• Title/Summary/Keyword: activating

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Motion characteristics along the shape of the activating body of a floating wave energy convertor

  • Kim, Sung-Soo;Lee, Su-Bong;Lee, Soon-Sup;Kang, Dong-Hoon;Lee, Jong-Hyun
    • Journal of Advanced Marine Engineering and Technology
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    • v.40 no.8
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    • pp.704-709
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    • 2016
  • Wave energy generation systems can be divided into oscillating water chamber type, over topping device type and wave activating body type. The wave activating body type converts wave energy to kinetic energy, and the power generation amount increases as the motion of an activating body increases. In this paper, the wave energy convertor consists of a main body, which has an H-shape, and the activating body. These are connected by a bar-type bridge. By the incident wave, when the activating body moves with vertical motion this motion is consequently converted into rotational motion. The twisting moment and angular velocity at a shaft of convertor are calculated according to various conditions of the incident wave and the shape of the activating body. This can be used as a basic idea for determining the design of wave activating body type convertor.

Inhibitory Effects of Herbal Medicines on the Platelet-Activating Factor(PAF) Receptor Binding

  • Kang, Young-Hwa
    • Natural Product Sciences
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    • v.11 no.3
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    • pp.131-135
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    • 2005
  • Methanolic extracts of ninety-five medicinal plants were screened for platelet-activating factor (PAF) receptor binding inhibitory activity using rabbit platelet. Alpinia officinarum, Belamcanda chinensis, Leonurus heterophyllus, Pinus densiflora, Polygonatum sibiricum and Sambucus williamsii showed significant inhibitory effects on the platelet-activating factor (PAF) receptor binding.

Studies on the Resources in the Cultivation of Lentinus edodes -Effects of physiological activating substances among the bed logs- (표고버섯 재배(栽培)에 관(關)한 자원학적(資源學的) 연구(硏究)(I) -생리 활성화 물질의 효과-)

  • Chai, Jung-Ki
    • The Korean Journal of Mycology
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    • v.21 no.3
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    • pp.217-223
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    • 1993
  • The investigation was aimed to reduce the period of bed log through the protection of harmful fungi and to know the effects of physiological activating substances on the yield increase of Lentinus edodes. Mycelial growth was evaluated both the bed logs and physiological activating substances, respectively. I percent extract of Allium cepa and malt as a physiological activating substance was highly effective in mycelial growth of Lentinus edodes. Better effects among the bed logs by the application fo physiological activating substances observed in both Quercus serrata and Carpinus laxiflora. This results suggested that supplement of physiological activating substances to the bed log would be beneficial for the production of Lentinus edodes.

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Inhibitory Effects of Malaysian Medicinal Plants on the Platelet-Activating Factor (PAF) Receptor Binding

  • Jantan, Ibrahim Bin;Kang, Young-Hwa;Suh, Dae-Yeon;Han, Byung-Hoon
    • Natural Product Sciences
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    • v.2 no.2
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    • pp.86-89
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    • 1996
  • Methanolic extracts of 25 species of Malaysian medicinal plants were screened for platelet-activating factor (PAF) receptor binding activity using rabbit platelet. Extracts of Cinnamomum sintoc, Ixonanthes iconsandra, Paederia foetida, Piper aduncum, Premna integrifolia, Ardisia crispa, and Ardisia elliptica showed significant inhibitory effect on the platelet-activating factor (PAF) receptor binding.

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Improved Learning Algorithm with Variable Activating Functions

  • Pak, Ro-Jin
    • Journal of the Korean Data and Information Science Society
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    • v.16 no.4
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    • pp.815-821
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    • 2005
  • Among the various artificial neural networks the backpropagation network (BPN) has become a standard one. One of the components in a neural network is an activating function or a transfer function of which a representative function is a sigmoid. We have discovered that by updating the slope parameter of a sigmoid function simultaneous with the weights could improve performance of a BPN.

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Production of Phagocyte Activating Supernatants by Olive Flounder (Paralichthys olivaceus) Leucocytes Stimulated with Genomic DNA of Escherichia coli

  • Lee Chan Hwei;Kim Dong Soo;Kim Ki Hong
    • Fisheries and Aquatic Sciences
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    • v.5 no.4
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    • pp.258-262
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    • 2002
  • Effects of Escherichia coli genomic DNA on the production of phagocyte activating supernatants by the head kidney leucocytes isolated from olive flounder (Paralichthys olivaceus) were investigated. Phagocyte activating activity of the supernatants was estimated by. measuring reactive oxygen species (ROS) production in target head kidney phagocytes. All supernatants from olive flounder head kidney leucocytes-stimulated with E. coli DNA induced significantly (P<0.01) higher ROS production from target pagocytes than the unstimulated control supernatant. Maximum enhancement of chemiluminescent response was observed $5.0-10.0{\mu}g\;mL^{-1}$ of bacterial DNA while the increment ability was decreased significantly (P<0.01) at the concentration of $20.0{\mu}mL^{-1}$. The results demonstrate that olive flounder head-kidney leucocytes stimulated with bacterial DNA release a soluble phagocyte activating cytokines capable of enhancing the respiratory burst activity from target phagocytes.

Regulation of Immune Responses by the Activating and Inhibitory Myeloid-Associate Immunoglobuline-Like Receptors (MAIR) (CD300)

  • Shibuya, Akira;Nakahashi-Oda, Chigusa;Tahara-Hanaoka, Satoko
    • IMMUNE NETWORK
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    • v.9 no.2
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    • pp.41-45
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    • 2009
  • Activating and inhibitory cell surface receptors play important roles in regulation of immune responses. Recent progress has demonstrated that many inhibitory receptors pair with activating, as well as inhibitory, isoforms, both of whose genes are located in small clusters on a chromosome. We and others identified paired activating and inhibitory immunoglobulin-like receptors, designated myeloid-associated immunoglobulin-like receptors (MAIR) (CD300). MAIR is a multigene family consisting of nine genes on a small segment of mouse chromosome 11. MAIR family receptors are preferentially expressed on myeloid cells, including macrophages, dendritic cells, granulocytes, and bone-marrow-derived cultured mast cells, and a subset of B cells and regulate activation of these cells. Thus, MAIR plays an important role in innate immunity mediated by myeloid cells.

Role of the prophenoloxidase-activating system in the innate immune response and cuticular melanization in the silkworm

  • Kwang Sik, Lee
    • International Journal of Industrial Entomology and Biomaterials
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    • v.45 no.2
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    • pp.43-48
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    • 2022
  • Bombyx mori is a representative industrial insect and is used in silk production. Additionally, it serves as an insect model in molecular studies. To date, various molecular studies on its physiological characteristics, including the innate immune response and cuticular melanization, have been conducted. The melanization, including cuticular melanization, in insects is controlled by the prophenoloxidase-activating system, which is also involved in their innate immune response. In this review, to better understand the molecular mechanisms underlying the prophenoloxidase-activating system in the silkworm, the roles of five biomolecules, namely tyrosine hydroxylase, prophenoloxidase-activating enzyme, phenoloxidase, serine protease homolog, and immulectin, are discussed.

The Effects of Administration of Physiologically Activating Substance on the Log Cultivation of Lentinus edodes (생리활성화물질(生理活性化物質) 투여(投與)가 표고버섯 원목재배(原木栽培)에 미치는 영향(影響))

  • Chai, Jung-Ki;Lee, Kwang-Nam
    • Journal of Korean Society of Forest Science
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    • v.84 no.3
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    • pp.361-368
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    • 1995
  • This study was aimed to reduce the period of bed log through the protection of harmful fungi and to investigate the effects of physiologically activating substance on the yield increase of Lentinus edodes. Extracts of Allium fistulosm, Hordeum vulagare var. hexastichon, Lentinus edodes. Daucus carota var. sativa, and Citrus junos were used as a physiologically activating substances. The degree of mycelial growth tested by color change after Benzene - azo - ${\alpha}$ - naphthylamine. One percent extract of Album fistulosm was most highly effective as a physiologically activating substance on mycelial biomass growth of Lentinus edodes. Best effects of application of physiologically activating substance was observed in Quercus variabilis bed logs. These results suggested that supplement with physiologically activating substance to the bed log would be beneficial for the production of Lentinus edodes.

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A case study on activating of high school student's metacognitive abilities in mathematical problem solving process using guidance material for metacognitive activities (문제해결 과정에서 메타인지적 활동 안내를 통한 고등학생의 메타인지 능력 활성화 가능성 탐색)

  • 이봉주
    • The Mathematical Education
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    • v.43 no.3
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    • pp.217-231
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    • 2004
  • The purpose of this paper is to investigate a new method for activating the metacognitive abilities that play a key role in the Mathematical Problem Solving Process (MPSP). The proposed research question is as follows: Can the MPSP activate metacognitive abilities of high school students in the pencil-and-paper environment using guidance material for metacognitive activities\ulcorner To solve this question, two case studies have been carried out. Two students for the study were selected via informal interview. They voluntarily took part in 13 experimental lectures. The activating paths of their metacognitive abilities in the MPSP were chronically described and analyzed. All the activating processes of the students focusing on the aspects of metacognitive behaviors were analyzed by means of interview, observation, self-report, and activity data. The two high school students participating in the MPSP voluntarily recognized and reflected their deficiencies in metacognitive abilities, and therefore maximized their own performance. They made quite significant progress in the course of activating their metacognitive abilities through voluntary participation and gained greater confidence in the MPSP. Hence they have become good problem solvers. They expressed not only the factors influencing their behavior but also their self-awareness during the metacognitive activities. In the long run, this experiment will increase possibilities for the internalization of the metacognitive process.

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