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Synthesis of Star-like Random Copolymers from Resorcinarene-Based Octa-Functional Alkoxyamine Initiator via Nitroxide Mediated Free Radical Polymerization
Abraham. Sinoj, Choi. Jae-Ho, Lee. Jin-Kyu, Ha. Chang-Sik, Kim. Il 한국고분자학회 Macromolecular research 6 Pages
한국고분자학회 Macromolecular research 2007, Vol.15 No.4 324-329 (6 pages)
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Sequence analysis of the S1 glycoprotein gene of infectious bronchitis viruses: identification of a novel phylogenetic group in Korea
Ji-Hyun Jang, Haan-Woo Sung, Chang-Seon Song, Hyuk-Moo Kwon* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2007, 제 8권 제 4호 13 401-408 (8 pages)
Twelve Korean infectious bronchitis viruses (IBVs) were isolated in the field from chickens suspected of being carriers of infectious bronchitis between 2001 and 2003. The S1 glycoprotein genes of these IBV isolates were amplified by reverse transcriptase-polymerase chain reaction (RT- PCR) and analyzed by restriction fragment length polymorphism (RFLP) analysis. These Korean IBV isolates were classified into three groups according to their RFLP patterns obtained using the restriction enzyme... -
기계적 및 열적 피로가 교정용 접착제의 결합강도에 미치는 영향
신완철(Wan-Cheal Shin), 김종성(Jong-Sung Kim), 김정기(Jong-Ghee Kim) 대한치과교정학회 The Korean Journal of Orthodontics 12 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1996, 제 26권 제 2호 5 175-186 (12 pages)
본 연구의 목적은 기계적 및 열적피로가 전단결합강도에 미치는 영향을 알아 보기 위한 것이다. 3종의 비반죽형 접착제(Ortho-one, MonoLok², System 1+)로 mesh형의 금속 브라켓(Ormesh)을 교정목적으로 발거된 소구치의 법랑질면을 평탄하게 한 후 부착하고 100만회의 반복비틀림과 1,000회의 thermocycling을 가하였다. 그 후 Instron을 이용하여 전단결합강도를 측정하여 다음과 같은 결과를 얻었다. 1. 접착제의 Knoop 경도치는 thermocycling전에는 Monolok²가 64.03kg/mm²으로 가장 크고, System 1+가... -
세라믹 브라켓과 교정용 접착제에 따른 전단 결합 강도의 비교 연구
이주원(Joo-Won Lee), 유동환(Dong-Hwan Yoo), 김상철(Sang-Cheol Kim) 대한치과교정학회 The Korean Journal of Orthodontics 12 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1997, 제 27권 제 2호 12 315-326 (12 pages)
여러 세라믹 브라켁과 접착제에 따른 전단 결합 강도를 비교하기 위하여, 영구 소구치 48개를 대상으로 베이스이 유지 형태가 다른 3종의 세라믹 브라켓을 광중합과 화학 중합을 포함한 3종위 교정용 접착제를 사용하여 접착하고 전단 결합 강도와 파절 양상을 관찰한 결과, 화학 중합형 레진으로 접착한 경우 광중합형으로 접착한 경우보다 결합 강도가 높았으며, 화확적 결합을 하는 Starfire 브라켓이, 기계적 결합을 하는 Transcend나, 복합형 결합인 Fascination보다 전단 결합 강도가 낮았다. Trascend는 주고 법랑질과... -
Rapid Measurement of NH3 and Weak Acid Permeation Through Liposomes and Renal Proximal Tubule Membranes
Bae, Hae-Rahn, Suh, Duck-Joon, Lee, Sang-Ho 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 11 203-214 (12 pages)
Using the methods of stopped-flow and epifluorescence microscopy with entrapped fluorophore, membrane permeability of NH3 and weak acids in liposomes, renal brush border (BBMV) and basolateral membrane vesicles (BLMV), and primary culture cells from renal proximal tubule was measured. Permeability coefficient (cm/sec) of NH3 was (2.9 X 10-2 in phosphatidylcholine liposome 25℃), 5.9 X 10-2 in renal proximal tubule cell (37℃), 4.0 X 10-2 and 2.4 X 10-2 in BBMV and BLMV (25℃), respectively.... -
Open Access : Molecular Characterization and Variation of the Broad bean wilt virus 2 Isolates Based on Analyses of Complete Genome Sequences
한국식물병리학회 The Plant Pathology Journal 13 Pages
한국식물병리학회 The Plant Pathology Journal 2013, 29권 4호 5 397-409 (13 pages)
The full-genome sequences of fourteen isolates of Broad bean wilt virus 2 (BBWV2), collected from broad bean, pea, spinach, bell pepper and paprika plants in Korea during the years 2006-2012, were determined and analyzed comparatively along with fifteen previously reported BBWV2 genome sequences. Sequence analyses showed that RNA-1 and RNA-2 sequences of BBWV2 Korean isolates consisted of 5950-5956 and 3568-3604 nucleotides, respectively. Full-length genome sequencebased phylogenetic analyses... -
Improving dispersion of multi-walled carbon nanotubes and graphene using a common non-covalent modifier
Youbin Kwon, Wonbo Shim, Seung-Yeol Jeon, Ji-Ho Youk, Woong-Ryeol Yu 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 8 53-61 (9 pages)
to simplify and improve the polymer-wrapping process. Transmission electron microscopy analysis confirmed the wrapping of the MWCNTs and graphene with PAN layers. The interaction between the graphitic structure and the PAN molecules was examined using proton nuclear magnetic resonance, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and Raman spectroscopy. The obtained results revealed that the cyano groups of the PAN molecules facilitated... -
One-step synthesis of dual-transition metal substitution on ionic liquid based N-doped mesoporous carbon for oxygen reduction reaction
Ulziidelger Byambasuren, Yukwon Jeon, Dorjgotov Altansukh, Yunseong Ji, Yong-Gun Shul 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 8 53-64 (12 pages)
Nitrogen (N)-doped ordered mesoporous carbons (OMCs) with a dual transition metal system were synthesized as non-Pt catalysts for the ORR. The highly nitrogen doped OMCs were prepared by the precursor of ionic liquid (3-methyl-1-butylpyridine dicyanamide) for N/C species and a mesoporous silica template for the physical structure. Mostly, N-doped carbons are promoted by a single transition metal to improve catalytic activity for ORR in PEMFCs. In this study, our N-doped mesoporous carbons were... -
Carbon-allotropes: synthesis methods, applications and future perspectives
P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)
The element carbon has been used as a source of energy for the past few hundred years, and now in this era of technology, carbon has played a significant and very prominent role in almost all fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of... -
Recent Advances in Carbon-Nanotube-Based Epoxy Composites
Fan-LongJin, Soo-JinPark 한국탄소학회 Carbon Letters 13 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.1 1 1-13 (13 pages)
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4-Arm 스타형과 선형 블록 공중합체의 구리 프탈로시아닌 분산 연구
김병재, 정종화, 정지혜, 김봉수, 정기석, 백현종, Kim. Byoungjae, Jeong. Jonghwa, Jung. Ji-Hye, Kim. Bong-Soo, Jung. Ki-Suck, Paik. Hyun-Jong 한국고분자학회 폴리머 5 Pages
한국고분자학회 폴리머 2014, Vol.38 No.5 671-675 (5 pages)
본 연구에서는 잘 규정된 4-arm 스타형 및 선형 고분자를 합성하여 구조에 따른 구리 프탈로시아닌(CuPc)의 분산 안정성을 비교하였다. 분산제는 (2-dimethylamino)ethyl methacrylate(DMAEMA)와 poly(ethylene glycol) methyl ether methacrylate(PEGMA)를 사용하여 activators generated by electron transfer(AGET) 원자이동라디칼중합법(ATRP)으로 합성하였다. 합성된 고분자는 젤투과 크로마토그래피(GPC)와 핵자기 공명 분광법(NMR)을 사용하여 합성한 고분자들의 분자량 및 단량체의 조성을 결정하였다. 4-Arm 스타형 고분자 및... -
세팔 별모양 폴리스타이렌 사슬의 팽창에 대한 만능 환산 온도 파라미터의 적용
한국고분자학회 폴리머 2003, Vol.27 No.3 255-264 (10 pages)
세팔 별모양 폴리스타이렌 (PS, $M_{w}$=2.80$ imes$$10^{5}$ , 2.49$ imes$$10^{6}$ g/mol)의 여러 종류의 사슬 크기를 t-decalin 용액의 온도 20~7$0^{circ}C$ 사이에서 점성도법, 레이저 광산란법을 이용하여 측정하였다. 별모양 고분자들의 팽창이 만능성을 갖기 위하여서는 그들 자신의 교란되지 않은 회전 반경 $R_{G,Br,o}$이 포함된 (N/ $R_{G,Br,o}$$^{2}$)$^{3}$2/$ au$/$ au$$_{C}$ 파라미터가 사용될 것으로 예측하였으나, 실험 결과는 오히려 선형 폴리스타이렌 고분자의 교란되지 않은 회전 반경이 사용된 (N/... -
Expression of verocytotoxic Escherichia coli antigens in tobacco seeds and evaluation of gut immunity after oral administration in mouse model
Luciana Rossi, Alessia Di Giancamillo, Serena Reggi, Cinzia Domeneghini, Antonella Baldi, Vittorio Sala, Vittorio Dell'Orto, Ann 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 3호 5 263-270 (8 pages)
Verocytotoxic Escherichia (E.) coli strains are responsible for swine oedema disease, which is an enterotoxaemia that causes economic losses in the pig industry. The production of a vaccine for oral administration in transgenic seeds could be an efficient system to stimulate local immunity. This study was conducted to transform tobacco plants for the seed-specific expression of antigenic proteins from a porcine verocytotoxic E. coli strain. Parameters related to an immunological response and... -
Advances in liquid crystalline nano-carbon materials: preparation of nano-carbon based lyotropic liquid crystal and their fabrication of nano-carbon fibers with liquid crystalline spinning
Yong-Mun Choi, in Jung Jun Yeon, Hwang Seung Min, Kim Hyeonsu Jeong, Bon-Cheol Ku, Munju Goh 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 1 223-232 (10 pages)
This review presents current progress in the preparation methods of liquid crystalline nanocarbon materials and the liquid crystalline spinning method for producing nano-carbon fibers. In particular, we focus on the fabrication of liquid crystalline carbon nanotubes by spinning from superacids, and the continuous production of macroscopic fiber from liquid crystalline graphene oxide. -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8 vol%) and higher electrical conductivity values than those of samples extruded by capillary and injection molding. Shear induced orientation of MWCNT was observed via scanning electron microscopy, in the direction of flow in a...
