고급지방산 메틸 에스테르류의 합성 및 소포특성

박종권,김아람,황준배,정노희,Park, Jong-Kwon,Kim, A-Ram,Hwang, Jun-Bae,Jeong, Noh-Hee 한국응용과학기술학회 2015 한국응용과학기술학회지 Vol.32 No.1

고급지방산 메틸 에스테르류의 소포제를 합성하고 FT-IR과 $^1H-NMR$ 분석을 통해 확인하였다. FT-IR을 이용하여 합성된 물질의 특징인 -C=O기는 $1740cm^{-1}$ 부근에서, 그리고 C-O기는 $1175cm^{-1}$ 피크 값을 가지는 것을 확인하였다. 또한 $^1H-NMR$ 분석을 통해 에스테르의 -C=O의 Chemical shift가 2.29 ppm에서 나타나는 것을 확인하였다. 표면장력은 Surface Tensiometer CBVP-43을 이용하여 측정하였다. 표면장력은 17.7에서 21 dyne/cm 값을 가진다. SLS 수용액에서의 소포능은 Ross-Miles법을 통해 측정되었다. 4종류의 소포제 중 소포능은 스테아르산메틸을 이용하여 제조한 소포제가 가장 뛰어난 것으로 측정됐다. In this study, anti-foaming agents of a fatty acid methyl esters was synthesized and confirmed by FT-IR and $^1H-NMR$ spectroscopy. Synthesized material of characteristic of -C=O group having a $1740cm^{-1}$ and -C-O group $1175cm^{-1}$ peak by using FT-IR, and it was confirmed that k. Surface tensions were measured by surface tensiometer CBVP-43. Their surface tension values was 17.7 to 21 dyne/cm. Anti-foaming abilities in the SLS solution was measured through the Ross-Miles method. Performance of the 4 type of anti-foaming agent was determined and the best anti-foaming agent was prepared using stearic acid methyl.

이기종 네트워크에서 통신을 위한 DTN 보안 메커니즘에 관한 연구

박종권(Jong Kwon Park),홍충선(Choong Seon Hong) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.11

DTN 에서 보안 강화를 위한 Queue 관리 방법

박종권(Jong Kwon Park),홍충선(Choong Seon Hong) 한국통신학회 2010 한국통신학회 학술대회논문집 Vol.2010 No.11

심내막염에 속발한 상장간막동맥의 진균성 동맥류 1예

박종권(Jong-Kwon Park),이형근(Hyoung Guen Lee),정민(Min Jung),박동국(Dong Guk Park),김정택(Jung Taik Kim),김덕환(Duck Hwan Kim) 대한외과학회 1998 Annals of Surgical Treatment and Research Vol.55 No.1

레몬그라스 오일을 함유하는 PCL마이크로캡슐의 특성과 방출거동

박종권 ( Jong Kwon Park ),김지은 ( Ji Eun Kim ),정노희 ( Noh Hee Jeong ) 한국공업화학회 2015 공업화학 Vol.26 No.3

In this study, poly ε-caprolactone(PCL) microcapsules containing lemongrass oil was prepared by the solvent evaporation method. Effects of concentrations of PCL and poly vinyl alcohol (PVA) as well as stirring speeds when preparing microcapsuleswere investigated. Specific peaks of lemongrass oil in PCL microcapsules at 1600 and 2900 cm-1 were observed by FT-IR. The particle size and shape of microcapsules were also measured by polarizing microscope and optical microscopy. The average particle size of microcapsules decreased with increasing the stirring rate. At the stirring speed of 1500 rpm, and 1 wt% of each PCL and PVA concentrations, the smallest particles were formed. Collection efficiencies of lemongrass oil of 77.5% and 69.5% were obtained when 1.5 wt% of PCL and 2 wt% of PVA were used, respectively. In addition, the release behavior and antioxidant activity of lemongrass oil from PCL microcapsules were examined using UV-Vis spectrophotometry. When 0.5 wt% PCL and 2.0 wt% PVA were used with the slow stirring rate, microcapsules showed a fast release rate. The characteristics of antioxidant activity exhibited similar to that of the release behavior.

계면활성제의 종류에 따른 수성 아크릴 접착제의 물성변화

박종권 ( Jong-kwon Park ),정노희 ( Noh-hee Jeong ) 한국공업화학회 2017 공업화학 Vol.28 No.4

본 실험은 다양한 계면활성제를 이용해 수성 아크릴 에멀젼 접착제를 제조하고 그 특성을 조사하였다. 제조한 접착제의 특성으로 고형분, 전환율, 입도분포, 초기접착력 등의 물성을 통해 비교하였다. 접착제의 고형분을 측정한 결과는 60% 이상의 높은 값을 나타냈으며 에멀젼 중합의 전환율은 합성한 계면활성제를 2 wt% 농도로 첨가하였을 때 97%로 측정되었다. 입도분포의 분석 결과는 양이온 계면활성제를 첨가한 경우에 290∼470 nm의 작은 입자의 접착제가 제조되었고 초기접착력과 접착 발현시간 또한 증가되었다. 최대 접착력은 단일의 계면활성제(POE 23)를 사용했을 때 2.55kgf의 값을 나타냈고 다른 계면활성제를 사용한 경우보다 뛰어나다는 것을 알 수 있었다. 양이온 제미니 계면활성제를 첨가하여 제조한 접착제의 부식방지력은 48 h 동안 유지되는 것을 확인할 수 있었다. In this study, aqueous acrylic emulsion adhesives were prepared using various surfactants and their properties were also investigated. Solids content, conversion, particle size distribution and initial adhesion properties of the prepared adhesives were compared with each other. The solid content of the adhesives was evaluated 60% and the conversion rate of the emulsion polymerization was 97% at 2 wt% concentration of synthesized surfactants. The particle size distribution analysis revealed that the size distribution of adhesive particles was 290∼470 nm when the synthesized cationic surfactant was added. The initial adhesion and adhesion time were also improved. The maximum adhesive strength was found to be 2.55 kgf when using a single surfactant (POE 23), and superior to that of using other surfactants. It was confirmed that the corrosion inhibition of the adhesive prepared by adding the cationic gemini surfactant was maintained for 48 hours.

생쥐의 췌장도세포추출을 위한 콜라겐분해효소 용액 주입 시 쓸개와 총담관 경로의 비교

박종권(Jong Kwon Park) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.73 No.1

Purpose: A high yield of viable pancreatic islets is an essential prerequisite for the study of pancreatic islet transplantation. The purpose of this study is to compare the yield between intra-gall bladder (intra-GB) and intra-common bile duct (intra-CBD) injection of collagenase solution for isolation of mouse pancreatic islets. Methods: The mice were divided into two groups, the intra-GB and intra-CBD groups, and each group included twelve mice, respectively. Collagenase solution was injected via the gallbladder in the intra-GB group mice, while this was done via the common bile duct in the intra-CBD group. After removal and digestion of the mouse pancreases, the pancreatic islets were isolated by Ficoll density gradient centrifugation and hand picking. Results: The intra-GB group yielded 121.67±39.86 IEQs, and the intra-CBD group reveled 168.17±29.23 IEQs. There was a statistically significant difference in islet yield between the two groups (P=0.005, Mann-Whitney Test). The purities of the isolated islets were 86.42±3.99% for the intra-GB group and 87.17±4.47% for the intra-CBD group, and there was no difference between the two groups (P=0.755, Mann-Whitney Test). Conclusion: Both the intra-GB and intra-CBD groups yielded an average of >120 IEQs. However, the intra-CBD group revealed a higher yield than the intra-GB group for isolating mouse pancreatic islets.

얇은 막 수화법을 이용한 리포좀의 제조 및 물성

박종권 ( Jong Kwon Park ),정현욱 ( Hyeon Wook Jeong ),정노희 ( Noh Hee Jeong ) 충북대학교 산업과학기술연구소 2014 산업과학기술연구 논문집 Vol.28 No.1

Liposomes has a number of advantages activation, targeting a good compatibility. low toxicity, the immune system activation, so that research in Drug Delivery System is active. However, Liposomes have a number of problems like low emulsion stability, low encapsulation efficiency of the active ingredient and the structure by the external environment like pH, salt, a surfactant, is destroyed easily. This study have prepared liposomes and examined the changes in encapsulation efficiency according to the molar ration of the phosphatidylcholin and surfactant i have prepared liposome in mixture of cationic surfactant CTAB and phosphatidylcholine by the molar ratio of 90:1 from 60:1 This study have prepared liposome in mixture of nonionic surfactant NP-POE(9) and phosphatidylcholine by the molar ratio of 9:1 from 6:1 As a result. liposomes prepared with phosphatidylcholine alone showed a encapsulation efficiency of 67.40%. Encapsulation efficiency of liposomes mixed CTAB at a molar ratio of 90:1 showed the highest encapsulation efficiency 89.08%. Encapsulation efficiency of liposomes mixed NP-POE(9) at a molar ratio of 9:1 showed 66.56%.

이혼에 따른 재산분할의 합리적 산정

박종권 ( Park Jong-kwon ) 한국외국어대학교 법학연구소 2007 외법논집 Vol.26 No.-

The forms of legislation on Property division are different from country to country, but roughly divided into two forms; one is the legislation giving judges broad discretion about deciding the proportion of property division, and the other the legislation that has fixed rules. They have their own efficiencies and deficiencies, so, more important thing is keeping balance between the two extreme poles. The right of claim for the division of property means that each party, in a divorce suit, claims to the other an appropriate division of the property accumulated during their marital life. In general, this claim is required to recognize the couple’s substantial contribution to the accumulated property, regardless of its being in husband or wife’s name, and guarantee the equality between the sexes during their marital life. The claim for the division of property should be discussed together with the matrimonial property system since they are mutually dependent. In the latter, the common property system makes it possible that the property is appropriately divided for the party according to principles of the equality between the sexes in a divorce suit, whereas the separate property system does not. This claim for the division of property has almost the same effect as the common property system, and is also very useful since it maintains that each party should be responsible for supporting the other who gets into destitution after divorce, but Korea has not. And so, it would be desirable that the claim stipulated in Sub-Sec. 2 of Sec. 839 of the Korean civil law should be adaptable interpreted in terms of general principles of the responsibility for supporting after divorce. Korean Civil Cede has only one article about property division giving judges broad discretion. But before changing the law, we have to arrive the social consensus on equal division and the family courts have starting point of equal division when determining the proportion of property division, and such court decisions be supported by social consensus. Consequently, we have to pursue both the reform of legislation and the social change toward the equal division.

서울의 소매용 부동산 시장에서 자본자산가격결정모형(CAPM)의 적용

박종권 ( Park Jong Kwon ),이재수 ( Lee Jae Soo ),전재범 ( Jun Jae Bum ) 한국감정평가학회 2016 감정평가학논집 Vol.15 No.2

본 연구는 최근에 간접투자상품의 기초자산으로서 그 효율성과 투자성과를 인정받고 있는 상업용 부동산 중 소매용 부동산 시장을 중심으로 서울시 권역별 시장의 위험-수익률간의 관계 및 효율성을 파악하는 것을 목적으로 한다. 이를 위하여 위험을 수반하는 자본자산의 가격결정을 위한 모형인 자본자산가격결정모형(Capital Asset Pricing Model, 이하 CAPM)을 토대로 시장의 이론적 균형과 서울의 소매용 부동산 시장 자산 간의 위험-수익률에 대한 차이를 확인 및 분석함으로써 실물자산인 소매용 부동산 시장에 대한 이해의 폭을 넓히고 효과적인 투자를 위한 기초자료 및 시사점들을 제공하고자 한다. 분석결과, FM모형에 의하면 기타권역을 제외한 강남권(GBD), 마포·신촌권(SBD), 그리고 도심권(CBD)은 시장의 효율성을 지니고 있었으며, BJS 모형에 의한 서울 소매용부동산 시장의 4개 권역은 CAPM의 이론적 균형시장과는 일치하지 않았다. 이는 기타권역을 제외한 서울의 권역별 소매용 부동산 시장은 체계적 위험이 증가할수록 높은 수익률을 제공하여 투자의 원칙이 통용되는 효율적 시장이었으며 서울의 권역별 소매용 부동산 시장은 토지 및 주택시장과는 달리 부분적으로나마 합리적으로 자본-자산(Capital-Asset)을 거래하는 부동산 시장임을 의미한다. This study aims to find out the efficiency and the impact of systematic risk on risk-premium in Seoul``s retail real estate market. To do so, this study analyzes the differences between regional retail real estate markets in Seoul and market equilibrium based on CAPM(Capital Asset Pricing Model), thereby providing some meaningful results and implications for effective investment. Specifically, this study seeks to figure out whether there exists any positive-linearity between systematic risk and risk-premium with Fama and MacBeth(1973) model and to compare the market equilibrium based upon CAPM with four sub-retail real estate markets in Seoul, GBD, SBD, CBD, and Other Business District, by using Black, Jensen, and Scholes(1972)``s model. Finally, some findings given from this study are as follows. First, as for Fama and MacBeth model, there are positive linear-relationships between systematic risk and risk-premium in all business districts apart from Other Business District. Second, with Black, Jensen, and Scholes model, impact of systematic risk on risk-premium at all Business districts(GBD, SBD, CBD, and Other Business District) are not consistent with those of market equilibrium of CAPM, which means capital-asset could be fairly priced only at GBD, SBD, and CBD.