Cu-Si계삽입금속을사용한페라이트계스테인리스강의아크브레이징에서인장성질에미치는입열량의영향

김명복 ( Myung Bok Kim ),김상주 ( Sang Ju Kim ),이봉근 ( Bong Keun Lee ),원신건 ( Xin Jian Yuan ),윤병현 ( Byoung Hyun Yoon ),우인수 ( In Su Woo ),강정윤 ( Chung Yun Kang ) 대한금속재료학회 ( 구 대한금속학회 ) 2010 대한금속·재료학회지 Vol.48 No.4

The effects of heat input and different microstructureswere investigated on the tensile-shear properties of an arc-brazed joint of theferritic stainless steel 429EM using a Cu-Si insert alloy. The brazing speed was fixed at 800 mm/min whilethe brazing current varied from 80 to l20A. For abrazing current lower than l00A, fracturing occurred at the joint root in the direction perpendicular to the tensile load. As the brazing current increased to l20A, fracturing occurred at the base metal or the joint root. The joint and the base metal had very similaryield and tensile load values. However, the amount of elongation was decreased considerably compared towhen the base metal was used. The fracturingbegan at the triple point of the root part and was classified into three types. The difference in the tensile-shear properties was closely related tothe three fracturetypes.

내병성 다수성 흰색 참깨 품종 ‘유미’

김성업(Sung-Up Kim),이명희(Myoung-Hee Lee),배석복(Sug-Bok Pae),오은영(Eun-Young Oh),김정인(Jung-In Kim),하태정(Tae-Jung Ha) 한국육종학회 2020 한국육종학회지 Vol.52 No.1

Sesame (Sesamum indicum L.) is a traditional oil seed crop grown in Korea. Sesame cultivation in Korea, however, is difficult and the yield is still very low. As such, a sesame variety, ‘Yoomi,’(Sesamum indicum L.) with disease resistance and high yield was developed in 2012. It was obtained by crossing ‘Yangbaek’ and SIG950480-6-3-1 in 2001. ‘Yoomi’ has few branches and a triple capsule per node. Notably ‘Yoomi’ exhibited a resistance to Phytophthora blight disease and a lodging resistance in the field. The yield of ‘Yoomi’ was about 1.06 ton per hectare, 8% higher than that of ‘Yangbaek’. ‘Yoomi’ crude fat content was 49.7%, and lignan content was 6.62 mg/g. This variety will contribute to increasing sesame production in Korea and will be utilized in sesame breeding programs.

중증 자간전증에서 태아 발육 지연 유무에 따른 모체 혈장 내 TNF - α 농도의 변화

김소라(So Ra Kim),이필량(Pil Ryang Lee),박진우(Jin Woo Park),정복경(Bok Kyung Jung),정지윤(Ji Youn Chung),원혜성(Hye Sung Won),이인식(In Sik Lee),김암(Ahm Kim) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.12

N/A Objectives : The purposes of this study were to evaluate the possible role of Tumor necrotic factor-α(TNF-α) in development of preeclampsia, and to define the alteration of plasma TNF-α concentration in association with fetal growth restriction in preeclamptic women. Methods : Maternal blood samples were retrieved from 10 normal pregnancies, 10 pregnancies complicated with small for gestational age neonate of unknown cause, 10 preeclampsia with fetal growth restriction, and 10 preeclampsia without fetal growth restriction. The concentrations of TNF-α were measured by ELISA. Results : The plasma concentrations of TNF-α were significantly increased in preeclamptic women (p<0.05). However, there were no major differences in relation to fetal growth restriction. In idiopathic SGA group, the cytokine levels were significantly decreased compared to normal pregnancy (p<0.05). Conclusions : The increased concentrations of maternal plasma TNF-α in preeclamptic women suggest that preeclampsia may be an immunologic disorder. Though TNF-α influences on the fetal growth, it may not play a major role in the pathophysiology of fetal growth restriction in preeclampsia.

인도네시아 중부 칼리만탄 쿠알라쿠룬 지역의 지질: I. 층서 및 구조

김인준(In-Joon Kim),기원서(Won-Seo Kee),송교영(Kyo-Young Song),김복철(Bok-Ghul Kim),이사로(Sa-Ro Lee),이규호(Gyoo Ho Lee) 대한자원환경지질학회 2004 자원환경지질 Vol.37 No.5

인도네시아 중부 칼리만탄 쿠알라쿠룬 지역의 지질은 하부로부터 석탄-페름기의 피노변성암류, 백악기 세파욱심성 암류, 에오세말기의 탄중층과 올리고세의 말라산화산암류로 구성되며, 올리고세-마이오세초기의 신탕관입암류가 상기 한 모든 지층들을 관입하고 있다. 퇴적층인 탄중층은 전체적으로 북쪽으로부터 남쪽으로 발달하는 고수류계를 유지하 는 삼각주 환경과 천해 해저 환경에서 퇴적되었다. 고생대 후기의 변성퇴적암류가 퇴적된 이후부터 발생한 4회의 변 형작용이 인지된다. D1 변형작용은 광역변성작용을 수반한 변성암류의 습곡작용 및 S1 편리구조 형성으로 특징 지워 진다. D2 변형작용은 백악기 화강암질암 내에 발생한 연성전단작용이며, D3 변형작용은 북동 내지 동북동 방향의 축 을 갖는 습곡작용 및 이에 수반된 S2 파랑벽개의 형성으로 정의된다. D4 변형작용은 제3기 동안 남-북 방향의 압축 응력하에서 발생한 단층작용으로서, 북동 방향의 좌수향 주향이동단층, 북서 방향의 우수향 주향이동단층, 남-북 내지 북북동 방향의 정단층 등이 형성 되었다. 이 단층작용은 제3기 지층의 퇴적과 분포에 영향을 끼친 것으로 해석된다. The geology of the Kualakulun area in Middle Kalimantan, Indonesia comprises Permian to Carboniferous Pinoh Metamorphic Rocks and Cretaceous Sepauk Plutonics of the Sunda Shield, late Eocene Tanjung Formation, Oligocene Malasan Volcanics, Oligocene to early Miocene Sintang Intrusives and Quaternary alluvium. Tanjung Formation was deposited in low- and high-sinuosity channel networks developed on the proximal to distal delta plain and delta front forming southward paleoflow system, which, in turn, gradually change into shallow marine environment. Four main deformational phases are recognized: D1, folding of metamorphic rocks accompanied by development of S1 schistosity under regional metamorphic condition; D2, ductile shearing in Cretaceous granitoids; D3, folding of metamorphic rocks accompanied by S2 crenulation cleavage; D4, faulting under N-S compressional regime during Tertiary times, producing NE-trending sinistral and NW-trending dextral strike-slip faults and N-S to NNE-trending normal faults.

초음파 기법을 이용한 비파괴 잔류응력 측정 기술 개발

황영인(Young-In Hwang),이효성(Hyosung Lee),김용탁(Yongtak Kim),장재원(Jaewon Jang),김용일(Yong-Il Kim),김기복(Ki-Bok Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

Non-destructive stress measurement techniques using ultrasonic methods are based on the calculation of an acoustoelastic modulus obtainable from the relationship between material stress and sound wave velocity. LCR (Critically Refracted Longitudinal) wave is most suitable for ultrasonic stress measurement because the change in ultrasonic travel time is relatively large with respect to differences in internal stress. In general, in order to calculate the acoustoelastic coefficient, it is necessary to measure the speed difference of ultrasonic waves according to the applied stress by performing tensile or compression tests with specimens extracted from an object. Accordingly, in this study, the acoustoelastic coefficient for the railway rail was calculated by analyzing the result of applying loads to the rail specimen. For this, ultrasonic transducers for stress measurement using LCR waves were designed and manufactured. Therefore, the validity of the residual stress measurement of the rail was verified using the acoustoelastic coefficient of the extracted specimen, and the reliability of the measurement results was confirmed by various methods.

초음파 기법을 이용한 비파괴 잔류응력 측정 기술 개발

황영인(Young-In Hwang),이효성(Hyosung Lee),김용탁(Yongtak Kim),장재원(Jaewon Jang),김용일(Yong-Il Kim),김기복(Ki-Bok Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

Non-destructive stress measurement techniques using ultrasonic methods are based on the calculation of an acoustoelastic modulus obtainable from the relationship between material stress and sound wave velocity. LCR (Critically Refracted Longitudinal) wave is most suitable for ultrasonic stress measurement because the change in ultrasonic travel time is relatively large with respect to differences in internal stress. In general, in order to calculate the acoustoelastic coefficient, it is necessary to measure the speed difference of ultrasonic waves according to the applied stress by performing tensile or compression tests with specimens extracted from an object. Accordingly, in this study, the acoustoelastic coefficient for the railway rail was calculated by analyzing the result of applying loads to the rail specimen. For this, ultrasonic transducers for stress measurement using LCR waves were designed and manufactured. Therefore, the validity of the residual stress measurement of the rail was verified using the acoustoelastic coefficient of the extracted specimen, and the reliability of the measurement results was confirmed by various methods.

들깨 종간 교잡(Perilla citriodora × P. hirtella) 집단의 양적 형질 유전자좌 분석

이명희(Myoung Hee Lee),오기원(Ki Won Oh),김명식(Myung Sik Kim),김성업(Sung Up Kim),김정인(Jung In Kim),오은영(Eun Young Oh),배석복(Suk Bok Pae),여운상(Un Sang Yeo),김태호(Tae Ho Kim),이정희(Jeong Hee Lee),정찬식(Chan Sik Jung),곽도연(Do 한국육종학회 2018 한국육종학회지 Vol.50 No.1

레몬들깨(P. citriodora)와 범꼬리소엽(P. hirtella) 등 2종의 2배체 야생 들깨 종간 교잡을 통해 들깨 유전체 사업의 연관 유전지도 작성에 필요한 집단을 육성하였다. 두 종의 염색체 수는 n=10으로 같고 종간 교잡 후대는 세대를 거치는 동안 정상적인 생육과 결실을 보였다. F2 집단의 표현형은 정규분포를 보여 종간 교잡 식물체의 감수분열 과정에서 두 종의 염색체가 친화성이 높은 것으로 보였다. F2 집단으로부터 수확한 종자에서 Rosmarinic acid, Luteolin, Apigenin등 3종의 성분을 분석한 결과 4배체 재배종 들깨의 함량과 유사한 범위에 분포하였고 Apigenin과 Luteolin 간에 0.762의 높은 정의 상관이 있었다. 주요 농업형질 및 기능성분 분석 결과 21개의 QTL을 찾았다. Apigenin과 Luteolin 간에 높은 정상관이 있었으나 QTL 영역은 다르게 조사되었다. 엽색(LC)의 QTL은 3번 염색체에 하나만 존재하였는데 LOD가 14.3으으로 매우 높고 표현형 변이에 대한 QTL의 설명 비율이 50.4%로 높은 부분 우성 형질이었다. 또한 이 QTL 주변 영역에는 안토시아닌 생합성 조절인자로 알려진 basic helix-loop-helix(bHLH) DNA-binding superfamily protein, myb domain protein 43, Transducin/WD40 repeat-like superfamily protein이 확인되었다. An interspecific cross between P. citriodora and P. hirtella constitutes ideal material for a linkage map construction in genome project of Perilla. The chromosomes of the species are same with n=10 and progenies of the cross are normal in growth and seed set. The phenotype of F2 population of the cross are normally distributed and this is a proof of high affinity of the chromosomes during their sexual reproduction. Rosmarinic acid, Luteolin and Apigenin contents of F2 plants were distributed in similar range with tetraploid perilla cultivars. Luteolin and Apigenin are positively correlated with correlation coefficient of 0.762. 21 QTLs were detected in agronomic traits and Rosmarinic acid, Luteolin and Apigenin contents. Even though Luteolin and Apigenin are positively correlated, QTLs were located in different position. Purple leaf color related QTL was mapped in Chromosome 3 with LOD of 14.3, PVE of 50.4%. Three anthocyanin biosynthesis transcription factor like sequences, WD40 repeat-like superfamily protein, myb domain protein 43 and basic helix-loop-helix (bHLH) DNA-binding superfamily protein, were detected near from the QTL.

다분지 고올레산 다수성 땅콩 신품종 ‘해올’

오은영(Eunyoung Oh),배석복(Suk-Bok Pae),김성업(Sungup Kim),김정인(Jung-In Kim),김민영(Min Young Kim),이정은(Jeongeun Lee),김상우(Sang Woo Kim),조광수(Kwang-Soo Cho),이명희(Myong-Hee Lee) 한국육종학회 2021 한국육종학회지 Vol.53 No.4

‘Hae-Ol’ (Arachis hypogaea ssp. Hypogaea) -a high-oleate peanut variety-was developed at the Department of Southern Area Crop Science,National Institute of Crop Science in 2018. This variety was selected from the pedigree line crossed between short stem Virginia-type ‘HP825’and high-oleate elite line ‘YG316’. The crude fat content of ‘Hae-Ol’ was 50.8%, and its oleic acid composition was 83.0% showing high-oleateproperty compared to that of ‘Daekwang’ variety (57.3%). The ratio of oleic acid to linoleic acid, which represents the oxidative stability, was12 times higher in ‘Hae-Ol’ than in ‘Daekwang’. The increments in acid value and peroxide value were relatively slower in ‘Hae-Ol’, under thecondition of accelerated oxidation. Over the three years of regional adaptation test (2016-2018) conducted at four regions, ‘Hae-Ol’ showed significantlyhigher grain yield (4.88 MT⋅ha-1), which was 16% more improved than that of ‘Daekwang’ (4.20 MT⋅ha-1). The seed of ‘Hae-Ol’ is brownin color and long-ellipse in shape and its 100-seed weight was 96 g. On field, ‘Hae-Ol’ demonstrated more resistance to late leaf spot (Cercosporidiumpersonatum) and web blotch (Phoma arachidicola). It also had a shorter branch and main stem, which was related to the higher tolerance to lodgingstress. The release of ‘Hae-Ol’ could contribute to the production of peanuts with enhanced quality and higher yield, and it is expected to be notablybeneficial to both the producers and manufacturers (Registration No. 8407).

간-신 동시 이식 4예의 치료 경험

한상우 ( Sang Woo Han ),김진영 ( Jin Young Kim ),김수현 ( Su Hyun Kim ),최범순 ( Bum Soon Choi ),양철우 ( Chul Woo Yang ),김용수 ( Yong Soo Kim ),문인성 ( In Sung Moon ),김동구 ( Dong Goo Kim ),고용복 ( Yong Bok Koh ),방병기 ( Byu 대한신장학회 2007 Kidney Research and Clinical Practice Vol.26 No.1

Combined liver-kidney transplantation (LKT) has been increasingly performed procedure for end-stage liver and kidney disease. We experienced four cases of LKT. All patients were affected by viral hepatopathy. There were three patients of hepatocellular carcinoma, treated with trans-arterial chemoembolization or chemotherapy and one cirrhotic patient. The causes of chronic renal failure were polycystic kidney disease in one patient, glomerulonephropathies in two, and diabetes mellitus in one. Three of them were on dialysis treatment. All patients were selected based on blood group identity and negative cross-match before LKT. There was no post-operative surgical complication or acute rejection. At the mean follow-up of 37 months after LKT, all patients showed normal hepatic and renal function except for one case of biopsy-proven tacrolimus nephrotoxicity. Seroconversions of HBsAg, HBeAg, and HBV-DNA were achieved in hepatitis B positive patients. However, HCV-RNA was sustained in hepatitis C positive patient after LKT. Alpha-fetoprotein was normalized in every HCC patient. Combined liver-kidney transplantation can be a proper therapeutic procedure for the patient with liver failure and irreversible renal disease, and it can be done safely and effectively.

광선각화증에 대한 임상 및 병리조직학적 소견 - 대한피부과학회 피부병리연구분과위원회 공동연구 -

장성남,전수일,김수남,조백기,전재복,김낙인,서기석,조광현,김수찬,고재경,김방순,이승철,원영호,김종민 ( Sung Nam Chang,Soo Il Chun,Soo Nam Kim,Baik Kee Cho,Jae Bok Jun,Nack In Kim,Kee Suck Suh,Kwang Hyun Cho,Soo Chan Kim,Jai Kyoung Koh,Bang Soon 대한피부과학회 1997 대한피부과학회지 Vol.35 No.5

Background: Although actinic keratoses is the most common precancerous cutaneous lesion, there has been no clinical and histopathological study about actinic keratoses in Korea. Objective : Our purpose was to carry out a clinical and histopathological study about actinic keratoses in Korea. Methods : 158 patients, diagnosed with actinic keratoses from 1987 to 1995 in Korea, were analyzed clinically and histopathologically. Results 1. The ratio of males to females was 1:2.4 and the most frequent age groups were the 6th(29.1%) and 7th decade(33.5%). 2. The duration of the lesions was more than 1 year in most cases. 3. The most commonly involved sites were the face, in which the cheek, nose and forehead were the most common sites. 4. Clinically, the size of the lesions was less than 1cm in many cases(66.8% ). The color was erythematous in 57.9%, brownish in 26.7%, and dark brownish in 15.3%. Crust and scale were noted in 28.7% and 25.2%, respectively. In 4% of patients, cutaneous horn also was noted. 5. Squamous cell carcinoma was associated with actinic keratoses in 5.7%, basal cell carcinoma in 3.2%, and keratoacanthoma in 1.3%. 6. Histopathologically, hypertrophic types of actinic keratoses were noted in 25.0%, atrophic types in 21.3%, hypertrophic and atrophic types in 18.1%, bowenoid types in 17.6%, acantholytic types in 13.3%, and pigmented types in 4.7%. 7. The most commonly used methods of treatment for actinic keratoses were cryotherapy, surgical excision, 5 FU ointment, and electrodesiccation with good effect. Conclusion : Actinic keratoses in Koreans was present on the face most commonly over 50 years of age. It showed a more frequent incidence in females than males. The clinical course of the lesions was chronic and the association with other cutaneous malignancies was noted to be less than 6%. The various histopathological types were noted, including hypertrophic, atrophic, hypertrophic and atrophic, bowenoid, acantholytic, and pigmented. The most commonly used methods of treatment. for actinic keratoses were cryotherapy, surgical excision, 5-FU ointment, and electrodesiccation. (Korean J Dermatol 1997;35(5): 931-939)