Kanagawa Environmental Research Center

Kawasaki, Japan

Kanagawa Environmental Research Center

Kawasaki, Japan
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Kohno Y.,Japan Central Research Institute of Electric Power Industry | Matsumura H.,Japan Central Research Institute of Electric Power Industry | Miwa M.,Center for Environmental Science in Saitama | Yonekura T.,Center for Environmental Science in Saitama | And 6 more authors.
Environmental Monitoring and Assessment | Year: 2013

We developed small and mobile open top chambers (mini-OTC) measuring 0.6 m (W) × 0.6 m (D) × 1.2 m (H) with an air duct of 0.6 m (W) × 0.23 m (D) × 1.2 m (H). The air duct can be filled with activated charcoal to blow charcoal filtered air (CF) into the chamber, as opposed to non-filtered ambient air (NF). Ozone sensitive radish Raphanus sativus cv. Red Chime and rosette pakchoi Brassica campestris var. rosularis cv. ATU171 were exposed to NF and CF in mini-OTCs at different locations in East Asia. A total of 29 exposure experiments were conducted at nine locations, Shanghai, China, Ha Noi, Vietnam, Lampang, Phitsanulok and Pathumtani, Thailand, and Hiratsuka, Kisai, Abiko and Akagi, Japan. Although no significant relationships between the mean concentrations of ambient O3 during the experimental period and the growth responses were observed for either species, multiple linear regression analysis suggested a good relationship between the biomass responses in each species and the O3 concentration, temperature, and relative humidity. The cumulative daily mean O3 (ppb/day) could be indirectly predicted by NF/CF based on the dry weight ratio of biomass, mean air temperature, and relative air humidity. © 2012 Springer Science+Business Media B.V.


Tomita R.,Nihon University | Kotani T.,Fujita Corporation | Matsuda T.,Daiwa House Industry Central Research Laboratory | Yokoshima S.,Kanagawa Environmental Research Center | Izumi Y.,Railway Technical Research Institute
AIJ Journal of Technology and Design | Year: 2016

This research examined measuring positions by using questionnaire survey with presenting a hypothetical measurement example of vibration induced by human moving in a room. Results obtained by the survey were the followings. (1) For the measurement of magnitude of vibration, many respondents select the center of the room and the middle of floor surrounded by large or small beams unless the positions are identified. (2) For the measurement of the floor resistance against human movement vibration, many respondents select the center of the room, and the middle between the center and each corner of the room.


Kotani T.,Fujita Corporation | Tomita R.,Nihon University | Yokoshima S.,Kanagawa Environmental Research Center | Izumi Y.,Railway Technical Research Institute | And 2 more authors.
AIJ Journal of Technology and Design | Year: 2014

To accumulate measurements of building vibrations, Sub Committee on Measurement and Analysis of Environmental Vibration and Goto laboratory at Hosei University have jointly carried out the measurement of building vibrations caused by conventional railway in a two-story wooden apartment house since 2003. In this period, for the purpose of replacing grade crossings with overpasses, the railway structure was shifted from ground railway to elevated railway. Since measurements were obtained between before and after making elevated railway, this paper focuses on the change in the building vibration characteristics and building vibration amplifications for ground-borne vibrations.


Ota A.,Yokohama National University | Yokoshima S.,Kanagawa Environmental Research Center | Yano T.,Kumamoto University | Kawai K.,Kumamoto University | And 2 more authors.
42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life | Year: 2013

A technical subcommittee at the INCE/JAPAN has managed the Socio- Acoustic Survey Data Archive (SASDA) since 2011. The SASDA authors investigated the relationship between noise exposure and annoyance reactions to traffic noise, such as noises from road traffic, conventional railways, Shinkansen (bullet train) railways, and civil and military aircraft in Japan. Military aircraft noise was found to be the most annoying, and Shinkansen railway and civil aircraft noise were rated as the next highest in annoyance. Road traffic noise was the least annoying. The authors also investigated reactions conversation disturbances, telephone disturbances, TV/radio listening disturbances, reading/thinking disturbances, rest disturbances, disturbances when falling asleep, awakening, reluctance to open windows, and disturbances from house vibration. Military aircraft noise was apt to cause reading/thinking disturbances, Shinkansen railways led to house vibration, while conventional railways led to listening disturbances. Road traffic noise rarely caused disturbances compared with other noise types, but it was a factor in deciding whether to open windows.


Watanabe H.,Kanagawa Environmental Research Center
Carbohydrate Polymers | Year: 2010

Cellulose is the most abundant biomass in the world and constitutes a large fraction of plant biomass. The tight hydrogen-bonding network and van der Waals interactions greatly stabilise cellulose, making it notoriously resistant to hydrolysis. Hence, more efficient pre-treatment procedures are required for the conversion of cellulose to monosaccharides. In this study, the depolymerisation of cellulose and wood in ILs using a solid catalyst is performed successfully. Depolymerisation produces three types of substances: total reducing sugar (TRS), glucose and ethanol. With Avicel, yields of TRS, glucose and ethanol are 76.3% (w/w), 17.2% (w/w) and 4.2% (w/w), respectively. With wood, yields of TRS, glucose and ethanol are 25.6% (w/w), 11.5% (w/w) and 7.7% (w/w), respectively. The time courses of product yields indicates that the depolymerisation of cellulose in [C 4mim]Cl, using Dowex, is similar to the depolymerisation with concentrated H 2SO 4. © 2010 Elsevier Ltd. All rights reserved.


Nguyen T.,Kumamoto University | Yano T.,Kumamoto University | Yokoshima S.,Kanagawa Environmental Research Center | Morihara T.,Ishikawa National College of Technology
INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control | Year: 2014

The exposure-response relationships for road traffic noise annoyance in Vietnam were proposed according to over 4700 responses obtained in Hanoi, Ho Chi Minh, Da Nang, Hue and Thai Nguyen. However, the variation of the exposure-response curves found among the five cities implied that discrepancies could occur between different geographic regions like the north and the south of Vietnam. To assess the effects of acoustic and non-acoustic factors on road traffic noise annoyance in Vietnam, structural equation models were developed by linking the questionnaire items of the socio-acoustic surveys on road traffic noise annoyance conducted in the five cities. The sample sizes were 1174, 1403, 432, 592, and 633 to estimate the models for Hanoi, Ho Chi Minh, Da Nang, Hue and Thai Nguyen, respectively. The final model included three latent factors: Activity interference; sensitivity; and satisfaction with living environment. Sensitivity to noise, vibration and heat are determinants of personal sensitivity. Activity interference was measured by awakening in the sleep, rest and listening disturbance. Evaluations on quietness of living areas, preference to the living areas and comfort in the dry season are loaded in satisfaction with living environment. The model provided good model fit and indicated that sensitivity and satisfaction with living environment were the main modifiers of road traffic noise annoyance in Vietnam.


Mishima S.,Kanagawa Environmental Research Center | Asano M.,Takasaki Advanced Radiation Research Institute
Kobunshi Ronbunshu | Year: 2014

Diallyl phthalate-containing l-allyl-2-thiourea (FDA/ATU) was chemically bound on poly(styrene-co-divinylbenzene) (PSD) particle surfaces by gamma irradiation. We found that the adsorption of zinc ions increased with increasing amount of ATU on the PSD particles. The adsorption of zinc ions was strongly dependent on the pH, and the maximum effect occured in the region of pH 5-7. At pH 7, the amount of zinc adsorption increased 2.64 times compared with that of the untreated PSD particles. The adsorbed zinc ions suppressed the decomposition of Zinc bisfdimethyl-dithiocarbamate) (Ziram), and thus increased its adsorption capacity. In addition, the FDA/ATU-modified PSD particles could be repeatedly loaded and unloaded. Therefore, we established a simple and quick solid phase adsorption process for Ziram analysis using the FDA/ATU-modified PSD particles. © 2014, The Society of Polymer Science.


Yokoshima S.,Kanagawa Environmental Research Center | Yano T.,Kumamoto University | Kawai K.,Kumamoto University | Morinaga M.,Defence Facilities Environment Improvement Association | Ota A.,Yokohama National University
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

Technical subcommittee on Socio-Acoustic Survey Data Archive, which was set up in the Institute of Noise Control Engineering/Japan in 2009 has managed SAS Data Archive (SASDA) since 2011. The SASDA, an archive of data mainly concerning community response to transportation noise in Japan, is constituted of datasets deposited by the committee members and the Ministry of the Environment in Japan. The number of collected data exceed 20,000 as of December 2011. We compare dose-response curves among noises from road traffic, conventional railway, Shinkansen railway, civil aircraft, and military aircraft by Self-Defense Force and/or U.S. Military Force. We use LAeq for 24 hours and Ldn as noise metrics. Community response is measured by annoyance due to major specific noise source. Although the number of data on aircraft noise is not enough, military aircraft noise indicates the severest annoyance. The second highest annoyance is civil aircraft noise and Shinkansen Railway noise, followed by conventional railway, road traffic noises. To validate the representativeness of the dose-response curves, we discuss factors affecting the difference in annoyance.


Watanabe H.,Kanagawa Environmental Research Center | Yoshino H.,Institute of Environment and Resource Systems
Renewable Energy | Year: 2010

Since hydrogen is a renewable energy source, biohydrogen has been researched in recent years. However, there is little data on hydrogen fermentation by a leachate from a waste landfill as inoculum. We investigated hydrogen production using a leachate from an industrial waste landfill in Kanagawa prefecture. The results showed no methane gas production and the leachate was a suitable inoculum for hydrogen fermentation. The maximum H 2 yield was 2.67 mol of H 2 per mol of carbohydrate added, obtained at 30 °C and initial pH 7. The acetate and butyrate production was significant when the H 2 yield was higher. The oxidation-reduction potential analysis of the culture suggested that hydrogen-producing bacteria in the leachate were facultatively anaerobic. Scanning electron microscope observations revealed hydrogen-producing bacteria comprised bacilli of about 2 μm in length. © 2009 Elsevier Ltd. All rights reserved.


Yokoshima S.,Kanagawa Environmental Research Center | Matsumoto Y.,Saitama University | Shiraishi H.,CSIC - Center for Environmental Sciences | Ota A.,Yokohama National University | Tamura A.,Yokohama National University
42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life | Year: 2013

Many studies in Japan have clarified no railway bonus unlike Euro- American countries. To clarify a factor of the difference, the authors examined effects of house vibrations on annoyance due to ground transportation noise. Community responses to noise and vibration were obtained from the surveys which were separately carried out along trunk road, conventional and Shinkansen railways in Japan. Noise and vibration ground were measured on a site-by-site basis for each survey. As for the comparison of dose-response relationship among the modes of ground transportation, the percentage of highly annoyed persons (%HA) due to noise from Shinkansen railway was the highest, followed by conventional railway and road traffic. Likewise, ground vibration from Shinkansen railway was highest and that of road traffic was lowest at the same noise level. Then comparison of %HA according to the level of ground vibration indicated that %HA with high level vibration increased in comparison to low level vibration in each mode. In addition, rattling also contributed to the %HA; the order of the incidence was identical to that for of ground vibration. From these findings, higher annoyance induced-by railways than road traffic in Japan is contributed to the difference in house vibrations.

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