Changing Pattern of Infestation with Larval Trematodes from Fresh-Water Fish in River Kumho, Kyungpook Province, Korea

Hwang, Jae-Taeck,Choi, Dong Wik 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.2

琴湖江에서 採集되는 淡水魚에서의 吸蟲類 被襄幼蟲의 奇生上의 變化를 알아 보기 위해 1979年 3月부터 1980年 9月까지 同江流域의 4個處 東村, 淸線, 琴湖 및 永川에서 投網, 낚시 및 사발 모지 等으로 淡水魚를 採集하여 吸蟲類 被襄幼蟲의 魚種別 奇生率과 그 奇生程度를 調査한 다음 李(1968)의 調査成績과 比較하였다. 採集된 淡水魚는 큰납지리, 칼납자루, 붕어, 꼬치동자개, 꺽지, 몰개, 누치, 버들붕어, 납지리, 모래모치, 참붕어, 돌고기 및 피래미의 13種이었고 이들 淡水魚에서 7種의 吸蟲類 被襄幼蟲 Clonoechis sinensis, Cyathocotyle orientalis, Echinochasmus species, Exorchis oviformis, Metacercaria hasegawai, Meta onimus yokogawai, 및 Metrochis orientalis와 3種의 所屬不定 吸蟲類 被襄幼蟲 A, B, 및 C를 魚肉에서 찾아볼 수 있었다. Exorchis oviformis幼蟲은 13種의 全魚類에서 찾아볼 수 있었는데 비하여 Metacercaria hasegawai幼蟲은 12種, Clonorchis sinensis幼蟲은 11種, Cyathocotyle orientalis幼蟲은 9種, Metagonimus yokogawai幼蟲은 8種, Echinochasmus species는 6種 및 Metrochis orientalis는 4種의 魚類에서 찾아볼 수 있었다. 肝吸蟲 被襄幼蟲의 奇生率은 큰납지리, 칼납자루, 몰개, 및 납지리에서는 1968年의 그率에 比해 높았는데 反하여 누치와 모래모치에서는 오히려 떨어졌고 참붕어와 돌고기에서는 奇生率의 變動을 찾아 볼 수 없었다. 肝吸蟲 被襄幼蟲의 奇生程度의 標識로서 魚肉 1 gram當 被襄幼蟲數는 칼납자루와 돌고기에서는 1968年에 比해 이번 調査에서는 增加되었는데 反하여 누치와 납지리에서는 減少되었고 큰납지리, 몰개, 모래모치 및 참붕어에서는 有意的差를 認定할 수 없었으며 例外없이 참붕어에서 肝吸蟲 被襄幼蟲의 奇生數가 가장 많았다. 肝吸蟲을 除外한 吸蟲類 被襄幼蟲의 魚肉內 奇生率과 그 奇生程度의 比較는 3種의 被襄幼蟲 즉 Cyathocotyle orientalis, Exorchis oviformis 및 Metacercaria hasegawai에서만 可能하였는데 大體로 이번 調査에서는 1968年의 그率과 程度에 比해 모두 높았다. 비늘 및 지느러미와 꼬리에서의 吸蟲類 被襄幼蟲의 奇生率은 너무 變動이 甚하여 1968年의 그率과 比較할 수 없었다. In order to determine the recent patterns of infestation with the encysted larvae of digenetic trematodes from fresh-water fish collected in the river Kumho in Kyungpook Province, Korea, fish caught in the 4 localities, Dong-chon, Cheong-cheon, Kumho, and Yeong-cheon of the river were examined from March, 1979 to September, 1980. The fish were collected using following techniques; fishing, throwing a castnet, and using a bait of crushed oil cake in a transparent plastic bowl. The results were compared with the data obtained from fresh-water fish caught at the same river by Lee (1968). Thirteen species of fish, the Korean rose bitterling, Achanthorhodeus taenianalis, the oily bitterling, Acheilognathus limbata, the crussian carp, Carassius carassius, the bullhead, Coreobagrus brevicorpus, the perch, Coreoperca herzi, the Korean shiner. Gnathopogon atromaculatus, the Korean barbel, Hemibarbus labeo, the round tailed fighting fish, Macropodus chinensis, the flat bitterling, Paracheilognathus rhombea, the gudgeon, Pseudogobio esocinus, the southern top-mouthed minnow, Pseudorasbora parva, the striped shiner, Pungtungia herzi, and the pale chub, Zacco platypus, were examined for the presence of the encysted larvae of digenetic trematodes. Seven species of the metacercariae, Clonorchis sinensis, Cyathocotyle orientalis, Echinochasmus species, Exorchis oviformis, Metacercaria hasegawai, Metagonimus yokogawai, and Metrochis orientalis, and three kinds of undetermined cyst A, B, and C were found. Of these, the encysted larva of Exorchis oviformis was found most frequently from all 13 species of fresh-water fish, followed by the cyst of Metacercaria hasegawai from 12 species, the metacercaria of Clonorchis sinensis from 11 species, Cyathocotyle orientalis from 8 species, Echinochasmus species from 6 species, and Metorchis orientalis from 4 species of fish. The infestation rates for the metacercaria of Clenoerchis sinensis in Acanthorhodeus taenianalis, Acheilognathus limbata, Gnathopogon atromaculatus, and Paracheilognathus rhombea in the present study (1980) were higher than those reported by Lee(1968). By contrast the rates in Hemibarbus labeo and Psedegobio esocinus decreased, while no variation of the rates in Pseudorasbora parva and Pungtungia herzi was encountered. In the intensity of infestation, the average number of the cyst of Clonorchis sinensis per gram of flesh in Acheilognathus limbata, and Pungtungia herzi in 1980 increased compared with the average in 1968. By contrast, the number decreased in Hemibarbus labeo and Paracheilognathus rhombea, but no fluctuation in the intensity of infestation in Acanthorhodeus taenianalis, Gnathopogon atromaculatus, Pseudogobio esocinus, and Pseudorasbora parva was observed. In the both years surveyed, Pseudorasbora parva was the most heavily infested with the cyst of Clonorchis sinensis. The comparative data for the infestation rate and the intensity of infestation of the encysted larvae of Cyathocotyle orientalis, Exorchis oviformis, and Metacercaria hasegewai were obtained in both 1968 and 1980 surveys. The rates and intensities in the cysts of the three larvae in the present study increased compared with those in 1980. However, it was impossible to compare the infestation rates for the encysted larvae in the scales, fins and tail as they varied so considerably in both 1968 and 1980 surveys.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

경화제 주입에 의한 치핵치료의 후유증

이동식,심민철,김재황 대한대장항문학회 1997 Annals of Coloproctolgy Vol.13 No.3

성격장애 진단준거목록의 타당도 연구

황순택,정재홍,조연규,오동렬,김창현,양병환 漢陽大學校 精神健康硏究 1999 精神健康硏究 Vol.18 No.-

Scale Invariant Feature Transform을 이용한 눈동자 영역 추출

정재진,황의성,주동현,김두영 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1

This paper is the eye region which is used with confirmation element of face image it uses the SIFT and it extracting method proposes. The eye region image where becomes model and it composes the keypoint descriptor which is a SIFT result of the input image which it will extract. It uses the keypoint descriptor which and creates it composes a each feature vector, and the judgement where affine transform should have existed on after two feature points which adjusts with each other, against the feature point field which confront above half as the case eye region where the with each other same affine transform will exist it judged. There is not a test result learning process, more quickly recognition method of existing methods than the possibility of getting the result which extracts the region it was.

자궁내막증 백서모형에서 Danazol과 Decapeptyl의 치료효과에 관한 연구

황선보,이민석,심재현,김동훈,배한익 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

본 연구의 목적은 장간막에 자궁내막 조직을 자가이식하여 수술적으로 유도된 자궁내막증 백서모형에서 자궁내막증의 치료를 위해 danazol과 decapetyl의 치료효과를 평가하는 것이다. 백서(n=48)들은 무작위적으로 정상대조군(n=12)과 수술적으로 유도된 자궁내막증군(n=36)으로 구분하였다. 후자는 비치료군과, danazol 치료군과 decapeptyl 치료군으로 세분하였다(각 군의 n=12). Danazol(8mg/일)은 수술후 4째주부터 구강을 통해 투여되었다. Decapeptyl(0.2mg/2주)은 근주하였다. 처음투약후 10일, 20일, 40일, 60일째에 각군의 2마리의 쥐를 희생시켰다. 저자들은 자궁내막증 이식체와 난소의 크기를 측정하여 다음의 결론를 얻었다. 1. 자궁내막증 이식체의 크기는 비치료군에 비해(3.91±1.08mm) danazol 치료군과 decapeptyl치료군에서 (각각2.28±0.17mm 과 2.78±0.97mm), 현저히 감소되었다(p<0.01). 2. danazol과 decapeptyl 두 치료군에서 장기치료가 단기치료보다 자궁내막증 이식체의 크기를 감소시키는데 더 효과적이었다(p<0.01). 3. 난소의 크기는 정상대조군과, 비치료군과 decapeptyl 치료군에서 유의하게 차이를 보이지 않은데 반해(각각 4.46±0.85mm, 4.77±0.82mm과 4.97±0.92mm), danazol 치료군에서는 유의하게 감소하였다(3.97±0.63mm) (p<0.63mm). 백서모형에서 수술적으로 이식된 자궁내막조직의 성장과 발달은 자궁내막증의 병인 이해와 신약개발에 유용한 연구모델을 제공할 수 있을 것 이다. The purpose of this study was to surgically induce endometriosis in the rat by autotransplanting endometrial tissue to the mesentery and to evaluate the efficacy of danazol and decapeptyl for the treatment of endometriosis. Rats(n=48) were randomly assigned to normal control group(n=12) and surgically induced endometriosis group(n=36). The latter was further divided into the untreated, danazol treated and decapeptyl treated groups (n=12 for each group). Danazol(8mg/day) was orally administrated from 4weeks after operation. Decapeptyl(O.2ml/2weeks) was injected intramuscularly. Two rats of each group are sacrificed on the 10th, 20th, 40th, 60th, 80th and lOOth day after the first drug administration. We measured sizes of endometriotic implants and ovaries. The results were as follows; 1. The sizes of endometriotic implants were significantly decreased(P<O.Ol) in the danazol and decapeptyl treated groups (2.28±O.71mm and 2.78±O.89mm, respectively) compared with untreated group(3.91±l.08mm). 2. Long term treatment was more effective than short term treatment in decreasing the size of endometriotic implants in both danazol and decapeptyl treated groups(P<O.Ol). 3. The size of ovaries was not significantly different among the normal control, untreated and decapeptyl treated groups(4.65±O.83mm, 4.77±O.82mm and 4.97±O.92mm, respectively) but was significantly decreased(P<O.Ol) in the danazol treated group(3.97±O.63mm). The successful growth and development of surgically transplanted endometrial tissue in the rat may offer an useful research model that can be used to understand pathogenesis of endometriosis and to explore new drug therapies.

음식물 쓰레기 퇴비화 공정시 발생하는 악취가스중 CH₃CHO 제거에 대한 연구

황재동,정덕영,오광중 부산대학교 환경문제연구소 1997 環境硏究報 Vol.15 No.1

인버터를 이용한 의료용 X선 발생기의 고전압 발생장치 설계

주동만,민경일,황재효 永同大學校 1999 硏究論叢 Vol.5 No.1

인버터를 이용한 의료용 X선 발생기의 고전압 발생장치를 설계하는 방법을 제시한다. 본 논문에서 제시된 설계 방법에 의해 스위칭 주파수 20 ㎑인 고전압 발생 장치를 제작·실험하여 가변전압 0~620 V, 가변전류 50~500 ㎃를 얻었다. The method of designing high potential generator of diagnostic X-ray apparatus by using inverter is presented. The high potential generator with switching frequency to be 20 ㎑ is fabricated by using design method presented in this method. The experimental results are as followings; variable volts of 0 ~ 620 V and variable currents 50~500 ㎃.

동적-외연적 유한요소법을 이용한 도어 판넬 성형해석에 관한 연구

정동원,황재신 濟州大學校 海洋硏究所 2004 해양과환경연구소 연구논문집 Vol.28 No.2

Finite element method is a very effective method to simulate the forming processes with good prediction of the deformation behaviour. For the finite element modeling of sheet metal forming, the accurate tool model is required. Due to the geometrical complexity of real-size part stamping tools. it is hard to make a finite element model for real-size auto-body stamping parts. This paper, it was focussed on the drawability factors on auto-body panel stamping by Dynaform with using tool planinng alloy to reduce raw price as well as high precision from design optimization of the die. According to this study, the results of simulation will give engineers good information to access the design optimization of the die.

서울의 PPNG 발생 빈도(1991-1992)

김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1

The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.