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81.
We explain how to obtain the bandwidth and tunable range required for wavelength-division multiplexing communication systems and how to design tunable liquid-crystal Fabry-Perot interferometer filters. The main factors determining the performance are liquid-crystal loss, mirror loss, surface roughness, and parallelism, as well as mirror reflectivity and cavity gap. Experimental results closely agree with the designed performance. Temperature dependence, response time, acceptable input power, and reliability are investigated. Pigtailed polarization-independent filter modules with a Peltier controller are made and are shown to have low polarization dependence (<0.3 dB), low driving voltage (<15 V), and compact size, as well as a narrow bandwidth (0.3 nm), high finesse of 189, and large tunable range (50 nm) 相似文献
82.
Y Tokano S Endo F Hayashi S Harada S Kobayashi H Tsuda Y Takasaki Y Kyogoku Y Arata K Okumura H Hashimoto S Hirose 《Canadian Metallurgical Quarterly》1997,24(2):275-281
OBJECTIVE: The ratios of immunoglobulin (Ig) G1 and IgG2 in patients with rheumatoid arthritis (RA) were examined by nuclear magnetic resonance (NMR) and the results were compared to data obtained by ELISA. METHODS: The IgG of 11 patients with RA were prepared with a DE-52 column and the specific signals for IgG1 and IgG2 were measured by NMR. The ratios of IgG1 and IgG2 were determined by the intensity of this signal. The samples were also measured by ELISA. RESULTS: The ratios of IgG2 in patients with RA measured by NMR were increased significantly compared to controls. However, there were no significant differences in the data determined by ELISA. Thus, a discrepancy exists in the analysis of IgG2 ratios between NMR and ELISA methods. CONCLUSION: There was a discrepancy in the IgG2 ratios of patients with RA between NMR and ELISA methods, and we attribute this to a conformational difference in IgG2 in patients with RA. 相似文献
83.
We report two cases of acromegaly due to pituitary adenoma without any other endocrinopathy in a family. The patients had high plasma GH and were improved by transsphenoidal adenomectomy. Acromegaly is usually a clinical syndrome of sporadic nonfamilial occurrence. The familial occurrence of acromegaly not associated with multiple endocrine neoplasia is very rare. Our patients are unlikely to be associated with the multiple endocrine neoplasia type 1 syndrome. Here we describe two patients with acromegaly, a father and his daughter, and review familial cases reported. 相似文献
84.
T Ikeya M Tsuda H Hara S Koyama S Sugiyama T Misaki 《Canadian Metallurgical Quarterly》1997,50(12):1055-1058
62-year-old woman admitted our hospital with pain of left upper extremity from the left chest and dysphasia. Chest X-ray showed the huge mass shadow in the left lung field. Diabetes mellitus and inflammatory reaction such as high fervor, leukocytosis, CRP and ESR accentuation were recognized. Conservative therapy was done at first, but mass shadow on X-ray increased, and swelling appeared from the neck to the left lateral chest wall. And the same site appeared like subcutaneous emphysema. Computed Tomography showed mass shadow which was enlarged and spread in lung parenchyma and left chest wall with bubble image. Incision and open drainage was performed for the left chest wall but origin bacteria was detected in neither anaerobic nor aerobic culture of pus. Inflammation and mass shadow of left upper lung field have decreased gradually. The patient discharged without bronchoalveolar fistula. Abscess extending from the neck or chest wall with diabetes mellitus is very rare. 相似文献
85.
Masaaki Yano Hideki Tsuda Takeo Imai Yutaka Ogawa Motoo Ohkochi 《Journal of the Institute of Brewing》2008,114(3):230-238
Free amino nitrogen (FAN) and other low‐molecular‐weight nitrogen compounds (LNC) are highly important as nutrients for yeast. Many different types of low‐malt beer exist around the world, some of which are produced with barley as an adjunct. In these cases, inhibitors contained in barley are known to influence the amount of LNC in wort. Accordingly, it is important to investigate which proteinase class is key in producing these compounds. By investigating the relationship between the FAN contained in wort produced from malt and barley (barley adjunct wort) and malt proteinase activity, it was found that cysteine proteinase and 1,10‐orthophenanthroline (O‐Phen)‐inhibitable metallo proteinases had a significant correlation to the barley adjunct wort FAN levels. In addition, the relationship between malting conditions and these proteinase activities was investigated and the conditions defined for maximal production of proteinases as follows: steeping degree, 50%; germination temperature, 12°C; germination days, 6 days; water spray, 3 times and concentration of gibberellic acid, 10 mg/kg (barley). 相似文献
86.
87.
Osteoclast differentiation factor is a ligand for osteoprotegerin/osteoclastogenesis-inhibitory factor and is identical to TRANCE/RANKL 总被引:3,自引:0,他引:3
H Yasuda N Shima N Nakagawa K Yamaguchi M Kinosaki S Mochizuki A Tomoyasu K Yano M Goto A Murakami E Tsuda T Morinaga K Higashio N Udagawa N Takahashi T Suda 《Canadian Metallurgical Quarterly》1998,95(7):3597-3602
Osteoclasts, the multinucleated cells that resorb bone, develop from hematopoietic cells of monocyte/macrophage lineage. Osteoclast-like cells (OCLs) are formed by coculturing spleen cells with osteoblasts or bone marrow stromal cells in the presence of bone-resorbing factors. The cell-to-cell interaction between osteoblasts/stromal cells and osteoclast progenitors is essential for OCL formation. Recently, we purified and molecularly cloned osteoclastogenesis-inhibitory factor (OCIF), which was identical to osteoprotegerin (OPG). OPG/OCIF is a secreted member of the tumor necrosis factor receptor family and inhibits osteoclastogenesis by interrupting the cell-to-cell interaction. Here we report the expression cloning of a ligand for OPG/OCIF from a complementary DNA library of mouse stromal cells. The protein was found to be a member of the membrane-associated tumor necrosis factor ligand family and induced OCL formation from osteoclast progenitors. A genetically engineered soluble form containing the extracellular domain of the protein induced OCL formation from spleen cells in the absence of osteoblasts/stromal cells. OPG/OCIF abolished the OCL formation induced by the protein. Expression of its gene in osteoblasts/stromal cells was up-regulated by bone-resorbing factors. We conclude that the membrane-bound protein is osteoclast differentiation factor (ODF), a long-sought ligand mediating an essential signal to osteoclast progenitors for their differentiation into osteoclasts. ODF was found to be identical to TRANCE/RANKL, which enhances T-cell growth and dendritic-cell function. ODF seems to be an important regulator in not only osteoclastogenesis but also immune system. 相似文献
88.
V Krutovskikh M Asamoto N Takasuka M Murakoshi H Nishino H Tsuda 《Canadian Metallurgical Quarterly》1997,88(12):1121-1124
In order to examine the relevance of alteration of gap-junctional intercellular communication (GJIC) to chemopreventive activity against carcinogenesis, the effects of alpha- and beta-carotene as well as lycopene, typical chemopreventive carotenoids, on cell coupling via gap junctions in rat liver in vivo were studied using a direct functional dye-transfer technique. We found that all three test compounds given at a dose of 50 mg/kg-body weight (b.w.) daily, 5 times by gavage, inhibited GJIC, while similar treatment with 5 mg/kg b.w. caused enhancement, especially in the beta-carotene- and lycopene-treated groups. At the dose level of 0.5 mg/kg b.w., the three compounds had no effect. The findings show that all three agents differentially modulate GJIC depending on the dose, with beneficial effects on cell communication only detected at the one dose. The result suggests that determination of the dose of chemicals to be used is crucial for human intervention studies. 相似文献
89.
Tsuda T. Hattori S. Yatsuboshi R. Yamauchi K. 《Communications, IEEE Transactions on》1979,27(7):1112-1117
A new subscriber communication system and its design philosophy are described. In addition to telephone communication, the system is simultaneously able to offer data communication, still picture communication, etc. The system is composed of a packetized voice/data terminal, a multi-service switching equipment and the digital subscriber loop connecting between them. The system utilizes the existing subscriber line efficiently and is entirely suitable for coming telephone and data public digital network. 64 kbit/s PCM coded voice conversation and 48 kbit/s data communication were achieved simultaneously over 96 kbit/s digital subscriber line which was spanned up to 2 km. 相似文献
90.
Kazuo Kadowaki Takashi Mochiku Hiroyuki Takeya Kazuto Hirata 《Journal of Superconductivity and Novel Magnetism》1995,8(4):461-464
The dc current-voltage (I-V) relation along the c-axis of single crystalline Bi2Sr2CaCu2O8+δ has been measured in magnetic fields parallel and perpendicular to the c-axis. In zero field a clear and sharp jump with large hysteresis in theI-V curve was observed, indicative of the dc-Josephson effect. In magnetic field below a characteristic fieldB *≈0.4 T (at T=0 K) parallel to the c-axis the magnetic field suppresses the hysteresis and reduces the critical currentI c drastically, whereas aboveB * theI-V curve becomes broad and featureless behavior. The characteristic field scaleB * can be interpreted as an energy scale of the Josephson coupling between superconducting layers in Bi2Sr2CaCu2O8+δ and is argued with emphasis on the correlation length of pancake vortices in this system. 相似文献