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61.
We studied the effects of continuous epidural administration of fentanyl and morphine with bupivacaine for management of postcesarean pain. Eighteen patients received either bolus epidural administration of fentanyl 100 micrograms or morphine 3 mg with 0.5% bupivacaine 4 ml, followed by continuous infusion of fentanyl 33 micrograms.ml-1 with 0.17% bupivacaine or morphine 0.21 mg.ml-1 with 0.17% bupivacaine for 48 hours, respectively. Pain score was assessed at 0 h, 12h, 24h and 48h after leaving the operating room. Pain score increased significantly and progressively in the fentanyl group. In all cases pruritus was noted. Severe pruritus was observed in the morphine group significantly more than in the fentanyl group. The current results indicate that morphine may be preferable to fentanyl for postcesarean pain control using the present opioid doses. 相似文献
62.
N Ishiyama M Kitagawa H Takahashi T Kina K Hirokawa 《Canadian Metallurgical Quarterly》1998,66(6):274-283
The administration of corticosteroids induced apoptosis of thymocytes in vivo. Among various adhesion molecules examined, vascular cell adhesion molecule-1 (VCAM-1, CD106) was shown to be strongly expressed in these apoptotic cells. Flow cytometric analysis also showed the expression of VCAM-1 in apoptotic thymocytes. An RT-PCR study demonstrated the expression of VCAM-1 mRNA in thymocytes. Splenic lymphocytes and other lymphoid cell lines also expressed VCAM-1 during the process of apoptosis. VCAM-1 mRNA expression was also observed in RT-PCR performed on these cell lines. 相似文献
63.
64.
H. Ishiyama T. Ishikawa T. Hashimoto Y.X. Watanabe Y. Hirayama N. Imai H. Miyatake M.H. Tanaka Y. Fuchi N. Yoshikawa S.C. Jeong H. Kawakami I. Katayama T. Nomura S. Mitsuoka K. Nishio M. Matsuda P.K. Saha H. Ikezoe S.K. Das Y. Mizoi T. Fukuda 《Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment》2006,560(2):366-372
Low-energy (1–2 MeV/nucleon) radioactive nuclear beams (RNBs) of 8Li, 12B and 16N have been produced through nuclear transfer reactions using a recoil mass separator (RMS) at Japan Atomic Energy Research Institute (JAERI). The contamination of the primary beam to the RNB was investigated quantitatively and was well suppressed. The typical beam intensities of 8Li-, 12B- and 16N-RNB were 1.4×104, 7.8×103 and , respectively. Their purities were 99%, 98% and 98.5%, respectively. 相似文献
65.
Polycrystalline thin films of Ti-doped indium oxide (indium–titanium-oxide, ITiO) were prepared by d.c. magnetron sputtering and their electrical and optical properties were investigated. Doping of Ti was effective in improvement of the electroconductivity of the indium oxide: the electrical resistivity of 1.7 × 10−3 Ω cm of non-doping decreased to minimum value of 1.8 × 10−4 Ω cm at 2.4 at.% Ti-doping when the films were deposited at 300 °C. The polycrystalline ITiO films of 0.8–1.6 at. % Ti-doping showed the high Hall mobilitiy (82–90 cm2 V−1 s−1) and the relatively low carrier density (2.4–3.5 × 1020 cm−3) resulting in characteristics of both low resistivity (2.1–3.0 × 10−4 Ω cm) and high transmittance in the near-infrared region (over 80% at 1550 nm), which cannot be shown in the conventional Sn-doped indium oxide (ITO) films. 相似文献
66.
67.
Shin-ichi Ishiyama Tohru Nishimura Yuh Tsuchiya 《International Journal of Impact Engineering》1983,1(3):227-247
A numerical study of the impact response of plane frame structures with thin-walled members was performed to predict the deformation and absorbed energy of automobiles under crash loading.The collapse characteristics of thin-walled members under axial compression or bending loads are considered in the present analysis. The load-displacement relations are given for curved beam members, and the inelastic deformations of members are described in terms of equivalent internal loads and their histories.Crash tests on simplified plane frame models impacted against a flat barrier were performed to verify the proposed method.Numerical analyses were also made of an oblique barrier impact of an automobile underframe structure and a rear end collision of a vehicle structural system. The analytical predictions were compared with the corresponding test results. 相似文献
68.
Hiroshi Ueda Hiroki Hayashi Atsushi Ishiyama Makoto Tsuda 《Electrical Engineering in Japan》2002,141(2):25-33
We have designed and constructed a new type of active‐maglev system using YBCO bulk and two electromagnets and have demonstrated that levitation height was remarkably improved by continuous levitation. In the active‐maglev system, however, the upper and lower coils differed in the coil size and an iron plate beneath the lower coil was used to enhance the magnetic field around the bulk. Considering the real application to maglev transporter in the axial direction, we must realize continuous leviation using a larger number of electromagnets without such iron plate and enable the levitation height to be controlled freely. In this paper, we demonstrate continuous levitation while controlling the leviation height using three‐ and five‐electromagnet systems and investigate electromagnetic behavior within the bulk using an FEM computer program. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 141(2): 25–33, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10055 相似文献
69.
Jeong SC Oyaizu M Imai N Hirayama Y Ishiyama H Miyatake H Niki K Okada M Watanabe YX Otokawa Y Osa A Ichikawa S 《The Review of scientific instruments》2011,82(3):033508
The ion loss distribution in an electron cyclotron resonance ion source (ECRIS) was investigated to understand the element dependence of the charge breeding efficiency in an electron cyclotron resonance (ECR) charge breeder. The radioactive (111)In(1+) and (140)Xe(1+) ions (typical nonvolatile and volatile elements, respectively) were injected into the ECR charge breeder at the Tokai Radioactive Ion Accelerator Complex to breed their charge states. Their respective residual activities on the sidewall of the cylindrical plasma chamber of the source were measured after charge breeding as functions of the azimuthal angle and longitudinal position and two-dimensional distributions of ions lost during charge breeding in the ECRIS were obtained. These distributions had different azimuthal symmetries. The origins of these different azimuthal symmetries are qualitatively discussed by analyzing the differences and similarities in the observed wall-loss patterns. The implications for improving the charge breeding efficiencies of nonvolatile elements in ECR charge breeders are described. The similarities represent universal ion loss characteristics in an ECR charge breeder, which are different from the loss patterns of electrons on the ECRIS wall. 相似文献
70.
Sung Hoon Kim Ji Yeong Lee Shuichiro Hashi Kazushi Ishiyama 《Robotics and Autonomous Systems》2012,60(2):288-295
Magnetic micro-robots have been proposed for use in biomedical applications. These studies focus on locomotion control using a gradient, alternating, and rotating magnetic fields at the sub-micro scale. However, this study focuses on a basic mechanism of active locomotion for diagnostic robots. Furthermore, the digestive intestine in the human body has a complex path in which locomotion methods can become either swimming or walking according to the inner condition. Therefore, we propose a new simple mechanism for amphibious locomotion within a rotating magnetic field using the three-axis Helmholtz coil system. The proposed magnetic robot consists of NdFeB permanent spherical magnets, flexible silicone tubes, and legs. Successive changes of actuation of yaw and roll motions cause alternating and walking motions. Direction of movement is decided by rotating the direction of the magnetic field (clockwise or counter-clockwise). In addition, turning directions are decided by the plane of the rotating magnetic field. A magnetic torque between the rotating magnetic field and the magnetic moments produce a constant walking pattern similar to a trotting gait. In addition, an oscillatory motion of the flexible robot body can generate a thrust force in the liquid. Finally, through the various experiments, we evaluate the capability of the locomotion. 相似文献