비정질 Fe78Si9B₁₃ 합금의 구조와 자성 연구

이희복(Heebok Lee),송인명(In-Myoung Song),유성초(Seong-Cho Yu),임우영(Woo-Young Lim) 한국자기학회 1993 韓國磁氣學會誌 Vol.3 No.3

The X-ray diffraction pattern of amorphous Fe_(78)Si_9B₁₃ alloy was analyzed to obtain the radial distribution function (RDF) where the first peak was in the form of Gaussian function. The calculated coordination number of the form of Gaussian function. The calculated coordination number of the sample is 13.5, the mean distance between near-neighbor atoms r_0 is 2.595 Å. and a Gaussian parametet δr indicating near-neighbor atomic distribution is 0.27 Å. The temperature dependence of saturated magnetization at low temperature could be explained by spin wave excitations theory yielding the spin wave stiffness constant as 117.8 meVŲ. Also, we tried to fit the observed temperature dependence of saturated magnetization with the Handrich's equation of the modified molecular field theory for the amorphous ferromagnet. Nice fittings are obtained when we used the parameters △=0.32(S=1 / 2) and △=0,23(S=1), respectively. Finally, the calculated spin wave stiffness constant using the parameters and the structural data are 149 meVŲ for S=1 / 2 and 138 meVŲ for S=1, respectively. The mean exchange coupling integral between near-neighbor atoms was estimated to be 17.9 meV for S=1 / 2 and 6.7 meV for S=1.

연어(Oncorhynchus keta) 추출물 중의 Anserine, 단백질 및 철분 함량에 미치는 추출방법의 영향

민혜옥(Hye-Ok Min),박인명(In-Myoung Park),송호수(Ho-Su Song) 한국식품영양과학회 2017 한국식품영양과학회지 Vol.46 No.2

본 연구는 수산동물을 원료로 한 천연 anserine의 추출을 위해 여러 추출방법을 이용하여 연어로부터 anserine을 추출하였으며 각 추출방법에 따른 불순물(protein, iron)과 anserine의 함량 변화를 살펴보았다. Anserine 추출용 시료로서 연어의 적합성을 알아보기 위해 아미노산 함량을 분석한 결과 전체 아미노산 함량 중 anserine은 약 43.06%를 차지하는 것으로 나타나 추출용 시료로 적합한 것으로 나타났고, 추출방법에 따른 함량 변화를 살펴보기 위해 가열처리와 한외여과처리, 그리고 이온교환 및 한외여과처리를 이용한 추출방법에 따른 함량 변화를 살펴본 결과 60°C, 80°C, 100°C로 가열 처리한 경우 100°C 가열처리구가 총철과 단백질 등 불순물 제거에 가장 효과적이었으나, anserine 함량의 감소가 큰 것으로 나타났다. 한외여과방법을 통해 분자량을 조절한 추출물의 함량 변화를 측정한 결과에서는 가열처리 추출물보다 단백질 약 81%, 총철 함량이 약 97% 감소하는 결과를 나타내었으며, anserine의 함량 변화는 가열처리구와 비슷한 수준을 유지하였다. 또한, Dowex 1×8 수지를 이용하여 1차 이온교환을 하고 이온 교환한 추출물을 이용하여 MW 500까지 한외여과처리를 한 후 CM-cellulose를 이용하여 2차 이온교환을 병행한 추출물의 함량 변화를 살펴본 결과, 가열-한외여과처리 추출물보다 단백질 및 총철의 함량은 감소했지만 상대적으로 높은 anserine 함량을 나타내어 이온교환-한외여과처리 추출방법이 단백질 및 총철과 같은 불순물의 함량은 낮추면서 상대적으로 anserine의 함량을 높일 수 있는 추출방법이라 사료된다. 또한, 이러한 경향은 전기영동 및 HPLC를 통해 확인할 수 있었으며, LC/MS를 이용하여 표품 anserine과 1차 이온교환-한외여과처리 추출물, 2차 이온교환 추출물을 분석한 결과 모두 동일한 분자량(MW 240)을 가진 물질로 확인되어 1, 2차 이온교환 및 한외여과처리를 병행한 추출법이 anserine의 추출에 있어서 효율적인 방법으로 생각한다. Effects of extraction methods on reducing concentrations of pro-oxidants (total iron and protein) of salmon were determined. For development of the extraction process, the effectiveness of several extraction methods was determined and compared, including heat treatment (60, 80, and 100°C), ion exchange and carboxymethyl (CM)-cellulose column chromatography, and ultrafiltration (UF). Protein, total iron, and anserine contents of salmon extracts were 23.64 mg/mL, 16.20 μg/mL, and 5.47 mg/mL in non-heated extracts, 7.40 mg/mL, 2.32 μg/mL, and 5.20 mg/mL in heated extracts at 60°C, 7.64 mg/mL, 1.20 μg/mL, and 5.21 mg/mL at 80°C, and 7.04 mg/mL, 0.68 μg/mL, and 4.04 mg/mL at 100°C, respectively. Heating and UF decreased contents of protein and total iron, whereas only UF slightly decreased anserine content. Application of the primary ion exchange method increased the content of anserine up to 16%. Protein and total iron contents by the primary ion exchange method decreased by 70 and 98%, respectively. Secondary ion exchange (CM-cellulose) treatment after primary ion exchange and UF resulted in lower anserine content than the primary ion exchange method. However, the content of impurities (protein, total iron) was lower than in all other salmon extracts. Therefore, primary ion exchange, UF, and secondary ion exchange method were the best extraction processes in this study.

國民學校 및 中學校의 科學科 敎育課程의 系列性에 關한 硏究(物理科學分野)

宋寅命,禹榮均,金千中 공주대학교 사범대학 과학교육연구소 1976 과학교육연구 Vol.8 No.1

The results of the examination for the new science curriculum shows that the selection and arrangement of the contents of the teaching subjects is reasonable, but that the contents is difficult and the quantity of the subjects is abandant in both side of teaching and learning is dominant opinion. The results of the sequence analysis of the teaching contents are as follows: (1) the selection of the fundamental concepts, the level of teaching in primary and junior high school, and the sequence of the contents are of no gross faults. (2) The sequence of the "Waves" included the properties of light is cut off, because they do not deal with the waves in the energy concept in junior high school. (3) The unit, "Magnetic Effect of a Current" is dealt with in interaction unit in primary school, and on the other hand it is dealt with in energy unit in junior high school. So, there is room for examination in magnetic effect of current from a viewpoint of the concept development and sequence maintenance. Next, we discussed the theoretical background for the formation of sequence and especially have set up the hierarchy of the inquiring process, in the viewpoint of organizing the contents and techniques dealt with in inquiring activities. And, on the basis of a survey of public opinion, analysis of sequences, and general theory of formation of sequence, we proposed the general rule for organizing the sequence of the concepts and the process-skills between the primary and the junior high school, and for organizing the sequence of the seience curriculum in itself. On the basis of these discussion, we have selected some unit and framed the teaching programme which will serve as a good reference to the practical teaching. We hope that a large number of teachers put the contents proposed in this paper and teaching programme organized process-skills into practical use, and they research and practice the various teaching techniques continuously in order to reach to educational purpose of the new science curriculum.

Sputter 薄膜의 垂直磁氣異方性과 回轉履歷損失

宋寅命 공주대학교 사범대학 과학교육연구소 1984 과학교육연구 Vol.16 No.1

Magnetization(Ms), magnetic perpendicular anisotropy constant(??), sin 2θ and sin 4θ component of Ku (??,??), rotational hysteresis loss(??) and rotational hysteresis loss integral(J) of sputtered ?? film and amorphous ?? film are obtained from measurement of the magnetic torque and M-M loop. The samples show suitable characteristics as a vertical magnetic recording media. Field dependence of ?? and ?? of the samples exhibits complex changes with increasing external field. After annealing, magnetization and perpendicular anisotrory constant of the films increased in CoCr but decreased in Gd Tb Fe, respectively, but distribution of ?? of the films does not implied transitional change of magnetization mode. It is presented a magnetization mode considered the Ganssian type random uniaxial anisotropy as well as ordinal uniaxial anisotropy. The mode utilized to analyse distribution of magnetic dispersion and rotational hysteresis loss in the films but the mode is not utilized to check the magnetization reversal mode. On the basis of calculated critical diameter of colmn(??), at which the magnetization reversal transition occurs from coherent rotation to curling, distribution of anisotropy, rotational hysteresis loss integral(J) and of observed columnar diameter of the films or magnetic bubble observations of other worker, proposed the magnetization reversal modes occurs in CoCr film and in GdTbFe film.

現行 高等學校 物理 敎科書의 比較 分析 硏究

宋寅命,李春雨,李聖瑞 공주대학교 사범대학 과학교육연구소 1982 과학교육연구 Vol.14 No.1

An analysis on the main structure and contents of the current five physics text books of the high school was made from a statistical view point. Also some comparative characteristics of those five texts are checked and some ambiguities of physical representation are also pointed out. Finaly improvable suggestion for new curriculum of the high school physics are presented.

科學敎師敎育의 實態調査와 그 改善方案 : 物理敎師 敎育을 中心으로

朴泳喆,宋寅命,權寧駿,趙泰環,金英猷 공주대학교 사범대학 과학교육연구소 1986 과학교육연구 Vol.18 No.1

The presnt study is concerned with too purposes. One, immedi-ately, is to use the new physics (science) curriculum revision in the physics (science) teacher preparation institution. The other, ultimately, is to throw some suggestions in curriculum revision and the related agencies and persons. The problems set-up, in detail, are educational objectives, the contents of subject-matter, the methods of instruction, management of curriculum, teacners' problems and opinions to the future education of physics teacher. Not only to analyze the present curriculum but also to develop the new curriculum, three dimensions, theoretical background reflected recent advancement and current topics in science educa-tion, the present status of the secondary school curriculum, the literature survey, and the status quo of college and graduate school curricula preparing qualified science teacher of secondary school are considered in criteria of analysis. The results are the following. The educational objectives set-up are not clear-cur and not appropriate. The contents of subject are not so validated to objectives reflected current science curric-lum of secondary school and philosophy of science teacher educa-tion, and are not made into structure. The methods of assertion and proof and the creative thinking information processing, problem-solving, decision-making are encouraged in the present teaching. In conclusion, the new physics (science) teacher preparation curriculum model appropriate to our situation is presented. The new model emphasized the flexibility of the curriculum managem-ent and stressed the achievement of excellence in teaching of open-competence, the concept of science for all and multi-aspect of modern science and technology.

MathCAD를 사용한 X-선 회절상의 계산

조태경,송인명,권영준,이희복 공주대학교 사범대학 과학교육연구소 1994 과학교육연구 Vol.25 No.1

물질의 결정구조를 연구하는 데에는 일반적으로 X-선 회절상의 분석방법을 가장 많이 사용한다. 따라서 대학교육과정에서 고체물리학, 결정학, 재료과학 등 여러 분야에서 X-선 분광법에 대하여 공부한다. 그러나 실제 강의에서 X-선 회절의 이론을 X-선 회절상의 분석 방법과 직접 대응시켜 설명하기란 쉽지 않다. 본 논문은 MathCAD란는 software을 써서 X-선 회절 이론식으로 부터 간단하게 원하는 결정의 X-선 회절상을 계산하는 방법을 제시하고, X-선 결정구조 분석에 관한 학습과 연구에 활용할 수 있는 자료가 되도록 하였다. The most available technique for the study of the crystal structure is the analysis of X-ray diffraction patterns. For this reason lectures on X-ray diffractions have been given at universities in various subjects such as solid state physics, crystallography, material science, etc. However, it is not easy to teach the theory of X-ray diffraction in conjunction with the analysis X-ray diffraction patterns. In this study, we have used MathCAD software to calculate angles, intensities, and patterns of the X-ray diffraction of crystal using formula given in the theory without any complication. The program has shown in the study will be useful for research on crystallography as well as for teaching the subject.

고등학교 물리 교육과정의 시안작성

조태경,송인명 공주대학교 사범대학 과학교육연구소 1969 과학교육연구 Vol.2 No.1

This paper endeavors to show the possibility of designing a structured physics course for high school students which stems from the nature of modern physics and Bruner's theory of structure on school subject-matter. At first, weak points of conventional physics course are discussed and an attempt is made to clarify the trends of physics course reformation. From modern view point on the nature of physics and philosophy of science education, tentative objective for physics education are discussed. Also suggested are guidelines for selecting and organizing the subject-matter contents in consistent with the objectives. An attempt is made to draw a schematic sequence of basic concepts, from this scheme the contents of the course are arranged orderly in detail. Fields, conservative quantity, particle property and wave property are thought to be a most fundamental concepts in physics property and wave property are thought to be a most fundamental concepts in physics course. Alike to PSSC physics course, atomic structure is presented as a basic structure of the course. Finally, some diretions for implementing the curriculum are suggested in order to secure effetice learning of the course.

비정질 Fe80-xCoxSi6P14 합금의 자기특성

김택기,송인명,최창구,김용복 대한금속재료학회(대한금속학회) 1989 대한금속·재료학회지 Vol.27 No.1

The Structure and magnetic properties of amorphous Fe_(80-x)Co_xSi_6P_(14) (10≤X≤50 mole %) alloys have been investigated. The amorphous films were manufactured by a single roll rapid quenching method. The coordination number and the average distance of nearest neighbor were determined from X-ray diffraction experiment, using the dense random packing model, and are 12.2±0.2 and 2.50 ± 0.03A, respectively. The saturation magnetization and the average magnetic moment of a transition metallic atom at OK are 163emu/gr and 1.87 for X=10, and 130 emu/gr and 1.53 for X=50, respectively, The Curie temperature are 630 K for X=10 and 727 K for X=50. The saturation magnetostriction, coercive force and maximum permeability of the amorphous are 9×10^(-6)∼16×10^(-6), 0.2∼0.3 Oe and 4.0×10⁴∼5.0×10⁴, respectively. The Curie temperature increases with Co content While the saturation magnetization, the average magnetic moment, coercive force and the saturation magnetostriction decrease with Co content.

Co82 Cr18 박막의 자기이방성

이동철,김택기,송인명 대한금속재료학회(대한금속학회) 1989 대한금속·재료학회지 Vol.27 No.4

The structure, saturation magnetization and magnetic anisotropy of Co_(82)Cr_(18) thin film have been investigated. The films were prepared by rf-sputtering technique. The films consist of columnar grains, whose crystal structure is hcp. C-axis of the grains is aligned roughly parallel to the normal of film surface. Angular distribution of the c-axis is less than 6˚ with respect to the normal of the film surface. The saturation magnetization of film is 380 emu/㎤ at room temperature, and it increases about 20 emu/㎤ after heat treating at 400℃ for 1 hour. The easy axis of magnetization of the film is the normal direction of the film. The coefficients of magnetic of the film is the normal direction of the film. The coefficients of magnetic anisotrouty, K_(2θ) and K_(4θ) were 4.9×10^5 erg/㎤ and -5×10⁴erg/㎤, respectively. The magnitudes of the coefficient increase about 1.7 times by heat treatment at 400℃ for 1 hour.