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Tetsuro Kobayashi,Azusa Katagiri 동아시아연구원 2018 Journal of East Asian Studies Vol.18 No.3
This study examines the impact of China’s growing territorial ambitions on Japanese public opinion. By experimentally manipulating perceived territorial threats from China, we tested two potential mechanisms of increased support for a conservative incumbent leader in Japan. The first is the “rally ’round the flag” model, in which threats universally boost support for the leader through emotion. The second is the “reactive liberal” model, in which support from conservatives remains constant, but threatened liberals move toward supporting the conservative leader. Two survey experiments provided no support for the emotion-based “rally ’round the flag” model, but they lent support for the reactive liberal model in explaining the impact on Japanese public opinion. However, the second experiment indicated that priming with an image of the prime minister that highlights his role as the supreme commander of the national defense forces completely eliminated the gain in approval rates among liberals.
Excitation of Two-Dimensional Optical Waves by Electric Currents in Thin Metal-Gap Structures
Junichi Takahara,Tetsuro Kobayashi,Yuichi Fukasawa 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.47 No.1
Lateral light emissions from a thin organic electroluminescent material sandwiched between metal layers are studied experimentally. TM polarized light emission was observed by applying voltage to the metal layers. The polarization mechanism is discussed theoretically and is attributed to the excitation and propagation of two-dimensional optical waves in the four-layered planar waveguide.
Variety of the Wave Change in Compound Muscle Action Potential in an Animal Model
Zenya Ito,Shiro Imagama,Kei Ando,Akio Muramoto,Kazuyoshi Kobayashi,Tetsuro Hida,Kenyu Ito,Yoshimoto Ishikawa,Mikito Tsushima,Akiyuki Matsumoto,Satoshi Tanaka,Masayoshi Morozumi,Yukihiro Matsuyama,Naok 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.6
Study Design: Animal study. Purpose: To review the present warning point criteria of the compound muscle action potential (CMAP) and investigate new criteria for spinal surgery safety using an animal model. Overview of Literature: Little is known about correlation palesis and amplitude of spinal cord monitoring. Methods: After laminectomy of the tenth thoracic spinal lamina, 2–140 g force was delivered to the spinal cord with a tension gage to create a bilateral contusion injury. The study morphology change of the CMAP wave and locomotor scale were evaluated for one month. Results: Four different types of wave morphology changes were observed: no change, amplitude decrease only, morphology change only, and amplitude and morphology change. Amplitude and morphology changed simultaneously and significantly as the injury force increased (p <0.05) Locomotor scale in the amplitude and morphology group worsened more than the other groups. Conclusions: Amplitude and morphology change of the CMAP wave exists and could be the key of the alarm point in CMAP.
Ito Sadayuki,Sakai Yoshihito,Harada Atsushi,Ando Kei,Kobayashi Kazuyoshi,Nakashima Hiroaki,Machino Masaaki,Kambara Shunsuke,Inoue Taro,Hida Tetsuro,Ito Kenyu,Ishiguro Naoki,Imagama Shiro 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.5
Study Design: Retrospective study. Purpose: We aimed to use motor evoked potentials (MEPs) to examine the association of electrophysiological assessment of the trapezius muscle with neck pain. Overview of Literature: Previous reports on the association of neck pain with the trapezius muscle have focused on surface electromyograms and muscle oxygenation; however, to our knowledge, none of these studies included detailed data on MEPs. Methods: The study included 100 patients with cervical myelopathy who underwent surgery at the National Center for Geriatrics and Gerontology in Obu, Japan from June 2010 to March 2013. Before the surgery, neck pain was evaluated using a Visual Analog Scale (a score ≥50 indicated neck pain and a score <50 indicated no neck pain). The preoperative cross-sectional areas of the trapezius muscles were measured with cervical magnetic resonance imaging sagittal T2-weighted images. Cranial stimulation under general anesthesia was used to derive the MEPs, enabling the measurement of latency and amplitude, using preoperative MEPs of the trapezius muscles. Results: The MEP of the trapezius muscle in patients with neck pain had significantly shorter latencies than those in patients who did not have neck pain. However, there was no significant difference in the amplitude between patients with and without neck pain. However, this tended to be greater in patients with neck pain as compared to that in those without neck pain. The cross-sectional area of the trapezius muscle in patients with neck pain was significantly smaller than that in those who did not have neck pain. Conclusions: MEPs revealed electrophysiological abnormalities of the trapezius muscles in patients with neck pain, supporting a relationship of neck pain with the trapezius muscles.
Takeshi Chida,Kazuhito Kawata,Kazuyoshi Ohta,Erika Matsunaga,Jun Ito,Shin Shimoyama,Satoru Yamazaki,Hidenao Noritake,Tetsuro Suzuki,Takafumi Suda,Yoshimasa Kobayashi 거트앤리버 소화기연관학회협의회 2018 Gut and Liver Vol.12 No.2
Background/Aims: Changes in lipid profiles in patients infected with hepatitis C virus (HCV) during direct-acting antiviral therapy have been reported in recent years. However, the clinical aspects of disturbed lipid metabolism in chronic HCV infection have not been fully elucidated. Methods: Dynamic changes in serum total, low-density lipoprotein (LDL), and high-density lipoprotein (HDL) cholesterol and apolipoprotein levels in patients infected with HCV genotype 1b were examined during combination therapy with daclatasvir (DCV) and asunaprevir (ASV). Results: Total, LDL-, and HDL-cholesterol levels increased rapidly and persistently after week 4. Apolipoprotein (apo) A-I, apo B, apo C-II, and apo C-III levels were significantly higher at week 4 than at week 0. In contrast, apo A-II and apo E levels were significantly lower. The differences in LDL- and HDL-cholesterol levels were positively correlated with those of apo B and apo A-I, respectively. Interestingly, in patients with non-sustained virological response, these cholesterol levels decreased rapidly after viral breakthrough or viral relapse. Furthermore, similar changes were observed for apo A-I, apo B and apo C-III levels. Conclusions: Clearance of HCV using combination therapy with DCV and ASV results in rapid changes in serum lipid profiles, suggesting an influence of HCV infection on disturbed lipid metabolism.