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남현빈,정세진,구민석,오예진,김용민,이훈희,윤수정,임정균 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2
In addition to the development of functional cosmetics, technology to increase percutaneous absorption rate when applied to the skin is an important task. In this experiment, oleic acid was used as a skin absorption promoter, and its effect on transdermal permeability of adenosine was studied and analyzed using a skin-like membrane. As a result of the experiment, it was investigated that the permeability coefficient and concentration of adenosine are proportional to the content of oleic acid. This indicates that a high proportion of oleic acid is effective as a skin absorption promoter.
宋容浩,李鍾國,任亮彬 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.2
In this paper, it is aimed to study the architype of Korean houses with topological analysis. So, first, the meaning & rationality of topological analysis on houses is discussed. Second, the traditional houses devided into Minka & Banka(Korean houses name of low & high society's) are analyzed. Third, the modem houses built since 1970 are analyzed, too. And last, hoses of both traditional ones and modern ones are interpretated comparatively. Conclusionally, the fact that architype of Korean houses comes from Minka is verified.
김세웅,임필빈,정웅교,이승주,이지열,조용현,윤문수 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.3
배경 : 최근 요로감염 원인균에 대한 내성 증가로 항생제 감수성에 변화를 가져와 요로감염 환자에게 경험적 1차 치료를 위한 항생제 선택에 어려움을 주고 있다. 단순 및 복잡성 요로감염으로 진단 받은 환자들을 대상으로 원인균과 그에 따른 항생제의 감수성을 살펴봄으로써 향후 단순 및 복잡성 요로감염에 대한 항생제의 선택에 도움을 받고자 한다. 대상 및 방법 : 1996년 6월부터 2001년 5월까지 요배양 검사상 요로 감염균이 10^5cfu/ml 이상의 집락이 형성된 200명을 대상으로 해부학적 또는 구조적인 장애 유무에 따라 단순 요로감염 및 복잡성 요로 감염으로 나누어 각각의 원인균과 그에 따른 항생제의 감수성을 후향적으로 분석하였다. 결과 : 복잡성 요로감염의 가장 흔한 원인질환은 신경인성 방광이었다. 단순 요로감염의 가장 흔한 원인균은 E. coli (61.35%)였고 복잡성 요로감염에서는 E. coli 이외의 균이 E. coli 보다 더 흔한 원인균이었다(58.9%). 단순 및 복잡성 오료감염 중 그람 양성균에서는 vancomycin, penicillin 이 높은 감수성을 보인 반면 ciprofloxacin, imipenem이 낮은 감수성을 보였고 그람음성균에서는 amikacin, imipenem이 높은 감수성을 보인 반면 ampicillin, bactrim이 낮은 감수성을 보였다. 결론 : 단순 및 복잡성 요로 감염의 주 원인균으로 그람 음성균주 특히, Ecoli에 의한 감염이 많은 비중을 차지하고 있으나 빈도가 점차적으로 감소하는 추세이다. 또한 병원성 감염 및 도뇨관의 장기 유치에 따른 교대균의 증가, 비병원성 세균의 출현 등으로 인한 E. coli 이외의 기타 그람음성균 및 그람양성균의 증가하는 추세이다. 향후 임상에서 요로감염의 일치 치료제로 많이 사용되고 있는 ampicillin과 bactrim 등의 항생제의 감수성이 낮으므로 사용시 필요하다고 사료된다. Backround : The increasing frequency of failure of urinary tract infections (UTIs) may be due to emerging resistance to commonly prescribed antimicrobials. We studied the causative microorganisms and their antibiotic sensitivities in uncomplicated and complicated UTIs. Methods : We analyzed 219 microorganisms and their antibiotic sensitivities of 200 outpatients who had more than 10^5cfu/ml on urine from June 1996 to May 2001 retrospectively. The patients weredivided into 2 groups, uncomplicated UTI group and commplicated UTI group according to with or without underlying disease. Results : The most common underlying disease of complicated UTI was neurogenic bladder. The most common pathogenic microorganism was Escherichia coli (E. coli) (61.35%) in uncomplicated UTI group but in complicated UTI, non-E, coli(58.9%) was more common than E. coli. In uncomplicated and complicated UTI, vancomycin, penicillin showed relatively higher sensitivity of gram positive organisms, while ciprofloxacin, imipenem showed relatively lower sensitivity, and imipenem, amikacin showed relatively higher sensitivity of gram negative organisms, while bactrim, amipicillin showed relatively lower sensitivity. Conclusion : We consider that gram negative microorgansisms, especially E. coli, is the main cause of UTI. But, we should concern about the increase of gram positive organsms and other gram negative organisms besides E. coli. Bactrim, amipicllin which were prescribed empirically in UTIs, showed relatively lower sensitivity. Regarding tom the choice of adequate drug in the treatment of UTI, it is necessary to consider the change of pathologic microorganisms.
Uk Bin Im,Eun Bo Shim,김기웅,Yong Ho Lee,Yong Ki Park 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.1I
We present a computational study of re-entry wave propagation which were does using an electrophysiological model of a human ventricular cell and the associated magnetic field map in threedimensional (3D) cardiac tissue. A re-entry wave caused by cardiac disease can induce ventricular fibrillation, the major cause of sudden cardiac death. Magnetocardiographs (MCG) can detect early heart muscle ischemia. However, the clinical parameters for using MCGs to identify heart ischemia are poorly understood. Therefore, we examined the details of the magnetic field variation and related physiological parameters for a re-entry wave in 3D cardiac tissue. We used a new human cardiac cell model to simulate action potential (AP) propagation in a 3D rectangular parallelepiped block of tissue, and a finite element method and Galerkin approximation to discretize the 3D domain spatially. The re-entry wave was generated using an S1-S2 protocol. Calculations of the magnetic field pattern were based on the assumption of a horizontally layered conductor for re-entry wave propagation in the 3D cardiac tissue. Our results support previous findings. We also compared the AP and MCG magnitude during re-entry wave propagation to those during normal wave propagation. The temporal changes in the re-entry wave motion and the magnetic field map patterns were also analyzed with well-known MCG parameters, the current dipole direction and strength.t
다분지 미니 채널 열교환기의 액단상 열전달 특성에 관한 연구
임용빈(Yong-Bin Im),이승훈(Seung-Hun Lee),김정훈(Jeung-Hoon Kim),김종수(Jong-Soo Kim) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
This research focused on the multi-pass heat exchanger using the minichannel possessing the spring fin. An air-water was used as working fluid. The characteristics of liquid single phase heat transfer were verified. The compact heat exchanger (heat transfer area density : ß= 2,146 ㎡/㎥), based on the shape of header(Top combining header), 63 minichannels (D<SUB>i</SUB> : 1.4 ㎜, L : 0.25 m) and the air side adopting the copper wire spring fin, was fabricated. The heat transfer area density of the air side was improved up to 161% when compared with the conventional fin-tube heat exchanger that adopts the heat transfer tube with the inner diameter of 5 ㎜. With regard to heat transfer performance, heat transfer rate per unit volume increased up to 142% when compared with the fin-tube heat exchanger adopting the heat transfer tube with the inner diameter of 5 ㎜.