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김성삼,김주찬,구본국,고희석,Kim, Sung-Sam,Kim, Ju-Chan,Koo, Bon-Kook,Koh, Hee-Seog 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.1
본 논문에서는 철관이 들어있는 건축물의 기초를 대용접지극으로 활용하기 위해 콘크리트의 전기적 특성에 관해서 기초적 검토를 하였다. 철근이 들어있는 몰탈블록 모형과 콘크리트블록 모형을 제작 후 접지저항 측정 결과에 따르면, 철근의 수량에 의한 접지 저항값과 대지저항률 보다 블록의 저항율에 의한 접지 저항값이 크게 영향을 받는 것을 알 수 있었다. The electrical characteristics of concrete block including a reinforcing rod in the foundation of the housing was fundamentally reviewed. It was tried to apply the substitutional earthing electrode in the foundation of the building. In order to identify the difference in the earthing resistance between mortar block and concrete block model, those models including a reinforcing rod in their inside were prepared and investigated for the earthing resistance. In results, the earthing resistance was largely affected by the block's resistivity compared to the change of resistance in reinforcing rods and the ground resistivity.
김성삼,정만길,최종규,고희석,Kim, Sung-Sam,Jeong, Man-Gil,Choi, Jong-Kyu,Koh, Hee-Seog 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.2
건축물의 기초를 구조체접지 및 대용접지극으로 활용하기 위한 기초실험으로 모형블록의 저항률 특성에 관해 검토하였다. 콘크리트와 몰탈의 모형블록을 제작 후 상온과 함수 상태에서 저항률을 측정하였으며, 저항률을 저감시키기 위해 접지저항 저감제를 혼합한 블록을 제작 하여 비교 하였다. 블록의 저항 값은 블록 저항률에 의해 가장 많은 영향을 받으며, 블록 저항률이 동일하거나 유사한 값일 때 대지저항률 값의 차이만큼 접지저항 값의 차이가 발생하였다. This study analyzed the resistivity characteristic of model block to make the good use of structure grounding and substitution grounding electrode base of building. After making the model block of mortar and concrete block, it measured resistivity in hydrous condition and dry condition and compared with the blocks that is mixed earth resistance lowering agent to decrease resistivity. The resistance value of block accepted much influence by block resistivity. When the block resistivity was same or similar value, the value of soil resistivity has occurred as different as the value of grounding resistance.
적수온(20-24.5℃)에서 사육한 미성어기(384 g) 넙치 (Paralichthys olivaceus)의 배합사료 적정 공급률
김성삼 ( Sung-sam Kim ),김강웅 ( Kang Woong Kim ),김경덕 ( Kyoung Duck Kim ),이봉주 ( Bong Joo Lee ),한현섭 ( Hyon Sob Han ),김재원 ( Jae Won Kim ),배승철 ( Sung Chul Bai ),이경준 ( Kyeong Jun Lee ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.5
We investigated the effects of feeding rate on the growth, blood components, and histology of sub-adult olive floun-der Paralichthys olivaceus. Optimum feeding rate (initial fish mean weight : 384.2±5.91 g ) was determined under the optimum water temperature. Two replicated groups of fish were fed a commercial diet at rates of 0%, 0.3%, 0.5%, and 0.7% body weight (BW) per day, and to satiation. The feeding trial was conducted using a flow-through system with ten 1.2-metric ton aquaria receiving filtered seawater at 20-24.5℃ for 3 weeks. After the feeding trial, the weight gain (WG) and specific growth rate (SGR) were significantly higher in fish fed at 0.7% BW/day and those fed to satiation (0.9% BW/day) than in fish fed at other feeding rates or in the unfed fish. These parameters were negative and sig-nificantly lower in the unfed fish than in those fed the experimental diet at all feeding rates. There were no significant differences in WG and SGR among fish fed at 0.3 and 0.5% BW/day and among those fed at 0.7% BW/day and to satiation. The histological changes in the hepatopancreas, kidney, and anterior intestine of fish fed at 0, 0.5, and 0.9 % BW/day did not differ much. Broken-line regression analysis of weight gain showed that the optimum feeding rate of olive flounder weighing 384 g was 0.74% BW per day at the optimum water temperatures.
김성삼(Sung-Sam Kim),최종규(Jong-Kyu Choi),김재성(Jae-Sung Kim),고희석(Hee-Seog Koh) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
In this paper was analyzed and compared the resistivity characteristic of concrete between moisture condition and dry condition to measure the variation of resistivity by water after making concrete scale block. The resistivity was decreased when the moisture of concrete block was gradually increased.
김성삼(Sung-Sam Kim),이충식(Chung-Sik Lee),최종규(Jong-Kyu Choi),김주찬(Ju-Chan Kim),고희석(Hee-Seog Koh) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월
The electrical characteristics for applying the foundation of the house to the substitutional earth electrode was reviewed fundamentally. In order to measure the earth resistance in the foundation of the house, it was performed to investigate the effect of the electrode arrangements and configurations concerning to grounding methods, and tried to the adequate simulation for comparing those experimental data. The number of steel rods and the ground resistivity were affected to change the earth resistance, but the latter caused the large variation in its resistance compared to the former in this experiment. Since the large surface area in the foundation of the house have contacted the ground usually, it is possible to use the earth electrode substitutionally.
저수온(12-14℃)에서 사육한 미성어기(370 g) 넙치( Paralichthys olivaceus )의 배합사료 적정 공급률
김성삼 ( Sung Sam Kim ),김강웅 ( Kang Woong Kim ),김경덕 ( Kyoung Duck Kim ),이봉주 ( Bong Joo Lee ),한현섭 ( Hyon Sob Han ),이경준 ( Kyeong Jun Lee ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6
We investigated the effects of feeding rate on the growth performance and blood components of sub-adult olive flounder Paralichthys olivaceus . Optimum feeding rate (initial fish mean weight : 370±5.72 g) was determined under the low water temperature. Two replicated groups of fish were fed a commercial diet at rates of 0%, 0.3%, 0.4%, 0.5%, and 0.6% body weight (BW) per day, and to satiation (0.75%). Feeding trial was conducted under a flow-through system with 12 1.2-metric ton aquaria receiving filtered seawater at 12-14°C for 4 weeks. Weight gain (WG) and specific growth rate (SGR) for fish fed at 0.6% BW per day was significantly higher than that of unfed fish (0%) and fish fed at 0.3% and 0.4% BW per day. There were no significant differences in WG and SGR among fish fed at 0.5%, 0.6%, and 0.75%. These parameters were negative and significantly lower in the starved fish than in fish fed the experimental diet at all feeding rates. Survival for unfed fish (0%) was significantly lower than that of fish fed at 0.4%, 0.5%, and 0.6%. Hematocrit and hemoglobin content of fish fed at 0% and 0.75% (satiation) were significantly lower than that of fish fed at 0.4% BW per day. Total protein content in unfed fish was significantly lower than those in other treatments. Broken-line regression analysis of weight gain showed that the optimum feeding rate of olive flounder weighing 370 g was 0.51% BW per day at the low water temperature.
김성삼(Sung-Sam Kim),김주찬(Ju-Chan Kim),최종규(Jong-Kyu Choi),이충식(Chung-Sik Lee),고희석(Hee-Seog Koh) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.11월
In recent years the developments of the society in information technology so the building is required protective earthing to prevent electric shock and the building is also required functional earthing to guarantee safe operation of dispatch instrument of information. This paper is reviewed about an estimation of earthing resistance that is considered the shape and size of the plate electrode in order to do practical use as earthing electrode of foundation the plate electrode in the foundation of building.
사료 내 단백질과 지방 수준이 참돔(Pagrus major) 치어의 성장, 사료효율 및 비특이적 면역력에 미치는 영향
김성삼 ( Sung Sam Kim ),오대한 ( Dae Han Oh ),최세민 ( Se Min Choi ),김강웅 ( Kang Woong Kim ),김경덕 ( Kyoung Duck Kim ),이봉주 ( Bong Joo Lee ),한현섭 ( Hyon Sob Han ),이경준 ( Kyeong Jun Lee ) 한국수산과학회 2015 한국수산과학회지 Vol.48 No.3
A 3×3 factorial study was conducted to investigate the effects of dietary protein and lipid levels on the growth, feed utilization and innate immunity of red seabream Pagrus major. Nine diets consisting of three protein levels (42%, 46% and 50% crude protein) and three lipid levels (10%, 14% and 18% crude lipid) were formulated. Triplicate groups of red seabream were fed the experimental diets to apparent satiation (5-6 times a day, from 08:00 to 18:00 h at 2-h intervals) for 10 weeks. At the end of the feeding trial, the weight gain and specific growth rate of fish fed P46L14 (46% protein and 14% lipid), P50L10 (50% protein and 10% lipid) and P50L14 (50% protein and 14% lipid) were significantly (P<0.05) higher than those of fish fed P42L18 (42% protein and 18% lipid). The feed conver-sion ratios (FCR) of the fish were affected by dietary lipid levels (P<0.039), but not dietary protein levels. The FCR tended to increase with increasing dietary lipid levels from 10% to 18% with the 46% and 50% protein levels. The weight gain, protein efficiency ratio, specific growth rate, feed intake and survival of fish were not affected by either dietary protein or lipid levels. Myeloperoxidase activity in the group fed P50L14 (50% protein and 14% lipid) was significantly higher than that in the group fed P42L10 (42% protein and 10% lipid) or P50L18 (50% protein and 18% lipid). However, the myeloperoxidase activity of fish was not affected by either dietary protein or lipid level. The fish fed P46L14 (46% protein and 14% lipid) and P46L18 (46% protein and 18% lipid) showed significantly higher superoxide dismutase activity than did the fish fed P46L10 (46% protein and 10% lipid), P50L10 (50% protein and 10% lipid) of P50L18 (50% protein and 18% lipid). In conclusion, the optimum protein and lipid levels for the growth and feed utilization of juvenile red seabream were 46% and 14%, respectively, and the optimum dietary protein to energy ratio was 27.4 g/MJ.