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펄스레이저 증착법으로 제작된 $Bi_4Ti_3O_{12}/LaAlO_3$ 박막과 $Bi_4Ti_3O_{12}/YBa_2Cu_3O_{7-x}/LaAlO_3$ 복합구조의 에피 성장
조월렴,조학주,노태원,Jo, Wol-Ryeom,Jo, Hak-Ju,No, Tae-Won 한국결정학회 1994 韓國結晶學會誌 Vol.5 No.2
펄스 레이저 증착법을 이용하여 강유전체 Bi4T13012 박막을 laA109(001) 위에 성장시켰다. 넓은 영역의 온도에서 증착한 박막의 상 형성과 구조적 성질을 X선 회절법을 이용하여 조사하였다. 740℃에서 증착한 박막은 박막의 c-축이 기판에 수직한 형태의 에피 성장의 경향을 보인다. 펄스 레이저 증착법을 이용하여 Bi4Ti3O12/YBa2Cu3O7-x/LaAlO3 복합구조를 in-situ 성장시켰다. Yba2Cu3O7-x의 a-, b-축이 LaAlO3와 완벽하게 평행하게 배열되어 있지 않음에도 불구하고, Bi4Ti3012 박막은 에피 성장의 경향을 보인다. Ferroelectric Bi4Ti3012 thin films have been grown on LaAlO(001) by Pulsed-laser deposition. Phase formation and structural films prepared of the films prepared at varigus deposition temperatures are investigated using x-ray diffraction The film grown at 740℃ shows epitaxial growth behavior with c-akis normal to the substrate. N2tBmstiucCures of Bi4Ti3012/YBa2Cu307-x/LaAIO3(001) have been in-situ grown. Even though the a-and b-axes of the Yba2Cu307-x layer show epitaxial growth behavior.
오지혜,백승화,조학주,황석연 대한의생명과학회 2023 Biomedical Science Letters Vol.29 No.3
Recently, as a health problem of the elderly in an aging society, the risk of nutritional imbalance and weakening of immunity due to deterioration of masticatory function has been mentioned. In order to solve this problem, this study was conducted to investigate the effect of cyclophosphamide (CPA)-induced immunosuppression in mice induced by fermented samultang (FST) porridge on the markers related to immune activity function. ICR Mouse was divided into 6 groups of 7 animals each. Experimental groups were set as normal control group, CPA-administration group, positive control group, and FST-administration experimental group (0.25%, 0.5%, 1.0%). In groups except for the normal control group, 100 μL of CPA dissolved in 0.9% NaCl at a concentration of 150 mg/kg was injected twice at the start of the experiment and after 3 days to induce immunosuppression. As a result of analyzing the cell proliferation capacity of splenocytes, all B and T cells decreased in the CPA-administered group and increased in a concentration-dependent manner in the FST-administered group. In addition, IgA measured to evaluate the effect of improving immunity showed high values in medium and high concentration FST (P<0.05). These results can be expected as an effective solution to improve the nutritional imbalance of the elderly.