중학교 과학교과서에서의 상상력 활용에 관한 연구

이우붕,박정혜,정원우 慶北大學校 科學敎育硏究所 2003 科學敎育硏究誌 Vol.27 No.-

Raising a Korea to be a leader in the international, informational 21C is the basic theme of the 7th education progress. To meet these kinds of needs, we must work on concentrating to bringing up creativity from understanding the basics of society. Creativity education means to raise up the creativeness of the students. All the students bear the potential of creativeness inside, and it can be brought out by education or natural causes. Developing and extending the ability for the students to think with flexibility or to think with originality is the main duty of the teachers. The main object of the research is to think about the ways to extend imaginative power in educating creative human, and then to lead the imagination related on the educational activity to the field of science. So we tried to divide the educational activity based on creativity in parts, and for each part Ⅰ provided the examples that are on the middle school science text so that we can provide the basis of building the creativity of students and to make the education field a creative one. Due to these educational causes I found out the reason why imaginative power education is in need and the categories of educational activity on imaginative power, and to go with that I also investigated on the ways to bring up imaginative power in class. Also I searched for the ways on how you should teach to develop imaginative power to applicate this research to the actual school classes, then I provided the 'class model' for developing imaginative power. After that I of drew up the essential teaching program that you can actually applicate, to follow I actually applied some techniques on classes. Our educational situation is under many restrictions to accept and apply many diverse materials that can develop imaginative power. But the biggest restriction is on the teachers themselves. Teachers must put much effort in preparing many materials and examples, and must also try to fulfill the students scientific thinking power by sharing their thoughts. It is impossible to develop imaginative power by training and taking exams to accomplish a special goal. We can never guess how the final result of imaginative power can come out, so it is almost impossible to train, prepare, estimate directly. So diverse materials in quantity and quality(that can valuate imaginative power), must also become the target of development.

[1.1.1.1]Paddlane과 할로겐 화합물과의 반응

李愚鵬,吳東元,黃悳海,權明淑,鄭宰準 慶北大學校 師範大學 科學敎育硏究所 2002 科學敎育硏究誌 Vol.26 No.-

[1.1.1]Paddlane has an inverted structure at two bridge-head carbon atoms. We will describe the reaction of [1.1.1]Paddlane and [1.1.1.1]Paddlane. The reaction of [1.1.1]propellane with singlet methylene affored 1,3-Dimethylene as the major product and [1.1.1.1]paddlane as the minor products were obtained. The reaction of [1.1.1]propellane with triplet methylene was carried out in the similar conditions. The result afforded 1,3-Dimethylenecylopropane as the major product and various side products were also obtained. But no trace of [1.1.1.1]paddlane was detected. After the synthesis of [1.1.1.1]paddlane, continuously [1.1.1.1]paddlane reacts with iodide. The product that I expected for 1,3-diiodo-tricyclo[1.1.1.1]hexane is different. and has unsymmetrical structure.

A Photooxidation in Solid State on Tetraphenylcyclopentadienone

이우붕,곽경탁,Lee, W.B,Kwak, K.T. Korean Chemical Society 1995 대한화학회지 Vol.39 No.2

과학사에서 리비히(Ⅰ)

이우붕,정원우 경북대학교 과학교육연구소 1996 科學敎育硏究誌 Vol.20 No.-

Justus von Liebig, the modern chemist, used to scientists playing a less prominent role in society, may be taken aback to realize the considerable esteem that the public held the great organic chemist in during his lifetime. How had Liebig come to acquire such a reputation for statesmanship?

1.3-Diiodobicyclo [1.1.1] pentane 과 Sodium sulfide 와의 반응

이우붕,오동원,신현정 慶北大學校 師範大學 科學敎育硏究所 1998 科學敎育硏究誌 Vol.22 No.-

[1.1.1]propellane has an inverted structure at the two bridged carbon atoms. Interbridgehead bonding character of [1.1.1]propellane was described by p-p(σ) bond. Interbridgehead bond distance is longer than normal C-C bond and it's charge distrbution is about four-fifths of a normal C-C bond So [1.1.1]propellane undergoes facile free radical addition reactions. 1,3-Diiodobicylo [1.1.1] pentane was synthesised by irradiating [1.1.1]propellane and 1_(2) in ether/hexane(1:5) The reaction of 1,3-Diiodoboicyclo[1,1,1]pentane with Sodium sulfide produced unexpected products (ring opening product, linear polimer). But we tried thes reaction under high dillution for inhibition of polymerization These products were separated by preparative G.C and TLC and characterized by H-NMR, GC-MS, ^(13)C-NMR

Tetraphenyldiazocyclopentadiene의 合成과 光反應

李愚鵬,李秉淑 경북대학교 과학교육연구소 1990 科學敎育硏究誌 Vol.14 No.-

Tetraphenyldiazocyclopentadiene is an useful compound to prepare carbene which is an activated intermediate in the photoreaction, pyrolysis and the other reactions. We have synthesized tetraphenyldiazocyclopentadiene from tetraphenylcyclopentadienone and toluene-p-sulphonylhydrazone. The yields were fairly good with 64%. tetraphenyldiazocyclopentadiene was irradiated with 400W UV Lamp(λ=365nm) in diethylether under nitrogen atmosphere. In the photoreaction we observed a carbene, prepared from tetraphenyldiazocyclopentadiene, underwent O-H insertion and C-H insertion reaction. We observed a mixture of 15 species in these reations with TLC analysis. But the major reaction was C-H insertion.

Eu를 포함하는 발광 고분자 합성

李愚鵬,吳東元,朴美淑,黃悳海,司空恩,朴在均 慶北大學校 科學敎育硏究所 2004 科學敎育硏究誌 Vol.28 No.-

Poly (9,9-dialkylfluorene-2,7-diyl) derivatives end capped with 2,7-dibromo-9,9-dihexylfluorene and conductive fluorene substituents have been synthesized through Ni(0), the nickel-catalysed reduction with metallic zinc-mediated polymerization. When electron and hole recombined and formed a exciton in emitting layer. Singlet exciton and triplet exciton is the ratio of one to three. One is fluorescence and three is phosphorescence, but phosphorescence is almost sustained a loss. Not only to shift blue region but to increase phosphorescence efficiency, it is substituted Eu for the terminal H in this polymer chain. P1-Eu showed green emission at 533nm while P1 had at 548nm. The main emission peaks of the P1-Eu shift shorter wavelength, besides we observed another emission peaks of the P1Eu at 418nm.

페놀誘導體 酸化防止劑의 Lipidperoxidation에 미치는 影響

李愚鵬,李貞鎬 경북대학교 과학교육연구소 1990 科學敎育硏究誌 Vol.14 No.-

The relative comparison of the effectivities of antioxidants(3, 5-Di-tert-butyl-4-hydroxybenzoic acid, its derivatives, BHT and 2, 6-Di-tert-butylphenol) gives the knowiedge of the substituent effect of phenolic antioxidants on lipidperoxidation. We used polarograpic method initiated by hemoglobin to measure te effectiveness of antioxidants. Protective Indices(P.I.) was used for the relative comparison of activities of antioxidants. P.I=Oxidation of emulsion with antioxidant(min)/Oxidation of control emulsion(min) The result result of experiment showed that BHT has the highest activity and stearyl ester has the lowest activity. From these results, we came to the conclusion that the activities of anti-oxidants depend on the substituent effect of phenolic antioxidant;inductive effect and steric effect.

환경 마인드 변화를 위한 환경교육 방안

이우붕,정원우 慶北大學校 師範大學 科學敎育硏究所 1999 科學敎育硏究誌 Vol.23 No.-

Our eco-centered ethics have time to change the mind about nature. The sustainable development in text century needs good relationship between science, technology and society. For understand this wholism we need new concept program for education within environment. The middle school program of education with environment should be action oriented program between knowledge and attitude, which means from knowledge to action. The aim of open class education with environment program must consist of structural system model(fact · concept · generalization), pedagogy(explanation · participation) and evaluation(criticism · prediction).

Benzyl Benzenesulfonate 와 置換피리딘類의 反應에 關한 反應速度論的 硏究 (第5報).

이우붕,여수동,홍순영,Woo Bung Lee,Soo Dong Yoh,Soon Yung Hong 대한화학회 1977 대한화학회지 Vol.21 No.1

Benzyl benzenesulfonate와 3- 또는 4-치환피리딘의 反應速度를 아세톤 용매중, $35^{\circ}C$에서 전기 전도도법으로 측정하였다. Benzyl benzenesulfonate와 피리딘의 $S_N2$반응에서 Hammett 치환기 상수와 log k를 圖示하면 반응속도는 치환기의 電子를 주는 능력이 클 수록 增加하였고 4-$NH_2$ 피리딘은 Hammett의 ${\sigma}$값보다 ${\sigma}^+$로 잘 相關지어졌다. 이 結果는 $NH_2$기 ${\sigma}$와 피리딘 고리안의 N원자와 共鳴의 寄與가 큼을 나타낸다. Bronsted 圖示에서 4-$NH_2$와 電子를 당기는 기는 直線에서 反應이 큰쪽으로 벗어 났으며 이는 置換基에 대한 溶媒效果에 基因된다고 생각된다. 여기에 符合되는 반응메카니즘은 熱力學的 파라미터도 구하였다. The rate constant of the reaction of 3-or 4-substituted pyridines with benzyl benzenesulfonate in acetone at $35^{\circ}C$ were determined by an electric conductivity method. According to the Hammett plot, the rates were increased the electron donating ability at the $S_N2$ reaction of benzyl benzenesulfonate with pyridine and 4-$NH_2$ pyridine was correlated with ${\sigma}^+$ than Hammett ${\sigma}$ value. This result was explained that $NH_2$ group and N atom in pyridine are largely contribute by resonance. In Br$\"{o}$nsted plot, 4-amino and electron attracting group were deviated from the increasing part at linearity. It was considered to solvent effects on substituents. A mechanistic possibility was proposed to account for the results. Some activation parameters were also calculated.