3,247 research outputs found

    Irreducible MultiQutrit Correlations in Greenberger-Horne-Zeilinger Type States

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    Following the idea of the continuity approach in [D. L. Zhou, Phys. Rev. Lett. 101, 180505 (2008)], we obtain the degrees of irreducible multi-party correlations in two families of nn-qutrit Greenberger-Horne-Zeilinger type states. For the pure states in one of the families, the irreducible 2-party, nn-party and (nm)(n-m)-party (0<m<n20< m < n-2) correlations are nonzero, which is different from the nn-qubit case. We also derive the correlation distributions in the nn-qutrit maximal slice state, which can be uniquely determined by its (n1)(n-1)-qutrit reduced density matrices among pure states. It is proved that there is no irreducible nn-qutrit correlation in the maximal slice state. This enlightens us to give a discussion about how to characterize the pure states with irreducible nn-party correlation in arbitrarily high-dimensional systems by the way of the continuity approach.Comment: 5p, no fi

    Ethyl 3-[2-(p-tolyl­carbamothio­yl)hydrazinyl­idene]butano­ate

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    The title compound, C14H19N3O2S, was obtained from a condensation reaction of N-(p-tol­yl)hydrazinecarbothio­amide and ethyl acetoacetate. The mol­ecule assumes an E configuration; the thio­semicarbazide and ester groups are located on the opposite sides of the C=N bond. The almost planar thio­semicarbazide unit (r.m.s. deviation = 0.0130 Å) is tilted at a dihedral angle of 49.54 (12)° with respect to the benzene ring. Inter­molecular N—H⋯N and N—H⋯S hydrogen bonding stabilizes the crystal structure. The eth­oxy group of the ester unit is disordered over two positions, with a site-occupancy ratio of 0.680 (10):0.320 (10)

    cyclo-Tetra­kis(μ-naphthalene-1,8-dicarboxyl­ato)tetra­kis­[diaqua­(2,2′-bipyridine)­manganese(II)] tetra­hydrate

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    In the title centrosymmetric tetra­nuclear complex, [Mn4(C12H6O4)4(C10H8N2)4(H2O)8]·4H2O, two independent MnII ions are coordinated in a slightly disorted octa­hedral environment by two aqua ligands, two naphthalene-1,8-dicarboxyl­ate (1,8-nap) ligands and one bis-chelating 2,2′-bipyridine (2,2′-bipy) ligand. In the crystal, mol­ecules are linked by inter­molecular O—H⋯O hydrogen bonds into chains along [100]. These chains are further linked by weak π–π inter­actions with centroid–centroid distances in the range of 3.609 (2)–3.758 (1) Å, forming a three-dimensional supra­molecular network

    1-Benzyl­idene­amino-3-(4-methyl­phen­yl)thio­urea

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    In the title compound, C15H15N3S, the almost planar 2-benzyl­idenehydrazinecarbothio­amide unit (r.m.s. deviation = 0.0351 Å) is aligned at a dihedral angle of 64.42 (6)° with respect to the plane of the tolyl ring. The mol­ecule exhibits an E configuration for the azomethine linkage. In the crystal, inter­molecular N—H⋯S hydrogen bonds about centers of inversion lead to the formation of dimers

    3-[(Furan-2-yl­methyl­idene)amino]-1-(4-methyl­phen­yl)thio­urea

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    There are two independent mol­ecules in the asymmetric unit of the title compound, C13H13N3OS, which was obtained from a condensation reaction of N-(p-tol­yl)hydrazinecarbothio­amide and furfural. The dihedral angles between the mean planes of the tolyl ring and the (furan-2-yl­methyl­ene)hydrazine unit are 39.83 (8) and 48.95 (7)° in the two mol­ecules. The mol­ecules both exhibit an E configuration. In the crystal, inter­molecular N—H⋯N and N—H⋯S hydrogen bonds connect the two independent mol­ecules

    High-Q exterior whispering gallery modes in a metal-coated microresonator

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    We propose a kind of plasmonic whispering gallery modes highly localized on the exterior surface of a metal-coated microresonator. This exterior (EX) surface mode possesses high quality factors at room temperature, and can be efficiently excited by a tapered fiber. The EX mode can couple to an interior (IN) mode and this coupling produces a strong anti-crossing behavior, which not only allows conversion of IN to EX modes, but also forms a long-lived anti-symmetric mode. As a potential application, the EX mode could be used for a biosensor with a sensitivity high up to 500 nm per refraction index unit, a large figure of merit, and a wide detection range

    Movable Fiber-Integrated Hybrid Plasmonic Waveguide on Metal Film

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    A waveguide structure consisting of a tapered nanofiber on a metal film is proposed and analyzed to support highly localized hybrid plasmonic modes. The hybrid plasmonic mode can be efficiently excited through the in-line tapered fiber based on adiabatic conversion and collected by the same fiber, which is very convenient in the experiment. Due to the ultrasmall mode area of plasmonic mode, the local electromagnetic field is greatly enhanced in this movable waveguide, which is potential for enhanced coherence light emitter interactions, such as waveguide quantum electrodynamics, single emitter spectrum and nonlinear optics

    Cloning and characterization of functional keratinassociated protein 5-4 gene in maize

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    Keratin-associated proteins (KAPs) 5-4 which belongs to keratin-associated protein (KRTAP) type 5 family has two major groups: high/ultrahigh cysteine (HS) and high glycine-tyrosine (HGT). Based on bioinformatic prediction, we experimentally cloned a fragment containingan open reading frame of 1849 bp from maize, which encodes a protein of 408 amino acids. BLAST analysis indicated that KAP5-4 is homologous to the qPE9-1 protein in rice. Conserved domains analysis predicted the presence of five domains. Real time reverse transcriptase polymerase chain reaction (RT-PCR) indicated that the expression of this gene is up-regulated in response to water-deficit stress in the root and leaf.Keywords: Maize, keratin-associated protein 5-4, water-deficit stress.African Journal of Biotechnology Vol. 11(29), pp. 7417-7423, 10 April, 201

    Further improvement of N6 medium for callus induction and plant regeneration from maize immature embryos

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    To explore the possibility to improve N6 medium for callus induction and plant regeneration from maize immature embryos, comparative experiments were conducted to screen the optimal calcium concentration for the callus induction medium and the subculture medium modified from N6 medium and to examine the effects of uniconazole and ABT root promoting powder supplement on plant regeneration and root generation. According to the results, the calcium concentration of N6 medium was increased from 1.13 to 5 mmol/l for callus induction and subculture. Uniconazole from 0.25 and 0.5 mg/l and ABT root promoting powder of 0.5 mg/l were suggested to be supplemented to the regeneration medium and the root generation, separately. On these improved media, the frequency of callus induction, the relative proliferation rate of callus subculture, the regeneration rate and the average root biomass of the regenerated plantlets increased significantly. All these improvements facilitate the establishment of acceptor system from elite parental inbred lines of commercial hybrids and provide a solid basis for transgenic manipulation of maize.Keywords: ABT root-promoting powder, calcium, callus induction, immature embryo, maize, N6 medium, plant regeneration, uniconazol
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