• 제목/요약/키워드: SCP-1

검색결과 171건 처리시간 0.025초

섬유소를 이용한 단세포단백질의 생산 및 그 이용 (Production of Single Cell Protein on Rice Straw and Their Utilities)

  • 정영건;권오진
    • Applied Biological Chemistry
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    • 제38권6호
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    • pp.496-501
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    • 1995
  • Cellulomonas sp. KL-6 균주의 균체내 외 단백질은 배양 5일째에 $266\;{\mu}g/m{\ell},\;37\;{\mu}g/m{\ell}$로 가장 많이 생산하였다. 본 실험에서 사용한 KL-6 균주는 볏짚을 분쇄 후 1.0% NaOH와 10% $NH_4OH$$80^{\circ}C$에서 30분간 처리한 후 $H_3PO_4$로 중화하여 탄소원으로 이용하였을 때 각각 $1.63\;g/{\ell}$$1.47\;g/{\ell}$의 SCP가 생산되어 처리하지 않은 볏짚의 $0.5\;g/{\ell}$ 보다 균체수율이 증가되었다. KL-6 균주가 생산한 SCP의 필수아미노산의 함량이 FAO 표준단백질에 비해 많아 영양적 가치가 매우 우수하였다. 그러나 실제 동물사육에 이 균체를 이용코저 할 때는 균체의 세포벽을 파쇄후 사용해야 되리라 사료된다.

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차체 성형용 판재의 U 벤딩시의 스프링백에 관한 연구 (Investigation of Springback for the U-bending of Steel Sheets for Automotive body panels)

  • 김성환;신장모;장성호;서대교
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2001년도 추계학술대회 논문집
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    • pp.66-70
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    • 2001
  • The purpose of this paper is to investigate the characteristics of springback for the U-bending of steel sheets for automotive body panels. This study presents the experimental and analytical approach for the two kind of steel sheets, namely SCP1 and TRIP(Transformation-induced plasticity), the newly developed high strength steel. The adopted thicknesses are 0.8, 1.2 and 1.6 mm for SCP1, and 1.0 mm for TRIP. The punch profile radii are designed in 3, 6, 9, 12, and 15 mm. As results, the springgo aspect could be observed experimently in the small punch profile radius. The degree of springback for TRIP sheets was more than the SCP1 sheets.

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위성영상을 이용한 비접근지역의 지형정보 획득 및 정확도 평가 (Acquisition and Accuracy Assessment of topographic information of inaccessible areas)

  • 고종식;최윤수;김욱남;이상준
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2004년도 추계학술발표회 논문집
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    • pp.393-398
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    • 2004
  • It is transformed map data of different coordinate system into unique system and We triedto make topographic map on non-accessible area. We transformed Russian map coordinates(Krassovsky, G-K projection) intoWGS-84, TM projection and assessed accuracy. The RMSE(in East and West bearings : ${\pm}$13.67m, in North and South bearings : ${\pm}$14.67m) using only SCP(Survey Control Point) is more accurate than that(in East and West bearings : ${\pm}$24.26m, in North and South bearings : ${\pm}$25.32m) using SCP, intersection of road, bridge. Exterior orientation parameters are estimated using rigorous modelling and GCPs are classified with SCP, intersection of road, bridge. Rigorous modelling is performed with each classified GCP. The modelling result usingonly SCP(in East and West bearings : ${\pm}$13.53m, in North and South bearings : ${\pm}$14.22m) is more accurate than that using intersection of road(in East and West bearings : ${\pm}$16.l1m, in North and South bearings: ${\pm}$23.85m), bridge(in East and West bearings : ${\pm}$17.21m, in North and South bearings : ${\pm}$21.82m). The results means that SCP is more accurate than intersection of road, bridge because of edit to generate map. therefore, SCP is suitable for object of GCP in paper map(1:50,000). Geographic information on non-accessible area and analysis is performed. The results of stereoscopic plotting is well matched old map data on road, railroad but, many objects are generally editted. It is possible to update on new objects(building, tributary ‥‥etc). Ability of description using SPOT-5(stereo) is more than features and items included in 1:50,000 topographic map. Therefore, it is possible to make large scale map than 1:50,000 topographic map using SPOT-5 imagery. But, there are many problems(accurate GCPs, obtain of high resolution stereoscopic satellite imagery in a period ‥‥ etc) to make topographic map on non-accessible area. It is actually difficult to solve these problems. therefore, it is possible to update 1:50,000 topographic map in part of topographic map generation.

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SCP개량지반상에 성토시공 시 최적설계에 관한 연구 (Study on Optimum Design for Embankment Construction on Soft Ground Treated by SCP)

  • 채종길;박영목;정민수
    • 대한토목학회논문집
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    • 제29권6C호
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    • pp.251-258
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    • 2009
  • 본 연구에서는 모래다짐말뚝 (SCP)로 개량된 연약점토지반상의 성토시공에 있어서 최적설계조건에 대해 현행 설계법과 손실평가함수 및 1차 근사 2계 모멘트법 (AFOSM)에 기초한 신뢰성 설계법으로 비교 검토하였다. 결과를 요약하면 다음과 같다. 1) 안전율(Fs)와 파괴확률($P_F$)는 심한 비선형 관계를 나타냈고, Fs가 1.2로 증가함에 따라 $P_F$는 약 1%까지 급격한 감소를 나타낸 후, 안전율의 증가와 더불어 $P_F$는 점진적으로 감소하였다. 현행 설계법상의 기준 안전율 1.2는 둘의 관계에 있어서 일종의 임계값이며, 이들의 관계가 적절히 고려되어 정립되었다고 판단된다. 2) 최소기대총비용을 나타내는 안전율은 1.15부근으로 현행설계기준 1.2에 다소 못미치는 값으로 나타났고, 파괴확률은 1% 정도로 다소 컸다. 3) 응력분담비 n과 모래의 내부마찰각 ${\phi}$의 민감도가 연약층의 초기비배수강도 관련 변수들의 민감도보다 더 크게 나타났다. 이것은 n과 ${\phi}$의 변동 특성이 보다 해석결과에 큰 영향을 준다는 것과 이들 변동 특성은 SCP 개량지반상의 성토안정해석에 반드시 고려되어야 함을 의미한다. 4) 설계기준안전율 1.2 이상(파괴확률 0.1-0.3% 이하)에서 New Failure Point는 평균치에서 표준편차의 1~2배 가량 떨어져 있는 값을 나타냈다.

부산신항 1-1단계 SCP 개량지반 압밀 특성 (Consolidation Behavior of SCP Improved Ground at Pusan New Port Part 1-1)

  • 정종범;양상용;변기준
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2004년도 학술대회지
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    • pp.51-56
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    • 2004
  • The sand compaction pile (SCP) method, which forms a composite ground by driving sand piles into clay deposit, is the most commonly used soil improvement techniques in many countries for more than 30 years. Installation of sand compaction piles reduces the amount of consolidation settlement and increases the bearing capacity of soft clay deposit. In this paper, field survey conducted to investigated the consolidation behavior of the composite ground improved by SCPs. It is suggested that the measured consolidation velocity is later than design theory, however measured consolidation settlement is higher than design theory.

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모래다짐말뚝의 원심모델링 (Centrifugal Modeling of Sand Compaction Pile)

  • 유남재;정길수;김상진;채승호
    • 산업기술연구
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    • 제21권B호
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    • pp.187-193
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    • 2001
  • This paper is results of extensive centrifuge model experiments about design factors influencing the bearing capacity and the settlement behaviors of SCP (Sand Compaction Pile). Centrifuge model tests were carried out changing design factors for SCP method such as replacement area ratio (as= 20, 40, 70%), improvement ratio to footing width (W/B = 1, 2, 3), and amount of fines in sand pile (#200 = 5, 10, 15). Therefore, the effects of these design factors on the bearing capacity and the settlement behavior of SCP were investigated and changes of stress concentratio rato due to such an design factors were also investigated. Centrifuge model testing technique for preparing and installing centrifuge model of sand compaction pile, using freezing them, was also developed. As results of centrifuge model tests, more fines in sand compaction pile increases the bearing capacity of SCP. Optimum improvement ratio to footing width was found to be 2. Values of stress concentration ratio was in the ranges of 1.5 - 3.5. The depth of bulging in sand piles was found in the range of 2.0 - 2.5 times of pile diameter.

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모래다짐말뚝으로 개량된 연약지반의 응력분담특성 (Stress Concentration Characteristics of Soft Ground Treated by Sand Compaction Pile)

  • 유남재;박병수;정길수;김상진
    • 산업기술연구
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    • 제22권A호
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    • pp.145-151
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    • 2002
  • This paper is results of extensive centrifuge model experiments about design factors influencing the bearing capacity and the settlement behaviors of SCP (Sand Compaction Pile). Centrifuge model tests were carried out changing design factors for SCP method such as replacement area ratio (as= 20, 40, 70%), Improvement ratio to footing width (W/B = 1, 2, 3), and amount of fines m sand pile (#200 = 5, 10, 15). Therefore, the effects of these design factors on the bearing capacity and the settlement behavior of SCP were investigated and changes of stress concentratio rato due to such an design factors were also investigated. Centrifuge model testing technique for preparing and installing centrifuge model of sand compaction pile, using freezing them, was also developed. As results of centrifuge model tests, more fines in sand compaction pile increases the bearing capacity of SCP. Optimum improvement ratio to footing width was found to be 2. Values of stress concentration ratio was in the ranges of 1.5 - 3.5. The depth of bulging in sand plies was found in the range of 2.0 - 2.5 times of pile diameter.

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감귤과피 압착액을 기질로 한 SCP 생산 (SCP Production from Mandarin Orange Peel Press Liquor)

  • 강신권;성낙계
    • 한국미생물·생명공학회지
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    • 제17권6호
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    • pp.556-562
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    • 1989
  • The bioconversion of mandarin orange peel press liquor to single cell protein (SCP) by two yeast strains, F-60, and C-7, which were isolated from mandarin orange peel was carried out and compared with that of using Candida utilis IFO 0598. Experiments were directed toward the high yield of biomass and high protein in cultures of the strains mentioned above. Candida utilis IFO 0598, F-60 and C-7 strains were cultivated at 3$0^{\circ}C$, pH 5.2 for 3 days in shaking flasks. The effects of some nutrients on cell growth were studied. Cell mass and protein content per cell mass were increased by addition of urea 1%, KH$_2$PO$_4$ 0.1% and MgSO$_4$ㆍ7$H_2O$ 0.05%, When the F-60 strain cultured under the optimal conditions, cell mass, growth yield and protein content were 41.2g/l, 53.9%, 59.7%, respectively. Cell mass was also increased up to 15% by modifying the fermentation condition on the bench type 20l jar fermentor. Crude fat content (10.3%) of dried C-7 cell was higher than those of C. utilis and F-60, 4.9% and 5.6% respectively. Total protein content of the F-60 strain was 59.7% per dry weight. And we compared their amino acid compositions with that of FAO provisional pattern. In the case of the F-60 strains, amino acid contents such as lysine, leucine and isoleucine were much higher than those of methionine, cystine and tryptophan.

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Hydration and pH of the Stratum Corneum in High-risk Newborns in the First 2 Weeks of Life

  • Ahn, Young Mee;Sohn, Min;Lee, Sangmi
    • Child Health Nursing Research
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    • 제24권3호
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    • pp.345-352
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    • 2018
  • Purpose: The study was conducted to measure stratum corneum hydration (SCH) and pH (SCP) in high-risk newborns in the early postnatal period and to explore the features related to patterns of change in those parameters. Methods: SCH and SCP were measured on the dorsal hand in 99 hospitalized newborns during the first 14 days of life and the results were analyzed using a general linear model. Results: The mean hydration was 42.9% on day 1, which decreased to 34.6% by 2 weeks (F=15.61, p=<.001). An association was observed between SCH and prematurity (F=21.12, p<.001), as well as for their interaction (F=8.11, p<.001). The mean SCP was $6.2{\pm}0.3$ on day 1, and decreased to $5.7{\pm}0.2$ (F=95.75, p<.001), with no association with prematurity. After adjusting for birth weight, SCH was higher in newborns with vaginal delivery (F=9.07, p=.023) and who received phototherapy (F=11.81, p=.011). For SCP, only delivery type had a significant influence (F=6.40, p=.044). Conclusion: This study suggests that SCH is typically in the 30% range during the early postnatal period, and that an acid mantle on the SC surface is very unlikely to form; these findings could be applied to the nursing process for promoting skin integrity in high-risk neonates.