http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이산화탄소 노출에 따른 두줄망둑(Tridentiger trigonocephalus)의 번식 특성 변화
황인준 ( In Joon Hwang ),최상준 ( Sang Jun Choi ),백혜자 ( Hea Ja Baek ) 한국수산과학회(구 한국수산학회) 2018 한국수산과학회지 Vol.51 No.1
We investigated the effect of CO<sub>2</sub> exposure on the reproductive process of chameleon goby Tridentiger trigonocephalus. Rearing aquaria were exposed for 90 days to CO<sub>2</sub> gas through diffuser connected with pH controller maintaining at pH 7.2 (156.31±7.90 ppm) in low treatment, and at pH 6.5 (274.17±6.51 ppm) in high treatment. CO<sub>2</sub> treatment had no significant effects on survival rates although the value was decreased compared to the controls. In female fish, CO<sub>2</sub> treatment had no significant effects on gonadosomatic index (GSI), hepatosomatic index (HSI) and condition factor (CF). However, high CO<sub>2</sub> treatment decreased HSI and CF in males significantly compared to the controls (P<0.05). The spawning occurrence was 6 times in the low level CO<sub>2</sub> treatment, and 4 times in the high level CO<sub>2</sub> treatment although only once in the controls. For the histological observations, there was no significant difference in CO<sub>2</sub> treatments. However, in male fish, CO<sub>2</sub> treatment delayed the formation of sperm from spermatid compared to controls. These results suggest CO<sub>2</sub> may disrupt reproductive process by delaying gametogenesis in chameleon goby and it was more sensitive in males.
정중구개 봉합선 급속확장시 구강 및 비강 변화에 관한 단층 두부방사선적 연구
황인준(In-Joon Hwang),박영철(Young-Chel Park) 대한치과교정학회 1991 대한치과교정학회지 Vol.21 No.3
It was said that early rapid palatal expansion was the treatment of choice in case of maxillary constriction with posterior crossbite. The author tried to assess dimensional changes of nasal and oral cavity before rapid palatal expansion and over 4 months of retention by use of three coronal tomograms through the incisal, molar, and maxillary tuberosity areas. The subjects of this study were consisted of 9 boys and 11 girls ranging from 11 to 13 years old. The results were as follows: 1. A mean change in maxillary first molar width was 3.68mm and a mean change in nasal cavity width was 2.26mm after 6.70mm expansion by Hyrax-type screw and over 4 months of retention tomographically in molar cut. 2. A change in nasal cavity width tomographically showed in order of molar cut, incisal cut, maxillary tuberosity cut respectively. 3. There was no correlation between changes in oral cavity width and nasal cavity width.
울진 바다목장 해역에 서식하는 강도다리(Platichthys stellatus)의 번식능력
황인준 ( In Joon Hwang ),이재봉 ( Jae Bong Lee ),최상준 ( Sang Jun Choi ),김슬기 ( Seol Ki Kim ),차형기 ( Hyung Kee Cha ),오택윤 ( Taeg Yun Oh ),백혜자 ( Hea Ja Baek ) 한국수산과학회 2012 한국수산과학회지 Vol.45 No.3
We investigated the reproductive capacity of starry flounder Platichthys stellatus from the Uljin (UJ) marine ranching area and compared it to that of P. stellatus from the coastal waters of Pohang (PH). In UJ, female gonadosomatic index (GSI) peaked in October (3.14±0.87) and male GSI was high in October and December. In PH, female GSI peaked in January (18.64±2.15) while male GSI began to increase in October and remained high until March. Most ovaries of UJ females were immature with perinucleus oocytes, although the testes of UJ males were ripe in January. Both the ovaries and testes of PH starry flounders were ripe from January to March. The plasma estradiol-17b (E2) levels of UJ females were highest in October (4.09±1.90ng/mL) although the testosterone (T) levels of UJ males were highest in December (3.81±0.78ng/mL) and decreased gradually until April. The 17a, 20b-dihydroxy-4-pregnen-3-one (17α20βP) levels of UJ females were not detected. The E2 levels of PH females were highest in December (36.25±33.07ng/mL) and 17a20bP levels were highest in March (5.51±0.95ng/mL). The T levels of PH males were highest in December (4.03±1.34ng/mL) and decreased gradually until October. Taken together, these results suggest that most females from UJ did not reach maturation with a spawning period that was considered to be between December and January.
거대한 구조물의 3차원 영상 재구성을 위한 외곽선 길이 정보 추출
전병승(Byung-Seung Jeon),박정민(Jung-Min Park),김영중(Young-Joong Kim),고한석(Han-Seok Ko),황인준(In-Joon Hwang),임묘택(Myo-Taeg Lim) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
본 논문은 큰 구조물의 3차원 영상 재구성을 위해서 획득한 2차원 영상에서 특징점을 찾아 선으로 조합한 후 선 길이 정보를 추출하는 방법을 제안한다. 거대한 구조물의 외곽선 길이 정보 추출을 위해서는 광각 카메라에 의한 영상을 획득한다. 영상에서의 외곽선들은 모델의 기울어진 정보와형태, 모델의 크기 등을 결정하게 되는데 광각카메라 사용에 의하여 배럴왜곡, 원근투영왜곡 등이 발생한다. 외곽선 정보 추출의 순서는 먼저 모델의 2차원영상을 획득하고 이로부터 왜곡이 보정된 그레이영상을 획득한다. 이 그레이영상에서 잡음을 제거하고 특징점을 찾기 위하여 SUSAN 알고리즘을 사용한다. SUSAN알고리즘 기법은 적은 계산량과 잡음에 매우 강한 장점이 있어서 영상에서의 특징점을 얻기 위한 효과적인 기법이다. 특징점을 3차원 벡터공간에서 맵핑시킨 후 X, Y, Z 좌표축으로 점과 선으로 나타내고 시작점과 끝점의 좌표를 이용하여 벡터 길이를 얻는다. 이러한 벡터 데이터와 3차원 영상 재구성을 위한 라이브러리인 OpenGL을 사용하여 3차원 공간에 거대한 구조물들을 재구성하는 소프트웨어를 개발하였다.