• 제목/요약/키워드: recent progress

검색결과 1,281건 처리시간 0.03초

A brief review on the recent progress of superconducting nanowire single photon detectors

  • Chong, Yonuk
    • 한국초전도ㆍ저온공학회논문지
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    • 제19권4호
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    • pp.22-25
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    • 2017
  • Superconducting nanowire single photon detectors (SNSPD) have become the most competent photon-counting devices in wide range of wavelengths. Especially in the communication wavelength (infrared), SNSPD has shown unbeatable superior performance compared to the state-of-art semiconductor single photon detectors. The technology has matured enough for the last decade so that several commercial systems are now almost ready for routine use in general optics experiments. Here we summarize briefly the recent progress in this research field, and hope to motivate further research on the improvement of the device and the system. We cover the basic key concepts, device and system performances, remaining issues and possible further research directions of SNSPD.

옥신 반응 SMALL AUXIN UP RNA 유전자의 최근 연구 동향 및 작물 개량을 위한 적용 (Auxin-responsive SMALL AUXIN UP RNA genes : recent research progress and its application for crop improvement)

  • 이상호
    • Journal of Plant Biotechnology
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    • 제40권2호
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    • pp.59-64
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    • 2013
  • Auxin is a key plant hormone which regulates overall plant growth development. A number of researches to investigate auxin signaling identified three major classes of early auxin response genes: AUX/IAA, GH3 and SMALL AUXIN UP RNA (SAUR). Among these genes, in planta functions of SAUR gene family are largely ambiguous, while both AUX/IAA and GH3 genes are analyzed to mediate negative feedback on auxin response. SAUR genes encode small plant-specific proteins. SAUR gene products are highly unstable and transiently expressed in the tissue- and developmental-specific manners in response to auxin and various environmental stimuli. In the decades, molecular and genetic approaches to elucidate in planta functions of SAURs have been hampered by several factors such as the unstable molecular features and functional redundancy among them. However, a series of recent studies focusing on several subgroups of SAUR gene family made significant progress in our understanding of its biochemical and physiological functions. These works suggest that many SAUR proteins mainly regulate auxin-related cell expansion and auxin transport. In this review, the recent progress in SAUR research and prospects for crop improvement through its genetic manipulation are discussed.

친환경 페로브스카이트 태양전지 최신 기술 동향 (Recent Research Progress on Eco-Friendly Perovskite Solar Cells)

  • 유형렬;최종민
    • 전기화학회지
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    • 제22권3호
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    • pp.104-111
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    • 2019
  • 금속 할로겐 페로브스카이트 (perovskite)는 우수한 전기적, 광학적 특성으로 인해 차세대 태양전지의 핵심 소재로 큰 주목을 받고 있다. 페로브스카이트 태양전지는 등장 이후 전례 없는 단기간 효율 향상을 보이며 현재 24% 이상의 인증된 광전 변환 효율을 달성하였지만, 대부분의 고성능 페로브스카이트 태양전지는 유독성 납 (Pb)을 기반으로 한 페로브스카이트를 사용한 것으로, 향후 상용화를 위해서는 납을 쓰지 않는 친환경 페로브스카이트 개발이 필수적이다. 본 글에서는 비납 페로브스카이트 물질 및 연구 동향에 대해서 소개하고자 한다.

Recent Progress of Structural Biology of tRNA Processing and Modification

  • Nakanishi, Kotaro;Nureki, Osamu
    • Molecules and Cells
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    • 제19권2호
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    • pp.157-166
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    • 2005
  • Transfer RNA (tRNA) is a key molecule to decode the genetic information on mRNA to amino aicds (protein), in a ribosome. For tRNA to fulfill its adopter function, tRNA should be processed into the standard length, and be post-transcriptionally modified. This modification step is essential for the tRNA to maintain the canonical L-shaped structure, which is required for the decoding function of tRNA. Otherwise, it has recently been proposed that modification procedure itself contributes to the RNA (re)folding, where the modification enzymes function as a kind of RNA chaperones. Recent genome analyses and post-genome (proteomics and transcriptomics) analyses have identified genes involved in the tRNA processings and modifications. Furthermore, post-genomic structural analysis has elucidated the structural basis for the tRNA maturation mechanism. In this paper, the recent progress of the structural biology of the tRNA processing and modification is reviewed.

IPS-TFT-LCDs Technology Trends

  • Tajima, Zenzo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.15-18
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    • 2004
  • Recent progress of the in-plane switching (IPS) TFT-LCD technologies is reviewed. We call the improved new technology 'advanced super IPS TFT-LCD(AS-IPS)'. After suppressing the viewing angle dependency of essential display characteristics, recent brightness, viewing angle and motion picture quality has been highly improved. The stage is now introducing it into consumer information appliance for higher display performances, by which we could open a large size digital LCD TVs application.

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Recent trend of chemical studies of fungicide in China

  • Jiang, Mingliang
    • 농약과학회지
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    • 제6권1호
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    • pp.1-8
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    • 2002
  • Recent progress of several kinds of compounds which have been synthesized or isolated from natural fungi for screening or conducting test as agricultural fungicides as well as some formulations for wood stain and decay control have been reviewed in this paper in China. Comments were pointed for Chinas further research and development of fungicides as well as pesticides.

Recent Progress in Low Cost Dual-Select-Diode AMLCD Technology

  • Boer, Willem Den;Smith, G. Scott
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.873-877
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    • 2005
  • Recent developments in Dual Select Diode (DSD) AMLCD technology are described. They include a novel array design and drive method with shared select lines, which leads to higher aperture ratio and a further reduction of module cost. A Color-On-Array DSD process and pixel layout compatible with In-Plane-Switching is also proposed.

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RECENT PROGRESS IN STRING INFLATIONARY COSMOLOGY

  • REY Soo-JONG
    • 천문학회지
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    • 제29권spc1호
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    • pp.11-14
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    • 1996
  • Super-inflation driven by dilaton/moduli kinetic energy is naturally realized in compactified string theory. Discussed are selected topics of recent development in string inflationary cosmology: kinematics of super-inflation, graceful exit triggered by quantum back-reaction, and classical and quantum power spectra of density and metric perturbations.

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Non-Newtonian fluid mechanics for polymeric liquids: A status report

  • Leal, L.Gary;Oberhauser, James P.
    • Korea-Australia Rheology Journal
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    • 제12권1호
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    • pp.1-25
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    • 2000
  • In this paper, we review recent progress in the development of constitutive models for both dilute and entangled polymeric liquids. The status of recent applications of these models for fluid dynamics predictions is then discussed, as well as possible future research directions.

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