Yukio Yanagisawa
Biographic Data
| ID | 5600974 |
|---|---|
| NAME | Yukio Yanagisawa |
| GIVEN NAMES | Yukio |
| FAMILY NAME | Yanagisawa |
| SIGNATURE | YANAGISAWA Y |
| AFFILIATIONS | The University of Tokyo |
| VERIFIED | No |
| TOTAL WORKS | 16 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 16 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1998 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 0 |
Measurements of Volatile Organic Compounds in a Newly Built Daycare Center
We measured temporal changes in concentrations of total volatile organic compounds (TVOCs) and individual volatile organic compounds in a newly built daycare center. The temporal changes of the TVOC concentrations were monitored with a photo ionization detector (PID), and indoor air was sampled and analyzed by Gas Chromatography/Mass Spectrometry (GC/MS) and high performance liquid chromatography (HPLC) to determine the concentrations of the cons…
Optimized Arrangement of Constant Ambient Air Monitoring Stations in the Kanto Region of Japan
Continuous ambient air monitoring systems have been introduced worldwide. However, such monitoring forces autonomous communities to bear a significant financial burden. Thus, it is important to identify pollutant-monitoring stations that are less efficient, while minimizing loss of data quality and mitigating effects on the determination of spatiotemporal trends of pollutants. This study describes a procedure for optimizing a constant ambient air…
In-situ Real-Time Monitoring of Volatile Organic Compound Exposure and Heart Rate Variability for Patients with Multiple Chemical Sensitivity
In-situ real-time monitoring of volatile organic compound (VOC) exposure and heart rate variability (HRV) were conducted for eight multiple chemical sensitivity (MCS) patients using a VOC monitor, a Holter monitor, and a time-activity questionnaire for 24 h to identify the relationship between VOC exposure, biological effects, and subjective symptoms in actual life. The results revealed no significantly different parameters for averaged values su…
A Cluster Analysis of Constant Ambient Air Monitoring Data from the Kanto Region of Japan
This study demonstrates an application of cluster analysis to constant ambient air monitoring data of four pollutants in the Kanto region: NOx, photochemical oxidant (Ox), suspended particulate matter, and non-methane hydrocarbons. Constant ambient air monitoring can provide important information about the surrounding atmospheric pollution. However, at the same time, ambient air monitoring can place a significant financial burden on some autonomo…
Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine
The irreversible removal of acetaldehyde from indoor air via a chemical reaction with amino acids was investigated. To compare effectiveness, five types of amino acid (glycine, l-lysine, l-methionine, l-cysteine, and l-cystine) were used as the reactants. First, acetaldehyde-laden air was introduced into aqueous solutions of each amino acid and the removal abilities were compared. Among the five amino acids, l-cysteine solution showed much higher…
Development of a Combined Real Time Monitoring and Integration Analysis System for Volatile Organic Compounds (VOCs)
A combined integration analysis and real time monitoring (Peak Capture System) system was developed for volatile organic compounds (VOCs). Individual integration analysis and real time monitoring can be used to qualitatively and quantitatively analyze VOCs in the atmosphere and in indoor environments and determine the variation in total VOC (TVOC) concentration with time, respectively. In the Peak Capture System, real time monitoring was used to …
Measurement of Secondary Products During Oxidation Reactions of Terpenes and Ozone Based on the PTR-MS Analysis
Continuous measurements using proton transfer reaction mass spectrometry (PTR-MS) can be used to describe the production processes of secondary products during ozone induced oxidation of terpenes. Terpenes are emitted from woody building materials, and ozone is generated from ozone air purifiers and copy machines in indoor environments. Carbonyl compounds (CCs) are emitted by human activities such as smoking and drinking alcohol. Moreover, CCs ar…
Estimation of Uncertainty in Tracer Gas Measurement of Air Change Rates
Simple and economical measurement of air change rates can be achieved with a passive-type tracer gas doser and sampler. However, this is made more complex by the fact many buildings are not a single fully mixed zone. This means many measurements are required to obtain information on ventilation conditions. In this study, we evaluated the uncertainty of tracer gas measurement of air change rate in n completely mixed zones. A single measurement wit…
A Novel Methodology to Evaluate Health Impacts Caused by VOC Exposures Using Real-Time VOC and Holter Monitors
While various volatile organic compounds (VOCs) are known to show neurotoxic effects, the detailed mechanisms of the action of VOCs on the autonomic nervous system are not fully understood, partially because objective and quantitative measures to indicate neural abnormalities are still under development. Nevertheless, heart rate variability (HRV) has been recently proposed as an indicative measure of the autonomic effects. In this study, we used …
Concerns About Data and Methodology in Multiple Chemical Sensitivity Paper
Kumano, Hiroaki; Saito, Mariko; Yoshiuchi, Kazuhiro; Kokubo, Naomi; Ohashi, Kyoko; Yamamoto, Yoshiharu; Shinohara, Naohide; Yanagisawa, Yukio; Sakabe, Kou; Miyata, Mikio; Ishikawa, Satoshi; Kuboki, Tomifusa Author Information
Symptom Profile of Multiple Chemical Sensitivity in Actual Life
Objective: This study was conducted to confirm the definition of multiple chemical sensitivity (MCS) in actual life: that multiple symptoms are provoked in multiple organs by exposure to, and ameliorated by avoidance of, multiple chemicals at low levels. We used the Ecological Momentary Assessment to monitor everyday symptoms and the active sampling and passive sampling methods to measure environmental chemical exposure. Methods: Eighteen patient…
Temporal Variation of Radiocarbon Concentration in Airborne Particulate Matter in Tokyo
The temporal radiocarbon variation (in terms of percent Modern Carbon: pMC) of size-fractionated airborne particulate matter (APM) collected in Tokyo between April 2002 and February 2003 was analyzed in order to get an insight into the sources of carbonaceous particles. Results indicated significant biogenic origins (approximately 40 pMC on average). In general, the seasonal and particle size variations in pMC were relatively small, with 2 except…
Environmental Fate of Gallium Arsenide Semiconductor Disposal
This article describes a methodology for the quantitative assessment of the environmental fate of gallium and arsenic from the disposal of mobile phones containing gallium arsenide (GaAs) semiconductors, using data from Japan. The product lifetime of mobile phones is short, and the recycling systems for such phones are currently underdeveloped. As a result, many mobile phones are disposed of via incineration and landfilling. The disposal of GaAs …
An Integrated Computational Infrastructure for a Virtual Tokyo Concepts and Examples
The evaluation of tradeoffs between technologies and policies for mitigation of environmental problems requires a systematic investigation of effects over the entire region under consideration. When attempting to model such large complex systems, issues such as usability, maintenance, and computing efficiency often become major modeling barriers. In this work a software prototype for integrating the services of computational models over the Inter…
Saving Energy versus Saving Materials
To reduce energy consumption and carbon dioxide (CO 2 ) emissions in housing construction, the energy‐intensive processes and life‐cycle stages should be identified and integrated. The environmental impact of vertically integrated factory‐built homes (VIHs) constructed with increased material inputs in Japan's northern island of Hokkaido was assessed using life‐cycle inventory (LCI) analysis methods. Manufacturing process energy and CO 2 intensit…
Determinants of nitrogen dioxide concentrations in indoor ice skating rinks
OBJECTIVES: The combination of poor ventilation and fuel-powered ice resurfacers has resulted in elevated nitrogen dioxide (NO2) concentrations in many indoor ice skating rinks. This study examined the factors influencing concentrations and the effects of various engineering controls in ice rinks with different resurfacer fuels. METHODS: Indoor NO2 concentrations were measured in 19 enclosed ice skating rinks over 3 winters by means of passive sa…
No prominent works on this page.
Determinants of nitrogen dioxide concentrations in indoor ice skating rinks
OBJECTIVES: The combination of poor ventilation and fuel-powered ice resurfacers has resulted in elevated nitrogen dioxide (NO2) concentrations in many indoor ice skating rinks. This study examined the factors influencing concentrations and the effects of various engineering controls in ice rinks with different resurfacer fuels. METHODS: Indoor NO2 concentrations were measured in 19 enclosed ice skating rinks over 3 winters by means of passive sa…
Saving Energy versus Saving Materials
To reduce energy consumption and carbon dioxide (CO 2 ) emissions in housing construction, the energy‐intensive processes and life‐cycle stages should be identified and integrated. The environmental impact of vertically integrated factory‐built homes (VIHs) constructed with increased material inputs in Japan's northern island of Hokkaido was assessed using life‐cycle inventory (LCI) analysis methods. Manufacturing process energy and CO 2 intensit…
An Integrated Computational Infrastructure for a Virtual Tokyo Concepts and Examples
The evaluation of tradeoffs between technologies and policies for mitigation of environmental problems requires a systematic investigation of effects over the entire region under consideration. When attempting to model such large complex systems, issues such as usability, maintenance, and computing efficiency often become major modeling barriers. In this work a software prototype for integrating the services of computational models over the Inter…
Environmental Fate of Gallium Arsenide Semiconductor Disposal
This article describes a methodology for the quantitative assessment of the environmental fate of gallium and arsenic from the disposal of mobile phones containing gallium arsenide (GaAs) semiconductors, using data from Japan. The product lifetime of mobile phones is short, and the recycling systems for such phones are currently underdeveloped. As a result, many mobile phones are disposed of via incineration and landfilling. The disposal of GaAs …
Temporal Variation of Radiocarbon Concentration in Airborne Particulate Matter in Tokyo
The temporal radiocarbon variation (in terms of percent Modern Carbon: pMC) of size-fractionated airborne particulate matter (APM) collected in Tokyo between April 2002 and February 2003 was analyzed in order to get an insight into the sources of carbonaceous particles. Results indicated significant biogenic origins (approximately 40 pMC on average). In general, the seasonal and particle size variations in pMC were relatively small, with 2 except…
Symptom Profile of Multiple Chemical Sensitivity in Actual Life
Objective: This study was conducted to confirm the definition of multiple chemical sensitivity (MCS) in actual life: that multiple symptoms are provoked in multiple organs by exposure to, and ameliorated by avoidance of, multiple chemicals at low levels. We used the Ecological Momentary Assessment to monitor everyday symptoms and the active sampling and passive sampling methods to measure environmental chemical exposure. Methods: Eighteen patient…
Concerns About Data and Methodology in Multiple Chemical Sensitivity Paper
Kumano, Hiroaki; Saito, Mariko; Yoshiuchi, Kazuhiro; Kokubo, Naomi; Ohashi, Kyoko; Yamamoto, Yoshiharu; Shinohara, Naohide; Yanagisawa, Yukio; Sakabe, Kou; Miyata, Mikio; Ishikawa, Satoshi; Kuboki, Tomifusa Author Information
Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine
The irreversible removal of acetaldehyde from indoor air via a chemical reaction with amino acids was investigated. To compare effectiveness, five types of amino acid (glycine, l-lysine, l-methionine, l-cysteine, and l-cystine) were used as the reactants. First, acetaldehyde-laden air was introduced into aqueous solutions of each amino acid and the removal abilities were compared. Among the five amino acids, l-cysteine solution showed much higher…
Development of a Combined Real Time Monitoring and Integration Analysis System for Volatile Organic Compounds (VOCs)
A combined integration analysis and real time monitoring (Peak Capture System) system was developed for volatile organic compounds (VOCs). Individual integration analysis and real time monitoring can be used to qualitatively and quantitatively analyze VOCs in the atmosphere and in indoor environments and determine the variation in total VOC (TVOC) concentration with time, respectively. In the Peak Capture System, real time monitoring was used to …
Measurement of Secondary Products During Oxidation Reactions of Terpenes and Ozone Based on the PTR-MS Analysis
Continuous measurements using proton transfer reaction mass spectrometry (PTR-MS) can be used to describe the production processes of secondary products during ozone induced oxidation of terpenes. Terpenes are emitted from woody building materials, and ozone is generated from ozone air purifiers and copy machines in indoor environments. Carbonyl compounds (CCs) are emitted by human activities such as smoking and drinking alcohol. Moreover, CCs ar…
Estimation of Uncertainty in Tracer Gas Measurement of Air Change Rates
Simple and economical measurement of air change rates can be achieved with a passive-type tracer gas doser and sampler. However, this is made more complex by the fact many buildings are not a single fully mixed zone. This means many measurements are required to obtain information on ventilation conditions. In this study, we evaluated the uncertainty of tracer gas measurement of air change rate in n completely mixed zones. A single measurement wit…
A Novel Methodology to Evaluate Health Impacts Caused by VOC Exposures Using Real-Time VOC and Holter Monitors
While various volatile organic compounds (VOCs) are known to show neurotoxic effects, the detailed mechanisms of the action of VOCs on the autonomic nervous system are not fully understood, partially because objective and quantitative measures to indicate neural abnormalities are still under development. Nevertheless, heart rate variability (HRV) has been recently proposed as an indicative measure of the autonomic effects. In this study, we used …
A Cluster Analysis of Constant Ambient Air Monitoring Data from the Kanto Region of Japan
This study demonstrates an application of cluster analysis to constant ambient air monitoring data of four pollutants in the Kanto region: NOx, photochemical oxidant (Ox), suspended particulate matter, and non-methane hydrocarbons. Constant ambient air monitoring can provide important information about the surrounding atmospheric pollution. However, at the same time, ambient air monitoring can place a significant financial burden on some autonomo…
Optimized Arrangement of Constant Ambient Air Monitoring Stations in the Kanto Region of Japan
Continuous ambient air monitoring systems have been introduced worldwide. However, such monitoring forces autonomous communities to bear a significant financial burden. Thus, it is important to identify pollutant-monitoring stations that are less efficient, while minimizing loss of data quality and mitigating effects on the determination of spatiotemporal trends of pollutants. This study describes a procedure for optimizing a constant ambient air…
In-situ Real-Time Monitoring of Volatile Organic Compound Exposure and Heart Rate Variability for Patients with Multiple Chemical Sensitivity
In-situ real-time monitoring of volatile organic compound (VOC) exposure and heart rate variability (HRV) were conducted for eight multiple chemical sensitivity (MCS) patients using a VOC monitor, a Holter monitor, and a time-activity questionnaire for 24 h to identify the relationship between VOC exposure, biological effects, and subjective symptoms in actual life. The results revealed no significantly different parameters for averaged values su…
Measurements of Volatile Organic Compounds in a Newly Built Daycare Center
We measured temporal changes in concentrations of total volatile organic compounds (TVOCs) and individual volatile organic compounds in a newly built daycare center. The temporal changes of the TVOC concentrations were monitored with a photo ionization detector (PID), and indoor air was sampled and analyzed by Gas Chromatography/Mass Spectrometry (GC/MS) and high performance liquid chromatography (HPLC) to determine the concentrations of the cons…
Environmental Science (10 works) · Chemistry (9 works) · Computer Science (5 works) · Environmental Chemistry (5 works) · Indoor Air Quality and Microbial Exposure (5 works) · Meteorology (5 works) · Engineering (4 works) · Medicine (4 works) · Volatile organic compound (4 works) · Advanced Chemical Sensor Technologies (3 works)