A5058272846- Indoor Air Quality and Microbial Exposure
- Odor and Emission Control Technologies
- Air Quality and Health Impacts
- Urban and spatial planning
- Air Quality Monitoring and Forecasting
- Urban Green Space and Health
- Advanced Chemical Sensor Technologies
- Urban Heat Island Mitigation
- Earthquake and Tsunami Effects
- Energy, Environment, Agriculture Analysis
- Climate Change and Health Impacts
- Innovations in Concrete and Construction Materials
- Structural Engineering and Vibration Analysis
- Conservation Techniques and Studies
- Material Properties and Applications
- Infection Control and Ventilation
- Coordination Chemistry and Organometallics
- Geriatric Care and Nursing Homes
- Adsorption and Cooling Systems
- Fluid Dynamics Simulations and Interactions
- Earthquake and Disaster Impact Studies
- Semiconductor materials and interfaces
- Water Quality Monitoring Technologies
- Noise Effects and Management
- Organoboron and organosilicon chemistry
Miyagi Gakuin Women's University
2023-2025
The University of Tokyo
1993-2018
Kumamoto University
2003-2016
Unidad de Cirugía Artroscópica
2008-2014
Shinko Electric Industries (Japan)
2010
Tokyo Metropolitan University
2009
Hyogo Prefectural Institute of Environmental Sciences
2004
Taisho Pharmaceutical (Japan)
1993
Tokyo Metropolitan Institute of Medical Science
1993
Teikyo University
1993
Abstract The relative reactivity of seven substituted aryldimethylsilanes to unsubstituted phenyldimethylsilane was examined in the reaction with dimethylgermylene which generated thermally from 7-germanorbornadiene benzene at 70 °C. Electron-withdrawing substituents enhanced reactivity, and rates could be correlated Hammett p value 1.04. Nucleophilic attack by Si–H bond postulated via a pentacoordinated intermediate where little charge separation involved.
This study aims to clarify the actual installing conditions of heating, ventilating, and air-conditioning (HVAC) systems their operations in public elementary schools based on 568 school data obtained from a nation wide investigation. Some results are shown as follows: 1) Insufficient thermal insulation air tightness were provided many buildings warm climate areas, 2) Heating almost all rooms but varied with respective 3) Air-conditioning for cooling increase especially urban 4) Ventilating...
本論文では，吸着剤の素材としての性能を動的に評価する手法を提唱する．特定のガス流路に設置した素材表面のガス吸着特性を表すパラメーターとしてシンク効率を用いた．本パラメーターは0～1の値をとり，流路中分子拡散によって吸着剤表面に到達した気体分子が完全に吸着剤に捕える場合1（完全なシンク），全く吸着しない場合0の値をとる．従来のカラム試験による動的評価と異なり，シンク効率はガス流量に依存しない値であり，また粒径や充填密度，カラム形状に無関係で素材自身の特性を表し，素材表面の吸着能を表すパラメーターである．さらに，本パラメーターを用いて除去率－流量特性の把握が可能であり，吸着筒の設計などに有効に活用することができる．本評価手法を，リモナイト脱硫剤をはじめ活性炭やガスを吸着する建材として期待されている壁材などに適用してその特性評価を実施し検証を行った．底面に吸着剤を設置したチャネルに一定濃度の硫化水素ガスを供給し，出口側の空気をアルカリ溶液に捕集してフローインジェクション分析で定量した．チャネル通過後の濃度を計測後，吸着剤の吸着率を算出し，この吸着率と流量との相関関係からシンク効率を求め...
Abstract COVID‐19 outbreaks occurred in several hospitals, and the National Institute of Infectious Diseases, local authorities, universities carried out investigations into ventilation hospitals. The results indicated that performance was insufficient to prevent aerosol infection due poor air conditioning, equipment maintenance, existing design guidelines. authors investigated guidelines for measures general patient wards with cooperation Society Air‐Conditioning Sanitary Engineers Japan...
This paper aims to establish the performance testing method for domestic air cleaners remove single gaseous chemical substance. At first, 4 experiments were performed with formaldehyde(HCHO) on 5 : (1) filtration test by concentration-decay, (2) re-circulating (3) constant-emission, and (4) constant-emission. These results suggest that type-(3) as same a penetration gas-removal filters is appropriate removal efficiency(η) arrestance of obtained from this best index evaluate performance....
This study aimed to prevent chemical air pollution and reduce its influence on occupants' health in a university building under renovation. Since starting the renovation work, status was monitored using questionnaires every summer winter. According first questionnaire collected before renovation, subjective symptoms were not observed. However, some occupants complained about odor after moving into their new rooms. Therefore, all interior materials used for construction work examined small...
This study aims to correct the widespread misconception in Japanese housing market that solid woods emit no chemical-substances, though their emissions are significantly lower than those of industrial wooden materials. Small chamber tests were carried out compare formaldehyde (HCHO) emission rate Cedar and Conventionally, it was clarified emitted less HCHO value best grade, as defined by regulations for interior However, rates 2 identical specimens under same testing conditions different,...
The purpose of this study is to standardize measuring strategy for HCHO concentration which can apply field investigation at various residences in Japan. In paper, several methods were used one room simultaneously and validated by comparison with active DNPH method. For investigation, the detector tube appropriate measure concentration. Passive method useful determination population exposure. We suggest that using monitoring tubes, measurement should be carried out 3hours after ventilation...
Abstract In Japan, there are currently no standards or codes to test the performance of portable air cleaners in removing gaseous formaldehyde (HCHO) and volatile organic compounds, which have been classified as indoor pollutants that affect human health. The purpose this study was establish a method cleaners, used remove chemical substances. developed proposed before ANSI/AHAM AC-1 established 2002. simple gas generator, original “single-pass” testing method, results for five cleaning...
本研究では，スギ角材およびスギ合板等で構成された3層構造壁材の音響透過損失をJIS A 1416，JIS 1419-1により計測・評価し，在来工法での壁材と比較した。結果は以下のとおりである。（1）今回開発した3層構造壁は在来工法壁に比べ全周波数帯域で高い空気音遮断性能が見られた。（2）3層構造壁は2000 Hzから4000 Hz帯域にかけてコインシデンス効果が現れにくかった。（3）3層構造壁は二重壁で懸念されるコンセント穴よる空気音遮断性能の低減は殆ど認められず，中心板の空気音遮断効果が確認できた。（4）RCコンクリート壁，ALC壁の片面あるいは両面にGLボンドを用いた二重あるいは三重壁においては，200 Hzから400 Hz帯域に共鳴透過による著しい遮音欠損が発生するが，今回開発したすべての3層壁材は，共鳴透過による遮音欠損は小さかった。
Indoor air quality and climate of three temporary emergency housing units in Aso City, Kumamoto Prefecture, have been measured from August 2013 to April 2014 continuously those results are reported this paper comparing with factors Tohoku region. Outdoor was introduced during the daytime through year carbon dioxide (CO2) concentrations were lower than 1000 ppm. However, CO2 very high evening especially heating cooling equipments. A mechanical ventilation system for 24-hour installed toilet...