서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

오스템퍼링한 구상흑연주철(ADI)의 드릴 가공시 경도 및 현미경조직변화에 관한 연구

조규재,장우양,심재기,홍성오,김선진 한국공작기계학회 1999 한국생산제조학회지 Vol.8 No.1

This paper was carried out to know the influence of advanced austempered ductile cast iron (ADI) on the tool life and mechanical properties of drilling machinability. For manufactured method of ADI, the spheroidal graphite cast iron were austenized at 900℃ for 1 hour and then austempered for 2 hour at 370℃ in the salt bath. And interrelationship has been investigated between tool life and mechanical characteristics of specimen material on drilling condition when the ordinary and step-feed drilling are carried out to drill holes of specimens. Tensile strength and hardness of ADI decrease and elongation of ADI increases with the increase austempered temperature. It is known that about 2 times of tool life in the case of step-feed decreases compared with ordinary feed due to the high hardness of ADI and hardness ascribed to the fact that retained austenite beame to martensite state due to cutting heat in drilling. Under the constant feed rate 0.1㎜/rev relation between hardness and length of end tip after drilling can be formularized to Hv=788.46L^-0.096 for the cutting speed 6.1m/min.

IIIB 병기 비소세포 폐암의 방사선치료 성적

조문준,박승호,김재성,김선영 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

To evaluate the effect of radiation therapy in nonsmall cell lung cancer stage IIIB, we analyzed the 23 patients diagnosed NSCLC IIIB and treated curatively with radiation therapy between September 1989 and March 1993 at the department of therapeutic radiology, Chungnam National University Hospital, retrospectively. The actuarial 1 year survival rate was 39.2%, 2 year survival rate was 2.3%, and median survival time was 10 months. The difference of survival rates by performance status, response to radiotherapy, T stage, N stage, tumor size, age, pathologic cell type, combination with chemotherapy was not statistically significant. To increase the survival time and rate of the patients with NSCLC IIIB, further study for adequate radiation fractionation and dose, combination with chemoherapy and surgery will be needed.

잔디 생육에 대한 미량원소의 효과

조현종,진선재,정종배 대구대학교 생명과학연구소 2002 생명과학연구 Vol.1 No.2

미량원소 복합비료의 처리에 따른 한국 들잔디의 생육에 미치는 효과를 조사하였다. 미량원소 복합비료는 0,6.7 및 11.2 kg/10a의 3수준으로 처리하였으며, 시비 후 2주 및 4주 째에 각각 생육, 토양과 잔디 잎중의 유효태 미량원소의 함량 및 잎중의 엽록소 함량을 조사하였다. 미량원소 복합비료의 처리로 토양과 잔디 잎중에서 유효태 미량요소 함량중에서 Fe와 Zn 함량이 표준구와 배비구에서 증가하였으며, 토양중 Cn 함량은 배비구에서만 증가하였다. 잔디 잎중에서 Cu와 Mn의 함량은 4주째에 배비구에서 유의성 있는 증가를 보였다. 잔디 잎중의 엽록소 함량은 2주 및 4주째에 무비구에 비하여 표준구와 배비구 모두에서 증가하였으나, 표준구와 배비구의 엽록소 함량 차이는 유의성이 없었다. 잔디 생육은 무비구에 비하여 미량원소의 처리로 통계적으로 유의성 있는 증가를 보였으며, 표준구와 비교하여 배비구에서 생육이 증가하였으나 유의정은 없었다. 미량원소 복합비료의 처리로 토양중의 유효태 함량이 증가함에 따라 식물 체내 이들 미량원소 함량이 증가하고 이는 식물의 과합성을 비롯한 체내 대사과정을 촉진함으로써 잔디의 생육뿐만 아니라 색상을 향상시키는데 효과를 거둘 수 있을 것으로 판단되었다. This study was conducted to evaluate the effect of micronutrients on the growth and chlorophyll content of turfgrass. The STEP HiMag, micronutrient fertilizer, was applied on turfgrass field in Daegu University at three different rates, 0, 6.7 and 11.2 ㎏/10a. Available micronutrient (Fe, Mn, Cu, and Zn) content in soil and turfgrass blade and chlorophyll content and growth of turfgrass were measured 2 and 4 weeks after the fertilizer application. Content of the available micronutrients in soil was significantly increased by the application of micronutrient fertilizer and also the nutrient content in turfgrass blades was increased. Chlorophyll content was significantly higher in the turfgrass blades treated with the fertilizer in comparison to the control treatment (P>0.05). The average growth of turfgrass was higher in the plots of micronutrient fertilizer, and the growth was significantly different (P>0.05). The results of this study demonstrate that fertilization of essential micronutrients is necessary in sandy soils of turfgrass land and can improve the turfgrass growth.

시분할 방식 고주파 공진 인버터의 특성해석

조규판,원재선,김동희,노채균,배영호 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.1

In this paper, we propose the high frequency resonant inverter of the time sharing type which has the effects that the duty cycle of each elements and the thermal loss can be reduce. The analysis of the proposed circuit is described generally by using the normalized parameters. Also, the principle of basic operation and the characteristics of drive were estimated by the switching frequency and the load parameters. And we got the data for designing by the characteristic values obtained at the estimate of characteristic. At the same time, the example of the design's method was proposed and the waveforms of simulation were compared with theoretical waveforms. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.

Phase-Shift를 이용한 시분할형 부하병렬 고주파 인버터의 특성해석에 관한 연구

조규판,원재선,김동희,노채균,원규식,심광열 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.2

A half bridge time sharing type load parallel high frequency resonant inverter to give VVVF function in the inverter used as power source of induction heating at high frequency is presented in this paper. This proposed inverter can reduce distribution of the switching current because of using the current of serial resonant circuit to the input current of the parallel one and this paper also realize the output control of independence irrespective of the switching frequency using Phase-Shift. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of basic operation and the its characteristics are estimated by the parameters, such as switching frequency, the variation of phase angle(φ) of Phase-Shift. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.

STD-11 와이어 컷 방전가공시 가공조건에 따른 북현상 고찰

조규재,김선진,조상현,김훈희 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.2

From the experimental study of W-EDM for alloyed steel STD-11, the characteristics such as Hand Drum Form and surface roughness have been observed and evaluated for various conditions. In square hole, the increase of IP as to made condition, the calculate high value of surface roughness. Also compare dimensionless square hole with circle hole' graph. In circle hole, if a value of surface roughness IP 6 in a side of circle it show a 0.4㎛ and in IP 8, 0.6㎛, in IP 10, 0.7㎛, in IP 12, 0.8㎛ higher than before. This figure show the surface roughness is higher than before, because a table move in either X-axis or Y-axis in square hole, on the contrary, in circle there table move in X-axis and Y-axis at the same time, hand drum form getting small when wire tension increase 1000gf to 1500gf, at the same working conditions, the smaller of off time, the maller of hand drum form in same condition and same wire tension. but if you compare square hole with circle hole' graph, hand drum form displayed in maintained term of working condision, on the contrary, in case of square hole variation of hand drum form is more increase than a grow of IP

마늘첨가가 김치의 숙성 및 품질에 미치는 영향

조현경,박소희,조재선,정청송 한국식생활문화학회 2001 韓國食生活文化學會誌 Vol.16 No.5

마늘이 김치의 숙성과 품질에 미치는 영향을 조사하고 아울러 cyclodextrin과 sorbitol의 마늘냄새 masking효과를 실험하였다. 김치 숙성 초기의 산도는 마늘 첨가량이 많을수록 대조구에 비해서 높았고 환원당 함량은 마늘 첨가량이 많을수록 높았으나 숙성말기에는 거의 비슷한 수준을 유지하였다. 미생물의 경우 숙성초기에는 마늘 첨가에 의해 성장이 촉진되었으나 이후에 그 수준을 유지한 후에는 대조구에 비해서 오히려 억제되었다. 관능 검사 결과는 온도에 관계없이 마늘을 첨가하지 않은 김치가 모든 관능적인 면에서 유의적으로 나쁘게 평가되었으며 마늘을 2∼3% 첨가한 김치가 유의적으로 가장 좋게 평가되었다. Cyclodextrin 또는 sorbitol을 1%씩 첨가한 결과 마늘맛을 masking 하는데는 효과가 없었고 관능적으로도 나쁘게 평가되었다. This study was conducted to investigate the effect of garlic on the fermentation and organoleptic quality of kimchi. For this study, changes in pH, acidity, reducing sugar content and microbial count of kimchi during fermentation were tested and sensory test of fermented kimchi was also conducted. The acidity of kimchi with garlic was increased rapidly more than control kimchi at early stage of fermentation. Though the reducing sugar content was higher in kimchi with garlic than control kimchi, but that of all samples were almost same at mature stage of fermentation. Total bacteria and lactic acid bacterial counts were higher in kimchi with garlic than control kimchi at early stage of fermentation, but those were reversed at final stage of fermentation. By the result of sensory test, garlic was contributed to taste and aroma positively at level of 2∼3g garlic to 100g of kimchi.

대전지역 공중화장실의 실태조사 및 설비개선에 관한 연구

조병선,장재영 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

As for the general review of toilet in the Daejeon metropolitan city, it found that 'Good' evaluation took 28% of them, and 'Bad' 72%. In terms of the place, the evaluation of general hospital toilet and public office were excellent. On the other hand, it found that the evaluation of toilet in the resort and beach were relatively low. The public toilet is considered as a scale that explains the countries' cultural level directly. It seems to be a standard of cultural architecture in the countries. After all, it needs to convert the concept of toilet as a space of toilet as a space of citizens' consciousness level and cultural level as well as a space of solving the physiological desire simply.

Ranitidine, Sucralfate, Bismuth Subcitrate 복합제의 흰쥐 위궤양에 대한 치료효과

조태순,조광재,주일로,이선미,유영효 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.1

Gastric ulcer disease results when there is an imbalance between aggressive factors(acid secretion) and protective factors(mucosal defence). H_2-receptor antagonists are the most frequently used agents for treatment of gastric ulcer disease. However, use of these products should be determined by potential for adverse effects, drug interactions and cost. Ranitidine, H_2 - receptor antagonist, competitively block the H_Z-receptor on the parietal cell, causing inhibition of gastric acid secretion. Sucralfate and bismuth subcitrate coat ulcer craters and then enhance mucosal defence. Bismuth subcitrate also causes detachment of Helicobacter pylori from the gastric epithelium with subsequent lysis of the bacteria. To estimate effects of the mixture of ranitidine 20mg/kg, bismuth subcitrate 40mg/kg and sucralfate 120mg/kg on aspirin - HCl induced gastric ulcer in rats, gastric ulceration, pH, gastric secretion, free and total acidity, pepsin activity, gastric mucosal hemorrhage were investigated. Results obtained were as follow : 1) The mixture showed remarkable suppression of gastric ulceration, pH, gastric secretion, free and total acidity, pepsin activity, gastric mucosal hemorrhage compared with ranitidine alone. 2) With elapse of time, the mixture showed more increasing inhibitory effects on gastric ulceration, pH, gastric secretion, pepsin activity, gastric mucosal hemorrhage than sucralfate and bismuth subcitrate.