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排序方式: 共有47条查询结果,搜索用时 15 毫秒
1.
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
2.
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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Soh Sugihara Shinya FunakawaMethod Kilasara Takashi Kosaki 《Agriculture, ecosystems & environment》2012,146(1):209-219
In Sub-Saharan Africa, conservation of available soil N during early crop growth, when N loss by leaching generally occurs, is important to improve crop productivity. In a dry tropical cropland in Tanzania, we assessed the potential role of soil microbes as a temporal N sink-source to conserve the available soil N until later crop growth, which generally requires substantial crop N uptake. We evaluated the effect of land management [i.e., no input, plant residue application before planting (P plot) with or without fertilizer application, fertilizer application alone, and non-cultivated plots] on the relationship between soil N pool [microbial biomass N (MBN) and inorganic N] and crop N uptake throughout the ∼120-d crop growth period in two consecutive years. In the P plot, MBN clearly increased (∼14.6-29.6 kg N ha−1) early in the crop growth period in both years because of immobilization of potentially leachable N, and it conserved a larger soil N pool (∼10.5-21.2 kg N ha−1) than in the control plot. Especially in one year in which N leaching was critical, increased MBN maintained a larger soil N pool in the P plot throughout the experimental period, and a delay of increased MB C:N ratio and a substantial decrease in MBN was observed, indicating better soil microbial N supply for crop N uptake during later crop growth. Therefore, plant residue application before planting should enhance the role of soil microbes as a temporal N sink-source, leading to the conservation of potentially leachable N until later phase of crop growth, especially in years in which N leaching is relatively severe. Although further studies are necessary, our results suggest that plant residue application before planting is a promising option to achieve better N synchronization. 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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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