• 한국잠사곤충학회지
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• 제39권2호
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• pp.174-179
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• 1997

The larval head capsule width, larval weight and length of mulberry longicorn beetle, Apriona germari Hope were measured when the larvae were exuviated in artificial diet rearing. The larval head capsule width from the 1st to the 12th instar was ranged from 0.12 to 0.69 cm, and growth ratio of each instar was significantly high between the 1st and the 2nd instars. The fitness to Dyar's law for the larval head capsule width was 87.6%. When the logarithum of the larval head capsule width is plotted against the number of instars, the calculated regression line was LogY=0.12086+0.06998X and Dyar's constant was 1.18. The larval weight was increased with larval developmental stages, and the coefficient of variation of larval weight was apparently high. But the calculated regression line was LogY=-0.91592+0.25959X and Dyar's constant was 1.25. The growth ration of the larval length was clearly high between the 2nd and the 3rd instars, and that of larvae from the 4th instar was decreased. The calculated regression line was LogY=-0.16932+0.09841X and Dyar's constant was 1.25. In conclusion, our results suggested that the larvae growth of mulberry longicorn beetle appeared to be highly related in the larval head capsule width, larval weight and length.

• 물과 미래
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• 제26권4호
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• pp.97-105
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• 1993

본 논문은 캡슐밀도의 균일성의 영향을 고려하여 관로내에서의 원통형 캡슐 흐름의 특성을 이해하기 위하여 수행된 연구결과를 기술한다. 캡슐의 중심 축방향으로의 밀도변화 영향을 실험적으로나 분석적인 방법으로 연구하였다. 실험은 직경 190mm, 길이 17m인 관에서 수행되었으며, 속도, 캡슐의 기울기, 캡슐바닥과 관과의 간격이 여러 가지 실험 조건하에서 측정되었다. 실험데이타를 해석하기 위하여 무차원 변수로 주어지는 안정성지수(Stability Index)가 유도되었다. 관로에서의 캡슐의 거동은 안정성 지수에 크게 영향을 받는다. 실험결과는 안정성 지수가 캡슐거동과 캡슐밀도의 균일성과의 상관관계를 잘 설명하여주는 유효한 기준임을 증명하였다.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2011년 춘계학술대회논문집
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• pp.504-507
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• 2011

The inertial migration of a two-dimensional elastic capsule in a channel flow was studied over the Reynolds number range $1{\leq}Re{\leq}100$. The lateral migration velocity, slip velocity, and the deformation and inclination angle of the capsule were investigated by varying the lateral position, Reynolds number, capsule-to-channel size ratio(${\lambda}$), membrane stretching coefficient(${\Phi}$), and membrane bending coefficient(${\gamma}$). During the initial transient motion, the lateral migration velocity increased with increasing Re and ${\lambda}$ but decreased with increases in ${\Phi}$, ${\gamma}$ and the lateral distance from the wall. The initial behavior of the capsule was influenced by variation in the initial lateral position ($y_0$), but the equilibrium position of the capsule was not affected by such variation. The balance between the wall effect and the shear gradient effect determined the equilibrium position. As Re increased, the equilibrium position initially shifted closer to the wall and then moved towards the channel center. A peak in the equilibrium position was observed near Re=30 for ${\gamma}=0.1$, and the peak shifted to higher Re as ${\gamma}$ increased. Depending on the lateral migration velocity, the equilibrium position moved toward the centerline for larger ${\gamma}$ but moved toward the wall for larger ${\Phi}$ and ${\gamma}$.

• 동의생리병리학회지
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• 제20권5호
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• pp.1364-1368
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• 2006

The purpose of this study is to identify the clinical effects of Gyebongnyeong capsule in the treatment of primary dysmenorrhea patients. We studied ten patients visit Se-Myung University Oriental Medical Center from February, 2005 to March, 2005. Women with organic disease such as ut. myoma, ov. cyst and pelvic inflammatory disease were excluded from this study. We treated them with Gyebongnyeong capsule for two menstrual cycles. The severity of dysmenorrhea were measured by VAS (Visual Analog Scale) and Patient's Global Assessment. Gyebongnyeong capsule significantly decreased the severity of dysmenorrhea. Gyebongnyeong capsule did not show hepatic and renal virulence. This study shows that Gyebongnyeong capsule has remarkable effects on dysmenorrhea patients.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.1055-1058
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• 2005

In the ACPF(Advanced spent nuclear fuel Conditioning Process Facility), the spent fuel pellets which are highly radioactive materials are separated with its clad and are fed into the next conditioning process. For this, at the other facility called PIEF(Post Irradiation Examination Facility) a spent fuel rod, 3.5 m long, is cut by 25 cm long which is suitable length fur the decladding process. These rod-cuts are packed into the capsule and are moved to the ACPF. Once the capsule is unloaded in the ACPF, the rod-cut is taken out one-by-one from the capsule and installed on the decladding device. In these processes, the crushed spent fuel pellet can be scattered inside the facilities and thus it contaminate the hot cell. In this paper, we developed the specially designed capsule which prevents the pellets scattering and remarkably reduces the leading and unloading time of the rod-cuts.

• Journal of Yeungnam Medical Science
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• 제23권1호
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• pp.131-137
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• 2006

Small bowel tumors have been difficult to diagnose because of low incidence and absence of specific symptoms. There are no efficient and accurate tests available for diagnosis. Capsule endoscopy is an efficient diagnostic tool for small bowel disease and obscure gastrointestinal bleeding. We diagnosed two cases of small bowel gastrointestinal stromal tumor (GIST) diagnosed by capsule endoscopy that were treated by surgery. A 68 year old male presented with abdominal pain. The capsule endoscopy showed fungating ulcer mass at the jejunum. A 55 year female presented with melena. The capsule endoscopy showed an intraluminal protruding mass with a superficial ulcer at the jejunum. Two cases were diagnosed with GIST after surgery. We report these two case diagnosed by capsule endoscopy and review the medical literature.

• Nuclear Engineering and Technology
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• 제55권8호
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• pp.2734-2741
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• 2023

Brachytherapy is a special case of radiotherapy. It should be arranged according to some principles in medical radiation applications and radiation physics. The primary principle is to use as low as reasonably achievable dose in all ionizing radiation applications for diagnostic and therapeutic treatments. Dosimetric distributions are dependent on radioactive source properties and radiation-matter interactions in an absorber medium such as phantom or tissue. In this consideration, the geometrical structure and material of the seed capsule, which surrounds a radioactive material, are directly responsible for isodose profiles and dosimetric functions. In this study, the radiometric properties of capsule material were investigated on dose distribution in a water phantom by changing its nuclear properties using the EGSnrc Monte Carlo (MC) simulation code. Effective atomic numbers of hypothetic mixtures were calculated by using different elements with several fractions for capsule material. Model 6711 brachytherapy seed was modeled by EGSnrc/Dosrcnrc Code and dosimetric functions were calculated. As a result, dosimetric parameters of hypothetic sources have been acquired in large-scale atomic number. Dosimetric deviations between the data of hypothetic seeds and the original one were analyzed. Unit dose (Gy/Particle) distributions belonging to different types of material in seed capsule have remarkably differed from the original capsule's data. Capsule type is major variable to manage the expected dose profile and isodose distribution around a seed. This study shows us systematically varied scale of material type (cross section or effective atomic number dependent) offers selective material usage in production of seed capsules for the expected isodose profile of a specific source.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2923-2926
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• 2003

In this paper, a swallowable miniaturized capsule, which applicable for electrical stimulation of digestive organ to improve the motion of intestine in research purpose, is proposed and implemented. The developed capsule can be controlled for the behavior of the power on/off, amplitude and pulse rate for the patient stimulus, by internally equipped with miniaturized RF receiver that linked by the command of external transmitter The experimental result of the implemented miniaturized capsule in the animal intestine show the ability of effective control for the stimulus parameters.

• 한국식품영양학회지
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• 제25권4호
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• pp.1027-1032
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• 2012

본 연구에서는 혈액 내에서의 오메가-3 지방산의 함량 변화를 측정하여 연질 캡슐과 장용성 캡슐의 차이를 검토하였다. Fish oil 중의 EPA와 DHA의 총합의 함량이 62.87 g/100 g으로 대부분을 차지하고 있다. 연질 캡슐의 경우, 제 1시험액(위액)에서는 내부의 지방이 70% 용출된 반면, 장용성의 경우 10% 정도만이 용출되었다. 제 2액(소장액)에서도 6시간까지 50% 정도 용출되어 90분에 50%가 용출된 일반 연질 캡슐과 대조적이었다. 기존에 사용하였던 연질 캡슐의 EPA 및 DHA는 흡수 초기에 장용성 캡슐에 비하여 다소 높은 비율을 보인 반면, 8시간 이후 장용성 캡슐 섭취한 경우 EPA와 DHA의 혈액내 함량이 비율이 증가하는 경향을 보였다. 경구 투여 48시간 후 지방산 조성은 장용성 캡슐에서는 mono-, poly-unsaturated fatty acid 혈액 내의 함량이 다소 높은 경향을 보였으며, saturated fatty acid 함량 역시 다소 높은 경향을 보였다. EPA와 DHA의 함량은 혈액 내에서 각 지방 분획에서의 함량 차이를 정확하게 측정하기 힘들었다. 이상의 결과에 의하면 장용성 캡슐은 위장관을 통과하여 장에서 용출되는 특성 때문에 지속적인 효과를 기대할 수 있을 것으로 추정된다.

• 접착 및 계면
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• 제6권1호
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• pp.11-18
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• 2005

심물질(core)이 상변화물질(Phase Change Material, PCM)이고, 벽물질(shell)이 멜라민 포름알데히드 수지인 마이크로 캡슐을 제조하였다. 제조된 캡슐의 크기가 아크릴 코팅(acrylic coating)의 물성에 미치는 영향을 알아보기 위하여 PCM 캡슐의 크기를 $3{\sim}25{\mu}m$로 조절하여 제조하였다. 제조된 캡슐의 심물질 함량과 캡슐의 크기는 DSC와 SEM을 이용하여 확인하였다. 아크릴 에멀젼은 butyl acrylate, methyl metacrylate와 acrylic acid를 공중합하여 제조하였다. 제조된 PCM 캡슐과 아크릴 에멀젼을 혼합하여 필름으로 제조하였다. 캡슐의 크기가 작을수록 아크릴 코팅 필름 내에 캡슐이 잘 분산됨을 확인할 수 있었고, 캡슐의 크기가 클수록 필름 표면이 매끄럽지 않음을 관찰할 수 있었다. 필름의 수분 흡수율은 PCM 캡슐의 크기에 큰 영향을 받지 않았지만 필름의 인장 강도와 신율은 캡슐의 크기가 작을수록 증가하였다.