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| 1 | Microstructure and performance of biodegradable magnesium alloy tubes fabricated by local-heating-assisted dieless drawing显示文摘Magnesium(Mg)alloy stents are expected to be the next generation of stents because of good biocompatibility and biodegradability.Compared with cold drawing,dieless drawing with local heating is an effective method for manufacturing the Mg alloy microtubes since a large reduction in area can be achieved in a single pass.However,the microstructure and properties of dieless drawn tubes have not been clarified,leading to the problems in practical application of dieless drawn tubes.In this study,the microstructure and performance of dieless drawn tubes are clarified.The results show that temperature and speed in the dieless drawing process are two factors in determining the grain size of dieless drawn tubes since decreasing the temperature or increasing the speed promotes the generation of fine-grained microstructure.Twins are also generated during the dieless drawing process,which 1)disintegrates grains leading to refinement and 2)causes Hall-Petch law effect on dieless drawn tubes.Tensile tests show that grain size is the main factor in determining the mechanical properties of dieless drawn tubes,namely,0.2%proof stress 135-180MPa,ultimate tensile strength(UTS)200-250MPa,and elongation 8-12%.In 0.9 wt%NaCl solution,localized corrosion is the key factor in initiating the corrosion of dieless drawn tubes,but refined grains and fewer twins can alleviate local corrosion.These results imply that dieless drawn tubes are promising in the clinical application of Mg alloy stents for cardiovascular disease. | Peihua Du Shusaku Furusawa Tsuyoshi Furushima | 2020 | Journal of Magnesium and Alloys2020，8，3： | 2 |
| 2 | Evaluation of high-temperature tensile behavior for metal foils by a novel resistance heating assisted tensile testing system using samples with optimized structures显示文摘To evaluate the tensile behavior of metal foils by resistance heating(RH)assisted tensile testing system accurately,this study proposed to embed a digital image correlation(DIC)system with laser speckles for the measurement of full-field strain distribution.Furthermore,the sample structures were optimized to achieve uniform temperature and strain distribution.An infrared camera was used to monitor the temperature distribution.Rectangular samples instead of dog-bone shaped samples were proposed.A model for calculating the temperature distribution was established to optimize the sample structure.The parameters that influence the temperature distribution and tensile behavior were studied.As results,compared to the strain measured by a non-contact extensometer,the maximum deviation of the strain measured by DIC was less than 6%when the nominal strain was larger than 0.013.It is confirmed that the proposed tensile testing system is reliable for measuring the temperature and full-field strain distributions.Sample shape influenced temperature distributions of smaller samples while it almost had no influence on the temperature distributions of larger samples.The temperature difference was not affected by the material type but by the sample size.The proposed rectangular shape was validated to be feasible for RH assisted tensile testing.The sample length was successfully optimized for a more uniform temperature distribution by the established model.Although the tensile deformation was not influenced by the sample shape,the temperature distribution resulted in a non-uniform strain distribution before achieving ultimate tensile strength.Longer effective sample length between two clamping jigs contributed to a more uniform temperature distribution and material deformation.A more accurate evaluation of high-temperature tensile behavior for metal foils can be achieved by the proposed RH assisted tensile testing system using rectangular samples with an optimized structure. | Qiu Zheng Tsuyoshi Furushima | 2021 | Journal of Materials Science & Technology2021，，35： | 2 |
| 3 | Association between polymorphism of the transforming growth factor - betal gene with the radiolog:c characteristic and ossification of the posteri- or longitudinal ligament显示文摘 | Kawaguchi Y Furushima K Sugimori K | 2003 | Spine2003，28，13： | 1 |
| 4 | Role of alpha1-blockade in congenital long QT syndrome:investigation by exercise stress test显示文摘 | Furushima H Chinushi M Washizuka T | 2001 | Jpn Circ J2001，65，7： | 1 |
| 5 | Interstitial lung diseaseduring chemotherapy combined with oxaliplatin and/or bevacizum-ah in advanced colorectal cancer patients显示文摘 | Usui K Katou Y Furushima K | 2011 | Jpn J Clin Oncol2011，41，4： | 1 |
| 6 | Experimental and numerical study on deformation behavior in dieless drawing process of superplastic microtubes显示文摘 | T. Furushima K. Manabe | 2007 | Journal of Materials Processing Tech2007，，1： | 1 |
| 7 | Endocardial arrhythmogenic mechanisms of torsades de pointes in patients with the congenital long QT syndrome显示文摘 | Chinushi M Furushima H Hosaka Y | 2011 | Intern Med2011，50，16： | 1 |
| 8 | Association be- tween potymorphism of the transforming grow h factor- bl gene with the radiotogic aracteristic and ossification of the posterior lon- gitudinal ligament显示文摘 | Kawaguchi Y Furushima K Sugimori K | 2003 | Spine2003，28，： | 1 |
| 9 | Significance and usefulness of heart rate variability in patients with multiple system atrophy显示文摘 | Furushima H Shimohata T Nakayama H | 2012 | Mov Disord2012，27，： | 1 |
| 10 | Dynamicity of the J-Wave in Idiopathic Ventricular Fibrillation With a Special Reference to Pause-Dependent Augmentation of the J-Wave显示文摘 | Yoshifusa Aizawa Akinori Sato Hiroshi Watanabe Masaomi Chinushi Hiroshi Furushima Minoru Horie Yoshiaki Kaneko Tsutomu Imaizumi Kimie Okubo Ichiro Watanabe Tsuyoshi Shinozaki Yoshiyasu Aizawa Keiichi Fukuda Kunitake Joo Michel Haissaguerre | 2012 | Journal of the American College of Cardiology2012，，22： | 1 |
| 11 | The usefulness of Holter monitoring in selecting pharmacologic therapy for patients with sustained monomorphic ventricular tachycardia: studies in patients in whom no effective pharmacologic therapy could be determined by electrophysiologic study 显示文摘 | Niwano S Furushima H Taneda K | 1998 | Jpn Circ J1998，62，： | 1 |
| 12 | 显示文摘 | Jia A Furushima T Kobayashi M | 2000 | J Crystal Growth2000，，： | 1 |
| 13 | Effects of lanthanide ions on the binding ability of annexin V to phospholipid vesicle显示文摘 | Funakoshi T Furushima K Mizokami H | 1996 | Biochem Mol Biol Int1996，38，5： | 1 |
| 14 | Genomewide linkage and linkage disequilibrium analyses identify COL6A1, on chromosome 21, as the locus for ossification of the posterior longitudinal ligament of the spine显示文摘 | Tanaka T Ikari K Furushima K | 2003 | Am J Hum Genet2003，73，4： | 1 |
| 15 | Association between polymorphism of the transforming growth factor-beta1 gene with the radiologic characteristic and ossification of the posterior longitudinal ligament显示文摘 | Kawaguchi Y Furushima K Sugimori K Inoue I Kimura T | 2003 | Spine (Phila Pa 1976)2003，28，： | 1 |
| 16 | Evaluation of coral bleaching condition in situ using an underwater pulse amplitude modulated fluorometer显示文摘 | OKAMOTO M NOJINA S FURUSHIMA Y | 2005 | Fish Sci2005，71，： | 1 |
| 17 | Experimental and numerical study on deformation behavior in dieless drawing process of superplastic microtubes显示文摘 | FURUSHIMA T MANABE K | 2007 | Journal of Materials Processing Technology2007，191，： | 1 |
| 18 | Effect of dl-sotalol on mortality and recurrence of ventricular tachyarrhythmias: ischemic compared to nonischemic cardiomyopathy显示文摘 | Furushima H Chinushi M Okamura KPacing Clin | 2007 | Electrophysiol2007，30，9： | 1 |
| 19 | Association between potymorphism of the transforming growth factor - b1 gene with the radiotogic characteristic and ossification of the posterior longitudinat ligament显示文摘 | Kawaguchi Y Furushima K Sugimori K | 2003 | Spine2003，28，： | 1 |
| 20 | Genomewide linkage and rinkage disequitibfium anatyses identify COL6A1, on chromosome 21, as the locus for ossification of the posterior longitudinal ligament of the spine显示文摘 | Tanaka T Ikari K Furushima K | 2003 | Am J Hum Genet2003，73，： | 1 |
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