SM45C의 Laser 표면개질 조건에 따른 마멸특성에 관한 연구

옥철호,임동욱,서영백,박흥식,전태옥 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.1

Surface modification of plain carbon steel (SM45C) by Laser are usually much finer and stronger than the base metals. Nd-YAG laser source changes and refines the microstructure of the near surface layer, leading to enhanced hardness and wear resistance. The present study was undertaken to investigate the wear behavior and a processing parameters such as, power density, pulse width, defocusing distance, and molten depth for surface modification. The wear test was carried out under different experimental condition using the wear test device and the annular surfaces of wear test specimens as well as mating specimen of alumina ceramics(Al_2O_3) was rubbed in dry sliding condition. The results show that molten depth and width depend on defocusing distance. The wear loss was much in lower speed range below 0.2m/sec and in higher speed range above 0.7m/sec, but It was little in intermediate speed range. It depends on oxidation and wear speed.

전라북도의 특정식물과 귀화식물

임동옥 호남대학교 산업기술연구소 2013 녹색산업연구 Vol.19 No.2

Vascular plant of Chollabuk-do was confirmed total 1,533 taxon, such as 141 family, 761 genus 1,320 species, 7 subspecies, 176 variants and 309 forma. Endangered Species help protect from the Ministry of Environment appear 9 species such as Cypripedium japonicum Thunb., Acanthopanax senticosus (Rupr. & Maxim.) Harms, Paeonia obovata Maxim. etc.. In these Endangered Species, Muju-gun region appear much 4 species as Cypripedium japonicum Thunb., Acanthopanax senticosus (Rupr. & Maxim.) Harms, Paeonia obovata Maxim., Cypripedium macranthum Sw. etc., and the following Namwon city and Gochang-gun are 2 species and Imsil-gun, Jeongeup city and Buan-gun show by each 1 species. Species of a close ecological examination in the floristic special plants were recorded to a total of 211 taxa; that is, class Ⅲ species were containing 152 taxa, class Ⅳ species were 27 taxa and class Ⅴ species were 32 taxa. Especially, these Species of a close ecological examination appeared extremely much as total 28 taxa in Wanju-gun region; such as class Ⅲ species are 23 taxa, class Ⅳ species are 2 taxa and class Ⅴ species were 3 taxa. Endemic species of korea were identified 53 taxa; such as Pteridophytes was 3 species, Gymnosperm was 1 species and in Angiosperms, Dicots and Monocots were 42 species and 7 species especially. Specify the rare and endangered plants, the Forest Service check out total 30 taxa; such as Crypsinus hastatus (Thunb.)C1pel., Japannese Eurya, Carpinus tsh1n1skii Maxim., Is1pyrum manshuricum (K1m.) K1m etc.. The naturalized plants were identified 108 taxa; that is Fallopia dentatoalata (F.Schmidt) Holub, Rumex acetosella L. and Phytolacca americana L. etc.. Among them the ecosystem disturbance wild plants were 9 species, as Rumex acetosella L., Sicyos angulatus L., Solanum carolinense L., Ambrosia artemisiifolia L., Ambrosia trifida L., Aster pilosus Willd., Hypochaeris radicata L., Lactuca scariola L. and Paspalum distichum var. indutum Shinners. 전라북도의 관속식물상은 141과 761속 1,320종 7아종 176변종 309품종 총 1,533분류군이 확인되었다. 멸종위기종은 광릉요강꽃, 가시오갈피, 산작약, 복주머니난 등 9종이 나타났다. 무주군에 광릉요강꽃, 가시오갈피, 산작약, 복주머니난으로 4종으로 가장 많았고 다음은 남원시와 고창군은 2종 그리고 다른 임실군, 정읍시 및 부안군은 각 1종씩 확인되었다. 식물구계학적 특정식물 가운데 정밀 생태조사 종에 해당하는 Ⅲ등급종은 152분류군, Ⅳ등급종 27분류군 및 Ⅴ등급종 32분류군으로 총 211분류군이 확인되었다. 특히 각 시군 가운데 완주군은 Ⅲ등급종 23분류군, Ⅳ등급종 2분류군 및 Ⅴ등급종 3분류군으로 총 28분류군이 확인되어 가장 많이 확인되었다. 한국고유종은 총 53분류군으로 양치류 3종, 나자식물은 구상나무로 1종, 피자식물로는 쌍자엽식물은 42종과 단자엽식물 7종으로 나타났다. 산림청 희귀종으로는 고란초, 사스레피나무, 개서어나무, 만주바람꽃, 쥐방울덩굴, 백작약 등으로 30분류군이 확인되었다. 귀화식물은 큰닭의덩굴, 애기수영, 소리쟁이 및 미국자리공 등 108분류군으로 확인되었다. 이들 가운데 생태교란 야생식물은 애기수영, 가시박, 도깨비가지, 돼지풀, 단풍잎돼지풀, 미국쑥부쟁이, 서양금혼초, 가시상추, 털물참새피 등 9종이 확인되었다.

함평천 일대의 수변식물

임동옥 호남대학교 산업기술연구소 2013 녹색산업연구 Vol.19 No.1

함평천 일대의 수변식물은 91과 265속 386종 49변종 및 2품종으로 총 437분류군이 확인되었다. 수생식물 중 정수식물은 12분류군, 부엽식물은 8분류군, 침수식물은 4분류군, 부유식물은 3분류군 그리고 습생식물은 14분류군으로 총 41분류군이었다. 희귀종은 가시연꽃, 창포 및 꽃창포로 3분류군이었다. 귀화식물은 7과 14속 17종 1변종 총 18분류군이 확인되었고 귀화율은 13.43%였다. 환경부 생태계교란종은 애기수영 1분류군이었다. The investigated waterside plants in Hampyungchon streams consist of total 134 taxa: 1 forms, 18 varieties, 115 species, 103 genera, 46 families. Among 41 taxa of hydrophytes, emerged plants were 12 taxa, floating-leaved plants were 8taxa, submerged plants were 4 taxa, and free-floating plants were 3 taxa and swamp plants were 14 taxa. Based on the list of Rare and Endangered plants, 3 taxa were recorded such as Euryale Ferox, Acorus calamus var. angustatus and Iris ensata var. spontanea. Naturalized plant were listed as 18 taxa: 7 families, 14 genera, 17 species, 1varieties, and naturalization index was 13.43%. The ecosystem disturbance plants assigned by the Ministry of Environment, 1 taxa were recorded as Rumex acetocella.

야생차 가공 기술 개발

고영옥,이종옥,신동국 진주산업대학교 농업기술연구소 2002 農業技術硏究所報 Vol.15 No.-

현대인의 기호에 맞는 지리산 반발효차(구황차)를 개발하기 위하여 옛날 제차법이 보존되어 있는 절간의 기술에 새로운 과학기법을 접목하여 개발한 차의 결과는 다음과 같다. 1. 총질소함량은 고온황토방의 녹차에 비하여 황토방의 녹차의 함량이 다소 높았다. 2. 총아미노산, 카페인 및 비타민-C함량은 황토방과 고온황토방의 제차방법에 따른 차이는 그다지 높지 않았다. 3. Geraniol함량은 황토방의 녹차(2회차)가 2.4%이며, 고온황토방의 녹차에 비하여 높은 경향이었다. 4. Pyrrole류의 pyrrole성분은 고온황토방이 다소 높았으나, ethyl pyrrole는 황토방에서 조성비가 현저히 높았다. 5. 꽃향기에 기여하는 Jasmone함량은 고온황토방의 녹차에서 조성비가 다소 높았다. In the order to taste go well with half-ferment green tea(kuhwang green tea) in the products of Mt. jiri garden were made try to development for modern people, according to once upon time there buddhist temple preserve course of green tea processing was approachable to new science of skill . The results were summarized as follows: 1. The amount of total nitrogen in green tea was high for yellow soil room than high temperature of yellow soil room 2. The amounts of total amino acid, caffeine and Vit. C in green tea were not difference according to yellow soil according to making method 3. The amount of geraniol in green tea was high tendency of yellow soil room(2.4%) than high temperature of yellow soil room 4. The component of pyrrole, in green tea was a few high such as high temperature yellow soil room, but the ethyl pyrrole was high ratio with yellow soil room. 5. The aroma component of amount of jasmone in green tea was a few high with high temperature of yellow soil room

社會發展과 女性의 社會的 地位와 役割 分析 : 人口의 老齡化 問題에 따른 代案 模索

朴東玉 聖心女子大學校 1985 論文集 Vol.17 No.-

後進性과 發展의 諸要因 分析

朴東玉 聖心女子大學校 1984 論文集 Vol.16 No.1

S-상 심실중격의 임상적 고찰

이동민,장경식,양종태,장대용,김종오,서영욱,고영엽,홍순표 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.1

Background: The sigmoid septum described an anatomical variation in the contour of the left ventricular outlet. It is related to degenerative change with aging. We observed clinical significance of sigmoid septum in Korean. Methods: Echocardiographic examination was performed in 434 patients. Sigmoid septum is defined as discrete bulging of the proximal interventricular septum with that thickness is greater than 1.3cm or the thickness is grater 1.5 times than adjacent mid interventricular septum in apical 3 chamber view. Result: The incidence of patient with sigmoid septum(septum patient) is 24.8% (male 8.4%, female 16.3%) . The incidence increases with age and is more common in women. The patients with sigmoid septum were compared with targeted groups, there was no significant difference in blood pressure between them, but in height and weight, the former were lower. (p<001, p<03). In the patients with sigmoid septum, weight and the surface area of a body have an opposite correlation with increase of age (p<03, r=-0.34) (p<04, r=-0.31) , but no decrease of height was found according to age increase (p=0.47, r=-0.11) The main reason patients with sigmoid septum ask echocardiolography and its clinical symptoms were abnormal results of previous electrocardiography and/or usual chest pain. Compared with control group, interventricular septal thickness is larger in septum patients (p<001). The thickness of interventricular septum located in subaortic left ventricular outflow tract is 1.6±0.3cm. There is another web like structure that continued from interventricualr septum to anterior free wall of left ventricle and the width is 1.6±0.4cm. A sign of insignificant obstruction due to left ventricular outflow was observed from three sigmoid septum patients. Conculusion: Septum patient is largely found in older age group and the body weight and body surface area are lower than control group. The body weight and body surface area are opposite correlation with age. So sigmoid septum is considered as structural change by weight reduction with aging. It is assumed that septum patients are related with asymptomatic ischemia because they have more abnormal ECG finding such as T wave inversion on precordial leads or standard leads, nonspecific ST-T change, LBBB etc. Sigmoid septum is not only proximal interventricular septal bludging but also another web like structure continuing to anterior wall of left ventricle.

감귤산업의 시장세분화(Market Segmentation) 분석

허정옥,이동철,김병숙 동의대학교 경제경영전략연구소 2004 經濟經營硏究 Vol.2 No.2

This study is analyzed on the segmentation of orange industry at the marketing viewpoints. But there were limits of restricted respondents at the Seoguipo Agricultural Coop and Seoul, Daegu, Busan Agricultural Coop, and thus this results were difficult to be generalized. The authors hoped that researches on the JejuDo's oranges might be executed long-term and systematically based on the limits and problems of this study.

간호실무 표준화 연구

조동숙,임숙빈,원종순,김옥수,김경애 서울보건대학 1995 서울보건대학 부설 병원경영연구소 논문집 Vol.1 No.1

A study on the standard of nursing practices. In order for new nurses to increase rapid adaptation and realistic nursing practice abilities in a new clinical setting, it is essential that there be a congruence with contents and methods of nursing practice education between the nursing education agency and clinical nursing practice managers. Therefore, a research on standard nursing practice for new nurses was conducted in order to induce common understanding about nursing practice between instructors of nursing college and head nurses of hospital, before opening 500∼700 bed sized hospital which used clinical practice setting for this nursing college and main working field after graduation. To achieve the above research purposes, nursing practice education materials for new nurses of two affiliated hospitals and four 500∼700 bed sized hospitals were collected. And then the contents of 6 materials were categorized according to theme, afterwards new contents of education materials were selected through discussions among the 5 researchers. Ultimately, the standard of nursing practices for new nurses was developed in hospital with 500∼700 beds.

불갑산지역의 식물상

임동옥 호남대학교 1999 호남대학교 학술논문집 Vol.20 No.2

The vascular plants in Bulgap-san(Mt.), Youngkwang-gun, chollanamdo, were consited of 436 taxa; 104families, 290 genus, 382 species, 51 varieties, 4 forma. From the floristic point of view, Bulgap-san belongs to the south province in Korea represented as Platycarya strbilacea, Cudrania tricuspidata, Allotus japonicus, Lindera obtusiloba, L. glauca, Euscaphis japonica, Meliosma myriantha, Eurya japonica, Halorrhagis micrantha, Chionanthus retusa, Trachelospermum asiaticum var. intermedium and Cymbidium goeringii. The endemic plants appeared to 26 taxa with V grade 2 species, Ⅳ grade 15 species, Ⅲ grade 7 species and Ⅱ grade 1 species was investigated these area. The mark evaluated by five grades was 194.