현행 고등학교 화학 교과서 비교 연구

오제직,최석남,이종길 공주대학교 사범대학 과학교육연구소 1994 과학교육연구 Vol.25 No.1

This paper aims to help the teachers select the textbook and provide them with the basic teaching materials as an ideal model by analyzing the organization (its element and appropriateness), volume amount, experiment matter, and the contents of the highschool chemistry textbooks, which have been revised in accordance with the 5th amended curriculum. The results of the analogy are as follow 1. Organization (its element and appropriateness) : Though having some distincitive characteristics, all the textbooks have almost the same introduction, development, summary, and further study, which are appropriate for the textbook model. 2. The volume amount: All the textbooks have almost the same frame, but s a big difference in such things as the number of pages, of pictures and charts, of Gothic terminology, and relative importance of each chapter. And all the materials such as pictures and photos are black-and-white, which we think are less helpful to the students` study. 3. The experiment matter: There`s a geat difference in the number, kinds, ratio contents and subject of experiment in each chapter. And there are some distinctive characteristics in the type, level, method, and investigative skills of the experiments. 4. The contents : There are considerable differences in the additional and reduced sections. Therefore, which book is selected is very important, and the teachers should not skip any class-work.

제6차 교육과정에 의한 중학교 과학 교과서의 비교 분석 연구 : 중학교 1학년 과학 교과서를 중심으로 On the First Year of Middle School

오제직,홍춘표,김준식 공주대학교 사범대학 과학교육연구소 1996 과학교육연구 Vol.27 No.1

The purpose of this paper is to give basic data which could be used for re-construction textbooks according to real situation of school in teaching, and could help to write new textbooks. For this study, five kinds of Science textbooks Ⅰ on the 5th curriculum and eight kinds of science textbooks Ⅰ on the 6th curriculum were selected as an analytical material. The methods of study are as follows; We analyzed and compared respectively with Githic type, Figure, Table, Research, Question, Experiment, Observation, Exercise and so forth in eight kinds of Sience textbooks Ⅰ and in average values of five kinds of textbook on the 5th curriculum. 1. The kinds of the Science textbook based on the 6th curriculum and 5th curriculum were respectively 8 and 5. 2. The quantity of new textbooks were much the same as the old textbooks, except for C and H textbooks. 3. It was found out that new textbooks decreased more than old textbooks in number of page of theory and explanation. 4. The number of Gothic type term was showed more Chapter Ⅰ and Ⅱthan other chapter in old and new science textbooks. 5. Figure and Table have intrinsic character-respectively. 6. The number of Study and Figure were unchanged as compared with old textbooks. but its of Table were decreased. 7. The number of Question was also unchanged, but it had almost subjective. 8. The kinds and numbers of experiments were increased as compared with old textbooks, and they had instinctive character respectively. From these analytical results of new science textbooks, we, that is, science teachers should select science textbook well and we should supply a thing of insufficiecy on science textbook in teaching.

고등학교 과학(Ⅱ) 교과서 내용의 비교·분석 연구

오제직,홍춘표,김화영 공주대학교 사범대학 과학교육연구소 1994 과학교육연구 Vol.25 No.1

The purpose of this research is to compare and to analyze eight different science textbooks Ⅱ (the last volume) that are presently in use at the high school. The items that were compared and analrzed are as follows: The construction of each textbook in quantity. The construction of experimentation contents. The construction of contents in textbooks. This study will provide the basic data that is needed to effectively accomplish aims of science education and to enable a guidance teacher to reconstruct the textbook properly to the real condition exiting in each school. The findings of the research are as follows: 1. There is little difference in quantity of materials. But there is difference in quantity of each unit. 2. The number of Gothic-type terms used in each textbook is not unified. The sort of Gothic-type terms used in each textbook is also varied. 3. Photographs and pictures are presented in black and white. They are used for only explaining. 4. Material and method used in experimentation are showed in many ways. But some units are given too much importance. 5. Contents are consisted variously according to authors under the basic frame of education curriculum.

다공질 실리콘 카바이드의 제작 및 광발광 성질

이기환,오제직,최석남,박병빈,이태호,김영유 공주대학교 사범대학 과학교육연구소 1998 과학교육연구 Vol.29 No.1

p-type α-SiC(4H, 6H, 15R polytype)를 사용하여 다공질 실리콘(porous silicon; PS)의 제작방법과 유사하게 HF/H₂O/C₂H??OH 용액에서 전기화학적으로 에칭을 하여 광발광 특성을 가지는 다공질 실리콘 카바이드(porous silicon carbide; PSC)를 제작하였다. PSC의 다공질의 분포는 전류밀도가 증가할수록 증가하고 다공질의 크기는 감소하였으며 광발광(photoluminescence; PL) 스펙트럼의 분석을 통해 전극 표면에서의 산화반응은 공급되는 전자의 양과 전류밀도에 의존하며 전류밀도가 증가할수록 전극의 산화반응은 억제된다는 결과를 얻었다. Porous silicon carbide(PSC) having photoluminescence(PL) can be prepared by a technique very similar to that used in porous silicon preparation, by electrochemical etching of crystalline p-type α-SiC(4H, 6H, 15R polytype) in ?? solution. The results show that porous distribution increase with increasing of the current densities while pore size decrease with that. Through the PL spectra analysis anodic oxidation of electrode surface was dependent on the amount of provided electrons and the current densities and inhibited with increasing of the current densities.

中學校 科學科의 實驗實習 敎材의 開發硏究(Ⅲ)

尹世重,趙泰璟,吳濟直,金溫植,金黎相 공주대학교 사범대학 과학교육연구소 1983 과학교육연구 Vol.15 No.1

Teaching materials available for the effective performance of laboratory exp-erimental work in middle school were developed: Physics part ; A measuring apparatus of uniformly accelerated motion and normal force of inclined plane was developed. Chemistry part ; An imploved Eudiometer applicable in measuring reaction mole ratio and usful for a gas generating apparatus was developed. Biology part ; convenient teaching materials observing law of dominance, law of segregation, law of independence, incomplete dominance and dihybrid cross were developed. Earth science part ; A laboratory teaching materials observing formation of wave, current and graded bedding, and identification of sedimentary rocks were developed. Putting the above results of study together, the integrated suggestions were made to the effective development of science education in middle school : 1. The contents of science textbook should be simplified to the direction of the understanding of essential principles and concept. 2. The development and dirtrihbution of various supplementary teaching materials (film, T.P., cassettes film, supplementary textbook, program teaching materials individual learning materials) are required. 3. The experimental laboratory should be equipped with common instruments and equipements. 4. Efforts and time are needed to science teachers, and so remission of sundry duties and arrangement of assistant are hopefully considered. 5. Teacher's research activities should be encouraged by administrative route or relevant institute.

실리콘 내열 도료의 개발에 관한 연구

서정목,류해일,홍춘표,오제직 公州大學校工科大學生産技術硏究所 1996 論文集 Vol.4 No.-

Nowdays, the development of industrial tequnique needs newly specialized materials which are stable under the chemical and physical conditions. The development of the paints which have heat-resistance at high temperature brings much profits to industries. Inorganic heat-resistance paints are used limitedly to coat special surface of machine by methods of CVD and PVD. These materials are goods of Pyrocat in Oodake Co. LTD., Neccera Coat in JCR Co. LTD., Pyromax in Aremco Co. LTD., and Ceratile in Elosol Co. LTD.. In this study, phtalocyanino silicon series and copolymer were prepared from phtalocyanine and corresponding silanes. The oligomeric materials were Dichloro-(phthalocyaninato)-silcon(PcSiCl₂), Dihydroxy-(phthalocyaninato)-silicon (PcSi(OH)₂), Dimethyldichlorosilane-Phthallocyaninato-silcon (MCS-PcSi) copolymer, Dimethyldichlorosilane-Hydroquinone (MCS-HQ) copolymer, Hydroquinone-Phthalocyanine (HQ- PcSi) copolymer, PcSi(O(CH₂)7CH₃)₂, PcSi(O(CH₂)9CH₃)₂, and PcSi (O(CH₂)11CH₃)₂. The oligomeric materals and other additives are ballmilled for about 16 hours and reduced to coating viscosity with xylene. And they were tested for coating membrane form, specific gravity, viscosity, pH, adhesion, pencil-hardness, chemicaland water-resistance, heat-resistance, impact resistance, and heat-resistance. Heat-resistance paints of phtalocyanino silicone series were developed, which are curing, 170℃, maximum operating temperature of 355℃, and maximum heat-resistant temperature of 560℃. The phtalocyanino silicone series paint which can be used in bonding agent and dye are expected to apply usefully in the industries.

[화학]란탄늄 및 네오디늄 금속의 착물합성과 전기화학적 특성

오제직(Je Jik Oh) 한국분석과학회 1993 분석과학 Vol.6 No.1

희토류 금속의 착물합성과 전기화학적 특성

吳濟直 공주대학교 사범대학 과학교육연구소 1993 과학교육연구 Vol.24 No.1

란탄늄 및 네오디늄과 몇가지 리간드와의 착물에 대한 전기화학적 거동을 0.05M TEAP를 지지전해질로 하여 아세톤용액에서 순환전압전류법으로 금속과 착물의 환원전류의 유형, 가역성, 안정도상수, 전류함수 등을 조사하였다. 환원파는 2단계로 나타났으며, 확산지배적인 반응이었고, 비가역적인 반응이었다. 또한 란탄족 금속이온의 착물에 대하여 안정도 상수가 측정되었다. The electrochemical behaviors of lanthanide ion(La and Nd) and lanthanide complexes with 2,2,6,6-tetramethyl-3,5-heptanedione(THD), Sym-hyroxydibenzo-16-crown-5(HD16C5) and Sym-Dibenzo-16-crown-5-oxyacetic acid(DI6C5A) ligands in aceton solution have been investigated by the use of cyclic voltammetry. The peak potential and peak current, their dependency on the concentration, temperature, the reversibilty of the eletrode reactions are described. The reduction of the lanthanide ions complexes in 0.05M TEAP proceed in two stages. The reduction occurs in one one-electron step and one two-electron step. These reduction step was irrevesible and the reduction current was diffusion dontrolled. Macrocyclic crown ethers, Sym-hyroxydibenzo-16-crown-5(HD16C5) and Sym-Dibenzo-16-crowm-5-oxyacetic acid(DI6C5) were prepared from 1.5-Bis(2-hydroxyphenoxy)-3-oxapentane with epichlorohydrin. The voltammetric behaviors of Ln(Ⅲ)-HD16C5 and Ln(Ⅲ)-D16C5 A complexes in aceton solution have been investigated by the voltammetric method. The composition and stability constants of lanthanide complexes were determined.

트래킹기법을 적용한 가동형 수평루버 PV의 건축물 적용 가능성에 관한 실험적 연구

최원제,오민석,이성주,최인창,이용직,김회서 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1

Use of a Secretion Trap Screen in Pepper Following Phytophthora capsici Infection Reveals Novel Functions of Secreted Plant Proteins in Modulating Cell Death.

Yeom, Seon-In,Baek, Hyang-Ku,Oh, Sang-Keun,Kang, Won-Hee,Lee, Sang Jik,Lee, Je Min,Seo, Eunyoung,Rose, Jocelyn K C,Kim, Byung-Dong,Choi, Doil APS Press 2011 Molecular plant-microbe interactions Vol.24 No.6

<P>In plants, the primary defense against pathogens is mostly inducible and associated with cell wall modification and defense-related gene expression, including many secreted proteins. To study the role of secreted proteins, a yeast-based signal-sequence trap screening was conducted with the RNA from Phytophthora capsici-inoculated root of Capsicum annuum 'Criollo de Morelos 334' (CM334). In total, 101 Capsicum annuum secretome (CaS) clones were isolated and identified, of which 92 were predicted to have a secretory signal sequence at their N-terminus. To identify differences in expressed CaS genes between resistant and susceptible cultivars of pepper, reverse Northern blots and real-time reverse-transcription polymerase chain reaction were performed with RNA samples isolated at different time points following P. capsici inoculation. In an attempt to assign biological functions to CaS genes, we performed in planta knock-down assays using the Tobacco rattle virus-based gene-silencing method. Silencing of eight CaS genes in pepper resulted in suppression of the cell death induced by the non-host bacterial pathogen (Pseudomonas syringae pv. tomato T1). Three CaS genes induced phenotypic abnormalities in silenced plants and one, CaS259 (PR4-l), caused both cell death suppression and perturbed phenotypes. These results provide evidence that the CaS genes may play important roles in pathogen defense as well as developmental processes.</P>