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Wyszukujesz frazę "Okada, S." wg kryterium: Autor


Tytuł:
Effect of Polarity and Rise Time of Applied Pulsed Voltage on Streamer Discharge Phenomena
Autorzy:
Yoshinaga, K.
Okada, S.
Wang, D.
Namihira, T.
Katsuki, S.
Akiyama, H.
Tematy:
52.80.Hc
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1807907.pdf  Link otwiera się w nowym oknie
Opis:
Pulsed streamer discharges have been extensively used in many applications such as control of $NO_X$ and $SO_2$ from exhaust gases, treatment of dioxins, removal of volatile organic compounds, generation of ozone and laser excitation. An operation with a high-energy efficiency is necessary for practical applications. It is very important to know the propagation mechanism of streamer discharges in order to improve the energy efficiency of pulsed discharge systems. In this paper, the emission from pulsed streamer discharges in a coaxial electrode system in air at 0.1 MPa was observed using a high-speed gated intensified charge-coupled display camera. A concentric wire-cylinder electrodes configuration was used. Positive and negative pulsed voltages having a width of about 200 ns were applied to the central electrode. From the results, the streamer discharges were initiated at the inner electrode and terminated at the outer electrode. It is suggested that the propagation velocity of the streamer discharges is being influenced strongly by the rise time and the polarity of the pulsed voltage.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and evaluation of novel mri contrast agents of chemically modified GD-DTPA complexes with sugars
Autorzy:
Sugiyama, M.
Yamashita, M.
Yu, G.
Fujie, M.
Ogawa, K.
Ozaki, N.
Aoki, T.
Mizuno, S.
Okada, S.
Tachi, K.
Aoshima, K.
Sankar, U. R.
Kumar, B. S.
Takehara, Y.
Sakahara, H.
Tematy:
MRI contrast agent
Gd(III)-DTPA
tumor imaging
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:
https://bibliotekanauki.pl/articles/385252.pdf  Link otwiera się w nowym oknie
Opis:
MRI is one of medical diagnostic imaging technologies that can draw the cross section in the body. To obtain a clearer image, Gd complexes are often used as MRI contrast agents. Gd-DTPA (Gd-Diethylenetriaminepentaacetate, Magnevist registered trademark ) is used in particular as the MRI contrast agents. We prepared and evaluated novel MRI contrast agents that were chemically modified Gd-DTPA with sugars (represented as Gd-DTPA-Sugar) via hydrolysis route for providing specificity to target organs and tissues. Gd-DTPASugar complex showed an excellent potential for the MRI contrast agent (r1=31.2 s-1mM-1). Gd-DTPA-Sugar complexes alternatively prepared by shorter synthetic route without protection/ deprotection (hydrolysis) method showed inferior results (r1=6.3 and 8.1 s-1mM-1) to the hydlized product.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kaonic atoms measurements at the DA$\Phi$NE Collider
Autorzy:
Shi, H.
Niedźwiecki, Szymon
Guaraldo, C.
Baniahmad, A.
Berucci, C.
Miliucci, M.
Silarski, Michał
Skurzok, Magdalena
Widmann, E.
Sirghi, D.
Ghio, F.
Piscicchia, K.
Bragadireanu, M.
Zmeskal, J.
Okada, S.
Fabbietti, L.
Scordo, A.
Tatsuno, H.
Martona, J.
Bellotti, G.
Iliescu, M.
Curceanu, C.
Cargnelli, M.
Pietreanu, D.
Iwasaki, M.
Bazzi, M.
Spallone, A.
Bosnar, D.
Moskal, Paweł
Amirkhani, A.
Sirghi, F.
Fiorini, C.
Opis:
The DAFNE electron-positron collider of the Laboratori Nazionali di Frascati of INFN is a worldwide unique low-energy kaon source, which is being used to produce and to study kaonic atoms by the SIDDHARTA collaboration. The X-ray measurements of kaonic atoms play an important role for understanding the low-energy QCD in the strangeness sector. Significant achievements have been obtained by the SIDDHARTA experiment, among which: the most precise kaonic hydrogen measurement of the 1s level shift and width induced by the presence of the strong interaction; an upper limit of the X-ray yield for kaonic deuterium K-series; the accurate measurement of the 2p level shift and width of kaonic helium-4 and kaonic helium-3; yields of various light kaonic atoms transitions. Using the experience gained with SIDDHARTA experiment, the first kaonic deuterium measurement is in preparation in the framework of the SIDDHARTA-2 experiment with the goal to determine the antikaon-nucleon isospin dependent scattering lengths, which is possible only by combining the K-p and the upcoming K-d results. An overview of the experimental results of SIDDHARTA and an outlook to SIDDHARTA-2 experiments are given in this paper.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne

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