Imide 단위를 포함하는 Polyamide의 합성과 열적 성질

길덕수,배장순,공명선 단국대학교 신소재기술연구소 1997 신소재 Vol.7 No.-

Imide 단위를 포함하는 diamine과 dicarboxylic acid 단량체들, N-(4-aminophenyl)-4-aminophthalimide(1), N-(4-carboxyphenyl)-4-carboxyphthalimide(2), N,N'-oxydiphenylenebis(4-aminophthalimide)(3) 및 N,N'-oxydiphenylenebis(4-carboxyphthalimide)(4)를 합성하였다. 위의 단량체들은 서로 축합하여 imide 단위가 교대된 poly(imide-amide)s를 합성하였으며 imide 단위를 포함하는 diamine 단량체들은 terephthaloyl chloride, isphthaloyl chloride와 축합하여 또다른 poly(imideamide)s를 합성하였다. 이렇게 합성된 중합체들은 NMP/LiCl 용액에 매우 잘 용해하였으나 그밖에 극성 반양자성 용매인 DMF, DMSO 및 DMAc 등에는 낮은 용해도를 보여주었다. 고유 점성도는 0.15-0.51 dL/g 이었으며 NMP/LiCl 용액으로부터 단단하지만 취성이 있는 고체막이 형성되었다. 중합체들의 유리전이온도 및 융점은 관찰되지 않았으나 400℃ 부근에서 서서히 분해가 시작되었으며, 중합체들은 500℃에서 82-93%의 잔사량을 나타내어 우수한 열적성질을 보여주었다. Diamine and dicarboxylic monomers with imide linkage, N-(4-aminophenyl)-4-aminophthalimide(1), N-(4-carboxyphenyl)-4-carboxyphthalimide (2), N,N'-oxydiphenylenebis (4-aminophthalimide)(3) and N,N'-oxydiphenylenebis (4-carboxyphthalimide) (4) were prepared, and poly(amide-imide)s with ease processing characteristics were prepared from the monomers, 1-4 and terephthaloyl chloride or isophthaloyl chloride. Intrinsic viscosity of polymers was 0.15-0.51 dL/g and brittle hare films were obtained by casting the NMP/LiCl polymer solution on to glass plate. The poly (amide-imide)s are easily solubiel in NMP/LiCl and also in polar aprotic solvents such as DMF, DMSO, NMP and DMAc at 80℃. These polymers showed no glass transition temperature and melting temperature in their DSC thermograms. All the polymers decomposed at around 400℃ and 500℃ in nitrogen and had 88∼93% residual weight at 500℃.

共同住宅의 日照條件에 따른 物理的 環境에 대한 調査硏究 : 부산地域의 아파트를 中心으로 With Reference to Busan

金明鎭,姜丙熙,兪吉濬 동아대학교 환경문제연구소 1982 硏究報告 Vol.6 No.1

This study is on the standard of planning for apartment house by the present condition on pitch of building, duration of sunshine and make analysis of data for investigation of questionaire to dwellers and make measure about indoor environment. The conclusion is as follow; In order to secure desirable duration of sunshine and privacy of vision need to be reform more than 1.5H to more than 1.0H that is specified in the Present building law. So that will be making more comfortable environment of Apartment house.

間歇的 運動에 의한 脫水 및 水分攝取의 生理的 效果

朴哲浩,朴吉俊,李相于,金永明,朴贊熙,玄松子,呂南會,朴相甲,金榮俊 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-

This study aims at revealing the physiological responses of dehydration (DH) and rehydration (RH) in intermittent exercises at the work intensity of 70% HR max. First, with general student public, three times of exercise (each for 20 minutes) at the given work intensity were taken, with a break for 25 minutes respectively. Their heart rate, rectal temperature and plasma electrolyte concentration both DH and RH were measured. Second, in two groups of athletes and non-athletes, 9 rounds of exercise (for 100 minutes) and 8 breaks (for 60 minutes) were taken, with RH forced 10 times to compensate for the subjects' water loss. Their change in sweat loss and plasma electrolyte concentration as well as the IVDP(Intensive Voluntary dehydration Phenomenon) were experimented. The summary of this research follows. 1) Mean heart rate and rectal temperature in intermittent exercises were higher at DH than at RH, growing up at the increasing level of DH. 2) RH saw no change in the plasma concentration of Na+, K+ and Cl-, while DH observed a significant increase. 3) HCO₃made a significant decrease at DH before growing up. 4) Mg++ had no change, while Ca++ increased significantly at RH and DH. 5) Lactate showed an increase with significance at RH and DH, especially greater at DH. 6) Osmotic pressure increased meaningfully at DH. 7) Anion gap increased significantly at DH and RH. 8) On the other hand, when the forced RH was held, the group of athletes had greater sweat loss per body surface area than that of non-athletes. 9) The athletes' plasma concentration of Na+ and Cl- revealed a clear decrease. 10) There was seen no significant change in the plasma concentration of K+, Mg++ and Ca++ in both groups. 11) The IVDP occurred at the RH of 2.3ℓfor athletes and more than 2.5ℓfor no-athletes.

소양호의 어류군집 동태

최재석,이광열,장영수,고명훈,권오길,김범철 한국어류학회 2003 韓國魚類學會誌 Vol.15 No.2

2001년 4월부터 2002년 9월까지 소양호의 어류군집 동태를 조사한 결과는 다음과 같다. 조사된 어류는 총 11과 38종이었다. 한국 고유종은 P. tenuicorpus, C. splendidus, S. gracilis majimae, S. japonicus coreanus, H. mylodon, G. brevibarba, M. yaluensis, M. longidorsalis, C. koreensis, C. rotundieaudata, S. microdorsalis, P. koreanus, L. andersoni, C. herzi, O. patycephala 등 15종(40.54%)이었다. 우점종은 Z. platypus(39.60%), H. olidus(39.47%), S. gracilis majimae(12.24%), S. japonics coreanus(2.11%), P. fulvidraco(1.48%), L. macrochirus(1.40%) 등이었다. 채집된 어종들의 생체량을 보면 Z. platypus가 19.48㎏, H. olidus로 8.75㎏, C.cuvieri 7.42㎏, L. maeroehirus 7.39㎏, H. labeo 6.85㎏의 순으로 나타났다. 소양호에서 확인된 도입종은 A. japonica, H. eigenmanni, H. olidus, P. altivelis, C. urotaenius, R. giurinus, T. brevispinis, C. carpio(Israeli type), c. euvieri, Onchorhynchus mykiss, L. macrochirus, M. salmoides, I. puntatus 등 13종이었다. 이 중 C. carpio(Israeli type), C. cuvieri, Onchorhynchus mykiss, L macrochirus, M. salmoides, I. puntatus는 국외종이며, A. japonica, H. eigenmanni, H. olidus, P. altivelis, C. urotaenius, R. giurinus, T. brevispinis 등은 국내 다른 하천ㅇ로부터 유입된 종이다. The dynamics of the fish community in Lake Soyang, Korea, was investigated from April 2001 to September 2002. During the surveyed period 38 species belonging 11 families were collected. There were 15 Korean endemic species 39.47%, including Pseudopungtungia tenuicorpus, Coreoleuciscus splendidus, Squalidus gracilis majimae, S. japonicus coreanus, Hemibarbus mylodon, Gobiobotia brevibarba, Microphysogobio yaluensis, Microphysogobio longidorsalis, Iksookimia koreensis, Iksookimia rotundicaudata, Silurus microdorsalis, Pseudobagrus koreanus, Liobagrus andersoni, Coreoperca herzi, and Odontobutis platycephala. Dominant species were Zacco platypus (39.60%), Hypomesus olidus (31.70%), Squalidus gracilis majimae (12.24%), Squalidus japonicus coreanus (2.11%), Pseudobagrus fulvidraco (1.48%) and Lepomis macrochirus (1.40%). The biomass of collected fishes were Zacco platypus (19.48 ㎏), Hypomes olidus (8.75 ㎏), Carassilus cuvieri (7.42 ㎏), Lepomis macrochirus (7.39 ㎏) and Hemibarbus labeo (6.85 ㎏). Of the 13 introduced fishes in Lake Soyang Cyprinus carpio (israeli type), Carassius cuvieri, Onchorhynchus mykiss, Lepomis macrochirus, Micropterus salmoides and Ictalurus puntatus were originated from foreign countries but Anguilla japonica, Hemiculter eigenmanni, Hypomesus olidus, Plecoglossus altivelis, Chaenogobius urotaenius, Rhinogobius giurinus. Thridentiger brevispinis were introduced from other native river systems.

KODISA Journals and Strategies

Myoung-Kil Youn,Jong-Ho Lee,Young-Ei Kim,Hoe-Chang Yang,Hee-Joong Hwang,Dong-Ho Kim,Jung-Wan Lee 한국유통과학회 2015 유통과학연구 Vol.13 No.3

Purpose –The purpose of this study was to review and analyze the four major journals of KODISA and all of their published articles of 2014 and to revise and update the existing publication standards and practices in order to improve the overall quality and reputation of these journals. Research design, data, and methodology – This study applied an analytical approach, a case study method, to analyze and examine the published articles and the publication standards and practices of four KODISA journals, JDS (1999), IJIDB (2010), EAJBM (2011), and JAFEB (2014), from their first publication. Results – In 2014, KODISA journals published a total of 171 papers – JDS (122), IJIDB and EAJBM (16 each), and JAFEB (17): 94 articles in general business and 77 articles in economics. Conclusions – KODISA journals continuously revised and updated their publication standards and practices and adopted technological support systems to enable its journals to remain independent and open access in order to ultimately become one of the world’s reputable journals.

Water Extracts of Paecilomyces tenuipes Inhibit Cathepsin S-induced Adipocyte Differentiation in 3T3-L1 Cells

Kil-Sun Myoung,Jung-Hee Lee,Kwang-Sei Lim,Chul-Sung Huh 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.1

Cathepsin S is a cysteine protease that affects extracellular matrix remodeling. Recently, several studies have reported that cathepsin S is involved in obesity. Both mouse and human adipose cells produce this enzyme in the early phase of adipocyte differentiation, where it degrades fibronectin. Cathepsin S gene expression is elevated in the adipose tissue of obese mice as compared to that of lean mice. Paecilomyces tenuipes water extracts (PTW) are shown to have an inhibitory effect on cathepsin S activity. In this study, Z-Val-Val-Arg-MCA was used as a cathepsin S-specific substrate in order to examine inhibitory effect of PTW. Supplementing 3T3-L1 cell media with PTW clearly reduced lipid droplet accumulation and cathepsin S-induced adipogenesis. Furthermore, PTW decreased weight gain, subcutaneous adipose tissue growth, the level of serum triglyceride, and total cholesterol in mice fed a high-fat diet. These data suggest that PTW work against adipose cathepsin S and presumably contribute to anti-obese activities.

2023 KODISA Journals Strategy Editor's meeting for SSCI & SCOPUS registration (AJBE, JIDB)

Myoung-Kil Youn 한국유통과학회 2023 International Forum on Business Convergence (IFBC) Vol.2023 No.-

Strategies for globalization of journals: Focused on KODISA journal

Myoung-Kil Youn,Dong-Ho Kim 한국유통학회 2019 International Forum on Business Convergence (IFBC) Vol.2019 No.-

Development of journals plays the most important role at the phase of scientific society. KODISA has reached the highest phase to grow up and to be the best scientific journal. The members of globalization made cooperation system to do it. In the beginning, they asked scholars to collect theses and to overcome limitation of domestic scientific journals. A lot of scholars at overseas contributes theses to JDS, EAJBM, IJIDB, and JAFEB to register JDS and JAFEB to SCI class journal and to do EAJBM and IJIDB to SCOPUS sooner or later. SSCI registration may be more important to be likely to produce good result considering investigation by JDS, JAFEB, and EAJBM. KODISA shall globalize the journal and make effort to keep the best quality based on transparent management and fair compensation. KODISA shall have organization of working manager on the spot to give monetary compensation enough. ‘333’ policy shall develop KODISA (3.3: academy and editing, 3.3: operation, 3.4: donation to foundation). Not only (society) is separated from journal (foundation) to operate independently. The system has been made to develop in the future. All of KODISA members have joined in the system to develop continuously. Four of direct management journals have been normalized to have no problem, and seven of partner journals at the stage of development require continuous investment. Contribution to the foundation has been suspended until normalization to concentrate on the investment.

2020년 KODISA 학술지 세계화 전략

윤명길(Myoung-Kil YOUN),이정완(Jung-Wan LEE) 한국유통학회 2020 International Forum on Business Convergence (IFBC) Vol.2020 No.-

KODISA 저자표시와 연구윤리방안

윤명길(Myoung-Kil YOUN),김동호(Dong-Ho KIM) 한국유통학회 2020 International Forum on Business Convergence (IFBC) Vol.2020 No.-