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점안제중(點眼劑中) 4-Morpholine Carboximidoylguanidine Hydrochloride의 분리정량(分離定量)
나운룡,Lah, Woon-Lyong 한국약제학회 1974 Journal of Pharmaceutical Investigation Vol.4 No.1
The isolative determination of 4-Morpholine carboximidoylguanidine Hydrochloride in the ophthalmic solutions was examined by means of colorimetric method using oxidized nitroprusside and sodium hypobromite. According to the results, the following could be summerzied. 1) The wave length of maximun absorption in $650\;m{\mu}$. 2) Beer's Lew is obeyed for $20{\sim}80\;mcg/ml$ in colored solutions. 3) Absorptions of colored solutions must be measured 5 minutes after the addition of oxidized and 5 minutes after the completion of sodium hypobromite. 4) 4-Morpholine carboximidoylguanidine hydrochloride can be determined within standard deviation 2.0%.
나운룡(Woon Lyong Lah) 대한약학회 1971 약학회지 Vol.15 No.3,4
In order to compare the iron concentrations of the marketed ferruginous hematinics with the sustained-release dosage forms and to prepare the good hematinic which can be absorbed effectively without forming "iron block" in the gastrointestinal tract, gelatinized micropellets containing medicament were prepared and hardened in 10% formalin-isopropanol in the time of 72 hours. These micropellets were digested with artificial gastric juice and plotted a curve of released iron concentration. As a result, it is found that gelatinized micropellets sustained-release dosage form is an excellent ferruginous hematinic and it is shown that several marketed preparations can be improved in their hematinic actions by forming the sustained-release dosage.
나운룡(Woon Lyong Lah) 대한약학회 1968 약학회지 Vol.12 No.3,4
The optimum reaction conditions for the preparation of the precipitated calcium carbonate of an average particle size of 0.05mc in diameter was set in which the Box-Wilson Plan was applied. The reaction conditions are as follows: 1.concentration of milk of lime; 6.56% w/w 2.temperature; 14.24oC 3.velocity of carbon dioxide introducing; 1.95l/min The crystal form was found that of calcite in X-ray diffraction analysis. The particle size was determined by the sedimentation volume measurement. The shape was identified by the electron micro-diffraction pattern and the electron microscopic photographs.
우린근(Lin Keun Woo),한병훈(Byung Hoon Han),박대성(Dae Sung Park),나운룡(Woon Lyong Lah) 한국생약학회 1973 생약학회지 Vol.4 No.4
In the light of quality comparison the ratio of panaxadiol and panaxatriol contents was assayed in the extract of various ginseng products, whose origin of production and species of the original plants are different. Aglycone compositions of other ginsengs were not comparable with Korean ginseng in their ratio of panaxadiol and panaxatriol contents of dammarane glycosides.
김양배,나운룡,유병설,김종국 한국약제학회 1982 Journal of Pharmaceutical Investigation Vol.12 No.3
Molecular structures of ω-amino acids, ω-aminosulfonic acids and their β-hydroxy substituted compounds were determined by X-ray diffraction method, and the similarities and differences between their molecular structures or between related compounds were discussed.