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      • KCI등재
      • KCI등재후보

        A Path-coefficient analysis and genetic correlation between important traits in pea (pisum sativum L.)

        B. H. Hong(洪丙憙),Y. N. Song(宋隆男),H. M. Cho(趙賢黙) 한국육종학회 1984 한국육종학회지 Vol.16 No.1

        Twenty cultivars of pea(Pisum sativum L.) were grown in the field of Kangwon National University. They were evaluated for maturity and other characters. The relationships between values measured were analysed by the method of path coefficient. Genotypic correlation coefficients were larger than phenotypic ones. The first flowering node number, flowering time and plant height were highly correlated with maturing time. Genotypic correlation between maturing date and the first flower node number was highly significant, 0.5893 which was made up largely of a direct effect of 1.5844. A highly significant correlation was likewise obtained for the comparison between maturing date and flowering time, being influenced mainly by the indirect effect via first flower node number. The association between earliness and plant height was moderately significant.

      • KCI등재
      • KCI등재후보

        日長條件 따른 小麥의 稈長變異 및 遺傳에 關한 硏究

        C.H. CHO(曺章煥),B.H. HONG(洪丙憙),J.H. NAM(南重鉉),B.H. CHANG(張炳浩) 한국육종학회 1980 한국육종학회지 Vol.12 No.2

        To investigate the genetic and ecological variation of culm length of wheat the different daylength has been applied to major wheat varieties planted at greenhouse in Suweon. Standard errors of culm length were larger at 12 and 8hrs day length than that of 24hrs. Variations of culm length due to different photoperiod were more remarkable in medium and short culms than that of long one. Number of genes controlling culm length of variety Robin #2 was more or less 2 genes. This study has been conducted to investigate the genetic and ecological variation of wheat calm length measured from those plants grown at greenhouse. The results are as following. 1. The calm length of the winter wheat was highest under 12hrs daylength, while that of the spring wheat was highest under 8hrs daylength. Standard errors of culm length was larger under 12 and 8hrs daylength than that of 24hrs daylength condition. 2. The culm length was shortest under the 24hrs daylength compare to under 12 or 8hrs while it was highest under 12hrs. Short and medium culm length varieties were photo insensitive but those of long culm length were photo sensitive. 3. There are many types of varietal differences for the culm length under the daylength conditions. Highest culm length group under 12 and 8hrs contition was classified. The semi-dwarf varieties that did not change their plant heights under 8 and 12hrs conditions were Hira, Yecora Resel, Sava, Sturdy, Saric 70, Sekidorisai 66 etc. 4. Varietal difference of culm elongation was noticed between 8hrs and 12hrs daylength condition. On the basis of the evidences obtained from this experiment, it may be concluded that the genetic studies related to culm length should be carried out under the most favorable conditions for calm elongation. 5. Correlation coefficients estimated between culm length and heading or maturity were negative but insignificant, but their correlations were highly significant between photo treatments. 6. Calm length of F₁ was intermediate to the range of F₂ population which seems to be distributed normally. In this regard the gene involved with calm length seemingly inherit additively. Statistical analysis for the involved genes for calm length suggested 2 genes for the semidwarf variety Robin #2 was more or less 2 genes.

      • KCI등재후보

        Physiological Factors associated with Heading Time of Wheat, and Their Genetic Nature and Selection Efficiency

        CHO C.H(曺章煥),B.K. KIM(金鳳九),B.H. HONG(洪丙憙),J.H. NAM(南重鉉),K.W. CHUNG(鄭吉雄) 한국육종학회 1981 한국육종학회지 Vol.13 No.1

        This study was subjected to clarify the physiological factors associated with heading and maturing of wheat and their genetic studies, relationship among heading time and involved factors as well as selection efficiency to serve for improvement of early maturing and high yielding wheat varieties. The results obtained to the present time were summarized as followings. 1. Physiological factors associated with heading time of wheat can be represented by growth habit, photowresponses, especially heading response to high temperature-shortday response, earliness in narrow sense and winter hardiness. In the areas where cold damage is negligible three factors except winter hardiness would be the major factors associated with heading time. Determination of growth habit was possible by growing materials at high temperature and longday condition with different vernalization periods. Photo-responses could be determined under high temperature-shortday and earliness in narrow sense under high temperature-longday. 2. Spring growth habit is controlled by four major genes Vrn₁, Vrn₂, Vrn₃ and Vrn₄. These genes are dominant over winter growth habit and Vrnl is found to be epistasis to the other Vrn genes. Winter growth habit is recovered. 3. Photo-insensitivity and earliness in narrow sense are controlled by one or two major genes in some crosses while polygenic inheritance are also observed in some. crosses. 4. Winter hardiness is quantitatively inherited, thus controlled by many genes 5. Studies on the earliness with segregating material planted in the field proved that this trait is determined by one or two major gene(s). However, in some crosses it was found to be polygenic. 6. Field heading time and photo-responses, earliness in narrow sense and growth habit were highly correlated each other but winter hardiness exhibited negative relations with field heading time and involved physiological factors. Thus, winter susceptibility was a disadvantageous trait for improvement of early maturing varieties. 7. Heritabilities estimated for heading time was considerably high regardless growing conditions. However, highest heritability was estimated for the materials grown under high temperature and shortday condition. 8. In relationship between heading time and grain yield, early maturing lines frequently damaged, particularly young spike primordia, by low spring temperature and increased sterile spikelet it will be desired to recombine some degree of winter growth habit, low temperature adaptability and photo-insensitivity. High grain weight and grain plumpness should also be considered in selection procedure for improving early maturing wheat varieties.

      • 주기적인 패턴 유리 기판을 사용한 비정질 실리콘 박막 태양전지의 효율 향상에 관한 연구

        손찬희(C. H. Son),강정욱,김경민(K. M. Kim),김재호(J. H. Kim),홍진(J. Hong),홍병희(B. H. Hong),조광섭(G. S. Cho),권기청(G. C. Kwon) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11

        We fabricated a-Si:H thin-film solar cell using the two-dimensional(2D) periodic patterned glass substrate. The use of a 2D periodic texture rather than a randomly texture at surface of TCO can result in higher short circuit current densities(Jsc). In order to analyze the optical effect of patterning glasses, ray-tracing simulations were performed. Also, p-i-n cells were deposited on patterning glasses as substrate by PECVD. UV-Vis spectroscopy, I-V were carried out for the optoelectronic characterization. The anti-reflective and light-trapping performance of patterning glass substrate was investigated by a comparison of experimental results with numerical simulations.

      • KCI등재

        차세대 리소그래피 빛샘 발생을 위한 플라스마 집속장치의 아르곤 아크 플라스마의 방출 스펙트럼 진단

        홍영준,문민욱,이수범,오필용,송기백,홍병희,서윤호,이원주,신희명,최은하,Hong, Y.J.,Moon, M.W.,Lee, S.B.,Oh, P.Y.,Song, K.B.,Hong, B.H.,Seo, Y.H.,Yi, W.J.,Shin, H.M.,Choi, E.H. 한국진공학회 2006 Applied Science and Convergence Technology Vol.15 No.6

        차세대 리소그래피 기술인 극자외선(EUV : Extreme Ultraviolet) 빛샘 연구의 기초단계로써, 동축타입의 전극구조가 설치된 다이오드 챔버를 통해 Ar 플라스마를 생성하였으며, 방출 분광기술(emission spectroscopy)를 이용하여 방출된 가시광선 영역의 빛을 조사하였다. 장치의 입력 전압을 0.5kV씩 변화를 주어 $2\sim3.5kV$까지 인가를 했으며 이극챔버의 최적 압력인 330mTorr 일 때 각 전압에 따른 방출 분광선 데이터를 얻었다. 이때 Ar I과 Ar II 방출선을 관측하였으며 국소적인 열적평형 (LTE ; Local Thermodynamic Equilibrium) 상태의 가정 하에 볼츠만 도표(Boltzmann plot)와 사하(Saha) 방정식을 이용해 Ar I 및 Ar II의 전자온도와 이온 밀도를 각각 계산하였다. 각 입력전압에 대해 이온밀도는 Ar I과 Ar II에서 각각 $\sim10^{15}/cc$ 및 $\sim10^{13}/cc$의 값으로 계산되었다. We have generated the argon plasma in the diode chamber based on the established coaxial electrode type and investigated the emitted visible light for emission spectroscopy. We applied various voltages $2\sim3.5kV$ to the device by 0.5kV, and obtained the emission spectrum data for the focused plasma in the diode chamber on the argon pressure of 330 mTorr. The Ar I and Ar II emission line are observed. The electron temperature and ion density have been measured by the Boltzmann plot and Saha equation from assumption of local thermodynamic equilibrium (LTE) The Ar I and Ar II ion densities have been calculated to be $\sim10^{15}/cc\;and\;~10^{13}/cc$, respectively, from Saha equation.

      • KCI등재

        교류형 플라즈마 평판 표시장치(AC-PDP)에서 ITO 전극 구조에 따른 Xe 여기종의 시공간 밀도 분포 연구

        조석호,홍영준,손창길,한용규,정용환,권기청,홍병희,조광섭,최은하,Cho, S.H.,Hong, Y.J.,Son, C.G.,Han, Y.G.,Jeong, Y.H.,Gwon, G.C.,Hong, B.H.,Cho, G.S.,Choi, E.H. 한국진공학회 2009 Applied Science and Convergence Technology Vol.18 No.1

        We have measured the spatiotemporal behavior for the density of excited Xe atoms in the $1s_5$ metastable states by laser absorption spectroscopy in accordance with various shapes of ITO electrode. The maximum density of excited Xe atoms in the Is5 state in a discharge cell for fish-boned, T-shaped and squared ITO electrodes has been measured to be $3.01{\times}10^{13}\;cm^{-3}$, $2.66{\times}10^{13}\;cm^{-3}$ and $2.06{\times}10^{13}\;cm^{-3}$, respectively. Throughout this experiment, we could understand the influence of the shapes of ITO electrode of micro discharge cell on the high efficiency of AC-PDPs. 3전극 면방전형 AC-PDP에서 발광효율을 높이기 위한 방법으로 새로운 구조의 ITO전극을 제안하였다. 기존에 사용하고 있는 사각형(square), T 형태의 ITO 전극구조와 새롭게 설계한 물고기뼈 형태(fish-boned type) ITO 전극 구조의 시험패널을 제작하였다. 레이저 흡수 분광법(Laser absorption spectroscopy)을 이용하여 각 ITO 전극 구조에 따라 Xe 여기종의 밀도분포를 측정하고, 고속 ICCD(Image Intensified Charge-Coupled Diode) 카메라를 이용하여 각각의 전극에 따른 $750\;nm\;{\sim}\;900\;nm$ 파장의 방전모습을 확인하였다. 시험패널 상판의 x, f 전극에 220V의 사각펄스(square pulse)를 교대로 인가하여 방전시켰다. 사각형, T 그리고 물고기뼈 형태의 ITO 전극 구조에서 $X_e$ 여기종 밀도는 각각 $2.06{\times}10^{13}\;cm^{-3}$, $2.66{\times}10^{-3}\;cm^{-3}$와 $3.01{\times}10^{13}\;cm^{-3}$으로 물고기뼈 형태에서 가장 높게 측정되었다.

      • KCI등재후보

        韓國에 있어서 小麥 半矮性遺傳子의 起湲, 傳播 및 利用에 關한 硏究

        C.H. CHO(曺章煥),B.H. HONG(洪丙憙),M.W. PARK(朴文雄),J.W. SHIM(沈載昱),B.K. KIM(金鳳九) 한국육종학회 1980 한국육종학회지 Vol.12 No.1

        Origin, dessemination and utilization of semi-dwarf genes of wheat were studied. Begining of wheat cultivation in Korea was about 3000 years ago and varietal name was given around in 1400 A.D. Original population carrying semi-dwarf genes was found to be Korean native Anzunbaengimil or Nanjangmil which was introduced to Jappan in the period of 1904~1905 and presumably renamed as Daruma. Genetic resemblance of these two populations was discussed. Number of pure-line selections were made from this population and Norin 10 was released in Japan by utilizing this semi-dwarf genes. Korea also released Suweon 92 and Seuseun 27 using same gene sources. Contribution of this semi-dwarf genes to the increase of world wheat production was reviewed. Semi-dwarfing genes of wheat which extended a great contribution for increasing wheat production in the world were investigated on their origin, dissemination, and utilization and the results were summarized as followings. 1. Begining of wheat cultivation in Korea was postulated to be about 3000 years ago considering the history of wheat cultivation of China and Japan. 2. Wheat varietal name was recorded as early as in 1482. However, Nongsajiksul published in 1400 has a brief description about wheat (cultural) methods. Therefore, it is not difficult to presume that varietal name was available to that time. 3. Original population where the semi-dwarf plants were selected were Anzunbaengimil or Nanjangmil which were distributed all where in Korea in the period of 1500~1941. This population had great variation in plant height, presumably a mixture with individuals carrying Rht₁, Rht₂ or Rht₁ Rht₂. 4. Dissemination of Anzunbaengimil to Japan was possiblly made during the period of Imjin Japanese Invasion to Korea, or by the Japanese Agronomists who were dispatched to Korea for investigation of agriculture and land productivity from 1901 to 1905. 5. Anzunbaengimil(Crippled wheat) may be named as Daruma(crippled wheat) after introduction to Japan or renamed as Daruma after pure-line selections were made. Considering such traits as growth habit, glume color, plant, height grain color and plant type it was concluded that Daruma is orginated from Auzunbaengimil population. 6. In Japan, semi-dwarf gene from Daruma population have been utilized extensively and released Norm 10 which became an important world wide breeding material. Seuseun 27 and Suweon 92, the Korean semi-dwarfs, were also improved using same dwarf gene source as Norin 10. 7. Dwarf genes from Daruma population, have contributed for improving several early maturing and high yielding wheat varieties in Korea such as Suweon 85, Chokwang, Suweon 215, 216, 219 and 220. 8. Norin l0/Brfvor 14 was the dwarf gene source for improving Cains and Nugains at Washington State, USA and CIMMYT semi-dwarfs. Coullee, a hard white winter wheat, was improved using Suweon 92, and Seuseun 27 was utilized for improving Tam Wheat and Holley wheats at Texas A&M, USA.

      • KCI등재후보

        Isogenic Lines을 利用한 小麥品種의 春播性遺伝子 分析 第Ⅲ報 主要育成品種의 春播性遺伝子 究明

        J. H. Nam(南重鉉),C. H. Cho(曺章煥),Y. A. Chae(蔡永岩),B. H. Hong(洪丙憙) 한국육종학회 1984 한국육종학회지 Vol.16 No.1

        This experiment was conducted to clarify the genetic nature for vernalization gene using isogenic tester lines with Vrn1, Vrn2, Vsn3 and Vrn4 respectjvely, and for lateness gene in the major Korean wheat cultivars, which are used in breeding program for early maturity. Wheat cultivars, Suweon 210, Cheonggemil and Chugoku 81 were determined to carry two dominant Vrn genes such as ; Suweon 210 had Vrn 3 and Vrn 4 ; Cheonggemil had Vrn 2 and Vrn 4 ; Chugoku 81 had Vrn1 and Vrn4, Milyang 11 had one Vrn4 gene and Geurumil did not have any Vrn gene at all. Olmil appeared to possess no-known Vrn genes so far identified but has an additional Vrn for vernalization. This new gene may be different from the known Vrn1, Vrn2, Vrn3 and Vrn4. A recessive gene for lateness (P) which is independent from Vrn genes was identified in Suweon 210, Cheonggemil, Milyang 11, Chugoku 81 and Olmil. This new gene was determined to prolong to days of flag leaf emergence which required 20-day vernalization period.

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