• 한국초지조사료학회지
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• 제7권2호
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• pp.97-102
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• 1987

To find out the nutrient contents of temperate grasses on the south and north slope, a field experiment was conducted with five forage species of Dactylis glomerata, Festuca arundinacea, Phleum pratense, Agrostis gigantea and Trifolium repens. It was treated by randomized block design with 4 replications and lasted from September, 1983 to October, 1986 in Suweon. The results obtained are summarized as follows: 1. Mean chemical compositions except NFE and crude fiber of the forage species on the south slope were a little more contented than that of north. But all crude components were significant difference among the species on the south and north exposure. 2. Production of TDN (total digestible nutrient), StE (starch equivalent) ME (metabolizable energy) and NEL (net energy lactation) of different grass species on the north slope were much more increased by 5-30% per ha (Dactylis glomerata by 5-876, Festuca arundinacea by 5%, Phleum pratense by 24-26% and Agrostis gigantea by 25-30%) than that of same grasses on the south, however, those of Trifolium repens were much more increased by 4 1-42% per ha in the south. 3. Mineral contents, Ca/P ratio and K/ (Ca + Mg) equivalent ratio of the species were slightly different between the exposures. But considering the factors of occuring grass tetany, those of the forage species on the north slope were better than that of same species on the south.

• 한국식품영양학회지
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• 제22권4호
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• pp.577-586
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• 2009

Aging is associated with decreased energy expenditure, thermogenesis and energy requirements. Maintenance of physical fitness of the elderly has been reported to reduce the rate at which the basal metabolic rate, muscle strength, skeletal muscle mass and bone density deteriorate. Skeletal muscle disease is known to increase the risk of physical disability and psychological problems. This study was conducted to investigate changes in disability, emotional problems, body compositions, obesity indices and nutrient intake levels according to physical fitness with the elderly in rural areas. According to the results, physical fitness was negatively related with Activities of Daily Living(ADL, p<0.05), Instrumental Activities of Daily Living(IADL, p<0.001), Body Mass Index(BMI, p<0.001) and abdominal obesity(p<0.05), while it showed a positive correlation with the General Self Efficacy Scale(GSES)(p<0.001) and nutrient intake(p<0.05). When changes in these factors were compared according to the range of quartile of the Fullerton Advanced Balance Scale(FAB Scale), GSES(Q1=35.3, Q2=43.5, Q3=53.2, Q4=51.9, p<0.001), BMI(Q1=36.1%, Q2=34.7%, Q3=33.2%, Q4=28.6%, p<0.01), abdominal obesity(Q1=1.02, Q2=0.99, Q3=0.97, Q4=0.94, p<0.001) and nutrient intake(Q1=71.1%, Q2=75.4%, Q3=80.6%, Q4=80.2%, p<0.05) differed significantly. Taken together, these results suggested that better physical fitness would lead to a reduction in negative factors including physical disability and obesity indices, but to an increase in positive factors such as GSES and nutrient intake. The results of this study are expected to be used as basic data for the development of programs to promote the health of the elderly in a local society.

• 한국유기농업학회지
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• 제19권spc호
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• pp.17-20
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• 2011

Plant biomass is a huge carbon-complex that has potential as a nutrient. Therefore we extracted and separated useful materials for plant growth from tea leaf and stem. The pre-treatment process including high temperature ($200^{\circ}C$) and pressure (20-40 kgf/$cm^2$) was treated for several minutes and extracted at $120^{\circ}C$ for 30-60 minutes. After that the chemical compositions and ingredients were analyzed from that plant-nutrient. As a result of mineral contents, calcium and magnesium concentrations are higher than other minerals. Also the result of carbohydrates analyses has shown that the sugar oligomer consists of xylose(95.3%) and glucose(4.7%), and the sugar monomer consists in the order of xylose (52.7%) > manose (22.8%) > arabinose (10.8%) > galactose (10.2%) > glucose (3.5%). Before applied to field, in vitro plant growth system and formulation were examined. To evaluate the effect of the nutrients, both strawberry green-house and persimmon fields were used in this test. The treated persimmons were heavier than controls scored at 13-22%. In addition, the storage-period was extended in the treated strawberries. Interestingly in the treated strawberry, the contents of polyphenols were increased (38-57%). These results suggest that the plant-nutrient can afford to help for plant growth and storage, and it can be substituted for other commercial nutrients. In conclusion, this plant-nutrient may help to extend eco-friendly or organic farming in Hadong-gun area.

• The Plant Pathology Journal
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• 제15권6호
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• pp.340-344
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• 1999

Fungicide-resistant isolates of Monilinia fructicola grew readily on media amended with 0.1, 1.0, 10, 100 and $1,000\mu\textrm{g}$ a.i./ml of carendazim, benomyl, or thiophanate-methyl. However, sensitive isolates did not grow on media amended even with $0.1\mu\textrm{g}$ a.i./ml of carbendazim, $1.0\mu\textrm{g}$ a.i./ml of benomyl or thiophanate-methyl. The fitness compositions including mycelial growth on fungicide-free medium, sporulation on fungicide-free medium and pear, and virulence on pear were not different between resistant and sensitive isolates. The resistant isolates persisted carbendazim resistance during multiple subdulturing and long term storage. The competitive ability of resistant isolates obtained from peach orchards in Korea was similar to those of sensitive isolates.

• 한국식품영양학회지
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• 제15권1호
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• pp.58-63
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• 2002

우리나라 남해안 완도지역에 자생하는 해조류 중 갈조류 9종, 홍조류 5종, 녹조류 2종의 지질함량을을 조사하고 지방산조성을 GLC로 분석하였다. 총지질 함량을 볼 때 갈조류 9종은 0.58∼3.00%, 홍조류 5종은 0.47∼2.16%, 녹조류 2종은 0.55∼2.00%로 매우 낮았다. 지방산 성분중 생리적으로 의의가 큰 n-3계열 지방산은 linoleic (18:3), stearidonic (18:4), eicosapentaenoic(20:5) 및 docosahexaenoic (22:6), n-6계열 지방산은 linoleic(18:2), linolenic(18:3), eicosadienoic (20:2),eicosatrienoic(20:3) 및 arachidonic acid(20:4) 등이 각각 정량되었다. 총 n-3 및 n-6 지방산 조성을 보면 갈조류는 1.46∼25.67% 및 0∼48.51%, 홍조류는 1.17∼21.91% 및 0.28%∼29.35%, 녹조류는 3.67∼ 10.61% 및 4.1 ∼8.66%였다. 해조류는 갈조류, 홍조류 및 녹조류의 종류에 따라 n-3계열 불포화지방산과 n-6계열 지방산 함량 조성이 매우 상이하였으며, 특히 영양학적긴 측면에서 볼 때 지충이, 톳유엽 및 실풀 외에도 광생이모자반, 뜸부기, 톱니모자반, 꼬불꼬시래기 등은 n-3 polyenes의 조성비율이 높은 기능성 식품으로 활용가치가 높은 것으로 고찰되었다.

• Journal of Biosystems Engineering
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• 제32권1호
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• pp.37-43
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• 2007

This study was carried out to investigate the applicability of PVC membrane-based ion-selective electrodes for macronutrients (K, Ca, and N) by measuring of potassium, calcium, nitrate ions in hydroponic nutrient solution. The capabilities of two ion-selective membranes with varying chemical compositions for each ion were evaluated in terms of sensitivity, selectivity, and lifetime to choose sensing elements suitable for measuring typical ranges of nutrient concentrations in hydroponic solutions. The selected calcium and nitrate ion-selective membranes showed effectively sensitive responses to calcium and nitrate ions with lifetimes of 25 and 15 days, respectively. The addition of a cation additive to the potassium membrane cocktail allowed its sensitivity to be increased whereas its lifetime was reduced from 30 days to 10 days.

• Journal of Ginseng Research
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• 제20권1호
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• pp.36-41
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• 1996

Chemical components of Panax (P) species were compared. p. species used were Korean white ginseng, Korean, Chinese and Japanese red ginseng (P ginseng), American and Canadian ginseng (P. quinquefolium) , and sanchl ginseng (P. notoginseng). No significant difference in the proximate contents was observed among P. species. Ash, crude lipld and total sugar contents in root of P. notoginseng were found to be relatively lower than those of P. ginseng and P. quinquefolium, but the contents of crude protein and crude fiber were similar among those ginsengs. Mineral nutrient con tents showed a little difference among ginseng species. Total nitrogen contents were slightly higher in P. ginseng than P. quinquefolium and P. notoginseng and Fe and Cu were lower in Chinese and Japanese red ginsengs. Kinds and compositions of amino acids were similar but contents of amino acids were different among ginseng species. Total amino acid contents were 76.3∼83.9 mg/g in P. ginseng 53.8∼60.4 mg/g in p. quinquefolium and 54.9 mg/g in P notoginseng. Free sugar contents were lower in P. notoginseng than P. ginseng or P. quinquefolium. Sucrose accounted for 90∼92% of total free sugar contents with relatively high content in white ginsengs, while sucrose and maltose were 32-36% and 55∼60%, respectively, in red ginseng.

• 한국토양비료학회지
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• 제14권4호
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• pp.215-218
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• 1982

3요소성분비율(要素成分比率)이 상이(相異)한 복합비료(複合肥料)의 비효를 고추품종(品種) 중원청룡을 사용(使用)하여 포장(圃場)에서 단비와 대비(對比)해서 검토(檢討)한 결과(結果)는 다음과 같다. 가. 고추적과(赤果)의 수량(收量)은 단비구보다 공시(供試)한 복합비료(複合肥料)를 시용(施用)한 경우에 증수(增收)되었는데 통계적(統計的)인 유의차(有意差)는 없었다. 나. 식물분 분석결과(分析結果)는 처리별(處理別)로 아무런 경향(傾向)이 없었으며 수량(收量)과의 상관(相關)도 인정(認定)되지 않았다. 다. 시험후(試驗後) 토양(土壤)의 화학적성질(化學的性質)은 복합비료구(複合肥料區)가 단비구 보다 유효인산함량을 높였고 기타성분(其他成分)은 비종간(肥種間)에 차이(差異)가 없었다.

• 생물환경조절학회지
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• 제6권1호
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• pp.1-14
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• 1997

환경 보전에 대한 필요성이 대두되면서 비순환식 양액재배 시스템이 순환식 양액재배 시스템으로 전환됨에 따라 순환식 양액재배 시스템에 적합한 배양액의 개발이 시급히 요구되고 있다. 따라서, 순환식 고형배지경에 적합한 배양액을 개발하기 위하여 본 실험을 수행하였으며 그 결과는 다음과 같다. 1. 오이 순환식 고형배지경에 적합한 배양액 조성 및 농도를 알아보기 위하여 일본 야채 시험장 표준액을 1/2 배액, 1 배액 및 3/2 배액으로 조제하여 오이를 재배한 결과, 오이의 초장은 배양액농도를 높임에 따라 짧아졌으며 엽장, 엽폭 및 처리 농도간에 차이가 없었고 상품과수와 상품수량은 1 배액에서 가장 많았다. 양수분흡수율(n/w)에 따라 개발된 오이 순환식 고형배지경에 적합한 배양액 조성(SCU 배양액)은 영양 생장기 동안 N 11.4, P 3.3, K 6.0, Ca 4.5 및 Mg 3.5 me.$\ell$$^{-1}$, 생식 생장기 동안 N 10.4, P 3.3, K 5.0, Ca 4.5 및 Mg 3.5 me.$\ell$$^{-1}$이었다. 2. 순환식 배양액으로 개발된 SCU 배양액의 적합성을 검정하기 위하여 산기 배양액, PTG 배양액 및 SCU 배양액에서 오이를 재배한 결과, 근권내 EC와 pH는 모든 배양액에서 생육기간 동안 안정적이었다. 배양액 내의 다량원소를 측정한 결과, 산기 1 배액, PTG 1 배액, SCU 1/2 배액, SCU 1 배액 및 SCU 3/2 배액 모두 오이의 생육이 진전됨에 따라 배양액내 N, P 및 K 농도는 감소하였으며 Ca 농도는 완만하게 상승하였다. Mg는 뚜렷한 경향을 보이지 않았다. 오이의 광합성속도는 SCU 1 배액, SCU 3/2 배액 및 산기 1 배액에서 높았다. 생육은 SCU 1/2 배액에서 가장 낮았고 SCU 1 배액과 SCU 3/2 배액, 산기 1 배액 및 PTG 1 배액에서는 처리간에 차이를 보이지 않았다. 엽내 N, P, K 및 Mg 함량은 SCU 1 배액, 산기 1 배액 및 PTG 1 배액에서 적정 수준을 나타냈고 엽내 Ca 함량은 PTG 1 배액에서 낮았다. 총수량은 SCU 1 배액에서 가장 높았고 다음으로 산기 1 배액에서 높았다. 따라서 본 실험에서 개발된 배양액(SCU 배양액)은 오이 순환식 고형배지경에 적합한 배양액이라 할 수 있다.

• 생물환경조절학회지
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• 제16권1호
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• pp.13-20
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• 2007

수경 재배 관련 기술개발 및 수경재배의 효율화를 위한 기초 자료 수집 측면에서 온라인 특허 검색 유료사이트(http://www2.wips.co.kr)를 이용해 1983년부터 2006년 1월까지의 수경재배와 관련된 국 내 특허출원정보를 분석하였다. 수경재배에 관련된 특허출원은 59건이 검색되었다. 특허의 내용은 수경재배 장치에 관한 것 19건(32.2%), 수경재배 자재에 관한 것 13건(22.0%), 양액의 조성에 관한 것이 11건(18.6%), 수경에 의한 재배방법에 관한 것 9건(15.3%), 수경재배배지에 관한 것 7건(11.9%) 순으로 많았다. 특정의 작물을 대상으로 한 양액의 조성 및 수경에 의한 재배방법의 대상 작물로는 토마토가 5건, 감자가 4건으로 많았다. 특허 출원시기는 전체적으로 2000년 이전에 출원된 것이 33건(55.9%)을 차지하였으며, 2000년 이전에는 양액조성과 자재와 관련된 것이 상대적으로 많았고, 2000년 이후에는 수경 재배방법과 배지에 관한 것이 상대적으로 많았다.