• 제목/요약/키워드: receptacle

검색결과 80건 처리시간 0.026초

Artificial seed production and cultivation of Sargassum macrocarpum (Fucales, Phaeophyta)

  • Ko, Shin Ja;Kim, Yoo Kyung;Hong, Seong Wan;Kang, Min Su;Park, Chan Sun;Hwang, Eun Kyoung;Lee, Young Don
    • ALGAE
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    • 제35권2호
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    • pp.123-131
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    • 2020
  • Sargassum macrocarpum is a rich source of anti-inflammatory compounds. Recently, one of the compounds, tuberatolide B, has been reported as a functional anti-inflammatory additive for foods and nutraceuticals. The artificial seeding, growth and maturation of S. macrocarpum were investigated from May 2018 to September 2019. Indoor culture experiments for induction of egg release were conducted at temperatures of 17, 20, 23, and 26℃ and irradiances of 0, 10, 20, 40, and 80 μmol photons m-2 s-1 under 14 : 10 h (L : D) photoperiod. Within a given treatment combination, higher temperatures and irradiance levels favoured the maturation of receptacles in S. macrocarpum. Using artificial temperature and irradiance control, thalli matured one month earlier than thalli in nature. Under natural condition, receptacle formation began in April, and the eggs were released in June and July. The release of eggs from the receptacles was promoted at 17-20℃ and 40-80 μmol photons m-2 s-1, and the fastest growth of germlings occuring at 15-17℃ and 40 μmol photons m-2 s-1. For mature thalli, 300 g wet-weight was sufficient to seed 100 m of seed string. Thalli grew to 10.5 ± 2.6 cm in length at a density of 6.7 ± 3.3 individuals m-1 after 1 year of cultivation, from germination. This study demonstrates that it is possible to cultivate S. macrocarpum for the production of anti-inflammatory products.

한국산 충생자낭균류의 미기록종에 관하여 (Notes on Three Species of the Laboulbeniales (Ascomycotina) Newly Collected from Korea)

  • 이용보;나영희
    • 한국균학회지
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    • 제27권3호통권90호
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    • pp.208-210
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    • 1999
  • 본 연구는 우리나라에서 충생자낭균류의 자원을 발굴하고, 동정하여 새로운 생물자원을 확보하기 위하여 1996년 10월부터 1997년 9월까지 연구한 결과이다. 현재까지 우리나라의 충생자낭균류는 16속 59종이 기록되어 있으며, 본 연구를 통하여 동정된 충생자낭균류의 미기록 3종을 다음과 같이 보고하고자 한다. Laboulbenia anoplogenii Thaxter는 Stenolophys quinquepustulatus Widemann으로부터 발견되었다. 이 균체의 특징은 탁의 4번층의 세포수가 $2{\sim}3$개으로 되어 있으며, 상부를 향하여 돌출하고 있다. Laboulbenia habui Terada는 Chlaenius variicornis Bates에서 채집되었다. 이 종의 특징은 2차 부속지의 기부세포들이 교대로 2열로 배열된 짧은 원통형으로 되어있다. Laboulbenia pallida Thaxter는 Anisodactylus signatus Panzer에서 채집되었다. 이 종은 Harpalus Sp.에서 발견되어 왔지만, Anisodactylus signatus Panzer에서는 처음으로 발견되었다. 이 종의 특징은 자낭각의 정단부가 둥글며, 의부속지는 기부세포에서 가지쳐 있다. 본 연구로 우리나라의 충생자낭균류는 16속 62종이 기록된다.

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Characterization of partially purified 8 kDa antigenic protein of Clonorchis sinensis

  • Chung, Young-Bae;Lee, Me-Jeong;Yang, Hyun-Jong;Chung, Byung-Suk;Lee, Shun-Yu;Choi, Min-Ho;Hong, Sung-Tae
    • Parasites, Hosts and Diseases
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    • 제40권2호
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    • pp.83-88
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    • 2002
  • The 8 kDa antigenic protein of Clonorchis sinensis was partially purified by ammonium sulfate precipitation and subsequently by a column chromatographic steps. The purified protein was separated into 7 and 8 kDa protein bands through SDS-tricine gel electrophoresis, while the protein was fecund to migrate to a 8 kDa band in 7.5-15% SDS-PAGE. The molecular weight of the antigen was estimated to be 110 kDa by Superose 6 HR 10/30 gel filtration. The purified antigen strongly reacted with the human sera of clonorchiasis. The hyperimmune sera of BALB/c mice immunized against the 8 kDa protein were reacted with both the crude extract and the excretory-secretory product of adult worms, but not with the metacercarial extract. Immunohistochemical staining demonstrated that the protein was distributed to the tegument and subtegumental cells and also to the seminal receptacle. The present findings suggest that the 8 kDa protein is a partition of the multicomplek protein originating from various organs of adult C. sinenis, and that it is composed of several 7 and 8 kDa proteins.

캡슐 하단부 구조변경에 따른 압력강하 및 진동특성 (Pressure Drop and Vibration Characteristics of the Capsule with the Modification of Bottom Structures)

  • 최명환;주기남;조만순;김봉구
    • 한국소음진동공학회논문집
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    • 제15권12호
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    • pp.1370-1377
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    • 2005
  • The bottom structure of an instrumented capsule is a part which is joined at the receptacle of the flow tube in the reactor in-core. A geometrical change of the bottom structure has an effect on the pressure drop and the vibration of the capsule. The out-pile test to evaluate the structural integrity of the material capsule called 04M-17U was performed by using a single channel and a half core test loop. From the pressure drop test, the optimized diameter of the cone shape's bottom structure which satisfies HANARO's flow requirement (19.6 kg/s) is 71 mm. The maximum displacement of the capsule measured at the half core test loop is lower than 1.0 mm. From the analysis results, it is found that the test hole will not be interfered with near the flow tubes because its displacement due to the cooling water is very small at 0.072 mm. The fundamental frequency of the capsule under water is 9.64 Hz. It is expected that the resonance between the capsule and the fluid flow due to the cooling water in HANARO's in-core will not occur. Also, the new bottom structure of a solid cone shape with 71 mm in diameter will be applicable to the material and special capsules in the future.

한국산 개똥쑥의 작물학적 특성 (Studies on Major Agronomic Characteristics of Korean Artemisia annua L.)

  • 이정훈;박충범;박춘근;손영득;문성기
    • 한국약용작물학회지
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    • 제18권1호
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    • pp.46-50
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    • 2010
  • In order to development medicinal Artemisia herbs of high quality, Korean A. annua L. were investigated with its ecological and morphological characteristics, and basic statistical data of agronomic characteristics. This species, which is annual herb, is mainly distributed to marginal land, riverside, roadside, grassland. Ecological niche is low species in competition of the others. Its pollination is basically anemogamous, but is frequency pollinated by insects. This species is characterized as tap root, 1~3 pinnate compound leaf of ovate or narrowly ovate, stem is green, erect and solitary. Inflorescence is paniculate, receptacle is not hair. Capitulum, consist of ray floret and disk floret, is subglobose shape. Additionally, this species could be easily discriminated from related Artemisia herbs by the capitulum size. Ray floret is female, disk floret is bisexual. Flowering season is from August to October. Seed is achene unattached hair. Stem length ranged from 179 cm to 225 cm, and stem diameter and number of branch were $17.14\;{\pm}\;1.68\;mm$, $2.43\;{\pm}\;0.51\;mm$, respectively. Length and width of leaf were $14.5\;{\pm}\;0.5\;cm$, $15.0\;{\pm}\;1.0\;cm$, and leaf number of main stem were $48.06\;{\pm}\;10.57\;cm$, respectively. Fresh weight of aerial parts and root were $364.7\;{\pm}\;14.1\;g$, $32.6\;{\pm}\;5.1\;g$, and its dry weight were $136.6\;{\pm}\;10.0\;g$, $14.9\;{\pm}\;2.34\;g$, respectively.

사물 인터넷 기반의 1인 가구를 위한 스마트 콘센트 시스템 (Smart Outlet System for Single-person Household based on IoT (Internet of Things))

  • 김희숙;박병주;조영주
    • 디지털콘텐츠학회 논문지
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    • 제18권5호
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    • pp.895-904
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    • 2017
  • 본 논문에서는 1인 가구를 대상으로 전기 안전, 전기 에너지 소비 관리 그리고 비상시 네트워크를 연결하여 예약된 연락처에 메시지를 전송하는 사물인터넷 기반의 스마트 콘센트 시스템 구축 방식을 제안한다. 제안된 스마트 콘센트 시스템은 서버와 모듈, 어플리케이션, WiFi AP 수신기 사이에 패킷 데이터와 프로토콜을 파싱하여 구현된다. 통신을 위해 구축된 WiFi AP는 콘센트 뿐 만 아니라 가스 차단, 도어락 등에 연결하여 사용하는 것이 가능하다. 또한 제안된 방식은 AC 전류센서(SCT-013)를 통해 받아온 해당 콘센트의 전력량을 실시간으로 수신하여 원격 모니터링 기능을 제공할 수 있다. 스마트 콘센트 시스템은 대기전력 차단 기능과 더불어 전력 사용 자동 분석을 통해 비상시 전력 자동 차단 기능까지 할 수 있을 것으로 기대한다.

면역황금표식법을 이용한 호르텐스극구흡충의 조직내 항원성 부위에 관한 연구 (Ultrastructural Antigenic Localization in the Tissues of Echinostoma hortense Observed by Immunogold Labeling Method)

  • Yoon-Kyung Jo;Yong-Suk Ryang;Kyu-Je Lee;Insik Kim;Jang-Keun Ryu;Mi-Sook Song
    • 대한의생명과학회지
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    • 제5권2호
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    • pp.155-165
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    • 1999
  • 호르텐스극구흡충을 흰쥐에게 경구 감염시키고 4주 후에 성충을 획득하여 고정, 포매 및 절편하여 조직항원 분포 부위를 관찰하였다. 호르텐스극구흡충의 항체는 호르텐스극구흡충 피낭유충을 흰쥐에게 경구 감염시키고 4주 후에 채혈한 혈청과 호르텐스극구흡충 조항원을 면역증강제와 함께 흰쥐에게 근육 주사하여 채혈한 혈청을 이용하였으며, 이 혈청을 반응시켜서 호르텐스극구흡충 조직내의 항원성 분포를 규명하였다. 한편, 면역황금표식법에 의한 미세조직의 항원성 반응 여부는 조직에 표지된 황금입자로 판정하였다. 그 결과 충체 조직에서 황금입자와 강하게 반응하는 미세조직은 표피층의 표지합포체, 난황세포의 구성물질, 유연조직의 분비과립 그리고 배설낭의 구성물질 등에서 반응이 강하게 나타났다. 이상의 결과를 볼 때 호르텐스극구흡충의 항원은 생식세포와 소화분비 및 소화관계통에서 분비 유래되는 것으로 분석되었다.

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캡슐 하단부 구조변경에 따른 압력강하 및 진동특성 (Pressure Drop and Vibration Characteristics of the Capsule with the Modification of Bottom Structures)

  • 최명환;주기남;조만순;이강희;김봉구
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 추계학술대회논문집
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    • pp.782-787
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    • 2005
  • The bottom structure of an instrumented capsule is a part which is joined at the receptacle of the flow tube in the reactor in-core. A geometrical change or the bottom structure has an effect on the pressure drop and the vibration of the capsule. The out-pile test to evaluate the structural Integrity of the material capsule called 04M-l7U was performed by using a single channel and a half core test loop. From the pressure drop test, the optimized diameter of the cone shape's bottom structure which satisfies HANARO's flow requirement (19 6 kg/s) is 71 mm. The maximum displacement of the capsule measured at the half core test loop is lower than 1.0 mm. From the analysis results, it is found that the test hole will not be interfered with near the flow tubes because its displacement due to the cooling water is very small at 0.072 mm. The fundamental frequency of the capsule under water is 9.64 Hz. It is expected that the resonance between the capsule and the fluid flow due to the cooling water in HANARO's In-core will not occur. Also, the new bottom structure of a solid cone shape with 71 mm in diameter will be applicable to the material and special capsules in the future.

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Past and Present Viable Pavilions Remain in Architecture: Envisioning New Directions for a Better Future Research on pavilions within the history of world fairs, from the mid-19th to the 21st Century

  • Shim, Sodahm Suzanne;Lee, Yoonhie;Yoon, Chaeshin
    • Architectural research
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    • 제21권3호
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    • pp.79-90
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    • 2019
  • The ephemeral and temporal nature of pavilions is the underlying motivation that led to the development of this paper. From the beginning of the industrial era through contemporary history, there have been many instances of architects attempting to rethink architectural design in the context of modern social, cultural, and technical imperatives. Today, the leading changes in humanity are accompanied by a revolutionary electronic digital medium. The pavilion has been in an amalgamation of architectural integration since the beginning of human history. World's Fairs/Expos have, since their establishment, served as international presentations of goods and achievements of particular nations. They became a popular stage wherein potential architectural achievements were showcased through the evocative architecture of pavilions. Due to the pavilion's "temporary nature," its coverage includes various perspectives: social, historical, geographical, post-colonial, iconographical, temporal, and ephemeral. It has also served as a receptacle due to its representational value at a given time. The pavilion has offered architectural designers, clients, and visitors a place to use their imaginations. Moreover, the architect's role in creating pavilions cannot be overestimated. Due to fact that they abound in symbolism, contemporary designs, and innovative solutions, pavilions often mirror modern mankind and plan for the next aesthetic revolutions and ideological architectural theories. To understand and appreciate architects' original intentions with their pavilions, this paper focuses on noteworthy pavilions that were created from the beginning of industrialization through the present. It explores and discusses the pavilion's characteristics, highlights the significance of its physical form as generated by a specific theme.

The Effect of Vinegar Fermentation on the Nutritional Quality of Lotus Flower Fermented Product

  • Nam, Mikyung;Chrysta, Maynanda Brigita;Lee, Eunsuk;Choi, Wonsik
    • 한국산업융합학회 논문집
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    • 제22권1호
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    • pp.61-69
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    • 2019
  • All the parts of lotus, including the seed, rhizome, leaf, stalk, petal, anther, pericarp, and fruit receptacle, have been used in traditional medicine system as a health beneficial supplement. However the most usually used from lotus plant is only the root. Therefore in this study, it will be discussed more the utilization of other parts of the lotus, namely the flower of lotus. The petals and stamens of lotus actually are also rich in bioactive components such as flavonoids and alkaloids, are used in the treatment of tissue inflammation, cancer, skin disease, and also for us as antidotes. One of the biotechnological process that can be used to improve the nutritional content, sensory, and also antioxidant activities is fermentation process. The final product desired from the fermentation process in this study is vinegar. The microbial strain powder used is Uinkin fermented powder with three variations of fermentation. The variations given in this study were initial sugar 32%, 24%, and 14% with the same fermentation temperature, $35^{\circ}C$ for 3 months. The results obtained showed that the pH value and sugar content of products during the fermentation process were decreasing during the fermentation process, with total polyphenol content of $283.7{\pm}97.6mg/100g\;QAE$, and total flavonoid content of $3.3{\pm}0.0mg/100g\;QAE$. For the DPPH radical scavenging ability of the fermentation product also increased in a concentration dependent manner, with ORAC activity of the product showed a high activity of $20.7{\pm}0.41{\mu}M$ TE. Therefore, fermentation process can be the one of method for improving the product. The efficiency of lotus flower vinegar fermentation can be reached with an initial sugar condition of 25% (sample B).