• 한국어류학회지
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• 제34권2호
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• pp.133-137
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• 2022

동갈돔과에 속하는 Apogon unicolor 2개체(표준체장 81.0, 96.3 mm)가 제주도 차귀도 연안 자망에서 처음으로 채집되었다. 이 종은 측선공수가 26개, 첫 번째 등지느러미수가 6개, 새파수 11개(2+1+8)이며, 안하골과 전새개골의 가장자리에 거치상이 있고, 체측에 무늬나 반점이 없다. 이번에 채집된 표본은 형태와 분자유전학적 특징이 기존의 보고와 잘 일치하였으며 채색에 있어서 몸체와 지느러미가 전반적으로 홍색을 짙게 띠고 있어 이 종의 국명을 "진홍얼게비늘"로 제안한다.

• 한국수산과학회지
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• 제56권4호
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• pp.569-574
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• 2023

A single specimen (30.35 mm standard length) of Ptereleotris evides was collected from the southern coast of Jejudo Island, Korea, in September 2017 during a skin diving outing. Ptereleotris evides is characterized by having a slightly elongated body, six spines on the 1^st dorsal fin, one spine and 25 soft rays on the 2^nd dorsal fin, 22 pectoral fin rays, one spine and four soft rays on the pelvic fin, one spine and 25 soft rays on the anal fin, and no disc in pelvic fin. This species differs from the congeneric species, P. hanae and P. heteroptera in having no elongated rays on the caudal fin and a black spot at the ventral margin of the caudal peduncle, respectively. Molecular analysis results based on mitochondrial DNA cytochrome c oxidase subunit I (COI) sequences showed that our specimen almost corresponded to P. evides (99.82%) sequences from registered at the NCBI. As this is the first record of P. evides in Korean waters, we propose a new Korean name for it, "Ga-mak-cheong-hwang-mun-jeol".

• 한국수산과학회지
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• 제3권1호
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• pp.71-76
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• 1970

낙동강에서의 징거미 (M. nipponensis)의 상대 성장을 암수별로 조사한 결과 두흉갑장과 체장의 회귀 관계는 암수사이에 유의의 차가 없었으나 제2보각의 각절은 뚜렷한 차이가 있었고 그 회귀 관계는 다음과 같다. 1. 두흉갑장(X)과 체장(Y) : Y=2.68996X+1.14784 in female. Y=2.73121X+1.10827 in male 2. 두흉갑장(X)과 기절(Y) : Y=0.16910X-0.06422 in female Y=0.19410X-0.06075 in male 3. 두흉갑장(X)과 좌절(Y) : Y= 0.48524X-0.10812 in female. Y= 0.69052X-0.28616 in male 4. 두흉갑장(X)과 장절(Y) : Y=0.51217X-0.04088 in female. Y= 1.9792X-0.98258 in male 5. 두흉갑장(X)과 완절(Y) : Y=0.87701X-0.33919 in female. Y=2.00091X-1.64116 in male 6. 두흉갑장(X) 전절(Y) : Y= 1.04672 X-0.50727 in female. Y=2.67663X-2.40488 in male 7. 두흉갑장(X) 과 지절(Y) : Y=0.26366 X+0.15743 in female. Y=1.04866 X-0.67781 in male

• 한국토양비료학회지
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• 제40권3호
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• pp.221-228
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• 2007

제주도 토양의 분포특성을 객관적으로 파악하기 위하여 인접정도 및 해발고도별 토양통의 분포를 GIS기법을 이용하여 정량화하고 이를 바탕으로 통계분석을 실시하였다. 토양통 간의 인접정도는 각 통별 경계의 인접비율로 나타내었고 이를 토양통의 고유특성으로 파악하여 군집분석을 실시한 결과 5개의 군집으로 분류할 수 있었고, 이러한 결과는 정밀토양도에서 토색별로 4개의 토양군으로 구분한 분류체계와 유사한 결과였다. 정밀토양도에서는 토색, 해발고도, 토양의 화학적 특성 등 다양한 근거로 분류하였으나 이번 연구에서는 인접성 한 개의 기준으로 분류한 것으로 인접정도의 관점에서 볼 때 관행의 분류체계가 합리적일 수 있음을 의미하고 있다. 해발고도별 토양통 분포면적으로부터 토양통의 대표해발고도를 수치화할 수 있었고, 이를 바탕으로 토양통간 해발고도별 분포순서를 정할 수 있었다. 분포순서는 한라산의 정상에서 4면의 해안방향으로 갈색산림토 - 흑색토 - 농암갈색토 - 암갈색토의 순서로 토양이 연쇄되고 있어, 제주도 토양의 생성과정과 밀접하게 연관되는 것으로 추정되었다.

• 한국어류학회지
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• 제23권3호
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• pp.242-245
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• 2011

둥글넙치과에 속하는 Japonolaeops dentatus 4개체(표준 체장 152.9~l74.1 mm)가 제주도 주변 해역에서 처음으로 채집되었다. 이 종은 등지느러미 115~120개, 뒷지느러미 96~98개, 측선 바늘수 105~106개를 가지며, 윗턱이 눈앞까지 도달하고, 양턱에 이빨이 존재하는 점에서 J. dentatus로 확인되었다. 이 미기록종의 속명과 국명은 "검은꼬리넙치속", "검은꼬리넙치"로 각각 제안하였다.

• 한국어류학회지
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• 제29권4호
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• pp.277-281
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• 2017

복어목 쥐치과에 속하는 Thamnaconus tessellatus 1개체(표준 체장 273.1 mm)가 제주도 서쪽 해역에서 외끌이중형저인망으로 어획되어 부산공동어시장에서 2015년 5월 30일에 채집되었다. 이 개체는 두부와 몸 모두 암갈색 점이 밀집하여 분포하고 꼬리지느러미 말단이 검지 않으며, 등지느러미 첫 번째 극조가 눈 중앙의 뒤쪽에서 시작하고 등지느러미 연조가 34~37개인 것이 특징이다. 우리나라에서 처음 보고되는 이 쥐치류의 국명으로 Yamada et al.(1995)에 따라 "남별쥐치"를 제안한다.

• 한국수산과학회지
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• 제47권6호
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• pp.888-894
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• 2014

Seventeen specimens of leptocephali [9.8-44.5 mm total length (TL)], of the family Ophichthidae, were collected from southeastern waters off Jeju Island and the Korea-Japan intermediate zone, and identified by means of morphology and genetics. These specimens were identified as belonging to the subfamily Ophichthinae based on various combinations of morphological characters: 211-215 total myomeres; 7 gut swellings; 2 liver lobes connected with the gall bladder on the second lobe; 6-7 postanal pigments present from anus to caudal margin. An analysis of the partial 12S rRNA sequences (849 base pairs) of mitochondrial DNA showed that our specimens must be Ophisurus macrorhynchos because their sequences were concordant with those of the adult O. macrorhynchos (genetic distance = 0.000). Furthermore, their total myomeres were consistent with those of the O. macrorhynchos adult. This is the first time that the morphological characteristics of O. macrorhynchos leptocephali have been described for Korean waters, and we suggest diagnostic characteristics for the genus Ophisurus leptocephali. We hypothesize that one of the spawning grounds of O. macrorhynchos is located in the southeastern part of Jeju Island.

• KIEAE Journal
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• 제10권1호
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• pp.3-10
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• 2010

Riverside forests make a river bank stable because trees of them hold together the stone and soil by roots and decrease the speed of running fluid by trunks. So they become known to have positive effects on flood prevention. So This study will be a basic study to preserve and restore of riverside forests. The goal of this study is to classify types of Han riverside forests between Yangpyeng and Yeoju gun. and find out sites of planting. Results of this study can be summarized as follows; The evaluation indicators were set up based on literature review and site survey. Two indicator categories were developed: natural environment and human environment. And they were divided into 5 sub-categories for calculating weights. As for the major indicator categories, the weighted index of natural environment is at 0.5. And the weighted index of human environment is at 0.5 followed by access at 0.15, the range of user at 0.15, cultivated land at 0.1 and legislation at 0.1. This study selected 53 sites for riverside forests planting. They were classified with types of bank(11), level-upped riverside(32), island(10). The amount of the length of 11 bank types is 23,050m, the area of 32 level-upped riverside types is $4,490,000m^2$ and the area of 10 island types is $4,590,000m^2$. After the evaluation of 53 riverside forests, this study selected 12 sites of riverside forests. They were two bank types, nine level-upped riverside types, and one island type. Rebuilding riverside forests are to accomplish the green network which links and divides region. It will be one of the best ecological methods to construct friendly environmental region.

• Archives of Reconstructive Microsurgery
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• 제7권1호
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• pp.28-34
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• 1998

The traditionally useful coverage methods of the wrist and hand soft tissue defect are the chinese forearm flap, the ulnar forearm flap. But, this flaps are inevitably sacrifice major vessel to the hand. Advantages of the posterior interosseous artery island flap(PIA Flap) is no need to sacrifice blood supply to the hand and supply relatively large thin, good quality flap and more cosmetic than other forearm flaps. But, it is difficult to dissect and raise because of deep seat, close relation with the posterior interosseous nerve and anatomic variation. Authors evaluated 8 cases of 7 patients in the department of orthopaedic surgery, college of medicine, Hallym University from January, 1993 to December, 1995. The results are as follows: 1. The satisfactory coverage was achieved 7 cases and 1 case failed because of anatomic variation. 2 The pedicle length is average 9cm and the flap size is variable from 3cm by 4cm to 5cm by 8cm. 3. The donor site defect was repaired by direct closure in 5 cases, remained 3 cases combined with skin graft. From our experience we conclude that the PIA flap is one of the useful coverage methods of the wrist and hand soft tissue defect.

• 한국기계가공학회지
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• 제20권6호
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• pp.33-43
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• 2021

A60 class bulkhead penetration piece is a fire resistance system installed on a bulkhead compartment to protect lives and to prevent flame diffusion in a fire accident on a ship and offshore plant. This study focuses on the approximate optimization of the fire resistance design of the A60 class bulkhead penetration piece using a multi-island genetic algorithm. Transient heat transfer analysis was performed to evaluate the fire resistance design of the A60 class bulkhead penetration piece. For approximate optimization, the bulkhead penetration piece length, diameter, material type, and insulation density were considered discrete design variables; moreover, temperature, cost, and productivity were considered constraint functions. The approximate optimum design problem based on the meta-model was formulated by determining the discrete design variables by minimizing the weight of the A60 class bulkhead penetration piece subject to the constraint functions. The meta-models used for the approximate optimization were the Kriging model, response surface method, and radial basis function-based neural network. The results from the approximate optimization were compared to the actual results of the analysis to determine approximate accuracy. We conclude that the radial basis function-based neural network among the meta-models used in the approximate optimization generates the most accurate optimum design results for the fire resistance design of the A60 class bulkhead penetration piece.