• 한국산학기술학회논문지
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• 제11권4호
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• pp.1233-1238
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• 2010

현재의 조명 산업은 반도체 LED를 이용한 R(빨강), G(초록), B(파랑)를 각각 제어 연출하여 대형화, 시스템화 되어가고 있다. 조명 산업의 통신 제어 표준인 DMX512(ANSI E1.11) 프로토콜은 기본적으로 조명 단말기를 구별할 수 있는 주소가 필요하다. 기존의 방식은 이 주소를 조명 단말기에 어떠한 형태(Dip Switch, EEPROM에 저장, PROM에 저장)로든 부여하여 서로를 구별하고, 통신으로 전송되어온 자신의 색상 데이터를 통신 선로에서 얻을 수 있었다. 또한, 통신 규약에 의하면 DMX512 통신 프로토콜의 전기적인 특성상 조명 단말기 32개 마다 스프리터(splitter)가 필요하게 된다. 즉, 512채널이 전부 연결된다면 최대 16개의 스프리터가 필요하게 된다. 본 논문은 DMX512 프로토콜에서 이러한 단점을 해결하기 위하여 모든 단말기를 직렬로 연결하여 조명제어용 Auto-Addressing 갖는 지능형 조명 단말기를 개발하였다. 각 단말기에 주소 부여에 대한 불편함을 해소하였고, 스프리터의 사용 또한 필요없게 하였다. 또한 이 개발품을 반도체 LED 조명 단말기에 적용하여, ON-OFF제어, 디밍제어, 순차제어, 무지개제어 등이 동작하는 것을 확인하였고, 이를 바탕으로 상용화하였다.

• 한국산학기술학회논문지
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• 제15권11호
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• pp.6932-6942
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• 2014

고속도로는 국가발전의 원동력인 사회기반시설물 중의 하나로 사회발전에 중요한 역할을 담당하고 있으며 고속도로 연장도 계속적으로 증가되고 있으며, 수송의 고속성 뿐만 아니라 안전성, 저공해성, 쾌적성 등 한층 높은 수준의 서비스가 요구되고 있다. 그러나 한정된 고속도로 유지보수 예산으로 보수가 지연되어 포장상태는 계속적으로 악화되고 있는 실정이다. 따라서 본 연구에서는 기존 문헌 및 포장유지보수프로세스 문제점 고찰을 통하여 최적의 고속도로 포장유지보수 관리 체계를 확립하고 개선된 고속도로 포장유지보수 업무 프로세스를 제시하여. 한정된 예산 내에서 최소 비용으로 최대 서비스 제공이 가능한 장수명 포장관리 체계의 확립과 포장의 내구수명을 연장 할 수 있는 현실적으로 실무에 적용이 가능한 효율적인 고속도로 포장유지관리가 가능토록 하고자 한다. 본 연구에서 제시한 개선된 유지보수프로세스를 검증한 결과, 기존 방법보다 공사일수 감소, 공사비 및 유지관리비 절감의 효과가 있었다.

• 한국패류학회지
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• 제27권4호
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• pp.377-386
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• 2011

The ultrastructures of germ cells during spermatogenesis and sperm morphology in male Mya arenaria oonogai, which was collected on the coastal waters of Samcheonpo, south coast of Korea, were investigated by transmission electron microscopic observations. In the early stage of the spermatid during spermiogenesis, a few granules and a proacrosomal granule, which is formed by the Golgi complex, appear on the spermatid nucleus, and then it becomes a proacrosomal vesicle. Consequently, it becomes an acrosome by way of the process of acrosome formation. The morphologies of the sperm nucleus type and the acrosome of this species have a curved cylindrical type and cone shape, respectively. The spermatozoon is approximately $48-50{\mu}m$ in length including a curved cylinderical sperm nucleus (about $2.65{\mu}m$ long), an acrosome (about $0.64{\mu}m$ in length) and tail flagellum ($40-45{\mu}m$ long). As some ultrastructural characteristics of the acrosomal vesicle, the peripheral parts of two basal rings show electron opaque part (region), while the apex part of the acrosome shows electron lucent part (region). These charateristics of the sperm belong to the family Myidae or some species of Veneridae in the subclass Heterodonta, unlike a characteristic of the subclass Pteriomorphia showing all part of the acrosome being composed of electron opaque part (region). Therefore, it is easy to distinguish the families or the subclasses by the acrosome structures. Exceptionally, In particular, a cylinder-like nucleus of the sperm is curved (the angle of the nucleus is about $20^{\circ}$), as seen in some species of Veneridae (range from $0^{\circ}-80^{\circ}$). The number of mitochondria in the midpiece of the sperm of this species are four, as one of common characteristics appeared in most species except for a few species in Veneridae in the subclass Heterodonta. Cross-sectioned axoneme of the sperm tail flagellum shows a 9+2 structure: the axoneme of the sperm tail flagellum consists of nine pairs of peripheral microtubules at the periphery and a pair of central doublets at the center.

• 한국패류학회지
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• 제30권3호
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• pp.211-218
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• 2014

Spermatid differentiations during spermiogenesis and sperm ultrastructures in male Mercenaria stimpsoni were investigated by transmission electron microscopic observations. In the early stage of the spermatid during spermiogenesis, a few granules and a proacrosomal granule, which is formed by the Golgi complex, become a proacrosomal vesicle. Consequently, it becomes an acrosome by way of the process of acrosome formation. The morphologies of the sperm nucleus type and the acrosome of this species have a curved cylindrical type and cap shape, respectively. The spermatozoon is approximately $48-51{\mu}m$ in length including a curved cylinderical sperm nucleus (about $4.18{\mu}m$ long), an acrosome (about $0.52{\mu}m$ in length) and tail flagellum ($42-45{\mu}m$ long). As some ultrastructural characteristics of the acrosomal vesicle, the peripheral parts of two basal rings show electron opaque part (region), while the apex part of the acrosome shows electron lucent part (region). These charateristics of the sperm belong to the family Veneridae in the subclass Heterodonta, unlike a characteristic of the subclass Pteriomorphia showing all part of the acrosome being composed of electron opaque part (region). Therefore, it is easy to distinguish the families or the subclasses by the acrosome structures. Exceptionally, In particular, a cylinder-like nucleus of the sperm is curved (the angle of the nucleus is about $80^{\circ}$), as seen in some species of Veneridae (range from $0^{\circ}$ to $80^{\circ}$). The number of mitochondria in the midpiece of the sperm of this species are four, as one of common characteristics appeared in most species except for a few species in Veneridae in the subclass Heterodonta. Cross-sectioned axoneme of the sperm tail flagellum shows a 9+2 structure.

• Asian-Australasian Journal of Animal Sciences
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• 제25권5호
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• pp.613-620
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• 2012

Marbling from intramuscular fat is an important trait of meat quality and has an economic benefit for the beef industry. Quantitative trait loci (QTL) fine mapping was performed to identify the marbling trait in 266 Hanwoo steers using a 10K single nucleotide polymorphism panel with the combined linkage and linkage disequilibrium method. As a result, we found nine putative QTL regions for marbling: three on BTA6, two on BTA17, two on BTA22, and two on BTA29. We detected candidate genes for marbling within 1 cM of either side of the putative QTL regions. Additionally, to understand the functions of these candidate genes at the molecular level, we conducted a functional categorization using gene ontology and pathway analyses for those genes involved in lipid metabolism or fat deposition. In these putative QTL regions, we found 95 candidate genes for marbling. Using these candidate genes, we found five genes that had a direct interaction with the candidate genes. We also found SCARB1 as a putative candidate gene for marbling that involves fat deposition related to cholesterol transport.

• KSBB Journal
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• 제24권1호
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• pp.96-100
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• 2009

본 연구에서는 저온에서의 재조합 단백질 생산성 향상을 위하여 저온에서 RNA 샤페론 활성을 지닌다고 알려진 CspA 단백질의 발현이 서로 다른 온도에서 대장균의 성장 및 GFP의 발현 속도에 어떻게 영향을 미치는지를 살펴보았다. $20^{\circ}C$, $25^{\circ}C$, $37^{\circ}C$에서는 세포 성장 및 GFP의 생산이 CspA의 발현에 영향을 받지 않았으나, $15^{\circ}C$에서는 GFP의 총 생산성이 CspA의 동시 발현에 의해 향상되었으며 이는 세포 성장 속도의 향상에 기인함을 확인하였다. 결론적으로 CspA의 발현은 $15^{\circ}C$에서 세포 당 재조합 단백질 생산량의 증가에는 영향을 미치지 않으나, 즉 재조합 단백질의 번역 효율에는 큰 영향을 미치지 않으나, 대장균 성장 속도에 영향을 미치며, 이를 통해 재조합 단백질의 총 생산량 향상을 유도 할 수 있을 것으로 기대된다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.2
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• pp.1062-1065
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• 2004

The importance of display is becoming increasingly important due to the development of information and industry where it leads to diverse and abundant information in today's society. The demand and application range for FPD(Flat Panel Display), specifically represented by LCD(Liquid Crystal Display) and PDP(Plasma Display Panel), have been rapidly growing for its outstanding performance and convenience amongst many other forms of display. The current focus has been on OLED(Organic Light Emitting Diode) in the mobile form, which has just entered into mass production amid the different types of FPD. Many studies are being conducted in regards to device, vacuum evaporation, encapsulation, and drive circuits with the development of device as a matter of the utmost concern. This study develops a new type of light-emitting materials by synthesizing medical polymer organic chitosan and phosphor material CuS. Chitosan itself satisfies the Pool-Frenkel Effect, an I-V specific curve, with a thin film under $20{mu}m$, and demonstrates production possibility for a living body sensors solely with the thin film. Furthermore, it enables production possibility for EML of organic EL device(Emitting Layer) with liquid Green light emitting and Blue light emitting as a result of synthesis with phosphor material.

• Spatial Information Research
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• 제20권1호
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• pp.19-26
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• 2012

기후변화의 원인 중 탄소배출이 가장 큰 비중을 차지하고 있어 탄소배출 감소의 필요성이 전 세계적으로 제기되고 탄소배출을 감소하기 위한 국제적 움직임이 가속화되고 있다. 선진국들은 녹색산업을 신성장동력 산업으로 활용하는 전략을 추진 중이며 탄소저감형도시(low carbon city)에 대한 관심이 높아지고 있다. 현재 우리나라에서 진행되고 있는 U-City 사업에 대하여 U-City 도입 이전 도시와 U-City 도입 도시의 탄소배출량 변화를 분석하여 이산화탄소 저감효과에 대한 분석이 필요하다. 본 연구에서는 U-City 도입 이전과 도입 이후의 이산화탄소 발생량을 비교, 분석하여 U-City 도입에 따른 탄소저감 효과를 정량화하고자 하였다. U-City 도입이전의 도시는 1기 신도시 중에 성남시 분당구와 고양시 일산구를 대상으로 하였으며, U-City 도입이후의 도시로는 화성동탄 U-City를 선정하여 비교한 결과 탄소배출량이 30%정도 줄어든 것으로 결과가 도출되었다.

• ALGAE
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• 제32권4호
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• pp.379-388
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• 2017

In the present study, we enhanced the phenolic content of 70% ethanol extracts of Spirogyra sp. (SPE, $260.47{\pm}5.21$ gallic acid equivalent $[GAE]mg\;g^{-1}$), 2.97 times to $774.24{\pm}2.61GAE\;mg\;g^{-1}$ in the ethyl acetate fraction of SPE (SPEE). SPEE was evaluated for its antiradical activity in online high-performance liquid chromatography-ABTS analysis, and the peaks with the highest antiradical activities were identified as gallic acid derivatives containing gallic acid, methyl gallate, and ethyl gallate. Isolation of ethyl gallate from Spirogyra sp. was performed for the first time in this study. In ultraviolet B (UVB)-irradiated keratinocytes (HaCaT cells), SPEE improved cell viability by 8.22%, and 23.33% and reduced accumulation of cells in the sub-$G_1$ phase by 20.53%, and 32.11% at the concentrations of 50 and $100{\mu}g\;mL^{-1}$, respectively. Furthermore, SPEE (50 and $100{\mu}g\;mL^{-1}$) reduced reactive oxygen species generation in UVB-irradiated zebrafish by 66.67% and 77.78%. This study suggests a protective activity of gallic acid and its derivatives from Spirogyra sp. against UVB-induced stress responses in both in vitro and in vivo models, suggesting a potential use of SPEE in photoprotection.

• 복식
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• 제59권9호
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• pp.146-162
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• 2009

In the current product and fashion design, the 'eco-friendliness' is affecting practically and conceptually on all the sectors of industry and culture. Therefore, this study seeks to examine specific values in the concept of eco-friendly design. The subjects of this paper are studied on the scholarly journals, and are confined to those from 1990, when naturalism and ecology trend started to be in product and fashion, to the moment of search of February 2009. This study used 'Naturalism', 'Green', 'Environment-friendly', 'Eco', 'Sustainable', 'Well-being' and 'Lohas' as key words for the search. Analysis is performed by content analysis and the unit of analysis was based upon the adjectives, nouns and phrases which is related key words in the concept of eco-friendly design. The study realized that there are personal value, environmental value, economic value, and social value in the concept of eco-friendly design. In the result, it is not enough to consider the effect on environment only. Understanding the personal, environmental, economic, and social value from the viewpoint of customers, finding the optimal design factors, and reflecting them in development of product and fashion are necessary to pave the way for advanced eco-friendly design. The results of this paper would help to the future product and fashion development for eco-friendly brands.