• Korean Journal of Environmental Biology
• /
• v.35 no.3
• /
• pp.227-239
• /
• 2017

To find unrecorded diatom species in the Nakdong River Estuary and Yeongil Bay, bottom sediments in the estuary, and seagrasses in the bay were collected from 12 sampling sites. Eighteen species and four genera are added to the national flora of diatom as newly recorded one. In the Nakdong River Estuary, twelve species are new records to Korea, Martyana atomus (Hustedt) Snoeijs, Pseudostaurosira perminuta (Grunow) Sabbe & Vyverman, Trachysphenia acuminata M. Peragallo, Trachysphenia australis Petit, Fallacia clipeiformis ($K{\ddot{o}}nig$) D.G. Mann, Amphora graeffeana Hendey, Amphora jostesorum Witkowski, Metzeltin & Lange-Bertalot, Amphora ostrearia var. vitrea (Cleve) Cleve, Amphora wisei (Salah) Simonsen, Halamphora eunotia (Cleve) Levkov, Halamphora lineata (Gregory) Levkov, Nitzschia littorea Grunow. In Yeongil Bay, four species are added as new, Licmophora gracilis var. anglica ($K{\ddot{u}}tzing$) H. Peragallo & M. Peragallo, Tabularia investiens (W. Smith) Williams & Round, Nitzschia composita Giffen, Nagumoea neritica Witkowski & Kociolek. Two species occurred simultaneously in both regions, Fragilaria cassubica Witkowski & Lange-Bertalot and Hyalinella lateripunctata Witkowski et al.

• The Korean Journal of Cytopathology
• /
• v.8 no.1
• /
• pp.98-102
• /
• 1997

Sinonasal undifferentiated carcinoma(SNUC) is a distinct, relatively rare neoplasm arising in the nasal cavity and paranasal sinuses composed of undifferentiated epithelial cells and clinically characterized by a fulminant course. We report a case of SNUC in a 56-year old man who have had bilateral neck masses since one month ago before coming to our hospital. The paranasal computed tomography showed soft mass density in the left maxillary sinus and the nasal cavity with bone destruction in the anterior medial and the inferior maxillary sinus wall. This mass was extruded into the left orbital wall. Biopsy of the nasal mass and fine needle aspiration(FNA) of the neck mass were done. FNA revealed medium-sized neoplastic cells forming clusters or individually dispersed. Nuclei were round to oval, slightly to moderately pleomorphic, and hyperchromatic. Chromatin was finely granular, but occasionally was coarsely granular. Nucleoli varied from large to inconspicuous and the cytoplasm was scanty.

• Proceedings of the KIPE Conference
• /
• 2003.07a
• /
• pp.137-140
• /
• 2003

Shorted-turns can have significant effects on a generator and its performance. Shorted-turn sensor for synchronous generator's field winding have been developed. One of effective method detecting inter-turn short circuits on round rotor winding is a method using sensor detecting. But the method needs duplicate design of sensor for characteristic change according to types and forms of generator Thus sensing skill without sensor depend on change of electric property in generator. For the reason, this paper presents shorted-turns phenomenon and the characteristic analysis of shorted-turns In synchronous generator by using 2-D finite element method(FEM).

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.22 no.3
• /
• pp.545-553
• /
• 1998

Recently a new process known as the magnetic fluid grinding has been developed, which can remove material from the surface of ceramic balls by fifty to one hundred times more rapidly than the conventional lapping process. In this study, the ceramic balls with various compositions are made and ground by using the magnetic fluid grinding technique with various machining parameters. In order to make well-round shaped balls by using the magnetic fluid grinding technique, the fundamental research to find out the machining factors has been carried out. Developing an equipment with higher efficiency and reliability in the machining could certainly lead to the higher productivity with excellent quality of ceramic balls.

• The Research Journal of the Costume Culture
• /
• v.7 no.3
• /
• pp.17-21
• /
• 1999

The purpose of this study was to trace and identify the word, ho-su(好袖), appeared in Sejosillok(世祖實錄). The results of this research can be summerized as follow : the word, ho-su(好袖) was one of the names of sleeves of so-o-sa(小 子). The ho-su(好袖)is a kind of round sleeves with small wrists. The ho-su(好袖) was a synomym of hak-su(鶴袖). The word, ho-su(好袖)is Korean transliteration of ho-su(好袖). Although the first characters of ho-su(好袖) and ho-su(胡袖) are different from each other in Korean, the sounds and the meanings of these two words are the same. Ho-su(好袖), ho-su(胡袖), and hak-su 鶴袖are synonyms.

• Journal of the Korean Home Economics Association
• /
• v.42 no.6
• /
• pp.103-110
• /
• 2004

Among accessaries, headwear is important to protect one's face and head from the sun, wind and cold. This study was performed to provide fundamental data on college female students' head shape by classifying their head shapes and by analyzing the characteristics of each head shape in order to improve the fitness of headwear. The subjects were 193 Korean college female students. The subjects were directly measured anthropometrically and indirectly analyzed photo-graphically. By direct and indirect measurement, 5 factors were extracted through factor analysis and those factors comprised 76.34% of the total variance. 3 clusters as their head shape were categorized using 5 factor scores by cluster analysis. Type 1 was characterized by long head type and having smallest head thickness and head girth. Type 2 had average size and the most round-head type. Type 3 was characterized by short head type and the largest head thickness and head girth.

• Journal of the Korean Society of Costume
• /
• v.50 no.5
• /
• pp.41-52
• /
• 2000

During the 3C(B.C.) and 2C(A.D.), there were large influx of variety of arts to Jin and Han dynasty such as music, dancing, and at performing from neighboring countries. It made a tremendous impact on the development of dancing an in Han dynasty. On the other hand, Kokurye people had also enjoyed their own singing and dancing culture (styles) for a long time. Han and Kokurye's dancing costumes were studied based on artifacts (data) such as wall paintings, clay doll, and other small paintings all from tombs in Han and Kokurye. A similarity was found between two dynasties' dancing costume, since both had tong sleeve dresses. However, the further detailed study showed that one can't simply say both are in the same style. For example, the dress in Han dynasty had a long length style of coat(深衣) covering all the way to feet, and there were round neckline coat(團領) and long Jacket(장유). In contrast, that of Kokurye had a shorter length in coat(直領) covering only up to calf of the leg or long jacket(장유).

• Journal of Mechanical Science and Technology
• /
• v.14 no.9
• /
• pp.978-984
• /
• 2000

The aim of this study is to investigate the ductile fracture behaviour under Mode I loading using SA533B pressure vessel steel. Experiments consist of the Round Notch Bar Test (RNB), Single Edge Crack Bending Test (SECB), and V-Notch Bar Test (VNB). Results from the RNB test were used to tune the damage modelling constant. The other tests were performed to acquire the J-resistance curves and to confirm the damage constants. Microstructural observation includes the measurement of crack profile to obtain the roughness parameter. Finally, simulation using Rousellier Ductile Damage Theory (RDDT) was carried out with 4-node quadrilateral element ($L_c=0.25\;mm$). For the crack advance, the failed element removal technique was adopted with a ${\beta}$ criterion. In conclusion, the predicted simulation using RDDT showed a good agreement with the experimental results. A trial using a roughness parameter was made for a new evaluation of J-resistance curve, which is more conservative than the conventional one.

• Tribology and Lubricants
• /
• v.20 no.4
• /
• pp.183-189
• /
• 2004

The floating ring seal is used in an oxidizer and a fuel pump of the turbo pump unit in the liquid rocket engine to optimize a leakage without rubbing phenomenon. The damper floating ring seal, one of the floating ring seals, is with round hole pattern surfaces. It can reduce the leakage by increased friction factor that obtained from experimental data. In this paper, the leakage test about floating ring seal and damper floating ring seal was conducted. The test result showed the leakage performance of damper floating ring seal was better than the leakage performance of floating ring seal. With the leakage test the lock-up and rotation test about seal was conducted and that position is measured. The relatively large lock-up eccentric ratio was obtained from the test result of damping floating ring seal. The attitude angle of seal increases with increasing of shaft rotation.

• Journal of Chest Surgery
• /
• v.28 no.11
• /
• pp.1058-1062
• /
• 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.