Publications by authors named "T Onimaru"
Two-dimensional organic-inorganic perovskites have been attracted as candidates for multiferroic materials that exhibit two or more ferroic orders such as ferromagnetism, ferroelectricity, ferroelasticity, and ferrotoroidicity. Here, we introduce the structure, ferroelastic domains and magnetic properties of the two-dimensional organic-inorganic perovskite [CH(CH)NH]FeCl (CHEA-Fe) composed of 2-(1-cyclohexenyl)ethylammonium and FeCl . CHEA-Fe underwent two ferroelastic phase transitions from tetragonal to orthorhombic at 332 K and to monoclinic at 232 K with decreasing temperature and exhibited ferroelastic domains under polarized light as a consequence of these ferroelastic phase transitions.
View Article and Find Full Text PDFIntroduction: Thrombotic and haemorrhagic complications have been reported following transcatheter aortic valve implantation (TAVI). However, few reports have studied perioperative changes in coagulation and platelet function after TAVI. Furthermore, there are no clear guidelines for antithrombotic therapy.
View Article and Find Full Text PDFCatheterization for structural heart disease (SHD) requires fluoroscopic guidance, which exposes health care professionals to radiation exposure risk. Nevertheless, existing freestanding radiation shields for anesthesiologists are typically simple, uncomfortable rectangles. Therefore, we devised a new perforated radiation shield that allows anesthesiologists and echocardiographers to access a patient through its apertures during SHD catheterization.
View Article and Find Full Text PDFArticle Synopsis
- The dynamic structure factor S(Q,E) of liquid EuGaGe (EGG) was measured through inelastic x-ray scattering, revealing similarities in local structure with liquid BaGaSn (BGS) based on similar excitation energies.
- The study found that the longitudinal acoustic mode in EGG disperses faster in its liquid state than in the solid, indicating that interatomic forces weaken when melting occurs.
- Lower energy excitations were detected in both liquids, with findings suggesting that these are related to the motion between Eu and (Ga, Ge) atoms, as compared to the longitudinal phonon dispersion in solid EGG from computational models.
Article Synopsis
- The study explored the changes in coagulation and platelet functions during the perioperative period of transcatheter aortic valve implantation (TAVI) using thromboelastography (TEG) platelet mapping.
- It involved 25 patients with measurements taken at three different time points: before heparinization, and on postoperative days one and three.
- Results showed that while clot strength (MA) decreased until POD 3, coagulation capacity increased, indicating an antithrombotic change, and platelet function was notably affected by the ADP receptor system over the three-day period post-TAVI.