A5101634056- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Groundwater and Isotope Geochemistry
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- earthquake and tectonic studies
- Graphite, nuclear technology, radiation studies
- Hydrocarbon exploration and reservoir analysis
- Nuclear and radioactivity studies
- Radioactive element chemistry and processing
- Transplantation: Methods and Outcomes
- Chemical Synthesis and Characterization
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Lymphoma Diagnosis and Treatment
- Organ Transplantation Techniques and Outcomes
- Lung Cancer Diagnosis and Treatment
- Chronic Lymphocytic Leukemia Research
- Nuclear Physics and Applications
- Atmospheric and Environmental Gas Dynamics
- Asymmetric Synthesis and Catalysis
- Radioactive contamination and transfer
- Immune Cell Function and Interaction
- Synthetic Organic Chemistry Methods
- Silicon Nanostructures and Photoluminescence
Shinshu University
2015-2025
Ōtani University
2024
Fukuyama City Hospital
2024
Matsumoto University
2018
Cleveland Clinic
2014-2017
Toshiba (Japan)
1992-2017
Hyogo Prefectural Amagasaki General Medical Center
2015
Kyoto University
2004-2013
NGK Insulators (Japan)
1989-2011
Japan Advanced Institute of Science and Technology
2011
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of barium sulfate-vanadium pentoxide-silica glass mixtures for preparation sulfur dioxide in isotope ratio measurementsFumitake. Yanagisawa and Hitoshi. SakaiCite this: Anal. Chem. 1983, 55, 6, 985–987Publication Date (Print):May 1, 1983Publication History Published online1 May 2002Published inissue 1 1983https://pubs.acs.org/doi/10.1021/ac00257a046https://doi.org/10.1021/ac00257a046research-articleACS PublicationsRequest...
The reduced partition function ratio predicts that among sulfide minerals in isotopic equilibria the heavy isotope (34S) is enriched following order: galena < chalcopyrite sphalerite pyrite. This order also exists coexisting sulfides natural deposits. composition of pyrite at hydrothermal temperatures estimated to be very close gaseous hydrogen sulfide. property aqueous ions determined by relative concentrations three species H2S, HS-, and S2-, all which have different ratios. Therefore, pH...
Carbon dioxide-rich fluid bubbles, containing approximately 86 percent CO(2), 3 H(2)S, and 11 residual gas (CH(4) + H(2)), were observed to emerge from the sea floor at 1335- 1550-m depth in JADE hydrothermal field, mid-Okinawa Trough. Upon contact with seawater 3.8 degrees C, hydrate immediately formed on surface of bubbles these hydrates coalesced form pipes standing sediments. Chemical composition carbon, sulfur, helium isotopic ratios indicate that CO(2)-rich was derived same magmatic...
Hole 504B is by far the deepest hole yet drilled into oceanic crust in situ, and it therefore provides most complete “ground truth” now available to test our models of structure evolution upper crust. Cored eastern equatorial Pacific Ocean 5.9‐m.y.‐old that formed at Costa Rica Rift, extends a total depth 1562.3 m below seafloor, penetrating 274.5 sediments 1287.8 basalts. The site was located where rapidly accumulating impede active hydrothermal circulation As result, conductive heat flow...
Submarine hydrothermal fluids from JADE and CLAM sites in the mid‐Okinawa Trough Backarc Basin are highly enriched CO 2 , K, Li, NH 4 CH titration alkalinity compared to MOR so far studied, while their H S 3 He contents similar. The C isotopic ratios as well these chemical features indicate that systems controlled by reaction between seawater ‐rich intermediate acid volcanic rocks of island‐arc type, with strong influence organic matter consistent its initial stage rifting on a continental...
More than 140 thermal waters of Japan were studied isotopically and chemically. Highly saline brines at Arima Takarazuka, Hyogo-Ken, Ishibotoke near Osaka indicate wide ranges δ18O δD values from meteoric = -8.2 -50.0 ‰ SMOW to highly shifted +6.5 -27.8 ‰, respectively. The isotopic these vary proportionally with chloride concentration irrespective temperature, carbonate or locality. These are chemically best explained as the mixtures local a brine Cl-= 43, 700 ppm, +8 -30 -25 ‰. latter is...
Thermal water systems at ocean coasts are mixtures of hydrothermal oceanic and local meteoric waters. They characterized isotopically by delta 18 O D values intermediate between chemically dominance Na (super +) , Ca 2+) Cl -) low concentrations SO 2-) 4 Mg . The chemical features due to interaction sea host rocks, involving precipitation anhydrite, comparable those sea-water brines Reykjanes, Iceland (Bjoernsson et al., 1970), Matupi Harbor, New Britain (Ferguson Lambert, 1972), Anatolia,...
The low attenuation areas on computed tomographic (CT) scans have been reported to represent emphysematous changes of the lung. However, regional distribution emphysema between inner and outer segments lung has not adequately studied. In this study compared by quantitative CT analysis contribution pulmonary function tests evaluated in patients with chronic obstructive disease (COPD).Chest images results were obtained from 73 COPD. divided into upper (cranial), middle, lower (caudal)...
Following the characterization of altohyrtin A (1), altohyrtins B (2) and C (3) 5-desacetylaltohyrtin (4) have been isolated from Okinawan marine sponge Hyrtios altum their plane structures parts relative configurations elucidated. Three congeneric macrolides (2, 3, 4) exhibit extremely potent cytotoxicities similar to those 1 against KB cells with IC50 values 0.02, 0.4 0.3 ng/ml, respectively.