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Test strip과 Chlorophyll meter를 이용한 토마토의 신속한 영양진단
김권래,정한울,김계훈 한국농화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.2
본 연구는 지금까지 제시된 여러 가지 간이 식물영양 진단 방법들 중 test strip과 chlorophyll meter의 이용가능성을 검토하고 실제 이용 방안을 모색하고자 수행되었다. 본 실험에서는 양액의 N, P, K 수준을 달리하여 토마토를 재배하면서 생육시기별로 specific color difference sensor value(SCDSV), 엽병 즙액 중 NO_3, PO_4, K의 함량을 측정하였다. 실험 결과 N, P, K 함량의 변화보다 더 민감하였다. Test strip을 이용하여 측정한 토마토 엽병 즙액 중 NO_3, PO_4, K함량 변화가엽 중 total-N, P, K의 농도와 고도의 일차상관관계를 나타내었다. 지금까지 여러 연구를 통해 확립된 토마토의 엽 중 total-N, P, K의 적정 함량을 희귀식에 대입하여 구한 즙액의 적정 NO_3, PO_4, K의 함량은 각각 3.4~5.9, 0.3~0.5, 3.6~6.5 g/l였다. Chlorophyll meter를 이용하여 측정한 SCDSV는 엽 중 total-N 함량을 희귀식에 대입하여 계산한 결과 적정 SCDSV는 36.0~40.0이었다. 본 연구 결과 test strip과 chlorophyll meter는 토마토의 신속한 영양 진단에 이용 할 수 있을 것으로 판단된다. This study was performed to develop a more rapid and simple nutrient diagnosis method of plants than the conventional leaf analysis method. Tomato (Lycopersicon esculentum Mill. cv. super momotaro) was planted in the mixed media produced by nidxing perlite and rock wool at I : I (v/v) ratio. The Yamazakki nutrient solutions for cucumber and tomato were supplied to the media using the rnicro-drip irrigation system. Experimental plots produced consisted of no fertilization, deficient fertilization, adequate fertilization and surplus fertilization for N, P and K, respectively. Each experimental plot was replicated four times. Specific color different sensor values (SCDSV) measured by the chlorophyll meter were closely related to total-N concentrations in the leaves measured by the conventional method. Nitrate, PO, and K concentrations in petiole sap measured by test strips (Reflectoquant, Merck, Germany) showed a significant relationship with total-N, P and K concentrations in leaves. The linear regression equations between NO,, PO, and K concentrations in petiole sap and total-N, P and K concentrations in the leaves were prepared. The optimum levels of NO,, PO, and K in petiole sap were obtained by plugging the optimum concentrations of total-N, P and K in the leaves by other researchers into the equations. In conclusion, the SCDSV by the chlorophyll meter and concentrations of NO,, P and K in petiole sap measured by the test strips would be suitable for rapid estimation of plant nutrient status.
배성수,박래준,권혁철,김진상 大邱大學校 再活科學硏究所 1992 再活科學硏究 Vol.10 No.1
The purpose of this study was test utility of 10% rule in assessment of hand grasp strength. The 10% rule states that the dominant hand possesses a 10% greater grip strength than the non-dominant hand. The subjects for this study consisted of 50 male 50 female college students who agreed participate in this study. Grasp or grip strength was measured with a factory-calibrated hand dynamometer(Preston Co. production) for cylindrical grasp and JAMAR dynamometer for tip pinch strength. Results showed an 14.60% strength of cylindrical grasp and 10.61% strength of tip pinch difference between dominant and non-dominant hands. Second showed that the 10% rule is valid for right handed person. except cylindrical strength of female and tip pinch strength of male. Further research is necessary to determine the characteristics according to hand size and graspping time.
엔로플록사신 액제의 닭유래 병원세균에 대한 시험관내 항균효과 시험
윤효인,박병권,조준형,정상희,박경환,장범수,김종춘,황윤환,임종환,이내경,박승춘 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-
In this study the antimicrobial spectrum and sensitivity of a liquid formulation of enrofloxacin against the major six pathogenic bacteria isolated from the diseased poultry in Korea were evaluated in comparison with ciprfloxacin (CFX), gentamicin (GM) and penicillin (PC). A liquid form of enrofloxacin, a test material and ciprofloxacin showed at least 83% antibacterial activity against all of six test pathogenic microorganisms at the fixed concentration of 10 ㎍/㎖. Gentamicin and penicillin revealed much lower antibacterial activity at the same condition. We evaluated the liquid form of enrofloxacin as having widespread antibacterial spectrum against poultry infections. The liquid form of enrofloxacin showed potent antibacterial activity, with the MIC range being 0.12∼2 ㎍/㎖ against Gram positives, 0.06∼2 ㎍/㎖ against Gram negatives and 0.5∼2 ㎍/㎖ against Mycoplasma spp. These values were equivalent to or somewhat higher than those of ciprofloxacin, but much lower than those of gentamicn and penicillin. This new liquid form of enrofloxacin would find its way in application of mixing with drinking water for the prevention and treatment of diverse infections in chickens.
엔로플록사신 액제의 닭 호흡기 및 소화기 감염증에 대한 예방 및 치료효과
윤효인,박병권,조준형,정상희,박경환,장범수,김종춘,황윤환,임종환,이내경,박승춘 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-
We evaluated the efficacy of the liquid form of enrofloxacin against poultry respiratory and digestive infections, the major problems in the poultry industry, from diverse diagnosis viewpoints. Results obtained through this study were as follows: 1. The liquid form of enrofloxacin showed good acceptability to poultry owing to no abhorrence to the drug by chickens, which indicated its suitability for mixing in drinking water. 2. The application of the enrofloxacin formulation improved the productivity of the chicken farm to a great extent by lowering the death toll of chicken raised in the farm. 3. The use of the drug shortened the days to the market, and increased the body weight at the time of marketing. 4. Preventive and therapeutic effects of the liquid enrofloxacin were observed higher than ampicillin, a major antibiotic used in poultry farming. From above results, the liquid form of enrofloxacin would find its use for the prevention and treatment of digestive and respiratory infections, let alone the growth promotion and feed efficiency, especially in the chicken farming practice.
宋周鎬,李昌岬,洪元杓,孟琦錫,任洪彬,李廷玟,李載元,李來烈,權五憲,金振淳,李文洙 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1
This paper aims at providing a concrete plan to improve technical and vocational teacher education in the College of Industrial Education of Chungnam National University. It is intended to propose a practical four-year regular and short-term course. Also, the estimated required facilities is included in this study as well as their management. The main conclusions and recommendations are summarized as follows; 1) The numbers of students enrollment should be reduced to 220 students which is the approximate number of future demand. 2) In order to offer to the students a broader education and to cope with the increase/decrease in demand of technical and vocational teacher within a specific field, the 8 department existing at the present (Department of Architecture Engineering Education, Civil Eng. Educ., Metallurgical Eng. Educ., Mechanical Eng. .Educ., Electrical Eng. Educ., Electronic Eng. Educ., Industrial Chemistry Educ. and Industrial Technology Educ.) would be combined into 5 (Department of Construction Engineering Education, Mechanical Eng. Educ., Electrical Eng. Educ., Industrial Chemistry Educ. and Industrial Technology Educ.). 3) The short-term course program is recommened to provide additional training and education to those candidates who already have experience in technical fields to meet an occasional demand. 4) It is necessary to add the Teaching Profession Section in the administrative organization of the College.
<i>In-Situ</i> Catalytic Pyrolysis of Dealkaline Lignin Over MMZ-H<i>β</i>
Kim, Young-Min,Park, Rae-su,Lee, Eun-Hwa,Jeon, Jong-Ki,Kim, Sang Chai,Jung, Sang-Chul,Kim, Seungdo,Park, Young-Kwon American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.4
<P>In-situ catalytic pyrolysis of dealkaline lignin (DL) over MMZ-H beta was performed using a pyrolyzergas chromatography/mass spectroscopy for the first time. Non-catalytic pyrolysis of DL mainly produced large amounts of phenolics such as mono-phenol, alkylphenols, guaiacols, eugenols, and vanillin. By applying MMZ-H beta, the amounts of these phenolics were dramatically decreased with the increase of aromatics such as benzene, toluene, ethylbenzene, xylenes, and naphthalenes. The higher conversion efficiency from phenolics to aromatics was obtained by increasing the catalyst to DL ratio from 1/1 to 5/1.</P>
Heavy metal chemistry in soils received long-term application of organic wastes
Kwon, Soon-Ik,Jang, Yeon-Ah,Kim, Kye-Hoon,Jung, Goo-Bok,Kim, Min-Kyeong,Hwang, Hae,Chae, Mi-Jin,Hong, Seung-Chang,So, Kyu-Ho,Yun, Sun-Gang,Kim, Kwon-Rae 'Scientific Research Publishing, Inc.' 2012 Journal of agricultural chemistry and environment Vol.1 No.1