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Thermal Expansions of Ferroelectric Rb2CdI4
Toshihisa Yamaguchi,Fuminao Shimizu,Masaaki Takashige,Tadashi Kurihama 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
The ferroelectric Rb2CdI4 shows the largest peak of the dielectric constant at the Curie point (Tc = 211 K) among the Tl2ZnI4 group ferroelectrics of Sr2GeS4-type crystal structure (monoclinic system). Furthermore, the shoulder-like anomaly in the dielectric constant of Rb2CdI4, as for most ferroelectrics of this group, appears at the temperature (Ts = 150 K), which is lower by 50 degrees than Tc. In this research, thermal expansions of the crystal grown by the Bridgman method were measured in the temperature range from 4 K to 500 K by using a clip-type strain-gauge dilatometer. The feature of a second-order transition had appeared clearly at Tc = 211 K in thermal expansions xi (i = a, b, and c; a is perpendicular to the a-plane); however, anomalies were not seen clearly around the Ts.
3-D Analysis of Core Material Effects of Motors on Torque and Iron Loss Characteristics
Kawase Yoshihiro,Yamaguchi Tadashi,Okouchi Toshinori,Nord Goran,Kanno Koki The Korean Institute of Electrical Engineers 2005 KIEE International Transactions on Electrical Mach Vol.b5 No.3
In this paper, a surface permanent magnet motor made of the Soft Magnetic Composites (SMC) is analysed using the 3-D finite element method. By comparing with the motor made of the silicon steel sheets, the usefulness of the SMC for the eddy current loss is clarified quantitatively.
( Taku Kobayashi ),( Hiroaki Ito ),( Toshifumi Ashida ),( Tadashi Yokoyama ),( Masakazu Nagahori ),( Tomoki Inaba ),( Mitsuhiro Shikamura ),( Takayoshi Yamaguchi ),( Tetsuharu Hori ),( Philippe Pinton 대한장연구학회 2021 Intestinal Research Vol.19 No.4
Background/Aims: A subgroup analysis was conducted in Japanese patients with moderate to severe ulcerative colitis (UC) enrolled in the phase 3 VISIBLE 1 study, which evaluated the safety and efficacy of a new vedolizumab subcutaneous (SC) for-mulation. Methods: Eligible patients received open-label infusions of vedolizumab 300 mg intravenous (IV) at weeks 0 and 2 in the induction phase. Patients with clinical response by complete Mayo score at week 6 entered the double-blind maintenance phase and were randomized to vedolizumab 108 mg SC every 2 weeks, placebo, or vedolizumab 300 mg IV every 8 weeks. The primary endpoint was clinical remission (complete Mayo score ≤2 points; no individual subscore >1 point) at week 52. Results: Of 49 patients who entered the induction phase, 22 out of 49 patients (45%) had clinical response at week 6 and were randomized to vedolizumab 108 mg SC (n=10), placebo (n=10), or vedolizumab 300 mg IV (n=2). At week 52, 4 out of 10 pa-tients (40%) who received vedolizumab SC had clinical remission versus 2 out of 10 patients (20%) who received placebo (dif-ference: 20% [95% confidence interval, ±27.9 to 61.8]). Two patients (2/10, 20%) who received vedolizumab SC experienced an injection-site reaction versus none who received placebo. Conclusions: Our results indicate that the efficacy of vedolizumab SC in a subgroup of Japanese patients with UC are similar with those in the overall VISIBLE 1 study population, and with those established with vedolizumab IV. The safety and tolerability of vedolizumab SC were generally similar to that established for vedolizumab IV. (ClinicalTrials.gov ID NCT02611830; EudraCT 2015-000480-14) (Intest Res 2021;19:448-460)
Possible Existence of α-β phase transition in Tl2ZnCl4
Fuminao Shimizu,Koh-ichi Suzuki,Masaaki Takashige,Tadashi Kurihama,Toshihisa Yamaguchi 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
It was revealed that Bridgman crystals of Tl2ZnCl4 have a supercooled state of the hightemperature phase with orthorhombic K2SO4 structure, as seen in Tl2ZnI4 group substances. The original stable phase at room temperature is ff-phase with monoclinic Sr2GeS4 structure. The transition point exists around 340 K, and the phase-transition point was conrmed at 363 K in the -phase. Furthermore, on cooling, another phase transition point was conrmed at 173 K in the supercooled-phase.