韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

保存血의 腐敗産物에 依한 에틸알콜 生成濃度에 關한 硏究(Ⅱ)

張成吉,金英雲,柳在薰,權五星,朴世延 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-

生體血의 保存環境과 腐敗産物에 依한 血中알콜濃度變化에 關한 硏究

張成吉,金英雲,柳在薰,吳世珍,權五星,朴世延 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

농축배양 시료를 이용한 trichlorophenols의 혐기성 분해

송성주,권오섭 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-

2, 3, 4-trichlorophenol (TCP)에 8∼17개월 적응시킨 장림하수처리장의 혐기성 소화조 슬럿지와 김해시 쓰레기매립장 침출수를 사용하여 몇 가지 TCPs의 환원형 탈염소반응 및 환경요인의 영향을 연구하였다. 비적응 시료에 비해 적응 시료의 TCPs 분해는 지체기의 단축으로 빠른 분해 속도를 나타냈으며, 2, 3, 4-TCP는 초기부터 빠른 분해를 보인 반면 2, 3, 6-TCP나 2, 4, 6-TCP는 9일 정도의 지체기를 나타냈다. TCPs의 혐기성 분해에 미치는 head space gas의 H2 조성비와 혐기성 대사저해제의 영향은 접종시료에 따라 다르게 나타났다. CO₃²-, SO₄²-, NO₃-를 전자수용체로 황산염환원 조건에서 다소 느리게 분해되었다. 2, 3, 4-TCP에서는 2, 3-DCP, 2, 3, 5-TCP에서는 2, 5-DCP, 2, 3, 6-TCP에서는 2, 3,-DCP, 2, 4, 6-TCP에서는 2, 4,-DCP가 주된 부산물로 검출되었으며, monochlorophenols와 phenol도 적은 양이지만 지속적으로 검출되었다. Anaerobic inocula of the anaerobic digester sludge from Jangrim municipal wastewater treatment plant and the leachate from Kimhae landfill site were enriched with 2, 3, 4-trichlorophenol (TCP) for a period of 8∼17 months. As compared with the unacclimated samples, the anaerobic degradation rates of TCPs by the acclimated samples were fast. The degradation of 2, 3, 4-TCP occurred without a lag period, but 2, 3, 6-TCP and 2, 4, 6-TCP had a lag period of 9 days each. The effects of headspace gas composition and inhibitors of anaerobic metabolisms such as methanogen and sulfate reduction were not so significant and varied with the kinds of inoculum. Anaerobic biodegradation of TCPs occurred under methanogenic, sulfidogenic, and denifrifying conditions were occurred. Major dechlorination by-products of 2, 3, 4-, 2, 3, 5-, 2, 3, 6-, and 2, 4, 6-TCPs were 2, 3,-, 2, 5-, 2, 3,-, and 2, 4-DCPs, respectively, and small amounts of monochlorphenols and phenol were also detected.

A. 高校 科學 (生物·地球科學) 및 數學科 探究學習의 評價模型 定立과 評價紙 開發

李相協,權炳奎,林在圭,孫文求,吳岱燮,楊洪準,梁承榮,姜用熙,林成圭,金正遠,金吉民,兪正在 경북대학교 과학교육연구소 1982 科學敎育硏究誌 Vol.6 No.-

Currently the evaluation of high school science and mathematics learning has been too much knowledge-centered without concerning the inquiring ability or scientific attitude. This study, therefore, was made for the purpose of establishing of evaluation model for high school science (biology and earth science) and mathematics learning and its evaluation items. In this paper, the research was done about three fields, biology, earth science and mathematics. 1. For the biology, the evaluation methods of inquiry learning were studied with the foreign references, and proper evaluation items were suggested. 2. For the earth science, after analizing 5 kinds of earth science textbook of current using in high school, essential 19 items were selected. 5 of them were tested in test group and control group, then, the results were analized. 3. For the mathematice, the teaching elements of「Set」and「Flow chart」in mathematics (Ⅰ) were selected and structured. Detailed teaching objects were established and evaluation items were introduced.

Nutrients Release from Seo-Naktong River Sediments and Effect of Some Environmental Parameters in the Continuous Flow System

Yoon, I.-K 韓國陸水學會 1999 생태와 환경 Vol.32 No.1

엔진윤활유 중 Ethylene Glycol의 용제추출후 bistrimethylsilyltrifluoroacetamide(BSTFA)를 이용한 GC/MS 분석에 관한 연구

이준배(Joon-Bae Lee),권오성(O-Seong Kwon),유재훈(Jae-Hoon You),손성건(Shungkun Shon),성태명(Tae-Myung Sung),팽기정(Ki-Jung Paeng) 한국트라이볼로지학회 2012 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.28 No.6

For proper functioning, general machines usually need lubricant oil as a cooling, cleaning, and sealing agent at points of mechanical contact. The quality of lubricant oil can deteriorate during operation owing to various causes such as high temperature, combustion products and extraneous impurities. In this study, a heavy load stopped during operation, and the oil was analyzed to check whether any impurities were added. Extraction using acetonitrile followed by reaction with BSTFA(bistrimethylsilyl trifluoroacetamide) showed that, trimethylsilylated ethylene glycol was present in the lubricant oil. To quantify the ethylene glycol in the oil, deuterium-substituted ethylene glycol, which acted as an internal standard, was added to the sample and then extracted with the solvent. Next, the extract was reacted with the derivatizing agent(BSTFA) and then analyzed with GC/MS. The detection limit of this method was found to be 0.5 ㎍/g and the recovery of oil containing 20,000 ㎍/g of ethylene glycol was measured to be 94.8%. A damaged O-ring and eroded cylinder liner were found during the overhaul, which implied the leakage of coolant containing ethylene glycol into the lubricating system. The erosion of the cylinder liner was assumed to be due to cavitation of the coolant in the cooling system.

만성 정신질환자 가족의 우울증상 및 관련 요인 조사

심민영,임선진,김진훈,권오향,조성진,김석주,김계현,이병학,한덕현 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.4

Objectives : It has been reported that caregivers of patients with chronic mental illness including schizophrenia are in higher risk for psychological and physical health problem. This study was performed to evaluate the depressive symptoms and associated factors in caregivers of patients with chronic mental illness. Methods : The subjects were 77 unaffected caregivers (30 parents, 30 siblings, 10 offspring, and 7 spouses) of patients with chronic mental illness (62 schizophrenia, 4 schizoaffective disorder, 11 bipolar disorder) and 100 healthy controls. Depressed mood was assessed by Beck Depression Inventory (BDI) in all subjects. For their sick family members, clinical factors including psychotic symptoms using the Positive and Negative Syndrome Scale (PANSS), duration of illness, number of admission were assessed. Results : The mean BDI score of the caregivers was significantly higher than that of control subjects (11.2±11.6 and 8.0±17.5). Given that 23.4% of family group and 23.0% of control group are attributed to mild to moderate depressed state and 22.0% of family group and 8.0% of control group to above moderate depressed state, significant depressive symptom is more frequently observed in family group. The mean BDI score of parent group was higher than that of sibling group controlling for sex and age. In the parent group, BDI scores are positively correlated with age while the offspring and spouse group had negative correlation between BDI scores and age. Higher age, lower socioeconomic state, more severe positive symptom scores of patients were potential predictors for BDI scores of caregivers. Conclusion : This study showed that caregivers of patients with chronic mental illness have significant depressive symptoms. It may be suggested that depressive symptoms of caregivers are associated with aging, low socioeconomic state, and severe positive symptom rather than chronicity of their sick family members.

工業敎育大學 敎育改善에 關한 硏究(Ⅱ)

孟琦錫,洪元杓,任洪彬,李廷玟,朴萬植,李載元,金八圭,權五憲,成世鎭,朴東徹,金太均,李定根 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.1

Since the College of Industrial Education of Chungnam National University took charge of technical teacher preparation in 1977, much efforts have been concentrated on the activities for creating favorable educational environments in terms of curricula, pedagogic affairs, inner and outer facilities, etc. In this study some imposed barriers which are likely to hinder this college from achieving better education were identified and analysed. Considerably large scale of the student enrollment in comparison with the market demand is a prevailing issue which causes an adverse effect for clarification of the educational goal of the college and another problem is concerned with the student entry criteria which do not require the pre-experiences in the field. Under this circumstances, a guide line to improve the teacher education is recommended as follow; 1) The number of the student enrollment should be adjusted to meet the minimum range in the wave of the technical teacher demand projection and the shortage of teacher could be covered by the graduates from the shortterm courses in this college. 2) The current curriculum is accordingly recommended to be diversified taking into consideration the qualification of the student. The suggested consists of four-year regular course, one-year course, and six-month course and the short-term courses are provided to induce the experienced people from industries. 3) In order to have teachers adjust themselves to changing technology, education on sound and fundamental knowledges should be provided in the pre-service education course and education on advanced knowledges and applied theories deferred to the in-service training course. 4) In the four-year pre-service education, the general education and pedagogic subjects are to be drastically intensified from 18 credits and 22 credits up to 40 credits and 30 credits respectively.

Organic Phenolic Configurationally Locked Polyene Single Crystals for Electro-optic and Terahertz Wave Applications

Kwon, O-Pil,Kwon, Seong-Ji,Jazbinsek, Mojca,Brunner, Fabian D. J.,Seo, Jung-In,Hunziker, Christoph,Schneider, Arno,Yun, Hoseop,Lee, Yoon-Sup,Gü,nter, Peter WILEY-VCH Verlag 2008 Advanced functional materials Vol.18 No.20

<P>We investigate a configurationally locked polyene (CLP) crystal 2-(3-(4-hydroxystyryl)-5,5-dimethylcyclohex-2-enylidene)malononitrile (OH1) containing a phenolic electron donor, which also acts as a hydrogen bond donor. The OH1 crystals with orthorhombic space group Pna2<SUB>1</SUB> (point group mm2) exhibit large second-order nonlinear optical figures of merit, high thermal stability and very favorable crystal growth characteristics. Higher solubility in methanol and a larger temperature difference between the melting temperature and the decomposition temperature of OH1 compared to analogous CLP crystals, are of advantage for solution and melt crystal growth, respectively. Acentric bulk OH1 crystals of large sizes with side lengths of up to 1 cm with excellent optical quality have been successfully grown from methanol solution. The microscopic and macroscopic nonlinearities of the OH1 crystals are investigated theoretically and experimentally. The OH1 crystals exhibit a large macroscopic nonlinearity with four times larger powder second harmonic generation efficiency than that of analogous CLP crystals containing dimethylamino electron donor. A very high potential of OH1 crystals for broadband THz wave emitters in the full frequency range of 0.1–3 THz by optical rectification of 160 fs pulses has been demonstrated.</P> <B>Graphic Abstract</B> <P>Configurationally locked polyene OH1 crystals containing a phenolic electron donor exhibit large second-order nonlinear optical figures of merit, high thermal stability, and very favorable crystal-growth characteristics. A very high potential of OH1 crystals for broadband THz wave emitters in the full frequency range of 0.1–3 THz by optical rectification of 160 fs pulses has been demonstrated. <img src='wiley_img/1616301X-2008-18-20-ADFM200800633-content.gif' alt='wiley_img/1616301X-2008-18-20-ADFM200800633-content'> </P>