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조재흥,김호두,신영욱 조선대학교 기초과학연구소 1986 自然科學硏究 Vol.9 No.1
The pulling apparatus for the growth of single crystalline solids was made by sing the Czochralskis' method. The sing1e crystaline solids with 4Agl-NaI,4Ag I-KI,4AgI-RbI and 4Ag I-NH_4I system have been grown without seeds of crystalline solids cooling at various temperatures of growth and considering the pulling and rotating rates of shaft from the appanatus mentioned above. The single crystalline solids grown were indentified by using the analytical data measured in the visible range of the X-ray diffractometer, polarimeter and polarizing microscope. All of the crystalline solids were grown at the range of 6.5~10.3cm lengthand 0.8~1.5cm diameter, respectivity and these crystalline solids have the structures of d and ℓorientation.
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Oen Nen H_4 거대고리 리간드를 가지는 이온교환수지 합성과 UO^2+_2의 분리특성
김일두,김호두 조선대학교 기초과학연구소 1987 自然科學硏究 Vol.10 No.1
The Oen Nen-H_4, macrocyclic ligand with the donor sets which the complex of UO^2+_2 could stably be formed has been synthesized from salycilaldehyde, 1.2-dibromoethane and diaminoethane. The resin separating UO^2+_2 selective1y has been synthesized by copolmerizating the chromethylated styrene-DVB and Oen Nen-H. The adsorptive characteristics and behavior of elution of the uranium (Ⅳ) metal for the resin mentioned above were discussed in various experimental conditions. The styrene-DVB copolymer with Oen Nen-H group was stable at high temperature (350℃) and in the strong acid and base, and showed the structural stability for a long use. The optimum condition of selective adsoption of uranyl (Ⅱ) nitrate solution for the resin with Oen-H_4 group was pH4. O-10.5.In dilute sample solution, UO^2+_2 was adsorbed well by the resin of copolymer with 1% cross linkage of Oen Nen-H type, but adsorptivity of UO^2+_2 was decreased in the resin of copolymer with crosslinking more than 4%.
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정오진,송기둥,김호두,이용두 조선대학교 기초과학연구소 1985 自然科學硏究 Vol.8 No.1
The macrocyclic ligands of the dibenzo-18-crown-S(DBC) was synthesized from pyrocatechol and bis 1.1-dibromo ethane. The determination of stability constant, mole ratio, melting point and structure of solid type land calculation of thermodynamic function (△S, △H) of DBC complexes were investigated. The compound of DBC ligands with nitrate salt of rare earth element was formed 1 : 1 complexes as mole ratio in N, N-dimethyformamide. From those results, it was found that stability constant of the complexes with affects on the kind of anions. The stability constant and melting point of these complexes formed were 4.95 and 298℃ respectively.
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Zanthoxylum Schinifolia Seed의 理化學的 特性에 關한 硏究
조재흥,차월석,김호두 조선대학교 생산기술연구소 1987 生産技術硏究 Vol.9 No.2
The properties of Zanthoxylum schinifolia oil are: Refractilre index= 1,4710, Acid value=1.97, Iodine value=116, Smoking point=190℃ and Saponification value=180. The contents of chemical composition are: total fatty acid = 99.9 %, palmitic acid=27.6%, total amino acid 9600㎎/100g Sample, and glutamic acid 2570㎎/100g. All the essential anino acid contained in Zanthoxylum schinifoliia, and the total amino acid, 19.59㎎/16g N, standard quantity of FAO, 22.4㎎/16g N.
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네자리 Schiff base ligand를 갖는 금속착물에 관한 연구(Ⅱ)
정오진,서혁춘,김호두 조선대학교 기초과학연구소 1986 自然科學硏究 Vol.9 No.1
The terradenate schiff base ligand, N-N’-bis(salicyliden) -1.8-naphthalenediamine, has been synthesized from salicylaldehyde and 1.8-naphthalenediamine by Duff reaction. This schiff base ligand has been reached with Pd(Ⅱ), Rh(Ⅲ) and Nb(Ⅴ) metallic ion to form new complexes : Pd(Ⅱ) C_24H_15N_2O_2·2H2O, Rh(Ⅲ) C_24H_15N_2O_2·2H2O and Nb(Ⅴ) Cl_2·C_24H_16N_2O_2·4H_2O. The compositions and structures of the ligand and complexes have been discussed by element analysis, Kahl-Fischer's moisture titration method, thermal analysis, ultraviolet speectroscopy, infrared spectroscopy, ^1H nmr spectroscopy, X-ray diffraction patterns and electric conductance, respectively. Ⅰ. is clear that the Pd(Ⅱ) and Rh(Ⅲ) complexes have the structure of the hexacoordinating, and Nb(Ⅴ) has octacoordinating system. The mole ratios of metallic ions to ligard for all of the complexes are 1:1 and all of the complexes with tetradenate schiff base ligand have been coordinated with one, two and four molecules of water in accordance with the kind of complexes. Only the Rh(Ⅲ) complex has the structure of the dimmer bridgbonded with oxygen atom. The Pd(Ⅱ), Rh(Ⅲ) complexes are nonpolar but Nb(Ⅴ) complex is polar molecule dissociated with the Nb(Ⅴ) (C_14H_12N_2O_2). 4H_2O^3+.3Cl^- and has structure Of 1:3 electrolytes. All of the complexes form the d-d and d-π^* charge transfer complex between ligand and metal.
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