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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.
진국범,박경옥,이동근,장동호,민승기,방만혁 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.1
Recently, we have used internal fixation with titanium miniplate which introduced by Champy in 1976 in facial bone fractures. In cases of mandibular fractures, particulary mandibular angle fractures, we usually underwent the open reduction extraorally. But extraoral approaches may leave scars and put the facial nerve at greater risk. So, we had undergone the intraoral approaches in 31 patients of mandibular angle fractures (male : 29, female : 2)> These patients visited in Wonkwang university hospital from October 1991 to June 1993. We got easy operation time as average 20 minutes than extraoral approach. And reduced the postoperative nerve injury(14.2%), but postoperative infection is 6.1% nearly as same as extraoral approach. TMJ problems after intraoral open reduction was similar to extraoral approaches.
李國行,尹良重,朴鎭夏 全北大學校 文理科大學 1977 論文集 Vol.5 No.-
The second-order rate constants for the reactions of phenacyl halides with piperidine in anhydrous acetone were determined, and the activation parametrs were also evaluated. It was found that the phenacyl bromide was more reactive about 222 times than the phenacyl chloride toward the piperidine, and that the values of entropies of activation were quite negative and those of enthalpies of activation were comparatively low. It, therefore, may be concluded that the reactions were to be S_N2 mechanism. Arguments are presented against the application of Kirkwood's equation in the reaction of phenacyl bromide with piperidine.
김진국 慶尙大學校生産技術硏究所 1990 生産技術硏究所論文集 Vol.6 No.-
Butadiene-styrene copolymer is an amorphous transparent polymer which is widely used material in the polymer industuries. In this research, the rheological behavior of SBR was investigated by using Capillary Rheometer and Mooney Viscometer. Specially, this study includes the investigation of the rheological behavior of the particle filled polymer. Also a rheological model was suggested by fitting the experimental data for SBR.
장수진,류동균,원충연,이진국,배기훈,김수석 성균관대학교 2003 학술회의지원논문목록집 Vol.2003 No.-
A synchronous generator is equipped with an automatic voltage regulator(AVR), which is responsible for keeping the output voltage constant under normal operating conditions at various levels. The output voltage of Synchronous Generator is regulated constantly by field voltage control in excitation system. High frequency PWM converter (Buck converter) type excitation system for synchronous generator that can sustain proper output voltage level even at the fault condition happened. The proper operation of the proposed excitation system was verified through the simulations and the experiments.
Thiazide를 투약 중이던 고령의 환자에서 발생된 중증 저나트륨혈증 1례
김진국,최수정,황승덕 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Hyponatremia is the most common electrolyte disorder in hospitalized patients, and incidence of hyponatremia is about 1-4%. It is suggested that hyponatremia is closely related with morbidity and mortality in these patients. Diuretic-induced hyponatremia is one of the most common causes of hyponatremia associated with hypovolemic hypoosmolality, but serious hyponatremia due to diuretic use is relatively uncommon. Advanced age may be a predisposing cause, and women is more susceptible than men, but no definite proof has been documented. The severity of symptoms can be roughly correlated with velocity and degree of hyponatremia, and neurological symptoms generally do not occur until the serum sodium falls below 125 mEq/L. Rapid development of hypoosmolality can result in brain edema before brain adaptation occurs by excreting intracellular solutes. In the most severe cases death can result from respiratory arrest after cerebral herniation. So, it is need to optimal treatment for neurological symptoms. We report a case of serious thiazide-induced hyponatremia in elderly hypertensive man which were aggravated by infusion of simple dextrose solution without electrolyte for severe watery diarrhea.