http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
State and Parameter Estimation for Tubular Microreactors Using Particle Filter
Jun-ichi Kano,Osamu Tonomura,Manabu Kano,Shinji Hasebe 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Micro Chemical Processes (MCPs) are constructed of micrometer scale channels. The characteristics of MCPs are rapid mixing due to short diffusion distances and accurate temperature control due to large surface-volume ratio. Therefore, MCPs make it possible to realize the production of specialty chemicals, which cannot be handled in conventional processes. To realize stable long-term operation of MCPs, it is necessary to detect the catalyst deterioration and the blockage which are the critical problems in the operation of MCPs. For example, the catalyst deterioration and the blockage are detected through the concentration meters and the flow meters installed in microchannels respectively. However, the installation of such sensors sometimes disturbs the flow. In addition, the existing miniaturized sensors are too expensive. Therefore, it is necessary to develop a monitoring system of MCPs using the state and parameter estimation. In this work, a monitoring system based on physical models and wall temperature measurements for Tubular Microreactor (TMR) is developed. It is described that Particle Filter (PF) can detect the catalyst deterioration of TMR more rapidly and accurately than Extended Kalman Filter (EKF).
Enhancement of critical heat flux with additive-manufactured heat-transfer surface
Kano Tatsuya,Ono Rintaro,Furuya Masahiro 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.7
In-Vessel Retention (IVR) is a key technology to retain the molten core in the reactor vessel during severe accidents of Pressurized-water reactors (PWRs). In order to gain the safety margin of IVR, it is crucial to enhance the critical heat flux (CHF) of the reactor vessel, which is submerged in a water pool. To enhance the CHF, we have designed and additive-manufactured porous grid plates with a 3-D printer for design flexibility. We measured the CHF for the porous grid plate on the boiling heat transfer surface and found that the CHF was enhanced by 50 % more than that of the bare surface. The CHF enhanced more with a narrower grid pitch and a lower grid height. The visual observation study revealed that the vapor film was formed at the bottom of the grid plate.
Kano, Hideyuki,Kondziolka, Douglas,Flickinger, John C,Yang, Huai-che,Park, Kyung-Jae,Flannery, Thomas J,Liu, Xiaomin,Niranjan, Ajay,Lunsford, L Dade American Heart Association] 2012 Stroke Vol.43 No.10
<P>The purpose of this study was to define the risk of rebleeding after stereotactic radiosurgery (SRS) for hemorrhagic arteriovenous malformations with or without associated intracranial aneurysms.</P>
Stereotactic radiosurgery for arteriovenous malformations after embolization: a case-control study
Kano, Hideyuki,Kondziolka, Douglas,Flickinger, John C.,Park, Kyung-Jae,Iyer, Aditya,Yang, Huai-che,Liu, Xiaomin,Monaco, Edward A.,Niranjan, Ajay,Lunsford, L. Dade Journal of Neurosurgery Publishing Group 2012 Journal of Neurosurgery Vol.117 No.2
<B>Object</B><P>In this paper the authors' goal was to define the long-term benefits and risks of stereotactic radiosurgery (SRS) for patients with arteriovenous malformations (AVMs) who underwent prior embolization.</P><B>Methods</B><P>Between 1987 and 2006, the authors performed Gamma Knife surgery in 996 patients with brain AVMs; 120 patients underwent embolization followed by SRS. In this series, 64 patients (53%) had at least one prior hemorrhage. The median number of embolizations varied from 1 to 5. The median target volume was 6.6 cm<SUP>3</SUP> (range 0.2-26.3 cm<SUP>3</SUP>). The median margin dose was 18 Gy (range 13.5-25 Gy).</P><B>Results</B><P>After embolization, 25 patients (21%) developed symptomatic neurological deficits. The overall rates of total obliteration documented by either angiography or MRI were 35%, 53%, 55%, and 59% at 3, 4, 5, and 10 years, respectively. Factors associated with a higher rate of AVM obliteration were smaller target volume, smaller maximum diameter, higher margin dose, timing of embolization during the most recent 10-year period (1997-2006), and lower Pollock-Flickinger score. Nine patients (8%) had a hemorrhage during the latency period, and 7 patients died of hemorrhage. The actuarial rates of AVM hemorrhage after SRS were 0.8%, 3.5%, 5.4%, 7.7%, and 7.7% at 1, 2, 3, 5, and 10 years, respectively. The overall annual hemorrhage rate was 2.7%. Factors associated with a higher risk of hemorrhage after SRS were a larger target volume and a larger number of prior hemorrhages. Permanent neurological deficits due to adverse radiation effects (AREs) developed in 3 patients (2.5%) after SRS, and 1 patient had delayed cyst formation 210 months after SRS. No patient died of AREs. A larger 12-Gy volume was associated with higher risk of symptomatic AREs. Using a case-control matched approach, the authors found that patients who underwent embolization prior to SRS had a lower rate of total obliteration (p = 0.028) than patients who had not undergone embolization.</P><B>Conclusions</B><P>In this 20-year experience, the authors found that prior embolization reduced the rate of total obliteration after SRS, and that the risks of hemorrhage during the latency period were not affected by prior embolization. For patients who underwent embolization to volumes smaller than 8 cm<SUP>3</SUP>, success was significantly improved. A margin dose of 18 Gy or more also improved success. In the future, the role of embolization after SRS should be explored.</P>
Development of Simulator of Allophone of Motors for Automobiles
Ryo Kano,Hiroyasu Ohtake,Yoshifumi Morita,Makoto Iwasaki,Hiroyuki Ukai,Yasuhiko Mukai,Hideki Kabune,Norihisa Ito 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10
Recently reduction of allophone of motors for automobiles has received a great deal of attention. For this background, the final goal of our research is to develop a simulator for transfer characteristics of allophone of motors in automobiles. In this paper at the preparation phase for the development of a simulator, we investigated the applicability of the transfer function synthesis method (TFSM) experimentally. Additionally, we examined some problems to be solved for practical use of the TFSM by using the finite element method (FEM). As a result, it was found that the derivation of the transfer functions H22 and H33 at the connecting point was difficult and that the modeling accuracy of H22 and H33 had a large influence on the modeling accuracy of the total transfer function H41_sim. Moreover, the method to improve the modeling accuracy was proposed on the basis of the results by FEM analysis. It was confirmed that we could apply the TFSM to the simple test body with the contact area by using the proposed method and the adjustment for damping coefficient of the transfer function obtained by the curve fitting technique (CFT).
LONG LIFE DURABILITY OF SEVERAL GEOMEMBRANES
( Hikaru Kano ),( Etsuji Uenoyama ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
In waste disposal landfill, Geomembranes have important mission that they do not leak out leachet immersed out from waste disposal for a long time. Geomembranes are showed long life durability under the condition which Geomembranes contact leachet on the bottom of landfill and expose sever natural circumstance on the slope of it. We study the durability of several Geomembranes for factors of destruction, that is, resistances of water, acids, alkalis, heat aging and ultra violet occurred in waste disposal landfill.
Manabu Kano,Sanghong Kim,Ryota Okajima,Shinji Hasebe 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
Virtual sensing technology is crucial to realize high product quality and productivity in any industry, but model maintenance is the most critical issue because the estimation accuracy deteriorates due to changes in processes characteristics and operating conditions. In order to realize maintenance-free high-performance virtual sensing, locally weighted partial least squares (LW-PLS) was proposed and has been successfully applied to various industrial processes. In this article, the algorithm of LW-PLS is explained focusing on the effect of similarity measures on the estimation performance. In addition, several industrial applications of LW-PLS are presented.