375 research outputs found

    On the tldes of the Seto Inland

    Get PDF
    We studied on the following elements of the tides in the Seto Inland Sea. (I) Meteorological tides observed at four tidal stations (Uno, Takamatsu, Matsuyama and Kure) during the recent five years, 1952-1956. (Appendix Table 1.) (2) The profiles of the tidal level along the east-westward section of the Sea in different seasons. Osaka, Kobe, Akashi, Takamatsu, Imabari, Hashihama, Mitsuhama and Dannoura were selected as the standard stations for the calculation of the sea level. (3) Harmonic and non-harmonic constants for the tidal stations located in the Sea. (4) The time difference and the ratio of the range of tide for the tidal stations in the Sea. I. Meteorological tides at the four stations were computed numerically with the following formula: Δh = Ht - (Ht-25 + Ht+25) / 2 Δh : Height of the meteorological tide. Ht : Observed height of tide at the time when the meteorological tide Δh occurred. Ht-25, Ht+25 : Observed heights of tide 25 hours before and after H, was observed, respectively. II. Simultaneous heights of tide at the 15 base stations (which are distributed between Osaka and Dannoura over a distance of about 260 nautical miles (Text-fig. I)) are shown in Text-figs. 2-1 to 2-8 for different seasons of the year. From these figures we can see the sectional configuration of the sea level in various seasons, and are enabled to predict the districts where local slope currents will occur. III. By taking advantage of the tidal currents, one can greatly reduce the time of navigation in traversing the Seto Inland Sea from the east to the west (or in the reverse direction). For example, as is shown in Text-figs. 3-1 to 3-3, a ship with a self-propelling speed of 6 knots and cruising from Osaka to Moji (about 260 nautical miles) can save about 7 hours by making the best use of tidal currents, as compared with the same ship navigating against tidal currents. IV. The latest values of harmonic constants for 142 stations are summarized in Appendix Table 2. Non-harmonic constants for these stations were calculated from the latest data of tidal observations and are summarized in the following charts: 1. Mean high water interval (Text-fig. 4-1) 2. Diurnal inequality (Text-fig. 4-2) 3. Mean tidal range (Text-fig. 4-3) 4. Spring range (Text-fig. 4-4) 5. Neap range (Text-fig. 4-5) 6. Spring rise (Text-fig. 4-6) 7. Neap rise (Text-fig. 4-7) V. In Appendix Table 3 we have shown the new time differences and ratios of the range of tide to be applied to the results of tidal observations at the 138 stations located in the Seto Inland Sea and Tosa Bay. In computing these values, we selected as standard stations those 20 stations whose tidal elements had been observed and published in the tide tables by the Meteorological Agency or by the Maritime Safety Agency

    Mitochondria and Endoplasmic Reticulum in the Denucleated Red Cells, with Special Reference to the Reticulum of Reticu-locyte

    Get PDF
    In 1955 SANO found mitochondria by the supravital stain with Janus green B in the basophilic stippled cells from the circulating blood of the lead intoxicated rabbitsl , and in 1956 by means of electronmicroscope VALLEJO-FREIRE, BRUNNER et al. found mitochondria in the reticulocytes2,3, and later at the end of 1956 BRAUNSTEINER et al. also succeeded in revealing mitochondria and the vesicular structure by electron microscope in the ultra thin section of young red cells4. We also have found the mitochondria and the endoplasmic reticulum in young red cells. It has been discussed long whether the reticulum of reticulocytes is a preexistent structure or an artifact. The fact that the mitochondria exist in the reticulocyte seems to support strongly the preexistence theory of the reticulum, substantia reticulo filamentosa. However, the fact that the reticulum has several characteristics different from the general mitochondria5,6 can not be ignored. In this paper we should like to demonstrate the photos of mitochondria and the endoplasmic reticulum in the denucleated red cells revealed by electron microscope comparing to the picture of reticuluocyte appeared by supravital stain.</p

    Critical behavior of the metallic triangular-lattice Heisenberg antiferromagnet PdCrO2

    Full text link
    We report physical properties of the conductive magnet PdCrO2 consisting of a layered structure with a triangular lattice of Cr3+ ions (S=3/2). We confirmed an antiferromagnetic transition at TN=37.5K by means of specific heat, electrical resistivity, magnetic susceptibility, and neutron scattering measurements. The critical behavior in the specific heat persists in an unusually wide temperature range above TN. This fact implies that spin correlations develop even at much higher temperature than TN. The observed sub-linear temperature dependence of the resistivity above TN is also attributed to the short-range correlations among the frustrated spins. While the critical exponent for the magnetization agrees reasonably with the prediction of the relevant model, that for the specific heat evaluated in the wide temperature range differs substantially from the prediction.Comment: 7 pages, 6 figure

    Feasibility study of a novel wireless localization technique using radiofrequency identification markers for small and deeply located lung lesions

    Get PDF
    Objectives: To evaluate the safety and efficacy of a novel wireless localization technique that uses radiofrequency identification markers for small and deep lung lesions. Methods: Preliminary use of the device was retrospectively evaluated in 2 Japanese centers. Under general anesthesia, a marker was placed as close as possible to the tumor via computed tomography-guided bronchoscopy in a hybrid operation theater. Surgeons located the marker without lung palpation using a detection probe the tone of which changed to indicate the marker-probe distance. Efficacy was defined as functional marker placement (bronchoscopy time and marker position) and deep margin distance. Results: Twelve markers were placed for 11 lesions (mean size, 6.8 ± 2.7 mm) located at a mean depth from the pleura of 11.4 ± 8.4 mm (range = 0-26.0 mm). Of 12 markers, 7 markers (58.3%) were placed within 10 mm from the lesion in 25.5 ± 14.4 minutes. For the 11 wedge resections, markers were placed at a mean distance of 6.7 mm (range, 0-13.0 mm) from the lesion and a mean distance of 14.4 mm (range, 3.0-42.0 mm) from the pleura. All markers were recovered without complications, and all tumors were resected with negative margins. For 5 lesions >10 mm deep to the pleura (mean depth, 18.9 ± 5.5 mm; range, 11.0-26.0 mm), the median depth of the surgical margin was 11.6 ± 2.1 mm (range, 9.0-14.0 mm). Conclusions: Radiofrequency identification marking was safe and precisely localized small lung lesions, including their depth
    corecore