증기발생기 세관에서 결함 선단 변화에 따른 와전류 결함신호의 분석

송성진,김의래,김창환,김영환 성균관대학교 기계기술연구소 2001 성균관대학교 논문집 기계기술편 Vol.4 No.1

Eddy current signals from flaws with tip variation in steam generator tubes were analyzed. Using finite element models, abundant flaw signals from two dimensional axisymmetric flaws will tip variation were generated. Features of ECT signal were defined and extracted, and sensitive features for flaw classification and sifting were selected. Two neural networks were employed for flaw characterization and sizing. The intercept vector was introduced as a new feature, and its usefulness was discussed.

뇌동맥류의 진단에 대한 전산화단층촬영 뇌혈관조영술과 고식적 뇌혈관조영술의 비교

송상현,윤수한,안영환,안영민,조기홍,조경기,김선용,서정호 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

Cerebral angiography has been essential for the diagnosis of the intracranial aneurysms but. is sometimes accompanied by serious complications. Resolution of CT angiography was up-graded greatly to represent the three-demensional structure of vesseles since helical CT had been introduced. We have compared 26 cases of CT angiography and 28 cases of conventional angiography in terms of specificity and sensitivity for the diagnosis detectable aneurysm diameter. configurational diagnosis and diagnostic confidency. All results showed no statistical difference between CT angiography and conventional angiography. These should suggest that CT angiography could be replaced with conventional angiography for the diagnosis of ruptured aneurysms and even of unruptured aneurysms. resulting in the introduction of first screening modality of unruptured aneurysms.

유방의 관상피내암종에서의 p27_kip1, Cyclin D1 및 p53 단백의 발현

오영륜,송상용,최종순,고영혜,이회정,안긍환 대한병리학회 1999 Journal of Pathology and Translational Medicine Vol.33 No.9

긴장증의 임상적 특성에 대한 고찰

송지영,윤도준,변재영,장환일 大韓神經精神醫學會 1989 신경정신의학 Vol.28 No.3

26 cases(9 males and 17 females) with catatonia features on admission were analyzed in terms of its clinical characteristics. The results obtained were as follows : 1) In the diagnostic distribution, more than a half of the cases were schizophrenic disorders(57.5%) and the others were major depressions(26.9%) and schizophreniform disorders(15.4%). 2) The catatonia signs were nonspecific and evenly distributed among a variety of clinical diagnostic entities. But the signs of negativism, mutism, and posturing appeared frequently in all cases. 3) Acute onset was prevalent(65.4%), ECT was more frequently applied(61.5%) and treatment response was better(70.9%) in the catatonia group than non-catatonia. Although the definition of catatonia is not clear yet, above results support the opinions of previous studies that catatonia should be understood as a heterogenous symptom complex. And not only schizophrenia but also affective disorder are associated with catatonia features. This suggests that we have to re-evaluate the concept of Kahlbaum's old description.

류마치스성 제1-2경추 아탈구 : 증례보고 Report of A Case

송상현,윤수한,조기홍,안영환,안영민,조경기 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

Authors report a case of one-stage transoral decompression and posterior fusion in rheumatoid atlantoaxial subluxation. A 63-year-old man developed a rheumatiod atlantoaxial subluxation with mild weakness of all extremities which developed relatively suddenly 3 months after the initial symptom of neck pain. Skeletal traction followed by transoral decompression and occipitocervical fusion was performed on the same day. Postoperative course has been uneventful and revealed favorable fusion state of occipito-atlanto-axis. The pertinent literature on theumatoid atlanto-axial subluxation is reviewed and discussed.

옥수수·鷄糞 silage 製造時 formic, propionic acid 添加가 品質에 미치는 影響

宋瑛敏,金斗煥 진주산업대학교 농업기술연구소 1992 農業技術硏究所報 Vol.5 No.-

옥수수 silage의 영양가치 증진과 계분의 효율적이 처리방안으로 옥수수-계분 silage 제조시 formic acid 및 propionic acid첨가가 발효품질에 미치는 영향을 조사한 결과는 다음과 같다. 1. 재료의 성분중 옥수수에 많은 것은 조섬유, NFE, NDF, ADF였으며, 육계분에는 조단백질, 회분이 많이 함유되어 있었다. 2. Formic acid, propionic acid첨가로 옥수수-계분 silage의 화학적 조성에는 큰 변화가 없었다. 3. Propionic acid첨가구가 총질소함량에 대한 암모니아질소함량의 비율이 가장 낮아 품질이 우수한 것으로 나타났다. 4. Propionic acid첨가구가 pH가는 가장 낮았고, Total acid함량은 가장 많았으나, Flieg's평점은 산처리 하지 않은 옥수수-계분 silage보다 낮았다. 5. 총생균수, 유산균수 및 대장균수로 볼 때 formic acid나 propionic acid첨가로 다소 발효억제효과를 찾을수 있으나 뚜렷하지는 않았다. This experiment conducted to determine the effects of formic and propionic acid on the quality of the corn-manured silage. Admixing corn forage with broiler manure at 30% rate(DM basis)and formic or propionic acid was added at ensiling time at 0.5%, 0.75% rate(wet basis) respectively. Chemical composition, fermentation acids, pH, microbial population and distribution of the nitrogen contents were evaluated. The results obtained are summarized as follows; 1. Nutrients such as crude protein, crude ash were supplied from the broiler manure while crude fiber, NFE, NDF and ADF were supplied from the whole crop corn. 2. By adding the formic and propionic acid in the corn-manured silage, there was no marked difference in the general chemical compositions. 3. Production of ammonia nitrogen was the lowest in the propionic acid adding corn manured silage. 4. The pH value of the silage with propionic acid was the lowest, however total acid content was the highest. 5. Both total bacteria numbers and lactic acid bacteria being estimated as 10^6-10^7per g silage, were not significantly different among treatments.

전반적발달장애 아동 및 발달성언어장애 아동의 뇌 단일광자방출전산화단층촬영 소견에 대한 예비연구

이호분,신의진,육기환,유영훈,노경선,송동호 대한소아ㆍ청소년정신의학회 1997 소아청소년정신의학 Vol.8 No.2

소득작물 전후작지 적응 극단기성 벼 ‘중모 1032’

손영보,이종희,조준현,이지윤,오성환,송유천,박동수,박노봉,김상열,여운상,남민희,권영업 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

胡 Silage의 好氣的 變敗에 形하는 豫乾과 Propionic acid 및 Lactic acid bacteria의 效果

宋瑛敏,金斗煥 진주산업대학교 1992 論文集 Vol.30 No.-

호맥을 재료로 예취직후와 하루동안 예건한 후에 propionic acid를 재료 중량의 0.7% 처리하고 Lactobacillus plantarum을 10^5개 수준으로 첨가하여 silage를 제조하여 60일간 실내에서 보관하였다. 개봉후의 호기적 조건으로 silage의 각종 성분의 변화에 의한 품질 변화를 조사하였는데 그 결과는 다음과 같다. 1. 호기적 기간동안 온도변화는 크게 나타나지 않았으며, 무처리보다 propionic acid 및 Lactobacillus plantarum 첨가한 것은 온도변화가 완만하였다. 2. 호기적 조건으로 인한 pH 변화는 무처리구는 크게 증가되었으나, propionic acid 및 Lactobacillus plantarum 첨가구는 거의 변화가 없었다. 3. 호기적 기간동안의 유산함량의 변화는 모든 처리구에서 감소되었으나, 예건을 하고 Lactobacillus plantarum 첨가구가 가장 높게 유지되었다. 4. 초산함량의 변화 또는 유산함량의 변화와 비슷한 경향이었다. 5. 낙산함량의 변화는 호기적 기간동안 큰 변화는 없었으며, Lactobacillus plantarum 첨가구가 가장 낮았다. 6. 총질소 함량 및 암모니아태질소 함량은 호기적 조건으로 증가되었으며, 총질소에 대한 암모니아태질소의 비율도 증가되어 품질이 떨어짐을 나타내었으나, propionic acid 및 Lactobacillus plantarum 첨가구는 품질 변화가 크지 않았다. 7. 호기적 조건에서의 silage의 화학적 조성은 큰 변화가 없었다. This experiment was conducted to investigate the effects of propionic acid and lactobacillus plantarum preventing on aerobic deterioration of Rye plant silages. Grass material was wilted for a day before ensilng and propionic acid 0.7% (w/w), lactobacillus plantarum 10^5 of fresh matter was application at ensuing time. Changes in fermentation acids, temperature, pH, distribution of the nitrogen contents were evaluated from the time of opening the silo until the 7th day of aerobic exposure period. The results obtained are summarized as follows ; 1. During the 7 days of aerobic exposure period the temperature of silage with all treatment did not significantly increased. 2. Changes in pH values during the 7 days of exposure period, silage without any treatment dramatically increased while, pH values of silages treated propionic acid and lactobacillus plantarum remained nearly constant. 3. Lactic acid content was decreased in all silages while silage treated lactobacillus plantarum little changes in aerobic deterioration. 4. Acetic acid content was decreased for the silages treated lactobacillus plantarum. 5. Changes in butyric acid content was little, silages for lactobacillus plantarum treated lowest. 6. During the aerobic exposure period, total nitrogen and ammonia nitrogen content was increased, but silage for the propionic acid and lactobacillus plantarum treated fermentation quality was no marked difference.

저염농도의 자리발효식품의 가공에 관한 연구

송대진,김재하,강영주,김수현,고영환,하진환 濟州大學校 工科大學 産業技術硏究所 1990 産業技術硏究報告 Vol.1 No.-

This study was carried out to obtain the basic data on salted and fermented damsel fish(Jari-Jeot), one of the important traditional marine foods in Cheju-Do. and also to seek salt lowering method for the development of a new local tourist food. The results are as follows : The best organoleptic results were obtained after 60 days' fermentation for 25.0, 12.5 and 10% of salt-added group, and around 45 days for 7.5 and 5% of salt-added group. In raw fish ingredient IMP was abundant which marked 17.7 μmole/g while in fermented fish hypoxanthine was predominant but ATP and ADP were not detected after 30 days' fermentation. Sixteen kinds of free amino acids were detected and identified in Jari-Jeot instead of 17 kinds of those in raw sample. The abundant amino acids in Jari-Jeot after 60 days' fermentation were lysine. alanine, glutamic acid, glycine and leucine, and those were consisted of approximately 60% of the total free amino acids. During fermentation the content of TMAO was decreased gradually and no TMAO was detected after 75 days' fermentation while that of TMA was increased during fermentation up to 45 days' and decreased afterwards. The fatty acid of low-salt Jari-Jeot was composed of 31.9% of saturated acids, 13.2% of monoenoic acids and 54. 9% of of polyenoic acids. While the content of EPA in polyenoic acids was 1.9%, that of DHA was 23.0%. In order to lower salt concentaration of fermented damsel fish, additon of Pediococcus halophilus culture as a starter together with 10-12.596 of salt, 4-5% of KCI, and 2% of glucose gave as good quality as traditionally made Jari-Jeot.