〓 Research Area : Architecture and Urban Spatial Planning

Discretionary architectural design review in North
American cities
I am analyzing the actual situation of sustainable infill type ofbuilding renewal in North America, the way of public participationin the development review process, and the actual living environment created by it. In particular, focusing on the case of renewalof individual buildings in the city center, from the viewpoint of thebalance of pre-determined standards (zoning, etc.) and discretionary development review, how can the living environment andlandscape that meet the needs and characters of the community
be achieved? Regarding that, we are examining effective frameworks and methods based on changes in the minutes and drawings of actual neighborhood meetings and design review public
hearings. Case study cities are Seattle, Toronto, Miami, etc.

Transfer of Development Rights system and its implementation for preservation of historical buildings
Many historic buildings have been demolished in the centerof Japan, and development is being conducted that does notmatch the characteristics of the area. In Japan, there are issues
such as the looseness of zoning and the existence of many development bonus systems, and there is a need for an effective
Transfer of Development Rights system. This study clarified theactual operation of Transfer of Development Rights system in
Vancouver from the viewpoint of historic building preservation.
As a result, strict zoning, discretionary development review
system, and rezoning system that enables development bonus
were cited as conditions for effectively operating the Transfer ofDevelopment Rights system.

〓 Assoc. Prof.
HORI Hirofumi〓 Research Area : Ceramic Materials

Effect of acid treatment conditions on the dissolution behavior ofconstituent elements in molten slags and ashes of municipal waste
In municipal waste molten slags, valuable elements such as Si,
P and Ti are present. Our research group has developed a newrecycling method in which P and Ti-containing SiO2-rich solid
phase is recovered after acid treatment of B2O3-added molten
slag glasses. We also found that the SiO2 phase is formedby dissolution reprecipitation process. It is hence expectedthat by changing treatment conditions, selective recovery of aspecified element will be realized. Then, in this project, we areinvestigating elution behavior of constituent elements in molten
slags and ashes of municipal waste by changing basicity ofslag glass, where an alkali oxide was added to the molten slag
to prepare slag glasses having different basicities.

Recovered solid after acid treatment[DOI: 10.1016/j.jascer.2013.03.003]

Development of novel glasses for immobilization of radioactive iodine〓 Prof.
NANBA Tokuro〓 Assoc. Prof.
BENINO Yasuhiko

TRU (TRans-Uranic) waste contains radionuclides such as Iodine-129. Iodine-129 has extremely long half-life of 15.7 million
years, and hence it is a key nuclide at the safety assessment
for the geological disposal of TRU waste. However, it has highvolatility so that the conventional vitrification technique is notapplicable. Then, new iodine-129 immobilization technique
is required. A lead borate glass with low melting temperature
is a candidate for the vitrification technique. In our researchgroup, structure (atomic arrangement) of the iodine-containing
lead borate glasses has been studied by using combination ofStructure model of lead borate glass
experiments and computer simulations to clarify the relation beand Iodine-containing vitrified waste[DOI: 10.1016/j.pnucene.2016.05.008] tween glass structure and iodine immobilization property.

Graduate School of Environmental and Life Science, Okayama University35