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서형철 檀村文學會 1960 檀村 Vol.4 No.-

응급실내원 자살시도자에서 MMPI 특성

서형철,오성범,김태훈,이준형,강석훈,임명호,Seo, Hyeong Chull,Oh, Seong Beom,Kim, Tae Hun,Lee, Jun Hyung,Kang, Suk Hoon,Lim, Myung Ho 대한불안의학회 2012 대한불안의학회지 Vol.8 No.2

Objective : The current study investigated the psychopathology characteristics of the suicide attempter visited in a university hospital for one year using the Minnesota Multiphasic Personality Inventory (MMPI) test commonly used in clinical medicine. Methods : 72 suicide attempter and 115 control group completed the Korean version of the MMPI. Results : The MMPI scores of the suicide attempters were significantly higher on the lie (L), infrequency (F), defensiveness (K), paranoia (Pa), psychasthenia (Pt), schizophrenia (Sc), hypomania (Ma) than the comparison group. Conclusion : We supposed that suicide attempter have more chance of being paranoid, psychasthenic, schizoid or hypomanic than the control group relatively. They seem to have psychotic psychopathology rather than neurotic psychopathology. These results suppoed that the psychopatholgy of suicide attempter may be different from the control group. However the final decision is indefinite, it needs more well designed systemic studies.

한국 서해안 꽃게, Portunus trituberculatus (Miers, 1876)의 난 성숙과 산란

서형철 ( Hyung Chul Seo ),장인권 ( In Kwon Jang ),조영록 ( Yeong Rok Cho ),김종식 ( Jong Sheek Kim ),김봉래 ( Bong Rae Kim ) 한국수산과학회 2009 한국수산과학회지 Vol.42 No.1

사육조건이 꽃게 ( Portunus trituberculatus (Miers)) 유생과 어린 게의 생존과 성장에 미치는 영향

서형철 ( Hyung Chul Seo ),임한규 ( Han Kyu Lim ),김종식 ( Jong Seek Kim ),조영록 ( Yeong Rok Cho ),장인권 ( In Kwon Jang ),강언종 ( Eon Jong Kang ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.3

The effects of food, temperature, salinity, and rearing density on the survival and growth of the swimming crab Portunus trituberculatus, were studied. With regard to food, the larval survival rate to zoea IV was the highest (53.9%) in the mixed feed group (rotifers+ Artemia), followed, in order, by the rotifer, commercial feed, and Artemia groups. The growth of young crabs reared on different diets was the highest in group VI. The survival rate to zoea II at 20 to 30℃ ranged between 77.2% and 83.1%, and was the highest for crab I (17.3%) at 25℃. When young crabs were cultured individually at four different temperatures (20, 25, 30, and 35℃), the growth did not differ significantly at 25 to 30℃, but was higher than at 20℃. The survival rate of larvae to crab I was 12.7 and 11.4% at 25 and 28 psu, respectively, while all of the larvae died at 15 psu. For young crabs, there was no significant difference in growth and survival from 20 to 30 psu. The survival rate decreased with increasing rearing density from zoea I to crab I. Each molting cycle took 1 month from crab I to VIII. Subsequently, the interval increased with growth. The mean body weight of crab XV after 24 months was 428.05±57.63 g.

스마트 아쿠아팜

차선희,서형철 한국수산과학회 양식분과 2020 한국수산과학회 양식분과 학술대회 Vol.2020 No.7

계란형질들과 난황 콜레스테롤 수준에 대한 닭의 계통과 키토산의 첨가 수준간의 상호작용 효과

석윤오,서형철 한국가금학회 2002 韓國家禽學會誌 Vol.29 No.2

백색란 계통인 Hy-line W-98과 갈색란 계통인 Hy-line Brown을 이용하여 주요 계란의 형질들과 난황 콜레스테롤 수준에 닭의 계통과 키토산의 첨가수준간의 상호작용 관계를 구명하고자 시험한 결과 난중에 대해서는 키토산의 첨가가 두 계통간에 서로 대조적인 경향을 나타내어 Hy-line Brown 계통에서만 키토산의 첨가가 난중의 증가에 기여했다. 평균 난백의 비율은 Hy-line Brown종에서는 키토산 첨가 그룹들과 대조구간에 유의한 타이를 나타내지 못했다. Hy-line W-98종에 있어서 C $H_{60}$구는 대조구에 비해서 평균난백의 비율이 유의하게(P<0.05) 낮았으나, C $H_{30}$구는 대조구와 별 차이가 없었다. 한편 평균 난황의 비율은 평균 난백의 비율에서 나타났던 경향과 반대로 Hy-line W-98종은 C $H_{60}$구가 대조구에 비해서, 그리고 Hy-line Brown은 C $H_{30}$구가 대조구에 비해서 유의하게(P<0.05)난황의 비율이 더 높게 나타났다. 평균 난각의 비율에 대해서는 두 계통 모두 키토산의 첨가로 난각의 질을 향상시키지는 못했다. 그러나 평균 난황콜레스테롤의 수준에 있어서는 두 계통 모두키토산 첨가구들이 대조구에 비해서 난황 Ig당 0.46mg~2.80mg정도가 더 낮은 것으로 나타났고, 특별히 Hy-line W-98종의 C $H_{60}$구는 대조구에 비해서 난황콜레스테롤의 수준은 유의한(P<0.05) 차이를 나타냈다. 그리고 자의 계통과 키토산 첨가수준간 상호작용 효과에 관한 유의성 분석결과 4개 시험 주령 전테 평균 난중(P<0.01), 난중에 대한 난백의 비율(P<0.05), 난황의 비율(P<0.01) 및 난각의 비율(P<0.05)은 모두 유의한 결과를 나타냈다. 한편, 전체 평균 난황콜레스테롤 수준에 대해서는 이들 두 요인간에 유의한 상호작용 효과를 나타내지 않았으나, 시험주령별 유의성 분석결과에서는 4개 시험주령 중 3개 시험주령에서 자의 계통과 키토산 첨가수준간에 유의한 상호작용 효과(P<0.01)를 나타냈다. The objective of this study was to investigate the line-by-feed additive interaction on egg traits and yolk cholesterol level in laying hens. Hy-line W-98 (white shell line) and Hy-line Brown (brown shell line) were used as experimental stocks and three groups were assigned in each line. The age of hens used in this study were from 40- to 46-wk-old. Two different levels of chitosan were also used as additive in chicken diet. The first (CH$_{30}$) and second (CH$_{60}$) experimental groups were fed basal diet added 30mg and 60mg chitosan/kg feed, respectively. And the control group (CON) hens were fed with basal diet only. The eggs were collected and analyzed at the end of 40, 42, 44, and 46-wk-old. In the mean egg weight, the CH$_{30}$ in Hy-line Brown was significantly heavier (P<0.05) than CON, but the CH$_{30}$ in Hy-line W-98 was significantly lighter (P<0.05) than CON. Whereas, the mean egg weight did not significantly differ between CH$_{60}$ and CON in both line. The mean albumen percentage in Hy-line Brown did not show significant between experimental groups and control group. On the other hand, the mean albumen percentage of CH$_{60}$ in Hy-line W-98 was significantly lower (P < 0.05) than that of CON, but there was no significantly different between CH$_{30}$ and CON. In the mean yolk percentage, it showed a reverse trend as shown in the mean albumen percentage; there were significantly higher (P<0.05) in CH$_{60}$ than in CON fur the Hy-line W-98, and higher in CH$_{30}$ than in CON for the Hy-line Brown. However, the mean shell percentages did not significantly differ between experimental groups and control group in both lines. In the mean yolk cholesterol levels, the CH$_{30}$ and CH$_{60}$ in both lines were lower by 0.46 mg ∼2.80 mg per gram yolk than CON. Although the interaction effect of line-by-supplementing level of chitosan in hens diet on the pooled mean of yolk cholesterol level was no significant, it showed a highly significant interaction (P<0.01) at three of four experimental ages.

단백질원에 따른 흰다리새우 (Litopenaeus vannamei)의 성장효과

김수경,김은지,서형철,장인권,김수경 한국수산과학회 양식분과 2012 한국수산과학회 양식분과 학술대회 Vol.2012 No.6

사육수 비교환 방식에 의한 흰다리새우의 고밀도 사육 II. 흰다리새우의 실내 중간양성

장인권,김종식,서형철,조국진 한국양식학회 2009 韓國養殖學會誌 Vol.22 No.1

Shrimp farming which is entirely conducted in outdoor ponds in the west coast of Korea has been suffered from mass mortality due to viral epizootics. Intensive indoor shrimp culture under limited water exchange can solve these problems of outdoor ponds including viral transmission from environment, pollution due to discharge of rearing water, low productivity and limited culture period. In this study, juvenile L. vannamei (B.W. 0.08-0.09 g) was stocked with 3,000-5,455/m3 in density in four raceway tanks (two 12.9 m2, two 18 m2 tanks) and cultured for 42 days with 2.7-3.4% of daily water exchange. Results from four tanks showed FCR of 0.79-1.29, survival of 38.2- 48.0%, and yields of 2.49-4.22 kg/m3 which is consistent with 12-20 and 8-14 times higher than those of commercial shrimp hatchery and outdoor pond in Korea, respectively. Concentrations of total ammonia nitrogen in all four tanks were 1.11-1.42 ppm in mean level and did not exceed 6.0 ppm (0.096 ppm of NH3) which is still acceptable levels for shrimp growth. During the culture trial, concentration of NO2-N rapidly increased from stocking, resulting in mean concentration of 18.45-22.07 ppm. It also exceeded 10 ppm over four weeks and maintained at 35-45 ppm for four days in all tanks, accounting for low survival of shrimp due to long-term exposure to high concentration of NO2-N. Nevertheless, the results with survival rate over 38% from raceways which experienced the extreme NO2-N levels suggests that under “biofloc system” white shrimp can acclimate to high NO2-N concentration to some degree.

사육수 비교환 방식에 의한 흰다리새우의 고밀도 사육 I. 후기유생(postlarva)의 실내 중간육성

장인권,김종식,조국진,서형철,조영록,Ayyaru Gopalakannan,김봉래 한국양식학회 2008 韓國養殖學會誌 Vol.21 No.4

Farming of the fleshy shrimp Fenneropenaeus chinensis which is a major cultured species in the west coast of South Korea, has been suffered from mass mortality due to disease epizootics including viruses. Since the Pacific white shrimp Litopenaeus vannamei was introduced to Korea in 2003, farming of this species has rapidly increased for years, occupying 62.5% of total cultured shrimp production in 2007. However the studies on L. vannamei culture methods for shrimp farming situations in Korea are very limited. Nursery culture of shrimp larvae has some advantages including increased survival, improved feed efficiencies, enhanced growth performance and reduced grow-out period. In this study, L. vannamei postlarvae (PL3-PL10) with a density of 3,750-9,090/m3 were cultured in four raceways under limited water exchange condition for 35 days. Survival was the highest (93.6%) in tank stocked with 4,090/m3 and was the lowest in tank with 9,090/m3(58.1%). Mean body weight at harvest ranged from 0.071 to 0.108 g, and FCR was 0.59-0.70 in all tanks. Concentration of total ammonia nitrogen was increased up to 20 ppm on day 10 in all tanks and thereafter gradually decreased by the third week of culture. Nitrite-nitrogen was rapidly increased from the third week, representing bio-floc condition by developed nitrifying bacterial community. Of the present nursery system some modification of structure and consideration for commercial scale are needed in order to be implemented to shrimp farmers.

주꾸미, Octopus ocellatus에 대한 마취제 염산리도카인의 마취효과

김병균,전제천,정의영,심두생,서형철 한국패류학회 2003 The Korean Journal of Malacology Vol.19 No.1

After the juvenile octopus individuals being discharged, it is hard to separately capture them because they attach strongly to the wall of the aquarium by the suckers on the arms. Therefore, anaesthetics (MS-222 or lidocaine-HCl) are usually used for capture from attachment. The anaesthetized time of the octopus by lidocaine-HCl was more faster 1.6 to 4.5 times under 200 ppm and 6.0 to 6.5 times in 300 to 500 ppm than those in MS-222. In the anaesthetized and recovery rates (%) by the exposed time, the juvenile octopuses were anesthetized by lower concentrations of lidocaine-HCl within the short time, and rapidly recovered from anesthesia. In the secondary anesthesia of the juvenile octopuses exposed with lidocaine-HCl by the elapsed time after the primary anesthesia, the anesthetized time was later in case of lower concentrations and long elapsed times, However, the anesthetized time was faster when their concentrations were higher and the elapsed time after anesthesia were shorter. Recovery from the secondary anesthesia was faster when the elapsed time was long in lower concentration, and was later when the elapsed time was shorter. In case of Octopus ocellatus, anaesthetic effects by lidocaine- HCl concentrations were better than those of MS-222. Doses of lidocaine-HCl and critical time for works at the indoor laboratory were proper in concentration of 100 ppm within 15 min. 두족류는 흡반에 의한 흡착력이 강하여 방류시 분리 포획에 어려움이 있는 어린 주꾸미의 마취 소요시간에 따른 효과면에서 200 ppm 이하의 농도에서 염산리도카인이 MS-222보다 1.6-4.5배정도 마취가 빨랐고 300-500 ppm의 농도에서는 5.10-6.0배 빨랐다. 노출시간에 따른 마취율과 회복률에 염산리도카인이 MS-222보다 저농도에서 짧은 시간 내 마취되고 고농도에서 빠른 시간 내에 회복되었다. 1차 마취 후 경과시간별 염산리도카인의 재마취에서 농도가 낮고 경과시간이 길수록 마취개시 및 종료시간이 늦어지고 농도가 높고 경과시간이 짧을수록 마취개시 및 종료시간이 빨라졌다. 재마취 회복 또한 저농도에서 경과시간이 길수록 빠르고 고농도에서 경과시간이 짧을 수록 회복이 늦어졌다. 주꾸미의 경우 MS-222보다는 염산리도카인이 마취에 좋았으며 작업을 고려한 사용농도 및 한계시간은 100 ppm 농도에 15분 이내가 적당하였다. 감사의 글이 논문은 2000년 국립수산진흥원 부안수산종묘시험장의 경상사업으로 수행된 연구 결과의 일부로 이에 감사드립니다.