• Plant Resources
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• v.8 no.2
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• pp.122-129
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• 2005

Mung bean (Vigna radiata L.) is an increasingly important human food source, as well as a new functional agent, mainly due to its potent antioxidant activity. This study was conducted to determine antioxidant activity of fractions from mung bean seeds by measuring DPPH radical scavenging activity and to quantify the flavonoids by means of HPLC analysis. Vitexin and isovitexin were present in both ethanol and water extracts in highest amount. Flavonoids, vitexin and isovitexin were quantified from 195 germplasms of mung beans and their concentrations varied by 4.7 fold. Especially, the breeding line KM99004-4B-2 (Suwon28/KM94004), which has grown in Jeollanamdo Agricultural Research and Extension Services, showed the highest amount (15.88 mg/g) of total flavonoids. The vitexin portion was averaged $70.73{\pm}1.38\%$. High positive correlation $(r=0.96^{***})$ between vitexin and isovitexin contents showed. However, the flavonoid content showed very low correlation with the 24 growth and ecological characteristics. Seed coats of mung beans had the highest flavonoid amount, showing $50\~70$ times more than cotyledons. Flavonoid contents in the seed, the cotyledon, and the seed coat were decreased as the seed imbibition time increased.

• Geophysics and Geophysical Exploration
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• v.18 no.1
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• pp.1-8
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• 2015

To estimate the shear-wave velocity (${\nu}_s$ beneath the OTVZ seismic station on Ngauruhoe volcano in New Zealand, we calculated receiver functions (RFs) using 127 teleseismic data ($Mw{\geq}5.5$) with high signal-to-noise ratios recorded during November 11, 2011 to September 11, 2013. The genetic inversion algorithms was applied to 21 RFs calculated by the iterative time-domain deconvolution method. In the 1-D ${\nu}_s$ model derived by the inversion, the Moho is observed at a 14 km depth, marked by a ${\nu}_s$ transition from 3.7 km/s to 4.7 km/s. The average ${\nu}_s$ of the overlying crust is 3.4 km/s, and the average ${\nu}_s$ of a greater than 9-km thick low-velocity layer (LVL) in the lower crust is 3.1 km/s. The LVL becomes thinner with increasing distance from the station. Another LVL thicker than 10 km with ${\nu}_s$ less than 4.3 km/s is found in the upper mantle. Those LVLs in the lower crust and the upper mantle and the relatively thin crust might be related to the magma activity caused by the subducting Pacific plate.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.483-488
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• 2001

Knowledge Management System(KMS) is being built or built in many construction companies for their Competitive Power over expecting that KM leads to Managemental effective outcome and brings out profit. But the real aspects contrary to those Expectations and the outcome through KM dose not match the anticipant value. It is why most of them do not have a tendency to consider of besides of Computer system which are organization culture or cognition of members and think important of Computer System except others and the study on KM has not been enough. As those reason, there are little great managemental or administration growth through KM. On these problems this study has been started, and Organization Culture for KM's practical efficiency was treated and studied in the paper how to solve the problems and make KM effective.

• Bulletin of the Korean Space Science Society
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• 2003.10a
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• pp.81-81
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• 2003

We report the plasma blob events that were observed from KOMPSAT-1 (2250 LT, 685-km altitude) and from DMSP F15 (2130 LT,840-km altitude) in the low-latitude ionosphere. The global distribution of blobs showed a season-longitudinal dependence similar to the distribution of the equatorial plasma bubbles, although they were observed along the ${\pm}$15 dip latitudes. The blobs drifted upward relative to the ambient plasmas, and the electron temperatures and H+ proportions were lower within the blobs compared to those in the background. These characteristics of the plasma blobs are very similar to the characteristics of the equatorial plasma bubbles. Then, we suggest that the blobs were originated from the lower altitudes by the mechanism that drives an upward drift of the plasma bubbles. The blob events did not occur in a correlated way with the magnetic activity or daily variation of the solar activity.

• Journal of Ginseng Research
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• v.9 no.1
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• pp.72-85
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• 1985

Attempts were made to see if feeding of ginseng ethanol extract could affect proper- ties of rat brain lactate dehydrogenase such as specific activity, heat stability, Km for substrate, inactivation by 3-bromopyruvate and trypsin, and immune response. The following results were obtained. Specific activity of LDH was observed to reach maximum in 5 month after birth and then decrease steadily. However, that of LDH from rat fed with ginseng ethanol extract was found in rat fed with ginseng ethanol extract. 3-bromopyruvate was shown to inactivate LDH-5 from old rat fed. Inactivation of LDH-5 by trypsin was remarkable in old rat fed. Km value for pyruvate in old rat fed was remarkably decreased. Cumulative results suggest that ginseng ethanol extract could affect conformational change of LDH responsible for altered properties through unknown mechanism.

• Journal of The Korean Astronomical Society
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• v.29 no.2
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• pp.217-221
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• 1996

We have examined morphological change and movements of individual sunspots within a sunspot group in association with a large solar flare activity (3B/X1.5) appeared on 13 May 1981. For this purpose we measured distance among spots during the period before and after the flare activity and estimated the average velocity of their movement. Our main results are as follows: (1) The longitudinal displacement among sunspots are generally greater than the latitudinal displacement. (2) During the period the spots moved with an average velocity of 1.2 km/s in longitude and 0.86 km/s in latitude. (3) The most notable change took place in the central part placed between the two ribbons of the flare.

• Korean Journal of Food Science and Technology
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• v.8 no.4
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• pp.253-259
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• 1976

Two kinds of sepharose-bound pronases were successfully prepared. The immobilized pronase, directly coupled to cyanogen-bromide activated sepharose, retains 22.6% of original specific activity against casein. However, ${\omega}-aminoalkyl$ sepharose immobilized pronases, in which extension arms of ${\omega}-aminoalkyl$ group $(number\;of\;-CH_2-\;is\;8,\;10,\;and\;12)$ are used, retain almost 100% of original specific activity. Studies of enzyme stability, pH dependence, temperature dependence, and Km values are presented.

• Journal of Korean Society of Forest Science
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• v.84 no.2
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• pp.178-185
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• 1995

Air pollution effects on soil chemical properties, denitrifying and sulfur-reducing bacteria and lichens were examined around the Yeochun industrial estate. Soil samples were collected from mountain and/or mountain edges around the Namhae Chemical Corp., which is located at the southern edge of the estate, and sampled plots which were selected at 2km, 4km, 6km, 8km, and 10km apart from the industrial estate. The forest soils around the industrial estate could be classified into the Reddish yellow forest soil group, but soil pH was quite lower than the soils of the group. Because of the extremely low soil pH, microbial activity related to mineralization of organic matter was expected to be very low even though C/N ratio ranged from 15 to 20. As a result, soil organic matter and total nitrogen in soil were relatively high compared to the soils of the group. In general, soil chemical properties around the industrial estate up to 4km apart from the estate were significantly different from the rest(more than 6km apart from the estate) possibly due to air pollution. However, denitrifying bacteria and sulfur-reducing bacteria did not show significant differences in colony forming units by the distances from the industrial estate. By the way, lichens showed distinct differences in frequencies and coverages by the distances from the industrial estate possibly due to air pollution. The corticolous lichens showed more sensitive response to the air pollution compared to the saxicolous lichens.

• Journal of Aquaculture
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• v.22 no.1
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• pp.56-62
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• 2009

Effects of Korean mistletoe extracts (KM-110), Viscum album coloratum on the specific and non-specific immune responses of Japanese eel Anguilla japonica were examined. The optimal concentration not showing toxicity of KM-110 was determined to $30-40{\mu}g/ml$ in vitro and $100{\mu}g$/100 g of fish in vivo. Even $1000{\mu}g$ of KM-110/100 g of fish did not show any clinical problem in fish though the levels of toxic parameters were slightly increased. In terms of antibody production, KM-110 significantly elicited more antibody production than FCA or $\beta$-glucan. $\beta$-glucan plus KM-110 group synergistically enhanced antibody production. There was no significant difference between KM-110 and KM-110 plus $\beta$-glucan group. The ROI production by head kidney (HK) leucocytes of eel injected with 500 or $1000{\mu}g$ KM-110 was significantly (P<0.05) enhanced than the control and FCA-treated group. Maximum increase in the NBT reduction value was observed in $1000{\mu}g$ KM-110 group but no significant difference was found between 500 and $1000{\mu}g$ KM group. The level of serum lysozyme activity was significantly (P<0.05) higher in the 500 and $1000{\mu}g$ KM-110- or FCA-treated group than in the control and $200{\mu}g$ KM-110 group. The phagocytic activities of HK leucocytes isolated from eel injected with 500 and $1000{\mu}g$ KM-110 were significantly (P<0.05) higher than $200{\mu}g$ KM-110 and PBS-injected control group. Korean mistletoe appeared to be a good activator of the specific and non-specific immune responses of Japanese eel.

• Food Science and Preservation
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• v.6 no.2
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• pp.216-220
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• 1999

Lipoxygenase(LOX) activity of black rice(Chindo) was measured by spectrophotometric method at In m. Studies at different pH levels revealed that the optimal activity was exhibited at pH 7.0 with 24.97 unit/mg. Enzyme activity was tested at different concentration of the substrate. The apparent Vmax and Km values were determined from the Lineweaver-Burk plot to be 53.85 unit/mg and 0.21 mM. Enzyme activity due to storage temperature (-40, 4 and 25$^{\circ}C$) and period were decreased at all storage temperature. LOX activity of black rice was significantly decreased during the microwave heating.