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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.
정신분열병 환자에서 Olanzapine이 인지기능에 미치는 영향
강병조,김양태,김문두,이승재,박영우 대한생물치료정신의학회 2001 생물치료정신의학 Vol.7 No.1
Objects : The purpose of this study was to test the effects of olanzapine on cognitive functions in schizophrenic patients. Methods : The subjects were 16 haloperidol-medicated schizophrenic patients and 15 risperidone-medicated schizophrenic patients, who participated in an eight-week crossover study from haloperidol and risperidone to olanzapine. Results : The patients in the group of crossover from haloperidol to olanzapine showed significant improvement in Parkinson scale of ESRS and other cognitive functions except for verbal fluency. Negative scale of PANSS and cognitive functions such as verbal memory, verbal fluency, visual memory and executive function were significantly improved in patients In the group of crossover from risperidone to olanzapine. Conclusions : These data suggest that olanzapine has some superior cognitive benefits relative to haloperidol and risperidone, but a larger sample replication study is necessary.
강성창,박재승 한국의료복지시설학회 2003 의료·복지 건축 Vol.9 No.2
Terminal cancer patients in Korea have increased due to the development of technology and the structural change of diseases resulted from life quality improvement. Following this trend many hospitals are making efforts, such as renovating hospice wards, but architectural criteria are not sufficiently suggested for specialized hospice wards. The purpose of this study is to present the research data to improve the quality of hospice ward in general hospital Data collecting skills such as drawing documents analysis, observation were used to examine the condition of hospice ward. And, case study method was used to generate the design data which can be used for the appropriate spatial composition and the area calculation.
Zn를 첨가한 고온초전도체 Y Pr Ba₂Cu₃O 의 Raman 분석
강재필,김성재,박현진,노태호,송승기,박영민,전인 明知大學校 自然科學硏究所 1997 자연과학논문집 Vol.15 No.-
고온초전도제 Y Pr Ba₂Cu₃O 에 Zn를 첨가(x=0.00, 0.05, 0.10, 0.15, 0.20)하여 전이온도 측정, X-ray회절 실험과 Raman 실험을 하였다. Raman 측정결과 다섯 개의 시료가 일반적인 YBCO 초천도체의 Raman 스펙트럼에서 존재하는 다섯 개의 대칭활성모드(115cm¹,150cm¹.340cm¹,440cm¹,504cm¹)가 관측되었다. 이것은 Cu 와 관련된 대칭활성모드의 주파수가 모두 저주파 변위를 나타내어 Zn가 Cu(1)과 Cu(2)에 치환되었음을 의미한다. 저주파 변위 정도는 Zn에 거의 무관했으나, Raman 스펙트럼의 각 피이크의 선폭은 치환된 Zn에 의해 증가했다. 이 결과는 Zn가 Cu자리에 어느 한계 이상은 치환되지 못하고 시료 내에서 불순물상을 형성함을 나타내는 것이다. We measured transition temperature, X-ray diffraction pattern and Raman spectra of Zn added(x=0.00, 0.05, 0.10, 0.15, 0.20) high-T superconductor Y Pr Ba₂Cu₃O All samples have been observed five symmetric activity modes(115cm,150cm¹.340cm¹,440cm¹,504cm¹)which exist in Raman spectrum of general YBCO superconductor. This means Zn is substituted for Cu(1) and Cu(2) due to the fact that symmetric activity mode frequency related with Cu shows low-frequency shift. The degree of low-frequency shift was nearly independent on Zn but line width of Raman spectra peaks were increased by the substituted Zn. This results shows that Zn does not be substituted for Cu-site more than limit value and formes impurity phase in the sample.
강주환,문승록,박선중,정재웅 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-
This study was performed to predict some aspects of tidal currents and pollutant dispersion according to the facilities for seawater exchange in order to improve the water quality in Daeheuksando. A numerical simulation was executed, using the hydrodynamic module and advection dispersion module in MIKE 21 program. As a result of hydrodynamic simulation, it did not show change greatly in all cases. But, cutting part of Jungang-breakwater increased greatly than other area. When cut inside part in Jungang-breakwater, pollutant density of Yeri area decreased greatly by the ratio of 0.40 as compared with other cases. Also, dispersion extent diffused whole area of inside sea area of Daeheuksando. This case is the most effective for seawater exchange inside sea area of Jungang-breakwater.
Cu 촉매하에서 유기주석 화합물과 고분자에 결합된 Iodide의 Cross-Coupling 반응에 관한 연구
강석구,임권호,김재선,윤석근,윤승수 성균관대학교 기초과학연구소 1996 論文集 Vol.47 No.2
The copper iodide-catalyzed cross-coupling of polymer bound aryl iodide with organostannanesin N-methyl-2-pyrrolidone (NMP) was accomplishied smoothly in the presence of NaCl.
77K와 상온에서 CO(NH₂)₂의 ¹⁴N Pulsed NQR 연구
강재필,박영민,전인,김성재,최숙자,박현진,송승기,서용문 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.13 No.-
77K와 상온에서 CO(NH₂)₂분말 시료의 ??N Pulsed NQR실험을 하여 위와 아래 공명 진동수, 핵 사중극 결합상수, 비대칭 인자, 스핀-스핀 완화시간, 결정 격자 진동에서의 평균 비틀림 진동수, 진동자의 관성 모먼트 등을 구하였다. 공명 진동수의 온도 의존성은 전형적인 Bayer이론의 격자 진동에 의한 주파수 변화를 보였다. Bayer-Kushida이론의 고온근사식을 실험값에 적용하여 OK에서 공명 진동수 ν??와 ν??를 구했으며, 77K와 상온에서의 스핀-스핀 완화시간 T₂를 관측했다. 상온에서 T₂의 감소는 결정 내의 reorientation motion과 관련이 있을 것으로 보인다. Upper and lower resonance frequencies, nuclear quadrupole coupling constants, asymmetry parameters, spin-spin relaxation time, average torsional frequency in the crystal lattice motion and moment of inertia in the oscillator are found for CO(NH₂)₂powder sample by using ??N Pulsed NQR(Nuclear Quadrupole Resonance) technique at 77K and room temperature. Temperature dependence of resonance frequencies showed frequency variation in agreement with the typical Bayer's theory in lattice motion. Resonance frequencies ν?? and ν?? at OK were obtained by fitting the high temperature approximation of Bayer-Kushida theory to the experimental data and spin-spin relaxation time (T₂) was observed at 77K and room temperature. Decrease of T₂at room temperature was explained by the effect of reorientational motion in the crystal lattice.
변압기 보호를 위한 Fuzzy Decision Making 알고리즘
강대훈,이승재,강상희,권태원 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-
This paper presents a new fuzzy decision making algorithm for power transformer protection based on the Dempster-Shafer's theory of evidence. To distinguish internal faults from other transient states, four input variables are selected. Each time dependent fuzzy rule base is composed of twelve fuzzy if-then rules associated with their basic probability assignments (BPAs) for singleton - or compound-support hypotheses. Dempsters rule of combination is used to process the fuzzy rules and get the final decision. The proposed algorithm also has a capability to identify the inrush, over-excitation and external fault with current transformer (CT) saturation besides the internal fault.
Simplified Effective Compressive Strengths of Columns with Intervening Floor Slabs
Seung?Ho Choi,Jin?Ha Hwang,Sun?Jin Han,Hae?Chang Cho,Jae Hyun Kim,Kang Su Kim 한국콘크리트학회 2020 International Journal of Concrete Structures and M Vol.14 No.5
The current design codes discuss the effective compressive strengths of columns, which reflect a decrease in load transfer performance that can occur when columns and slabs have different concrete compressive strengths. The effective compressive strength of a column increases as it is confined by the slab, and the design codes mandate three different effective compressive strengths for interior columns (confinement on four sides), exterior columns (confinement on three sides), and corner columns (confinement on two sides). For both corner and exterior columns, the confinement effect of the slab is significantly smaller than that for the interior column, and there is a more marked decrease in load transfer performance. However, there is still a lack of theoretical studies investigating the effective compressive strengths of the corner and exterior columns. Therefore, based on the analysis model established in previous research, this study has proposed an equation for calculating the effective compressive strengths of the corner, exterior and isolated columns without any confinement effects of the slab. In addition, axial loading tests of isolated columns were conducted and the proposed equation was verified.