Osamu Mori

ORCID: 0000-0001-9441-3356
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About
Contact & Profiles
Research Areas
  • Spacecraft Dynamics and Control
  • Astro and Planetary Science
  • Space Satellite Systems and Control
  • Aerospace Engineering and Energy Systems
  • Spacecraft and Cryogenic Technologies
  • Structural Analysis and Optimization
  • Planetary Science and Exploration
  • Spacecraft Design and Technology
  • Modular Robots and Swarm Intelligence
  • Cancer and Skin Lesions
  • Inertial Sensor and Navigation
  • Solar and Space Plasma Dynamics
  • Space Science and Extraterrestrial Life
  • Advanced Materials and Mechanics
  • Sarcoma Diagnosis and Treatment
  • Control and Dynamics of Mobile Robots
  • Fluid Dynamics Simulations and Interactions
  • Autoimmune Bullous Skin Diseases
  • Hair Growth and Disorders
  • Skin and Cellular Biology Research
  • Isotope Analysis in Ecology
  • Robotic Path Planning Algorithms
  • Cancer Diagnosis and Treatment
  • Robotic Mechanisms and Dynamics
  • Rocket and propulsion systems research

Japan Aerospace Exploration Agency
2015-2024

Institute of Space and Astronautical Science
2015-2024

The Graduate University for Advanced Studies, SOKENDAI
2024

Mitsubishi Electric (Germany)
2017-2022

Menicon (Japan)
2006-2020

Mitsubishi Electric (Japan)
2006-2020

Aomori Public University
2019

Kurume University
1994-2017

Tokushima Red Cross Hospital
2015-2017

Jobu University
2014-2017

The Hayabusa2 spacecraft arrived at the near-Earth carbonaceous asteroid 162173 Ryugu in 2018. We present observations of Ryugu's shape, mass, and geomorphology. has an oblate "spinning top" with a prominent circular equatorial ridge. Its bulk density, 1.19 ± 0.02 grams per cubic centimeter, indicates high-porosity (>50%) interior. Large surface boulders suggest rubble-pile structure. Surface slope analysis shows shape may have been produced from having once spun twice current rate. Coupled...

10.1126/science.aav8032 article EN Science 2019-03-19

The Hayabusa2 spacecraft investigated the small asteroid Ryugu, which has a rubble-pile structure. We describe an impact experiment on Ryugu using Hayabusa2's Small Carry-on Impactor. produced artificial crater with diameter >10 meters, semicircular shape, elevated rim, and central pit. Images of resulting ejecta were recorded by Deployable CAMera 3 for >8 minutes, showing growth curtain (the outer edge ejecta) deposition onto surface. was asymmetric heterogeneous it never fully detached...

10.1126/science.aaz1701 article EN Science 2020-03-19

Abstract C-type asteroids 1 are considered to be primitive small Solar System bodies enriched in water and organics, providing clues the origin evolution of building blocks life. asteroid 162173 Ryugu has been characterized by remote sensing 2–7 on-asteroid measurements 8,9 with Hayabusa2 (ref. 10 ). However, ground truth provided laboratory analysis returned samples is invaluable determine fine properties other planetary bodies. We report preliminary results analyses on from particle size...

10.1038/s41550-021-01550-6 article EN cc-by Nature Astronomy 2021-12-20

Collecting a sample of asteroid Ryugu The Hayabusa2 spacecraft recently traveled to the nearby carbonaceous collect samples and return them Earth for laboratory analysis. Morota et al. describe Hayabusa2's first collection, taken during brief touchdown on Ryugu's surface. Close-up images video sampling process allowed authors investigate surface colors morphology small scale. Relating these craters stratigraphy constrains evolution Ryugu. conclude that experienced prior period strong solar...

10.1126/science.aaz6306 article EN Science 2020-05-07

The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. mission performed two landing operations to collect samples of surface and subsurface material, latter exposed by an artificial impact. We present images second touchdown site, finding that ejecta from impact crater was at sample location. Surface pebbles both sites show morphological variations ranging rugged smooth, similar Ryugu's boulders, shapes quasi-spherical flattened. were returned Earth on 6...

10.1126/science.abj8624 article EN Science 2022-03-03

Abstract Volatile and organic-rich C-type asteroids may have been one of the main sources Earth’s water. Our best insight into their chemistry is currently provided by carbonaceous chondritic meteorites, but meteorite record biased: only strongest types survive atmospheric entry are then modified interaction with terrestrial environment. Here we present results a detailed bulk microanalytical study pristine Ryugu particles, brought to Earth Hayabusa2 spacecraft. particles display close...

10.1038/s41550-022-01745-5 article EN cc-by Nature Astronomy 2022-08-15

Hirokata Sawada Japan Aerospace Exploration Agency, Kanagawa, 252-5210, JAPAN Osamu Mori 2 Nobukatsu Okuizumi Yoji Shirasawa University of Tokyo, Yasuyuki Miyazaki Nihon University, Chiba, 274-8501, Michihiro Natori Waseda 169-8555, Saburo Matunaga Tokyo Institute Technology, 152-8552, Hiroshi Furuya Hiraku Sakamoto

10.2514/6.2011-1887 article SW 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2011-04-04

The Japan Aerospace Exploration Agency (JAXA) will make the world's first solar power sail craft demonstration of photon propulsion and thin film generation during its interplanetary cruise by IKAROS (Interplanetary Kite-craft Accelerated Radiation Of Sun). spacecraft deploys spans a membrane 20 meters in diameter taking advantage spin centrifugal force. weighs approximately 310kg, launched together with agency's Venus Climate Orbiter, AKATSUKI May 2010. This be actual flying an voyage.

10.2322/tastj.8.to_4_25 article EN TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN 2010-01-01

We investigated by immunohistochemistry the deposition of α-synuclein in brains deceased patients with parkinsonism-dementia complex (PDC) Guam. Five 13 PDC showed numerous positive neuronal inclusions and abnormal neurites, chiefly amygdala. Similar lesions were observed, although to a lesser extent, entorhinal cortex dorsal vagal nucleus. No observed motor or locus coeruleus, only small number found Sommer's sector, temporal cortex, substantia nigra. Some reminiscent cortical Lewy bodies...

10.1093/jnen/59.7.585 article EN Journal of Neuropathology & Experimental Neurology 2000-07-01

Abstract Objectives: To assess and compare the cytotoxicity antimicrobial activity of six multipurpose disinfecting contact lens solutions (MPDS). Method: Six MPDS were assessed compared: MeniCare Soft , Complete Moisture Plus Solo‐Care Aqua Opti‐Free Express ReNu MultiPlus MoistureLoc . Cytotoxicity was evaluated by means colony‐forming assay (ISO 10993‐5) using one cell line. One hundred Chinese hamster's fibroblast V79 cells in 2 mL medium inoculated into 6‐well plates cultured for 24 h....

10.1111/j.1475-1313.2006.00393.x article EN Ophthalmic and Physiological Optics 2006-08-11

Crossed cerebellar diaschisis (CCD) refers to reduced metabolism and blood flow in the hemisphere contralateral a cerebral lesion. Many cortical areas have been reported cause CCD without consideration of confounding factors. We performed single-photon emission computed tomography (SPECT) patients with infarction identify regions independently related CCD, controlling for possible effects.Patients unilateral (n=113; 75 male, 38 female; mean+/-SD age, 66+/-13 years) underwent SPECT brain...

10.1161/01.str.0000109771.56160.f5 article EN Stroke 2004-01-27

Abstract To explore an easily accessible and reproducible model for examining the effect of minoxidil on hair growth, we studied natural cycles rats from birth to 80 days age. During 1st 2nd postnatal cycles, follicles grew very rapidly size anagen were markedly enlarged. In 3rd cycle (50 approximately 100 age), duration telogen phase lasted 20 days. Topical minoxidil, 1%, 3%, or 5% solution, applied backs 23 (weaning) days, induced a remarkable shortening in cycle. Although dose‐dependent...

10.1111/j.1346-8138.1990.tb01641.x article EN The Journal of Dermatology 1990-05-01
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