고리 원전 밀림관 노즐의 동종용접과 예방용접 Overlay가 보수용접 잔류응력에 미치는 영향

오창영,송태광,심광보,김지수,김윤재,이경수,Oh, Chang-Young,Song, Tae-Kwang,Shim, Kwang-Bo,Kim, Ji-Soo,Kim, Yun-Jae,Lee, Kyung-Soo 한국전산구조공학회 2009 한국전산구조공학회논문집 Vol.22 No.6

용접과정 중 발생되는 인장잔류응력은 원전 배관 이종용접부의 PWSCC가 발생되는 원인 중 하나라고 알려져 있다. 일반적으로 보수용접은 용접과정 중 흔히 일어나는 현상이다. 보수용접은 강한 인장잔류응력을 유도하기 때문에 이종용접부의 PWSCC를 유도하기 쉽다. 본 논문에서는 강한 인장잔류응력이 발생되는 보수용접부에 대해 보수용접 깊이에 따라 동종용접과 예방용접 overlay로 인하여 인장잔류응력의 크기가 변화하는 것을 정량적으로 확인하였다. Welding residual stress is occurred after welding process. Tensile residual stress is one factor of PWSCC. Repair welding usually happened during the manufacturing welding process. Repair welds cause strong tensile residual stress. In PWR, Repair weldments made by Alloy 82/182 is susceptible to PWSCC caused by tensile stress, material and environment. Therefore, mitigation of welding residual stress in weldments is important for reliable operating. PWOL is one of the methods for mitigation and verified for over twenty years. In this paper, residual stress distribution of repaired weldments and the effect of PWOL on mitigation is examined for surge nozzle.

벵골 호랑이 (Panthera tigris tigris)의 폐(肺)디스토마증(症)

오창영,임창형,Oh, Chang Young,Lim, Chang Hyeong 대한수의학회 1973 大韓獸醫學會誌 Vol.13 No.1

A 16-year-old female Bengal tiger (Panthera tigris tigris) infected with Paragonimus kellicotti was described. Noticeable clinical symptom was not observed before death. At autopsy, numerous cysts were found on the pleural surface of the lung. The cysts were spherical, approximately 1.0 cm in diameter, bulge the pleura, and dark red-brown in color. Such cysts were also found in the deeper lung parenchyma, and usually contained adult flukes in pairs. Histopathologically, the cyst was lined with stratified squamous epithelium which arose from metaplasia of bronchial epithelium. Partial hyperplasia and necrotic foci accompanied with inflammatory cells were often observed in the squamous epithelium. The outer part of the cyst was consisted of fibrous connective tissue in which leukocytes were infiltrated. Catarrhal pneumonia was manifested in the adjacent lung tissues.

${\ll}$교주부인양방(校注婦人良方)${\gg}$에 수재된 의무기록 의안(醫案)에 관한 연구

오창영,김나영,박영수,김병회,조호근,김중오,김동일,Oh, Chang-Young,Kim, Ra-Young,Park, Young-Soo,Kim, Byoung-Hoe,Joh, Ho-Geun,Kim, Joong-Oh,Kim, Dong-Il 대한한방부인과학회 2006 大韓韓方婦人科學會誌 Vol.19 No.2

Background : Medical records are documents in files which consist of all diagnostic studies and medical treatments patients had received while they were hospitalized or treated as outpatients. A doctor or medical team can use medical records as a data for diagnosis, treatment, and education. In traditional eastern asian medicine, medical reports have different forms and contents. The most important thing in medical reports of traditional eastern asian medicine was how to express practitioner's medical ideas. So it has a weak point, for example, it has poor information about patient and clinical process, which make some trouble to understand it. Methods and Results : We studied medical records in Gyojubuin-yangbang, a commentary book of Chen-zi-ming's Obstetrics and Gynecology textbook done by Xue-ji in Ming dynasty, China. This book consists of 10 parts; treatment of menstruation disorders and leukorrhea, general gynecology, treatment of infertility, education for fetus, diagnosis of fetus and gravida, treatment of general and obstetrical disease in gravida, care for delivery, postpartum care and treatment, and treatment of mass and inflammation. It has 546 medical records about women's disease that commonly believed as Xue-ji's case reports. They are all review articles and made during about 23 years from A.D 1523 to 1546. Most patients of Xue-ji's case reports were common people, this fact is different from that of case reports in Chen-zi-ming's Obstetrics and Gynecology textbook. Conclusion : Xue-ji was a very famous Ob&Gy doctor who was from Suzhou Jingsu province in China. He was born in A.D 1468, died in A.D 1588. He emphasize emotional factors in pathology and to tonify spleen and kidney. We think Xue-ji's medical records are good references for us to treat psychosomatic Ob&Gy disease and chronic women's disease.

California Sea Lion(Zalophus californianus)의 기생충성폐염(寄生蟲性肺炎)

오창영,임창형,Oh, Chang Young,Lim, Chang Hyeong 대한수의학회 1972 大韓獸醫學會誌 Vol.12 No.2

Verminous pneumonia due to Parafilaraoides decorus infection is described in a California sea lion (Zaophus californianus). Multiple nodules measuring 1~7mm in diameter occurred throughout the lung. Histologically, lung worms were located in the bronchiolar lumens and alveolar spaces in which numerous inflammatory reactions were induced.

네 마리의 물도마뱀(Varanus salvator)에 있어서 확역성간괴사(擴域性肝壞死)를 동반한 궤양성직장염(潰瘍性直腸炎)

오창영,Oh, Chang Young 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.1

Four water monitors at Zoological Garden, Chang Gyeong Won, Seoul, died within a week after signs of anorexia, lethargy, and discharge from eyes, nasal and oral cavities. The autopsy findings of the four animals were similar. As a main lesion, the liver was congested and diffuse necrosis was observed. The terminal portions of the rectum were studded with numerous small ulcers causing rectal stenosis. Histopathologically, massive hepatic necrosis preceded by fatty changes were evident. The rectal lesions manifested coagulative necrosis and thrombosis in the mucosa and submucosa.

CO₂ 농도 및 기온 상승에 대한 현사시나무의 광합성 반응

이솔지,오창영,한심희,김기우,김판기,Lee, Solji,Oh, Chang-Young,Han, Sim-Hee,Kim, Ki Woo,Kim, Pan-Gi 한국농림기상학회 2014 한국농림기상학회지 Vol.16 No.1

지구온난화와 같은 기후변화에 적응력이 높은 조림수종을 탐색하는 연구의 일환으로 $CO_2$농도 및 기온상승이 현사시나무의 광합성생리에 미치는 영향을 조사하였다. 그 결과 현사시나무는 $CO_2$농도 및 기온 상승에 의해서 줄기의 신장생장이 억제되고 광합성 능력이 저하되었다. 그리고 광합성능력과 관련된 색소(엽록소a, b, 카로티노이드)의 함량이 감소하였다. 특히 탄소고정계의 활성과 관련된 엽록소a의 감소가 현저하게 나타났다. 그리고 광-광합성곡선과 A-Ci곡선에서 광화학계의 활성을 나타내는 순양자수율이 7%, 전자전달속도가 14% 감소하고, 탄소고정계의 활성을 나타내는 탄소고정효율이 52%, 재인산화속도가 24% 감소하였다. 이러한 결과로 $CO_2$농도 및 기온 상승에 의한 현사시나무의 광합성능력 저하는 광화학계 및 탄소고정계의 활성저하에 기인하나, 탄소고정계의 활성저하가 더 크게 작용하였음을 알 수 있다. This study was conducted to investigate the photosynthetic characters of Populus alba${\times}$glandulosa cuttings in response to elevated $CO_2$ concentration and air temperature for selecting tree species adaptive to climate change. The cuttings were grown in environment controlled growth chambers with two combinations of $CO_2$ concentration and air temperature conditions: (i) $22^{\circ}C$ + $CO_2$ 380 ${\mu}mol$ $mol^{-1}$ (control) and (ii) $27^{\circ}C$ + $CO_2$ 770 ${\mu}mol$ $mol^{-1}$ (elevated) for almost three months. The cuttings under the elevated treatment showed reduced tree height and photosynthetic pigment contents such as chlorophyll and carotenoid. In particular, the elevated treatment resulted in a marked reduction in the chlorophyll a closely associated with $CO_2$ fixative reaction system. Different levels of reduction in photosynthetic characters were found under the elevated treatment. A decrease was noted in photochemical reaction system parameters: net apparent quantum yield (7%) and photosynthetic electron transport rate (14%). Moreover, a significant reduction was obvious in $CO_2$ fixative reaction system parameters: carboxylation efficiency (52%) and ribulose-1,5-bisphosphate(RuBP) regeneration rate (24%). These results suggest that the low level of photosynthetic capacity may be attributed to the decreased $CO_2$ fixative reaction system rather than photochemical reaction system.

CO2 농도 및 기온 상승에 대한 현사시나무의 광합성 반응

이솔지 ( So Lji Lee ),오창영 ( Chang Young Oh ),한심희 ( Sim Hee Han ),김기우 ( Ki Woo Kim ),김판기 ( Pan Gi Kim ) 한국농림기상학회 2014 한국농림기상학회지 Vol.16 No.1

지구온난화와 같은 기후변화에 적응력이 높은 조림수종을 탐색하는 연구의 일환으로 CO2농도 및 기온 상승이 현사시나무의 광합성생리에 미치는 영향을 조사하였다. 그 결과 현사시나무는 CO2농도 및 기온 상승에 의해서 줄기의 신장생장이 억제되고 광합성 능력이 저하되었다. 그리고 광합성능력과 관련된 색소(엽록소a, b, 카로티노이드)의 함량이 감소하였다. 특히 탄소고정계의 활성과 관련된 엽록소a의 감소가 현저하게 나타났다. 그리고 광-광합성곡선과 A-Ci곡선에서 광화학계의 활성을 나타내는 순양자수율이 7%, 전자전달속도가 14% 감소하고, 탄소고정계의 활성을 나타내는 탄소고정효율이 52%, 재인산화속도가 24% 감소하였다. 이러한 결과로 CO2농도 및 기온 상승에 의한 현사시나무의 광합성능력 저하는 광화학계 및 탄소고정계의 활성저하에 기인하나, 탄소고정계의 활성저하가더 크게 작용하였음을 알 수 있다. This study was conducted to investigate the photosynthetic characters of Populus alba×glandulosa cuttings in response to elevated CO2 concentration and air temperature for selecting tree species adaptive to climate change. The cuttings were grown in environment controlled growth chambers with two combinations of CO2 concentration and air temperature conditions: (1) 22℃ + CO2 380 μmol mol.1 (control) and (2) 27℃ + CO2 770 μmol mol.1 (elevated) for almost three months. The cuttings under the elevated treatment showed reduced tree height and photosynthetic pigment contents such as chlorophyll and carotenoid. In particular, the elevated treatment resulted in a marked reduction in the chlorophyll a closely associated with CO2 fixative reaction system. Different levels of reduction in photosynthetic characters were found under the elevated treatment. A decrease was noted in photochemical reaction system parameters: net apparent quantum yield (7%) and photosynthetic electron transport rate (14%). Moreover, a significant reduction was obvious in CO2 fixative reaction system parameters: carboxylation efficiency (52%) and ribulose-1,5-bisphosphate(RuBP) regeneration rate (24%). These results suggest that the low level of photosynthetic capacity may be attributed to the decreased CO2 fixative reaction system rather than photochemical reaction system.

이산화탄소 농도 및 온도 상승에 따른 소나무와 상수리나무의 생리생태적 반응

서동진 ( Dong Jin Seo ),오창영 ( Chang Young Oh ),김기우 ( Ki Woo Kim ),한심희 ( Jae Cheon Lee ),이재천 ( Sim Hee Han ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-

온실가스 증가에 의한 기온 상승 등 미래 환경에 적응력이 높은 수종을 육성하기 위하여, 이산화탄소 농도 및 온도 상승에 따른 소나무와 상수리나무의 생리생태적 반응을 알아보고자 본 연구를 수행하였다. 실험은 지름 10m, 높이 7m 크기의 원형 상부개방형 온실을 이용하다. 실험구는 이산화탄소 처리 농도에 따라 외부(대조구), 대기 농도의 1.0배, 1.4배, 1.8배로 배치하였다. 또한, 생육 온도 상승은 온실효과에 의하여 부가적으로 나타났으며, 외부 대비 상부개방형 온실은 2℃ 가량 높게 나타났다. 개엽 시기를 조사한 결과, 온도 상승에 의하여 소나무는 6일, 상수리나무의 경우 11일 대조구에 비하여 빨리 나타났다. 또한, 이산화탄소 농도가 증가함에 따라서 그 시기가 더 빠르게 나타나 1.8배 처리구에서 대조구에 비하여 소나무 14일, 상수리나무 12일 빠르게 나타났다. 낙엽 시기의 경우에는 온도 및 이산화탄소농도 상승에 따라 늦어진 것으로 나타났다. 온도 상승에 의한 광합성 활성은 두 수종 모두 증가하였지만, 이산화탄소 농도가 증가함에 따라서 수종간 차이가 나타났다. 소나무의 경우 이산화탄소 농도가 증가한 상황에서도 대조구에 비하여 높은 활성을 나타냈다. 하지만 상수리나무의 경우에는 이산화탄소 농도가 증가함에 따라서 광합성 활성과 탄소고정효율이 감소한 것으로 나타났다. 엽록체 내 전분 축적 변화를 조사한 결과, 소나무의 경우에는 대조구와 처리구간 뚜렷한 차이가 나타나지 않았지만 상수리나무의 경우 이산화탄소 농도 증가에 따라서 축적되는 전분의 양이 증가하는 것으로 나타났다. This study was conducted to investigate the ecophysiological characters of Pinus densiflora and Quercus acutissima in response to elevated CO2 concentration and air temperature for breeding tree species adaptive to climate change. Experiment was conducted in open-top chamber(OTC, W10m×H7m), and CO2 treatment concentrations were set as outside(control) and outside concentration ×1.0, ×1.4, ×1.8. Air temperature was elevated by green house effect, about 2℃ in OTC. Leaf unfolding was advanced by air temperature increasing for 6 days in P. densiflora, for 11 days in Q. acutissima. As CO2 concentration increased, leaf unfolding was advanced for 14 days in P. densiflora, 12 days in Q. acutissima in ×1.8 treatment OTC. Photosynthetic activity was increased by increased air temperature for both species, but it was differed by CO2 concentration increase. P. densiflora showed higher photosynthetic activity under higher CO2 concentration treatment, but Q. acutissima responded as decreasing in photosynthetic activity and carbon fixation efficiency as increasing of CO2 concentration. There were no differences in starch accumulation in chloroplast for control and all CO2 treatments in P. densiflora. On the other hand starch accumulation in Q. acutissima was more increased as CO2 concentration increased.

CO2 농도 및 기온 상승이 현사시나무의 수분생리 특성에 미치는 영향

이솔지 ( Sol Ji Lee ),한심희 ( Sim Hee Han ),오창영 ( Chang Young Oh ),김기우 ( Ki Woo Kim ),김판기 ( Pan Gi Kim ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-

기후변화에 적응력이 높은 조림수종을 탐색하기 위하여 CO2 농도 및 기온 상승이 현사시나무의 수분생리에 미치는 영향을 조사하였다. 현사시나무는 CO2 농도 및 기온이 상승된 조건에서 엽량 및 엽면적이 감소하였고, 섬모의 엽면 피복도가 현격하게 증가하였다. 또한, 기공전도도 및 증산속도는 낮은 값을 유지하였으며, 광도 및 CO2 농도 상승에 따른 변화가 거의 나타나지 않았다. 이로써 처리구의 수분이용효율 및 상태함수율은 대조구에 비해 높은 값을 가질 수 있었다. 이러한 결과로부터 CO2 농도 및 기온 상승된 조건에서 현사시나무는 엽면경계층과 기공저항의 증가로 수분손실을 억제하는 능력이 뛰어남을 알 수 있었다. 현사시나무는 수분스트레스에 대한 높은 가소성과 조직의 형태를 변화시키는 기작으로 기후변화 환경에 적응하고 있는 것으로 사료된다. This study was conducted to investigate the water physiology characters of Populus alba× glandulosa cuttings in response to elevated CO2 concentration and air temperature for selecting tree species adaptive to climate change. The poplars under the elevated treatment showed a decrease in the leaf number and area, compared with those under the ambient condition. Having denser leaf hairs, the poplars under the treatment maintained lower stomatal conductance and slower transpiration rate. These results indicate that increased leaf boundary layer and stomatal resistance of poplars under elevated treatment allowed higher water use efficiency and water retentivity. The phenotypic plasticity of leaves in response to water stress would probably enable the poplars to cope with possible climate change conditions.

프로스타글란딘 유도체의 합성과 그의 생물학적 활성에 관한 연구 2. 위궤양과 위산분비에 대한 프로스타글란딘 유도체의 효과

조태순(Tai Soon Cho),이선미(Sun Mee Lee),함원훈(Won Hun Ham),이병무(Byung Mu Lee),김경례(Kyoung Rae Kim),지상철(Sang Cheol Chi),고준일(Jun Ill Ko),박인(In Park),오창영(Chang Young Oh),박호군(Ho Koon Park),김형자(Hyoung Ja Kim),이향우(H 한국응용약물학회 1995 Biomolecules & Therapeutics(구 응용약물학회지) Vol.3 No.1

The antiulcer effects of newly synthesized prostaglandin derivatives were investigated in various experimental ulcer models and on gastric secretion in rats. HK-3 and HK-4, PGE₂ derivatives, prevented the formation of acute gastric ulcer induced by ethanol or aspirin in pylorus-ligated rats. The ulcer formation was moderately inhibited by HK-1 and HK-2, PGF_(2α) derivatives, and aggravated by SK-1, SK-2 and SK-3, PGF_(2α) derivatives. HK-3 and HK-4 reduced the volume, acid output and pepsin output of gastric juice in pylorus-ligated rats. The gastric perfusion with physiologic saline(pH 6.0) showed relatively constant acid secretion and indomethacin increased the acid secretion. The acid secretion was markedly decreased by PGE₂ but PGF_(2α) caused little change. Prostaglandin derivatives, especially HK-3 and HK-4, significantly inhibited the acid secretion induced by indomethacin. The results show that, PGE₂ derivatives, HK-3 and HK-4, inhibit acid secretion and also have protective effects on gastric ulceration induced by ethanol or aspirin.