견사(絹絲) Lousiness에 대(對)한 연구(硏究) (1)

최병희 ( B. H. Choe ),김낙정 ( N. C. Kim ),박광의 ( K. E. Park ),남중희 ( C. H. Nam ) 한국잠사학회 1963 한국잠사곤충학회지 Vol.3 No.-

본 실험은 견직물 Lousiness의 가시조건을 세우고 잠견 Lousiness 검사를 초제련에 의하여 새로운 검사기준을 규정하는 동시에 견사선해부관찰로서 Lousiness 근절가능성과 잠견 Lousiness의 개선여부를 검사하는 데 목적이 있으며 다음과 같은 결과를 얻었다. 1. 직물섬유방향이 광선방향과 평면도입장에서 일치할 때 가장 잘 보인다. 그러나 광선방향과 섬유방향의 평면 각도가 커질수록 Lousiness 출현이 감소하고 어느 한계각(30도)을 초과하면 Lousiness가 보이지 않는다. 이 각도를 Lousiness 수평임계각(Lousiness Horizontal Critical Angle)이라고 명명하였다. 2. 광선의 대직물입사각도가 6도일 때 가장 잘 보이고 입사각도가 커짐에 따라 Lousiness 출현정도가 감소하고 역시 어느 한계각도(45도)를 초과하면 Lousiness가 보이지 않는다. 이 때의 한계각도를 Lousiness 수직임계각(Lousiness Vertical Critical Angle)이라고 명명하였다. 3. 직물조직으로서는 평직이 Lousiness 출현도가 가장 적고, 능직, 및 교직은 그의 출현도가 크다. 4. Lousiness를 3가지로 대별하고 일반세섬유형을 Lousiness A, 집단형을 Lousiness B, glucose형을 Lousiness C로 명명하였으며, 평점에 필요한 표준사진을 작성하였다. 5. 초정련방법으로서 8시간이 적당하였다. 6. 주섬유와 세섬유의 직경차가 클수록 Lousiness 발생이 심하며 일반 Lousiness는 주견단계의 1/4∼1/5의 직경이었다. 7. 견부위별로는 견양단부견층부위별로는 중층에 Lousiness가 많았는데 이것은 토계영견중의 견사긴완차에 기인한다. 8. 자웅간에는 자견이 웅견보다 Lousiness가 많았다. 9. 견사선해부로서 정상견사선에도 세섬유화할 가능성이 있음을 구명하였고, 여러 가지 이상견사선으로 Lousiness가 발생하게 되는 소인이 있음을 알았다. 또 Lousiness의 품종도태로 인한 개선은 이상견사선제거로 어느 정도 가능할 뿐이다. 10. 도태 후 차대견계는 초정련법으로 도태한 바 많은 효과를 얻었다. This treatise is to set up a fundamental condition of checking silk lousiness and to set up a new improving method of cocoon bave lousiness after super refining treatment. It is also studied whether silk lousiness can be eliminated through the observation of the silk gland, or the lousiness can be able to improve through such a study. The conclusions obtained in this paper are as follows. 1. Silk lousiness is able to be observed most properly when the light direction and the fiber direction are parallel in plan view of the silk cloth and the greater the angle between them is, the less the lousiness is observed. When, however, the angle is greater than some specific angle(30°), no more lousiness is observed. This specific angle is named by the author as Lousiness Horizontal Critical Angle. 2. Silk lousiness can be observed when the angle of light incidence against the silk cloth is six degrees, while the larger the angle is, the less the lousiness is observed. When, however, the angle is greater than same specific angle(45°) the lousiness disappears. Such a specific angle is named by the author as Lousiness Vertical Critical Angle. 3. The best textile composition to decrease lousiness defect is plan weave, while twill and satin weave show more lousiness with the same silk fiber. 4. Lousiness was classified as Lousiness A, B, and C of which A was the general lousiness, B was the group type, and C was the glucose type and the standard photographs for the lousiness grading of these types were prepared. 5. The proper soap-refining hours of silk for lousiness test was eight hours. 6. The greater the difference of fiber diameter between the cocoon single bave and the splitend was the more lousiness was composed. The normal splitends were measured as 1/4-1/5 of the main fiber. 7. The lousiness was found at the cocoon shape ends more than other parts, and found at the middle cocoon layer than other layer which was imagined to be as a result of poor uniform bave spinning of silk worm. 8. Female cocoon had more lousiness than the male cocoon. 9. It was found that there was a great possibility to have the splitends through the observation of the anatomical silkgland, and the author reached a conclusion that the lousiness can be improved to a certain degree only by the elimination of abnormal silk gland from the breeding aspects. 10. The cocoon bave of the offspring after super refining lousiness test and selection showed more improved lousiness defect than that of the parents.

NiCuZn계 Ferrite의 주파수 분산 특성

남중희(J. H. Nam),허원구(W. G. Hur),오재희(J. H. Oh),박진채(J. C. Park),한종수(J. S. Han),송병무(B. M. Song) 한국자기학회 1995 한국자기학회 학술연구발표회 논문개요집 Vol.5 No.2

냉간 포머 단조공정시 소재의 변형이력 및 비대칭 형상이 금형응력에 미치는 영향

정현철(H.C. Jung),김상우(S. W. Kim),이영선(Y. S. Lee),강범수(B. S. Kang),남중희(J. H. Nam) 한국정밀공학회 2010 한국정밀공학회 학술발표대회 논문집 Vol.2010 No.5월

견사(絹사) Lousiness에 관(關)한 연구(硏究) (2)

최병희 ( B. H. Choe ),김낙정 ( N. C. Kim ),박광의 ( K. E. Park ),남중희 ( C. H. Nam ) 한국잠사학회 1964 한국잠사곤충학회지 Vol.4 No.-

본 연구는 견사 lousiness와 유전관련성을 구명하여 도태가능성 여부를 조사하는 반면, 그 외 도태가능성이 불완전하였으므로 정련방법의 개량으로 인하여 lousiness의 개선을 기도하였던 바 얻어진 결론은 다음과 같았다. (A) lousiness의 유전관계문제 1. 교잡에 의한 lousiness 감소는 11.0%이었다. 2. lousiness의 유전은 불완전우성으로 유전한다. 3. lousiness를 발생하는 유전은 누적적으로 작용하고 2종 이상의 유전자가 lousiness 발생에 작용하는 것으로 고찰된다. 4. 잠견의 실용형질과 lousiness와는 유전상관관계가 없다. 5. 다계량계통의 잠품종에서 반드시 lousiness의 발생이 많다고 할 수 없다. 6. 본 실험에서의 lousiness 검경은 생계의 exforiation 시험결과와 동일하였다. (B) 정련에 의한 lousiness 개선문제 1. 양 ion계 화학연화제 0.2% 용액을 95℃ 하에서 30분간 처리할 때 lousiness 발생을 억제하면서 정련할 수 있었다. 2. 음 ion계 화학연화제는 생사정련에 불합격하였다. 3. 양 ion계 연화제를 상기조건하에 처리할 때 견사의 물리적성질에 변화가 없었다. 4. 석검정련은 lousiness 발생을 용이하게 시킨다. This treatise was carried out to study the hereditary phenomenon of silk lousiness and the interaction of genes related with silk lousiness. It was also studied how to improve the silk lousiness of general raw silk by refining process because the selective process was found as unsatisfactory method. The conclusions reached were as follows. A. Conclusions related with genetic problem. 1. The decreased effects of the lousiness were 11 % in the F1 hybrids. 2. Lousiness was considered to inherit as the incomplete dominance. 3. The effects of the lousiness gene were additive, and the lousiness of raw silk might be influenced by more than two genes. 4. The quantitative characters of cocoons were not genetically correlated with the occurrence of lousiness. 5. Lousiness could not be said to occur more in the heavy-cocoon strains. 6. The microscopic lousiness test of this paper showed the same result of the international exforiation test. B. Conclusions related with lousiness improvement. 1. Raw silk was able to be refined by the employment of 0.2% cationic softener solution for 30 minutes at 95℃, supressing the occurrence of lousiness. 2. Anionic chemical softener was not available for silk refining process. 3. The above cationic softener refining prosess did not cause any physical defect for the silk fiber. 4. Soap refining process caused silk lousiness easily.

냉간단조용 금형강의 절삭특성에 관한 연구

최원식(W. S. Choi),남중희(J. H. Nam),강창원(C. W. Kang),김원구(W. G. Kim),이인(I. Lee),권주리(J. R. Kwon),박세영(S. Y. Park),문희준(H. J. Mun) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.5

In this study we investigate the machining characteristics of tool material for cold forging by using the machining center. The test was in the SKD62 cold forging material by 2-edge endmill with cutting fluid. The coating conditions are depth of cut 1,2,3mm, WC-endmill, federate 20mm/min, cutting velocity 20m/min. The surface roughness increase as the depth of cut increase. Also cutting force increase whiles the depth of cut increase.

저온 소결형 NiCuZn ferrite의 특성에 미치는 Mn의 치환첨가 영향

허원구(W. G. Hur),남중희(J. H. Nam),오재희(J. H. Oh),박진채(J. C. Park),송병무(B. M. Song) 한국자기학회 1995 한국자기학회 학술연구발표회 논문개요집 Vol.5 No.1

냉간 금형에서 표면 패턴으로 인한 유체윤활

권주리(J. R. Kwon),남중희(J. H. Nam),이영선(Y. S. Lee),강창원(C. W. Kang),이진길(J. G. Lee),손재환(J. H. Son),최원식(W. S. Choi) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.10

In this study, we will simulate the hydrodynamic load capacity and equivalent roughness for textured surface in oil lubrication for well understanding of friction properties by hydrodynamic lubrication theory. In the dimple pattern, dimple depth is 2μm and dimple size is 40μm, 70μm, and 100μm. Calculated Rrms<SUP>*</SUP> is 47nm from measured value of Rrms,1 and Rrms,2. Viscosity was 3.125Pa · s for paraffin oil. It can be seen that hydrodynamic load capacity WHL increased with the decreasing of minimum oil film thickness hmin. And if we compare the maximum WHL at hmin=Rrms<SUP>*</SUP>,100μm diameter dimples showed largest of all as 9.2N. Maximum WHL at hmin=Rrms<SUP>*</SUP> is 7.5N and 6.2N for 70μm, 40μm diameter dimples, repectively. WHL of the flat slider shows almost of zero. It was shown the hydrodynamic lubrication in dimple patterning and could be seen that an increase in durability.

絹絲 LOUSINESS 에 對한 硏究(Ⅰ)

崔炳熙,金洛禎,朴光義,南重熙 서울대학교 1963 서울대학교 論文集 Vol.14 No.-

This treatise is to set up a fundermental condition of checking silk lousiness and to set up a new improving method of cocoon bave lousiness after suer refining treatment. It is also studied whether silk lousiness can be eliminated through the observation of the silk gland or the lousiness can be able to improve through such a study. The conclusions obtained in this paper are as follows. 1. Silk lousiness is able to be observed most properly when the light direction and the fiber direction is paralleled in plan view of the silk cloth and the greater the angle between them is, the less the lousiness is observed. When, however, the angle is greater than some specific angle (30˚), no more lousiness is observed. This specific angle was named by the author as Lousiness Horizontal Critical Angle. 2. Silk lousiness can be observed when the angle of light incidense against the silk cloth is six degree, while the large the angle is, the less the lousiness is observed. When, however, the angle is greater than some specific angle(45˚), the lousiness disappears. Such a specific angle was named by the author as Lousiness vertical Critical Angles. 3. The best textile composition to decrease lousiness defect is plan weave, while twill and satin weave show more lousiness with same silk fiber. 4. Lousiness was classified as Lousiness A, B and C of which A was the general lousiness, B was the group type, and C was the glucose type one, and the standard photographs for the lousiness grading of these types were prepared. 5. The proper soap refining hours of silk for lousiness test was determined as eight hours. 6. The greater the difference of fiber diameter between the cocoon single bave and the splitend was, the more lousiness was composed. The normal splitends were measured as 1/4-1/5 of the main fiber. 7. The lousiness was found at the cocoon shape ends more than other parts, and found at the middle cocoon layer than other layer which was imagined to be as a result of poor uniform bave spinning of silk worm. 8. Male cocoon had more lousiness than the female cocoon. 9. It was found that there was a great possibility to have the splitends through the observation of the anatomical silk gland, and the author reached as conclusion that the lousiness can be improved some only be elimination of abnormal silk gland from the breeding aspects. 10. The cocoon bave of the offspring after super refining lousiness test and selection showed more improved lousiness defect than that of the parent.

絹絲 LOUSINESS에 對한 硏究 (Ⅱ)

崔炳熙,金洛禎,朴光義,南重熙 서울대학교 1964 서울대학교 論文集 Vol.15 No.-

This treatise was carried out to study the heredity phenomenon of silk lousiness and the interaction of genes related with silk lousiness. It was also studied how to improve the silk lousiness of general raw silk by refining process because the mutational or selective process was found as unsatisfactory method. The conclusion reached were as follows. A. Conclusions related with genetic problem. 1. The decreased effects of the lousiness were 11% in the F₁hybrids. 2. Lousiness was considered to inherit as the incomplete dominance. 3. The effects of the lousiness gene were additive, and the lousiness of raw silk might be influenced by more than two genes. 4. The quantitative characters of cocoons were not genetically correlated with the occurance of lousiness. 5. Lousiness could not be said to occur more in the heavy-cocoon strains. 6. The microscopic lousiness test of this paper showed the same result of the international exforiation test. B. Conclusions related with lousiness improvement. 1. Raw silk was able to refine by the employment of 0.2% cationic softener solution for 30 minutes at 95℃ refining bath without the occurance of lousiness. 2. Anionic chemical softener was not available for silk refining process. 3. The above cationic softener refining process did not cause any physical defect for the silk fiber. 4. Soap refining process caused silk lousiness easily.