Results 101 to 110 of about 197,763 (248)
Formation of Uranium Pinacolate from the Reductive Coupling of Acetone
Zeitschrift für anorganische und allgemeine Chemie, EarlyView.Uranium(III) cyclopentadienyl complexes are shown to react with acetone in a pinacol coupling, forming uranium pinacolate complexes. Single crystals obtained from the reaction are the first direct structural proof of the previously proposed metallapinacolate intermediate. 1,2‐Diols are elemental building blocks in organic synthesis.
León Hillers, Lisa Vondung
wiley +1 more source
SEARCH FOR A COMPACT SCINTILLATING COMPONENT IN SNR 3С58 AT DECAMETER WAVELENGTHS
Radio Physics and Radio Astronomy, 2014 The upper limit for the flux of a compact source of continuum radio emission in SNR 3C58, (2.7 ± 0.9) Jy, was obtained by the highest sensitive observations of interplanetary scintillations at decameter wavelengths.
N. N. Kalinichenko
doaj +1 more source
The imprint of a symbiotic binary progenitor on the properties of Kepler's supernova remnant [PDF]
, 2011 We present a model for the type Ia supernova remnant (SNR) of SN 1604, also known as Kepler’s SNR. We find that its main features can be explained by a progenitor model of a symbiotic binary consisting of a white dwarf and an AGB donor star with an ...
A. Chiotellis +4 more
semanticscholar +1 more source
DMSO solvates of tert‐butylcalix[6]arene and related multisolvent structures
Acta Crystallographica Section B, EarlyView.This study highlights how solvent properties, host–guest interaction energies and packing preferences govern the solid‐state organization of tert‐butylcalix[6]arene, a macrocycle of importance in separation, molecular recognition and supramolecular chemistry.tert‐Butylcalix[6]arene (TBC6) exhibits a rich crystal energy landscape, with structural ...
Monika Wanat +2 more
wiley +1 more source
Missing Titanium in the Asymmetric Supernova Remnant W 49B
The Astrophysical JournalThe progenitor of the W 49B supernova remnant is still under debate. One of the candidates is a jet-driven core-collapse supernova. In such a highly asymmetric explosion, a strong α -rich freeze-out is expected in local high-entropy regions, which should
Toshiki Sato +4 more
doaj +1 more source
FERMI LARGE AREA TELESCOPE DETECTION OF THE YOUNG SUPERNOVA REMNANT TYCHO [PDF]
, 2011 After almost three years of data taking in sky-survey mode, the Fermi Large Area Telescope has detected γ-ray emission toward Tycho's supernova remnant (SNR).
F. Giordano +11 more
semanticscholar +1 more source
Molecular Ecology, EarlyView.ABSTRACT Population declines may have long‐term genetic consequences, including genetic erosion and inbreeding depression, which could affect species' evolutionary potential and increase their risk of extinction. Small populations are more vulnerable to genetic threats than common species, but even species with large populations can also be at risk of ...
Guoling Chen, Simon Yung Wa Sin
wiley +1 more source
On the Mass Distribution of Stellar-Mass Black Holes
Open Astronomy, 2014 The observational stellar-mass black hole mass distribution exhibits a maximum at about 8 M⊙. It can be explained via the details of the massive star evolution, supernova explosions, or consequent black hole evolution.
Malkov O. Yu.
doaj +1 more source
SUPERNOVAE EXPLOSIONS THEORY AND COMPACT REMNANT OF SN 1987A
Odessa Astronomical Publications, 2012 Hydrodynamics of massive star explosion within a non-spherical supernova model is presented. The explosive burning is computed in the He-core of a progenitor.
V. M. Chechetkin +3 more
doaj +1 more source
Unveiling the nature of RX J0002+6246 with XMM-Newton
, 2007 The X-ray source RX J0002+6246 was discovered close to the supernova remnant CTB1 in a ROSAT observation performed in 1992. The source phenomenology (soft spectrum, apparent lack of counterparts, possible pulsations at 242 ms, hints for surrounding ...
A. De Luca +14 more
core +1 more source