http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Economic benefits and management implications of reducing the harvest of juvenile mackerel in Korea
이정삼,김대영,서영일,김도훈 한국수산해양기술학회 2016 수산해양기술연구 Vol.52 No.4
It is essential to provide good environment for juvenile fish to grow and spawn in order to keep reproduction mechanism of fisheries resources. However, harvesting juvenile fish deprives adult fish of the opportunity to reproduce, thereby changing self-regulating renewable resources into non-renewable ones and preventing sustainable harvesting as well as reducing fishers’ income. We reviewed the catch status of Korea on juvenile mackerel and analyzed how reducing the catch ratio of juvenile mackerel may affect the spawning stock and Korean fishermen's revenue. In addition, we analyzed the problem of caching juvenile mackerel in Korean fisheries and current efforts to protect and reduce the catch ratio of juvenile mackerel in Korea. Furthermore, we suggested future efforts to protect juvenile mackerel. The result of the study showed that reducing the catch ratio of juvenile mackerel from 44.4% to 30.0% would increase fishers’ revenue by 60.6 billion KRW. We suggest the changing of purse seine fishery’s catching methods from night operation to day operation, relocation of fishing vessels to move to other fishing grounds when fishing vessels meet high density of juvenile mackerel, and consumers’ clever choice of consuming adult mackerel in order to accelerate the move toward protecting juvenile mackerel in Korea.
이정삼,임선아,박창길 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.34 No.1
Epidural injection of morphine is widely used for relief of postoperative pain. However urinary retention, the side effect, following epidural morphine is troublesome for patient. A 45 year old male patient was admitted due to avascular necrosis of right hip joint and received bipolar endoprosthesis under continuous epidural anesthesia with 2% lidocaine 15 ml. In recovery room after operation, we applied 2 day,s continuous drug infusor(Baxter Infusor , Baxter Healthcare Co., USA) with morphine 2 mg and fentanyl 300 g in saline through epidural catheter. At 2 hour after operation, morphine 2 mg was added to the continuous drug infusor due to severe surgical pain. In ward, at 5 hour, he complained of voiding difficulty and abdominal distension. At 6 hour, Nelaton catheter was inserted and 1000 ml of urine was voided. On the 1st postoperative day, the continuous drug infusor was removed and he received naloxone 0.1 mg, two times, intravenously. But voiding difficulty was persisted. Intermittent Nelaton catheter or indwelling Foley catheter was inserted alternatively. Bethanechol chloride(Besacholine ) 15∼90 mg/day and prazosin hydrochloride(Minipress ) 2∼3 mg/day were administered orally and hot bag was applied on lower abdomen. On the 25th postoperative day, he was ultimately released from voiding difficulty and discharged without any problems. We suggested that the causes of urinary retention were bladder atony by overdistention of the bladder and contraction of internal urethral sphincter following epidural anesthesia, surgical pain and immobilization. (Korean J Anesthesiol 1998; 34: 222∼227)
이정삼,김병규 한국섬유공학회 1993 한국섬유공학회지 Vol.30 No.10
Polyurethane(PU) cationomers were synthesized from polypropylene glycol (PPG) isophorone diisocyanate(IPDI), and H-methyldiethanolamine(MDEA) using a prepolymer mixing process. Emulsions were obtained by adding water to the prepolymer solutions. Particle size and emulsion viscosity were studied as a function of the MDEA content. degree of neutralization and solid content of emulsion. It was found that at fixed solid content emulsion viscosity can be varied over 100 times depending on the MDEA content and degree of neutralization. Tensile properties of the emulsion cast film showed that modulus and strength increase with degree of neutralization as well as MDEA content.