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Eisenmenger씨 증후군을 동반한 충수돌기염 천공에 의한 복막염 환자의 마취경험 : 증례보고
천경석,박천희,이철승,이철,안용미,최준석 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.3
Eisenmenger's syndrome includes any condition in which communication between the pulmonary and systemic circulation gives rise to pulmonary vascular disease causing a right to left shunt with peripheral cyanosis, It can occur with complex congenital cardiac malformations, such as septal defect and patent ductus arteriosus. We report a case of a 58-year-old woman with an emergency operation for peritonitis due to appendiceal perforation and Eisenmenger's syndrome secondary to large ventricular septal defect. We carefully performed balanced anesthesia with air-O₂-desflurane-remifentanil. She was transferred to the intensive care unit in intubated state postoperatively and discharged two weeks later without any complications.
내외통제성과 성역할 정체감이 초등학교 아동의 진로의식 성숙에 미치는 영향
박경묵,천석규 진주교육대학교 2001 論文集 Vol.43 No.-
This purpose of the study was to examine the effect of internal-external control and sex-role identities on their career maturity of elementary school children. The subjects in this study were 200 selected six graders who included 100 children from an elementary school in the city of Geoje and 100 from an elementary school in Goseong-gun, South Kyongsang province. The findings of this study could be described as below: First, In regard to the gender-based career maturity discrepancies, gender made no difference to their career choice and career attitude. Second, as a result of investigating whether the career maturity was affected by the internal-external control, the internal-control group was better at total career capability and total career maturity as well. Third, as a result of examining whether the career maturity was influenced by the sex-role identities, the children whose sex-role identities were undifferentiated or androgynous were more dependent than the others. The findings of this study suggest that in order to enhance the career maturity of elementary school children, gender characteristics should be taken into account in developing career-education programs. In addition, there should be a variety of efforts to help children cultivate internal control and androgynous identities.
박철하,최갑석 明知大學校 産業技術硏究所 1990 産業技術硏究所論文集 Vol.9 No.-
In this paper, handwritten basic Hangout recognized by using the modified hough transform (MHT) and neural network, in order to reduce misrecognition due to the variation of input patterns according to writers. In order to recognize basic hangout which is consisted of tile 14 single consonants and the 10single vowels, input data of neural network is extracted by coding the location of each stroke which is detected by the MHT. Real time recognition of basic Hangeul can be realized in personal computer by using input data which is compressed to 8 feature value by MHT.
Aspergillus sp. ISR 균주를 통한 콜레스테롤 합성저해제 lovastain의 생산
박상은,조미현,신동화,황승환,박천석 경희대학교식량자원개발연구소 2005 硏究論文集 Vol.24 No.-
본 연구에서 한국 토양에서 분리된 lovastatin 생산 균주인 Aspergillus sp. ISR 균주를 이용하여 여러 배지 조성 성분이 lovastatin의 생산에 미치는 영향을 관찰하였다. 탄소원으로는 lactose보다 glycerol 5%가 가장 효과적이었으며 질소원과 인산염의 경우는 기본 RPM배지 조성과 농도에서 보다 효과적인 것을 발견하지 못하였다. 복합영양원으로 rapeseed meal 보다는 대두박이 보다 효과적이어서 저렴한 배지원으로 사용이 가능할 것으로 사료된다. 최종적으로 최적화된 배지를 사용하여 52 mg·L^(-1)의 lovastatin을 생산할 수 있었고 이는 기존의 RPM 배지보다 수율이 4.5배 증가한 것이다. 좀 더 효과적인 lovastatin의 생산을 위하여 회분식 발효에 대한 연구와 분자유전학적인 연구를 통한 고생산 균주의 제조에 대한 연구가 진행중이다. Effects of various nutritional components on the production of lovastatin were investigated in the Aspergillus sp. ISR. Among various carbon (C) sources, glycerol was determined to be the most effective C source at the concentration of 5% (v/v). In case of nitrogen sources, 0.2% (w/v) KNO_(3) efficiently induced the lovastatin production in Aspergillus sp. ISR. Interestingly, the addition of soybean meal into the production medium enhanced the lovastatin production compared to the rapeseed meal. Conclusively, Aspergillus sp. ISR produced 52 mg·L^(-1) of lovastatin in the optimized medium containing 5% (v/v) glycerol, 0.2% (w/v) KNO_(3), 0.3% (w/v) KH_(2)PO_(4), and 0.3% (w/v) soybean meal, which was 4.5 times higher than the amount produced using the standard RPM (rapeseedmeal production medium).
철골보와 철근콘크리트기둥으로 이루어진 접합부의 기존 내력평가법에 관한 비교연구
안재혁,박천석 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
This paper is on the study of strength evaluation for the frame joint made from reinforced concrete column and steel beam(RCS system joints). Especially for those categorized as through beam type, the accuracy of the existing design equations proposed in the inside and outside of the country was studied in detail with shear key such as face bearing plate(FBP), Extended FBP, vertical joint reinforcement. It was shown that strength evaluation equations proposed in James K. Wight provided the most accurate and consistent strength estimates. Some design equations proposed by Japanese often underrated the joint strength for specific joint details.
Active Mechanical Vibration Control of Rotary Compressors for Air-conditioning Systems
Cheon-Su Park,SeHwan Kim,Gwi-Geun Park,Jul-Ki Seok 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.6
Recent power electronics and variable-frequency motor drive technologies have been applied to air conditioners to improve efficiency and power density. However, the mechanical vibrations and acoustic noise resulting from the compressor still remain as a serious problem. This paper presents the development and implementation of an online disturbance state-filter for the suppression of multiple unknown and time-varying vibrations of air conditioning systems. The proposed design has a form of the state-filter based on a Luenburger-style closed-loop speed observer. An active vibration decoupling strategy with an estimated disturbance is provided, which manipulates a motor torque command. Since the proposed estimation does not require any additional transducers or hardware for obtaining real-time information upon disturbances, it is suitable for retrofitting industrial air conditioners.
Park, Cheon Seok,Kim, Jeong-Yoon,Crispino, Caroline,Chang, Ching Chuan,Ryu, D. Y. 충남대학교 생물공학연구소 1999 생물공학연구지 Vol.7 No.-
A novel P-type ATPase gene, Saccharomyces cerevisiae PMR1 homologue (YlPMR1), has been cloned and sequenced in the yeast, Yarrowia lipolytica. The putative gene product has 928 amino acids with a calculated molecular mass of 100 050 Da and a p1 of 5.15. The deduced amino-acid sequence analysis demonstrated that the cloned gene product contains all 10 of the conserved regions in P-type ATPases and exhibits 55% amino-acid identity to the S. cerevisiae PMR1 gene product; however, it shows a relatively lower homology to PMCA (24%) and SERCA (33%), confirming the presence of a third class of Ca^2+ -ATPase (secretory pathway Ca^2+ -ATPase, SPCA). The YlPMR1-disrupted strain shows defective growth in low Ca^2+ or EGTA-containing medium. In fact, a longer lag time (60 h) was observed in YlPMR1-defective mutant cells during cultivation in EGTA-containing YPD medium. These growth defects were overcom by adding Ca^2+ and Mn^2+ into the medium. Interestingly, whereas Mn^2+ inhibits growth of the control strain, it significantly improves the growth of YlPMR1-disrupted cells. There results suggest an involvement of the YlPMR1 gene product in Ca^2+ and Mn^2+ ion homeostasis in Y. lipolytica. ⓒ 1997 Elsevier Science B.V.