Results 51 to 60 of about 9,893 (141)
A mixed ultrasoft/normconserved pseudopotential scheme [PDF]
Phys. Rev. B 53, 6869 (1996), 1996 A variant of the Vanderbilt ultrasoft pseudopotential scheme, where the normconservation is released for only one or a few angular channels, is presented. Within this scheme some difficulties of the truly ultrasoft pseudopotentials are overcome without sacrificing the pseudopotential softness.
arxiv +1 more source
Calculation of the X-Ray Spectrum of a Mammography System with Various Voltages and Different Anode-Filter Combinations Using MCNP Code [PDF]
Iranian Journal of Medical Physics, 2016 Introduction One of the best methods in the diagnosis and control of breast cancer is mammography. The importance of mammography is directly related to its value in the detection of breast cancer in the early stages, which leads to a more effective ...
Lida Gholamkar +3 more
doaj +1 more source
The $^{103}$Rh NMR Spectroscopy and Relaxometry of the Rhodium Formate Paddlewheel Complex [PDF]
arXiv, 2023 The NMR spectroscopy of spin-1/2 nuclei with low gyromagnetic ratio is challenging, due to the low NMR signal strength. Methodology for the rapid acquisition of $^{103}$Rh NMR parameters is demonstrated for the case of the rhodium formate "paddlewheel" complex $\mathrm{Rh_2(HCO_2)_4}$.
arxiv
Comparison Of The MWCNTs-Rh And MWCNTs-Re Carbon-Metal Nanocomposites Obtained In High-Temperature
Archives of Metallurgy and Materials, 2015 Carbon-metal nanocomposites consisting of multiwalled carbon nanotubes coated with rhodium or rhenium nanoparticles by the high-temperature method were fabricated during the research undertaken.
Dobrzańska-Danikiewicz A.D. +3 more
doaj +1 more source
Catalysis Communications, 2021 For the combustion of methane, a partial replacement of platinum by rhodium leads to a significantly improved light-off behavior of the corresponding mixed Pt-Rh/γ-Al2O3 catalysts compared to a catalyst containing only Pt supported on γ-Al2O3. For all Pt-
Stefan Neuberg +4 more
doaj
Resonant Propagation of Entangled Rhodium Mossbauer Gammas [PDF]
arXiv, 2006 We report the resonant propagation of the long-lived Mossbauer gamma in the time-resolved Mossbauer spectroscopy. Recently, three entangled gammas emitted from the E3 rhodium Mossbauer transition has been proposed to interpret the extraordinary observations in the previous report. Further observation reported here is the dynamic beat of these entangled
arxiv
Rhodium Nanoparticles for Ultraviolet Plasmonics [PDF]
, 2015 The non-oxidizing catalytic noble metal rhodium is introduced for ultraviolet plasmonics. Planar tripods of 8 nm Rh nanoparticles, synthesized by a modified polyol reduction method, have a calculated local surface plasmon resonance near 330 nm. By attaching p-aminothiophenol, local field-enhanced Raman spectra and accelerated photo-damage were observed
arxiv +1 more source
A nine-atom rhodium–aluminum oxide cluster oxidizes five carbon monoxide molecules
Nature Communications, 2016 Noble metals can promote the stable lattice oxygen of metal oxides to take part in oxidation reactions. Here, the authors report the preparation and reactivity of rhodium-aluminum oxide cluster ions, in which the rhodium ion promotes the transfer of five
Xiao-Na Li +3 more
doaj +1 more source
Possible Stimulated Emission of Entangled Rhodium Mossbauer Gammas [PDF]
arXiv, 2006 Observation of possible stimulated emission of Mossbauer gamma is reported by liquid-nitrogen quenching of rhodium sample from room temperature to 77K in the time-resolved Mossbauer spectroscopy. Recently, we have demonstrated the anomalous emission of three entangled gammas of the E3 Mossbauer transition generated by bremsstrahlung irradiation.
arxiv
Rhodium-Catalyzed Linear Codimerization and Cycloaddition of Ketenes with Alkynes
Molecules, 2010 A novel rhodium-catalyzed linear codimerization of alkyl phenyl ketenes with internal alkynes to dienones and a novel synthesis of furans by an unusual cycloaddition of diaryl ketenes with internal alkynes have been developed.
Teruyuki Kondo +6 more
doaj +1 more source