• Bulletin of the Korean Chemical Society
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• v.34 no.8
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• pp.2256-2260
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• 2013

A new quinoline-based acylhydrazone (1) has been synthesized and applied as a fluorescent probe. Probe 1 exhibits high selectivity and sensitivity to $Cu^{2+}$ with fluorescence "ON-OFF" behavior in HEPES buffered (1‰ DMSO, HEPES 20 mM, pH = 7.4) solution. The on-site generated 1-$Cu^{2+}$ complex displays excellent selectivity to sulfide ions with fluorescence "OFF-ON" performance through copper displacement approach.

• Bulletin of the Korean Chemical Society
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• v.34 no.1
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• pp.159-163
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• 2013

A new Rhodamine B hydrazide hydrazone 1 has been synthesized and investigated as a colorimetric and fluorescent "off-on" sensor for the recognition of $Cu^{2+}$ in $CH_3CN/H_2O$ (1:1, v/v, HEPES 10 mM, pH = 7.0) solution. Sensor 1 displayed highly selective, sensitive and rapid recognition behavior toward $Cu^{2+}$ among a range of biologically and environmentally important metal ions. Sensor 1 bind $Cu^{2+}$ via a 1:1 stoichiometry with an association constant of $1.92{\times}10^6\;M^{-1}$, and the detection limit is evaluated to be $7.96{\times}10^{-8}\;M$. The $Cu^{2+}$ recognition event is reversible and is barely interfered by other coexisting metal ions.

• Bulletin of the Korean Chemical Society
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• v.31 no.11
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• pp.3212-3216
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• 2010

A new rhodamine-based sensor 1 was designed and synthesized by incorporating rhodamine B and benzimidazole moieties. Sensor 1 exhibits high selectivity and sensitivity to $Cu^{2+}$ in $CH_3CN$-water solution (HEPES buffer, pH = 7.0) with an obvious color change from colorless to pink. Other metal ions such as $Hg^{2+}$, $Ag^+$, $Pb^{2+}$, $Sr^{2+}$, $Ba^{2+}$, $Cd^{2+}$, $Ni^{2+}$, $Co^{2+}$, $Fe^{2+}$, $Mn^{2+}$, $Cu^{2+}$, $Zn^{2+}$, $Ce^{3+}$, $Mg^{2+}$, $K^+$ and $Na^+$ had no such color change and have no significant influence on $Cu^{2+}$ recognition process. The interaction of $Cu^{2+}$ and sensor 1 was proven to adopt a 1:1 binding stoichiometry and the recognition process is reversible.

• Bulletin of the Korean Chemical Society
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• v.31 no.11
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• pp.3159-3162
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• 2010

To realize highly selective recognition of oxalate in water, a new chemosensing ensemble that behaves highly selective colorimetric recognition of oxalate in water at pH 7.4 has been developed. The ensemble was constructed by a pyrrole containing mononuclear copper complex and chromeazurol S. The ensemble shows a highly selective recognition of oxalate through an obvious color change from blue to yellow upon the addition of oxalate, whereas, other dicarboxylates such as malonate, succinate, fumarate, maleate, glutarate, adipate, phthalate, isophthalate and terephthalate do not induce any noticeable color changes. The oxalate recognition process is not significantly affected by other coexisting dicarboxylate.

• Journal of the Korean Society of Fashion and Beauty
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• v.4 no.4 s.10
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• pp.63-74
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• 2006

The purpose of the study was to investigate unique field of formative characteristics using copper wire, the present thesis aims at developing concept of hair art as a creative way, and recognizing the formative characteristics of copper wire as analyze and arrange the concept of hair art, formative, a way of practical application, material aspect, through literature, academic journals, photo data, and researched about prior piece, for example, architecture and costume with hair art, and then pieces of hair art were made. Influenced by the theory, applied the social phenomenon and the formative principles, produced the seven pieces which includes flying, composure, yahoo, harmony, balance, way, spring etc. The results of this research are outlined below. Firstly, It showed that the copper wire can express the mysterious and beautiful formative world, and it could know the possibility of design. Secondly, formative activity using copper wire can differ according to approach and interpretation, and it can be a works with aesthetic value. Thirdly, hair could be express the art of the three-dimensional forms which constitute the mixture of line, surface and space. Fourthly, the handicraft including beading, pleat, piping, rolling that used for works are proper to express the unique formative and the rich colors, and it can also express the transparency. So it showed that copper wire is a proper materials. So, hair art has enlarged the fields with development of technique, and changed to recognition of the hair art, and opened up a new field. Hair art will be positive fields to maximize the possibility, and not only the beauty artist but also the public will be communicate each other.

• Korean Journal of Microbiology
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• v.48 no.3
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• pp.187-191
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• 2012

Two-component system (TCS)-based bacterial zinc and copper biosensors, in which green fluorescent protein (GFP) is expressed under the control of zraP and cusC promoter in ZraS/R and CusS/R TCS, were evaluated in artificial wastewater. Bacterial biosensors developed in this study efficiently expressed GFP by the recognition of $Zn^{2+}$ and $Cu^{2+}$ in artificial wastewater. Secondly, TCS-based zinc and copper removing bacteria with the peptide displayed on cell surface were examined in artificial wastewater. Zinc and copper removing bacteria expressed the peptide as a fusion protein such as OmpC-ZBP (zinc binding peptide) and OmpC-CBP (copper binding peptide) on the cell surface when sensing exogenous $Zn^{2+}$ and $Cu^{2+}$ through ZraS/R and CusS/R TCS. The recombinant cell expressing metal-adsorbing peptide could efficiently remove copper and zinc (15 and 18 mg/g dry cell weight, respectively) in artificial wastewater. Therefore, it was demonstrated that the TCS-based recombinant cell for the recognition or removal of heavy metal functions well in artificial wastewater environment.

• Journal of Fashion Business
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• v.11 no.1
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• pp.38-47
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• 2007

In the modern society that is advancing rapidly, the hair art is also advancing and subdividing. The purpose of this study is to investigate unique field of formative as characteristics and forms of copper wire, focused on such a harmony of hair art, the present thesis aims at developing concept of hair art as a creative way, and recognizing the formative characteristics of copper wire as analyze and arrange the concept of hair art, formative, a way of practical application, material aspect, through literature, academic journals, photo data, and researched about prior piece, for example, architecture and costume with hair art, and then pieces of hair art were made. Influenced by the theory, applied the social phenomenon and the formative principles, produced the five pieces which includes balance, composure, flying, harmony, way, spring etc. The results of this research are outlined below. Firstly, It showed that the copper wire can express the mysterious and beautiful formative world, and it could know the possibility of design. Secondly, formative activity using copper wire can differ according to approach and interpretation, and it can be a works with aesthetic value. Thirdly, hair could be express the art of the three-dimensional forms which constitute the mixture of line, surface and space. So, hair art has enlarged the fields with development of technique, and changed to recognition of the hair art, and opened up a new field. Hair art will be positive fields to maximize the possibility, and not only the beauty artist but also the public will be communicate each other.

• Bulletin of the Korean Chemical Society
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• v.34 no.10
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• pp.2905-2908
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• 2013

Fluorescent and colorimetric recognition properties of 2-(4-N-phenyl-3-thiosemicarbazone)-8-hydroxyquinoline (1) in buffered aqueous solution (1% DMSO, HEPES 20 mM, pH = 7.4) have been examined. Sensor 1 displays highly selective and sensitive recognition to $Cu^{2+}$ with fluorescence "ON-OFF" performance. The in situ formed 1-$Cu^{2+}$ complex exhibits an excellent selectivity toward sulfide ions with fluorescence "OFF-ON" behavior via $Cu^{2+}$ displacement approach. Thus, relay recognition of $Cu^{2+}$ and sulfide by a known molecule 1 has been achieved.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2000.06a
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• pp.54-61
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• 2000

A method and results of classification of 4 types metallic wear debris were presented by using their color features. The color image of wear debris was used (or the initial data, and the color properties of the debris were specified by HSI color model. Particle was characterized by a set of statistical features derived from the distribution of HSI color model components. The initial feature set was optimized by a principal component analysis, and multidimensional scaling procedure was used for the definition of classification plane. It was found that five features, which include mean values of H and S, median S, skewness of distribution of S and I, allow to distinguish copper based alloys, red and dark iron oxides and steel particles. In this work, a method of probabilistic decision-making of class label assignment was proposed, which was based on the analysis of debris-coordinates distribution in the classification plane. The obtained results demonstrated a good availability for the automated wear particle analysis.

• KSTLE International Journal
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• v.1 no.1
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• pp.34-42
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• 2000

A method and results of classification of four different metallic wear debris were presented by using their color features. The color image of wear debris was used far the initial data, and the color properties of the debris were specified by HSI color model. Particles were characterized by a set of statistical features derived from the distribution of HSI color model components. The initial feature set was optimized by a principal component analysis, and multidimensional scaling procedure was used fer the definition of a classification plane. It was found that five features, which include mean values of H and S, median S, skewness of distribution of S and I, allow to distinguish copper based alloys, red and dark iron oxides and steel particles. In this work, a method of probabilistic decision-making of class label assignment was proposed, which was based on the analysis of debris-coordinates distribution in the classification plane. The obtained results demonstrated a good availability for the automated wear particle analysis.