Search results for: Y. Yamauchi

Items from 1 to 20 out of 212 results

article

Detection of FGFR2 : FAM76A Fusion Gene in Circulating Tumor RNA Based on Catalytic Signal Amplification of Graphene Oxide‐loaded Magnetic Nanoparticles

Lena Gorgannezhad, Muhammad Umer, Mostafa Kamal Masud, Md. Shahriar A. Hossain, more

Circulating tumor nucleic acids (ctNAs) are promising biomarkers for minimally invasive cancer assessment. The FGFR2 : FAM76A fusion gene is one of the highly promising ovarian cancer biomarkers detectable in ctNAs. Herein, we introduce a new amplification‐free electrochemical assay for the detection of FGFR2 : FAM76A fusion gene in ctNAs extracted from ovarian cancer patients. The assay relies on...

article

Synthesis of nanosized composite powders via a wet chemical process for sintering high performance W-Y₂O₃ alloy

Z. Dong, N. Liu, Z. Ma, C. Liu, more

International Journal of Refractory Metals and Hard Materials > 2017 > 69 > Complete > 266-272

With the aim of preparing high performance oxide dispersion strengthened tungsten-based alloys by powder metallurgy, the W-Y₂O₃ composite nanopowders were prepared by an improved bottom-up wet chemical method. Ultrasonic treatment and anionic surfactant sodium dodecyl sulfate (SDS) addition were innovatively introduced into this wet chemical method in order to fabricate homogeneous, ultrafine W-Y₂...

article

Effects of modified surfaces produced at plasma-facing surface on hydrogen release behavior in the LHD

Y. Nobuta, S. Masuzaki, M. Tokitani, N. Ashikawa, more

Nuclear Materials and Energy > 2017 > 12 > Complete > 483-487

In the present study, an additional deuterium (D) ion irradiation was performed against long-term samples mounted on the helical coil can and in the outer private region in the LHD during the 17th experimental campaign. Based on the release behavior of the D and hydrogen (H) retained during the experimental campaign, the difference of release behavior at the top surface and in bulk of modified surfaces...

article

Influence of electron correlation on the electronic and magnetic structures of nitric-oxide-adsorbed manganese phthalocyanine

Z.Y. Li, M. Jibran, X. Sun, A. Pratt, more

Chemical Physics Letters > 2017 > 675 > C > 15-19

We investigate the influence of electron correlation on NO-adsorbed manganese phthalocyanine (MnPc). A generalized gradient approximation (GGA) calculation determines that the magnetic moment of the central Mn atom is quenched by the adsorption of NO. In contrast, the GGA+U method (U>1.0eV) and three hybrid functionals predict a high spin polarization of the Mn atom. Further inconsistencies between...

article

Effect of impurity deposition layer formation on D retention in LHD plasma exposed W

Y. Oya, H. Fujita, C. Hu, Y. Uemura, more

Nuclear Materials and Energy > 2016 > 9 > Complete > 84-88

Effect of carbon based mixed-material deposition layer formation on hydrogen isotope retention was studied. The tungsten (W) samples were placed at four different positions, namely PI (sputtering erosion dominated area), DP (deposition dominated area), HL (higher heat load area), and ER (erosion dominated area) during 2013 plasma experimental campaign in Large Helical Device (LHD) at National Institute...

article

Pt- and Au-induced monodirectional nanowires on Ge(110)

T. Watanabe, Y. Yamada, M. Sasaki, S. Sakai, more

Surface Science > 2016 > 653 > C > 71-75

The adsorption of Pt or Au on Ge(110) and subsequent annealing resulted in formation of well-ordered monodirectional nanowires (NWs) throughout the surface over a cm-scale. The NWs were aligned along the [11¯0] direction, independent of the surface reconstruction of Ge(110). Metastable-atom deexcitation spectroscopy of Pt-NWs revealed that the topmost part of the NWs comprised Ge atoms, suggesting...

article

Development of n+-in-p planar pixel sensors for extremely high radiation environments, designed to retain high efficiency after irradiation

Y. Unno, S. Kamada, K. Yamamura, Y. Ikegami, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2016 > 831 > C > 122-132

We have developed n⁺-in-p pixel sensors to obtain highly radiation tolerant sensors for extremely high radiation environments such as those found at the high-luminosity LHC. We have designed novel pixel structures to eliminate the sources of efficiency loss under the bias rails after irradiation by removing the bias rail out of the boundary region and routing the bias resistors inside the area of...

article

Helium irradiation effects on tritium retention and long-term tritium release properties in polycrystalline tungsten

Y. Nobuta, Y. Hatano, M. Matsuyama, S. Abe, more

Journal of Nuclear Materials > 2015 > 463 > C > 993-996

DT⁺ ion irradiation with energy of 0.5 and 1.0keV was performed on helium pre-irradiated tungsten and the amount of retained tritium and the long-term release of retained tritium in vacuum was investigated using an IP technique and BIXS. Tritium retention and long-term tritium release were significantly influenced by helium pre-irradiation. The amount of retained tritium increased until it reached...

article

Deuterium retention on He-irradiated F82H with surface impurity layer

N. Shinoda, Y. Yamauchi, Y. Nobuta

Journal of Nuclear Materials > 2015 > 463 > C > 1001-1004

The deuterium retention/desorption behavior of F82H has been studied to clarify the effect of radiation damage with respect to the impurity layer. To evaluate the effects of oxygen impurities, non-oxidized and thermally oxidized samples were prepared with the introduction of radiation damage through He⁺ irradiation. The amount of deuterium retained in the thermally oxidized samples was less than that...

article

Predictors of Delayed Wound Healing after Endovascular Therapy of Isolated Infrapopliteal Lesions Underlying Critical Limb Ischemia in Patients with High Prevalence of Diabetes Mellitus and Hemodialysis

T. Shiraki, O. Iida, M. Takahara, Y. Soga, more

Journal of Vascular Surgery > 2015 > 61 > 5 > 1378

article

Predictors of Delayed Wound Healing after Endovascular Therapy of Isolated Infrapopliteal Lesions Underlying Critical Limb Ischemia in Patients with High Prevalence of Diabetes Mellitus and Hemodialysis

T. Shiraki, O. Iida, M. Takahara, Y. Soga, more

European Journal of Vascular & Endovascular Surgery > 2015 > 49 > 5 > 565-573

Acceptable limb salvage rates underlie the widespread use of endovascular therapy (EVT) for patients with critical limb ischemia (CLI) secondary to isolated infrapopliteal lesions; however, post-EVT delayed wound healing remains a challenge. Predictors of delayed wound healing and their use in risk stratification of EVT in patients with CLI due to isolated infrapopliteal lesions are explored.This...

article

Increasing testicular temperature by exposure to elevated ambient temperatures restores spermatogenesis in adult Utp14b ^jsd mutant (jsd) mice

P. B. Comish, L. Y. Liang, Y. Yamauchi, C. C. Weng, more

Andrology > 3 > 2 > 376 - 384

Because mutations in the human UTP14C gene are associated with male infertility, we sought to develop a method for fertility restoration in azoospermic mice with a mutation in the orthologous Utp14b^jsd (jsd) gene that have spermatogonial arrest. The method is based on our observation that elevation of testicular temperatures restores spermatogonial differentiation in jsd mutant mice. To non‐surgically...

article

Factors that predict in‐hospital mortality in eosinophilic granulomatosis with polyangiitis

W. Hasegawa, Y. Yamauchi, H. Yasunaga, M. Sunohara, more

Allergy > 70 > 5 > 585 - 590

Background Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare systemic small‐vessel vasculitis associated with asthma, eosinophilia, and necrotizing vasculitis. EGPA is potentially life‐threatening and often involves peripheral neuropathies, peptic ulcers, cerebral vessel disease, and cardiovascular disease. However, there is limited understanding of the prognostics factors for patients...

article

Complex Relationship of Body Mass Index with Mortality in Patients with Critical Limb Ischemia Undergoing Endovascular Treatment

N. Murata, Y. Soga, O. Iida, Y. Yamauchi, more

Journal of Vascular Surgery > 2015 > 61 > 3 > 838

article

Complex Relationship of Body Mass Index with Mortality in Patients with Critical Limb Ischemia Undergoing Endovascular Treatment

N. Murata, Y. Soga, O. Iida, Y. Yamauchi, more

European Journal of Vascular & Endovascular Surgery > 2015 > 49 > 3 > 297-305

To investigate the relationship between body mass index (BMI) and long-term outcomes of patients with CLI after endovascular treatment (EVT).Retrospective multicenter study.1088 consecutive patients (1306 limbs, mean age 72 ± 10 years) with CLI who underwent EVT for isolated infrapopliteal artery lesions were evaluated. These subjects were identified in the J-BEAT III registry.The patients were divided...

article

Fractures of the pubic rami and sacrum identified after delivery

T. Yamaguchi, Y. Yamauchi, J. Yamaguchi, K. Hara

International Journal of Obstetric Anesthesia > 2015 > 24 > 1 > 91-93

article

Selective functionalization of silicon surface controlled by metastable helium atom beam for patterning chemisorbed monolayer molecular assemblies

Z. P. Wang, J. W. Zhang, Z. M. Zhang, Z. J. Ding, more

Surface and Interface Analysis > 46 > 12-13 > 1196 - 1199

Metastable neutral helium atoms are highly chemical sensitive to surface dangling bonds. As the basis of a new lithographic technique, a method for fabrication of self‐assembled monolayers (SAMs) and mixed SAMs by the irradiation‐promoted exchange reaction has been recently developed. Metastable helium atoms irradiation is shown to modify organosilane SAM films and Si–H and Si–OH covering surfaces,...

article

Comparison of hydrogen isotope retention for tungsten probes in LHD vacuum vessel during the experimental campaigns in 2011 and 2012

Y. Oya, S. Masuzaki, M. Tokitani, M. Sato, more

Fusion Engineering and Design > 2014 > 89 > 7-8 > 1091-1095

To evaluate hydrogen isotope retention enhancement in W by plasma exposure, the stress relieved tungsten samples were placed at three or four different positions, namely PI (sputtering erosion dominated area), DP (deposition dominated area), HL (Higher heat load area) and ER (erosion dominated area) during 2011 (15th) or 2012 (16th) plasma experiment campaign in Large Helical Device (LHD) at National...

article

Tritium retention properties of tungsten, graphite and co-deposited carbon film

Y. Nobuta, Y. Hatano, M. Matsuyama, S. Abe, more

Fusion Engineering and Design > 2014 > 89 > 7-8 > 1516-1519

DT ⁺ ion irradiation was performed on polycrystalline tungsten, graphite and carbon film and both the amount of retained tritium and the reduction of retained tritium after preservation in vacuum were investigated using an IP technique and BIXS. In addition, the relationship between the retention properties of tritium and the microstructure of graphite and carbon film were studied with Raman...

article

Effect of induced damage on hydrogen isotope retention of F82H with impurity layer

N. Shinoda, Y. Yamauchi, Y. Nobuta, T. Hino

Fusion Engineering and Design > 2014 > 89 > 7-8 > 921-924

The effects of induced damage on hydrogen isotope retention in F82H with or without thermal oxidation were investigated using thermal desorption spectroscopy. To induce damage and modify the surface, glow discharge pre-irradiated Ar ⁺ ions was examined. In non-oxidized samples, the amount of desorbed deuterium increased with Ar ⁺ ion fluence. Oxygen depletion in the surface layer of...

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LHD (7)
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INFONA - science communication portal

Search results for: Y. Yamauchi

Detection of FGFR2 : FAM76A Fusion Gene in Circulating Tumor RNA Based on Catalytic Signal Amplification of Graphene Oxide‐loaded Magnetic Nanoparticles

Synthesis of nanosized composite powders via a wet chemical process for sintering high performance W-Y₂O₃ alloy

Effects of modified surfaces produced at plasma-facing surface on hydrogen release behavior in the LHD

Influence of electron correlation on the electronic and magnetic structures of nitric-oxide-adsorbed manganese phthalocyanine

Effect of impurity deposition layer formation on D retention in LHD plasma exposed W

Pt- and Au-induced monodirectional nanowires on Ge(110)

Development of n+-in-p planar pixel sensors for extremely high radiation environments, designed to retain high efficiency after irradiation

Helium irradiation effects on tritium retention and long-term tritium release properties in polycrystalline tungsten

Deuterium retention on He-irradiated F82H with surface impurity layer

Predictors of Delayed Wound Healing after Endovascular Therapy of Isolated Infrapopliteal Lesions Underlying Critical Limb Ischemia in Patients with High Prevalence of Diabetes Mellitus and Hemodialysis

Predictors of Delayed Wound Healing after Endovascular Therapy of Isolated Infrapopliteal Lesions Underlying Critical Limb Ischemia in Patients with High Prevalence of Diabetes Mellitus and Hemodialysis

Increasing testicular temperature by exposure to elevated ambient temperatures restores spermatogenesis in adult Utp14b ^jsd mutant (jsd) mice

Factors that predict in‐hospital mortality in eosinophilic granulomatosis with polyangiitis

Complex Relationship of Body Mass Index with Mortality in Patients with Critical Limb Ischemia Undergoing Endovascular Treatment

Complex Relationship of Body Mass Index with Mortality in Patients with Critical Limb Ischemia Undergoing Endovascular Treatment

Fractures of the pubic rami and sacrum identified after delivery

Selective functionalization of silicon surface controlled by metastable helium atom beam for patterning chemisorbed monolayer molecular assemblies

Comparison of hydrogen isotope retention for tungsten probes in LHD vacuum vessel during the experimental campaigns in 2011 and 2012

Tritium retention properties of tungsten, graphite and co-deposited carbon film

Effect of induced damage on hydrogen isotope retention of F82H with impurity layer

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