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제7차 교육과정에 따른 산ㆍ염기 단원의 STS과학 교육에 적합한 CBL 실험 프로그램의 개발
이광필,김동화,최성호,류재정,이무상 慶北大學校 師範大學 科學敎育硏究所 2001 科學敎育硏究誌 Vol.25 No.-
This study developed the 'advanced-supplementary' course experimental program with CBL(Calculator-Based Laboratory) system in conformity with the reform of the 7th science curriculum and applied the CBL experimental program to 'acid-base' chapter of middle-high school. The results of this study shows that a practical use of CBL system as powerful instrument can be applied to experiment program of 'acid-base' chapter in order to causes learner's motivation and enlarge a sphere of inquiry-activity in science.
Helicobacter pylori 편모 유전자의 클로닝 및 염기서열 분석
이광호,이우곤,조명제,도영미,백승철,강경희,박필성,이상룡 경상대학교 유전공학연구소 1993 遺傳工學硏究所報 Vol.12 No.-
A λgt11 expression libary of H. pylori DNA in E. coli Y1090 was screened with flagellin-specific rabbit antiserum for molecular cloning of the flagellin gene of H. pylori. A positive clone, λHPF4, was obtained and the recombinant antigen expressed from λHPF4 was a fusion protein with the molecular weight of 168kd. Sequence analysis of antigen-encoding DNA showed that an open reading frame composed of 1,536 nucleotides encodes a polypepride with a oredicted molecular size of 54kd. This open reading frame did not show the homology with flaA gene encoding 56kd protein of H. pylori and was confirmed as a unique sequence through homoligy searching. Therefore, the cloned antigen is supposed to be the carboxy-terminal region of the other flagellin protein of H. pylori, flaB, with the molecular weight of 58kd.
치과 치료 경험이 아동의 치과의사와 치과 치료에 대한 태도에 끼치는 영향에 관한 조사 연구
허용욱,이광희,문필성,김대업 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.2
The purpose of this study was to investgated the effect of dental experience the attitude of children toward the dentist and the dental treatment.The subject of the study were 1,090 children from second grade to forth grade of three elementary schools of the Iksan city.The children were investgated by the questionnaire which cosisted of seven items about the attitude toward the dentist,the attitude toward the dental treatment,the dental treatment experience,the number of times of dental treatment,the last time of the dental visit,pain of dental treatment,and fear of dental treatment. There were significant differences among the grades in the attitude toward the dental treatment and in the attitude toward the dentist(P<0.01).Second grade children had the most negative attitudes.But,there were no differences between boys and girls.Girls felt more pain and fear than boys(P<0.01).There were significant relationships between the pain and the attitude toward the dentist,between the pain and the attitude toward the dentist, and between the fear and the attitude toward the dental treatment(P<0.01,all).The number of dental visit had significant relationship with the attitude toward the dental treatment(P<0.05).There was significant relationship between the pain and the fear between the attitude toward the dentist and the attitude toward the dental treatmen.
Lee, Kwang-Pill,Gopalan, Anantha Iyengar,Lee, Se Hee,Kim, Min Seok IOP Pub 2006 Nanotechnology Vol.17 No.2
<P>Aqueous dispersions of chiral polyaniline nanobundles (C-PANI-NB) were prepared by simple interfacial polymerization using immiscible organic/aqueous biphasic systems. C-PANI-NB arise from the intertwining of PANI chains over interconnected units of cyclodextrin sulfate. Formation of C-PANI-NB was witnessed only in the aqueous phase, irrespective of the organic solvent used in the interfacial polymerization. The PANI that formed in the aqueous phase existed in the C-PANI-NB form. This was evident from field emission transmission microscopy. The chiro-optical properties of C-PANI-NB are strikingly different from those of simple chiral polyaniline. C-PANI-NB exhibit size selective enantioseparation. C-PANI-NB are expected to find applications as modifiers in capillary electrophoresis, as catalysts for size selective asymmetric synthesis and in biological sensors. Also, the method adopted here for the preparation of C-PANI-NB could be extended to other conducting polymers. </P>
Lee, Kwang-Pill,Gopalan, Anantha Iyengar,Lee, See-Hee,Showkat, Ali Md,Nho, Young Chang Wiley Subscription Services, Inc., A Wiley Company 2006 Journal of applied polymer science Vol.102 No.4
<P>Conducting polydiphenylamine was used to encapsulate silica nanoparticles through the oxidative polymerization of diphenylamine in the presence of ultrasonic irradiation. The polymerization was performed in the presence of sodium lauryl sulfate as a surfactant. Experiments performed in the absence of ultrasound clearly demonstrated that the application of ultrasonication played multiple roles in the preparation of a composite of polydiphenylamine with silica nanoparticles. Ultrasonication dispersed the silica nanoparticles, converted sodium lauryl sulfate to lauryl alcohol, and augmented the dispersion of the silica-nanoparticle/polydiphenylamine composite in an organic medium. Silica-nanoparticle/polydiphenylamine composites were also prepared in the absence of ultrasound and/or sodium lauryl sulfate. The silica-nanoparticle/polydiphenylamine composites were characterized with Fourier trans form infrared spectroscopy, ultraviolet–visible/near-infrared spectroscopy, and thermogravimetric analysis. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3912–3918, 2006</P>
The Study of Doxorubicin and its Complex with DNA by SERS and UV-resonance Raman Spectroscopy
Lee, Chul-Jae,Kang, Jae-Soo,Kim, Mak-Soon,Lee, Kwang-Pill,Lee, Mu-Sang Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.8
The interaction of the antitumour agent doxorubicin with calf thymus DNA is investigated in an aqueous solution at a pH level of 6-7 with molar ratios of 1/10. A UV-resonance Raman spectroscopy and surface enhanced Raman spectroscopy are used to determine the doxorubicin binding sites and the structural variations of doxorubicin-DNA complexes in an aqueous solution. Doxorubicin intercalates with adenine and guanine via a hydrogen bond formation between the N7 positions of purine bases and the hydroxyl group of doxorubicin.
Lee Chang-Hyun,Cho Hwang-Yoon,Kil Kwang-Soo,Lee Gun-Soup,Yoon Ji-Yeon,Lee Young-Jae,Kim Eun-Young,Park Se-Pill,Lim Jin-Ho 한국발생생물학회 2003 한국발생생물학회 학술발표대회 Vol.2003 No.1
The purpose of this study is to evaluate an efficacy of in vitro differentiated human embryonic stem (hES, MB03) cells expressing Nurr1 in relief of symptomatic motor behavior of Parkinson's disease (PD) animal models MB03 was genetically modified to express Nurr1 protein and was induced to differentiate according to 2-/4+ protocol using retinoic acid and ascorbic acid. The differentiation-induced cells were selected for 10 to 20 days thereafter in N2 medium. Upon selection, cells expressing GFAP, TH, or NF200 were 38.8%, 11%, and 20.5%, respectively. in order to examine therapeutic effects of the differentiated cells in PD animal model, rats were unilaterally lesioned by administration of 6-kydroxydopamine HCI (6-OHDA) into medial forebrain region (MFB, AP -4.4 mm, ML 1.2 mm, DV 78 mm with incision bar set at -2.4 mm), as a reference to bregma and the surface of the skull. Confirmation of successful lesion by apomorphine-induced rotational behavior, differentiated cells were transplanted into the striatum (AP 1.0, ML 3.5, DV -5.0; AP 0.6, ML 2.5, DV -4.5). Improvements of asymmetric motor behavior by the transplantation were examined every two weeks after the surgery. In two weeks, numbers of rotation by the experimental rats were (P<0.05) of the number before transplantation, however, the ratio increased slightly to in six weeks. In contrast, the ratio of sham-grafted animals ranged from 112.3+8.5% to 139.2+28.9% during the examination. Immunohistochemical studies further confirmed the presence, survival, migration, and expression of TH of the transplanted human cells.
Lee, Kwang-Pill,Choi, Seong-Ho,Park, Yu-Chul,Bae, Zun-Ung,Lee, Mu-Sang,Lee, Sang-Hak,Chang, Hye-Yong,Kwon, Se-Mok,Kazuhiko Tanaka Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.9
The simultaneous determination of anions ($SO_4 ^{2-},\;Cl^-,\;and\;NO_3^-$) and cations ($Na^+,\;NH^{4+},\;K^+,\;Mg^{2+},\;and\;Ca^{2+}$) in natural water obtained by Nakdong River waters system in Korea were performed by ion-exclusion/cationexchange chromatography with conductimetric detection. The stationary phase was a polymethacrylate-based weakly acidic cation-exchange resin column in the $H^+$-form and a weak-acid eluent. When using only a 1.4 mM sulfosalicylic acid/6 mM 18-crown-6 ether as an eluent, good resolution of both anions and cations, minimum time required for the separation, and satisfactory detection sensitivity were obtained in a reasonable time. The method was successfully applied to the simultaneous determination of anions and cations in natural waters.