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한국산 벗굴, Ostrea denselamellosa의 유생발생
양문호,한창희,김형섭,최상덕 한국패류학회 1999 The Korean Journal of Malacology Vol.15 No.2
We investigated the processes of egg and larval developments for aquaculture technique development of seedling production fo the flat oyster, Ostrea denselamellosa. Teo flat oyster of larviparous type was different from the pacific oyser (ovivarous type) because their larvae (trochophore and prodissoconch larvae) in the gill released into the seawater. The process of egg development was observed by artificial fertilization at $25^{\circ}C$, using a dissecting method. The sizes of Unfertilized eggs ranged from 80 to 90 $\mu\textrm{m}$ and fertilized eggs with globule-shape was 90-100 $\mu\textrm{m}$. The Polar body appeared after fertilization and egg cleavage began within 1 hour, reaching the blastula stage after 10 hours. The trochophore in the gill appeared 2-3 days after fertilization and grew to the prodissoconch larvae (130 140 $\mu\textrm{m}$) having a complete shell after 1-2 days. The shell of prodissoconch larvae grew to 205 220 $\mu\textrm{m}$ after 10 hours, and then they became umbo stage larvae showing oval in shape. The velum of umbo stage larvae was degenerated about 17-20 days after fertilization and grew into a pediveliger with a developed foot, at this time, the shell length size was 320 360 $\mu\textrm{m}$.
Swcnts complexes with phthalocyanine for ORR
양문호,손호승,박종승,장동욱 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
These days, fuel cell is one of the important materials to keep the environment and energy. Therefore, Pt catalyst for fuel cell was promising. However, some of disadvantages of Pt catalyst such as high cost, low durability and so on. Thus, lots of researchers try to find other materials to replace the Pt catalyst with new Things. In this study, we tried to focus on the metal phthalocyanine coated on single-walled carbon nanotube (SWCNT). This is because it has promising electronic and catalytic properties such as high Current density, electron transferred number, and so on. For these things, a complex with Swcnt and metal phtalocyanine was function at ORR system. The results were obtained by using some of electronic analytical techniques such as linear-sweep voltammetry (LSV), cyclic voltammograms and so on. Therefore, in this study, we showed that complex of metal phthalocyanine and SWCNT provide the better electronic and catlaytic properties for ORR then pristine materials.
梁文浩,咸毅根,申鉉守,李尙國 최신의학사 1968 最新醫學 Vol.11 No.4
A pathologic study is made on fifty-eight cases of salivary gland tumors of Koreans, obtained during a period of twelve years, 1955^1966, at the Department of Pathology, College of Medicine, Seoul National University, and followings are the results: 1. The tumors examined consist of 38(65.2%) benign and 20(24.8%) cases of malignant tumors. 2. Incidence of histological types of these tumors is highest in benign pleomorphic adenoma (62.1 %), and thereafter malignant pleomorphic adenoma (8.6%), adenocarcinoma (8.6%) and squamous cell carcinoma (6.9%) in order. of frequency. 3. Site distribution shows major salivary glands to be involved 68.9%, in minor 20.5%, and site undeter-', mined 10.3%, respectively. Of the major ones, parotid glands are most frequently affected in 25.9%, followed ',.by submandibular 12.1% , and sublingual 6.9%. Of the minor ones, palate, lip, tongue, maxilla, and mandible are affected in order of frequency. 4. Overall age distribution shows highest peaks of benign tumors in 4th decade, and of malignant in 5th. 5, Male is more frequently affected with ratio of 1.8 : 1 to female.
양문호,손호승,박종승,장동욱 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
These days, metal phthalocyanine coated on single-walled carbon nanotube (SWCNT) is expected that it is one of the most distinguished materials for diverse applications. This is because it has prominent electronic and catalytic properties like current density, electron transferred number, and so on for the oxygen reduction reaction (ORR). We obtained these results from the electronic analytical techniques such as linear-sweep voltammetry (LSV), cyclic voltammograms and so on. Therefore, in this study, we showed that metal phthalocyanine help SWCNT enhance diverse properties for ORR.
벗굴, Ostrea denselamellosa, 유생의 인공대량사육과 채묘방법에 따른 채묘율
양문호,김형섭,이재용,한창희 한국패류학회 2001 The Korean Journal of Malacology Vol.17 No.1
벗굴의 종묘확보 방안을 모색하기 위하여 유생의 대량사육에 의한 인공채묘와 자연채묘율을 조사한 결과는 다음과 같다. 모패에서 방출된 D형 유생 (각장 153.4 $\mu\textrm{m}$, 각고 137.2 $\mu\textrm{m}$)을 3 톤짜리 F.R.R 수조에 5.8 개체/ml의 밀도로 대량 사육한 결과 유생사육 16일 째에 벗굴 유생의 성장률은 각장과 각고가 202.6%, 212.9%로 성장하여 310.9 $\pm$ 9.8 $\mu\textrm{m}$ ,292.2 $\pm$ 9.1 $\mu\textrm{m}$이었으며, 부착시기인 사육 20일 째는227.1%, 241.8%가 성장하여 348.4 $\pm$ 9.1 $\mu\textrm{m}$, 331.7 $\pm$ 9.4 $\mu\textrm{m}$였다. 그리고 16일 째에는 사육 기간 중 일간 사망률이 가장 높은 0.160, 일간생존율은 0.840을 보이면서 생존율은 54.8%였으며, 사육 20일 째의 최종 생존율은 43.2%였다. 굴 패각, 가리비 패각, 피조개 패각 그리고 PVC 조각을 이용한 부착기질별의 인공 채묘율은 32.9%, 24.1%, 16.8%,10.0%로 굴 패각이 32.9% (131.9 개체/패각) 로 가장 높았으며, 단위면적당 부착율도 굴 패각이 2.69 $\pm$ 0.31 개체/$\textrm{cm}^2$로 가장 높게 나타났다. 채묘방법에 따른 치패 부착율은 채묘기질을 수중에 시설한 수하식방법에서 54.2 개체/패각 (1.00 개체/$\textrm{cm}^2$) 보다 패각을 수조저면에 배열하는 바닥식이 83.8 개체/패각 (평균 1.69 개체/$\textrm{cm}^2$) 으로 높은 부착율을 보였다. 자연채묘는 노출보다는 비노출이, 채묘기질은 그물 등 부드러운 기질보다는 견고한 조개 패각을 이용하여 채묘 하는 경우가 높게 나타났으며, 수층별의 자연채묘는 표층보다는 저층에서 부착율이 높게 나타났다. 벗굴의 인공치 패는 부착 후 26일경에 각장 2.38 $\pm$ 0.97 mm, 각고 2.16 $\pm$ 0.86 mm로 성장하였고, 일간 성장률은 각장 3.75-7.69%, 각고 3.23-7.97%로 나타났으며 3개월 후 각각 28.58 $\pm$ 2.39 mm, 31.65 $\pm$ 2.03 mm로 성장하였다. 채표기질에 따른 부착율은 굴 패각, 가리비패각, 피조개패각 그리고 PVC조각에서 각각 10.3, 5.8, 4.0, 1.5개체로 굴 패각에서 가장 높게 나타났다. This research was conducted to develop seedling production techniques in flat oyster, Ostrea dense lamellosa. The cultivation of larvae, artificial spat and spats collection in natural conditions rate were examined. In the mass culture tank (3 tons), average growth rates of the D Shape larvae of initial shell length (153.4 ㎛) and shell height (153.4 ㎛) were 202.6% and 212.9% at 16 days and 227.1%, 241.8% at 20 days, respectively. Instantaneous death and survival rate of the larvae were 0.160 and 54.8% at 16 days and 0.057 and 43.2% at 20 days, respectively. Collection rate of flat oyster from bottom using various collectors with oyster shell, scallop shell, ark shell and PVC plates were 32.9%, 24.1%, 16.8% and 10.0%, respectively. and the greatest collecting rate was 131.9 individuals/shell (32.9%) in laid collectors on the bottom. The collecting rate of the oyster larvae were better in laid collectors on the bottom 83.8 individuals/collection than in the suspended string 54.2 individuals/collection. in all collecting substrates. Early spats settled on collectors were grew to 2.38 $\pm$ 0.97 ㎜ in shell length and 2.16 $\pm$ 0.86 ㎜ In shell height at 26 days. The spats were grew to 28.58 $\pm$ 2.39 ㎜ in shell length and 31.65 $\pm$ 2.03 ㎜ in shell height during the 4 month mid-term cultivation. In the period of cultivation, the mean number of spats attached to collectors were 10.3 individuals at oyster shells, 5.8 scallop shells, 4.0 ark shells and 1.5 PVC plates, respectively.