干拓地 草地造成을 爲한 導入濠州品種의 適應性 調査에 關한 硏究(第Ⅱ報)

權純夔,金用國 충남대학교 농업과학연구소 1977 農業技術硏究報告 Vol.4 No.1

To select some salt tolerant pasture species for grassland establishment on the west coastal saline land in Korea, this work was carried out from March to October in 1976 with 5 pasture seeds mainly were introduced from Australia. On the soil salt content was 0.4%, all seeds germination were failure, but all species were survived on the 0.2% salt content land. The yield of forage were much better from Kikuyu grass and Pearl millet but poor from other species. The Meadow grass could be used for protect soil erosion by lot of tillers. By the result from this experiment, only Kikuyu grass and Pearl millet were possible to use for forage crops. But to continue this work, it is suggested to introduced more effective species such like Saltwater couch, Saltshore ryegrass, Puccinella, Salt bush, Blue buch, Samphire and so on.

소형 트럭용 CNG/가솔린 겸용 엔진 개발과 성능 분석

권오운,김재수,박용국,김성준 江原大學校 産業技術硏究所 2006 産業技術硏究 Vol.26 No.B

A diesel truck of 1 ton is re-powered by a gasoline engine and the fuelling system of gasoline engine is modified to gasoline/CNG bi-fuel system. The engine characteristics such as fuel economy and power are evaluated by driving test, sloping test and dynamometer. The driving test prove the driving cost is saved by 55% and the maximum speed is raised by 13%, which is mainly due to the higher calorific value of CNG. The sloping test is done on thc road of which slope is 15%. The truck shows the mean velocity of 88km/h, which means that are-powered truck is working fine. The BHP are measurcd by dynamomcter. The-power and torque produced by a re-powered truck are reduced by 13% and 14% respectively from the power of gasoline engine. The BHP reduction is one of main problems which one has to solve in near future.

치성낭종으로부터 유래된 편평상피세포암종 : Report of a Case & Review of Literatures

권혁진,현재훈,박형국,김용각 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Odontogenic cysts are relatively common pathologic lesions found in the oral and perioral structures, but the case of squamous cell carcinoma arising from those cysts are very uncommon. After first reported of that case in 1889 by Herman, Schwimmer collected 56 cases of previously reported squamous cell carcinoma arising in residual odontogenic cyst during about past one century. More than 60% of cases of carcinoma developing in odontogenic cysts arising in inflammatory periapical or residual cyst, and these tumors are usually well-differentiated with relatively good prognosis, and often are diagnosed as benign lesion in radiographic or clinical examination, therefore definitive diagnosis must be made by histologic examintation. We report a case and review the literatures, in our case, 78-year old woman were clinically and radiographically diagnosed as residual odontogenic cyst. But in histologic examination after enucleation of lesion, mass of squamous cell carinoma were observed, but in other area, typical cyst wall and lining epithelium were observed. And in some area, carcinoma in situ and invading squamous cell carcinoma into the lining epithlium were also observed.

대전시 노은 도매시장 채소류의 농약 잔류 실태 및 식이섭취량 추정

한국탁,이규승,이은경,이용재,고광용,원동준,이정원,권순덕 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

대전시 노은 도매시장에서 채취한 6종의 채소류 중 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 100건의 분석시료 중 농약이 검출된 시료의 비율은 46.0%이었고, 잔류허용기준 초과비율은 6.0% 이었다. 검출비율이 높은 시료는 상추(85.0%), 깻잎(80.0%), 오이(60.0%) 순이었고, 상추 3건, 깻잎 3건이 허용기준을 초과하였다. 살균제는 dicar-boximide계, 유기염소계, azole계 농약, 살충제는 유기인계, 합성 pyrethroid계 농약이 많이 검출되었다. 검출빈도가 높은 성분은 procymidone, chlorpyrifos, chlorothalonil, cypermethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정 섭취량과 ADI를 비교한 결과, 허용기준을 초과한 깻잎의 bitertanol, triflumizole, iprobenphos가 다른 성분에 비하여 높은 비율을 보였다. 그러나 각 농산물의 식이섭취량이 적어 ADI에 대한 추정섭취량의 비율이 0.46%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. Pesticide residues in some vegetables collected at Noeun wholesale market in Daejeon were surveyed and assessed their risk In 100 samples, the detection rate of pesticide was 46.0% and the rate exceed MRL was 6.0%. Commodities showing high detection rate were lettuce(85.0%), perilla leaf(80.0%) and cucumber(60.0%). Dicarboximide, organochlorine, and azole fungicides and organophosphorus and pyrethroid insecticides were detected. Detection frequency of pesticide was in the order of procymidone, chlorpyrifos, chlerothalonil, cypermethrin and EPN. When the estimated intake amount of the pesticides were compared with ADI to assess their risk, bitertanol, triflumizole and iprobenphos in perilla leaf were higher rate than the other vegetables. However the total amounts of intake of pesticides were estimated to less than 0.46% of ADI.

컴퓨터과학 교육을 중심으로 한 중등 컴퓨팅 교육과정 설계

신상국,권대용,김형신,염용철,유승욱,이원규 한국컴퓨터교육학회 2005 컴퓨터교육학회 논문지 Vol.8 No.3

투포환동작의 운동학적 분석

박찬희,권민호,백승국,김용대 東亞大學校附設스포츠科學硏究所 1996 스포츠科學硏究論文集 Vol.14 No.-

By Making two Univ. shot put athletes, do the shot put motion and after picturing them, through the three dimensional motion analysis, analyzing and comparing the velocity of release, the angle of release, the height of release, and COG track of shot put motion and COG velocity of shot put motion, this study has conclusions like below. 1. At the release point of shot put, athlete KJ's speed was put out was 10.0275 m/sec, and athlete KS' speed was put out was 9.9305 m/sec. The result showed us that athlete KJ's and KS' speed was slower than the previous domestic study. 2. At the release point of shot put, the vertical distance between the center of shot put and ground was 2.11m. And this height is very higher than the previous domestic study and lower than the foreign athletes' height, and it is optimistic phenomenon. 3. At the release point of shot put, the vertical distance between the center of shot put and ground was 2.11m. And this height is very higher than the previous domestic study and lower than the foreign athletes' height, and then it is optimistic phenomenon. 4. At the height of center of gravity, KJ's height was higher than KS', and KS' using degree of circle and concentration degree of shot put release direction were better than KJ's 5. At the moving velocity of center of gravity, KJ showed more increasing acceleration than KS. Through out the shot put, because of KS' much velocity refraction than KJ's, there was a loss.

영지 (Ganoderma lucidum) 자실체 다당류의 분자량에 따른 생리활성

한만덕;김용현;이현수;권현정;전미애;한국일 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2

The study was conducted to investigate the biological activities of an protein-bound polysaccharide (GLP) isolated from the fruit body of Ganoderma lucidum. GLP was extracted by hot water and then it was purified high (GLP-HM) and low (GLP-LM) molecular weight fraction by ethanol precipitation. Both of GLP-HM and GLP-LM at doses of 20 mg/kg in vivo had the ability to inhibit the tumor growth of Sarcoma 180 tumor-bearing mice. Inhibition rates of tumor (%) were inhibited 60.6% and 38.7% by GLP-HM and GLP-LM, respectively. In assay of anti-complementary activity in vitro, the GLP-HM were higher than that of the GLP-LM polysaccharide. And also, the GLP-HM enhanced nitric oxide production of mouse bone marrow cells. When the GLP-HM was injected intraperitoneally in tumor-bearing mouse at doses of 20 mg/kg, the concentration of TNF-α in vivo was 140.9 pg/ml in the serum, 269.6 pg/ml in sarcoma tumor mass and 879.4 pg/ml in liver. This study shows that the high molecular polysaccharide from mushroom can enhance more the bioactivities than that of the low molecular polysaccharide.

EXAMINATION OF TYR-264 FOR ATPase ACTIVE SITE IN E.coli RecA PROTEIN BY SITE-DIRECTED MUTAGENESIS

Kwon, Yong-Kook,Bae, Jun-Seong,Hahn, Tae-Ryong Korean Society of Photoscience 1995 Journal of Photosciences Vol.2 No.1

Site directed mutagenesis has been introduced to determine active site(s) and molecular structure of E. coli RecA protein. Recombinant DNAs were constructed by point mutation of Tyr-264 to Phe which assumed active site for binding and hydrolysis of ATP. RecA proteins were purified from recombinants containing wild type and mutant genes and analyzed for ATPase activity assay. Result suggests that Tyr-264 is involved in ATP binding rather than ATP hydrolysis.

Discrimination of cultivation ages and cultivars of ginseng leaves using Fourier transform infrared spectroscopy combined with multivariate analysis

Yong-Kook Kwon,Myung Suk Ahn,Jong Suk Park,Jang Ryol Liu,Dong Su In,Byung Whan Min,Suk Weon Kim 고려인삼학회 2014 Journal of Ginseng Research Vol.38 No.1

To determine whether Fourier transform (FT)-IR spectral analysis combined with multivariate analysis of whole-cell extracts from ginseng leaves can be applied as a high-throughput discrimination system of cultivation ages and cultivars, a total of total 480 leaf samples belonging to 12 categories corresponding to four different cultivars (Yunpung, Kumpung, Chunpung, and an open-pollinated variety) and three different cultivation ages (1 yr, 2 yr, and 3 yr) were subjected to FT-IR. The spectral data were analyzed by principal component analysis and partial least squares-discriminant analysis. A dendrogram based on hierarchical clustering analysis of the FT-IR spectral data on ginseng leaves showed that leaf samples were initially segregated into three groups in a cultivation age-dependent manner. Then, within the same cultivation age group, leaf samples were clustered into four subgroups in a cultivar-dependent manner. The overall prediction accuracy for discrimination of cultivars and cultivation ages was 94.8% in a cross-validation test. These results clearly show that the FT-IR spectra combined with multivariate analysis from ginseng leaves can be applied as an alternative tool for discriminating of ginseng cultivars and cultivation ages. Therefore, we suggest that this result could be used as a rapid and reliable F1 hybrid seed-screening tool for accelerating the conventional breeding of ginseng.

G PROTEINS INVOLVED IN LIGHT SIGNAL TRANSDUCTION IN PEA SEEDLINGS

Kwon, Yong-Kook,Hahn, Tae-Ryong Plant Molecular Biology & Biotechnology Research C 1995 Plant molecular biology and biotechnology research Vol.1995 No.