• 건강소식
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• v.37 no.7
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• pp.26-28
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• 2013

100세 시대. 50대에 들어섰다면 인생의 반이 남았다. 자녀들은 장성했고, 남는 것은 시간뿐이다. 품 안을 벗어난 자녀들을 향한 '해바라기' 생활은 접고, 남은 인생을 위한 독립선언을 할 때다. 빈 둥지에서 우울해하지 말고 새로운 나로 채울 시간인 것이다.

• Proceedings of the Korea Society of Design Studies Conference
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• 1998.04a
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• pp.40-41
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• 1998

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.193.1-193.1
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• 2003

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.60-60
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• 2017

화석연료의 고갈과 환경오염이 문제시 되면서 친환경 에너지개발에 대한 연구가 진행되고 있다. 그중 바이오디젤은 동,식물성유지 및 폐식용유를 이용하여 생산이 가능할뿐더러 농용엔진에 특별한 개조 없이 사용가능하다. 또한 바이오디젤 자체에 산소를 함유하고 있어 이산화탄소 저감에 효율적이다. 바이오 디젤에 관한 많은 연구가 수행되었으며, 기존의 연구는 단일유지의 폐식용유를 사용하여 바이오디젤을 생산하는 연구가 진행되었다. 하지만 가정에서 배출되는 식물성 폐식용유의 경우 여러 가지가 혼합되어 배출되고 있어, 혼합폐식용유지의 바이오디젤 특성평가가 필요하다. 따라서 본 연구에서는 폐식물성유지(폐대두유, 폐카놀라유, 폐해바라기유)를 중량비(1:4, 1:1.5 1:0.66, 1:0.25)로 혼합하여 바이오디젤을 생산하고, 생산한 바이오디젤을 농용기관에 이용하여 농용기관의 출력특성 및 배기배출물특성 평가를 실시하였다. 실험에 사용된 농용기관은 배기량이 673cc인 직접분사식 디젤기관(ND10DE, Daedong, Korea)이며, 엔진성능평가를 위해 토크는 토크센서(YDL-704s, Setech, Korea)를 사용하였다. 배기배출물 평가는 배기가스분석기(HG-550, Airlex, Germany)를 이용하여 이산화탄소, 질소산화물을의 배출량을 측정하였다. 폐식용유를 이용하여 생산한 바이오디젤과 경유의 기관성능을 비교한 결과 토크와 축출력의 경우 BD의 혼합량이 증가할수록 줄어들었다. 토크는 혼합된 유지에 따라 상용운전범위인 1500rpm~2400rpm에서 평균 대두와 카놀라유를 혼합하여 생산한 BD10은 7.2%, BD20은 12.1% 감소하였고, 대두와 해바라기유를 혼합하여 생산한 BD10은 11.3% BD20은 16.3% 감소하였다. 또한 해바라기와 카놀라유를 혼합하여 생산한 BD10은 8.3%, BD20은 14.6% 감소하였다. 이는 BD의 발열량이 경유에 비해 낮아 토크가 감소한 것으로 판단된다. 또한 배기배출물 평가의 경우 질소산화물은 BD의 함랑이 증가함에 따라 경유에 비해 배출량이 증가하는 경향을 보였고, 이산화탄소는 저감되는 것으로 나타났다. 이는 바이오디젤이 함산소연료이므로, 연료내의 산소로 인해 완전연소를 촉진시켜 이산화탄소를 저감시키고 질소산화물은 증가된 것으로 판단된다.

• Research in Plant Disease
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• v.25 no.4
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• pp.237-242
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• 2019

Severe damage on a greenhouse grown lettuce (Lactuca sativa L.) associated with Paratylenchus projectus is described for the first time. There were no marketable lettuce in entire greenhouse after three months of planting. Lettuce roots system appeared corky and most of feeder rootlets disappeared. Population densities of P. projectus were ranged from 320-11,600 nematodes per 100 ㎤ of soil. In an inoculation test in a greenhouse, P. projectus is proved as a causal agent of lettuce damage.

• Korean Journal of Poultry Science
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• v.17 no.4
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• pp.281-283
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• 1990

Ten-week-old layer type pullets were used in this study, housed 10 birds per cage(61$\times$41cm) and were replicated 15 times After raising them on a 19% protein diet up to ten weeks of age they were fed a 12% protein corn-soy control diet or one with half or all of the soybean mea replaced with ground full-fat sunflower seeds. At 19 weeks of age, pulltes were transferred to a layer house and their respective diet was gradually changed to a 13.5% layer diet containing 635% oats. The 19% protein SFS diet in treatment 2 did not show my, adverse effect on body weight or subsequent egg productio. The higher level of SES(38%) appeared to delay sexual maturity somewhat as was indicated by body weight and egg production data. However, the higher replacement of soybean with SFS(38%) in the pullet ration may not be critical for sexual maturity, but beneficial in a full laying cycle. There were no adverse effects on later stages of production.

• Korean journal of applied entomology
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• v.19 no.4 s.45
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• pp.221-227
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• 1980

A new disease of strawberry caused by Alternaria was found in Gim Hae, Gyougnam province, in July 1979. The symptoms of the disease occurred mainly on leaves as showing dark brown spots with circular to irregular, $5\~6mm$ in diameter. The pathogen was identified as Alternaria alternate (Fr.) Keissler which has not been described in Korea as a pathogen of strawberry disease. The common name of the disease was given as Gum un mum byung of strawberry. The conidia shape and size of this fungus varied considerably with culture media. The measurements of conidia and beak on corn meal agar were $20.1\times9.3{\mu}\;and\;4.0\mu$, respectively, which were shorter than those on strawberry leaf lesions in the field. Among 49 strawberry varieties tested, Morioca 16 and Robinson were highly susceptible to the disease by artificial inoculation and Catskill, Cyclone, Northwest, Merton princess, Juspa and Daehak I were moderately susceptible whereas 31 varieties were resistant. This fungus could also infect the leaf of Common garden sunflower, Double sunflower and Mexican sunflower among the 14 plants species tested.

• Journal of Soil and Groundwater Environment
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• v.13 no.4
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• pp.30-39
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• 2008

The uranium removal efficiency of rhizofiltration was investigated in lab scale experiment. Three plants such as sunflower (Helianthus annuus L.), bean (Phaseolus vulgaris var.), and Indian mustard (Brassica juncea (L.) Czern.) were cultivated in artificially contaminated solution by uranium at 30 ${\mu}g$/L and 80 ${\mu}g$/L for 72 hours. The removal efficiencies of three cultivars were calculated from the ICP/MS analysis of uranium mass in solution and the plant. For Helianthus annuus L., more than 80% of initial uranium were removed from the solution and the uranium concentration of residual solution maintained lower than 10 ${\mu}g$/L. For Phaseolus vulgaris var. and Brassica juncea (L.) Czern., their uranium removal efficiencies ranged from 60 to 80%. Even the uranium concentration of solution was higher than 500 ${\mu}g$/L, these cultivars removed more than 70% of initial uranium by rhizofiltration, suggesting that the rhizofiltration has a great capability to remove uranium in the contaminated groundwater. The removal efficiency of rhizofiltration by using Brassica juncea (L.) Czern decreased from 83% to 42% with the increase of pH in solution. From the results of the analysis for the uranium accumulation in plants, 99% of uranium transferred into the plant from solution were accumulated in the root and only 1% of uranium existed in the shoot part (including leaves), suggesting that the cost and the time to treat massive grown plants after the rhizofiltration could be dramatically cut down because only their root parts needs to be treated. Finally, the genuine groundwater having high uranium concentration (81.4 ${\mu}g$/L), sampled from Daejoun area, was used in the experiment. The uranium removal efficiency of Helianthus annuus L. for the real groundwater was higher than 95%, investigating that the rhizofiltration is the very useful method to remediate uranium contaminated groundwater.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.49 no.3
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• pp.207-210
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• 2004

Vitamin E, consisting of tocotrienols ($\textrm{T}_3$) and tocopherols ($\textrm{T}$) is well-known nutraceutical compound for its antioxidant, anticancer and cholesterol-low-ering activity. The contents of alpha ($\alpha\textrm{-}$), beta ($\beta\textrm{-}$), gamma ($\gamma\textrm{-}$) and delta ($\delta\textrm{-}$) tocotrienols and tocopheyols in some Korean crop seeds were evaluated by using HPLC after saponification. Among tested crops, total 73 contents (mg/110g) were purple perilla 25.06, barley 4.50, corn 3.54, iris 3.04, adlay 2.58, safflower 0.12. Other crops including 5 soybean cultivars, kidneybean, sunflower and perilla contained no tocotrienols. Regarding $\textrm{T}_3$ isomers, $\beta\textrm{-}$$\textrm{T}_3$ were rut observed in adlay and corn, and $\delta$-$\textrm{T}_3$ were not in iris aid purple perilla, while safflower exhibited no detectable $\alpha\textrm{-}$, $\beta\textrm{-}$ and $\delta\textrm{-}$$\textrm{T}_3$. Total T contents (mg/100g) were high in iris (51.82), perilla (40.90), soybean (34.11), sunflower (20.88), and they all contained all $\alpha\textrm{-}$, $\beta\textrm{-}$, $\gamma\textrm{-}$ and $\delta\textrm{-}$ tocopterol isomers. Total Vit E contents (T ＋ $\textrm{T}_3$, mg/100g) were iris 54.86, purple perilla 41.80, perilla 40.90, soybean 34.11, sunflower 20.88, safflower 14.73, corn 11.49, evening-primrose 10.07, barley 7.48, adlay 6.24 and kidneybean 5.27.

• Korean Journal of Soil Science and Fertilizer
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• v.47 no.5
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• pp.324-331
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• 2014

Landscape crops have decorated its surrounding landscape by being cultivated from spring to late fall. Recently, landscape crops are starting to get the limelight as crops that can be cultivated in large area farmlands. Therefore, we examined the growth characteristics of landscape crops, green manure yield and nitrogen production of crops that are cultivated during summer, which are sunflower, cosmos, sunnhemp and sesbania, in order to select crops that can be utilized as landscape crops and green manure crops. The height of landscape crops increased when the harvest time was later. Especially, sunnhemp, cosmos, sunflower and sorghum grew over 100cm. The days to flowering of sunnhemp and cosmos were 50 and 53 days each, and their flowering period of more than 50 days were long. The days to flowering of sunflower, which was 52 days, was short, and its flowering period, which was 21 days, was also short. When the harvest time was later, the green manure yield and nitrogen production of all crops increased. Individually, the green manure yield was higher in sunnhemp, sorghum, sunflower, with $7.2{\sim}7.5Mg\;ha^{-1}$, and was lowest in sesbania. The nitrogen production was higher in sunnhemp, with $168.1kg\;ha^{-1}$ Therefore, as seen in its flowering characteristics, green manure yield and nitrogen production, sunnhemp had the best green manure and landscape effects among the landscape crops for summer.