A5047723553- Polar Research and Ecology
- Lichen and fungal ecology
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Microbial Community Ecology and Physiology
- Fluid Dynamics and Turbulent Flows
- Cryospheric studies and observations
- Computational Fluid Dynamics and Aerodynamics
- Bryophyte Studies and Records
- Ultrasonics and Acoustic Wave Propagation
- Biocrusts and Microbial Ecology
- Peatlands and Wetlands Ecology
- Protist diversity and phylogeny
- Aerodynamics and Acoustics in Jet Flows
- Ultrasound Imaging and Elastography
- Engineering Applied Research
- Marine and coastal plant biology
- Pediatric Hepatobiliary Diseases and Treatments
- Indigenous Studies and Ecology
- Cardiovascular Function and Risk Factors
- Cardiac Imaging and Diagnostics
- Methane Hydrates and Related Phenomena
- Gas Dynamics and Kinetic Theory
- Neonatal Respiratory Health Research
- Analytical Chemistry and Sensors
Aso Iizuka Hospital
2017-2025
National Institute of Polar Research
2010-2024
Fukuoka University
2022
Kyoto University
1999-2020
OLVG
2019
Keio University Hospital
2016-2019
Kurume University
2003-2019
KLE Society Hospital
2018
Sir Ganga Ram Hospital
2018
The Graduate University for Advanced Studies, SOKENDAI
2006-2017
Global cooling in intermediate glacial climate with northern ice sheets preconditions climatic instability bipolar seesaw.
We identified Wengen, the first member of Drosophila tumor necrosis factor receptor (TNFR) superfamily. Wengen is a type III membrane protein with conserved cysteine-rich residues (TNFR homology domain) in extracellular domain, hallmark TNFR wengen mRNA expressed at all stages development. The small-eye phenotype caused by an eye-specific overexpression TNF superfamily ligand, Eiger, was dramatically suppressed down-regulation using RNA interference. In addition, and Eiger physically...
Long-term survival has been one of the most studied extraordinary physiological characteristics cryptobiosis in micrometazoans such as nematodes, tardigrades and rotifers. In available studies long-term micrometazoans, instances have primary observation, recovery conditions animals or subsequent reproduction are generally not reported. We therefore documented immediately following revival retrieved from a frozen moss sample collected Antarctica 1983 stored at −20 °C for 30.5 years. recorded...
• We examined the photosynthetic characteristics and net primary production of biological soil crusts to evaluate their contribution carbon cycle in High Arctic glacier foreland. Biological crust samples were collected from a deglaciated area Ny-Ålesund, Svalbard, Norway. Net rates (Pn) dark respiration (R) determined using CO2 gas exchange rates. effects moisture conditions, temperature photon flux density on Pn R, estimated by model based relationships between abiotic factors R. The...
Caspase-independent cell death is known to be important in physiological and pathological conditions, but its molecular regulation not well-understood. Eiger the sole fly ortholog of TNF. The ectopic expression developing eye primordium caused JNK-dependent caspase-independent death. To understand basis this Eiger-induced nonapoptotic death, we performed a large-scale genetic screen Drosophila for suppressors phenotype. We found that molecules regulate metabolic energy production are central...
In recent experiments, we demonstrated the feasibility of using luminescent coatings for surface pressure measurement in a cryogenic wind tunnel. This technique is based on new coating technology which molecules are directly deposited onto model by an electrochemical process. The resulting has extremely high oxygen sensitivity mole fractions less than 0.1%. capability allows us to measure field To demonstrate this technology, 14%-thick bump was tested 0.1-m Transonic Cryogenic Wind Tunnel at...
Members of the inhibitor apoptosis protein (IAP) family can inhibit caspases and cell death in a variety insect vertebrate systems. <i>Drosophila</i> IAP1 (DIAP1) inhibits to facilitate normal embryonic development. Here, using RNA interference, we showed that down-regulation DIAP1 is sufficient induce S2 cells. Although this process was accompanied by elevated caspase activity, activation not essential for death. We found depletion-induced strongly suppressed reduction DRONC or...
Abstract Cyanobacteria and eukaryotic algae were investigated during three seasons in 18 plots established across Sverdrup Pass valley of central Ellesmere Island, 79°N, Canada. The sites differed altitude, substratum, other characteristics. A high species diversity totalled 136 taxa. accounted for 52 84 species. In both groups, numerous did not correspond to any taxa described. However, always coincide with algal abundance or biomass. On older stable landscapes, visible crusts developed,...
Difficulties in measuring the contplex dielectric constant of a highly conductive material such as aqueous polyelectrolytes including biopolymers arise from (l) electrode polarization effect and (2) d.c. conductance specimen which is very much higher than due to loss drifts with time. A new method has been developed first difficulty avoided by employing four-electrode cell second orue overcome direct measurement frequency difference spectrum impedance, ΔZ(ω)=Z(ω)-Z(ω0), between ω reference...
Aquatic mosses in the genera Bryum and Leptobryum form unique tower-like "moss pillars" underwater some Antarctic lakes, association with algae cyanobacteria. These are communities a two-layer structure comprising an oxidative exterior reductive interior. Although habitats photosynthetic properties of moss pillars have been reported, microfloral composition has not described. Here we report fatty acid analysis one pillar molecular phylogenetic analysis, based on 16S rRNA gene, this other...
The human MLL genes (MLL1 to MLL4) and their Drosophila orthologs, trithorax (trx) related (trr), encode proteins capable of methylating histone H3 on lysine 4. MLL1 MLL2 are most similar trx, while MLL3 MLL4 more closely trr. Several mutated in cancers, but how these regulate cell proliferation is not known. Here we show that trr mutant cells have a growth advantage over wild-type neighbors display changes the levels multiple division, including Notch, Capicua, cyclin B. clones markedly...
Luminescent molecular probes imbedded in a polymer binder form temperature or pressure paint. On excitation by light of the proper wavelength, luminescence, which is quenched either thermally oxygen, detected camera photodetector. From luminescent intensity, and can be determined. The basic photophysics, calibration, accuracy time response paints described followed applications low speed, transonic, supersonic cryogenic wind tunnels rotating machinery.
In the rodent and human fetus, a diurnal cortisol rhythm is observed that entrained in antiphase to maternal rhythm. However, after birth, adrenal circadian becomes unsynchronized with clock time, an adult-type, 24-h only few months. Little known about when how fetal synchronized day-night cycle.To investigate function of newborn infant, eight serial saliva samples were collected every 3 h over 24 (starting at 0900 h) 27 infants.Cortisol levels higher during period 1500 earlier than 2100...