List of Dissertation Abstract（Risk Management and Environmental Sciences Safety Management Course）
NameSupervisor

Title

Abstract
By warming ground using exhaust heat, chlorinated volatile organic compounds in soil is eluted in ground

Temperature influence on soil
Iruru

Takeshiadsorption equilibrium andAOKIKOBAYASHI

dissolution rate of chlorinatedvolatile organic compounds

water, by pumping treatment, effectively there is a possibility of soil remediation.In this study, to determine
the dissolution promoting effect of chlorinated volatile organic compounds by heating, the adsorption
equilibrium and dissolution rate at different temperature conditions were measured and analyzed.By heatingfrom 15 to 40 ℃ , the soil adsorbability decreased approximately 50, 30, 10% with trichloroethylene,dichloroethylene, vinyl chloride. By heating from 15 to 40℃, about 4 times in Black soil, 2.5 times in Sand,
3 times in loam soil, has been shown that dissolution rate becomes faster.

Non-destructive inspection method of stress, there is a Barkhausen noise (BHN) method. To the challengeof improvement of the calibration curve accuracy and complexity of the measurement, I tried to theSunaoNaoya

IIDAKASAI

Study on the sophistication ofelucidation of the BHN output trend by domain observation at the time of stress load, and the development

the stress evaluation method byof 360 ° BHN measurement system using a circular rotating magnetic field by the three-pole magnetization

the Barkhausen noise

unit. In two kinds of steel plate, describes qualitatively BHN output trend from the domain structurechanges. From BHN measurement test in residual stress, it demonstrated the BHN measurement of 360 ° ofa circular rotating magnetic field.

Eutectic mechanism analysis ofMasatakaAtsumi

ammonium dinitramide toward

ITAKURAMIYAKEdevelopment of novel liquidpropellants

Energetic Ionic Liquids (EILPs) is expected to use as novel liquid propellants. EILPs were obtained by mixing
high energetic material, Ammonium dinitramide (ADN), with amide and amine nitrate. Eutectic phenomenon
made these mixtures liquid at room temperature. Toward the development of the EILPs, understanding thephysical property and perception of propellant designing are required. In this study, eutectic phenomenon wasstudied by melting point measurement, raman spectroanalysis and ab initio calculation.

Safety and efficient operation of fire-fighting may be expected by achieving fatigue control based on science
The proposition of member'sbasis in addition to experience of field leader and self-judgement of each member.

Shu

Yasushiactive possible area estimation

Therefore, a threshold level of activity stop point and activity continuation with caution point was proposed.

Iwami

Oka

method during a fire-fighting

Three kinds of exercises were done by the fighters of fire department city of Yokohama and assessment ofactivity

fatigue condition was conducted based on changes in the biological information (electrocardiographic Rwave, respiratory metabolism etc.) during these exercises.
A variety of risk assessment of volatile organic contaminants (VOC) in soil throughout air phase was carried

Study of the assessment method

out. Furthermore, the emission to the air phase from the soil was estimated and the absorption to oil wasShunsuke

Takeshiof a variety of health risk by theexperimented and analysed. P OA which is the estimated and measured value is almost same. Evaluated forKOMIDOKOBAYASHI

volatile organic contaminants inthe three VOCs, although the Environmental Quality Standard for soil is exceeded for severalfold, there willsoil throughout air phase

be no problem in health risk. Because the estimated hazard ratios of a variety of exposure scenario in thehouse on contaminated land were found to be sufficiently low.

Analysis of electrodeposition
behavior for rare earth in ionic
Naoko

Masahiko

SASAYA

MATSUMIYA on electrochemical quartz crystalliquids

microbalance at elevatedtemperature

We previously proposed an electrodeposition method using ionic liquids as an environmentally conscious
technology for the recovery of rare earth metals.

In this study, applicability of electrochemical quartz crystal

microbalance (EQCM) at elevated temperature was proved, and the electrodeposition behaviors for Nd(III)in ionic liquids were investigated using the EQCM.

As a result, the behavior of our objective

electrodeposition was observed around -3.0 V vs. Fc/Fc+.

On the other hand, in order to obtainelectrodeposited Nd metal with high purity, it is important to controll the negative potential considering fromthe overpotential and to maintain the highly-concentrated Nd(III) in ionic liquids.
In this study, we focused on vanadocene, which is only metallocene exhibited flame inhibition effect in solid-Tomohide

Hideo

A study of flame inhibition

TAKAHASHIOHTANImechanism of vanadocene

phase. Vanadium oxides (V 2 O 3 , V 2 O 4 )assumed to be solid-phase flame inhibitor, but none of them

exhibited flame inhibition effect. In this study, we improved method for evaluating solid-phase flame
inhibition effect. Then, it was suggested that predominant effect of flame inhibition by vanadocene resultsfrom gas-phase negative catalysis.

In this study, focus material is 1,2,4-triazole-3-one (TO) for had stability and power in structure potentiallyand it made cracking mechanism of energy outbreak mechanism.The purpose of the research was take holdNaotoAtsumi

TOKUNAGAMIYAKE

Thermal decompositionof the thermal decomposition mechanism of TO from the material which let add TO and a substituent, amechanisms of Triazolechange of the resolution mechanism in the oxidizer mixture. The present study investigated a thermal analysis

derivativefor the heat behavior grasp of each material and performed generation gas analysis and qualitative analysis
for reaction mechanism grasp with incalescence. The results suggested, TO was made progress decomposition
moved from a hydrogen drawing reaction and showed exothem by polymerization reaction.
Ferrocene is a flammable substance, but when the negative catalyst cycle by decomposition of the ferrocene

TakuyaHideo

TOMITAOHTANI

Preparation and fire suppression
efficiency of ferrocenecontaining emulsions

are affected, it exhibits a high combustion inhibiting effect even in a small amount. Emulsions were preparedby dispersing the ferrocene dissolved in a solvent in water. By dissolving the ferrocene in a solvent, it ispossible to control the ferrocene concentration. Moreover, the emulsion improves the stability of the systemin the long-term storage, which is required as a fire extinguishing agent. It was evaluated the fire suppression
efficiency of emusions against the pool flame.
It is important to know explosive conditions for preventing gas explosion. However, despite the fact that some
unexpected explosion accidents were caused by nitrous oxide (N2O) , few studies have been reported on

TakuyaHideoNISHIDAOHTANI

Explosion characteristics ofexplosion characteristics of flammable gases in N2O atmospheres. In this study, we experimentallyalkanes / nitrous oxide mixture

investigated explosion characteristics (e.g., explosion limit, explosion pressure, deflagration index ) of alkane

on nitrogen additional condition(carbon number: 1 to 7) – N2O – N2

mixtures in a 0.94-L closed cylindrical vessel at ambient temperatureand pressure. The explosion characteristics of the mixtures containing N2O were compared with those ofcorresponding mixtures containing O2.

ShiroYasushi

HAGIWARA

OKA

Temperature and velocity

Understanding the characteristics of ceiling jet flow is important because most fire detectors devices areproperties of a ceiling jet

designed to operate within region. In this study, using two types of rectangular fire source was compared withgenerated from a rectangular fire

the square fire source.By comparison the results of rectangular fire source and the square source, revealed thesource impinging on anmove distance which varies from two-dimensional flow generated from a rectangular fire source to the natureunconfined ceilingof the square fire source.

To evaluate void damage as void nucleation and void growth which is the cause of ductile fracture of steel
Ryuki

Naoya

Evaluation for Void Damage bymaterials, I measured AE (acoustic emission) in case of the tensile test of the flat specimen and slotted

HATAKEYAMA KASAIAE Method and FEM Analysis

specimen. I considered the void damage behavior using AE measurement result, void observation and theFEM analysis including ductile fracture criterion (GTN model).

The main objective of the present study was to evaluate the suppression capabilities of aqueous solutions ofTaiki

Hideo

Development of throwing fire-

inorganic salts for developing throwing fire-extinguishers. The suppression trials clearly demonstrated thatFUJIOKAOHTANI

extinguishers for small fires(1) aqueous solutions of iron salts and potassium carbonate exhibit the high extinguishing capabilities and (2)the suppression efficiency is negatively correlated with the dissociation energy of iron salts.

To clarify explosion mechanism accompany with runaway polymerization of acrylic monomers, amount ofenergy release and products in each progress event were analyzed. This study focused on acrylic acid, andMichiya

Atsumi

FUJITAMIYAKE

Thermal hazard analysis on

revealed that Michael addition reaction not only induce monomer to start polymerization due to its exotherm

runaway polymerizaion ofbut also Michael adducts generates larger amount of pressure than monomer . Therefore, accumulation ofacrylic monomers

Michael adducts increase risk of crack initiation in tank. The accumulation of Michael adducts increaseinfluence of explosion due to simultaneous vapor explosion of unreacted monomer and generated water inlower filling ratio tank.

Evaluation for extraction
Takahiro

Masahiko

YAMADA

MATSUMIYA

properties and stability of
extracted rare earth complexes inionic liquid extraction systemusing β-diketone

The purpose on this study is establishment of a separation process for rare earths. For this purpose, in ionicliquid extraction system using β-diketone (Hbfa), we focused on extraction behaviors and stability ofextracted species evaluated from slope analysis, spectroscopic investigations, quantitative analysis ofcomplex formation constant and DFT calculation. As a result, it was revealed that the extracted species ofrare earths formed 1 : 3 (metal : ligands) neutral complexes, and [Dy(bfa)3] was more stable than [Nd(bfa)3]
from the complex formation constant.

Xia

Naoya

XU

KASAI

Research for Remote Field Eddy
Current Testing Probe with
Magnetic Shield

Remote Field Eddy Current Testing is selected for the quantitative evaluation about the corrosion offerromagnetic materials. As the purpose of research, RFECT Probe with Magnetic Shield is developed for thedetection of back-side flaw on flat-board steel plate. According to the amplitude and phase of the dectecting
signal, the probe's detectability can be evaluated.

Mitigation means reduction of the effects of an accident or a disaster ,which is used during or immediately
following an accident or a disaster. This paper dicussed classification of mitigation. In this study, the data ofMengmei

MichikoLIUKUMASAKIClassification of Mitigation

accident and disaster cases were analyzed using Grounded theory approach. The classification was mademeasures based on accident andbased on 18600 cases. Three cases which happened in China were studied.Mitigation scheme for accident

its valiation

was proposed according to this classification.Mitigation implemented by China authorities was compared tothe classification and its validation was discussed.This classification is expected to help us to methodicallyselect the mitigation method and to make appropriate plans.
Enzymatic reactions are generally operated under mild and aqueous conditions, which is amenable to theDan

Mieko

CHEN

KUMASAKIA Proposal of Thermal Hazard
Analysis Method for Enzymatic
Process

concept of green chemistry. There has been very little concern about the thermal risk of runaway reaction inenzymatic process, because heat accumulation inactivates enzymes and slows down the reaction rates.
However, the thermal risk of enzymatic process with the presence of thermally unstable materials is not yet
disclosed. This study investigated the thermal risk of enzymatic processes with the presence of thermallyunstable materials and proposed a thermal hazard analysis method for enzymatic process.