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We evaluated the health status of residents and the environmental risk factors of housing after flooding. Questionnaires were distributed to 595 selected households (one adult resident per household) in six areas in Japan which were severely flooded between 2004 and 2010. A total of 379 responses were obtained. Indoor dampness and visible mold growth(More)
In recent years, public health problems caused by indoor air pollution have been drawing strong public concern in Japan. After conducting extensive exposure assessment, governmental agencies have taken effective measures to solve the problem; for instance, "Guidelines for indoor air quality (IAQ)" of 13 chemicals, for example, formaldehyde, toluene, and(More)
Tetrodotoxin (TTX) was intramuscularly administered to non-toxic cultured specimens of the pufferfish Takifugu rubripes to investigate TTX transfer/accumulation profiles in the pufferfish body. In two groups of test fish administered either 50MU/individual of TTX standard (purified TTX; PTTX) or crude extract of toxic pufferfish ovary (crude TTX; CTTX), TTX(More)
From October 2006 to December 2007, wild specimens of the pufferfish Takifugu poecilonotus (93 females, 45 males) were collected from the Ariake Sea. Tissue toxicity was examined by mouse bioassay, and tetrodotoxin (TTX) content in the blood plasma by enzyme-linked immunosorbent assay. The relationship between toxicity and maturation was investigated based(More)
In this paper, we present experimental results of frequency scaling and transducer optimization in internal dielectrically transduced silicon bar resonators. We show that selective positioning of the dielectric transducers inside the resonator can preferentially excite targeted harmonics while suppressing undesired modes. Furthermore, measurements across(More)
— This paper presents a study of mechanical coupling in 2D resonator arrays for filter applications. A robust coupling design for 2D array filters, comprised of weak coupling in one dimension and strong coupling in the second, is demonstrated experimentally and compared with weakly coupled and electrically summed 2D resonator array filters. Effects of(More)
Tetrodotoxin (TTX) was intramuscularly administered to artificially hybridized specimens of the pufferfish Takifugu rubripes and Takifugu niphobles to investigate toxin accumulation in hybrids, and TTX transfer/accumulation profiles in the pufferfish body. In the test fish administered 146 MU TTX in physiologic saline, TTX rapidly transferred from the(More)
To reveal the accumulation profile of tetrodotoxin (TTX) in pufferfish Takifugu rubripes juveniles, we compared the localization of TTX in various tissues among wild juveniles and hatchery-reared juveniles with or without TTX administration using immunohistochemical technique with anti-TTX monoclonal antibody. Immuno-positive reaction was observed in(More)
Mushroom bodies (MBs) in Protophormia terraenovae were ablated by hydroxyurea (HU) treatment to larvae just after hatching in order to examine roles of the MBs in olfactory learning and photoperiodism. In all individuals the structures of the alpha, beta, and gamma lobes, the pedunculi, and the calyces of the MB were not found after HU treatment. The other(More)
As concern for Japan's aging population and shrinking workforce continues to mount, many researchers are focusing on nursing and healthcare-related robots to help ease the burden on society. In order to successfully integrate robots into the home environment to coexist with family members, three features are considered essential: safe interaction, a compact(More)