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Numerical and experimental analysis of a counter-rotating type horizontal-axis tidal turbine
Bin Huang,Yuji Nakanishi,Toshiaki Kanemoto 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.2
In order to exploit renewable energies form tidal currents, a unique counter-rotating type horizontal-axis tidal turbine was proposed in this paper. Although a counter-rotating type horizontal-axis wind turbine can be taken as a reference in designing the proposed counterrotating tidal turbine, there are some different characteristics such as the effects of the free surface and the occurrence of cavitation. The unique tidal turbine in this paper was preliminarily designed on the basis of the in-house wind turbine, and then CFD analysis and experimental test were carried out to evaluate its performance. For the extreme conditions where severe flow separation and vortex exist, the comparison of the power coefficients generated by the turbine between the CFD predictions and the experimental data shows not so good. However, good agreement has been obtained for the comfortable blade pitch setting angles and over a range of tip speed ratios, which provides an evidence of validation of CFD analysis. Such results give sufficient confidence that the CFD model set up here is suitable for the further works.
Biometric Identity Verification Using Intra-Body Propagation Signal
Yasuhiro YORIKANE,Yuji NISHIO,Isao NAKANISHI,Yoshio ITOH,Yutaka FUKUI 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
We propose to utilize an electromagnetic wave through a human body as biometrics. The electromagnetic wave (intra-body propagation signal) is generated at a relatively shallow depth in the human body through a pair of electrodes pasted on the human skin. The transfer characteristic of the intra-body propagation signal in each individual human being is different from those of others because human tissue characteristics vary widely. By using such a difference, it is expected to authenticate personal identification. In addition, liveness detection can be realized using the intra-body propagation signal. It is effective on preventing the disguise using artificial bodies. In this paper, we examined the individual feature in the intra-body propagation signal based on the spectrum analysis. We obtained a verification rate of 58% using the similarity in power spectrum especially in the 30-60 ㎒ sub-band.
Uchino, Junji,Hirano, Ryosuke,Tashiro, Naoki,Yoshida, Yuji,Ushijima, Shinichiro,Matsumoto, Takemasa,Ohta, Keiichi,Nakatomi, Keita,Takayama, Koichi,Fujita, Masaki,Nakanishi, Yoichi,Watanabe, Kentaro Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8
Aims and Background: To evaluate the efficacy of a combination of aprepitant and conventional antiemetic therapy in patients with advanced or recurrent lung cancer receiving moderately emetogenic chemotherapy (MEC). Methods: Patients with advanced or recurrent lung cancer who were treated with MEC regimens at the Department of Respiratory Medicine, Fukuoka University Hospital, were included and classified into the following groups: control group (treatment: 5-HT3 receptor antagonists + dexamethasone) and aprepitant group (treatment: 5-HT3 receptor antagonists + dexamethasone + aprepitant). The presence or absence of chemotherapy-induced nausea and vomiting (CINV) was evaluated according to the Common Terminology Criteria for Adverse Events (CTCAE) v4.0; patients with grade 1 or above were considered positive for CINV. Food intake per day, completion of planned chemotherapy, and progression-free survival (PFS) achieved by chemotherapy were investigated. Results: The complete suppression rate of nausea in the aprepitant group was significantly higher than that in the control group (p = 0.0043). Throughout the study, the food intake in the aprepitant group was greater than that in the control group, with the rate being significantly higher, in particular, on day 5 (p = 0.003). The completion rate of planned chemotherapy was also higher in the aprepitant group (p = 0.042). PFS did not differ significantly, but tended to be improved in the aprepitant group. Conclusions: The aprepitant group showed significantly higher complete suppression of nausea, food intake on day 5, and completion of planned chemotherapy than the control group.
Development of a Cloud Profiling FM-CW Radar at 95 GHz and its Performance
Toshiaki TAKANO,Yumiro SUGA,Ken-ichi AKITA,Youhei KAWAMURA,Kurt SAKAI,Hiroshi KUMAGAI,Hiroshi KUROIWA,Yuichi OHNO,Hiroaki Horie,Tamio TAKAMURA,Yuji NAKANISHI,Teruyuki NAKAJIMA 대한전자공학회 2003 ITC-CSCC :International Technical Conference on Ci Vol.2003 No.7