Hiromi Okada

ORCID: 0000-0002-2333-2417
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About
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Research Areas
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • High-Energy Particle Collisions Research
  • Force Microscopy Techniques and Applications
  • Particle Accelerators and Free-Electron Lasers
  • Childhood Cancer Survivors' Quality of Life
  • Nuclear Physics and Applications
  • Family Support in Illness
  • Superconducting Materials and Applications
  • Surface and Thin Film Phenomena
  • Electrochemical Analysis and Applications
  • Quantum and electron transport phenomena
  • Corrosion Behavior and Inhibition
  • Adolescent and Pediatric Healthcare
  • Particle accelerators and beam dynamics
  • Mobile Ad Hoc Networks
  • Magnetic confinement fusion research
  • Network Traffic and Congestion Control
  • Cerebral Venous Sinus Thrombosis
  • Semiconductor Quantum Structures and Devices
  • Semiconductor materials and interfaces
  • Mobile Agent-Based Network Management
  • Stochastic processes and statistical mechanics
  • Sustainable Supply Chain Management
  • X-ray Spectroscopy and Fluorescence Analysis

Tohoku University
2023

Tokyo Health Care University
2022

Hokkaido University
2021

Tarbiat Modares University
2010

Protein Research Foundation
2010

Mabtech (Sweden)
2010

RIKEN
2007-2009

Institute for Theoretical and Experimental Physics
2007-2009

Kyoto University
2005-2009

Brookhaven National Laboratory
2009

An adequate interpretation of scanning tunneling microscopy (STM) images the clean Si(001) surface is presented. We have performed both STM observations and ab initio simulations for buckled dimers at ${S}_{A}$ step surface. By comparing experimental results with theoretical ones, it revealed that depend on sample bias tip-sample separation. This enables us to elucidate relationship between corrugation in atomic structure dimers. Moreover, these changes, we analyze details spatial...

10.1103/physrevb.63.195324 article EN Physical review. B, Condensed matter 2001-05-01

Family members of children with cancer experience various long-term effects as a result diagnosis and treatment. Therefore, comprehensive support is needed. As the employment rate women has increased in recent years, for working mothers diagnosed also required.We investigated following issues relevant changes that must deal with: (1) work change, (2) stress, (3) social support, (4) motivation, (5) status after diagnosis.A cross-sectional exploratory study design was used. Data were collected...

10.1097/ncc.0000000000000123 article EN Cancer Nursing 2014-06-10

We have investigated in detail the dependence of scanning tunneling microscopy (STM) images Si(001)-p(2×2) surface on bias and tip-sample distance, based first-principles molecular-dynamics simulations. STM terrace are found to be similar those at SA-step edges Si(001) surface. The present theoretical calculations predict that strongly depend sample separations, π π∗ states contribute changes corrugation images.

10.2320/matertrans.42.2247 article EN MATERIALS TRANSACTIONS 2001-01-01

Bare and anodically oxidized Ni(110) surfaces in 0.05 kmol m−3 Na2SO4 (pH = 6.5) 0.01 NaOH 12) aqueous solution have been investigated by in-situ electrochemical atomic force microscopy (EC-AFM) with resolution. We succeeded observation of unreconstructed Ni(110)-(1×1) structures both solution. Under passive region, we observed well-ordered differing from those the bare found that surface structure agrees NiO(110), whereas β-Ni(OH)2 (0001). These EC-AFM observations reveal following...

10.2320/matertrans.44.727 article EN MATERIALS TRANSACTIONS 2003-01-01

An interpretation of the scanning tunneling microscopy (STM) image a Cl-adsorbed Si(001) surface is reported based on first-principles calculations its electronic structure. From analysis spatial distribution local density states, we show that STM this calculated under Tersoff–Hamann approximation in disagreement with observed image. Some remarks associated discrepancy are given to further studies.

10.1143/jjap.42.5267 article EN Japanese Journal of Applied Physics 2003-08-15

Precise and absolute beam polarization measurements are critical for the RHIC spin physics program. Because all experimental spin‐dependent results normalized by polarization, normalization uncertainty contributes directly to final uncertainties. We aimed perform measurement an accuracy of ΔPbeam/Pbeam<5%. The polarimeter consists Polarized Atomic Hydrogen Gas Jet Target left‐right pairs silicon strip detectors was installed in RHIC‐ring 2004. This system features proton‐proton elastic...

10.1063/1.2888110 article EN AIP conference proceedings 2008-01-01

To clarify the details of mothers' employment status after completion their child's cancer treatment.A cross-sectional exploratory study.Data are collected from 62 mothers childhood survivors using self-report questionnaires. Fisher's exact test was used to determine statistical significance factors between who worked and those did not work treatment had been completed.Thirty-two treatment. There were significant differences in age, education level, at diagnosis time elapsed since working...

10.1002/nop2.1428 article EN cc-by-nc-nd Nursing Open 2022-10-21

The single transverse spin asymmetry, A_N, of the p-carbon elastic scattering process in Coulomb Nuclear Interference (CNI) region was measured using an ultra thin carbon target and polarized proton beam Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL). In 2004, data were collected to calibrate two RHIC energies (24 GeV, 100 GeV). A_N obtained as a function momentum transfer -t. results fit with theoretical models which allow us assess contribution from hadronic...

10.1142/9789812701909_0102 article EN SPIN 2005-08-01

A precise measurement of the analyzing power $A_N$ in proton-proton elastic scattering region 4-momentum transfer squared $0.001 &lt; |t| 0.032 ({\rm GeV}/c)^2$ has been performed using a polarized atomic hydrogen gas jet target and 100 GeV/$c$ RHIC proton beam. The interference electromagnetic spin-flip amplitude with hadronic spin-nonflip is predicted to generate significant 4--5%, peaking at $-t \simeq 0.003 GeV}/c)^2$. This kinematic known as Coulomb Nuclear Interference region. possible...

10.48550/arxiv.hep-ex/0601001 preprint EN other-oa arXiv (Cornell University) 2006-01-01

In situ electrochemical atomic force microscopy (EC-AFM) was used to investigate a bare Fe(110) and an anodically formed oxide on in 0.05 M Na2SO4 aqueous solution under potential control. An unreconstructed Fe(110)–(1×1) structure observed at -1.9 V by keeping the hydrogen evolution region for 10 min. This is first EC-AFM image with resolution of unpassivated iron electrodes solution. We also Fe(OH)2(0001)–(1×1) anodic layer grown single crystal -1.2 From these investigation, we have found...

10.2355/isijinternational.40.702 article EN ISIJ International 2000-01-01

Leaking glaucoma filtering blebs with scleral perforation were successfully repaired in two patients using amniotic membrane transplantation. The was placed into the subconjunctival space to cover perforated area. edge of limbal conjunctiva sutured peripheral cornea conjunctival advancement over membrane. bleb leaks closed. In addition, good and functioning filtration maintained during a follow-up period 12 months both cases. Amniotic transplantation may be effective for surgical management...

10.3928/15428877-20100210-17 article EN Ophthalmic surgery, lasers & imaging retina 2010-03-25

Adolescent and young adult (AYA) with cancer are at risk for developing sexual reproductive problems; therefore, they have special needs. AYA treated in both pediatric wards a minority Japan; thus, accumulating experience supporting this unique patient population is difficult nurses. Hence, study aimed to clarify nurses’ perceptions on support issues among cancer. A questionnaire survey was administered nurses designated hospitals across Japan who had been working least 1 year department...

10.1371/journal.pone.0265830 article EN cc-by PLoS ONE 2022-06-08

10.1002/(sici)1099-1131(199607)9:4<185::aid-dac309>3.0.co;2- article EN International Journal of Communication Systems 1996-07-01

Metabolic syndrome is a major risk factor of cardiovascular events.Obese visceral adipose tissue remodeling and malfunctioning based on chronic inflammation local immunological changes plays central role.To assess dynamic interplay between multiple cell-types in obese adipose, visualization technique vivo was therefore developed to reveal the underlying multi-cellular molecular mechanisms obesity.In imaging revealed close spatial temporal interrelationships angiogenesis adipogenesis...

10.1093/intimm/dxq243 article EN International Immunology 2010-08-01

Precise measurements of the single spin asymmetry, AN and double ANN, in proton‐proton (pp) elastic scattering region four‐momentum transfer squared 0.001 < −t 0.032 (GeV/c)2 have been performed using a polarized atomic hydrogen gas jet target RHIC proton beam at 24 GeV/c 100 GeV/c. The gaseous allowed us to achieve measurement ANN CNI for first time. Our results provide significant constraints determine magnitude poorly known hadronic spin‐flip amplitudes this energy.

10.1063/1.2750871 article EN AIP conference proceedings 2007-01-01
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