In this study, we used coal-based activated carbons and charcoal as startingmaterials, phenolic resin (PR) as a binder, and TOS as a titanium source to prepare TiO2 combining spherical shaped activated carbon photocatalysts. The textural properties of the activated carbon photocatalysts (SACP) were characterized by specific surface area (BET), energy dispersive X-ray spectroscopy (XRD), scanning electron microscopy (SEM), iodine adsorption, strength intensity, and pressure drop. The photocatalytic activities of the SACPs were characterized by degradation of the organic dyes Methylene Blue (MB), Methylene Orange (MO), and Rhodamine B (Rh. B) and a chemical oxygen demand (COD) experiment. The surface properties are shown by SEM. The XRD patterns of the composites showed that the SACP composite contained a typical single, clear anatase phase. The EDX spectro for the elemental indentification showed the presence of C and O with Ti peaks. According to the results, the spherical activated carbon photocatalysts sample of AOP prepared with activated carbon formed the best spherical shape, a high BET surface area, iodine adsorption capability and strength value, and the lowest pressure drop, and the photocatalytic activity was better than samples prepared with charcoal. We compared the degradation effects among three kinds of dyes. MB solution degraded with the SACP is better than any other dye solutions.

In this study, the effects of silver treatment and activation on the physical and chemical properties of spherical activated carbon (SAC) were studied. The textural properties of SAC were characterized by BET surface area, XRD, SEM, iodine adsorption, strength intensity, pressure drop and antibacterial effects. BET surface areas of SACs decreased with an increase of the amount of PR before and after activation, and the BET surface areas of SACs were found to be about 2-3 times the size of those before activation. The XRD patterns showed their existing state as stable Ag crystals and carbon structure. The Ag particles are seaweedlike and uniform, being approximately 5-10 μm in size deposited on the surface of activated carbon. All of the samples had much more iodine adsorption capability after activation than before activation. The strength values of SACs increased with an increase of the amount of PR, and there was a smaller drop in the strength values of SACs with silver treatment than with non-silver treatment after activation. The Ag-SAC composites showed strong antibacterial activity against Escherichia coli (E. Coli).

최근 들어 인간과 컴퓨터 상호작용 분야에서 기존의 인지적인 측면 이외에 감정의 역할에 대한 관심이 증폭되고 있는 추세이다. 본 연구에서는 사용자가 좁은 화면을 통해 의사 결정을 위한 정보검색을 수행 할 때 감정 상태에 따라 정보 검색 패턴이 달라지는지를 알아보고자 하였다. 본 실험에서 실험참가자들의 감정 상태를 긍정적 혹은 부정적 상태로 유도하기 위해 긍정적인 감정과 부정적인 감정을 유발시킬 수 있는 음악을 듣게 하였고 동시에 자신의 과거 기억으로부터 긍정적인 감정 혹은 부정적인 감정을 유발시킬 수 있는 자서전적 회상 과제를 수행하도록 하였다. 감정 유발 과정이 끝난 뒤 각 실험 참가자들은 작은 디스플레이를 통해 세 나라들에 대한 여행 정보를 검색하여 가장 선호하는 여행지를 선택하였고, 실험참가자들이 탐색한 링크들의 경로 및 각 링크에 머무른 시간 등이 실시간으로 기록되었다 실험결과 긍정적인 감정 상태에서는 중립 상태와 부정적인 감정 상태에 비해 보다 신속한 정보탐색이 이루어지는 것으로 나타났고, 중립 상태와 부정 감정 상태에서는 긍정 감정 상태에 비해 세부 항목에 상대적으로 많은 양의 인지적 자원을 할당하는 것으로 나타났다.