515,730 research outputs found
[Report to W. P. Gannaway by V. J. Brian and M. H. Brumley, February 7, 1964 #1]
No full textIntelligence report addressed to W. P. Gannaway of the Dallas Police Department's Special Service Bureau. The report, which was submitted by V. J. Brian and M. H. Brumley, states that Milton Turlington is a close friend of Jack Ruby. He owns and operates Turlington's Grocery. Turlington said that he had last seen Jack Ruby one or two weeks before the assassination of President Kennedy
[Report to W. P. Gannaway by V. J. Brian and M. H. Brumley, February 7, 1964 #2]
No full textPhotocopy of an intelligence report addressed to W. P. Gannaway of the Dallas Police Department's Special Service Bureau. The report, which was submitted by V. J. Brian and M. H. Brumley, states that Milton Turlington is a close friend of Jack Ruby. He owns and operates Turlington's Grocery. Turlington said that he had last seen Jack Ruby one or two weeks before the assassination of President Kennedy
[Report to W. P. Gannaway by H. M. Hart and V. T. Somers, April 1, 1964 #2]
No full textCriminal intelligence report by H. M. Hart regarding Lee Harvey Oswald. Attached is a collection of documents pertaining to Oswald. These documents include attendance records, report cards, and registration cards
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
[Report to W. P. Gannaway by M. H. Brumley and V. J. Brian, January 31, 1964]
No full textPoor quality photocopy of a report addressed to Captain W. P. Gannaway of the Dallas Police Department. The report, which was submitted by detectives M. H. Brumley and V. J. Brian, states that an inmate claiming to know Jack Ruby may have information tying Jack Ruby and Lee Harvey Oswald. The inmate said that Ruby told him that Lee Harvey Oswald might be moved from Dallas, Texas to California
H.-P.-V. Nunn, M. A., What is Modernism ?, 1932
No full textLepin M. H.-P.-V. Nunn, M. A., What is Modernism ?, 1932. In: Revue des Sciences Religieuses, tome 13, fascicule 3, 1933. pp. 502-503
H.-P.-V. Nunn, M. A., What is Modernism ?, 1932
No full textLepin M. H.-P.-V. Nunn, M. A., What is Modernism ?, 1932. In: Revue des Sciences Religieuses, tome 13, fascicule 3, 1933. pp. 502-503
(P,T)-behavior of an intermediate scapolite of unusual I4/m symmetry
No full textScapolites are a group of open-framework aluminosilicates with general formula M4T12O24A, where M are monovalent or divalent cations (usually Na, Ca and minor K), T are trivalent or tetravalent cations (mostly Al and Si) in tetrahedral coordination, and A are anionic elements or groups such as Cl, CO3 and SO4. Samples with a composition closer to the Na4Al3Si9O24Cl and Ca4Al6Si6O24CO3 end-members are usually reported to crystallize with a structure described in the I4/m space group, whereas intermediate members are reported to show a P42/n symmetry. Scapolites are usually formed under metamorphic conditions in the presence of fluids, but are also reported as constituents of upper mantle xenoliths [1, 2]. Scapolites form a complex non-binary solid solution as a function of the (NaCl)-(CaCO3)-(CaSO4) substitutions, which couples with Al-Si re-arrangements [3, 4]. The variable crystal chemistry and symmetry of these minerals influences their elastic and structural response to pressure and temperature variations and, consequently, their stability fields. In this study, we have investigated the behavior of an intermediate scapolite of the composition (Na1.86Ca1.86K0.23Fe0.01)(Al4.36Si7.64)O24[Cl0.48(CO3)0.48(SO4)0.01]) and its unusual symmetry I4/m, by means of in situ X-ray and neutron diffraction at high-T (from -100 to +1000 °C), high-P (up to 17.8 GPa) and combined high-T and P (up to 650 °C and 16 GPa). Experimental data show that the unusual I-centered lattice is always preserved, whereas a phase transition towards a triclinic polymorph, that can be described according to an unconventional I-1 symmetry, was found to occur at 9-10 GPa, with a modest influence from temperature. The deformation mechanisms, acting at the atomic scale, that lead to the structural instability and phase transition have been described on the basis of a series of single-crystal structure refinements. A comparison with data from literature allows to model the elastic response of scapolites as a function of their crystal chemistry, whereas a model of the thermo-elastic behavior is less straightforward on the basis of the available data, suggesting that a thorough re-investigation of the thermal behavior of the complex scapolite solid solution is desirable.
References
[1] J.K. Porter, H. Austrheim Terra Nova. 2017, 29, 29-35. [2] L. Torró, R.F. Martin, D. Schumann, J. Cox, S. Galì Medina, J.C. Melgarejo Draper Eur. J. Mineral. 2018, 30, 45-59. [3] D.K. Teerstra, B.L. Sheriff Chem. Geol. 1997, 136, 233-260. [4] E.V. Sokolova, F.C. Hawthorne Can. Mineral. 2008, 46, 1527-1544
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Spectroscopic ellipsometry on photonic crystals made by self-assembled dye-doped P(S/HEMA) nanospheres
No full textIn the present work the use of Spectroscopic Ellipsometry (SE) for a direct and non-destructive optical and structural characterization of opaline photonic crystals is demonstrated. The analysis is performed on self-assembled dye-doped polymer nanospheres deposited on glass substrates. We study two different polymers beads: PMMA (as well-known reference material) and poly[styrene-(co-2-hydroxyethyl metacrylate)] [P(S/HEMA)]. We show that SE allows to obtain information about all the most important optical and geometrical features of the photonic structure as the effective refractive index (n(eff)), the refractive index modulation, the optical anisotropy, the air/sphere filling fraction, the layer distance and the size of nanospheres. Results are in very good agreement with those obtained by Scanning Electron Microscope (SEM) analysis and Bragg reflection spectroscopy
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