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양이온 교환 수지에 의한 아연의 지금 및 혼합물의 분리 정량
박면용 건국대학교 1970 學術誌 Vol.11 No.1
The impurities of Fe(III), Bi(III), Cu(II), Pb(II), Cd(II), and Ag(I) in zine metal are separated by the elution through 3.14cm2×25cm cation exchange resin, Dowex 50w×8(100∼200mesh), column with the mixed eluents of HAc and NaAc as eluents. The recoveries of all the ions are more than 99% and Fe(III) has a long tailing. The mixtures composed of Fe(III), Bi(III), Cu(II), Pb(II), Cd(II), Zn(II), and Ag(I) nitrate are dissolved in Nitric pH 1 solution and separated into its component through 3.14cm2×10cm column with the same eluents. Its recoveries are also found to be more than 99%.
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朴冕用 건국대학교 1973 文理論叢 Vol.2 No.1
ppm∼ppb 범위의 무기 혹은 유기분석에서 용액의 취급방법은 보정과 검출한계성에 중요한 역활을 한다. 몇개의 참고 문헌을 이용하여 미량분석에 수반되는 오차와 시료(試料)의 녹임에 대하여 검토하였다. L'auteur passe en revue, quelques publications traitant de me´thodes de pre´paration et de dissolution d'e´chantillons a l'etat de traces avant leur dosage. Les erreurs dans ces me´thodes, rendues plus difficiles a´ re´duire a´ cause des operations supplementaires exige´es, sont compare´es a´ celles associe´es aux methodes plus directes. Dans le dosage d'e´lements au niveau de la ppb dens les matrices mine´rales et organigues, les techniques en solution sont utiles parce qu'elles simplifient les proble´mes d'etalonnage et ame´liorent la limite de de´tection.
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Silicone-pyridine에 대한 Chlorophyll-a와 -b의 혼합착물의 형광연구(Ⅳ)
박면용,박택규,정구춘 建國大學校基礎科學硏究所 1987 理學論集 Vol.12 No.-
클로필-a와 -b를 혼합물의 상태로 1:2, 1:4, 1:6의 polydimethylethylsilane(0-2 -pyridylethyl methylsilane)에 Mg-pyridine 착물로 디에틸에테르중에서 결합시키고 중합체 사슬을 통한 에너지 이동을 연구하였다. Chl-b에 대한 Chl-a의 첨가량이 증가할수록 Chl-a의 혼합비(5:1, 3:1, 1:1)에 따라 형광수득율이 증가하였다. 반대로 Chl-b가 Chl-a에 비하여 첨가량이 증가할수록 형광수득율이 감소하였다. 최대 형광세기는 Chl-a와 Chl-b에 대하여 결합한 pyridine의 당량농도에서 나타났다. Chl-a에 의하여 흡수된 에너지는 중합체의 사슬을 통하여 Chl-b로 이동하였고 그 이동경향은 dimer>tetramer>hexamer의 순서로 증가하였다. The chlorophyll-a and -b have been bound 1:2, 1:4 and 1:6 polydimethyl ethyl silane(0-2-pyridylehylmethylsilane) as the mixed state to form the complex compound of Mg atom on chlorophyll and pyridine on the polymer in diethyl ether, and studied about the energy migration through the polymer chain in the same solvent. The more chl-a were added to chl-b the more increased fluorescence yields of chl-b were shown it to match for the mixed ratios of chl-a: chl-b in the order of 5:1, 3:1 and 1:1, while chl-a was shown the more decreased fluorescence yields according as the more chl-b were added. The maximum fluorescence intensity were appeared at equivalent pyridine concentration bound to the chl-a and -b. The absorbed energy by chl-a were transfered to chl-b through the chain, and the migration tendencies were on the increase of dimer>tetramer>hexamer.
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박면용,이명재,조동희,원충택 建國大學校基礎科學硏究所 1992 理學論集 Vol.17 No.-
The ion-selective electrode based on ferric oxide and calcium ferric have been studied to ionic sensitivities, selectivities and response behaviors in aqueous solution. The membrane selectrode of ferric oxide was prepared by using α-ferric hydroxide from ferric nitrate solution at pH 4.5∼6.0 . The membrane were sintered at 1,200℃ and 1,350℃. Calcium ferrite was prepared by mixing ferric oxide with calcium oxide on molar ratio of 0.8 : 0.2 and the selectrode membrane based on calcium ferrite was sintered at 1,100℃ Membrane seletrode of ferric oxide was responded without any selectivity to Ag? Ni?, Ca?, Bi?, Ci?, HCO₃?, CIO₄? and NO₃? ion. Membrane seletrode of calcium ferric responded except sensitivity to Ag?, Be?, Cu?, Cr?, Bi?, HCO₃?, CO??, and S??, but their sensitivities were agreed with Nernstain solpe. The selectrode of calcium ferrite was shown reproducible potential response to ions in the solution for six months
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朴冕用 建國大學校附設 應用科學硏究所 1977 理學論集 Vol.3 No.-
The studies on preparation procedures of solid supports for gas chromatographic column packing materials were carried out and obtained the best results by using diatomaceous earth produced at Kyung-Joo, Kyungbuk. Diatomaceous earth was found to be the most adequate material for solid supports among many possible substances such as firebricks and domestic natural ores-bentonite, acid clay, montmorillonite, kaolinite, etc. To obtain pink solid surpports, the natural diatomite ores were heated at 900℃for 6 hours, and then pulverized into 80-100 meshes. The particles were treated with concentrated hydrochloric acid and silane, and coated with 15% polyethylene glycol. This packing materials showed gas chromatogram tailing and asymmetrical to the polar compounds, but symmetrical without any tailing to non-poarl compounds. For the preparation of white solid supports, pulverized diatomite powders of less than 100 mesh sizes were mixed with 2% sodium carbonate, and treated with the same way as in preparing pink solid supports materials. This white solid supports treated with concentrated hydrochloric acid,10% sodium hydroxide and silane sequently, and ocated with 15% polyethylene glycol, did not show tailing to either compound but the resolution of peak were poor to non-polar compound, and gave a rather satisfactory result for the elution of polar compound compared with commercially available foreign equivalent packing materials.
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朴冕用,李文壽,鄭求春 建國大學校附設 應用科學硏究所 1978 理學論集 Vol.4 No.-
An infra-red absorption which is characteristics to the novolac resin is occurred at 1,000 ??, and this peak is useful for the identification of novolac phenol resin from resolic phenol resin. The relative intensities of infra-red absorption peaks at 813.01 and 751.88 ?? of novolac and resolic phenol resin samples did not show the significant changes for 60 min. at 140℃ and 120℃, but they were changed as a function of heat-treated time from 60 min. thereafter.
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이면호 湖南大學校 1995 호남대학교 학술논문집 Vol.16 No.1
Karl Marx, in his Economic and Philosophical Manuscripts, tries to make observations on the essential nature of a man and defines it in terms of work and labor. This idea of his is developed and elaborated more in his later works such as Thesis on Feuerbach, German Ideology and The Capital but, at the same time, these also show some new phases of Marx's thoughts on the definition of a human being. Marx tries to see a man as a total manifestation of all human activities including social relationship as well as labor activity. The main objective of this dissertation is to trace Marx's thoughts on his concept of a man in his earlier works and later ones and find out if there in any dialectical and dialogic relations between the two groups of works. This task requires discussions and analysis of Marx's major ideas, i.e. division of labor, alienation and reification, etc. Finally, as a conclusion, this dissertation attempts to show how Marx's new concept of a man contributed to our understanding of all human beings in the modern age.
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