A low-temperature ammonia synthesis process is required for on-site synthesis. Barium-doped calcium amide (Ba-Ca(NH ) ) enhances the efficacy of ammonia synthesis mediated by Ru and Co by 2 orders of magnitude more than that of a conventional Ru catalyst at temperatures below 300 °C. Furthermore, the presented catalysts are superior to the wüstite-based Fe catalyst, which is known as a highly active industrial catalyst at low temperatures and pressures. Nanosized Ru-Ba core-shell structures are self-organized on the Ba-Ca(NH ) support during H pretreatment, and the support material is simultaneously converted into a mesoporous structure with a high surface area (>100 m g ). These self-organized nanostructures account for the high catalytic performance in low-temperature ammonia synthesis.

We discuss the indirect detection of the wino dark matter utilizing gammaray observations of dwarf spheroidal galaxies (dSphs). After carefully reviewing current limits with particular attention to astrophysical uncertainties, we show prospects of the wino mass limit in future gamma-ray observation by the Fermi-LAT and the GAMMA-400 telescopes. We find that the improvement of the so-called J-factor of both the classical and the ultra-faint dSphs will play a crucial role to cover whole mass range of the wino dark matter. For example, with δ(log 10 J) = 0.1 for both the classical and the ultra-faint dSphs, whole wino dark matter mass range can be covered by 15 years and 10 years data at the Fermi-LAT and GAMMA-400 telescopes, respectively.Since the discovery of a new boson at the Large Hadron Collider (LHC) [1], which seems strongly to be the Higgs boson of the standard model (SM), people have started examining candidates of new physics beyond the SM more closely. One of the most striking hints from the discovery is that its mass is observed at about 126 GeV, which indicates that the new physics behind the Higgs mechanism is presumably described by a weakly-interacting theory. Among several weakly interacting extensions of the SM, supersymmetry (SUSY) has been considered so far as the most promising candidate. When SUSY particles exist within a TeV range as expected in the pre-LHC era, however, the Higgs boson mass of 126 GeV is difficult to be achieved in the minimal supersymmetric extension of the SM. Rather, larger SUSY breaking effects are mandatory to push up the Higgs boson mass, which in turn requires the typical mass scale of sparticles to be much higher than 1 TeV [2]. Such high-mass sparticles are actually not only compatible with null-observations of new physics signals at the LHC experiment, but also ameliorate the problem of too large SUSY contributions to flavor-changing neutral current (FCNC) processes.An apparent downside of high-mass sparticles is the loss of a good candidate for dark matter. When the dark matter is one of the sparticles with the mass much larger than 1 TeV, its predicted mass density is too high to be consistent with the observation [3]. This problem is, however, naturally resolved in a class of models of supergravity mediation if the SUSY breaking sector does not include any singlet fields [4,5]. In the models, all scalar particles acquire their masses of the order of the gravitino mass via tree level interactions, while gaugino masses are dominated by one-loop anomaly mediated contributions [4,6]. #1 On top of these features, the models predict the lightest supersymmetric particle (LSP) to be the almost pure neutral wino in most parameter space. The neutral wino is known to be a good candidate for a weakly interacting massive particle (WIMP) dark matter when its mass is of O(1) TeV [12]- [14]. Therefore, when the gravitino mass is in the range of tens to hundreds TeV range, we can realize a hierarchical spectrum appropriate to explain the observed Higgs boson mass while having a...

A low‐temperature ammonia synthesis process is required for on‐site synthesis. Barium‐doped calcium amide (Ba‐Ca(NH2)2) enhances the efficacy of ammonia synthesis mediated by Ru and Co by 2 orders of magnitude more than that of a conventional Ru catalyst at temperatures below 300 °C. Furthermore, the presented catalysts are superior to the wüstite‐based Fe catalyst, which is known as a highly active industrial catalyst at low temperatures and pressures. Nanosized Ru–Ba core–shell structures are self‐organized on the Ba‐Ca(NH2)2 support during H2 pretreatment, and the support material is simultaneously converted into a mesoporous structure with a high surface area (>100 m2 g−1). These self‐organized nanostructures account for the high catalytic performance in low‐temperature ammonia synthesis.

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