CdSe ; Cu 광전도 cell 제작

신영진,정태수,신현길,김택성,정철훈,이훈,신영신 경북대학교 센서기술연구소 1992 센서技術學術大會論文集 Vol.3 No.1

SWAT 모형을 이용한 태화강유역 장기유출 분석

신현석(Shin Hyun Suk),강두기(Kang Du Kee),김균태(Kim Kyun Tae) 대한토목학회 2004 대한토목학회 학술대회 Vol.2004 No.10

학습장애인의 은유능력

한태현,신현기 한국특수교육문제연구소 2003 특수교육저널 : 이론과 실천 Vol.4 No.1

일반적으로 은유는 수사학에서 사용되고 있는 언어의 한 표현방식 정도로 인식되어져오다가,1960년대,Black 이 은유에 대해 새로운 철학적 이론으로서의 견해를 제시함으로써 비로소 철학적 입장으로서의 언어 즉,언어철학의 한 중요한 이슈가 되어지고 있다. 은유에 대한 그러한 연구들은 지시적,기호적으로 언어를 이해하는 것으로부터,확장 성장적, 실존적으로서 언어를 이해하는 것이 가능하도록 하였다. Ricocur의 주장에서 보는 바와 같이 은유는 자기 창조적 언어이자,상상적 그리고,역동적 언어이다. 이러한 기능을 가진 은유는 인간으로 하여금 실존으로 나가게 하는 언어로서의 기능을 하게될 수 있다. 또한,이 은유는 초인지적 도구로서 언어와 사고를 연결해 주는 역할을 하게 한다. 이를 연구자는 암묵적 지식으로 보았다. 인간은 자가가 표현할 수 있는 것보다 더 많은 것을 알고 있다는 폴라니의 말파 같이,은유는 현상적,표면적,과학적으로 측정할 수 있는 영역 그 이상의 언어이다. 앞으로 언어장애연구에 있어서,지금까지 해왔던 것처럼,표현된 언어이기는 하지만 알아듣기 어렵고,일반적 언어규칙을 따르지 않는 것에 대한 원인과 그것에 근거한 치료 방법을 모색하는 것도 중요하지만,나아가 드러나지 않는 아동의 언어와 사고에 대해서도 관심을 두고 연구한 필요가 있다. 특히 은유에 대한 연구는 이러한 암묵적 지식 연구의 대표적인 방법으로서,언어학적 측면은 물폰 철학적,심리학적 측면에서 중요한 기능을 할 것으로 판단된다. 마지막으로,이러한 은유적 능럭을 학습장애인도 소유하고 있을 것이라는 주장을 하면서,그들에 대한 고전적인 전통적인 지능에 입각한 시각을 비판하고자 하였다. This short essay attempts to approach metaphor as a multidisciplinary subject across different school. Although the issue is wide-ranging and complex, the growing philosopruca1 significance of metaphor parallels its increasing ìn educational and psychological significance. This essay provides the groundwork, context and locus for the following discussion, seeking to elucidate and criticÎze various different views on metaphor, and attempting to explore and develop the nature of metaphor. lVletaphor understood as a cognitìve event opens up a new phìlosophical paradigm in the study of language. Metaphor is then irreducible and, to an extent, inexplicab1e. This essay also suggest the ro1e of metaphor. Finally, it is hied to argue that people with 1eaming difficulties also have the metaphorical competence.

초등학생의 Molar Incisor Hypomineralization 유병률과 제1대구치 치아우식증 및 수복상태 조사

신종현,안울진,김신,정태성 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.2

Molar Incisor Hypomineralization(MIH) have recently gained intensive research interests and various clinical trials. Most prevalence, etiology, treatment studies in MIH were carried out in the European countries, and data from the Korean were seldom. This study aimed to investigate the prevalence of MIH and the status of dental caries and treatment on the first permanent molars in primary school children. For this study, 1.344 primary school students in Busan and Ulsan cities were examined directly the permanent incisors and first molars. The results of the survey were as follows: 81 MIH cases were identified among 1.344 cases. The prevalence of MIH in this group of children was 6.0%. Children with MIH showed a significantly higher DMFT value for permanent teeth than children without MIH. The mean number of decayed, missed, and filled in 1st permanent molars(DMFT index) was 1.17. The rate of children with restoration on 1st permanent molar was 13.6% and the sequence of restoration materials was as follows: composite resin, amalgam, gold inlay. Molar Incisor Hypomineralization(MIH)에 관하여 최근 많은 연구적 관심이 집중되고 여러 임상적 대처방법들이 제시되고 있다. 이미 세계적으로는 MIH의 빈도, 병인, 치료 등에 관한 많은 연구보고가 있었으나, 우리나라에서는 이에 대한 관심이 아직 미미한 것으로 사료된다. 본 연구는 초등학생의 MIH 유병률과 제1대구치 우식 및 치료 실태에 대하여 조사할 목적으로 시도되었다. 부산 및 울산광역시에 거주하는 1,344명의 초등학생을 대상으로, 상하 제1대구치와 전치부를 직접 시진하여, MIH 유병률, 제1대구치 우식경험지수와 치료 상태를 조사하여 다음과 같은 결과를 얻었다. 총 1,344명 의 조사 대상 중 81명에서 MIH가 나타나, 유병률은 6.0%를 보였으며, MIH에 이환왼 어린이의 제1대구치 우식경험지수는 비이환군에 비해 통계적으로 유의하게 높았다(P<0.05) 한편, 제1대구치 우식경험지수는 1.17개로 나타났다. 조사 대상 제1대구치의 13.6%가 수복되어 있었고, 수복재 별로는 복합 레진, 아말감, gold inlay의 순이었다.

카올린에서 추출한 Silica로부터 탄소 환원질화에 의한 질화규소의 합성

신현택,형유업,박찬욱,배원태 慶尙大學校生産技術硏究所 1987 生産技術硏究所論文集 Vol.3 No.-

Nitriding behavior of the mixtures of amorphous silica extractracted from San Chung White kaolin and activated carbon Were studied by varying the carbon content, reaction temperature, and time under N₂atmosphere. Experimental results obtained from XRD, SEM and TEM indicated that the nitridation of the mixtures initiated below 1200℃ and mullite, silicon oxynitride, β-Sialon, β-SiC, and α-and β-Si₃N₄were identified as reaction products. Optimum nitridation condition of extracted silica were as follows. 1. Carbon/Extracted silica (in weight ratio)=3. 2. Reaction temperature; 1350℃ 3. Reaction time ; above 1hour.

정향 수침액에 의한 아나필락시의 억제 효과

신태용,김상현,이석봉,엄동옥,임종필,이은희,김형민 우석대학교 의약품개발연구소 1996 藥學硏究誌 Vol.1 No.-

The current study evaluates the capacity of Caryophylli Flos water extract(CFWE) to regulate immediate allergic reaction by control of histamine release. CFWE was found to exhibit a ingibitory activity on the compound 48/80-induced anaphylaxis. CFWE inhibited the serum histamine release induced in anaphylaxis by compound 48/80. CFWE was also showed a dose-depent activity on the conpound 40/80-induced histamine release from the highly purified population of Alcian Blue-positive peritoneal mast cells. This result suggest that CFWE may be useful for the prevention and treatment of allergy related disease.

구리 독성에 기인하는 비정상적인 어류행동의 신경생화학적 분석

신성우,조현덕,전태수,김정상,이성규,고성철 한국환경독성학회 2003 환경독성보건학회지 Vol.18 No.2

The goal of this study is to develop a biomarker used in monitoring abnormal behaviors of Japanese medaka (Oryzias latipes) as a model organism caused by hazardous chemicals. Japanese medaka was treated by copper of appropriate sublethal concentrations after starvation for 48 hr, The untreated individuals showed common behavioral characteristics (i.e., smooth and linear movements). Locomotive activity of the fish was monitored using an image processing and automatic data acquisition system. When treated with copper (100 ppb), the fish showed shaking patterns more frequently. As the concentration of copper increased to 1,000ppb, activity decreased, and the fish showed an erratic movement. Fish were exposed to copper at various concentrations (0, 100 and 1,000 pph) for 24 hrs, and acetylcholine esterase (AChE) activity was observed. When fish were exposed to 1,000 ppb of copper, the body AChE activities appeared to decrease but the head AChE activities showed little change. Expressions of tyrosine hydroxylase (TH) protein in the different organs from both head (brain) and body(kidney) portions affected by the copper treatment were analyzed using immunohistochemical technique compared with control. Five organs of the fish (olfactory bulb, hyothaiamus, optic lobe, pons and myelencephalon regions) showed a relatively strong TH protein expression in the control experiment. A differential expression of TH, however, was observed in the treatment (100 ppb and 1,0M ppb). The treatment (1,000 ppb) significantly suppressed TH protein production in the brain regions. In kidney, however, the same treatment caused little suppression compared with the control. Copper appeared to be less effective in suppression of TH than diazinon, a known TH suppressor. It was concluded that TH could be used as a potential biomarker to monitor the acute copper toxicity in Japanese medaka.

급성 심근경색 초기에 도플러 심초음파를 이용한 좌심실 이완기 기능의 평가

신원용,김주성,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Background : Congestive heart failure after acute myocardial infarction relate to left ventricular systolic sysfunction. Also, left ventricular diastolic function contribute to heart failure. The aims of this study were, firstly to characterize left ventricular diastolic function by transmitral flow velocity, and secondly to study the significance of Doppler measurements in relation to the development of heart failure in the early phase of myocardial infarction. Method : Pulsed Doppler echocardiography of transmitral flow was assessed in 34 patients with acute myocardial infarction. According to the Doppler transmitral flwo velocity profile, the study patients were assigned to the three groups: normal filling pattern (DT > 140ms, IVRT < 100ms), relaxation abnormality (DT > 140ms, IVRT ≥ 100ms), pseudonormal or restrictive pattern (DT ≤ 140ms). Also, on the basis of the presence of heart failure during first week of hospitalization, the patients were divided into two groups: patients with no sign of heart failure (Killip class Ⅰ) and heart failure (Killip class Ⅱ-Ⅳ). Results : Of the 34 patients studied, 10(29%) were normal filling pattern, 17(50%) abnormal relaxation and 7(21%) were restrictive patterns. The left ventricular ejection fraction(EF, 40 ±6%) of restrictive pattern was significantly lower than that of normal filling pattern of abnormal relaxation(p < 0.01). And, the IVRT, DT, E/A and left ventricular EF were reduced in patients with heart failure(14 patients) compared to no sign of heart failure(20 patients)(p<0.05). Of the patients with heart failure, IVRT and left ventricular EF were reduced in patients with DT≤140 ms compared to DT> 140ms(p=0.001). Conclusion : Left ventricular diastolic dysfunction is present early after onset of symptoms of acute myocardial infarction. Assessment of left ventricular diastolic function complements measurements of systolic function in the evaluation of cardiac function. DT, IVRT, E/A and left ventricular EF are useful predictors for development of congestive heart failure following acute myocardial infarction.

직연신 방사과정에서의 폴리프로필렌 구조해석 : 분자량 및 권취속도에 따른 영향 Effect of Molecular Weight and Take-up Velocity

신현세,이태균 단국대학교 1998 論文集 Vol.33 No.-

Abstrack : The development of the structure of polypropylene fibers during the direct drawing melt spinning process was analyzed by comparing fibers which have gone through the whole direct drawing melt spinning process and fibers in which the drawing step was omitted. The relative contribution of the drawing step was evaluated so that the information on the stages of development of the structure can be utilized as the foundation for future research on functional or high performance fibers. Four different molecular weights and take­up speeds were utilized to study the effect of these variables on the development of the structure. The samples taken up omitting the drawing step were designated as undrawn fibers and the fibers in which the drawing was carried out as drawn fibers. When the properties of the drawn fibers were taken as reference and the degree of structure formation in the undrawn fibers described by the percentage therof, 99, 85 and 95% of the density crystallinity and crystalline orientation had already developed prior to the drawing step. In the other hand the overall orientation was found to be more dependent on the drawing process, with about 64-73% of the orientation being developed in the drawing step and 26.8-36.1% being developed prior to the drawing step. The amorphous orientation of the undrawn fibers exhibited a negative value suggesting that the rotation of lamella to the final structure occurs in the drawing step. The highest tenacity obtained in this experiment was 4.5g/den and the highest modulus 25.4g/den when PP of Mn=230,000 was spun at 800m/min.

Fluoranthene 독성에 기인하는 비정상적 어류행동의 신경생화학적 분석

신성우,조현덕,전태수,김정상,이성규,고성철 한국환경독성학회 2003 환경독성보건학회지 Vol.18 No.2

Fluoranthene, a common polycyclicaromatic hydrocarbon (PAH), exhibits phototoxicity which may affect aquatic organisms, The eventual goal of this study is to develop a biomarker of Japanese medaka (Oryzias iatipes) used in monitoring hazardous chemicals in the ecosystem. In this study we investigated neural toxicity of fluoranthene in Japanese medaka (Oryzias latipes) along with comparative analysis of corresponding behavioral responses. The untreated individuals showed normal behavioral characteristics (i.e' smooth and linear movements). The treated fish, however, showed stopping and abrupt change of orientation (100 ppb), and severely reduced locomotive activity and enhanced surfacing activity (1,000ppb). Treatment of the medaka fish with fluoranthene caused a significant suppression of acetylcholine esterase (AChE) activities in the body portion but not in the head portion. When fish were exposed to 1,000pph of fluoranthene for 24hr, the body AChE activities decreased from 126.±31.89 (nmoles substrate hydrolyzed per min per mg protein) 10 49.51 ± 11.99. Expressions of tyrosine hydroxylase (TH) protein in the different organs from both head and body portions were comparatively analyzed using an immunohistochemical technique. Five organs of the medaka fish showing a strong TH protein expression were the olfactory bulb, hypothalamus, optic lobe, pons and myelencephalon regions. This study provides molecular and neurobehavioral bases of a biomonitoring system for toxic chemicals using fish as a model organism.