서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we 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 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

밤나무 小枝에 있어서 梢頭部와 下端部의 耐凍性의 差異

趙台煥,洪性珏 건국대학교 1978 學術誌 Vol.22 No.1

Freezing resistance of winter bud and xylem at each tip, middle and base portion of current year twigs of 32 chestnut cultivars was measured on October 30, December 1,1977 and January 10, 1978. The bud and xylem collected on October 10 and bud on December 1, 1977 did not show consistant difference in freezing resistance among tip, middle and base portion of the twigs. Freezing resistance of the xylem collected on December 1,1977 and January 10,1978 was in order of tip, middle and babe portions from highest to lowest in most cultivars of chestnut. The importance of lower freezing resistance of the base portion than the tip was discussed to determine cold resistant cultivars and grafting methods of chestnut.

LASER(CO₂)光에 依한 各種 子宮頸部質患의 治療에 關한 臨床的硏究

趙基煥,丘秉參,洪性鳳 고려대학교 의과대학 1989 고려대 의대 잡지 Vol.26 No.1

Patients with various cervical lesion in 568 cases were treated using CO₂ Laser. The clinical results of this treatment are as follows. 1. Indications for treatment with CO₂ Laser showed the following distributions: 398 cases of cervicitis and/or ulcerative erosion, 23 cases of polyp, 4 cases of myoma, 116 cases of CIN, 8 cases of condylome, 3 cases of endometriosis, 5 cases of stenosis, and 11 cases of inclusion cyst. 2. The age distribution of the patients treated with CO₂ Laser ranged front 20 to 67 years. The peak incidence of the patients with CIN was in the fourth decade (38.8%), and ranged from the third to sixth decade. The parity distribution was as follows: nullipara, 9.5%; para one, 19.8%; and the highest incidence, 42.2% was recorded for women with a parity of three or more 3. The duration of healing after CO₂ Laser treatment varied slightly according to the disease and extent of tissue evaporation. The mean healing time was 3 to 4 weeks for cases of superficially evaporated wounds, however, the healing process was delayed up to 4-6 weeks in deeply evaporized wounds. The healing of very shallow wounds, like simple polyp excision, was rapid (2-3 weeks). 4. The vaporized wound surface, particularly in CIN, was covered with thin, gray-whitish necrotic tissue completely within post-treatment 2nd day, and the vaginal discharge was increased significantly. The amount of vaginal discharge was progressively reduced after 90 hours. The necrotic eschar began to disappear from the vaporized surface partially, and the discharge was reduced remarkably with the growing out of granulation tissue after 7 to 10 posttreatment day. Squamous metaplasia showed up after a full 2 week posttreatment period and the vaporized area became smooth and was completely covered by regenerated epithelium. 5. Amoag the total 116 CIN cases, 67 cases (58%) were class Ⅰ, 37 cases (32%) were class Ⅱ, and 12 cases (10%) were Class Ⅲ. The lesions were vaporized more deeply (33%), if they were located in the cervical canal or if the grade was severe. 6. During the follow up period of 36 months in CIN cases, treatment failure confirmed by cytologic examination in class Ⅰ was 2 cases, in Ⅱ and Ⅲ were 3 respectively. Retreatment with Laser was performed in 4 (1 in class Ⅰ, 2 in Ⅱ and 1 in Ⅲ) of the 8 initially failed casea, and others were treated surgically. 7. The success rate for CO₂ Laser therapy in various cervical lesions was 94.8% (recurred in 5.2%). The treatment success rate for CIN cases was 91% (Grade Ⅰ; 98.5%, Ⅱ; 91.5%, and Ⅲ; 83.3%). 8. Time required for the operative procedure varied depending on the physician, his experience, and the extent or location of the lesions. Except for Laser conization or hemorrhagic lesions, 5 to 10 minutes were enough to complete the therapy in the majority of cases (70%), 15 to 20 minutes were required in 20% of cases, and rarely required more than 25 minutes in unusual cases of conization or severe hemorrhagic lesions. 9. No specific anesthetics and analgesics were necessary in the majority of cases. Intravenous analgesics were used in 15 cases, and general anesthesia was needed (3 cases) in some cases of Laser conization. The percentage that needed any type of analgesics including local infiltration or nerve block with local analgesics, or intravenous pethidine was 8%. 10. There were no major complications. 8 cases (1.4%) of mild to moderate bleeding and 3 cases (0.5%) of infection were reported, and a mild degree of local or lower abdominal discomfort was the chief complaint in 3.2% of patients. However, no blood transfusion or hospitalization were necessary. 11. Laser therapy for various cervical lesions has many advantages compared with other surgical modalities (electrocautery, cryosurgery, or cold conization etc.) that is, simplicity in performance, accurate application, both with regard to site and depth, and rapid healing process. These results indicate that the CO₂ Laser therapy, when performed by a well trained and experienced physician, is an effective modality in the management of various cervical lesions.

대명천 유수지의 식생유형 및 생태적 특성에 관한 연구

조현제,오승환 대구산업정보대학 2001 논문집 Vol.15 No.-

The present vegetation established on Daemyongcheon wetland, were studied phytosociologically, with special reference to its ecological conservation and management. Vegetation types of this area were classified into two higher units(community level), six lower units and five lowest units, giving twenty management areas. Phragmites communis occupied the highest ecological niche. The species diversity(H'), the evenness(J') and the maximum of species diversity(H'max) were showed 3.03±0.38, 0.90±0.06 and 3.42±0.52, respectively. According to the constancy diagram of the component species, the lower classes(< I) have 84.5% in the plant species occurring to this area and the higher classes(> III) only 3.6%. The ratio of naturalized plants showed 40%, which was much higher than the nearby wetland(Dalseong wetland 19.4% and Daelim wetland 15.3%).

면역학적 특성에 따른 yeast cytochrome c의 구조에 관한 연구

조경환,우기민,조만희,이상한,박현경,김창세 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2

The antiserum against yeast cytochrome c and horse heart cytochrome c was reacted immunologically with those from various species. The results were as followings; 1. The antiserum against horse heart cytochrome c was reacted immunologically with heart cytochrome c of horse, cow, rabbit, mouse, chicken, pigeon, frog, tuna, and guanaco, and were not with yeast and neurospora cytochrome c. 2. However, antiserum against yeast cytochrome c was only reacted immunologically with yeast cytochrome c, and was not mammals and vertebrates horse, cow, rabbit, mouse, chicken, pigeon, frog, tuna, guanaco, even neurospora 3. CNBr-digested peptides of horse heart cytochrome c were obtained 5 peaks, Ⅰ(1-80), Ⅱ(1-65), Ⅲ(66-104), Ⅳ(81-104), Ⅴ(66-80), and other peptide (1-50). Among them peptides Ⅰ and Ⅱ were weakly reacted immunologically with antiserum against horse heart cytochrome c. CNBr-digested peptides of horse heart cytochrome c were not reacted with antiserum against yeast cytochrome c. 4. From the above, the immunologically positive cross reaction was thought to be related with Ω loop D.

저속 음성 코덱을 위한 효율적인 LSF 양자화기 설계

조인환,강상원 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1

본 논문은 LPC계수의 효율적인 양자화기에 대한 연구로서, LSF 계수의 프레임간 높은 상관도와 예측 에러 신호의 기하학적 성질을 이용한 predictive pyramid vector quantization(PPVQ) 방식을 제안한다. LSF 계수의 예측을 위해 weighted distortion measure를 이용하여 설계한 4차 moving average(MA) 예측기틀 사용하였고, Laplacian 분포를 가지는 예측 에러 신호의 효율적인 양자화를 위해 pyramid VQ(PVQ)를 이용하였다. PPVQ는 적은 계산량으로 23 bits/frame에서 transparent한 성능을 가진다. 또한 PPVQ는 계산량이 적으며 코드북 저장을 위한 메모리를 전혀 필요치 않는다. In this paper, the predictive pyramid VQ(PPVQ) is proposed to quantize LSF parameters. The properties of the LSF parameters, whose prediction error signal is Laplacian and interframe correlation is high, are exploited. To predict the LSF parameters, 4th order moving average (MA) predictor is used, and to quantize the prediction error signal, the pyramid VQ (PVQ) is exploited. It is verified that the performance of PPVQ has the transparent quality at 23 bits/frame. PPVQ requires low complexity and does not need any memories for the codebook storage.

비특징 기반의 차량 번호판 인식

조보호,정성환 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-

In this paper, we propose a nonfeature-based method to recognize vehicle plate characters. Previous feature-based requires complex preprocessing on a vehicle plate area. The problems of these approaches are the plate binarization process which causes distorted characters and difficult feature vector extraction. In the proposed method, we simplify the previous complex preprocessing. We also use the location information of characters in the vehicle plate area and the color intensity difference between the character region and the background region in the vehicle plate area. Our method then directly recognizes the extracted character region by using ART2 neural network. We perform experiments with extracted 77 vehicle image under various lighting condition. In the experimental results, our proposed method is not sensitive to the lighting condition. It also shows about 92%, 0.1 sec in terms of the total recognition rate and the recognizing time, respectively.

液體膜에 의한 Benzene과 n-Hexane 混合物의 分離에 있어서 界面活性劑가 미치는 影響

趙成煥,鄭泰秀 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1

In the separation of benzene-n-hexane mixture by emulsion liquid membrane in a batch system, the effect of surfactants on the separation factor and the percentage of membrane breakup were investigated over the surfactant concentration ranging from 0.1 to 1.5 wt% at the contact time of 5 and 10 mimutes and the settling time of 5 and 10 minutes. The surfactants used were sodium lauryl sulfate, sodium laurylether sulfate and triethanolamine lauryl sulfate. The separation factor reached its maximum value at the surfactant concentration of 0.5 wt% for all surfactants. In general sodium laurylether sulfate showed larger separation factor than the other two surfactants. The separation factor reached its maximum value at the contact time of 5 minutes for sodium lauryl sulfate and sodium laurylether sulfate and 10 minutes for triethanolamine lauryl sulfate. It was found that the percentage of membrane breakup reached its minmum values and the separation factor showed its maximum values at the surfactant concentration of 0.5 wt% for all three surfactants, which confirmed that efficient separation could be effected when emulsion liquid membranes were stable because of their low membrane breakup.

진성다혈구증에서의 심근 및 뇌경색증 1예

조영호,유벙전,서영환,조경상,김상도,정춘해 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.2

Polycythemia vera is one of the myeloproliferative diseases, and as such, is an example of clonal hematopoiesis. The progeny of a single, abnormal, hematopoietic stem cell gain a grwoth advantage over their normal counterparts resulting in overproduction of red cells generally accompanied by overproduction of granulocytes and platelets as well. There are a variety of nonspecific symptoms at onset related to the increased red cell mass and hematocrit accompanied by the more specific manifestations of pruhtis, erythromelalgia, and hepatic, portal, and mesenteric vein thrombosis. Splenomegaly and hypertension are common. Thrombosis and leukemia are frequent complication in polycythemia vera and are associated with severa organ damage and a high mortality. We report here the case of occurrence of myocardial and cerebral infarction in a patient with polycythemia vera.

大防風湯의 鎭痛·消炎 및 解熱作用에 대한 實驗的 硏究

曺上煥,鄭錫熙,李鍾秀,金性洙,申鉉大 경희대학교 1989 慶熙醫學 Vol.5 No.3