SPM(Scanning Probe Microscopy)을 이용한 국소영역에서 실리콘 나노크리스탈의 전기적 특성 분석

이의규,김정민,최민기,김용상,강치중 명지대학교 자연과학연구소 2004 자연과학논문집 Vol.23 No.-

본 연구에서는 scanning capacitance microscopy(SCM)와 electrostatic force microscopy(EFM)를 이용하여 국소영역에서 실리콘 나노 크리스탈의 전기적 특성을 분석하였다. 실리콘 나노 크리스탈은 에어로졸 방식으로 p-type 실리콘 웨이퍼 위에 10~40 nm의 크기와 약 10^(10)/㎠의 밀도를 갖도록 제작하였다. 실리콘 나노 크리스탈에서 전자와 정공의 trapping 현상은 EFM, SCM 이미지를 통하여 관찰하였고 이러한 나노 크리스탈의 국소영역 특성과 MOS 캐패시터 구조의 C-V 특성을 비교 분석하였다. scanning probe microscopy(SPM) with a conducting tip has been used to electronically probe silicon nanocrystals (NCs) on an insulating substrate. The NC samples were produced by aerosol techniques followed by a sharpening oxidation. The size of NCs is in the range of 10-40 nm and deposited on a p-type silicon substrate with a density of around 10^(11)/㎠. Using a conducting tip, the charge was injected directly into the NCs, and the bias dependent images due to the trapped charges in the NCs were monitored. Charging effects affected by the size of NCs and injection direction were also estimated from the apparent height differences of the NCs with respect to the applied bias.

기분 장애 환자에서 나타나는 불특정 CAG 삼핵산 반복서열의 확장

손성은,임신원,이소영,황혜진,진동규,박정의,김도관,김이영 대한신경정신의학회 2000 신경정신의학 Vol.39 No.2

연구목적: 기분장애는 그 원인과 발생기전은 아직 밝혀져 있지 않고 있지만, 과거부터 유전적 요인이 질병의 발생과 중요한 연관성을 가지고 있다고 알려져 있다. 특히 양극성 정동장애는 가족력이 있는 경우에 발병될 가능성이 높고, 같은 가족 내에서 발생했을 때 세대가 내려감에 따라서 발병시기가 점차 빨라지며 증세가 심해지는 경향이 있어서 그 유전적 배경에 대해 많은 의문이 있어 왔다. 연구자들은 다양한 증상의 기분장애 환자들의 DNA에서 불특정 CAG 삼핵산 반복(trinucleotide repeat. TNR) 정도를 분석함으로써 TNR 확장이 기분장애의 유전과 관련되는지 살펴보았다. 방법: 환자 군은 DSM-Ⅲ-R 진단기준에 의거하여 양극성 정동장애(N=55), 주요우울장애(N=67) 환자들을 선발하였다. 정상인(N=89)은 정신과적 병력이 없고 다면성 인성검사상 정상의 profile을 나타내는 병원 종사자, 학생 및 건강의학센타 방문자들 중 선발하였다. TNR의 확장은 genomic DNA를 순수분리한 후, (CTG)₁□의 oligonucleotide를 □-□□P-ATP로 방사선 표지하여 반복서열 확장 탐지법(repeat expansion detection)으로 측정하였다. 집단간의 비교를 위해 Mann-Whitney U 검증을 실시하였다. 결과: DNA에서 관찰되는 불특정 CAG 삼핵산 반복 길이의 평균은 양극성 정동장애에서 169.8bp(S.D=58.6), 주요우울장애에서 167.5bp(S.D=63.9)로서 대조군 178.7bp(S.D=56.5)과 비교하였을 때 유의미한 차이는 관찰되지 않았다. 각각의 환자군을 가족력이 있는 군과 없는 환자군으로 나누어 대조군과 비교하였을 때도 유의미한 차이는 관찰되지 않았다. 결론: 불특정 CAG 삼핵산 반복서열 확장이 양극성 정동장애 환자와 주요우울장애 환자들의 유전 양식에 영향을 미친다는 가설을 뒷받침하지 않는다. Objectives: The genetic facotrs have been suggested for the etiology of mood disorders but the mode of inheritance is complex. Increased severity and an earlier onset of the bipolar and major depressive disorder over generations within families(Anticipation) were reported. In order to test the hypothesis that trinucleotide repeat expansions underlie the genetic basis of Bipolar and major depressive disorders, we have analyzed the extent of CAG reapeats in genomic DNA from mood disorder patients. Methods: 55 bipolar disorder, 67 major depressive disorder patients were recruited accord-ing to the DSM-Ⅲ-R criteria. 89 normal controls were recruited from the medical personnel, students and the visitors to the health services center who had no history of psychiatric illness and show normal profile of MMPI. The genomic DNA of patients and controls was analyzed by use of the (CTG)□ oligonucleotide and the repeat expansion detection(RED) method. The Mann-Whitney U test was used to compare the distribution of the number of CAG repeats among the groups. Results: when the bipolar disorder, major depressive disorder patients were compared with the control group, no significant differences were observed. Conclusions: Our results do not support the hypothesis that expanding CAG repeats are causing the observed genetic anticipation in bipolar disorders and major depressive disorders.

榮山江 水質保全에 관한 硏究

申盛義 조선대학교 환경연구소 1991 環境公害硏究 Vol.8 No.-

In this study, I porformed investigation to conservate for water quality of the Yeong San river. The monthly water analytical points are five station along the up-stream of the Yeong San river basin. I reported the analytical values of physical factors from 1988 to 1990 about pH., Wt., DO, BOD, COD, SS, T-N, and T-P.

Laminar Jet Absorber의 利用에 의한 CaCO₃-slurry中 에로의 So₂吸收에 關한 硏究

申盛義 朝鮮大學校 工科大學 1974 論文集 Vol.3 No.-

This absorber has been only used for studying systems without gas phase resistance. In this case, however, a modified laminar jet reactor has been built, in which the gas phase resistance easily can be either theoretically calculated or experimentally determined. In this reactor the SO₂-N₂system has been studied and especially the SO₂ absorption in CaCO₃-Slurry. It has been verified that in the gas phase the mass transport closely follows the penetration state. The rate of absorption of SO₂in CaCO₃-Slurry is slightly greater than that in water probably owing to reaction between SO₂and H₂CO₃??. The theoretically calculated and experimentally determined values of K?? are in good agreement with each other.

사람 M21 유전자 과발현 형질전환생쥐에서의 심근비후증

배성원,이원하,김철홍,박행기,이상철,고영혜,박승우,Takuro Arimura,Akinori Kimura,박정의 대한순환기학회 2003 Korean Circulation Journal Vol.33 No.12

일제지배 말기의 '노무관리'와 노동통제

이상의 한국역사연구회 2003 역사와 현실 Vol.- No.50

In this article, the Japanese imperial authorities' new plans after the breakout of the Pacific War, to mobilize every possible Korean workers and establish a stable control over the general Korean workforce in the name of a 'Wartime Labor Management' project, is examined. This project was designed essentially to counteract the workforce shortage. The primary objective of the Wartime Labor Control project was to enhance the laborers' efficiency and productivity by putting them under direct control of the Japanese Governor Genera1(of Korea), and tightened regulations employed by the authorities. It was essentially a labor control system under a Fascist state-like situation, in which the government oversees the overall labor control and individual corporations manage the workers. The Japanese imperial authorities assigned workers to production sites with strategical importance. The workers' own specialties were deemed irrelevant in the assignment process, and they were just required to adjust to the production environment immediately. The training drills were more of a mental session administering military rules and a sense of duty as a member of the Japanese imperial workforce into the minds of the laborers, than an educational one training skills. Through these procedures the Japanese imperial authorities were trying to effectively assimilate the Korean workers, and mobilize them into their war efforts. This oppressive model of laborer management, which was developed under the Fascist Japanese imperial occupation and designed solely to enhance productive efficiency, survived the Liberation and was established as one of the most distinct labor management policies of modern day Korea. As a result, instead of investing in proper technologies' development or in caring for the wellbeing of the workers, enhancing the labor efficiency became the most prominent goal in most cases, and a distorted version instead of a desirable relationship between the managers and the laborers was established.

[논문]다른 온도로 소성한 왕겨를 콘크리트 흔화재로 사용한 콘크리트의 강도특성에 관한 연구

신상엽,정의창,정유진,박문석,백계승,최세윤,김영수 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-

본 논문은 다른온도로 소성한 왕겨를 콘크리트 흔화재로 사용한 콘크리트의 강도특성을 알아보기 위한 것으로 물결합재비를 35% 로 고정하고 왕겨의 혼입률을 각기 달리하여 소성온도에 따른 압축강도 특성과 왕겨의 혼입률에 따른 강도특성을 평가하였다. 실험결과 왕겨가 혼화재로서 성능을 발휘하는 최저 온도가 600℃인 것으로 나타났으며, 700℃로 소성한 경우 가장 우수한 강도 값을 나타내었다. 또한 혼입률별 압축강도 특성에서는 혼입률 10% 에서 가장 우수한 강도발현을 나타내었다.

膜分離에 의한 海水의 淡水化에 관한 硏究

申盛義,李性琪,崔炯一,申大允,金永範,李抵憲,姜永周 조선대학교 환경연구소 1989 環境公害硏究 Vol.6 No.-

In this study, we made investigation into water permeation, solute separation, concentration and Na^(+), K^(+), Mg^(2+), Ca^(2+), Cl^(-), SO^(2)_(4)-, HCO^(-)_(3) ions separation of seawater by the revers osmosis process using a suitable semipermeable membrane. The different thickness of membranes were prepared. On heat treatment, temperature was 80℃ and thier effects were also investigated. The flat single module system was made to be capable of treating feed solution at 200-2000cc/min and 120 atm. The experimental results can be summerized as follows: 1) As the effective operating pressure increased, permeability of pure water proportionally increased. 2) As the exposure period of the manufactured membrane in air increased, permeation rate increased, but as the thickness of the membrane increased, permeation rate decreased. 3) The capacity for being reproductive of the manufactured membrane (CA: 30wt%, Formamide: 45wt%, Acetone: 25wt%) in their performance was less than 10-30% and agreed with that reported in the literature. 4) We could separated about 85-95% of salt ion in seawater using a flat single module system.

PET 표면의 TiO_(2) 도포에 의한 친수화 연구

오성상,윤세훈,이의수 東國大學敎 産業技術硏究院 2005 산업기술논문집 Vol.15 No.1

산화 금속의 얇은 막을 졸-겔 방법으로 폴리에스터 필름 상에 도포하여 표면의 친수성을 물접촉 각으로 측정하였다. 폴리에스터 필름의 표면 친수성은 이산화티타늄의 광촉매 활성에 의해 증진되었다. 바인더로 사용되는 젤라틴, 라텍스와 같은 친수성 고분자는 수분을 받아들여 친수화를 이루기에 장점을 지닌 반면, 폴리에스터 표면과의 부착력 강화에는 단점을 가지고 있다. 실란은 무기물 입자를 폴리에스터 표면에 부착시키기 위한 바인더로 사용되었으며 바인더로서의 기능을 어느 정도 보여주었다. 결과적으로 바인더의 선택이 폴리에스터와 이산화금속의 부착에 중요한 역할을 함을 알 수 있었다. Water contact angle of the polyester film coated by thin metal oxide, which was prepared via the sol-gel method, was measured to evaluate the surface hydrophilicity. Surface hydriphilicity of the polyester film was enhanced due to the photocatalytic activity of the titanium dioxide. Concerning to hydrophilic polymers like gelatin and latex, those chemicals were positive in moisture capture, but in negative in adhesiveness. Silane was used as a binder of the inorganic particles to the polyester film and was shown to be not poor. Other binders - e.g., gelatin, polyurethane primer(alkyd resin type), and etc. - are useful to bridge (or hybrid) polyester with metal oxide. Enhancement of the hydrophilic characteristics of the surface treated polymer substrate was shown in positive in this experiment. As a result, the binder property might be of importance in hybriding polyester with metal oxide.

RSS기반 블로그 에이전트를 사용한 교육용 블로그 구현

황의경,문양세,김혜숙,김진호,이상민 강원대학교 정보통신연구소 2007 정보통신논문지 Vol.11 No.-

More than 80% of the Internet users are familiar with blogs and exploit blogs as their primary communication tools in Korea. These blogs are widely used as a representative personal media service in educational applications as well as business marketing or information sharing applications. In this paper, we present an efficient mechanism of using blogs for educational applications. For this, we first investigate the major problems that the current educational blog sites have. We then propose a new notion of the blog agent that solves the problems and makes it easy to exploit blogs for educational applications. Contributions of the paper can be summarized as follows. First, we investigate the problems with respect to the homework management by analyzing the existing educational blog sites. Second, we present how we can solve the problems by using blog agent. Third, we show that, if exploiting the blog agent, we can easily design blog sites for homework, consultation, or lecture material management. Fourth, through a survey on current blog-related techniques, we select the RSS-based technique to implement our intelligent blog agent. Fifth, we implement the blog sites for homework, consultation, and lecture material management by using "Cyworld's Paper," which is one of RSS-based blog techniques.