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38th International Cosmic Ray Conference, ICRC 2023

作者： D’Amico, Giacomo Strišković, Jelena Terzić, Tomislav Abe, H. Abe, S. Abhir, J. Acciari, V.A. Agudo, I. Aniello, T. Ansoldi, S. Antonelli, L.A. Arbet Engels, A. Arcaro, C. Artero, M. Asano, K. Baack, D. Babić, A. Baquero, A. Barres de Almeida, U. Barrio, J.A. Batković, I. Baxter, J. Becerra González, J. Bednarek, W. Bernardini, E. Bernardos, M. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Burelli, I. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-Tirado, A.J. Ceribella, G. Chai, Y. Chilingarian, A. Cifuentes, A. Cikota, S. Colombo, E. Contreras, J.L. Cortina, J. Covino, S. D’Amico, G. D’Elia, V. Da Vela, P. Dazzi, F. De Angelis, A. De Lotto, B. Del Popolo, A. Delfino, M. Delgado, J. Delgado Mendez, C. Depaoli, D. Di Pierro, F. Di Venere, L. Dominis Prester, D. Donini, A. Dorner, D. Doro, M. Elsaesser, D. Emery, G. Escudero, J. Fariña, L. Fattorini, A. Foffano, L. Font, L. Fröse, S. Fukami, S. Fukazawa, Y. García López, R.J. Garczarczyk, M. Gasparyan, S. Gaug, M. Giesbrecht Paiva, J.G. Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Grau, R. Green, D. Green, J.G. Hadasch, D. Hahn, A. Hassan, T. Heckmann, L. Herrera, J. Hrupec, D. Hütten, M. Imazawa, R. Inada, T. Iotov, R. Ishio, K. Jiménez Martínez, I. Jormanainen, J. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez Lezáun, M. Lamastra, A. Lelas, D. Leone, F. Lindfors, E. Linhoff, L. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Lorini, A. Lyard, E. Machado de Oliveira Fraga, B. Majumdar, P. Makariev, M. Maneva, G. Mang, N. Manganaro, M. Mangano, S. Mannheim, K. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, S. Mender, S. Mićanović, S. Miceli, D. Miener, T. Miranda, J.M. Mirzoyan, R. Molero González, M. Molina, E. Mondal, H.A. Moralejo, A. Morcuende, D. Nakamori, T. Nanci, C. Nava, L. Department for Physics and Technology University of Bergen Allégaten 55 Bergen5007 Norway Josip Juraj Strossmayer University of Osijek Department of Physics Osijek31000 Croatia Faculty of Physics University of Rijeka Radmile Matječić 2 Rijeka51000 Croatia The University of Tokyo Chiba Kashiwa277-8582 Japan ETH Zürich ZürichCH-8093 Switzerland Instituto de Astrofísica de Canarias Dpto. de Astrofísica Universidad de La Laguna Tenerife La LagunaE-38200 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain RomeI-00136 Italy Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik MünchenD-80805 Germany Università di Padova INFN PadovaI-35131 Italy Bellaterra BarcelonaE-08193 Spain Technische Universität Dortmund DortmundD-44221 Germany Zagreb10000 Croatia IPARCOS Institute EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain URCA RJ Rio de Janeiro22290-180 Brazil University of Lodz Faculty of Physics and Applied Informatics Department of Astrophysics Lodz90-236 Poland Centro de Investigaciones Energéticas Medioambientales y Tecnológicas MadridE-28040 Spain Departament de Física CERES-IEEC Universitat Autònoma de Barcelona BellaterraE-08193 Spain Università di Pisa INFN Pisa PisaI-56126 Italy Universitat de Barcelona ICCUB IEEC-UB BarcelonaE-08028 Spain Armenian MAGIC Group A. Alikhanyan National Science Laboratory Yerevan0036 Armenia INFN MAGIC Group INFN Sezione di Catania Dipartimento di Fisica e Astronomia University of Catania CataniaI-95123 Italy INFN MAGIC Group INFN Sezione di Torino Università degli Studi di Torino TorinoI-10125 Italy INFN MAGIC Group INFN Sezione di Bari Dipartimento Interateneo di Fisica dell’Università e del Politecnico di Bari BariI-70125 Italy Croatian MAGIC Group University of Rijeka Faculty of Physics Rijeka51000 Croatia Universität Würzburg WürzburgD-97074 Germany University of

An extraordinary flare from blazar Mrk 421 was recorded on the night of April 24, 2014, by the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes at very high energy (VHE) from 100 GeV up to 10 TeV. Several quantum-gravity models indicate that the photon group velocity in vacuum may be energy dependent, known as in-vacuum dispersion. Violation of Lorentz Invariance (LIV) of this kind can lead to an observable effect on the time of flight of VHE photons from cosmic origin. Observations of fast and distant phenomena, such as the flare from Mrk 421, are excellent testing grounds for this hypothesis. Using an innovative binned likelihood analysis, for the first time from this source we were able to search for arrival-time delays scaling linearly or quadratically with the energy of the photon. The non-detection of energy-dependent time delays led us to set constraints on the parameter space of quantum-gravity predictions. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Photons

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Implementation of Augmented Reality in Pretend Play Therapy for Children with Autism Spectrum Disorder

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Journal of Physics: Conference Series 2019年第1期1235卷

作者： M F Syahputra A P Angkasih S Purnamawati U Andayani D Abdullah S Sriadhi A Iskandar T M Rosida J Fitriany I N Sari M D Utama R F Nanuru Department of Information Technology Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia Department of Informatics Universitas Malikussaleh Aceh Utara Indonesia Department of Electrical Engineering Universitas Negeri Medan Indonesia Informatics Engineering STMIK AKBA Makassar Indonesia Graduate Program in Scientific Psychology Universitas Kristen Maranatha Indonesia Department of Pediatric Universitas Malikussaleh Aceh Utara Indonesia Departement of Social Science Education Program Post Graduate Program Universitas Kanjuruhan Malang Malang Indonesia Faculty of Social and Political Science Universitas Kristen Indonesia Maluku Indonesia Universitas Kristen Indonesia Maluku Ambon Indonesia

Autism Spectrum Disorder is a pervasive developmental disorder that will affect children in terms of interpersonal communication, social interaction, and imaginative levels in play. Many therapies to help the motor neuron performance is one of them Pretend Play. Pretend Play is a therapy that invites children in playing to demonstrate something else and tell how to use objects that are considered in the child's imagination. However, in the era of highly developed technology, many fields have used the Augmented Reality method as a visualization of various aspects. With this method researchers will present the therapeutic visualization of the block to 3D transportation tool that is useful for strengthening motor nerves and visual strength of the child. The system can run well during marker detection, marker movement, and 3D object display with the accuracy of precision angle and distance between virtual world with real world reach 100% with angle 0 at distance 31 cm and the maximum distance from the marker is 46 cm and the maximum angle is 30˚.

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The repertoire of mutational signatures in human cancer (vol 578, pg 94, 2020)

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NATURE 2023年第7948期614卷 E41-E41页

作者： Alexandrov, Ludmil B. Kim, Jaegil Haradhvala, Nicholas J. Huang, Mi Ni Ng, Alvin Wei Tian Wu, Yang Boot, Arnoud Covington, Kyle R. Gordenin, Dmitry A. Bergstrom, Erik N. Islam, S. M. Ashiqul Lopez-Bigas, Nuria Klimczak, Leszek J. McPherson, John R. Morganella, Sandro Sabarinathan, Radhakrishnan Wheeler, David A. Mustonen, Ville Getz, Gad Rozen, Steven G. Stratton, Michael R. Department of Cellular and Molecular Medicine Department of Bioengineering Moores Cancer Center University of California San Diego CA USA Wellcome Sanger Institute Wellcome Genome Campus Hinxton UK Department of Cellular and Molecular Medicine and Department of Bioengineering University of California San Diego La Jolla CA USA UC San Diego Moores Cancer Center San Diego CA USA University of California San Diego San Diego CA USA Broad Institute of MIT and Harvard Cambridge MA USA Center for Cancer Research Massachusetts General Hospital Boston MA USA Massachusetts General Hospital Boston MA USA Department of Pathology Massachusetts General Hospital Boston MA USA Harvard Medical School Boston MA USA Laboratory for Medical Science Mathematics RIKEN Center for Integrative Medical Sciences Yokohama Japan Computational Biology Program Ontario Institute for Cancer Research Toronto ON Canada Programme in Cancer & Stem Cell Biology Duke-NUS Medical School Singapore Singapore Centre for Computational Biology Duke-NUS Medical School Singapore Singapore Programme in Cancer and Stem Cell Biology Duke-NUS Medical School Singapore Singapore Programme in Cancer and Stem Cell Biology Centre for Computational Biology Duke-NUS Medical School Singapore Singapore SingHealth Duke-NUS Institute of Precision Medicine National Heart Centre Singapore Singapore Singapore Cancer Science Institute of Singapore National University of Singapore Singapore Singapore Institute of Molecular and Cell Biology Singapore Singapore Laboratory of Cancer Epigenome Division of Medical Science National Cancer Centre Singapore Singapore Singapore Duke-NUS Medical School Singapore Singapore Human Genome Sequencing Center Baylor College of Medicine Houston TX USA Dan L. Duncan Cancer Center Baylor College of Medicine Houston TX USA Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA Genome Integrity and Structural Biology Laboratory National Ins

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Patterns of somatic structural variation in human cancer genomes (vol 578, pg 112, 2020)

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NATURE 2023年第7948期614卷 E38-E38页

作者： Li, Yilong Roberts, Nicola D. Wala, Jeremiah A. Shapira, Ofer Schumacher, Steven E. Kumar, Kiran Khurana, Ekta Waszak, Sebastian Korbel, Jan O. Haber, James E. Imielinski, Marcin Weischenfeldt, Joachim Beroukhim, Rameen Campbell, Peter J. Cancer Genome Project Wellcome Trust Sanger Institute Hinxton UK Totient Inc Cambridge MA USA Wellcome Sanger Institute Wellcome Genome Campus Hinxton UK Department of Haematology University of Cambridge Cambridge UK Cambridge University Hospitals NHS Foundation Trust Cambridge UK Korea Advanced Institute of Science and Technology Daejeon South Korea Department of Zoology Genetics and Physical Anthropology University of Santiago de Compostela Santiago de Compostela Spain Centre for Research in Molecular Medicine and Chronic Diseases (CIMUS) University of Santiago de Compostela Santiago de Compostela Spain The Biomedical Research Centre (CINBIO) University of Vigo Vigo Spain Centre for Research in Molecular Medicine and Chronic Diseases (CiMUS) Universidade de Santiago de Compostela Santiago de Compostela Spain Department of Zoology Genetics and Physical Anthropology (CiMUS) Universidade de Santiago de Compostela Santiago de Compostela Spain The Biomedical Research Centre (CINBIO) Universidade de Vigo Vigo Spain The Broad Institute of Harvard and MIT Cambridge MA USA Bioinformatics and Integrative Genomics Harvard University Cambridge MA USA Department of Cancer Biology Dana-Farber Cancer Institute Boston MA USA Broad Institute of MIT and Harvard Cambridge MA USA Department of Medical Oncology Dana-Farber Cancer Institute Boston MA USA Harvard Medical School Boston MA USA Massachusetts General Hospital Center for Cancer Research Charlestown MA USA Dana-Farber Cancer Institute Boston MA USA Department of Biostatistics and Computational Biology Dana-Farber Cancer Institute and Harvard Medical School Boston MA USA Weill Cornell Medical College New York NY USA Department of Physiology and Biophysics Weill Cornell Medicine New York NY USA Institute for Computational Biomedicine Weill Cornell Medicine New York NY USA Controlled Department and Institution New York NY USA Englander Institute for Precision Medicine Weill Cornell Medicine Ne

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Identified solution management in the landfill with analytic network process

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IOP Conference Series: Earth and environmental science 2019年第1期399卷

作者： B Ratnawati M Yani Suprihatin H Hardjomijojo Graduate School of IPB University (Bogor Agriculture University) The Study Program of Natural Resources & Environmental Management Campus IPB Barangsiang Bogor 16144 Indonesia IPB University Vocational of Science IPB University (Bogor Agriculture University) The Study Program of Environmental Engineering and Management JL Kumbang No.14 Bogor Faculty of Agricultural Technology of IPB University Department of Agroindustrial Technics Campus IPB Dramaga Bogor

The solution to solve these challenges is the waste management. The waste management is needed to solve starting from upstream to downstream. The waste management in downstream is in the landfill. The management Landfill not only manages solid waste but also waste water treatment. One form of waste water treatments in a landfill is the leachate treatment. The leachate treatment is a priority for management in landfill because it can reduce water, soil, air pollution in the landfill and the surrounding environment. In order to determine the best option among several alternatives to manage the leachate treatment, this research used Analytic Network Process (ANP) with three levels (actors, criteria, and alternatives). Secondary and primary data collection was carried out from April until June 2019 in Indonesia. Data were collected through a survey using questionnaire instrument. Participants of questionnaire amount of 20 people. The participants from lecturers, government, and society. The finding of this research showed that the leachate treatment using coagulation-flocculation was easier to be used in Indonesia.

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Author Correction: Predicting the potential for zoonotic transmission and host associations for novel viruses (Vol 5, 844, 2022)

COMMUNICATIONS BIOLOGY

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COMMUNICATIONS BIOLOGY 2023年第1期6卷 25页

作者： Pandit, Pranav S. Anthony, Simon J. Goldstein, Tracey Olival, Kevin J. Doyle, Megan M. Gardner, Nicole R. Bird, Brian Smith, Woutrina Wolking, David Gilardi, Kirsten Monagin, Corina H. Kelly, Terra Uhart, Marcela M. Epstein, Jonathan H. Machalaba, Catherine Rostal, Melinda K. Dawson, Patrick Hagan, Emily Sullivan, Ava Li, Hongying Chmura, Aleksei A. Latinne, Alice Lange, Christian O'Rourke, Tammie Olson, Sarah Keatts, Lucy Mendoza, A. Patricia Perez, Alberto de Paula, Catia Dejuste Zimmerman, Dawn Valitutto, Marc LeBreton, Matthew McIver, David Islam, Ariful Duong, Veasna Mouiche, Moctar Shi, Zhengli Mulembakani, Prime Kumakamba, Charles Ali, Mohamed Kebede, Nigatu Tamoufe, Ubald Bel-Nono, Samuel Camara, Alpha Pamungkas, Joko Coulibaly, Kalpy J. Abu-Basha, Ehab Kamau, Joseph Silithammavong, Soubanh Desmond, James Hughes, Tom Shiilegdamba, Enkhtuvshin Aung, Ohnmar Karmacharya, Dibesh Nziza, Julius Ndiaye, Daouda Gbakima, Aiah Sajali, Zikankuba Wacharapluesadee, Supaporn Robles, Erika Alandia Ssebide, Benard Suzan, Gerardo Aguirre, Luis F. Solorio, Monica R. Dhole, Tapan N. Nga, Nguyen T. T. Hitchens, Peta L. Joly, Damien O. Saylors, Karen Fine, Amanda Murray, Suzan Karesh, William B. Daszak, Peter Mazet, Jonna A. K. Johnson, Christine K. University of California Davis One Health Institute School of Veterinary Medicine Davis USA (GRID:grid.27860.3b) (ISNI:0000 0004 1936 9684) Columbia University Center for Infection and Immunity New York USA (GRID:grid.21729.3f) (ISNI:***) EcoHealth Alliance New York USA (GRID:grid.420826.a) (ISNI:0000 0004 0409 4702) Labyrinth Global Health Inc. St Petersburg USA (GRID:grid.420826.a) Wildlife Conservation Society Health Program Bronx USA (GRID:grid.269823.4) (ISNI:0000 0001 2164 6888) Wildlife Conservation Society Health Program Bronx USA (GRID:grid.269823.4) (ISNI:0000 0001 2164 6888) Wildlife Conservation Society (WCS) Peru Program Lima Peru (GRID:grid.516986.5) Wildlife Conservation Society (WCS) Peru Program Lima Peru (GRID:grid.516986.5) Global Health Program Smithsonian’s National Zoological Park and Conservation Biology Institute Washington USA (GRID:grid.467700.2) (ISNI:0000 0001 2182 2028) Mosaic/Global Viral Cameroon Yaoundé Cameroon (GRID:grid.452492.c) Metabiota Inc Nanaimo Canada (GRID:grid.452492.c) Institut Pasteur du Cambodge Phnom Penh Cambodia (GRID:grid.418537.c) (ISNI:0000 0004 7535 978X) Chinese Academy of Sciences Wuhan Institute of Virology Wuhan China (GRID:grid.9227.e) (ISNI:***) University of Kinshasa Kinshasa School of Public Health Kinshasa Democratic Republic of the Congo (GRID:grid.9783.5) (ISNI:0000 0000 9927 0991) Metabiota Inc. Kinshasa Democratic Republic of the Congo (GRID:grid.9783.5) Egypt National Research Centre Dokki Egypt (GRID:grid.419725.c) (ISNI:0000 0001 2151 8157) Addis Ababa University Aklilu Lemma Institute of Pathobiology Addis Ababa Ethiopia (GRID:grid.7123.7) (ISNI:0000 0001 1250 5688) Metabiota Cameroon Ltd Yaoundé Yaoundé Cameroon (GRID:grid.452492.c) Military Veterinarian (Rtd.) Accra Ghana (GRID:grid.452492.c) Centre de Recherche en Virologie (VRV) Projet Fievres Hemoraquiques en Guinée Nongo/Contéya-Commune de Ratoma Guinea (GRID:grid.452492.c) Bogor Agricultural University Primate Research Center Bogor

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Applicability of zirconium loaded okara in the removal and recovery of phosphorus from municipal wastewater

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IOP Conference Series. Earth and environmental science 2019年第1期266卷 012004-012004页

作者： Nguyen, T A H Ngo, H H Guo, W S Pham, T Q Cao, T H Nguyen, T H H Master’s Program in Environmental Engineering VNU Vietnam Japan University Luu Huu Phuoc My Dinh 1 residential area Nam Tu Liem Hanoi Vietnam Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology Sydney (UTS) 15 Broadway Ultimo NSW 2007 Australia Graduate University of Science and Technology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Cau Giay Hanoi Vietnam Faculty of Geology VNU University of Science 334 Nguyen Trai Thanh Xuan Hanoi Vietnam

Recently, there is a new trend to consider wastewater as a precious resource. Since phosphorus is a limited non-renewable element, and MAP (Magnesium Ammonium Phosphate - MgNH4PO4.6H2O) is a valuable slow-release fertilizer, the recovery of phosphorous as MAP has received special attention from scientists all over the world. However, the application of this process with municipal wastewater is still a challenge, due to low concentration of phosphorus and high volume of municipal wastewater. This study investigates the potential of reclaiming MAP from municipal wastewater by combination of adsorption and crystallization. Soybean milk residue (okara) was loaded with Zirconium (Zr) to prepare the adsorbent (ZLO). Adsorption and desorption experiments were conducted in a semi-pilot scale ZLO packed colum system. Effects of P: N: Mg molar ratios, chemical sources and temperature on the formation of MAP were examined in an attempt to identify the optimal crystallization conditions. The attained precipitate was characterized using XRD, SEM, FTIR techniques. It was found that the ZLO packed column adsorption-desorption system could pre-concentrate phosphorus from municipal wastewater up to 28.36 times, fitting well the minimum requirement (50 mg P/L) for the economical MAP recovery. Up to 95.19% of dissolved phosphorus in desorption solution was recovered at pH = 9, Mg: N: P molar ratio = 2:2:1, using a combination of MgCl2.6H2O and NH4Cl. The harvested MAP exhibited high purity (92.59%), high P-availability (89% by mass), and extremely low levels of heavy metals. The results prove that it is viable to recover MAP from municipal wastewater by employing ZLO as adsorbent, followed by crystallization. This paves the way for mining phosphorus from municipal wastewater and reducing okara as an agricultural byproduct in a green way.

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Long-term study of the intermittent extreme behaviour of 1ES 2344+514 38

Long-term study of the intermittent extreme behaviour of 1ES...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Arbet-Engels, A. Mondal, H.A. Fukami, S. D’Ammando, F. Dorner, D. Chatterjee, R. Majumdar, P. Manganaro, M. Hovatta, T. Das, S. Raiteri, C.M. Villata, M. Perri, M. Verrechia, F. Leto, C. Filippenko, A. Zheng, W. Abe, H. Abe, S. Abhir, J. Acciari, V.A. Agudo, I. Aniello, T. Ansoldi, S. Antonelli, L.A. Arbet Engels, A. Arcaro, C. Artero, M. Asano, K. Baack, D. Babić, A. Baquero, A. Barres de Almeida, U. Barrio, J.A. Batković, I. Baxter, J. Becerra González, J. Bednarek, W. Bernardini, E. Bernardos, M. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Burelli, I. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-Tirado, A.J. Ceribella, G. Chai, Y. Chatterjee, R. Chilingarian, A. Cifuentes, A. Cikota, S. Colombo, E. Contreras, J.L. Cortina, J. Covino, S. D’Ammando, F. D’Amico, G. D’Elia, V. Da Vela, P. Dazzi, F. De Angelis, A. De Lotto, B. Del Popolo, A. Delfino, M. Delgado, J. Delgado Mendez, C. Depaoli, D. Di Pierro, F. Di Venere, L. Dominis Prester, D. Donini, A. Doro, M. Elsaesser, D. Emery, G. Escudero, J. Fariña, L. Fattorini, A. Foffano, L. Font, L. Fröse, S. Fukazawa, Y. García López, R.J. Garczarczyk, M. Gasparyan, S. Gaug, M. Giesbrecht Paiva, J.G. Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Grau, R. Green, D. Green, J.G. Hadasch, D. Hahn, A. Hassan, T. Heckmann, L. Herrera, J. Hrupec, D. Hütten, M. Imazawa, R. Inada, T. Iotov, R. Ishio, K. Jiménez Martínez, I. Jormanainen, J. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez Lezáun, M. Lamastra, A. Lelas, D. Leone, F. Lindfors, E. Linhoff, L. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Lorini, A. Lyard, E. Machado de Oliveira Fraga, B. Majumdar, P. Makariev, M. Maneva, G. Mang, N. Manganaro, M. Mangano, S. Mannheim, K. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, S. Saha Inst. of Nuclear Physics A CI of Homi Bhabha National Inst. West Bengal Kolkata700064 India INAF - Istituto di Radioastronomia Via Gobetti 101 BolognaI-40129 Italy School of Astrophysics Presidency University 86/1 College Street Kolkata700073 India University of Rijeka Faculty of Physics Rijeka51000 Croatia - ASI via del Politecnico s.n.c. RomaI-00133 Italy INAF Osservatorio Astrofisico di Torino Pino TorineseI-10025 Italy University of Turku TurkuFI-20014 Finland Aalto University Metsähovi Radio Observatory Metsähovintie 114 Kylmälä02540 Finland Italian Space Agency ASI via del Politecnico snc Roma00133 Italy INAF - Osservatorio Astronomico di Roma via di Frascati 33 MonteporzioI-00040 Italy Department of Astronomy University of California BerkeleyCA94720-3411 United States Miller Institute for Basic Research in Science University of California BerkeleyCA94720 United States The University of Tokyo Chiba Kashiwa277-8582 Japan ETH Zürich ZürichCH-8093 Switzerland Instituto de Astrofísica de Canarias Dpto. de Astrofísica Universidad de La Laguna Tenerife La LagunaE-38200 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain RomeI-00136 Italy Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik MünchenD-80805 Germany Università di Padova INFN PadovaI-35131 Italy Bellaterra BarcelonaE-08193 Spain Technische Universität Dortmund DortmundD-44221 Germany Zagreb10000 Croatia IPARCOS Institute EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain URCA RJ Rio de Janeiro22290-180 Brazil University of Lodz Faculty of Physics and Applied Informatics Department of Astrophysics Lodz90-236 Poland Centro de Investigaciones Energéticas Medioambientales y Tecnológicas MadridE-28040 Spain Departament de Física CERES-IEEC Universitat Autònoma de Barcelona BellaterraE-08193 Spain Università di Pisa INFN Pisa Pisa

Extreme high-frequency-peaked BL Lac objects (EHBLs) are the most energetic persistent sources in the Universe. They are characterized by a spectral energy distribution (SED) featuring a synchrotron peak energy above 1 keV. 1ES 2344+514 is a blazar known to behave as an EHBL intermittently. Until now, its EHBL nature was only reported during flares, but a coherent picture is missing as unbiased monitoring campaigns are lacking. This work presents the longest observing campaign from radio to very-high-energy (VHE) frequencies performed so far on 1ES2344+514. Using observations during 2019-2021, we carry out a systematic investigation of the intermittent EHBL phases. Together with MAGIC, the dataset also includes X-ray observations from NuSTAR, XMM-Newton, and AstroSAT, providing an unprecedented determination of the two SED components. For the first time we report a clear EHBL behaviour during a low flux activity in 1ES 2344+514. It implies a significant hardening of the electron distribution inside the jet independent of flux. We also detect a bright X-ray state characterized by an unusually soft spectra, thus violating the harder-when-brighter relation typically found in blazars. The SED study further reveals an excess in the ultraviolet data with respect to the extrapolation of the X-ray spectrum, suggesting at least two regions contributing to the synchrotron flux. Finally we investigate a gamma-ray flare not accompanied by an X-ray counterpart. This peculiar outburst is interpreted using a time-dependent model involving two emitting components. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Synchrotrons

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Hazardous explosive eruptions of a recharging multi-cyclic island arc caldera

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Nature Geoscience 2024年 323-331页

作者： Jonas Preine Christian Hübscher Jens Karstens Steffen Kutterolf Katharina Pank Gareth Crutchley Tim Druitt Abigail Metcalfe Paraskevi Nomikou Dimitrios Papanikolaou Michael Manga Ralf Gertisser Sarah Beethe Carole Berthod Iona McIntosh Thomas Ronge Zenon Mateo Masako Tominaga Acacia Clark Susan DeBari Raymond Johnston Ally Peccia Christopher Jones Günther Kletetschka Alexis Bernard Hehe Chen Shun Chiyonobu Tatiana Fernandez-Perez Kumar Batuk Joshi Olga Koukousioura Molly McCanta Antony Morris Paraskevi Polymenakou Adam Woodhouse Yuzuru Yamamoto Kuo-Lung Wang Hao-Yang Lee Xiaohui Li Institute of Geophysics University of Hamburg Hamburg Germany GEOMAR Helmholtz Centre for Ocean Research Kiel Kiel Germany University Clermont-Auvergne CNRS IRD OPGC Laboratoire Magmas et Volcans Clermont-Ferrand France Department of Geology and Geoenvironment National and Kapodistrian University of Athens Athens Greece Department of Earth and Planetary Science University of California Berkeley CA USA School of Geography Geology and the Environment Keele University Keele UK College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis OR USA Institut De Physique Du Globe De Paris Centre National de la Recherche Scientifique (CNRS) Paris France Japan Agency for Marine-Earth Science and Technology Yokosuka Japan International Ocean Discovery Program Texas A&M University College Station TX USA Department of Geology and Geophysics Woods Hole Oceanographic Institution Woods Hole MA USA School of Natural Sciences/CODES University of Tasmania Hobart Tasmania Australia Geology Department Western Washington University Bellingham WA USA School of Geosciences University of South Florida Tampa FL USA Lamont-Doherty Earth Observatory Columbia University Palisades NY USA Department of Earth and Planetary Sciences University of California Riverside CA USA Geophysical Institute University of Alaska Fairbanks Fairbanks AK USA Charles University Faculty of Science Prague Czech Republic Laboratoire des Fluides Complexes et leurs Réservoirs Université de Pau et des Pays de l’Adour Pau France School of Ocean Sciences China University of Geosciences Beijing China Faculty of International Resource Sciences Akita University Akita Japan Department of Geology Kent State University Kent OH USA Solid Earth Research Group National Centre for Earth Science Studies Thiruvananthapuram India School of Geology Aristotle University of Thessaloniki Thessaloniki Greece University of Cologne Institute of Geology and Mineralogy Cologne Germany

Caldera-forming eruptions of silicic volcanic systems are among the most devastating events on Earth. By contrast, post-collapse volcanic activity initiating new caldera cycles is generally considered less hazardous. Formed after Santorini’s latest caldera-forming eruption of ~1600bce, the Kameni Volcano in the southern Aegean Sea enables the eruptive evolution of a recharging multi-cyclic caldera to be reconstructed. Kameni’s eruptive record has been documented by onshore products and historical descriptions of mainly effusive eruptions dating back to 197bce. Here we combine high-resolution seismic reflection data with cored lithologies from International Ocean Discovery program Expedition 398 at four sites to determine the submarine architecture and volcanic history of intra-caldera deposits from Kameni. Our shore-crossing analysis reveals the deposits of a submarine explosive eruption that produced up to 3.1 km3of pumice and ash, which we relate to a historical eruption in 726ce. The estimated volcanic explosivity index of magnitude 5 exceeds previously considered worst-case eruptive scenarios for Santorini. Our finding that the Santorini caldera is capable of producing large explosive eruptions at an early stage in the caldera cycle implies an elevated hazard potential for the eastern Mediterranean region, and potentially for other recharging silicic calderas.

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Using puzzle to encourage students to do problem posing

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Journal of Physics: Conference Series 2018年第1期1040卷

作者： I M Candiasa N Santiyadnya G K A Sunu Educational Science Study Program Post Graduate Faculty Universitas Pendidikan Ganesha Bali – Indonesia 81116 Electronica Technology Education Study Program Faculty of Technology and Vocational School Universitas Pendidikan Ganesha Bali – Indonesia 81116 Educational Administration Post Graduate Program Faculty Universitas Pendidikan Ganesha Bali – Indonesia 81116

Problem posing is very important in learning mathematics. Many studies have indicated that problem posing can improve the ability to solve mathematics problems. Therefore it is necessary to encourage students systematically to do problem posing. This research tries to pack problem posing in puzzle frame in order to increase student's interest and ability to do problem posing. The puzzle game which is then directed to problem posing is assured can arouse students' enthusiasm, thus encouraging their involvement in problem posing activities. Two groups of junior high school students each consisted of 31 and 32 students selected as samples. The first group follow mathematics class with problem posing learning model that preceded by playing a puzzle but still in a mathematical environment. The second group follow the mathematics class with problem posing learning model only. At the end of the research student's interest and ability to do problem posing are compared by using MANOVA test. Wilks' Lambda test results F = 10.8 on significance (p) = 0.002. Based on these findings, it is concluded that the problem posing learning model in mathematics that is preceded by playing puzzles can increase students' interest and ability to do problem posing.

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