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친환경 자동차용 매입형 영구자석 동기전동기 모델 기반 토크제어 알고리즘 기법
김성규(Sung Kyu Kim),곽무신(Mu Shin Kwak),이영국(Young Kook Lee),정진환(Jin Hwan Jung) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Interior Permanent Magnet Synchronous Motor(IPMSM) has gained an increasing popularity in recent years for Hybrid Electric Vehicle(HEV) and Electric Vehicle(EV), because of their high power density and high efficiency. This paper proposes a current reference generation method based on electric machine flux model, and compares the performance of the proposed method with those of a conventional method. Experimental results showing the superiority of the proposed method are provided in this paper.
이경미(Kyeong Mi Lee),권선옥(Seon Og Kweon),오제열(Je Yol Oh),황의석(Eui Suk Hwang),김형중(Hyung Jung Kim),안철민(Chul Min Ahn),김성규(Sung Kyu Kim),이원영(Won Young Lee),김상진(Sang Jin Kim),이기범(Kyi Beom Lee) 대한내과학회 1993 대한내과학회지 Vol.45 No.2
Pulmonary carcinosarcoma is an exceedingly uncommon malignant tumor with less than 100 cases reported to date. Carcinosarcoma of the lung, histologically, consists of intermingling elements of carcinoma (usually squamous cell type) and sarcoma (usually spildle cell type). We experienced a pulmonary carcinosarcoma case of 76-year-old man smoker with hypertrophic osteoarthropathy. The tumor, 12 × 8 × 8 cm sized, was located in the lower lobe of the left lung without endobronchial invasion, Lightmicroscopically, the tumor is composed of an area of tubular structure of adenocarcinoma and spindle cells of sarcoma. In immunohistochemical stain, the tumor consists of tubular structure that reveal positive for cytokeratin and the spindle cells for vimentin. So we report this case of carcinosarcoma of the lung with a literature review.
급성 호흡부전증으로 기계호흡중인 환자에서 예후의 조기 예측에 대한 연구
이홍렬(Hong Lyeol Lee),김세규(Se Kyu Kim),장준(Joon Chang),김형길(Hyung Kil Kim),김성규(Sung Kyu Kim),이원영(Won Young Lee),김진호(Jin Ho Kim) 대한내과학회 1993 대한내과학회지 Vol.45 No.6
Background: Acute respiratory failure is a condition in which an illness or impairment of the respiratory system results in inadequate oxygenation or ventilation, or both, It occurs in all age-group. The causes for acute resiratory failure are varied because it is a frequent complication of many diseases. Even though patients are managed intensively with mechanical ventilation, the mortality rate has been 20-60% until today. Therefore, early prediction of r>utcome in such patients should be considered a high priority so that corrective measures or alternative support methods may be rapidly institued. Methods: We did this study prospectively in patients who survived more than 8 days after receiving me-chasnical ventilation continuously in the Intensive Care Unit. Patients whose initial arterial blood gas values before mechanical ventilation which showed PaO2, less than 50 mmHg or PaCO2, greater than 50 mmHg were included. We divided the patients into the Survivor (n= 66) and Non-survivor (n=74) group. During the first 7 days of mechanical ventilation, we measured the FiO2, PHa, PaO2, PaCO2, Tidal volume, Respiratory rate, Peak inspiratory pressure, Plateau pressure and End expiratory pressure daily. From the collected data, the following variables were calculalted: Buffer base deviation (measured-predicted), Minute ventilation (tidal volume×respiratory rate), Dynamic compliance (tidal volume/(peak pressure-PEKP)), Static compliance (tidal volume/(plateau pressure-PEEP)), Pulmonary insufficiency index, Physiologic shunt or Gas exchange indexes such as PaO2/FiO2, and PaO2/PAO2, and our own variables such as D(A-a)O2/FiO2 and PAO2/FiO2. We compared these variables daily between the survivor and non-survivor groups. Results: Age didn't show a significant difference and ICU stays were longer in the survivor group. We didn't find any significant difference in buffer base deviation, minute ventilation, and dynamic compliance between the two groups. Static compliance showed higher values in the survivor group and from the 4th day after mechanical ventilation, there was a significant difference. Pulmonary insufficiency index and the ratio of D(A-a) O2/FiO2, and PAO2/FiO2, showed significaotly higher values in the nonsurvivor group throughout the first seven days. There was a tendency of gradual decrease in the survivor group but almost no change in the nonsur-vivor group. The ratio of PaO2/FiO2, and PaO2/PAO2, showed significantly higher values in the survivor group throughout the first seven days. There was a tendency of gradual increase in the survivor group but almost no change in the nonsurvivor group. Conclusion: Static compliance, pulmonary insufficiency index, D(A-a)O2/FiO2, PAO2/FiO2, PaO2/FiO2, and PaO2/PAO2, showed a significant difference between the survivor and nonsurvivor groups, and each value showed the characteristic changing patterns throughout the first 7 days after mechanical ventilation. With observation of each value and changing patterns during the first 7 days after mechanical ventilation, these parameters were thought to be helpful in the early prediction of outcome in mechanically ventilated patients due to acute respiratory failure.
재생연 제련 부산물인 황산연으로부터 정제 질산연의 제조
이진영,한춘,신중극,김성규,이화영,오종기,Lee, Jin-Young,Han, Choon,Shin, Joong-Kuk,Kim, Saung-Gyu,Lee, Hwa-Young,Oh, Jong-Kee 한국자원리싸이클링학회 1998 資源 리싸이클링 Vol.7 No.2
2차납 제련공정에서 발생한 주성분이 황산납인 연진으로부터 고부가가치제품인 정제 질산납을 생산하는 습식공정을 개발하였다. 본 공정은 탄산염에 의한 탄산화 공정과 저농도 질산용액을 이용한 침출공정 및 정제 공정으로 구성되어 있으며 본 공정을 통하여 99%이상의 순도를 가진 질산납을 제조할 수 있었다. Hydrometallugical process was developed to produce the purified lead nitrate from lead dust mainly composed of lead s sulfate generated from lead-acid battery smelter as by-product. This process consisLed of carbonation process with carbonate s salts, leaching and purification processes. FmaJJy crude lead nitrate purified to produce high-purity product with over 99% Pb $(NO_3)_2$.
이성희,고영배,이종원,김성규,양진석,허영무,Lee, Sung-Hee,Ko, Young-Bae,Lee, Jong-Won,Kim, Sung-Kyu,Yang, Jin-Suk,Heo, Young-Moo 한국금형공학회 2008 한국금형공학회지 Vol.2 No.5
A micro-injection mold for ultra-thin-walled plate was considered in this work. The proposed mold system is for the fabrication of ultra-thin walled plastic plate with micro features by injection molding. As the injection molding of thin-walled plastic, which has the thickness under $400{\mu}m$, itself is not easy, the injection molding of the micro-features in the thin-walled structure is more complicated and difficult. To investigate the basic phenomenon of the ultra-thin walled part during the injection molding process, design of the part and mold system were performed in the present study. The injection molding and structural analysis of the suggested part and mold system were also performed. Consequently, injection molding system for ultra-thin walled plate with micro features were manufactured and presented.