Taxonomic Notes of the Subfamily Scydmaeninae (Coleoptera: Staphylinidae) from Japan and Taiwan

departmental bulletin pape

The Declined Activity in the Nucleus of NGC 1316

http://www.iop.org/EJ/abstract/1538-4357/503/1/L31/ | http://www.iop.org/EJ/abstract/1538-4357/503/1/L31/NGC 1316 (Fornax A) is a radio galaxy with prototypical double lobes, when the magnetic field intensity is accurately measured via the inverse Compton technique. The radio-emitting electrons in the lobes are inferred to have a synchrotron lifetime of similar to 0.1 Gyr. Considering the lobe energetics, we estimate the past nuclear X-ray luminosity of NGC 1316 to be at least similar to 4 x 10(34) W (4 X 10(41) ergs s(-1)). Thus, the nucleus was rather active at least 0.1 Gyr ago. In contrast, we confirmed with ASCA and ROSAT that the nucleus of NGC 1316 is very faint in X-rays at present, with the 2-10 keV luminosity of any active galactic nucleus-like hard component being less than 2 x 10(33) W (2 x 10(40) ergs s(-1)), even assuming a nuclear obscuration up to similar to 10(28) m(-2) (10(24) cm(-2)). This is at least an order of magnitude lower than the estimated past activity, indicating that the nucleus is presently very inactive. From these two results, we conclude that the nucleus of NGC 1316 has become dormant during the last 0.1 Gyr. This suggests the possible abundance of "dormant" quasars in nearby galaxies.arXiv:astro-ph/9806200v1 http://arxiv.org/abs/astro-ph/9806200textapplication/pdfjournal articl

Social-Cognition Education for Regional-Pedagogy(2) : a Study of Hino-Volunteer Network Action

departmental bulletin pape

Search for B decays into η'p, η'K^*, η'φ, η'ω and η'η^(')

We report on a search for the exclusive two-body charmless hadronic B meson decays B → η'ρ, B → η'K^*, B^0 → ηφ, B^0 → η'ω, and B0 →η'η^('). The results are obtained from a data sample containing 535×10^6 B\bar{B} pairs that were collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We find no significant signals and report upper limits in the range (0.5–6.5)×10^-6 for all of the above decays.journal articl

Observation of Large CP Violation and Evidence for Direct CP Violation in B0→π+π- Decays

journal articl

Dioxygen Activation under Ambient Conditions: Cu-Catalyzed Oxidative Amidation−Diketonization of Terminal Alkynes Leading to α-Ketoamides

Dioxygen Activation under Ambient Conditions: Cu-Catalyzed Oxidative Amidation−Diketonization of Terminal Alkynes Leading to α-Ketoamide

Dioxygen Activation under Ambient Conditions: Cu-Catalyzed Oxidative Amidation−Diketonization of Terminal Alkynes Leading to α-Ketoamides

Dioxygen Activation under Ambient Conditions: Cu-Catalyzed Oxidative Amidation−Diketonization of Terminal Alkynes Leading to α-Ketoamide

Synthesis and Structure of 2,6,14- and 2,7,14-Trisubstituted Triptycene Derivatives

A series of 2,6,14- and 2,7,14-trisubstituted triptycene derivatives were efficiently synthesized and their structures were determined by NMR, MS spectra, and X-ray analysis. These trisubstituted triptycenes are potential building blocks for constructing novel receptors and synthetic molecular machines

Exceptional Chiral Recognition of Racemic Carboxylic Acids by Calix[4]arenes Bearing Optically Pure α,β-Amino Alcohol Groups

Calixarenes bearing optically pure α,β-amino alcohol groups at their lower rim exhibit exceptional and efficient chiral recognition ability in discrimination of racemic mandelic acid, 2,3-dibenzoyltartaric acid and 2-hydroxy-3-methylbutyric acid

Triptycene-Based Expanded Oxacalixarenes: Synthesis, Structure, and Tubular Assemblies in the Solid State

Owing to the unique 3D rigid structure of triptycene, two novel expanded oxacalixarenes 5a and 5b as a pair of diastereomers were efficiently synthesized in a single step by the SNAr reaction of 2,7-dihydroxytriptycene with 2,3,5,6-tetrachloropyridine in the presence of cesium carbonate. Similarly, two pairs of other triptycene-based expanded oxaxalixaenes 7a,7b and 9a,9b could also be obtained by the SNAr reactions of 2,7-dihydroxytriptycene with 1,5-difluoro-2,4-dinitrobenzene and cyanuric chloride, respectively. The structures of the expanded oxacalixarenes were studied by NMR, MS spectra, and X-ray crystal structure analyses. It was found that the expanded oxacalixarene 9b showed a dynamic interconversion between boat and chair conformations. Moreover, we also found that the expanded oxacalixarenes 5a, 5b, and 9a could all assemble into organic tubular structures and further porous architectures in the solid state, in which chlorine bonding, such as C−Cl···Cl, C−Cl···O, and C−Cl···π interactions, played an important role