We have made the first observation of superconductivity in TlNi2Se2 at T(C)=3.7  K, and it appears to involve heavy electrons with an effective mass m*=(14-20)m(b), as inferred from the normal-state electronic specific heat and the upper critical field, H(C2)(T). We found that the zero-field electronic specific-heat data, C(es)(T) (0.5  K≤T<3.7  K) in the superconducting state can be fitted with a two-gap BCS model, indicating that TlNi2Se2 seems to be a multiband superconductor, which is consistent with the band calculation for the isostructural KNi2S2. It is also found that the electronic specific-heat coefficient in the mixed state γN(H) exhibits a H(1/2) behavior, which is considered as a common feature of the d-wave superconductors. TlNi2Se2, as a d-electron system with heavy electron superconductivity, may be a bridge between cuprate- or iron-based and conventional heavy-fermion superconductors.

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T 1 f 6 A 1 spin-forbidden transition of Mn 2þ . 15,52 Mn 2þ -incorporated Rand β-Zn 2 SiO 4 are well-known green and yellow practical phosphors, respectively, and they are very important technological materials. The synthesis and properties of R-Zn 2 SiO 4 have been extensively investigated, as mentioned above, whereas those of β-Zn 2 SiO 4 have rarely been performed due to the metastability and especially the uncertainty of the crystal structure of the β phase. Taylor has produced β-Zn 2 SiO 4 by heating Zn 4 (OH) 2 Si 2 O 7 3 H 2 O in ambient atmosphere, but the detailed crystal structure analysis of this phase is not provided. β-Zn 2 SiO 4 powders were selectively synthesized afterward. 14,27,35,53,54 More recently, Jiang et al. 55 pointed out that the coordination environment of Mn 2þ in Rand β-Zn 2 SiO 4 is different based on the X-ray photoelectron spectroscopic analysis. This conclusion is not determinative because they provided neither a detailed crystal structure analysis nor the crystal field interpretation. There are many outstanding issues on the polymorphs of zinc silicate, especially for β-Zn 2 SiO 4 . Further

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The change of blood oxygen in renal cortex and medulla could be detected with BOLD-MRI, so as to evaluate the renal function and anoxic injury of CKD.