• 제목/요약/키워드: Sukang

검색결과 16건 처리시간 0.027초

내한 내수발아성 제면용 밀 신품종 "수강밀" (A New Wheat Variety, "Sukang" with Good Noodle Quality, Resistant to Winter Hardiness and Pre-harvest Sprouting)

  • 박철수;허화영;강문석;김홍식;박형호;박종철;강천식;김학신;정영근;박기훈
    • 한국육종학회지
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    • 제41권1호
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    • pp.44-50
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    • 2009
  • 국립식량과학원에서 내재해성이 강한 국수용 밀 품종 육성을 목적으로 1994년도에 수원266호를 모본으로 하고 아사가제를 부본으로 인공교배 하여 SW94134 조합을 육성하였다. 경기도 연천에서 집단재배 후 계통을 전개하여 초형과 수형이 양호하고 내한성이 강한 계통인 SW94134-B-9-6-1-3-4-3을 '04$\sim$05년도 2년간 생산력검정을 거쳐 "익산312호"로 계통명을 부여하고,) 2006년부터 3개년 동안 지역적응시험을 실시한 결과 제면 특성이 우수하고 수발아저항성이면서 도복에 강하고 농업형질이 우수하여 2008년 농작물 직무육성 신품종선정심의회에서 "수강밀"로 명명하고 전국의 전작 및 답리작 지역의 농가에 보급하게 되었다. 그 특성을 요약하면 아래와 같다. 1. 수강밀의 출수기와 성숙기는 각각 4월 29일과 6월 8일로 금강밀과 비슷하고, 간장과 수장은 각각 90 cm와 8.1 cm로 금강밀보다 약간 길다. 2. 수강밀의 파성은 III 형이고, 수발아 저항성이 강한 내수 발아성 품종이며, 내한성도 금강밀보다 강하지만, 흰가루병과 붉은곰팡이병은 금강밀과 비슷한 감수성이다. 3. 수강밀의 제분율은 금강밀보다 약간 낮고 단백질 함량과 회분 함량이 높아 밀가루색이 어둡지만 단백질 질적 특성은 국수용에 적합하다. 4. 수강밀의 리터중은 금강밀과 비슷하지만 천립중이 낮아 금강밀보다 약간 소립이며, 지역적응성 시험에서 전작 수량은 5.34 MT/ha, 답리작 수량은 4.72 MT/ha로 금강밀보다 각각 4%와 1% 적었다.

자궁탈(子宮脫) 환자 치험 3례 (A Clinical Study on Patients with Hysterocele)

  • 서부일;윤정미;차언명
    • 대한본초학회지
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    • 제23권1호
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    • pp.127-130
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    • 2008
  • The hysterocele means the descent state of uterus than a normal position. We had medical treatments 3 patients with hysterocele (grade 1, 2 or 3) by invigorating qi and tonifying the kidney. And we had significant effects on patients with hysterocele grade 1, 2 by Soeuminbojungikgitang and Gamibojungikgitang. But we didn't cure a patient with hysterocele grade 3.

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Off-road 엔진에서 WGT와 VGT장착에 따른 효율 및 특성 비교 (Compare Efficiency and Characteristics according to the WGT and VGT Application on the Off-road Engines)

  • 신재식;강정호;하형수;정학섭;표수강
    • 한국연소학회지
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    • 제21권4호
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    • pp.1-5
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    • 2016
  • The aim of this study is to compare the effectiveness of turbo chargers on engines for off-road use when combined with WGT and VGT technologies. The effectiveness of turbo chargers was measured and performance was compared using a functional model. Exhaust characteristics were compared using WGT and VGT technologies through a gas analyzer. Results showed VGT technology was more effective at high RPM compared to WGT technology. When it came to maximising turbo performance, VGT was more effective than WGT in every test. WGT and VGT produced similar exhaust NOx levels, whereas the VGT was more effective on the PM.

Large-Scale Graphene Production Techniques for Practical Applications

  • Bae, Sukang;Lee, Seoung-Ki;Park, Min
    • Applied Science and Convergence Technology
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    • 제27권5호
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    • pp.79-85
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    • 2018
  • Many studies have been conducted on large-scale graphene synthesis by chemical vapor deposition. Furthermore, numerous researchers have attempted to develop processes that can continuously fabricate uniform and high-quality graphene. To compete with other types of carbon materials (carbon black, carbon fiber, carbon nanotubes, and so on), various factors, such as price, mass manufacturing capability, and quality, are crucial. Thus, in this study, we examine various large-scale graphene production methods focusing on cost competitiveness and productivity improvements for applications in various fields.

Ultra-Clean Patterned Transfer of Single-Layer Graphene by Recyclable Pressure Sensitive Adhesive Films

  • Kim, Sang Jin;Lee, Bora;Choi, Yong Seok;Kim, Philip;Hone, James;Hong, Byung Hee;Bae, Sukang
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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    • pp.301.1-301.1
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    • 2016
  • We report an ultraclean, cost-effective, and easily scalable method of transferring and patterning large-area graphene using pressure sensitive adhesive films (PSAFs) at room temperature. This simple transfer is enabled by the difference in wettability and adhesion energy of graphene with respect to PSAF and a target substrate. The PSAF transferred graphene is found to be free from residues, and shows excellent charge carrier mobility as high as ${\sim}17,700cm^2/V{\cdot}s$ with less doping compared to the graphene transferred by thermal release tape (TRT) or poly(methyl methacrylate) (PMMA) as well as good uniformity over large areas. In addition, the sheet resistance of graphene transferred by recycled PSAF does not change considerably up to 4 times, which would be advantageous for more cost-effective and environmentally friendly production of large-area graphene films for practical applications.

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Classification of 31 Korean Wheat (Triticum aestivum L.) Cultivars Based on the Chemical Compositions

  • Choi, Induck;Kang, Chon-Sik;Lee, Choon-Kee;Kim, Sun-Lim
    • Preventive Nutrition and Food Science
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    • 제21권4호
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    • pp.393-397
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    • 2016
  • Whole grain wheat flour (WGWF) is the entire grain (bran, endosperm, and germ) milled to make flour. The WGWF of 31 Korean wheat (Triticum aestivum L.) cultivars were analyzed for the chemical compositions, and classified into groups by hierarchical cluster analysis (HCL). The average composition values showed a substantial variation among wheat varieties due to different wheat varieties. Wheat cv. Shinmichal1 (waxy wheat) had the highest ash, lipid, and total dietary fiber contents of 1.76, 3.14, and 15.49 g/100 g, respectively. Using HCL efficiently classified wheat cultivars into 7 clusters. Namhae, Sukang, Gobun, and Joeun contained higher protein values (12.88%) and dietary fiber (13.74 %). Regarding multi-trait crop breeding, the variation in chemical compositions found between the clusters might be attributed to wheat genotypes, which was an important factor in accumulating those chemicals in wheat grains. Thus, once wheat cultivars with agronomic characteristics were identified, those properties might be included in the breeding process to develop a new variety of wheat with the trait.

Off-road 엔진의 EGR율에 따른 촉매코팅 DPF의 자연재생율 예측 (Predicting the Oxidation Amount in the Catalyzed DPF according to the EGR Rate for the Off-road Engine)

  • 신재식;강정호;하형수;정학섭;표수강
    • 한국연소학회지
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    • 제21권3호
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    • pp.32-38
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    • 2016
  • This paper aims to predict oxidation amounts of catalyst and heat produced through passive regeneration on DPF according to different EGR rates and loads of off-road engines. Soot oxidation model and parameter assumption model were used for the test. Engine data were measureed with 25%, 50% and 75% of 1600 RPM loads and with 0% and 30% of EGR rates in order to estimate parameters. Oxygen levels calculated on the DPF downstream and oxygen levels measured were compared through all of the experimental conditions for validating the model. Oxidation rates on DPF according to different EGR rates and oxygen levels on the DPF downstream were estimateed successfully, which can be applied for off-road vehicles.

Off-road용 디젤엔진에서의 VGT 및 EGR 적용에 따른 엔진 배기 및 연비 특성 평가 (An Evaluation of Emission Characteristics and Fuel Consumption on the Off-road Diesel Engine using VGT and EGR)

  • 하형수;신재식;정학섭;표수강;강정호
    • 한국연소학회지
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    • 제21권2호
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    • pp.1-6
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    • 2016
  • To meet the Tier-4 emission standard, a variety of combustion technology in the field of off-road engine has been applied in conjunction with the engine after treatment technology. In this study, as the basis study for applying VGT and HPL EGR to 3.6 L CRDi engine, exhaust gas characteristics and fuel economy characteristics are confirmed in accordance with VGT and EGR operating conditions. Consequently, in the EGR applicable conditions, 60% VGT vane duty condition was confirmed that the trade-off characteristics between NOx and smoke are advantageous. In addition, in view of BSFC, VGT vane duty is considered desirable to control at around 50%.

Long-term Air Stability of Small Molecules passivated-Graphene Field Effect Transistors

  • Shin, Dong Heon;Kim, Yoon Jeong;Kim, Sang Jin;Moon, Byung Joon;Oh, Yelin;Ahn, Seokhoon;Bae, Sukang
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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    • pp.237.1-237.1
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    • 2016
  • Electrical properties of graphene-based field effect transistors (G-FETs) can be degraded in ambient conditions owing to physisorbed oxygen or water molecules on the graphene surface. Passivation technique is one of a fascinating strategy for fabrication of G-FETs, which allows to sustain electrical properties of graphene in the long term without disrupting its inherent properties: transparency, flexibility and thinness. Ironically, despite its importance in producing high performance graphene devices, this method has been much less studied compared to patterning or device fabrication processes. Here we report a novel surface passivation method by using atomically thin self-assembled alkane layers such as C18- NH2, C18-Br and C36 to prevent unintentional doping effects that can suppress the degradation of electrical properties. In each passivated device, we observe a shift in charge neutral point to near zero gate voltage and it maintains the device performance for 1 year. In addition, the fabricated PG-FETs on a plastic substrate with ion-gel gate dielectrics exhibit not only mechanical flexibility but also long-term stability in ambient conditions. Therefore, we believe that these highly transparent and ultra-thin passivation layers can become a promising candidate in a wide range of graphene based electronic applications.

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Improved Photovoltaic Performance of Inverted Polymer Solar Cells using Multi-functional Quantum-dots Monolayer

  • Moon, Byung Joon;Lee, Kyu Seung;Kim, Sang Jin;Shin, Dong Heon;Oh, Yelin;Lee, Sanghyun;Kim, Tae-Wook;Park, Min;Son, Dong Ick;Bae, Sukang
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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    • pp.400.1-400.1
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    • 2016
  • Interfacial engineering approaches as an efficient strategy for improving the power conversion efficiencies (PCEs) of inverted polymer solar cells (iPSCs) has attracted considerable attention. Recently, polymer surface modifiers, such as poly(ethyleneimine) (PEI) and polyethylenimine ethoxylated (PEIE), were introduced to produce low WF electrodes and were reported to have good electron selectivity for inverted polymer solar cells (iPSCs) without an n-type metal oxide layer. To obtain more efficient solar cells, quantum dots (QDs) are used as effective sensitizers across a broad spectral range from visible to near IR. Additionally, they have the ability to efficiently generate multiple excitons from a single photon via a process called carrier multiplication (CM) or multiple exciton generation (MEG). However, in general, it is very difficult to prepare a bilayer structure with an organic layer and a QD interlayer through a solution process, because most solvents can dissolve and destroy the organic layer and QD interlayer. To present a more effective strategy for surpassing the limitations of traditional methods, we studied and fabricated the highly efficient iPSCs with mono-layered QDs as an effective multi-functional layer, to enhance the quantum yield caused by various effects of QDs monolayer. The mono-layered QDs play the multi-functional role as surface modifier, sub-photosensitizer and electron transport layer. Using this effective approach, we achieve the highest conversion efficiency of ~10.3% resulting from improved interfacial properties and efficient charge transfer, which is verified by various analysis tools.

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