Ultrasonographic and Mammographic Findings of Gynecomastia

Lee, Soo Kyung; Choi, Gyo Chang; Hong, Hyun Sook; Kim, Young Beom; Lee, Hae Kyung; Kwon, Kui Hyang

doi:10.3348/jkrs.1996.35.5.825

Cited by 3 publications

(4 citation statements)

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“…I, the values of J show good agreement with three general trends reported by experiment 30 : (i) dominant J 2 > 0, (ii) a J 1 < 0 and (iii) a significantly smaller but non-negligible J 3 , all in broad agreement with the trends concluded from a recent GGA + U DFT calculation on CoO (though no such dual exchange was predicted) 32 . In terms of thermodynamic data, the Curie-Weiss constant is related to the exchange interactions via Θ CW = − 2 3 S(S + 1) i z i J i , where the spin value S = 3 2 and z i is the number of neighbors for each i th exchange interaction 48,49 . Following Kanamori 16 and applying a correction for spinorbit coupling, the effective Curie-Weiss temperature θ CW is listed in Tab.…”

Section: Resultsmentioning

confidence: 99%

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Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

et al. 2018

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Neutron spectroscopy was applied to study the magnetic interactions of orbitally degenerate Co 2+ on a host MgO rocksalt lattice where no long range spin or orbital order exists. The paramagnetic nature of the substituted monoxide Co0.03Mg0.97O allows for the disentanglement of spin-exchange and spin-orbit interactions. By considering the prevalent excitations from Co 2+ spin pairs, we extract 7 exchange constants out to the fourth coordination shell. An antiferromagnetic next nearest neighbor 180 • exchange interaction is dominant, however dual ferromagnetic and antiferromagnetic interactions are observed for pairings with other pathways. These interactions can be understood in terms of a combination of orbital degeneracy in the t2g channel and the Goodenough-Kanamori-Anderson (GKA) rules. Our work suggests that such a hierarchy of exchange interactions exists in transition metal-based oxides with a t2g orbital degeneracy.

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Section: Resultsmentioning

confidence: 99%

“…The values from GGA + U DFT have been renormalized such that J2 is equal to the value from this current study. The values of TN , θ CW and λ reported in literature17,25,46,47 for CoO have been included for the purposes of a comparison to the mean field value48,49 of θ CW corresponding to the J values determined by the current study.…”

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confidence: 99%

Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

et al. 2018

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“…Cyclobutane is a well known nonplanar molecule 4 with a puckering angle of about 28° (27.9° by Egawe et al 5), which has been studied by ab initio 6, 7, x‐ray 8, electron diffraction (ED) 9, and by spectroscopic experiments 10, 11. As in cyclopentane 12, the puckered structure is found to be energetically preferred to accommodate angle strain and torsion strain. The planar form (Fig.…”

Section: Introductionmentioning

confidence: 99%

Quantum chemical study of several monocyclic complex β‐lactam C‐3, C‐4, and N‐derivatives, and β‐ring model molecules

Palafox

Iza

Gil

et al. 2002

Int J of Quantum Chemistry

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ABSTRACT:A quantum chemical study of several complex monocyclic 4-benzoyl-4-phenyl-␤-lactam derivatives was carried out using cyclobutane, azetidine, 2-azetidinone, 1-methyl-2-azetidinone, and 3-methyl-2-azetidinone as model compounds. The optimum geometry was obtained for the different conformations. The planarity of the ring was discussed in terms of the influence of the substituents on the amide resonance. To better analyze the amide resonance and the activity of the ␤-lactam ring, a vibrational study was also carried out. To examine the influence of solvent polarity on the carbonyl bands, the Fourier transform-infrared (FT-IR) spectra of the ␤-lactam monocyclic derivatives were recorded in CCl 4 , C 6 H 6 , and CHCl 3 solutions. The normal vibrations of the ␤-lactam ring in the model compounds were characterized and used in the analysis of the ␤-ring of more complex derivatives.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Diffusion controlled reactions occur in a wide variety of nature, including chemical reactions, biological reactions, and exciton annihilations in crystal. [1][2][3] Initially, reactants are uniformly distributed on a d-dimensional substrate.…”

Section: Introductionmentioning

confidence: 99%

Diffusion-limited reaction in the presence of random fields and transition rates

Lee

2002

The Journal of Chemical Physics

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Articles you may be interested inEffects of excluded volume interaction and dimensionality on diffusion-mediated reactions J. Chem. Phys. 134, 094506 (2011); 10.1063/1.3560419 Corrections to the law of mass action and properties of the asymptotic t = ∞ state for reversible diffusion-limited reactions J. Chem. Phys. 122, 084103 (2005); 10.1063/1.1849161 Erratum: "Efficiency of encounter-controlled reaction between diffusing reactants in a finite lattice" [J. Chem.

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Ultrasonographic and Mammographic Findings of Gynecomastia

Cited by 3 publications

References 0 publications

Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

Disentangling orbital and spin exchange interactions for Co2+ on a rocksalt lattice

Quantum chemical study of several monocyclic complex β‐lactam C‐3, C‐4, and N‐derivatives, and β‐ring model molecules

Diffusion-limited reaction in the presence of random fields and transition rates

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