Results 21 to 30 of about 9,803,268 (311)
Time-resolved β-lactam cleavage by L1 metallo-β-lactamase
Nature Communications, 2022 Metallo-β-lactamases cleave β-lactam moiety of many broadly used antibiotics. Here the authors captured mechanistic details of the enzyme catalyzed reaction using time-resolved xray synchrotron serial crystallography.
M. Wilamowski +12 more
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Two-way tuning of structural order in metallic glasses
Nature Communications, 2020 While metallic glasses are expected to have tunable structures, these have rarely been demonstrated. Here, the authors combine temperature and pressure to show a two-way structural tuning in rare earth-based metallic glasses beyond the nearest-neighbor ...
Hongbo Lou +14 more
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International Astronomical Union Colloquium, 1986 AbstractType I cosmic X-ray bursts are widely thought to result from thermonuclear flashes in the surface layers of accreting neutron stars. The thermonuclear-flash model is able to account for a wide variety of observed burst phenomena. However, a number of theoretical and observational problems persist.
Fulvio Melia, Paul C. Joss
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Local structure of liquid gallium under pressure
Scientific Reports, 2017 In situ high energy X-ray pair distribution function (PDF) measurements, microtomography and reverse Monte Carlo simulations were used to characterize the local structure of liquid gallium up to 1.9 GPa.
Renfeng Li +10 more
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A low-cost X-ray-transparent experimental cell for synchrotron-based X-ray microtomography studies under geological reservoir conditions [PDF]
, 2014 A new modular X-ray-transparent experimental cell enables tomographic investigations of fluid rock interaction under natural reservoir conditions (confining pressure up to 20 MPa, pore fluid pressure up to 15 MPa, temperature ranging from 296 to 473 K ...
Zhu, Wenlu +13 more
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The novel high-pressure/high-temperature compound Co12P7 determined from synchrotron data
Acta Crystallographica Section E: Crystallographic Communications, 2020 The structural properties of cobalt phosphides were investigated at high pressures and temperatures to better understand the behavior of metal-rich phosphides in Earth and planetary interiors. Using single-crystal X-ray diffraction synchrotron data and a
Claire Zurkowski +5 more
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X-ray observations of ultraluminous X-ray sources [PDF]
Astrophysics and Space Science, 2007 Invited talk at the 5th Stromlo Symposium. 10 pages, 4 figures.
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Pinch plasmas as intense X-ray sources for laboratory applications
, 2022 S.479-482 : Abb.,Lit.Pinch plasma x-ray sources have been developed for x-ray lithography and x-ray microscopy. The lithography source is compatible with the electron storage ring printing process with respect to spectrum and enables full depth exposures
Neff, W. +4 more
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Altered chemistry of oxygen and iron under deep Earth conditions
Nature Communications, 2019 Iron oxides prevail in the deep Earth, at extreme pressures and temperatures, with different stoichiometries than in ambient conditions. Here, high-pressure synchrotron X-ray spectroscopic measurements reveal the oxidation states of Fe and O in iron ...
Jin Liu +9 more
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The effect of proton damage on the X-ray spectral response of MOS CCDs for the swift X-ray telescope [PDF]
, 2002 The effect of non-ionising energy loss(NIEL) of protons in charge-coupled devices is to displace silicon atoms and any dopant materials present from their lattice positions to form lattice defects which in turn can trap electrons [1].
Abbey, AF +9 more
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