Search Results - "YAMAMOTO, Yasuyuki"
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Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device
Published in Sensors (Basel, Switzerland) (05-02-2021)“…In this study, we propose a high-sensitivity sensorless viscometer based on a piezoelectric device. Viscosity is an essential parameter frequently used in many…”
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The Potential of Neuraminidase as an Antigen for Nasal Vaccines To Increase Cross-Protection against Influenza Viruses
Published in Journal of virology (27-09-2021)“…Despite the availability of vaccines that efficiently reduce the severity of clinical symptoms, influenza viruses still cause substantial morbidity and…”
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Ultra-Sensitive Minute Mass Sensing Using a Microcantilever Virtually Coupled with a Virtual Cantilever
Published in Sensors (Basel, Switzerland) (25-03-2020)“…Mass sensors based on the eigenmode shift of coupled cantilevers achieve much higher sensitivity than those based on the single cantilever's eigenfrequency…”
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Development of a New Apparatus for SI Traceable Small Mass Measurements Using the Voltage Balance Method at NMIJ
Published in IEEE transactions on instrumentation and measurement (01-11-2020)“…Toward establishing a measurement system for small masses and forces based on the new definition of the kilogram, a measurement apparatus that uses the voltage…”
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Measurement of added mass for an object oscillating in viscous fluids using nonlinear self-excited oscillations
Published in Nonlinear dynamics (01-12-2020)“…In this study, a method of measuring the added mass for an object oscillating in a viscous fluid using nonlinear self-excited oscillations was developed. The…”
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Verifying the Reliability of a Voltage Balance Apparatus to Measure Small Mass and Force Standards at NMIJ
Published in IEEE transactions on instrumentation and measurement (2021)“…For the accurate measurement of small masses and forces, a voltage balance that uses electrostatic force between electrodes has been developed at the National…”
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Light-Induced Condensation of Biofunctional Molecules around Targeted Living Cells to Accelerate Cytosolic Delivery
Published in Nano letters (28-12-2022)“…The light-induced force and convection can be enhanced by the collective effect of electrons (superradiance and red shift) in high-density metallic…”
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Self-excited coupled-microcantilevers for mass sensing
Published in Applied physics letters (01-06-2015)“…This paper reports ultrasensitive mass detection based on the relative change in the amplitude ratio of the first mode oscillation using self-excited coupled…”
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Damage-free light-induced assembly of intestinal bacteria with a bubble-mimetic substrate
Published in Communications biology (22-03-2021)“…Rapid evaluation of functions in densely assembled bacteria is a crucial issue in the efficient study of symbiotic mechanisms. If the interaction between many…”
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The TK0271 Protein Activates Transcription of Aromatic Amino Acid Biosynthesis Genes in the Hyperthermophilic Archaeon Thermococcus kodakarensis
Published in mBio (10-09-2019)“…TrpY from is a regulator that inhibits transcription of the Trp biosynthesis ( ) operon. Here, we show that the TrpY homolog in is not involved in such…”
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Surfactant-Controlled Photothermal Assembly of Nanoparticles and Microparticles for Rapid Concentration Measurement of Microbes
Published in ACS applied bio materials (15-04-2019)“…Light-induced heating on a solid–liquid interface can generate a vapor submillimeter bubble and fluid flow, which enables us to densely and rapidly assemble…”
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Development of a rapid bacterial counting method based on photothermal assembling
Published in Optical materials express (01-04-2016)“…We developed a rapid bacterial counting method based on the photothermal assembling (PTA). Based on the laser-induced PTA in fluid medium, an initial bacterial…”
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Development of bowl-shaped plasmonic substrate for optical assembly based on template of self-assembled microspheres
Published in Japanese Journal of Applied Physics (01-06-2019)“…Photothermal assembly (PTA) is a technique to assemble microscale and nanoscale dispersoids in a suspension. When a solid-liquid interface of a light-absorbing…”
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Measurement of Heat Dissipation and Thermal-Stability of Power Modules on DBC Substrates with Various Ceramics by SiC Micro-Heater Chip System and Ag Sinter Joining
Published in Micromachines (Basel) (31-10-2019)“…This study introduced the SiC micro-heater chip as a novel thermal evaluation device for next-generation power modules and to evaluate the heat resistant…”
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Engineering of the Hyperthermophilic Archaeon Thermococcus kodakarensis for Chitin-Dependent Hydrogen Production
Published in Applied and environmental microbiology (01-08-2017)“…is a hyperthermophilic archaeon that harbors a complete set of genes for chitin degradation to fructose 6-phosphate. However, wild-type KOD1 does not display…”
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Vaccine effect of recombinant single-chain hemagglutinin protein as an antigen
Published in Heliyon (01-06-2020)“…Vaccination is one of the most effective interventions for preventing the spread of influenza viruses at the population level. Currently most influenza…”
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Carbonate Apatite Nanoparticles Act as Potent Vaccine Adjuvant Delivery Vehicles by Enhancing Cytokine Production Induced by Encapsulated Cytosine-Phosphate-Guanine Oligodeoxynucleotides
Published in Frontiers in immunology (18-04-2018)“…Vaccine adjuvants that can induce not only antigen-specific antibody responses but also Th1-type immune responses and CD8 cytotoxic T lymphocyte responses are…”
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The Prevalence of High Antiretroviral Coverage and Viral Suppression in Japan: an Excellent Profile for a Downstream Human Immunodeficiency Virus Care Spectrum
Published in Japanese Journal of Infectious Diseases (2017)“…We investigated the effectiveness of the Japanese health care system for human immunodeficiency virus/acquired immunodeficiency virus (HIV/AIDS), in terms of…”
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Reliability Check of a Voltage Balance to Measure the Radiation Pressure for Small Mass and Force Standard at NMIJ
Published in 2020 Conference on Precision Electromagnetic Measurements (CPEM) (01-08-2020)“…The precision measurement of radiation pressure force, especially in a manner traceable to the International System of Units (SI) is of importance. For the…”
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Conference Proceeding -
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Radiation Pressure Measurement for Small Mass and Force Standard Using Voltage Balance Apparatus Developed at NMIJ
Published in 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) (01-07-2018)“…The radiation pressure force has been widely considered in a wide range of fields, such as microscopic optomechanics, plasmonics, astronautics, and metrology…”
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Conference Proceeding