A novel scale for measuring social competence in patients with type 2 diabetes receiving hemodialysis

13301甲第5283号博士（保健学）金沢大学博士論文要旨Abstract 以下に掲載：Journal of Wellness and Health Care 44(2) pp.11-21 2021. ウェルネス・ヘルスケア学会. 共著者：Okayama Miki, Inagaki Michiko, Tasaki Keik

Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems

We have developed a hydraulic displacement amplification mechanism (HDAM) and studied its dynamic response when combined with a piezoelectric actuator. The HDAM consists of an incompressible fluid sealed in a microcavity by two largely deformable polydimethylsiloxane (PDMS) membranes. The geometry with input and output surfaces having different cross-sectional areas creates amplification. By combining the HDAM with micro-actuators, we can amplify the input displacement generated by the actuators, which is useful for applications requiring large deformation, such as tactile displays. We achieved a mechanism offering up to 18-fold displacement amplification for static actuation and 12-fold for 55 Hz dynamic actuation

Bending and torsional properties of commercial nickel-titanium orthodontic wires

The aim of this study was to investigate the force delivery for a variety of types and sizes of commercially available nickel-titanium wires. The relationship of the magnitude of the force and the tooth displacement in a severe crowding case is discussed. Nine brands of nickel-titanium orthodontic wires in a variety of sizes were examined with a three-point bending test and a torsion test at 37℃. Most wires exhibited superelastic behavior for the three-point bending and torsion tests at 37℃. In the three-point bending test, the variation of the average load at 1.5mm deflection during unloading ranged from 0kgf for Copper Ni-Ti 40℃ with a 0.016×0.022 inch cross-section to 0.46kgf for ORTHO LINE with a 0.021×0.025 inch cross-section. The average torsion load at a rotation of 30°on deactivation varied from 0kgf-cm for Copper Ni-Ti 40℃ to 0.023kgf-cm for ORTHO LINE. The predicted torsional angles for the maxillary arch in the severe crowding case were smaller than expected and only three positions exceeded 20°. Considering the play between bracket slots and archwire, nickel-titanium orthodontic wires of the superelastic type may not exhibit superelastic properties for torsion in most clinical situations

血液透析治療を受ける 2 型糖尿病患者の「社会力」を測定するための新しい尺度

Purpose:When beginning dialysis treatment, patients with type ２ diabetes face a need to build new relationships, as support receivers, with the people close to them, who become support givers. Taking as our base “social competence”, i.e. the ability to connect with people and build society, we created a social competence scale for Japanese patients with type ２ diabetes receiving dialysis. This study tested the reliability and validity of the scale. Method:This is a cross-sectional study that focuses on Japanese　patients with type ２ diabetes receiving dialysis (n=１６３, males=１２１, females=４２). The mean age of the patients was ６５.１±１０.３ (range ４４-９１). The mean duration of dialysis was ６.０±４.７ years (range ０.５-２５). Our data were analyzed using exploratory factor analysis, criterion related validity, and reliability testing.Results:The final version of the social competence scale for patients with type ２ diabetes receiving dialysis was composed of ５ factors, with ３２ items. All ３２ items had a Cronbach’s α of ０.８９, with a total distribution of ４９.０５%. The scale showed a significant correlation with KiSS-１８.Conclusion:This study suggests that a social competence scale for Japanese patients with type ２ diabetes receiving dialysis may be used as an essential tool for nurses in assessing the relationships between patients and those close to them. Also, by clarifying the constituent factors of social competence in patients with type ２ diabetes receiving dialysis, the study enables nurses to develop education programs for patients to cultivate their social competence. The study therefore facilitates the provision of better care in practical clinical care settings

Characteristics of Vertical Transistors on a GaN Substrate Fabricated via Na-Flux Method and Enlargement of the Substrate Surpassing 6 Inches

Imanishi M., Usami S., Murakami K., et al. Characteristics of Vertical Transistors on a GaN Substrate Fabricated via Na-Flux Method and Enlargement of the Substrate Surpassing 6 Inches. Physica Status Solidi - Rapid Research Letters, (2024); https://doi.org/10.1002/pssr.202400106.The Na-flux method is expected to be a key GaN growth technique for obtaining ideal bulk GaN crystals. Herein, the structural quality of the latest GaN crystals grown using the Na-flux method and, for the first time, the characteristics of a vertical transistor fabricated on a GaN substrate grown using this method are discussed. Vertical transistors exhibit normally off operation with a gate voltage threshold exceeding 2 V and a maximum drain current of 3.3 A during the on-state operation. Additionally, it demonstrates a breakdown voltage exceeding 600 V and a low leakage current during off-state operation. It is also described that the variation in the on-resistance can be minimized using GaN substrates with minimal off-angle variations. This is crucial for achieving the large-current chips required for future demonstration of actual devices. In addition, the reverse I–V characteristics of the parasitic p–n junction diode (PND) structures indicate a reduction in the number of devices with a significant leakage current compared to commercially available GaN substrates. Finally, a circular GaN substrate with a diameter of 161 mm, surpassing 6 inches, grown using the Na-flux method is demonstrated, making it the largest GaN substrate aside from those produced through the tiling technique

Dynamic Characteristics of a Hydraulic Amplification Mechanism for Large Displacement Actuators Systems

We have developed a hydraulic displacement amplification mechanism (HDAM) and studied its dynamic response when combined with a piezoelectric actuator. The HDAM consists of an incompressible fluid sealed in a microcavity by two largely deformable polydimethylsiloxane (PDMS) membranes. The geometry with input and output surfaces having different cross-sectional areas creates amplification. By combining the HDAM with micro-actuators, we can amplify the input displacement generated by the actuators, which is useful for applications requiring large deformation, such as tactile displays. We achieved a mechanism offering up to 18-fold displacement amplification for static actuation and 12-fold for 55 Hz dynamic actuation