담배(Nicotiana tabacum L.)葉中 非揮發性有機酸 및 脂肪酸含量에 關한 硏究

鄭基宅 충북대학교 엽연초연구소 1986 煙草硏究 Vol.12 No.-

This study was conducted to investigate the influence of some factors, i.e. type, variety stalk position, leaf part, physiological maturity and topping, on the contents of nonvolatile organic and higher fatty acid, and to analyze the correlation among acids of tobacco leaves. The results obtained are summarized as follows; 1.Total analyzed acid (TAA) and total nonvolatile organic acid(TNOA) contents of burley tobacco leaf were higher than those of flue-cured tabacco at early flowering stage, while total higher fatty acid(THFA) content showed little differences between the types of tabacco. the predomina nonvolatile organic acid was malic acid in flue-cured tobacco, but citric acid in burley tobacco. 2.TNOA and malic acid contents were decreased with ascending stalk position, while THFA, linolen acid, linoleic acid and oleic acid contents were increased. 3.TAA and oxalic acid contents of lamina were lowest in the middle among three leaf parts. There was little difference between the TAA content of midrib and lamina, but THFA, palmitic acid, oleic acid, linoleic acid and linolenic acid contents of lamina were much higher than those of midrib. Malic acid content of midrib was higher than that of limina. Proportion of malic acid to TAA content in midrib were 85.1% in NC 2326 and 67.9% in Burley 21. 4.TAA, TNOA and THFA showed maximum contents at early flowering stage, and thereafter, those contents were gradually reduced, and the reduced rate of THFA content was greater than that of TNOA content. After the late flowering stage linolenic acid content was markedly decreased, but linoleic acid content was increased. 5.TAA, THFA and linolenic acid contents were highest at the early flowering stage, but TNOA and malic acid contents at harvesting time over all stalk positions. 6.The lower the topping height was, the lower the TAA, TNOA, THFA, malic acid, stearic acid, and linoleic acid contents in middle and upper leaves were. 7.TNOA content showed positive correlations with malic acid content in NC 2326, and with malic acid and citric acid contents in Burley 21, respectively. 8.There were positive correlations among oleic acid, linoleic acid, linolenic acid and THFA contents. Palmitic acid content showed positive correlations with oleic acid, linolenic acid, and THFA contents.

유전치의 전장피개수복 : 증례보고

홍기상,이상훈,장기택 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.2

치아우식증, 외상, 발육성 결함으로 광범위한 수복이 필요한 유전치의 치료는 소아치과의사에게 있어서 매우 까다로운 문제이다. 이상적인 수복수술은 강도, 내구성, 심미성과 장착의 효율성을 모두 갖추어야 한다. 이에 행동조절문제가 있는 어린이를 치료하는 기술적 문제를 더하면, 여러 가능한 수복 방법 중에서 적절한 술식을 선택하는 것은 어려운 일이다. 현재 사용되는 수복술식에는 복합레진의 접착을 사용한 celluloid strip crown, conventional stainless steel crown, open-faced stainless steel crown, commercially 및 chairside veneered stainless steel crown과 epoxy-coated stainless steel crown 등이 있다. 이 모든 술식이 나름대로의 기술적, 기능적 또는 심미적 단점을 갖고 있어 각각의 효율적이고 효과적인 사용을 위해서는 적절한 선택이 중요하다. 이에 저자는 이러한 여러 가지의 전장피개수복 방법을 사용해 유전치를 치료하여 그 결과를 보고하는바이다. Primary anterior teeth requiring extensive restorative therapy due to caries, trauma or developmental defects can present a particularly challenging problem for the pediatric dentist. The ideal restorative technique would combine strength, durability, esthetics and efficiency in placement. Couple these concerns with the technical difficulties of operating on children with behavior management problems, and the dentist is left with the difficult tack of choosing from a variety of restorative options. Restorative modalities currently in use to treat primary anterior teeth include bonding with composite resin as in celluloid strip crowns, conventional stainless steel crowns, open-faced stainless steel crowns, commercially and chairside veneered stainless steel crowns and epoxy-coated stainless steel crowns. Each of these techniques presents technical, functional or esthetic compromises that complicate their efficient and effective usage. This is a report of the results obtained at the Department of Pediatric Dentistry. College of Dentistry, Seoul National University, through the use of these various methods of treating primary anterior teeth.

근위 대퇴정을 이용한 대퇴 전자부 골절의 치료

문영완,서동현,강신택,권덕주,지용남,이기병 대한골절학회 2003 대한골절학회지 Vol.16 No.1

목 적 : 근위 대퇴정을 이용한 고령 환자의 대퇴전자간 골절의 치료결과에 대해 보고하고자 한다. 대상 및 방법 : 2001년 4월부터 2002년 2월까지 대전자부에서 소전자에 이르는 횡선골절 및 소전자 주위 분쇄골절로 압박고 나사 고정이 용이하지 않은 전자간 골절, 일반적인 전자간 골절에 대해 근위 대퇴정을 사용해 치료한 80례 중 추시가 가능했던 71례를 대상으로 하였으며, 추시과정 중 골유합 시기, 대퇴경간각, 지연나사의 활강, 수술시간 및 출혈량, 술중 및 술후 합병증 수술시 주의사항을 조사하였다. 결 과 : 평균연령은 77.5세, 평균추시기간은 9개월이었다. Evans의 분류법으로 골절을 분류하여 안정성, 불안정성 골절은 30례, 41례였다. 평균 골 유합 시비는 13.8주였고, 대퇴경간각은 수술직후 131.9 ± 5.21˚, 129.9 ± 6.04˚ 였으며 평균지연나사의 활강은 4.21±4.13㎜였다. 수술시간은 평균 61분, 출혈량은 평균 0.67pint(134cc)였다. 술중 합병증으로는 정복 실패 1례, 원위고정나사 삽입시 피질골 골절 1례, drill bit 파손 1례가 있었으며, 술후 합병증으로는 대퇴 경간각 소실(5도이상) 12례, 경부골절의 발생이 2례, 지연나사의 관절내 돌출 1례였다. 결 론 : 대퇴골 전자부 골절의 치료로 근위 대퇴정은 정확한 삽입 위치, 삽입시의 조심스러운 확공, 지연나사의 연골하 골에 단단하게 고정시키는 등의 주의를 한다면 수술시간, 출혈량 감소 등의 술중 합병증을 줄이고, 견고한 내고정을 통한 조기 보행을 가능하게 하며, 좋은 골유합 등이 기대되므로, 특히 고령, 분쇄골절, 역행성 골절, 골다공증이 심한 경우에서 바람직한 수술방법으로 사료된다. Purpose : To evaluate the treatment results of geriatric intertochanteric fractures using a proximal femoral nail. Materials and Methods : From April 2001 to February 2002, 71 cases of the intertrochanteric fractures involving lesser trochanter, transverse or reverse oblique intertrochanteric fracture. We evaluated the bone union time, neck-shaft angle, lag screw sliding by follow up radiographs, operation time, blood loss and complications. Results : The average age was 77.5 years old, the mean duration of follow-up was 9 months and the mean duration of bone union was 13.8 weeks. The average neck-shaft angle on immediate postop. x-ray was 131.9 ± 5.21˚ and 129.9 ± 6.04˚ at last follow up and the average lag screw sliding was 4.21 ± 4.13㎜. The average operation time was 61 minutes and blood loss was 0.67 pints(134cc). Intraoperative complications were inadequate reduction in one case, difficulty in distal transfixing in one case and drill bit failure in one case and postoperative complications were loss of neck-shaft angle(more than 5 degree) in 12 cases, femur neck fracture in 2 cases and intraarticular cutting out of femur neck screw in one case. Conclusions : The use of the proximal femoral nail could be appropriate for the fixation of communited or reverse oblique intertrochanteric fracture in elderly, osteroporotic patients for early ambulation, preventing shortening and rotation deformity, and reducing operation time and blood loss.

Ultraviolet Radiation-Exposed Animals Exhibit An Enhanced Susceptibility to Bacterial and Fungal Infections

Huh, Kee-Seok,Chung, Yun-Shin,Chung, Hun-Taeg 圓光大學校 醫科學硏究所 1987 圓光醫科學 Vol.3 No.2

자외선 (280 ㎚∼320 ㎚)은 개체의 면역계에 많은 영향을 미치는 물리적 요인의 하나이다. 그러므로 자외선이 개체의 면역반응에 미치는 영향에 관하여는 현재 많은 연구가 활발하게 진행되고 있다. 그러나 이러한 자외선의 조사가 여러가지 미생물에 대한 개체의 저항성에 미치는 영향에 관해서는 잘 알려져 있지 않다. 따라서 본 연구에서는 이러한 자외선의 조사가 마우스에 있어서 여러가지 미생물에 대한 저항성에 미치는 영향을 관찰하였다. 자외선의 조사가 마우스의 감염에 대한 저항에 미치는 영향은 마우스를 진균의 하나인 Candida al-bicans, 그람음성세균의 하나인 Esche-richia coli 혹은 그람양성세균의 하나인 Staphylococcus aurdus로 감염시켰다. 감염 24시간 후 각 장기로부터의 미생물을 배양하고 집락수를 측정하였다. 마우스에 각 미생물을 접종하기전에 자외선을 조사한 실험군에서의 미생물검출은 대조군에 비하여 높았으며 특히 자외선조사 후 3日째에 세 가지 균주 모두 검출율은 높았고 장기별 검출율에 있어서는 비장에서 자외선조사 3日후에 가장 높았다. 더 나아가서 자외선조사가 세포성면역반응에 주로 관여하는 항산성 세균에 대한 저항에 미치는 영향을 알아보기 위해서 동종의 마우스에 Bacillus Calmette Guerin(BCG)으로 면역 시킨 후 자외선을 조사시킨 다음 purified protein Derivative(PPD)로 피부반응 검사 결과 조기 피부반응(4hr)은 정상과 유사하거나 약간 낮았으나 지연성 과민반응(48hr)은 현저한 감소를 보였다. 날짜별 실험결과 자외선 조사후 0 ∼ 5일중 3日째에 지연성 과민반응(delayed type hypersensitivity)이 현저하게 감소됨을 관찰하였다. 이러한 현상은 자외선이 개체의 면역반응 조절자로서 작용하여 마우스의 저항성을 감소시킨 결과로 사료된다. 이러한 개체의 저항성 감소는 자외선의 조사가 임파구의 재순환 양상을 변화시키고, 억제T세포(Suppre-ssor T cell)을 유도, 항원 전달세포(An-tigen Presenting Cell)의 이탈, inter-leukin 1 같은 분자의 생산, Langerhans세포 기능의 불활성화 등을 야기한 것 같다. 특히 자외선조사 후 3日째에 억제 T세포의 활성화에 최대 효과를 준 것으로 사료된다. UVB(280-320㎚) is an environmental agent that is a large number of changes of the skin of human and animals. Now, Numerous studies on the mechanisms affecting the immune response have been researching. But, it was not known that UVR corelated with microbial infection. Therefore, in these study, we researched to measure of recovery of various microorganism from UV-irradiated mice that were pathogenic microorganisms. The results of this study showed that recovery of various pathogenic microorganisms in UVR-exposed mice was higher than that of in normal (non-UV irradiated) control mice. Recovery of Candida albicans, Esche-richia coli and Staphylococcus aureus in 3 day after UV-irradiation was highest in 0-5 day after UV irradiation. Futher more, we studied that UVR corelated with cellular immune response. It was challenged to syn-genic mice with Bacillus Calmete Guerin(BCG) and UVR was treated to the BCG-injected mice. Footpad swelling reactions were tested with purified protein derivative (PPD) in 0-5 day after UV-irradiation. The results of these experiments exhibit that early skin reaction (4 hr after PPD treatment) is similar or reduced a little. But, delayed type hype-rsensitivity (48 hr after PPD treatment) was highly reduced as compared to the control. These results suggest that UVR induce a potent immun-omodulation such as an altered pattern of lymphocyte recirculation, suppressor T cell induction, deviation in systemic antigen presenting cell (APC) potential, changes in the production of interleukin 1 - like molecule, and the function inactivation of epidermal Langerhans cells in the process.

거문도 해역 대롱수염새우(Solenocera melantho)의 성장과 성 성숙

오택윤 ( Taeg Yun Oh ),최정화 ( Jung Hwa Choi ),차형기 ( Hyung Kee Cha ),김주일 ( Joo Il Kim ),김대현 ( Dea Hyun Kim ),이주희 ( Ju Hee Lee ) 한국수산과학회 2005 한국수산과학회지 Vol.38 No.4

Development of long-term irradiation testing technology at HANARO

Choo, Kee Nam,Yang, Seong Woo,Park, Seng Jae,Shin, Yoon Taeg Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.1

As the High Flux Advanced Neutron Application Reactor (HANARO) has been recently required to support new R&D relevant to future nuclear systems requiring a much higher neutron fluence, the development of irradiation capsule technology for long-term irradiation testing was performed in three steps (3, 5, 10 dpa). At first, several design improvements of a standard capsule were suggested based on a failure analysis of the capsule and successfully applied for irradiation testing at HANARO at up to eight reactor operation cycles equivalent to 3 dpa. Based on a schematic stress analysis of the vulnerable parts of the previous capsule, an optimized design of the capsule was made for 5 dpa irradiation. The newly designed capsule was safely out-pile tested up to 450 days, which was equivalent to 5 dpa irradiation in the reactor. The test results were submitted to the Reactor Safety Review Committee of HANARO and irradiation testing for 5 dpa was approved. The capsule was also successfully out-pile tested to evaluate the possibility of irradiation testing for 10 dpa. For a higher neutron fluence exceeding 10 dpa, new capsule technologies, including a new capsule that has a different bottom design and neutron flux boosting capsule, were also suggested.

근해오징어채낚기어업에서 어로기술발달에 따른 어획성능지수 변동

오택윤 ( Taeg-yun Oh ),서영일 ( Young-il Seo ),차형기 ( Hyung-kee Cha ),조현수 ( Hyun-su Jo ),안영수 ( Young-su An ),이유원 ( Yoo-won Lee ) 한국수산해양기술학회(구 한국어업기술학회) 2018 수산해양기술연구 Vol.54 No.3

Squid is one of the important fisheries resources in Korea. Therefore, squid has been designated and managed as a target species of total allowable catch (TAC) since 2007, but the catch amount is gradually decreasing. The analysis was conducted to identify the change of relative fishing power index to develop the vessel and gear technology that may have improved the fishing efficiency of the offshore squid jigging fishery from 1960s to 2010s. Gross tonnage per fishing vessel increased with the increase in size until 1990, but then gradually decreased to 41.0 tons in 2000 and 37.1 tons in 2010. The illuminating power (energy consumption) by fishing lamps increased to 180 kW in 2005 and stabilized to 120 kW in 2015. Jigging machine started to be supplied to fishing vessels from the early 1970s, and fish finders began to be supplied in the early 1980s and gradually increased. Therefore, the relative fishing power index in the offshore squid jigging fishery increased from 1.0 in 1980 to 1.1 in 1990, to 3.5 in 2000 and to 2.5 in 2010, but the increment rate slowed down gradually. The results are expected to contribute to reasonable fisheries stock management.

근해 붉은대게 통발어업에서 어로기술개발에 따른 어획성능지수 변화

오택윤(Taeg-Yun OH),서영일(Young-Il SEO),황강석(Kang-Seok HWANG),차형기(Hyung-Kee CHA),조현수(Hyun-Su JO),황보규(Bo-Kyu HWANG),김병엽(Byung-Yeob KIM),김석재(Seok-Jae KIM),이유원(Yoo-Won LEE) 한국수산해양교육학회 2017 水産海洋敎育硏究 Vol.29 No.5

한국 거문도 인근해역의 민새우, Parapenaeopsis tenella의 개체군 동태

오택윤 ( Taeg Yun Oh ),차형기 ( Hyung Kee Cha ),최정화 ( Jung Hwa Choi ) 한국어업기술학회 2004 수산해양기술연구 Vol.40 No.1

한국 거문도 인근해역의 꽃새우, Trachysalambria curvirostris의 성숙과 성장

오택윤 ( Taeg Yun Oh ),최정화 ( Jung Hwa Choi ),차형기 ( Hyung Kee Cha ),김주일 ( Joo Il Kim ),고정락 ( Jeong Lag Koh ),이주희 ( Ju Hee Lee ) 한국어업기술학회 2003 수산해양기술연구 Vol.39 No.2