• Title/Summary/Keyword: new green

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Preparation and EPR Characteristics of $ZnGa_2O_4$ : Mn Phosphor

  • 정하균;박도순;박윤창
    • Bulletin of the Korean Chemical Society
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    • v.19 no.12
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    • pp.1320-1325
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    • 1998
  • ZnGa2O4: Mn phosphors were prepared by a new chemical process, and their photoluminescence and electron paramagnetic resonance characteristics were investigated. The chemical method showed a low temperature formation of phosphors and a rod-type shape of particles. The strong ultraviolet emission was observed in the undoped ZnGa2O4 phosphor, while strong green emission in the Mn2+-activated ZnGa2O4 phosphor. The green emission intensity of the phosphor prepared by the chemical method was much stronger than that prepared by the conventional method. This difference with preparation methods was interpreted as due to the difference in the distribution of Mn2+ in the host lattice. From EPR results, it was explained that the line intensity of the undoped ZnGa2O4 is associated with the electrical conductivity of this material and the concentration quenching of green luminescence of ZnGa2O4: Mn at higher Mn2+ concentration is attributed to the coupling by exchange interaction between Mn2+ ions.

DEVELOPMENT OF A FRONT END PLANNING TOOL FOR SUSTAINABILITY

  • Sang-Hoon Lee;Spencer Howard;Lingguang Song;Kyungrai Kim
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.506-513
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    • 2009
  • The Construction Industry Institute (CII) developed the Project Definition Rating Index (PDRI), as a part of their Front End Planning best practices, which helps project managers assess and measure project scope definition risk elements. U.S. Green Building Council are seeing the benefits of sustainable building and Leadership in Energy and Environmental Design certification by positively impacting life cycle costs, building marketability, and organizational productivity. However, there have been no efforts to integrate these two planning tools in construction industry. By applying a supplemental tool which combines the PDRI with the LEED rating system, construction industry can develop and implement a tailored instrument that leads to total project success in sustainability. The objective of this research is to assemble a new front end planning mechanism for green buildings by incorporating the current PDRI and LEED systems.

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Carbon control and environmental policy in the U.K. : A reappraisal of strategies for the green state (영국의 탄소규제와 환경정책 : 녹색국가 전략의 재평가)

  • Choi, Byung-Doo;Shin, Hae-Ran
    • Journal of the Korean association of regional geographers
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    • v.19 no.2
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    • pp.301-323
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    • 2013
  • The government of the UK since the 1990, especially under the new Labour Party, has pursued sustainable development or carbon control as a core strategy for its national development. The seemingly prominent environmental policy for 'greening the government' of the UK as well as considerable achievements in energy and environment indices have attracted much attentions of policy makers and researchers for the 'low carbon green growth' in Korea. This paper tries to see the character of carbon control and environmental policy in the UK not merely as the integrating or mainstreaming policy but a new strategy for national development, that is, for the 'ecologically modernized' state, eco-state, or green state. It defines the environmental policy for carbon control in the UK as the strategy for the green state which has provided it as a principal guide for integrating national policies as a whole, and which has pursued it through market-dependent neoliberal measures. From this point of view, this paper introduces the development process of carbon control and environmental policy mainly under the new Labour Party government in the UK, and gives a reappraisal of both its policy and of energy-environment indices.

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Property of New SEGLESS that is Segregation-free Steel Powder Mixture for Warm Compaction

  • Nishida, Satoshi;Furuta, Satoshi
    • Proceedings of the Korean Powder Metallurgy Institute Conference
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    • 2006.09b
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    • pp.731-732
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    • 2006
  • Recently warm compaction techniques are focused on and commercialization of one high-density compaction process in the P/M industry. Another development is a new SEGLESS using a developed lubricant that reduces ejection force at room temperature compaction. It is possible to achieve high-density by reducing lubricant amount. In this paper we confirmed that green density was $7.35g/cm^3$ at 686MPa of compaction pressure when the new SEGLESS was applied to relatively lower temperature warm compaction process, such as $80^{\circ}C$.

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Graphis lueckingiana, a New Species from Cameroon

  • Joshi, Santosh;Upreti, Dalip K.;Hur, Jae-Seoun
    • The Korean Journal of Mycology
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    • v.46 no.4
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    • pp.491-494
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    • 2018
  • A new species of Graphis is described from Cameroon, Africa. The new taxon is distinguished by a greyish-green, glossy, uneven, and continuous thallus. Further, it possesses stellately branched lirellae, and its entire labia are covered almost completely with thick thalline margin. It also has a completely carbonized proper exciple, which is considerably thick at the base, one-spored asci, and muriform hyaline to yellowish ascospores.

New Yellow Single Chrysanthemum 'My Sun' for Pot Plant (분화용 국화 노랑색 홑꽃 'My Sun' 육성)

  • Jung, Yun-Kyung;Lim, Jae-Wook;Lee, Sang-Deok
    • Horticultural Science & Technology
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    • v.30 no.3
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    • pp.325-328
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    • 2012
  • A new Dendranthema grandiflourm 'My Sun' was developed at Gyeonggi-do Agricultural Research & Extension Services (GARES), Korea in 2009. 'My Sun' was initially derived from the cross in 2005 between 'Omega Time Orange', a potted chrysanthemum cultivar with orange single type, and 'Tasman', a potted chrysanthemum cultivar with white single type in 2005. The cultivar has single type flowers with yellow petals. Trial and evaluation was conducted from 2006 to 2009 for the selection of this variety, including a shading culture in spring and a retarding culture in winter. The flowering time of 'My Sun' was October 13th, and year-round flowering is possible by shading or lighting treatment. The diameter of flower is 21.0 mm. Numbers of flowers per stem and petals per flower are 34.4 and 20.4, respectively. Its leaf color was green (Green Group 137A) and plant height was 13.3 cm. Days to flowering under the short day treatment is about 42 in spring, and numbers of branch per plant was 3.4 ea in the winter. This cultivar was resistance to white rust and consumer's preference of new pot-mum is high level than control.

Development of O/D Based Mobile Emission Estimation Model (기종점 기반의 도로이동오염원 배출량 추정모형)

  • Lee, Kyu Jin;Choi, Keechoo;Ryu, Sikyun;Baek, Seung Kirl
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.32 no.2D
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    • pp.103-110
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    • 2012
  • This study presents O/D based emission estimation model and methodology under cold- and hot-start conditions. Contrasting with existing link-based model, new model is able to estimate cold-start emissions with actual traffic characteristics. The results of the case study with new model show similar amount of emission with existing model under hot-start conditions, but five times much more than existing model under cold-start conditions. The annual social benefit estimated by this model is 56.2 hundred million won, which is 48% higher than the result from existing model. It means current green transportation policies are undervalued in terms of air quality improvement. Therefore, New model is expected to improve the objectivity of air quality evaluation results regarding green transportation policies and be applied in various transportation-environment policies.

Development of New Hybrid Cultivar 'Semil' in Zoysiagrass (한국잔디 신품종 '세밀(Semil)' 개발)

  • Choi, Joon Soo;Yang, Geun Mo
    • Weed & Turfgrass Science
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    • v.2 no.2
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    • pp.198-201
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    • 2013
  • This study was carried out to develope new zoysiagrass cultivar Semil' (Registration no. 1749). Artificial crossing between the collected lines of typical Z. matrella, NM1 (collected in South Korea) and the different ecotype of Z. matrella, ASm (collected in South Korea) was made to develop a F1 hybrid plant (NM1 ${\times}$ ASm). Among the 30 progenies, (NM1 ${\times}$ ASm)-1 (Semil) showed superior performance in density rating. 'Semil' showed genetically light green color, with narrow leaf width ($2.7{\pm}0.12mm$), and low plant height ($10.3{\pm}3.7cm$), Length to lowest leaf blade of this cultivar was $1.8{\pm}0.15cm$, which may allow low mowing height upto 12 mm.

Generation of a recombinant rabies virus expressing green fluorescent protein for a virus neutralization antibody assay

  • Yang, Dong-Kun;Kim, Ha-Hyun;Park, Yu-Ri;Yoo, Jae Young;Park, Yeseul;Park, Jungwon;Hyun, Bang-Hun
    • Journal of Veterinary Science
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    • v.22 no.4
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    • pp.56.1-56.10
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    • 2021
  • Background: Fluorescent antibody virus neutralization (FAVN) test is a standard assay for quantifying rabies virus-neutralizing antibody (VNA) in serum. However, a safer rabies virus (RABV) should be used in the FAVN assay. There is a need for a new method that is economical and time-saving by eliminating the immunostaining step. Objectives: We aimed to improve the traditional FAVN method by rescuing and characterizing a new recombinant RABV expressing green fluorescent protein (GFP). Methods: A new recombinant RABV expressing GFP designated as ERAGS-GFP was rescued using a reverse genetic system. Immuno-fluorescence assay, peroxidase-linked assay, electron microscopy and reverse transcription polymerase chain reaction were performed to confirm the recombinant ERAGS-GFP virus as a RABV expressing the GFP gene. The safety of ERAGS-GFP was evaluated in 4-week-old mice. The rabies VNA titers were measured and compared with conventional FAVN and FAVN-GFP tests using VERO cells. Results: The virus propagated in VERO cells was confirmed as RABV expressing GFP. The ERAGS-GFP showed the highest titer (108.0 TCID50/mL) in VERO cells at 5 days post-inoculation, and GFP expression persisted until passage 30. The body weight of 4-week-old mice inoculated intracranially with ERAGS-GFP continued to increase and the survival rate was 100%. In 62 dog sera, the FAVN-GFP result was significantly correlated with that of conventional FAVN (r = 0.95). Conclusions: We constructed ERAGS-GFP, which could replace the challenge virus standard-11 strain used in FAVN test.