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Trans-Dinitrogen Bisdiphenyl Phosphinoethane Molybdenum(0)의 水素轉移에 관한 硏究
박무순 순천향대학교 1983 논문집 Vol.6 No.3
The Dinitrogen complex ??(DPPE=Ph₂PCH₂CH₂PPh₂) was found to be an excellent catalyst for hydrogen transfer from organic compounds to olefins. Secondary alcohols were found much more effective as hydrogen donors than primary alcohols or hydroaromatic compounds. Although α-olefins were also reduced by secondary alcoholstetrahydrofuran in the presence of ??, double bond migration occurred simultaneously. The catalytic activity of related complexes of molybdenum for transfer hydrogenation was investigated.
trans-Dinitrogen bis-1,2-bis(Diphenylphosphino) Ethane Molybdenum(O)을 촉매로 Olefin에의 수소전이에 있어서 용매효과
박무순 순천향대학교 1989 논문집 Vol.12 No.2
Hydrogen transfer from organic compounds to olefins, which is called transfer hydrogenation, was studied to find effective homogeneous catalysts and it was found that trans-Mo(N₂)₂(DPPE)₂[DPPE = Ph₂PCH₂CH₂PPh₂] had the highest catalytic activity among the zerovalent complexes which were tried. This paper reports on investigation of the hydrogen donating ability of various organic compounds catalyzed by trans-Mo(N₂)₂(DPPE)₂. The most effective hydrogen donor is found to be 2-propanol among the organic compound examined. In the hydrogen transfer reaction of 2-propanol-tetrahydrofuran systems, the yield of hydrogenation product is remarkably incleased.
인체의 암세포주와 치은섬유모세포주에서 방사선조사가 apoptosis 유발에 미치는 영향에 관한 연구
박무순,이삼선,최순철,박태원,유동수,Park Moo-Soon,Lee Sam-Sun,Choi Soon-Chul,Park Tae-Won,You Dong-Soo 대한영상치의학회 1998 Imaging Science in Dentistry Vol.28 No.1
The radiation-induced apoptosis was studied for two human cancer cell lines (KB cells, RPMI 2650 cells) and the human gingival fibroblast cell line (HGF-1 cells). The single irradiation of 2, 10, 20Gy was done with 241.5 cGylmin dose rate using the /sup 137/Cs MK cell irradiator. The cells were stained with propidium iodide and examined under the fluoro-microscope and assayed with the flow cytometry a day after irradiation. Also, the LDH assay was done to determine the amount of necrotic cells. The obtained results were as follows: 1. On the fluoro-microscope, many fragmented nuclei were detected in the KB, RPMI 2650, and HGF-1 cells after irradiation. 2. On the DNA content histogram obtained from the flow cytometry, the percentages of the pre-Gl peak of the control and 2, 10 and 20Gy irradiation group were 4.5, 55.0, 52.3, and 66.6% on KB cells, 2.7, 3.3, 31.8, and 32.6% on RPMI 2650 cells and 2.8, 21.8, 30.4, and 40.2% on HGF-1 cells respectively. 3. The number of Gl-stage cells was abruptly decreased after 2Gy irradiation on KB cells and 10Gy irradiation on RPMI 2650 cells, But there was a slight decrease without regard to irradiation dose on HGF-1 cells. 4. There was no significantly different absorbance in extracellular LDH assay along the experimental cell lines.
W-Thiocyanate Complex의 抽出에 있어서 Amberlite LA₁의 利用
朴茂淳,孫炳贊 순천향의과대학 1979 Journal of Soonchunhyang Medical Science Vol.2 No.1
Comparision studies onthe extraction of Tungsten thiocyanate complex have been carried out using several pure organic solvents and 0.1% Amberlite LA₁solvents diluted with each solvent. The latter solvents show more advantages not only on extractability but also on linearity for the spectrophotometric determination of the complex than the former cases.
Ethanol 수용액중에서 N-(2,3-xylyl)anthranilic Acid의 반응
明平根,成洛道,朴戊淳 순천향대학교 1982 논문집 Vol.5 No.1
Kinetics studies on the hydrolysis of N-(2,3-xylyl) anthranilic acid in 50% aqueous ethanol binary mixture have been carried out by means of ultraviolet spectrophotometry at 25℃. Analysising pH-rate profile, the rate constants consists of two parts; (1) pH independent part, (2) dependent on hydronium ion. Results of m-value of Grunwald-Winstein plot (m=0.3), n-value of Kivinen plot(n= 1.35), show that the solvolysis displacement of N-(2,3-xylyl)- anthranilic acid proceed via SN 2 type mechanism. And the dissociation constant of N-(2,3-xylyl) anthranilic acid in 50% aqueous ethanol solution twas measured by spectrophotometry method which value was ?? at 25℃. From the above results are hypothesized as following. That is, the hydrolysis proceed through SN 2 type mechanism below pH 3.50(pKa <[??]) and addition-elimination above PH 5.5(pKa>[??]) In the range of pH 3.5∼5.5, these two reactions occur competitively.
양극산화반응을 이용한 N-Hydroxyalkyl-γ-lactams 의 고리화반응
金大瑛,朴茂淳 순천향대학교 1992 논문집 Vol.15 No.1
N-Hydroxyalkyl-r-lactams were electrolyzed in an undivided cell with platinum plates as electrode in acetonitrile-methanol under constant current. The anodic oxidation of N-hydroxyalkyl-r-lactams occurred regioselectively at the endo cyclic carbon atom located at a to nitrogen atom. The nucleophilic substitution of 5-alkoxy-N-hydroxyalkyl-r-lactam generated from anodic oxidation of N-hydroxyethyl-r-lactam gave bicyclic-r-lactam under acidic condition.
朴文奎,金演斗,朴茂淳 순천향대학교 1980 논문집 Vol.3 No.1
This paper discusses extracting vanadium from Ockchun belt grocphite ores with dilute sulfuric acid. Leaching tests show that the dissolution rates of V₂ O(???) improve as the sodium hydrogen sulfite is increased. Approximately 50 percent of the vanadium is extracted by a reducing leach with sodium hydrogen sulfite in 0.3% sulfuric acid for 5 hours.
朴鍾會,朴茂淳,李弘 圓光大學校 基礎自然科學硏究所 1988 基礎科學硏究誌 Vol.7 No.3
고분자전해질인 Chondroitin sulfate A(CSA) 및 Chondroitin sulfate C(CSC)존재하에서의 methylene blue(MB) 및 acridine orange (AO)의 metachromasy 현상에 관하여 각각 분광학적 방법으로 연구하였다. P/D값의 변화에 따르는 meta-band 의 특성적 변화를 stacking이론에 의하여 설명하였으며, stacking 효과의 정량적 고찰에 의하여 고분자의 반복단위당 결합하는 색소분자의 수를 계산한 결과 MB가 AO보다 강한 stacking 효과를 나타냄이 발견되었다. CSA의 안정한 형태의 골격구조와 dimension을 발견하고 평면 방향색소의 free dimer의 모형을 근거로 CSA의 골격표면에 결합한 색소분자의 stacking 모형과 dimension을 제안하였다. Spectroscopic studies have been carried out on the metachromatic behavior of methylene blue(MB) and acridine orange(AO) in the presence of chondroitin sulfate A(CSA) and chondroitin sulfate C(CSC). The characteristic changes of the meta-band with the changes of P/D value are discussed in terms of the stacking theory. Quantitative studies on the stacking effect are make to calculate the number of bound molecules of dye per unit molecule of the polyanion. The result shows that MB has stronger stacking effect than AO. A stacking model and the dimension of the bound dyes on the surface of the polyanion are proposed, on the basis of the dimer model of planar aromatic dyes and the most stable conformation of the CSA chain. The model is found to be reasonable in accordance with the experimental results.