The structural stability of the recycled concrete disposal container was evaluated and compared the applicability of the current design standards for recycled concrete of nuclear power plant. The structural stability requirement for concrete disposal containers is 37.7 MPa or more. As a result of the compressive strength test on recycled concrete, 50% of coarse aggregates of recycled concrete was 42.1 MPa. In addition, it was found that the bending strength and shear strength of recycled reinforced concrete beam exceeded the current design standard. Therefore, it is judged that recycled concrete containing coarse aggregates can be sufficiently utilized. It was possible to ensure the structural stability of the concrete container without changing the design specifications and reinforcing bars when recycled concrete is applied.

Graphene, a new material with various advantageous properties, has been actively used in various fields in recent years. Applications of graphene oxide are increasing in combination with other materials due to the different properties of graphene oxide, depending on the number of single and multiple layers of graphene. In this study, single-layer graphene oxide and multi-layer graphene oxide are spray coated on polystyrene, and the physicochemical properties of the coated surfaces are characterized using SEM, Raman spectroscopy, AFM, UV-Vis spectrophotometry, and contact angle measurements. In singlelayer graphene oxide, particles of 20 μm are observed, whereas a 2D peak is less often observed, and the difference in surface height increases according to the amount of graphene oxide. Adhesion increases with an increase in graphene oxide up to 0.375 mg, but decreases at 0.75 mg. In multi-layer graphene oxide, particles of 5 μm are observed, as well as a 2D peak. According to the amount of graphene oxide, the height difference of the surface increases and the adhesive strength decreases. Both materials are hydrophilic, but single-layer graphene oxide has a hydrophilicity higher than that of multi-layer graphene oxide. We believe that multi-layer graphene oxide and single-layer graphene oxide can be implemented based on the characteristics that make them suitable for application.

The concern on the greenhouse gas emissions is increasing globally. Especially, the greenhouse gas emission from fisheries is an important issue from the Paris Climate Change Accord in 2015. Furthermore, the Korean government has a plan to reduce the GHG emissions as 4.8% compared to the BAU in fisheries until 2020. However, the investigation on the GHG emissions from Korean fisheries rarely carried out consistently. Therefore, the quantitative analysis of GHG emissions from Korean fishery industry is necessary as a first step to find a relevant way to reduce GHG emissions from fisheries. The purpose of this research is to investigate which degree of GHG emitted from the major offshore fisheries such as offshore gillnet fishery, offshore longline fishery, offshore jigging fishery and anchovy drag net fishery. Here, we calculated the GHG emissions from the fisheries using the Life Cycle Assessment method. The system boundary and input parameters for each process level are defined for the LCA analysis. The fuel use coefficients of the fisheries are also calculated according to the fuel type. The GHG emissions from sea activities by the fisheries will be dealt with. Furthermore, the GHG emissions for the unit weight of fishes are calculated with consideration to the different consuming areas as well. The results will be helpful to understand the circumstances of GHG emissions from Korean fisheries

본 연구는 경기도 31개 시군의 과학기술역량을 정확하게 파악하기 위하여 실증분석을 실시하고 그 결과를 지도화하여 시사점을 도출한 뒤 지역별로 역량에 맞는 정책방안을 제시하는 것이 목적이다. 비교적 객관적인 분석의 결과를 얻기 위하여 COSTII, R-COSTII와 그 논리적 맥락을 같이하여 혁신자원의 투입에서 성과에 이르는 전 과정을 혁신자원, 혁신활동, 혁신과정, 혁신환경, 혁신성과 등의 5개 부문으로 구조화한 G-COSTII 지표를 개발하여 이용하였다. 경기도 내 31개 시군에 대한 기초지자체 과학기술혁신역량분석의 종합결과를 지도화하면 지역별 또는 권역별로 과학기술역량의 차이가 상이한 것으로 나타나고 있다. 경기 남·북부 간에 과학기술역량의 차이를 보이는데 구체적으로 역량이 높은 기초지차체는 주로 경기도 남부, 경부권과 서해안권에 자리하고 있음을 알 수 있었다. 경부권은 혁신자원 및 혁신환경이 우수하며 서해안권이 활발한 혁신활동과 혁신과정을 하고 있음을 알 수 있었다. 본 연구에서는 이러한 차이를 바탕으로 세부지역별 혹은 권역별 맞춤정책의 필요성을 확인할 수 있었다.