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In the present study, we report the identification of a sea anemone, Antennapeachia setouchi, collected in the Seto Inland Sea, which represents a new genus and new species. This new species has unusual tentacle and mesenterial arrangements that have not been observed in other species of Haloclavidae. There are 12 regular marginal tentacles and two 'antenna tentacles,' with the latter always rising upward and located on the oral disk near the mouth; the species is also characterized by its peculiar mesenterial pairs, consisting of a macrocneme and a microcneme. Furthermore, this species shows an interesting behavior: it can inflate its body like a balloon, lift above the seafloor, and drift with the sea current. The presence of a single, strong siphonoglyph, physa-like aboral end, and the lack of sphincter muscle classify this sea anemone within Haloclavidae. It resembles Peachia species, but cannot be classified in this genus as the new species has two pairs of mesenteries, consisting of a macrocneme and a microcneme, and irregular antenna tentacles. Therefore, we propose a new genus Antennapeachia to accommodate this species.

The correlation between paramagnetic defects and the electron emission in diamond films, which were deposited by the chemical vapor deposition method, has been studied using electron-spin-resonance (ESR) and field-emission measurements. The paramagnetic defects, which are a carbon dangling bond in the diamond layer (Pdia-center: g=2.003, ΔHPP=3 Oe) and a carbon dangling bond in the nondiamond phase carbon region (Pac-center: g=2.003, ΔHPP=8 Oe), exist in the diamond films. Electron emission with high current density was observed for the diamond film, which contains high spin densities for both ESR centers, because electrons are efficiently transported to the diamond surface through the defect-induced energy band(s) by hopping conduction.

By using an electron beam irradiation, reproducible active surface condition of misting can be obtained on the silicate glass. Since an electron beam irradiation activates the SiO2 surface, it controls and enhances the nucleation frequency of fine water drops. The dangling bond is one of reasons to activate the surface condition. Based on the results of electron spin resonance (ESR) spectra, the electron beam irradiation increases the density of E'-center on the surface.

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