Ryuji Matsuhashi

TL;DR: In this paper, a model considering indices of economic activity is established to forecast the amount of demolished concrete in the future, and an input-output table is extended by a detailed description of concrete-related industries such as construction, aggregate, cement, and ready-mixed concrete, and several concrete recycling processes have been added.

TL;DR: In this paper, the tradeoff between CO 2 emissions and total cost of technologies is analyzed so that the most cost-effective technology can be determined for different CO2 emissions constraints. And the position of supercritical water gasification in various technologies of energy conversion is examined by modeling an overall energy system.

TL;DR: In this article, the authors investigated the costs and effectiveness of two CO2 emission control policies: a CO2 tax and a subsidy for CO2 reduction, and concluded that the national cost of CO 2 reduction by taxation is prohibitively high.

TL;DR: In this paper, a mathematical tool called the Process-relational model was developed for estimating life cycle CO2 emissions from electric vehicles (EV) and gasoline vehicles (GV), although the estimation in this study is not an LCA according to ISO14040s.

TL;DR: The optimal results and their sensitivity analysis showed that the sustainable hybrid energy system operating in grid-connected mode, which possesses such attractive features as producing onsite pure oxygen for oxygenation and utilizing the by-product hydrogen for generating backup power, could bring significant benefits for farmers.