• Title/Summary/Keyword: Morphological Features

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Studies on the Development of Antihypertensive Agents from Korean Crude Drugs(I) -Morphological Comparisons of Korean and Chinese Barks of Eucommia ulmoides and of Euonymus japonicus in Korea and Euonymus pellucidifolia in Taiwan- (혈압강하제 국산 자원생약의 개발에 관한 연구(I) -한국산 두충과 원두충, 화두충과 대두충의 형태학적 비교-)

  • Chung, Myung-Hyun;Park, Chung-Wan
    • Korean Journal of Pharmacognosy
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    • v.6 no.1
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    • pp.29-34
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    • 1975
  • Morphological characteristics of the Eucommia barks produced in Korea and China and of the barks of Euonymus japonicus $T_{HUMBERGI}$ in Korea and Euonymus pellucidifolia $H_{AGATA}$ in Taiwan were compared. The similarity in morphological features between Eucommiae Cortex produced in Korea and that of China suggests that both plants are of same botanical origin. However, the size of tissues and cells indicates that there is only one difference due to warm climatic environment. The similarity and difference of the barks of Euonymus japonicus produced in Korea and Euonymus pellucidifolia produced in Taiwan comfirmed that the two plants belong to the same genus and that they are different species.

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First Record of Indo-West Pacific Spider Crab, Naxioides robillardi (Decapoda: Epialtidae) from Korean Waters

  • Lee, Sang-Hui;Jung, Jibom;Park, Taeseo
    • Animal Systematics, Evolution and Diversity
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    • v.36 no.4
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    • pp.400-407
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    • 2020
  • An epialtid spider crab, Naxioides robillardi (Miers, 1882), is known as widely distributed in Indo-West Pacific region include Japanese waters. Four specimens of epialtid crabs were collected from adjacent waters of Jejudo Island and identified as N. robillardi. This species can be grouped into two forms such as N. robillardi form typical and N. robillardi form mammillata according to morphological features of carapace, gastric spine, and chela. Morphological characters of all Korean specimens well agree with the form mammillata in general. In this paper, morphological diagnosis and illustrations of newly collected N. robillardi are provided. DNA barcode sequence of COI region is also determined for the first time.

A Novel Acremonium Species Isolated from Air Samples in Korea

  • Jung-Min Lee;Jae-Eui Cha;Young-Sil Yoon;Ahn-Heum Eom
    • Mycobiology
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    • v.51 no.4
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    • pp.210-215
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    • 2023
  • The aim of this study was to characterize a new fungal species, Acremonium conglutinatum, isolated from air samples collected in Wando, South Korea. Phylogenetic analysis based on the internal transcribed spacer and large subunit regions revealed its unique position within the genus Acremonium. The isolated strain displayed distinct morphological characteristics, including ellipsoid or bent-ellipsoid conidia formed in clusters on the phialides. These features differentiate the new species from closely related species within the genus. This study describes the morphological and molecular characteristics of A. conglutinatum and emphasizes its phylogenetic relationships with other Acremonium spp. The identification of this novel species contributes to our understanding of the diversity and ecological role of Acremonium.

A Study on Facial Feature' Morphological Information Extraction and Classification for Avatar Generation (아바타 생성을 위한 이목구비 모양 특징정보 추출 및 분류에 관한 연구)

  • 박연출
    • Journal of the Korea Computer Industry Society
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    • v.4 no.10
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    • pp.631-642
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    • 2003
  • We propose an approach to extract and to classify facial features into some classes from one's photo as prepared classification standards to generate one's avatar. Facial Feature Extraction and Classification was executed at eyes, nose, lips, jaw separately and I presented each facial features and classification standards. Extracted Facial Features are used for calculation to features of professional designer's facial component images. Then, most similar facial component images are mapped onto avatar's vector face.

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Terminal Myelocystocele : Pathoembryogenesis and Clinical Features

  • Lee, Ji Yeoun;Kim, Kyung Hyun;Wang, Kyu-Chang
    • Journal of Korean Neurosurgical Society
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    • v.63 no.3
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    • pp.321-326
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    • 2020
  • There has been confusion in the classification of terminal myelocystocele (TMCC) due to its diverse morphology and vague pathoembryogenesis. TMCC could be summarized as having the essential features of an elongated caudal spinal cord extruding out of the dorsal extraspinal space that fuses with the subcutaneous fat, which is in the shape of a trumpet-shaped cerebrospinal fluid-filled cyst. The extraspinal portion of the extruded spinal cord is nonfunctional. The morphological features suggest that TMCC is formed during secondary neurulation, specifically the failure of the degeneration of the secondary neural tube near the time of the terminal balloon. This review discusses the definition, as well as the clinical and surgical features, of TMCC with special emphasis on its pathoembryogenesis.

Anatomical Features of Agarwoods' Xylem (침향(沈香)의 목부조직(木部組織))

  • Park, Sang-Jin;Kim, In-Rak
    • The Korea Journal of Herbology
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    • v.20 no.3
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    • pp.9-18
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    • 2005
  • Objectives : The purpose of this study is to investigate characteristics of cell morphology of two different agar woods (Aquilaria agallocha Roxburgh (AAR) and imitative agar wood (IAW)) using microscopic techniques. Methods : Both light and scanning electron microscopes were used to observe morphological and histological features of the cell of agar woods collected from commercial products in the market. Results : The cell morphology and tissue arrangements of AAR depending on either the adsorption of resin into vessels or no adsorption of resin were observed to compare these features with those of both IAW and Aquilaria sinensis Gilb (ASG). Conclusions : As a result, the vessels of AAR with the resin adsorption was packed with lots of yellow-brownish materials, which were quite different from those of IAW and ASG. The cell walls were thick, and had well-developed traumatic parenchyma tissues with squared cells of the same height and width, which appeared as a clump of small grains packed.

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Computed Tomographic Features of Canine Ovarian Masses

  • Hong, Sae-Byel;Choi, Ho-Jung;Lee, Young-Won
    • Journal of Veterinary Clinics
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    • v.39 no.3
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    • pp.107-113
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    • 2022
  • This paper describes the computed tomographic features of ovarian masses in dogs. The CT images of female dogs with a confirmed histological diagnosis of ovarian tumors or ovarian cystic diseases were studied retrospectively. Seven dogs met the inclusion criteria. The morphological features of ovarian tumors and ovarian cystic diseases coincided to a certain degree, but ovarian tumors tended to be predominantly solid. Objective measurements of Hounsfield units (HU) suggest that benign lesions may show lower HU values than malignant tumors and mild contrast enhancement because of the small soft tissue composition. CT is useful for a differential diagnosis of ovarian masses by providing additional information on the imaging features of the masses and an evaluation of metastases.

A Computer Vision-based Method for Detecting Rear Vehicles at Night (컴퓨터비전 기반의 야간 후방 차량 탐지 방법)

  • 노광현;문순환;한민홍
    • Journal of the Institute of Convergence Signal Processing
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    • v.5 no.3
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    • pp.181-189
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    • 2004
  • This paper describes the method for detecting vehicles in the rear and rear-side at night by using headlight features. A headlight is the outstanding feature that can be used to discriminate a vehicle from a dark background. In the segmentation process, a night image is transformed to a binary image that consists of black background and white regions by gray-level thresholding, and noise in the binary image is eliminated by a morphological operation. In the feature extraction process, the geometric features and moment invariant features of a headlight are defined, and they are measured in each segmented region. Regions that are not appropriate to a headlight are filtered by using geometric feature measurement. In region classification, a pair of headlights is detected by using relational features based on the symmetry of a pair of headlights. Experimental results show that this method is very applicable to an approaching vehicle detection system at nighttime.

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Functional Expansion of Morphological Analyzer Based on Longest Phrase Matching For Efficient Korean Parsing (효율적인 한국어 파싱을 위한 최장일치 기반의 형태소 분석기 기능 확장)

  • Lee, Hyeon-yoeng;Lee, Jong-seok;Kang, Byeong-do;Yang, Seung-weon
    • Journal of Digital Contents Society
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    • v.17 no.3
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    • pp.203-210
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    • 2016
  • Korean is free of omission of sentence elements and modifying scope, so managing it on morphological analyzer is better than parser. In this paper, we propose functional expansion methods of the morphological analyzer to ease the burden of parsing. This method is a longest phrase matching method. When the series of several morpheme have one syntax category by processing of Unknown-words, Compound verbs, Compound nouns, Numbers and Symbols, our method combines them into a syntactic unit. And then, it is to treat by giving them a semantic features as syntax unit. The proposed morphological analysis method removes unnecessary morphological ambiguities and deceases results of morphological analysis, so improves accuracy of tagger and parser. By empirical results, we found that our method deceases 73.4% of Parsing tree and 52.4% of parsing time on average.

Relationship Between Fractal Dimension and Morphological Features of Cephalosporium acremonium M25 in a 30-1 Bioreactor Culture

  • Lim Jung-Soo;Kim Jung-Mo;Kim Jong-Chae;Kim Chang-Ho;Yang Dae-Ryook;Chang Hyo-Ihl;Kim Seung-Wook
    • Journal of Microbiology and Biotechnology
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    • v.15 no.5
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    • pp.971-976
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    • 2005
  • In a 30-1 bioreactor culture, whole differentiation occurred from 48 h, and then proceeded rapidly. As swollen hyphal fragments and arthrospores increased, cephalosporin C (CPC) production increased exponentially to $1.85\;g/1^{-1}$ at 72 h. To explain the morphological changes of Cephalosporium acremonium M25 more quantitatively, specific differentiation rates and fractal analysis were employed. Specific differentiation rates of morphological factors varied greatly during the period of culture time from 48 h to 72 h, when CPC production increased significantly. Changes of fractal dimensions showed a pattern similar to that of the specific rate of arthrospores. Furthermore, it was inversely related to the specific rate of tips. Overall, it was suggested that the fractal dimension had potential for a new morphological parameter of fungal morphology, showing complex differentiation patterns.