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Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8 vol%) and higher electrical conductivity values than those of samples extruded by capillary and... -
The Deposition and Characteristics of Ni Thin Films according to Annealing Conditions for the Application of Thermal Flow Sensors
Noh. Sang-Soo, Lee. Eung-Ahn, Lee. Sung-Il, Jang. Wen-Teng 한국전기전자재료학회 Transactions on electrical and electronic materials 5 Pages
한국전기전자재료학회 Transactions on electrical and electronic materials 2007, Vol.8 No.4 161-165 (5 pages)
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Injury and inflammation detection by the application of microcurrent through the skin
Timothy Hui-Jerrold Petrofsky 물리치료재활과학회 Physical Therapy Rehabilitation Science 8 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2013, 제 2권 제 1호 6 31-38 (8 pages)
tissues. Design: Case control study. Methods: First, microcurrent was measured as decreased blood flow induced hypoxia in healthy subjects. Next, reliability was assessed by measuring over ten days with set variations in pressure and distance between the electrodes. Finally, measurements over sprained ankle were compared to measurements over comparable uninjured areas on the same injured subject. Results: For the blood flow test phase, microcurrent significantly decreased an average of 17% after... -
Pulsed-wave Doppler ultrasonographic evaluation of hepatic vein in dogs with tricuspid regurgitation
Jaehwan Kim, Soyoung Kim, Kidong Eom 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 1호 10 73-79 (7 pages)
This study was performed to identify the relationships between hepatic vein (HV) measurements, including flow velocity and waveform, using pulsed-wave (PW) Doppler ultrasonography, and the severity of tricuspid regurgitation (TR) in dogs. The study included 22 dogs with TR and 7 healthy dogs. The TR group was subdivided into 3 groups according to TR jet profile obtained by echocardiography. The hepatic venous waveform was obtained and classified into 3 types. A variety of HV measurements,... -
Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry
Youn-Hwan Hwang, Jong-Hwan Lim, Byung-Kwon Park and Hyo-In Yun 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2002, 제 3권 제 2호 7 103-108 (6 pages)
Macrolides are frequently used in veterinary medicine as therapeutic and preventive agents for various diseases. It is difficult to determine macrolides simultaneously with conventional methods due to their similar structures. A simultaneous analysis for erythromycin, roxithromycin, tiamulin and tylosin with LC/MS has been developed. Separation was performed on C18 reversed phase column. Mobile phase was gradiently flowed with 10 mM ammonium acetate and methanol. The mass spectrometer was run in... -
Distinct Cellular Calcium Metabolism in Radiation-sensitive RKO Human Colorectal Cancer Cells
YunTaiKim, SooShinJo, YoungJunPark, MyungZaLee, ChangKookSuh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.6 10 509-516 (8 pages)
Radiation therapy for variety of human solid tumors utilizes mechanism of cell death after DNA damage caused by radiation. In response to DNA damage, cytochrome c was released from mitochondria by activation of pro-apoptotic Bcl-2 family proteins, and then elicits massive Ca2＋ release from the ER that lead to cell death. It was also suggested that irradiation may cause the deregulation of Ca2＋ homeostasis and trigger programmed cell death and regulate death specific enzymes. Thus, in this... -
A Study on the Characteristics of Plasma Blacks Prepared by Plasma Pyrolysis Over Metals Coated Honeycomb Catalysts
Soo Yeop Park, Joong Kee Lee, Kyung-Seun Yoo, Wonihl Cho, Young 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2003, Vol.4 No.2 4 74-78 (5 pages)
현재 지구는 무분별한 자원의 사용과 유해물질의 생산으로 인하여 점점 대기, 수염, 토양 등의 오염이 가속화되고 있다. 따라서 앞으로 생산되어지는 물질들을 환경 친화적 이어야하며 부가적으로 생산되어지는 물질 또한 환경 친화적이고 유용하게 쓰여야만 한다. 메탄 혹은 천연가스에서 수소를 제조하는 기술은 니켈계촉매하에 수증기개질법에 의해 수소를 제조하였으나 이는 제조과정 중 과다한 CO₂의 방출로 인하여 지구 온난화에 영향을 끼칠 수 있다. 따라서 환경치환적인 수소를 제조하는 기술 개발은 지구 온난화 문제 해결과... -
Influence of Carbon Black as a Conductor on Electrode Characteristics for Lithium Secondary Battery
Serah Yoon, Joong Kee Lee, Jae Beck Ju, Byung Won Cho, Dalkeu 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2002, Vol.3 No.1 4 17-24 (8 pages)
카본블랙은 대기 주에서 0.1~10²S/cm 정도의 전도성을 가지며, 고분자 물질에 일정 농도 이상을 첨가하여 도전재로서 전도성 패키지 제작, 케이블의 반도전층 및 전지 제작 드에 널리 사용되고 있다[1]. 카본블랙은 구형의 기본 입자들이 서로 뭉쳐진 형태로 존재하며, 각각의 기본 입장의 내부의 350pm~380pm 간격의 층상구조가 표면에 대해 평행한 방향으로 배열되어 있는 모양을 하고 있다. -
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전기비저항탐사를 이용한 성토하부 연약지반의 변형 해석
김재홍, 홍원표, 김규범, Kim. Jae-Hong, Hong. Won-Pyo, Kim. Gyoo-Bum 대한지질공학회 지질공학 8 Pages
대한지질공학회 지질공학 2011, Vol.21 No.2 117-124 (8 pages)
해안 매립 연약지반상에 도로나 제방을 성토한 경우 연약지반 속에서는 침하, 융기, 측방유동 등의 지반변형이 빈번하게 발생한다. 연약지반의 지반변형 거동을 지상에서 원지반을 훼손하지 않고 조사하기 위하여 전기비저항탐사법을 적용하여 보았다. 본 연구에서 해안지역의 점토질 퇴적층이 주로 분포하는 서해안 시화지구의 매립지역에서 실험성토를 실시하였다. 실험성토후, 성토하중에 의한 연약지반의 변형 영향범위를 확인하기 위하여 전기비저항탐사법을 실시한 결과, 수평방향으로는 성토 지역에서 남측으로 약 5 m 범위, 수직... -
지표면에 의한 음의 초과 감쇠 특성 연구
황철호, 정성수 한국소음진동공학회 소음진동 9 Pages
한국소음진동공학회 소음진동 1997, Vol.7 No.3 401-409 (9 pages)
