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임용우(Y. W. Rim),김기용(K. Y. Kim),김맹중(M. J. Kim),성병렬(B. R. Sung),임영철(Y. C. Lim),정의수(E. S. Chung),신홍균(H. K. Shin),김용선(Y. S. Kim) 한국잡초학회·한국잔디학회 2003 Weed & Turfgrass Science Vol.17 No.2,3
2001년 수집된 한국잔디 133계통들 중에서 우수한 계통들을 선발하기위하여 밀도(품질),<br/> 피복성, 녹색기간, 내병성, 출수유무(종자수) 등의 주요특성과 그 외 생육특성들이 조사되었다. 생육특성이 우수한 6계통이 선발되었으며 그 결과를 요약하면 다음과 같다.<br/> 수집된 133계통들 중에서 가장 녹색기간이긴 계통은 J01067으로 11월초까지 녹색도를 유지하였다. J01106 및 J01129 계통들은 엽폭이 각각 1.5mm 및 2mm 정도로 매우 좁으며, 밀도가 높고, 피복성도 좋은 것으로 나타났으며, 내병성도 강하였다. J01122 계통은 들잔디 계통들 중에서 유일하게 내병성이 강한 계통으로 선발되었다. J01128 계통은 엽폭이 3.2mm로 중엽에 속하였으며, 대비품종인 Sunburst 와 비슷하였다. 이 계통의 경우도J01106, J01129 계통들과 마찬가지로 밀도가 높고 내병성이 강한 것으로 나타났다.<br/> 수집된 133계통들의 형태적 분류를 위하여 5가지의 생육특성을 사용하여 크게 세가지 군집<br/> 으로 분류하였으며, 그 중에서 대비품종으로 사용된 6품종들과 선발된 우수 6계통의 분류는<br/> 다음과 같다. 제 1군집에 속하는 품종 및 계통은 Belare, Meyer, 안양중지(Anyang-jungji), J01067, J01112 등이 포함되었으며, 제 2군집으로는 S-94, J01105가 포함되었고, 제 3군집에는 Sunburst, 건희(Konhee), J01106, J01128, J01129 등이 포함되었다. Growth characteristics such as density(quality), covering speed, green period, disease resistance, heading existence(number of seeds) and other characteristics were examined for selection of superior lines among the 133 zoysiagrass lines collected in 2001. Six superior lines were selected and the results were summarized as follows.<br/> Superior line, J01067 was longest for green period among the 133 zoysiagrasses and stayed green until the beginning of November. Leaf width of J01106 and J01129 lines was very narrow as 1.5㎜ and 2㎜, respectively and superior for density(quality), covering speed and disease resistance. J01122 line was selected for strongest disease resistance among the lines of Zoysia japonica. Leaf width of J01128 was 3.2㎜ showing midium type and similar to standard cultivar, Sunburst. This line also showed higher density and strong disease resistance like J01106 and J01129.<br/> Five growth characteristics for morphological classification of 133 zoysiagrass lines<br/> was used and divided into 3 cluster groups. Of 133 lines, 6 standard cultivars and 6 superior lines were classified as follows. First cluster group contained Belare, Meyer, Anyang-jungji, J01067, J01122, and second group contained S-94 and J01105, and third group contained Sunburst, Konhee, J01106, J01128 and J01129.<br/> <br/>
Linear Accelerator를 이용한 Stereotactic Radiosurgery
정상섭,윤도흠,오성훈,김선호,서창옥,추성실,노준규,김동익,서정호 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.6
A Modified irradiation technique utilizing a linear accelerator for radiation surgery within the brain was performed in 4 patients. Three of them had brain tumors and one small arteriovenous malformation in midbrain. A Hitchcock stereotactic apparatus and a 10 MeV linear accelerator have been adapted and special computer programs for dosimetry were obtained and studied experimentally with a phantom model. Stereotactic radiosurgery is a valuable tool in the treatment of inoperable, deep seated intracranial lesions, the major advantage being high efficacy and smoothness of the procedure, as well as short hospitalization times.
Ku band용 초전도 마이크로스트립 안테나의 제작 및 특성 해석
정동철,이중근,김민기,박성진,황종선,한병성 전북대학교 공업기술연구소 1998 工學硏究 Vol.30 No.-
In this paper, a comparative study between superconducting microstrip antennas and gold antennas is reported in terms of the return loss, the characteristic impedance, efficiency and other various characteristics. HTS thin films used in this work were fabricated on YBa_2Cu_3O_7-x(YBCO)/MgO substrate. Superconducting microstrip antennas used in this work is that the feed line was directly inset a microstrip transmission line into 50 Ω region of the radiating patch. Measurements from HTS antennas and gold antennas showed that usable antennas could be made by using this architecture.
Chung, Woo Jin,Simmonds, Adam G.,Griebel, Jared J.,Kim, Eui Tae,Suh, Hyo Seon,Shim, In‐,Bo,Glass, Richard S.,Loy, Douglas A.,Theato, Patrick,Sung, Yung‐,Eun,Char, Kookheon,Pyun, Jeffrey WILEY‐VCH Verlag 2011 Angewandte Chemie Vol.123 No.48
<P><B><I>Der Einsatz von elementarem Schwefel</I></B> als Reaktionsmedium für die Herstellung von Goldnanopartikeln und vulkanisierten Nanokompositen wird in der Zuschrift von J. Pyun et al. auf Seite 11 611 ff. beschrieben. Flüssiger Schwefel dient in diesem System als Lösungsmittel, Reduktionsmittel und Stabilisator für die Herstellung von Goldkolloiden. Potenziell nutzbarer elementarer Schwefel fällt in riesigen Mengen beim Raffinieren von Erdöl an.</P>
김재호,성장현,황용길,정종희 대한금속재료학회(대한금속학회) 1979 대한금속·재료학회지 Vol.17 No.6
輝水鉛鑛과 輝蒼鉛鑛의 混合黃化鑛을 酸化焙燒하여 얻은 燒鑛을 소오다焙燒함에 의해 몰리브덴을 浸出하기 위한 硏究를 하였다. 混合黃化鑛의 酸化焙燒溫度와 酸化焙燒鑛의 소오다焙燒溫度 및 이들이 어떠한 化合物을 이루는가를 알기위하여 熱分析과 X-線回折分析을 한 結果는 다음과 같다. 酸化焙燒鑛의 소오다焙燒溫度範圍는 500∼700℃가 適當하였으며 이들 酸化焙燒鑛은 γ-Bi₂O₃, MoO₃및 Bi₂MoO_6로 存在하였다. 소오다焙燒結果는 苛性소오다가 소오다灰보다 浸出率이 8% 以上 良好하였으며 700℃에서 實收率이 93%에 달했다. 또 浸出殘渣는 γ-Bi₂O₃, Pb₂O₃및 Bi₂MoO_6 등이 濃縮되었다. A study on the leaching of the molybdenite from the soda roasted ore obtained by the oxidizing roasting of the mixtures of molybdenite and bismuthinite has been made. To determine the oxidizing roasting temperature of mixed sulphide ore and the soda roast ing temperature of oxidizing roasted ore, and also to identify those compounds, the differential thermal analysis and X-ray diffraction analysis have been performed. The results obtained are as follows. The suitable soda roasting temperature of oxidizing roasted ore was in the range from 500℃ to 700℃ and the oxidizing roasted ore has been found to be composed of γ-Bi₂O₃, MoO₃and Bi₂MoO_6. The leaching rate of the soda roasted ore mixed with caustic soda has shown to be greater by more than 8% as comparted to that of the soda roasted ore mixed with the soda ash. The recovery of soda roasted ore mixed with caustic soda has been determined to be 93% at the soda roasting temperature of 700℃. The concentrated leaching residues have been found consisting of γ-Bi₂O₃and Bi₂MoO_6.
톱밥 발효사료 및 분말어유의 첨가사료가 돈육의 선도에 미치는 영향
이정일,정명섭,박구부,박범영,박태선,황보종,김진형,성필남 한국축산학회 1998 한국축산학회지 Vol.40 No.1
This study was conducted to investigate the influence feeding fermented sawdust and powdered sardin oil on meat quality of pork. The pigs were randomly assigned to one of four treatments: a), control (normal feed); b), T1 (normal feed and fermented sawdust 30%); c), T2 (normal feed and sardin powder oil 10%); d), T3 (normal feed, fermented sawdust 30%, sardin powder oil 10% and limited amino acid 30%) from live weight 30 ㎏ to 110 ㎏ and slaughtered. The samples were stored at 0 ± 1℃. The shelf life was determined for on the days of 2, 4, 6, 8 and 15. The results obtained were summarized as follows: The thiobarbituric acid reaction substance(TBARS) values of all the treatments were increased with the storage periods (P$lt;0.05). T1 had lower TBARS value than the other treatments until the 8th day, there were no significant differences among treatments at the 15th day. There were no significant differences among volatile basic nitrogen (VBN) of the treatments with the storage periods. The peroxide value of all the treatments was decreased with days of the storage (P$lt;0.05), but was increased again after 8th day. That of T1 was significantly lower than that of others at the 15th day. The TBARS of all the treatments increased with days of the storage(P$lt;0.05), and they were not significantly different each others. There were no significant differences among VBN of treatments with the storage periods. The peroxide values of all the treatments were decreased with the storage periods(P$lt;0.05), but was increased again after 8th day. That of T1 was significantly lower than those of the others at the 15th day.
Some Inequalities in the Space of Fuzzy Numbers.
Young Jun Chung,Myeong Whan Kim,Sang Yeol J00 강원대학교 기초과학연구소 2001 기초과학연구 Vol.12 No.-
We establish useful inequalities with respect to the metric which generates the Skorokhod topology on the space of fuzzy numbers in R.