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| 1 | Trehalose Biosynthesis in Response to Abiotic Stresses显示文摘Trehalose is a non-reducing disaccharide that is present in diverse organisms ranging from bacteria and fungi to invertebrates, in which it serves as an energy source, osmolyte or protein/membrane protectant. The occurrence of trehalose and trehalose biosynthesis pathway in plants has been discovered recently. Multiple studies have revealed regulatory roles of trehalose-6-phosphate, a precursor of trehalose, in sugar metabolism, growth and development in plants. Trehalose levels are generally quite low in plants but may alter in response to environmental stresses. Transgenic plants overexpressing microbial trehalose biosynthesis genes have been shown to contain increased levels of trehalose and display drought, salt and cold tolerance. In-silico expression profiling of all Arabidopsis trehalose-6-phosphate synthases (TPSs) and trehalose-6-phosphate phosphatases (TPPs) revealed that certain classes of TPS and TPP genes are differentially regulated in response to a variety of abiotic stresses. These studies point to the importance of trehalose biosynthesis in stress responses. | Mihaela Iordachescu Ryozo Imai | 2008 | Journal of Integrative Plant Biology2008，50，10： | 24 |
| 2 | A numerical study of summer ozone concentration over the Kanto area of Japan using the MM5/CMAQ model显示文摘We assessed the ability of the MM5/CMAQ model to predict ozone (O 3) air quality over the Kanto area and to investigate the factors that affect simulation of O 3.We find that the coupled MM5/CMAQ model is a useful tool for the analysis of urban environmental problems.The simulation results were compared with observational data and were found to accurately replicate most of the important observed characteristics.The initial and boundary conditions were found to have a significant effect on simulated O3 concentrations.The results show that on hot and dry days with high O3 concentration,the CMAQ model provides a poor simulation of O3 maxima when using initial and boundary conditions derived from the CMAQ default data.The simulation of peak O3 concentrations is improved with the JCAP initial and boundary conditions.On mild days,the default CMAQ initial and boundary conditions provide a more realistic simulation.Meteorological conditions also have a strong impact on the simulated distribution and accumulation of O3 concentrations in this area.Low O3 concentrations are simulated during mild weather conditions,and high concentrations are predicted during hot and dry weather.By investigating the effects of different meteorological conditions on each model process,we find that advection and diffusion differ the most between the two meteorological regimes.Thus,differences in the winds that govern the transport of O3 and its precursors are likely the most important meteorological drivers of ozone concentration over the central Kanto area. | Mai Khiem Ryozo Ooka Hong Huang Hiroshi Hayami | 2011 | Journal of Environmental Sciences2011，23，2： | 12 |
| 3 | Gain-scheduling control of a floating offshore wind turbine above rated wind speed显示文摘This paper presents an application of gain-scheduling(GS) control techniques to a floating offshore wind turbine on a barge platform for above rated wind speed cases. Special emphasis is placed on the dynamics variation of the wind turbine system caused by plant nonlinearity with respect to wind speed. The turbine system with the dynamics variation is represented by a linear parameter-varying(LPV) model, which is derived by interpolating linearized models at various operating wind speeds. To achieve control objectives of regulating power capture and minimizing platform motions, both linear quadratic regulator(LQR) GS and LPV GS controller design techniques are explored. The designed controllers are evaluated in simulations with the NREL 5 MW wind turbine model, and compared with the baseline proportional-integral(PI) GS controller and non-GS controllers. The simulation results demonstrate the performance superiority of LQR GS and LPV GS controllers, as well as the performance trade-off between power regulation and platform movement reduction. | Omid BAGHERIEH Ryozo NAGAMUNE | 2015 | Control Theory and Technology2015，13，2： | 5 |
| 4 | Investigation on heat transfer enhancement and pressure loss of double swirl chambers cooling显示文摘By merging two standard swirl chambers,an alternative cooling configuration named double swirl chambers(DSC)has been developed.In the DSC cooling configuration,the main physical phenomena of the swirl flow in swirl chamber and the advantages of swirl flow in heat transfer augmentation are maintained.Additionally,three new physical phenomena can be found in DSC cooling configuration,which result in a further improvement of the heat transfer:(1)impingement effect has been observed,(2)internal heat exchange has been enhanced between fluids in two swirls,and(3)“∞”shape swirl has been generated because of cross effect between two chambers,which improves the mixing of the fluids.Because of all these improvements,the DSC cooling configuration leads to a higher globally-averaged thermal performance parameter(Nu/Nu_(∞)/(f/f0)^(1/3))than standard swirl chamber.In particular,at the inlet region,the augmentation of the heat transfer is nearly 7.5 times larger than the fully developed non-swirl turbulent flow and the circumferentially averaged Nusselt number coefficient is 41%larger than the standard swirl chamber.Within the present work,a further investigation on the DSC cooling configuration has been focused on the influence of geometry parameters e.g.merging ratio of chambers and aspect ratio of inlet duct on the cooling perfomance.The results show a very large influence of these geometry parameters in heat transfer enhancement and pressure drop ratio.Compared with the basic configuration of DSC cooling,the improved configuration with 20%to 23%merging ratio shows the highest globally-averaged themal performance parameter.With the same cross section area in tangential inlet ducts,the DSC cooling channel with larger aspect ratio shows larger heat transfer enhancement and at the same time reduced pressure drop ratio,which results in a better globally-averaged themal performance parameter. | Gang Lin Karsten Kusterer Dieter Bohn Takao Sugimoto Ryozo Tanaka Masahide Kazari | 2013 | Propulsion and Power Research2013，2，3： | 3 |
| 5 | Conjugate calculation of a film-cooled blade for improvement of the leading edge cooling configuration显示文摘Great efforts are still put into the design process of advanced film-cooling configurations.In particular,the vanes and blades of turbine front stages have to be cooled extensively for a safe operation.The conjugate calculation technique is used for the three dimensional thermal load prediction of a fim-cooled test blade of a modern gas turbine.Thus,it becomes possible to take into account the interaction of internal flows,external flow,and heat transfer without the prescription of heat transfer ooefficients.The focus of the investigation is laid on the leading edge part of the blade.The numerical model consists of all internal flow passages and cooling hole rows at the leading edge.Furthermore,the radial gap flow is also part of the model.The comparison with thermal pyrometer measurements shows that with respect to regions with high thermal load a qualitatively and quantitatively good agreement of the conjugate results and the measurements can be found.In particular,the region in the vicinity of the mid-span section is exposed to a higher thermal load,which requires further improvement of the cooling arrangement.Altogether the achieved results demonstrate that the conjugate calculation technique is applicable for reasonable prediction of three-dimensional thermal load of complex cooling configurations for blades. | Norbert Moritz Karsten Kusterer Dieter Bohn Takao Sugimoto Ryozo Tanaka Tomoki Taniguchi | 2013 | Propulsion and Power Research2013，2，1： | 3 |
| 6 | Spatiotemporal changes of coxsackievirus and adenovirus receptor in rat hearts during postnatal development and in cultured cardiomyocytes of neonatal rat显示文摘 | Takeshi Kashimura Makoto Kodama Yuko Hotta Junichi Hosoya Kaori Yoshida Takuya Ozawa Ritsuo Watanabe Yuji Okura Kiminori Kato Haruo Hanawa Ryozo Kuwano Yoshifusa Aizawa | 2004 | Virchows Archiv2004，，3： | 2 |
| 7 | Double-loop robust tracking control for micro machine tools显示文摘This paper addresses double-loop robust tracking controller design of the miniaturized linear motor drive precision stage with mass and damping ratio uncertainties.As an inner-loop,a disturbance observer(DOB) is employed to suppress exogenous low frequency disturbances such as friction and cutting force.To further eliminate the residual disturbance and to guarantee the robust tracking to the reference input,a-synthesis outer-loop controller is designed.For eliminating the steady state error,a technique is proposed to design the-synthesis outer-loop controller with an integrator.A guideline to select the bandwidth of the Q-filter in the DOB is provided.Simulations using a model of a prototype micro-milling machine indicate that the proposed outer-loop synthesis scheme is superior to the H suboptimal control in disturbance rejection performance and steady state tracking performance.Furthermore,it is shown experimentally that the proposed double-loop robust tracking controller improves the tracking performance of the stage by 29.6% over PID control with a DOB inner-loop. | FAN ShiXun NAGAMUNE Ryozo FAN DaPeng | 2011 | Science China(Technological Sciences)2011，54，11： | 2 |
| 8 | Seismic proof test of a reinforced concrete containment vessel (RCCV)显示文摘 | Toshihiko Hirama Masashi Goto Keiji Shiba Toshio Kobayashi Ryozo Tanaka Shizuo Tsurumaki Katsuki Takiguchi Hiroshi Akiyama | 2005 | Nuclear Engineering and Design2005，，13： | 2 |
| 9 | Platform motion minimization using model predictive control of a floating offshore wind turbine显示文摘Wind turbines are installed offshore with the assistance of a floating platform to help meet the world’s increasing energy needs.However,the incident wind and extra incident wave disturbances have an impact on the performance and operation of the floating offshore wind turbine(FOWT)in comparison to bottom-fixed wind turbines.In this paper,model predictive control(MPC)is utilized to overcome the limitation caused by platform motion.Due to the ease of control synthesis,the MPC is developed using a simplified model instead of high fidelity simulation model.The performance of the controller is verified in the presence of realistic wind and wave disturbances.The study demonstrates the effectiveness of MPC in reducing platform motions and rotor/generator speed regulation of FOWTs. | Kamran Ali Shah Ye Li Ryozo Nagamune Yarong Zhou Waheed Ur Rehman | 2021 | Theoretical & Applied Mechanics Letters2021，11，5： | 2 |
| 10 | H∞position transfer and regulation for floating offshore wind turbines显示文摘This paper proposes H∞controller design for platform position transfer and regulation of floating offshore wind turbines.The platform movability of floating wind turbines can be utilized in mitigating the wake effect in the wind farm,thereby maximizing the wind farm's total power capture and efficiency.The controller is designed so that aerodynamic force is adjusted to meet the three objectives simultaneously,that is,1)to generate the desired electrical power level,2)to achieve the desired platform position,and 3)to suppress the platform oscillation.To acquire sufficient aerodynamic force to move the heavy platform,the pitch-to-stall blade pitching strategy is taken instead of the commonly-used pitch-to-feather strategy.The desired power level is attained by the standard constant-power strategy for the generator torque,while Hstate-feedback control of blade pitch and nacelle yaw angles is adopted for the position regulation and platform oscillation suppression.Weighting constants for the H∞controller design are adjusted to take the trade-off between the position regulation accuracy and the platform motion reduction.To demonstrate the efficiency of the proposed controler,a virtual 5-MW semi-submersible wind turbine is considered.Simulation results show that the designed H∞controller successfully accomplishes the platform position transfer and regulation as well as the platform oscillation reduction against wind and wave disturbances,and that it outperforms a previously-proposed linear quadratic controller with an integrator. | Eduardo Eribert ESCOBAR AQUINO Ryozo NAGAMUNE | 2020 | Control Theory and Technology2020，18，3： | 2 |
| 11 | Changes in serum cholesterol levels determine future risk of cardiovascular events in patients with acute coronary syndrome in the Japanese Coronary Artery Disease (JCAD) Study显示文摘 | Shota Fukuda Kenei Shimada Masatoshi Fujita Minoru Yoshiyama Junichi Yoshikawa Takahide Kohro Doubun Hayashi Tsutomu Yamazaki Ryozo Nagai | 2013 | Journal of Cardiology2013，，6： | 1 |
| 12 | In Vivo klotho Gene Transfer Ameliorates Angiotensin II-Induced Renal Damage显示文摘 | Haruo Mitani Nobukazu Ishizaka Toru Aizawa Minoru Ohno Shin-ichi Usui Toru Suzuki Toshihiro Amaki Ichiro Mori Yasushi Nakamura Misako Sato Masaomi Nangaku Yasunobu Hirata Ryozo Nagai | 2002 | Hypertension: Journal of the American Heart Association2002，，4： | 1 |
| 13 | 尼可地尔在日本冠状动脉疾病研究(JCAD)中对冠状动脉疾病患者心血管事件的影响显示文摘背景背景尼可地尔在心肌缺血及模拟心肌缺血预适应时具有心血管保护作用,由此推测尼可地尔可改善缺血性心脏病(IHD)的预后。在日本冠状动脉疾病研究(JCAD)中,由多中心协作进行的前瞻性观察研究,在大量的冠状动脉疾病患者中检验了尼可地尔对结果的影响。方法及结果及结果在JCAD研究项目中登记的13812名患者,经倾向评分法尼可地尔实验组及对照组匹配出每组2558名患者,平均随访时间为2.7年。以各种死亡原因为主要评价指标,尼可地尔实验组该指标较对照组显著降低35%(风险比率为0.65,P=0.0008),并在次要指标上,具体包括心性死亡(56%)、心肌梗死(56%)、脑血管病致死(7 1%)、充血性心衰(33%),尼可地尔组也有显著的降低,且未超过其他非心脑血管因素。尼可地尔介入治疗组可将全因死亡率减少到与经过或未经磺脲类治疗患者相似的程度。结论尼可地尔能使缺血性心脏病(IHD)患者的心血管致死率大大降低,这对治疗具有重要意义。 | ShigeoHorinaka AkihisaYabe HiroshiYagi ToshihikoIshimitsu TsutomuYamazaki ShinyaSuzuki TakahideKohro Ryozo Nagai 陈浩(译) | 2016 | 首都食品与医药2016，0，2： | 1 |
| 14 | Species differences in metabolism of sodium 2- propionate dihydrate (loxoprofen sodium), a new anti-inflammatory agent 显示文摘 | Yorihisa Tanaka Yuko Nishikawa Ryozo Hayashi | 1983 | Chem Pharm Bull1983，31，10： | 1 |
| 15 | Photoelectrochemical sterilization of microbial cells by semiconductor powers显示文摘 | Tadashi M Ryozo T | | FEMS Microbiology Letters0，29，： | 1 |
| 16 | Dietary γ-linoleic acid enriched oil reduces body fat content and induce liver enzyme activities relating to fatty acid β-oxidation in rats显示文摘 | Ryozo T | 1994 | Nutr1994，124，： | 1 |
| 17 | Different Roles of PPAR-γ Activity on Physiological and Pathological Alteration After Myocardial Ischemia显示文摘 | Ayako Nagashima Ryo Watanabe Masahito Ogawa Jun-ichi Suzuki Mayumi Masumura Keiichi Hishikari Tomoko Shimizu Kiyoshi Takayama Yasunobu Hirata Ryozo Nagai Mitsuaki Isobe | 2012 | Journal of Cardiovascular Pharmacology2012，，2： | 1 |
| 18 | Extracapsular invasion of small hepatocellular carcinoma: MR and CT findings 显示文摘 | Takeyoshi I Masayuki K Ryozo M | 1994 | JCAT1994，18，5： | 1 |
| 19 | Regulation of smooth muscle phenotype显示文摘 | Ichiro Manabe MD Ryozo Nagai MD | 2003 | Current Atherosclerosis Reports2003，，3： | 1 |
| 20 | Multi-variable Optimization of HVAC System Using a Genetic Algorithm显示文摘 | Rongling Li Ryozo Ooka | 2014 | Journal of Energy and Power Engineering2014，8，2： | 1 |
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