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고등학교 「생활과 윤리」 교육과정 내용체계에 대한 윤리교사들의 인식 분석 - 부산지역 윤리교사의 중요도-실행도 분석(IPA) -
김홍수,조수경 한국윤리학회 2022 倫理硏究 Vol.139 No.1
The purpose of this study was to explore perceptions that ethics teachers of high school have about content system of 2015「Life and Ethics」curriculum for high school education, and implications of the perceptions. For the purpose, the study investigated how much those teachers think of that content system as important and how high it is in performance at actual class by using the techniques of Importance Performance Analysis(IPA) in SPSS. Through the investigation, this study could obtain the following findings. First, among contents which make up the above mentioned system, ethics teachers perceived that 'society and ethics' is highest in not just importance, but also performance. Second, when it comes to importance of those different parts under the content system, ethics teachers stated that 'society and ethics' and 'life and ethics' are most significant, 'culture and ethics' and 'science and ethics' least significant, and 'peace ad ethics' moderately significant. Third, this research with ethics teachers as its participants revealed they perceive that among areas of the content system, 'society and ethics' is strongly maintainable since it is a content that is high in importance as well as performance. While, they thought that 'peace and ethics', 'life and ethics', 'science and ethics' and 'modern life and practical ethics' are contents of high importance but low performance so that they should be improved. Furthermore, the teachers considered 'culture and ethics' as other content that is low in both importance and performance. And fourth, an IPA matrix analysis on the components of the content system discovered that ethics teachers perceive some components as high in both importance and performance only when they have been more frequently asked in the form of more difficult questions at the college entrance exam.
급성 B형 간염 환자에서 HBsAg / 1gG 면역복합체 측정의 의의
김홍수,이문호,김선주,황성규,양동호,박필원,박상흠,정일권,홍세용,박종면 대한소화기학회 1998 대한소화기학회지 Vol.32 No.1
Backgrounds/Aims: HBsAg/IgG immune complexes (ICs) have been found in patients with hepatitis B virus (HBV) infection. To understand the immunologic process in patients with acute viral hepatitis (AVH) B, HRsAg/IgG ICs were quantified. Methods: We serially quantified HBsAg/IgG ICs in patients with AVH B by ELISA method (Ag-specific), Results: The ICs were detected in 6 out of 9 cases of AVH B with wide quantitative range from 24 ng/mL to 2,251 ng/mL. In the two cases of high ICs, the ICs were measured as 2,251 ng/mL in the 1st week and 540 ng/mL in the 3rd week. In 4 cases, ICs were detected in relatively low titers from 24 to 186 ng/mL. In all the 6 cases of HBsAg/IgG ICs positive, anti-HBs was all negative, and HBcAb was all positive. In 5 out of the 6 cases, HBsAg was positive. The appearance of ICs was not correlated with the level of serum SGPT or the duration of liver function recovery. Conclusions: HBsAg or anti-HBs were present as HBsAg/ IgG ICs during acute phase of AVH B, in which HBsAg or anti-HBs were not detected by conventional radioimmunoassay (RIA). The HBsAg/IgG ICs could be the viral marker complementing eonventional RIA as qualitative method. The quantitive measurement of HBsAg/IgG ICs might provide better understanding of the immunologic process of AVH B.
만성 B형 간염환자에서 인터페론 치료 후 간 조직검사 소견의 변화와 Tumor Necrosis Factor의 임상적 의의
김홍수,윤동진,김은주,정일권,박상흠,이문호,김선주 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2
Background: Interferon has been widely used in the treatment of chronic hepatitis B, but its effectiveness is debatable. The clinical indices as the loss of HBeAg, HBV DNA, and improvement of liver function are applicated to identify the effectiveness of interferon therapy, but the mechanism of hepatohistological change is not well known. We investigated the changes of histologic finding and plasma tumor necrosis factor(TNF) in the patients with chronic hepatitis B after treatment with interferon-alpha. Methods: 11 patients with chronic hepatitis B who had treated by interferon-alpha were enrolled for this study. Liver biopsy was done before and after treatment of interferon and plasma TNF was evaluated at the same time. A semiquantitative study using a histologic scoring system was applied on pre and post liver biopsy specimens and the changes of HBeAg and HBV DNA were also evaluated. Results: Among subjects, the response group, recurrence group, and non-response group based on serologic response with clearance of HbeAg were6, 3, and 2 patients, respectively. The changes of serum ALT level and HBV DNA titer on pre and post therapy decreased significantly in the response group. The change of mean plasma TNF level in the response group decreased insignificantly to 19.4 from 19.9. The histological improvements of grading and staging were shown 4 patients in the response group. Conclusions: Serologic response with clearance of HBeAg was associated with histolofical improvement. The loss of HBsAg in the serum was significant indicator of reduction in the amount of HBV core antigen and HBV surface antigen in the hepatocytes. Plasma TNF level was not associated with response of interferon-alpha therapy and histologic activity.
김홍수 한국결정성장학회 1999 韓國結晶成長學會誌 Vol.9 No.1
PANrP 탄소섬유의 고온연신에서의 변형 거동을 검토하기 위해서, 일정 하중하에서 내부저항 가열법에 의해 $1200^{\circ}C$부터 $2200^{\circ}C$까지 열처리 온도를 변화시키며 섬유의 strain 변화를 측정하였다. 부하된 응력이 증가함에 따라서 strain 변화가 크게 발생하며 또한 열처리 온도 약 $1700^{\circ}C$를 경계로 해서 그 온도 이상과 이하 사이에는 큰 차이를 보였다. 각 응력에 있어서의 strain 속도 변화로부터 얻어진 활성화 에너지는 70 MPa 및 322 MPa에 대하여 각각 67.46 및 52.27 kJ/mol로써, 큰 응력의 경우가 작은 응력을 부하하는 것 보다 섬유구조 발달에 있어서 더욱 효과적이라는 것을 알았다. Polyacrylonitrile(PAN)-based carbon fiber tows were heat-treated by the internal resistance heating method under the certain load. To consider the strain behavior of the fiber tows during heat-treatments, 1200~$2200^{\circ}C$, strain changes of those were measured. It was observed that the larger longitudinal strain was induced under the larger stretching stress. The changes in the strain are different from the temperature regions below and above $1700^{\circ}C$. Obtained apparent activation energies under the stretching stresses of 70 and 322 MPa from time-strain curves were 67.46 and 52.27kJ$mol^{-1}$, respectively. Therefore, it was known that the larger stretching stresses effectively reduce the apparent activation energy of the fiber structure development of the fiber tows.
사구체 신염 환자들에게 말초혈액 단핵세포의 Cytokine들의 유전자 발현에 대한 ACE Inhibitor의 영향
김홍수,김상돈,이한민,김승정,마경애,신규태,지석배,김도헌 대한신장학회 1999 Kidney Research and Clinical Practice Vol.18 No.1
Angiotensin II(ANG II) has been known to induce systemic and glomerular hypertension, which leads to renal tissue injury and progressive fibrosis of kidney. Some effects of ANG II may be mediated by its effect on the cytokine synthesis. In the present study, we investigated the effect of ANG II inhibition on the expression of various cytokines implicated in the pathogenesis and progression of the kidney disease. Blood samples of 11 patients with glomerulonephritis were obtained before the ACE inhibitor therapy and then while they were taking ACE inhibitors. Using peripheral blood mononuclear cells(PBMC) harvested from the samples, RT-PCR was performed to evaluate the changes in mRNA expression of TGF-β1, IL-6, TNF-α and IL-10. The ratios of target cytokines and β-actin were calculated. TGF-β1 mRNA expression was decreased in five pat ients after ANG II inhibition with ACE inhibitors, while it was increased in the remaining six patients. ACE inhibitors consistently decreased IL-6 mRNA expression in all 11 patients. IL-10 expression was decreased in 4 patients, and increased in 3 patients after ANG II inhibition. It was not expressed in 4 patients. TNF-α expression was increased in 8 patients, and decreased in only 1 patient. In two patients, it was not changed while on ACE inhibitors. Conclusion:ACE inhibitors attenuate IL-6 expression consistently in all 11 patients. This is the first-time demonstration of the in vivo inhibitory effect of ACE inhibitors on IL-6 mRNA expression in humans. The lack of significant suppression of TGF-β1 in PBMC suggests that the in vivo attenuating effect of ACE inhibitors on TGF-β1 may be derived from renal hemodynamic changes. The tendency of heightened expression of TNF-α confirms the previous investigations in which IL-6 was shown to down regulate TNF-αexpression.