야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

Liquid‐Crystalline Blue Phase Laser with Widely Tunable Wavelength (Adv. Mater. 21/2013)

Hur, Sung‐,Taek,Lee, Bo Ram,Gim, Min‐,Jun,Park, Kyung‐,Won,Song, Myoung Hoon,Choi, Suk‐,Won WILEY‐VCH Verlag 2013 ADVANCED MATERIALS Vol.25 No.21

<P>A liquid‐crystalline blue‐phase laser with a tunable photonic bandgap (PBG) of over 150 nm and a wide temperature range is demonstrated by Myoung Hoon Song and Suk‐Won Choi on p. 3002. A lasing peak shift of more than 100 nm is realized due to the large PBG shift of the liquid‐crystalline blue phase. The shift in the lasing wavelength was reversible during repeated temperature changes over the entire stability range of the liquid‐crystalline cubic blue phase. </P>

초음파탐상 PD-RR Test의 통계적 신뢰도 평가 (Ⅲ) : a Round Robin Test Reesult (Part Ⅲ)

박익근,박은수,김현묵,박윤원,강석철,최영환,이진호 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

국내 원전의 건전성 및 안전성 확보에 직결되는 자동 초음파검사의 신뢰도 및 검사시스템의 기량을 평가하기 위해 자동UT-PD RRT를 수행하였다. 수행된 RRT의 조건은 2001년 수동 PD-RRT에 적용된 설계변수와 동일하다. 본 연구에서는 자동 UT의 결함검출확률 및 오판확률과 결함크기측정에 대한 불확도 분석을 이용하여 자동 초음파검사의 통계적인 신뢰도를 평가하고 수동 UT PD-RRT의 결과와 비교하여 기량을 검증하고자 한다. 이러한 연구결과를 토대로 향후 각종 비파괴검사에 대한 RRT를 수행하여 기술수준을 파악하고 비파괴검사기술의 발전을 도모할 수 있을 것으로 판단된다.

원자력발전소 PSI/ISI 데이터 관리를 위한 지능형 데이터 베이스 프로그램 개발

박은수,박익근,엄병국,박윤원,강석철 韓國非破壞檢査學會 1998 한국비파괴검사학회지 Vol.18 No.5

Windows 95 환경하에서 PSI/ISI 데이터의 효율적 관리를 위한 종합지원시스템의 구축과 다원적평가와 분석이 가능하고, 비파괴검사에 의한 원전기기의 건전성 평가시 규제측면에서 기술적인 지원을 할 수 있는 고리 원전 PSI/ISI 데이터 베이스 구축과 프로그램을 개발하였다. 이 프로그램을 활용하면 현재까지 수행된 고리 원전 PSI/ISI의 수행현황과 지금까지 발견된 결함에 대한 조사분석이 가능하며, 향후 국내 PSI/ISI결과의 자료분석이 가능한 전문가 시스템(expert system)개발에 한단계 접근하게 되었다. 그리고, PSI/ISI에서 발견된 결함에 대한 조사분석 결과를 근거로 결함의 종류, 형태, 처리방법 등에 대한 자세한 분석을 통하여 국내 원전 PSI/ISI 결과의 확률론적 신뢰도 평가, 또는 확률론적 안전성평가를 위한 결함검출확률곡선의 작성과 위험도에 근거한 가동중검사제도의 도입에 필요한 기초 자료를 제공하였다. 더 나아가 지금까지의 자료분석을 바탕으로 보다 경제적이며 신뢰성이 높은 PSI/ISI의 수행으로 원전 압력경계기기의 건전성과 신뢰성 확보 및 수명예측을 위한 기초자료를 제공하였다. For an effective and efficient management of large amounts of preservice/inservice inspection(PSI/ISI) data in nuclear power plants, an intellegent Windows 95-based data management program was developed. This program enables the prompt extraction of previously conducted PSI/ISI conditions and results so that the time-consuming data management, painstaking data processing and analysis in the past are avoided. The program extracts, and the associated remedies. Furthermore, additional inspection data and comments can be easily added or deleted for subsequent PSI/ISI operation. Although the initial version of the program was applied to Kori nuclear power plant, this program can be equally applied to other nuclear power plant. And also this program can be used to offer the fundamental data for application of evaluation data related to fracture mechanics analysis(FMA), probabilistic reliability assessment(PRA) of PSI/ISI results, performance demonstration initiative (PDI) and risk-informed ISI based on probability of detection(POD) information of ultrasonic examination. Besides, the program can be further developed as a unique PSI/ISI data management expert system that can be apart of PSI/ISI data management expert system that can be a part of PSI/ISI Total Support System(TSS) for Korean nuclear power plants.

합천지역 농촌생활용수 암반지하수의 수질과 분포암석과의 관계연구

박현주,박종남,박인석,이재경,한원태 동아대학교 환경문제연구소 2006 硏究報告 Vol.28 No.1

As of the end of 2001, even though about 89% of the population throughout the country are blessed with water service, areas of seashore, island and parts of inland are still in difficulties with drinking water. For this reason, the water resources project for stable supply by developing groundwater has been conducted since 1992, under the auspices of Ministry of Agriculture & Forestry. As of 2003, a total of 594 project areas have been completed in the Gyeongsang Province by the KARICO Gyeongnam Branch. Among these, 57 samples in the Hapcheon area developed since 1999, were chosen for chemical analysis of groundwater developed in varieties of rocks. As a result, there appears excessive fluorine in the granite, gneiss and diorite in this area. Correlation analysis between rock type and groundwater chemistry shows that the fluorine has high correlation with Fe and aluminum in diorite, and nitrate nitrogen in the andesite rock, while hardness, total solids and SO4+ have high correlations each other not only in sedimentary rocks but also in all other types of rocks. It has been known that the TDS (fluorine, hardness, total solids, and SO4+) of groundwater increase with depth due to water- rock interaction by increasing the amount of pumping rate at the well. However, in this study, the well depth and groundwater chemistry show little correlation in between. This may be partly due to limited number of samples used in the study with a total of 46 points suitable for drinking water. It may be thought that well distributed sampling points with more samples throughout the whole area should be collected for analysis, so as to increase reliability in the result.

휘안광의 부선특성에 관하여

박경호,오재현,곽창섭,심원석 연세대학교 산업기술연구소 1980 논문집 Vol.12 No.2

The authors investigated thoroughly the flotation characteristics of stibnite. The flotation behavior of this mineral was carried out by using modified hallimond tube with various xanthates as a collector and modifying agents such as copper sulphate, lead acetate, sodium sulfide, zinc sulphate, sodium cyanide, sodium sulfite and potassium dichromate. The main results obtained in this experiments are summarized as follows; (1) Stibnite shows that it has maximum floatability in pH range 4.0 to 8.0. (2) Stibnite is activated by copper sulphate and lead acetate. (3) Potassium dichromate is an effective depressing agents in stibnite-xanthate system in pH range 4.0 to 6.0. (4) In the pH range in which the zinc sulphate is preciptated by hydroxide, stibnite is depressed effectively (5) Stibnite is depressed by sodium sulfide in alkaline solution.

효과적인 신뢰성예측의 기초에 관한 연구

박석환,정원 한국의사결정학회 1997 경영과학연구 Vol.6 No.-

The proper use of reliability predictions in assessing the design reliability of components, assemblies, and final products is a frequently disputed issue among engineers. This paper presents the right methods of a reliability prediction and how it may be used. We believe that the presented methods will help engineers an understanding of the basic principles of reliability engineering.

후방 도달 척추 절제술을 이용한 강직성 요천추 변형의 치료

석세일,정의룡,이정희,김진혁,김성수,이지호,최원기,박용원 대한척추외과학회 2004 대한척추외과학회지 Vol.11 No.2

Trioctyl Methyl Ammonium Chloride를 이용한 뇨중 크롬의 원자 흡수 분광 분석에 관한 연구

박정오,윤기은,김석원 서울보건대학 1995 서울보건대학 부설 한국보건과학연구소 논문집 Vol.2 No.1

As chromium in urine remains as oxychromic acid ions, chromium was extracted by using ion pair formed with anion exchanger trioctyl methyl ammonium chloride. After then it is noted whether this TOMAC-MIBK method is effective or not for the chromium analysis by using flame method of Atomic absorption spectrometric analysis. The result is as following. 1. Effects of various acids on the extraction of Cr. with MIBK including TOMAC are good in order HNO_(3), H_(2)SO_(4), HCl and its proper concentration of HCl is 0.03M to 0.3M. 2. TOMAC concentration is 20times the molar concentration of Cr. complex in excess. 3. The recovery of Cr. in urine using AAS was obtained 98~104% for TOMAC. This results indicate that the optimized analytical condition obtained could be successfully applied to the quantitative analysis of Cr. in human urine sample using AAS.

복강경 검사로 진단한 결핵성 복막염 1례

박민경,서원석,박재옥,김창휘,고은석,임철완 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Tuberculous peritonitis is discovered from sixty to ninty percent of pulmonary tuberculosis patients. Clinical symptoms are nonspecific such as mild fever, weakness and malaise but show tenderness in right lower abdomen and abdominal distension. Diagnosis is confirmed by laparoscopic and pathologic findings. We report a case of tuberculous peritonitis in an 11-year-old boy who was hospitalized because of abdominal distension with pain on right lower abdomen which had developed one day before he came to hospital. Chest X-ray showed pleural effusion on both sides. We did laparoscopic examination and observed diffuse nodular infiltration. In biopsy specimen we observed osseous granuloma and acid-fast bacilli in AFB stain.