• Korean Journal of Food Science and Technology
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• v.28 no.1
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• pp.152-156
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• 1996

Taste components of traditional kochujang from 55 households were investigated. The major free sugars in traditional kochujang (fermented hot pepper-soybean paste) were glucose $(8.21{\pm}5.62%)$ and maltose $(6.95{\pm}7.27%)$ and the minors were fructose $(1.88{\pm}1.27%)$ and sucrose $(1.05{\pm}1.21%)$. Succinic $(901.83{\pm}826.23\;mg%)$, citric $(484.16{\pm}242.89\;mg%)$ and lactic $(381.63{\pm}367.88\;mg%)$ acids in traditional kochujang were found in large amounts and acetic, oxalic, and formic acids in smaller amounts. The traditional kochujang contained large amounts of proline $(10.66{\pm}6.27\;mg%)$, glutamic acid $(9.27{\pm}10.97\;mg%)$, aspartic acid $(9.14{\pm}5.84\;mg%)$, lysine $(6.19{\pm}6.66\;mg%)$, and serine $(5.72{\pm}3.79\;mg%)$, and the total free amino acid content was 64.35mg%. Among the nucleotides and their related compounds in traditional kochujang, CMP $(42.90{\pm}28.16\;mg%)$ were the most abundant major compounds and hypoxanthine $(6.86{\pm}3.45\;mg%)$, IMP $(5.59{\pm}5.84\;mg%)$, inosine $(4.58{\pm}6.91\;mg%)$ and GMP$(3.36{\pm}3.93\;mg%)$ were found in smaller amounts, and AMP and UMP were also found in minor.

• Journal of the Korean institute of surface engineering
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• v.37 no.2
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• pp.99-109
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• 2004

The effect of trace metallic additives on microstructure, glossiness and hardness of Zinc electrodeposits was investigated by using sulfate bath and flow cell system. The preferred orientation of Zn deposits with Mg-Fe additives was (10$\ell$)+(002) mixed texture, while that of Zn deposits with Mg-Fe-Cr additives was ( $10\ell$). The preferred orientation of Zn deposits with Mg-Fe-X(X:Ni,Co) additives changed from ($10\ell$)+(002) to ($10\ell$) with increasing Mg additive from 5 to 10 g/$\ell$. The surface morphology of the Zinc deposits was closely related to the preferred orientation of the deposits. The glossiness of Zn deposits with Mg-Fe additives was similar to that of pure Zn deposit. The glossiness of Zn deposits with Mg-Fe-X(X:Ni,Cr) additives was lower than that of Zn deposits with Mg-Fe additives, while that of Zn deposits with Mg-Fe-Co additives was higher than that of Zn-Mg-Fe deposits. The hardness of Zn deposits with Mg-Fe-X(Ni,Co,Cr) increased with current density and amount of Mg additive. Hardness of Zn deposits was decreased and increased in comparison with Zn-Mg-Fe deposits for Mg-Fe-Co and Mg-Fe-Cr additives, respectively.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.8 no.4
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• pp.573-580
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• 1998

Self-propagating high temperature synthesis (SHS) technique was used to synthesize the spinel phase of $MgAl_2O_4$ from MgO and Al powder. Thermit reaction products of MgO and Al, The reaction products were heat treated at the temperature $800^{\circ}C$ preheating. Processing factors such as DTA/TG, combustium product and maxium temperature, synthesis of MgO and Al from "$MgO+2Al+3/2O_2$\rightarrow$MgAl_2O_4$". An activation energy (${\Delta}H^{\circ}$)-264.8 kcal/mol and reaction of maxium temperature 5634 K was calculated to form a $MgAl_2O_4$ spinel from unreacted materials. Pellet were increased volume 6% after thermit reaction. reaction.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1994.04a
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• pp.332-332
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• 1994

식이습관을 바꾸지 않는 상태에서 4주간의 placebo 투여후 혈청 Total-C치가 240mg/dl 이상인 원발성 고콜레스테 혈증환자 25예씩 두군으로 하여 제1군은 lovastatin 20mg에서 80mg을 1일 1회 저녁에 12주간 투여하였고, 제2군은 pravastatin 5mg을 12주간 아침 저녁으로 2회 경구 투여하였다. Lovastatin과 pravastatin 12주 투여후 혈청 Total-C치는 309$\pm$46mg/d1에서 201$\pm$37mg/d1로, 281$\pm$41mg/d1에서 218$\pm$31mg/d1로, 혈청LDL-C치는 230$\pm$46mg/d1에서 125$\pm$40mg/d1로, 199$\pm$46mg/d1에서 137$\pm$37mg/d1로 각각 유의하게 감소 하였다. (p < 0.005)혈청 Apo B치는 183$\pm$32mg/d1에서 114$\pm$26mg/d1로, 164$\pm$38mg/d1에서 123$\pm$20mg/d1로, 혈청 Apo B / Apo A-1 ratio는 1.6$\pm$0.4에서 1.0$\pm$0.3으로, 1.4$\pm$0.5에서 1.0$\pm$0.3으로 각각 유의하게 감소하였다. (p < 0.005) Lovastatin 및 pravastatin 투여후 임상적으로 의미있는 중상이나 검사상 이상 소견은 관찰되지 않았다.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.19 no.6
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• pp.324-327
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• 2009

In the present study, the effect of Ca additions on the ignition and combustion behaviors of Mg alloys has been investigated. Cracks and inclusions were observed at the free surface and interior in as-cast pure magnesium but not in Ca-bearing Mg alloys. There was a tendency that ignition temperature rapidly increased with increasing Ca content in Mg-Ca alloy. Saturated composition for increasing of ignition temperature was related with solid solubility of Ca in Ca-bearing Mg alloys. The protective oxide layers, MgO, could also be found on the combustion surface of Ca-bearing magnesium alloy.

• Journal of Korea Foundry Society
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• v.27 no.3
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• pp.126-130
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• 2007

Oxidation behavior of CaO added Mg and Mg-5Al alloys was investigated. At $500^{\circ}C$, oxidation rate of pure Mg was abruptly increased, while that of CaO added Mg was remarkably reduced with increasing CaO content. As a result of surface analysis by AES, there was the thin oxide layer mixed with MgO and CaO in CaO added Mg. Oxidation behavior of CaO added Mg was similar to that of Ca added Mg. Oxidation rate of 0.6CaO added Mg-5Al alloy was much lower than that of Mg-5Al alloy at $500^{\circ}C$ and both alloys showed the linear weight change at $400^{\circ}C$.

• Korean journal of food and cookery science
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• v.14 no.5
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• pp.509-512
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• 1998

Changes in the contents of stachyose and raffinose were determined during soybean fermentation. ${\alpha}$-Galactosidase activities were also monitored in soybean and its fermented products. The stachyose contents were 31.8239 mg/g of soybean, 4.2217 mg/g of Meju, and 2.1184 mg/g of Doenjang. The raffinose contents were 2.6914 mg/g of soybean, 1.7413 mg/g of Meju, and negligible of Doenjang. ${\alpha}$-Galactosidase activities was distinct in soybean and Meju. They were 14.5954 units/mg protein of soybean, 13.1489 units/mg protein of Meju, and 1.9157 units/mg protein of Doenjang. The results suggested that the decrease of stachyose and raffinose contents in fermented soy products were due to the ${\alpha}$-galactosidase activity.

• Resources Recycling
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• v.6 no.4
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• pp.31-37
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• 1997

The Mg-ferrite powders were recovered from acid leaching Mg waste by hydrothermal method. Recovering conditions ofMg-Ferrite were investigated m this system and the powders prepared were characterized, using X-ray analysis, chemicalanalysis, SEM. TEM, and VSM. In this study, pH of solution and the kind of neutralizer wcre important factors on thecharacteristics of the product. The optimum condition of recovering MgPenite was the mole ratio of Fe" : Mg"=2'1, reactiontemperature : ZOWC, reaction time.lhr, at pH=lZ, and Oi partial pressure af 2000 psi. And the powders ~ccovered have amonodispersed and spherelike shapes with the narrow sue distribulion.ow sue distribulion.

• Korean Journal of Metals and Materials
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• v.50 no.2
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• pp.183-190
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• 2012

Hydrogen was generated by the reaction of metal hydride with water. The variation of hydrogen generation with the kind of powders (milled $MgH_2$, and $MgH_2$ milled with various contents of MgO, $MgCl_2$ or $Ni+Nb_2O_5$) was investigated. $MgH_2$ powder with a hydrogen content of 6.05 wt% from Aldrich Company was used. Hydrogen is generated by the reaction of Mg as well as $MgH_2$ with water, resulting in the formation of byproduct $Mg(OH)_2$. For about 5 min of reaction time, milled $95%MgH_2+5%MgO$ has the highest hydrogen generation rate among milled $MgH_2+x%MgO$ (x=0, 5, 10, 15 and 20) samples. Milled $90%MgH_2+10%MgCl_2$ has the highest hydrogen generation rate among all the samples.

• Journal of the Korean Ceramic Society
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• v.31 no.11
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• pp.1299-1306
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• 1994

Effect of MgO content on microstructural evolution and microwave dielectric properties of Ba(Mg1/3Ta2/3)O3 system was investigated. MgO content was varied from 10 mol% deficiency to 10 mol% excess of stoichiometric composition, respectively. It was found that MgO-deficient specimen showed faster grain growth rate than stoichometric and MgO excess BMT system. Besides, sandwich type precipitates of Ba5Ta4O15 which was formed within the BMT grain, might lead to the anisotropic grain growth of BMT grain. On the contrary, in MgO excess specimen, BMT grain growth rate was retarded by precipitations of MgO phase in grain boundary. Besides, the Q values of MgO-deficient showed lower than MgO-excess due to precipitations of Ba5Ta4O15 within BMT grain.