생물 광자의 이차원 영상을 위한 렌즈계 최적화와 장치 구성

이승호,심성보,김재순,양준모,이창훈,소광섭,Yi Seung-Ho,Shim Seong-Bo,Kim Jai-Soon,Yang Joon-Mo,Lee Changhoon,Soh Kwang-Sup 한국광학회 2004 한국광학회지 Vol.15 No.6

초 미약 생물광자의 이차원적 영상을 얻기 위해 고속 초고감도 CCD 사진기를 검출기로 사용한 실험 장치를 고안하였다. 본 장치에는 식물의 잎으로부터 방출하는 지연광 (delayed luminescence)를 발생시키기 위한 조명 장치를 설치하였으며, 조명 장치와 검출기에 있는 셔터들은 서로 연동되어 동작하도록 이루어졌다. CCD 사진기에 사용된 렌즈계는, 상용렌즈들로만 구성되었는데, 시료에서 나오는 생물광자의 집광 효율 (collection efficiency)을 높이도록 최적화된 렌즈 설계에서 나온 결과를 기초로 하였다. 이 장치들을 다용도 암 상자에 장착하여 사철나무 잎에서 나오는 지연광의 영상을 성공적으로 얻었다. We developed a 2-D imaging system to detect ultra weak biophoton by using a high sensitive fast CCD camera. We installed an illumination apparatus to generate delayed luminescence from plant leaves. Shutters at the illumination system and detector were synchronized to each other. The lens system of the CCD camera was newly designed to accommodate the specific requirements to enhance the collection efficiency for biophoton. Based on the lens simulation, commercial lenses were chose for the lens system. All the equipment was installed in a multi-purpose dark box and the delayed luminescence of Euonymus japonica was successfully acquired.

현로(腎勞)에 대한 문헌적(文獻的) 고찰(考察)

이승호,Lee, Seong-Ho 대한한방내과학회 1991 大韓韓方內科學會誌 Vol.12 No.1

According to the results of the studies on 21 references, the orders in the cause of Kidney-Exhaustion (神勞) were as follows ; 1) The Orders in the cases of Kidney-exhaustion (神勞) were three parts ; Keomjijijul (衿持志節), Inyukdonggi (人逆冬氣), Saekyokkwado (色欲過度). 2) The symptom were 背難以俯仰 小便不利 色赤黃而有餘瀝 莖內痛陰濕囊生瘡 小腹滿急 有精 白濁 耳鳴.

Separation and Characterization of Dust and Ground Water Particulates Using Gravitational SPLITT Fractionation.

이승호,박희영,이상근,용성권,음철훈,Lee, Seung Ho,Park, Hui Yeong,Lee, Sang Geun,Yong, Seong Gwon,Eum, Cheol Hun Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.6

Split-flow thin (SPLITT) cell Fractionation(SF) is a technique that allows separation of particulates and macromolecules into two fractions. A gravitational SF(GSF) system is constructed and tested for its applicability for separation of dust and ground water particulates. When tested with polystyrene latex particles, experimental data were in good agreements with theory. The 9.8 and 21.4㎛ polystyrene particles were successuflly separated in a continuous mode, where the mixture is continuously fed into the GSF channel allowing separation in a large sacle. The GSF system is successfully applied to continuous separation of dust and ground water particels based on the sedimentation coefficient, which is closely related to the particle size. The separations were confirmed by microscopy and energy-dispersive X-ray (EDX) analysos.

충격반향기법을 이용한 기둥부재의 크기 추정

이승호 ( Lee Seung-ho ),나준호 ( Na Jun-ho ),홍성욱 ( Hong Seong-uk ),김승훈 ( Kim Seung-hun ),이용택 ( Lee Yong-taeg ) 한국구조물진단유지관리공학회 2013 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.17 No.1

현무암 퇴적지형의 사면안정화 방안 및 친환경적 표면처리에 관한 사례연구

이승호(Lee Seung Ho),조성민(Cho Seong Min),이진태(Lee Jin Tae),노흥제(Noh Heung Jae),황영철,신희순(Shin Hee Soon) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

임신 주기에 따른 산소라디칼 생성계 및 해독계 활성도의 변화

김종호(Jong Ho Kim),심재철(Jae Chul Sim),배철성(Cheol Seong Bae),윤혜원(Hae Won Yoon),이영기(Young Gee Lee),박윤기(Yoon Ki Park),이두진(Doo Jin Lee),이승호(Sung Ho Lee) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.2

N/A Objective; This study was conducted to evaluate the effect of pregnancy on the activities of oxygen hee radical generating and scavenging system in the female rats. Material & Method; Rats weighing 200-220 gm were grouped to non-pregnant, 2nd trimester and 3rd trimester of pregnancy. The experiment was carried out following overnight fasting. Animals were anesthetized by administration of pentothal sodium, and blood was drawn via abdominal aorta. After exsanguination, the liver, kidney, heart, lung, with or without placenta tissues were excised immediately. The excised tissue was frozen in liquid nitrogen rapidly, and stored in liquid nitrogen for analysis. Results; The gain in body weight was higher in pregnant rats than in normal rats. Lipid peroxidation was not significantly different among all groups in the liver, kidney, heart, lung, and placenta tissue. Xanthine oxidase activity of the kidney in the 3rd trimester of pregnancy was lower than that of non-pregnant rats. Superoxide dismutase activity of the liver was significantly decreased in the 2nd and 3rd trimester of pegnancy compared with that of non-pregnant rats, and that of lung was also decreased than that of non-pregnant rats. Catalase activity of the kidney was decreased in the 2nd and 3rd trimester of pregnancy compared with that of non-pregnant rats. Glutathione content of the liver was markedly decreased in the 2nd and 3rd trimester of pregnancy compared with that of non-pregnant rats. Conclusion; In conclusion, these results suggest that oxygen free radical will not increase in the liver, kidney, heart, lung, and placenta during normal pregnancy, but in the cases of overproduction of oxygen free radical, the liver, kidney, and lung will have me chance of tissue damage because of decreased activity of some anti-oxidant enzymes and/or decreased amount of anti-oxidant materials.

운모상에 인산아연이 도포된 방청안료의 제조 및 성능평가

이유진(Yu Jin Lee),박성수(Seong Soo Park),홍성수(Seong Soo Hong),이승호(Seung Ho Lee),김대성(Dae Sung Kim),이근대(Gun Dae Lee) 한국청정기술학회 2013 청정기술 Vol.19 No.3

인산아연이 도포된 운모 안료(ZP/mica)를 인산, 질산아연 그리고 운모를 출발물질로 하여 제조한 후, 방청안료로 사용하였다. 주사전자현미경 및 X-선 회절분석기 등을 이용하여 제조된 안료의 형상과 결정구조를 관찰하였다. 제조된 안료와 에폭시수지를 배합하여 도막을 형성시킨 다음 전기화학적 임피던스법을 이용하여 안료의 방청성을 평가하였다. 70 ℃에서 합성된 ZP/mica 안료의 방청성이 20 ℃에서 제조된 안료보다는 우수하다는 것을 알 수 있었다. 70 ℃에서 합성된 ZP/mica 안료표면에는 Zn₃(PO₄)₂?2H₂O 이외에도 ZnO가 동시에 생성되어 있음을 볼 수 있었다. 합성된 ZP/mica 안료의 우수한 방청성은 운모표면의 아연화합물에 의한 전기화학적 방청기구와 판상구조의 운모에 의한 장벽 방청기구의 상승작용에 기인한 것으로 생각된다. The zinc phosphate-coated mica (ZP/mica) pigments were prepared using phosphoric acid, zinc nitrate and mica as starting materials, and used as anticorrosive pigments. The scanning electron microscopy (SEM) and x-ray diffraction (XRD) techniques were used to observe the morphology and crystal structure of prepared pigments. The prepared pigments were incorporated into an epoxy binder to prepare coating and the corrosion inhibition performance of the pigments was evaluated using electrochemical impedance spectroscopy (EIS). It was found that the anticorrosive performance of the ZP/mica pigment prepared at 70 ℃ was the better than that prepared at 20 ℃. The formation of ZnO, in addition to Zn₃(PO₄)₂?2H₂O, was observed on ZP/mica pigment prepared at 70 ℃. The excellent anticorrosive performance of ZP/mica pigment could be ascribed to the synergistic effect with electrochemical anticorrosive mechanism from zinc compounds on mica and barrier anticorrosive mechanism from lamellar mica.

수열합성 공정을 통한 알루미나 코팅층의 나노구조 조절에 의한 반사방지 특성의 변화

이윤이 ( Yun Yi Lee ),손대희 ( Dae Hee Son ),이승호 ( Seung Ho Lee ),이근대 ( Gun Dae Lee ),홍성수 ( Seong Soo Hong ),박성수 ( Seong Soo Park ) 한국공업화학회 2010 공업화학 Vol.21 No.5

박막 및 디스플레이 분야에서는 광학 부품소재의 우수한 광 투과성과 투명성을 요구하는 수요가 증가함에 따라 우수한 반사방지 특성의 부여에 대하여 관심이 집중되고 있는 실정이다. 본 연구에서는 반사방지 기능을 부여하기 위하여 졸-겔법에 의한 수열합성법을 통하여 기저 물질 표면에 산화알루미늄을 나노 크기 꽃 형태의 프레임 구조를 가진 단일 산화물층을 형성시키고자 하였다. 코팅 층 시편의 특성은 UV-Vis 분광기, FT-IR 분광기, XRD 및 FE-SEM을 이용하여 분석하였다. 알루미나 졸이 코팅된 시편들의 모폴로지는 수열합성의 온도와 시간 및 초음파 제공에 의해 조절되도록 하였다. 꽃 형태의 나노 프레임 구조 형태로 구성된 코팅 층에서 높은 광투과율과 반사방지특성이 발현되었다. Highly anti-reflective optical property has been focussed in the field of thin film and display because of increasing demands to the high transparency and clearness of optical component. In this study, to obtain anti-reflective property, the formation of aluminium oxide with nanoscaled flowerlike frame structure was introduced as oxide material monolayer on the substrate by hydrothermal synthesis through sol-gel method. The properties of coating layer were measured by the means of UV-Vis spectroscopy, FT-IR spectroscopy, XRD, and FE-SEM. The morphology of coating layer in alumina-sol coated samples was controlled by hydrothermal temperature and time with aid of ultrasound. It was found that high transparency and anti-reflective optical properties were obtained the formation of flowerlike nanoframe structure.

알코올-물 혼합용액을 이용하는 Solvothermal 법에 의한 나노크기의 TiO2 제조

이상근 ( Sang Geun Lee ),박성수 ( Seong Soo Park ),홍성수 ( Seong Soo Hong ),박종명 ( Jong Myung Park ),이승호 ( Seung Ho Lee ),김대성 ( Dae Sung Kim ),이근대 ( Gun Dae Lee ) 한국공업화학회 2011 공업화학 Vol.22 No.6

본 연구에서는 TiCl4 출발물질 및 알코올과 물의 혼합용액을 이용한 solvothermal 법을 통하여 나노 크기의 TiO2를 제조하였다. 이 때 혼합용액 중의 알코올의 종류 및 그 조성이 생성되는 TiO2 입자들의 결정상 혹은 응집상태에 미치는 영향에 대해 조사하였다. 생성물들의 물성은 X-선 회절법과 투과 및 주사전자 현미경을 이용하여 분석하였다. 1-부탄올/물의 부피 비가 각각 다른 혼합용매(1-부탄올/물; 100/0, 75/25, 50/50, 25/75, 0/100)를 이용한 solvothermal 법에 있어서 얻어진 루틸상의 TiO2 입자들의 응집상태는 1-부탄올/물의 비에 따라 변하였으며, 1-부탄올/물의 75/25 부피 비에서 잘 분산된 TiO2 나노 입자가 얻어졌다. 알코올과 물의 비를 75/25로 고정시킨 혼합 용매를 이용한 solvothermal 법에 있어서 알코올의 종류에 따라 생성되는 TiO2 입자들의 결정상이 변함을 확인하였다. 즉 메탄올, 에탄올 및 이소프로필 알코올의 혼합용액을 사용한 경우에는 아나타제상의 입자가 얻어지며 1-부탄올 혼합용액을 사용하면 루틸상의 TiO2 입자가 생성되었다. 이상의 결과들로부터 출발물질로는 TiCl4를 그리고 반응용매로 알코올과 물의 혼합용액을 이용하며 더 이상의 첨가제를 사용하지 않는 solvothermal 법에 있어서는, 단순히 혼합용액의 조성 또는 알코올의 종류를 변화시킴으로써 생성되는 TiO2 입자들의 분산성 향상 및 결정상 조절이 가능한 것을 확인할 수 있었다. In this study, a solvothermal reaction to prepare nanocrystalline titania was carried out using TiCl4 and mixed solvents of alcohol and water. The effects of the type and the composition of alcohol on the crystal structure and agglomeration of final TiO2 products were investigated. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as scanning electron microscopy (SEM). In the solvothermal reaction using the n-butanol solutions with different volume ratios of n-butanol/water (100/0, 75/25, 50/50, 25/75, 0/100), the extent of agglomeration of obtained rutile TiO2 was found to change with the volume ratio of n-butanol/water, and the n-butanol/water ratio of 75/25 revealed the best result for the preparation of well-dispersed nanocrystalline TiO2 powders. The crystal phase of TiO2 prepared through the solvothermal reaction changed with the type of alcohol in solvent (alcohol/water = 75/25). TiO2 products obtained with the aqueous solutions of methanol, ethanol and isopropanol have an anatase phase, while that with n-butanol has a rutile phase. The results showed that, in the solvothermal reaction using both TiCl4 as a starting material and the alcohol-water mixed solvents without any other additive, the enhancement of dispersion and control of crystal structure of TiO2 products can be feasible by simply varying the composition and type of alcohol in the mixed solvents.

증례 : 류마티스 ; 레이노 병을 동반한 수부의 사구 종양(Glomus tumor)의 1예

이승호 ( Seung Ho Lee ),박원 ( Won Park ),권성렬 ( Seong Ryul Kwon ),임미진 ( Mie Jin Lim ),최석진 ( Suk Jin Choi ),김여주 ( Yeo Ju Kim ),정경희 ( Kyong Hee Jung ) 대한내과학회 2014 대한내과학회지 Vol.87 No.6

본 증례는 레이노 현상으로 내원한 환자에서 네 번째 손가락 끝의 국소 통증이 지속되어 수부 자기공명영상 검사를 이용해 사구 종양을 진단하고 수술적 치료로 호전된 경우이다. 레이노병 환자에서 손의 국소적 통증이 지속된다면, 매우 드물긴 하나 사구 종양과 같은 국소 병변의 동반에 대해서도 고려할 필요가 있다. Although it is difficult to reach a diagnosis in patients who complain of pain or sensitivity to cold in their hands, Raynaud`s phenomenon is most often suspected in such cases. Symptoms of Raynaud`s phenomenon include pallor, cyanosis, and redness following cold exposure. Glomus tumors can also increase patients` sensitivity to cold. In this case, our patient complained of symptoms indicative of Raynaud`s phenomenon. Although treatment of Raynaud`s phenomenon improved the symptoms, pain persisted in the fourth finger of the left hand. We diagnosed the patient with a glomus tumor and, after surgical treatment, the patient`s symptoms improved. Here, we have also reviewed and discussed a number of reports of glomus tumors associated with Raynaud`s disease. Diagnosing a glomus tumor in the hand may take some time, and the diagnosis could be further delayed if accompanied by Raynaud`s phenomenon. Although glomus tumors are rare, we suggest that clinical awareness is important for early diagnosis and treatment. (Korean J Med 2014,87:765-770)