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1

Caseau, P. „ETUDE THEORIQUE DE L'EXPLOITATION DES ENREGISTREMENTS DE HOULE“. Coastal Engineering Proceedings 1, Nr. 7 (29.01.2011): 8. http://dx.doi.org/10.9753/icce.v7.8.

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L'e'tude de la houle en un point, c'est-a-dire 1!exploitation d'un enregistrement de houle, consiste a obtenir, a. partir de cet enregistrement, le plus de renseignements possible sur le "spectre" de la houle. Nous excluons le cas ou la donnee -|-(t) se presente sous la forme d'un tableau chiffre' ou d'un courant electrique. Ces deux representations ont en conmun la proprie'te que 1' addition de deux fonctions et l1 operation 4, / f(t) oU y sont faciles a realiser. L*exploitation passera done naturellement par la fonction de correlation YC*-) = =T / TW|(trt) 1ui es^ "tres facile a obteni] Au contraire, si 1'enregistrement se pre'sente sous forme de courbes sur film ou sur papier, aucune de ces deux operations n'est facile a realiser, ce qui enleve a *Jf(f) beaucoup de son intere*t. Pour 1' exploitation des enregistrements effectues par 1'enregistreur autonome de Chatou, qui consistent en des courbes sur film de 35 mm, une methode simplifiee est actuellement utilise'e ji5_7° Cette methode ne donne cependant pas tous les renseignements que l'on voudrait, et elle est moins rapide d'emploi qu'il ne serait necessaire pour permettre le depouillement des tres nombreux enregistrements effectues avec les divers appareils en service. En modifiant un peu la methode, M„ Kowalski, de l*Instytut Morski, a Gdansk, en Pologne, a pu la mecaniser et la rendre plus pratique, sans cependant augmenter le nombre des renseignements obtenus. En s'inspirant du procede utilis^ par M, Kowalski, M. Valembois a imagine le procede que 1ious etudions ici. Ce proce'de consiste a faire defiler le film devant un appareil qui compti au moyen de cellules photoelectriques, le nombre de points dsintersection de . courbe u = ^(t) avec les droites u- etc , pour diverses valeurs de la constanti Mo Larras a propose", au lieu de coTiipter des nombres de points d1 intersection, de totaliser des intervalles horizontaux (fig. t). L1etude mathematique de ces procedes conduit naturellement a considerer les "distributions" associees a ^(t), a voir leurs relations avec le spectre, et a selectionner celles qui sont le plus faciles a obtenir et qui donnent le plus de renseignements sur celui-ci. Apres avoir passe en revue les hypotheses mathematiques et les resultats ne'eessaires au calcul, nous aborderons done l'^tude de ces distributions, et nous indiquerons quelques-unes de celles que l'on peut utiliser.
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2

Cholodenko, Alan. „The Crypt, the Haunted House, of Cinema“. Cultural Studies Review 10, Nr. 2 (12.08.2013): 99–113. http://dx.doi.org/10.5130/csr.v10i2.3474.

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As we know, it is a cliché that what we see on the screen is ghosts, phantoms, spectres. What I propose in this essay is that that cliché be taken seriously—do I dare say it, ‘deadly’ seriously—be given rigorous analytic attention for its relevance to the thinking of cinema and its senses, while at the same time acknowledging that even the finest account must come face to face with the ‘fact’ that there is no ghostbuster, not even the analyst/theorist of cinema, not even the Marxist analyst/theorist of cinema, so powerful as to master, defeat and eradicate the spectre of cinema. It is a key premise of this essay that not only is the spectre a privileged subject of film but that it would be the ur figure of cinema, if cinema could have an ur figure, if the spectre could be an ur figure, a figure not only operating at every second at every level in every aspect of every film but also at the level of the cinematic, or rather animatic, apparatus of film, hence at the level of film ‘as such’.
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3

Nowak, M. A. „Leveraging high-resolution spectra to understand black hole spectra“. Astronomische Nachrichten 338, Nr. 2-3 (März 2017): 227–33. http://dx.doi.org/10.1002/asna.201713335.

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4

Ali, Mohsin, und Haewoon Nam. „Optimization of Spectrum Hole Utilization in Rayleigh Faded Cognitive Radio Networks“. International Journal of Signal Processing Systems 6, Nr. 1 (März 2018): 1–5. http://dx.doi.org/10.18178/ijsps.6.1.1-5.

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5

Lee, In‐Ja, John M. Hayes und Gerald J. Small. „Hole and antihole profiles in nonphotochemical hole‐burned spectra“. Journal of Chemical Physics 91, Nr. 6 (15.09.1989): 3463–69. http://dx.doi.org/10.1063/1.456875.

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6

You, Bei, und Xinwu Cao. „The black hole spins of quasars“. Proceedings of the International Astronomical Union 10, S312 (August 2014): 143–44. http://dx.doi.org/10.1017/s1743921315007747.

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AbstractWe present the estimates of the black hole spins of five quasars. The peaks of the spectra of the accretion discs surrounding massive black holes in quasars are in the far-UV or soft X-ray band, which are usually not observed. However, in the disc corona model, the soft photons from the disc are Comptonized to high energy in the hot corona, and the hard X-ray spectra (luminosity and spectral shape) contain the information of the incident spectra from the disc. The values of black hole spin parameter a are inferred from the spectral fitting, which spread over a large range, ~ −0.94 to 0.998.
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7

Lynch, Jared. „Resurfacing Specters in the House of Media“. Digital Literature Review 1 (06.01.2014): 51–59. http://dx.doi.org/10.33043/dlr.1.0.51-59.

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This article explores an aspect of haunting and terror that surfaced after the Columbine schoolshooting, a specter crafted and refined through the journalistic practice of framing. This ghostinhabits the house of media, where it still continues to surface. American Horror Story: Murder House presents an incarnation of this ghost, opening a new way of thinking about bothjournalistic framing and the specter of mass violence.
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8

Eilers, Anna–Christina, David W. Hogg, Bernhard Schölkopf, Daniel Foreman-Mackey, Frederick B. Davies und Jan–Torge Schindler. „A Generative Model for Quasar Spectra“. Astrophysical Journal 938, Nr. 1 (01.10.2022): 17. http://dx.doi.org/10.3847/1538-4357/ac8ead.

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Abstract We build a multi-output generative model for quasar spectra and the properties of their black hole engines, based on a Gaussian process latent-variable model. This model treats every quasar as a vector of latent properties such that the spectrum and all physical properties of the quasar are associated with non-linear functions of those latent parameters; the Gaussian process kernel functions define priors on the function space. Our generative model is trained with a justifiable likelihood function that allows us to treat heteroscedastic noise and missing data correctly, which is crucial for all astrophysical applications. It can simultaneously predict unobserved spectral regions and the physical properties of quasars in held-out test data. We apply the model to rest-frame ultraviolet and optical quasar spectra for which precise black hole masses (based on reverberation-mapping measurements) are available. Unlike reverberation-mapping studies that require multi-epoch data, our model predicts black hole masses from single-epoch spectra—even with limited spectral coverage. We demonstrate the capabilities of the model by predicting black hole masses and unobserved spectral regions. We find that we predict black hole masses at close to the best possible accuracy.
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9

Kwofie, Francis, Nuwan Undugodage D. Perera, Kaushalya S. Dahal, George P. Affadu-Danful, Koichi Nishikida und Barry K. Lavine. „Transmission Infrared Microscopy and Machine Learning Applied to the Forensic Examination of Original Automotive Paint“. Applied Spectroscopy 76, Nr. 1 (17.12.2021): 118–31. http://dx.doi.org/10.1177/00037028211057574.

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Alternate least squares (ALS) reconstructions of the infrared (IR) spectra of the individual layers from original automotive paint were analyzed using machine learning methods to improve both the accuracy and speed of a forensic automotive paint examination. Twenty-six original equipment manufacturer (OEM) paints from vehicles sold in North America between 2000 and 2006 served as a test bed to validate the ALS procedure developed in a previous study for the spectral reconstruction of each layer from IR line maps of cross-sectioned OEM paint samples. An examination of the IR spectra from an in-house library (collected with a high-pressure transmission diamond cell) and the ALS reconstructed IR spectra of the same paint samples (obtained at ambient pressure using an IR transmission microscope equipped with a BaF2 cell) showed large peak shifts (approximately 10 cm−1) with some vibrational modes in many samples comprising the cohort. These peak shifts are attributed to differences in the residual polarization of the IR beam of the transmission IR microscope and the IR spectrometer used to collect the in-house IR spectral library. To solve the problem of frequency shifts encountered with some vibrational modes, IR spectra from the in-house spectral library and the IR microscope were transformed using a correction algorithm previously developed by our laboratory to simulate ATR spectra collected on an iS-50 FT-IR spectrometer. Applying this correction algorithm to both the ALS reconstructed spectra and in-house IR library spectra, the large peak shifts previously encountered with some vibrational modes were successfully mitigated. Using machine learning methods to identify the manufacturer and the assembly plant of the vehicle from which the OEM paint sample originated, each of the twenty-six cross-sectioned automotive paint samples was correctly classified as to the “make” and model of the vehicle and was also matched to the correct paint sample in the in-house IR spectral library.
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10

Sumitomo, Naoko, Hideki Saito, Jun Fukue und Kenya Watarai. „Relativistic Spectra of Hot Black-Hole Winds“. Publications of the Astronomical Society of Japan 61, Nr. 6 (25.12.2009): 1281–86. http://dx.doi.org/10.1093/pasj/61.6.1281.

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11

Ankudinov, A. L., A. I. Nesvizhskii und J. J. Rehr. „Hole counts from X-ray absorption spectra“. Journal of Synchrotron Radiation 8, Nr. 2 (01.03.2001): 92–95. http://dx.doi.org/10.1107/s0909049500016435.

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12

Belloni, T. „High-energy spectra from black-hole candidates“. Nuclear Physics B - Proceedings Supplements 132 (Juni 2004): 337–45. http://dx.doi.org/10.1016/j.nuclphysbps.2004.04.061.

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13

Pecháček, Tomáš, Michal Dovčiak und Vladimír Karas. „Power spectra from spotted accretion discs“. Proceedings of the International Astronomical Union 2, S238 (August 2006): 425–26. http://dx.doi.org/10.1017/s1743921307005777.

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AbstractSome aspects of power-spectral densities (PSD) of active galactic nuclei are similar to those of galactic black hole X-ray binary systems (McHardy et al. 2005). The signal originates near a black hole and its modulation by general-relativistic effects should be taken into account (Życki & Nedźwiecki 2005). We modified the previous calculations of these effects, assuming a model of spots which occur on the disc surface and decay with a certain lifetime.
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14

WEN, CONG-KAO, und HUAN-XIONG YANG. „QCD4 GLUEBALL MASSES FROM AdS6 BLACK HOLE DESCRIPTION“. Modern Physics Letters A 20, Nr. 13 (30.04.2005): 997–1003. http://dx.doi.org/10.1142/s0217732305016245.

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By using the generalized version of gauge/gravity correspondence, we study the mass spectra of several typical QCD4 glueballs in the framework of AdS 6 black hole metric of Einstein gravity theory. The obtained glueball mass spectra are numerically in agreement with those from the AdS 7× S 4 black hole metric of the 11-dimensional supergravity.
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15

Życki, P. T., M. A. Sobolewska und A. Niedźwiecki. „Energy spectra of X-ray quasi-periodic oscillations in accreting black hole binaries“. Proceedings of the International Astronomical Union 2, S238 (August 2006): 13–18. http://dx.doi.org/10.1017/s1743921307004607.

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AbstractWe investigate the energy dependencies of X-ray quasi-periodic oscillations in black hole X-ray binaries. We analyze RXTE data on both the low- and high-frequency QPO. We construct the low-f QPO energy spectra, and demonstrate that they do not contain the thermal disk component, even though the latter is present in the time averaged spectra. The disk thus does not seem to participate in the oscillations. Moreover the QPO spectra are harder than the time averaged spectra when the latter are soft, which can be modeled as a result of modulations occurring in the hot plasma. The QPO spectra are softer than the time averaged spectra when the latter are hard. The absence of the disk component in the QPO spectra is true also for the high-frequency (hecto-Hz) QPO observed in black hole binaries. We compute the QPO spectra expected from the model of disk resonances.
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16

Kawai, Jun. „Chemical State Analysis by Soft X-ray Emission Spectra with Molecular-Orbital Calculations“. Advances in X-ray Analysis 34 (1990): 91–103. http://dx.doi.org/10.1154/s0376030800014361.

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This paper deals with soft X-ray spectra of compounds which have one or more spectator hole(s) in the valence orbitals. The aim is to give a simple picture of the complicated chemical effects and to describe implications of the chemical effects to know the chemical state from the complicated spectra of materials. The first example of the system which has a spectator hole in the valence orbital is the intensity modifications of the shake-off satellites (KM-→LM) in chlorine Kα spectra. The second example of the system which has spectator holes in the valence orbitals is the multiplet structure of Lα spectra of the transition-metal compounds. It is described that the chemical effects of these two systems are clearly interpreted by the avoided crossing [1] of the molecular orbitals, one of which has a localized hole. We also describe the systems which have no spectator holes. The interpretation of the X-ray spectra of these systems are easy by a molecular-orbital calculation at the ground state.
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17

Hughes, Joseph L., Barry J. Prince, Sindra Peterson Årsköld, Paul J. Smith, Ron J. Pace, Hans Riesen und Elmars Krausz. „The Native Reaction Centre of Photosystem II: A New Paradigm for P680“. Australian Journal of Chemistry 57, Nr. 12 (2004): 1179. http://dx.doi.org/10.1071/ch04140.

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Low-temperature spectra of fully active (oxygen-evolving) Photosystem II (PSII) cores prepared from spinach exhibit well developed structure. Spectra of isolated sub-fragments of PSII cores establish that the native reaction centre is better structured and red-shifted compared to the isolated reaction centre. Laser illumination of PSII cores leads to efficient and deep spectral hole-burning. Measurements of homogeneous hole-widths establish excited-state lifetimes in the 40–300 ps range. The high hole-burning efficiency is attributed to charge separation of P680 in native PSII that follows reaction-centre excitation via ‘slow transfer’ states in the inner light-harvesting assemblies CP43 and CP47. The ‘slow transfer’ state in CP47 and that in CP43 can be distinguished in the hole-burning action spectrum and high-resolution hole-burning spectra. An important observation is that 685–700 nm illumination gives rise to efficient P680 charge separation, as established by QA− formation. This leads to a new paradigm for P680. The charge-separating state has surprisingly weak absorption and extends to 700 nm.
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18

Винниченко, М. Я., И. С. Махов, Н. Ю. Харин, С. В. Граф, В. Ю. Паневин, И. В. Седова, С. В. Сорокин und Д. А. Фирсов. „Фотопроводимость и поглощение инфракрасного излучения в квантовых ямах p-GaAs/AlGaAs“. Физика и техника полупроводников 55, Nr. 8 (2021): 629. http://dx.doi.org/10.21883/ftp.2021.08.51127.03.

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The spectra of low-temperature impurity-assisted far and mid-infrared photoconductivity and absorption in nanostructure with multiple GaAs/AlGaAs quantum wells doped with acceptors are investigated. The experimentally obtained absorption and photoconductivity spectra correlate well with each other. According to the hole and acceptor state energy spectrum calculations the spectral features related to the optical hole transitions from the ground acceptor state to the delocalized states of valence subbands, to the excited acceptor states and to the delocalized states above the quantum well (photoionization) are identified in the absorption and photoconductivity spectra.
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19

Duscher, Gerd, Ryszard Buczko, Stephen J. Pennycook und Sokrates T. Pantelides. „Core Hole Effects on Eels Near-Edge Fine Structure in Semiconductors and Insulators“. Microscopy and Microanalysis 7, S2 (August 2001): 1174–75. http://dx.doi.org/10.1017/s1431927600031949.

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Electron energy-loss spectroscopy (EELS) is now a standard tool to investigate the local chemistry and bonding of defects in solids. to first order, the energy thresholds of the ionization edges in EELS spectra are determined by the identity of the element [1], while small shifts are induced by different bonding coordination and charge states [2]. The shapes of ionization edges in EELS spectra reflect the local bonding environments. We present first-principles calculations that incorporate electron-hole interactions and are in excellent agreement with experimental data obtained with X-ray absorption spectroscopy (XAS) and EELS. The superior energy resolution in XAS spectra and the new calculations make a compelling case that core-hole effects dominate core-excitation edges in all of the materials investigated: Si, SiO2, MgO, SrTiO3 and SiC. These materials differ widely in their dielectric constants leading to the conclusion that core-hole effects dominate all core-electron excitation spectra in semiconductors and insulators.
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20

KOTANI, A. „CORE-HOLE EFFECT IN THE Ce L3 X-RAY ABSORPTION SPECTRA OF CeO2 AND CeFe2: NEW EXAMINATION BY USING RESONANT X-RAY EMISSION SPECTROSCOPY“. Modern Physics Letters B 27, Nr. 16 (06.06.2013): 1330012. http://dx.doi.org/10.1142/s0217984913300123.

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We consider two different resonant X-ray emission spectra for Ce compounds: Ce 3d to 2p X-ray emission (denoted by 3d-RXES) and valence to 2p X-ray emission (v-RXES), both of which follow the Ce 2p to 5d resonant excitation. We propose that the comparison of the 3d- and v-RXES spectra is a new powerful method of directly detecting the core-hole effect in the final state of Ce L 3 X-ray absorption spectra (XAS). We applied this method to recent experimental RXES spectra for CeO 2 and CeFe 2, and showed unambiguously that the core-hole effect should be essential in the XAS of both materials. This result is confirmed by theoretical calculations, which reproduce well the experimental RXES and XAS spectra. We conclude that the ground state of CeO 2 is in the mixed state of 4f0 and [Formula: see text] configurations, where [Formula: see text] is a ligand hole, instead of a pure 4f0 configuration which was proposed recently by first-principles energy band calculations. Also, we conclude that the double peaks observed in L 3 XAS of CeFe 2 are caused by the 4f0 and 4f1 configurations, which are mixed in the ground state but separated in energy by the large core-hole potential in the final state of XAS.
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21

Romanova, E. O. „Коллекция вечных ценностей: Дом-музей З.К. Церетели в Переделкине“. Iskusstvo Evrazii [The Art of Eurasia], Nr. 4(19) (30.12.2020): 176–85. http://dx.doi.org/10.46748/arteuras.2020.04.015.

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The article is focused on Zurab Tsereteli’s House-Museum in Peredelkino near Moscow. Serving as a continuation of the museums previously founded by the artist in Georgia and Russia, the collection of the House-Museum presents to the fullest possible extent a multifaceted specter of creative search in the artist’s experimental space. At the same time, the main feature of the museum is that it represents wholly the realization of Tsereteli’s live program aimed at transfiguration of a man by the means of art. Статья посвящена Дому-музею Зураба Церетели в подмосковном поселке Переделкино. Выступая продолжением музеев, созданных художником ранее в Грузии и России, коллекция Дома-музея наиболее полно представляет многогранный спектр творческих поисков автора в экспериментальном пространстве. Однако главным в этом музее является то, что он представляет собой во всей полноте реализацию жизненной программы З.К. Церетели, цель которой — преображение человека и мира средствами искусства.
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22

Sylwester, Janusz, Stefan Płocieniak, Jarosław Bakała, Żaneta Szaforz, Marek Stȩślicki, Daniel Ścisłowski, Mirosław Kowaliński, Piotr Podgórski, Jose Hernandez und Sergey Shestov. „SolpeX: the soft X-ray flare polarimeter–spectrometer for the ISS“. Proceedings of the International Astronomical Union 10, S305 (Dezember 2014): 114–20. http://dx.doi.org/10.1017/s1743921315004627.

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AbstractWe present the innovative soft X-ray spectro-polarimeter, SolpeX. This instrument consists of three functionally independent blocks. They are to be included into the Russian instrument KORTES, to be mounted onboard the ISS. The three SolpeX units are: a simple pin-hole X-ray spectral imager, a polarimeter, and a fast-rotating drum multiple-flat-crystal Bragg spectrometer. Such a combination of measuring blocks will offer a new opportunity to reliably measure possible X-ray polarization and spectra of solar flares, in particular during the impulsive phase. Polarized Bremsstrahlung and line emission due to the presence of directed particle beams will be detected, and measurements of the velocities of evaporated hot plasma will be made. In this paper we discuss the details of the construction of the SolpeX units. The delivery of KORTES with SolpeX to the ISS is expected to happen in 2017/2018.
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23

Bargueño, P., E. Contreras und J. M. Peña. „Spectral Geometry of Black Holes in 4D Gauged Supergravity“. Universe 7, Nr. 4 (25.03.2021): 78. http://dx.doi.org/10.3390/universe7040078.

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In this work we show that the area of the event horizon of the Chong–Cvetic–Lu–Pope black hole can be reconstructed in terms of the spectra of the Laplacian on the event horizon. This result, which extends previous works regarding the de Sitter–Kerr–Newman case, points towards a possible description of the black hole degrees of freedom in terms of the spectra of canonical operators defined on the event horizon.
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24

Ashurov, M. Kh. „INFLUENCE OF IONIZING RADIATION ON THE DIFFUSE REFLECTION SPECTRA OF STEATITE CERAMICS SNC“. Eurasian Physical Technical Journal 19, Nr. 4 (26.12.2022): 22–27. http://dx.doi.org/10.31489/2022no4/22-27.

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In this article, the radiation defects induced in steatite ceramics type- SNC- irradiated with high doses of gamma-rays of 60Co source and mixed reactor nо-gamma-irradiation were studied using optical spectroscopy, i.e. diffuse reflection method. An analysis of the results of the diffuse reflection spectra showed that some structural defects are formed under gamma-irradiation. These are oxygen vacancies, unbound oxygen atoms, and E1 -centers (a three-coordinated silicon atom that has captured an electron) in the ultraviolet region of the spectrum. In the visible region of the spectrum, the types of hole centers are different. After decomposing the spectrum of the visible region into Gaussians, it was found that in this region of the spectrum, with no –gamma- irradiation of the reactor, in comparison with gamma-irradiation, various types of hole centers - (O-Me, Me-metal) are additionally formed. The efficiency of creating these structural defects in nо-gamma-reactor irradiated samples was higher compared to gamma irradiated samples.
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25

Hazarika, Chittaranjan, R. Mahanta R. Mahanta und G. D. Baruah G. D. Baruah. „On the Nature of Laser Induced Fluorescence Spectrum of a Bore- Hole Sample of Coal“. Indian Journal of Applied Research 3, Nr. 3 (01.10.2011): 31. http://dx.doi.org/10.15373/2249555x/mar2013/11.

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26

Finazzi, S., und R. Parentani. „On the robustness of acoustic black hole spectra“. Journal of Physics: Conference Series 314 (22.09.2011): 012030. http://dx.doi.org/10.1088/1742-6596/314/1/012030.

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27

Lipatov, E. I., D. E. Genin und V. F. Tarasenko. „Optical spectra and electron–Hole liquid in diamond“. Optics and Spectroscopy 119, Nr. 6 (Dezember 2015): 918–23. http://dx.doi.org/10.1134/s0030400x15120164.

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28

Burdov, V. A. „Electron and hole spectra of silicon quantum dots“. Journal of Experimental and Theoretical Physics 94, Nr. 2 (Februar 2002): 411–18. http://dx.doi.org/10.1134/1.1458492.

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29

Gradl, G., J. Zollfrank, W. Breinl und J. Friedrich. „Color effects in pressure‐tuned hole‐burned spectra“. Journal of Chemical Physics 94, Nr. 12 (15.06.1991): 7619–24. http://dx.doi.org/10.1063/1.460148.

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30

Tkach, М., V. Holovatsky, О. Voitsekhivska, М. Мikhalyova und R. Fartushynsky. „Electron and hole spectra in complicated spherical nanoheterosystems“. Journal of Physical Studies 4, Nr. 3 (2000): 342–49. http://dx.doi.org/10.30970/jps.04.342.

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31

Smirnov, A. M., V. N. Mantsevich, D. S. Smirnov, A. D. Golinskaya, M. V. Kozlova, B. M. Saidzhonov, V. S. Dneprovskii und R. B. Vasiliev. „Heavy-hole and light-hole excitons in nonlinear absorption spectra of colloidal nanoplatelets“. Solid State Communications 299 (September 2019): 113651. http://dx.doi.org/10.1016/j.ssc.2019.113651.

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32

Wang, Xiaorong, und Christopher G. Robertson. „Memory of Prior Dynamic Strain History in Filled Rubbers“. Rubber Chemistry and Technology 83, Nr. 2 (01.06.2010): 149–59. http://dx.doi.org/10.5254/1.3548271.

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Abstract We recently discovered that particle-reinforced rubbers after being sheared (or aged) in oscillation at a frequency ƒa at a small strain γa (e.g., ∼1% strain) for time ta can often display a spectrum hole or drop in their dissipation spectra. The location of the hole depends on the aging strain amplitude γa. The depth of this hole is influenced by both the oscillatory aging frequency ƒa and the aging duration ta, and follows a simple power relationship of the product of ƒa and ta. Sequential shear at two strains reveals that when γa1>γa2 the resulting dynamic spectra appear to be a combination of that aged at γa1 and γa2, whereas for γa1>γa2, the resulting dynamic spectra only reflect the characteristic hole burning of the second strain after holding at γa2. This new memory effect occurs at very small strains in filled elastomers and involves material stiffening during the strain aging; both of those features are quite different from the Mullins effect. Also, this new memory is found to last for more than 10 days without any noticeable sign of disappearing.
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33

Petrovic, Jovana, Petar Matavulj, Qi Difei und Sandra Selmic. „Charge carrier recombination in the ITO/PEDOT:PSS/MEH-PPV/Al photodetector“. Chemical Industry 63, Nr. 3 (2009): 177–81. http://dx.doi.org/10.2298/hemind0903177p.

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In this paper we investigate charge carrier recombination processes in polymer based photodetector ITO/PEDOT:PSS/MEH-PPV/Al. The major carriers are the hole polarons created by the photoexcitation in the active MEH-PPV film. The model used in this paper is based on the continuity equation and drift-diffusion equation for hole polarons. We assume the Poole-Frenkel expression for field dependence of the hole polaron mobility. The internal quantum efficiency dependence on incident photon flux density, incident light wavelength and applied electric field is included in the model. The simulated photocurrent density spectra for two different, assumed, recombination mechanisms, linear (monomolecular) and square (bimolecular) is compared with our experimental results. The bimolecular recombination mechanism applied in our model is assumed to be of Langevin type. The agreement between the measured and the calculated data unambiguously indicate that the hole polaron recombination mechanism in the MEH-PPV film is bimolecular with bimolecular rate constant depending on the external electric field. For the established recombination mechanism the theoretical prediction of the photocurrent density spectra shows excellent agreement with the measured spectra in wide range of inverse bias voltages (from 0 to -8 V).
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34

Gómez-Velásquez, Juan C., Natalia Loaiza-Díaz, Gilma Norela Hernández, Nelson Lima und Ana C. Mesa-Arango. „Development and Validation of an In-House Library for Filamentous Fungi Identification by MALDI-TOF MS in a Clinical Laboratory in Medellin (Colombia)“. Microorganisms 8, Nr. 9 (06.09.2020): 1362. http://dx.doi.org/10.3390/microorganisms8091362.

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Identification of filamentous fungi by conventional phenotypic methods are time-consuming, and a correct identification at the species level is prone to errors. Therefore, a more accurate and faster time-to-results, and cost-effective technique, is required, such as the Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS). In this study, we describe the development of an in-house spectra library for the identification of filamentous fungi frequently isolated from patients with infections. An in-house spectra library was constructed using 14 reference strains grown in solid medium. Clinical isolates were identified either by the in-house spectra library or the Biotyper commercial library from Bruker Daltonics. Fungal identification was carried following the Biotyper’s established scores: ≤1.699: not reliably identified (NRI); 1.700–1.999: genus-level; ≥2.000: species-level. Clinical isolates were identified, with the in-house library, at species- and genus-level at 88.70% (55) and 3.22% (2), respectively. While 4.80% (3) was NRI and 3.22% (2) was discrepant concerning sequencing. On the contrary, identification up to species and genus-level with the commercial library was 44.44% (16) and 22.22% (8), respectively. NRI and the discrepancy was 30.55% (11) and 2.77% (1), respectively. For the reaming 26 isolates, 16 from Neoscytalidium dimidiatum and 10 from Sporothrix spp., respectively, the absence of spectrum and the specific spectra within the Sporothrix complex in the commercial library resulted in the inability to obtain an identification. In conclusion, the current results advocate the importance that each clinical microbiological laboratory needs to develop an ad hoc library associated with the MALDI-TOF MS fungal identification to overcome the limitations of the available commercial libraries.
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Lemes, Monike Alves, Giovanna Prezoto Garcia, Beatriz Laperuta do Carmo, Beatriz Azevedo Santiago, Daniel De Bortoli Teixeira, Francisco Agostinho Junior und Paula Cristina Cola. „Comportamento alimentar de crianças com transtorno do espectro autista“. Jornal Brasileiro de Psiquiatria 72, Nr. 3 (2023): 136–42. http://dx.doi.org/10.1590/0047-2085000000414.

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RESUMO Objetivo: O objetivo deste estudo foi analisar o comportamento alimentar de crianças e adolescentes com transtorno do espectro autista. Métodos: Participaram deste estudo 21 crianças e adolescentes com TEA, na faixa etária de 2 a 14 anos de idade, de ambos os sexos. Foi aplicado um questionário sobre o comportamento alimentar com os 21 pais e/ou responsáveis das crianças. Esse instrumento é composto por 53 questões, distribuídas nas seguintes categorias: Motricidade na mastigação; Seletividade alimentar; Aspectos comportamentais; Sintomas gastrointestinais; Sensibilidade sensorial e Habilidades nas refeições. Resultados: A análise dos dados obtidos revela que as crianças com TEA apresentaram maiores alterações no comportamento alimentar nas categorias Seletividade alimentar (34,4%), Aspectos comportamentais (27,1%) e Motricidade na mastigação (21,9%). E houve correlação entre a categoria Motricidade na mastigação com todas as outras categorias. Houve também correlação entre seletividade alimentar com aspectos comportamentais e aspectos comportamentais com sensibilidade sensorial e habilidades nas refeições. Conclusão: Portanto, é possível observar que, no comportamento alimentar de crianças e adolescentes com TEA, há uma tendência a seletividade alimentar, comportamentos habituais durante as refeições e dificuldades motoras no que se refere à mastigação e à ingestão dos alimentos.
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Nowak, Michael A., und Robert V. Wagoner. „Variability of Black Hole Accretion Disks“. Symposium - International Astronomical Union 159 (1994): 487. http://dx.doi.org/10.1017/s0074180900176636.

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We consider two forms of variability in black hole accretion disks: harmonically oscillating modes trapped near the disk inner edge, and noisy fluctuations throughout the entire disk. We apply the former to AGN disks, and the latter to the X-ray power spectra of GX339-4.
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37

Maeda, Hideki. „Throat quantization of the Schwarzschild-Tangherlini(-AdS) black hole“. EPJ Web of Conferences 168 (2018): 03009. http://dx.doi.org/10.1051/epjconf/201816803009.

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By the throat quantization pioneered by Louko and Mäkelä, we derive the mass and area/entropy spectra for the Schwarzschild-Tangherlini-type asymptotically flat or AdS vacuum black hole in arbitrary dimensions. Using the WKB approximation for black holes with large mass, we show that area/entropy is equally spaced for asymptotically flat black holes, while mass is equally spaced for asymptotically AdS black holes. Exact spectra can be obtained for toroidal AdS black holes in arbitrary dimensions including the three-dimensional BTZ black hole.
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38

KWON, YONGJOON, und SOONKEON NAM. „QUANTIZATION OF ENTROPY SPECTRA OF BLACK HOLES“. International Journal of Modern Physics D 22, Nr. 02 (Februar 2013): 1330001. http://dx.doi.org/10.1142/s0218271813300012.

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From the quasinormal modes (QNM) of black holes, we obtain the quantizations of the entropy and horizon area of black holes via Bohr–Sommerfeld quantization, based on Bohr's correspondence principle. For this, we identify the appropriate action variable of the classical system corresponding to a black hole. By considering the BTZ black holes in topologically massive gravity as well as Einstein gravity, it is found that the spectra of not the horizon areas but the entropies of black holes are equally spaced. We also propose that other characteristic modes of black holes, which are non-QNM or holographic QNM, can be used in quantization of entropy spectra just like QNM. From these modes, it is found that only the entropy spectrum of the warped AdS3 black hole is equally spaced as well. Furthermore, by considering a scattering problem in a black hole, we propose that the total transmission modes and total reflection modes of black holes can be regarded as characteristic modes of black holes and result in the equally spaced entropy of the Kerr and Reissner–Nordström black holes. Finally, we conclude that there is a universal behavior that the entropy spectra of various black holes are equally spaced.
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39

SUZUKI, I. H., K. OKADA, K. KAMIMORI, J. SASAKI, H. YOSHIDA, A. HIRAYA, Y. SHIMIZU et al. „AUGER ELECTRON SPECTRA OF Kr2p HOLES USING MONOCHROMATIC SOFT X-RAYS“. Surface Review and Letters 09, Nr. 01 (Februar 2002): 63–67. http://dx.doi.org/10.1142/s0218625x02001963.

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Normal Auger electron spectra from Kr2p hole states, L 23 M 45 M 45 and L 23 M 23 M 45, have been measured using monochromatized synchrotron radiation and a high resolution electron spectrometer. Measured spectra were reproduced with a fitting calculation, where Voigt functions including an instrumental resolution and natural lifetime widths of related core hole states were used. At most final states estimated energies for spectral peaks agree with those by electron and ion beam techniques. Relative intensities for some peaks are appreciably different from the previous results.
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40

Sakalli, I., und G. Tokgoz. „Resonance Spectra of Caged Stringy Black Hole and Its Spectroscopy“. Advances in High Energy Physics 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/739153.

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Maggiore’s method (MM), which evaluates the transition frequency that appears in the adiabatic invariant from the highly damped quasinormal mode (QNM) frequencies, is used to investigate the entropy/area spectra of the Garfinkle–Horowitz–Strominger black hole (GHSBH). Instead of the ordinary QNMs, we compute the boxed QNMs (BQNMs) that are the characteristic resonance spectra of the confined scalar fields in the GHSBH geometry. For this purpose, we assume that the GHSBH has a confining cavity (mirror) placed in the vicinity of the event horizon. We then show how the complex resonant frequencies of the caged GHSBH are computed using the Bessel differential equation that arises when the scalar perturbations around the event horizon are considered. Although the entropy/area is characterized by the GHSBH parameters, their quantization is shown to be independent of those parameters. However, both spectra are equally spaced.
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41

Brotherton, Michael, Jaya Maithil, Adam Myers, Ohad Shemmer, Brandon Matthews, Cooper Dix, Pu Du und Jian-Min Wang. „Quasar black hole masses and accretion rates across cosmic time“. Proceedings of the International Astronomical Union 15, S359 (März 2020): 57–61. http://dx.doi.org/10.1017/s1743921320002392.

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AbstractQuasar black hole masses are most commonly estimated using broad emission lines in single epoch spectra based on scaling relationships determined from reverberation mapping of small samples of low-redshift objects. Several effects have been identified requiring modifications to these scaling relationships, resulting in significant reductions of the black hole mass determinations at high redshift. Correcting these systematic biases is critical to understanding the relationships among black hole and host galaxy properties. We are completing a program using the Gemini North telescope, called the Gemini North Infrared Spectrograph (GNIRS) Distant Quasar Survey (DQS), that has produced rest-frame optical spectra of about 200 high-redshift quasars (z = 1.5–3.5). The GNIRS-DQS will produce new and improved ultraviolet-based black hole mass and accretion rate prescriptions, as well as new redshift prescriptions for velocity zero points of high-z quasars, necessary to measure feedback.
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42

Burd, S. W., und T. W. Simon. „Turbulence Spectra and Length Scales Measured in Film Coolant Flows Emerging From Discrete Holes“. Journal of Turbomachinery 121, Nr. 3 (01.07.1999): 551–57. http://dx.doi.org/10.1115/1.2841350.

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To date, very little attention has been devoted to the scales and turbulence energy spectra of coolant exiting from film cooling holes. Length-scale documentation and spectral measurements have primarily been concerned with the free-stream flow with which the coolant interacts. Documentation of scales and energy decomposition of the coolant flow leads to more complete understanding of this important flow and the mechanisms by which it disperses and mixes with the free stream. CFD modeling of the emerging flow can use these data as verification that flow computations are accurate. To address this need, spectral measurements were taken with single-sensor, hot-wire anemometry at the exit plane of film cooling holes. Energy spectral distributions and length scales calculated from these distributions are presented for film cooling holes of different lengths and for coolant supply plenums of different geometries. Measurements are presented on the hole streamwise centerline at the center of the hole, one-half diameter upstream of center, and one-half diameter downstream of center. The data highlight some fundamental differences in energy content, dominant frequencies, and scales with changes in the hole and plenum geometries. Coolant flowing through long holes exhibits smoothly distributed spectra as might be anticipated in fully developed tube flows. Spectra from short-hole flows, however, show dominant frequencies.
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43

Shi, S. B. „Structural and optical properties of Fe-doped TiO2 films by sol–gel method“. Modern Physics Letters B 34, Nr. 31 (21.07.2020): 2050345. http://dx.doi.org/10.1142/s0217984920503455.

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Fe-doped TiO2 films were prepared by sol–gel spin coating method. After annealing in vacuum, the structural and optical properties of the films were investigated. XRD patterns revealed that all diffraction peaks can be attributed to TiO2 with anatase phase structure. No segregated phases are present in the samples within XRD detection limit. XPS results indicated that iron element exists in a tervalent state and incorporates into TiO2 lattice. Raman spectra demonstrated that all the films are in pure anatase phase. No other vibration modes in the spectra were detected. Raman spectra are consistent with the results of XRD patterns. Photoluminescence spectra at room temperature are sensitive to the concentration of Fe doping. The quenching increases with the increase in amount of dopant, which can be due to the introduction of defect sites such as oxygen vacancy by Fe doping. The free hole can interact with a trapped electron, or a free electron can interact with a trapped hole, resulting in non-radiative.
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44

Васильченко, А. А., В. С. Кривобок, С. Н. Николаев, В. С. Багаев, Е. Е. Онищенко und Г. Ф. Копытов. „Спектр излучения и стабильность двух типов электронно-дырочной жидкости в мелких Si/Si-=SUB=-1-x-=/SUB=-Ge-=SUB=-x-=/SUB=-Si квантовых ямах“. Физика твердого тела 62, Nr. 4 (2020): 529. http://dx.doi.org/10.21883/ftt.2020.04.49115.555.

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Abstract Based on calculations within the density functional theory and an analysis of low-temperature photoluminescence spectra, the structure of electron–hole liquid in shallow Si/Si_1 – _ x Ge_ x Si (100) quantum wells 5 nm wide with germanium content x = 3–5.5% is studied. It is shown that the energy of quasi-two-dimensional electron–hole liquid localized in quantum wells for this composition range as a function of carrier concentration exhibits two local minima. The position of the deeper (major) minimum depends on the quantum well design and controls properties of quasi-two-dimensional electron–hole liquid at low temperatures. For the series of Si/Si_1 – _ x Ge_ x Si quantum wells, modification of properties of electron–hole liquid was experimentally shown, which can be interpreted as a change of the major minimum due to an increases in the germanium concentration in the Si_1 – _ x Ge_ x layer. The effect of the multicomponent composition (electrons, light and heavy holes) of the electron–hole liquid on low-temperature photoluminescence spectra of Si/Si_1 ‒ _ x Ge_ x Si quantum wells is discussed.
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45

Dowell, Floyd E., Alberto B. Broce, Feng Xie, James E. Throne und James E. Baker. „Detection of Parasitised Fly Puparia Using near Infrared Spectroscopy“. Journal of Near Infrared Spectroscopy 8, Nr. 4 (Oktober 2000): 259–65. http://dx.doi.org/10.1255/jnirs.286.

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Near infrared (NIR) spectroscopy was used to identify house fly ( Musca domestica L.) puparia that contained viable parasitoids. Results derived from a partial least squares analysis of NIR spectra showed that about 80–90% of puparia containing parasitoids could be identified correctly. Difference spectra and beta coefficients indicated that absorption differences between parasitised and unparasitised puparia may have been due to moisture content and/or differences in composition of chitin or lipid components. Detection of viable hymenopterous parasitoids within puparia could assist commercial insectaries in delivering known quantities of parasitised puparia for biological control of house flies and other filth flies and in rapidly determining levels of parasitisation of these flies in confined livestock and poultry operations.
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46

Riaz, Shafqat, Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi, Haiyang Wang und Zhibo Yu. „Reflection Spectra of Accretion Disks Illuminated by Disk-like Coronae“. Astrophysical Journal 925, Nr. 1 (01.01.2022): 51. http://dx.doi.org/10.3847/1538-4357/ac3827.

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Abstract Relativistic reflection features in the X-ray spectra of black hole binaries and active galactic nuclei are thought to be produced through illumination of a cold accretion disk by a hot corona. In this work, we assume that the corona has the shape of an infinitesimally thin disk with its central axis the same as the rotational axis of the black hole. The corona can either be static or corotate with the accretion disk. We calculate the disk’s emissivity profiles and iron line shapes for a set of coronal radii and heights. We incorporate these emissivity profiles into relxill_nk and we simulate some observations of a black hole binary with the Nuclear Spectroscopic Telescope Array to study the impact of a disk-like coronal geometry on the measurement of the properties of the system, and in particular, on the possibility of testing the Kerr nature of the source. We find that, in general, the astrophysical properties of the accretion disk are recovered well even if we fit the data with a model employing a broken power law or a lamppost emissivity profile, while it is more challenging to constrain the geometric properties of the black hole spacetime.
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47

CAI, BENGENG, CONGKAO WEN und HUANXIONG YANG. „GLUEBALL MASSES FROM ADS6 GRAVITY THEORY“. Modern Physics Letters A 22, Nr. 07n10 (28.03.2007): 719–25. http://dx.doi.org/10.1142/s0217732307023316.

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In view of the general holographic principle between gauge theories and gravity, We calculate the mass spectra of several typical QCD4 glueballs in term of AdS 6 AdS -Schwarzschild black hole metric of Einstein gravity theory. The obtained mass spectra are numerically in consistent with those from the AdS 7 × S 4 black hole metric of the 11-dimensional supergravity. Besides, by separating the thermal circle from the extra dimensions, we find a novel exact D p-brane solution of Type IIB supergravity, which might provide a scenario for studying the non-perturbative dynamics of QCD4 from the perspective of Type IIB supergravity.
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48

Rohlfing, Michael, und Steven G. Louie. „Electron-hole excitations and optical spectra from first principles“. Physical Review B 62, Nr. 8 (15.08.2000): 4927–44. http://dx.doi.org/10.1103/physrevb.62.4927.

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49

Bao, G., und E. Ostgaard. „Variability spectra of orbiting blobs around a black hole“. Astrophysical Journal 443 (April 1995): 54. http://dx.doi.org/10.1086/175502.

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50

Kekas, Jaak, Artur Suisalu und Valter Zazubovich. „Anomalous Hole Spectra of Chlorin-Doped Low-Temperature Glasses“. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 291, Nr. 1 (Dezember 1996): 215–22. http://dx.doi.org/10.1080/10587259608042750.

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