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31.
Kazuya Yasuhara Hideo Komine Hiromune Yokoki Takeshi Suzuki Nobuo Mimura Makoto Tamura Guangqi Chen 《Sustainability Science》2011,6(2):219-232
Humanity faces an increasing possibility that unusual and extreme natural disasters will increase, compounded with climate
change, including global warming. These compound events are designated as compounded natural hazards in this study. A methodology
must be developed for predicting what events and risks will confront future societies, to propose countermeasures and adaptation
strategies against these events, and to evaluate the influences of compound disasters on infrastructure which is particularly
situated near coasts and rivers. Based on the above-stated background and demands, this study was undertaken with the intention
of upgrading the methodology for estimating effects on infrastructure of compound events such as increased typhoon and rainfall
severity caused by global warming occurring concurrently with a great earthquake in Japan. Such a methodology is expected
to contribute to progress in the fields of natural disaster mitigation and land preservation, particularly benefiting coastal
and river areas in Japan. Additionally in this study, risk and economic loss analyses for the possible occurrence of compound
disasters for coastal infrastructure and foundations are produced for establishing environmental strategies at the governmental
level. The authors further propose adaptation strategies and techniques as countermeasures against these events. 相似文献
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Polybrominated diphenyl ethers and persistent organochlorines in Japanese human adipose tissues 总被引:6,自引:1,他引:5
Kunisue T Takayanagi N Isobe T Takahashi S Nose M Yamada T Komori H Arita N Ueda N Tanabe S 《Environment international》2007,33(8):1048-1056
The present study determined concentrations of polybrominated diphenyl ethers (PBDEs) and persistent organochlorines (OCs) in Japanese human adipose tissues collected during 2003–2004. Concentrations of PBDEs in adipose tissues were 1–2 orders of magnitude lower than those of OCs. However, observed PBDE congener levels in this study were relatively higher than those in Japanese human adipose tissues collected during 2000 reported previously, while OC levels were comparable to those in specimens collected during 1999 reported by our group. In addition, no age-dependent accumulation of PBDEs was observed, while OC levels except chlordane compounds increased with age. These results indicate recent human exposure to PBDEs in Japan. Among PBDE congeners accumulated in Japanese adipose tissues, BDE-153 was dominant, but this trend was different from those in human milk (BDE-47) and blood (BDE-209) reported previously in Japan, implying the congener-specific kinetics in human bodies. The significant positive correlations between PBDEs and OCs were observed in Japanese adipose tissues, indicating the similar exposure route of these contaminants for Japanese citizens, probably via fish intake. 相似文献
35.
Ryoki Asano Kiyohide Kubori Yuhei Ozutsumi Nozomi Yamamoto Kenichi Otrawa Yutaka Nakai 《Journal of environmental science and health. Part. B》2013,48(2):122-127
Livestock manure is suitable for use as a composting material. However, various intestinal microbes, such as Escherichia coli, are significant components of such manures. Thus, it is desirable that the level of intestinal microbes, and particularly opportunistic pathogens, in compost is inspected and counted regularly. The sensitivity and specificity of detection of E. coli in compost have been improved by selective cultivation followed by colony polymerase chain reaction (PCR) using the ECO primer. Indeed, the sensitivity of this method is higher than that of DNA extraction from compost and PCR. In this study, changes in numbers of E. coli present in a field-scale composting process over time was assessed using selective cultivation and colony PCR. Numbers of ECO-positive colonies after 24 h decreased, with a concomitant rise in compost temperature. ECO-positive colonies were not detected from 33 to 48 h. However, ECO-positive colony numbers increased beginning on day 4 and continuing until day 42. Thus, it seems likely that the high temperatures reached during the composting process did not affect E. coli numbers in the final compost. Additionally, selective cultivation followed by colony PCR using specific primers is an appropriate method of determining levels of cultivable pathogens in composted materials. 相似文献
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Risa Kakimoto Masayoshi Ichiba Akiko Matsumoto Kunihiko Nakai Nozomi Tatsuta Miyuki Iwai-Shimada Momoko Ishiyama Noriko Ryuda Takashi Someya Ieyasu Tokumoto Daisuke Ueno 《Environmental science and pollution research international》2018,25(17):16309-16315
Risk assessment of infant using a realistic persistent organic pollutant (POP) exposure through breast milk is essential to devise future regulation of POPs. However, recent investigations have demonstrated that POP levels in breast milk collected from the same mother showed a wide range of variation daily and monthly. To estimate the appropriate sample size of breast milk from the same mother to obtain reliable POP concentrations, breast milk samples were collected from five mothers living in Japan from 2006 to 2012. Milk samples from each mother were collected 3 to 6 times a day through 3 to 7 days consecutively. Food samples as the duplicated method were collected from two mothers during the period of breast milk sample collection. Those were employed for POP (PCBs, DDTs, chlordanes, and HCB) analysis. PCB concentrations detected in breast milk samples showed a wide range of variation which was maximum 63 and 60% of relative standard deviation (RSD) in lipid and wet weight basis, respectively. The time course trend of those variations among the mothers did not show any typical pattern. A larger amount of PCB intake through food seemed to affect 10 h after those concentrations in breast milk in lipid weight basis. Intraclass correlation coefficient (ICC) analyses indicated that the appropriate sample size for good reproducibility of POP concentrations in breast milk required at least two samples for lipid and wet weight basis. 相似文献
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