Triassic ammonites newly discovered in the western district of Yamaguchi Prefecture, Japan.

Occupational health nurses' participation in health committee surveyed in Yamaguchi prefecture, Japan.

This survey was conducted to know the present conditions of occupational health nurses (OHNs) activity related to health committees (HCs) in Japan. Questionnaires that included items related to duties of the OH physician (OHP), those of the OHN, and their mutual duties within the HC, were mailed to 41 companies employing OHNs and questionnaires from 18 companies were analyzed. Comparison of the...

An Outbreak of Carbon Monoxide Poisoning in Yamagata Prefecture Following the Great East Japan Earthquake

Background: In the aftermath of the Great East Japan Earthquake, most of the areas in Yamagata prefecture experienced a serious power failure lasting for approximately 24 hours. A number of households were subsequently poisoned with carbon monoxide (CO) due to various causes. In this study, we conducted a survey of CO poisoning during the disaster. Methods: A questionnaire regarding CO poisonin...

Distribution of IS629 and stx genotypes among enterohemorrhagic Escherichia coli O157 isolates in Yamaguchi Prefecture, Japan, 2004–2013

Patterns of insertion sequence (IS)629, norV genotype, and Shiga toxin (Stx) genotype distribution were investigated amongst 203 enterohemorrhagic Escherichia coli O157 isolates collected in Yamaguchi Prefecture, Japan, between 2004 and 2013. A total of 114 IS629 patterns were identified; these were divided into eight IS groups (A-H). Ninety isolates carried an intact norV gene, whereas 113 iso...

Ophiuroids Discovered in the Middle Triassic Hypersaline Environment

Echinoderms have long been considered to be one of the animal phyla that is strictly marine. However, there is growing evidence that some recent species may live in either brackish or hypersaline environments. Surprisingly, discoveries of fossil echinoderms in non-(open)marine paleoenvironments are lacking. In Wojkowice Quarry (Southern Poland), sediments of lowermost part of the Middle Triassi...

An Overview of Hydrogen Sulfide Suicides Based on Police Data in Yamagata Prefecture, Japan