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鄭元謨,邊大鉉,崔點洙,安世熙 연세대학교 자연과학연구소 1980 學術論文集 Vol.5 No.-
본 실험에서는 YonseiⅡ 베타선 스펙트로 메터와 연결하여 e-r, e-e등의 각상관 관계 또는 좀더 정확한 베타선 에너지를 측정하기 위하여 소형의 이중집속 베에타선 스펙트로 메터를 설계제작하였다. 특히 자장의 중심부에서의 자장의 특성 빛 자장폐판이 있을 때에의 자장의 변화를 측정하였다. Small double focusing beta-ray spectrometer was designed and fabricated in this laboratory to measure e-r, e-e correlation when the source is set up outside the magnetic field or to measure accurately beta-ray energy by using a pair of this type (Yonsei Ⅱ) of spectrometer. We have obtained the data on the magnetic field characteristics such as the magnetic properties of the magnetic core, the field drop at the magnetic shielding plate window.
朱寬植,鄭元謨 明知大學校 自然科學硏究所 1984 자연과학논문집 Vol.2 No.-
?Gd의 몇몇 감마전이에 대한 혼합비 δ를 구하기 위하여 감마-감마 각 상관관계 실험을 하였다. 두개의 Single Channel Analyzer 와 세개의 Counter, 그리고 하나의 Univeral Coincidence 를 사용한 동시회로가 본 실험에 사용되었다. 각 상관계수 Akk를 구하기 위하여, 각도 90?, 120?, 150?180?에서 동시계열(1596-123 keV, 1274-123keV,1005-123keV,873-123keV,248-123keV,723-873keV)을 조사하였다. δ(1596)=-0.091?, δ(1274)=-0.0009? δ(1005)= 6.3?, δ(873) =-5.9?, δ(248)= 0.295?를 구하였다. Gama-gamma angular correlation measurements were perormed to determine the mixing ratio δof some γ-transistions in ?Gd. The coincidence circuit with two single channel analyzer, three counters and a universal coincidence were used to this experiment. To get the angular correlation coefficient Akk, the angular correlation function W(Θ) was fitted to the coincidence sequences at the angular positions Θ=90?, 120?150?and 180?. Results for themixing ratios are: δ(1596)=-0.091+0.049-0.052, δ(1274)=-0.009+0.016-0.034, δ(1005)=6.3+4.5-1.8, δ(873)=-5.9+2.5-1.8, δ(248)=0.295+0.070-1.134
鄭元謨 大田産業大學校 1994 한밭대학교 논문집 Vol.11 No.0201
C-SCS의 검토에서부터 시작하여, 구해진 e값과 μ값을 이용하여 지방족계, 방향족계를 같은 기반에서 고찰하고 여기에 관계되는 a(e+bμ)+c식으로서 핵종과 치화기의 구조를 계산하고, 치환기정수의 예언을 가능케 유도한다. 또한 비공유전자대 효과, 1.3공간경유상호작용의 효과, 유기전자적 효과등을 설명했으며, 주로 반응에서 전위상태 가까이에서의 전자의 이동을 살피는데 유의해서 설명했다.
박성하,전상문,정원모 大田工業大學 1990 한밭대학교 논문집 Vol.7 No.2
The upgrading of Canadian Athabasca bitumen by catalytic hydroprocessing was studied in CSTR(Continous Stirred Tank Reactor) with conventional catalysts of Mo-Co/Al_2O_3 and Ni-Mo/Al_2O_3. The objective of the study was to investigate the effect of resisdence time(or LHSV) and temperature on gaseous and liquid product distribution, conversion of sulfur(HDS) and nitrogen(HDN), hydrogen consumption, pitch conversion and coke formation in the reactor. The optimal speed of agitation, which was used in whole experimental runs, was between 1,000 and 1,300 rpm which minimized mass transfer resistance due to the formation of liquid film on the surface of catalysts. The correlation of resisdence time(t) and concentration(C) was measured to be. C/C_0=1-exp(-(t-0.583/1.45)) In the hydroprocessing of bitumen, the kind of catalysts did not seem to influence the distribution of gaseous products in which which C_3 and C_4 fraction were predominent, whereas C_1 and C_2 fractions in noncatalytic processing. In the liquid products, naphtha fraction was increased with temperature, whereas fuel oil fraction was decreased. The distillate fraction was relatively invariant with respect to temperature. The catalyst Mo-Co/Al_2O_3 showed a higher HDS activity whereas Ni-Mo/Al_2O_3 showed a higher HDN activity. At 430℃ and LHSV=2, the sulfur conversions with Mo-Co/Al_2O_3 and Ni-Mo/Al_2O_3 were about 3 times and 2.5 times, respectively, as much as the conversion in the absence of catalyst and nitrogen conversions were about 4 times and 5 times, respectively.
有機金屬分子內配位化合物의 Carbonyl配位子에 關한 硏究
鄭元謨 大田開放大學 1986 論文集 Vol.5 No.-
This thesis is to study on the difinition, the sort and the Property of Organometallic Intramolecular Coordination Compounds, namely, it is to inquire into the sort by the reaction of the product, the quality of reaction, the stability of the product, and with this, stereo-structure to Organometallic Intramolecular Coordination Compounds having the latest carbonyl coordination. The product-reaction of Organometallic Intramolecular Coordination Compounds carbonyl coordination is mainly classified into direct reaction, replacement reaction, insertion reaction, addition reaction and desiccation reaction. In these reactions it is apt to produce Intramolecular coordination compounds having five member-ring structure. And these five member-ring structure is stable. Accordingly, it is difficult to act on the opening and closing reaction of ring, and with this the exchange reaction of coordination.