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벼 葯培養에 關한 硏究 Ⅰ. 花粉의 dimorphism과 葯培養
Seung Yeob Lee(李承燁),Yeong Tae Lee(李暎泰),Hyun Soon Kim(金賢順),Tae Su Kim(金泰洙),Moo Sang Lim(林茂相),Man Sang Lee(李萬相) 한국육종학회 1987 한국육종학회지 Vol.19 No.1
The influence of pollen dimorphism in rice anther culture was investigated from 15 crosses, japonica type F₁ generation, in winter of 1985. Pollen dimorphism could be observed plainly in size and staining reaction, and the number of the S pollen grains was the most at early stage 6, but the laggard and A type S pollen grains were partly developed into normal pollen grains just before flowering. The size of pollen grain was different by developmental stage and those of N and S pollen grains were 40 to 50μ and 30 to 40μ respectively just before flowering. The rate of callus formation was significantly increased according as the number of S pollen grains was grew up to 16%, and also the date of callus emergence from anther was faster, and it was especially related to B type S pollen. However the rate of callus formation in the anther donor with a lot of empty pollen grains was lower regardless of a number of S pollen grains. The correlation between S pollen grain rate and plant regeneration rate was not admitted.
이왕훈 ( Lee Wang Hun ),이영태 ( Lee Yeong Tae ) 한국센서학회 2004 센서학회지 Vol.13 No.1
In this paper, we fabricated an apparatus of the electro-chemical discharge drilling for boring narrow through-hole into a glass. In the electrolyte, electro-chemical discharge creates high temperature condition by the electro-discharge energy. Therefore, glass are removed by the accelerated chemical reaction with glasses and chemicals in the high temperature condition. For optimization of the electro-chemical discharge drilling, the process condition was studied experimentally as a function of the electrolyte concentration, supply voltage and process time. The optimum condition was from DC25V to DC30V of applied voltage, 35 wt% NaOH solution.
여성의 복압성 요실금의 수술적 치료에서 Tension-free vaginal tape (TVT)과 Burch colposuspension의 비교
김조영 ( Kim Jo Yeong ),정희성 ( Jeong Hui Seong ),이영태 ( Lee Yeong Tae ),차선희 ( Cha Seon Hui ),김현철 ( Kim Hyeon Cheol ),강석호 ( Kang Seog Ho ),조진호 ( Jo Jin Ho ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.2
Objective : The purpose of this study was to compare the effectiveness, easiness, postoperative complications between tension-free vaginal tape (TVT) and Burch colposuspension (BC) in the surgical management of female genuine stress urinary incontinence. Methods : A retrospective study of 77 cases with stress urinary incontinence at Department of Obstetrics and Gynecology and Urology, Pochon CHA University Medical College from January 2000 to December 2002, followed up more than 6 months. All of 77 cases were above grade 2 genuine stress urinary incontinence, 37 cases were performed tension-free vaginal tape, 40 cases were performed Burch coloposuspension. Results : Cure rate was 91.4% in the tension-free vaginal tape (TVT) group, 90% in the Burch colposuspension group. The mean operative time for TVT was 23.4 minutes and for Burch colposuspension was 47.2 minutes. The mean hospital stay in TVT was 1.8 days and in Burch colposupension was 5.2 days. The incidence and severity of postoperative complication is similar in both groups. Conclusion : The cure rates of TVT were comparable with Burch colposuspension in the surgical management of female genuine stress urinary incontinence. And the incidence and severity of postoperative complication is similar in both groups. Moreover TVT is simple procedure more than Burch colposuspension.