Effects of oral administration of soybean lecithin transphosphatidylated phosphatidylserine on impaired learning of passive avoidance in mice

Soybean lecithin transphosphatidylated phosphatidylserine (SB-tPS) was investigated for its effect on the impaired learning of a passive avoidance task by mice induced by scopolamine or cycloheximide. SB-tPS (240, 360, 480 mg/kg) administered orally significantly prolonged the step-through latency shortened by scopolamine. SB-tPS (240 mg/kg) administered orally also prolonged the step-through latency shortened by cycloheximide. These results suggest that the effect of SB-tPS on the impaired learning behavior may be related not only to the cholinergic system but also the serotonergic system.     

Highly reliable mobile liquid crystal display using AlOx deposited by atomic layer deposition for side sealing structure

A side sealing structure including, outside a sealant, AlO_x deposited using an atomic layer deposition apparatus was employed for a low‐frequency driving liquid crystal display (LCD) with a bezel width of 0.7 mm. This side‐sealing structure can effectively prevent the entry of external moisture. Prevention of decrease in voltage‐holding ratio was confirmed with a test cell having this structure. A narrow‐bezel LCD with c‐axis‐aligned a‐b‐plane‐anchored crystal In‐Ga‐Zn Oxide backplane can have long‐term high reliability as a low‐frequency driving LCD.     

Fabrication of 8K4K organic EL panel using high‐mobility IGZO material

A 13.3‐inch 8k4k organic light‐emitting diode display based on a newly developed high‐mobility indium–gallium–zinc–oxide material was fabricated. It was found that the use of a higher‐mobility material decreases the scan driver size and power consumption. Furthermore, such oxide semiconductor layers with a buried channel structure can increase process stability and reliability.     

13.3‐inch 8k4k 664‐ppi foldable OLED display using crystalline oxide semiconductor FETs

A prototype 13.3‐inch 8k4k 664‐ppi high‐resolution foldable organic light emitting diode display is constructed. C‐axis aligned a‐b‐plane‐anchored crystal In–Ga–Zn oxide field effect transistors designed using a 1.5‐µm rule process are used in the backplane. Each pixel circuit has three transistors and one capacitor, and an external circuit is used to correct pixel current.     

Separation and estimation of anionic surfactants by thin layer chromatography: i. Mixtures of sodium dodecyl benzenesulfonate,sodium dodecyl sulfate and sodium dodecanesulfonate

The conditions for separation and quantitative determination of anionic surfactants such as sodium dodecylbenzenesulfonate, sodium dodecanesulfonate and sodium dodecyl sulfate by thin layer chromatography (TLC) were investigated. Analytical results for mixtures of 2 or 3 components under optimal TLC conditions were in satisfactory agreement with known values. The absolute errors and variation coefficients both were within ca. 4%.     

High‐performance polymer‐stabilized blue‐phase LCD with low driving voltage

We have developed a polymer‐stabilized blue‐phase LCD in which the diffraction wavelength of blue‐phase liquid crystal is in the ultraviolet region and which is driven at a low voltage of V₁₀₀ = 27 V. Prototypes of 3.4‐in polymer‐stabilized blue‐phase LCDs were made, which include a highly reliable crystalline oxide semiconductor. We succeeded in fabricating not a test cell but a display having a contrast ratio higher than 1000 : 1 for the first time in the world.     

Prediction of Bending Fatigue Life of Cracked Out-of-Plane Gusset Joint Repaired by CFRP Plates

Carbon fiber reinforced polymer (CFRP), plates bonding repair method is one of the simple repair methods for cracked steel structures. In this study, the influence of width of CFRP plates on bending fatigue life of out-of-plane gusset joint strengthened with CFRP plates was investigated from the experimental and numerical point of view. In the bending fatigue test of cracked out-of-plane gusset joint strengthened with CFRP plates, the effect of width of CFRP plates on crack growth life was clarified experimentally. Namely, it was revealed that the crack growth life becomes larger with increasing the width of CFRP plates. In the numerical approach, the stress intensity factor (SIF) at the surface point of a semi-elliptical surface crack was estimated based on the linear fracture mechanics. Furthermore, the extended fatigue life of cracked out-of-plane gusset joint strengthened with CFRP plates was evaluated by using the estimated SIF at the surface point and the empirical formula of the aspect ratio of semi-elliptical crack. As the results of numerical analysis, the estimated fatigue life of the specimen strengthened with CFRP plates showed the good agreement with the test results.     

Electrical resistivity, oxidation resistivity and hardness of single crystal compounds in the Er–Rh–B system

Single crystals of ternary borides ErRh₃B (cubic,Pm3m), ErRh₃B₂ (monoclinic, C2/m) and ErRh₄B₄ (tetragonal, P4₂/nmc) have been grown from copper solution by slow cooling method. The electrical resistivity, oxidation resistivity and Vickers microhardness were studied. The electrical resistivities at room temperature of the (100) face of ErRh₃B, (001) face of ErRh₃B₂ and (100) face of ErRh₄B₄ are 25.6 μΩ·cm, 50.0 μΩ·cm and 106.8 μΩ·cm, respectively. According to thermogravimetric and differential thermal analyses, the oxidation of ErRh₃B, ErRh₃B₂ and ErRh₄B₄ start at 1030°C, 373°C and 690°C, respectively. The weight gain of the same compounds after heating in air up to 1200°C is 0.7%, 15.44% and 5.4%, respectively. The values of the Vickers microhardness for the (100) face of ErRh₃B, the (100) face of ErRh₃B₂ and the (110) face of ErRh₄B₄ are 4.8–5.0 GPa, 10.4–10.9 GPa and 10.9–11.3 GPa, respectively. The effect of boron content and crystal structure of each compound on the electrical resistivity, oxidation resistivity and Vickers microhardness are discussed.