A5051920182- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Geological and Geochemical Analysis
- Crystal Structures and Properties
- Geotechnical Engineering and Soil Mechanics
- Cardiovascular Function and Risk Factors
- Cardiomyopathy and Myosin Studies
- X-ray Diffraction in Crystallography
- High-pressure geophysics and materials
- Crystallization and Solubility Studies
- Civil and Geotechnical Engineering Research
- Virus-based gene therapy research
- Mineralogy and Gemology Studies
- Cardiac Arrhythmias and Treatments
- Metallurgical Processes and Thermodynamics
- Rock Mechanics and Modeling
- Blood Pressure and Hypertension Studies
- Geomagnetism and Paleomagnetism Studies
- Cardiac Imaging and Diagnostics
- Microstructure and Mechanical Properties of Steels
- Heart Failure Treatment and Management
- Pulmonary Hypertension Research and Treatments
- Earthquake and Tsunami Effects
- Earthquake and Disaster Impact Studies
- Advanced MRI Techniques and Applications
Kanazawa University
2004-2023
Waseda University
2014-2022
Leibniz Institute for Crystal Growth
2022
Tohoku University
2013-2021
Hiroshima University Hospital
2018
Osaka University
1997-2016
Shimane University
2008-2013
University of Shimane
2008
Kyushu University
2003
Ehime University
1985-2002
This is a M\"ossbauer study of w\"ustite at pressures above 200 GPa using synchrotron spectroscopy. Synthetic $\mathrm{F}{\mathrm{e}}_{0.96}\mathrm{O}$-w\"ustite was investigated 91(2), 95(4), 109(2), 114.5(3), 131.1(7), 133.2(2), 155(2), 167(2), 193(2) and 203(1) 300 K the SPring-8 BL11XU beamline. The spectrum 91 consists both magnetic nonmagnetic components. high-spin component decreases gradually with increasing pressure from to 203 GPa, while low-spin increases in same range. result...
We investigated the effects of nifedipine on left ventricular diastolic function in 17 asymptomatic or minimally symptomatic patients with hypertrophic cardiomyopathy by simultaneously measuring pressure and volume a catheter-tipped manometer biplane cineangiography. Studies were performed before 20 minutes after sublingual administration (20 mg). Heart rates held constant (79 +/- 12 beats/min, mean SD) right atrial pacing. Left volumes instantaneous derived from frame-by-frame (20-msec)...
To evaluate the difference in myocardial damage between primary aldosteronism and untreated essential hypertension, we performed thallium-201 single-photon emission computed tomography 10 patients with hypertension who were matched for age, sex, blood pressure, severity of left ventricular hypertrophy aldosteronism. From analysis scintigraphy, extent score was calculated. Extent significantly higher than (45.8 +/- 23.5% versus 9.5 7.3%, P < .01). After operation, pressure decreased,...
This paper updates the current view on clinical significance of systolic time intervals (STI) in estimating cardiac changes associated with hypertension. The following three were measured as STI: (1) electromechanical systole (QS 2 interval); (2) left ventricular ejection (LVET) and (3) pre-ejection period (PEP). Firstly, influences heart rate, preload, afterload myocardial contractility upon each interval reviewed; secondly, applications STI various types hypertension such essential...
Abstract To compare the effects of calcium‐channel blockers with those beta‐adrenergic in patients hypertrophic cardiomyopathy (HCM), diastolic time intervals (IIA‐O time, from second heart sound to O point apexcardiogram, IIA‐MVO IIA mitral valve opening, and MVO‐O MVO apexcardiogram), A‐wave ratio measured apexcardiogram were evaluated before after more than three months treatment. In both groups, rate significantly decreased The was not affected by either drug. IIA‐O times shortened (from...
Abstract K-rich nepheline with a structural formula of A 2 B 6 T 1 4 3 O 32 ( Z = 1) within melilite–olivine nephelinite from Hamada, Shimane Prefecture, Japan, was investigated to clarify its crystal structure and determine cation distributions in the positions channels tetrahedral 1– sites. The chemical single-crystal sample (Na 5.437 K 2.248 Mg 0.034 Ca 0.031 ) Σ7.750 (Si 8.332 Al 7.445 Fe 3+ 0.158 Ti 0.009 Cr 0.005 Σ15.949 , which results 65.2, 27.8, 2.1, 3.2 1.6 mol.% NaAlSiO KAlSiO...
Systematic change of structural transition and high-spin (HS) to low-spin (LS) ${\mathrm{Fe}}^{2+}$ in synthetic $({\mathrm{Mg}}_{0.6}{\mathrm{Fe}}_{0.4})\mathrm{O}$-ferropericlase for pressures up that the lower mantle region were investigated using synchrotron x-ray diffraction (XRD) M\"ossbauer spectroscopic methods. The XRD patterns spectra measured 160 GPa at room temperature. results analysis indicate cubic structure is maintained GPa. 19.8 24.0 consist three doublets assigned HS...
The Great Wenchuan (Sichuan) Earthquake of 2008 occurred in County, Sichuan Province, China, extensively damaging buildings and infrastructures, caused natural cut slope failures, over 85,000 people lost their lives. We present an overview the damage to civil engineering structures, emphasizing failures tunnel damage. Damage structures was due mainly high strong ground motion permanent deformation resulting from earthquake fault’s diluted front. After discussing bridges viaducts, we classify...
Abstract The distribution of Cr 3+ ions in blue and green diopsides crystallised from a glass with the composition [CaMgSi 2 O 6 (Di)] 95 [CaCrAlSiO (CrAlTs)] 5 (mol.%) was determined using Rietveld refinement X-ray diffraction data order to evaluate published results by optical spectroscopic analysis, clarify influence –Al between octahedral M 1 tetrahedral T sites on crystal structure. starting material Di CrAlTs -diopside at 800°C for days. After another 19 days 1000°C 7 days, remained...
Abstract Calcium‐channel blockers are useful for the treatment of hypertrophic cardiomyopathy (HCM), but, their adverse effects, especially, those diltiazem, have not been much concern. Forty patients with HCM were treated calcium‐channel such as nifedipine and verapamil. Atrial fibrillation was induced by diltiazem in two verapamil syn cope one patient. The clinical hemodynamic characteristics follows. All them had obstructive type (HOCM). One a high pressure gradient left ventricular...
Chromian pumpellyite and associated chromian minerals occur in basic schists the Osayama ultramafic body Okayama Prefecture, southwest Japan. The were investigated to examine their chromium contents mode of occurrence. schist blocks within body, but have not been found adjacent body. Three mineral assemblages recognized from body: (1) tremolite + phengite chlorite relic chromite; (2) amphibole omphacite titanite; (3) diopside vesuvianite garnet stilpnomelane titanite ilmenite ± chromite....
A new class of error control codes, single byte correcting and plus bit detecting are presented. The codes suitable for semiconductor memory systems organized in a b-bit-per-chip manner, b/spl ges/2, more efficient than previously known with as strong capabilities.