• 제목/요약/키워드: New host

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High-throughput Gene Expression Analysis to Investigate Host-pathogen Interaction in Avian Coccidiosis

  • Lillehoj Hyun, S.
    • 한국가금학회지
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    • 제34권1호
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    • pp.77-83
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    • 2007
  • Poultry products including meat and eggs constitute a major protein source in the American diet and disease-causing pathogens represent major challenges to the poultry industry. More than 95% of pathogens enter the host through the mucosal surfaces of the respiratory, digestive and reproductive tracts and over the past few decades, the two main mechanisms used to control diseases have been the use of vaccines and antibiotics. However, in the poultry industry, there are mounting concerns over the ability of current vaccines to adequately protect against emerging hyper-virulent strains of pathogens and a lack of suitable, cost effective adjuvants. Thorough investigation of the immunogenetic responses involved in host-pathogen interactions will lead to the development of new and effective strategies for improving poultry health, food safety and the economic viability of the US poultry industry. In this paper, I describe the development of immunogenomic and proteomic tools to fundamentally determine and characterize the immunological mechanisms of the avian host to economically significant mucosal pathogens such as Eimeria. Recent completion of poultry genome sequencing and the development of several tissue-specific cDNA libraries in chickens are facilitating the rapid application of functional immunogenomics in the poultry disease research. Furthermore, research involving functional genomics, immunology and bioinformatics is providing novel insights into the processes of disease and immunity to microbial pathogens at mucosal surfaces. In this presentation, a new strategy of global gene expression using avian macrophage (AMM) to characterize the multiple pathways related to the variable immune responses of the host to Eimeria is described. This functional immunogenomics approach will increase current understanding of how mucosal immunity to infectious agents operates, and how it may be enhanced to enable the rational development of new and effective strategies against coccidiosis and other mucosal pathogens.

한국산(韓國産) 충생균류(蟲生菌類)에 대한 연구(硏究) (I) (Studies on the Laboulbeniomycetes in Korea (I))

  • 이용보;이지열
    • 한국균학회지
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    • 제9권4호
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    • pp.177-192
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    • 1981
  • 한국산(韓國産) 충생균류(蟲生菌類)에 관(關)한 연구(硏究)가 저자(著者)들에 의해서 채집(採集)된 많은 곤충(昆蟲)들 중에서 여러 종(種)들이 발견(發見)되었다. 이 논문(論文)에서 Carabidae, Endomychidae, Staphyinidae과(科)들의 곤충(昆蟲)들 중에서 발견(發見)된 이 균류(菌類)의 4속(屬) 7종(種)은 한국에서 처음으로 기록(記錄)된 것이며, 그것들은 다음과 같다. Dichomyces biformis Thax. (host: Philonthus micanticolis), D. furcifer Thax. (host: Philonthus sp.), Enathromyces indicus Thax. (host: Pheropsophus jessoensis), Laboulbenia exigua Thax. (host: Chlaenius varricornis Bates.), L. flagellata Peyr. (host: Anisodactylus punctatipennis Moraw.), L. vularis Peyr. (Host: Bembidion oxyglimma, Bates. B. thermarum Mostchulsky.) Rickia ancylopi Thax. (Ancylopus melanocephalus Oliv.)이다. 연구(硏究)된 모든 표본(漂本)들은 조선대학교사범대학생물학(朝鮮大學校師範大學生物學) 연구실(硏究室)에 보관되어 있다.

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새로운 Spiro[fluorene-benzofluore]계 청색 호스트 물질의 유기전계발광 특성 (Electroluminescence Properties of New Spiro(fluorene-benzofluore)-Type Blue Host Materials)

  • 전영민;이현석;이칠원;김준우;장지근;공명선
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2008년도 춘계학술대회 및 기술 세미나 논문집 디스플레이 광소자
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    • pp.29-30
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    • 2008
  • New spiro-type host materials, 5'-phenylnaphthyl-spiro[fluorene-7,9'-benzofluorene](BH-lPN) and 5',6-bis(phenylnaphthyl)-spiro[fluorene-7,9'-benzofluorene](BH-6PN) were designed and successfully prepared by the Suzki reaction. The EL characteristics of BH-1PN as blue host material doped with blue dopant materials, BD-1 were evaluated and compared with the existing host MADN:dopant BD-1 system. The structure of the device is ITO/DNTPD/NPB/Host:5% dopant/Alq3/Al-LiF. The device obtained from BH-lPN doped with BD-1 showed a good color purity and efficiency, on the other hand luminance and current-density characteristics are worse than that of MADN doped with BD-1.

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Verification of aecial host ranges of four Gymnosporangium species based on artificial inoculation.

  • Yun, Hye-Young;Lee, Seung-Kyu;Lee, Kyung-Joon
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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    • pp.134.1-134
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    • 2003
  • Aecial host ranges of four Gymnosporangium species causing cedar-apple rust diseases, G. asiaticum, G. cornutum, 5. japonicum and G. yamadae, were investigated through artificial inoculation. Thirteen species of nine genera among Rosaceous plants, which have been reported as social hosts in Korea, were inoculated with fresh teliospores spores in early days of May of 2000 and of 2001, respectively. In the results, we re-confirmed that there was highly specific relationship between the rust species and aecial hosts and report new aecial hosts of four Gymnosporangium species. Teliospores of G. cornutum collected from Juniperus rigida successively produced spermogonia and aecia only on Sorbus alntifolia, the first report on host alteration of G. cornutum in Korea. Positive responses by teliospores of G. japonicum from J. chinenis of Suwon and from J. chinenis var. horizontalis of Jeju island were obtained only on P. villosa. Crataegus pinnatifida was confirmed as a new aecial host of G. viatium. Until this time, G. ymadae was believed to have Malus as the aecial host. However, teliospores of G. yamadae collected from J. chinensis var. kaizuka successively formed spermogonia and aecia on the leaves of Chaenomeles lagenaria, C. sinensis, Pyrus pyrtifolia var, culta, P. ussuriensis, Malus pumila and M. sileboldii. The date for maturation of spermogonia and aecia, and symptom development varied according to the rust fungi and aecial host plants, respectively.

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Interesting Species of the Laboulbeniales from Upo Swamp

  • Lee, Yong-Bo;Kim, Kyoung-Tag;Lim, Chae-Kyu
    • Mycobiology
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    • 제30권3호
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    • pp.128-132
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    • 2002
  • Eight species belonging to two genera of the Laboulbeniales, parasitic on the family Carabidae and Staphylinidae of the order Coleoptera, were collected from Upo natural swamp in 1996-2001. They are as follows; Laboulbenia anoplogenii parasitic on Platynus daimio, L. cristata on Paederus parallelus, L. egens on Tachys laetifica, L. flagellata on Platynus daimio, L. pedicellata on Bembidion morawitzi, L. philonthi on Philonthus wuesthoffi, L. stenolophi on Acupalpus inornatus and Philonthus longicornis, and Peyritschiella biformis on Philonthus micaticollis. Among these species, the genus Platynus as the host of L. anoplogenii and the genus Acupalpus as the host of L. stenolophi are new to science. Bembidion morawitzi as the host of Laboulbenia pedicellata and Philonthus micanticollis as the host of Peyritschiella biformis are new to Korea.

A New Approch for Catalyst Optimization: Host/Guest Complexes of Chiral Bisphosphine Bearing Imidazolidinone and Their Application in Rh-Catalyzed Asymmetric Hydrogenation

  • Park, Jung-Hwan;Shin, Hyun-Ik;Park, Doo-Han;Lee, Sang-Gi
    • Bulletin of the Korean Chemical Society
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    • 제31권3호
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    • pp.635-638
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    • 2010
  • As a new strategy for the optimization of a chiral catalyst, the catalytic activity of the host-guest complexes of chiral bisphosphine bearing imidazolidinone was investigated in Rh-catalyzed asymmetric hydrogenation of enamide. Marginal enhancement in enantioselectivity was observed and the nature of interaction between host-guest was experimentally elucidated.

풍력 실증단지를 위한 분산 형 모니터링 시스템 개발 (A Development of Modular Monitoring System for Wind Turbine Test Site)

  • 이정완;유능수;남윤수;조병하
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2005년도 춘계학술대회
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    • pp.9-12
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    • 2005
  • In this paper. we offer a new monitoring system that controls all of the windfar. it can also apply use general wind turbine systems and real meteorological tower. We propose a hierarchical releiable monitoring system connected by wireless communication channels between monitoring host computer and modular slave measuring subsystems. Our system has two hierarchical subsystems: slave measuring systems, and supervisory host computer. We design and implement that the slave measuring subsystems is placed in meteorological tower and wind turbines, and the supervisory host computer in safety zone, The micro-controller in slave measuring system is duplicated using cold-standby method for reliability. The host computer and slave system constructs a feedback system, with wireless communication channel between them. For monitoring and command function, the supervisory computer is implemented with a Personal Computer using graphic user interface. Consequently. we can get a reliable but economic system.

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장수허리노린재(Anoplocnemis dallasi)의 발육 (Development of the Leaf-Footed Bug, Anoplocnemis dallasi (Hemiptera: Coreidae))

  • Park, Sang Ock
    • The Korean Journal of Ecology
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    • 제18권4호
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    • pp.463-470
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    • 1995
  • Anoplocnemis dallasi Kiritchencho is a sap-sucker which feeds on tips of amorpha fruticosa Linne in Korea. A. Dallasi had one generation a year and overwintered as the young adult stage. Most overwintered survivors emerged in early-mid May to late May. Known host plants were reviewed, and new host records were added. Females mainly laid eggs in linear single chain masses on leaves of Miscanthus sinensis var. purpurascens. Nymphs (except the non-feeding first instars) fed on young shoots. First instar nymphs clustered on leaves or shoots where they hatched, and, if disturbed, reformed aggregations soon. The second to the fifth instar nymphs migrate to the upper part of the shoot and congreagate on a partly expanded leaf. New adults firstly appeared in late August, remained on A.fruticosa, host plant, and fed on until mid October. The duration and survivorship curve, in laboratory rearing, of the egg and each nymphal stadium was determined.

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The study of new host materials for solution-processed green organic electrophosphorescence

  • Jung, Sung-Hyun;Lee, Ho-Jae;Kim, Young-Hoon;Kim, Hyung-Sun;Yu, Eun-Sun;Chae, Mi-Young;Chang, Tu-Won
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.454-457
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    • 2008
  • We report the syntheses, photophysical properties and device performances of solution processible host material for green-phosphorescent OLEDs. The butterfly-shaped new host materials with nonconjugated linkage of carbazole and fluorene moieties have large triple energy band gap around 2.8 eV. All of the EL devices exhibited turn-on voltages in the range of 4.8-5.0 V. GH-4 exhibited the best performance with a maximum current efficiency and power efficiency of 21.1 cd/A and 7.9 lm/W.

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Nutritional Modulation of Resistance and Resilience to Gastrointestinal Nematode Infection - A Review

  • Walkden-Brown, Stephen W.;Kahn, Lewis P.
    • Asian-Australasian Journal of Animal Sciences
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    • 제15권6호
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    • pp.912-924
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    • 2002
  • Disease susceptibility is linked to nutritional status for a wide range of human and animal diseases. Nutritional status can influence both resistance (ability to resist the pathogen) and resilience (ability to tolerate or ameliorate the effects of the pathogen). This review focuses on the nutritional modulation of gastro-intestinal nematode infection in domestic ruminants, primarily sheep. It highlights the duality of the adverse consequences of infection on host nutritional status and the adverse consequences of poor host nutritional status on resistance to infection. Central to both phenomena is the complex, gut-based immune response to gastrointestinal nematode infection. The potential for strategic nutritional supplementation to enhance host resistance and resilience is reviewed together with recent findings on responses to increased ME supply, and long term effects on host immunity of short term protein supplementation.