• 한국생활과학회지
• /
• 제15권2호
• /
• pp.275-281
• /
• 2006

The purpose of this study is to investigate hand and sensibility of PET treated by Ultra-Violet (UV). The 4-channel PET knit fabric was treated by a self-made UV instrument in 5cm distance with different time frames-0min, 30min, and 90min. For hand evaluation, mechanical properties were measured by the KES-FB system. The environmental condition was controlled at 29$^{\circ}C$, 75% (R.H.)-summer standard climate. Twenty female students evaluated 'roughness', 'smoothness', 'wetness', 'stiffness', 'coolness', 'touch', 'preference', and 'comfort'. The outcomes of the experiment are as follows: The surface roughness of mechanical properties showed significant differences and the value of PET irradiated by UV for 90min was highest. The order of primary hand value such as NUMERI and FUKURAMI was in a following order-Untreated > 30min treated > 90min treated. Total hand value showed that PET irradiated by UV for 90min was appropriate for using summer fabric. The results of subjective sensibility were that the untreated and 30min treated PET were recognized as similar and had a good evaluation on 'comfort', 'preference' and 'the sense of touch'. This consequence disagreed with total hand value, because it was considered that subjects' hand sensibility was dependent on the feel of smoothness.

• 정보처리학회논문지A
• /
• 제8A권2호
• /
• pp.99-106
• /
• 2001

본 논문에서는 다단계 상호연결망(MIN)을 기반으로 하는 다중컴퓨터에서의 고장 허용 멀티캐스팅에 대해 연구한다. 프로세싱 노드간 일대일 라우팅뿐만 아니라, 효율적인 멀티캐스팅은 다중컴퓨터의 성능에 영향을 주는 중요한 요소이다. 본 논문은 스위칭 소자이 고장을 허용하는 멀티캐스팅 알고리즘을 제안한다. 제안된 알고리즘은 멀티캐스트 목적지들을 표현하기 위해 큐브 부호화 방식을 사용하며, 고장을 우회하기 위해 순환 기법을 기반으로 한다. 이 알고리즘은 다수의 고장 스위칭 소자가 있는 MIN에서 임의의 멀티캐스트 메시지를 두 번 순환시켜 라우팅할 수 있다. 그리고, MIN의 구조적 특성을 이용하여 본 알고리즘의 정확성을 증명한다.

• 한국정밀공학회지
• /
• 제16권10호
• /
• pp.11-16
• /
• 1999

In this study, Ultra-precision finishing system using micro abrasive film experimented using experimental variable film feed speed and grinding speed and structural steel(SM45C) with respect to 12~3{\mu}m$ micro abrasive film. the result are follows; (1) Experimental condition must setup dissimilar about each micro abrasive film. (2) To measurement deviation the smallest machined condition are 20mm/min in 12{\mu}m$, 5mm/min and 15mm/min in 9{\mu}m$ and 5{\mu}m$, 5mm/min in 3{\mu}m$ in film feed speed. (3) To measurement deviation the smallest machined condition are 180m/min in 12{\mu}m$, 84m/min in 9{\mu}m$, 56 and 84m/min in 5{\mu}m$, 104m/min in 3{\mu}m$ in grinding speed.

• 한국식품영양과학회지
• /
• 제27권2호
• /
• pp.286-290
• /
• 1998

The effects of cooking methods and storage time on folate content in spinach were determined by boiling for 1, 2, 3, 4, 5, 10 and 20min in distilled water or by microwave blanching for 20, 40, 60, 80, 100 sec. The folate content of cooked spinach was decreased to 80.7% after 1min boiling, and to 5.5% after 20min boiling. The folate recovered from the cooked spinach and cooking water was 101.1% after 1min, 68.0% after 2min and 51.3% after 3min. The relative folate content leached out of the cooked spinach into the cooking water varied from 20.2% after 1min boiling to 88.8% after 20min boiling. Total folate content of spinach was decreased to 45% by microwave heating for 40sec. However, the spinach cooked by microwave heating retained more folate due to the minimal loss of folate into cooking water. More than 90% of folate content of spinach was retained during 1 to 2 weeks of storage at 4$^{\circ}C$.

• Structural Engineering and Mechanics
• /
• 제19권3호
• /
• pp.297-320
• /
• 2005

In recent years the pure displacement formulation for plate elements has not been as popular as other formulations. We revisit the pure displacement formulation for shear-deformable plate elements and propose a family of N-node, displacement-compatible, fully-integrated, pure-displacement, triangular, Mindlin plate elements, MIN-N. The development has been motivated by the relative simplicity of the pure displacement formulation and by the success of the existing 3-node plate element, MIN3. The formulation of MIN3 is generalized to obtain the MIN-N family, which possesses complete, fully compatible kinematic fields, in which the interpolation functions for transverse displacement are one degree higher than those for rotations. General element-level formulas for the thin-limit Kirchhoff constraints are developed. The 6-node, 18 degree-of-freedom element MIN6, with cubic displacement and quadratic rotations, is implemented and tested extensively. Numerical results show that MIN6 exhibits good performance for both static and dynamic analyses in the linear, elastic regime. The results illustrate that the fully-integrated MIN6 element has excellent performance in the thin limit, even for coarse meshes, and that it does not require shear relaxation.

• 한국식품저장유통학회지
• /
• 제11권1호
• /
• pp.130-133
• /
• 2004

고품질 참외 농축액을 제조하기 위해 농축공정에서 중요한 변수로 작용하는 가열온도 및 가열시간을 달리하면서 제조한 농축물에 대한 관능적 평가를 실시한 결과, 가열 후 맛이 최대평점을 나타낸 조건은 가열온도가 96.63$^{\circ}C$ 및 가열시간이 14.31 min일 때 였으며, 전반적인 기호도가 가장 높은 조건은 가열온도가 97.18$^{\circ}C$ 및 가열시간이 14.55 min일 때였다. 가열온도 및 가열시간을 달리하면서 실험한 결과 참외 농축액 제조를 위해서는 가열온도 98$^{\circ}C$로, 가열시간 13 min으로 처리하는 것이 적당하였다.

• 한국가스학회지
• /
• 제20권5호
• /
• pp.34-39
• /
• 2016

디젤자동차용 소형브라운가스 생성 장치의 개발을 위하여 전극 셀의 재료로서 SuS와 Ni 및 Ag기반 셀을 제조하고 셀의 면적과 전해질의 농도 및 전류의 세기를 변화시켜 브라운가스 생성특성을 실험적으로 분석하였다. 전기분해 반응기는 셀의 표면적 및 전극 -극과 +극 배치를 다르게 하여 SMT30, SMT50, SMT50-1, SMT70, SMT90로 제조하였다. 이 때 각 반응기의 따른 브라운가스 생성특성은 셀의 접촉 면적이 클수록 생성특성이 증가하는 경향을 보였으며 전극배치의 경우는 같은 전극면적에서도 극의 배치 따라 차이가 있는 것을 보였다. 또한 전해질의 농도에 대한 영향은 NaOH를 1~3‰로 변화시켰을 때 농도가 적을수록 생성특성이 증가하였고, 전류의 세기의 따른 생성특성은 SMT30, SMT50, SMT50-1, SMT70, SMT90에서 각각 $0.74{\ell}/10min$, $1.0{\ell}/10min$, $1.10{\ell}/10min$, $0.97{\ell}/10min$, $1.13{\ell}/10min$가 얻어졌다.

• ALGAE
• /
• 제19권1호
• /
• pp.7-14
• /
• 2004

Blue-Min was initially developed as an adsorbent for harmful gas removal and recently improved to apply to livestock, agriculture and aquaculture as an assistant feed. In the Blue-Min treatment, growth of harmful algae (Cochlodinium polykrikoides and the others causing the red-tide in the ocean) were inhibited below 10% in comparison with control and coagulation removal of harmful alge with Blue-Min treatment was more efficient than that of yellow loess treatment. It would be expected that the Ble-Min can be useful for the extirpator against the red-tide organisms and restrain the toxic algal growth around the fish aquaculture using the assistant feed. Recently, its utility has become to be diverse as it was revealed that aquaculture productivity increase by its application and, in addition, that it improve the water quality or sediment conditions in the aquaculture of Chinese White Shrimp. When Blue-Min was treated with the proper dose, the growth inhibition of Microcystis aeruginosa and lsochrysis galbana, which are typical red-tide organisms in freshwaters and food organisms in aquaculture, respectively, were less than that of marine red-tide organisms, while their growth slightly increased with low concentration treatiment. In addition, polyunsaturated fatty acids (PUFA) content of I. galbana slightly increase with the Blue-Min treatment. Through our research, the Blue-Min has diverse and comples function against various biological organisms and is proved as a biological activator or depressor.

• Biomolecules & Therapeutics
• /
• 제5권2호
• /
• pp.179-186
• /
• 1997

The pharmacokinetics and tissue distribution of DWP20373, a novel fluoroquinolone, were examined in rats and beagle dogs after a single intravenous and oral administration. Analysis of DWP20373 in plasma, tissue, and urine was performed by both HPLC and microbiological assay. The plasma drug concentration declined biexponentially both rats and beagle dogs. In the rats, the terminal drug elimination half-life (t$_{1}$2$\beta$/) was 64 min (IV) and 57 min (PO) by bioassay, and 76 min (IV) and 77 min (PO) by HPLC. Whereas in beagle dogs, t$_{1}$2$\beta$/ was 196 min (IV) and 350 min (PO). The volume of distribution at steady-state (Vd$_{ss}$ ) was 811 ml/kg (bioassay) and 2061 ml/kg (HPLC) in rats, and 2738 ml/kg (bioassay) in beagle dogs. The total body clearance (Cl$_{t}$) of DWP20373 was 10 ml/min/kg (bioassay) and 7 ml/min/kg (HPLC) in rats, and 11 m1/min/kg (bioassay) in beagle dogs. The extent of bioavailability after oral administration was 49% (bioassay) and 67% (HPLC) in rats, and 84% (bioassay) in beagle dogs. The 24-h urinary recovery, measured by bioassay, was 2.7% after oral dosing and 5.5% after intravenous dosing in rats. Serum protein binding ratio determined at 27g/ml was 78%. This drug was also distributed in tissues in the decreasing order of liver, kidney, spleen, lung, heart, and muscle determined at 30 min after oral administration.on.

• Applied Biological Chemistry
• /
• 제46권2호
• /
• pp.107-112
• /
• 2003

천마를 채취한 그대로 이용하는 데에는 생체보존에 따른 불편, 독성 그리고 자극성 등의 부작용으로 간단한 전처리 과정이 필요하다. 본 연구에서는 천마를 이용한 가공제품의 개발을 위한 전처리 과정 중 증자 조건별로 천마의 항산화적 특성을 반응 표면 분석법으로 모니터링하여 최적 증자 조건을 설정하였다. 총페놀성 화합물의 함량은 증자온도 $94.43^{\circ}C$, 증자시간 42.38min에서 최적이었고 전자 공여능은 증자온도 $101.67^{\circ}C$, 증자시간 41.09min에서 최적조건이었다. 항산화능 및 아질산염 소거능은 $100^{\circ}C$, 40min의 동일조건에서 최적으로 나타났다. 위 항산화적 특성의 증자조건을 종합하여 superimposed contour map으로 최적조건을 예측한 결과, 증자온도 96{\sim}107{\circ}C$, 증자시간 $28{\sim}46min$으로 나타났다. 예측된 임의의 증자조건 $100^{\circ}C$, 40min으로 실제 항산화 관련값을 측정한 결과 예측값의 $95.9%{\sim}115.6%$으로 유효성이 높게 나타났다.