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다극형 스파크 �b과 다중평행판 축전기형 전송회로를 사용한 질소레이저의 동작특성
장철용,박영수,양준목,이치원 충남대학교 기초과학연구소 1994 忠南科學硏究誌 Vol.21 No.1
We have studied on the operational characteristics of a nitrogen laser which was coupled with a multiplex parallel capacitor type Blumlein transmission line circuit and a multiplex sparkgap. This spark gap consisted of 8 pairs of electrode and was 50 ㎝ in length, as long as the laser tube. According to increasing the number of electrodes in the spark gaps up to the 6 pairs, the output power and stability of the laser was increased. It was to be improved that the multiplex spark gap was operated as a good peformance to the nitrogen laser system. The optimum operational condition of the nitrogen laser at 20㎐ of repetition rate could be obtained with the nitrogen gas pressure of 80 torr, E/P value of 325.0 v/㎝ torr at the electrodes spacing 5.0 ㎜ and of 90 torr, E/P value of 311.1 v/㎝ torr at the electrodes spacing 6.0 ㎜ respectively.
근육세포주에서 당 흡수 및 대사 조절에 대한 황기탕 에탄올 추출물의 효과
장철용,신용진 대한한방내과학회 2020 大韓韓方內科學會誌 Vol.41 No.4
Objectives: The aim of this study was to evaluate the effects of Hwanggi-tang on glucose digestion, uptake, and metabolism in murine C2C12 myotubes. Methods: Hwanggi-tang was prepared according to the Dong-ui-bo-gam (≪東醫寶鑑≫) prescription by 70% ethanol extraction. The effect on glucose digestion was examined by determining the inhibitory effect of Hwanggi-tang on α-glucosidase activity. We also compared and verified the gene and protein expression of genes related to glucose uptake in C2C12 myotubes treated with Hwanggi-tang or insulin. Glucose metabolism was assessed by the expression levels of associated enzymes. Results: Hwanggi-tang caused a dose-dependent inhibition of α-glucosidase activity, induced glucose uptake by activation of the PI3K/Akt/mTOR pathway in the insulin signaling pathway, and promoted glucose oxidation and β-oxidation. Conclusions: Hwanggi-tang exerts an anti-diabetic effect on murine myotubes by inhibiting glucose digestion and inducing glucose uptake and consumption.
뇌졸중 환자에게 유치도뇨관 삽입 이후 발생한 다제내성 녹농균 요로감염 한방치험 1례
장철용,김효린,황규상,유근정,이수영,김준현,김민수,신용진,신선호,Jang, Chul-yong,Kim, Hyo-rin,Hwang, Gyu-sang,Yu, Keun-jeong,Lee, Su-yeong,Kim, June-hyun,Kim, Min-soo,Shin, Yong-jeen,Shin, Sun-ho 대한한방내과학회 2016 大韓韓方內科學會誌 Vol.37 No.6
This case study reports on the effect of Korean medicine on a catheter-associated urinary tract infection (CAUTI) caused by multidrug-resistant Pseudomonas aeruginosa. An 83-year-old man diagnosed with stroke had dysuria, and it was found that an indwelling urinary catheter led to CAUTI. From laboratory tests, we identified multidrug-resistant Pseudomonas aeruginosa and applied Korean medicine to him. After herbal medication with acupuncture and moxibustion, we studied a urinalysis and urine culture again for follow-up. We found meaningful improvement in bacteriuria and bacterial identification. This case suggests that Korean medicine could have a beneficial effect on urinary tract infections caused by multidrug-resistant Pseudomonas aeruginosa.
건물에너지 관련 법안 기준에 따른 건물에너지효율등급 평가
장철용(Jang Cheol-Yong),한혜심(Han Hye-Sim),이진숙(Lee Jin-Sook) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10
Enhancement of exterior's insulation performance like wall or window etc. is general way for building's energy efficient and thermal performance. In this paper, energy saving rate will be analyzed and compared considering the window‘s thermal performance in a apartment with Building Energy Rating System's evaluation tool. In the process of evaluation, energy saving rate is measured at each stage of the window's thermal performance from 3.3 to 2.0. As a result of this research, reduction rating of heating energy depending on the building law in comparision with standard house will be used in a plan for degree of Building Energy Efficiency Rating System.
지역별 발코니확장 전용 진공창의 건물에너지효율등급에 관한 연구
장철용(Jang Cheol-Yong),안병립,한혜심(Han Hye-Sim),Kim Chi-Hoon 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
Generally, the building's windows and ventilation for the purpose of mining and the vista and windows by emotional engineering design area is a growing trend. According to the flow of energy is lost from the building, will be achieved through the walls and roof and windows. Although the basic concept of vacuum window was already initiated in 1893, it has not been developed completely until now because of the lack of manufacturing technology. Recently KIER (Korea Institute of Energy Research) succeeded in developing prototype vacuum window glazing in the lab. By applying the results of this experiment to building energy efficience rating tool, this study compares energy efficiency rates depending on a region.-Jeju, South, Central. And it shows how much does Super window reduce Building energy consumption.
장철용(Cheol-Yong Jang),이나은(Na-Eun Lee) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
Soft glazing, one of manufacturing process of Low-e glazing, has weaknesses that temperable is impossible. Because of this, it should be coated after strengthening. That may be fatal weaknesses in aspects of distribution of products. For improving weaknesses, we propose the temperable Low-e glazing. This study in progress measures and evaluates air tightness of windows applied Low-e glazing by experiment. Ultimately, This study seems to improve negotiability of temperable Low-e glazing by supplying products strengthened air tightness as well as insulation performance of windows with temperable Low-e glazing.
장철용(Jang Cheol-Yong),안병립(Ahn Byung-Lip),김치훈(Kim Chi-Hoon),홍원화(Hong Won-Hwa) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10
Currently the country's foreign energy dependence reaches approximately 97% and the total energy consumption percentage of buildings(commercial and domestic parts) reaches approximately 24%. Building energy saving by enhanced insulation will be very important issue. Therefore, the solution is required to reduce energy loss and increasing displeasure caused by excessive influx of solar energy through windows, to solve the problems like decoloration on indoor furniture an clothes by harmful ultraviolet rays, air conditioning and increased cost. This research used for commercialization and dissemination by basic information.,through a evaluation on airtightness and insulation performance of the window of high efficiency energy equipment which can improve the airtightness and insulation performance
장철용(Cheol-Yong Jang),이나은(Na-Eun Lee),권민규(Min-Kyu Kwon) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
The dry wall using steel stud is used to buildings in the inside and outside of the country because it has the merit that application is possible to various architecture. The purpose of this study is to measure thermal performance of dry wall which uses steel stud transformed one by using measurement equipment to decrease heat bridge of steel stud and ensure heat performance as dry wall. As a comparative performance test result, dry wall which uses steel stud transformed one has a performance enhancement compare with the dry wall using general steel stud.