B형 간염바이러스항원혈증과 관련된 소아 막성신염

김종윤,서정기,고광욱,최용,정해일,윤회상,김용일 대한신장학회 1985 Kidney Research and Clinical Practice Vol.4 No.1

The following results were obtained by the retrospective clinicopathological analysis of 20 cases of membranous nephropathy associated with hepatitis B antigenemia in children. 1) The mean age of onset was 5 years 9 months, and male to female ratio was 18 to 2 with marked male preponderance. 2) Hepatitis Be antigen was positive in all 17 cases tested, reasonably high enough to speculate that the subepithelial deposit of the membranous nephropathy is related to hepatitis Be antigen. 3) Edema(65%), edema and gross hematuria(30 %) were the most common presenting symptoms. 4) 19 out of 20 cases showed nephrotic syndrome during the clinical courses, and 8 cases(40%) showed hypocomplementemia. 5) Pathologically, hepatitis B virus antigenemia associated membranous nephropathy was different from the idiopathic membranous nephropathy by its presence of election dense deposits in the sites other than subepithelial portion. 6) Steroid did not provide any prolonged beneficial effect. Because there is an increased risk of persistent hepatitis B virus antigenemia with steroid treatment, steroid seems not be recommended in hepatitis B virus antigenemia associated membra- nous nephropathy at present.

Sodium stearate 와 칼슘 이온이 흡착된 침강성 탄산칼슘의 정전기적 성질과 유변학적 물성에 관한 연구

김종윤,김종득,송명근 한국공업화학회 1997 응용화학 Vol.1 No.2

본 연구에서는 수용상에서 stearate와 칼슘이온이 침강성 탄산칼슘의 유변학적인 물성과 정전기적 성질에 미치는 영향을 조사하였다. 3.3% 탄산칼슘 suspension에 1:1의 몰비율로 stearate와 칼슘이온을 흡착시킨 결과, 칼슘이온의 흡착으로 인하여 제타 포텐셜이 양의 영역으로 전이되며, 이온성 계면활성제의 흡착으로 인해 나타나는 PZC(point of zero charge)의 경우 칼슘이온의 영향으로 인하여 sodium stearate만이 흡착된 탄산칼슘 suspension에 비해 고농도에서 나타나게 된다. 탄산칼슘 suspension의 yield value값은 입자의 제타 포텐셜과 서로 반비례하는 경향성을 보이는데, 이는 sodium stearate가 흡착한 suspension계에서의 분산 안정성은 정전기적 반발력이 주된 것임을 보여준다. The effect of sodium stearate and calcium ions on the zeta potential and rheological properties of aqueous calcium carbonate suspensions was studied. The zeta potential of 3.3wt% calcite suspension adsorbed with sodium stearate and calcium ion with 1:1 mole ratio exhibited complex trend with sodium stearate concentration and the transition toward the positive value compared with the calcium carbonate suspensions adsorbed with sodium stearate only. The concentration of stearate at PZC(point of zero charge) of calcium carbonate adsorbed with sodium stearate and calcium ion was higher than that of calcium carbonate suspension adsorbed with sodium stearate only. The yield values of suspensions showed the reverse trend to zeta potential and this confirms that electrostatic repulsion force between calcium carbonate particles is the main effect to dispersion stability in aqueous medium.

모세관 및 Wheatstone bridge 이용 용융염 전기전도도 측정 연구

김종윤,배상은,김대현,연제원,송규석 한국방사성폐기물학회 2012 한국방사성폐기물학회 학술논문요약집 Vol.10 No.1

장교에게 필요한 말하기와 쓰기의 기법 연구

김종윤 陸軍士官學校 1993 한국군사학논집 Vol.44 No.-

How to communicate effectively is one of the most important elements in the successive military leadership. Army officer's special abilities in delivering his ideas and thoughts are not only the direct elements to lead his military unit but also the decisive facts to make himself the center of every possible communication. Our study focused on the four elements : importance of army officer's expression ability, suggestion to open courses for writing and speaking in every military school, necessity of various materials related to communication. We also have shown that how effective it is for army officer to use persuasive method rather than other methods in elevating his leadership. Therefore persuasive matter of writing and speaking have been emphasized. And various analyses of example sentences lead us how urgent it is to develop persuasive communication skills in the military institutes.

위상 카드와 간섭계를 이용한 광학적 보안 시스템

김종윤,김기정,박세준,김철수,배장근,김정우,김수중,Kim, Jong-Yun,Kim, Gi-Jeong,Park, Se-Jun,Kim, Cheol-Su,Bae, Jang-Geun,Kim, Jeong-U,Kim, Su-Jung 대한전자공학회 2001 電子工學會論文誌-SD (Semiconductor and devices) Vol.38 No.1

In this paper, we propose a new optical security technique using two phase masks based on interferometer. A binary random phase image is used as a reference image and the encrypted image is generated according to the phase difference between the reference image and the original image. If there is no phase difference of a same pixel position in two phase masks, interference intensity of the pixel has minimum value and if phase difference of a same pixel position in two phase masks is $\pi$, its interference intensity has maximum value. We can decrypt the original image by putting two phase masks on each of the two optical paths of the Mach-Zehnder interferometer. Computer simulation and the optical experiments show a good performance of the proposed optical security system. 본 논문에서는 컴퓨터와 리소그라피를 이용하여 암호화된 두 개의 위상카드를 제작하고, 마흐-젠더 간섭계를 이용하여 암호화된 이진영상을 복호화하는 방법을 제안하였다. 이때 두 위상카드 중 하나는 기준 영상으로 사용되고 다른 하나는 암호 영상으로 사용된다. 하나의 랜덤 위상 카드를 기준 영상으로 두고 암호화하고자 하는 영상에 맞게 빛의 간섭 현상을 이용하여 암호 영상으로 사용될 위상 카드를 제작하였다. 원 영상의 복원은 경로차가 같도록 구성한 마흐-젠더 간섭계의 두 경로에 기준 영상과 암호 영상을 위치시켜 간섭시킴으로써 영상을 복원할 수 있다. 위상 카드는 광세기 검출기로 볼 수 없을 뿐만 아니라 복제할 수도 없어서 개인 정보보호 및 인증시스템에 매우 유용하게 사용될 수 있다. 간단한 영상에 대한 광실험을 통하여 제안한 시스템의 타당성을 확인하였다.

침의 통증 조절에 관한 최근 연구 동향

김종윤,고형균,남상수 대한침구의학회 2006 대한침구의학회지 Vol.23 No.1

Objectives : To research the recent trends of study related to pain modulation of acupunture. Methods : We searched the resent study related to pain modulation of acupunture. Results & Conclusion : 1) Early studies demonstrated that the analgesic effects of acupunture are mediated by opioid peptides in the periaqueductal gray. Recent evidences show that nitric oxide plays an important role in mediating the cardiovascular responses to acupunture stimulation through gracile nucleus-thalamic pathway. 2) Recent evidences show that acupunture stimulate gene expression related to pain. 3) By using funtional magnetic resonance and positron emission tomography, recent study suggest that acupunture has regionally specific, quantifiable effects on pain-relevant brain structures.

하악골에 발생한 골모세포종: 증례보고(3례)

김종윤,김학진,길태준,김재영,김형준,차인호,남웅,Kim, Jong-Yun,Kim, Hak-Jin,Kil, Tae-Jun,Kim, Jae-Young,Kim, Hyung-Jun,Cha, In-Ho,Nam, Woong 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.2

Osteoblastoma is a rare tumor of bone representing less than 1% of all tumors of the maxillofacial region. This is a neoplasm of bone characterized by a proliferation of osteoblasts forming bone trabeculae. Because the clinical feature of benign osteoblastoma is nonspecific and osteoblastoma has a pleomorphic histologic appearance, the differential diagnosis is difficult problem. We studies the case records 3 new patients with osteoblastoma. We discussed the case from clinical, radiologic, and histologic feature for differential diagnosis. Three cases from our clinic is reported and analized with previously described cases.

고온 LiCI-KCl 용융염의 전기전도도 측정: 직류법과 교류법 비교 연구

김종윤,이진홍,최용석,배상은,연제원,송규석 한국방사성폐기물학회 2013 한국방사성폐기물학회 학술논문요약집 Vol.11 No.1

Changes in the Brewer-Dobson Circulation for 1980-2009 Revealed in MERRA Reanalysis Data

김종윤,전혜영,강민지 한국기상학회 2014 Asia-Pacific Journal of Atmospheric Sciences Vol.50 No.5

Changes in the Brewer-Dobson circulation (BDC) duringthe 30 years 1980-2009 are investigated using Modern Era Retrospectiveanalysisfor Research and Applications (MERRA) reanalysis data. The mass streamfunction that is induced by wave forcings in thetransformed Eulerian-mean (TEM) equation through the downwardcontrolprinciple is used as a proxy for the BDC. The changes in theBDC are investigated using two aspects: the wave propagationconditions in the stratosphere and the wave activity in the uppertroposphere. They are compared in the first (P1) and second (P2) 15-year periods. The resolved wave forcing, expressed by the Eliassen-Palm (EP) flux divergence (EPD), is significantly enhanced duringthe December-January-February (DJF) season in P2 in both theNorthern Hemisphere (NH) high latitudes and the SouthernHemisphere (SH) mid- and high latitudes. The increased zonal meanzonal wind at high latitudes in the SH, caused by ozone depletion,leads to an upward shift of the Rossby-wave critical layer and thisallows more transient planetary waves to propagate into thestratosphere. In the NH, the enhanced EPD in DJF leads to anincrease in the frequency of Sudden Stratospheric Warming (SSW)events. The gravity wave drag (GWD) is smaller than the EPD andthe change in it between the two time periods is insignificant. Theresidual term in the TEM equation is similar to the GWD in the twoperiods, but its change between the two periods is as large as thechange in the EPD. Among the four components of the EP flux at250 hPa, the meridional heat flux played a dominant role in theenhancement of the BDC in P2.

인터넷주소 분쟁관련 규정의 입법배경 및 내용

김종윤 정보통신정책연구원 2002 세미나및공청회 Vol.2002 No.