|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Performance Test and Flow Measurement of Contra-Rotating Axial Flow Pump显示文摘contra-rotating 转子的一个应用程序对对开发更高特定的速度的一个要求被建议了轴的流动泵。在现在的纸,使用 contra-rotating 转子的优点和劣势与转子定子的常规类型比较被描述,基于理论、试验性的调查。优点如下:(1 ) 泵内在地作为更小被设计缩放并且以更低的旋转速度。(2 ) 为有否定斜坡的流动率的一条稳定的头特征曲线出现。(3 ) 作为后面的转子,旋转速度作为前面转子的独立控制被改变,高效操作的更宽的范围被后面的转子速度控制除了前面转子速度控制获得。劣势如下:(1 ) 两倍柄系统的结构变得复杂。(2 ) 泵表演是劣等的在在是的流动率上,装载的后面的转子被削弱。(3 ) 片更强烈从后面的转子划相互作用到前面转子出现。当时,后面的转子设计是一把钥匙完成更高的泵性能。克服这些劣势的一些方法将向 contra-rotating 的更宽的用法更详细地被讨论各种各样的工业地里的轴的流动泵。 | Akinori Furukawa Toru Shigemitsu Satoshi Watanabe | 2007 | Journal of Thermal Science2007，16，1： | 18 |
| 2 | Unsteady Internal Flow Conditions of Mini-Centrifugal Pump with Splitter Blades显示文摘Mini centrifugal pumps having a diameter smaller than 100mm are employed in many fields. But the design method for the mini centrifugal pump is not established because the internal flow condition for these small-sized fluid machines is not clarified and conventional theory is not suitable for small-sized pumps. Therefore, mini centrifugal pumps with simple structure were investigated by this research. Splitter blades were adopted in this research to improve the performance and the internal flow condition of mini centrifugal pump which had large blade outlet angle. The original impeller without the splitter blades and the impeller with the splitter blades were prepared for experiment. The performance tests are conducted with these rotors in order to investigate the effect of the splitter blades on performance and internal flow condition of mini centrifugal pump. On the other hand, a three dimensional unsteady numerical flow analysis was conducted to investigate the change of the internal flow according to the rotor rotation. It is clarified from the experimental results that the performance of the mini centrifugal pump is improved by the splitter blades. The blade-to-blade low velocity region was suppressed in the case with the splitter blades. In addition to that, the unsteady flows near the volute casing tongue were suppressed due to the splitter blades. In the present paper, the performance of the mini centrifugal pump is shown and the unsteady flow condition is clarified with the results of the numerical flow analysis. Furthermore, the effects of the splitter blades on the performance and the unsteady internal flow condition are investigated. | T. Shigemitsu J. Fukutomi K. Kaji T. Wada | 2013 | Journal of Thermal Science2013，22，1： | 18 |
| 3 | Performance Analysis of Mini Centrifugal Pump with Splitter Blades显示文摘Design method for a mini centrifugal pump is not established because the internal flow condition for these small-sized fluid machines is not clarified and conventional theory is not suitable for small-sized pumps. Then, a semi-open impeller for the mini centrifugal pump with 55mm impeller diameter is adopted in this research to take simplicity and maintenance into consideration. Splitter blades are adopted in this research to improve the performance and internal flow condition of mini centrifugal pump having large blade outlet angle. The performance tests are conducted with these rotors in order to investigate the effect of the splitter blades on the performance and internal flow condition of the mini centrifugal pump. A three dimensional steady numerical flow analysis is conducted to analyze rotor, volute efficiency and loss caused by a vortex. It is clarified from the experimental results that the performance of the mini centrifugal pump is improved by the effect of the splitter blades. Flow condition at outlet of the rotor becomes uniform and back flow regions are suppressed in the case with the splitter blades.Further, the volute efficiency increases and the vortex loss decreases. In the present paper, the performance of the mini centrifugal pump is shown and the flow condition is clarified with the results of the experiment and the numerical flow analysis. Furthermore, the performance analyses of the mini centrifugal pumps with and without the splitter blades are conducted. | T. Shigemitsu J. Fukutomi T. Wada H. Shinohara | 2013 | Journal of Thermal Science2013，22，6： | 13 |
| 4 | What types of early gastric cancer are indicated for endoscopic ultrasonography staging of invasion depth?显示文摘AIM To clarify the diagnostic efficacy and limitations of endoscopic ultrasonography(EUS) and the characteristics of early gastric cancers(EGCs) that are indications for EUS-based assessment of cancer invasion depth.METHODS We retrospectively investigated the cases of 153 EGC patients who underwent conventional endoscopy(CE) and EUS(20 MHz) before treatment.RESULTS We found that 13.7% were 'inconclusive' cases with low-quality EUS images, including all nine of the cases with protruded(0-I)-type EGCs. There was no significant difference in the diagnostic accuracybetween CE and EUS. Two significant independent risk factors for misdiagnosis by EUS were identified-ulcer scarring [UL(+); odds ratio(OR) = 4.49, P = 0.003] and non-indication criteria for endoscopic resection(ER)(OR = 3.02, P = 0.03). In the subgroup analysis, 23.1% of the differentiated-type cancers exhibiting SM massive invasion(SM2) invasion(submucosal invasion ≥ 500 μm) by CE were correctly diagnosed by EUS, and 23.1% of the undifferentiated-type EGCs meeting the expanded-indication criteria for ER were correctly diagnosed by EUS.CONCLUSION There is no need to perform EUS for UL(+) EGCs or 0-I-type EGCs, but EUS may enhance the pretreatment staging of differentiated-type EGCs with SM2 invasion without UL or undifferentiated-type EGCs revealed by CE as meeting the expanded-indication criteria for ER. | Jiro Watari Shigemitsu Ueyama Toshihiko Tomita Hisatomo Ikehara Kazutoshi Hori Ken Hara Takahisa Yamasaki Takuya Okugawa Takashi Kondo Tomoaki Kono Katsuyuki Tozawa Tadayuki Oshima Hirokazu Fukui Hiroto Miwa | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，16： | 8 |
| 5 | Prevalence of gastroesophageal reflux symptoms in a large unselected general population in Japan显示文摘AIM:To examine the prevalence of gastroesophageal reflux disease (GERD) symptoms in a large unselected general population in Japan. METHODS: In Japan, mature adults are offered regular check-ups for the prevention of gastric cancer. A notice was sent by mail to all inhabitants aged > 40 years. A total of 160 983 Japanese (60 774 male, 100 209 female; mean age 61.9 years) who underwent a stomach check up were enrolled in this study. In addition, from these 160 983 subjects, we randomly selected a total of 82 894 (34 275 male, 48 619 female; mean age 62.4 years) to evaluate the prevalence of abdominal pain. The respective subjects were prospectively asked to complete questionnaires concerning the symptoms of heartburn, dysphagia, and abdominal pain for a 1 mo period. RESULTS: The respective prevalences of the symptoms in males and females were: heartburn, 15.8% vs 20.7%; dysphagia, 5.4% vs 7.8%; and abdominal pain, 6.6% vs 9.6%. Among these symptoms, heartburn was significantly high compared with the other symptoms, and the prevalence of heartburn was significantly more frequent in females than in males in the 60-89-year agegroup. Dysphagia was also significantly more frequent in female patients. CONCLUSION: The prevalence of typical GERD symptoms (heartburn) was high, at about 20% of the Japan population, and the frequency was especially high in females in the 60-89 year age group. | Hatsushi Yamagishi Tomoyuki Koike Shuichi Ohara Shigeyuki Kobayashi Ken Ariizumi Yasuhiko Abe Katsunori Iijima Akira Imatani Yoshifumi Inomata Katsuaki Kato Daisuke Shibuya Shigemitsu Aida Tooru Shimosegawa | 2008 | World Journal of Gastroenterology2008，14，9： | 2 |
| 6 | Pressure Measurement on Casing Wall and Blade Rows Interaction of Contra-Rotating Axial Flow Pump显示文摘An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump. | Toru SHIGEMITSU Tomoya TAKANO Akinori FURUKAWA Kusuo OKUMA Satoshi WATANABE | 2005 | Journal of Thermal Science2005，14，2： | 2 |
| 7 | Electromagnetic Wave Radiated from an Insulating Spacer in Gas Insulated Switchgear with Partial Discharge Detection 显示文摘 | Shuhei K Shigemitsu O | 2009 | IEEE Trans on Dielectrics and Electrical Insulation2009，16，1： | 1 |
| 8 | Comparison of bare metal stent with pioglitazone versus sirolimus-eluting stent for pereutaneous coronary intervention in patients with Type 2 diabe- tes mellitus 显示文摘 | Nishio K Shigemitsu M Kodama Y | 2009 | Cardiovasc Revase Med2009，10，1： | 1 |
| 9 | Histopathological find-ings of capsular opacification and retraction after intraocularlens implantation显示文摘 | Shigemitsu T Majima Y Ishiguro K | 1991 | Jpn J Clin Ophthalmol1991，46，6： | 1 |
| 10 | A middle-aged man with cough, chest pain, and pulmonary artery filling defect: primary pulmonary artery sarcoma 显示文摘 | Shigemitsu H Orjioke N Shriki JE | 2014 | Chest2014，145，2： | 1 |
| 11 | Arginine and leucine regulate p70 S6 kinase and 4E BP1 in intestinal epithelial cells显示文摘 | Ban H Shigemitsu K Yamatsuji T | 2004 | International journal of molecular medicine2004，13，： | 1 |
| 12 | Cellular origins of fibroblasts:possible implications for organ fibrosis in systemic sclerosis显示文摘 | Postlethwaite AE Shigemitsu H Kanangat S | | 0，，06： | 1 |
| 13 | High temporal resolution dynamic contrast MRI in a high risk group for placenta accreta 显示文摘 | Tanaka Y O Sohda S Shigemitsu S | 2001 | Magn Reson Imaging2001，19，5： | 1 |
| 14 | Aspiration pneumonias: under - diagnosed and under - treated 显示文摘 | Shigemitsu H Afshar K | 2007 | Curr Opin Pulm Med2007，13，3： | 1 |
| 15 | Antibacterial Meeha nisms of Flomoxef Against Gram-negative Bacilli显示文摘 | SEDA I SHIGEMITSU Dent | 1993 | Hi- roshima Daigaku Shigaku Zasshi1993，25，1： | 1 |
| 16 | Immunohistochemical studies on factors involved in after cataract显示文摘 | Shigemitsu T Majima Y Shimizu Y | 1998 | Nippon Ganka Gakkai Zasshi1998，102，8： | 1 |
| 17 | Improving the Sensitivity Verification Method of the UHF PD Detection Technique for GIS显示文摘 | Takashi Ito Mitsuhito Kamei Genyo Ueta and Shigemitsu Okabe | 2011 | IEEE Transactions on Dielectrics and Electrical Insulation2011，18，6： | 1 |
| 18 | A Phase II Study of S-1 in patients with metastatic breast cancer-A Japanese Trial by the S-1 Cooperative Study Group,Breast Cancer Working Group显示文摘 | Toshiaki S Shigemitsu T Muneaki S | 2004 | Breast Cancer2004，11，2： | 1 |
| 19 | Salmonellapericarditis in a patient with primary idiopathic chylopericardium显示文摘 | Yoshioka H Shigemitsu K Takeuchi M | 2003 | Jpn J Thorac Cardiovasc Surg2003，51，1： | 1 |
| 20 | Innervation of the triangular fibrocartilage complex of the human wrist: quantitative immunohistochemical study 显示文摘 | Shigemitsu T Tobe N Mizutani K | 2007 | Anatomical Science2007，82，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员