오존을 이용한 조류제거에 관한 연구

김은호,심은기,박인수,황영기 경남대학교 신소재연구소 1999 論文集 Vol.11 No.-

본 연구에서는 이취를 유발하는 조류가 정수공정에 유입되었을 경우, 대표적인 고도종수처리 공정으로 알려진 오존처리공정에서 오존접촉시 pH, 총유기탄소(TOC), 자외부 발현성물질(UV-254) 및 NH4+-N 등의 변화특성을 조사하였다. pH가 초기에 7.4에서 오존접촉 10분까지는 급격한 pH 저하현상을 보인 후에 pH는 서서히 감소하는 현상을 보이며 오존접촉 100분에는 2.1까지 저하되었다. TOC와 UV-254는 오존과의 접촉시간에 따라 지속적으로 감소하는 경향을 나타내었다. NH4+-N와 NO2--N의 농도에 비해 NO3--N은 비교할 수 없을 정도의 높은 농도 차이를 보이고 있다. 오존접촉시간이 길어질수록 전기전도도 값도 높아지는 것을 알 수 있었다. The objectives of this research were to estimate variation characteristics of pH. TOC. UV_254 and NH₄^{+}-N. etc. if odorous generated algaes flowed into water treatment plant and they contacted with ozone known as typical advanced treatment. Initial pH 7.4 did suddenly decline to early l0min. and then pH drop did almost occur. and pH decreased to 2.1 in ozone contact 100min.. TOC and UV-254 continued to decrease with passed time of ozone contact. NO₃^{-}-N cocentration was much higher than NH₄^{+}-N and NO₂^{-}-N for whole test period. Conductivity showed high as passed time of ozone contact.

석회석을 이용한 폐광산폐수처리

심은기,김은호,박인수,황영기 경남대학교 신소재연구소 1999 論文集 Vol.11 No.-

석회석을 이용하여 혐기성 처리를 위한 폐광산폐수의 화학적 전처리 특성을 평가하였다. 반응시간에 따른 석회석에 의한 처리시 반응종료 2시간에 pH 3.67이였고 SO42-4.7%, Fe 26%, Al 22%, Pb 18% 및 Mn 8%의 제거효율로서 소석회에 비하여 낮은 처리특성을 보여주고 있다. 석회석의 반응속도는 온도가 증가함에 따라 감소하는 경향을 보였다. 혐기성 석회석 충진층의 경우에 실험기간내 pH는 평균 4.51이였고 SO42-4.5%, Fe 15.3%, Al 20.1%, Pb 23.7% 및 Mn 5.87%의 평균 제거효율을 나타내었다. 혐기성 석회석 충진층은 pH 상승효과가 그다지 없었으며 SO42- 및 중금속제거율 또한 아주 낮아 석회석만으로 폐광산폐수의 처리에는 한계점이 있는 것으로 평가되었다. 그러나, 폐광산폐수를 SRB에 의한 처리시의 전처리 공정으로 활용한다면 강산성인 폐광산폐수를 초기에 pH를 상승시켜 처리계에 높은 알칼리도를 제공함으로서 시스템의 안정화에 기여할 수 있을 것으로 여겨진다. This research was carried out to investigate chemical pretreatment using limestone in treat in g abandoned mine drainage with anaerobic treatment. If treating limestone with abandoned mine drainage. after 2day. pH was increased to 3.67, and So₄^{2-}, Fe. Al. Pb and Mn were removed 4.7%. 26%. 22%. 18% and 8%. respectively. It could be showed that limestone did slowly react with temperature increasing. If treating anaerobic limestone packing column with abandoned mine drainage. for experimental period. average pH was 4.51, and average So₄^{2-}, Fe. Al, Pb and Mn were removed 4.5%. 15.3%. 20.1%. 23.7% and 5.87%. respectively. So, it would not be suitable for abandoned mine drainage. But if utilizing limestone as pre- treatment process for treating abandoned mine drainage with SRB, becaus it did initally neutralize abandoned mine drainage, it could forward to stabilize system.

흡착제를 이용한 수중의 미량이취물질 분석법 개발에 관한 연구

심은기,김은호,곽철,황영기 경남대학교 신소재연구소 1999 論文集 Vol.11 No.-

본 연구에서는 다양한 흡착제들과 추출용매들을 사용하여 이취물질의 효율적인 분석기술을 개발코자 하였다. Geosmin의 흡착능 실험에서는 XAD 수지계통이 월등히 우수한 흡착능을 가진 것으로 나타났으며, 이중에 XAD-2 수지는 시료 100ml 당 300mg을 투여하였을 때 Geosmin 흡착능이 가장 뛰어났다. 추출용매별 Geosmin의 추출능 실험에서 액/액 추출법으로 실험하였을 때 MTBE와 Dichloromethane은 48%, 47%로 거의 비슷한 회수율을 나타내었고, XAD-2 수지를 이용한 고/액추출법으 경우에는 MTBE가 94% 정도로 회수율이 가장 높았고, Dichloromethane 79%, n-Hexane 39%, Diethylether 35% 순으로 나타났다. 염석제(NaCl)를 첨가하였을 경우에 Geosmin의 회수율 실험에서 MTBE를 이용하여 액/액 추출법으로 실험하였을 때 염석제 5g 첨가시 회수율이 75%로 가장 높았고, XAD-2 수지를 사용한 고/액추출법의 경우에는 추출용매 MTBE와 Dichloromethane에 대해 염석제의 투여에 의한 회수율의 증가는 없는 것으로 나타났다. XAD-2 수지의 진탕시간별 Geosmin의 흡착실험에서는 24시간 동안에 Geosmin에 대한 흡착량에는 거의 큰 변화를 나타내지 않았다. 최적의 흡착제는 XAD-2 수지이고 용매는 MTBE가 가장 안정적이고 우수한 것으로 평가되었으며, 액/액 추출법의 경우에 염석제를 첨가하였을 때가 첨가하지 않은경우 보다 회수율이 높게 나타났다. 고상 추출시 분석감도도 용매만 사용하여 추출한 결과보다 2배 가까이 높게 나타나 극미량 함유물질 분석시 전처리 기술로 응용 가능한 것으로 평가되었다. Even if odorous compounds remain very low concentration in water. it cause strong odor. Because Geosmin and most of odorous compound had very low vaporization. those were difficult to analyze with GC/MSD and Purge & Trap. So. we needed pre-treatment method for decreasing amounts of extracting solvents, improving recovery efficiencies and increasing analytical efficiencies. This study developed efficient technology for analyzing odorous compounds, using various adsorbents and extracting solvents. The optimum adsorbent was XAD resins. Especially, SAD-2. XAD-7 and XAD-2010 were superior. but XAD-2 of these and the optimum extraction solvent is MTBE. Other extraction solvents' efficiency is in order of MTBE〉Dichloromethane〉n-Hexane〉Diethylether. The optimum NaCl dosage for increasing efficiency is 5g in liquid-liquid extraction method. The shaking time(0-24hr) has no concern with adsorption efficiency. The optimum adsorbent is SAD-2 resin and extraction solvent is MTBE. Dosing NaCl. adsorption efficiency is increased in liquid-liquid extraction method, but NaCl has no effect on liquid-solid extraction method. In this experimental results. this method will apply to not only Geosmin but other well-known odorous compounds (2-MIB, 1BMP. IPMP, TCA) and algae toxins (Mycrocystin. Anatoxin etc.).

딸기 와인 개발을 위한 최적 발효 조건

김민기, 박미성, 엄은경, 조은혜, 이종수 배재대학교 자연과학연구소 2016 自然科學論文集 Vol.27 No.1

Optimal fermentation condition for development of new strawberry wine were investigated. Commercial yeast, Fermivin was good for brewing of strawberry wine and its optimal addition concentration was also 1%. Maximal ethanol content of strawberry wine was obtained when raw strawberry juice(24 brix) was fermented by 1% Fermivin at 25℃ for 7 days and its antioxidant activity was 78.5%. 새로운 딸기 와인을 개발하기 위한 최적 발효조건을 연구하였다. 시판효모인 페미빈이 딸기와인 제조에 제일 좋았고 1%가 최적 첨가 농도이었다. 딸기와인의 최대 에탄올 생성량은 생딸기주스 (24brix)를 1% 페미빈으로 25℃에서 7일 발효시켰을 때 얻어졌고 이 발효액의 항산화활성은 78.5% 이었다.

우리나라 파프리카 수출단지 및 선과장의 병해충 조사

김기돈,이시원,강은하,신용길,전재용,허노열,이흥식 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The disease and insect were surveyed locally in greenhouse, fruit packing house and store house of 51 farms in 13 towns having purpose of paprika exportation. By analysis, various disease and insect were not only founded locally but more ones detected in farms having old facilities and no natural enemy. We found 15 pathogens such as Fusarium spp., Alternaria solani, Leveilluila taurica, PepMV (Pepino mosaic virus) and TMV (Tobacco mosaic virus) in greenhouse, Fusarium spp. in fruit packing house and Penicillium spp. in store house. We found 15 insects in greenhouse such as Bemisia tabaci, rialeurodes vaporariorum and Myzus persicae in greenhouse, Hylobitelus haroldi in fruit packing house. However, the problem quarantine disease and insect for importation and exportation were not detected in inspection time.

急性메칠水銀 中毒時 白鼠組織의 經時的 變化와 마늘의 防禦效果에 關한 實驗的 硏究

李文基,車喆煥,裵恩相 고려대학교 의과대학 1985 고려대 의대 잡지 Vol.22 No.1

This study was undertaken to examine the protective effect of garlic in heavy-metal poisoning. Using sufficient amount of garlic which is thought to contain disulride compound (diallyldisulfide) and sulfhydryl group(such as glutathione), a chronological observation wasmade to determine the effect of garlic in removing heavy metal from tissues and restoring the normal histological architecture in organs of rats poisoned by heavy metals. A total of 80 albino rats were divided into two groups; a garlic-treated group and a non-treated group. As pretreatment, 5mg/kg of methyl mercury were injected into the peritoneal cavities of the rats of both groups for 8 days to induce an acute mercury poisoning. The garlic-treated group was fed with commercial feed containing 6.7% of garlic and the non-treated group was fed without garlic from the first day of pretreatment. Blcod was collected from all the rats on 10th, 30th, 50th, and 70th day after a final injection of methyl mercury and centrifuged to collect erythrocytes. At the same time, liver, brain and kidney were ectomized to study the total amount of accumulated mercury and the pathological changes of the tissues in those organs. The results are as follows : 1. It is certain that garlic has contributed in the remova1 of mercury accumulated in the organs. The half-reduction period of mercury in erythrocytes liver, and kidney appeared abou 50 days after the final injection of methyl mercury. Although the removal of mercury from the tissues increased remarkably in the garlic treated group, the removal of mercury from the brain tissue appeared to be below that of other oygans. Compared with the mercury in tissues on the 10th day, the remaining amount of mercury 70 days after the final injection was 23% in erythrocytes 20% in the liver, 41% in the kidney and 50% in the brain. 2. As for the recovery process of histopathological damages in the kidney of mercury poisoned rats, the non-treated group showed dilatation of nephrons and denudation of epitherial lining on 10th and 30th days, and not until the 50 day was the epithilial regeneration seen. On the contrary, in garlic-treated group, the recovery along with the regeneration of the epithelial cell appeared clearly on-l0th day, and on 30th day the mercury poisoned renal tubule was restored to its normal architecture. 3. The moderate demyelinization in white matter of the, brain appeared by 10th day and progressed with time and neuronal necrosis in granular and Purkinje layer was seen by 50th day in the non-treated group. The degree of damage, however, was mild and the regeneration time was short in the garlic-treated group.

고양이 심장에서 관상동맥 결찰과 재관류로 인한 ATPase 변화에 관한 세포화학적 연구

김은기,류임주,엄창섭,서영석 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.1

To understand the behaviors of Ca^(++)-ATPase and Na^(+)-K^(+) ATPase in ischemic and ischemic-reperfused heart, and to elucidate their roles in those conditions, the authors observed cat myocardium ultracytochemically. Acute ischemia was induced by ligation of the anterior interventricular branch of left coronary artery. Reperfusion was begun after 20minutes of ischemia and discontinued after 1-2 minutes when ventricular fibrillation appeared on EKG. The reaction products of Ca^(++)-ATPase were irregular In shape, and distributed mainly in myocytes in the vicinity of capillaries. In normal cardiac myocytes, they were present at plasmalemma, sarcoplasmic reticulum, transverse tubules, intercalated discs including intermediate junctions, desmosomes and gap junctions. Some were scattered along with inner mitochondrial membranes and myofibrils. After 20 minutes of ischemia. almost all structures had negligible reaction products. except some dilated sarcoplasmic reticulum beneath the plasmalemma, which retained strong reactivities. After reperfusion, the reaction products showed a tendency to be Increased. But there was hardly any reaction products in mitochondria. Patches of myofibrils with much increased enzyme activity than other myofibrils were found scattered. In addition, macrophages showed strong reactivity throughout their nuclei. Endothelial cell nuclei, however, were free of reactions in all conditions. The reaction products of Na^(+)-K^(+) ATPase were fine In nature. In normal cardiac myocytes, they were present at plasmalemma, transverse tubules, sarcoplasmic reticulum, various structures of intercalated discs, myofibrils, mitochondria, inner nuclear membranes and heterochrormatin. In ischemic heart, the reactions decreased generally and increased after reperfusion. Mitochondria in normal states had many fine reaction products scattered throughout them to the degree of masking their details. In ischemic conditions, the reaction products, decreased in number, were located contiguous to inner mitochondrial membrane. After reperfusion each reaction product was increased in size, although the amount was less than normal conditions. Gap junctions were unique structures'in that they lacked reactivity both in ischemic and ischemic-reperfused conditions. Other structures of the intercalated discs, especially desmesomes, showed increased reactions. Some myofibrils showed much strong reactions in ischemic and ischemic-reperfused groups, even though the reactivity at myofibrils as a whole was decreased. Under all conditions, the nuclei of interstitial cails and endothelial cells had their reaction products related to the nuclear membranes and heterochrormatin. The authors, based on the above observations, conclude that Ca^(++)-ATPase may have little role in ischemic and ischemic-reperfused conditions. Na^(+)-K^(+) ATPase during reperfusion, however, even depressed in their activities, may try to normalize the decreased intramitochondrial ATP contents and the increased intracellular Na^(+) concentrations resulted from ischemic conditions.

하악과두에 발생된 골연골종

정기훈,김은경 大韓口腔顎顔面 放射線學會 1993 Imaging Science in Dentistry Vol.23 No.2

Although osteochondroma is not rare in the axial skeleton and long bones, it is very rare in the jaw. It is a benign chondroma within which partial endochondral ossification occurs. There are two types, the central one and the peripheral one. Peripheral type is more common than central one in the jaw, but it is not frequent. Especially it is rare at the mandibular condyle. When it occurred at the mandibular condyle, it is generally located at lateral portion of the condyle. In that case, facial asymmetry with occlusal change is the characteristic clinical feature. But it is similar to condylar hyperplasia so that misdiagnosis can sometimes occur. The differential point is as follows: Hyperplasia generally appears as a generalized enlargement of the condylar process with a normal cortical thickness, but osteochondroma usually appears as focal growth or mass. We report a very rare case of peripheral osteochondroma at the mandibular condyle in a 27-year-old male patient who visited DKUDH with a chief complaint of the facial asymmetry.

五成貯水池의 富營養化 豫測에 關한 硏究

金煥起,朴相肅,申殷燮 全北大學校 附設 都市및環境硏究所 1994 都市 및 環境硏究 Vol.9 No.1

This study was performed in order to estimate the eutrophic potentials in Oseung Reservoir, located on Jeong-eup in Chonbuk. The experiment was carried out to expect the eutrophication by nitrogen and phosphorus inleted collection-area after Dam construction. The obtained results are as follows; 1. According to water quality analysis, 3.6∼4.7㎎/ℓ of COD appeared to the much biological nondegradation organic even though BOD 0.4∼1.1㎎/ℓ. 2. The expected water quality of Oseong will attach BOD 0.8㎎/ℓ, COD 4.09㎎/ℓ, T-N 6.67㎎/ℓ and T-P 0.034㎎/ℓ. 3. The restrain function of the reservoir is T-P according to the criteria of eutrophication. 4. After Dam construction, KSTI 48.5 produced from T-P will be graded in the middle condition. Therefore, the good counter measure is expected to prepare.

관절염을 가진 대상자의 가족지지, 자가 간호 및 삶의 질과의 관계

선은경,박소연,박일지,서가은,손용숙,손인옥,용진선 가톨릭대학교 간호대학 호스피스 교육연구소 2006 호스피스논집 Vol.10 No.-

Purpose : The purpose of this study was to investigate relationships among family support, self-care, and quality of life of patients with arthritis through a survey. That will be basic data to plan nursing intervention for promoting quality of life for patients with arthritis. Method : The convenient sample of this study consisted of 120 patients with arthritis and data were collected using questionnaires during August 2006 from two OPDs of rheumatoid centers in C University hospitals. The study instruments were used to measure Self Care (So, 1992), Family Support (Kang, 1984), and Quality of Life (Ro, 1988). The data were analyzed using ANOVA, Duncan test, and Pearson correlation. Result : The mean scores were 3.56 for family support, 4.16 for self-care, and 3.19 for quality of life. The level of self-care was significantly higher in those men, having an occupation, higher income, and living with family members. The level of family support was significantly higher in those men, having an occupation, living with family members, and having a helper. The level of quality of life was significantly higher for those men, having a higher income, and shorter length of illness. Three relationships were found to be positively correlated: 1) between the levels of family support and self-care (r=.53), 2) between the levels of self-care and quality of life (r=.55), and 3) between the levels of family support and quality of life (r=.54). Conclusion: Therefore, a nursing intervention program needs to be developed to promote family support, and self-care for quality of life for patients with arthritis.