While valley polarization with strong Zeeman splitting is the most prominent characteristic of two-dimensional (2D) transition metal dichalcogenide (TMD) semiconductors under magnetic fields, enhancement of the Zeeman splitting has been demonstrated by incorporating magnetic dopants into the host materials. Unlike Fe, Mn, and Co, V is a distinctive dopant for ferromagnetic semiconducting properties at room temperature with large Zeeman shifting of band edges. Nevertheless, little known is the excitons interacting with spin-polarized carriers in V-doped TMDs. Here, we report anomalous circularly polarized photoluminescence (CPL) in a V-doped WSe2 monolayer at room temperature. Excitons couple to V-induced spin-polarized holes to generate spin-selective positive trions, leading to differences in the populations of neutral excitons and trions between left and right CPL. Using transient absorption spectroscopy, we elucidate the origin of excitons and trions that are inherently distinct for defect-mediated and impurity-mediated trions. Ferromagnetic characteristics are further confirmed by the significant Zeeman splitting of nanodiamonds deposited on the V-doped WSe2 monolayer.

High spin states in the nucleus lS4Er have been reinvestigated using the *23Sb(asc1, 4n) reaction and a variety of spectroscopic techniques including excitation functions, 7-7 coincidences, 7 angular distribution and linear polarization measurements. From the measured energies, relative intensities and transition multipolarities a new level scheme has been deduced up to an excitation energy of ~ 12 MeV and spin 36. An interpretation of the experimental results is given in terms of the deformed Woods-Saxon orbitals. Gigantic backbending (superdeformation) effect is studied theoretically within the cranking model.

Salinity is one of the major abiotic stresses affecting plant productivity. Soybean [Glycine max (L.) Merr.] is moderately sensitive to saltaffected soils. In this study, Arabidopsis vacuolar

The thermostable esterase Est-Y29, belonging to the family VIII lipolytic esterase isolated 20 from metagenomes extracted from the topsoil in Republic of Korea, was identified as a 21 promising catalyst for the production of (S)-ketoprofen, an important nonsteroidal anti-22 inflammatory drug (NSAID). For industrial applications, the enantioselectivity of the enzyme towards the S-enantiomer of the racemic ketoprofen ester substrate needs to be improved. To 24 understand the structural basis of Est-Y29 enantioselectivity, which is necessary for the rational 25 design of an enzyme with enhanced enantioselectivity, we solved the crystal structures of Est-26 Y29 bound to (S)-ketoprofen at 1.69 Å resolution. Structural analyses revealed that the S-27 enantiomer can be stabilized by a -interaction between the methyl substituent at the chiral 28 carbon of the ligand and the aromatic pocket formed by Tyr123, Phe125, and Tyr170. This 29 finding is further supported by the highly improved enantioselectivity of the mutant Est-Y29 30 (F125W) toward (S)-ketoprofen due to the enhanced -interaction. Our results provide the 31 molecular basis of the enantioselectivity of Est-Y29 against (S)-ketoprofen and further offer 32 the opportunity for the rational design of enzyme enantioselectivity as well as potential 33 applications of the mutant Est-Y29 to industrial biocatalysts.