http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Kang, Jae Seung,Kim, Ha Na,Jung, Da Jung,Kim, Jee Eun,Mun, Ga Hee,Kim, Yeong Seok,Cho, Daeho,Shin, Dong Hoon,Hwang, Young-Il,Lee, Wang Jae Williams & Wilkins 2007 The Journal of investigative dermatology Vol.127 No.3
It is well known that UVB (290–320 nm) induces inflammation in skin by the transcription and release of cytokines and chemokines from skin keratinocytes. In addition, it is considered that intracellular reactive oxygen species (ROS) plays an important role in UVB-induced inflammatory response in the skin. Therefore, we investigated the effect of vitamin C, a potent antioxidant, on the regulation of UVB-induced skin inflammation via the modulation of chemokines production. Vitamin C uptake into keratinocytes is increased by UVB irradiation in a time- and dose-dependent manner through the translocation of sodium-dependent vitamin C transporter-1 (SVCT-1), a vitamin C-specific transporter, from the cytosol to the membrane. To evaluate the effect of vitamin C on the chemokine mRNA expression, we performed RNase protection assay. As a result, there was a remarkable change in chemokine mRNA expression, especially IL-8 and monocyte chemoattractant protein (MCP)-1 expression. In addition, increased IL-8 and MCP-1 mRNA expressions were suppressed by vitamin C treatment. We also confirmed the results of protein levels measured by ELISA. Taken together, vitamin C uptake is increased in UVB-irradiated keratinocytes through the translocation of SVCT-1 and regulates inflammatory response in the skin via the downregulation of IL-8 and MCP-1 production.Journal of Investigative Dermatology (2007) 127, 698–706. doi:10.1038/sj.jid.5700572; published online 28 September 2006
The optimal duration of ischemic preconditioning for renal ischemia-reperfusion injury in mice
Hyun Su Choi,Jeong Kye Hwang,Jeong Goo Kim,Hyeon Seok Hwang,Sang Ju Lee,Yoon kyung Chang,Ji Il Kim,In Sung Moon 대한외과학회 2017 Annals of Surgical Treatment and Research Vol.93 No.4
Purpose: The aim of the present study was to investigate the protective effects of ischemic preconditioning for different periods of time and to elucidate the optimal safe ischemic preconditioning time for renal ischemia-reperfusion (I/R) injury in mice. Methods: A total of 25 male C57BL/6 mice were randomly divided into 5 groups (sham, I/R, ischemic preconditioning [IP]-3, IP-5, and IP-7 groups), in which the kidney was preconditioned with IP of various durations and then subjected to I/R injury (the last 3 groups). To induce renal ischemia, the left renal pedicle was occluded with a nontraumatic microaneurysm clamp for 30 minutes followed by reperfusion for 24 hours. The effects of IP on renal I/R injury were evaluated in terms of renal function, tubular necrosis, apoptotic cell death and inflammatory cytokines. Results: Results indicated that BUN and creatinine (Cr) levels increased significantly in the I/R group, but the elevations were significantly lower in IP groups, especially in the IP-5 group. Histological analysis revealed that kidney injury was markedly decreased in the IP-5 group compared with the I/R group, as evidenced by reduced renal necrosis/apoptosis. In addition, IP significantly inhibited gene expression of pro-inflammatory cytokines (TNF-α, IL-1β, and IL-6) and chemokines (monocyte chemoattractant protein-1). Western blot analysis indicated that the expression levels of Toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-kB) were upregulated in the I/R group, while expression was inhibited in the IP groups. Conclusion: Five-minute IP had the greatest protective effect against I/R injury.
황대규,오태석,김일환 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.B
This paper describes a design of an induction motor control system using a 2 degree-of-freedom PI controller to compensate the effects of disturbance without degrading tracking performance. On the basis of vector control principle, the control system is simulated by using the ACSL and implemented on a DSP system(TMS320C31). In designing the 2 DOF controller, we can tune the performance of either the tracking or disturbance rejection independently without affecting the other. With the experimental results, the 2 DOF controller has shown a better performance in command tracking and disturbance rejection than a conventional PI controller.
노일호,김병완,정광조,曺政孝,黃相畯,吳旼錫 대전대학교 한의학연구소 2003 한의학연구소 논문집 Vol.12 No.1
This study is about the relationship between the effect of Radiating Qui Therapy on human body and the resulting subjective qui sensation. Patients were between 30 and 50 years of age. n=21 persons received DITI (n=14 patients were provided, n=9 control group) twice examination with Radiating Qui Therapy. First all patients were examined by DITI. After treatment with Radiating Qui Therapy (n=14) both the treated and the control groups were eaxmined again. Radiating Qui Therapy is provided upright position. After Radiating Qui Therapy 92% of the treated group felt a significant qui sensation and 43.5 % felt a warmth at the abdomen and over the whole body. A data of this study show Radiating Qui Therapy has s stimulating effect on human skin temperature. As disease region and Qui sensation are very closely related to each other results strongly suggest that Radiating Qui Therapy could be used as a treatment for a several disease.
Perovskite형 복합산화물 LnCoO_3(Ln=Pr,Nd)의 환원성
박일현,황호순,최원석 성균관대학교 기초과학연구소 1990 論文集 Vol.41 No.1
Nonstoichiometry, thermal stability and reduction reaction of Perovskite-type LnCoO_(3-y)(Ln=Pr, Nd) mixed oxides under static H2 atmosphere were investigated by means of temperature-programmed reduction(TPR) method, X-ray diffraction, Infrared spectroscopy and Scanning electron microscopy. Nonstoichiometry of these mixed oxides were determined as PrCoO_2.94, NdCoO_2.99, respectively. According to kinetic studies, these mixed oxides were revealed that the first reduction stages of LnCoO_(3-y)(Ln=Pr,Nd) oxides were followed by Ginstling-Brounshtein equation indicating three dimensional diffusion of reactant. The second reduction stages were controlled by formation and growth of reaction nuclei via the reaction interface. Activation energies of the first reduction stages of LnCoO_(3-y)(Ln=Pr,Nd) were 22.2, 26.5 kcal/mole, respectively and for the second reduction stages of LnCoO_(3-y)(Ln=Pr,Nd) were 33.4, 29.1 kcal/mole, respectively.
Clinical Impacts of CD38+ B Cells on Acute Cellular Rejection With CD20+ B Cells in Renal Allograft
Hwang, Hyeon Seok,Song, Ji Hyun,Hyoung, Bok Jin,Lee, So Young,Jeon, Youn Joo,Kang, Seok Hui,Chung, Byung Ha,Choi, Bum Soon,Choi, Yeong Jin,Kim, Ji Il,Moon, In Sung,Kim, Yong Soo,Yang, Chul Woo Lippincott Williams Wilkins, Inc. 2010 Transplantation Vol.89 No.12
BACKGROUND.: There is an increasing evidence that the presence of CD20 B cells is associated with poor clinical outcomes in acute cellular rejection (ACR), but clinical significance of CD38 B cells is undetermined. We attempted to examine the clinical significance of the CD38 B cells alone or in combination with CD20 B cells in renal transplant recipients with ACR. METHODS.: Fifty-four patients with ACR were included. Biopsy specimens were stained for CD20 and CD38. The clinical outcomes of CD20 or CD38 B cells were evaluated with late-onset and repeated ACR, steroid resistance, incomplete recovery after rejection treatment, and allograft survival. RESULTS.: Twenty-three patients (42.6%) had CD20 and 25 (46.3%) patients had CD38 B cells. Of these, 15 patients (27.8%) were positive for both CD20 and CD38 (CD20CD38). CD38 patients had higher rates of late-onset or repeated ACR and incomplete recovery compared with CD38 patients (P<0.05). The patients with CD20CD38 had a higher incomplete recovery rate than did patients with only CD20 or CD38 (P<0.05). The 5-year allograft survival was lower in CD20 and CD38 patients than in CD20 or CD38 patients (P<0.05 for each). CD20CD38 patients had lower graft survival than did patients with CD20 or CD38 alone (P<0.05). CONCLUSION.: Infiltration of CD38 B cells alone or in combination with CD20 B cells is a predictor for poor clinical outcomes of ACR in renal allograft.
Joo-Seok Chae,Nam-Gyum Lee,Il-Young Hwang,Soon-Young Park 한국유통과학회 2015 Asian Journal of Business Environment (AJBE) Vol.5 No.4
Purpose – This study investigated the effects of leaders of national universities on faculty creativity. The study examined transformational leadership and creativity theories and investigated self-efficacy, the parameter between transformational leadership and creativity, to examine its moderating effect and provide policy implications for national universities. Research design, data, and methodology – This study built four hypotheses based on the literature review, and tested these using a survey methodology. The collected data were analyzed using SPSS 15.0. Result – At the national universities, the results were as follows: charisma of leaders had a positive influence on member creativity; intellectual stimulus of leaders had a positive influence on member creativity; and, individual consideration of leaders had a positive influence on member creativity. Therefore, leaders’ transformational leadership had a positive influence on member creativity. Conclusion – Creativity is thought to be important for organizational survival and continuous development at rapidly changing education administrations. Educational administration leaders should exercise transformational leadership to develop member creativity. Member self-efficacy, which had a mediating effect on creativity, requires leadership to develop it.