• Food Science and Biotechnology
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• v.14 no.4
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• pp.533-536
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• 2005

[ ${\beta}$-Cryptoxanthin ] contents were determined from Citrus unshiu Markovich fruits grown in a greenhouse and open field of Jeju Island, off the southern coast of Korea. In a greenhouse and open field, the ${\beta}$-cryptoxanthin content in the peel was greatly increased by harvesting citrus fruits in the late season from August through November. However, ${\beta}$-cryptoxanthin content in the flesh was gradually increased and was superior to that of the citrus fruits grown in a greenhouse. ${\beta}$-Cryptoxanthin was efficiently purified from the flesh of citrus fruits harvested in the late harvesting season in November. The ${\beta}$-cryptoxanthin contents in the peel and flesh of citrus fruits harvested from a greenhouse in November were 0.89 mg% and 0.35 mg%, respectively, and in that obtained from an open field were 1.12 mg% and 0.35 mg%, respectively.

• Food Science and Biotechnology
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• v.15 no.5
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• pp.704-709
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• 2006

The mucilage production and tyrosine content in soy milk cake (SMC) fermented by Bacillus firmus NA-1, Bacillus subtilis GT-D, and B. subtilis KU-A was improved by fortification with 10% defatted soybean flour. The fibrinolytic activity and consistency of the SMC were drastically increased by solid-state fermentation for 1 day. However, the consistency of the fermented SMC gradually decreased during fermentation for 3 days. Furthermore, the tyrosine content of the freeze-dried powder of SMC fermented by three Bacillus sp. was 9 times higher than that of unfermented SMC. The soybean proteins, including the 7S and 11S subunits, were partially digested during alkaline fermentation, producing lower molecular-weight peptides. The fibrinolytic enzyme produced in SMC fermented by B. firmus NA-l and B. subtilis KU-A exhibited higher thermal stability than that of B. subtilis GT-D fermentation. The powder obtained from B. subtilis GT-D fermentation had an ${\alpha}$-amylase activity and lower consistency compared to those of B. firmus NA-1 and B. subtilis KU-A. In addition, this powder contained 6.3% moisture content, 27% crude protein content and 9 units of fibrinolytic activity and proteolytic activity.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.890-893
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• 2008

자율성 및 이동성 갖는 네트워크 구조의 하나인 MANET(Mobile Ad-Hoc Networks)은 각 node들은 그 특성에 따라서 clustering service을 한다. node의 전송과정 중 path access에 대하여 중요성 또한 강조되고 있다. 일반적인 무선 네트워크 상에서의 node들은 clustering을 하게 되는데 그 과정에서 발생되는 여러 가지 문제점을 가지고 전송이 이루어진다. 모든 node들이 송, 수신상의 전송 범위(Beam forming area)가지고 있으며, 이러한 각 node들의 전송범위 내에 전송이 이루어지는 전통적인 전송기술 mechanism을 찾는다. 이러한 전송상황에서의 송신하는 node와 수신된 node간에 발생되고 있는 중복성의 문제점으로 즉, 상호적용에 의한 네트워크 duplicate(overlapping)이 크게 우려가 되고 있다. 이러한 전송상의 전송 범위 중첩, node간의 packet 간섭현상, packet의 중복수신 및 broadcasting의 storming현상이 나타난다. 따라서 본 논문에서는 상황정보의 속성을 이용한 계층적 상호 head node들의 접근된 위치와 연계되는 전송속도, 보존하고 있는 head node들의 에너지 source value, doppler효과를 통한 head node의 이동방향 등 분석한다. 분석된 방법으로 전송상의 계층적 path가 구성된 경험적 path 속성을 통한 네트워크 connectivity 신뢰성을 극대화 할 뿐만 아니라 네트워크의 전송 범위 duplicate을 사전에 줄일 수 있고 전송망의 최적화를 유지할 수 있는 기법의 하나인 상황정보를 이용한 ad hoc network의 ODDMRP(Ontology Doppler effect-based Dynamic Multicast Routing Protocol) clustering 기법을 제안한다.

• Journal of Fisheries and Marine Sciences Education
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• v.27 no.2
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• pp.566-575
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• 2015

The study aims to identify the generation and treatment of fishery by-products in Korea and suggests future directions and strategies for their eco-friendly utilization and industrialization. First, the study focuses on the identification of the generation and their treatment in Korea since merely few study were conducted and they did not provide enough information regarding the overall generation and treatment at the national level. According to the estimation, Korea generates 800 thousand to 1,200 thousand tones of fishery by-product every year. The fishery by-products generated at large seafood markets and processing facilities are used or processed as fish meal and feed, but those generated from households and small seafood restaurants are currently treated as food waste. In addition, inadequately treated fishery by-products cause various problems such as spoiling urban landscape, creating odor and incubating pest. After identifying the generation and treatment of fishery by-products, the study suggests directions for the formulation of infrastructure for transition into resource circulation society, minimization of dumped waste and their eco-friendly recycling as resources, diversification of recycled goods and development into a high-value added industry. Finally, the study suggests detailed strategies for the directions such as establishment of legal and institutional foundation, separation of fishery by-products from wastes, development of technology tailored for commercialization, introduction of pilot projects for industrialization and cultivation of social enterprises.

• Journal of Fisheries and Marine Sciences Education
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• v.14 no.2
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• pp.129-148
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• 2002

The purpose of this study was to investigate of fishery consciousness for fisheries high school teachers. The data was collected from 61 fisheries high school teachers in Kyungbuk Province. The treatment of materials are classified by level of academic careers, teaching careers. This research evaluated percentage to the frequency of reponses to each question and carried out $\chi^2$ - test, etc. The statistically significant level accounted for p<.05 and made use of SPSS10.0. The conclusion of the study were as follows: Strategic development of fisheries high school on fishery consciousness need to program with fishery characteristic, to promote maritime affairs had better systematic publicity activities. On educational system policy need to keep consistency of occupational education policy, change of titles of school and reconstruction of department, expand of carrier guidance direction. On high self-conceit of Hsheries high school teachers need to many discussion be based program of school itself and academic society. And director and vice-principle station region of islands, etc.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.22 no.2
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• pp.305-313
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• 1992

This study was designed to investigate the effects of the maxillary sinus development and nasal septum deviation on diseases of maxillary sinus with cleft palate. The materials was 152 cephalometric Waters' projections consist of 76 cleft patients and 76 normal subjects. The results were as follows: 1. The disease of maxillary sinus was present in 49% of a cleft group and 14% of a control group, and prevalent in cleft side. 2. It showed no statistically significant difference in size of the maxillary sinus in cleft plate patients compared to the control population and in the cleft side to the noncleft side(p>.05). 3. Nasal septum deviation was more severe in the cleft patient its average value was 3.55㎜, compared to the control group, 0.99㎜(p<0.01) and 77% of the deviated nasal septum was deviated to the cleft side.

• Proceedings of the KIEE Conference
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• 2004.07c
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• pp.1679-1681
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• 2004

Class-F and B resin-rich type insulating tapes are generally used for the ground wall insulations of respective air-cooled and water-cooled stator windings in larger turbine generators. In this paper, their electrical properties coupled with aging times in higher temperature than designed one in normal condition were experimentally investigated and the results of two comparative tests were presented on the existing class-F resin-rich type tape and a developed one after curing. The resin-rich tapes currently used arc composed of six and a half 3-layer sheets that arc structured with mica paper, the top and bottom supports of it respectively, and the epoxy resin to bind them tightly. The results for breakdown voltage and strength on the cured specimens were presented, which were composed of the unaged, the aged accelerated for one, two, and three thousand hours at 180 $^{\circ}C$. The surface and volume resistivities on them were measured and the results are also presented to make a comparative test for the initial electrical characteristics.

• Proceedings of the KIEE Conference
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• 2004.07c
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• pp.1676-1678
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• 2004

Class-F resin-rich type insulating tapes are generally used for the groundwall insulations of the large turbine generators with air-cooled and hydrogen-cooled stator windings. In this paper, mechanical strength properties degraded over aging time in higher temperature than designed one in normal condition were experimentally investigated and the results of comparative tests were presented on the existing class-F resin-rich type tape and a developed one after curing. The resin-rich insulating tapes with composite material of Mica/Epoxy/support currently were used in this test. The tests for tensile and flexural strength properties were conducted with the specimens which were composed of unaged and the aged specimens accelerated for one, two, and three thousand hours at 180 $^{\circ}C$. The tensional strength was only measured for the unaged specimens and the results are also presented to make a comparative test for their initial mechanical characteristics.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2004.05a
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• pp.229-234
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• 2004

A Typhoon wave is generated by wind fields during the Passage of Typhoon. Transporting wind field makes wind wave and swell in the open sea, and then, those wave components are transported in the shallow water. Typhoon waves in the shallow water is generated by Typhoon wind field and incident wave. Bisides, Incident waves to the shallow water are deformated by topographic conditions. This paper estimated the analysis of the Typhoon waves by wind fields and incident waves according to wave action balance equation model. As the result of wave numerical experiment, wave field during the passage of Typhoon 'Memi' in the shallow water is strongly effect by wind fields. Wave action balance equaion can be partially used for Typhoon wave simulations.

• Korean Journal of Optics and Photonics
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• v.11 no.6
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• pp.429-433
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• 2000

A study of the tunable fiber DFB laser using PZT-stretcher is presented. The device has an laser ocsillator by using a fiber Bragg grating at 1559.4 nm written directly into a 3-cm long $Er^{3+}$ doped fiber. Post UV-exposure method to provide the necessary phase shift is used for a single mode operation. The device shows the single mode operation of $230\muW$ output power and has a narrow linewidth of 35 kHz. The lasing wavelength of the laser can be tuned in a range of 3 nm by stretching the grating.rating.