• 천문학회보
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• 제38권2호
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• pp.67.2-67.2
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• 2013

Part of mid-J CO emission detected by the Herschel/PACS observations of embedded young stellar objects (YSOs) has been attributed to the UV-heated outflow walls. We have applied our newly developed self-consistent models of Photon Dominated Region (PDR) and Non-LTE line Radiative transfer In general Grid (RIG) to the Herschel FIR CO observations. If the black body radiation of T = 15,000 K is used, the observed mid-J CO line fluxes can be produced in inner dense regions (n ${\geq}$ 106 cm-3) with -4.5 ${\leq}$ log Gdust/n ${\leq}$ -2.5, where gas temperatures are larger than 300 K and CO abundances are ${\geq}$ 10-5, along the UV-heated outflow walls. The contribution of the UV heated outflow cavity wall in Class I seems to be larger than that in Class 0.

• 대한세포병리학회지
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• 제12권2호
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• pp.117-120
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• 2001

Inflammatory myofibroblastic tumor, histologically characterized by the presence of bland-locking spindle cells and infiltration of chronic inflammatory cells, is extremely rare in the gastric wall. We report a case of gastric inflammatory myofibroblastic tumor In a 27-month-old boy. The fine needle aspiration biopsy from the mass showed loose clusters or scattered spindle cells and inflammatory cells, predominantly of lymphocytes and plasma cells. The spindle cells resembled fibroblasts or myofibroblasts. Differential diagnosis from benign and malignant diseases involving abdominal cavity was discussed.

• 대한기계학회논문집B
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• 제23권8호
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• pp.987-996
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• 1999

An algorithm for modeling the filling of metal into a mold and solidification has been developed. This algorithm uses the implicit VOF method for a filling and a general implicit source-based method for solidification. The model for simultaneous filling and solidification is applied to the two-dimensional filling and solidification of a square cavity. The effects of the wall temperature and gate position on the solidification are examined. The mixed natural convection flow and residual flow resulting from the completion of a filling are included in this study to investigate the coupled effects of the filling and natural convection on solidification. Two different filling configurations (assisting flow and opposite flow due to the gate position) are analysed to study the effects of residual flow on solidification. The results clearly show the necessity to carry out a coupled filling and solidification analysis including the effect of natural convection.

• 대한수의학회지
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• 제48권4호
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• pp.501-503
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• 2008

An adult one-year-old male Eurasian beaver (Castor fiber) died of a traumatic injury to its right leg from a fall. At necropsy, fibrinopurulent exudates were observed in the thoracic cavity. Histopathologic examination showed that the pericardium, thoracic wall, pulmonary pleura and the lungs were markedly thickened due to mixtures of necrotic cellular debris, neutrophils, fibrin, red blood cells, and bacterial aggregates. Pure culture of Klebsiella (K.) pneumoniae was isolated from the thoracic exudates, pleura and heart tissues. Based on these findings, this is the first report describing pleuritis and pericarditis associated to K. pneumoniae in a beaver.

• Journal of Chest Surgery
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• 제28권11호
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• pp.1058-1062
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• 1995

We have experienced one case of hemoptysis which developed from both upper lung fields due to pulmonary aspergilloma combined with pulmonary tuberculosis. A 48 year old female patient was admitted with 10 years history of recurrent hemoptysis. Chest X-ray film revealed moderately advanced active pulmonary tuberculosis lesion on both upper lung fields, and cresentic radiolucent space between cavity wall and round radiopaque lesion on left upper lung field. Bronchial arteriogram showed hypervascularity and extravasation of contrast media in the right lung and it was treated by bronchial artery embolization. Hemoptysis recurred 7 months after embolization and repeat examination revealed greatly increased bronchial vasculature in the left upper lobe and therefore underwent left upper lobectomy. The pathologic result was compatible with aspergillosis, and the postoperative recovery was uneventful.

• Journal of Chest Surgery
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• 제28권9호
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• pp.869-871
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• 1995

Esophageal duplication cysts are uncommon, benign lesions of the esophagus. They are rare congenital foregut anomalies. To be considered an esophageal duplication cyst, a lesion must meet the following criteria:1 the cyst in the esophageal wall 2 the cyst is covered with a muscularis propria,generally of two layers and 3 the cyst has an epithelial lining consistent with that of the 4 week embryo, which may be columnar or pseudostratified columnar, and may be ciliated. Herein we report a case of an esophageal cyst located within the thoracic cavity, which is, to the best of our knowledge, the first case reported in Korea. Surgery is generally the treatment of choice for esophageal cyst, and was indicated in this case for the diagnosis and management of symptoms attributable to the cyst.

• Journal of Chest Surgery
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• 제18권3호
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• pp.529-533
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• 1985

Though esophageal cancer was not a common disease, early metastasis and direct extension to adjacent organ were important on the treatment of disease. Therefore, palliative operation was often useful in advanced esophageal cancer. Between June 1985 through July 1985, we treated three cases of inoperable esophageal cancer with Celestin`s endo-esophageal tube by esophageal intubation. Three operations were done under general anesthesia. Celestin`s tube were inserted via oral cavity and additional traction on stomach were applied. After complete insertion of tube was done, the distal end of Celestin`s tube was modified in length. Also stay suture was applied between tube and stomach wall was applied. Postoperative esophagogram revealed good esophageal patency through Celestin`s tube. Clinically, swallowing difficulty was much improved after operation.

• 한국가시화정보학회지
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• 제1권2호
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• pp.52-57
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• 2003

The present paper investigated the effect of ultrasonic vibrations on the melting process of a phase-change material (PCM). The melting process in the square cavity with a heated vertical wall has been studied in terms of acoustic streaming. In the present study, applying with ultrasonic vibrations to the liquid were found to induce acoustic streaming which was clearly observed using by a particle image velocimetry (PIV) and a thermal infrared camera. The experimental results revealed that acoustic streaming could accelerate the melting process as much as 2.5 times, compared to the rate of natural melting (i. e., the melting without acoustic streaming). In addition, temperature and Nusselt numbers over time provided conclusive evidence of the important role of the acoustic streaming on the melting phenomena of the PCM.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2001년도 추계 학술대회논문집
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• pp.138-143
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• 2001

An experimental model to enhance the mixing of parallel supersonic-subsonic jet ($M_1$=1.78 and $M_2$=0.30) is simulated with a numerical technique by modeling the wall-mounted cavity to a boundary condition of oscillating pressure. The computed pilot pressure distributions along three representative cross sections show a good agreement with the equivalent experimental data. The irradiation of acoustic wave in the ultrasonic range causes the mixing augmentation of jet and wake due to the transfer of vibration energy between fluid particles.

• 대한기계학회논문집
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• 제19권1호
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• pp.193-201
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• 1995

The role of thermal contact resistance between a casting and a metal mold as well as natural convection in the melt during solidification of a pure metal is numerically studied. Numerical simulation is performed for a rectangular cavity using the coordinate transformation by boundary-fitted coordinate and pure aluminum is used as the phase- change material. The influences of thermal contact resistance on the interface shape and position, solidified volume fraction, temperature field and local heat transfer are investigated.