• Journal of Korean Neurosurgical Society
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• 제55권3호
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• pp.173-177
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• 2014

Neurocysticercosis is the commonest parasitic disease of the human central nervous system. The incidence of intra ventricular form of neurocysticercosis (NCC) is less common accounting 10-20% that of total central nerve system cysticercosis. Intra ventricular NCC is complicated due, to its high incidence of acute hydrocephalus caused by ball valve mechanism. The only reliable tool for diagnosis of NCC is by neuroimaging with CT or MRI. MRI preferred over CT because of its high specificity and sensitivity. In emergency situations like acute hydrocephalus one can proceed with emergency endoscopic surgery. Through the endoscopic view, intra ventricular NCC (IVNCC) has distinguished morphological features like the full moon sign. This feature not only helps in identification of IVNCC, but also guides in further endoscopic treatment strategy. Authors report two cases of 3rd ventricular NCC with acute hydrocephalus managed with emergency endoscopy. Authors have discussed the clinical features, intra operative endoscopic findings and role of endoscopy in emergency surgery for NCC with acute hydrocephalus.

• Fisheries and Aquatic Sciences
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• 제21권11호
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• pp.31.1-31.7
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• 2018

Three economic marine algae that have been used as food and carrageenan sources were collected from Korea during a survey of marine algal flora. They share the generic features of Hypnea, and three major clades supported by the sectional features were confirmed in a phylogenetic tree based on rbcL sequences. The first species, which belongs to a species group corresponding to the sect. Spinuligerae, nests in the same clade with Hypnea yamadae in a genetic distance of 0%. It is morphologically characterized by an entangled base, subcompressed or subterete to terete axes, somewhat percurrent main axis, irregularly alternately branching with wide angle, and rarely hooked spinous branchlets. The second one is also referred to the sect. Spinuligerae and formed the same clade as Hypnea cenomyce. The genetic distance between both sequences was calculated as 0.0-0.1%, which is considered to be intraspecific. This species is distinct by somewhat entangled thallus at the basal part, percurrent axis, short spine-like branchlets densely covering the axis, and medullary lenticular thickenings. The third alga, which forms a species group corresponding to the sect. Pulvinatae, nests in the same clade as Hypnea nidulans (no intraspecific divergence). It shows occasionally epiphytic habitat rather than epilithic habitat of low mat-forming growth and percurrent erect main axes with dense lateral branchlets. Based on these morphological and molecular data, the three Korean species are identified as H. yamadae, H. cenomyce, and H. nidulans. This is the first record of the Hypnea species in Korea.

• 대한의용생체공학회:의공학회지
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• 제44권3호
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• pp.176-181
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• 2023

During cancer treatment, the patient's response to drugs appears differently at the cellular level. In this paper, an image-based cell phenotypic feature quantification and key feature selection method are presented to predict the response of patient-derived cancer cells to a specific drug. In order to analyze the viability characteristics of cancer cells, high-definition microscope images in which cell nuclei are fluorescently stained are used, and individual-level cell analysis is performed. To this end, first, image stitching is performed for analysis of the same environment in units of the well plates, and uneven brightness due to the effects of illumination is adjusted based on the histogram. In order to automatically segment only the cell nucleus region, which is the region of interest, from the improved image, a superpixel-based segmentation technique is applied using the fluorescence expression level and morphological information. After extracting 242 types of features from the image through the segmented cell region information, only the features related to cell viability are selected through the ReliefF algorithm. The proposed method can be applied to cell image-based phenotypic screening to determine a patient's response to a drug.

• 한국균학회지
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• 제51권4호
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• pp.491-504
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• 2023

To explore fungal diversity in orchard soil where fire-blighted apple trees are buried, we collected soil samples from apple orchards in Chungju, Korea. Fungal isolates were obtained from DG18 agar and identified at the species level based on morphological features and phylogenetic analyses. The colony characteristics and microstructures were examined using a light microscope and a scanning electron microscope after culturing on potato dextrose agar (PDA), malt extract agar (MEA), Czapek yeast agar (CYA), and oatmeal agar (OA) The PCR-amplified products of the ITS1-5.8S-ITS2 region and 28S large subunit of the nuclear ribosomal RNA gene, as well as partial sequences of the β-tubulin, calmodulin, and translation elongation factor 1-α genes were sequenced and analyzed phylogenetically. Seven previously unknown fungal species were explored in Korea. All samples, including Aspergillus aureolatus, Botryotrichum atrogriseum, Dactylonectria novozelandica, Fusarium denticulatum, Paecilomyces tabacinus, Sarcopodium tibetense and Talaromyces stollii, had ascomycetes. Herein, we report their descriptions and features.

• 한국동물위생학회지
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• 제32권4호
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• pp.391-397
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• 2009

Eurasian eagle owl (Bubo bubo kiautschensis) is a natural monument (No. 324) and is also classified as an endangered wildlife grade II the Ministry of Environment of Korea. Eurasian eagle owl is threatened by the human being. But the efficient rescue and treatment for Eurasian eagle owl are still problematic, due to lack of basic data. In this study, to obtain basic resources for establishing more efficient rescue system, we held a physical examination and measured size physical part. In addition, we analyzed blood sample and feces samples and autopsy. We conduct the physical examination with measuring tapes and scales for 16 live features and 11 dead features. After inhalation anesthesia take the blood samples from wing vein. Blood samples are analyzed in hematologic and chemistric methods. We collected the feces through individual floor of cages from 12 live features and conducted the feces analysis. Autopsy was conducted for 11 dead samples. In physical examination, the mean body weight and total length of live features was 2.26${\pm}$0.35kg, 61${\pm}$2.38cm, the mean body weight and total length of dead features was 1.57${\pm}$0.51kg, 59.31${\pm}$3.51cm. Mean PCV was 46.57${\pm}$4.97%, while mean TPP was 3.49${\pm}$0.57g/dL. In feces sample analysis, 9 of 12 owls(75%) were infested by gastrointestinal helminths. The infection rates were: Trematoda (41.7%), Capilaria sp.(66.7%), acanthocephalans (25%). In autopsy, we confirmed 11 features were infested by duplicated infection of more than 2 helminths. Result of this study will be used for establishing reference range for physical features, blood analysis in Eurasian eagle owl. Therefore, to obtain basic resources for establishing more efficient rescue system, we have to make long-term conservation plans for Eurasian eagle owl.

• 한국식품저장유통학회지
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• 제23권5호
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• pp.711-717
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• 2016

본 연구에서는 우리나라에서 재배되고 있는 손바닥선인장인 백년초(Opuntia ficus-indica var. saboten)와 천년초(Opuntia humifusa) 열매의 외관 및 성분을 비교하였다. 시료 간 외형을 장축, 단축, 중량의 항목으로 구분하여 측정, 비교하였으며, 색도를 측정하여 외관을 비교하였다. 크기와 무게는 천년초 열매가 백년초 열매에 비해 작았으나, 단축 대비 장축의 비가 백년초 열매는 1.63, 천년초 열매는 1.90으로 천년초 열매가 백년초 열매에 비해 크기가 작은 대신 좀 더 길쭉한 모양을 가지는 것을 확인하였다. 색도의 경우 L값과 b값은 천년초 열매가, a값은 백년초 열매가 높았는데, 열매시료간의 ${\Delta}E$값은 19.80으로 나타나 색도 차이가 크게 나타나는 것으로 나타났다. 일반성분의 함량은 백년초 열매가 탄수화물 함량이 높은 반면 조회분 함량은 천년초 열매가 높게 나타났으며, 조단백질 함량과 조지방 함량은 유사하게 나타났다. 식이섬유 함량은 백년초와 천년초 열매 모두 유사한 수준으로 높은 함량(52.7~53.4%)을 가지고 있는 것으로 나타났는데, 식이섬유 함량이 높다고 알려진 알로에와 해조류보다도 높은 수준으로 나타났다. 무기질 함량은 두 시료에서 K과 Ca순으로 높게 나타났는데, 한국인이 주로 섭취하는 과일의 K과 Ca함량에 비해 높은 함유량을 나타내었고, Ca이 많이 함유되어 있다고 보고된 멸치와 비슷한 Ca함량을 나타내었다. 구성아미노산의 함량은 전체 합이 천년초 열매가 백년초 열매에 비해 높았으나 필수 아미노산의 비율은 백년초 열매가 천년초 열매에 비해 소폭 높았고, 모든 시료에서 glutamic acid의 함량이 가장 높은 특징을 보였다. 유리 아미노산의 경우 시료별 특성이 달랐는데, 백년초 열매의 경우 tyrosine의 함량이 높고 천년초 열매에 존재하지 않는 taurine이 존재한 반면, 천년초 열매의 경우 glutamic acid의 함량이 압도적으로 높은 것을 확인할 수 있었으며, 모든 시료에서 GABA가 검출되었다. 본 연구결과 백년초와 천년초 열매가 외관특성 및 성분에 차이를 보이는 것을 확인할 수 있었는데, 손바닥선인장 열매의 가공제품 개발 시 종에 따른 외관과 성분함량 차이를 고려할 필요가 있을 것으로 판단되었고 특히 손바닥선인장 열매의 경우 식이섬유와 Ca의 함량의 높아 이를 이용한 기능성식품의 제조에 이용될 수 있을 것으로 사료되었다.

• 대한세포병리학회지
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• 제15권1호
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• pp.60-64
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• 2004

The macrofollicular variant of papillary thyroid carcinoma (MVPC) is characterized by macrofollicles occupying more than half of the tumor and demonstrating nuclear features of classic papillary carcinoma. It is difficult to recognize on fine needle aspiration (FNA) cytology due to the paucity of aspirated neoplastic cell clusters, especially when the tumor is associated with extensive areas of hemorrhage. Case: A 34-year-old female presented with a well-demarcated nodule in the thyroid gland, diagnosed as a benign nodule on ultrasonography and computed tomography. FNA cytology smear revealed a few small aggregates of follicular cells with morphological features suspicious for papillary carcinoma, set in a background of hemorrhage, inflammatory cells, and hemosiderin-laden macrophages. Intraoperative frozen section revealed macrofollicular nests filled with hemorrhage and composed of follicular cells demonstrating nuclear clearing and grooves. Conclusion: MVPC is a rare but distinctive variant of papillary carcinoma, which is easily mistaken for adenomatous goiter or benign macrofollicular neoplasm on radiologic findings. The cytopathologist should alert oneself on encountering benign radiologic findings and any smear composed of scant numbers of follicular cells with nuclear features suspicious for papillary carcinoma despite the bland-looking background of hemorrhage and hemosiderin-laden macrophages, and recommend intraoperative frozen sections for a definite diagnosis.

• 대한본초학회지
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• 제30권4호
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• pp.65-69
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• 2015

Objectives : The root ofCyanchum wifordii(CW) had been used as herbal medicine, 'Baeksuo', in Korea. However, the root ofCynanchum auriculatum(CA) had also been mis-used as 'Baeksuo' in herbal markets, due to its morphological similarity with CW. This study aimed to compare discriminative features and establish the identification-keys between two herbal medicines using microscopic methods.Methods : Microscopic preparations including fixation, rapid dehydration, paraffin infiltration, paraffin embedding, sectioning, mounting, and staining, were performed and the microscopic features between CW and CA samples were compared.Results : The starch grain of parenchymal cells, the amounts of calcium oxalate crystals, cell sizes, and the shape of phloem were not different between CW and CA samples. However, the clusters of stone cells which were conglomerated at outer cortex were apparently observed in CA sample (4~8 layers of stone cells), but not in CW sample (2~4 layers of stone cells, or not). Xylem of CW consisted of several vessels and fiber bundles which were formed as linear shapes and discontinuous radial lines, while that of CA, in which radial lines was not observed, were shaped as a wedge and scattered near cambium with comparatively few fiber bundles enclosed vessels. Especially, in the xylem of CA, fiber bundles located towards cambium were relatively more developed than those located outward cambium.Conclusions : The identification-keys established in this study would be helpful to discriminate microscopic features between CW and CA.

• 한국의상디자인학회지
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• 제22권3호
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• pp.1-17
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• 2020

The Peking Opera is one of the most representative cultural aspects of China. It includes China's traditional specialties, such as stage performance, stage background, and costumes. The purpose of this study is to investigate the characters and the costume characteristics of the Peking Opera to present fashion design. This research is meaningful for spreading the Peking Opera to the world by applying China's traditional costumes to fashion design. Based on the cultural background of the Peking Opera and the analysis of the opera costume, four sets of women's clothes were made by using the traditional Chinese elements. The conclusions are as follows. First, traditional features such as patterns, colors, and styles from Peking Opera costumes were used in fashion design. The colors and patterns use Chinese traditional aesthetics to carry out contemporary fashion design and apply creative materials. Second, the neoprene used to create the items is a material suitable for the modern design of the traditional Peking Opera costumes. Neoprene has good elasticity and can be cut and sewn in a variety of ways. It can also satisfy the three-dimensional atmosphere and rich morphological changes found in Peking Opera costumes. In addition, a combination of thin chiffon and mesh materials is also suitable for the development of modern designs. Finally, in order to show the effects of traditional works, the patterns were finished by hand-painting. The hand-painted works were then scanned and printed on the material by the digital printing techniques. At the conclusion, the traditional features and feelings of the contemporary designs were presented.

• 대한전자공학회논문지SP
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• 제41권6호
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• pp.121-126
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• 2004

본 논문에서는 단일 문맥자유 주목 연산자 (context-free attention operator)만을 계층적으로 적용하여 복잡배경의 인물 영상으로부터 여러 얼굴을 효과적으로 동시 검출하는 알고리즘을 제안하였다. 입력 영상을 피라미드 구조로 변환하고, 잡음에 강건한 주목 연산자를 전역적으로 적용하여 먼저 고속으로 얼굴이 존재할 후보영역들을 찾고, 다시 이 영역들에 국한하여 지역적인 주목 연산자를 적용하여 얼굴이 갖는 특징을 확인함으로써 얼굴임을 검증하였다. 복잡 배경 속에 여러 얼굴을 포함하는 여러 가지 인물 영상 데이터베이스에 대해 제안한 알고리즘을 적용한 결과 93.5%의 검출율을 얻을 수 있었다.