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Unsteady Operation of New Type Turbofan Engine with Aerodynamic Torque Converter Reducing Front Fan Speed

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Journal of Thermal Science 2005年第3期14卷 206-210页

作者： Toshiaki KANEMOTO Seita SEKI kazunori IDENO Ahmed Mohamed GALAL Kyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 Japan ProfessorKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 JapanKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 JapanKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 Japan

It is desired to increase the rotational speed of the core engine of the turbofan so as to get the best efficiency for the next leap of engine technology. The conventional mechanism in which the front fan is directly connected to the output shaft of a core engine, have a limit of increasing the spool speed, because the fan diameter is very large. The authors have proposed a new driving system in which the front fan is driven through the aerodynamic torque converter. The front fan can work at the best performance at slower speed while the core engine runs more efficiently at higher speed. Continuously, this paper discusses the response of the front fan in the unsteady operation of the core engine, accompanying with the internal flow. The system has the acceptable responsibility in the unsteady operation which is very important for the aircrafts.

关键词：涡轮发动机空气动力学鼓风机转动速度

Interaction of activity involvement and recreational location selection behavior in Lowland City:A case study of public parks in Saga City,Japan

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2005年第8期6卷 900-906页

作者： IAMTRAKUL Pawinee TEKNOMO Kardi GE Jian HOKAO kazunori Department of Civil Engineering Saga University Saga 840-8502 Japan Institute of Lowland Technology Saga University Saga 840-8502 Japan Department of Architecture Zhejiang University Hangzhou 310058 China

Public parks provide many benefits to the community as the representatives of green area. The allocation of public places plays an extremely important role in the daily lives of inhabitants especially for recreational use that could enhance the quality of life of residents in the vicinity. To understand park users’ behavior is one of the most important prerequisites for as-sessing the participation in public service from the park users’ point of view. The pattern of park utilization on location and activity selection are important elements in behavioral study, while the public parks topograph may also influence the typical user’s be-havior. Questionnaire survey on park utilization was used to investigate the interaction between activity involvement and recrea-tional location with the use of linear discriminant analysis (LDA) model. The study found that public park users’ behavior is influenced not only by social characteristics but also by the recreational activities and their specific location characteristics. We found that about 45 percent of park visitors are local residents living within a radius of 3 km preferred travel to parks near their residential area. This implies that location selection behavior is correlated with travel distance, travel time and travel cost. Visit frequencies and on site expenditures reflect the recreation behavior for different type of activities. The overall information can be usefully applied by decision makers to launch appropriate public policy in consistence with the useful results of this study.

关键词：城市规划公园设计生活质量环境评估

Temporal adjustment of short calls according to a partner during vocal turn-taking in Japanese macaques

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Current Zoology 2019年第1期65卷 99-105页

作者： Noriko KATSu kazunori Yamada Kazuo Okanoya Masayuki Nakamichi Graduate School of Arts and Sciences The University of Tokyo Meguro Tokyo Japan Graduate School of Human Sciences Osaka University Suita Osaka Japan Japan Society for the Promotion of Science Tokyo Japan

Turn-taking is a common feature in human speech, and is also seen in the communication of other primate species. However, evidenee of turn-taking in vocal exchanges within a short time frame is still scarce in non human primates. This study in vestigated whether dynamic adjustme nt during turn-taking in short calls exists in Japanese macaques Macaca fuscata. We observed exchanges of short calls such as grunts, girneys, and short, low coos during social interactions in a free-ranging group of Japanese macaques. We found that the median gap between the turns of two callers was 250 ms. Call intervals varied among individuals, suggesting that call intervals were not fixed among individuals. Solo call intervals were shorter than call intervals interrupted by responses from partn ers (i.e., excha nges) and Ion ger than those between the partner's reply and the reply to that call, indicating that the monkeys did not just repeat calls at certain intervals irrespective of the social situation. The differences in call intervals during exchanged and solo call sequences were explained by the response interval of the partner, suggesting an adjustment of call timing according to the tempo of the part ner's call utterance. These findi ngs suggest that mon keys display dyn amic temporal adjustment in a short time window, which is comparable with turn-taking in human speech.

关键词： turn-taking rhythm vocalization primate

Beneficial effects of fucoidan in patients with chronic hepatitis C virus infection

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World Journal of Gastroenterology 2012年第18期18卷 2225-2230页

作者： Naoki Mori kazunori Nakasone Koh Tomimori Chie Ishikawa Department of Microbiology and Oncology Graduate School of MedicineUniversity of the RyukyusNishiharaOkinawa 903-0215Japan Nakasonekazu Medical Clinic NahaOkinawa 902-0062Japan Department of Psychiatry Naha City HospitalNahaOkinawa 902-8511Japan Transdisciplinary Research Organization for Subtropics and Island Studies University of the RyukyusNishiharaOkinawa 903-0213Japan

AIM:To evaluate the effects of fucoidan,a complex sulfated polysaccharide extract from marine seaweed,on hepatitis C virus(HCV) RNA load both in vitro and in ***:HCV-1b replicon-expressing cells were cultured in the presence of fucoidan obtained from Cladosiphon okamuranus Tokida cultivated in Okinawa,Japan,and quantified the level of HCV *** an open-label uncontrolled study,15 patients with chronic hepatitis C,and HCV-related cirrhosis and hepatocellular carcinoma were treated with fucoidan(0.83 g/d) for 12 *** clinical symptoms,biochemical tests,and HCV RNA levels were assessed before,during,and after ***:Fucoidan dose-dependently inhibited the expression of HCV *** 8-10 mo of treatment with fucoidan,HCV RNA levels were significantly lower relative to the *** same treatment also tended to lower serum alanine aminotransferase levels,and the latter correlated with HCV RNA ***,the improved laboratory tests did not translate into significant clinical *** had no serious adverse ***:Our findings suggest that fucoidan is safe and useful in the treatment of patients with HCVrelated chronic liver *** controlled clinical trials are needed to confirm the present findings.

关键词：褐藻多糖硫酸酯丙型肝炎病毒有益作用病毒感染慢性患者海藻硫酸多糖临床症状

A Brief Review of Bone Adaptation to Unloading

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Genomics, Proteomics & Bioinformatics 2008年第1期6卷 4-7页

作者： kazunori Hamamura Hiroki Yokota Department of Biomedical Engineering/Department of Anatomy and Cell Biology Indiana University-Purdue University IndianapolisIndianapolis IN 46202 USA

Weight-bearing bone is constantly adapting its structure and function to mechanical environments. Loading through routine exercises stimulates bone formation and prevents bone loss, but unloading through bed rest and cast immobilization as well as exposure to weightlessness during spaceflight reduces its mass and strength. In order to elucidate the mechanism underlying unloading-driven bone adaptation, ground-based in vitro and in vivo analyses have been conducted using rotating cell culturing and hindlimb suspension. Focusing on gene expression studies in osteoblasts and hindlimb suspension studies, this minireview introduces our recent understanding on bone homeostasis under weightlessness in space. Most of the existing data indicate that unloading has the opposite effects to loading through common signaling pathways. However, a question remains as to whether any pathway unique to unloading （and not to loading） may exist.

关键词： weightlessness unloading osteocytes

Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach

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电力系统保护与控制 2013年第1期41卷 183-189页

作者： Zhang Jie yokoyama Ryuichi She Jinhua Wu Win Waseda University Japan Tokyo 169-8050 Tokyo University of Technology Japan Tokyo 192-0982 Central South University Changsha 410083

One problem with a single source three-level inverter is the drafting of its neutral-point voltage. This may occur during transition or when unbalanced loads are connected to the inverter system. Wiation of neutral-point voltage may greatly deteriorate the power quality. In this paper, we employ an equivalent-input-disturbance approach to deal with this problem. By adding an extra neutral leg, the control problem of neutral-point voltage is converted to a disturbance rejection problem. This method suppresses the variation of the neutral-point voltage to a low level and reduces the capacity of DC-link capacitors. Simulation results show the effectiveness of the method.

关键词： inverter multi-level neutral-point voltage EID disturbance

Isolation and characterization of Xenopus laevis homologs of the mouse inv gene and functional analysis of the conserved calmodulin binding sites

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Cell Research 2006年第4期16卷 337-346页

作者： YukutoYasuhiko KoichiroShiokawa Toshio Mochizuki Makoto Asashima Takahiko yokoyama Department of Biological Sciences Graduate School of ScienceUniversity of Tokyo7-3-1 HongoBunkyo-kuToyo113-0033Japan Department of Medicine Kidney CenterTokyo Women's Medical UniversitySchool of MedicineJapan Department of Life Science University of Tokyo3-8-1 Komaba.Meguro-kuTokyo 158-8902.Japan Department of Anatomy and Developmental Biology Tokyo Women's Medical College8-1 Kawada-choShinjuku-kuTokyo 162-8666Japan

The homozygous inv(inversion of embryonic turning)mouse mutant shows situs inversus and polycystic kidney disease,both of which result from the lack of the inv ***,we suggested that inv may be important for the ieft-rightaxis formation,not only in mice but also in Xenopus,and that calmodulin regulates this inv protein ***,weisolated and characterized two Xenopus laevis homologs(Xinv-1 and Xinv-2)of the mouse inv gene,and performedfunctional analysis of the conserved IQ motifs that interact with ***-1 expresses early in development in thesame manner as mouse inv ***,a full-length Xenopus inv mRNA did not randomize cardiac orientationwhen injected into Xenopus embryos,which is different from mouse inv *** to mouse inv mRNA,Xenopusinv mRNA with mutated IQ randomized cardiac *** present study indicates that calmodulin binding sites(IQ motifs)are crucial in controlling the biological activity of both mouse and Xenopus inv *** mouseand Xenopus inv genes have a quite similar structure,the interaction with calmodulin and IQ motifs ofXenopus inv andmouse inv proteins may regulate their function in different ways.

关键词： Left-right asymmetry inv calmodulin ankyrin IQ motif Xenopus calcium

A hybrid multi-objective optimization method considering optimization problems in power distribution systems

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Journal of Modern Power Systems and Clean Energy 2015年第1期3卷 41-50页

作者： Ken KURODA Hideki MAGORI Tomiyasu ICHIMURA Ryuichi yokoyama Waseda University Shinjuku-kuTokyo 91107Japan Fujitsu Limited Ohta-kuTokyo 144-8588Japan

Various kinds of new engineering technologies have been studied to realize the low-carbon and sustainable power supply systems all over the *** actual implementation of these technologies,mostly,there are multiple objectives with trade off relationships among each other,and also various constraints in the achievement of these ***,it should be essential to solve multiobjective optimization problems effectively in the applications of these new technologies in power *** paper proposes an improved method to realize multiobjective optimization for critical challenges in advanced power *** realize that,in an optimal dispersed generation installation problem,that is,one of effective measures for low-carbon power systems,various optimization methods and their combination methods are evaluated and a hybrid method for evolutionary algorithms was *** method can provide improved results compared with other state-of-the-art multi-objective optimization methods.

关键词： Dispersed generation Distribution system Evolutional strategy Multi-objective optimization Optimal power flow

Phylogenetic context of a deep-sea clam(Bivalvia:Vesicomyidae) revealed by DNA from 1 500-year-old shells

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Zoological Research 2023年第2期44卷 353-356页

作者： Yi-Xuan Li Yanjie Zhang Jack Chi-Ho Ip Jing Liu Chong Chen Crispin TSLittle Yusuke yokoyama Moriaki Yasuhara Jian-Wen Qiu Department of Biology Hong Kong Baptist UniversityHong Kong SARChina Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) GuangzhouGuangdong 511458China School of Life Sciences Hainan UniversityHaikouHainan 570228China Laboratory of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of SciencesQingdaoShandong 266071China X-STAR Japan Agency for Marine-Earth Science and Technology(JAMSTEC)2-15 Natsushima-choYokosukaKanagawa 237-0061Japan School of Earth and Environment University of LeedsLeeds LS29JTUK Life Sciences Department Natural History MuseumLondon SW75BDUK Department of Earth and Planetary Science University of TokyoHongo113-0033Japan School of Biological Sciences Area of Ecology and BiodiversitySwire Institute of Marine ScienceInstitute for Climate and Carbon Neutralityand Musketeers Foundation Institute of Data ScienceUniversity of Hong KongHong Kong SARChina State Key Laboratory of Marine Pollution City University of Hong KongHong Kong SARChina

DEAR EDITOR,Ancient DNA(a DNA) from mollusc shells is considered a potential archive of historical biodiversity and ***, such information is currently lacking for mollusc shells from the deep ocean, especially those from acidic chemosynthetic environments theoretically unsuitable for longterm DNA preservation. Here, we report on the recovery of mitochondrial and nuclear gene markers by Illumina sequencing of a DNA from three shells of Archivesica nanshaensis – a hydrocarbon-seep vesicomyid clam previously known only from a pair of empty shells collected at a depth of 2626 m in the South China Sea.

关键词： shells evolution acidic