http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Adenosine 수용체 길항제인 플라보노이드 유도체의 3D-QSAR
임채욱,최세경,민지홍,유재학,임철부 중앙대학교 약학연구소 2000 약학 논총 Vol.14 No.-
3D-QSAR of flavonoid derivatives as adenosine receptor antagonist was performed with the comparative molecular field analysis (CoMFA). Their activities were well correlated with their steric field, electrostatic field, and lipophilicities.
Thiocarbamyl Enoxacin 유도체의 합성 및 항균작용
신화우,고무수,정동훈,최광식,임철부 원광대학교 식품약품안전성연구소 1991 食品藥品安全性硏究 Vol.4 No.-
Treatment of 1-ethyl-6-fluoro-1, 4-dihydro-4-oxo-7-(1-piperazinyl)-1, 8-naphthyridine-3-carboxylic acid (Enoxacin) with alkyl(or aryl) isothiocyanates which obtained from alkyl(or aryl) amines afforded six 1-ethyl-6-fluoro-1, 4-dihydro-4-oxo-7-(1-alkylthiocarbamylpiperazinyl)-1, 8-naphthyridine-3-carboxylic acids and five 1-ethyl-6-fluoro-1, 4-dihydro-4-oxo-7-(1-arylthiocarbamyl piperazinyl)-1, 8-naphthyridine-3-carboxylic acids. The compounds synthesized were evaluated for their antimicrobial activities, in vitro, against Escherichia coli 6-PE-4, Bacillus subtilis 74-51, Proteus vulgaris 78645, Klebsiella pneumoniae JYA-78314, Staphylococcus aureus 79110 and Pseudomonas aeruginosa 8765-1 p_2.
Ablation of Polypropylene for Breathable Packaging Films
Ik-Bu Sohn,Young-Chul Noh,Sung-Chul Choi,Do-Kyeong Ko,Jongmin Lee,Young-Jin Choi 한국레이저가공학회 2006 한국레이저가공학회지 Vol.9 No.3
A Polypropylene (PP) film was ablated using a femtosecond laser with a center wavelength of 785 ㎚, a pulse width of 184 fs and a repetition rate of 1 ㎑. Increments of both pulse energy and the shot number of pulses lead to co-occurrence of photochemical and thermal effect, demonstrated by the spatial expansion of rim on the surface of PP. The shapes of the laser-ablated PP films were imaged by a scanning electron microscope (SEM) and measured a 3D optical measurement system (NanoFocus). And, the oxygen transmission rate (ORT) of periodically laser-ablated PP film were characterized by oxygen permeability tester for modified atmosphere packaging (MAP) of fresh fruit and vegetable. Our results demonstrate that femtosecond pulsed laser is efficient tools for breathable packaging films in modifying the flow of air and gas into and out of a fresh produce container, where the micropatterns are specifically tailored in size, location and number which are easily controlled by laser pulse energy and pulse patterning system.
Ablation of Polypropylene for Breathable Packaging Films
Sohn, Ik-Bu,Noh, Young-Chul,Choi, Sung-Chul,Ko, Do-Kyeong,Lee, Jong-Min,Choi, Young-Jin Korean Society of Laser Processing 2006 한국레이저가공학회지 Vol.9 No.3
A Polypropylene (PP) film was ablated using a femtosecond laser with a center wavelength of 785 nm, a pulse width of 184 fs and a repetition rate of 1 kHz. Increments of both pulse energy and the shot number of pulses lead to co-occurrence of photochemical and thermal effect, demonstrated by the spatial expansion of rim on the surface of PP. The shapes of the laser-ablated PP films were imaged by a scanning electron microscope (SEM) and measured a 3D optical measurement system (NanoFocus). And, the oxygen transmission rate (ORT) of periodically laser-ablated PP film were characterized by oxygen permeability tester for modified atmosphere packaging (MAP) of fresh fruit and vegetable. Our results demonstrate that femtosecond pulsed laser is efficient tools for breathable packaging films in modifying the flow of air and gas into and out of a fresh produce container, where the micropatterns are specifically tailored in size, location and number which are easily controlled by laser pulse energy and pulse patterning system.
Thiocarbamyl Ciprofloxacin 유도체의 합성 및 항균작용
최규룡,임채욱,임철부 중앙대학교 약학연구소 1994 약학 논총 Vol.8 No.-
Ten new thiocarbamyl ciprofloxacin derivatives and six their pivaloyloxymethyl esters were synthesized and evaluated for their antibacterial activity in vitro. Compound[11],N-methylthiocarbamyl ciprofloxacin exhibited the growth inhibitory activity at a concentration of 0.5㎍/ml against S. aureus SG 511, 0.12㎍/ml against Ps. aeruginosa 1771M and 0.06㎍/ml against Ps. aeruginosa 1592E. In general, aliphatic substituted thiocarbamyl ciprofloxacin showed more potent antibacterial activity than aromatic substituted thiocarbamyl ciprofloxacins.
呂鐵鉉,崔在時,방부길 연세대학교 대학원 1977 延世論叢 Vol.14 No.2
The nonstoichiometric compositions of the cuprous oxide system have been studied by analyzing the weight gain or loss of the samples measured by a specially made quartz microbalance in a temperature range from 400 to 1200℃ under oxygen pressures from 1×10-5 to 1 atm. The x values of the nonstoichiometric chemical formula Cu2O1+x varied between -0.00665 and 0.02114, and the enthalpies of formation of nonstoichiometric compositions were usually less than 7.32 Kcal/mole under the above conditions. The plots of log x vs. log Po2 (or log x=l/n log Po2) show linearity, and l/n values calculated from the slopes of the plots are 1/5.26∼1/3.64 in the temperature range of 500~1000℃ under 1×10-3~l atm O2 pressures. Most of the physical properties of the cuprous oxide, such as electrical conductivity, defects and diffusion, can be explained on the basis of x values and the thermodynamic data calculated from the temperature and oxygen pressure dependences of the nonstoichiometric compositions.
Piperazinyl Quinolone계 유도체의 합성 및 항균작용
임철부(Chul Bu Yim),이영운(Young Woon Lee),최수항(Su Hang Choi),염정록(Jeong Rok Youm),허인회(In Hoi Huh) 대한약학회 1991 약학회지 Vol.35 No.6
A number of 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(4-substitutedcarbamyl-1-piperazinyl) quinoline [or 1,8-naphthyridine]-3-carboxylic acid and their pivaloyloxymethyl esters were prepared. The compounds synthesized were evaluated for antibacterial activity in vitro against Escherichia coli, Bacillus subtilis, Proteus vulgaiis, Klebsiella pneumoniae, Staphylococcus aureus and Pseudomonas aeruginosa. Among those 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(4-methylcarbamyl-l-piperazinyl) quinoline-3-carboxylic acid [1] and 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(4-methylcarbamyl-1-piperazinyl)1,8-naphthyridine-3-carboxylic acid [6] showed the most potent in vitro antibacterial activity.