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안정신,정영숙,정여진,서수균,Cooney, T. M. 한국심리학회 산하 한국발달심리학회 2011 한국심리학회지 발달 Vol.24 No.3
This study identified the problems of successful aging studies in western and Korean cultures through 79 researches in last 20 years. First, there was no academic agreement about successful aging concept among researches. Therefore successful aging was accessed with various different components and there was mixed using of components and influential factors of successful aging in diverse empirical studies. Second, there were differences on rate of elderly’s report as successful aging because of the disagreement of what was successful aging. In addition, there was no consideration about the different characteristics within the elderly group. Lastly, this study compared the components and influential factors of successful aging between two different cultures. Based on the results, cultural influences on conceptualization of successful aging was discussed and necessity of re-conceptualization of aging well in terms of Korean culture was emphasized.
Amplification of a conducting polymer-based DNA sensor signal by CdS nanoparticles
J. Travas-Sejdic,H. Peng,R.P. Cooney,G.A. Bowmaker,M.B. Cannell,C. Soeller 한국물리학회 2006 Current Applied Physics Vol.6 No.3
A novel DNA sensor based on a polypyrrole substrate and nanoparticle labeled ODN probes was prepared and characterized. In this sensor type the DNA sample to be analyzed was physically entrapped into the polypyrrole film during electropolymerization. The resulting sensor film was then exposed to ODN probes in solution. Sensitive electrical readout was achieved by electrochemical impedance spectroscopy. A further amplification in sensor response (as compared to using unlabeled ODN probes) was achieved by tagging ODN probes with CdS nanoparticles. We suggest that the sensor response is caused by an increase in charge transfer resistance upon binding of complementary CdS–ODN nanoparticle probes. The selectivity of the sensor was tested with various match and mismatch sequences. By appropriate choice of hybridization conditions the sensor was able to robustly discriminate between the exact match and a two-point mismatch sequence.
Evaluation of antioxidant activity of aniline and polyaniline
M. Gizdavic-Nikolaidis,R. P. Cooney,J. Travas-Sejdic,P. A. Kilmartin,G. A. Bowmaker 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4
The ability of aniline and polyaniline (PANI) samples to act as antioxidants using the 1,1-diphenyl-2-picrylhydrazyl (DPPH)free-radical method are investigated by applying UVVIS and ESR spectroscopy. The UVVIS spectra of reaction mixtures inMeOH showed that PANI is more eective than aniline in eliminating the DPPH radicals by a factor of 5.8, while HCl-doped PANIwas about 1.7 times more eective than PANI. A study of the kinetics of the reaction between DPPH and aniline showed that thereaction is rst order with respect to DPPH and approximately second order with respect to aniline. The relationship between thisand a previously proposed mechanism for this reaction is discussed.
Spectroscopic studies of interactions of polyaniline with some Cu(II) compounds
M. Gizdavic-Nikolaidis,,J. Travas-Sejdic,R.P. Cooney,and G.A. Bowmaker 한국물리학회 2006 Current Applied Physics Vol.6 No.3
The incorporation of planar Cu(II) complexes as dopants into ES-PANI through an ion-exchange process was investigated by spec-troscopic methods. A decrease in the intensity of the EPR signals from polarons in Cu(II) complex-doped PANI samples was observed,while the Cu(II) anion concentration increases and favors the formation of bipolarons in Cu(II) complex-doped PANI systems. A largeinuence of the copper complex counterion or the solvent on the conductivity in the PANI samples after ion-exchange has been observed.The reactions of EB-PANI following dierent levels of reduction or HCl doping with CuCl2 aqueous solution are also investigated andnew reaction mechanisms are proposed.