3,693 results on '"Kawasaki, K."'
Search Results
2. Operation characteristics of a disk-type rotating detonation engine
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Ishii, K., Ohno, K., Kawana, H., Kawasaki, K., Hayashi, A. K., and Tsuboi, N.
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- 2023
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3. Magnetron sputter deposition of ultrathick boron carbide coatings on spherical substrates for inertial confinement fusion
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Merlo, J.B., Forien, J.B., Hayes, S.M., Kawasaki, K., Shin, S.J., Sohngen, L.R., Taylor, G.V., and Kucheyev, S.O.
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- 2024
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4. An analysis of binary microlensing event OGLE-2015-BLG-0060
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Tsapras, Y., Cassan, A., Ranc, C., Bachelet, E., Street, R., Udalski, A., Hundertmark, M., Bozza, V., Beaulieu, J. P., Marquette, J. B., Euteneuer, E., team, The RoboNet, Bramich, D. M., Dominik, M., Jaimes, R. Figuera, Horne, K., Mao, S., Menzies, J., Schmidt, R., Snodgrass, C., Steele, I. A., Wambsganss, J., collaboration, The OGLE, Mróz, P., Szymański, M. K., Soszyński, I., Skowron, J., Pietrukowicz, P., Kozłowski, S., Poleski, R., Ulaczyk, K., Pawlak, M., collaboration, The MiNDSTEp, Jørgensen, U. G., Skottfelt, J., Popovas, A., Ciceri, S., Korhonen, H., Kuffmeier, M., Evans, D. F., Peixinho, N., Hinse, T. C., Burgdorf, M. J., Southworth, J., Tronsgaard, R., Kerins, E., Andersen, M. I., Rahvar, S., Wang, Y., Wertz, O., Rabus, M., Novati, S. Calchi, D'Ago, G., Scarpetta, G., Mancini, L., collaboration, The MOA, Abe, F., Asakura, Y., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Muraki, Y., Miyazaki, S., Nagakane, M., Ohnishi, K., Rattenbury, N., Saito, To., Sharan, A., Shibai, H., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., and Yonehara, A.
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous parts of the light curve was achieved by automated follow-up observations from the robotic telescopes of the Las Cumbres Observatory. We show that, for the first time, all main features of an anomalous microlensing event are well covered by follow-up data, allowing us to estimate the physical parameters of the lens. The strong detection of second-order effects in the event light curve necessitates the inclusion of longer-baseline survey data in order to constrain the parallax vector. We find that the event was most likely caused by a stellar binary-lens with masses $M_{\star1} = 0.87 \pm 0.12 M_{\odot}$ and $M_{\star2} = 0.77 \pm 0.11 M_{\odot}$. The distance to the lensing system is 6.41 $\pm 0.14$ kpc and the projected separation between the two components is 13.85 $\pm 0.16$ AU. Alternative interpretations are also considered., Comment: 13 pages, 5 figures, Published in MNRAS
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- 2019
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5. Fabrication of nanocrystalline diamond capsules by hot-filament chemical vapor deposition for direct-drive inertial confinement fusion experiments
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Kawasaki, K., Yamada, H., Nagatomo, H., Hironaka, Y., Yamanoi, K., Tanaka, D., Idesaka, T., Mokuno, Y., Chayahara, A., Shimaoka, T., Mima, K., Somekawa, T., Tsukamoto, M., Sato, Y., Iwamoto, A., and Shigemori, K.
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- 2023
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6. First assessment of the binary lens OGLE-2015_BLG-0232
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Bachelet, E., Bozza, V., Han, C., Udalski, A., Bond, I. A., Beaulieu, J. -P., Street, R. A., Kim, J. -I, Bramich, D. M., Cassan, A., Dominik, M., Jaimes, R. Figuera, Horne, K., Hundertmark, M., Mao, S., Menzies, J., Ranc, C., Schmidt, R., Snodgrass, C., Steele, I. A., Tsapras, Y., Wambsganss, J., Mróz, P., Soszyński, I., Szymański, M. K., Skowron, J., Pietrukowicz, P., Kozłowski, S., Poleski, R., Ulaczyk, K., Pawlak, M., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Kondo, I., Koshimoto, N., Li, M. Cheung Alex, Matsubara, Y., Muraki, Y., Miyazaki, S., Nagakane, M., Rattenbury, N. J., Suematsu, H., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., and Yonehara, A.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We present an analysis of the microlensing event OGLE-2015-BLG-0232. This event is challenging to characterize for two reasons. First, the light curve is not well sampled during the caustic crossing due to the proximity of the full Moon impacting the photometry quality. Moreover, the source brightness is difficult to estimate because this event is blended with a nearby K dwarf star. We found that the light curve deviations are likely due to a close brown dwarf companion (i.e., s = 0.55 and q = 0.06), but the exact nature of the lens is still unknown. We finally discuss the potential of follow-up observations to estimate the lens mass and distance in the future., Comment: Accepted in ApJ
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- 2018
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7. Two new free-floating or wide-orbit planets from microlensing
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Mroz, P., Udalski, A., Bennett, D. P., Ryu, Y. -H., Sumi, T., Shvartzvald, Y., Skowron, J., Poleski, R., Pietrukowicz, P., Kozlowski, S., Szymanski, M. K., Wyrzykowski, L., Soszynski, I., Ulaczyk, K., Rybicki, K., Iwanek, P., Albrow, M. D., Chung, S. -J., Gould, A., Han, C., Hwang, K. -H., Jung, Y. K., Shin, I. -G., Yee, J. C., Zang, W., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Abe, F., Barry, R., Bhattacharya, A., Bond, I. A., Donachie, M., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Kondo, I., Koshimoto, N., Li, M. C. A., Matsubara, Y., Muraki, Y., Miyazaki, S., Nagakane, M., Ranc, C., Rattenbury, N. J., Suematsu, H., Sullivan, D. J., Suzuki, D., Tristram, P. J., Yonehara, A., Maoz, D., Kaspi, S., and Friedmann, M.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
Planet formation theories predict the existence of free-floating planets that have been ejected from their parent systems. Although they emit little or no light, they can be detected during gravitational microlensing events. Microlensing events caused by rogue planets are characterized by very short timescales $t_{\rm E}$ (typically below two days) and small angular Einstein radii $\theta_{\rm E}$ (up to several uas). Here we present the discovery and characterization of two ultra-short microlensing events identified in data from the Optical Gravitational Lensing Experiment (OGLE) survey, which may have been caused by free-floating or wide-orbit planets. OGLE-2012-BLG-1323 is one of the shortest events discovered thus far ($t_{\rm E}$=0.155 +/- 0.005 d, $\theta_{\rm E}$=2.37 +/- 0.10 uas) and was caused by an Earth-mass object in the Galactic disk or a Neptune-mass planet in the Galactic bulge. OGLE-2017-BLG-0560 ($t_{\rm E}$=0.905 +/- 0.005 d, $\theta_{\rm E}$=38.7 +/- 1.6 uas) was caused by a Jupiter-mass planet in the Galactic disk or a brown dwarf in the bulge. We rule out stellar companions up to a distance of 6.0 and 3.9 au, respectively. We suggest that the lensing objects, whether located on very wide orbits or free-floating, may originate from the same physical mechanism. Although the sample of ultrashort microlensing events is small, these detections are consistent with low-mass wide-orbit or unbound planets being more common than stars in the Milky Way., Comment: accepted for publication in A&A, minor changes
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- 2018
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8. Defatted black soldier fly larvae meal in lactating sow and pre-weaning piglet diets: impacts on growth performance, fecal microbiota, and metabolic pathways
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Zhao, J., primary, Sato, M., additional, Takao, N., additional, Ban, T., additional, Tamamaki, K., additional, Kagami, M., additional, Yano, K., additional, and Kawasaki, K., additional
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- 2024
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9. OGLE-2017-BLG-0039: Microlensing Event with Light from the Lens Identified from Mass Measurement
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Han, C., Jung, Y. K., Udalski, A., Bond, I., Bozza, V., Albrow, M. D., Chung, S. -J., Gould, A., Hwang, K. -H., Kim, D., Lee, C. -U., Kim, H. -W., Ryu, Y. -H., Shin, I. -G., Yee, J. C., Shvartzvald, Y., Cha, S. -M., Kim, S. -L., Kim, D. -J., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Szymański, M. K., Mróz, P., Skowron, J., Poleski, R., Soszyński, I., Kozłowski, S., Pietrukowicz, P., Ulaczyk, K., Pawlak, M., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Matsubara, Y., Miyazaki, S., Munakata, H., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N., Saito, T., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., and Yonehara, A.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
We present the analysis of the caustic-crossing binary microlensing event OGLE-2017-BLG-0039. Thanks to the very long duration of the event, with an event time scale $t_{\rm E}\sim 130$ days, the microlens parallax is precisely measured despite its small value of $\pie\sim 0.06$. The analysis of the well-resolved caustic crossings during both the source star's entrance and exit of the caustic yields the angular Einstein radius $\thetae\sim 0.6$~mas. The measured $\pie$ and $\thetae$ indicate that the lens is a binary composed of two stars with masses $\sim 1.0~M_\odot$ and $\sim 0.15~M_\odot$, and it is located at a distance of $\sim 6$ kpc. From the color and brightness of the lens estimated from the determined lens mass and distance, it is expected that $\sim 2/3$ of the $I$-band blended flux comes from the lens. Therefore, the event is a rare case of a bright lens event for which high-resolution follow-up observations can confirm the nature of the lens., Comment: 8 pages, 6 figures, 5 tables
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- 2018
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10. A fast quantum interface between different spin qubit encodings
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Noiri, A., Nakajima, T., Yoneda, J., Delbecq, M. R., Stano, P., Otsuka, T., Takeda, K., Amaha, S., Allison, G., Kawasaki, K., Kojima, Y., Ludwig, A., Wieck, A. D., Loss, D., and Tarucha, S.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Single-spin qubits in semiconductor quantum dots proposed by Loss and DiVincenzo (LD qubits) hold promise for universal quantum computation with demonstrations of a high single-qubit gate fidelity above 99.9 % and two-qubit gates in conjunction with a long coherence time. However, initialization and readout of a qubit is orders of magnitude slower than control, which is detrimental for implementing measurement-based protocols such as error-correcting codes. In contrast, a singlet-triplet (ST) qubit, encoded in a two-spin subspace, has the virtue of fast readout with high fidelity and tunable coupling to the electric field. Here, we present a hybrid system which benefits from the different advantages of these two distinct spin-qubit implementations. A quantum interface between the two codes is realized by electrically tunable inter-qubit exchange coupling. We demonstrate a controlled-phase (CPHASE) gate that acts within 5.5 ns, much faster than the measured dephasing time of 211 ns. The presented hybrid architecture will be useful to settle remaining key problems with building scalable spin-based quantum computers.
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- 2018
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11. MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary
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Miyazaki, S., Sumi, T., Bennett, D. P., Gould, A., Udalski, A., Bond, I. A., Koshimoto, N., Nagakane, M., Rattenbury, N., Abe, F., Bhattacharya, A., Barry, R., Donachie, M., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Li, M. C., Ling, C. H., Matsubara, Y., Matsuo, T., Muraki, Y., Ohnishi, K., Ranc, C., Saito, T., Sharan, A., Shibai, H., Suematsu, H., Suzuki, D., Sullivan, D. J., Tristram, P. J., Yamada, T., Yonehara, A., owski, S., Mr'oz, P., Pawlak, M., Poleski, R., Pietrukowicz, P., Skowron, J., Soszy'nski, I., Szyma'nski, M. K., Ulaczyk, K., Albrow, M. D., Chung, S. -J., Han, C., Jung, Y. K., Hwang, K. -H., Ryu, Y. -H., Shin, I. -G., Shvartzvald, Y., Yee, J. C., Zang, W., Zhu, W., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., and Pogge, R. W.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the discovery and the analysis of the short timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low mass host, around the brown dwarf/planetary mass boundary, or a brown dwarf binary. We found two competing models that explain the observed light curves with companion/host mass ratios of q~0.01 and ~0.17, respectively. From the measurement of finite source effects in the best-fit planetary model, we find a relatively small angular Einstein radius of theta_E ~ 0.03 mas which favors a low mass lens. We conduct a Bayesian analysis to obtain the probability distribution of the lens properties. The results for the planetary models strongly depend on the minimum mass, M_min, in the assumed mass function. In summary, there are two solutions of the lens system: (1) a brown dwarf/planetary mass boundary object orbited by a super-Neptune (the planetary model with M_min=0.001 M_sun) and (2) a brown dwarf binary (the binary model). If the planetary models is correct, this system can be one of a new class of planetary system, having a low host mass and also a planetary mass ratio (q <0.03) between the host and its companion. The discovery of the event is important for the study of planetary formation in very low mass objects. In addition, it is important to consider all viable solutions in these kinds of ambiguous events in order for the future comprehensive statistical analyses of planetary/binary microlensing events., Comment: 17 pages, 7 figures, Accepted for publication in AJ
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- 2018
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12. OGLE-2017-BLG-0482Lb: A Microlensing Super-Earth Orbiting a Low-mass Host Star
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Han, C., Hirao, Y., Udalski, A., Lee, C. -U., Bozza, V., Gould, A., Abe, F., Barry, R., Bond, I. A., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Matsubara, Y., Miyazaki, S., Munakata, H., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N., Saito, T., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., Yonehara, A., Mróz, P., Poleski, R., Kozłowski, S., Soszyński, I., Pietrukowicz, P., Skowron, J., Szymańsk, M. K., Ulaczyk, K., Pawlak, M., Rybicki, K., Iwanek, P., Albrow, M. D., Chung, S. -J., Hwang, K. -H., Jung, Y. K., Kim, D., Kim, W. -T., Kim, H. -W., Ryu, Y. -H., Shin, I. -G., Shvartzvald, Y., Yee, J. C., Zhu, W., Cha, S. -M., Kim, S. -L., Kim, D. -J., Lee, D. -J., Lee, Y., Park, B. -G., and Pogge, R. W.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the discovery of a planetary system in which a super-earth orbits a late M-dwarf host. The planetary system was found from the analysis of the microlensing event OGLE-2017-BLG-0482, wherein the planet signal appears as a short-term anomaly to the smooth lensing light curve produced by the host. Despite its weak signal and short duration, the planetary signal was firmly detected from the dense and continuous coverage by three microlensing surveys. We find a planet/host mass ratio of $q\sim 1.4\times 10^{-4}$. We measure the microlens parallax $\pi_{\rm E}$ from the long-term deviation in the observed lensing light curve, but the angular Einstein radius $\theta_{\rm E}$ cannot be measured because the source trajectory did not cross the planet-induced caustic. Using the measured event timescale and the microlens parallax, we find that the masses of the planet and the host are $M_{\rm p}=9.0_{-4.5}^{+9.0}\ M_\oplus$ and $M_{\rm host}=0.20_{-0.10}^{+0.20}\ M_\odot$, respectively, and the projected separation between them is $a_\perp=1.8_{-0.7}^{+0.6}$ au. The estimated distance to the lens is $D_{\rm L}=5.8_{-2.1}^{+1.8}$ kpc. The discovery of the planetary system demonstrates that microlensing provides an important method to detect low-mass planets orbiting low-mass stars., Comment: 10 pages, 10 figures, 2 tables
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- 2018
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13. Spitzer Microlensing Parallax for OGLE-2016-BLG-1067: a sub-Jupiter Orbiting an M-dwarf in the Disk
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Novati, S. Calchi, Suzuki, D., Udalski, A., Gould, A., Shvartzvald, Y., Bozza, V., Bennett, D. P., Beichman, C., Bryden, G., Carey, S., Gaudi, B. S., Henderson, C. B., Yee, J. C., Zhu, W., Abe, F., Asakura, Y., Barry, R., Bhattacharya, A., Bond, I. A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N. J., Saito, To., Sharan, A., Sullivan, D. J., Sumi, T., Tristram, P. J., Yamada, T., Yonehara, A., Mróz, P., Poleski, R., Skowron, J., Szymański, M. K., Soszyński, I., Kozłowski, S., Pietrukowicz, P., Ulaczyk, K., Pawlak, M., Albrow, M. D., Chung, S. -J., Han, C., Hwang, K. -H., Jung, Y. K., Ryu, Y. -H., Shin, I. -G., Zang, W., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., and Pogge, R. W.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the discovery of a sub-Jupiter mass planet orbiting beyond the snow line of an M-dwarf most likely in the Galactic disk as part of the joint Spitzer and ground-based monitoring of microlensing planetary anomalies toward the Galactic bulge. The microlensing parameters are strongly constrained by the light curve modeling and in particular by the Spitzer-based measurement of the microlens parallax, $\pi_\mathrm{E}$. However, in contrast to many planetary microlensing events, there are no caustic crossings, so the angular Einstein radius, $\theta_\mathrm{E}$ has only an upper limit based on the light curve modeling alone. Additionally, the analysis leads us to identify 8 degenerate configurations: the four-fold microlensing parallax degeneracy being doubled by a degeneracy in the caustic structure present at the level of the ground-based solutions. To pinpoint the physical parameters, and at the same time to break the parallax degeneracy, we make use of a series of arguments: the $\chi^2$ hierarchy, the Rich argument, and a prior Galactic model. The preferred configuration is for a host at $D_L=3.73_{-0.67}^{+0.66}~\mathrm{kpc}$ with mass $M_\mathrm{L}=0.30_{-0.12}^{+0.15}~\mathrm{M_\odot}$, orbited by a Saturn-like planet with $M_\mathrm{planet}=0.43_{-0.17}^{+0.21}~\mathrm{M_\mathrm{Jup}}$ at projected separation $a_\perp = 1.70_{-0.39}^{+0.38}~\mathrm{au}$, about 2.1 times beyond the system snow line. Therefore, it adds to the growing population of sub-Jupiter planets orbiting near or beyond the snow line of M-dwarfs discovered by microlensing. Based on the rules of the real-time protocol for the selection of events to be followed up with Spitzer, this planet will not enter the sample for measuring the Galactic distribution of planets., Comment: Submitted to AAS Journals
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- 2018
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14. OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-Peak Gravitational Microlensing Event
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Udalski, A., Han, C., Bozza, V., Gould, A., Bond, I. A., Mróz, P., Skowron, J., Wyrzykowski, Ł., Szymański, M. K., Soszyński, I., Ulaczyk, K., Poleski, R., Pietrukowicz, P., Kozłowski, S., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Munakata, H., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N., Saito, T., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., Yonehara, A., Bachelet, E., Bramich, D. M., DÁgo, G., Dominik, M., Jaimes, R. Figuera, Horne, K., Hundertmark, M., Kains, N., Menzies, J., Schmidt, R., Snodgrass, C., Steele, I. A., Wambsganss, J., Pogge, R. W., Jung, Y. K., Shin, I. -G., Yee, J. C., Kim, W. -T., Beichman, C., Carey, S., Novati, S. Calchi, and Zhu, W.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
We present the analysis of the binary-microlensing event OGLE-2014-BLG-0289. The event light curve exhibits very unusual five peaks where four peaks were produced by caustic crossings and the other peak was produced by a cusp approach. It is found that the quintuple-peak features of the light curve provide tight constraints on the source trajectory, enabling us to precisely and accurately measure the microlensing parallax $\pi_{\rm E}$. Furthermore, the three resolved caustics allow us to measure the angular Einstein radius $\thetae$. From the combination of $\pi_{\rm E}$ and $\thetae$, the physical lens parameters are uniquely determined. It is found that the lens is a binary composed of two M dwarfs with masses $M_1 = 0.52 \pm 0.04\ M_\odot$ and $M_2=0.42 \pm 0.03\ M_\odot$ separated in projection by $a_\perp = 6.4 \pm 0.5$ au. The lens is located in the disk with a distance of $D_{\rm L} = 3.3 \pm 0.3$~kpc. It turns out that the reason for the absence of a lensing signal in the {\it Spitzer} data is that the time of observation corresponds to the flat region of the light curve., Comment: 10 pages, 7 figures
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- 2018
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15. OGLE-2015-BLG-1459L: The Challenges of Exo-Moon Microlensing
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Hwang, K. -H., Udalski, A., Bond, I. A., Albrow, M. D., Chung, S. -J., Gould, A., Han, C., Jung, Y. K., Ryu, Y. -H., Shin, I. -G., Yee, J. C., Zhu, W., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Pawlak, M., Poleski, R., Szymański, M. K., Skowron, J., Soszyński, I., Mróz, P., Kozłowski, S., Pietrukowicz, P., Ulaczyk, K., Abe, F., Asakura, Y., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N. J., Saito, To., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., and Yonehara, A.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We show that dense OGLE and KMTNet $I$-band survey data require four bodies (sources plus lenses) to explain the microlensing light curve of OGLE-2015-BLG-1459. However, these can equally well consist of three lenses and one source (3L1S), two lenses and two sources (2L2S) or one lens and three sources (1L3S). In the 3L1S and 2L2S interpretations, the host is a brown dwarf and the dominant companion is a Neptune-class planet, with the third body (in the 3L1S case) being a Mars-class object that could have been a moon of the planet. In the 1L3S solution, the light curve anomalies are explained by a tight (five stellar radii) low-luminosity binary source that is offset from the principal source of the event by $\sim 0.17\,\au$. These degeneracies are resolved in favor of the 1L3S solution by color effects derived from comparison to MOA data, which are taken in a slightly different ($R/I$) passband. To enable current and future ($WFIRST$) surveys to routinely characterize exomoons and distinguish among such exotic systems requires an observing strategy that includes both a cadence faster than 9 min$^{-1}$ and observations in a second band on a similar timescale., Comment: 29 pages, 8 figures, accepted for publication in AJ
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- 2017
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16. OGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundary
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Ryu, Y. -H., Yee, J. C., Udalski, A., Bond, I. A., Shvartzvald, Y., Zang, W., Jaimes, R. Figuera, Jorgensen, U. G., Zhu, W., Huang, C. X., Jung, Y. K., Albrow, M. D., Chung, S. -J., Gould, A., Han, C., Hwang, K. -H., Shin, I. -G., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Novati, S. Calchi, Carey, S., Henderson, C. B., Beichman, C., Gaudi, B. S., Mróz, P., Poleski, R., Skowron, J., Szymanski, M. K., Soszynski, I., Kozlowski, S., Pietrukowicz, P., Ulaczyk, K., Pawlak, M., Abe, F., Asakura, Y., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Rattenbury, N. J., Saito, To., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yamada, T., Yonehara, A., Bryden, G., Howell, S. B., Jacklin, S., Penny, M. T., Mao, S., Fouque, Pascal, Wang, T., Street, R. A., Tsapras, Y., Hundertmark, M., Bachelet, E., Dominik, M., Li, Z., Cross, S., Cassan, A., Horne, K., Schmidt, R., Wambsganss, J., Ment, S. K., Maoz, D., Snodgrass, C., Steele, I. A., Bozza, V., Burgdorf, M. J., Ciceri, S., D'Ago, G., Evans, D. F., Hinse, T. C., Kerins, E., Kokotanekova, R., Longa, P., MacKenzie, J., Popovas, A., Rabus, M., Rahvar, S., Sejadian, S., Skottfelt, J., Southworth, J., and von Essen, C.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object. The planet's mass M_p= 13.4+-0.9 M_J places it right at the deuterium burning limit, i.e., the conventional boundary between "planets" and "brown dwarfs". Its existence raises the question of whether such objects are really "planets" (formed within the disks of their hosts) or "failed stars" (low mass objects formed by gas fragmentation). This question may ultimately be addressed by comparing disk and bulge/bar planets, which is a goal of the Spitzer microlens program. The host is a G dwarf M_host = 0.89+-0.07 M_sun and the planet has a semi-major axis a~2.0 AU. We use Kepler K2 Campaign 9 microlensing data to break the lens-mass degeneracy that generically impacts parallax solutions from Earth-Spitzer observations alone, which is the first successful application of this approach. The microlensing data, derived primarily from near-continuous, ultra-dense survey observations from OGLE, MOA, and three KMTNet telescopes, contain more orbital information than for any previous microlensing planet, but not quite enough to accurately specify the full orbit. However, these data do permit the first rigorous test of microlensing orbital-motion measurements, which are typically derived from data taken over <1% of an orbital period., Comment: 63 pages, 13 figures, 7 tables, AJ, in press
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- 2017
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17. An Isolated Microlens Observed from K2, Spitzer and Earth
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Zhu, Wei, Udalski, A., Huang, C., Novati, S. Calchi, Sumi, T., Poleski, R., Skowron, J., Mroz, P., Szymanski, M. K., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Ulaczyk, K., Pawlak, M., Beichman, C, Bryden, G., Carey, S., Gaudi, B. S., Gould, A., Henderson, C. B., Shvartzvald, Y., Yee, J. C., Bond, I. A., Bennett, D. P., Suzuki, D., Rattenbury, N. J., Koshimoto, N., Abe, F., Asakura, Y., Barry, R. K., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Munakata, H., Muraki, Y., Nagakane, M., Ohnishi, K., Ranc, C., Saito, To., Sharan, A., Sullivan, D. J., Tristram, P. J., Yamada, T., and Yonehara, A.
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
We present the result of microlensing event MOA-2016-BLG-290, which received observations from the two-wheel Kepler (K2), Spitzer, as well as ground-based observatories. A joint analysis of data from K2 and the ground leads to two degenerate solutions of the lens mass and distance. This degeneracy is effectively broken once the (partial) Spitzer light curve is included. Altogether, the lens is found to be an extremely low-mass star located in the Galactic bulge. MOA-2016-BLG-290 is the first microlensing event for which we have signals from three well-separated ($\sim1$ AU) locations. It demonstrates the power of two-satellite microlensing experiment in reducing the ambiguity of lens properties, as pointed out independently by S. Refsdal and A. Gould several decades ago., Comment: 8 pages, 4 figures, 1 table; submitted to ApJ Letters
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- 2017
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18. Ground-based parallax confirmed by Spitzer: binary microlensing event MOA-2015-BLG-020
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Wang, Tianshu, Zhu, Wei, Mao, Shude, Bond, I. A., Gould, A., Udalski, A., Sumi, T., Bozza, V., Ranc, C., Cassan, A., Yee, J. C., Han, C., Abe, F., Asakura, Y., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ohnishi, K., Rattenbury, N., Saito, To., Sharan, A., Shibai, H., Sullivan, D. J., Suzuki, D., Tristram, P. J., Yamada, T., Yonehara, A., Pawlak, M., Pietrukowicz, P., Poleski, R., Skowron, J., Soszynski, I., KozLowski, S., Mroz, P., Ulaczyk, K., Szymanski, M. K., Beichman, C., Bryden, G., Novati, S. Calchi, Carey, S., Fausnaugh, M., Gaudi, B. S., Henderson, C. B., Shvartzvald, Y., Wibking, B., Albrow, M. D., Chung, S. -J., Hwang, K. -H., Jung, Y. K., Ryu, Y. -H., Shin, I. -G., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Yee, Y., Park, B. -G., Pogge, R. W., Street, R. A., Tsapras, Y., Hundertmark, M., Bachelet, E., Dominik, M., Horne, K., Jaimes, R. Figuera, Wambsganss, J., Bramich, D. M., Schmidt, R., Snodgrass, C., Steele, I. A., and Menzies, J.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
We present the analysis of the binary gravitational microlensing event MOA-2015-BLG-020. The event has a fairly long timescale (about 63 days) and thus the light curve deviates significantly from the lensing model that is based on the rectilinear lens-source relative motion. This enables us to measure the microlensing parallax through the annual parallax effect. The microlensing parallax parameters constrained by the ground-based data are confirmed by the Spitzer observations through the satellite parallax method. By additionally measuring the angular Einstein radius from the analysis of the resolved caustic crossing, the physical parameters of the lens are determined. It is found that the binary lens is composed of two dwarf stars with masses $M_1 = 0.606 \pm 0.028M_\odot$ and $M_2 = 0.125 \pm 0.006M_\odot$ in the Galactic disk. Assuming the source star is at the same distance as the bulge red clump stars, we find the lens is at a distance $D_L = 2.44 \pm 0.10 kpc$. In the end, we provide a summary and short discussion of all published microlensing events in which the annual parallax effect is confirmed by other independent observations., Comment: 16 pages, 5 figures
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- 2017
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19. A triangular triple quantum dot with tunable tunnel couplings
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Noiri, A., Kawasaki, K., Otsuka, T., Nakajima, T., Yoneda, J., Amaha, S., Delbecq, M. R., Takeda, K., Allison, G., Ludwig, A., Wieck, A. D., and Tarucha, S.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
A two-dimensional arrangement of quantum dots with finite inter-dot tunnel coupling provides a promising platform for studying complicated spin correlations as well as for constructing large-scale quantum computers. Here, we fabricate a tunnel-coupled triangular triple quantum dot with a novel gate geometry in which three dots are defined by positively biasing the surface gates. At the same time, the small area in the center of the triangle is depleted by negatively biasing the top gate placed above the surface gates. The size of the small center depleted area is estimated from the Aharonov-Bohm oscillation measured for the triangular channel but incorporating no gate-defined dots, with a value consistent with the design. With this approach, we can bring the neighboring gate-defined dots close enough to one another to maintain a finite inter-dot tunnel coupling. We finally confirm the presence of the inter-dot tunnel couplings in the triple quantum dot from the measurement of tunneling current through the dots in the stability diagram. We also show that the charge occupancy of each dot and that the inter-dot tunnel couplings are tunable with gate voltages., Comment: accepted on Semiconductor Science and Technology
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- 2017
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20. Dependences of morphology and surface roughness on growth conditions of diamond capsules for the direct-drive inertial confinement fusion
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Iwasaki, T., Kawasaki, K., Yamada, H., Ohmagari, S., Takeuchi, D., Chayahara, A., Mokuno, Y., Hironaka, Y., and Shigemori, K.
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- 2020
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21. CACNA1S mutation‐associated dental anomalies: A calcium channelopathy.
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Kantaputra, P., Butali, A., Eliason, S., Chalkley, C., Nakornchai, S., Bongkochwilawan, C., Kawasaki, K., Kumchiang, A., Ngamphiw, C., Tongsima, S., Ketudat Cairns, J. R., Olsen, B., Intachai, W., Ohazama, A., Tucker, A. S., and Amendt, B. A.
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DENTAL radiography ,TEETH abnormalities ,IN situ hybridization ,TOOTH roots ,RESEARCH funding ,CELL physiology ,POLYMERASE chain reaction ,FLUORESCENT antibody technique ,DENTAL crowns ,CALCIUM ,THAI people ,GENE expression profiling ,WESTERN immunoblotting ,SCANNING electron microscopy ,CYTOPLASM ,GENETIC mutation ,BIOLOGICAL assay ,MOLECULAR pathology ,SEQUENCE analysis ,BIOMARKERS - Abstract
Objectives: To identify the molecular etiology of distinct dental anomalies found in eight Thai patients and explore the mutational effects on cellular functions. Materials and Methods: Clinical and radiographic examinations were performed for eight patients. Whole exome sequencing, mutant protein modelling, qPCR, western blot analysis, scratch assays, immunofluorescence, confocal analysis, in situ hybridization, and scanning electron micrography of teeth were done. Results: All patients had molars with multiple supernumerary cusps, single‐cusped premolars, and a reduction in root number. Mutation analysis highlighted a heterozygous c.865A>G; p.Ile289Val mutation in CACNA1S in the patients. CACNA1S is a component of the slowly inactivating L‐type voltage‐dependent calcium channel. Mutant protein modeling suggested that the mutation might allow leakage of Ca2+ or other cations, or a tightening, to restrict calcium flow. Immunohistochemistry analysis showed expression of Cacna1s in the developing murine tooth epithelium during stages of crown and root morphogenesis. In cell culture, the mutation resulted in abnormal cell migration of transfected CHO cells compared to wildtype CACNA1S, with changes to the cytoskeleton and markers of focal adhesion. Conclusions: The malformations observed in our patients suggest a role for calcium signaling in organization of both cusps and roots, affecting cell dynamics within the dental epithelium. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Comparison of Cerebral Blood Flow Patterns in Patients with Phantom Bite Syndrome with Their Corresponding Clinical Features
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Umezaki Y, Watanabe M, Shinohara Y, Sugawara S, Kawasaki K, Tu TTH, Watanabe T, Suga T, Miura A, Takenoshita M, Sato Y, Minami I, Oyama J, Toriihara A, Yoshikawa T, Naito T, Motomura H, and Toyofuku A
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phantom bite syndrome ,cerebral blood flow ,single photon emission computed tomography ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Yojiro Umezaki,1 Motoko Watanabe,2 Yukiko Shinohara,2 Shiori Sugawara,2 Kaoru Kawasaki,2 Trang TH Tu,2 Takeshi Watanabe,2 Takayuki Suga,2 Anna Miura,2 Miho Takenoshita,2 Yusuke Sato,3 Ichiro Minami,4 Jun Oyama,5 Akira Toriihara,5 Tatsuya Yoshikawa,2 Toru Naito,1 Haruhiko Motomura,2 Akira Toyofuku2 1Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan; 2Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8548, Japan; 3Department of Gerontology and Gerodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8548, Japan; 4Department of Removable Partial Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8548, Japan; 5Department of Diagnostic Radiology and Nuclear Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8548, JapanCorrespondence: Akira ToyofukuDepartment of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8548, JapanTel/Fax +81- 3-5803-5909Email toyoompm@tmd.ac.jpBackground: Phantom bite syndrome (PBS) is characterized by an uncomfortable sensation during occlusion without any evident abnormality. A recent case–control study with single-photon emission computed tomography (SPECT) using 99mTc-ethyl cysteinate dimer could not find the specific features of regional cerebral blood flow (rCBF), which might be due to the heterogeneity of PBS. We analyzed the brain images of PBS corresponding to the clinical features by studying PBS subgroups.Methods: This study contributes to elucidating the pathophysiology of PBS by evaluating regional brain perfusion on SPECT and its clinical features. We performed SPECT using 99mTc-ethyl cysteinate dimer in 44 patients with PBS. The SPECT images were analyzed qualitatively and quantitatively.Results: Asymmetrical rCBF patterns were detected, corresponding to symptom laterality. Patients with PBS with right-side symptoms showed right-side-predominant rCBF asymmetry in the parietal region and left-side-predominant rCBF asymmetry in the thalamus, and vice versa. Moreover, the analysis of the association between rCBF and patient behaviors revealed that patients who blamed their dentists for their symptoms tended to have a symmetrical rCBF pattern.Conclusion: Patients with PBS showed blood flow imbalance in the thalamus and parietal region corresponding to symptom laterality. There are two types of symmetrical and asymmetrical rCBF patterns in the pathophysiology of PBS despite similar clinical manifestations.Keywords: phantom bite syndrome, cerebral blood flow, single-photon emission computed tomography
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- 2020
23. Observation of ultra-high energy density state with x-ray free electron laser SACLA
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Maeda, Y., Hironaka, Y., Iwasaki, T., Kawasaki, K., Sakawa, Y., Izumi, T., Ota, M., Egashira, S., Nakagawa, Y., Higashi, N., Sentoku, Y., Kodama, R., Ozaki, N., Matsuoka, T., Somekawa, T., Yabuuchi, T., Inubushi, Y., Togashi, T., Kon, A., Sueda, K., Miyanishi, K., Shingubara, S., Shimizu, T., Okumura, A., and Shigemori, K.
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- 2020
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24. OA19.03 Exportin 1 Inhibition Constraints Lineage Plasticity and Histological Transformation through Downregulation of SOX2
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Quintanal-Villalonga, A., primary, Durani, V., additional, Sabet, A., additional, Redin, E., additional, Kawasaki, K., additional, Shaffer, M., additional, Manoj, P., additional, Sridhar, H., additional, Haffner, M.C., additional, Sawyers, C.L., additional, and Rudin, C.M., additional
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- 2023
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25. Multiple Immune-Related Adverse Events and Anti-Tumor Efficacy: Real-World Data on Various Solid Tumors
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Shimozaki K, Sukawa Y, Beppu N, Kurihara I, Suzuki S, Mizuno R, Funakoshi T, Ikemura S, Tsugaru K, Togasaki K, Kawasaki K, Hirata K, Hayashi H, Hamamoto Y, Takaishi H, and Kanai T
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immune checkpoint inhibitors ,programmed cell death 1 ,prognosis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Keitaro Shimozaki,1 Yasutaka Sukawa,1 Noriko Beppu,2 Isao Kurihara,3 Shigeaki Suzuki,4 Ryuichi Mizuno,5 Takeru Funakoshi,6 Shinnosuke Ikemura,7,8 Kai Tsugaru,1 Kazuhiro Togasaki,1 Kenta Kawasaki,1 Kenro Hirata,1 Hideyuki Hayashi,8 Yasuo Hamamoto,8 Hiromasa Takaishi,8 Takanori Kanai1 1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan; 2Department of Pharmacy, Keio University Hospital, Tokyo, Japan; 3Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan; 4Department of Neurology, Keio University School of Medicine, Tokyo, Japan; 5Department of Urology, Keio University School of Medicine, Tokyo, Japan; 6Department of Dermatology, Keio University School of Medicine, Tokyo, Japan; 7Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan; 8Keio Cancer Center, Keio University School of Medicine, Tokyo, JapanCorrespondence: Yasutaka Sukawa Tel +81-3-3353-1211Fax +81-3-5363-6247Email sukawa@keio.jpPurpose: Immune checkpoint inhibitors (ICIs) have been approved for various types of cancer; however, they cause a broad spectrum of immune-related adverse events (irAEs). The association between the development of irAEs and the clinical benefit remains uncertain. We aimed to evaluate the association of irAEs and the treatment efficacy in real-world practice.Patients and Methods: We conducted a retrospective study on patients with recurrent or metastatic non-small-cell lung cancer, malignant melanoma, renal cell carcinoma, or gastric cancer who received anti-PD-1/PD-L1 antibodies (nivolumab, pembrolizumab, or atezolizumab) at the Keio University Hospital between September 2014 and January 2019. We recorded treatment-related AEs from medical records and graded them using the Common Terminology Criteria for Adverse Events version 4. We performed an overall survival (OS) analysis using a Cox proportional hazards model and the shared frailty model.Results: Of 212 patients eligible for this study, 108 experienced irAEs and 42 developed multiple irAEs. The median OS was significantly longer in the irAEs than in the no-irAE group (28.1 months vs 12.7 months; hazard ratio [HR], 0.49; 95% confidence interval [CI], 0.33– 0.73; P = 0.0004). Moreover, the OS of patients with multiple irAEs was significantly longer than that of patients with a single irAE (42.3 months vs 18.8 months; HR, 0.473; 95% CI, 0.346– 0.647; P < 0.0001).Conclusion: Our single-center retrospective study revealed a significant tendency associating the development of multiple irAEs with favorable prognoses.Keywords: immune checkpoint inhibitors, programmed cell death 1, prognosis
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- 2020
26. Effects of hydrogen concentration in ablator material on stimulated Raman scattering, two-plasmon decay, and hot electrons for direct-drive inertial confinement fusion
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Kawasaki, K., primary, Cristoforetti, G., additional, Idesaka, T., additional, Hironaka, Y., additional, Tanaka, D., additional, Batani, D., additional, Fujioka, S., additional, Gizzi, L. A., additional, Hata, M., additional, Johzaki, T., additional, Katagiri, K., additional, Kodama, R., additional, Matsuo, S., additional, Nagatomo, H., additional, Nicolai, Ph., additional, Ozaki, N., additional, Sentoku, Y., additional, Takizawa, R., additional, Yogo, A., additional, Yamada, H., additional, and Shigemori, K., additional
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- 2023
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27. Pharmacotherapeutic outcomes in atypical odontalgia: determinants of pain relief
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Tu TTH, Miura A, Shinohara Y, Mikuzuki L, Kawasaki K, Sugawara S, Suga T, Watanabe T, Aota Y, Umezaki Y, Takenoshita M, and Toyofuku A
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Atypical odontalgia ,Orofacial chronic pain ,Depression ,Pain catastrophizing ,Tricyclic antidepressant ,Atypical antipsychotic. ,Medicine (General) ,R5-920 - Abstract
Trang TH Tu,1 Anna Miura,1 Yukiko Shinohara,1 Lou Mikuzuki,1 Kaoru Kawasaki,1 Shiori Sugawara,1 Takayuki Suga,1 Takeshi Watanabe,1 Yuma Aota,1 Yojiro Umezaki,2 Miho Takenoshita,1 Akira Toyofuku1 1Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; 2Department of Geriatric Dentistry, Fukuoka Dental College, Fukuoka, Japan Objectives: There has been considerable research which has focused on clarifying the origin of pain in patients with atypical odontalgia (AO), also known as “idiopathic toothache”, and on identifying effective treatment, but there has been limited success so far. In this study, we assessed the outcomes of treatment and attempted to identify factors that could account for pain remission in patients with AO.Patients and methods: Data for 165 patients diagnosed with AO from June 2015 to August 2017 were retrospectively reviewed. The patients’ sex, age, duration of pain, and psychiatric history were collected, along with information on pain intensity, depressive status, and catastrophizing scores. Responses at 4 and 16 weeks from the start of treatment were observed. The associations between potentially associated factors and outcome were investigated using Bayesian model averaging.Results: A 30% reduction in pain was reported by 38 patients (46.3%) at 4 weeks and by 54 patients (65.9%) at 16 weeks. The pain intensity decreased as the depression and catastrophizing score improved; all of the changes were statistically significant (P
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- 2019
28. Background studies of high energy γ rays from (n,γ) reactions in the CANDLES experiment
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Nakajima, K., Iida, T., Akutagawa, K., Batpurev, T., Chan, W.M., Dokaku, F., Fushimi, K., Kakubata, H., Kanagawa, K., Katagiri, S., Kawasaki, K., Khai, B.T., Kino, H., Kinoshita, E., Kishimoto, T., Hazama, R., Hiraoka, H., Hiyama, T., Ishikawa, M., Li, X., Maeda, T., Matsuoka, K., Moser, M., Nomachi, M., Ogawa, I., Ohata, T., Sato, H., Shamoto, K., Shimada, M., Shokati, M., Takahashi, N., Takemoto, Y., Takihira, Y., Tamagawa, Y., Tozawa, M., Teranishi, K., Tetsuno, K., Trang, V.T.T., Tsuzuki, M., Umehara, S., Wang, W., Yoshida, S., and Yotsunaga, N.
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- 2018
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29. Paleomagnetism of the native copper mineralization, Keweenaw Peninsula, Michigan
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Symons, D.T.A. and Kawasaki, K.
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Earth sciences - Abstract
The age and genesis of Michigan's world-class native copper deposits are poorly constrained. The copper is hosted by basaltic flow tops and conglomeratic interbeds of the 1095 [+ or -] 2 Ma Keweenawan Portage Lake Formation. Progressive thermal demagnetization isolates stable hematite remanent magnetization components at 28 paleomagnetic sites. Paleomagnetic tilt tests show that magnetite in massive flow interiors is primary (1095 [+ or -] 2 Ma) and that hematite throughout the formation is syntectonic. The altered cupriferous deposits contain primary ~1095 Ma and secondary ~1053 Ma hematite in various proportions. The Caledonia Mine's basaltic mineralization carries the ~1053 Ma hematite dominantly whereas the Delaware Mine's conglomeratic interbed mineralization carries the ~1095 Ma hematite dominantly. The ~1095 Ma hematite is attributed mostly to magnetite exsolution during flow extrusion and to weathering oxidation between extrusion events. An infusion of epigenetic hydrothermal fluids emplaced the native copper with additional hematite and polarity self-reversing titanohematite at 1053 [+ or -] 7 Ma. Importantly, paleomagnetic evidence supports a 1053 [+ or -] 7 Ma age also for the White Pine stratiform sedimentary copper mineralization, for the oxidation of the Oronto Group clastic rocks to red beds, and for the time limits of major tectonic uplift and deformation on the Keweenaw Peninsula. Key words: paleomagnetism, native copper mineralization, Keweenawan Supergroup, North America, Proterozoic. L'age et la genese des gisements de cuivre natif de classe mondiale du Michigan ne sont pas bien etablis. Le cuivre occupe le sommet de coulees basaltiques et des interlits conglomeratiques de la Formation keweenawienne de Portage Lake de 1095 [+ or -] 2 Ma. Une demagnetisation thermique progressive isole des elements d'hematite a magnetisation remanente stable dans 28 sites paleomagnetiques. Des tests d'inclinaison paleomagnetique montrent que la magnetite dans la partie interne de coulees massives est primaire (1095 [+ or -] 2 Ma) et que l'hematite dans toute la formation est syntectonique. Les gisements cupriferes alteres contiennent des proportions variables d'hematite primaire de ~1095 Ma et secondaire de ~1053 Ma. Dans la mineralisation basaltique a la mine Caledonia, l'hematite de ~1053 Ma domine, alors que, dans la mineralisation dans des interlits conglomeratiques de la mine Delaware, l'hematite de ~1095 Ma est dominante. L'hematite de ~1095 Ma est principalement attribuee a l'exsolution de magnetite durant l'extrusion des coulees et l'oxydation associee a la meteorisation entre les episodes d'extrusion. L'infusion de fluides hydrothermaux epigenetiques a mis en place le cuivre natif avec d'autre hematite et de la titanohematite a polarite autoinversee a 1053 [+ or -] 7 Ma. Fait a noter, les observations paleomagnetiques appuient aussi un age de 1053 [+ or -] 7 Ma pour la mineralisation cuprifere sedimentaire stratiforme de White Pine, pour l'oxydation des roches clastiques du Groupe d'Oronto en des couches rouges et pour les limites temporelles d'importants episodes de soulevement tectonique et de deformation dans la peninsule Keweenaw. [Traduit par la Redaction] Mots-cles: paleomagnetisme, mineralisation de cuivre natif, Supergroupe de Keweenawan, Amerique du Nord, Proterozoique., Introduction The Mesoproterozoic Keweenawan strata on the northwestern side of the Keweenaw Peninsula in northern Michigan host two world-class copper mining districts (Fig. 1). The native copper lode (NCL) district, [...]
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- 2019
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30. Dissolved state of radon with cluster molecules of solvent
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Yamada, N., Shin, Y., Kawasaki, K., Yokoyama, A., and Ida, T.
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- 2018
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31. Clinical characteristics and course of oral somatic delusions: a retrospective chart review of 606 cases in 5 years
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Umezaki Y, Miura A, Shinohara Y, Mikuzuki L, Sugawara S, Kawasaki K, Tu TTH, Watanabe T, Suga T, Watanabe M, Takenoshita M, Yoshikawa T, Uezato A, Nishikawa T, Hoshiko K, Naito T, Motomura H, and Toyofuku A
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Oral cenesthopathy ,Delusional disorder somatic type (DDST) ,Chart review ,Dentistry ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Yojiro Umezaki,1 Anna Miura,2 Yukiko Shinohara,2 Lou Mikuzuki,2 Shiori Sugawara,2 Kaoru Kawasaki,2 Trang TH Tu,2 Takeshi Watanabe,2 Takayuki Suga,2 Motoko Watanabe,3 Miho Takenoshita,2 Tatsuya Yoshikawa,2 Akihito Uezato,4 Toru Nishikawa,4 Ken Hoshiko,5 Toru Naito,1 Haruhiko Motomura,2 Akira Toyofuku2 1Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan; 2Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; 3Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Tokyo, Japan; 4Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; 5Department of Pharmacy, Dental Hospital, Tokyo Medical and Dental University, Tokyo, Japan Objective: Oral cenesthopathy is characterized by foreign body sensations without medical and dental evidence for them. It is thought to be a rare disease in psychiatry, but many patients are visiting dental clinics seeking treatment to remove a foreign body. Even though the features of oral cenesthopathy might be different between a psychiatric clinic and a dental clinic, there has been no clinico-statistical study from dentists. In this study, we report a clinico-statistical study of patients with oral cenesthopathy in dentistry. Methods: This is a retrospective chart review of 606 outpatients with oral cenesthopathy in Tokyo Medical and Dental University from April 2010 through to March 2015. Results: A total of 159 male and 447 female patients were included in this study. The mean age was 62.08 years, and female patients were older than male patients. The trigger of the dental treatment and the acute phase of depression at the onset were significantly related (p=0.037). Only 128 patients (36%) had clinically significant improvement after 6 months of pharmacotherapy. No history of psychiatric disorders (odds ratio [OR] 0.479 [95% confidence interval {CI}: 0.262–0.875], p=0.017) and longer duration of illness (>18 months) (OR 2.626 [95% CI: 1.437–4.799], p=0.002) were significant factors for clinical outcomes. Conclusion: Patients with oral cenesthopathy in our clinic were predominantly elderly female patients. Dental treatment in the acute phase of depression might be a risk factor for oral cenesthopathy. Therefore, comprehending the situation of psychiatric disorder and obtaining adequate informed consent might be required to prevent the trouble concerning oral cenesthopathy. Keywords: oral cenesthopathy, delusional disorder somatic type, DDST, chart review, dentistry
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- 2018
32. Ultrahigh-energy density state in nanowire arrays irradiated with picosecond kilojoule-class ultra-intense laser.
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Tanaka, D., Maeda, Y., Hironaka, Y., Kawasaki, K., Higashi, N., Iwata, N., Sentoku, Y., Kodama, R., Ozaki, N., Somekawa, T., Shinguubara, S., Shimizu, T., Sawada, H., and Shigemori, K.
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NANOWIRES ,ULTRASHORT laser pulses ,DENSITY of states ,INERTIAL confinement fusion ,HOT carriers ,FEMTOSECOND lasers ,LASERS - Abstract
Ultrahigh-energy density (UHED) states greater than 1 Gbar pressure are typically observed under extreme conditions, such as in the core of an inertial confinement fusion implosion. A novel alternative approach for generating volumetric UHED states is to use nanowire arrays irradiated with a femtosecond ultrahigh-intensity laser. In this paper, we present an experimental investigation on laser absorption and energy transport in nanowire arrays irradiated with a picosecond kilojoule petawatt laser. The laser–target interactions were studied by measuring the x-ray emission and escaping hot electrons from a bare Cu foil and a foil with a nanowire array grown on its surface. The measured Cu-Kα and He-α emissions from the nanowire array were higher than those from the flat foil. In addition, hot electrons observed from the front surface of the nanowire array were enhanced. On the other hand, despite the stronger Kα emission from the nanowire array and the enhancement of hot electrons escaping from the front surface of the nanowire array, the number of hot electrons observed from the rear side of the flat foil target was slightly lower than that of the flat foil. A comparison of the experimental results with the results of a two-dimensional particle-in-cell simulation code suggested that the magnetic fields generated around the periodic nanowire array trap hot electrons, improving the electron-to-target energy coupling and efficiently producing UHED states. [ABSTRACT FROM AUTHOR]
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- 2023
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33. Study on Non-Freon Air Cooling System Using Water Refrigerant
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Sugawara, A., primary, Nakamikawa, S., additional, Kageyama, M., additional, Yamazaki, S., additional, Abe, N., additional, Itou, T., additional, Tsurumaki, A., additional, and Kawasaki, K., additional
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- 2019
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34. Japanese standardization for gear steel qualification via evaluation of HV-scattering
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Kubo, A., primary, Nagae, M., additional, and Kawasaki, K., additional
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- 2019
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35. Preparation of a Non-Polar ZnO Film on a Single-Crystal NdGaO3 Substrate by the RF Sputtering Method
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Kashiwaba, Y., Tanaka, Y., Sakuma, M., Abe, T., Imai, Y., Kawasaki, K., Nakagawa, A., Niikura, I., Kashiwaba, Y., and Osada, H.
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- 2018
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36. CACNA1S mutation‐associated dental anomalies: A calcium channelopathy
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Kantaputra, P., primary, Butali, A., additional, Eliason, S., additional, Chalkley, C., additional, Nakornchai, S., additional, Bongkochwilawan, C., additional, Kawasaki, K., additional, Kumchiang, A., additional, Ngamphiw, C., additional, Tongsima, S., additional, Ketudat Cairns, J. R., additional, Olsen, B., additional, Intachai, W., additional, Ohazama, A., additional, Tucker, A. S., additional, and Amendt, B. A., additional
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- 2023
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37. Ultrafast time-resolved 2D imaging of laser-driven fast electron transport in solid density matter using an x-ray free electron laser
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Sawada, H., primary, Yabuuchi, T., additional, Higashi, N., additional, Iwasaki, T., additional, Kawasaki, K., additional, Maeda, Y., additional, Izumi, T., additional, Nakagawa, Y., additional, Shigemori, K., additional, Sakawa, Y., additional, Curry, C. B., additional, Frost, M., additional, Iwata, N., additional, Ogitsu, T., additional, Sueda, K., additional, Togashi, T., additional, Glenzer, S. H., additional, Kemp, A. J., additional, Ping, Y., additional, and Sentoku, Y., additional
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- 2023
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38. Multibeam laser–plasma interaction at the Gekko XII laser facility in conditions relevant for direct-drive inertial confinement fusion
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Cristoforetti, G., primary, Koester, P., additional, Atzeni, S., additional, Batani, D., additional, Fujioka, S., additional, Hironaka, Y., additional, Hüller, S., additional, Idesaka, T., additional, Katagiri, K., additional, Kawasaki, K., additional, Kodama, R., additional, Mancelli, D., additional, Nicolai, Ph., additional, Ozaki, N., additional, Schiavi, A., additional, Shigemori, K., additional, Takizawa, R., additional, Tamagawa, T., additional, Tanaka, D., additional, Tentori, A., additional, Umeda, Y., additional, Yogo, A., additional, and Gizzi, L. A., additional
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- 2023
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39. Development of a hyper-resolution water resource model including advanced modeling of dam operations and human water usage in Japan
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Kawasaki, K., Hirabayashi, Y., Ide, K., Yamamuro, N., Hanasaki, N., Oda, T., and Noda, K.
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Climate change and increased human activities have resulted in environmental changes such as an increase in evapotranspiration and drought, and the freshwater resources we currently use may not always be available in the same locations in the future. Hence, we need to identify where water resources will be compromised by climate change.The quantification of global water stress through hyper-resolution models necessitates a comprehensive understanding of local water use patterns. The calculation of water stress requires water usage data at a grid-level resolution however, such is frequently lacking in many regions. In this study, we investigated water stress in the Japanese region using global freshwater resources model, H08, by compiling the necessary data for water stress calculations, based on the availability of detailed information on land use, topography, and water use.Water use statistics available at the prefectural and municipal level were downscaled to 1 min resolution. In addition, reservoir operations upstream of the river were incorporated into the model for each purpose. For agricultural water use, in addition to irrigation by water withdrawal from rivers near farmland, the utilization of out-of-basin water sources and conduits systems were also considered.The results reveals that potential high water stress was observed in high population density areas and industrial areas throughout the year. In areas where farmers grow crops, potential high water stress was only observed during the irrigation season. There are 9 out of 47 prefectures in Japan that have potential high water stress, and many of these areas are located in industrial areas., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
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- 2023
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40. Development of multi-frequency ESR system for high-pressure measurements up to 2.5 GPa
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Sakurai, T., Fujimoto, K., Matsui, R., Kawasaki, K., Okubo, S., Ohta, H., Matsubayashi, K., Uwatoko, Y., and Tanaka, H.
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- 2015
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41. Lifetime dependence of nitrided carbon stripper foils on sputter angle during N+ ion beam sputtering
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Sugai, I., Oyaizu, M., Takeda, Y., Kawakami, H., Kawasaki, K., Hattori, T., and Kadono, T.
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- 2015
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42. Effect of Vacuum Drying in Target Preparation from Potassium Hydroxide Solution on the Spectra of Rutherford Backscattering Spectroscopy
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Toriyama, T., Suzuki, S., Kawasaki, K., Takagi, Y., Nagai, M., Fukuda, H., Kondo, K., and Oguri, Y.
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- 2015
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43. Gastrointestinal: Rectal laterally spreading tumor treated by whole‐circumferential endoscopic submucosal dissection
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Kawasaki, K, primary, Kawatoko, S, additional, Sato, H, additional, and Torisu, T, additional
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- 2022
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44. Manufacturing method of large-sized cylindrical worm gear with Neiman profile using CNC combined machine tool
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Kawasaki, K., primary and Tsuji, I., additional
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- 2016
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45. Development of an experimental platform for the investigation of laser–plasma interaction in conditions relevant to shock ignition regime
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Tamagawa, T., primary, Hironaka, Y., additional, Kawasaki, K., additional, Tanaka, D., additional, Idesaka, T., additional, Ozaki, N., additional, Kodama, R., additional, Takizawa, R., additional, Fujioka, S., additional, Yogo, A., additional, Batani, D., additional, Nicolai, Ph., additional, Cristoforetti, G., additional, Koester, P., additional, Gizzi, L. A., additional, and Shigemori, K., additional
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- 2022
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46. Practical estimation of wave transmission and reflection from fixed submerged structures
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Verduzco-Zapata, M.G., Ocampo-Torres, F.J., Osuna, P., Parés-Sierra, A.F., and Kawasaki, K.
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- 2012
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47. Effects of processing parameters on characteristics of surface modified layers generated by atmospheric controlled IH-FPP system
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Fukuoka, T., Ujiie, Y., Komotori, J., Fukazawa, K., Misaka, Y., and Kawasaki, K.
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- 2011
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48. Preparation and characterization of nanocrystalline ITO thin films on glass and clay substrates by ion-beam sputter deposition method
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Venkatachalam, S., Nanjo, H., Kawasaki, K., Wakui, Y., Hayashi, H., and Ebina, T.
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- 2011
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49. Shock Hugoniot Data for Water up to 5 Mbar Obtained with Quartz Standard at High-Energy Laser Facilities
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Mancelli, D., primary, Errea, I., additional, Tentori, A., additional, Turianska, O., additional, Larreur, H., additional, Katagiri, K., additional, Ozaki, N., additional, Kamimura, N., additional, Kamibayashi, D., additional, Ishida, K., additional, Ogura, H., additional, Kawasaki, K., additional, Maeda, Y., additional, Hironaka, Y., additional, Shigemori, K., additional, Batani, K., additional, Schaumann, G., additional, Rosmej, O., additional, Neumayer, P., additional, Zielbauer, B., additional, Martynenko, A. S., additional, Filippov, E. D., additional, Pikuz, S., additional, and Batani, D., additional
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- 2021
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50. Direct-drive implosion experiment of diamond capsules fabricated with hot filament chemical vapor deposition technique
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Kawasaki, K., primary, Tanaka, D., additional, Yamada, H., additional, Ohmagari, S., additional, Mokuno, Y., additional, Chayahara, A., additional, Tamagawa, T., additional, Hironaka, Y., additional, Yamanoi, K., additional, Tsukamoto, M., additional, Sato, Y., additional, Somekawa, T., additional, Nagatomo, H., additional, Mima, K., additional, and Shigemori, K., additional
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- 2021
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