5,584 results on '"Matsuda, S."'
Search Results
2. Inducible [CCR2.sup.+] nonclassical monocytes mediate the regression of cancer metastasis
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Liu, Xianpeng, Ren, Ziyou, Tan, Can, Nunez-Santana, Felix L., Kelly, Megan E., Yan, Yuanqing, Sun, Haiying, Abdala- Valencia, Hiam, Yang, Wenbin, Wu, Qiang, Toyoda, Takahide, Milisav, Marija, Casalino-Matsuda, S. Marina, Lecuona, Emilia, Cerier, Emily Jeong, Heung, Lena J., Abazeed, Mohamed E., Perlman, Harris, Gao, Ruli, Chandel, Navdeep S., Budinger, G.R. Scott, and Bharat, Ankit
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Metastasis -- Risk factors -- Development and progression -- Care and treatment ,Immunotherapy -- Patient outcomes -- Evaluation ,Monocytes -- Analysis -- Health aspects ,Health care industry - Abstract
A major limitation of immunotherapy is the development of resistance resulting from cancer-mediated inhibition of host lymphocytes. Cancer cells release CCL2 to recruit classical monocytes expressing its receptor CCR2 for the promotion of metastasis and resistance to immunosurveillance. In the circulation, some CCR2-expressing classical monocytes lose CCR2 and differentiate into intravascular nonclassical monocytes that have anticancer properties but are unable to access extravascular tumor sites. We found that in mice and humans, an ontogenetically distinct subset of naturally underrepresented CCR2-expressing nonclassical monocytes was expanded during inflammatory states such as organ transplant and COVID-19 infection. These cells could be induced during health by treatment of classical monocytes with small-molecule activators of NOD2. The presence of CCR2 enabled these inducible nonclassical monocytes to infiltrate both intra- and extravascular metastatic sites of melanoma, lung, breast, and colon cancer in murine models, and they reversed the increased susceptibility of [Nod2.sup.-/-] mutant mice to cancer metastasis. Within the tumor colonies, [CCR2.sup.+] nonclassical monocytes secreted CCL6 to recruit NK cells that mediated tumor regression, independent of T and B lymphocytes. Hence, pharmacological induction of [CCR2.sup.+] nonclassical monocytes might be useful for immunotherapy-resistant cancers., Introduction Tumors augment monopoiesis and orchestrate the epigenetic reprogramming of [CCR2.sup.+] classical monocytes (CMs) into tumor-associated macrophages that drive immune suppression to promote tumor progression, metastasis, and resistance to immunotherapy [...]
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- 2024
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3. Combined Social Frailty and Life-Space Activities Associated with Risk of Disability: A Prospective Cohort Study
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Doi, Takehiko, Tsutsumimoto, K., Makino, K., Nakakubo, S., Sakimoto, F., Matsuda, S., and Shimada, H.
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- 2024
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4. Stress Fractures of the First Rib Related to Soft Tennis, Associated with the Tennis Ground Stroke
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Sakamoto A, Okudaira S, Onishi Y, Noguchi T, and Matsuda S
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first rib ,stress fracture ,tennis ,tennis stroke ,Sports medicine ,RC1200-1245 - Abstract
Akio Sakamoto, Shuzo Okudaira, Yuta Onishi, Takashi Noguchi, Shuichi Matsuda The Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, JapanCorrespondence: Akio Sakamoto, The Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Shogoin, Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan, Tel +8175-751-3366, Fax +81-75-751-8409, Email akiosaka@kuhp.kyoto-u.ac.jpAbstract: Stress fractures of the first rib are uncommon and thought to be associated with overhead-throwing athletes. Soft tennis is similar to regular tennis but uses a much softer rubber ball. In the current report, a 14-year-old girl suffered from shoulder girdle pain, especially at the end of her tennis ground stroke. Plain radiographs showed overgrowth of bone with a fracture line on the first rib, and a diagnosis of stress fracture was made. She was advised to amend her stroke form to reduce force to the shoulder and was able to continue sports activity without pain 10 months after the appearance of her symptoms and before confirmation of bone healing. The current case is not associated with overhead-throwing, but possibly with repetitive exercises of her tennis ground strokes. Conservative medical follow-up with proper sport-specific professional advice allows continuation of the sport.Plain Language Summary: Stress fractures of the first rib are rare, mainly linked to overhead-throwing athletes. Soft tennis resembles regular tennis but uses a softer rubber ball. In this case, a 14-year-old girl with shoulder girdle pain, especially during tennis strokes, was diagnosed with a first rib stress fracture via plain radiographs. She improved by adjusting her stroke and resumed sports pain-free within 10 months, even before full bone healing. This case was not linked to overhead-throwing but potentially resulted from repetitive ground strokes. Proper medical guidance supports sport continuation.Keywords: first rib, stress fracture, tennis, tennis stroke
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- 2023
5. Thermal Grill Illusion in Post-Stroke Patients: Analysis of Clinical Features and Lesion Areas
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Matsuda S, Igawa Y, Uchisawa H, Iki S, and Osumi M
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thermal grill illusion ,post stroke pain ,central sensitization ,thalamus ,insula. ,Medicine (General) ,R5-920 - Abstract
Soichiro Matsuda,1 Yuki Igawa,1,2 Hidekazu Uchisawa,1,2 Shinya Iki,3 Michihiro Osumi1,4 1Graduate School of Health Sciences, Kio University, Nara, Japan; 2Department of Rehabilitation, Nishiyamato Rehabilitation Hospital, Nara, Japan; 3Department of Rehabilitation, Kawaguchi Neurosurgery Rehabilitation Clinic, Osaka, Japan; 4Neurorehabilitation Research Center, Kio University, Nara, JapanCorrespondence: Soichiro Matsuda, Graduate School of Health Sciences, Kio University, 4-2-2 Umaminaka, Kitakatsuragigun, Nara, 635-0832, Japan, Tel +745-54-1601, Fax +745-54-1600, Email f1996957@kio.ac.jpPurpose: In the thermal grill illusion, participants experience a feeling similar to burning pain. The illusion is induced by simultaneously touching warm and cool stimuli in alternating positions. In post-stroke pain, central sensitization is caused by a variety of factors, including damage to the spinothalamic tract and shoulder pain. Because the thermal grill illusion depends on central mechanisms, it has recently been suggested that it may be a useful indicator of central sensitization. Therefore, we hypothesized that post-stroke patients who are more likely to experience central sensitization may also be more likely to experience a thermal grill sensation of pain and discomfort than the likelihood among those who are less likely to experience central sensitization. However, the effects of the thermal grill illusion in post-stroke patients have not yet been reported. In this pilot study, we conducted the thermal grill illusion procedure in post-stroke patients and analyzed the relationship between clinical somatosensory functions and thermal grill sensations. We also conducted brain imaging analysis to identify brain lesion areas that were associated with thermal grill sensations.Patients and Methods: Twenty patients (65.7 ± 11.9 years old) with post-stroke patients participated in this study. The thermal grill illusion procedure was performed as follows: patients simultaneously touched eight water-filled copper bars, with the water temperature adjusted to provide alternate warm (40°C) and cold (20°C) stimuli.Results: Thermal grill sensation of pain and discomfort tended to be associated with the wind-up phenomenon in bedside quantitative sensory testing and thermal grill sensation of discomfort was also related to damage to the thalamic lateral nucleus.Conclusion: These findings suggest that the thermal grill illusion might measure central sensitization, and that secondary brain hyperactivity might lead to increased thermal grill sensations.Keywords: thermal grill illusion, post stroke pain, central sensitization, thalamus, insula
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- 2023
6. The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment
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collaboration, KamLAND-Zen, Gando, Y., Gando, A., Hachiya, T., Hayashida, S., Hosokawa, K., Ikeda, H., Mitsui, T., Nakada, T., Obara, S., Ozaki, H., Shirai, J., Ueshima, K., Watanabe, H., Abe, S., Hata, K., Hayashi, A., Honda, Y., Ieki, S., Inoue, K., Ishidoshiro, K., Ishikawa, S., Kamei, Y., Kamizawa, K., Karino, Y., Kawada, N., Kinoshita, T., Koga, M., Matsuda, S., Miyake, H., Nakamura, K., Nemoto, K., Ono, A., Ota, N., Otsuka, S., Shibukawa, Y., Shimizu, I., Shirahata, Y., Soma, K., Suzuki, A., Suzuki, A. A., Takai, T., Takeuchi, A., Tamae, K., Teraoka, Y., Wada, Y., Chernyak, D., Kozlov, A., Yoshida, S., Umehara, S., Takemoto, Y., Fushimi, K., Hirata, S., Grant, C., Li, A., Learned, J. G., Maricic, J., Berger, B. E., Fujikawa, B. K., Fraker, S., Herman, A., Krupczak, E., Pease, G. L., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., O'Donnell, T., Dell'Oro, S., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
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Physics - Instrumentation and Detectors ,High Energy Physics - Experiment ,Nuclear Experiment - Abstract
The KamLAND-Zen 800 experiment is searching for the neutrinoless double-beta decay of $^{136}$Xe by using $^{136}$Xe-loaded liquid scintillator. The liquid scintillator is enclosed inside a balloon made of thin, transparent, low-radioactivity film that we call Inner Balloon (IB). The IB, apart from guaranteeing the liquid containment, also allows to minimize the background from cosmogenic muon-spallation products and $^{8}$B solar neutrinos. Indeed these events could contribute to the total counts in the region of interest around the Q-value of the double-beta decay of $^{136}$Xe. In this paper, we present an overview of the IB and describe the various steps of its commissioning minimizing the radioactive contaminations, from the material selection, to the fabrication of the balloon and its installation inside the KamLAND detector. Finally, we show the impact of the IB on the KamLAND background as measured by the KamLAND detector itself., Comment: 23 pages, 16 figures, to be submitted to JINST
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- 2021
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7. The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment
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Gando, Y, Gando, A, Hachiya, T, Hayashida, S, Hosokawa, K, Ikeda, H, Mitsui, T, Nakada, T, Obara, S, Ozaki, H, Shirai, J, Ueshima, K, Watanabe, H, Abe, S, Hata, K, Hayashi, A, Honda, Y, Ieki, S, Inoue, K, Ishidoshiro, K, Ishikawa, S, Kamei, Y, Kamizawa, K, Karino, Y, Kawada, N, Kinoshita, T, Koga, M, Matsuda, S, Miyake, H, Nakamura, K, Nemoto, K, Ono, A, Ota, N, Otsuka, S, Shibukawa, Y, Shimizu, I, Shirahata, Y, Soma, K, Suzuki, A, Suzuki, AA, Takai, T, Takeuchi, A, Tamae, K, Teraoka, Y, Wada, Y, Chernyak, D, Kozlov, A, Yoshida, S, Umehara, S, Takemoto, Y, Fushimi, K, Hirata, S, Grant, C, Li, A, Learned, JG, Maricic, J, Berger, BE, Fujikawa, BK, Fraker, S, Herman, A, Krupczak, E, Pease, GL, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, O'Donnell, T, Dell'Oro, S, Detwiler, JA, Enomoto, S, and Decowski, MP
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Double-beta decay detectors ,Large detector systems for particle and astroparticle physics ,Liquid detectors ,Physical Sciences ,Engineering ,Nuclear & Particles Physics - Abstract
The KamLAND-Zen 800 experiment is searching for the neutrinoless double-beta decay of 136Xe by using 136Xe-loaded liquid scintillator. The liquid scintillator is enclosed inside a balloon made of thin, transparent, low-radioactivity film that we call Inner Balloon (IB). The IB, apart from guaranteeing the liquid containment, also allows to minimize the background from cosmogenic muon-spallation products and 8B solar neutrinos. Indeed these events could contribute to the total counts in the region of interest around the Q-value of the double-beta decay of 136Xe. In this paper, we present an overview of the IB and describe the various steps of its commissioning minimizing the radioactive contaminations, from the material selection, to the fabrication of the balloon and its installation inside the KamLAND detector. Finally, we show the impact of the IB on the KamLAND background as measured by the KamLAND detector itself.
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- 2021
8. Precision Analysis of the Xe136 Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements
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Gando, A, Gando, Y, Hachiya, T, Minh, M Ha, Hayashida, S, Honda, Y, Hosokawa, K, Ikeda, H, Inoue, K, Ishidoshiro, K, Kamei, Y, Kamizawa, K, Kinoshita, T, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Ono, A, Ota, N, Otsuka, S, Ozaki, H, Shibukawa, Y, Shimizu, I, Shirahata, Y, Shirai, J, Sato, T, Soma, K, Suzuki, A, Takeuchi, A, Tamae, K, Ueshima, K, Watanabe, H, Chernyak, D, Kozlov, A, Obara, S, Yoshida, S, Takemoto, Y, Umehara, S, Fushimi, K, Hirata, S, Berger, BE, Fujikawa, BK, Learned, JG, Maricic, J, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, O’Donnell, T, Detwiler, JA, Enomoto, S, Decowski, MP, Menéndez, J, Dvornický, R, and Šimkovic, F
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Nuclear and Plasma Physics ,Particle and High Energy Physics ,Synchrotrons and Accelerators ,Physical Sciences ,KamLAND-Zen Collaboration ,hep-ex ,nucl-ex ,nucl-th ,Mathematical Sciences ,Engineering ,General Physics ,Mathematical sciences ,Physical sciences - Abstract
We present a precision analysis of the ^{136}Xe two-neutrino ββ electron spectrum above 0.8 MeV, based on high-statistics data obtained with the KamLAND-Zen experiment. An improved formalism for the two-neutrino ββ rate allows us to measure the ratio of the leading and subleading 2νββ nuclear matrix elements (NMEs), ξ_{31}^{2ν}=-0.26_{-0.25}^{+0.31}. Theoretical predictions from the nuclear shell model and the majority of the quasiparticle random-phase approximation (QRPA) calculations are consistent with the experimental limit. However, part of the ξ_{31}^{2ν} range allowed by the QRPA is excluded by the present measurement at the 90% confidence level. Our analysis reveals that predicted ξ_{31}^{2ν} values are sensitive to the quenching of NMEs and the competing contributions from low- and high-energy states in the intermediate nucleus. Because these aspects are also at play in neutrinoless ββ decay, ξ_{31}^{2ν} provides new insights toward reliable neutrinoless ββ NMEs.
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- 2019
9. Precision Analysis of the ^{136}Xe Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements.
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Gando, A, Gando, Y, Hachiya, T, Ha Minh, M, Hayashida, S, Honda, Y, Hosokawa, K, Ikeda, H, Inoue, K, Ishidoshiro, K, Kamei, Y, Kamizawa, K, Kinoshita, T, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Ono, A, Ota, N, Otsuka, S, Ozaki, H, Shibukawa, Y, Shimizu, I, Shirahata, Y, Shirai, J, Sato, T, Soma, K, Suzuki, A, Takeuchi, A, Tamae, K, Ueshima, K, Watanabe, H, Chernyak, D, Kozlov, A, Obara, S, Yoshida, S, Takemoto, Y, Umehara, S, Fushimi, K, Hirata, S, Berger, BE, Fujikawa, BK, Learned, JG, Maricic, J, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, O'Donnell, T, Detwiler, JA, Enomoto, S, Decowski, MP, Menéndez, J, Dvornický, R, Šimkovic, F, and KamLAND-Zen Collaboration
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KamLAND-Zen Collaboration ,hep-ex ,nucl-ex ,nucl-th ,General Physics ,Physical Sciences - Abstract
We present a precision analysis of the ^{136}Xe two-neutrino ββ electron spectrum above 0.8 MeV, based on high-statistics data obtained with the KamLAND-Zen experiment. An improved formalism for the two-neutrino ββ rate allows us to measure the ratio of the leading and subleading 2νββ nuclear matrix elements (NMEs), ξ_{31}^{2ν}=-0.26_{-0.25}^{+0.31}. Theoretical predictions from the nuclear shell model and the majority of the quasiparticle random-phase approximation (QRPA) calculations are consistent with the experimental limit. However, part of the ξ_{31}^{2ν} range allowed by the QRPA is excluded by the present measurement at the 90% confidence level. Our analysis reveals that predicted ξ_{31}^{2ν} values are sensitive to the quenching of NMEs and the competing contributions from low- and high-energy states in the intermediate nucleus. Because these aspects are also at play in neutrinoless ββ decay, ξ_{31}^{2ν} provides new insights toward reliable neutrinoless ββ NMEs.
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- 2019
10. The Space Physics Environment Data Analysis System (SPEDAS).
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Angelopoulos, V, Cruce, P, Drozdov, A, Grimes, EW, Hatzigeorgiu, N, King, DA, Larson, D, Lewis, JW, McTiernan, JM, Roberts, DA, Russell, CL, Hori, T, Kasahara, Y, Kumamoto, A, Matsuoka, A, Miyashita, Y, Miyoshi, Y, Shinohara, I, Teramoto, M, Faden, JB, Halford, AJ, McCarthy, M, Millan, RM, Sample, JG, Smith, DM, Woodger, LA, Masson, A, Narock, AA, Asamura, K, Chang, TF, Chiang, C-Y, Kazama, Y, Keika, K, Matsuda, S, Segawa, T, Seki, K, Shoji, M, Tam, SWY, Umemura, N, Wang, B-J, Wang, S-Y, Redmon, R, Rodriguez, JV, Singer, HJ, Vandegriff, J, Abe, S, Nose, M, Shinbori, A, Tanaka, Y-M, UeNo, S, Andersson, L, Dunn, P, Fowler, C, Halekas, JS, Hara, T, Harada, Y, Lee, CO, Lillis, R, Mitchell, DL, Argall, MR, Bromund, K, Burch, JL, Cohen, IJ, Galloy, M, Giles, B, Jaynes, AN, Le Contel, O, Oka, M, Phan, TD, Walsh, BM, Westlake, J, Wilder, FD, Bale, SD, Livi, R, Pulupa, M, Whittlesey, P, DeWolfe, A, Harter, B, Lucas, E, Auster, U, Bonnell, JW, Cully, CM, Donovan, E, Ergun, RE, Frey, HU, Jackel, B, Keiling, A, Korth, H, McFadden, JP, Nishimura, Y, Plaschke, F, Robert, P, Turner, DL, Weygand, JM, Candey, RM, Johnson, RC, Kovalick, T, Liu, MH, McGuire, RE, and Breneman, A
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Geospace science ,Ionospheric physics ,Magnetospheric physics ,Planetary magnetospheres ,Solar wind ,Space plasmas ,Solarwind ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
With the advent of the Heliophysics/Geospace System Observatory (H/GSO), a complement of multi-spacecraft missions and ground-based observatories to study the space environment, data retrieval, analysis, and visualization of space physics data can be daunting. The Space Physics Environment Data Analysis System (SPEDAS), a grass-roots software development platform (www.spedas.org), is now officially supported by NASA Heliophysics as part of its data environment infrastructure. It serves more than a dozen space missions and ground observatories and can integrate the full complement of past and upcoming space physics missions with minimal resources, following clear, simple, and well-proven guidelines. Free, modular and configurable to the needs of individual missions, it works in both command-line (ideal for experienced users) and Graphical User Interface (GUI) mode (reducing the learning curve for first-time users). Both options have "crib-sheets," user-command sequences in ASCII format that can facilitate record-and-repeat actions, especially for complex operations and plotting. Crib-sheets enhance scientific interactions, as users can move rapidly and accurately from exchanges of technical information on data processing to efficient discussions regarding data interpretation and science. SPEDAS can readily query and ingest all International Solar Terrestrial Physics (ISTP)-compatible products from the Space Physics Data Facility (SPDF), enabling access to a vast collection of historic and current mission data. The planned incorporation of Heliophysics Application Programmer's Interface (HAPI) standards will facilitate data ingestion from distributed datasets that adhere to these standards. Although SPEDAS is currently Interactive Data Language (IDL)-based (and interfaces to Java-based tools such as Autoplot), efforts are under-way to expand it further to work with python (first as an interface tool and potentially even receiving an under-the-hood replacement). We review the SPEDAS development history, goals, and current implementation. We explain its "modes of use" with examples geared for users and outline its technical implementation and requirements with software developers in mind. We also describe SPEDAS personnel and software management, interfaces with other organizations, resources and support structure available to the community, and future development plans.Electronic supplementary materialThe online version of this article (10.1007/s11214-018-0576-4) contains supplementary material, which is available to authorized users.
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- 2019
11. BepiColombo mission confirms stagnation region of Venus and reveals its large extent
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Persson, M., Aizawa, S., André, N., Barabash, S., Saito, Y., Harada, Y., Heyner, D., Orsini, S., Fedorov, A., Mazelle, C., Futaana, Y., Hadid, L. Z., Volwerk, M., Collinson, G., Sanchez-Cano, B., Barthe, A., Penou, E., Yokota, S., Génot, V., Sauvaud, J. A., Delcourt, D., Fraenz, M., Modolo, R., Milillo, A., Auster, H.-U., Richter, I., Mieth, J. Z. D., Louarn, P., Owen, C. J., Horbury, T. S., Asamura, K., Matsuda, S., Nilsson, H., Wieser, M., Alberti, T., Varsani, A., Mangano, V., Mura, A., Lichtenegger, H., Laky, G., Jeszenszky, H., Masunaga, K., Signoles, C., Rojo, M., and Murakami, G.
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- 2022
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12. Epstein–Barr virus-associated inflammatory pseudotumor variant of follicular dendritic cell sarcoma of the liver: a case report and review of the literature
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Abe, K., Kitago, M., Matsuda, S., Shinoda, M., Yagi, H., Abe, Y., Oshima, G., Hori, S., Endo, Y., Yokose, T., Miura, E., Kubota, N., Ueno, A., Masugi, Y., Ojima, H., Sakamoto, M., and Kitagawa, Y.
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- 2022
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13. POS1295 POOR PROGNOSTIC FACTOR FOR RELAPSE OF INTERSTITIAL LUNG DISEASE COMPLICATED WITH ANTI-AMINOACYL-TRNA SYNTHETASE ANTIBODIES AFTER COMBINATION THERAPY: LONG-TERM FOLLOW-UP OF A SINGLE CENTRE COHORT
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Matsuda, S., primary, Kotani, T., additional, Oe, K., additional, Okazaki, A., additional, Kiboshi, T., additional, Suzuka, T., additional, Wada, Y., additional, Shoda, T., additional, and Takeuchi, T., additional
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- 2024
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14. POS0207 IDENTIFICATION OF FOUR NOVEL CLINICAL SUBTYPES IN PATIENTS WITH MICROSCOPIC POLYANGIITIS USING CLUSTER ANALYSIS: MULTICENTER REVEAL COHORT STUDY
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Okazaki, A., primary, Matsuda, S., additional, Gon, T., additional, Watanabe, R., additional, Manabe, A., additional, Shoji, M., additional, Kadoba, K., additional, Yamamoto, W., additional, Hiwa, R., additional, Kotani, T., additional, Hashimoto, M., additional, and Takeuchi, T., additional
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- 2024
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15. POS0308 LONG-TERM EFFICACY OF MEPOLIZUMAB IN PATIENTS WITH EOSINOPHILIC GRANULOMATOSIS WITH POLYANGIITIS: A PROPENSITY SCORE MATCHING ANALYSIS IN THE MULTICENTER REVEAL COHORT STUDY
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Shiomi, M., primary, Watanabe, R., additional, Matsuda, S., additional, Kotani, T., additional, Okazaki, A., additional, Masuda, Y., additional, Yoshida, T., additional, Shoji, M., additional, Tsuge, R., additional, Kadoba, K., additional, Hiwa, R., additional, Yamamoto, W., additional, and Hashimoto, M., additional
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- 2024
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16. POS0295 EVALUATION OF POOR PROGNOSTIC FACTORS FOR PREDICTING RELAPSE OF INTERSTITIAL LUNG DISEASE IN MICROSCOPIC POLYANGIITIS: MULTICENTER STUDY IN JAPAN- THE REVEAL COHORT STUDY
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Matsuda, S., primary, Kotani, T., additional, Okazaki, A., additional, Masuda, Y., additional, Shiomi, M., additional, Watanabe, R., additional, Taniguchi, T., additional, Manabe, A., additional, Kadoba, K., additional, Yoshida, T., additional, Hiwa, R., additional, Yamamoto, W., additional, Hashimoto, M., additional, and Takeuchi, T., additional
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- 2024
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17. 食道癌に対する低侵襲手術の標準化─安全な手術を施行するためのピットフォール─
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Kawakubo, H., primary, Takeuchi, M., additional, Matsuda, S., additional, and Kitagawa, Y., additional
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- 2024
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18. Long-term annual functional outcome after laparoscopic ventral rectopexy for rectoanal intussusception and/or rectocele: evaluation of sustained improvement
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Tsunoda, A., Takahashi, T., Matsuda, S., and Kusanagi, H.
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- 2021
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19. Search for electron antineutrinos associated with gravitational wave events GW150914 and GW151226 using KamLAND
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KamLAND Collaboration, Gando, A., Gando, Y., Hachiya, T., Hayashi, A., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Karino, Y., Koga, M., Matsuda, S., Mitsui, T., Nakamura, K., Obara, S., Oura, T., Ozaki, H., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Takai, T., Tamae, K., Teraoka, Y., Ueshima, K., Watanabe, H., Kozolov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Piepke, A., Banks, T. I., Berger, B. E., Fujikawa, B. K., O'Donnell, T., Learned, J. G., Maricic, J., Sakai, M., Winslow, L. A., Krupczak, E., Ouellet, J., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
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Astrophysics - High Energy Astrophysical Phenomena ,High Energy Physics - Experiment ,Nuclear Experiment - Abstract
We present a search for low energy antineutrino events coincident with the gravitational wave events GW150914 and GW151226, and the candidate event LVT151012 using KamLAND, a kiloton-scale antineutrino detector. We find no inverse beta-decay neutrino events within $\pm 500$ seconds of either gravitational wave signal. This non-detection is used to constrain the electron antineutrino fluence and the luminosity of the astrophysical sources., Comment: 11 pages, 4 figures, as published in ApJL. Updated to replace power law spectrum with Fermi Dirac spectrum
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- 2016
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20. Comparison of Surgical Outcomes Between Ab Interno Suture Trabeculotomy and Ab Externo Metal Trabeculotomy in Adult Patients with Glaucoma
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Otori Y, Matsuoka T, Kumoi M, Tachibana E, Tsujino C, and Matsuda S
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axial length ,gonio-assisted transluminal trabeculotomy ,intraocular pressure ,migs ,outcomes ,trabeculotomy ,Ophthalmology ,RE1-994 - Abstract
Yasumasa Otori, Takanori Matsuoka, Miho Kumoi, Eri Tachibana, Chieko Tsujino, Satoshi Matsuda Department of Ophthalmology, National Hospital Organization, Osaka National Hospital, Osaka, JapanCorrespondence: Yasumasa Otori Email otori.yasumasa.fe@mail.hosp.go.jpPurpose: To compare the outcomes of ab interno suture trabeculotomy (AbI-TLO) and ab externo metal trabeculotomy (AbE-TLO) in adult patients with glaucoma aged over 40 years.Patients and Methods: A retrospective chart review was conducted, including adult patients with glaucoma who underwent AbI-TLO or AbE-TLO between January 2015 and June 2019. A single surgeon (YO) performed all the operations. Eighty-one patients (81 eyes) were included in this study. Surgical success was defined as a postoperative intraocular pressure (IOP) of ≤ 18 mmHg and an IOP reduction of ≥ 20% from the preoperative IOP, without requiring additional glaucoma surgery. Success rates were assessed using Kaplan–Meier survival curves and log-rank (Mantel–Cox) tests, while risk factors were analyzed using the Cox proportional hazards model.Results: Forty-nine patients who underwent AbI-TLO and 32 patients who underwent AbE-TLO were studied; the preoperative IOPs were 27.9 ± 7.3 (mean ± standard deviation) mmHg and 25.6 ± 8.1 mmHg in the AbI-TLO and AbE-TLO groups, respectively (p=0.217). The 12-month postoperative IOPs were 15.8 ± 4.0 mmHg and 16.3 ± 4.2 mmHg in the AbI-TLO and AbE-TLO groups, respectively (p=0.724). The surgical success rates at 12 months were 77.6% and 62.5% in the AbI-TLO and AbE-TLO groups, respectively (p=0.144). Postoperative hyphema with level formation and ocular hypertension over 30 mmHg were observed in 22.4% and 26.5% of patients in the AbI-TLO group and 18.8% and 12.5% of those in the AbE-TLO group, respectively. Stepwise multivariate Cox regression analysis showed that a longer axial length was a risk factor for surgical failure (hazard ratio: 2.030; p=0.042).Conclusion: AbI-TLO and AbE-TLO had similar surgical outcomes and postoperative complications. A longer axial length was associated with an insufficient IOP reduction.Keywords: axial length, gonio-assisted transluminal trabeculotomy, intraocular pressure, MIGS, outcomes, trabeculotomy
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- 2021
21. Collaborative Research Activities of the Arase and Van Allen Probes
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Miyoshi, Y., Shinohara, I., Ukhorskiy, S., Claudepierre, S. G., Mitani, T., Takashima, T., Hori, T., Santolik, O., Kolmasova, I., Matsuda, S., Kasahara, Y., Teramoto, M., Katoh, Y., Hikishima, M., Kojima, H., Kurita, S., Imajo, S., Higashio, N., Kasahara, S., Yokota, S., Asamura, K., Kazama, Y., Wang, S.-Y., Jun, C.-W., Kasaba, Y., Kumamoto, A., Tsuchiya, F., Shoji, M., Nakamura, S., Kitahara, M., Matsuoka, A., Shiokawa, K., Seki, K., Nosé, M., Takahashi, K., Martinez-Calderon, C., Hospodarsky, G., Colpitts, C., Kletzing, Craig, Wygant, J., Spence, H., Baker, D. N., Reeves, G. D., Blake, J. B., and Lanzerotti, L.
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- 2022
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22. Erratum: “A Search for Electron Antineutrinos Associated with Gravitational-wave Events GW150914 and GW151226 Using KamLAND” (2016, ApJL, 829, L34)
- Author
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Gando, A, Gando, Y, Hachiya, T, Hayashi, A, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Karino, Y, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Obara, S, Oura, T, Ozaki, H, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Takai, T, Tamae, K, Teraoka, Y, Ueshima, K, Watanabe, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Piepke, A, Banks, TI, Berger, BE, Fujikawa, BK, O’Donnell, T, Learned, JG, Maricic, J, Sakai, M, Winslow, LA, Krupczak, E, Ouellet, J, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
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Particle and High Energy Physics ,Physical Sciences ,Astronomical and Space Sciences ,Astronomy & Astrophysics ,Astronomical sciences ,Space sciences - Published
- 2017
23. A Search for Electron Antineutrinos Associated with Gravitational-wave Events GW150914 and GW151226 Using KamLAND (vol 829, L34, 2016)
- Author
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Gando, A, Gando, Y, Hachiya, T, Hayashi, A, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Karino, Y, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Obara, S, Oura, T, Ozaki, H, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Takai, T, Tamae, K, Teraoka, Y, Ueshima, K, Watanabe, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Piepke, A, Banks, TI, Berger, BE, Fujikawa, BK, O'Donnell, T, Learned, JG, Maricic, J, Sakai, M, Winslow, LA, Krupczak, E, Ouellet, J, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, Decowski, MP, and Collaboration, KamLAND
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Astronomy & Astrophysics ,Astronomical and Space Sciences - Published
- 2017
24. Structural Domain Switching by Magnetic Fields in RAl$_3$C$_3$ (R=Rare Earth)
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Matsumura, T., Hayashi, Y., Takai, S., Otsubo, T., Matsuda, S., and Ochiai, A.
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Condensed Matter - Materials Science - Abstract
Hexagonal-to-orthorhombic structural transitions in RAl$_3$C$_3$ have been studied by X-ray diffraction for R=Yb, Tm, Er, Dy, and Lu. We report how orthorhombic domains are controlled by adjusting external magnetic fields. It is shown that orthorhombic domains in RAl$_3$C$_3$ can be aligned by the field when the R ion is magnetic. It is also shown that a single-domain state can be switched to another single-domain state by the field even in paramagnetic states with small induced moments. For R=Lu, however, it was not possible to change the multidomain state by a field of up to 70 kOe. We discuss that domain selection and switching are caused by magnetic anisotropies in the orthorhombic phase of RAl$_3$C$_3$. We also propose an idea to explain the field-induced antiferromagnetism revealed by Khalyavin et al. [Phys. Rev. B \textbf{87}, 220406 (2013)]., Comment: 8 pages, 10 figures, 1 table, accepted in J. Phys. Soc. Jpn
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- 2015
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25. Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment
- Author
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Collaboration, KamLAND-Zen, Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Otani, M., Oura, T., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Tachibana, H., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Banks, T. I., Berger, B. E., Fujikawa, B. K., O'Donnell, T., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
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High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
A search for double-beta decays of 136Xe to excited states of 136Ba has been performed with the first phase data set of the KamLAND-Zen experiment. The 0+1, 2+1 and 2+2 transitions of 0{\nu}\{beta}\{beta} decay were evaluated in an exposure of 89.5kg-yr of 136Xe, while the same transitions of 2{\nu}\{beta}\{beta} decay were evaluated in an exposure of 61.8kg-yr. No excess over background was found for all decay modes. The lower half-life limits of the 2+1 state transitions of 0{\nu}\{beta}\{beta} and 2{\nu}\{beta}\{beta} decay were improved to T(0{\nu}, 0+ \rightarrow 2+) > 2.6\times10^25 yr and T(2{\nu}, 0+ \rightarrow 2+) > 4.6\times10^23 yr (90% C.L.), respectively. We report on the first experimental lower half-life limits for the transitions to the 0+1 state of 136Xe for 0{\nu}\{beta}\{beta} and 2{\nu}\{beta}\{beta} decay. They are T (0{\nu}, 0+ \rightarrow 0+) > 2.4\times10^25 yr and T(2{\nu}, 0+ \rightarrow 0+) > 8.3\times10^23 yr (90% C.L.). The transitions to the 2+2 states are also evaluated for the first time to be T(0{\nu}, 0+ \rightarrow 2+) > 2.6\times10^25 yr and T(2{\nu}, 0+ \rightarrow 2+) > 9.0\times10^23 yr (90% C.L.). These results are compared to recent theoretical predictions., Comment: 16 pages, 4 figures. Published in Nuclear Physics A
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- 2015
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26. Measurements of cosmic-ray proton and helium spectra from the BESS-Polar long-duration balloon flights over Antarctica
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Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Itazaki, A., Kim, K. C., Kumazawa, T., Kusumoto, A., Lee, M. H., Makida, Y., Matsuda, S., Matsukawa, Y., Matsumoto, K., Mitchell, J. W., Myers, Z., Nishimura, J., Nozaki, M., Orito, R., Ormes, J. F., Picot-Clemente, N., Sakai, K., Sasaki, M., Seo, E. S., Shikaze, Y., Shinoda, R., Streitmatter, R. E., Suzuki, J., Takasugi, Y., Takeuchi, K., Tanaka, K., Thakur, N., Yamagami, T., Yamamoto, A., Yoshida, T., and Yoshimura, K.
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Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Instrumentation and Detectors - Abstract
The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in December 2004 and December 2007, at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the interstellar gas, and to calculations of atmospheric muons and neutrinos. We report absolute spectra at the top of the atmosphere for cosmic-ray protons in the kinetic energy range 0.2-160 GeV and helium nuclei 0.15-80 GeV/nucleon. The corresponding magnetic rigidity ranges are 0.6-160 GV for protons and 1.1-160 GV for helium. These spectra are compared to measurements from previous BESS flights and from ATIC-2, PAMELA, and AMS-02. We also report the ratio of the proton and helium fluxes from 1.1 GV to 160 GV and compare to ratios from PAMELA and AMS-02., Comment: 23 pages, 11 figures, Accepted for publication in The Astrophysical Journal
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- 2015
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27. KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars
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Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Oura, T., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Tachibana, H., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Piepke, A., Banks, T. I., Berger, B. E., Fujikawa, B. K., O'Donnell, T., Learned, J. G., Maricic, J., Matsuno, S., Sakai, M., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
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Astrophysics - High Energy Astrophysical Phenomena ,High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
In the late stages of nuclear burning for massive stars ($M>8~M_{\sun}$), the production of neutrino-antineutrino pairs through various processes becomes the dominant stellar cooling mechanism. As the star evolves, the energy of these neutrinos increases and in the days preceding the supernova a significant fraction of emitted electron anti-neutrinos exceeds the energy threshold for inverse beta decay on free hydrogen. This is the golden channel for liquid scintillator detectors because the coincidence signature allows for significant reductions in background signals. We find that the kiloton-scale liquid scintillator detector KamLAND can detect these pre-supernova neutrinos from a star with a mass of $25~M_{\sun}$ at a distance less than 690~pc with 3$\sigma$ significance before the supernova. This limit is dependent on the neutrino mass ordering and background levels. KamLAND takes data continuously and can provide a supernova alert to the community., Comment: 19 pages, 6 figures, 1 table
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- 2015
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28. Study of electron anti-neutrinos associated with gamma-ray bursts using KamLAND
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Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Oki, Y., Oura, T., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Tachibana, H., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Piepke, A., Banks, T. I., Berger, B. E., O'Donnell, T., Fujikawa, B. K., Maricic, J., Learned, J. G., Sakai, M., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
- Subjects
Astrophysics - High Energy Astrophysical Phenomena ,High Energy Physics - Experiment - Abstract
We search for electron anti-neutrinos ($\overline{\nu}_e$) from long and short-duration gamma-ray bursts~(GRBs) using data taken by the KamLAND detector from August 2002 to June 2013. No statistically significant excess over the background level is found. We place the tightest upper limits on $\overline{\nu}_e$ fluence from GRBs below 7 MeV and place first constraints on the relation between $\overline{\nu}_e$ luminosity and effective temperature., Comment: 16 pages and 5 figures
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- 2015
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29. On the Factors Controlling the Relationship Between Type of Pulsating Aurora and Energy of Pulsating Auroral Electrons: Simultaneous Observations by Arase Satellite, Ground‐Based All‐Sky Imagers and EISCAT Radar.
- Author
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Ito, Y., Hosokawa, K., Ogawa, Y., Miyoshi, Y., Tsuchiya, F., Fukizawa, M., Kasaba, Y., Kazama, Y., Oyama, S., Murase, K., Nakamura, S., Kasahara, Y., Matsuda, S., Kasahara, S., Hori, T., Yokota, S., Keika, K., Matsuoka, A., Teramoto, M., and Shinohara, I.
- Subjects
AURORAS ,ELECTRONS ,ELECTRON emission ,ELECTRON density ,INCOHERENT scattering - Abstract
Pulsating Aurora (PsA) is one of the major classes of diffuse aurora associated with precipitation of a few to a few tens of keV electrons from the magnetosphere. Recent studies suggested that, during PsA, more energetic (i.e., sub‐relativistic/relativistic) electrons precipitate into the ionosphere at the same time. Those electrons are considered to be scattered at the higher latitude part of the magnetosphere by whistler‐mode chorus waves propagating away from the magnetic equator. However, there have been no actual cases of simultaneous observations of precipitating electrons causing PsA (PsA electrons) and chorus waves propagating toward higher latitudes; thus, we still do not quite well understand under what conditions PsA electrons become harder and precipitate to lower altitudes. To address this question, we have investigated an extended interval of PsA on 12 January 2021, during which simultaneous observations with the Arase satellite, ground‐based all‐sky imagers and the European Incoherent SCATter (EISCAT) radar were conducted. We found that, when the PsA shape became patchy, the PsA electron energy increased and Arase detected intense chorus waves at magnetic latitudes above 20°, indicating the propagation of chorus waves up to higher latitudes along the field line. A direct comparison between the irregularities of the magnetospheric electron density and the emission intensity of PsA patches at the footprint of the satellite suggests that the PsA morphology and the energy of PsA electrons are determined by the presence of "magnetospheric density ducts," which allow chorus waves to travel to higher latitudes and thereby precipitate more energetic electrons. Plain Language Summary: Pulsating Aurora (PsA) is a kind of diffuse aurora associated with periodic precipitation of energetic electrons from the near‐Earth space into the atmosphere. Recent research has shown that, during PsA events, energetic particles at the sub‐relativistic energy range precipitate into the atmosphere. We speculate that such particles are scattered by wave‐particle resonance with natural electromagnetic waves, called chorus waves, at higher magnetic latitude regions. However, there has been no experimental case of PsA during which propagation of the chorus waves to higher magnetic latitudes was confirmed; thus, we still do not fully understand when and why PsA electrons become more energetic. Here, we investigate a PsA event on 12 January 2021, simultaneously observed by the Arase satellite, ground‐based all‐sky imagers and the European Incoherent SCATter (EISCAT) radar. We found that, when the PsA shape was patchy, the energy of precipitating electrons increased and chorus waves were observed at high latitudes in the magnetosphere. Comparing the magnetospheric electron density with the PsA brightness seen from the ground, we suggest that both the PsA shape and the energy of precipitating electrons were influenced by the so‐called magnetospheric ducts, which guide chorus waves to high‐latitudes regions where they interact with more energetic electrons. Key Points: Examined simultaneous observations of Pulsating Aurora (PsA) with the Arase satellite, ground‐based all‐sky imagers, and the EISCAT radarFound a relationship among the patchy PsA, the enhanced energy of PsA electrons, and the chorus wave propagation to high‐latitudes (>20°)Arase observations suggest that the observed relationship can be explained by the ducted propagation of chorus waves [ABSTRACT FROM AUTHOR]
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- 2024
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30. Myeloid Zfhx3 deficiency protects against hypercapnia-induced suppression of host defense against influenza A virus
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Casalino-Matsuda, S. Marina, primary, Chen, Fei, additional, Gonzalez-Gonzalez, Francisco J., additional, Matsuda, Hiroaki, additional, Nair, Aisha, additional, Abdala-Valencia, Hiam, additional, Budinger, G.R. Scott, additional, Dong, Jin-Tang, additional, Beitel, Greg J., additional, and Sporn, Peter H.S., additional
- Published
- 2024
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31. Predictive Factors and Effects of Replaced Rectorectal Intussusception on Functional Outcomes in Patients with Rectoanal Intussusception Who Have Undergone Laparoscopic Ventral Rectopexy
- Author
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Oka, Naoki, Tsunoda, A., Takahashi, T., Matsuda, S., and Kusanagi, H.
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- 2021
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32. A SEARCH FOR ELECTRON ANTINEUTRINOS ASSOCIATED WITH GRAVITATIONAL-WAVE EVENTS GW150914 AND GW151226 USING KAMLAND
- Author
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Gando, A, Gando, Y, Hachiya, T, Hayashi, A, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Karino, Y, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Obara, S, Oura, T, Ozaki, H, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Takai, T, Tamae, K, Teraoka, Y, Ueshima, K, Watanabe, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Piepke, A, Banks, TI, Berger, BE, Fujikawa, BK, O’Donnell, T, Learned, JG, Maricic, J, Sakai, M, Winslow, LA, Krupczak, E, Ouellet, J, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
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gravitational waves ,neutrinos ,astro-ph.HE ,hep-ex ,nucl-ex ,Astronomical and Space Sciences ,Astronomy & Astrophysics - Abstract
We present a search, using KamLAND, a kiloton-scale anti-neutrino detector, for low-energy anti-neutrino events that were coincident with the gravitational-wave (GW) events GW150914 and GW151226, and the candidate event LVT151012. We find no inverse beta-decay neutrino events within ±500 s of either GW signal. This non-detection is used to constrain the electron anti-neutrino fluence and the total integrated luminosity of the astrophysical sources.
- Published
- 2016
33. Publisher’s Note: Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen [Phys. Rev. Lett. 117, 082503 (2016)]
- Author
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Gando, A, Gando, Y, Hachiya, T, Hayashi, A, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Karino, Y, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Obara, S, Oura, T, Ozaki, H, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Takai, T, Tamae, K, Teraoka, Y, Ueshima, K, Watanabe, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Banks, TI, Berger, BE, Fujikawa, BK, O'Donnell, T, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
- Subjects
Particle and High Energy Physics ,Physical Sciences ,KamLAND-Zen Collaboration ,Mathematical Sciences ,Engineering ,General Physics ,Mathematical sciences ,Physical sciences - Abstract
This corrects the article DOI: 10.1103/PhysRevLett.117.082503.
- Published
- 2016
34. Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen
- Author
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Gando, A, Gando, Y, Hachiya, T, Hayashi, A, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Karino, Y, Koga, M, Matsuda, S, Mitsui, T, Nakamura, K, Obara, S, Oura, T, Ozaki, H, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Takai, T, Tamae, K, Teraoka, Y, Ueshima, K, Watanabe, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Banks, TI, Berger, BE, Fujikawa, BK, O'Donnell, T, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
- Subjects
Nuclear and Plasma Physics ,Particle and High Energy Physics ,Physical Sciences ,KamLAND-Zen Collaboration ,hep-ex ,nucl-ex ,physics.ins-det ,Mathematical Sciences ,Engineering ,General Physics ,Mathematical sciences ,Physical sciences - Abstract
We present an improved search for neutrinoless double-beta (0νββ) decay of ^{136}Xe in the KamLAND-Zen experiment. Owing to purification of the xenon-loaded liquid scintillator, we achieved a significant reduction of the ^{110m}Ag contaminant identified in previous searches. Combining the results from the first and second phase, we obtain a lower limit for the 0νββ decay half-life of T_{1/2}^{0ν}>1.07×10^{26} yr at 90% C.L., an almost sixfold improvement over previous limits. Using commonly adopted nuclear matrix element calculations, the corresponding upper limits on the effective Majorana neutrino mass are in the range 61-165 meV. For the most optimistic nuclear matrix elements, this limit reaches the bottom of the quasidegenerate neutrino mass region.
- Published
- 2016
35. KamLAND SENSITIVITY TO NEUTRINOS FROM PRE-SUPERNOVA STARS
- Author
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Asakura, K, Gando, A, Gando, Y, Hachiya, T, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Ishikawa, T, Ishio, S, Koga, M, Matsuda, S, Mitsui, T, Motoki, D, Nakamura, K, Obara, S, Oura, T, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Tachibana, H, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Piepke, A, Banks, TI, Berger, BE, Fujikawa, BK, O’Donnell, T, Learned, JG, Maricic, J, Matsuno, S, Sakai, M, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
- Subjects
neutrinos ,supernovae: general ,astro-ph.HE ,hep-ex ,physics.ins-det ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Physical Chemistry (incl. Structural) ,Astronomy & Astrophysics - Abstract
In the late stages of nuclear burning for massive stars (M > 8 Mȯ), the production of neutrino-antineutrino pairs through various processes becomes the dominant stellar cooling mechanism. As the star evolves, the energy of these neutrinos increases and in the days preceding the supernova a significant fraction of emitted electron anti-neutrinos exceeds the energy threshold for inverse beta decay on free hydrogen. This is the golden channel for liquid scintillator detectors because the coincidence signature allows for significant reductions in background signals. We find that the kiloton-scale liquid scintillator detector KamLAND can detect these pre-supernova neutrinos from a star with a mass of 25 Mȯ at a distance less than 690 pc with 3σ significance before the supernova. This limit is dependent on the neutrino mass ordering and background levels. KamLAND takes data continuously and can provide a supernova alert to the community.
- Published
- 2016
36. KamLAND SENSITIVITY TO NEUTRINOS FROM PRE-SUPERNOVA STARS
- Author
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The KamLAND Collaboration, Asakura, K, Gando, A, Gando, Y, Hachiya, T, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Ishikawa, T, Ishio, S, Koga, M, Matsuda, S, Mitsui, T, Motoki, D, Nakamura, K, Obara, S, Oura, T, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Tachibana, H, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Piepke, A, Banks, TI, Berger, BE, Fujikawa, BK, O'Donnell, T, Learned, JG, Maricic, J, Matsuno, S, Sakai, M, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
- Subjects
neutrinos ,supernovae: general ,astro-ph.HE ,hep-ex ,physics.ins-det ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Physical Chemistry (incl. Structural) ,Astronomy & Astrophysics - Abstract
In the late stages of nuclear burning for massive stars (M > 8 Mȯ), the production of neutrino-antineutrino pairs through various processes becomes the dominant stellar cooling mechanism. As the star evolves, the energy of these neutrinos increases and in the days preceding the supernova a significant fraction of emitted electron anti-neutrinos exceeds the energy threshold for inverse beta decay on free hydrogen. This is the golden channel for liquid scintillator detectors because the coincidence signature allows for significant reductions in background signals. We find that the kiloton-scale liquid scintillator detector KamLAND can detect these pre-supernova neutrinos from a star with a mass of 25 Mȯ at a distance less than 690 pc with 3σ significance before the supernova. This limit is dependent on the neutrino mass ordering and background levels. KamLAND takes data continuously and can provide a supernova alert to the community.
- Published
- 2016
37. Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment
- Author
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Asakura, K, Gando, A, Gando, Y, Hachiya, T, Hayashida, S, Ikeda, H, Inoue, K, Ishidoshiro, K, Ishikawa, T, Ishio, S, Koga, M, Matsuda, S, Mitsui, T, Motoki, D, Nakamura, K, Obara, S, Otani, M, Oura, T, Shimizu, I, Shirahata, Y, Shirai, J, Suzuki, A, Tachibana, H, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Yoshida, H, Kozlov, A, Takemoto, Y, Yoshida, S, Fushimi, K, Banks, TI, Berger, BE, Fujikawa, BK, O'Donnell, T, Winslow, LA, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, and Decowski, MP
- Subjects
Nuclear and Plasma Physics ,Particle and High Energy Physics ,Physical Sciences ,Clinical Research ,Double-beta decay ,Xe-136 ,Excited state ,hep-ex ,physics.ins-det ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Quantum Physics ,Nuclear & Particles Physics ,Astronomical sciences ,Nuclear and plasma physics ,Particle and high energy physics - Abstract
A search for double-beta decays of 136Xe to excited states of 136Ba has been performed with the first phase data set of the KamLAND-Zen experiment. The 01+, 21+ and 22+ transitions of 0νββ decay were evaluated in an exposure of 89.5 kg⋅yr of 136Xe, while the same transitions of 2νββ decay were evaluated in an exposure of 61.8 kg⋅yr. No excess over background was found for all decay modes. The lower half-life limits of the 21+ state transitions of 0νββ and 2νββ decay were improved to T1/20ν(0+→21+)>2.6×1025 yr and T1/22ν(0+→21+)>4.6×1023 yr (90% C.L.), respectively. We report on the first experimental lower half-life limits for the transitions to the 01+ state of 136Xe for 0νββ and 2νββ decay. They are T1/20ν(0+→01+)>2.4×1025 yr and T1/22ν(0+→01+)>8.3×1023 yr (90% C.L.). The transitions to the 22+ states are also evaluated for the first time to be T1/20ν(0+→22+)>2.6×1025 yr and T1/22ν(0+→22+)>9.0×1023 yr (90% C.L.). These results are compared to recent theoretical predictions.
- Published
- 2016
38. Search for double-beta decay of 136Xe to excited states of 136Ba with the KamLAND-Zen experiment
- Author
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Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Otani, M., Oura, T., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Tachibana, H., Tamae, K., Ueshima, K., Watanabe, H., Xu, B.D., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Banks, T.I., Berger, B.E., Fujikawa, B.K., O'Donnell, T., Winslow, L.A., Efremenko, Y., Karwowski, H.J., Markoff, D.M., Tornow, W., Detwiler, J.A., Enomoto, S., and Decowski, M.P.
- Published
- 2016
39. 7Be Solar Neutrino Measurement with KamLAND
- Author
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Gando, A., Gando, Y., Hanakago, H., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, H., Kishimoto, Y., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakajima, K., Nakamura, K., Obata, A., Oki, A., Oki, Y., Otani, M., Shimizu, I., Shirai, J., Suzuki, A., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamada, S., Yamauchi, Y., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Grant, C., Keefer, G., McKee, D. W., Piepke, A., Banks, T. I., Bloxham, T., Freedman, S. J., Fujikawa, B. K., Han, K., Hsu, L., Ichimura, K., Murayama, H., O'Donnell, T., Steiner, H. M., Winslow, L. A., Dwyer, D., Mauger, C., McKeown, R. D., Zhang, C., Berger, B. E., Lane, C. E., Maricic, J., Miletic, T., Learned, J. G., Sakai, M., Horton-Smith, G. A., Tang, A., Downum, K. E., Tolich, K., Efremenko, Y., Kamyshkov, Y., Perevozchikov, O., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., Heeger, K., and Decowski, M. P.
- Subjects
High Energy Physics - Experiment ,Astrophysics - Solar and Stellar Astrophysics ,Nuclear Experiment - Abstract
We report a measurement of the neutrino-electron elastic scattering rate of 862 keV 7Be solar neutrinos based on a 165.4 kton-day exposure of KamLAND. The observed rate is 582 +/- 90 (kton-day)^-1, which corresponds to a 862 keV 7Be solar neutrino flux of (3.26 +/- 0.50) x 10^9 cm^-2s^-1, assuming a pure electron flavor flux. Comparing this flux with the standard solar model prediction and further assuming three flavor mixing, a nu_e survival probability of 0.66 +/- 0.14 is determined from the KamLAND data. Utilizing a global three flavor oscillation analysis, we obtain a total 7Be solar neutrino flux of (5.82 +/- 0.98) x 10^9 cm^-2s^-1, which is consistent with the standard solar model predictions., Comment: 8 pages, 6 figures, submitted to Phys. Rev. C
- Published
- 2014
- Full Text
- View/download PDF
40. Development of Hybrid TiO2/Paint Sludge Extracted Microbe Composite for Enhanced Photocatalytic Dye Degradation
- Author
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Santhana, V., Thangaraju, D., Tanaka, A., Inami, W., JayaKumar, S., and Matsuda, S.
- Published
- 2020
- Full Text
- View/download PDF
41. solar neutrino measurement with KamLAND
- Author
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Gando, A., Gando, Y., Hanakago, H., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, H., Kishimoto, Y., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakajima, K., Nakamura, K., Obata, A., Oki, A., Oki, Y., Otani, M., Shimizu, I., Shirai, J., Suzuki, A., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamada, S., Yamauchi, Y., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Grant, C., Keefer, G., McKee, D. W., Piepke, A., Banks, T. I., Bloxham, T., Freedman, S. J., Fujikawa, B. K., Han, K., Hsu, L., Ichimura, K., Murayama, H., O'Donnell, T., Steiner, H. M., Winslow, L. A., Dwyer, D., Mauger, C., McKeown, R. D., Zhang, C., Berger, B. E., Lane, C. E., Maricic, J., Miletic, T., Learned, J. G., Sakai, M., Horton-Smith, G. A., Tang, A., Downum, K. E., Tolich, K., Efremenko, Y., Kamyshkov, Y., Perevozchikov, O., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., Heeger, K., and Decowski, M. P.
- Published
- 2015
42. Be 7 solar neutrino measurement with KamLAND
- Author
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Gando, A, Gando, Y, Hanakago, H, Ikeda, H, Inoue, K, Ishidoshiro, K, Ishikawa, H, Kishimoto, Y, Koga, M, Matsuda, R, Matsuda, S, Mitsui, T, Motoki, D, Nakajima, K, Nakamura, K, Obata, A, Oki, A, Oki, Y, Otani, M, Shimizu, I, Shirai, J, Suzuki, A, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Yamada, S, Yamauchi, Y, Yoshida, H, Kozlov, A, Takemoto, Y, Yoshida, S, Grant, C, Keefer, G, McKee, DW, Piepke, A, Banks, TI, Bloxham, T, Freedman, SJ, Fujikawa, BK, Han, K, Hsu, L, Ichimura, K, Murayama, H, O'Donnell, T, Steiner, HM, Winslow, LA, Dwyer, D, Mauger, C, McKeown, RD, Zhang, C, Berger, BE, Lane, CE, Maricic, J, Miletic, T, Learned, JG, Sakai, M, Horton-Smith, GA, Tang, A, Downum, KE, Tolich, K, Efremenko, Y, Kamyshkov, Y, Perevozchikov, O, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, Heeger, K, and Decowski, MP
- Subjects
hep-ex ,astro-ph.SR ,nucl-ex ,Nuclear & Particles Physics ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics - Abstract
We report a measurement of the neutrino-electron elastic scattering rate of 862 keV Be7 solar neutrinos based on a 165.4 kt d exposure of KamLAND. The observed rate is 582±94(kt d)-1, which corresponds to an 862-keV Be7 solar neutrino flux of (3.26±0.52)×109cm-2s-1, assuming a pure electron-flavor flux. Comparing this flux with the standard solar model prediction and further assuming three-flavor mixing, a νe survival probability of 0.66±0.15 is determined from the KamLAND data. Utilizing a global three-flavor oscillation analysis, we obtain a total Be7 solar neutrino flux of (5.82±1.02)×109cm-2s-1, which is consistent with the standard solar model predictions.
- Published
- 2015
43. Be7 solar neutrino measurement with KamLAND
- Author
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Gando, A, Gando, Y, Hanakago, H, Ikeda, H, Inoue, K, Ishidoshiro, K, Ishikawa, H, Kishimoto, Y, Koga, M, Matsuda, R, Matsuda, S, Mitsui, T, Motoki, D, Nakajima, K, Nakamura, K, Obata, A, Oki, A, Oki, Y, Otani, M, Shimizu, I, Shirai, J, Suzuki, A, Tamae, K, Ueshima, K, Watanabe, H, Xu, BD, Yamada, S, Yamauchi, Y, Yoshida, H, Kozlov, A, Takemoto, Y, Yoshida, S, Grant, C, Keefer, G, McKee, DW, Piepke, A, Banks, TI, Bloxham, T, Freedman, SJ, Fujikawa, BK, Han, K, Hsu, L, Ichimura, K, Murayama, H, O'Donnell, T, Steiner, HM, Winslow, LA, Dwyer, D, Mauger, C, McKeown, RD, Zhang, C, Berger, BE, Lane, CE, Maricic, J, Miletic, T, Learned, JG, Sakai, M, Horton-Smith, GA, Tang, A, Downum, KE, Tolich, K, Efremenko, Y, Kamyshkov, Y, Perevozchikov, O, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S, Heeger, K, and Decowski, MP
- Subjects
Nuclear and Plasma Physics ,Particle and High Energy Physics ,Physical Sciences ,hep-ex ,astro-ph.SR ,nucl-ex ,Nuclear and plasma physics - Abstract
We report a measurement of the neutrino-electron elastic scattering rate of 862 keV Be7 solar neutrinos based on a 165.4 kt d exposure of KamLAND. The observed rate is 582±94(kt d)-1, which corresponds to an 862-keV Be7 solar neutrino flux of (3.26±0.52)×109cm-2s-1, assuming a pure electron-flavor flux. Comparing this flux with the standard solar model prediction and further assuming three-flavor mixing, a νe survival probability of 0.66±0.15 is determined from the KamLAND data. Utilizing a global three-flavor oscillation analysis, we obtain a total Be7 solar neutrino flux of (5.82±1.02)×109cm-2s-1, which is consistent with the standard solar model predictions.
- Published
- 2015
44. Search for the proton decay mode with KamLAND
- Author
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Asakura, K., Gando, A., Gando, Y., Hachiya, T., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, T., Ishio, S., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Obara, S., Oki, Y., Oura, T., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Tachibana, H., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamauchi, Y., Yoshida, H., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Grant, C., Piepke, A., Banks, T. I., Berger, B. E., Freedman, S. J., Fujikawa, B. K., O’Donnell, T., Learned, J. G., Maricic, J., Sakai, M., Dazeley, S., Svoboda, R., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., and Decowski, M. P.
- Published
- 2015
45. CeLAND: search for a 4th light neutrino state with a 3 PBq 144Ce-144Pr electron antineutrino generator in KamLAND
- Author
-
Gando, A., Gando, Y., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, H., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Oki, Y., Otani, M., Shimizu, I., Shirai, J., Suekane, F., Suzuki, A., Takemoto, Y., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamada, S., Yamauchi, Y., Yoshida, H., Cribier, M., Durero, M., Fischer, V., Gaffiot, J., Jonqueres, N., Kouchner, A., Lasserre, T., Leterme, D., Letourneau, A., Lhuillier, D., Mention, G., Rampal, G., Scola, L., Veyssiere, Ch., Vivier, M., Yala, P., Berger, B. E., Kozlov, A., Banks, T., Dwyer, D., Fujikawa, B. K., Han, K., Kolomensky, Yu. G., Mei, Y., O'Donnell, T., Decowski, P., Markoff, D. M., Yoshida, S., Kornoukhov, V. N., Gelis, T. V. M., Tikhomirov, G. V., Learned, J. G., Maricic, J., Matsuno, S., Milincic, R., Karwowski, H. J., Efremenko, Y., Detwiler, A., and Enomoto, S.
- Subjects
Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
The reactor neutrino and gallium anomalies can be tested with a 3-4 PBq (75-100 kCi scale) 144Ce-144Pr antineutrino beta-source deployed at the center or next to a large low-background liquid scintillator detector. The antineutrino generator will be produced by the Russian reprocessing plant PA Mayak as early as 2014, transported to Japan, and deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND) as early as 2015. KamLAND's 13 m diameter target volume provides a suitable environment to measure the energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, sterile neutrino state. This will provide a comprehensive test of the electron dissaperance neutrino anomalies and could lead to the discovery of a 4th neutrino state for Delta_m^2 > 0.1 eV^2 and sin^2(2theta) > 0.05., Comment: 67 pages, 50 figures. Th. Lasserre thanks the European Research Council for support under the Starting Grant StG-307184
- Published
- 2013
46. White paper: CeLAND - Investigation of the reactor antineutrino anomaly with an intense 144Ce-144Pr antineutrino source in KamLAND
- Author
-
Gando, A., Gando, Y., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Ishikawa, H., Koga, M., Matsuda, R., Matsuda, S., Mitsui, T., Motoki, D., Nakamura, K., Oki, Y., Otani, M., Shimizu, I., Shirai, J., Suekane, F., Suzuki, A., Takemoto, Y., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamada, S., Yamauchi, Y., Yoshida, H., Banks, T., Berger, B. E., Cribier, M., Decowski, P., Detwiler, J. A., Durero, M., Dwyer, D., Efremenko, Y., Enomoto, S., Fischer, V., Fujikawa, B. K., Gaffiot, J., Gelis, V. M., Karwowski, H. J., Kolomensky, Yu. G., Kozlov, A., Kornoukhov, V. N., Lasserre, T., Learned, J. G., Letourneau, A., Lhuillier, D., Maricic, J., Markoff, D. M., Matsuno, S., Mention, G., Milincic, R., ODonnell, T., Saldikov, I. S., Scola, L., Tikhomirov, G. V., Veyssiere, Ch., Vivier, M., and Yoshida, S.
- Subjects
High Energy Physics - Experiment - Abstract
We propose to test for short baseline neutrino oscillations, implied by the recent reevaluation of the reactor antineutrino flux and by anomalous results from the gallium solar neutrino detectors. The test will consist of producing a 75 kCi 144Ce - 144Pr antineutrino source to be deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND). KamLAND's 13m diameter target volume provides a suitable environment to measure energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, "sterile" state. Such a measurement will be free of any reactor-related uncertainties. After 1.5 years of data taking the Reactor Antineutrino Anomaly parameter space will be tested at > 95% C.L., Comment: White paper prepared for Snowmass-2013; slightly different author list
- Published
- 2013
47. Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae
- Author
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Miyoshi, Y., Hosokawa, K., Kurita, S., Oyama, S.-I., Ogawa, Y., Saito, S., Shinohara, I., Kero, A., Turunen, E., Verronen, P. T., Kasahara, S., Yokota, S., Mitani, T., Takashima, T., Higashio, N., Kasahara, Y., Matsuda, S., Tsuchiya, F., Kumamoto, A., Matsuoka, A., Hori, T., Keika, K., Shoji, M., Teramoto, M., Imajo, S., Jun, C., and Nakamura, S.
- Published
- 2021
- Full Text
- View/download PDF
48. Limits on Majoron-emitting double-beta decays of Xe-136 in the KamLAND-Zen experiment
- Author
-
Collaboration, KamLAND-Zen, Gando, A., Gando, Y., Hanakago, H., Ikeda, H., Inoue, K., Kato, R., Koga, M., Matsuda, S., Mitsui, T., Nakada, T., Nakamura, K., Obata, A., Oki, A., Ono, Y., Shimizu, I., Shirai, J., Suzuki, A., Takemoto, Y., Tamae, K., Ueshima, K., Watanabe, H., Xu, B. D., Yamada, S., Yoshida, H., Kozlov, A., Yoshida, S., Banks, T. I., Detwiler, J. A., Freedman, S. J., Fujikawa, B. K., Han, K., O'Donnell, T., Berger, B. E., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Enomoto, S., and Decowski, M. P.
- Subjects
High Energy Physics - Experiment ,Nuclear Experiment - Abstract
We present limits on Majoron-emitting neutrinoless double-beta decay modes based on an exposure of 112.3 days with 125 kg of Xe-136. In particular, a lower limit on the ordinary (spectral index n = 1) Majoron-emitting decay half-life of Xe-136 is obtained as T_{1/2}^{0\nu\chi^{0}} > 2.6 x 10^{24} yr at 90% C.L., a factor of five more stringent than previous limits. The corresponding upper limit on the effective Majoron-neutrino coupling, using a range of available nuclear matrix calculations, is
< (0.8 - 1.6) x 10^{-5}. This excludes a previously unconstrained region of parameter space and strongly limits the possible contribution of ordinary Majoron emission modes to 0\nu\beta\beta decay for neutrino masses in the inverted hierarchy scheme., Comment: 4 pages, 3 figures (1 figure added). Published version in PRC rapid communication - Published
- 2012
- Full Text
- View/download PDF
49. Search for Antihelium with the BESS-Polar Spectrometer
- Author
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Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Itazaki, A., Kim, K. C., Kumazawa, T., Kusumoto, A., Lee, M. H., Makida, Y., Matsuda, S., Matsukawa, Y., Matsumoto, K., Mitchell, J. W., Myers, Z., Nishimura, J., Nozaki, M., Orito, R., Ormes, J. F., Sakai, K., Sasaki, M., Seo, E. S., Shikaze, Y., Shinoda, R., Streitmatter, R. E., Suzuki, J., Takasugi, Y., Takeuchi, K., Tanaka, K., Thakur, N., Yamagami, T., Yamamoto, A., Yoshida, T., and Yoshimura, K.
- Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
In two long-duration balloon flights over Antarctica, the BESS-Polar collaboration has searched for antihelium in the cosmic radiation with higher sensitivity than any reported investigation. BESS- Polar I flew in 2004, observing for 8.5 days. BESS-Polar II flew in 2007-2008, observing for 24.5 days. No antihelium candidate was found in BESS-Polar I data among 8.4\times 10^6 |Z| = 2 nuclei from 1.0 to 20 GV or in BESS-Polar II data among 4.0\times 10^7 |Z| = 2 nuclei from 1.0 to 14 GV. Assuming antihelium to have the same spectral shape as helium, a 95% confidence upper limit of 6.9 \times 10^-8 was determined by combining all the BESS data, including the two BESS-Polar flights. With no assumed antihelium spectrum and a weighted average of the lowest antihelium efficiencies from 1.6 to 14 GV, an upper limit of 1.0 \times 10^-7 was determined for the combined BESS-Polar data. These are the most stringent limits obtained to date., Comment: 4 pages, 4 figures
- Published
- 2012
- Full Text
- View/download PDF
50. Measurement of the cosmic-ray antiproton spectrum at solar minimum with a long-duration balloon flight over Antarctica
- Author
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Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Kim, K. C., Kusumoto, A., Lee, M. H., Makida, Y., Matsuda, S., Matsukawa, Y., Mitchell, J. W., Nishimura, J., Nozaki, M., Orito, R., Ormes, J. F., Sakai, K., Sasaki, M., Seo, E. S., Shinoda, R., Streitmatter, R. E., Suzuki, J., Tanaka, K., Thakur, N., Yamagami, T., Yamamoto, A., Yoshida, T., and Yoshimura, K.
- Subjects
Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Astrophysics - Astrophysics of Galaxies - Abstract
The energy spectrum of cosmic-ray antiprotons from 0.17 to 3.5 GeV has been measured using 7886 antiprotons detected by BESS-Polar II during a long-duration flight over Antarctica near solar minimum in December 2007 and January 2008. This shows good consistency with secondary antiproton calculations. Cosmologically primary antiprotons have been investigated by comparing measured and calculated antiproton spectra. BESS-Polar II data show no evidence of primary antiprotons from evaporation of primordial black holes., Comment: 4 pages, 4 figures, submitted to Physical Review Letters
- Published
- 2011
- Full Text
- View/download PDF
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