http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
독가시치류의 일종 Siganus canaliculatus(PARK)의 산란기 생식소와 난발생
박무억,이영돈,노섬 제주대학교 해양연구소 1992 해양자원연구소연구보고 Vol.16 No.-
Mature adults of Rabbit fish, Siganus canaliculatus. which is generally known to be distributed up to the southern costal waters of Korean peninsula, were captured in Ham-duck, northeast of Cheju on August 2. 1992. Gonad of the Rabbit fish was investigated histologically on the view point of gonadal development. Pale yellow ovaries are consisted of the mature oocyte groups and early growing oocyte groups, while Yellowish red ovaries consisted of the ripe oocyte groups and early oocyte group. Milky white testis is mostly filled with spermatozoa in the lobular cavity. The eggs and sperm were stripped and fertilized by the wet method on the laboratory. The fertilized egg diameter varied from 0. 57mm to 0.61mm. The water temperature throughout incubation ranged from 26℃ to 27℃. The hatching took place in 32 hour after fertilization. The newly hatched larvae are averagely 1.94mm in TL, possessing yolk sac.
김창석,황석영,서진연,정삼용 조선대학교 동력자원연구소 1995 動力資源硏究所誌 Vol.17 No.1
This paper describes the proper selection method of the power system stabilizer(PSS) parameter for stabilizing operation of a synchronous machine which connected to infinite bus by using pole assignment method. The purpose of PSS is to enhance the damping capability at small frequency oscillation (0.5∼2㎐). It can be achieved by moving the real part of critical eigenvalue (pole) on left side of s-plane. The PSS parameter was selected by using the proposed method to match with a pre-assigned pole associated with poorly damped swing mode. This method has been studied to synthesize the PSS on Yong-Gwang N/P. And the simulation results show that the selected parameter by using proposed method is effective for dynamic and transient stability of power system.
꼬리줄나비고기, Chaetodon wiebeli의 초기발생
이치훈,김병호,노섬,이영돈 제주대학교 해양과환경연구소 2004 해양과환경연구소 연구논문집 Vol.28 No.2
The development of eggs and larvae of the butterflyfish. Chaetodon wiebili were observed. Fertilized eggs were spherical. colorless. and driven into gelatinous masses. They measured 0.75±0.18 in diameter and not contain an oil globule. Hatching taken place 61.0 hours after two celled stage at water temperature 25.6-27.7℃. Newly hatched larvae measured 0.91 nm in total length and had an ovoid yolk of 0.65 nm in longest diameter. In 72 hours after hatching. the larvae grew 1.72 nm in total length. The mouth and anus were open and the melanophore pigments appeared above the eyes. The pectoral fins are formed and the larvae began to swim actively.
Reproductive Cycle and Spawning Rhythm of the Ascidian, Halocynthia hilgendorfi ritteri
Young-Jin Choi,이치훈,Sum Rho,Young-Don Lee 한국통합생물학회 2004 Animal cells and systems Vol.8 No.1
Reproductive cycle and spawning rhythm with lunar cycle of the ascidian, Halocynthia hilgendorfi ritteri were investigated by histological examination. The specimens were sampled in the coastal waters of Yongdam, northwest of Jeju Island, Korea, from November 2001 to January 2003. H. hilgendorfi ritteri is a synchronous hermaphrodite; the gonads are located in the mantle. The reproductive cycle can be grouped into the following successive stages in the ovary: growth (February to June), vitellogenesis (April to September), mature (July to December), spent (November to February), and recovery (December to April). Likewise, in the testis, the stages observed were: growth (October), mature (October to December), spent (November to February), and resting (January to September). Major spawning probably occurs between November and January, when water temperatures decrease. The histological observations of the gonads suggested that this species is a multiple spawner during the spawning period. Spawning occurred between the new moon and full moon, and again between the full moon and new moon, suggesting that the spawning rhythm is influenced by the lunar cycle.
박선태 ( Sum Teh Bark ),구본철 ( Bon Cheol Koo ),문윤호 ( Youn Ho Moon ),차영록 ( Young Lok Cha ),윤영미 ( Young Mi Yoon ),김중곤 ( Jung Kon Kim ),안기흥 ( Gi Hong An ),박광근 ( Kwang Geun Park ),박돈희 ( Don Hee Park ) 한국공업화학회 2012 공업화학 Vol.23 No.4
비식량 농업부산물인 왕겨로부터 에탄올 생산을 위한 효율적인 바이오매스 전처리 방법을 탐색하였다. 고온·고압 조건의 회분식 반응기에서 알칼리 용매는 암모니아와 가성소다, 산 용매는 희황산을 사용하였다. 가성소다 용액 처리 후 희황산 용액으로 복합처리한 시료의 효소 당화효율이 82.8%로 가장 높게 나타났고 이때 약 94.7%의 회분 성분 제거율을 보였다. 전처리 왕겨 시료의 효소 당화효율과 회분 성분 제거율 추세가 거의 비슷하게 나타나 왕겨의 효소 당화 최대 저해요인이 회분(규산염) 성분임을 알 수 있었다. 따라서 규산염 함량이 높은 바이오매스는 고온·고압 조 건하에서 가성소다-희황산 복합 처리법을 적용하는 것이 효소 당화효율 증진에 매우 유리함을 확인하였다. The objective of this study was to investigate the efficient pretreatment method for bioethanol production from rice hull. Ammonia and sodium hydroxide as an alkaline solution and dilute sulfuric acid as an acidic solution were used in a batch reactor under high-temperature and high-pressure conditions. The highest enzymatic saccharification efficiency of 82.8% and ash removal rate of 94.7% were obtained in the dilute sulfuric acid treated sample after the sodium hydroxide solution treatment. The enzymatic saccharification efficiencies and ash removals of pretreated rice hull samples have very similar variation tendency. This means that the maximum obstructive factor for the enzymatic saccharification of rice hull is the ash (silicate) content in biomass. The findings suggest that the combined sodium hydroxide-dilute sulfuric acid treatment system under high-temperature and high-pressure conditions is a promising pretreatment method to enhance the enzymatic saccharification of the silica-rich biomass.
Development of Content-Based Trademark Retrieval System on the World Wide Web
Kim, Young-Sum,Kim, Yong-Sung,Kim, Whoi-Yul,Kim, Myung-Joon Electronics and Telecommunications Research Instit 1999 ETRI Journal Vol.21 No.1
In this paper, we describe a new trademark retrieval system based upon the content or the shape of trademark. The system has an on-line graphical user interface for the World Wide Web (WWW) that allows user to provide a query in forms of a sketch or a visual image to search for similar trademarks from database. User interfaces for the WWW were implemented by utilizing HTML and Java applets. The query can occur in arbitrary size and orientation. A shape representation scheme invariant to scale and rotation was developed to measure the similarity between two trademarks using the magnitude of Zernike moments as a feature set. Performance evaluation has been carried out with a database of 3,000 trademarks. It takes only about 0.6 second for the retrieval on a 200 MHz Pentium PC. The average recall of the original one among top 30 candidates queried by noisy or deformed images was 100%.
Production of Maltopentaose and Biochemical Characterization of Maltopentaose-Forming Amylase
KIM, YOUNG-MIN,RUY, HWA-JA,LEE, SUN-OK,SEO, EUN-SEONG,LEE, SO-YOUNG,YOO, SUM-KYUN,CHO, DONG-LYUN,KIM, DOMAN,ATSUO KIMURA,SEIYA CHIBA,LEE, JIN-HA 한국미생물 · 생명공학회 2001 Journal of microbiology and biotechnology Vol.11 No.4
Bacillus sp. AIR-5, a strain from soil, produced an extracellular maltohentaose-forming amylase from amylose and soluble starch. This bacterium produced 8.9g/l of maltopentaose from 40g/l of soluble starch in a batch fermentation and the maltopentaose made up 90% of the maltooligosaccharides produced (from maltose to maltoheptaose). The culture supernatant was concentrated using a 30K molecular weight cut-off membrane and purified by DEAE-Cellulose and Sephadex G-150 column chromatographies. The purified protein showed one band on a native-PAGE and its molecular mass was estimated as 250kDa. The 250-kDa protein was composed of tetramers of a 63-kDa protein. The isoelectric point of the purified protein was pH 6.9, and the optimum temperature for the enzyme activity was 45℃. The enzyme was quickly inactivated above 55℃, and showed a maximum activity at pH 8.5 and over 90% stability between a pH of 6 to 10. The putative N-terminal amino acid sequence of AIR-5 amylase, ATINNGTLMQYFEWYVPNDG, showed a 96% sequence similarity with that of BLA, a general liquefying amylase.