• 한국군사과학기술학회지
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• 제9권1호
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• pp.13-23
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• 2006

A propellant mainly consisting of nitric ester including nitrocellulose and nitroglycerine is characteristic of being decomposed naturally. And this phenomenon is known as being affected mostly by its storing temperature and humidity. In this research, the effect of storing temperature and humidity on self life has been studied by measuring the contained quantity of residual stabilizer of propellant KM30Al, which are parts of 155MM propelling charge K676 and K677; the method for the measurement is acceleration aging test, and decomposition reaction equation, Eyring Equation and Berthlot Equation were used for the calculation. As result of this study, it was found that the storing temperature influenced seven times as large as the storing humidity upon the self life of the propellant KM30Al, Furthermore, especially in the high temperature region, the storing temperature had a dominant effect on the self life.

• 한국초지조사료학회지
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• 제21권2호
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• pp.75-80
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• 2001

This experiment was carried out to determine the effect of storing method and wrapping frequency on the quality of round baled rice straw silage at experimental field of Grassland and Forage Crops Division, National Livestock Research Institute, RDA, Suwon fro 1999 to 2000. Storing methods consisted of erect and lay type, and wrapping frequencies were composed to 2, 4, 6, 8 and 10 film layers. there were no significant difference in feed value between storing methods, but acidity of lay type was significantly higher than that of erect type. According to the wrapping frequency, crude protein(CP) content of 2 film layers treatment was lowest during 6 month storing periods, and that of 4 film layers treatment was lowest during 10 month storing periods. The two film layers treatment which was stored for 10 month was impossible for ruminant to feed it, because it was rotten severely. Storing for 6 month, 2 film layers treatment represented highest pH value by 8.23 and storing for 10 month, 4 film layers treatment showed highest pH value by 7.17. Most of silage ranked grade 3 in quality grade. According to this experiment, it was recommended that application of round bale silage system to fresh rice straw should wrap above 4 film layers for 6 month, and above 6 film layers for 10 month storing periods.

• 한국공간정보시스템학회 논문지
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• 제9권2호
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• pp.35-53
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• 2007

GML은 OGC(OpenGIS Consortium)에서 공간지리정보의 저장 및 전송을 위한 인코딩 표준으로 제안한 마크업 언어이다. 일반적인 공간 네트워크 데이터베이스에서 GML 지원을 위한 연구는 GML 문서의 파싱, GML 문서의 저장, 그리고 GML 문서의 질의어로 분류된다. GML 문서 저장에 관한 연구는 효율적인 GML 문서 검색을 위해 필수적인 연구이다. 그러나 GML 문서의 저장 스키마에 관한 연구는 거의 전무한 형편이다. 또한 기존 XML 문서 저장 스키마는 공간지리정보 저장에 적합하지 않다. 따라서 본 논문에서는 공간지리정보를 포함한 GML 문서를 효율적으로 저장하기 위한 저장 스키마를 제안한다. 아울러 제안하는 저장 스키마의 성능평가를 실시한다.

• Journal of Yeungnam Medical Science
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• 제9권2호
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• pp.224-238
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• 1992

간 섬유화에서 fat-storing cell의 변화를 미세 구조학적 측면에서 관찰하고자, 사염화탄소를 mineral oil에 녹여 1 : 1로 회석한 후 Kg당 0.5 ml의 용량을 주 2회씩 12주간 흰쥐에 복강 주입하였다. 실험기간 동안 1주 간격으로 도살하고, 적출된 간조직을 광학현미경과 연역조직화학적 검사 및 전자현미경으로 관찰하여 다음과 같은 결과를 얻었다. 광학현미경적 소견상 소엽 중심주의 염증 반응 및 세포 침윤 현상은 사염화탄소 투여 후 1주부터 나타나서 4주 째 가장 심하였으며, 이시기에 desmin염색 반응 양성세포의 수도 증가되었다. 괴사 및 섬유화는 2주부터 나타나기 시작하여 6주부터 결절이 형성되기 시작하였고 괴사성 병변은 8주까지 지속되었다. 그러나 세포 침윤 정도는 감소되면서 desmin에 대한 반응성도 낮아졌고, 경변성 변화는 10주 이후부터 나타났다. 전자현미경적 소견상 fat-storing cell의 숫적 증가는 1주부터 관찰되었으며 지방적이 감소하고 rER이 팽창된 이행세포는 2주째 출현하여 4주에 가장 현저히 증가되었다. 섬유아세포는 3주부터 나타나기 시작하였는데, rER이 확장되었으며 지방적은 없거나 1-2개의 소적이 세포돌기에서 관찰되었다. 섬유화가 진행됨에 따라 이행세포 및 fat-storing cell은 감소하고 섬유아세포는 증가된 상태를 유지하였다. 이상의 결과로 보아 fat-storing cell은 간섬유화 과정에서 활성화되고 증식하여 형태학적으로 이행세포 및 섬유아세포로 전환함으로써, 정지상태에 있는 섬유아세포의 전구체로서 간섬유화에 중요한 역할을 하는 것으로 사료된다.

• 한국식품조리과학회지
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• 제14권4호
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• pp.313-326
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• 1998

The quality of physical characteristics were measured, using sensory evaluation and mechanical characteristics where different storing temperature and period on Gukhwa-Byung, which is made of different percentages of Gukhwa (0%, Gukhwa powder：1%, 3% and 5%, and Gukhwa flower：1%, 3% and 5%) were added to rice flour, to promote the use of and liking for rice cakes that are a kind of korean traditional foods. The sensory evaluation showed that it is generally fine right after being made. Especially group F3 was evaluated the best for color, feeling after-swallow and overall-quality. As for color alone, it fumed out to be most distinctive in group F3 after storing 24 hours at 4$^{\circ}C$, in group F1 after 24 hours at 10$^{\circ}C$, in group F1 and F3 after 24 hours at 30$^{\circ}C$ and in group F1 after 48 hours at 30$^{\circ}C$, Gukhwa-Byung added with Gukhwa flower takes the higher degree of preference than the one with Gukhwa powder. Moisture decreased and overall-quality deteriorated as the storing time passed. The value of lightness in the color of Gukhwa-Byung, reduced as Gukhwa content increased and storing temperature rose. The values of red color and yellow color increased as Gukhwa content increased. In a mechanical texture measurement, springiness was high in group P5 right after being made. And it was high after storing 72 hours at 4$^{\circ}C$ and after 96 hours at 10$^{\circ}C$, and there was a significant difference according to Gukhwa content (p＜.05). Springiness remained unchanged after storing, 24 hours at 30$^{\circ}C$. Cohesiveness was high in every group of P1, P3 and P5, in which Gukhwa powder was added, right after being made, but as temperature rose and time passed, it heightened in group F3, in which 3% of Gukhwa flower was added. In all the samples, hardness gradually increased as the storing time at each temperature passed, and decreased as Gukhwa content increased. Chewiness was getting high as the storing time passed and temperature lowered. Color in sensory evaluation and the value of lightness in mechanical measurement showed a positive correlation at storing temperature 4$^{\circ}C$ and 10$^{\circ}C$ (p<.01). Softness and the value of lightness showed a negative correlation (p<.05). In sensory evaluation, softness and moisture showed a negative correlation with the value of lightness when storing at 30$^{\circ}C$.

• 한국정밀공학회지
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• 제26권2호
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• pp.126-132
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• 2009

This study examined the differences in spatio-temporal parameters, joint angle, ground reaction force (GRF), and joint power according to the changes of gait speed for trans-tibial amputees to investigate the features of the energy-storing foot for sports. The subjects walked at normal speed and at fast speed, wearing a single-axis type foot (Korec) and an energy-storing foot for sports (Renegade) respectively. The results showed that Renegade yielded faster gait speed as well as more symmetric gait pattern, compared to Korec. However, as gait speed was increased, there was no significant difference in kinematics, ground reaction force, and joint power between two artificial foots. This was similar to the results from previous studies regarding the energy-storing foot, where the walking velocity and gait symmetry have been improved. Nevertheless, the result of this study differed from the previous ones which reported that joint angle, joint power, and GRF increased as the gait speed increased except spatio-temporal parameters.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2004년도 제29회 KOSCI SYMPOSIUM 논문집
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• pp.17-23
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• 2004

In the present work, the numerical model was refined to predict the thermal analysis of energy storage in a fixed beds during (charging ,storing, discharging) mode. The governing energy equations of both fluid and the solid particles along with their initial and boundary conditions are derived using a two-phase, one dimensional model. The refined model is carried out by taking into account change of (air density , air specific heat) with air temperature and also by taking into considerations heat losses from bed to surrounding. Finite difference method was used to obtain solution of two governing energy equations of both fluid and solid particles through a computer program especially constructed for this purpose. The temperature field for the air and the solid are obtained, also efficiency of energy stored inside the bed is computed. Finally using refined model the effect of air flow rate per unit area Ga (0.2, 0.3, and 0.4 kg/$m^2$-s), and inlet air temperature (200, 250, 300 $^{\circ}C$) on energy storage characteristics was studied in three mode ( charging ,storing, discharging). The rock particles of diameter 1 em is used as bed material in this research.

• 한국콘텐츠학회논문지
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• 제7권1호
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• pp.155-160
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• 2007

SCORM에서 학습 자원은 공유 가능 콘텐츠 객체 또는 하나 이상의 애셋(asset)으로 구성된다. 이러닝 환경에서 애셋을 신속하게 검색하고 재사용할 수 있는 저장 방법이 필요하지만 아직 관련된 연구가 거의 없다. 본 논문에서는 클러스터에 기반을 둔 애셋의 저장 방법을 제안하고 수학적으로 정형화하여 정의하였다. 또한, 애셋을 평가하는 기준과 각 애셋을 평가하는 절차를 제시하였다. 실험을 통하여 제안한 클러스터저장 방법에 기반을 둔 검색이 텍스트 카테고리화에 기반한 검색보다 처리시간과 정확도 측면에서 성능이 우수함을 보였다.

• International Journal of Industrial Entomology and Biomaterials
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• 제9권2호
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• pp.269-272
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• 2004

Different methods of cold storing of bivoltine eggs are in practice to postpone hatching. Bivoltine eggs undergo hibernation if they are not acid treated within 20 - 24 hrs of oviposition, which depends on race, ambient temperature and humidity. The schedules adopted for cold storing include hibernation schedule (Hib), ordinary chilling (OC), short term chilling (STC) and acid treated layings (AT). Peanut cocooning race ${NB_4}{D_2}$ has been subjected for the present assessment. Cocoons harvested from the crop pertaining to all the four methods of cold storing have been used for producing different combinations and acid treated followed by rearing. The performance in respect of chawki loss, maximum larval weight 4({5^th} age)$, yield/ 10,000 larvae (no), cocoon and shell weight showed maximum values for hibernation ${\times}$ hibernation combination followed hibernation with OC and hibernation with AT. Lowest performance was recorded when STC batch source females were used.

• 한국작물학회지
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• 제59권2호
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• pp.134-138
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• 2014

도라지를 수확 후 진공포장, 밀폐포장, 질소가스포장 후 저온과 상온에 100일 동안 저장하면서 저장 50일과 100일에 도라지 경도와 사포닌 함량을 조사한 결과를 요약하면 아래와 같다. 1. 저장온도에 따른 도라지의 경도는 저온저장이 상온저장보다 높게 나타났으며, 저장기간이 길어질수록 도라지의 경도는 낮아졌다. 2. 저장방법에 따른 도라지의 경도는 저장 50일차 지퍼팩을 이용한 밀봉에서 1,765 g으로 가장 높게 나타났으며, 저장온도와 저장방법과의 상호작용에서는 고도의 유의성($P{\leq}0.01$)이 인정되었다. 3. 저장온도에 따른 platycodin D3, polygalacin D, 그리고 deapioplatycodin D의 함량조성이 다르게 나타났다. 4. 저장기간에 따른 platycodin D3와 polygalacin D의 함량은 저장 50일 이후 감소하는 경향을 보였지만, deapioplatycodin D는 저장기간이 길어질수록 증가하는 경향을 보였다.