A New Sesame Variety, “Kangbaek” with Disease Resistance, Lodging Tolerence and High Yield

Kang-Bo Shim,Churl-Whan Kang,Suk-Bok Pae,Si-Kyu Lim,Yu-Young Lee,Duck-Yong Suh,Jae-Whan Rho,Jin Song,Dong-Whi Kim,Ho-Young Kim 한국육종학회 2005 한국육종학회지 Vol.37 No.5

A new sesame variety Kangbaek was developed from Yeongnam Agricultural Research Institute in 2004. Cros wasmade by lodging resistant SP9003-3 line to the F1with high yielding capacity, folowed by pedigree selection, yield test and RYT by the sesame breeding team at the National Insti-tute of Crop Science up to 2003. The variety showed higher disease resistance, especially phytophothra disease, and lodging resis-respectively. It's 1000 grains weight was about 2.54 g indicating 0.03 g heavier than that of Yangbaekkae, and it's oil content wasabout 52%. Kangbaek also contained total 7.65mg/g of such lignans as sesamin and sesamolin. The average yield of Kang-baek was 82 kg per 10a at the national-wide regional performance.

ASA시스템을 이용한 합병정화조의 개선 및 경제성 평가에 대한 연구

강용태,김화석 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

Most of existing combined septic tanks of household wastewater and night soil have been treating medium or small scale domestic wastewater by means of activated sludge process. But this process is mainly organics-removed process such as BOD and SS. So nitrogen and phosphorus which is the main issues of eutrophication are not properly treated in this process. Therefore, in order to treat nitrogen and phosphorus stably, in this study, retrofical combined septic tank including sludge stabilization basin is applied to a small domestic wastewater treatment facility and treatment efficiencies of organic matter and nutrients and economics in this process are investigated. As a initial operation results of Activated Sludge(AS) process and Advanced Step Aeration(ASA) process applied as combined septic tank, SS and COD removals in ASA process compared to AS reached the steady state in a short term. T-N and T-P removals in ASA process is from fifteen to twenty percent higher than those of AS process. Results investigating the economics of ASA process have it that in case of comercializing ASA process as a small treatment plant(such as FRP tank) it is described that ASA process is to be saved to the degree of from ten to fifty percent in compared with other methods.

하수 재이용을 위한 처리시스템의 구성 및 처리특성

강용태,김화석,조용현 東亞大學校 海洋資源硏究所 2002 硏究論文集 Vol.14 No.1

Experimental study of Pilot-plant scale has been performed with ASA system connected with Sand filter, GAC, and RO as wastewater reusing system. As the results of the batch test performance of ASA + Sand filter +GAC connecting with RO, CI^-, COD NH_4-N and PO4-P were over 99% in all cases of 20 bar, 30 bar and 40 bar. Especially, CI^- level was shown with excellent removal rate of over 99%. It was sure that all the items had over 90% removal. 20 bar selected in RO batch test was adopted to continuous test. The results have it that CI^-, COD, NH_4-N, PO4-P and Ca^2+ except for turbidity were over 91%. Through the assessment of wastewater reuse, only the treatment by ASA + sand filter or ASA + Sand filter + GAC system is applicable to toilet flushing or cleaning. Particularly, it is considered that ASA + Sand filter plus RO system is very effective as dyeing industy water which need high water quality. key words : Advanced Step Aeration (ASA) system, Wastewater Reuse, Sand Filter, GAC, RO system.

액체-고체 순환유동층에서 액상의 반경 방향 혼합 및 액체-고체 Chaotic 흐름 거동

강석환,이찬기,송평섭,강용,김상돈,김승재 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.2

직경이 0.102m이고 높이가 3.5m인 액체-고체 순환유동층의 상승관에서 압력요동 및 액체의 반경 방향 혼합 특성을 고찰하였다. 상승관에서 얻은 압력요동을 해석하기 위하여 chaos 이론을 도입하였다. 액체 유속, 유동입자의 크기 그리고 고체 유동입자의 순환속도가 연속액상의 반경방향 분산계수 및 압력요동의 위상공간투영과 상관차원에 미치는 영향을 결정하였다. 본 연구의 결과 액상의 반경방향 분산계수는 유동입자의 크기와 순환속도가 증가함에 따라 증가하였으며 액상의 유속이 증가함에 따라 감소하였다. 상승관에서 압력요동의 위상공간투영은 유동입자의 크기가 고체 유동입자의 순환속도가 증가함에 따라 점점 분산되고 복잡하게 되었으나, 액체유속이 증가함에 따라서는 위상공간에서 궤적의 분산이 다소 감소하는 경향을 나타내었다. 압력요동의 상관차원은 유동입자의 크기와 고체 순환속도가 증가함에 따라 증가하였으나, 액체의 유속이 증가함에 따라서는 큰 변화가 없었다. 본 연구의 결과는, 상승관에서 액상의 반경 방향 혼합 특성 압력요동 측정함으로써 실시간으로 예측하는 것을 가능하게 하여 실제공정에 응용함으로써 그 실용적 측면이 크다고 하겠다. Characteristics of pressure fluctuations and liquid dispersion in the radial direction were investigated in the riser of a liquid-solid circulating fluidized bed whose diameter was 0.102m and 3.5m in height. The concept of chaos theory was employed to analyze the pressure fluctuations obtained in the riser. Effects of liquid velocity, particle size, and solid circulation rate on the liquid radial dispersion coefficient and phase space portraits and correlation dimension of pressure fluctuations were determined. It was found that the radial dispersion coefficient of liquid phase increased with increasing particle size or solid circulation rate, but decreased with increasing liquid velocity. The attractor in the phase space portraits became more scattered and complicated with increasing particle size or solid circulation rate, but it became somewhat less scattered with increasing liquid velocity. The correlation dimension of pressure fluctuations increased with increasing particle size or solid circulation rate, but it did not change considerably with increasing liquid velocity. The results of this study enable us to predict the characteristics of liquid radial dispersion by means of the pressure fluctuations for the practical applications.

물유리(규산나트륨)의 유기화와 신소재개발

강용식,김원덕,주미숙 중앙대학교 기술과학연구소 1989 기술과학연구소 논문집 Vol.19 No.-

The silylation of sodium silicate, Water glass, for the preparation of new orqanic matters has been studied through silicic acid from commercial sodium silicate and organic silane. Sodium silicate was acidified by addition of diluted sulfuric acid carefully under prevention of gelation, and prepared silicic acid solution was extracted by tetrahydrofurane. finally trimethylsilylates was prepared by reaction of the silici acid and trimetylchlorosilane. The authers have investigated properties of the silylates through IR, ¹HNMR spectra, X-Ray diffraction, thermal analysis and gel chromatography. And it was clear that the molecular weight of the trimethylpolysiloxane 1000 to 1500, the decomposition temperature 390 to 410℃ and the melting point 80 to 150℃.

호르텐스극구흡충에서 Alkaline Phosphatase 및 Acid Phosphatase의 특성

강성구,양용석,박주연,임지애,김인식 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY 1999 Journal of biomedical laboratory sciences Vol.5 No.1

호르텐스극구흡충 성충 (adult worm)을 재료로 하여 acid phosphatase (Acp)와 alkaline phosphatase (Alp)의 조직 세포에 대한 분포 및 동위효소의 특성을 규명하기 위하여 Gomori lead nitrate 및 Gomori calcium 방법 그리고 전기영동법 등을 시행하였다. 조직 내의 Acp 및 Alp의 분포는 충체의 소장 (intestine)과 난황선 (vitellaria) 그리고 인두 (pharynx)에서 강한 반응을 나타냈다. 동위효소 유형은 Acp에서 179.5 및 209.4 kDa 두 개의 분획이 분리되었고, Alp은 145.9, 207.5 및 220.8 kDa의 세 개의 분획이 분리되었다. 열에 대한 안정도는 Alp가 90℃에서 12초 경과 후에 완전히 불활성화 되었으며, Alp의 최적 온도 및 pH는 40℃와 pH 9이었고 Acp의 최적 pH는 5였다. 그리고 Acp 및 Alp의 최대활성도 (unit)는 Acp가 71 범위였고, Alp는 189의 범위에 있었다. 이상에서와 같이 호르텐스극구흡충은 phosphatase가 소화관과 난황선에서 주로 분포하고 있었으며 숙주 체내에서 소화관을 중심으로 대사가 활발하게 이루어지고 있음을 알 수 있었다. This study was aimed to investigate the enzyme-histochemical localization and characteristics of alkaline and acid phosphatase extracted from adult of Echinostoma hortense. Using the Gomori calcium stain and the Gomori lead nitrate satin method, we found that the alkaline and acid phosphatases were localized mostly in the intestine, vitellaria and pharynx of Echinostoma hortense. The three isozymes of alkaline phosphatase and two isozymes of acid phosphatase were separated from Echinostoma hortense by electrophoresis. The isozymes of alkaline phosphatase were 145.9, 207.5, 220.8 kDa and the isozymes of acid phosphatase were 175.9 and 209.4 kDa. The activity of alkaline phosphatase was denatured completely after heating at 90℃ for 12 seconds. The optimum pH and temperature for activity of alkaline phosphatase were about pH 9 and 40℃, while the optimum pH for activity of acid phosphatase was about pH 5. The maximum activity of alkaline phosphatase was at 189 unit, but maximum activity of acid phosphatase was at 71 unit. As the result from above, we observed that alkaline and acid phosphatases funtion mainly in the alimentary tract and vitellaria. Echinostoma hortense performs the parasitism in the intestine of host by using proper isozyme of phosphatase.

Simvastatin이 골결손부 회복에 미치는 영향

강정호,김규태,최용석,이현우,황의환 대한구강악안면방사선학회 2008 Imaging Science in Dentistry Vol.38 No.3

Purpose : To observe and evaluate the effects of Simvastatin-induced osteogenesis on the wound healing of defective bone. Materials and Methods : 64 defective bones were created in the parietal bone of 32 New Zealand White rabbits. The defects were grafted with collagen matrix carriers mixed with Simvastatin solution in the experimental group of 16 rabbits and with collagen matrix carriers mixed with water in the controlled group. The rabbits were terminated at an interval of 3, 5, 7, and 9 days, 2, 4, 6, and 8 weeks after the formation of defective bone. The wound healing was evaluated by soft X-ray radiography. The tissues within defective bones were evaluated through the analysis of flow cytometry for the manifestation of Runx2 and Osteocalcin, and observed histopathologically by using H-E stain and Masson’s trichrome stain. Results : 1. In the experimental group, flow cytometry revealed more manifestation of Runx2 at 5, 7, and 9 days and Osteocalcin at 2 weeks than in the controlled groups, but there was few difference in comparison with the controlled group. 2. In the experimental group, flow cytometry revealed considerably more cells and erythrocytes at 5, 7, and 9 days in comparison with the controlled group. 3. In the experimental group, soft x-ray radiography revealed the extended formation of trabeculation at 2, 4, 6, and 8 weeks. 4. Histopathological features of the experimental group showed more fibroblasts and newly formed vessels at 5 and 7 days, and the formation of osteoid tissues at 9 days, and the newly formed trabeculations at 4 and 6 weeks. Conclusion : As the induced osteogenesis by Simvastatin, there was few contrast of the manifestation between Runx2 and Osteocalcin based on the differentiation of osteoblasts. But it was considered that the more formation of cells and erythrocytes depending on newly formed vessels in the experimental group obviously had an effect on the bone regeneration.

탄화물 입자 강화 7075 Al 합금 기지 복합재료의 미끄럼마멸 특성 연구

강석하,박형철,강신철,김용석 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-

Effects of the type and volume fraction of carbide-particle-reinforcements on dry sliding wear behavior of 7075 Al alloy matrix composites were investigated. SiC, TiC and B₄C reinforced 7075 Al alloy matrix composites were manufactured by a pressureless infiltration technique and wear tested. Wear tests were carried out using a pin-on-disk wear tester with varying loads of 3N-160N at a constant sliding velocity of 0.2m/s. AISI 52100 bearing steel ball was a counterpart of the composites. Wear resistance of the composites was always higher than that of the monolithic alloy except the TiC reinforced 7075 Al matrix composite. The resistance increased with the increase of volume fraction of the reinforcing particles. Among the composites, the TiC reinforced composite had the lowest wear resistance and the B4C reinforced composite showed the highest wear resistance.

김치의 혈전용해작용

강정옥,정영기,김정옥,양웅석,공인수 동의대학교 기초과학연구소 1996 基礎科學硏究論文集 Vol.6 No.1

Fibrinolytic activity of fermented kimchi and ingredients used for the preparation were assayed by measuring the lysis area on plasminogen-rich fibrin plate. Fermented kimchi and pickled fish sauces from changlan, prwan, and anchovy showed the activity, and the activity of pickled fish sauces were high in the order of pickled changlan, pickled anchovy(pickled mulchi), and pickled prawn. However, the activity of kimchi may not be attributed to pickled fish sauce because kimchi containing fish sauce did not possess activities before fermentation. To investigate fibrinolytic agents in the kimchi if protein, the activities were determined from the samples heated for 30min at 100℃. There was no changes in the activities before and after heat treatment indicating the agents may be components other than protein. Since major changes occur during kimchi fermentation were increased sour taste due to production of organic acids such as lactic, citric, oxalic, and succinic acids, the authentic organic acids present were examined for fibrinolytic activities. The results indicates that the major component posses the activity is lactic acid.

재난관리의 제약요인과 대책

강용석 동의대학교 지방자치연구소 2005 공공정책연구 Vol.22 No.-

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