Phase boundary of hot dense fluid hydrogen

K Ohta, K Ichimaru, M Einaga, S Kawaguchi… - Scientific reports, 2015 - nature.com
We investigated the phase transformation of hot dense fluid hydrogen using static high-pressure
laser-heating experiments in a laser-heated diamond anvil cell. The results show …

Proposal of a new structural thermal vacuum sensor with diode-thermistors combined with a micro-air-bridge heater

M Kimura, F Sakurai, H Ohta, T Terada - Microelectronics journal, 2007 - Elsevier
New structural Pirani gauge-type thermal vacuum sensor with a microheater and two pn junction
diodes, Th-A and Th-B, as a high-sensitive temperature sensor working like a thermistor …

Optical recording; phase-change and magneto-optical recording

T Ohta, M Birukawa, N Yamada, K Hirao - Journal of magnetism and …, 2002 - Elsevier
Phase-change optical disk promoted digital versatile disk and magneto-optical disk promoted
audio and digital still camera disk applications. Now these optical disk technologies start …

Laboratory-based x-ray computed tomography for 3D imaging of samples in a diamond anvil cell in situ at high pressures

K Ohta, T Wakamatsu, M Kodama… - Review of Scientific …, 2020 - pubs.aip.org
Three-dimensional (3D) visualization of a material under pressure can provide a great deal
of information about its physical and chemical properties. We developed a technique …

In vitro expansion of mouse primordial germ cell‐like cells recapitulates an epigenetic blank slate

H Ohta, K Kurimoto, I Okamoto, T Nakamura… - The EMBO …, 2017 - embopress.org
The expansion of primordial germ cells ( PGC s), the precursors for the oocytes and
spermatozoa, is a key challenge in reproductive biology/medicine. Using a chemical screening …

Progress of the phase-change optical disk memory

T Ohta, N Yamada, H Yamamoto, T Mitsuyu… - MRS Online …, 2001 - cambridge.org
Optical memory has two recording modes: the photon-mode as a silver halide photograph
and the heat-mode as a laser optical disk. Though laser heat-mode recording has the …

Direct Observation of the Quantum Phase Transition of SrCu2(BO3)2 by High-Pressure and Terahertz Electron Spin Resonance

T Sakurai, Y Hirao, K Hijii, S Okubo, H Ohta… - journal of the physical …, 2018 - journals.jps.jp
High-pressure and high-field electron spin resonance (ESR) measurements have been
performed on a single crystal of the orthogonal-dimer spin system SrCu 2 (BO 3 ) 2 . With …

Effects of bench step exercise on arterial stiffness in post-menopausal women: contribution of IGF-1 bioactivity and nitric oxide production

M Ohta, N Hirao, Y Mori, C Takigami, M Eguchi… - Growth Hormone & IGF …, 2012 - Elsevier
OBJECTIVE: To examine the effect of bench step exercise on arterial pulse wave velocity (PWV)
and the associated contribution of insulin-like growth factor (IGF)-1 bioactivity and nitric …

Pressure-induced reentrant metallic phase in lithium

…, K Takahama, K Ichimaru, K Mukai, K Ohta, N Hirao… - Physical Review B, 2014 - APS
We report the metal (0–80 GPa)–semiconductor ( o C 40, 80–120 GPa)–metal ( o C 24, >120
GPa) transitions of lithium under compression, as observed through simultaneous electrical …

Effects of home-based bench step exercise on inflammatory cytokines and lipid profiles in elderly Japanese females: a randomized controlled trial

Y Nishida, K Tanaka, M Hara, N Hirao, H Tanaka… - Archives of gerontology …, 2015 - Elsevier
Purpose The purpose of the current study was to investigate the effects of a 12-week home-based
bench step exercise program on inflammatory cytokines and lipid profiles in elderly …