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Masaru Hashimoto,Tomoki Houda,Rito Furuchi,Hiroki Nakano,Kiyomi Okamoto,Toru Sakai 한국물리학회 2023 새물리 Vol.73 No.12
The magnetization process of the S = 1=2 distorted diamond quantum spin chain with the Ising-like anisotropic ferromagnetic interaction is investigated using the numerical diagonalization method. Two kinds of wide magnetization plateaux are found at 1=3 of the saturation magnetization based on the Haldane-like mechanism and the Néel-like mechanism, respectively. Apart from the magnetization plateaux, there appear the conventional Tomonaga-Luttinger liquid (TLL) phase and the two-magnon TLL phase. The latter phase is composed of the nematic TLL phase and the SDW TLL phase. The phase diagram with respect to the ferromagnetic interaction anisotropy parameter versus the magnetization is presented.
Matsumoto, Masaru,Yagi, Tomomi,Sakai, Seiichiro,Ohya, Jun,Okada, Takao Techno-Press 2005 Wind and Structures, An International Journal (WAS Vol.8 No.2
The quasi-steady approaches to simulate the wind induced vibrations of inclined cables, especially on the rain-wind induced vibration, have been tried by many researchers. However, the steady wind force coefficients used in those methods include only the effects of water rivulet, but not the axial flow effects. The problem is the direct application of the conventional techniques to the inclined cable aerodynamics. Therefore, in this study, the method to implement the axial flow effects in the quasi-steady theory is considered and its applicability to the inclined cable aerodynamics is investigated. Then, it becomes clear that the perforated splitter plate in the wake of non-yawed circular cylinder can include the effects of axial flow in the steady wind force coefficients for inclined cables to a certain extent. Using the lateral force coefficients measured in this study, the quasi-steady theory may explain the wind induced instabilities of the inclined cables only in the relatively high reduced wind velocity region. When the Scruton number is less than around 40, the high speed vortex-induced vibration occurs around the onset wind velocity region of the galloping, and then, the quasi-steady approach cannot be applied for estimating the response of wind-induced vibration of inclined cable.
Toru Sakai,Masaru Hashimoto,Tomoki Houda,Rito Furuchi,Hiroki Nakano,Kiyomi Okamoto,Kouichi Okunishi 한국물리학회 2023 새물리 Vol.73 No.12
The magnetization process of the S = 1=2 ferromagnetic and antiferromagnetic bond-alternating chain with competing anisotropies is investigated using the numerical diagonalization of finite-size systems. It is found that when the easy-plane and easy-axis anisotropies are introduced at the ferromagnetic and antiferromagnetic bonds, respectively, the system possibly exhibits the 1/2 magnetization plateau with the spontaneous translational symmetry breaking. The phase diagrams with respect to the two anisotropies are presented.
Onodera, Toshihito,Sakai, Yasuzo,Kashiwazaki, Masaru,Ihara, Ikko,Lal, Saha Mihir The Korean Society of Superconductivity and Cryoge 2021 한국초전도저온공학회논문지 Vol.23 No.3
Milking parlor wastewater contains high concentration suspended solid (SS), nitrogen, and/or phosphate as well as organic compounds. A new biological wastewater process by magnetic separation, magnetic activated sludge (MAS) process, was applied to milking parlor wastewater treatment process. A three step wastewater treatment process of coagulation sedimentation / ammonia stripping (C/S), magnetic activated sludge process and contact oxidation (CO) was proposed for removal of these pollutants. First step, C/S process recovered 96% TN and 96% PO<sub>4</sub><sup>3-</sup>-P as resource for fertilizer from the wastewater. 81% biochemical oxygen demand (BOD) in wastewater was removed after MAS process. As a results, all pollutant concentrations satisfied Japanese effluent standards. Most of residual BOD and SS were removed by the CO process. It was estimated that the proposed process could reduce the process space to 1/7.
A Self-Adaptive Measurement Rate Control Method for an Agent-based Service Monitoring System
Satoshi Kondoh,Kensuke Takahashi,Masaru Sakai 한국통신학회 2020 한국통신학회 APNOMS Vol.2020 No.09
The increasing complexity of services of telecommunications carriers has increased the burden of operators monitoring these services and the load on the system monitoring the target devices. Operators need to choose appropriate monitoring settings for each component of the services, considering the properties of each component. In addition, whenever a component is added or changed, its monitoring settings need to be reconfigured. Furthermore, if operators configure incorrect monitoring settings, service anomalies may not be detected, or quality of service may be damaged. Therefore, the monitoring system needs to automatically input and change the monitoring settings in accordance with the service. In this paper, we propose a method to dynamically adjust the monitoring interval for a monitoring system. Finally, evaluation results show the proposed method can reduce the monitoring overhead more effectively than the previous method and can also ensure the accuracy of monitoring when a service abnormality occurs.
Toshihito Onodera,Yasuzo Sakai,Masaru Kashiwazaki,Ikko Ihara,Saha Mihir Lal 한국초전도저온공학회 2021 초전도와 저온공학 Vol.23 No.3
Milking parlor wastewater contains high concentration suspended solid (SS), nitrogen, and/or phosphate as well as organic compounds. A new biological wastewater process by magnetic separation, magnetic activated sludge (MAS) process, was applied to milking parlor wastewater treatment process. A three step wastewater treatment process of coagulation sedimentation / ammonia stripping (C/S), magnetic activated sludge process and contact oxidation (CO) was proposed for removal of these pollutants. First step, C/S process recovered 96% TN and 96% PO4 3--P as resource for fertilizer from the wastewater. 81% biochemical oxygen demand (BOD) in wastewater was removed after MAS process. As a results, all pollutant concentrations satisfied Japanese effluent standards. Most of residual BOD and SS were removed by the CO process. It was estimated that the proposed process could reduce the process space to 1/7.
Masaya Igase,Sakuya Inanaga,Shoma Nishibori,Kazuhito Itamoto,Hiroshi Sunahara,Yuki Nemoto,Kenji Tani,Hiro Horikirizono,Munekazu Nakaichi,Kenji Baba,Satoshi Kambayashi,Masaru Okuda,Yusuke Sakai,Masashi 대한수의학회 2024 Journal of Veterinary Science Vol.25 No.1
Background: The anti-programmed death 1 (PD-1) antibody has led to durable clinical responses in a wide variety of human tumors. We have previously developed the caninized anti-canine PD-1 antibody (ca-4F12-E6) and evaluated its therapeutic properties in dogs with advance-staged oral malignant melanoma (OMM), however, their therapeutic effects on other types of canine tumors remain unclear. Objective: The present clinical study was carried out to evaluate the safety profile and clinical efficacy of ca-4F12-E6 in dogs with advanced solid tumors except for OMM. Methods: Thirty-eight dogs with non-OMM solid tumors were enrolled prospectively and treated with ca-4F12-E6 at 3 mg/kg every 2 weeks of each 10-week treatment cycle. Adverse events (AEs) and treatment efficacy were graded based on the criteria established by the Veterinary Cooperative Oncology Group. Results: One dog was withdrawn, and thirty-seven dogs were evaluated for the safety and efficacy of ca-4F12-E6. Treatment-related AEs of any grade occurred in 13 out of 37 cases (35.1%). Two dogs with sterile nodular panniculitis and one with myasthenia gravis and hypothyroidism were suspected of immune-related AEs. In 30 out of 37 dogs that had target tumor lesions, the overall response and clinical benefit rates were 6.9% and 27.6%, respectively. The median progression-free survival and overall survival time were 70 days and 215 days, respectively. Conclusions: The present study demonstrated that ca-4F12-E6 was well-tolerated in non-OMM dogs, with a small number of cases showing objective responses. This provides evidence supporting large-scale clinical trials of anti-PD-1 antibody therapy in dogs.