• 대한본초학회지
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• 제20권2호
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• pp.77-82
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• 2005

Objectives : A morphological classification among Achyranthes japonica Nakai (produced in Korea), A. bidentata Blume (imported from China), and Cyathula officinalis Kuan (used in China exclusively) was made through microscopic observation. Method : The slice of the tested material made by paraffin section technique was colored with Safranine Malachite Green contrast methods, and then observed and photographed by olymphus-BHT. Result : 1. Korean A. japonica Nakai has slim roots, whose diameter is $1{\sim}5\;mm$. 1) Most of its intersection is stele, which includes a lot of vascular bundles. The inside of vascular bundles shows the arrangement of $2{\sim}4$ cycles, the innermost wheel of which is divided into two parts. 2) Parts of parenchymatous cell include Crystal sand of calcium oxalate. 2. The diameter of the roots of Chinese A. bidentata Blume is $0.4{\sim}1\;cm$. 1) The xylem in the vascular bundle in the middle of its intersection is rather big, around which the inner parts of the vascular bundles are arranged in the shape of $2{\sim}4$ cycles around. The most outside part of it is small, and the middle part is gathered into $2{\sim}3$ groups. 2) Parts of parenchymatous cells include Crystal sand of calcium oxalate. 3. The roots of Chinese C. officinalis Kuan is thick, whose diameter is $0.5{\sim}3\;cm$. 1) Vascular bundle of its intersection is spotted, arranged in the shape of $4{\sim}11$ concentric circles, whose center is divided into $2{\sim}9$ groups. 2) Parenchymatous cells include crystal sand and square crystal of calcium oxalate. Conclusion : It is concluded that Achyranthes japonica Nakai, A. bidentata Blume, and C. officinalis Kuan have different shapes in both external forms and internal intersections, so that they can be easily distinguished from one another through microscopic observation.

• 수산해양기술연구
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• 제57권2호
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• pp.134-148
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• 2021

During the ichthyoplankton survey around the Chilsan Island (previously known as the biggest spawning ground of the Sciaenidae) in the southwestern sea of Korea from April to June in 2019 using ring nets, we collected a total of 12 individuals belonging to the family Sciaenidae. Using molecular methods, we identified five sciaenid species (Collichthys lucidus, Collichthys niveatus, Johnius grypotus, Nibea albiflora, and Pennahia argentata), and described and compared them on the basis of the preflexion larval stage. C. lucidus was well distinguished by the presence of occipital crests at preflexion stage. Although there were no occipital crests, preflexion larva of C. niveatus was distinguished by the absence of melanophore except for the upper part of the abdominal cavity. J. grypotus and N. albiflora were very similar morphologically, but were distinguished by myomere height (15.22-15.53% in J. grypotus vs. 11.66-12.78% in N. albiflora) in the percentage of notochord length, and eye diameter (32.58-33.37% in J. grypotus vs. 40.32-42.53% in N. albiflora) in the percentage of head length between specimens of similar size (J. grypotus: 3.22-3.23 mm, N. albiflora: 3.04-3.13 mm). P. argentata were distinguished by distribution of ventral caudal melanophore (one row of small spot in P. argentata vs. irregular patches on the central part of caudal in J. grypotus and N. albiflora). Comparative morphological studies using more diverse species must be conducted for more comprehensive understanding of the morphogenesis of Sciaenidae.

• 한국전통조경학회지
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• 제32권4호
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• pp.37-49
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• 2014

본 연구는 조선시대 읍치로부터 성장한 지방 소도읍의 하나인 고산을 대상으로 형태학적 개념과 연계하여 도시의 형성 발달과정에서 나타나는 형태구조와 도시평면 변화과정을 시계열적으로 분석해보고 시기별 형태특성을 도출해보고자 하는데 목적이 있다. 본 연구에서는 고산의 도시형태 분석을 위하여 콘젠과 카니지아가 설정한 도시형태 분석개념을 토대로 형태구조, 도시평면, 경로체계, 개발규정선, 전이지대, 중심지구, 평면단위, 형태시기, 브레이크 포인트, 자투리필지, 유휴지, 사유화 등의 개념을 도입하였다. 고산현시대에 골격이 형성된 고산의 도시형태 변천과정에는 도시형태 형성-구시가(kernel)의 형태구조 해체 재편-중심지구(epidome district)의 형성 발달-확장형 충진-중심지구 확장 재편으로 이어지는 순환적 사이클이 존재하고 있다. 공공사업은 고산의 형태구조와 도시평면의 변화를 주도하는 요인으로 작용하였다. 초기 단계 고산의 형태적 변화과정에는 간선경로로서 구시가(kernel)을 관통하며 개설된 신작로(고산로)와 이를 연결하는 계획로가 중요한 영향을 미치고 있다. 신작로 개설을 계기로 T(십(十))자형 골격도로체계를 바탕으로 구시가의 대부분을 점유하고 있던 관아시설구역의 평면단위가 소블록 단위의 개방형 평면단위로 전이되었다. 이와 더불어 신작로와 시장 경계도로를 따라 상가가 들어서면서 선형의 평면단위를 지니는 노선상가와 시장이 어우러진 근대적 중심지구를 형성하게 되었다.

• 한국통신학회논문지
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• 제19권10호
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• pp.1861-1871
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• 1994

본 논문에서는 농담구조소(濃淡構造素)(GSE, grayscale structuring element)를 갖는 형태학 필터의 실시간 처리를 위한 알고리즘을 제안하였다. 제안된 알고리즘에서는 GSE로부터 유도된 basis matrix와 입력 샘플들로 구성된 input matrix를 이용하여 각 형태학 연산들을 소역행렬연산(local matrix operation)으로 새롭게 정의하고 있는데, 이를 이용하여 opening이나 closing과 같은 복합 형태학 연산들을 실시간으로 처리할 수 있음을 보였다. 제안된 알고리즘은 복원 형태학 연산들을 erosion과 dilation의 직렬조합(cascade combination)으로 처리하던 기존의 방법에 비해 적은 메모리를 필요로 하면서도, 출력을 얻기까지의 지연(遲延)(delay)이 훨씬 적다는 장점을 갖는다. 또한 본 논문에서는 형태학 필터를 VLSI로 구현하기 위한 효율적 방안을 제안하였다. 제안된 방법에서는 p-bit으로 표현되는 신호에 대한 형태학 연산을 p개의 이진(binary) 형태학 연산자들의 조합으로 구현하였는데, 각 이진 연산자들은 MSB(most significant bit)부터 순차적으로 (bit-serial approach) 해당 레벨의 bit들을 처리하여 출력을 부를 구조로 이루어져 있다. 본 논문에서는 형태학 필터의 VLSI 구현에 있어서 제안된 방법이 기존의 Threshold Decomposition 방법 등에 비해 보다 효율적이라는 것을 보였다.

• 생약학회지
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• 제44권4호
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• pp.326-331
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• 2013

A Korean folk medicine, "SinKyungCho" has been used to cure common cold and rheumatis. While this crude drug has similar morphological feature to that of Rubia species, the botanical origin has never been studied pharmacognostically. Therefore, in order to clarify the botanical origin of "SinKyungCho", the morphological and anatomical characteristics of Rubia species growing in Korea, i.e. R. akane, R. chinensis var. glabrescens, R. cordifolia var. pratensis, R. cordifolia var. sylvatica were studied. Especially, differing from the other three species, R. cordifolia var. pratensis has 2-4 cork cell layers under the endodermal cell layer. R. cordifolia var. sylvatica showed the largest number of parenchyma cell layers in cortex by 8-17. While the average ratio of stele to root transverse section is over 45% for R. akane and R. cordifolia var. pratensis, the ratio is under 45% for R. chinensis var. glabrescens and R. cordifolia var. sylvatica. According to these morphological criteria, the folk medicine "SinKyungCho" from Korean traditional market was proved to be the underground part of R. akane.

• 대한전자공학회논문지
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• 제25권10호
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• pp.1183-1192
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• 1988

정확한 형태소 해석과정의 구현을 위해 heuristic 정보를 부가한 형태소 사전과 접속정보 테이블을 구성하고 문절수최소법을 근간으로 하여 자동 띄어쓰기 과정을 구현한다. 또한 독립적인 활용어 테이블을 구성하고, 접속정보 테이블과 상호 연계시켜 적용합으로 해서 접속정보와 활용어 정보의 구성을 간단하게 하였으며, 시스템의 검증과 확장 효율을 제고하였다. 번역 사전은 해석 사전과 생성 사전으로 구성하며, 해석과정의 효율과 보다 자연스런 역어의 생성을 위해 통계적으로 추출한 고빈도의 종결구를 관용어로 기술하고, 사전상에 직접 프로시쥬어를 기술하여 시스템의 적응성을 증대시켰다.

• 수산해양기술연구
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• 제50권1호
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• pp.39-49
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• 2014

Morphological and positional characteristics of anchovy aggregations, confirmed by trawling, were examined in two locations of the southern part of theWest Sea (T1) and the western side of South Sea (T11) of South Korea. Morphological characteristics (mean length, height and area) of the anchovy aggregations at T1 were smaller than those at T11, however the positional characteristics (distributional depth and bottom depth) of the aggregations at T1 were larger than those at T11. Diverse dataset such as the ship's cruise track, the cruse map, and interpolated three-dimensional-like water temperature were visualized in multiple dimensions. For a comprehensive understanding of the anchovy aggregations within their surrounding circumstances, the interpolated water temperature transferred to the location of anchovy aggregations at both stations were visualized based on geospatial information. Using quantitative investigation, the overall range of change in water temperature and salinity of anchovy aggregations at stations was considerably small. However, the water temperature and salinity of anchovy aggregations at T11 were somewhat higher than those at T1.

• Journal of Species Research
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• 제9권1호
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• pp.46-55
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• 2020

Chrysosplenium grayanum Maxim. (Series Nepalensia), which had been known to be restricted to Japan, was newly discovered from Mt. Cheongtae in Yeonggwang-gun, Jeollanam-do, located in the southern part of the Korean Peninsula. Species identification was confirmed using morphological characteristics and DNA sequence data, while comparing with materials obtained from Japan and herbarium specimens. Chrysosplenium grayanum is clearly distinguished from the remaining taxa of the genus Chrysosplenium by having glabrous plant body, opposite leaves, cylindrical papillae with roundish head at the tip on the smooth seed surface, and four stamens. Molecular sequence data of the nuclear ribosomal ITS regions, chloroplast rbcL and matK genes strongly supported that this previously unknown Chrysosplenium species from Korea is C. grayanum. Taking the molecular and the morphological evidence into consideration, it is clear that newly discovered Chrysosplenium population in Korea is conspecific with the widely distributed C. grayanum in Japan. In this paper, we provide a description, illustration, and photo images of Chrysosplenium grayanum from Korea and also a key to the Chrysosplenium species in Korea.

• 대한수의학회지
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• 제61권3호
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• pp.25.1-25.7
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• 2021

The axolotl has extraordinary regeneration capacity compared to other vertebrates. This remarkable potential has been attributed to its life-long neoteny, characterized by the exhibition of embryonic characteristics at the adult stage. A recent study provided a detailed morphological analysis of the sperm morphology of the Ambystoma mexicanum using routine and detailed histological techniques. The primary purpose of the present study is to describe a simple and inexpensive method for evaluating the morphology of axolotl sperm. In this study, spermatophore structures were collected and spread on slides and air-dried. The slides were stained with periodic acid Schiff, toluidine blue, Masson's trichrome, Giemsa, Spermac, and Diff-Quik dye for a morphological examination. The slides were coated with gold/palladium for a scanning electron microscopy examination. The sperm of the axolotl consisted of an elongated head, a neck, and a flagellum covered with an undulating membrane. The lengths of the midpiece, tail, and head were 8.575 ㎛, 356.544 ㎛, and 103.661 ㎛, respectively. In the flagellum part, the wavy membrane structure, whose function has not been explained, surrounds the tail. The data obtained from this study will constitute an important step in designing future research on the reproductive and regeneration capacity of the axolotl.

• 한국어류학회지
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• 제34권1호
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• pp.1-7
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• 2022

북서태평양 표층에서 채집한 후기 자어 (2.2 mm BL)의 미토콘드리아 전장 유전체를 근거로 Himantolophus groenlandicus로 동정하였다. 후기 자어는 둥근 몸통, 작은 이빨, 발달하기 시작한 등 지느러미, 아래 부분이 들어간 눈, 그리고 지느러미, 정수리, 등 부분에 분포하는 흑색소포를 가졌다. 이러한 특징은 크기가 유사한 동종으로 보고된 자어(2.1 mm BL)와 차이가 컸다. 본 연구 자어의 유전적, 형태적 특징은 유사종의 동정에 유용할 것이다.