting amplitude of 0.04 inline image). We also computed the exchange constants (inline image), the single-ion anisotropy (SIA) parameters and the anti-symmetric magnetic coupling described by the Dzyaloshinsky–Moriya (DM) interaction in order to scrutinize the origin of the magnetic canting. We find that the canting in NaNiFinline image is mainly due to the DM interaction, while in CaRhOinline image, both DM and SIA contribute to the magnetic canting. Our calculations thus confirm the noncollinear magnetic ground-state solution experimentally observed in both compounds and the calculated magnetic exchange interactions also confirm the quasi-2D magnetic behavior reported in pPv. [less ▲]Detailed reference viewed: 25 (3 ULg) Noncommutative and nonassociative algebrasKreusch, Marie Conference (2015, March 31)We choose the abelian group ($\bbZ_2^n, +$) where $\bbZ_2 = \bbZ / 2 \bbZ$ and define a $\bbZ_2^n$-graded vector space $E = \bigoplus_{x \in \bbZ_2^n} E_x$ together with a multiplication $\cdot :E ... [more ▼]We choose the abelian group ($\bbZ_2^n, +$) where$\bbZ_2 = \bbZ / 2 \bbZ$and define a$\bbZ_2^n$-graded vector space $E = \bigoplus_{x \in \bbZ_2^n} E_x$ together with a multiplication$ \cdot :E \times E \longrightarrow E$respecting the grading $E_x \cdot E_y \subset E_{x+y} \quad \forall x,y \in \bbZ_2^n.$ This is called a$\bbZ_2^n$-graded algebra. We are interested in particular$\bbZ_2^n$-graded algebras where the product in noncommutative and nonassociative. This talk consists of two parts. The first one is the study of a series of$\bbZ_2^n$-graded algebras of finite dimension ($2^n$) where$n \geq 3$. This series of real noncommutative and nonassociative algebras, denoted$\bbO_{p,q}$($p+q=n$), generalizes the algebra of octonion numbers$\bbO$. This generalization is similar to the one of the algebra of quaternion numbers in Clifford algebras. The first \emph{question} is to classify these algebras up to isomorphisms. The classification table of$\bbO_{p,q}$is quite similar to that of the real Clifford algebras$\cC l_{p,q}$. The second \emph{question} is to find a periodicity between these algebras. The periodicity for the algebras$\bbO_{p,q}$is analogous to the periodicity for the Clifford algebras$\cC l_{p,q}$. In the second part we study$\bbZ_2$-graded algebras ($n=0$, superalgebras'') that can be of infinite dimension. We consider two kind of superalgebras$\cL_{g,N}$and$\cJ_{g,N}$that are noncommutative and nonassociative\footnote{The construction coming from spaces on a compact Riemann surface of genus$g$with$N$punctures}. Nevertheless, these superalgebras link together the classical Lie algebras and the classical commutative and associative algebras. The two last \emph{questions} are can we extend'' the algebras$\cL_{g,N}$and$\cJ_{g,N}$? The first answer is yes (for$\cL_{g,N}$), while the second one is no (for$\cJ_{g,N}$). However, we can extend'' module$\cJ_{g,N}^*\$. [less ▲]Detailed reference viewed: 11 (1 ULg) Nonconsumption of the reinforcer under drug actionFaidherbe, J.; Richelle, Marc ; Schlag, J.in Journal of the Experimental Analysis of Behavior (1962), 5(4), 521-524Detailed reference viewed: 8 (3 ULg) Nonconventional radiographic projections in the equine orthopaedic examinationRichard, Eric ; Alexander, Katein Equine Veterinary Education (2007), 19(10), 551-559Detailed reference viewed: 24 (5 ULg) Noncovalent functionalization of multi-walled carbon nanotubes by pyrene containing polymersPetrov, Petar; Stassin, Fabrice; Pagnoulle, Christophe et alin Chemical Communications (2003), (23), 2904-2905Multi-walled carbon nanotubes (MWNTs) have been solubilized in water and in various organic solvents by noncovalent side-wall functionalization by pyrene containing polymers.Detailed reference viewed: 34 (0 ULg) Nondestructive Detection of Delaminations in Concrete Bridge Decks: A First Experimental StudyVan der Wielen, Audrey ; Courard, Luc ; Nguyen, Frédéric in Proceedings of the XIII International Conference on Ground Penetrating Radar (2010)To detect delaminations in concrete bridge decks, nondestructive techniques (NDT) permit a frequent and large inspection of the slabs without damaging structures. This research was devoted to detect ... [more ▼]To detect delaminations in concrete bridge decks, nondestructive techniques (NDT) permit a frequent and large inspection of the slabs without damaging structures. This research was devoted to detect simulated defects in twelve repaired concrete slabs. These were scanned with high frequency ground penetrating radar (GPR) with the common offset (CO) and common midpoint (CMP) methods. The electromagnetic waves speed was determined from CMPs. A 3D visualization program was also created to display the CO measurements. The visibility of the inserted defects revealed to be dependent on their lateral extension, their thickness and their constitutive material. [less ▲]Detailed reference viewed: 172 (13 ULg) Nondestructive testing by using long wave infrared interferometric techniques with CO2 lasers and microbolometer arraysAlexeenko, Igor; Vandenrijt, Jean-François ; Pedrini, Giancarlo et alin Applied Optics (2013), 52(1), 57-67We describe three different interferometric techniques (electronic speckle pattern interferometry, digital holographic interferometry, digital shearography), using a long wave infrared radiation produced ... [more ▼]We describe three different interferometric techniques (electronic speckle pattern interferometry, digital holographic interferometry, digital shearography), using a long wave infrared radiation produced by a CO2 laser and recording on a microbolometers array. Experimental results showing how these methods can be used for nondestructive testing are presented. Advantages and disadvantages of these approaches are discussed. [less ▲]Detailed reference viewed: 76 (8 ULg) A nondetergent sulfobetaine improves protein unfolding reversibility in microcalorimetric studiesD'Amico, Salvino ; Feller, Georges in Analytical Biochemistry (2009), 385(2), 389-91A nondetergent sulfobetaine (NDSB) was found to improve unfolding reversibility of several proteins by inhibiting heat-induced aggregation. As a consequence, DeltaH(cal)/DeltaH(vH) ratios were also ... [more ▼]A nondetergent sulfobetaine (NDSB) was found to improve unfolding reversibility of several proteins by inhibiting heat-induced aggregation. As a consequence, DeltaH(cal)/DeltaH(vH) ratios were also improved to values close to 1 for a two-state unfolding. NDSB is effective in a wide range of pH values and especially at acidic pH generally used to calculate DeltaC(p) values by the Kirchhoff relation. The sulfobetaine also allows recording protein refolding by protecting the heat-induced unfolded state against aggregation. [less ▲]Detailed reference viewed: 18 (4 ULg) A nondetergent sulfobetaine prevents protein aggregation in microcalorimetric studiesCollins, T.; D'Amico, Salvino ; Georlette, D. et alin Analytical Biochemistry (2006), 352(2), 299-301Detailed reference viewed: 7 (2 ULg) Nondispersive two-electron wave packets in driven heliumSchlagheck, Peter ; Buchleitner, A.in European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics (2003), 22(3), 401-415We provide a detailed quantum treatment of the spectral characteristics and of the dynamics of nondispersive two-electron wave packets along the periodically driven, collinear frozen planet configuration ... [more ▼]We provide a detailed quantum treatment of the spectral characteristics and of the dynamics of nondispersive two-electron wave packets along the periodically driven, collinear frozen planet configuration of helium. These highly correlated, long-lived wave packets arise as a quantum manifestation of regular islands in a mixed classical phase space, which are induced by nonlinear resonances between the external driving and the unperturbed dynamics of the frozen-planet configuration. Particular emphasis is given to the dependence of the ionization rates of the wave packet states on the driving field parameters and on the quantum mechanical phase space resolution, preceded by a comparison of 1D and 3D life times of the unperturbed frozen planet. Furthermore, we study the effect of a superimposed static electric field component, which, on the grounds of classical considerations, is expected to stabilize the real 3D dynamics against large (and possibly ionizing) deviations from collinearity. [less ▲]Detailed reference viewed: 18 (2 ULg) Nondispersive two-electron wave packets in the collinear driven helium atomSchlagheck, Peter ; Buchleitner, A.in Europhysics Letters [=EPL] (1999), 46(1), 24-30Nondispersive two-electron wave packets are found in the Floquet spectrum of the driven, one-dimensional helium atom. In classical phase space, they are anchored to the principal nonlinear resonance ... [more ▼]Nondispersive two-electron wave packets are found in the Floquet spectrum of the driven, one-dimensional helium atom. In classical phase space, they are anchored to the principal nonlinear resonance between the collinear frozen planet orbit and the driving field linearly polarized along the orbit. These novel, highly correlated eigenstates of the driven three-body Coulomb problem, exhibit lifetimes of the order of 10(3)...10(7) periods of the driving field, with strong fluctuations reminiscent of chaos-assisted tunneling. [less ▲]Detailed reference viewed: 4 (0 ULg) NONEQUILIBRIUM EFFECTS IN THE THERMAL-CONDUCTIVITY OF BI-BASED HIGH-TEMPERATURE SUPERCONDUCTORSBougrine, Hassan ; SERGEENKOV, S.; Ausloos, Marcel et alin Solid State Communications (1994), 91(7), 571-575Thermal conductivity of two Bi-based high temperature superconducting ceramics, 2212 and 2223, with a markedly different microstructure have been examined. A pulse technique has been used. Depending on ... [more ▼]Thermal conductivity of two Bi-based high temperature superconducting ceramics, 2212 and 2223, with a markedly different microstructure have been examined. A pulse technique has been used. Depending on the heating pulse duration, the more weak-links-containing 2223 sample shows either equilibrium or nonequilibrium behavior. The temperature dependence of the thermal conductivity between 110 K and 180 K is found to obey the Arrhenius law. The experimental observations are interpreted as a thermally activated heat flux motion through the polycrystalline grain boundaries with an energy barrier of nearly 10meV. It is likely due to a phase slip mechanism. An extra relaxation process due to the pore content/structure is thus emphasized in such regimes. [less ▲]Detailed reference viewed: 27 (4 ULg) Nonequilibrium processes in the planetary and cometary atmospheres : theory and applicationsMarov, M.Ya.; Shematovich, V. I.; Bisikalo, D. V. et alBook published by Kluwer Academic Publ (1997)Detailed reference viewed: 9 (1 ULg) Nonexponential decay of Bose-Einstein condensates: a numerical study based on the complex scaling methodSchlagheck, Peter ; Wimberger, S.in Applied Physics B : Lasers & Optics (2007), 86(3), 385-390We study the decay dynamics of an interacting Bose-Einstein condensate in the presence of a metastable trapping potential from which the condensate can escape via tunneling through finite barriers. The ... [more ▼]We study the decay dynamics of an interacting Bose-Einstein condensate in the presence of a metastable trapping potential from which the condensate can escape via tunneling through finite barriers. The time-dependent decay process is reproduced by means of the instantaneous decay rates of the condensate at a given population of the quasi-bound state, which are calculated with the method of complex scaling. Both for the case of a double-barrier potential as well as for the case of a tilted periodic potential, we find pronounced deviations from a monoexponential decay behavior, which would generally be expected in the absence of the atom-atom interaction. [less ▲]Detailed reference viewed: 12 (0 ULg) Nonfibrous mineralogical analysis of bronchoalveolar lavage fluid from blast-furnace workers.CORHAY, Jean-Louis ; Bury, Thierry ; Delavignette, Jean-Paul et alin Archives of Environmental Health (1995), 50(4), 312-9Steelworkers are exposed to many pollutants, and they are at risk for developing lung cancer. We demonstrated previously that steelworkers may be subject to an occult exposure to amphiboles in the plant ... [more ▼]Steelworkers are exposed to many pollutants, and they are at risk for developing lung cancer. We demonstrated previously that steelworkers may be subject to an occult exposure to amphiboles in the plant environment. In the current study, we further analyzed bronchoalveolar lavage fluid of steelworkers by measuring intramacrophagic trace-metal content and nonfibrous mineral particles, using the particle-induced x-ray emission method and electron microscopy, respectively. Forty-seven blast-furnace workers and 45 healthy white-collar workers volunteered for this study. Significantly increased levels of iron, titanium, zinc, and bromine were found in the steelworkers, and levels of lead, chromium, arsenic, and strontium tended to increase in the macrophages and bronchoalveolar lavage fluid of the steelworkers. Nonfibrous particles, including illite, kaolinite, talc, chlorite, amorphous silica, quartz, iron (compounds), and titanium hydroxide, were found in both groups, but the particle number per ml bronchoalveolar lavage fluid (particularly iron hydroxides and silicates) was more pronounced in blast-furnace workers. These elements and particles may act synergistically with other occupational carcinogens and cigarette smoke, the result of which may be an increased incidence of lung cancer in the ironsteel industry. [less ▲]Detailed reference viewed: 14 (2 ULg) Nông nghiệp, nông thôn Việt Nam : từ chính sách đến thực tiễnMai, Lan Phuong ; Peemans, Jean-Philippe; Nguyen Mau, Dung et alin Trường đại học nông nghiêp Hà Nội (Université d'Agriculture de Hanoi, Faculté d'Economie et de Développement rural) (Ed.) Nông nghiệp, nông thôn Việt Nam : từ chính sách đển thực tiễn (2012)Detailed reference viewed: 29 (2 ULg) Nonimaging achromatic shaped Fresnel lenses for ultrahigh solar concentrationLanguy, Fabian ; Habraken, Serge in Optics Letters (2013), 38(10), 1730-1732The maximum concentration ratio achievable with a solar concentrator made of a single refractive primary optics is much more limited by the chromatic aberration than by any other aberration. Therefore ... [more ▼]The maximum concentration ratio achievable with a solar concentrator made of a single refractive primary optics is much more limited by the chromatic aberration than by any other aberration. Therefore achromatic doublets made with poly(methyl methacrylate) and polycarbonate are of great interest to enhance the concentration ratio and to achieve a spectrally uniform flux on the receiver. In this Letter, shaped achromatic Fresnel lenses are investigated. One lossless design is of high interest since it provides spectrally and spatially uniform flux without being affected by soiling problems. With this design an optical concentration ratio of about 8500× can be achieved. [less ▲]Detailed reference viewed: 41 (13 ULg) Noninfectious dermatoses of pregnancyQUATRESOOZ, Pascale ; PIERARD-FRANCHIMONT, Claudine ; PIERARD, Gérald in Therapeutique dermatologique (2007)Detailed reference viewed: 4 (1 ULg)