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골형태분석법과 micro-CT를 이용한 골소주 특성에 대한 연구
송영한,이완,이창진,지정현,이병도,Song, Young-Han,Lee, Wan,Lee, Chang-Jin,Ji, Jung-Hyun,Lee, Byung-Do 대한영상치의학회 2007 Imaging Science in Dentistry Vol.37 No.1
Purpose : The research was done to investigate the effectiveness of 2D bony morphometry and microstructure of micro-computed tomography (micro-CT) on the osteoporotic bony change. We performed the bone morphometric analysis of proximal femur in ovariectomized rabbits with BMD and micro-CT examination. Materials and Methods : Twenty-one female (Newzealand, about 16 weeks old, 2.9-3.4kg) rabbits were used. Three rabbits were sacrificed on the day when experiment began (Baseline). The remaining 18 rabbits were divided into two groups. One group was ovariectomized bilaterally (OVX) and the other animals were subjected to sham operation (Sham). Bone specimens were obtained from the right and left femur of sacrificed rabbits. At intervals of 1, 2, 3, 5, 6 months respectively, BMD tests were performed on the proximal femur by using PIXlmus 2 (GE Lunar Co. USA), 2-dimensional bone morphometric analysis by custome computer program and 2D/3D bone structure analysis by micro-CT (Skyscan 1072, Antwerpen, Belgium). Statistical analysis was carried out for the correlation between bone morphometry, micro-CT and BMD Result : BV/TV, Tb.Th, Tb.N of micro-CT parameters showed higher values in sham group than OVX group. N.Nd/Ar.RI, N.NdNd, N.NdTm, N. TmTm, PmB/Ar.RI, 3-D BoxSlope of 2D morphometric parameters showed higher values in Sham group than OVX group. The micro-CT parameters of Tb.Sp, Tb.N were statistically significant correlated with BMD respectively. Several 2D morphometric parameters were statistically significant correlated with BMD respectively. Conclusion : Several parameters of 2D bony morphometry and micro-CT showed effective aspects on the osteoporotic bony change.
Kodak Insight 치과필름의 방사선학적 특성에 관한 연구
송영한,신민,이병도 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.1
The purpose of this study was to investigate the characteristic curve of new marketed, Insight dental X-ray film(Esatman Kodak Co. Rochester, NY, USA) Kodak Ultraspeed(DF-58), E-speed Agfa Dentus M2 and Kodak Insight(IP-21) films were radiographed with Trophy intra-oral radiographic machine. 10 steps exposure times such as 0.12, 0.22, 0.30, 0.40, 0.50, 0.62, 0.76, 1.02, 1.30, and 2.0 seconds were prepared and each step exposure were monitored onto FH 40G(ESM Eberline Instruments) dosimeter with those 4 types intra-oral films. All films were manually processed according to manufactures instruction. We measured radiographic densities of 6 sites of each processed film. Then we could make characteristic curves of 4 types intra-oral films with these dosimetric data and radiographic densities, based on ISO 5779. Base plus fog densities were measured from unexposed, processed films. We measured the film contrasts from average gradients of characteristic curves according to various radiographic density level. Film speed could be thought as an exposure of 1.0 above base plus fog density. We compared film contrast, speed and base plus fog density of Insight film with those of 3 other films. The obtained results were as follows; 1. E-speed film showed greatest average gradients followed by Insight film. E-speed and Ultraspeed film showed great average gradients on low density level. 2. Insight film showed a fastest speed followed by E-speed, Dentus M2 and Ultraspeed film 3. Dentus M2 film showed greatest base plus fog density level followed by Insight film. Therefore, Kodak Insight film showed fastest film speed with comparable film contrast on characteristic curve.
돈분 및 남은 음식물 급여가 육계의 사료섭취 및 음수행동에 미치는 영향
송영한,김창혁,이용준,임종규,이영철 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.1
This study was conducted to determine the effects of dietary swine manure and food waste on feeding and drinking behaviours in broiler chicks. A total of 240 birds with 40g of initial weight were randomly assigned in the 8$\times$3 randomized complete block design and 10 birds per replicate. Extrusion recycled feeds(ERF) were prepared by extruding a mixture of 40% swine manure+40% food waste(FW)+20% corn. The birds assigned to one of the 8 dietary regimens; 0, 10, 30, 40% ERF of 20, 40, 60% FW in the place of a commercial boiler starter diet. Video recording were made after one week of adaptation period to the regimen. The tapes were played in a slow motion to examine feeding and drinking behaviour. Feeding and drinking times were greater in the day time at the night. Feeding times peaked at 4 hour intervals. Drinking time increased about 2 times on FW feeding compared to the other treatment groups. The results indicated that feeding and drinking behaviour could be influenced by the dietary regimens and that FW feeding increased drinking. The data also suggested that the FW could replace within 40% of broiler starter diet.