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강유전체 캐패시터 전극으로의 BaRuO$_3$박막의 구조적 및 전기적 특성
박봉태,구상모,문병무 한국전기전자재료학회 1999 전기전자재료학회논문지 Vol.12 No.1
Highly conductive oxide films of BaRuO$_3$ have been grown heteroepitaxially on (100) LaAlO$_3$ single crystalline substrates by using pulsed laser deposition. The films are c-axis oriented with an in-plane epitaxial relationship of <010><100>BaRuO$_3$ // <110>LaAlO$_3$. Atomic force microscopy (AFM) observation shows that they consist of a fine-arranged network of grains and have a mosaic microstructure. Generally temperature-dependent resistivity shows the transition from metallic curve to semiconductor-metallic twofold curve by the deposition conditions for Ru oxide based materials like SrRuO$_3$, CaRuO$_3$, BaRuO$_3$, etc.. This twofold curve comes from the structural similarity of Ru oxide based materials including BaRuO$_3$. We find that the distance of Ru-Ru bonding in the unit cell of BaRuO$_3$ as well as the grain boundary scattering could be the two important causes of these interesting conductive properties.
위장관의 비호지킨 림프종 환자에서 발생한 Isospora Belli 1 예
김민성,박봉태,이일수,박종호,이인상,장도현,조성락,문취용,강종득,김종한,최호수,이채원 대한내과학회 1996 대한내과학회지 Vol.51 No.1
The coccidian parasite Isospora belli causes human intestinal disease. It have been associated with immunodeficent states. Recently Isospora belli has also been recognized as an opportunistic protozoan pathogen in patients with the acquired immunodeficiency syndrome(AIDS). Most case are self-limited, with spontaneous resolution occuring in several weeks. However, in patients with AIDS or other immunocompromise infections are not self-limited but rather may resemble cryptosporidiosis with chronic, profuse watery diarrhea. Recently we experienced a case of isosporiasis in non-Hodgkin's lymphoma patient presenting as diarrhea and weight loss. The patient was treated with trimethoprim-sulfamethoxazole with clinical improvement. So we report this case with a literature review.