• Journal of Chest Surgery
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• v.35 no.2
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• pp.161-165
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• 2002

Descending necrotizing mediastinitis is a life-threatening infection originating in the head or the neck and descends into the mediastinum. Even in the era of antibiotics, mortality rate has been reported to be 25 ∼ 40%. Prompt diagnosis and treatment is mandatory for delayed diagnosis and inappropriate drainage of the mediastinum are the main causes of high mortality Surgical management ranges from cervical drainage to routin thoracotomy:however, the optimal management still needs to be defined particularly in respect to effective mediastinal drainage. Although posterolateral thoracotomy incision has been considered as a standard approach, potential disadvantages including postoperative pain, risk of wound complication and delayed recovery remain to be concerned. Thoracoscopic approach is an attractive treatment modality as it can provide an excellent exposure with minimal incision and can complete drainage from the mediastinum and the neck in one-staged manner We describe here two cases of descending necrotizing mediastinitis successfully managed by thoracoscopic drainage.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.3
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• pp.607-612
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• 2009

For the development of ecological sound proof wall, successful seed germination and growth of plants are very important. In our present study, we observed germination of thirty five different seed species in growth chamber at $24^{\circ}C$, humidity 60% and alternation of 12 hours photoperiods. Germination of same seeds were carried out at room temperature on 6:4, 7:3, 8:2, and 9:1 proportion of pure and mineral soils respectively. Out of studied species, maximum germination was recorded for Perennial penant (92%), followed by Brassica napus (86%), and Silene armeria (82%). The measurement of root/shoot length showed, maximum root/shoot length for Perennial penant, followed by perennial sonata and Rebolsentri sp. Based on germination percentage and root/shoot length of germinating seeds, we considered Perennial penant, perennial sonata and Rebolsentri sp. were proper species for the construction of ecological sound proof walls

• Journal of the Korean Society of Radiology
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• v.84 no.6
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• pp.1266-1289
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• 2023

Malignant lymphoma typically presents with homogeneous enhancement of enlarged lymph nodes without internal necrotic or cystic changes on multiphasic CT, which can be suspected without invasive diagnostic methods. However, some subtypes of malignant lymphoma show atypical imaging features, which makes diagnosis challenging for radiologists. Moreover, there are several lymphoma-mimicking diseases in current clinical practice, including leukemia, viral infections in immunocompromised patients, and primary or metastatic cancer. The ability of diagnostic processes to distinguish malignant lymphoma from mimicking diseases is necessary to establish effective management strategies for initial radiological examinations. Therefore, this study aimed to discuss the typical and atypical imaging features of malignant lymphoma as well as mimicking diseases and discuss important diagnostic clues that can help narrow down the differential diagnosis.

• Journal of Chest Surgery
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• v.42 no.3
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• pp.355-360
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• 2009

Background: Benign teratoma is mostly asymptomatic, but this tumor rarely ruptures into the adjacent structure such as the pleural space, pericardium, lung parenchyma or tracheobronchial tree. Thus, it is important to differentiate ruptured teratoma from unruptured teratoma. This study evaluated the difference between ruptured and unruptured benign teratoma. Material and Method: Twenty-four cases of surgically resected benign teratomas were reviewed retrospectively. The clinical symptoms, chest CT findings and operative findings of the ruptured teratoma were compared with those of the unruptured teratoma. Especially, the tumor size, wall thickness, location of the mass, internal septation, homogeneity, calcification and ancillary findings were evaluated on CT. Result: Of the 24 patients, 7 patients were diagnosed with ruptured teratoma. Severe symptoms were more commonly found for ruptured teratoma than for unruptured teratoma. The ruptured teratoma had a tendency to display calcification and such ancillary findings as collapse or consolidation of the lung parenchyma. For the ruptured teratoma, the resection was performed by sternotomy or thoracotomy, and more lung resection was included. Conclusion: Calcification within the mass and changes in the lung parenchyma on the preoperative CT findings can be diagnostic signs of a ruptured teratoma. The demonstration of ruptured teratoma is important not only for making the early diagnosis, but also for the surgical planning.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.15 no.4
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• pp.176-183
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• 2010

In order to understand the temporal variations and species composition of tintinnids, at two stations of the Korea Strait, this study was carried out from January to December 2007 (n=17). Fifty-one species from 22 genera were encountered: 27 neritic species (9 genera) and 24 oceanic species (14 genera). The species composition was different between two stations, and neritic species frequently appeared at St. 1, while oceanic species more frequently appeared at St. 2. According to the frequency in appearance of species, the most dominant species were neritic species such as Stenosemella nivalis and S. pacifica, that appeared in all seasons. Also, Acanthostomella norvegica, Amphorellopsis acuta, Epilpocyloides ralumensis, Protorhabdonella curta and other many oceanic species appeared intensively during the low salinity (${\leqq}33\;psu$) and high water temperature (${\geqq}24^{\circ}C$) period (July~October). The abundance of tintinnids ranged from 0 to 1,845 cells $L^{-1}$. It was higher in the seasons (summer and autumn) of low salinity and high water temperature than in other seasons. The abundance was relatively higher at St. 1 than at St. 2. On the basis of correlation and multiple regression analyses, the tintinnid abundance was not correlated with chi-a, but significantly correlated with water temperature and salinity, suggesting to be the primary abiotic factors influencing the abundance. This study suggests that the complex hydrographic conditions of the study area might influence the temporal distribution and species composition of tintinnids.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.386-387
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• 2003

개조개(Saxidomus purpuratus)는 백합목 백합 과에 속하는 종으로 수산자원생물로서 우리나라 인근해역에서 많이 채집되어 연안어업의 중요한 소득원이 되고 있으므로 경제적으로 매우 가치가 있는 종이다. 본 종에 관한 연구를 살펴보면, 우리나라의 경우 생식세포 형성 및 산란시기 등에 관한 연구(Kim, 1969; Kim, 1971,; Chung and Kim, 1994; Chung et al., 1999)가 있고 생식세포 발달동안 난황형성과 생식주기와 성비 등에 관한 연구(Ahn, 2001; Kim et al., 2001)보고가 있다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.191-192
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• 2001

피조개, 새고막, 고막으로 대표되는 고막류는 패류 중에서도 가장 중요한 수산자원의 일군(一群)이다. 고막류는 같은 과 같은 속에 속하는 패류로서 온대 및 아열대 해역에서 많이 생산되고 있으며, 전 세계에 140여종이 알려져 있으나, 우리 나라 연안에서는 위의 3종 이외에도 10여종이 더 서식하고 있다. 피조개(scapharca broughtonii)는 우리 나라 남해안 및 동해남부에 분포하며, 고막류 가운데 가장 큰 종으로서 각장 12cm에 달한다. (중략)

• The Zoological Society Korea : Newsletter
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• v.18 no.1
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• pp.34-40
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• 2001

Perkinsus 속은 원생동물문에 속하며 현재 세계적으로 5종이 보고되고 있다. 이들은 모두 기생생물로 수산업적으로 매우 중요한 해산 패류에 막대한 피해를 입히고 있다. Perkinsus는 국내의 경우 1995년에 바지락에서 발견되었으며 일부 바지락 양식장에 있어 바지락 대량 폐사에 직, 간접적으로 영향을 미치고 있는 것으로 보고되고 있다. 국내에서 발견된 Perkinsus는 아직 정확한 분류학적 위치가 밝혀지지 않고 있으나 일본에서 발견된 종 및 유럽에서 발견된 Perkinsus atlanticus와 매우 유사한 종으로 간주된다 이 논단에서는 해산 연체동물에 기생하는 Perkinsus의 생활사, 조직병리학적 관찰, 생태적 특성 및 최근의 연구 동향 등을 보고하고자 한다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.189-190
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• 2001

대농갱이, Leiocassis ussuliertsis는 분류학상 메기목(Order Sluriformes), 동자개과 (Family Bagridae)에 속하는 종으로 전장이 50 cm에 이르는 대형 종이며 한강과 금강 등 우리 나라의 각종 하천에 서식하며 북한과 중국, 러시아에도 분포한다(In and Kim, 1990). 본 종은 매운탕으로 기호도가 높은 중요 식용어이나 근래 자연 자원의 감소와 수요의 증가로 양식의 필요성이 점차 요구되고 있다. (중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.116-118
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• 2020

자율운항선박의 성공적인 운항을 위해 항계 및 협수로 내에서의 안정적 육상 지원 서비스가 매우 중요한 역할을 한다. 본 발표에서는 자율운항선박 안전운항 지원을 위한 육상 6종 서비스의 기술 개요에 대해 설명하고자 한다.