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

신안 상서고분군 석재에 대한 암석학적 특성과 석재 유통 고찰

윤석태 ( Youn Seok-tai ),고영구 ( Koh Yeong-koo ),오강호 ( Oh Kang-ho ),김해정 ( Kim Hae-jung ),신자경 ( Shin Ja-kyeong ),김해경 ( Kim Hai-gyoung ) 한국도서(섬)학회 2018 韓國島嶼硏究 Vol.30 No.1

이 연구는 전남 신안군 상태도에 위치한 상서고분군 축조에 사용된 석재들에 대한 암석학적 특성과 채석 등 유통과정에 대해 고찰하고자 하였다. 고분 축조에 사용된 석재들에 대한 암석학적 특성 연구는 외관적 관찰에 의한 암석기재적 연구와 편광현미경 하에서 암석의 광물조성과 조직특성에 대한 연구 및 암석의 주성분 함량조성을 통한 지구화학적 연구를 수행하였다. 이 연구들과 함께 주변지질들과 관련하여 고분석재들의 채석과 이송 등에 대한 연구도 병행하였다. 고대로부터 신안군 일대는 한국-중국-일본을 연결하는 고대 해상교통로에 중요한 위치를 점하는 것으로 알려져 고분 축조에 사용되었던 석재 연구는 고대 해양사 측면에서 의미를 지닌다고 할 수 있다. 기재적 관찰에서 석재들은 중성암맥 기원인 안산반암을 제외하고는 대부분이 응회암류에 해당한다. 이들은 라필리응회암과 세립질 응회암으로 구분되는데 대부분 세립질 응회암에 속한다. 응회암 구성입자들은 각상에서 초각상이고 분급도는 불량하다. 세립질 응회암들은 매우 치밀한 조직을 보유하고 특히 라필리응회암의 불규칙한 이탈흔들은 타포니(tafoni)와 관련될 가능성이 있다. 응회암의 입자들은 사장석편과 암편 등이 주를 이루며 크기 범위가 광범위하다. 사장석들은 알바이트 쌍정이 잘 나타나고 격자쌍정을 이루는 미사장석들도 출현한다. 응회암의 치밀한 조직은 부분적으로 속성작용과 관련되는 것으로 여겨지며 다양한 풍화정도를 보인다. 또한, 미세한 석영맥들이 응회암들을 종횡으로 관통하고 있다. 상기한 상서고분군 석재들에 대한 주성분 원소 함량에 대한 지구화학적 연구에 의하면, 이들 응회암은 화산암류 관점에서 산성암계열에 근접한 중성암 계열 및 산성암계열에 해당시킬 수 있다. 이러한 함량분포 특성 상, 이 응회암들은 두 가지 군으로 나눌 수 있다. 그리고 TAS(total alakali vs silica) 분류에서 이 응회암들은 저알칼리암 계열에 도시된다. 고분축조에 사용된 응회암들은 주변의 암석과 매우 유사하며 석재들 자체도 광물조상과 조직특성에서 서로 유사정도가 높다. 일반적으로 응회암들은 판상특성, 가공의 용이성 및 상대적인 견고성으로 고분과 건축 등에 많이 이용되어 왔다. 이러한 결과들을 기반으로 고분축조에 사용된 응회암들은 산성암계열에 근접한 중성암계열 및 산성암계열 기원을 가지며 주변 암석에서 채석·이송된 것으로 추정된다. This study considers on petrological characteristics and distribution to building stones of Sangseo tumuli in Santae Island, Shin-an, Jeonnam. The petrological study on the stones includes visually petrographical descriptions, textural study by polarized microscope and geochemical analysis. Along with the study, distribution routes of the stones were traced based on the regional geology of the island. Since ancient times, the study area is important as a base on international maritime traffic route. Therefore, studies on the tumuli are meaningful for ancient maritime history. In visual observation, above building stones are of tuffs except for an andesitic porphyry considered as intermediate dyke. The tuffs are assigned to lapilli and fine ones. Their grains are poorly sorted and angular to very angular in roundness. In particular, the fine tuffs show very dense textures and take up the most part of the building stones. In addition, the stones have irregularly removed depressions inferred as the linkage to tafoni, in lapilli tuffs particularly. The tuffs are mainly of plagioclases laths, rock fragments and matrices and ranges widely in grain size. The plagioclases show mostly unambiguous albite twin. And, microcline crystals are observed in the tuffs too. Matrices in the tuffs are considerably dense and weathered. Dense texture in the rocks are related to diagenesis in part. In addition, thin quartz veins irregularly intruded the rocks vertically and horizontally. According to the geochemical analysis of building stones of above tumuli, the stones might be intermediate rock series near acidic rock ones and acidic rock ones in the correspondence of volcanics. Therefore, the tuffs probably grouped as two types and are assigned to subalkaline rock series by TAS diagram. Most the building stones mutually resemble in visual and textural characteristics. Tuffs are generally platy, easy in use and relatively hard. In addition, rocks very similar to the building stones are widely distributed in surrounding area. Synthesizing above results, it is considered that tuffs used in tumuli building are corresponded to intermediate rock series near acidic rock ones and acidic rock, and got from surrounding rocks.

쓰레기 매립장 주변 농촌 주민들의 삶의 질 연구

이명경,최준열,김인경,조영아,김영신,정혜진,김리나,이영규,조영태,Lee, Myung-Kyung,Choi, Jun-Yeol,Kim, In-Kyoung,Cho, Yeong-Ah,Kim, Young-Shin,Jung, Hye-Jin,Kim, Li-Na,Lee, Young-Kyu,Cho, Young-Tae 대한예방의학회 2006 예방의학회지 Vol.39 No.4

Objectives: This study aims to examine if a garbage dumping site has real and negative influence on the quality of life (QOL) for the nearby residents. The net effects of the residential distance from the garbage dumping site and from the garbage truck route were investigated for five domains of the QOL. Methods: Two hundred fifty seven Shin-dong Myeon residents, Chun-cheon Si, participated in a self-administrated survey. The Shin-dong Myeon garbage dumping site began operating in 1996. ANCOV A with generalized linear models and multiple regression analysis were performed. Results: Descriptive analyses show that a residence nearby a garbage dumping site is negatively associated with the physical and environmental domains of the QOL. The residential distance from the garbage truck route does not exert any significant effect on various domains of QOL, except for the environmental domain. On the multivariate analysis, the residents living near the garbage dumping site tended to have a significantly negative QOL in the physical and environmental domains. However, the distance from the garbage truck route did not show a significant nor substantial effect on the QOL. The demographic and socioeconomic control variables are associated with a number of the QOL domains, and their patterns are consistent with the general expectations. Conclusions: The results indicated that a garbage dumping site is considered to be an environmental hazard among the nearby residents according to the lower scores on the physical and environmental domains of the QOL. The findings from this study provide comprehensive understanding on the residents' QOL, and they may help politicians and policy makers make decisions for appropriate interventions.

남녀 고등학생의 교복과 자율복의 대한 태도 연구

김미정,김영숙,배지혜,신영옥,장명희,황인순 효성여자대학교 가정대학 학도호국단 1984 家政大論集 Vol.3 No.-

The purpose of this study was to investigate the attitude difference toward the school uniform, it was supposed that clothing acceptance was differentiated according to subjects. The subjects were grouped by 3 types which were students, teachers(school governors) and parents groups. The results were as follows; 1. Boy students reguired the more freedom of clothing than girls. 2. Teachers and parents groups considered that clothing affected student's behavior and self-esteem. 3. The acceptance of school plain dress was affected by atomosphere of home and school. 4. According to socioeconomic levels, there were differences in clothing acceptance and fashion acceptance.

알루미나에 흡착된 친핵제와 염화 옥틸과의 치환반응 양이온의 종류와 물 함량의 영향

김창배,신영문 단국대학교 1996 論文集 Vol.30 No.-

Substitution of n-octyl chloride by four different metal bromdes adsorbed on active alumina was investigated. LiBr and CaBr_2 exhibited good nucleophilicity toward substitution, while NaBr and KBr did not. Effect of added small amounts of water diminished the product yield and CaBr_2 was affected drastically. These observations were discussed in terms of solubility and activity coefficient.

TiO₂박막반응기에서의 2,4,6-trinitrotoluene(TNT)의 광촉매 분해

신기범,김영과 江原大學校 附設 環境硏究所 2002 環境硏究 Vol.19 No.-

Degradation of TNT(2,4,6-trinitrotoluene) using a UV/TiO₂thin film process was investigated in this research. The thin film was coated on the reactor surface by applying sol-gel method. Degradation of TNT at an intial concentration of 100㎎/L by photocatalytic reaction was 38%. it was 21%, however, without the photocatalytic reaction (UV only). In an effort to increase the rate of degradation, predetermined amount of methanol was used as a solvent and hydrogen peroxide was added to the thin film reactor. Methanol addi-tion of 20% by volume yielded the degradation rate as high as ca. 98%. However, the addition of hydrogen peroxide to the process which had received a 20% methanol resulted in a decrease of the degradation rate down to ca. 44%, providing no synergistic effect. The major by-products of photocatalytic TNT breakdown were identified as 2H-4,6DNT, 4H-2,6DNT, 2A-4,6DNT and 4A-2, 6DNT. The degradation pathway of TNT was in the order of -NO₂→-NHOH →-NH₂.

(Zn, Cd)S:Cu 형광체의 발광(PL, CL) 현상에 관한 연구

신영진,尹昌周,金富吉 全北大學校 基礎科學硏究所 1979 基礎科學 Vol.2 No.1

Photoluminescent and cathodoluminescent (Zn, Cd)S phosphors are prepared by firing at 850℃ in N_2 gas of atmospheric pressure for an hour. They are doped with (1) an activator CuS, (2) an activator CuCl, (3) a flux NH_4Cl, (4) both an activator CuCl and the flux NH_4Cl, an (5) not doped with either one. The crystal structure of ZnS phosphors powder is the mixed phase of cubic and haxagonal, while the powders of (Zn, Cd)S : Cu (Zn, Cd)S : Cu, Cl and (Zn, Cd)S phosphors are the hexagonal pattern under the same firing condition. Photoluminescent and cathodoluminescent cells are made with these phorsphors and their emission spectra are measured at room temperature after these materials are excited with 3650 A˚ light and cathode rays. These spectra are shifted from blue (green) to red wavelength as the CdS content of the phosphors is increased, The NH_4Cl flux is found to help the doping of the impurity energy level and it has SA center in SA emisson. The following two results are also observed about (Zn, Cd) : Cu;(1) the values of lattice parameter a are varied linearly with the molar fraction of (Zn,Cd) (2) the impurity changes with quadratic curve when the molar fraction is varied.

출생 직후 호흡부전으로 사망한 Thanatophoric dysplasia 1례

신상원,김은영,박영봉,박상기,송창훈 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.3

Thanatophoric dysplasia is a severe skeketal disorder characterized by extremely short limbs and folds of extra skin on the arms and legs, narrow chest, small ribs and underdeveloped lungs. Affected infants are usually stillborn or die shortly after birth from respiratory failure. We experienced a case of thanatophoric dysplasia died shortly after birth from respiratory failure.

동결속도제어에 의한 동결건조기 성능개선 및 동결건조품의 물리적 특성에 관한 연구

김정한,신영우,김민용,박기원,강정길 여수대학교 1998 論文集 Vol.12 No.2

It is essential to establish optimum operating condition in order to decrease freeze drying time and energy cost on freez-drying process. In this study freezing point, thermal condutivity and permeability of vapour on freeze-drying process of coffee solution were measured. The results of abtained were summarized as follows: 1) thermal conductivity were not affected by freezing rate but were increased with increasing concentration of coffee solution 2) permeability of vapour was increased with decreasing freezing rate and concentration of coffee solution These result suggested that freezing temperature of freeze-drying material must be determined through measuring freezing point of material for the purpose of saving energy cost and ahortening freezing time 1) thermal conductivity depend on solids porosity and was not concerned with size and shape of pore 2) permiability decrease with lowering freezing temperature beacuse radius of freeze drying layer was smaller and permiability decrease with higher concentration because of porosity was decreased

치아 맹출전 시행한 기관 삽관이 유치열기에 미치는 영향에 대한 증례보고

신윤경,Hyun, Hong-Keun,김영재,김정욱,장기택,이상훈,김종철,한세현 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.3

유치 맹출전에 치조융기에 가해진 외상은 유치의 맹출 지연 및 형태이상,치배의 변위 등을 일으킬 수 있으며 심한 경우 구개의 흠 형성,절치의 결함 및 후천성 구개열 등을 야기할 수 있다. 본 증례는 치아가 맹출하기 전에 수차례의 기관 삽관을 시행한 병력이 있는 심한 저체중아에서 맹출지연,형태이상,법랑질 저형성,영구치 치배 등의 변위가 관찰되어 이를 보고하는 바이다. Delayed eruption and abnormal morphology of the primary incisors following intubation may be due to follicular displacement and localized trauma caused by the process of intubation. Result of such damage included palatal groove formation, defective incisors and acquired clefts. This clinical report presents effect of intubation on the primary dentition of premature low-birth-weight children prior to tooth eruption.