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RISS 인기검색어
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- 저자 : 이균우 ( Lee Gyun U ) (검색결과 5 건)
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은어 자어 (Plecoglossus altivelis) 사육에 있어서 담수산 rotifer (Brachionus calyciflorus)의 먹이효과
이균우 ( Lee Gyun U ),박흠기 ( Park Heum Gi ),이상민 ( Lee Sang Min ),한현섭 ( Han Hyeon Seob ),임영수 ( Im Yeong Su ) 한국수산과학회 2004 한국수산과학회지 Vol.37 No.1
N/A This study investigated the possibility of salinity acclimation of freshwater rotifers (Brachionus calyczflorus) as live food for sweetfish (Plecoglossus altivelis) larvae, and also examined the optimal salinity for the growth of sweetfish. Freshwater rotifers cultured in 0 and 4PSU and seawater rotifers (B. rotundiformis) cultured in 33 PSU were supplied to the larvae with four kinds of enrichment material (condensed freshwater Chlorella, w-yeast, baker`s yeast, Super Selco) and larval growth at 4 PSU was examined. Growth of the freshwater rotifers positively increased from 0 PSU to 6 PSU, but decreased when over 8 PSU was reached. Growth and survival of the sweet fish larvae reared in 0 PSU were significantly lower than those reared in either 4 PSU or 33 PSU. This indicated that the freshwater rotifers (B. calyciflorus) could be used as live food for sweetfish larvae reared in 4PSU. The body weight of sweetfish larvae fed on freshwater rotifers enriched with Super Selco was the highest at 0.163 mg, but there was no significant difference in survival and body length of the fish fed with the other enrichment materials. The content of n-3 HUFA of the sweetfish larvae fed on the freshwater rotifers enriched with Super Selco and the condensed freshwater Chlorella was higher than that enriched with w-yeast and baker`s yeast. These results indicated that B. calyciflorus cultured with the condensed freshwater Chlorella could be used for the sweetfish larvae without enrichment, and the most efficient enrichment material for B. calyczflorus is Super Selco.
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고밀도 배양에 있어 먹이종류와 공급량 및 vitamin B12 첨가에 따른 담수산 rotifer (Brachionus calyciflorus)의 성장
이균우 ( Lee Gyun U ),박흠기 ( Park Heum Gi ) 한국수산과학회 2003 한국수산과학회지 Vol.36 No.6
N/A This study investigated the effects of food type (condensed freshwater Chlorella, dried Chlorella, dried Spirulina, dried Schizochytrium, baker`s yeast and w-yeast) and amount, and supplementation of vitamin BIZ on the growth of freshwater rotifer (Brachionus calyczforus) in high density culture. Growth of rotifers fed condensed freshwater Chlorella was the highest and its density ranged 7.65-8.14×10³ inds./mL. The primary lipid acids of rotifers fed condensed freshwater Chlorella were linoleic and linolenic, and their amount (% of total fatty acids) were 48.8% and 26.8%, respectively. This suggests that condensed freshwater Chlorella would be an effective diet for high quality and quantity rotifers, which in turn serve as live food for freshwater fish larvae. Growth rate of rotifers with Chlorella supplementation increased as amount of supplementation increased up to 1.5 and 2.5 mg at 28 and 32℃, respectively. However, undissolved ammonia toxicity and packing volume of Chlorella in culture medium, reached the optimal conditions for the stable and effective cultivation of rotifers when amount of condensed freshwater Chlorella was 1.5 mg in dry weight per 1,000 rotifers at 28℃ and 32℃. Growth of rotifers in condensed freshwater Chlorella with vitamin B_(12) supplementation was significantly higher than that of rotifers without supplementation. However, no significant difference was found among the different concentrations of vitamin BIZ. Therefore, vitamin B_(12) could improve the growth of rotifers (B. calyciflorus).
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3개월 이하의 남아에서 첫 요로 감염 후 방사선학적 검사의 평가
정종수,권경호,김종석,이영아,김현정,이균우,Jung Jong Su,Kwon Kyung Ho,Kim Jong Sik,Lee Young Ah,Kim Hyun Jung,Lee Gyun Woo 대한소아신장학회 2001 Childhood kidney diseases Vol.5 No.1
목 적 : 요로 감염 증상을 나타내는 생후 3개월 이하의 남아에서 요로계 기형의 유무를 측정하고 첫 요로 감염후의 적절한 방사선학적 검사를 제시한다. 대상 및 방법 : 1994년 3월부터 1999년 2월까지 5년간의 기간동안 65명의 요로감염이 있는 3개월 이하의 남아 환아(나이 범위: 4일-92일, 평균 나이 43일)에서 조사를 시행하였다. 모든 환아에게 신장 초음파와 배뇨성 방광 요도 조영술을 시행하였고 이중 5명에게서 보호자의 거부와 기술적인 문제 때문에 시행하지 못하였다. 99mTc-dimercaptosuccinic acid renal scan(이하 99mTc-DMSA 신장 스캔)은 모든 환아에게 추천하였으나 65명중 40명에게 시행이 되었다. 99mTc DMSA 신장 스캔은 요로 감염 후 적어도 3개월 이후에 시행되었다. 결 과 : 요로계 기형은 60명의 환아중 26명(43$\%$)에서 발견되었다. 이중 22명이 방광 요관 역류, 2명이 방광 요관 역류와 중복 요관, 2명에서 방광 요관 역류와 후부 요도 판막이 있었고 방광 요관 역류를 보이는 환아중 8명(13$\%$)에서 신장의 위축 및 반흔을 관찰할 수 있었다. 99mTc-DMSA신장 스캔상 신 위축과 반흔을 보이는 경우에서 방광 요관 역류는 grade III 혹은 그 이상이었다. 결 론 : 저자들은 3개월 이하의 남아에서 첫 요로 감염 후에 보편적으로 신장 초음파와 배뇨성 방광 요도 조영술을 시행해야 한다고 생각한다. 99mTc-DMSA신장 스캔은 신장 초음파상 신 실질 손상 혹은 배뇨성 방광 요도 조영술상 방광 요관 역류 grade III 혹은 그 이상 시에 시행해야 한다고 생각하며 추후 이에 대한 연구가 더 필요하다고 생각한다. Purpose : To evaluate tile frequency of urinary tract anomalies in male neonates less than 3 months old who presented with urinary tract infection(UTI) and to evaluate a appropriate imaging approach after first UTI. Materials and methods : During a period of 5 years from March 1994 to February 1999, 65 male infants less than 3months old(range: 4-92 days, mean: 43 days) with UTI were evaluated. Ultrasound(US) and Voiding cystourethrogram(VCUG) were done in 60 patients. Due to refusal and technological problem, 5 patients were missed. 99mTc-dimercaptosuccinic acid renal scan (99mTc-DMSA renal scan) was recommended to most patients but performed in 40 patients. Renal scan was performed at least 3 months later after urinary tract infection. Results : Urinary tract anomalies were found in 26 of 65 infants. Twenty-six had vesicoureteral reflux(VUR), two had both VUR and double ureter, two had both U and posterior urethral valve. In patients with VUR, eight had renal scar or renal atrophies. In case of renal scar or atrophy, grades of VUR were III or above. Conclusion : We suggest that US and VCUG should be routinely performed in infants(<3months)with first UTI. 99mTc-DMSA renal scan should be performed only when renal parenchymal damage was observed in US and VUR grade III or above in VCUG. (J. Korean Soc Pediatr Nephrol 5 : 30- 5, 2001)
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소아 결핵성 흉막 유출의 감별진단에서 흉막액 Adenosine Deaminase 의 유용성
권경호(Gyung Ho Kwon),김종석(Jong Suk Kim),정종수(Jong Su Jung),임장훈(Jang Hoon Lim),이균우(Gyun Woo Lee) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2002 소아알레르기 및 호흡기학회지 Vol.12 No.2
N/A Purpose: The aim of this study is to evaluate the value of pleural adenosine deaminase (ADA)in differentiating tuberculous pleural effusion from non tuberculous pleural effusion of children. Methods: We measured pleural ADA activity in patients with pleural effusion whose age were from seven months to seventeen years from January 1995 to October 2001. By some criteria the patients were grouped to tuberculous pleural effusion, bacterial effusion, mycoplasma effusion, malignant effusion, and other effusion. Results: The mean pleural ADA activity in tuberculous pleural effusion was 86.2±27.3 U/L. Pleural ADA activities in bacterial effusion, mycoplasma effusion, malignant effusion, other effusion were 32.6±20.1, 22.1±15.4, 23.1±10.9, 36.7±28.4 U/L, respectively. Pleural ADA activity in tuberculous pleural effusion was significantly higher than in any other group(P <0.001). At a level of 50 U/L, the sensitivity, specificity, positive predictive value (ppv), and and negative predictive value(npv) for the identification of tuberculous pleural effusion from nontuberculous pleural effusion were calculated at 93.8%, 84.8%, 81.1%, 95.1%, respectively. Conclusion: Pleural ADA is a useful test in the diagnosis of tuberculous pleural effusion of children from nontuberculous pleural effusion.
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