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김용배,장원기,황보영,김화성,안규동,이병국,이용진,이종은,이준숙,이찬구,이한정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1
Objective : Serum uric acid has now been identified as a marker for a number of metabolic and hemodynamic abnormalities. The aim of this study is to evaluate risk factors which influence hyperuricemia in the citizens of Asan. Method : The study design was cross-sectional and research subjects were 1086 citizens of Asan. General characteristics, cigarette smoking, alcohol consumption, and past history were obtained by interview using a structural questionnaire. Also, we measured height, weight and blood pressure, and serum uric acid of the subjects. Results : The mean serum uric acid level was 5.27 ㎎/㎗ in men and 4.01 ㎎/㎗, in women, In the multiple logistic regression analysis, statically significant risk factors of hyperuhcemia were gender, body mass index, blood lead concentration, and serum creatinine. Conclusion : Our results suggest that gender, body mass index, blood lead concentration, and serum creatinine might be the most important risk factors of hyperurcemia. Education program as well as routine check-up for serum uric acid was highly recommended for the effective prevention of hyperuricemia.
폴리에스테르 섬유 감량시스템용 프로세서 타이트레이터 개발
조진호,이흥락,이종현,김명남,구성모,김무영,진경찬,유병희,강민수,김국진 경북대학교 센서기술연구소 1993 연차보고서 Vol.1993 No.-
폴리에스테르 섬유 감량시스템의 제어를 위해서는 처리조 내에서 감량되는 섬유가 목표 감량치에 도달했는지를 판단해 주는 장치가 필요하다. 본 연구에서는 가성소다용액의 초농도 및 섬유 감량 정도의 정확한 측정과 감량 종료시간의 산출 및 이에 따른 종료신호를 발생할 수 있는 폴리에스테르 섬유 감량기 전용의 자동적정장치를 개발하였다. To control caustic soda treatment system for the polyester fabric reduction, we need the device to determine that the fabric has been arrived target reduction value. In this study, we develope an automatic process titrator for the caustic soda treatment system. Major functions of the target titrating system are accurate measurements of the caustic soda concentration and then producing the end point signal for caustic soda treatment system.
김진호,조광래,임수정,이경자,경기천,엄미정,김희권,김찬용,이영한,이신찬,윤순강 한국환경농학회 2003 한국환경농학회지 Vol.22 No.4
This study was carried out to evaluate the status of the groundwater quality for paddy fields irrigation in Korea. Water samples were collected at 130 sites throughout the country. Samples were collected at three seasons-April, July and October-in 2000. According to our survey, the groundwater was found to be suitable for irrigation purpose. Average EC was shown 0.286 dS/m. Nitrate-nitrogen and Cl^(-) concentration was 5.6 ㎎/L, 32.95 ㎎/L which satisfied the Korean Standards for Irrigation Water. Nitrate-nitrogen concentration in each province was shown as following orders: Jeju (11.17 ㎎/L) > Chungnam (8.16 ㎎/L) > Gyeongbuk (6.64 ㎎/L) > Gyounggi (5.91 ㎎/L) > Chungnam (4.95 ㎎/L) > Gyeongnam (3.91 mgk) > Jeonbuk (3.50 ㎎/L) > Jeonnam (3.27 ㎎/L) > Gangwon (2.91 ㎎/L). The concentration by sampling seasons were October (6.62 ㎎/L) > July (5.88 mg&) > April (4.78㎎/L). As the soil of Jeju Province is usually derived from volcanic ash soils mainly used for upland drops, it may influence the nitrate-nitrogen concentration of groundwater. The amount of rainfall also influence the water quality. But the COD_(Cr), were shown April (3.17㎎/L) > July (2.91 ㎎/L) > October (2.40 ㎎/L), it is highly related in the basal dose of organic matter fertilizers. This study demonstrated that groundwater quality was suitable for irrigation, but continuous monitoring is recommended for agricultural policy and developing OECD agricultural environment indicators.
이두진,박찬돈,이상관 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)
The purpose of process planning is to minimize the total duration of building construction. Multi-site scheduling method is one of the solutions of it. But, to use the Multi-site scheduling method, we must synchronize the time of each job. For this reason, Building Structure must be limited. In this paper, put into a formula to calculate the scheduling in the case of Multi-Building Construction without the limitation of the structure. Thus this paper are studied with the view of observation under the condition of the process and the term of works that it is increased a team of the longest works.
이영식,오강섭,노경선,김찬형,한진희,이민수 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.4
The Korean Neuropsychiatic Association (KNPA) was founded in 1945 and has now grown to over 2000 members as of 2003. The Association's academic meeting has also been increasing in size every year. To further develop the academic meeting of the KNPA, the task force team conducted this project. We suggest several points based on analysing the abstracts of the meeting that has conducted during the last 5 years, the survey results performed at the 2002 annual meeting, the annual meeting of the American Psychiatric Association, and the academic activities of a Korean medical assoction, the Korean Society of Otolaryngology.
무선 애드 혹 기반 액티브네트워크상에서 QoS지원에 관한 연구
李基源,裵振勝,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - In this thesis, we propose a QoS supporting method on wireless ad hoc-based active network for improving reliability. On the loss of route path, the existing DSR routing protocol has several problems with wireless network communication because of decease of data reception rate and increase of network load. The proposed method improves reliability of data transfer by using functions of active network. That is, by using functions of active nodes and active packets, the proposed method supports QoS with reservation transfer method that saves data packets on transfer at intermediate nodes with lost path and then re-transmit the packets after route reconfiguration.
이동환,김승일,전진희,박찬영,이민규 한국환경과학회 2000 한국환경과학회지 Vol.9 No.4
Nitrate-selective ion exchange resin which have bulky tertiary amine as functional group have been synthesized by the reaction of chloromethylated polystyrene-divinylbenzene copolymer and the corresponding tertiary amine [NR_3=NEt_3 1, N(C_2H_4OH)_3 2] in ethanol, while commercial resin has NMe_3 as functional group. The fundamental properties such as bulk density, water content, appearance index, exchange capacity, effective size, uniformity coefficient of synthesized anion exchange resin (1) have been measured. The ion exchange resin (1) and (2) exhibited the better selectivity for nitrate than sulfate in both batch and continuous column experiments.
Na/Si(111)계의 초기 산화과정에 대한 XPS 연구
이득진,안기석,황찬국,장현덕,박종윤 성균관대학교 기초과학연구소 1995 論文集 Vol.46 No.1
X-선광 전자분광법을 이용하여 Na의 흡착에 의해 형성되는 Si(111)7×7-Na과 Si(111)3×1-Na 표면의 초기 산화과정에 대하여 연구하였다. Si(111)7×7-Na 표면은 깨끗한 Si(111)7×7 표면에 비하여 산화가 더욱 잘 일어나지만, Si(111)3×1-Na의 경우 산소와 거의 반응하지 않음을 알 수 있다. 또한 Si(111)7×7 표면과는 달리, Si(111)7×7-Na 표면에 1 ML의 Na를 흡착시키고 산소를 100L 노출한 경우 0 ls 내각 스펙트럼에 두 종류의 산소성분이 존재를 함을 알 수 있다. 산소의 노출량이 증가함에 따라 낮은 운동에너지 성분의 세기는 계속 증가를 하지만, 높은 운동에너지 쪽의 성분은 초기에 포화되었다. 이러한 0 ls 내각 스펙트럼의 변화와 Na KLL Auger peak intensity 증가로부터 Si(111) 7×7-Na 표면에 흡착되는 산소는 Si-0-Si, 그리고 Si-0-Na 두가지의 결합형태로 존재함을 예상 할 수 있다. 또한, Si(111)7×7-Na 표면에 주입되는 산소 노출량이 증가함에 따른 Na KLL Auger peak intensity가 증가하는 현상에 대하여 논의하였다. The initial oxidation of Si(111)7×7-Na and Si(111)3×1-Na surfaces have been studied by means of X-ray photoelectron spectroscopy(XPS). The Si oxidation rate of Si(111)7×7-Na surface was much enhanced more than that of the clean Si(111)7×7, but the Si(111)3×1-Na surface hardly reacted with oxygen. It shows that 0 1s peak of the Si(111)7×7-Na surfaces for 100L O_2 exposure consists of two components, coming from a different oxygen bonding configuration. From the change in intensity of two component of 0 ls and the increase of Na KLL peak intensity with increasing O_2 exposure, it is found that one component originates from Si-0-Si bonding at the lower kinectic energy and the other component comes from the Si-0-Na bonding at higher kinectic energy. Also, we have discussed a possible interpretation for the abnormally increase of Na KLL peak intensity.