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Toshiharu Kishi 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.S1
A fundamental study on whether improvements in self-healing performance can be achieved by mixing into concrete granules of self-healing agent whose main component is geo-materials instead of self-healing agent in powder form, for the purpose of preventing leakage of water through cracks was investigated. The aim of this research is rapid slump loss compensation based on the granulation process of self-healing agent whose main component is geo-materials that have high reactivity with water and includes a long-term retention of the self-healing capability of concrete incorporating self-healing agent. Comparison of concretes commercially prepared by blending in self-healing agent at ready mixed concrete plants established, through laboratory and field tests, that the 40 kg/m3 granule admixtures based on self-healing agent as a fine aggregate replacement improved he slump of ready mixed concrete and showed a high water leakage prevention effect through self-healing of cracks even after the lapse of 8 months.
Effect of self-healing agents on inorganic crack repair materials for concrete infrastructures
안태호,Toshiharu Kishi 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.1
In this study, innovative repair methods based on crack self-healing technologies using cementitious materials were suggested in order to prevent water leakage in concrete infrastructures such as slab, tunnel and water-retaining structure. Especially, this study aims to develop new inorganic repair materials as needed to follow the crack and its repair methods. Crack repair methods such as Coating Method (CM), Drilling & Filling Method (DFM) and Coating and DF Method (CDFM) for the practical industrial application were examined in comparison with normal crack repair method without self-healing capability. From these results, it was confirmed that the sealing effects of water leakage through the penetrating cracks from field tests could be improved by cementitious composite materials with self-healing capability
Successful introduction of modified dorsolumbar epidural anesthesia in a bovine referral cent
Inhyung Lee,Miho Hiraoka,Toshiharu Miyagawa,Hayato Kobayashi,Toshihiko Takahashi,Hiroaki Kishi,Hiroshi Kobayashi 대한수의학회 2007 Journal of Veterinary Science Vol.8 No.2
This study describes the successful use of modified dorsolumbar epidural anesthesia with a fixed volume of anesthetic in a bovine referral center. Among the 130 Holstein cattle scheduled for flank surgery, 90 cattle received a mixed anesthetic consisting of 1 ml of xylazine hydrochloride and 3 ml of lidocaine hydrochloride by modified dorsolumbar epidural anesthesia. Eighteen cattle with dehydration and/or lameness received a mixed anesthetic containing 0.5 ml of xylazine and 3 ml of lidocaine. Infiltration anesthesia was performed in 22 cattle whose epidural space could not be reached in order to perform the flank surgery. The surgeries began about 12 min after the administration of the anesthetic and lasted for about 36 min. The modified method using a fixed volume of anesthetic was successfully introduced and effectively used in a bovine referral center. This modified method will allow veterinarians to save time and effort, thus lowering the cost of each surgery.