경강선의 평압가공성에 미치는 조직과 가공의 영향에 대한 연구

이인섭,김동훈,김원태 대한금속재료학회(대한금속학회) 1984 대한금속·재료학회지 Vol.22 No.5

Microstructure analysis and tensile test were performed to study the effects of microstructure and drawing on the flat rolling of high carbon steel wires. Critical reduction ratio in flat rolling increases due to the developed fibrous microstructure as drawing ratio increases, and is roughly proportional to the area reduction ratio in tensile test. Edge crack is formed at the angle of 45 degree to the rolling direction due to tensile stress. Critical width to thickness ratio of Stelmor treated wire is superior to that of the lead patenting treated wire. Sorbite created in the lead patenting treatment is considered to be deterious to flat rolling of wire.

이집트 유목문화에 나타난 성과 속 연구

이인섭 한국외국어대학교(글로벌캠퍼스) 중동연구소 2007 중동연구 Vol.26 No.1

A Study on the Nomadic Culture in Egyptbetwen Sacredness and SecularityLe, In-SeopHUFSThis tudy is to investigate the sacrednes and secularity이 논문은 년 정부 교육인적자원부 의 재원으로 한국학술진흥재단의* 205 ( )지원을 받아 수행된 연구임(KRF-205-079-AS0146)한국외국어대학교 통번역대학원 한아과 부교수 *74 중동연구 제 권 호26 1features in the nomadic ulture in Egypt.This tudy is the first year's result of the thre-year proje ctsuported by Korea Research Foundation under the title of "AStudy on the Arab's Way of Thinking through the UnderlyingCultural Data Writen in Arabic: Colapse of the Boundarybetwen Sacrednes and Secularity". So, This tudy starts w iththe underlying cultural data writen in Arabic, not by thefieldwork or survey in Egypt.This tudy includes Egyptian omadic haracteristics andconsciousnes in the colors, gretings, an optative xpres sions.It includes also Egyptians' senses of tabos, sexualdiscrimination, and some features of animism in their everydaylife such as 'bidah' in Arabic (which means 'mixed formbetwen religion and animism'), sacrificial ofering, env iouseye(ayn al- sd, ayn al- sid, ayn sharrah), fivefingers(amsah, amsah), jar-breaking for escape frommisfortune, some ways of driving away devils(ifrt) byincantation and amulet, saint worship, etc.As a result, the study was able to introduce the Egyptiannomad's way of thinking mixed with Islam, Coptic Christianityand folk, because the belief in the supernatural power could notbe xcluded from primitive human being not even in Egypt, butin Korea lso.

The effect of processing temperature and time on the surface properties of plasmaradical nitrided SKD61 steel

이인섭,박익민 한양대학교 세라믹연구소 2006 Journal of Ceramic Processing Research Vol.7 No.2

Plasma-radical nitriding was performed to harden the surface of SKD 61 steel for 1-10 hours at a temperature range of 450- 550oC. This process involved the use of NH3 gas instead of N2 gas which is employed for the well-established plasma-nitriding method. An NH radical, which played a key role to produce a nitrogen diffusion layer without the formation of the brittle compound layer, was generated in a gas mixture of NH3 and H2. One of the main advantages of the plasma-radical nitriding is to improve the surface hardness by maintaining the roughness of the initial polished surface. The microstructures and material properties of the radical- nitrided layer were characterized in order to investigate the effects of various radicalnitriding processing parameters. In addtion, radical nitriding produces better surface roughness, compared with conventional ion nitriding.

Influence of Temperature and Time on Low-Temperature Plasma Nitrocarburizing of AISI 304L Austenitic Stainless Steel

이인섭 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.3

The major drive for the applications of low-temperature plasma treatment in nitrocarburizing of austenitic stainless steels lies in improved surface hardness without degraded corrosion resistance. The low-temperature plasma nitrocarburizing was performed in a gas mixture of N2, H2 and a carbon-containing gas such as CH4. The in uence of the processing temperature (380-430℃) and time (4-20 h) on the surface properties of the nitrocarburized layer was investigated. The resultant nitrocarburized layer was a dual-layer structure, which was comprised of a N-enriched layer (γN) with a high nitrogen content on top of a C-enriched layer (γC) with a high carbon content, leading to a significant increase in surface hardness and corrosion resistance. Chromium nitride was formed in the N-enriched layer only for the specimen treated at 430℃. The surface hardness and the layer thickness increased up to about 1200 HV0.01 and 15μm with increasing temperature and time, respectively. No loss in corrosion resistance was observed, except for the specimen treated at 430℃. The major drive for the applications of low-temperature plasma treatment in nitrocarburizing of austenitic stainless steels lies in improved surface hardness without degraded corrosion resistance. The low-temperature plasma nitrocarburizing was performed in a gas mixture of N2, H2 and a carbon-containing gas such as CH4. The in uence of the processing temperature (380-430℃) and time (4-20 h) on the surface properties of the nitrocarburized layer was investigated. The resultant nitrocarburized layer was a dual-layer structure, which was comprised of a N-enriched layer (γN) with a high nitrogen content on top of a C-enriched layer (γC) with a high carbon content, leading to a significant increase in surface hardness and corrosion resistance. Chromium nitride was formed in the N-enriched layer only for the specimen treated at 430℃. The surface hardness and the layer thickness increased up to about 1200 HV0.01 and 15μm with increasing temperature and time, respectively. No loss in corrosion resistance was observed, except for the specimen treated at 430℃.

Development of Plasma Nitrocarburizing and Post-Oxidation Technology for the Replacement of Cr 6+ Plating for Application to Vehicle Engine Shafts

이인섭 대한금속·재료학회 2008 METALS AND MATERIALS International Vol.14 No.1

Plasma nitrocarburizing and post-oxidation treatments were performed to improve the wear and corrosion resistance of S45C steel. Plasma nitrocarburizing was conducted for 3 h at 57℃ in a nitrogen, hydrogen and methane atmosphere to produce the ε-Fe2-3(N,C) phase. It was found that the compound layer produced by plasma nitrocarburising was predominantly composed of the ε-phase with traces of the γ′-Fe₄(N,C) phase. The thickness of the compound layer was approximately 12 μm and the diffusion layer was approximately 300 μm in thickness. Plasma post oxidation was performed on nitrocarburized samples with various oxygen / hydrogen ratios at a constant temperature of 500℃ for 1 h. The very thin magnetite (Fe₃O₄) layer 1 μm to 2 μm in thickness on top of the compound layer was obtained by plasma post oxidation. It was also confirmed that further improvement of the corrosion characteristics of the nitrocarburized compound layer was possible with an application of the superficial magnetite layer. Finally, throttle valve shafts of S45C steel were treated under optimum plasma processing conditions. Accelerated life time test results using a throttle body assembled with a shaft treated by plasma nitrocarburising and post oxidation showed that plasma nitrocarburizing and plasma post-oxidation processes could be a viable technology in the very near future in place of Cr6+ plating.

부산?경남 지역에서 수집된 재래종 찰옥수수의 과피 두께에 대한 고찰

이인섭,김순임 한국생명과학회 2007 생명과학회지 Vol.17 No.2

To get abundant germplasm for developing new waxy corn varieties, pericarp thickness was measured and other factors were evaluated with a total of 142 Korean local waxy corn lines collected from various parts of Busan City and Gyungnam Province. The average pericarp thickness of Korean local waxy corn lines collected was 40.61 ㎛ and the rate of thin pericarp under 50 ㎛ was 70.4%. The pericarp thickness compared by the regions collected showed non significant difference, but which compared by the ear row number per ear showed significant difference (MS = 597.52*). Correlation between pericarp thickness and row numbers per ear was low (-0.93).

아세안 국가의 산업안전보건체제 증진 및 발전방향

이인섭 한국정책학회 2013 한국정책학회 추계학술발표논문집 Vol.2013 No.-

아랍어 복수형에 관한 연구

이인섭 한국아랍어아랍문학회 2023 아랍어와 아랍문학 Vol.27 No.2

This study handles Arabic plurals. So far, the regular plural of Arabic has been explained based on its writing system; however, this research tries to explain the regular plural formation mechanism phonetically. In other words, when the last vowel of the single form is stretched to become a long vowel, it becomes a plural form. The nouns denoting people do not follow the regular masculine plural form in Arabic. It is important that if a noun is used in the regular plural form, it is no longer a true regular plural form, but the similar form of a regular plural form. In addition, if a Maṣdar(commonly called a gerund) follows plural form rules, word class of the vocabulary will have converted form from Maṣdar to noun because the Maṣdar does not have a plural form. Finally, the researcher will handle the plural form that is taught wrongly or incorrectly in Korea. 이 연구는 아랍어의 복수형을 다룬다. 지금까지 아랍어의 규칙 복수형은 표기 기준으로 설명해 왔다. 그러나 본 연구에서는 규칙 복수형 형성 메커니즘을 음성학적으로 설명하고자 한다. 그것은 단수 어간의 마지막 모음이 장모음화 되어 복수형이 된다는 것이다. 사람을 의미하는 명사는 아랍어의 일반적인 남성 복수형으로 사용되지 않는다. 중요한 것은 명사가 규칙 복수형으로 사용되면 그것은 더 이상 규칙 복수형이 아니라, 규칙 복수형 유사형이다. 또한 마쓰다르(일반적으로 동명사라고 함)가 복수형 규칙을 따른다면 그 어휘의 종류는 더 이상 마쓰다르가 아니라 마쓰다르에서 명사화된 어휘의 복수형이다. 그 이유는 마쓰다르에는 복수형이 없기 때문이다. 마지막으로 연구자는 한국에서 정확하지 못하게 가르치거나 잘못 가르치는 복수형에 관하여 다룰 것이다.

연구보고서 소개 - 생물학적 인자 측정 및 평가방법 연구(I)

이인섭,Lee, In-Seop 대한산업보건협회 2010 산업보건 Vol.265 No.-

부산, 경남지역에서 수집된 한국 재래종 옥수수의 이삭 및 낟알의 특성

이인섭,박종옥 한국생명과학회 2001 생명과학회지 Vol.11 No.2

In order to reserve abundant germplasm for breeding new corn varieties, major characteristics of ears and kernels were evaluated with a total of 210 Korean indigenous maize lines collected from various parts of Pusan City and Kynugnam Province, Korea The average ear length and ear diameter of indigenous maize lines collected was 12.52cm and 3.33 cm, respectively. The average ear weight of the maize lines was 63.70g. The ears collected from the north-west mountainous region were the heaviest, and The ears from the south coastal region were the lightest. The average kernel weight per ear was 50.54g, and the kernel weight per ear by region showed a tendency similar to the ear weight. The kernels of maize lines collected in the north-west mountainous region were the longest, and kernel width and thickness were the largest in the west plain region. 100 kernel weight and embryo weight the largest in the lines collected in the north-west mountainous region. The degree of pericarp thickness was the smallest in the lines collected in the south coastal region, and largest in the lines collected in the west plain region. Except for the correlation coefficient width and 100 kernel weight, all correlation coefficients between the characteristics of the lines showed highly significant differences.