• Journal of Korea Foresty Energy
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• v.24 no.2
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• pp.1-9
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• 2005

After manufacturing fermentation system for degrading pig manure using environmentally friendly technique, performance of the system and characteristics of wood chips and pig manure fermented in the system were analyzed. Results from this study shows that proper fermentation temperature($55{\sim}60^{\circ}C$) reached 3days after the system started and degradation rate, which expresses fermentation performance of system, was $180{\iota}$/day. Even as progressing the fermentation of wood chips and pig manure mixture, the amount of extractives drawn out by alkali, and alcohol-benzene and lignin content was not varied. However, ash content in wood was increased. The inorganic compounds in pig manure seem to be transferred into wood chip. On the other hand holocellulose contents in wood were decreased a little. Holocellulose seems to be consumed as the second carbon source in fermentation process. Results through analysis of inorganic- and heavy metal elements contents in wood chips and pig manure fermented in long term process shows that inorganic elements($Ca^{2+},\;Mg^{2+},\;K^+,\;Na^+$ etc.) contents were increased with fermentation time and heavy metal elements(Cd, As, Cu etc.) which cause environmental pollution were not detected. Number of microorganisms including bacteria, actinomycetes, and fungi, the number of C.F.U(Colony Forming Unit) was increased while temperature in fermentation system was abruptly increased.

• Horticultural Science & Technology
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• v.29 no.2
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• pp.95-101
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• 2011

The influence of physicochemical properties of root substrates on the growth of mother plants and occurrence of daughter plants in 'Seolhyang' strawberry propagation were investigated through plastic bag cultivation. Six different formulations of root substrates were coir dust + perlite (5:5, A), coir dust + perlite (6:4, B), coir dust + perlite (7:3, C), coir dust + coconut chip (7:3, D), coir dust + coconut chip (6:4, E), and peatmoss + vermiculite (5:5, v/v; F). The total porosities (TP) and container capacities (CC) of all root substrates were higher than 85% and 55%, respectively, indicating that all substrates were in the acceptable range. But the TP and CC of F substrate were 91.5% and 60%, respectively, which were the highest among the root substrates tested. In the soil chemical properties analyzed before planting and after harvesting of 'Seolhyang' strawberry mother plants, the root substrates of A, B, C, and F had higher electrical conductivity and $NO_3$-N concentrations than those of D and F. The root substrates of A, B, C, and F had heavier runner fresh and dry weights, longer runner lengths, and more daughter plant occurrence than those of D and F. The treatment F had higher tissue N content than any other treatments at 120 days after the transplanting of 'Seolhyang' strawberry and statistical differences were not observed among remained 5 substrates. The treatment of F also had the higher tissue contents of other nutrients except N analyzed at 120 days after transplanting. These results indicated that soil chemical properties rather than physical properties severely influenced the growth of runners and occurrence of daughter plants.

• Journal of Animal Science and Technology
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• v.46 no.2
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• pp.209-216
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• 2004

This study was carried out to investigate the effects of addition of mugwort powder 0.7%, 10/0, 2%) on the quality characteristics of emulsion-type sausages. The pH, color, TBARS, textural properties, minerals content and sensory evaluation were evaluated. The pH values of sausage containing mugwort powder were significantly lower as compared to control during 20 days of storage, but there were higher than those of control at 40 days of storage. The $L^*$ and $a^*$ values of sausage containing mugwort powder were significantly lower as compared to control, but the $b^*$ values were significantly higher in the sausage containing mugwort powder. The TBARS values of sausage containing mugwort powder were significantly lower than those of control at 20 and 45 days of storage. The hardness values of sausage containing mugwort powder were significantly lower than those of control. The Na content of sausage containing mugwort powder were significantly lower as compared to control, but Mg, Ca, Mn and Fe contents were significantly higher in the sausage containing 2%l mugwort powder. Sensory panels evaluated that sausage containing mugwort powder had the higher preference scores in mugwort flavor.

• Journal of Mushroom
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• v.8 no.3
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• pp.96-101
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• 2010

The purpose of this study was to evaluate the mineral difference about Phellinus from cultivated on mulberry, oak and elm by ICP test. The major mineral components were Ca, K, Fe, P, Al and Na. In Ca, fruiting bodies from cultivated on mulberry were shown about 2~4 times highest, and in case of K was fruiting bodies from cultivated on oak shown about 2 times highest as against the other sample groups. Especially, Na was fruiting bodies from cultivated on oak shown about 10 times highest as against the other sample groups. In this study, fruiting bodies on P. linteus and P. baumii from cultivated the same kind of material lumber are similar mineral components, and we can't really find much their difference. As a results, what kind of mineral component content had showed depend on material lumber.

• Polymer(Korea)
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• v.29 no.5
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• pp.451-456
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• 2005

In the field of designing of nano-fillers of polyimide nanocomposites, the two strategic points are the heat-resistance and compatibility with polyimide, a matrix polymer. In this study, we designed oligo(amic acid) having alkyl side chains and terminal amine groups to satisfy previous requirements and studied the modification of surface of layered silicates. Oligo(amic acid)s were prepared by the reaction of diamine monomers and PMDA and their molecular weight was controlled in about 2000g/mol. After that, acidification and ion exchange reaction led to the high-temperature organophilic layered silicate (OLS). XRD pauerns of OLS showed the more increased gallery spacing by $4{\AA}$ than that of the pristine layered silicate and the initial decomposition temperatures of OLS were in above $280^{\circ}C$. The polyimide nanocomposite films based on heat resistant OLS showed that the OLSs were well dispersed through the matrix and their CTEs showed a decrease of $26\%$ compared with pristine polyimide films.

• Journal of Bio-Environment Control
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• v.7 no.1
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• pp.55-61
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• 1998

This experiment was conducted to evaluate the effects of sulfate ion concentration in nutrient solution on the growth and qualify of Mongolian wormwood (Artemisia mongolica var. tenuifolia). Sulfate ion concentration was treated 0, 0.5, 1, 2 and 3mM using the modified nutrient solution composition for herb plants developed by European Vegetable R & D Center in Belgium. The growth of Mongolian wormwood was good at 3mM treatment and dry weight was best at 3mM treatment, Chlorophyll content increased with sulfate ion concentration. Mineral content did not show any significant difference among treatments. But Ca content in tissue markedly decreased at 3mM treatment. Sulfate ion uptake increased in proportion to sulfate ion concentration in nutreint solution, the higher sulfate ion concentration, the more uptake of sulfate ion by plant. At 1mM sulfate ion treatment, essential oil content was best, but the higher sulfate ion concentration resulted in decrease of essential oil content.

• Korean Journal of Food Science and Technology
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• v.27 no.5
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• pp.724-728
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• 1995

Chemical compositions of dried Auricularia polytricha mushroom were analyzed when the dried mushroom were soaked in distilled water at different soaking condition. Physicochemical properties of soaked mushroom were investigated. Compositions of chemical components were 12.6% crude protein, 2.1% crude fat, 6.7% crude fiber and 6.2% ash. The contents of Ca, K, Mg were higher than those of other minerals in the sample, but Mn and Ni were of little quantities. The major amino acids of the sample were found to be aspartic and glutamic acid. The increase in the soaking time and temperature increased the ratio of water uptake, amount of water soluble solid, browning and pH value in the soak water. Ribonucleotide contents of the sample after soaking decreased depending on soaking time and temperature.

• Journal of Bio-Environment Control
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• v.8 no.2
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• pp.90-98
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• 1999

This study was conducted to select proper substrate and nutrient solution concentration for favorable growth and quality in common thyme (Thymus vulgaris L.). The growth of common thyme was better in deep flow culture (DFT) than in other substrate cultures. As the nutrient solution concentration rose, the ratio of dry matter increased, while the fresh weight and the number of lateral shoots decreased. The contents of total chlorophyll and vitamin C were higher in DFT than others. Ca, K, P were showed high contents in cocopeat, but Mg content was the highest at half-fold concentration in DFT. Common thyme showed low content of nitrate in DFT compared with that in other substrate culture. DFT was the most effective system for pronoting growth and quality of common thyme. The optimal concentration of nutrient solution in common thyme was half-fold(EC=1.2mS/cm) of herbs nutrient solution by European Vegetable R&D Center.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.68 no.2
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• pp.69-80
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• 2023

This study investigated the differences in barley growth at different growth stages (Dec, Feb, and Apr) and the yield at harvest in three groups (G1, G2, and G3) with different climates. Additionally, we measured meteorological differences between areas during the growing season to determine which factors were related to growth and yield differences. We evaluated the chemical composition of soil and the mineral content in leaves during the heading stages. We also recorded the main constituents, amino acids, and mineral compositions of barley seeds grown in different areas. Tiller number/m² in G1 areas was higher than in G2 and G3 when measured before and after overwintering. However, tiller number/m² and dry aboveground plant parts/m² in G2 and G3 areas were higher than in G1. Regrowth, panicle formation, and heading days in G2 areas occurred slightly later than in G1 and G3. However, there was no difference in chlorophyll content (SPAD value) between groups. The yield in G1 areas was 9~15% less than in G1 and G3. The decrease in yield in G2 areas could be due to lower panicle number, spikelet number, and ripening rate. In addition, the decrease in yield in G2 areas is likely because maximum, minimum, and average daily temperatures during the growing season were lower than those in G1 and G3. However, mineral nutrients in the soil were higher in the G2 area than in G1 and G3. The overall mineral content in plants tended to be higher in G1 areas than in G2 and G3. Mineral content such as Cu, K, Mg, and P in G3 areas and crude protein and most amino acids in G2 areas tended to be relatively low compared to other areas. Thus, the G1 area may be suitable for barley cultivation without adverse impacts on barley yield, main constituents, amino acids, and mineral contents compared to the main producing areas in G3.

• The Korean Journal of Food And Nutrition
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• v.23 no.4
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• pp.516-525
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• 2010

Flaxseed has recently gained attention as a functional food. In this paper, physicochemical analyses of flaxseed and its oil were performed. Crude fat content ranged from 37~43%, moisture 0.2~6.8%, carbohydrate 30~35%, crude protein 18~23%, and crude ash 3~4%. Flaxseed is also an important source of dietary fiber. The TDF(total dietary fiber) contents of the flaxseed samples were 28~31%, and the SDF(souble dietary fiber) content of roasted flaxseeds was higher than that of raw flaxseeds. The major minerals found in flaxseed were calcium, potassium, magnesium, and phosphate. The flaxseeds were rich in ${\gamma}$-tocopherol with 234.3 mg/kg in raw brown flaxseed and 134.1 mg/kg in raw gold flaxseed, respectively. Roasted flaxseeds showed slightly lower vitamin and amino acid contents than those of the raw samples. The iodine, saponification, and acid values of brown flaxseed oil were 204.1 g/100 g, 193.6 mg/g, and 1.59 mg/g, and for gold flaxseed oil were 203.0 g/100 g, 189.9 mg/g, and 2.35 mg/g, respectively. ${\alpha}$-Linolenic acid(ALA, C18:3n-3) was highly concentrated in the flaxseed oil, which constituted about 55.5~56.1% of total fatty acids. Thus, flaxseed oil is a good source of omega-3 fatty acids and beneficial for the heart. Flaxseed contains high levels of dietary fiber including lignans, as well as minerals and vitamins, which may have antioxidant actions and help protect against certain cancers.