Tsuyoshi Ito

ORCID: 0000-0001-6193-2408
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Primate Behavior and Ecology
  • Morphological variations and asymmetry
  • Photonic and Optical Devices
  • Optical Network Technologies
  • Semiconductor Lasers and Optical Devices
  • Evolution and Paleontology Studies
  • Advanced Photonic Communication Systems
  • Nuclear Materials and Properties
  • Wildlife Ecology and Conservation
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Graphite, nuclear technology, radiation studies
  • Nuclear reactor physics and engineering
  • Semiconductor Quantum Structures and Devices
  • Pleistocene-Era Hominins and Archaeology
  • Groundwater flow and contamination studies
  • Corrosion Behavior and Inhibition
  • Genetic diversity and population structure
  • Cardiomyopathy and Myosin Studies
  • Cellular Mechanics and Interactions
  • Fusion materials and technologies
  • Cardiac Imaging and Diagnostics
  • Amphibian and Reptile Biology
  • Neonatal Respiratory Health Research
  • Marine animal studies overview
  • Acute Myocardial Infarction Research

Nagoya City University
2003-2025

Mizuho (Japan)
2003-2024

Kyoto University
2010-2023

Japan Atomic Energy Agency
2018-2023

Museum of Kyoto
2023

Tohoku University
1997-2022

Tokyo City University
2021

Hitachi (Japan)
2010-2020

NTT (Japan)
1995-2020

Japan Automobile Research Institute
2016-2018

We demonstrate 50-Gb/s direct modulation by using 1.3-μm distributed-feedback lasers with a ridge waveguide structure. employed InGaAlAs material for multiple-quantum well to obtain low damping factor <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">K</i> , and fabricated structure buried in benzocyclobutene realize parasitic capacitance. In addition, high maximum frequency relaxation oscillations fr, we designed the cavity length...

10.1109/jstqe.2013.2238509 article EN IEEE Journal of Selected Topics in Quantum Electronics 2013-01-09

Abstract In designing a planetary rover, it is important to consider and evaluate the influence of parameters such as weight dimensions rover on its traveling performance. this study, rover's performance was evaluated by conduct experiments using monotrack an inline four‐wheeled with different weights. Then wheel diameter width quantitatively determined performing two‐wheeled equipped wheels, diameters widths. The results were compared those numerical simulation based terramechanics....

10.1002/rob.21405 article EN Journal of Field Robotics 2012-01-05

The morphology and interfacial energetics of vapor-deposited Cu on slightly reduced CeO2(111) surfaces at 300 K have been studied using single crystal adsorption calorimetry (SCAC), He+ low-energy ion scattering spectroscopy (ISS), X-ray photoelectron (XPS), low energy electron diffraction (LEED). Copper grows as three-dimensional nanoparticles with a density ∼1013 particles/cm2 CeO2–x(111) (x = 0.05, 0.1, 0.2). initial heat decreased the extent reduction, showing that stoichiometric ceria...

10.1021/acs.jpcc.5b04621 article EN The Journal of Physical Chemistry C 2015-06-30

The homeobox transcription factor CSX/NKX2.5, which is a vertebrate homologue of the Drosophila gene tinman, essential for cardiac development. It expressed in early mesoderm and heart muscle lineage throughout life. Homozygous deletion CSX/NKX2.5 causes embryonic lethality mice because development arrested at linear tube stage. Heterozygous mutation human has been associated with various congenital diseases such as atrial septal defect (ASD), ventricular defect, tetralogy Fallot, tricuspid...

10.1253/circj.66.561 article EN Circulation Journal 2002-01-01

The 32-channel SQUID system described here is used for diagnosing heart disease by measuring the x and y components of cardiac magnetic field. To detect a field parallel to body surface, it uses compact hybrid superconducting quantum interference device (SQUID) gradiometer consisting planar pickup coil (fabricated using thin-film techniques) square double-washer dc-SQUID having large voltage-flux transfer function. SQUIDs are operated in flux-locked mode simple readout circuits connected...

10.1063/1.1146524 article EN Review of Scientific Instruments 1995-10-01

There has been a long-standing debate regarding the diversification of paranasal sinuses, namely pneumatized spaces in face. Functional adaptation and structural constraints have generally suggested to explain sinus vertebrates. Here we investigated variation maxillary external facial cranium hybrid Taiwanese–Japanese macaques estimate genetic basis phenotypic differences. The Taiwanese large sinus, whereas Japanese small sinus; they are also significantly different their craniofacial...

10.1111/bij.12528 article EN Biological Journal of the Linnean Society 2015-04-24

ABSTRACT The widespread and complex ecogeographical diversity of macaques may have caused adaptive morphological convergence among four phylogenetic subgroups, making their relationships unclear. We used geometric morphometrics multivariate analyses to test the null hypothesis that craniofacial morphology does not vary with factors. As predicted by Bergmann's rule, size was larger for fascicularis sinica groups in colder environments. No clear cline observed silenus sylvanus groups. An...

10.1002/ajpa.22469 article EN American Journal of Physical Anthropology 2014-01-22

Abstract Aim Understanding patterns and processes of geographic genetic variation within among closely related species is the essence phylogeography. Japanese macaques, also called snow monkeys, have been extensively studied, particularly in fields sociobiology, ecology experimental biology; however, our knowledge their evolutionary history relatively limited. In this study we aimed to elucidate macaques that underlie them. Location Japan. Taxa macaque, Macaca fuscata ; rhesus M. mulatta...

10.1111/jbi.14087 article EN Journal of Biogeography 2021-04-15

We have developed a traveling-wave Mach-Zehnder modulator using an n-i-n heterostructure fabricated on InP substrate. obtained extremely small /spl pi/ voltage (V/spl pi/) of 2.2 V, even for short signal-electrode length 3 mm. confirmed that the device has impedance-matched electrode and operates at 40 Gb/s with single-ended drive 2.3 V.

10.1109/lpt.2004.836900 article EN IEEE Photonics Technology Letters 2004-12-28

Objectives Geographic variation in human nasal form has often been interpreted as a climatic adaptation, owing to the air‐conditioning function. The aim of this study was further address morphofunctional issues cavity, using three groups from subarctic, temperate, and subtropical regions Japanese Archipelago: prehistoric Okhotsk, early‐modern Honshu Okinawa groups. Methods Using three‐dimensional coordinates craniometric landmarks surrounding we compared linear measurements regarding cavity...

10.1002/ajhb.22786 article EN American Journal of Human Biology 2015-09-08

Understanding the process and consequences of hybridization is one major challenges in evolutionary biology. A growing body literature has reported evidence ancient events or natural hybrid zones primates, including humans; however, we still have relatively limited knowledge about pattern history admixture because there been little studies that simultaneously achieved genome-scale analysis a geographically wide sampling wild populations. Our study applied double-digest restriction...

10.1111/jeb.13681 article EN Journal of Evolutionary Biology 2020-07-17

Despite the accumulating evidence suggesting importance of phenotypic plasticity in diversification and adaptation, little is known about plastic variation primate skulls. The present study evaluated mandible Japanese macaques by comparing wild captive specimens. results showed that individuals are square-jawed with relatively longer tooth rows than individuals. We also found this shape change resembles sexual dimorphism, indicating mandibles to some extent masculinized. By contrast,...

10.1098/rsos.181382 article EN cc-by Royal Society Open Science 2019-07-01

The REPRO-TDE test was performed at a depth of about 400 m in the ONKALO underground research facility Finland. Synthetic groundwater containing radionuclide tracers [tritiated water tracer (HTO), 36Cl, 22Na, 133Ba, and 134Cs] circulated for 4 years packed-off interval injection borehole. Tracer activities were additionally monitored two observation boreholes. subject modeling exercise by SKB GroundWater Flow Transport Solutes Task Force. Eleven teams participated exercise, using different...

10.1080/00295450.2023.2209234 article EN cc-by Nuclear Technology 2023-06-09

SAD kinases regulate presynaptic vesicle clustering and neuronal polarization. A previous report demonstrated that Sada-/- Sadb-/- double-mutant mice showed perinatal lethality with a severe defect in axon/dendrite differentiation, but their single mutants did not. These results indicated they were functionally redundant. Surprisingly, we show on C57BL/6N background, SAD-A is essential for cortical development whereas SAD-B dispensable. died within few days after birth. Their lamination...

10.1093/cercor/bhy253 article EN Cerebral Cortex 2018-09-17
Coming Soon ...