갑상선 초음파검진의 유용성

배오근,김재권,강명순,조영익,김임봉,신유진,임성규,서민호 한국건강관리협회 2000 건협 Report Vol.3 No.-

Mo 화학기상증착에 있어서 불순물 농도에 미치는 증착조건의 영향

배상석,서성교,홍은식,김승모,조미정,한혜정,이두성,김세훈,민석홍 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-

The thermal decomposition process of Mo(CO)_6 on chemical vapor deposition was investigated by analyzing the effects of deposition temperature, pressure, and reaction gas on the phase change of deposited films. Mo_2C was deposited at or below 350℃ due to the incompleteness of thermal decomposition of Mo(CO)_6, but Mo films was successfully deposited at 400℃ or higher temperatures. The variation of deposition pressure did not change the dependence of decomposition process on deposition temperature. The activation energy of surface reaction was 5.8 ㎉/mole.

회분식 활성슬러지 반응기에 의한 염분폐수의 생분해성 평가

서정범,김민종,배지은,이상명 안양대학교 산업기술연구소 2001 自然科學硏究 Vol.8 No.-

생물학적 처리가 가능한 염분 농도의 범위를 알아보기 위하여 회분식 활성슬러지 반응기에 합성폐수를 주입하여 실험을 수행하였다. 연구결과 폐수중의 염분 농도가 20,000mg/L 이상이 되면 폐수처리 효율이 떨어지는 것을 알 수 있었다. 염분 농도가 10,000mg/L 이하 일때는 회분식 활성슬러지 반응기에 의한 TOC 제거효율이 85% 이상인 반면, 염분 농도가 20,000mg/L 이상일 때는 TOC 제거효율이 80% 이하를 나타내었다. 또한 생물반응조내의 MLSS 농도에 따라 질산화 정도가 다름을 알 수 있었다. To determine the salt concentration range which wastewaters be treated by biological processes, experiments were performed by feeding activated sludge batch reactor with synthetic organic wastewater. Results of the research showed that wastewater treatment efficiencies deteriorated as salt concentration of wastewaters became above 20,000mg/L. The TOC removal efficiencies of activated sludge batch reactor were above 85% when the salt concentration were below 10,000mg/L. On the other hand, when the salt concentration were above 20,000mg/L, the TOC removal efficiencies were below 80%. It was also found that nitrification was affected by the MLSS concentration in the reactors.

급성 골수성 백혈병 환자에서 발생한 침습성 아스페르길루스중에 대한 수술적치료 1 예

배영환;어원식;어상민;김승만 김태영;박수영;서영경;정은주;안효정 인제대학교 2011 仁濟醫學 Vol.32 No.-

Invasive pulmonary aspergillosis is known to have a poor prognosis and major cause of morbidity and motality in patients with hematologic disease. Without adequate therapy, invasive pulmonary aspergillosis will almost always progress to fatal pneumonia. Early administration of antifungal agents in patient with invasive pulmonary aspergillosis is most important. And surgical resection of aspergillous-infected tissue may be useful in patients with lesions that are contiguous with great vessel and lesions causing hemoptysis. We reported a rare case of surgical resection as curative treatment for invasive pulmonary aspergillosis patient in 58-year-old man who had the history of acute myeloid leukemia.

아황산가스가 흰쥐 허파조직내 Laminin 활서에 미치는 영향에 대한 면역조직학적 연구

배성만,정호삼,서윤경,백두진,김원규,윤지희 한양대학교 의과대학 2000 한양의대 학술지 Vol.20 No.2

Sulfur dioxide (SO_2), a kind of air pollutant, causes harmful damage to human body. In particular, inhalation of sulfoxide dioxide has been demonstrated to result in the injury to the upper respiratory duct. However, mechanisms by which SO_2 affects these tissues remain to be clarified. In the present study, to investigate the mechanism of SO_2 effects, the influence of SO_2 exposure was examined in terms of the injury of lung and the expression pattern of laminin in the basal lamina. The basal lamina is an important tissue for the regulation of internal respiration by composing of air-blood barrier. Sprague-Dawley rats repetitively exposed to a mixture of O_2 gas and SO_2 gas (250 ppm) for 30 minutes a day were sacrificed to observe the distribution of laminin in the alveolar septum as well as the morphological alteration of alveoli using immunohistological methods. The resutls we observed were as follows: 1. Alveoli from SO_2-exposed rats (for 5 days) were strongly stained with anti-laminin antibody, suggesting laminin expressed at the high level, at week 1 to 3 upon exposure to SO_2 2. At week 1 to 3 after exposure of rats to SO_2, alveolar septa were collapsed, leading to the reduction of alveolar volume along with morphological changes to irregular shapes. 3. At week 4 to 6 after exposure of rats to SO_2, alveoli were weakly stained with anti-laminin antibody, suggesting laminin expression was decreased during this period. 4. Rats sacrificed at week 7 upon exposure to SO_2 exhibited the expansion of new alveoli and the expression of laminin was partially recovered up to the intermediate level. Taken together, these results demonstrate that the expression of laminin was enhanced in the early phase, followed by downregulation in the late phase. Moreover, lung injury and resolution were correlated with the level of laminin. Thus, these results suggest that SO_2 suppresses the expression of laminin, which may be associated with the neo-generation of lung tissue.

설계강우의 시간적 분포모형 적용성 연구

서진호,이상배,조흥제,민병형 東亞大學校 海洋資源硏究所 1995 硏究論文集 Vol.8 No.1

위천대표유역의 11녀간의 단독강우사상 3,550개를 선별하여 Yen-Chow의 삼각형 및 사다리꼴, Huff, Pilgrim-Cordery 및 Mononobe의 방법에 의한 지속시간별 설계강우의 시간적분포 특성치를 제시하였다. Yen-Chow 방법의 삼각형분포의 특성치 a 값은 0.44에서 0.50까지 분포하였고, 사다리꼴은 지속시간이 길어질수록 무차원 특성변수 h 의 값이 점차 커지는 경향을 나타내었다. Huff 4분기법에 의한 분석결과는 2구간 강우가 지배적이고 3구간 강우가 낮은 분포를 나타내었다. 또한 Pilgrim-Cordery 방법에서는 6시간까지는 점방위 강우형이고, 6시간이상은 점차 후방위로 변화하였다. Mononobe 방법은 시간별 강우량을 중앙집중형으로 나타내었다. 본 방법들의 적용성을 검토하기 위해 위천유역의 32개 관측 강우-유출자료를 이용하였고, 분석결과 Yen-Chow 방법의 삼각형분포가 비교적 재현성이 높게 나타났다. 이들 설계강우의 시간적분포모형들은 미계측유역의 유출해석에 중요한 수단을 제공할 것으로 판단된다. The historical data from 3,550 event storms during 11 years in Wi-stream basin have been used to investigate the statistical parameter of the time distribution for design storms by the method of Yen-Chow, Huff, Pilgrim-Cordery and Mononobe. The dimensionless value of triangular hyetograph, a , ranges from 0.44 to 0.50 and trapezoidal hyetograph, h , value increases as the duration time is getting longer in Yen-Chow method. In the Huff, the second-quartile storms occurred most frequently and third-quartile storms occurred most infrequently. In the Pilgrim-Cordery, the shapes for shorter than 6-hour durations are advanced tendency. However, for longer than 6-hour durations show delayed tendency. In the Mononobe, every one hour rainfall occured Centered Type. The application of these methods for each duration time was tested by using the observed rain-fall-runoff data of Wi-stream basin. As a result, the reappearance of hydrographs of triangular hyetograph by Yen-Chow method showed promising, and it was approved to be used for prediction of the ungaged basins.

응집에 의한 생물학적 처리수의 색도 및 난분해성 유기물 제거

서태경, 박상민, 박노백, 임지영, 전항배 충북대학교 건설기술연구소 2008 충북대학교 건설기술연구소 논문집 Vol.27 No.1

This study was to evaluate the optimum conditions for chemical coagulation to remove color and non-biodegradable organic matters from the biologically treated water of piggery wastewater. Raw water was fractionated by characteristics of dissolved organic matter. The fractions of hydrophilic substance and molecular weight cut-off(MWCO) below 500 in raw water were 51% and 74%, respectively. SC(streaming current) was measured to find out the optimum pH values and dosages for aluminium sulfate[Al₂(SO₄)₃·14H₂O] and ferric chloride[FeCl₃·6H₂O] as a coagulant, which was compared with color and turbidity removal efficiencies followed by coagulation, flocculation and sedimentation. From several jar tests, optimum pH values and dosages of coagulants were well matched with the results of SCD analyses. The optimum dosages(pH values) of aluminium and ferric were 5.84 mM(pH 4.0) and 7.03 mM(pH 5.6), respectively. At optimum conditions of coagulation, color removal efficiencies for aluminium sulfate and ferric chloride were as high as 89.3 and 97.9%, respectively. Chemical coagulation showed good performance to remove color and non-biodegradable organic matters from biologically treated water.

扶正解毒湯의 抗癌活性과 免疫調節作用에 관한 硏究

朴相采,宋昊哲,金東熙,徐榮培,朴陽春,金聖勳 대한본초학회 2000 大韓本草學會誌 Vol.15 No.1

To evaluate the antitumm activity and immune rsponse of Bujunghoedo!aaCtnng(BJHDn, studies were done experimentally. The rsulLF were OMaineed as fallow: 1. BJHDT e m c b erhibitcd a wmk eytotoxieity against SKOV-3, and SK-MELJ cell lines, while it showed a good effectivaes against BlE-FIO up to 80% of control at concenmion of over 0.25mg/ml 2. BJHDT emcG signifimtly showed an inhibitor, effect on DNA topowmewz I from calf thpw at 500 mglmf. 3. BJHDT eXhaetS showed antiadhesive rates against A549, 30% at 0.5 dm!, 80% at 1 mplm!. 4. BJHDT exmcb inhibited CAM angiogenesis up to 40%. 6. BIHDT extracb prolonged life span of ICR mice bearing S-180 sarcoma cells up to 127.1%. 7. In FACS analysis, the population of helper T cell and tended to increase. 8. Pmliferatbn rate of splenoeyte WBS inneased at 0.5mglml or more in a dase dependent fashim as compared with Control. These resulb suggested that BIHDT exham might k usefully applied for treatment of cancer and also it was necessary m do more studies about its mechanisms.

淸熱藥類의 免疫藥理學的 考察(Ⅲ)

張成翼,徐榮培 대전대학교 한의학연구소 2001 혜화의학회지 Vol.10 No.1

In the result of investigating traditional chinese medical literatures to understand definite immunopharmacologic effects of drugs for clearing away heat and detoxicating such as Ampelopsis Radix, Rhapontici Radix, Cremastrae Appendiculatae Tuber, Rhaseoli Radiati Semen, Potentillae Discoloris Herba, Potentillae Chinensis Herba, Chrysanthemi Indici Flos, Lonicerae Caulis, we could reach conclusions as follows: 1. Rhapontici Radix, Chrysanthemi Indici Flos can increase voracity of leukocytes, macrophages and increase to produce IL-2 by splenocytes. 2. Potentillae Chinensis Herba, Chrysanthemi Indicici Flos, Lonicerae Caulis can inhibit activities of B lymphocytes and have anti-inflammatory effects. 3. Drugs for clearing away heat and detoxicating almost have antibiotic, anti-inflammatory effects, and so can be applied to many inflammatory immune diseaese. 4. Drugs for clearing away heat and detoxicating also have antifebrile, diuretic, detoxicating effects. Above results indicates that Drugs for clearing away heat and detoxicating have immunosupprissive effect, so that can be applied to many inflammatory immune diseases.

소규모 도시 생활폐기물 매립장 중 VOC의 농도 측정 : 경산시 삼풍동 매립장을 대상으로 A Case Study at the Sampung-dong Landfill in Gyungsan City

백성옥,김배갑,서영교 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.1

In this study, we investigated the concentrations of volatile organic compounds (VOC) in the ambient air of a small scale municipal waste landfill site. Seasonal sampling was carried out simultaneously at two sites, i.e. one in the center of the landfill area, and the other at a boundary site. Among 38 target VOC, toluene appeared to be the most dominant compound, followed by benzene, and xylenes. The higher levels of BTX imply that paint-containing materials and/or organic solvents are the most significant sources of the VOC in the landfill environment. Seasonal variations for the samples collected at the landfill site indicated that the VOC concentrations tend to be higher in the spring and fall season and lower in the winter season. In addition, night-time concentrations appeared to be generally higher than day-time. Such daily variation might be due to more stabilized atmosphere during the night-time. Similar patterns were also found in samples collected at a boundary site. This study demonstrated that the municipal landfill, although it is small-scaled, could be an important emission source of atmospheric VOC, particularly in the vicinities of the landfill. Thus, an appropriate control strategy is required to prevent any undesirable secondary pollutions from the environmental sanitary facilities such as landfill.