• 한국자기학회:학술대회 개요집
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• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
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• pp.80.2-80.2
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• 2007

• 한국식품영양학회지
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• 제27권5호
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• pp.837-844
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• 2014

This study was carried out to analyze the differences in p-hydroxylbenzyl alcohol (HBA) content, antitumor and anti-obesity activities and tyrosinase inhibitory activity between non-fermented G. elata (NFGP) and fermented G. elata powder. The HBA content, which is an index-component of G. elata decreased from 1.58 mg/g before fermentation to 1.07, 0.32, and 0.13 mg/g after the $1^{st}$ fermentation ($1^{st}$ FGP), $2^{nd}$ fermentation ($2^{nd}$ FGP) and $3^{rd}$ fermentation ($3^{rd}$ FGP), respectively. The anti-proliferation effects on the cell lines HT29 and AGS were significantly higher for the fermented G. elata than the NFGP. The antitumor activity was also increased in a fermentation number-dependent manner. During adipocyte differentiation, the ethanol extract of the $3^{rd}$ FGP inhibited lipid accumulation in 3T3-L1 cells significantly better than NFGP and the $1^{st}$ FGP, treated at the concentration of $10{\mu}g/mL$. The tyrosinase inhibitory activity of the $2^{nd}$ FGP at $600{\mu}g/mL$ over was higher than that of kojic acid. At the concentration of $1,000{\mu}g/mL$, the tyrosinase inhibitory activity was increased in a fermentation number-dependent manner. From these results, the fermented G. elata, especially the $3^{rd}$ FGP, is expected to be good candidate for the development of functional food and agents with antitumor, anti-obesity, and tyrosinase inhibitory potential.

• 한국환경과학회지
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• 제22권12호
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• pp.1615-1624
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• 2013

The aims of this study were to investigate and confirm the occurrence and distribution patterns of blood lipid lower agents (BLLAs) in Nakdong river basin (mainstream and its tributaries). 4 (atorvastatin, lovastatin, mevastatin and simvastatin) out of 5 statins and 2 (clofibric acid and zemfibrozil) out of 3 fibrates were detected in 29 sampling sites and simvastatin (>50%) was predominant compound followed by atorvastatin, lovastatin and clofibric acid. The total concentration levels of BLLAs on April, August and November 2009 in surface water samples ranged from ND~25.7 ng/L, ND~18.8 and ND to 38.8 ng/L, respectively. The highest concentration level of BLLAs in the mainstream and tributaries in Nakdong river were Goryeong and Jincheon-cheon, respectively. The sewage treatment plants (STPs) along the river affect the BLLAs levels in river and the BLLAs levels decreased with downstream because of dilution effects.

• 대한화학회지
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• 제31권4호
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• pp.328-333
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• 1987

$C_18$ 역상 충전제에 1-eicosylsulfate($C_{20}H_{41}SO_4^-$)를 흡착하는 조건을 조사하였으며 $1.46{\times}10^{-4}M$의 흡착용액(25% 아세토니트릴 수용액) 1.2l를 통과시켰을 때 흡착평형이 일어났다. 이 분리관은 0.05 M ${\alpha}$-HiBA 용리액 10l까지 안정하였으며 Eu, Nd, Ce , La에 대한 분리관효율은 0.15M ${\alpha}$-HiBA 용리액 1.0ml/min에서 약 0.04 mm의 HETP를 나타내었다. 이 흡착분리관으로 희토류 원소 및 전이원소들을 개별 분리하였다.

• 한국정보통신학회논문지
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• 제16권8호
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• pp.1575-1580
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• 2012

본 논문에서는 차세대 유럽형 지상파 TV 표준으로 제정된 DVB-T2(Digital Video Broadcasting-the 2nd Generation Terrestrial) 수신기 설계를 위해 USB 기반 윈도우 환경에서 DVB-T2용 MPEG2-TS 스트림의 수신결과를 분석한다. DVB-T2 수신기의 수신 성능분석으로 파일 모드 및 이더넷 모드에서 수신한 스트림의 기저대역 프레임을 분석하고, BICM(Bit Interleaved Coding and Modulation) 수신모듈의 PLP(Physical Layer Pipe)와 L1(Layer 1) 신호에 대해 성능을 분석한다.

• 식품과학과 산업
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• 제55권1호
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• pp.33-44
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• 2022

More than 500 different compounds have been identified in the cooking process of frying oil as a result of chemical reactions such as oxidation, polymerization, hydrolysis and pyrolysis, 3-MCPDe(3-Monochloropropane -1,2-diol ester) and GE(glycidyl ester) are also included in these compounds. When MCPDe and GE derivatives are absorbed into the body, they are converted into free forms by lipase enzymes, which turn into 3-MCPD and glycidol(2,3-epoxy-1-propanol), respectively. These exhibit genotoxic and carcinogenic effects. As the toxicity of 3-MCPDe and GE is known worldwide, the health risk is being researched. However, regulations have not been established in countries other than the European Union(EU). Several studies for the analysis of 3-MCPDe and GE are being conducted, and direct methods and indirect methods are applied. As a result of analyzing 3-MCPDe and GE contained in commercially available foods by various analysis methods, the content of 3-MCPDe in baby food/infant formula was ND~600 ㎍/mL and GE was ND~750 ㎍/mL. and purified vegetable oils and fats showed <250-8,430 ㎍/mL and 1,880-9,530 ㎍/mL. Thus, 3-MCPDe and GE were detected in various food types, several studies for the reduction of 3-MCPDe and GE are being conducted around the world.

• 한국자동차공학회논문집
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• 제13권6호
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• pp.128-134
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• 2005

In order to fabricate the aluminum alloys with good drawability, the textures evolution of the AA5182 sheets after rolling and annealing was studied. The measurement of the deformation textures was carried out for the sheets which were cold rolled with high reduction ratio by using the symmetric roll. In addition, the change of the recrystallization texture was investigated after heat-treatments of the rolled sheets with various heat treatment conditions. Rolling without lubrication and subsequent annealing led to the formation of favorable $rot-C_{ND}\;\{001\}<110>\;and\;{\gamma}-fiber ND//<111>$ textures in AA5182 sheets. From the results, the ${\gamma}$-fiber ND//<111> component well evolved during rolling at highest reduction ratio (over $90\%$, l/d parameter of 6.77). Among shear deformation textures, the ${\gamma}$-fiber ND//<111> was not rotated in holding time of $180\~7,200$ seconds at $350^{\circ}C$. The Monte-Carlo technique was used and could be representatively simulated these textures evolution during recrystallization.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1997년도 추계학술대회 논문집
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• pp.120-123
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• 1997

In this paper, we deal with the effect on magnetic properties when Nd is added to Sr ferrite bonded magnet. First, we choose SrO$_{n}$.Fe$_2$O$_3$(n=5.9), which is nonstoichiomatric composition, as specimen ferrite. Then, we add 5wt% polyvinyl alcohol and calcinate at 12$25^{\circ}C$ under $N_2$ environment for carbon coating on chemical compound specimen. After that we obtain 1.2${\mu}{\textrm}{m}$ single domain powder through grinding process for 18 hours. The single domain Sr ferrite Powder is well mixed with silage coupling and calcium stearate of 1wt% Then, it is kneaded by using polyamide12 as a binder and is pelleted. After adding Nd-Fe-B powder to the pelleted specimen, we injection-mould it under magnetic field by using anisotropic mould. Especially, when we add l3wt% Nd-Fe-B powder to the polyamide12, we obtain excellent magnetic propertiecs which are $_{B}$H$_{C}$=2.65KOe, Br=3.16KG and (BH)$_{max}$=2.61MGOeOeOeOeOe

• 한국초지조사료학회지
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• 제21권4호
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• pp.181-190
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• 2001

This study was conducted to investigate the effect of swine liquid manure(SLM) and phosphorus fertilizer from September, 1998 to July, 1999 on the soil fertility on Italian ryegrass field, Cheju volcanic ash soil. pH(lst investigated), Mg (2nd investigated) and Cu content (2nd investigated) on soil grown by Italian ryegrass were significantly increased by an increase of fertilizer P(P

• 한국전기전자재료학회논문지
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• 제16권2호
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• pp.168-172
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• 2003

The electron transport coefficients in Air is analysed in range of E/Nvalues from 100~1000(Td) by a MCS and BE method. This paper have calculated W, ND$\sub$L/, ND$\sub$T/, Mean energy mixtures by N$_2$+O$_2$. The results gained that the values of the electron swarm parameters such as the electron drift velocity, longitudinal and transverse diffusion coefficients.