동일 환자의 위 전정부와 체부에서 분리한 Helicobacter pylori 유전자형의 다양성

권순길,박선미,채희복,윤세진,신경섭,손보라,우찬원,유상렬,김석용 대한내과학회 1999 대한내과학회 추계학술대회 Vol.57 No.-

120미리 운동에너지탄용 소진탄피 조성이 연소 특성에 미치는 영향

권순길,황준식,최상경,김진석,Kwon, Soon-Kil,Hwang, Jun-Sik,Choi, Sang-Kyung,Kim, Jin-Seok 한국군사과학기술학회 2005 한국군사과학기술학회지 Vol.8 No.4

The burning rates of combustible cartridge cases(CCCs) of 120mm kinetic energy ammunition were measured by CBT(Closed Bomb Tester). The burning coefficient was 1.4 for CCC fabricated by Post Impregnation(PI) process, and 1.0 for that by Beater Additive(BA) process. The BA process CCC showed the fixed burning coefficient of 1.0 in spite of changing the composition of CCC. As the Korean Future Main Battle Tank is requiring the high penetration performance compared with that of KlAl tank ammunition(K276), CCC was designed to have higher impetus composition than that of K276 composition(525J/g). The optimum impetus was 600J/g when considering the increases of pressure and muzzle velocity with increasing impetus. When impetus of CCC by changing the composition increased from 525J/g to 600J/g, the muzzle velocity of 12m/s at pressure increase of 3500psi increased in case of using SCDB propellant.

포스터 발표 : 안지오텐신 2에 의한 사구체 상피세포 α-Actinin의 변화

권순길,하태선 대한신장학회 2006 춘계학술대회 초록집 Vol.25 No.1

4경간 현수교에서의 중앙주탑 휨강성의 영향

권순길,유훈,최동호,Gwon, Sun-Gil,Yoo, Hoon,Choi, Dong-Ho 대한토목학회 2014 대한토목학회논문집 Vol.34 No.1

해협횡단 교량으로서 적용사례가 증가될 것으로 예상되는 다경간 현수교에 대한 거동을 간략하면서도 정확히 해석하기 위하여, 현수교에 대한 고유의 해석이론인 처짐이론 해석방법을 사용할 수 있다. 본 연구에서는 처짐이론 방법을 이용한 4경간 현수교의 구조해석을 수행하였다. 거더를 축인장력을 받는 단순보로 고려하였고, 연직방향 하중 및 지점부 모멘트에 의한 단순보의 수직변위를 산정하여, 이 변위가 케이블의 적합방정식을 만족할 때까지 반복해석을 수행하였다. 유한요소해석의 결과와 비교하여 모든 주탑의 휨강성을 고려하는 처짐이론 해석의 결과를 검증하고, 주케이블과 탑정부 간의 구속조건 변화에 따른 다양한 케이블 적합방정식을 이용하여, 4경간 현수교에서의 주탑 휨강성의 중요성을 확인하였다. 또한 중앙주탑 휨강성의 변화에 따른 간단한 변수해석을 수행하여 그에 따른 거동을 파악하였다. For simple and accurate analysis for behaviors of multi-span suspension bridges which are expected to be frequently constructed as strait-crossing bridges, the deflection theory as the peculiar theory of a suspension bridge can be applied. This paper performs a structural analysis for four-span suspension bridges using the deflection theory. Simply-supported beams with tension are used for girders and the deflections of the beams due to the vertical loads and moments at supports are calculated. The calculation is performed iteratively until the deflections satisfy the compatibility equations of cables. The results of the deflection theory analysis considering tower rigidity are compared with those of the finite element analysis for verification. Importance of the tower rigidity for four-span suspension bridges is confirmed using various compatibility equations of the cable due to variation of the constraint conditions between main cable and top of towers. In addition, the simple parametric analysis for variation of the center tower rigidity is performed.

The Incidences and Characteristics of Various Cancers in Patients on Dialysis: a Korean Nationwide Study

권순길,한정호,김혜영,강길원,강민석,Yeonkook J. Kim,민진수 대한의학회 2019 Journal of Korean medical science Vol.34 No.25

Background: The numbers of patients on dialysis and their life expectancies are increasing. Reduced renal function is associated with an increased risk of cancer, but the cancer incidence and sites in dialysis patients compared with those of the general population require further investigation. We investigated the incidences of various cancers in dialysis patients in Korea and used national health insurance data to identify cancers that should be screened in dialysis clinics. Methods: We accessed the Korean National Health Insurance Database and excerpted data using the International Classification of Disease codes for dialysis and malignancies. We included all patients who commenced dialysis between 2004 and 2013 and selected the same number of controls via propensity score matching. Results: A total of 48,315 dialysis patients and controls were evaluated; of these, 2,504 (5.2%) dialysis patients and 2,201 (4.6%) controls developed cancer. The overall cancer risk was 1.54-fold higher in dialysis patients than in controls (adjusted hazard ratio, 1.71; 95% confidence interval, 1.61–1.81). The cancer incidence rate (incidence rate ratio [IRR], 3.27) was especially high in younger dialysis patients (aged 0–29 years). The most common malignancy of end-stage renal disease patients and controls was colorectal cancer. The major primary cancer sites in dialysis patients were liver and stomach, followed by the lung, kidney, and urinary tract. Kidney cancer exhibited the highest IRR (6.75), followed by upper urinary tract (4.00) and skin cancer (3.38). The rates of prostate cancer (0.54) and oropharyngeal cancer (0.72) were lower than those in the general population. Conclusion: Dialysis patients exhibited a higher incidence of malignancy than controls. Dialysis patients should be screened in terms of colorectal, liver, lung, kidney and urinary tract malignancies in dialysis clinics.

이동 맹장을 가지는 장의 회전이상 1례

권순길,박선미,윤세진,채희복,배일헌,정현용 충남대학교 의과대학 지역사회의학연구소 2001 충남의대잡지 Vol.28 No.1

Intestinal malrotation is an uncommon congenital anomaly in adults that is caused by the disturbance of normal intestinal rotation processes during fetal development. It can be found in infant or childhood but can remain asymptomatically until adult. Among the many different type of intestinal malrotation, the mobile cecum is more common than others. We experienced a case of intestinal malrotation with mobile cecum in a 63-year-old female who had been suffered from abrupt onset of low abdominal pain. The diagnosis of intestinal malrotation was made by barium enema and abdominal CT and mobile cecum was made by small bowel series. Patient remained asymptomatic after conservative management.

대응탄 개방형 추진장치용 점화기개발

권순길,김창기,윤상용,Kwon, Soon-Kil,Kim, Chang-Kee,Yun, Sang-Yong 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.6

For developing the ignition device for the interceptor of Korean active protection system, the design parameters of the ignition device which should have a short ignition delay time and sufficient energy for propellant ignition were studied. The electric primer instead of mechanical primer was adopted for deceasing delay time, and ignition code was used for decreasing the time difference of flame propagation from the flame holes. The developed ignition device showed the ignition delay time of a few ms. When the designed ignition device was applied to the open-type propulsion devices, the stable interior ballistic characteristic was showed in a firing test.

소행성 55 Pandora의 CCD 측광 연구

권순길,김승리,이호,전영범,박홍서 한국지구과학회 2007 한국지구과학회지 Vol.28 No.4

We performed R band time-series CCD photometric observations of the 55 Pandora for 2 nights using the0.6 m telescope equipped with 2K CCD camera at SOAO (Sobaeksan Optical Astronomical Observatory). From theobservation we determined its rotation period P = 0.d2007 = 4.h8168, and maximum amplitude 0.281 ± 0.001. We alsoderived the pole position λp(o) = 342, βp(o) = 64, and the shape parameter a/b = 1.27, b/c = 1.31 by applying Amplitude-Magnitude method.......... asteroid, 55 pandora, CCD photometry, rotation period, Amplitude-Magnitude Method. . : ... .... 0.6 m ...... 2K CCD .... .... ... 55 Pandora. .. R .. ...

퇴적물 공극수내 O2, Fe2+, Mn2+ 및 HS- 센싱을 위한 금아말감 미세전극 개발

권순길,박동근,최근영,성재빈,이재우,홍용석 한국물환경학회 2022 한국물환경학회지 Vol.38 No.2

A gold amalgam voltammetric microelectrode (GAVM) system was developed for the quantification of dissolved biogeochemical species, such as O2, Fe2+, Mn2+, and HS- in sediment porewater. Commercially available Ag/AgCl and platinum electrodes were used as the reference and counter electrode, respectively, and a gold amalgam microelectrode was fabricated in the laboratory using 150-um diameter gold wire and a borosilicate capillary tube with a 1.6-mm diameter. A portable potentiostat (Metrohm, DropSens) was used for the application of voltage sweeping and to acquire the electric current. For sediment profiling, a commercially available actuator was customized and modified. The analysis method used in the system used the most widely used analysis method among the electrochemical analysis currently used The GAVM system was successively calibrated with the species and applied to estuarine sediments. The porewater analysis showed that the oxygen concentration was decreased to zero at a depth of 0.6 mm, and maximum Mn2+ and Fe2+ concentrations of 50 uM and 20 uM were detected at 2 and 3-cm depths, respectively. Maximum HS- concentrations of 10 uM were detected at 4 cm in the deeper sediments. The GAVM system was successfully developed and applied to the sediment and can be used to better understand biogeochemical reactions.

<산수과> 자기 사고 발표법을 통한 문제 해결력 신장

권순길 大邱敎育大學校 科學敎育硏究所 1988 과학·수학교육연구 Vol.12 No.-