• Korean Journal of Food Science and Technology
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• v.27 no.6
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• pp.834-838
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• 1995

The relative retrogradation of Jeungpyun investigated with different milling methods of rice flour. The relative retrogradation of Jeungpyun was reduced in order that of W-C, W-P, D-M, D-J in DSC(Differential Scanning Calorimetry) method while W-C, D-M, D-J, W-P in Diastase method. In wet milling method, the relative retrogradation of Jeungpyun by pin mill (W-P) was lower than Jeungpyun by colloid mill (W-C). In dry milling method, the relative retrogration of Jeungpyun by jet mill (D-J) was lower than Jeungpyun by micro mill(D-M). The relative retrogradation of Jeungpyun by DSC method was similar to the diastase method. The relative retrogradation of Jeungpyun was decreased with decreasing particle size and setback value for amylogram and increasing damaged starch.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.8 no.5
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• pp.504-515
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• 1997

In this paper, interference of non-GSO/MSS system into M/W radio stations has been analyzed as two aspects. One is that PDF(Power Flux Density) levels, which are received by M/W radio stations from non-GSO satellites, were simulated and compared with the threshold level specified in ITU-R SF.357. The other is that C/I values, which have been utilized in estimating interference between conventional fixed services, were simulated and analyzed by means of calculating excess time percent and duration below the C/I protection ratio. As the results, it was shown that interference levels received by M/W stations from non- GSO/MSS satellites don't exceed above the threshold level at all, even if changing parameters related with M/W stations. In addition, the excess percent time below the interference protection ratio is a long term of 32% in the case of Iridium interfering into a M/W stations route, but only a short term of 1.71% in the case of Globalstar interfering into a M/W stations route.

• Journal of Korean Ophthalmic Optics Society
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• v.5 no.2
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• pp.157-161
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• 2000

The Eye sensitivity in the difference conditions of a light source intensity consists of two functions by the receptor of cone and rod according to a wavelength. We derived a distribution function of $P({\lambda})=A{\cdot}e^{-({\lambda}-{\lambda}_0)^2/2W^2}$ using a respond probability of the receptor of cone-rod for a photon. It was well applied for a CIE eye's sensitivity curve of a wavelength, we obtained values in case of a relative sensitivity. A = 106.4, ${\lambda}_0=559.2$, W = 83.5 for a photopic and A = 99.3 ${\lambda}_0=502.6$, W = 79.5 for a scotopic, and in case of a sensitivity curve using 1m/W units. $A=7.2{\times}10^4$, ${\lambda}_0=559.2$, W = 83.5 for a photopic and $A=1.6{\times}10^5$, ${\lambda}_0=502.6$. W = 79.5 for a scotopic.

• Journal of IKEEE
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• v.21 no.3
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• pp.252-255
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• 2017

$Mo_xW_{1-x}Si_2$ heaters were fabricated by self-propagating high-temperature synthesis (SHS) process and post sintering process. To validate the reliability of the $Mo_xW_{1-x}Si_2$ heaters, the accelerated life test (ALT) was conducted, and then lifetime to $Mo_xW_{1-x}Si_2$ heaters was estimated by using Minitab programs. Also, the failure analysis of $Mo_xW_{1-x}Si_2$ heaters after ALT was performed through electrical and structural properties. As the results, it was confirmed that the dominant failure mode of $Mo_xW_{1-x}Si_2$ heaters is the crack formation in heaters and the delamination of protective $SiO_2$ layers.

• Analytical Science and Technology
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• v.29 no.4
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• pp.186-193
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• 2016

The whole herbs of solanum nigrum L were extracted in boiling water (SNL-W), and the extracts were separated with butyl alcohol fraction (SNL-W/B) and aqueous fraction (SNL-W/W) by the solvent extraction method. The total alkaloid and total saponin content mensuration were used to identify the alkaloid composition of methanol fraction extracted from the aqueous fraction. The venom of honey bee was used to induce the rat peritoneal mast cell to secreting the histamine. The results show that the water soluble alkaloid composition of solanum nigrum L (SNL-W/W/M) has a significant inhibitory effect on the histamine release.

• Journal of the Korean Society of Food Science and Nutrition
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• v.24 no.1
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• pp.82-91
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• 1995

This study was designed to elucidate the effects of lysozyme, clupeine, sucrose, and sodium chloride on the foaming properties of egg albumen and podered beef plasma. Surface tensions of egg albumen(5%, w/w) and powdered beef plasma(5%, w/w) adding to lysozyme, clupeine, sucrose, and sodium chloride were 46.8$\pm$0.379~52.4$\pm$ 0.404dyne/cm(control, 51.5$\pm$0.416dyne/cm) and 54.6$\pm$0.231~60.7$\pm$0.467dyne/cm(control, 53.9$\pm$0.153dyne/cm), respectively. Turbidities of the solutions were 77.0$\pm$0.058~97.9$\pm$ 0.058(control, 91.2$\pm$0.153) and 90.3$\pm$0.058~98.5$\pm$0.115 (control, 82.7$\pm$0.100), respectively. Surface hydrophobicities of the solutions were 524~811(control, 485) and 5102~ 7128(control, 4665), respectively. The solution with high hydrophobicity revealed good foaming properties. Analysis of egg albumen and powdered beef plasma foam by electrophoresis showed that lysozyme was retained for a long time in foam. The optimal concentraitons of lysozyme and clupeine for foaming properties were 0.5% and 0.3% in egg albumen(5%, w/w) and 0.5% and 0.5% in powdered beef plasma(5%, w/w), respectively. In case of egg albumen, sodium chloride dominantly enhanced the action of clupeine. The addition of 0.3% clupeine with sodium chloride(2.0M) to egg albumen(5%, w/w) increased overrun and foam stability by 119.5% and 70.9%, respectively. The addition of 0.5% clupeine to powdered beef plasma(5%, w/w) also increased overrun and foam stability by 43.7% and 127.3%, respectively.

• Preventive Nutrition and Food Science
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• v.4 no.3
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• pp.188-192
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• 1999

To study effects of methanol extract of prosomillet on lopid metabolism , five groups of male Sprang-Dawley rats weighing 116$\pm$9 g were fed test diets for four weeks. The five diets consisted of one low fat(5% w/w) diet containing starch as carbohydrate source(normal) and four high fat diets(15% w/w) containing 40.5%(w/w)sucrose(control) and additional 80% nethanol extractof prosomillet at the levels of 0.3% and 1%(w/w) or prosomillet powder at the level of 20%(w/w). Serum level of total cholesterol was a little higher but that of triglyceride was 41% lower in 20% (w/w) prosomillet powder group than in the control group. The cholesterol levels of two Liver cholesterol levels were lower and phospolipid levels higher in all three prosomillet powder group . Fecal excretionof bile acid was most increased in the prosomillet powder group among all five test groups. Acitivity of liver microsomal 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase was significantly lower in 0.3% methanol extract fed group than the control and also appeared to be reduced in 1% extract fed one, wherease those of 20 cholesterol 7$\alpha$-hydroxylase were not different among the five groups. Activities of liver cytosilic glucose-6-phosphate dehydrogenase(G6PDH) and malic enzyme were decreased in 0.3% prosomillet methanol extract and 20% powder groups. The results indicate that in addition to fiber, certain active components in prosomillet have potential to exert hypolipidemic effects via regulating hepatic cholesterogenesis and lipogenesis.

• Polymer(Korea)
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• v.38 no.1
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• pp.103-107
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• 2014

Poly(acrylonitrile-butadiene-styrene) (ABS) composite sheets containing titanium dioxide ($TiO_2$), barium sulfate ($BaSO_4$), calcium carbonate ($CaCO_3$) were prepared by using a co-rotating twin screw extruder, and the reflectance and flexural modulus of the composite sheets were measured. The fillers were well dispersed in ABS matrix. The reflectance of composite sheet was increased with increasing $TiO_2$ and $BaSO_4$ content. Sheet having $TiO_2$ 20 wt% composition, with 5~20 wt% $BaSO_4$ resulted in more than 95% of reflectance. The flexural modulus of composite sheet was increased from 1864 MPa for $ABS/TiO_2/BaSO_4$ 85/10/5 (w/w/w) to 3134 MPa for $ABS/TiO_2/BaSO_4$ 55/20/25 (w/w/w).

• Journal of Animal Science and Technology
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• v.63 no.4
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• pp.854-863
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• 2021

Weaning induces physiological changes in intestinal development that affect pigs' growth performance and susceptibility to disease. As a posttranscriptional regulator, microRNAs (miRNAs) regulate cellular homeostasis during intestinal development. We performed small RNA expression profiling in the small intestine of piglets before weaning (BW), 1 week after weaning (1W), and 2 weeks after weaning (2W) to identify weaning-associated differentially expressed miRNAs. We identified 38 differentially expressed miRNAs with varying expression levels among BW, 1W, and 2W. Then, we classified expression patterns of the identified miRNAs into four types. ssc-miR-196a and ssc-miR-451 represent pattern 1, which had an increased expression at 1W and a decreased expression at 2W. ssc-miR-499-5p represents pattern 2, which had an increased expression at 1W and a stable expression at 2W. ssc-miR-7135-3p and ssc-miR-144 represent pattern 3, which had a stable expression at 1W and a decreased expression at 2W. Eleven miRNAs (ssc-miR-542-3p, ssc-miR-214, ssc-miR-758, ssc-miR-4331, ssc-miR-105-1, ssc-miR-1285, ssc-miR-10a-5p, ssc-miR-4332, ssc-miR-503, ssc-miR-6782-3p, and ssc-miR-424-5p) represent pattern 4, which had a decreased expression at 1W and a stable expression at 2W. Moreover, we identified 133 candidate targets for miR-196a using a target prediction database. Gene ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses revealed that the target genes were associated with 19 biological processes, 4 cellular components, 8 molecular functions, and 7 KEGG pathways, including anterior/posterior pattern specification as well as the cancer, PI3K-Akt, MAPK, GnRH, and neurotrophin signaling pathways. These findings suggest that miRNAs regulate the development of the small intestine during the weaning process in piglets by anterior/posterior pattern specification as well as the cancer, PI3K-Akt, MAPK, GnRH, and neurotrophin signaling pathways.

• Journal of Korea Game Society
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• v.19 no.4
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• pp.77-84
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• 2019

Pay-to-Win (P2W) is a billing system that pays cash in-game and has a impact on results and it has been criticized by users. Research on the adolescent users and the effect of the P2W is insufficient. In this regard, this study compares the game billing in P2W and non-P2W based on self-esteem. As a result, systems showed the interaction effect on the game billing with the self-esteem. In the non-P2W, game billing increased when the self-esteem was high, whereas the billing increased rapidly as the self-esteem was low in the P2W.