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Atomic Structure Analysis of A ZnO/Pd Interface by Atomic Resolution HVTEM
Saito, Hiromitsu,Ichinose, Hideki Korean Society of Electron Microscopy 2006 Applied microscopy Vol.36 No.2
Interfacial atomic structure (chemical structure) of a Pd/ZnO hetero junction was investigated by atomic resolution high voltage transmission electron microscopy (ARHVTEM). A misfit dislocation did not work as a stress accommodation mechanism in the ZnO(0001)/Pd (111) interface. But the periodic stress localization occurred in the ZnO($10\bar{1}0$)/(200) interface. The periodicity of the local strain coincided with that of misfit dislocation. Atomic structure image of the ARHVTEM showed that an atomic arrangement across the interface was in the order of O-Zn-Pd. It was shown that mechanical weakness of the ZnO(0001)/Pd(111) interface against cyclic heating is attributable to the absence of the periodic stress localization of the misfit dislocation.
Koji Matsuo,Muneaki Shimada,Tsuyoshi Saito,Kazuhiro Takehara,Hideki Tokunaga,Yoh Watanabe,Yukiharu Todo,Kenichirou Morishige,Mikio Mikami,Toru Sugiyama 대한부인종양학회 2018 Journal of Gynecologic Oncology Vol.29 No.1
Objective: To examine the surgical-pathological predictors of para-aortic lymph node (PAN) metastasis at radical hysterectomy, and for PAN recurrence among women who did not undergo PAN dissection at radical hysterectomy. Methods: This is a retrospective analysis of a nation-wide cohort study of surgically-treated stage IB–IIB cervical cancer (n=5,620). Multivariate models were used to identify independent surgical-pathological predictors for PAN metastasis/recurrence. Results: There were 120 (2.1%) cases of PAN metastasis at surgery with parametrial involvement (adjusted odds ratio [aOR]=1.65), deep stromal invasion (aOR=2.61), ovarian metastasis (aOR=3.10), and pelvic nodal metastasis (single-node aOR=5.39 and multiple-node aOR=33.5, respectively) being independent risk factors (all, p<0.05). Without any risk factors, the incidence of PAN metastasis was 0.9%, while women exhibiting certain risk factor patterns (>20% of the study population) had PAN metastasis incidences of ≥4%. Among 4,663 clinically PAN-negative cases at surgery, PAN recurrence was seen in 195 (4.2%) cases that was significantly higher than histologically PAN-negative cases (2.5%, p=0.046). In clinically PAN-negative cases, parametrial involvement (adjusted hazard ratio [aHR]=1.67), lympho-vascular space invasion (aHR=1.95), ovarian metastasis (aHR=2.60), and pelvic lymph node metastasis (single-node aHR=2.49 and multiple-node aHR=8.11, respectively) were independently associated with increased risk of PAN recurrence (all, p<0.05). Without any risk factors, 5-year PAN recurrence risk was 0.8%; however, women demonstrating certain risk factor patterns (>15% of the clinically PAN-negative population) had 5-year PAN recurrence risks being ≥8%. Conclusion: Surgical-pathological risk factors proposed in this study will be useful to identify women with increased risk of PAN metastasis/recurrence.
ALUMINUM BIAS SPUTTERING FOR FILM COVERAGE IMPROVEMENT
Kobayashi.Shigeru,Shimamura, Hideaki,Sakata, Masao,Fujita, Shouyou,Yajima, Akira,Saito, Hiroshi,Tateishi, Hideki,Sasaki, Shinji 대한전자공학회 1989 ICVC : International Conference on VLSI and CAD Vol.1 No.1
A filter was installed between the sputtering target and the substrate so as to reduce the aluminum deposition arriving with a shallow angle at the substrate in order to study the step coverage improvement by the bias application. It is deduced that the aluminum flowage occurs so that the surface energy is minimized around the via hole. Aluminum films deposited with the pulsed biasing were characterized in which the possible microstructual damage by argon bombardment is to be minimized. This biasing technique should provide with a better process for the step coverage improvement. A sputtering cathode was developed for aluminum bias sputtering which has a substrate current capability as high as 2A for a 5 inch wafer at the substrate voltage around-50V.
Phua, Mui-How,Ling, Zia-Yiing,Wong, Wilson,Korom, Alexius,Ahmad, Berhaman,Besar, Normah A.,Tsuyuki, Satoshi,Ioki, Keiko,Hoshimoto, Keigo,Hirata, Yasumasa,Saito, Hideki,Takao, Gen Institute of Forest Science 2014 Journal of Forest Science Vol.30 No.2
Estimating above-ground biomass is important in establishing an applicable methodology of Measurement, Reporting and Verification (MRV) System for Reducing Emissions from Deforestation and Forest Degradation-Plus (REDD+). We developed an estimation model of diameter at breast height (DBH) from IKONOS-2 image that led to above-ground biomass estimation (AGB). The IKONOS image was preprocessed with dark object subtraction and topographic effect correction prior to watershed segmentation for tree crown delineation. Compared to the field observation, the overall segmentation accuracy was 64%. Crown detection percent had a strong negative correlation to tree density. In addition, satellite-based crown area had the highest correlation with the field measured DBH. We then developed the DBH allometric model that explained 74% of the data variance. In average, the estimated DBH was very similar to the measured DBH as well as for AGB. Overall, this method can potentially be applied to estimate AGB over a relatively large and remote tropical forest in Northern Borneo.
Mui-How Phua,Zia-Yiing Ling,Wilson Wong,Alexius Korom,Berhaman Ahmad,Normah A. Besar,Satoshi Tsuyuki,Keiko Ioki,Keigo Hoshimoto,Yasumasa Hirata,Hideki Saito,Gen Takao 강원대학교 산림과학연구소 2014 Journal of Forest Science Vol.30 No.2
Estimating above-ground biomass is important in establishing an applicable methodology of Measurement, Reporting and Verification (MRV) System for Reducing Emissions from Deforestation and Forest Degradation-Plus (REDD+). We developed an estimation model of diameter at breast height (DBH) from IKONOS-2 image that led to above-ground biomass estimation (AGB). The IKONOS image was preprocessed with dark object subtraction and topographic effect correction prior to watershed segmentation for tree crown delineation. Compared to the field observation, the overall segmentation accuracy was 64%. Crown detection percent had a strong negative correlation to tree density. In addition, satellite-based crown area had the highest correlation with the field measured DBH. We then developed the DBH allometric model that explained 74% of the data variance. In average, the estimated DBH was very similar to the measured DBH as well as for AGB. Overall, this method can potentially be applied to estimate AGB over a relatively large and remote tropical forest in Northern Borneo.