Silverfish are known as one of the major pests which feed on paper and starch-based materials and can cause serious problems in museums, libraries and archives. Ctenolepisma calvum (Ritter, 1910) was first recorded from Ceylon (now Sri Lanka) and has also been known from Central American countries including Guyana and Cuba. Recently, its rapid spread to European countries, including Austria, Czech, Germany and Norway, has been reported. In addition, there are unverified records of C. calvum from 17 more countries in the on-line citizen-science platforms iNaturalist. We report C. calvum in Japan for the first time, from Hokkaido, Miyagi, Tokyo, Fukuoka and Nagasaki Prefectures. The specimens in Japan were observed in detail by stereomicroscope, optical microscope and scanning electron microscope. The occurrence of this species is a serious problem from the viewpoint of protection of cultural properties. We also registered their mitochondrial cytochrome oxidase I (COI) gene in EMBL/GenBank/DDBJ.

Water-adsorbed states on Si, native oxide and thermal oxide surfaces are investigated by means of thermal desorption spectroscopy. D2O is used to detect the water signals from these surfaces, which are separated from background H2O signals. The water desorption is 1/10 less than the hydrogen desorption. The amount of hydrogen adsorbed is largest on the Si surface and smallest on the thermal oxide surface. Four types of binding states of hydrogen are assigned to be SiO-H and Si-H on the silicon surface, Si-H in the native oxide, and Si-H in the interface between the native oxide and the silicon substrate.

The relationship between the structural properties of TEOS/Q-NSG and deposition conditions is studied with thermal desorption spectroscopy. The principal thermally desorbed species, except for 02, are divided into two categories: H20-related species and ethoxyl-group-related species. Most part of the H20-related species, such as H20, OH, O and H2, are generated from silanol groups rather than actual water in the oxide. In contrast with O-atom desorption, O2-molecule desorption is not synchronized with H20 desorption. It is likely that desorbed O2 has its origin in ozone included in the source gas. The ethoxyl-group-related species, including OC2H5, OC2H4, C2H~, and C2H4, arise from components that have been incorporated into the oxide atomic network due to the incompleteness of TEOS decomposition. The dependence of thermal desorption spectra on source-gas composition and deposition temperature is described.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 130.126.162.126 Downloaded on 2015-03-13 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 130.126.162.126 Downloaded on 2015-03-13 to IP

No abstract

No abstract