Researchers used first-principles calculations to investigate antigorite's structure under high pressure and temperature conditions. The study found that antigorite gradually dehydrates as pressure increases, changing into a structure with a shorter wavelength, affecting the distribution of intermediate-depth earthquakes.
Researchers found sound velocities compatible with seismic profiles at depths of 740-1260 km, supporting garnet presence. The results have significant implications for the Moon's composition and formation, as well as its interior temperature and dynamo.
Researchers found stishovite's unit-cell volume expands excessively with water, but only briefly and at high pressures. The excess volume decreases rapidly with increasing temperature, suggesting stishovite may not be a stable water carrier in the lower mantle.
Transient creep of olivine explains long-lasting crustal deformation after great earthquakes. High-viscosity upper mantle rocks are not the cause, contrary to previous assumptions.
Researchers investigate partition coefficients of first-transition row elements in olivine and silicate melt to understand petrogenetic processes in planetary basalts. The study reveals the role of Cr-rich cumulates in lunar basalts and implications for reducing conditions in the lunar mantle.
The study successfully achieved stereoselective up-conversion of photon energy in colloidal clay using a chiral donor/acceptor pair. This process has the potential to develop chiral sensing on the basis of up-conversion in colloidal clay systems.
Researchers at Ehime University have developed a clay column chromatography method for the separation and resolution of enantiomers, which are essential in various industries. The method uses a chiral Cu(II) complex and synthetic hectorite to achieve nearly baseline separation of D- and L-enantiomers.
Researchers developed a proximity-dependent biotin labeling enzyme, FabID, to analyze extracellular protein-protein interactions of living cells. The study successfully identified novel interacting proteins with the epidermal growth factor receptor EGFR, revealing ligand-dependent and drug-dependent changes.
A new machine learning approach predicts the binding affinity of 7,000 PFAS to human PPARα, revealing key molecular characteristics. The study highlights the importance of alternative PFAS with similar binding properties to legacy chemicals like PFOA and PFOS.
Researchers have developed a method to create switchable and metastable discrete supramolecular structures through chiral self-sorting. The structures exhibit thermo-/mechano-chromism and are based on homochiral dimers with matched propeller-shaped chirality.
Researchers developed a new bispecific antibody therapy to target myeloma cells with drug resistance. The therapy, called B-BiTE, successfully activated human T cells and NK cells against various myeloma cells.
Researchers evaluate bisphenols and hydroxylated polychlorinated biphenyls' impact on seal endocrine systems. Computer simulations predict effects, providing valuable insights into species-specific responses.
Exposure to tris(2-chloroisopropyl) phosphate (TCIPP) reduces survival and causes malformations in chicken embryos, including reduced body length and vascularization issues. TCIPP exposure also affects heart rate and somite formation, indicating a potential risk to avian development.
This study investigates the impact of organohalogen contamination on Baltic Atlantic salmon. Key findings include differences in xenobiotic and amino acid metabolism between wild and hatchery-reared salmon, as well as correlations with polychlorinated biphenyl concentrations.
A team of researchers used the Subaru Telescope to discover 162 quasars in the early universe, including 22 that lived less than 800 million years old. The observation provides insights into the origin of supermassive black holes and their relationship with galaxies.
Researchers investigated hcp-iron rheology at high pressure and temperature using deformation experiments. The study suggests the equatorial growth or translation mode model is dominant in the Earth's inner core, with an estimated viscosity of ≥ 10^19 Pa s.
Researchers developed an atactic C1 polymer with a high melting point by incorporating amide-linkages into its side-chain. The dense-packing of its side chains enhances hydrogen-bonding interactions, resulting in a higher melting point of up to 130°C.
The study developed a new synthetic method for homoHPHACs and synthesized a series of compounds with electron-donating to electron-accepting substituents. Substituent effects on structural, optical, redox, and antiaromatic properties were demonstrated, with electron-accepting substituents showing strongest anti-aromatic and aromatic pr...
Research investigates early magma ocean and its impact on the Earth's surface environment, shedding light on planetary interior and surface interactions. The study suggests that metallic iron from late-accreting materials may have reduced the upper mantle's oxidation state.
Researchers found that the early Earth's magma ocean was significantly more oxidized than today's mantle, leading to a CO2-rich atmosphere rich in SO2. This high oxidation state likely played a crucial role in supplying biologically available organic molecules and shaping the planet's habitability.
New synthesis approach yields arylbenzoporphyrins and phenanthroporphyrins via retro Diels–Alder reaction and intramolecular Scholl reaction. The optical and electronic properties of the unusual porphyrins are analyzed using magnetic circular dichroism spectroscopy and time-dependent density functional theory calculations.
The study developed a new high-throughput assay method tRNA-MaP to identify characteristic properties of tRNA modification enzymes. Using this technique, researchers predicted numerous natural modifications in Geobacillus stearothermophilus tRNAs and analyzed the substrate recognition mechanism of tRNA m1A22 methyltransferase TrmK.
Researchers validated the use of World Health Organization toxic equivalency factors (WHO-TEFs) to manage brominated dioxin risks in aquatic environments. The study found that mixed-halogenated furans are more toxic than TCDD, with specific congeners showing higher toxicity potentials.
Researchers analyzed seafloor sediment cores from Beppu Bay and found a significant increase in microplastics since the 1950s. Phytoplankton activity was linked to higher MP sedimentation rates, suggesting a correlation between biological activity and MP pollution.
Researchers found emerging organophosphate esters (OPEs) at higher concentrations than legacy brominated flame retardants (BFRs) in settled dust from informal end-of-life vehicle recycling sites in Vietnam. Chlorinated OPEs were specifically identified as a major contaminant, possibly released from vehicle upholstery and fabrics.
Deformation experiments on natural olivine reveal major faulting and earthquakes under deep mantle conditions. The growth of ultra-fine grained 'new' olivine induces rapid sliding of faults.
Researchers developed a new initiating system for diazoacetate polymerization, introducing a functional group at the α-chain end of poly(alkoxycarbonylmethylene)s. The technique enables broadening the generality and utility of diazoacetate polymerization, a method for preparing sp3-carbon-based main-chain polymers.
Researchers propose various immune therapy designs to treat Chronic Hepatitis B, with a focus on improving treatment outcomes and reducing adverse effects. Immune therapies offer an alternate approach to antiviral drugs, which have limitations such as cost and low efficacy.
Strigolactones act as a cue for neighboring plant presence and root density-sensing mechanism in flowering plants. This discovery suggests that strigolactone biosynthesis is driven by supra-organismal environmental levels, enabling plants to adapt to their rhizospheric environment.
The study applies VCD to investigate intermolecular interactions in sodium montmorillonite's interlayer spaces. The results show the utility of VCD in revealing subtle changes in vibrational properties, with promise for applications in heterogeneous asymmetric reactions.
This study found a significant negative correlation between contaminant concentrations and serum TH levels in pet cats. Exposure to organohalogen compounds causes a decrease in serum TH levels, leading to chronic oxidative stress.
A team of scientists used high-pressure X-ray measurements to study the structure of SiO2 glass. They found bimodal features in the silicon's second shell, corresponding to a tetrahedral symmetry structure at low pressures and collapse at high pressures. This discovery sheds light on the nature of silicate magmas and materials science.
Researchers identified UHRF1 as a protective factor in rheumatoid arthritis, where its suppression exacerbates disease. Stabilizing UHRF1 with Ryuvidine improves arthritis pathogenesis and suppresses organoid development.
A study found that BPA exposure in utero has a more significant impact on rat offspring than mothers exposed prenatally. The effects of BPA on maternal rats were slight compared to those of their offspring.
Researchers developed a comprehensive analysis method to identify interacting proteins in drug development, using proximity-dependent biotinylation. This method enables the targeting of previously difficult-to-target proteins, leading to improved therapeutic agents with reduced side effects.
Scientists investigate the synthesis and characterization of tropone-embedded HomoHPHACs, revealing that methylation induces clear antiaromaticity due to tropylium cation formation. The discovery paves the way for new applications in electronics materials.
Researchers at Ehime University developed AnExSP, a novel sample preparation method that allows for fast and easy protein analysis from tiny cell samples. The method enables the detection of approximately 7,000 different protein components in just one microgram of human cultured cell protein extract.
Researchers found that even non-conduction pathway molecules can affect superconducting properties, leading to high-Tc superconductor development. Careful molecular design is crucial for creating these materials.
Researchers at Ehime University discovered a universal relationship between sample dimensions and physical properties. They found that fractal dimensions govern material properties such as electrical conduction and magnetism.
Researchers at Ehime University synthesized a wing-shaped HPHAC dimer with stable redox properties. The study found enhanced aromaticity in the 3D space surrounded by two HPHACs in the tetracationic species, due to magnetic and electronic interactions.
Scientists successfully synthesized diazuliamethyrin, a core-modified hexaphyrin with antiaromatic properties. The compound's 24pi non- or antiaromatic character was confirmed through NMR, absorption, and MCD spectra analyses.
Single-cell analyses reveal turgor-associated metabolic modifications in watercored apples, leading to increased production of volatile compounds. A significant concentration of these compounds is detected at the border region, where a water potential gradient facilitates water transport to the watercore area.
Researchers discovered specific accumulation of halogenated contaminants in raptors, including previously unseen compounds. The findings suggest high biomagnification potential in the terrestrial food web and emphasize the importance of monitoring untargeted POPs.
Scientists at Ehime University successfully measured the longitudinal and shear velocities of MgSiO3 majorite garnet up to 18 GPa and 2000 K. The results suggest that elastic softening occurs in mantle garnets with increasing pressure, potentially affecting subducted slab speeds.
Researchers developed a new method to map supramolecular chirality in insect wings using microscopic vibrational circular dichroism (VCD). The technique revealed segregated microdomains of proteins with different secondary structures, unattainable by conventional FT-IR spectroscopy.
Researchers reprogrammed whale cells into neuronal cells to investigate the neurotoxic effects of an environmental pollutant. The study found that exposure to the pollutant led to apoptosis and disrupted cellular signaling pathways, ultimately causing neurodegeneration.
The study reports the crystal structures of aconitase X enzymes from bacteria and archaea, providing novel insights into their catalytic mechanisms. The findings suggest that ancestral active sites in aconitase superfamily are conserved across different species.
Scientists successfully synthesized cyclo[9]pyrroles via oxidative coupling of terpyrrole, showing intense absorption at 1,740 nm. The molecular structure and electronic properties were analyzed using NMR and X-ray diffraction, providing insights into the optical and physical properties of porphyrinoids.
Scientists conducted new experiments on carbon partitioning between metal and silicate using chondritic starting materials. The results suggest that planetary embryos may have had nearly saturated carbon content in their mantles, which could be a natural consequence of core-mantle partitioning during Earth's formation.
Researchers developed a new light-sheet fluorescence microscope with extended field of view and reduced photodamage, enabling high-resolution cellular imaging over three days. The technology contributes to understanding embryonic development and pathogenesis, and is expected to advance drug development.