• Title/Summary/Keyword: l2시

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두유의 젖산균 생육에 관한 연구

  • 김소자;조홍연;이정치;양한철
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • 1978.04a
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    • pp.96.4-96
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    • 1978
  • 발효유 제조에 있어 skim milk 대체원료로 soy-milk 및 defatted soymilk를 사용하여 명종유산균 (S. thermphilus, L. acidophilus, L. bulgaricus, S. thermophilus+L. acidophilus, S. thermophilus+L. bulgaricus, L. acidophilus+L. bulgaricus) 의 증식 조건을 조사한 결과 soymilk의 균수는 skim milk와 defatted soy milk에 비하여 별 차이가 없었으나 적정산도는 현저히 낮았다. 또한, soymilk 및 defatted soy milk에 2% lactose 첨가시 유산균 증식이 양호하였다.

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Newly Recorded Naturalized Species in Korea, Silene antirrhina L. (Caryophyllaceae) (한국 미기록 귀화식물: 가는끈끈이장구채(석죽과))

  • Bak, Gyu-Jin;Koh, Jae-Kee;Pak, Jae-Hong
    • Korean Journal of Plant Taxonomy
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    • v.41 no.2
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    • pp.171-174
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    • 2011
  • A naturalized species, Silene antirrhina L is newly reported in Korea. S. antirrhina L. was found along the Geumho riverside in Daegu. S. antirrhina L. is similar to S. koreana Kom. and S. armeria L. in that it has dark glutinous areas. S. antirrhina L. can be distinguished from congeneric species by the stamens and styles of its sepal and seed surface which are finely papillate. The Korean name of S. antirrhina L. "Ganeun-Kkunkkunijangguchea" was newly formulated based on the overall characteristics of this thin and small plant and on the Korean name of S. koreana Kom. photos of the habitat and a description and key of characteristics are provided.

Inhibitory Effects of Zerumbone on MCP-1-Induced THP-1 Migration (MCP-1에 의해 유도된 THP-1 유주에 미치는 Zerumbone의 영향)

  • Kim, Sa Hyun;Kim, Si Hyun;Ryu, Sung Ryul;Lee, Pyeongjae;Moon, Cheol
    • Korean Journal of Clinical Laboratory Science
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    • v.50 no.2
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    • pp.177-182
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    • 2018
  • This study examined the effects of zerumbone on monocyte migration. Monocytes are recognized as important mediators of various inflammatory diseases, and the possibility of controlling inflammatory diseases by regulating the monocyte functions, such as activity and mobility, has been reported. MCP-1, which is a chemokine with levels that increase upon inflammation, causes the migration of the monocyte cell line, THP-1. Migration occurred at a concentration of 10 ng/mL MCP-1, and the highest migration occurred at 100 ng/mL and 200 ng/mL. MCP-1-induced THP-1 migration decreased by more than 40% in the presence of zerumbone. The concentration of cAMP, an important secondary messenger of the CCR2 signaling pathway, the MCP-1 receptor, was increased in the culture medium after a zerumbone treatment. The concentrations of cAMP decreased significantly under the MCP-1 treatment condition only. On the other hand, an increase in cAMP was observed when zerumbone and MCP-1 were treated simultaneously. Erk phosphorylation induced by an MCP-1 treatment was also found to decrease with the zerumbone treatment. This study introduces the possibility of controlling inflammatory diseases through the function of zerumbone, which regulates the migration of monocytes.

Characteristics of Stormwater Runoff from Urban areas with Industrial Complex (산업단지의 도시 강우유출수 배출 특성)

  • Jung, Yong-Jun;Kim, Si-Won
    • Journal of Wetlands Research
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    • v.14 no.1
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    • pp.131-137
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    • 2012
  • This study was investigated to characterize the stormwater runoff pollutant materials from the urban area mixed with industrial area. Almost the similar rainfall pattern is shown during the 5 years, and the yearly precipitation was 5.2~6.6 mm. The first flushing effect during the early-stage rainfall-run off was observed in some events. EMC ranges are 19.3~39.9 mg/L for BOD, 45.2~190 mg/L for CODcr, 67.2~351 mg/L for TSS, 3.6~10.3 mg/L for TN, 1.2~2.5 mg/L for TP. Heavy metal are not detected except Zn which is observed at only one event. The particle size was distributed to 10 ${\mu}m$ at the 3% weight volume and the 50% cumulative weight percent was shown at 12 ${\mu}m$.

Plant Regeneration and Effect of Auxin and Cytokinin on Adventitious Shoot Formation from Seedling Explant of Taraxacum platycarpum (민들레 [Taraxacum platycarpum]유식물 절편으로부터 부정아 발생에 미치는 auxin과 cytokinin의 영향 및 식물체 재생)

  • Lee, Mi-Hyun;Yoon, Eui-Soo;Jung, Su-Jin;Bae, Ki-Hwa;Seo, Jin-Wook;Choi, Youg-Eui
    • Journal of Plant Biotechnology
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    • v.29 no.2
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    • pp.111-115
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    • 2002
  • Taraxacum platycarpum has been used as a medicinal plant. We investigated optimal condition for efficient plant regeneration through adventitious shoot formation on medium with various kinds of growth regulators. Adventitious shoot formation was achieved when cytokinin was used alone. Shoot formation was higher on MS medium containing 2 mg/L BAP compared to that with 2 mg/L kinetin and 2 mg/L 2-ip. Among root, hypocotyl and cotyledon, roots were the best explant for the adventitious shoot induction. Adventitious shoot formation from roots declined markedly by the combination of both 0.1 mg/L NAA and 2 mg/L BAP, while shoot formation from cotyledons was stimulated by the same combination. Root formation from the regenerated shoots was achieved on 1/3MS medium containing 0.2 mg/L NAA. Regenerated plantlets was acclimatized and transplanted to the soil, showing 100% survival.

Plant Regeneration from Leaf Segment Culture of Chrysanthemum zawadskii ssp. coreanum (한라구절초 잎절편 배양에 의한 식물체 재분화)

  • 박영철;김성용;한태완
    • Korean Journal of Plant Resources
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    • v.17 no.1
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    • pp.43-47
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    • 2004
  • The effect of plant growth regulators and gelling agents for plant regeneration from leaf segment of Chrysanthemum zawadskii ssp. coreanum was investigated. NAA was more effective than BA for plant regeneration. MS medium supplemented with NAA 1 mg/L was the most effective in plant regeneration. The effect of agar and gelite as gelling agent was compared. Agar(0.8%) was more effective than gelite(0.2%) in plant regeneration. Regenerated shoots was successfully increased by shoot grafting in MS medium supplemented with NAA 0.1 mg/L in vitro, and hardened by shoot grafting in artificial soil mix(Peatmoss : Perlite = 1 : 1).

Establishment of Optimal Fermentation Conditions for Steam-dried Ginseng Berry via Friendly Bacteria and Its Antioxidant Activities (생체친화성 균주에 의한 인삼열매증포 추출물의 최적발효조건 및 항산화활성)

  • Kim, Seung Tae;Kim, Hee Jung;Jang, Su Kil;Lee, Do Ik;Joo, Seong Soo
    • Korean Journal of Food Science and Technology
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    • v.45 no.1
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    • pp.77-83
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    • 2013
  • In this study, we observed optimal conditions and suitable bacteria for the fermentation of steam-dried ginseng berry extracts (SGB) and determined antioxidant effects of the fermented extracts. Five bacteria (Lactobacillus fermentarum, L. plantarum, L. brevis, L. casei, Bacillus subtillis) were examined on their growth activities and viabilities in various culture temperatures ($25-35^{\circ}C$) and concentrations (25-100%). L. plantarum was considered to be the most suitable bacteria for the fermentation in both growth activity and viability. Moreover, the extracts fermented with L. plantarum showed more potent antioxidant efficacy in both 1,1-diphenyl-2-picrylhydrazyl radical and hydroxyl radical scavenging assay. High performance liquid chromatography analysis revealed that fermentation with L. plantarum changed the contents and components of ginsenosides. In conclusion, these data suggest that L. plantarum efficiently ferment SGB and the fermented extracts may have therapeutical values against oxidative stress and be a good candidate in adjuvant therapy where ginsenoside would be the main composition.

Differential semantic processing in Korean and English Word Naming (모국어와 외국어 어휘 산출 시 의미정보처리 과정의 차이)

  • Her, Ju-Young;Koo, Min-Mo;Nam, Ki-Chun
    • Proceedings of the KSPS conference
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    • 2007.05a
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    • pp.180-182
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    • 2007
  • The present study was carried out to investigate how two languages are represented and processed for the late Korean-English bilinguals. To this end, we compared the naming times of Korean-English bilinguals on a series of the picture-word interference tasks. The entire experiment is divided into four parts, each of which required participants to name the pictures in Korean or in English with distractor words visually presented either in Korean or English. The distractor words were semantically related or unrelated to the picture. The results showed that, in different language conditions (L1 naming-L2 distractor, L2 naming - L1 distractor), there was only numerical difference between semantic related and unrelated condition. In same language conditions (L1 naming-L1 distractor, L2 naming-L2 distractor), however, significant semantic interference effect occurred. And, the interference effect was stronger in the L1 distractor condition than in the L2 distractor condition. These results suggest that the semantic processing of L1 and L2 for the late bilinguals are independent each other.

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Perfomance Evaluation of efficent handover Latency Using MIH Services in MIPv4 (MIH를 이용한 효율적인 MIPv4망의 구성에 관한 연구)

  • Kim, Ki-Yong;Jang, Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.75-78
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    • 2007
  • Mobile IP provides hand-held devices with mobility which allows the user to do work over the network. However, handover time due transfer between access routers causes network delays and data loss. L2Trigger Handover expects this handover to take place, and executes L3 handover before L2 handover takes place, thereby reducing overall handover latency, although it still is an issue since handover latency between AR is not completely eliminated in L2 trigger handover. In this paper took into consideration where MIH is used in MIPv4 and using MIH Table when handover is about to occur in MN(Mobile Node), thereby pre-fetching data needed by Handover. In this way, when the handover is estimated, it improves the init time that L2trigger had. Furthermore we can find that we can execute the handover with shorten init time in smaller and narrow overlap length

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Cross Layer Optimization of Vertical Handover for Heterogeneous Wireless Networks (이기종 무선 네트워크간 핸드오버를 위한 교차계층 최적화 방안)

  • Kim, Hak-Soo;Kim, Wee-Youn;Jo, Jae-Ho;Cho, Jin-Sung
    • Proceedings of the Korean Information Science Society Conference
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    • 2008.06d
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    • pp.126-130
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    • 2008
  • Mobile IP는 단말에게 이동성을 제공해 줌으로써 이동하면서도 인터넷에 접속할 수 있게 해준다. 하지만 L2 연결과 L3 연결이 순차적으로 진행되어 핸드오버시 지연과 데이터 로스의 문제가 발생한다. 이러한 핸드오버 과정에서 발생하는 지연과 데이터 로스를 줄이기 위해 L2 트리거를 이용한 Fast Handover 기술이 개발되었지만 Fast Handover 기술 역시 L2 연결과 L3 연결이 독립적으로 진행된다. 본 논문에서는 Mobile IP의 L3 핸드오버 과정과 이기종 네트워크들의 L2 핸드오버 과정을 통합하고 핸드오버 과정을 최적화하여 성능 개선된 핸드오버 방안을 제안하고 성능평가를 통해 우수함을 보인다.

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