List of Dissertation Abstract (Department of Artificial Environment)
NameSupervisor

Title

Abstract

YAN CHUYUEEndo Satoru

Energy consumption forecast andlow-carbon scenario construction
for residential and transportation
sectors in a medium mountain area

ZHAN
GZIWEISHUSAThe Impact of Knowledge
YOSHIKAZU Absorptive capacity on theOverseas Expansion of Chinese
Unicorn Firms

Depopulation and aging are becoming more and more
serious in Japan's mountainous village areas. In order tominimize the environmental burden in rural areas and tosolve social and environmental problems in an integrated
manner, low-carbon scenarios were developed in
Hidakagawa Town, Wakayama Prefecture, taking into
account the consolidation of scattered depopulated
villages, a migration measure, and energy-saving
measures such as energy-saving renovations, solar
Knowledge is an important resource for economic
development and an important resource for firms tomaintain their competitive advantage. This paper
summarizes previous research on knowledge absorptive
capacity, factors affecting knowledge absorptive capacity,and the relationship between knowledge absorptive
capacity and firm innovation outcomes. Next, wesummarize the characteristics of overseas expansion andthe role of knowledge absorptive capacity factors for
traditional manufacturing firms. Through interviews, wewill gather information for the current study and analyze
whether factors at different stages of overseas expansion
play a commensurate role. According to the results, theinfluencing factors of knowledge absorptive capacity ofInternet unicorn firms in the pre-, mid-, and late stages ofoverseas expansion are mainly developed from fiveinfluencing factors: firm's existing knowledge, employee
training and institutional support,organizational
structure, firm's change attitude, and external support.

AIDA
TakuyaFUJII Makiko The chemical-structure analysis forpolyol esters using sub-critical fluid
decomposition

Aoki Yusuke

Shiraishi
Toshihiko

An experimental study of force field
control under water by acoustic
holography for ultrasound therapy

In this study, the chemical-structure analysis method forfunctional molecules using sub-critical fluid
decomposition was evaluated. The polyol esters with
undisclosed chemical structure and composition wereused as model samples. From the obtained mass spectra,
the formulation of fatty acids and polyols used for thesynthesis of these polyol esters could be identified. In
addition, the chemical structure of the molecules
contained in the model samples could be determined by
the combination of fatty acids and polyols. As a results, it
was revealed that the sub-critical fluid decomposition as apreprocessing for mass spectrometry enable us the precise
chemical structure analysis.
Recent studies reported that Low intensity pulsed
ultrasound (LIPUS) stimulation could have effects on
various disease. However, conventional devices cannot
control force field. For promoting the healing effect oradvanced therapy, acoustic holography providing desired
force fields should be used for LIPUS. However, acoustic
holography cannot form arbitrary shaped force fields andhasn’t used in vivo and underwater for therapy. In thisstudy, therefore, we designed a simple force field forming
device under water and evaluate its performanceexperimentally. The experimental result indicates thepossibility that acoustic holography can form effective
shaped force field for therapy.

AbeTetsuya

Hondo Hiroki Impacts of different heat consumers To mitigate global warming, there are expectations forand regions on CO2 emissions ofwood biomass as energy sources that can contribute to thewoody biomass heat supply systems low-carbonization of the heat sector. The aim of thisstudy is to provide information for technology selection bycomparing and analyzing the CO2 emissions of district
and individual heat supply using wood biomass. The
results of the estimation suggest that small-scaleconsumers may be suitable for the introduction of woodbiomass district heating systems, as the advantages ofheat source equipment consolidation are greater than the
disadvantages of circulating pump power consumption.
Igosawa Tatsuki Matsumiya
Recovery of tungsten compounds
A novel hydrometallurgical process involving leaching,
Masahikofrom spent tungstophosphate
precipitation, solvent extraction (SX) using phosphoniumcatalyst by hydrometallurgy
based ionic liquids (ILs), and crystallization stripping wasdeveloped in this study. Alamine336 and phosphoniumbased ILs were used as the extractant and the diluent,respectively. A series of hydrometallurgical process
enabled us to conclude that small amount of PO43- wasseparated and W(VI) was efficiently recovered from thespent tungstophosphate catalyst. In addition, the related
thermodynamic result indicated that the positive enthalpy
for W(VI) and favored the endothermic nature of theextraction and stripping reaction.

Ishida Miwa

Matsumoto
ShinyaCrystal morphology of abisazomethine dye

IwamotoChisakiOka Yasushi

A new model to predict density
jump position of ceiling-jet andattenuation of ceiling-jet
temperature in tunnel fires

The crystals of a bisazomethine dye called DE2, a kind offunctional dye, were found to exhibit a reversible singlecrystal phase transition at around 430 K with a reversible
dynamical behavior. The crystal of DE2 was also known to
exhibit a variety of crystal shapes such as platelets,
needles and prisms. This work was devoted toinvestigation of the relationship between crystallization
conditions and crystal morphology of DE2 crystals. I
found 6 unusual-shaped crystals of DE2 from different
crystallization conditions. The observed unusual-shaped
crystals were also analyzed by using X-ray crystallography
and they were all characterized as the same crystal phaseof the reported room temperature phase of DE2.
A model tunnel fire experiment was conducted to propose
a prediction formula that can consider the effect of the
not only the cross-sectional shape but also the heat release
rate for the density jump position, which is the starting
point of the normal flow area of the ceiling-jet that occurs
during a tunnel fire. Then, this prediction formula wasintroduced as a reference position of the simple
temperature attenuation formula, and the attenuation
formula was made into a closed equation system.

UETA RYOHEI SHIRAISHI
Study of the Effect of Mechanical
TOSHIHIKO Vibration on the Migration ofCultured Osteoblast

Usuki Kyoshiro

Kumasaki
Mieko

Synthesis of ferrocene derivatives
with flame retardant structures andevaluation of their fire suppression
effects.

The contents of the cell's dynamic sensing mechanisms
are unknown. The same is true for osteoblasts, whosemechanism for promoting bone formation in response tomechanical stimuli is unknown. In a previous study, when
vibrations are applied, the cells become multilayered,unlike normal monolayer growth, and can be cultured inlarge quantities. To elucidate the mechanism, we focusedon cell migration and performed a single Wound healing
assay and found that the migration speed of the groupsubjected to vibration was slower than that of the control
group. In this study, reproducibility was examined, but
this was not found, and no difference in speed wasobserved between the two groups. In the future, it isnecessary to change the vibration conditions and the
movement indexes of interest.
The number of fire fatalities is expected to increase inJapan, where the population is ageing, and there is a needfor high-performance fire extinguishing agents for fire
extinguishers that contribute to achieving initial fire
extinguishing. This study aimed to improve the
combustion-suppressing effect by adding a flameretardant structure to the ferrocene, a metal complex. The
synthesis of the target substance was confirmed using
analytical equipment and its performance was evaluatedusing the filter paper combustion method and the cup
burner method. The results showed that the substance did
not have a fire suppression effect.

Umebori
MizukiIto Akihiko

Synthesis of AlCrN hard coatings
using chemical vapor deposition

Cubic AlCrN (c-AlCrN) has excellent mechanicalproperties and oxidation resistance, and thus c-AlCrN
coatings on cemented carbide tools improve tool
performance and reduce material comsumption. In thepresent study, AlCrN-based films were synthesized on
cemented carbide substrate using chemical vapor
deposition and their phase composition, microstruture,and mechanical properties were studeid.

Okamura Riku

Shiraishi
ToshihikoVibration Suppression by Variable
Stiffness Device Using
Magnetorheological Grease

We investigate a control law to realize variable stiffness byusing the shear-type magnetorheological (MR) grease
device. MR grease changes its own apparent viscosity
depending on applied magnetic field. Variable stiffness
device enables vibration suppression by changing
structural natural frequencies according to the vibration
condition. In this study, using the shear-type device which
has a very wide dynamic range, we propose a control law
to realize variable stiffness. Furthermore, we
experimentally investigated the effect of the variable
stiffness, especially the negative stiffness with the control
law using a one-DoF small structure.

Kawamura Yuka Oya Masaru

Good tactile sensation andphysicochemical properties of
foaming hand soap

Kitadani
Hoshito

Frictional force measurement of ametal wire sliding in a circularchannel using hydrogel

TanakaYoshimiIn recent years, there has been an increasing need forbody cleansers to improve the feeling of use, such as thetactile feel of the foam, so it is necessary to evaluate thesefoams correctly. Therefore, in this research, in order tofind out what kind of feeling is preferred by people whencomparing products with good "foaming", we focused on
foaming hand soap and conducted an experiment toestablish a quantitative evaluation method for foam. gone.
Structural covariance analysis was used to uncover thecomplex components of foam tactile feel and to explore
correlations with physicochemical test measurements.
Soft tubes made of dry materials such as plastic, rubber,and elastomer are widely used as practical products. On
the other hand, hydrogel tubes as wet materials are known
to achieve much lower friction than dry materials. In thisstudy, we measure the frictional force due to the line
contact of a metal wire sliding in a channel with acomplicated shape in cylindrical hydrogels prepared
under various gelation conditions, and clarify the
relationship between the gelation conditions and thefrictional force.

Kinoshita
Ryoma

Matsumiya
Masahiko

Ion-pairing extraction and theirreaction modeling of anionic M-Cl
species with cationic
NTAamide(C6) extractant

KoizumiKatsuhiro

AramakiKenjiMedia effect on fiber formation insurfactant-mediated gelation
methodSolvent extraction is conducted using a total of 20 di-, tri-,
and tetravalent metals, revealing high stability constants
with Cl– and the N,N,Nʹ,Nʹ,Nʺ,Nʺ-hexahexylnitrilotriacetamide (NTAamide(C6)) extractant. Most of
the metal ions in this study display higher distribution
ratios (D(M)) from HCl than those from HNO3, although
NO3– hardly forms metal-complexes, and exhibit 1:1
stoichiometries with NTAamide, based on the slopes ofacid and metal extraction. Following the experimental
results, the association constants and distribution
coefficients of the group 12 elements Zn2+, Cd2+, and Hg2+
are calculated via ion-pair extraction modeling using DFT
calculations. and the simulations of D yield calculated
values with the same trend as that of the measured values.
Previous studies have reported that hydrogels can beformed using surfactant molecular aggregates and lowmolecular-weight organogelators. The purpose of thisstudy was to investigate the change of fibers caused bychanging the gel medium. As a result, differences wereconfirmed in the formation process of gel fibers and thecharacteristics of fibers such as length, thickness, andnumber of fibers. In addition, it was confirmed that thecorrelation of the sol-gel transition temperature isreversed in the gel with the cubic phase as the medium.

Kosuge Tonan

Ito AkihikoPreparation of MgWO4 films usingchemical vapor deposition and theirluminescence properties

Kondo Yuhei

Shibutani
Tadahiro

Analysis of Fracture Behavior of
Nuclear Piping under Seismic
Loading

Metal tangstates is used as phosphors and scintillators.
Magnesium tungstate (MgWO4) is a promising
scintillation material; however, reported values on
scintillation light yield are smaller than expected value. It
might be due to phase transition or contamination duringmelt-solidification process. In the present study, MgWO4
films were prepared by chemical vapor deposition andtheir photo- and radio-luminescence properties werestudied.
The safety of nuclear power systems must be further
enhanced in the future. Among the many factors that
contribute to accident risk, we will focus on nuclear
piping and elaborate material properties up to the point
just prior to rupture in order to accurately evaluate theultimate event that exceeds the design limit. For thispurpose, we aim to improve the accuracy of the analysis ofpiping systems by conducting tensile tests using
specimens cut from the pipes and applying the true stressstrain diagram up to the rupture to the analysis.

Saiki Ayaka

Oya Masaru

Removal mechanism of mud, wine,and curry stains and evaluation ofcleaning power

Sato Masaya

MiyakeAtsumi

Estimation of heat of formation forchlorosilanes based on group
additivity values obtained bymachine learning

Stain removal is widely used in households. However, few
studies have numerically or chemically investigated whichcleaning method is best. In this study, we focused on
three types of difficult-to-remove stains: mud, red wine,and curry stains, which have different properties. The
data were quantified by calculating the cleaning rate fromthe stained cloths before and after cleaning, and thecleaning power was evaluated for each condition.
Furthermore, we investigated the mechanism of stain
removal and effective cleaning methods for each stain.
The aim of this study is to extend group additivity
methods to Si-H-O-Cl containing species. Heats offormation for small silane compounds were obtainedusing quantum chemical calculation, and groups of eachcompounds were counted. These were used as training
data and the group additivity values (GAVs) were
determined by machine learning. To validate GAVs,
comparison between estimated heats of formation andquantum chemical calculation results was conducted, withestimated results and quantum chemical calculation
results showing good agreement. Heats of formation forlarge silane compounds containing Si-H-O-Cl were
estimated based on GAVs.

Shigemura
MeguruEndo Akira

Regional Impact of Japanese
Prefectural Capitals on
Technological Diversification:
Quantitative Analysis Using Patent
Data

ShinatoTomoyaShiraishi
Toshihiko

A Study of a Force Field Control
Algorithm by Acoustic Holography
for Ultrasound TherapyWith economic globalization and the shift to a knowledge
economy, there is a demand for the development ofknowledge economy centers.
While large cities are attracting attention as leading cities,
autonomous development of local economies in small andmedium-sized cities is also an issue.
Using Japan as a case study, we conducted a quantitative
analysis of the impact on technological diversification
among multilayered centers using patent data, suggestingthat knowledge spillovers and technology transfers fromwide-area knowledge economy centers may support
technological diversification in local centers.
We focus on phased array transducers (PATs) to render
force fields and realize the improvement in medical
equipment to enhance this therapy. This can both render
an arbitrary acoustic field and quickly change it bycontrolling the output and phase of each transducer. We
propose a novel algorithm to control PATs at many andclose control points in this research. We compare theproposed algorithm with previous ones and assess the
avoidance of negative effects outside the target area. The
findings show that the proposed algorithm achieves both
excellent reconstruction performance and low
computational cost, and it can render an acoustic fieldsufficient to prevent negative effects on the body.

Shima Tomoki

Kobayashi
Takeshi

Development of a virtual safe andpurification-enhancing technology
for high-concentration organic
chlorinated compounds infiltrated
in clay through heating

Shimizu Sae

Oya Masaru

Analysis of enzyme effectivenessagainst denatured protein stains by
probability density functional
methodSoil and groundwater pollution caused by volatile organic
chlorinated compounds (CVOCs) is potential in tens of
thousands of locations in Japan. When highconcentrations of CVOCs infiltrate deep into clay layer,
purification becomes extremely difficult. Even if theaquifer adjacent to the contaminated clay layer is purified
below the environmental standard, sites with reboundpollution are revealed, making it difficult to determine
when the purification is completed.
This study examined a purification-enhancing method
using high-temperature heating. In addition, we proposed
a concept of practically safe purification completion
judgment that does not spread contamination to thesurrounding environment even if rebound occurs.
Proteins are denatured when exposed to hightemperatures, acidic or alkaline conditions, or when othersubstances are added. Denaturation refers to the breakage
of non-covalent bonds necessary to maintain the regular
three-dimensional structure of proteins, resulting in achange to an irregular structure. Proteolytic enzymes are
effective against denatured protein stains that are difficult
to clean with surfactants. However, the extent to which
proteolytic enzymes contribute to stain removal has notbeen clarified. In this study, we analyzed the effectivenessof enzymes on denatured protein stains using theprobability density function method, and attempted toquantify the detergency of enzymes.

Shimosako
Shinpei

Shibutani
Tadahiro

Investigation of weight reduction
and optimization of safety factor for
Type-3 cylinders using highmodulus carbon fiber

Sunohara
TakumiShiraishi
Toshihiko

A Study of Source Separation of
Noise in Mixture and Its Control by
Neural Networks

Type-3 containers have a structure in which the metal
container is reinforced by wrapping carbon fibers aroundthe circumference and axial direction. The characteristicsof the product are light and strong, but further weight
reduction and an excessive safety factor are issues to be
discussed. In this study, I will select new materials
focusing on the modulus of elasticity of carbon fiber.
Then, a test production of the cylinder and stress analysis
using the finite element method were conducted. In theexamination of the results, we will select the mostappropriate material for the cylinder design, and will
study the possibility of achieving the weight reduction andoptimization of the safety factor of the cylinder.
Active noise control forms a quiet area by superposing thewave of anti-phase and same amplitude as noise.
However, its system alone reduces not only noise but also
target sound. To solve this issue, we proposed a noise
control system combined with a sound source separation
system. By using neural networks, the proposed system
may control following the movement of the evaluation
point. For that reason, we verified its performancethrough the experiment. The results show that noise isreduced by 5 to 6 dB also at moving evaluation point.

Takata Shungo

Fujii Makiko

Evaluation of migration ofphthalates with DIP-IA/MS

Taguchi Jun

Hondo Hiroki Analysis of Life Cycle CO2Emissions for Next-generation
Greenhouse Horticulture and Its
Reduction Potential

It is known that Phthalates have the nature of migration
caused by contact. In this study, the PVC films, to which
Phthalates migrated under the different condition oftemperature and time, were measured with DIP-IA/MS,and the difference of migration property was evaluated.
As a result, it was found that the peak shape of mass
chromatogram changed depending on the shape ofsamples. Besides, it was revealed that the migration
property was strongly affected by the chemical structureof phthalates. The method proposed in this study enabled
the qualitative and quantitative evaluation of phthalates
migrated into PVC film.
Currently, next-generation horticulture, which is stable
and highly productive and utilizes renewable energy
sources, is attracting attention, but its life cycle CO2
emissions have not been fully evaluated. Therefore, thepurpose of this study was to reveal the LC-CO2 emissionsof next-generation horticulture and its reduction
potential. Using a tomato production system as an
example, LC-CO2 emissions were estimated by using theprocess analysis and the I/O analysis, and its reduction
potential of the use of wood chips for heating was also
analyzed.

Tanaka Yuuki

AramakiKenjiHydrogels Formed By
Nanoemulsion Mediated Gelation
MethodTaniguchi
YoshimiNakano Ken

Experimental extraction ofviscoelastic components in rubber
friction

Nanoemulsion mediated gelation method in which a low
molecular weight organogelator is dissolved in ananoemulsion instead of micelle to form a hydrogel can beused with a wide variety of materials, regardless ofmolecular size. Therefore, the aim of this research is to
optimize the conditions for gel formation in thenanoemulsion mediated gelation method and to elucidate
the microstructure of the gel. In this study, optimal
homogenization time, rotation speed, and cooling speed
were established based on the results of visualobservation, optical microscopic observation, and particle
size distribution measurement. It was also suggested thatthe less soluble the gelling agent is in the oil, the more
uniform the gel may form.
Rubber is often used in products closely related tofriction, such as tires, oil seals and shoe soles. In rubber
products, it is extremely important to control hysteresis
friction. In order to understand and control hysteresis
friction based on dynamics, I conducted friction tests
under lubrication, and developed a method to extract
hysteresis friction from rubber friction by using thefoundation theory and the lubrication theory. In addition,
I verified the validity of the extracting method bycomparing it with the foundation theory.

Nakajima Kota

Nakano Ken

Nakajima Kohei Ito Akihiko

Mechanism of increase in friction
force for brake materials undersemi-dry conditions

Preparation of Lu2O3–MgO
composite films using chemical
vapor deposition

Understanding the mechanism of increase in friction
force under semi-dry condition is important for the quiet
operation of automobiles. Therefore, we do in-situ
observation of the friction surface by the frustrated totalinternal reflection and force measurement simultaneously.
The results showed that under semi-dry conditions,clustered particles are moved into the contact surface andgathered at the center of the contact surface with increasein frictional force. I predict about mechanism of increasein friction force under semi-dry conditions, clusters ofparticles enter the contact surface and generate drag force
between the two contact surfaces.
Compounds in Lu2O3–MgO systems possess excellent
optical and mechanical properties. Although Lu2O3–MgO
composite material would have ordered microstructure,
which is associated with eutectic nature of the system,
there are few studies on the preparation of Lu2O3–MgO
composites. In the present study, Lu2O3–MgO films wereprepared using laser-assisted chemical vapor deposition,and the effects of deposition conditions on crystalline
phase and microstructure were investigated.

Nakata Keisuke

MiyakeAtumi

Nakamura Miku Kumasaki
Mieko

Prediction of dynamic behavior
during abnormal reactions bychemical process modeling using
complex physical domain modelingElectrochemical oxidation oftriazoles with ammonium nitrate aselectrolyte

Chemical reaction processes are designed to cause
reactions that produce desired results. However,temperature changes and other factors can cause
abnormal reactions such as runaway reactions andunexpected events that may lead to accidents. Therefore,
it is important to model chemical reaction processes withvarious physical domains and predict accident scenarios.
In this study, we incorporate chemical reaction
information obtained from reaction kinetic analysis andquantum chemical calculations into the complex physicaldomain model we have constructed, and contribute to theprediction of dynamic behavior when abnormal reactions
occur.
As a result of electrolytic oxidation of 3-amino-1,2,4treiaozle using ammonium nitrate as electrolyte, and theresulting crystals were identified, we succeeded insynthesizing 3-amino-1,2,4-treiaozle nitrate andelucidating its crystal structure. Therefore, it wassuggested that electrolytic oxidation using ammonium
nitrate as a support electrolyte is effective for thesynthesis of energy substances with lower environmental
impact and their structural elucidation.

Nakamurayuuki

Endo Akira

Cost-effectiveness of urban heatisland countermeasures Study on
the relationship between regional
characteristics and the introductionof countermeasures

NISHIGUCHIHARUKINAKANO
KEN

Analysis of abnormal noise of
mechanical seals based on dynamic
stiction theory

Recently, rising temperatures, especially in urban areas(heat island phenomenon), have become more
pronounced. In this paper, a cost-benefit analysis isconducted based on the energy reduction effect of heatisland countermeasures and the cost of introducing thecountermeasures, and regional characteristics of heatisland countermeasures are examined based on
differences in cost-benefit analysis between sites withdifferent weather conditions and geographicalcharacteristics (Osaka Prefecture and Los Angeles). As aresult, it was found that although the cost-benefit analysis
for the city as a whole was greater in Osaka Prefecture,
the effects of heat island countermeasures were more
readily apparent in Los Angeles.
In order to elucidate the mechanism of the abnormal
noise generated when rotating the mechanical seal, we
created a physical model of the mechanical seal,
conducted numerical analysis, and grasped thecharacteristics of vibration. Offset is taken into
consideration for the model. Dynamic stiction theory isused for the model. The theory is a theory that there isalways a slight angular deviation between the rigid main
shaft and the driving direction. I found that a large
vibration occurred in the direction opposite to the offset
direction and that the waveform of frictional vibration had
speed characteristics. I obtained the parameter conditions
that can suppress the vibration.

Nishida Masaki

AmemiyaTakashi

The role of mitochondria inglycolytic oscillations

Hirayama kanji

Endo Akira

Cost-benefit analysis of urban heatisland countermeasures for Osaka
Prefecture

Conventionally, it has been thought that the reaction of
glycolytic oscillations in cancer cells occurs only in theglycolytic system without mitochondria because of
Warburg effect. However, in recent research, cancer cells
drive mitochondrial metabolism to obtain energy andmetabolite, and we do an experiment how the metabolism
in mitochondria affects glycolytic oscillations. It wassuggested that the NADH shuttle on the mitochondrial
inner membrane contributes to glycolytic oscillations.
The Ministry of the Environment and local governments
are increasingly promoting heat island countermeasures,and there is a need to evaluate the effects of heat island
countermeasures. We evaluated the reduction in energy
consumption and human health hazards due to the effectof temperature reduction, as well as the reduction inenergy consumption due to changes in the indoor
environment, using rooftop hyper-reflection, rooftop
greening, and rooftop sprinkling as evaluation targets. As
a result, rooftop watering provided the most benefits, withan annual benefit of 31.3 billion yen. Energy consumption
was reduced by 10.6 PJ through indirect effects and 1.5 PJ
through direct effects. Human health damage was reducedby 2,440 DALYs, resulting in a cost-effectiveness ratio of
11.1%.

Fukazawa Shiori Endo Akira

Study of intention to switch to
Stadtwerke business model andpower supply and demand
regarding feasibility

FUKIHARU
AKIRA

Analysis of removal behavior of oily
stains by detergency evaluation
system with HPLCOYAMASARU

We examined the acceptance and feasibility of
introducing the German Stadtwerke, a locally produced,
locally consumed electric power company, to Japan, as
well as the acceptance of local residents. First, anationwide survey was conducted to ask the factors andreasons for switching to a new electric power company.
Then, in Maniwa City, Okayama Prefecture, we
conducted a survey of residents related to the local powercompany and environmental issues, as well as an analysis
of electricity supply and demand for households, toexamine the feasibility of the project. The results showeda correlation between satisfaction with the local
community, environmental awareness, and acceptance,
indicating that narrowing the scope of the project would
make it highly feasible.
In this study, I constructed a new detergency evaluation
system that can observe the removal behavior of oily
stains caused using a surfactant by setting thecontaminated cloth on which the stains are attached on
the flow path of HPLC. With this system, it is possible toevaluate the removal process of stains by dividing it intomechanical factors and chemical factors. In addition, thewaveform of the removal behavior can be obtained
continuously during the washing process, and it is thoughtthat this system can be used for the kinetic analysis ofwashing.

MAEDA Yutaro HONDOHIROKI

Evaluation of Narrative Workshop
for Creating Decarbonized
Regional Areas: Using Qualitative
Analysis Focusing on the Content
of Statements

Murokasa Yuka

Boosting effect of water based
thickeners on gel fiber growth by
surfactant mediated gelation
methodArataki Kenji

There is a need for citizen-led discussion for the creationof future decarbonized regions, but there are no examplesof the development and evaluation of these workshops
using the effects of narratives. The purpose of this study
is to examine the effectiveness of the narrative workshop
attended by university students, focusing on the content
of participants' statements. The analysis will use coding tointerpret the content of the statements and organize thecodes to show the effective factors and interactions that
led to the completion of the narrative-type scenarios of
the community targeted by the workshop.
Surfactant mediated gelation method is a technipue thatutilizes the surfactants to solubilize organogelator to formhydrogels. It is thought that increasing the viscosity
prevents rapid fiver growth and results in homogeneous
formation. Therefore, the purpose of this study is toinvestigate the boosting effect of thickeners on fiber
growth. It was found that the effect of thickener is thatthe fibers grow slowly and homogeneously, and that thelength, amount, and volume fraction are increased.
Furthermore, the sol-gel transition temperature increased
and minimum gelation concentration decreased.

Yagi Kento

Hondo Hiroki Life-Cycle economic impacts of an
offshore wind farm in Japan

Offshore wind energy has great potential in Japan and it is
one of the renewable energy technologies that are
expected to be introduced in order to achieve carbon
neutrality by 2050. At the same time, this technology is
expected to have significant economic benefits among
many different industries through installation andoperation. Therefore, quantitative information on theeconomic impact by industry is required to promote theintroduction of this technology in the future.
This study aims to assess the economic ripple effects overthe life cycle of a typical wind farm that is expected to be
introduced in Japan in the future.
In this study, an Input-Output analysis is conducted using
the 2015 I-O table. In addition, we created our own final
demand vectors for construction and operation phase
based on several literature sources and interview
information. This allows for an analysis that reflects thetechnology-specific cost structure of implementing
offshore wind farm in Japan.
The analysis resulted in a life-cycle economic ripple effectof approximately 1,020 billion yen. In particular, thedirect investment amounted to approximately 660 billion
yen, and approximately 360 billion yen was shown to be
induced indirectly. It should be noted that the
manufacturing and construction stages, approximately
227 billion yen was induced in the upstream of the project
for an investment of approximately 176 billion yen. This
result suggests the characteristics of the technology,
which covers a wide range of related industries.

Yamai Taisei

Ito AkihikoPreparation of Mg2Hf5O12 films
using chemical vapor deposition
and their luminescence properties

Yamaguchi
Takumi

AramakiKenjiHydrogel formation using complex
of cationic polymers and lowmolecular-weight organogelators

Mg2Hf5O12 has high relative density and large effective
atomic number, and thus has potential for scintillator
applications. However, since Mg2Hf5O12 is a incongruent
melting compound and difficult to synthesize, there are
no reports on single crystal growth or phosphor
applications. In the present study, rare-earth-ion doped
Mg2Hf5O12 films were epitaxially grown on c-cut sapphire
substrate using laser-assisted chemical vapor deposition
and their luminescence properties were studied.
Gels are used in various fields, including pharmaceuticals
and cosmetics. The low-molecular-weight organogelator
12-hydroxyoctadecanoic acid (12-HOA) is insoluble inwater. However, if its solubility in water is increased,hydrogels can be formed. In this study, we propose apolymer-mediated gelation (PMG) method using thecationic polymer polyethyleneimine (PEI), which forms
ionic complex with 12-HOA. The complex can besolubilized in water. The structure of the gel fibers isfound to be hollow nanotubes. And, it is suggested that acomplex network of 12-HOA fibers and PEI cross-linked
is formed.

Yamashita Mao

Kumasaki
Mieko

YAMADA
TAIGA

Otani
Hiroyuki

Research on the accuracy
improvement for the time constantcorrection with numericalevaluation process for reaction
calorimetry

Reaction calorimeters have heat transfer delays caused byheat conduction within the apparatus and sample.
Existing time constant correction methods, which
improve the heat transfer delays, have the problem of not
being able to determine the time constant during achemical reaction. A previous study has proposed themethod with a numerical evaluation process and thismethod was shown to be valid when simulated under ideal
heat transfer conditions. The purpose of this study is to
examine the conditions for applying this theory to real
chemical reactions.
Synthesis, Structure, and Properties 2-Aminotropone, a representative 7-membered ring nonof Double-Decker Cyclicbenzenoid aromatic compounds, is a molecular stabilized
Bitroponoid Divalent Transitionby the resonance contribution of its polarized structure. I
Metal Ion Complexes
investigated synthesis, structure and properties of doubledecker-type dinuclear complexes 1 and 2 prepared from
10-dodecyl-1,8-bis[(2-N-dodecylaminotropon-5yl)ethynyl]anthracene and divalent transition metal ions.
1 was oxidized with 1.0 or 2.0 equivalents of AgSbF6, andradical cation and dication 1 showed absorption bands in
the NIR region. The optical and electronic properties ofthe dinuclear complexes 1 and 2 will be discussed bycomparison with those of the mononuclear complexes 3
and 4.

Ren Zonghan

Ito AkihikoPreparation of HfO2–Lu2O3 andZrO2–Lu2O3 films using chemical
vapor deposition

WATANABE
KOTA

MiyakeAtsumi

Detailed pyrolysis mechanism ofammonium nitrate/chloride
mixtures

The compounds of HfO2-Lu2O3 system are promisingmaterials for scintillators. Although these compounds
have fluorite-related structures, there are only a few
reports on fabricating these compounds and the effct of
the Lu composition ratio on their crystal phases are notwell investigated to date. In the present study, we
prepared Eu3+-doped HfO2-Lu2O3 films via chemicalvaopor deposition and studied the effects of Lu
composition ratio on their phase transitions andphotoluminescence spectra.
It is well-known that the exothermic decomposition
reaction of ammonium nitrate is promoted by chloride,but the detailed decomposition mechanism has not yet
been fully understood. In this study, we aimed toelucidate the decomposition mechanism of ammonium
nitrate/chloride mixtures using a detailed kinetic model.
Quantum chemical calculations were used to identify thereaction pathways. In the construction of a detailed
kinetic model in the condensed phase, we focused on themethod of assigning kinetic parameters in concentrated
systems such as molten salts, which had been a challenge
in previous methods, and worked on parameter
calculations using molecular dynamics simulations. As aresult, we constructed a model that reproduces themacroscopic properties obtained by experiments well.
Using this model, we identified that the reaction pathwayof generating N2H4 via NH2Cl, which is specific tochloride mixtures, plays an important role in thedecomposition mechanism of the detailed reaction
model/chloride mixture system.

Watanabe Taiga Ito AkihikoPreparation of rare-earth doped
Y2O3-based films using chemical
vapor deposition and theirluminescence properties

Y2O3, YAG, and Al2O3 are promising material for opticalapplications. YAG is also known to form composite oxides
with Al2O3. In the present study, we focused on thechemical vapor deposition method to synthesize Y2O3
films and YAG-Al2O3 composite films and studied theirphoto- and radio-luminescence properties.

Watanabe Taiga Nakano Ken

Stabilization of sliding systems withrotational freedom

In order to obtain a design guideline for stabilizing arotating 1-DOF sliding friction system, I made a physicalmodel of the system, conduct numerical analysis empiricalexperiments on the results. Yaw angle misalignment
theory was taken into the physical model. It was foundthat in the case of one point of contact, a damping effectcan be obtained due to setting a smaller sum of
misalignments caused by the driving direction and theposition of the contact point. In a 2-DOF system addedtranslational motion to the 1-DOF system, it is important
to consider the combination of misalignments caused by it
and the position of the contact point.

Watanabe yuta

Wachi Fumika

otani hiroyuki Synthesis, Structure, and Properties π-Extended macrocyclic thiophenes have large innerof Novel Phenyl-Substituted Cyclic cavity and exhibit a unique solid structure. Synthesis of
π-Extended Thiophene Hexamer
novel phenyl-substituted cyclic tetramers (4T2A-Ph and
4T-Ph) and hexamer (6T3A-Ph) by McMurry coupling
reaction was investigated. Tetramers are unstable and it
has been difficult to investigate these properties.
However, hexamers exhibited morphological changes withcolor and shape changes depending on the solvent inwhich they were concentrated. In addition, it was foundthat crystals strongly incorporated hydrocarbons such aspentane, reflecting the crystal structure with many pores.
6T3A-Ph and 6T4A-Ph have different vinylene numbers,
with 6T3A-Ph exhibiting a bowl-shaped structure, and
6T4A-Ph exhibiting a pseudo planar structure.
MatsumotoPreparation of crystalline thin films In a previous study, three polymorphs with different color
Shinyaof chlorinated diketo-pyrroloand physical properties were observed in the crystalline
pyrrole derivative with a propyl
state of a chlorinated diketopyrrolopyrrole derivative withgroup at the N-positiona propyl group at the N-position. In this study, the title
dye was thin-filmed using the vacuum evaporation
method, and the basic properties in the thin-film state
were investigated, and the changes in the properties andcrystal structure by external stimulation of the thin-film
were examined. As a result, changes in color tone andcrystal structure were observed when the thin films were
exposed to various solvent vapors and when the thin films
were heated.

Riaz Ayesha

Nakai Satoshi

Temporal variation of ambient air
pollutants and meteorologicalinfluences on their concentrationsin Lahore during 2018-2021

YIN
MENGYUENAKAISATOSHI

Evaluation of health effects of longterm OX exposure in Yokohama
City based on SOMO35

This work aims to analyze the temporal and seasonalvariation of selected air pollutants in Lahore for four
years, 2018–2021. It is needed because there are very few
studies in this direction, especially at the city level. The
current study can provide deeper insight andunderstanding of pollution trends and how they changewith seasons/environmental conditions as it is related to a
specific part of the city and also considers the effect ofprecipitation. It will also validate dependence of seasonalvariation of pollutants on meteorological conditions,presented in previous studies during different durations
along with the precipitation effect.
OX is a kind of air pollutant. Long-term exposure to OX
can impair lung function. Currently, Japan's OX
environmental standard is set at 0.06ppm or less per hour,
and the level of achievement is still extremely low. Basedon SOMO35, this study aimed to provide basic
information for formulating future pollution prevention
measures. I estimated the number of annual deaths that
could be reduced if achieved the aim concentration(attributable cases) and its attributable proportion.

WU TONG

Oya Masaru

Development of the Efficient
Washing Evaluation System Using
UV-Vis Image Analysis

Wan Shengji

Kobayashi
TakeshiA Study of Application Methods
and Countermeasures for
Sustainable Remediation in Lead
Surface Soil Contaminated Land

Cleaning is necessary for a wide range of fields, including
daily life. Detergency evaluation is essential toquantitatively know how much adhered soil is removed
from the object to be cleaned.This study aims to realize
more efficient detergency evaluation using image analysis
and to expand the applicable object of detergency
evaluation by image analysis. Therefore, we considered
the combination of image analysis with the mini-scalecleaning test method developed in the previous study. At
the same time, we examined the optimal experimental
conditions and analysis methods for quantitative
detergency evaluation by UV image analysis.
Using the results of a detailed soil survey at a site
contaminated by lead in surface soil, this study not only
evaluated the soil contamination by comparing it with thestandard values, but also evaluated the risk by assuming
various exposure pathways, and established 14
environmental, 4 economic, and 3 social parameters thatcan be used to quantify the adverse environmental,
economic, and social effects of each countermeasuremethod. The calculation method was determined.
Furthermore, this study developed an example ofsustainable remediation (SR) evaluation for each
remediation method, and proposed a SR method forsurface soil contamination based on an application casestudy.