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APPROACH FROM PHYSICOCHEMICAL ASPECTS IN MEMBRANE FILTRATION
Iritani, Ei Ji,Mukai, Yasuhito 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.5
In membrane filtration, solution environment factors such as pH and solvent density are important in controlling the filtration rate and the rejection of the particles and/or the macromolecules. The filtration rate and the rejection in membrane filtration have been investigated from physicochemical aspects. It was shown that the properties of the filter cake formed on the membrane surface play a vital role in determining the filtration rate in membrane filtration. It was clearly demonstrated that such filtration behaviors as the filtration rate and the rejection are highly dependent on the electrical nature of the particles and/or the macromolecules. Furthermore, it was shown that the solvent density ρ has a large effect on the steady filtration rate in upward ultrafiltration.
Articles : Approach From Physicochemical Aspects in Membrane Filtration
( Eiji Iritani ),( Yasuhito Mukai ) 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.5
In membrane filtration, solution environment factors such as pH and solvent density are important in controlling the filtration rate and the rejection of the particles and/or the macromolecules. The filtration rate and the rejection in membrane filtration have been investigated from physicochemical aspects. It was shown that the properties of the filter cake formed on the membrane surface play a vital role in determining the filtration rate in membrane filtration. It was clearly demonstrated that such filtration behaviors as the filtration rate and the rejection are highly dependent on the electrical nature of the particles and/or the macromolecules. Furthermore, it was shown that the solvent density ρ has a large effect on the steady filtration rate in upward ultrafiltration.
Song, H.B.,Iritani, A. The Korean Society of Animal Reproduction 1985 Reproductive & developmental biology Vol.9 No.2
Ejaculated and epidiymal goat spermatozoa were preserved for 0, 6, 12 adn 18 h, and 0 and 18 h in a semi-aerobic condition at 20-$25^{\circ}C$, and preincubated for 5-6 h in a CO2 incubator in m-KRB solution. Then they were preincubated at different concentrations (3-5, 25-48 and 105-190$\times$107/ml), and ability of penetration into zona-free hamster eggs in vitro was examined. When ejaculated spermatozoa were preincubated in m-KRB solution after presservation for 12 and 18 h, 12 and 29% of zona-free eggs were penetrated, and only 4% of eggs were penetrated by epididymal spermatozoa which were preincubated after preservation for 18 h. When spermatozoa were preincubated at a low concentration, the penetration rates were very low. But when the sperm concentration during preincubation was 25-48 and 105-190$\times$107/ml, the penetration rates increased to about 30%.
Song, H.B.,Iritani, A. The Korean Society of Animal Reproduction 1985 Reproductive & developmental biology Vol.9 No.2
When goat spermatozoa were preincubated for 4-6 h and 6 h in the uteri isolated from hamster and rat, and for 6 h in the hamster uterus in situ, they developed the ability to penetrate zona-free hamster eggs in vitro. Zona-free hamster eggs were not penetrated after insemination with goat spermatozoa preincubated in the isolated hamster uterus 4 h before and 2 h after expected time of ovulation, respectively. Zona-free hamster eggs were not penetrated after insemination with goat spermatozoa preincubated for 4 h in the isolated hamster uterus, but 10 and 18% of eggs were penetrated by spermatozoa preincubated for 5 and 6 h in the isolated uterus.
생식선자극(生殖腺刺戟) 호르몬 처리가 산양의 배란난자(排卵卵子) 및 난포란(卵胞卵) 채취에 미치는 영향
송해범,입곡명 한국낙농학회 1986 韓國酪農學會誌 Vol.8 No.4
本 硏究는 成熱 및 未成熱 雌山羊에 生植腺剌載호르몬 처리가 排卵卵子 및 卵胞卵 채취에 미치는 영향을 검토하기 위하여 18 頭의 成熱雌山羊과 21 頭의 未成熱雌山羊을 公試하여 실시하였다. 實驗結果를 要約하면 다음과 같다. 1. 穎粒膜細胞에 둘러 쌓인 卵胞卵은 未成熱雌山羊에서 호르몬 무처리구 22.7개, PMSG처리구 54.2개, PMSG와 HCG 처리구 25.8개였으며, 成熱雌山羊에서는 PMSG 처리구 16.3개, PMSG와 HCG 처리구 7.8개였다. 2. 擴散된 穎粒膜細胞에 둘러 쌓인 卵胞卵은 PMSG와 HCG 처리구에서 成熱雌山羊은 1.7개, 未成熱雌山羊은 8.0개로 未成熱雌山羊이 成熱雌山羊보다 生植腺剌載호르몬 처리에 더욱 민감한 반응을 보였다. 3. PMSG와 HCG 처리구에서 排卵點은 成熱雌山羊은 7.4개, 未成熱雌山羊은 3.9개였으며, 採卵率은 각각 57%와 51%였다.