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Masaaki Kitajima Brandon C. Iker Andri T. Rachmadi Eiji Haramoto Charles P. Gerba 《Food and environmental virology》2014,6(3):213-216
Salivirus/klassevirus sequences were identified in 7 (15 %) wastewater samples collected in Arizona monthly for a year, with the highest concentration of 2.28 × 105 and 2.46 × 104 copies/L in influent and effluent, respectively. This is the first report of quantification and genetic analysis of salivirus/klassevirus in water samples in the United States. 相似文献
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Sarmila Tandukar Samendra P. Sherchan Eiji Haramoto 《Food and environmental virology》2020,12(3):260-263
This study assessed wastewater quality through the quantification of four human enteric viruses and the applicability of pepper mild mottle virus (PMMoV) a 相似文献
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Estimating the generation of recycled metals from obsolete motorcycles in Vietnam for ELV management
Kurogi Daiki Kosai Shoki Murakami Genya Phong Lai Thai Quang Nguyen Duc Huy Tran Duc Luong Nguyen Yamasue Eiji 《Journal of Material Cycles and Waste Management》2021,23(4):1563-1575
Journal of Material Cycles and Waste Management - The demand for various modes of transportation has significantly increased around the world due to rapid urbanization, the increase in population,... 相似文献
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The morphological characteristics and the population genetic structures of the fissiparous seastar Coscinasterias acutispina were investigated for eight sites in the Sea of Japan in order to clarify the presence of sexual and asexual reproduction. Morphological observation based on arm length showed that fission was common at all eight sites examined, indicating the likely production of clonal individuals. A random amplified polymorphic DNA (RAPD) marker was used to detect clones arising by fission and to assess gene flow among sites. A simulation approach using RAPD data revealed the presence of clonal individuals at almost all sites, suggesting the existence of asexual reproduction. The result of phylogenetic analysis according to RAPD genotype showed no relationship between genetic and geographic distances. Considering the limited movement ability of seastar species during the adult phase, these observations suggest the existence of marked gene flow among sites, due to dispersal of planktonic larvae produced by sexual reproduction. These observations suggest that multi-locus genotypic compositions depend on the relative amounts of recruitment from sexual and asexual reproduction in each population. 相似文献
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Sarmila Tandukar Samendra P. Sherchan Eiji Haramoto 《Food and environmental virology》2020,12(3):269-273
Monthly sampling was conducted at a drinking water treatment plant (DWTP) in Southern Louisiana, USA from March 2017 to February 2018 to determine the prev 相似文献
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In this article, we present an overview of the current circumstances of the trade of recyclable resources, i.e. end-of-life products, parts and materials, and recycled resources in Asian countries, indicating that pollution potential is spreading there due to the improper handling of those resources. Conversely, Japan’s domestic recycling activities are shown to be adversely affected by the increasing outflow of those resources on one hand and the sudden stagnation of trade on the other. Considering that cross-border resource circulation in Asia is unavoidable and desirable in certain conditions, we propose a feasible and sustainable transaction scheme of recyclable and recycled resources, exemplified by a project which was carried out by the city of Kitakyushu and the city of Tianjin. 相似文献
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Ueyama J Saito I Kondo T Taki T Kimata A Saito S Ito Y Murata K Iwata T Gotoh M Shibata E Wakusawa S Kamijima M 《Chemosphere》2012,87(11):1403-1409
A recent development in analytical chemistry has enabled us to monitor systemic organophosphorus insecticide (OP) exposure at individual levels. At present, however, limited data are currently available on urinary OP metabolite levels worldwide. The purpose of this study was to assess urinary dialkylphosphate (DAP) concentrations in Japanese workers. Urine samples were collected in both summer and winter from 339 Japanese adults who worked as food distributors (FDs, n = 164), apple farmers (AFs, n = 147) and pest control operators (PCOs, n = 28). DAPs were measured by gas chromatography-mass spectrometry after derivatization with pentafluorobenzylbromide. Dimethylphosphate (DMP), diethylphosphate (DEP), dimethylthiophosphate (DMTP) and diethylthiophosphate (DETP) were detected in the urine of over 87% of the studied populations in both seasons. The geometric mean values of total DAPs (nmol g−1 creatinine), DMP, DMTP, DEP and DETP (μg g−1 creatinine) in summer and winter were 106.7 and 98.3, 7.0 and 3.8, 3.4 and 4.5, 0.8 and 1.5, and 0.3 and 0.2 for the FDs, 440.8 and 197.7, 33.1 and 10.8, 10.1 and 5.8, 4.2 and 4.7 and 1.6 and 0.8 for the AFs, and 473.4 and 284.6, 28.9 and 22.2, 17.6 and 4.6, 3.5 and 4.4, and 0.5 and 0.6 for the PCOs, respectively, thereby revealing significantly higher concentrations in AFs and PCOs groups than in the FDs in both seasons except for winter DMTP. These DAP concentrations were approximately the same or at lower levels compared with those reported in the previous literature. This is one of the first studies to demonstrate urinary DAP concentrations in Japanese adults. 相似文献