서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

붕어의 발육 및 생식에 미치는 비소의 영향

남성숙,이철우,류지성,박응로,남규찬,류홍일,전성환,나진균,최덕일,박광식 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.2

To evaluate the arsenic effect of fish endocrine disruption, crucian carp (Carassius auratus) were treated with 0.5 mg/L and 3.0mg/L of As₂O₃ for 14 days and gonadal development was examined by histological analysis. In ovaries from female crucian carps exposed to 3.0mg/L, immature follicles and atretic follicles were appeared while various normal developmental stages of oocytes were shown in control group. Body weight and Gonadosomatic Index (GSI) of treated carp were also decreased compared to control group. However, no other significant histological changes in liver or kidney were shown in this exposure scheme, This means that reproductive organs are more sensitive than other organs and arsenic may exert endocrine disrupting effect through inhibiting the development of reproductive organ in fish.

연속회분식 반응조를 이용한 슬러지 소화에서 포기비율과 포기빈도가 슬러지 소화에 미치는 영향

김성홍,김희준,최영균,정태학 대한상하수도학회 2003 상하수도학회지 Vol.17 No.2

Lab-scale sequencing batch experiments were carried out to investigate the effects of aeration ratio and aeration interval on nitrogen and phosphorus transformation during the sludge digestion by intermittent aeration. The highest nitrification and denitrification efficiency could be obtained when the aeration ratio was 0.25. Nitrification inhibition caused by alkalinity deficit was not observed at the aeration ratio of 0.75, however denitrification was limited at this level of aeration ratio. Biological phosphorus accumulation was possible at the aeration ratio of 0.25, however it was not observed when the aeration ratio was over 0.5. Under the same condition of aeration ratio, aeration interval played an important role in phosphorus release. Soluble phosphorus concentration of digested sludge was about 1.5㎎/L when the aeration interval was 4 hr and that was much lower than the concentration (12-18㎎/L) when the aeration interval was 20-44 hrs.

대학생들의 氣에 대한 의식 조사 연구

홍성균,이성수,안규동,이병국 순천향대학교 산업의학연구소 2001 순천향산업의학 Vol.7 No.1

Ki is emerging and getting popular as a new alternative therapy in new millenium. The purpose of this study was to investigate the understanding and experience of the Ki therapy for college students. 320(Male=138, Female=182) students were participate in this study. Study subjects were answered with prepared 8 questions for their personal opinion and experience about Ki therapy. Study variables about personal information such as sex, blood type, religion, health status, personality, parent's religion, parent' occupation and parent educational level were also collected. The results of this study were as follows; 1 Among all study students (n=320), 89% of students answered positively in the existence of Ki, whereas only 11% answered negatively. 2. Among all study students (n=320), 13% (n=41) of students had a chance to have a Ki therapy and among 41 students 93% of them had experienced real Ki in any kind of form. 3. Among 41 Ki experienced students, 32% of students felt a feeling of floating and flying, 25% of students felt a feeling of pulling from the back and 21% of students felt a feeling of warming and comfortable, 10% of students felt refreshment and 5% of students felt a feeling of dizziness, whereas only 7% of students did not feel anything from Ki therapy. 4. While 53% of students among 41 Ki experienced students experienced their Ki in Ki training center, 31% and 6% of students experienced in college or university and other place, respectively. 5. Among all study students, 89% of students thought that Ki therapy was useful and wanted to have Ki therapy in case of medical attention, whereas only 11 % of students did not want Ki therapy. 6. Among study students with positive thinking about Ki therapy, 24% and 23% of students thought Ki therapy useful for (endocrine and skin diseases) and chronic adult diseases such as hypertension, cardiac disease, diabetes and obesity, respectively, whereas 21% and 18% of study students thought Ki therapy useful for neuropsychiatric disease and digestive diseases, respectively. 7. Regarding to the reason of attraction of Ki therapy compared with other treatment methods, 51% of students answered that Ki therapy gave comfortable and easiness to mind and 42% of students answered that it did not need any kind of injection or medicine.

하수의 유기물 분류에 미치는 동력학적 영향인자의 민감도 분석

최영균,김성홍,정태학 대한상하수도학회 2003 상하수도학회지 Vol.17 No.3

The effects of 6 kinetic parameters such as Y_H (yield coefficient of heterotrophs), b_H (decay rate of heterotrophs, /d), μ_HR (heterotrophic maximum specific growth rate on RBCOD, /d), μ_HS (heterotrophic maximum specific growth rate on SBCOD, /d), K_S (heterotrophic half saturation coefficient for RBCOD, ㎎COD/L) and K_X (heterotrophic half saturation coefficient for SBCOD) on the variation of RBCOD (readily biodegradable COD) concentration were analyzed during the COD fractionation of primary settled municipal wastewater by simulation of respirometric tests. Variation of RBCOD concentration was the highest when Y_H was changed within the acceptable range and standard deviation was about 48% of the averaged RBCOD concentration. Standard deviations of RBCOD concentration were about 10.4 and 6.3% of the averaged values when μ_HS and K_X were changed, respectively and it was about 6.5% when b_H was changed. The effects of μ_HR and K_S on RBCOD estimation were lower than the other kinetic parameters and the variations of RBCOD concentration were only about 2.2 and 3.5% of the averaged value when those two kinetic parameters were changed, respectively. Accordingly, hydrolysis or oxidation of SBCOD (slowly biodegradable COD) was more important than RBCOD oxidation during the analysis of respirometric test. It means that the variation of RBCOD concentration was more sensitive to the change of μ_HS and K_X than that of μ_HR and K_S because μ_HR and K_S did not directly affect the RBCOD concentration in wastewater. However, μ_HS and K_X could affect the RBCOD concentration through hydrolysis of SBCOD.

유기용매 추출법과 산가수분해에 의한 포플라의 전처리 및 효소당화액을 이용한 생물고분자의 생산에 관한 연구

김균성,박정극 동국대학교 산업기술대학원 1993 산업기술논문집 Vol.1 No.-

In this study the lignocellulosic biomass, Italy poplar, was pretreated by the chemical pretreatment method, i.e., organic solvent (Phenol/H_2O) extraction. Using Phenol/H_2O solvent system. Wood yield, % delignification and % sacchari-fication(72hours) of poplar after pretreatment at 190℃, 60 min. which was found out as the optimum pretreatment condition, were 46,3%, 96.1% and 83.35% (43.87 g/L) respectively. The possibility of reusing the spent organic solvent and recovery of hemicellulose fraction were also studied. By recycling spent black organic solvent in this process, we obtained an approximately identical results. The percent saccharification of 79.9% (43.6 g/L) was obtained from the recycled process and the degree of delignification was more than 99%. The delignification reactions using Phenol/H_2O solvent system showed two distinct mechanism of pseudo first order reactions (fast and slow), and the activation energy of the fast reaction was 38.4Kcal/gmol. For the recovery of hemicellulose fraction, poplar wood was pretreated using acid as a catalyst at high temperature and low concentration;180℃,0.05%∼0.15 vol% H_2SO_4(HTLC), and also at low temperature and high concentration;120℃,1∼4 vol% H_2SO_4(LTHC). 58% of hemicellulose was recovered whin the Italy poplar was pretreated at 180℃ with 0.1 vol% H_2SO_4 for 10 minutes (HTLC), and 74.4% recovery of hemicellulose fraction was obtained when it was pretreated at 120℃ with 4 vol% H_2SO_4 (LTHC) for 20 minutes, which is considered as an optimum condition for hemicellulose recovery. And after these acid hydrolysis followed by solvent extraction at 190℃, 60 min, the lower amount of sugar was obtained compared to one-step solvent extraction which was studied. As an application of saccharified broth, the culture of Zoogloea remigera 115 which produces biopolymer adsorbing heavy metals (Cu, Fe, Zn, Co etc) was conducted. When saccharified broth was used as a carbon source, the lag phase of the fermantation was longer than that of synthetic glucose media. After 60 hours of fermentation, the maximum cell density of 1.5 g/L was obtained. Final biopolymer concentration was 10.05 g/L after 200 hours of fermentation. Above experimental results showed the possibility of using saccharified broth as a carbon sourse for fermentation media.

구매단가 및 운송비 할인을 고려한 최적 주문 정책

김재균,신성환 울산대학교 1991 공학연구논문집 Vol.22 No.2

본 논문은 구입량에 따라 구매 가격과 운송비용이 각각 할인되는 상황하에서 주문 정책을 수립할 때 총비용을 최소화시키는 적절한 주문량을 결정하는데 그 목적이 있다. 본 고에서는 구매 단가의 경우에는 단계할인이 적용되고 운송비용의 경우에는 운송단위별로 할인이 이루어지는 경우에 대한 모델이 제시되었으며 이와같은 할인 계획하에서 최적 주문량을 결정할 수 있는 절차가 제시되었다. This paper deals with an EOQ model in which both the unit purchasing price and the freight cost depend on the quantity of the lot size. The model adopts incremental quantity discounts for the price and a general form of discounts for the freight cost. Investigation of the properties of an optimal solution allows us to develop an algorithm whose validity is illustrated through an example problem.

飼料作物의 輪作組合이 乾物收量, 土壤의 耐水性粒團率 및 窒素含量에 미치는 影響

安桂洙,趙聖均 順天大學校 1985 論文集 Vol.4 No.1

本 試驗은 飼料作物의 輪作組合이 建物收量, 土壤의 耐水性粒團率 및 室素含量에 미치는 영향을 究明하기 爲하여 夏節期飼料作物로 수단그라스계 잡종을 擇하고 冬節期飼料作物로 이탈리안 라이그라스, 호밀, 보리, 유채등을 擇하여 年間2期作∼3期作으로 6處理區 3反復 亂塊法으로 配置하여 圃場試驗을 遂行하였으며 얻어진 結果를 要約하면 다음과 같다. 1. 年間 乾物收量은 호밀과 수단그라스계 잡종을 輪作한 것이 가장 많았으며(P<0.01), 年間 2期作栽培가 3期作栽培 보다 有利하였다. 2. 土壤의 耐水性粒團率은 冬節期作付에서는 40%內外를 보이고 夏節期에는 35%內外를 보이고 있어 季節에 따른 差異는 多少 나타내지만 處理間의 有意性은 認定되지 않았다. 3. 土壤中의 T-N含量은 處理間의 有意性은 認定할 수 없으나 季節的 作付方式에서는 多少의 差異가 있었다. This experiment was carried out to investigate the effect of the rotational combination of forage cultivation on the dry matter yield, the water-stable aggregate rates and the nitrogen contents in the soil of the experiment field. The results obtained are summarized as follows; 1. In the annual dry matter yield, rye and sudangrass-hybrid plot was the highest(P<0.01), and the second crop system was higher than the third crop system. 2. The water-stable aggregate rates of the soil in the experiment field were about 40 %, 35% of winter and summer cropping system, respectively; however, no significant differences(p>0.05) between plots were observed. 3. In the total nitrogen contents in the soil of the experiment field, no significant differences(P>0.05)between plots, were noticed but there were somewhat differences in the winter cropping systems.

Prazosin의 항고혈압 효과에 대한 임상적 관찰

서세웅,이균태,김연호,조성락,신영우,신영기 최신의학사 1984 最新醫學 Vol.27 No.8

Silver Nitrate가 雄兎의 精巢에 미치는 影響

李殷奉,趙聖均 順天大學校 1983 論文集 Vol.2 No.1

Silver Nitrate 稀釋液(1%, 5%)을 白色 日本系 雄兎를 使用하여(生後 4∼5個月令) 9區로 各 4마리씩 配置하여 總 36마리에 1%, 5% Group에 0.5㎖씩 精巢內에 注入한 結果 다음과 같은 結果를 얻었다. 1. 各 Group間에 體重의 增減의 有差差가 없는 것으로 成長과 增體에는 支障이 없는 것 같다. 2. 外的인 精巢의 變化를 보면 1%, 5% Group 共히 注入後 2日에 膨脹(23.6×10.2mm→34.7×18.1mm)되었다가 다시 收縮되었으며 5% Group은 20日 後에 精巢組織의 壞死로 因하여 消失을 가져와 測定할 수가 없다. 3. 內的인 精巢의 變化를 보면 局部的 또는 全體的 組織의 壞死를 가져와 移動的이 아니라는 것을 알 수 있으며 暗褐黑靑色을 띠었다. 4. 白血球의 數는 S.N의 注入으로 7,000∼11,000(正常値)에서 13,575로 急增加 하였으나 時日이 經過함에 따라 正常으로 復歸가 되었다.(13,575→9,500) 5. 完全去勢보다 部分去勢가 增體에 效果的이라는 것에 一致된 것 같다. To investigate the effect of Silver Nitrate solution on the testis and the body weight in male rabbit, this experiment was carried out and used thirty six White-Japeness Rabbits, which were 4to5 months old, as experimental animal. Those animals were assigned into 9 groups of 4 rabbits, and these groups consited of three control groups and three groups with 1%, three groups with 5% silver nitrate solution which injected 0.5ml into the testis tissue of these male rabbits. The results obtained summarized were as follows; 1. The growth and the body weight gain showed no significant effect in all the groups. 2. In the changes of the external testes, showed expending testes in 2 days after injection and then constructing in all the groups with the exception of control groups. In groups with 5% S.N.solution, however, most of testes were disappeared in 20 days after injection because of necrosis of internal testis tissue. 3. It seemed that the internal testis tissue restored in the groups with 1% S.N.solution as time goes by, but appeared the necrosis of the internal testis tissue in the groups with 5% S.N.solution. 4. Nos. of leucocyte were increased after injection of S.N.solution and then restored with the passage of time. *S.N:Silver Nitrate.