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Theoretical study of the transmission properties of a one-dimensional polycarbonate-liquid photonic array

AIP Conference Proceedings 2018年第1期1934卷

作者： A. Sánchez K. Y. Guerra A. V. Porta S. Orozco 1Department of Physics Faculty of Sciences Universidad Nacional Autónoma de México (UNAM) Av. Universidad 3000 col. Universidad Nacional Autónoma de México Cd. De México 04510 México 2Coordination of Ph.D. Program in Materials Science and Engineering Unidad de Posgrado Edificio C 1er. piso cub. 105 Circuito de Posgrados s/n Ciudad Universitaria Cd. de México 04510 México

The opto-fluidics systems can be used for label free refractometric and biosensensing applications. In this work transmission properties of one-dimensional polycarbonate-liquid photonic arrays are studied, where methanol and ethanol were proposed as liquid components. The band structure and the transmission spectrum were calculated using the transference matrix method, in which we consider the dispersion relation for the refractive index n(w) of each material in the visible range. Using lattice parameters of 1 µm, 10 µm, and 4 µm, we obtained forbidden bandgaps in the visible region. When lattice parameters of 1000 µm were considered, we obtained several narrow bandgaps in the visible range.

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Mapping geographical inequalities in childhood diarrhoeal morbidity and mortality in low-income and middle-income countries, 2000-17: analysis for the Global Burden of disease Study 2017 (vol 395, pg 1779, 2020)

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LANCET 2020年第10239期395卷 1762-1762页

作者： Reiner, R. C., Jr. Hay, S., I Institute for Health Metrics and Evaluation University of Washington Seattle WA United States Department of Global Health School of Medicine University of Washington Seattle WA United States Department of Health Metrics Sciences School of Medicine University of Washington Seattle WA United States College of Health and Medical Sciences Haramaya University Harar Ethiopia Department of Epidemiology and Biostatistics Haramaya University Harar Ethiopia Department of Medical Laboratory Sciences Haramaya University Harar Ethiopia School of Nursing and Midwifery Haramaya University Harar Ethiopia School of Pharmacy Haramaya University Harar Ethiopia School of Public Health Haramaya University Harar Ethiopia Haramaya University Harar Ethiopia Advanced Diagnostic and Interventional Radiology Research Center Tehran University of Medical Sciences Tehran Iran Cancer Biology Research Center Tehran University of Medical Sciences Tehran Iran Cancer Research Institute Tehran University of Medical Sciences Tehran Iran Department of Economics and Management Sciences for Health Tehran University of Medical Sciences Tehran Iran Department of Environmental Health Engineering Tehran University of Medical Sciences Tehran Iran Department of Epidemiology and Biostatistics Tehran University of Medical Sciences Tehran Iran Department of Health Management and Economics Tehran University of Medical Sciences Tehran Iran Department of Microbiology Tehran University of Medical Sciences Tehran Iran Department of Pharmacology Tehran University of Medical Sciences Tehran Iran Digestive Diseases Research Institute Tehran University of Medical Sciences Tehran Iran Endocrinology and Metabolism Research Center Tehran University of Medical Sciences Tehran Iran Hematology-Oncology and Stem Cell Transplantation Research Center Tehran University of Medical Sciences Tehran Iran Iran National Institute of Health Research Tehran University of Medical Sciences Tehran Iran Metabolomics and

Summary Background Across low-income and middle-income countries (LMICs), one in ten deaths in children younger than 5 years is attributable to diarrhoea. The substantial between-country variation in both diarrhoea incidence and mortality is attributable to interventions that protect children, prevent infection, and treat disease. Identifying subnational regions with the highest burden and mapping associated risk factors can aid in reducing preventable childhood *** We used Bayesian model-based geostatistics and a geolocated dataset comprising 15 072 746 children younger than 5 years from 466 surveys in 94 LMICs, in combination with findings of the Global Burden of diseases, Injuries, and Risk Factors Study (GBd) 2017, to estimate posterior distributions of diarrhoea prevalence, incidence, and mortality from 2000 to 2017. From these data, we estimated the burden of diarrhoea at varying subnational levels (termed units) by spatially aggregating draws, and we investigated the drivers of subnational patterns by creating aggregated risk factor *** The greatest declines in diarrhoeal mortality were seen in south and southeast Asia and South America, where 54·0% (95% uncertainty interval [UI] 38·1-65·8), 17·4% (7·7-28·4), and 59·5% (34·2-86·9) of units, respectively, recorded decreases in deaths from diarrhoea greater than 10%. Although children in much of Africa remain at high risk of death due to diarrhoea, regions with the most deaths were outside Africa, with the highest mortality units located in Pakistan. Indonesia showed the greatest within-country geographical inequality; some regions had mortality rates nearly four times the average country rate. Reductions in mortality were correlated to improvements in water, sanitation, and hygiene (WASH) or reductions in child growth failure (CGF). Similarly, most high-risk areas had poor WASH, high CGF, or low oral rehydration therapy *** By co-analysing geospatial trends in d

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A real-time moving objects detection and classification approach for static cameras

A real-time moving objects detection and classification appr...

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IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)

作者： Hong-Son Vu Jia-Xian Guo Kuan-Hung Chen Shu-Jui Hsieh de-Sheng Chen Ph.D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan R.O.C Department of Electronic Engineering Feng Chia University Taichung Taiwan R.O.C Department of Information Engineering and Computer Science Feng Chia University Taichung Taiwan R.O.C

ISBN: (纸本)9781509020744

Moving objects recognition plays an important role in camera-only active safety systems and intelligent autonomous vehicles. For these applications, reliable detection performance is required; however, pedestrian detection is challenging due to their divergent dressing and action variety. Besides, real-time detection and recognition performance is also critical. This paper aims to optimize the pedestrian detection and recognition by combining both temporal-domain and spatial-domain methods. Accordingly, we first use Background Subtraction (BS) technique to detect moving objects. Then, we use AdaBoost algorithm to classify the detected moving objects into their categories. Experimental results on our datasets show that the proposed approach can speed up 3.3 times in terms of processing rate, with significantly improved detection performance, i.e., at least 17% detection rate increment and 38% false alarm decrement for daytime out-door applications.

关键词： Classification algorithms Object detection Real-time systems Object recognition Lighting Training Histograms

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The gravity collective: A search for the electromagnetic counterpart to the neutron star-black hole merger GW190814

arXiv

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arXiv 2021年

作者： Kilpatrick, Charles d. Coulter, david A. Arcavi, Iair Brink, Thomas G. dimitriadis, Georgios Filippenko, Alexei V. Foley, Ryan J. Howell, d. Andrew Jones, david O. Makler, Martin Piro, Anthony L. Rojas-Bravo, César Sand, david J. Swift, Jonathan J. Tucker, douglas Zheng, Weikang Allam, Sahar S. Annis, James T. Antilen, Juanita Bachmann, Tristan G. Bloom, Joshua S. Bom, Clecio R. Bostroem, K. Azalee Brout, dillon Burke, Jamison Butler, Robert E. Butner, Melissa Campillay, Abdo Clever, Karoli E. Conselice, Christopher J. Cooke, Jeff dage, Kristen C. de Carvalho, Reinaldo R. Jaeger, Thomas d.E. desai, Shantanu Garcia, Alyssa Garcia-Bellido, Juan Gill, Mandeep S.S. Girish, Nachiket Hallakoun, Na'Ama Herner, Kenneth Hiramatsu, daichi Holz, daniel E. Huber, Grace Kawash, Adam M. McCully, Curtis Medallon, Sophia A. Metzger, Brian d. Modak, Shaunak Morgan, Robert Muñoz, Ricardo R. Muñoz-Elgueta, Nahir Murakami, Yukei S. Olivares, Felipe E. Palmese, Antonella Patra, Kishore Pereira, Maria E.S. Pessi, Thallis L. Pineda-Garcia, J. Quirola-Vásquez, Jonathan Ramirez-Ruiz, Enrico Rembold, Sandro Barboza Rest, Armin Rodríguez, Ósmar Santana-Silva, Luidhy Sherman, Nora F. Siebert, Matthew R. Smith, Carli Smith, J. Allyn Soares-Santos, Marcelle Stacey, Holland Stahl, Benjamin E. Strader, Jay Strasburger, Erika Sunseri, James Tinyanont, Samaporn Tucker, Brad E. Ulloa, Natalie Valenti, Stefano Vasylyev, Sergiy Wiesner, Matthew P. Zhang, Keto d. Northwestern University EvanstonIL60208 United States Department of Astronomy and Astrophysics University of California Santa CruzCA95064 United States The School of Physics and Astronomy Tel Aviv University Tel Aviv69978 Israel CIFAR Azrieli Global Scholars program CIFAR Toronto Canada Department of Astronomy University of California BerkeleyCA94720-3411 United States Miller Institute for Basic Research in Science University of California BerkeleyCA94720 United States Department of Physics University of California Santa BarbaraCA93106-9530 United States Las Cumbres Observatory 6740 Cortona Dr Suite 102 GoletaCA93117-5575 United States International Center for Advanced Studies & Instituto de Ciencias Físicas ECyT-UNSAM & CONICET Buenos Aires1650 Argentina Centro Brasileiro de Pesquisas Físicas Rua Dr. Xavier Sigaud 150 Rio de Janeiro RJCEP 22290-180 Brazil The Observatories of the Carnegie Institution for Science 813 Santa Barbara St. PasadenaCA91101 United States Steward Observatory University of Arizona 933 North Cherry Avenue TucsonAZ85721-0065 United States Thacher Observatory Thacher School 5025 Thacher Rd. OjaiCA93023 United States Fermi National Accelerator Laboratory P. O. Box 500 BataviaIL60510 United States Departamento de Astronomía Universidad de Chile Camino El Observatorio 1515 Las Condes Santiago Chile Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 50B-4206 BerkeleyCA94720-3411 United States Centro Federal de Educação Tecnológica Celso Suckow da Fonseca Rodovia Mário Covas lote J2 quadra J Itaguaí RJCEP 23810-000 Brazil Department of Physics and Astronomy University of California DavisCA95616 United States Center for Astrophysics Harvard & Smithsonian 60 Garden St CambridgeMA02138 United States Department of Astronomy Indiana University 727 E. Third St. BloomingtonIN47405 United States Dep

We present optical follow-up imaging obtained with the Katzman Automatic Imaging Telescope, Las Cumbres Observatory Global Telescope Network, Nickel Telescope, Swope Telescope, and Thacher Telescope of the LIGO/Virgo gravitational wave (GW) signal from the neutron star–black hole (NSBH) merger GW190814. We searched the GW190814 localization region (19 deg2 for the 90th percentile best localization), covering a total of 51 deg2 and 94.6% of the two-dimensional localization region. Analyzing the properties of 189 transients that we consider as candidate counterparts to the NSBH merger, including their localizations, discovery times from merger, optical spectra, likely host-galaxy redshifts, and photometric evolution, we conclude that none of these objects are likely to be associated with GW190814. Based on this finding, we consider the likely optical properties of an electromagnetic counterpart to GW190814, including possible kilonovae and short gamma-ray burst afterglows. Using the joint limits from our follow-up imaging, we conclude that a counterpart with an rband decline rate of 0.68 mag day−1, similar to the kilonova AT 2017gfo, could peak at an absolute magnitude of at most −17.8 mag (50% confidence). Our data are not constraining for "red" kilonovae and rule out "blue" kilonovae with M > 0.5 M* (30% confidence). We strongly rule out all known types of short gamma-ray burst afterglows with viewing angles ◦ assuming an initial jet opening angle of ∼ 5.2◦ and explosion energies and circumburst densities similar to afterglows explored in the literature. Finally, we explore the possibility that GW190814 merged in the disk of an active galactic nucleus, of which we find four in the localization region, but we do not find any candidate counterparts among these sources. © 2021, CC BY.

关键词： Stars

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dense sampling of bird diversity increases power of comparative genomics (vol 587, pg 252, 2020)

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NATURE 2021年第7856期592卷 E24-E24页

作者： Feng, Shaohong Stiller, Josefin deng, Yuan Armstrong, Joel Fang, Qi Reeve, Andrew Hart Xie, duo Chen, Guangji Guo, Chunxue Faircloth, Brant C. Petersen, Bent Wang, Zongji Zhou, Qi diekhans, Mark Chen, Wanjun Andreu-Sanchez, Sergio Margaryan, Ashot Howard, Jason Travis Parent, Carole Pacheco, George Sinding, Mikkel-Holger S. Puetz, Lara Cavill, Emily Ribeiro, Angela M. Eckhart, Leopold Fjeldsa, Jon Hosner, Peter A. Brumfield, Robb T. Christidis, Les Bertelsen, Mads F. Sicheritz-Ponten, Thomas Tietze, dieter Thomas Robertson, Bruce C. Song, Gang Borgia, Gerald Claramunt, Santiago Lovette, Irby J. Cowen, Saul J. Njoroge, Peter dumbacher, John philip Ryder, Oliver A. Fuchs, Jerome Bunce, Michael Burt, david W. Cracraft, Joel Meng, Guanliang Hackett, Shannon J. Ryan, Peter G. Jonsson, Knud Andreas Jamieson, Ian G. da Fonseca, Rute R. Braun, Edward L. Houde, Peter Mirarab, Siavash Suh, Alexander Hansson, Bengt Ponnikas, Suvi Sigeman, Hanna Stervander, Martin Frandsen, Paul B. van der Zwan, Henriette van der Sluis, Rencia Visser, Carina Balakrishnan, Christopher N. Clark, Andrew G. Fitzpatrick, John W. Bowman, Reed Chen, Nancy Cloutier, Alison Sackton, Timothy B. Edwards, Scott V. Foote, dustin J. Shakya, Subir B. Sheldon, Frederick H. Vignal, Alain Soares, Andre E. R. Shapiro, Beth Gonzalez-Solis, Jacob Ferrer-Obiol, Joan Rozas, Julio Riutort, Marta Tigano, Anna Friesen, Vicki dalen, Love Urrutia, Araxi O. Szekely, Tamas Liu, Yang Campana, Michael G. Corvelo, Andre Fleischer, Robert C. Rutherford, Kim M. Gemmell, Neil J. dussex, Nicolas Mouritsen, Henrik Thiele, Nadine delmore, Kira Liedvogel, Miriam Franke, Andre Hoeppner, Marc P. Krone, Oliver Fudickar, Adam M. Mila, Borja Ketterson, Ellen d. Fidler, Andrew Eric Friis, Guillermo Parody-Merino, Angela M. Battley, phil F. Cox, Murray P. Lima, Nicholas Costa Barroso Prosdocimi, Francisco Parchman, Thomas Lee Schlinger, Barney A. Loiselle, Bette A. Blake, John G. Lim, Haw Chuan day, Lainy B. Fuxjager, Matthew J. Baldwin, Maude W. Braun, Michael J. Wirthlin, Morgan dikow, China National GeneBank BGI-Shenzhen Shenzhen China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming China BGI-Shenzhen Shenzhen China Villum Centre for Biodiversity Genomics Section for Ecology and Evolution Department of Biology University of Copenhagen Copenhagen Denmark BGI Education Center University of Chinese Academy of Sciences Shenzhen China MOE Laboratory of Biosystems Homeostasis and Protection Life Sciences Institute Zhejiang University Hangzhou China Department of Neuroscience and Developmental Biology University of Vienna Vienna Austria Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences Kunming China James D. Watson Institute of Genome Sciences Hangzhou China UC Santa Cruz Genomics Institute UC Santa Cruz Santa Cruz CA USA Natural History Museum of Denmark University of Copenhagen Copenhagen Denmark Center for Macroecology Evolution and Climate GLOBE Institute University of Copenhagen Copenhagen Denmark Department of Biological Sciences Louisiana State University Baton Rouge LA USA Museum of Natural Science Louisiana State University Baton Rouge LA USA Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio) Faculty of Applied Sciences AIMST University Kedah Malaysia Section for Evolutionary Genomics The GLOBE Institute Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark Institute of Molecular Biology National Academy of Sciences Yerevan Armenia University Museum Norwegian University of Science and Technology Trondheim Norway Center for Reproductive Medicine The 2nd Affiliated Hospital School of Medicine Zhejiang University Hangzhou China Novogene Durham NC USA Duke University Medical Center Durham NC USA The Rockefeller University New York NY USA Howard Hughes Medical Institute Chevy Chase MD USA Department of Dermatology Medical University of Vienna Vienna Austria

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Subnational mapping of HIV incidence and mortality among individuals aged 15–49 years in sub-Saharan Africa, 2000–18: a modelling study

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The Lancet HIV 2021年第6期8卷 e363-e375页

作者： Sartorius, Benn VanderHeide, John d. Yang, Mingyou Goosmann, Erik A. Hon, Julia Haeuser, Emily Cork, Michael A. Perkins, Samantha Jahagirdar, deepa Schaeffer, Lauren E. Serfes, Audrey L. LeGrand, Kate E. Abbastabar, Hedayat Abebo, Zeleke Hailemariam Abosetugn, Akine Eshete Abu-Gharbieh, Eman Accrombessi, Manfred Mario Kokou Adebayo, Oladimeji M. Adegbosin, Adeyinka Emmanuel Adekanmbi, Victor Adetokunboh, Olatunji O. Adeyinka, daniel Adedayo Ahinkorah, Bright Opoku Ahmadi, Keivan Ahmed, Muktar Beshir Akalu, Yonas Akinyemi, Oluwaseun Oladapo Akinyemi, Rufus Olusola Aklilu, Addis Akunna, Chisom Joyqueenet Alahdab, Fares Al-Aly, Ziyad Alam, Noore Alamneh, Alehegn Aderaw Alanzi, Turki M. Alemu, Biresaw Wassihun Alhassan, Robert Kaba Ali, Tilahun Alipour, Vahid Amini, Saeed Ancuceanu, Robert Ansari, Fereshteh Anteneh, Zelalem Alamrew Anvari, davood Anwer, Razique Appiah, Seth Christopher Yaw Arabloo, Jalal Asemahagn, Mulusew A. Asghari Jafarabadi, Mohammad Asmare, Wondwossen Niguse Atnafu, desta debalkie Atout, Maha Moh'd Wahbi Atreya, Alok Ausloos, Marcel Awedew, Atalel Fentahun Ayala Quintanilla, Beatriz Paulina Ayanore, Martin Amogre Aynalem, Yared Asmare Ayza, Muluken Altaye Azari, Samad Azene, Zelalem Nigussie Babar, Zaheer-Ud-din Baig, Atif Amin Balakrishnan, Senthilkumar Banach, Maciej Bärnighausen, Till Winfried Basu, Sanjay Bayati, Mohsen Bedi, Neeraj Bekuma, Tariku Tesfaye Bezabhe, Woldesellassie M. Mequanint Bhagavathula, Akshaya Srikanth Bhardwaj, Pankaj Bhattacharyya, Krittika Bhutta, Zulfiqar A. Bibi, Sadia Bikbov, Boris Birhan, Tsegaye Adane Bitew, Zebenay Workneh Bockarie, Moses John Boloor, Archith Brady, Oliver J. Bragazzi, Nicola Luigi Briko, Andrey Nikolaevich Briko, Nikolay Ivanovich Burugina Nagaraja, Sharath Butt, Zahid A. Cárdenas, Rosario Carvalho, Felix Charan, Jaykaran Chatterjee, Souranshu Chattu, Soosanna Kumary Chattu, Vijay Kumar Chowdhury, Mohiuddin Ahsanul Kabir Chu, dinh-Toi Cook, Aubrey J. Cormier, Natalie Maria Cowden, Richard G. Culquichicon, Carlos dagnew, Baye dahlawi, Saad M.A. d Centre for Tropical Medicine and Global Health Nuffield Department of Medicine University of Oxford Oxford United Kingdom Malaria Atlas Project University of Oxford Oxford United Kingdom The George Institute for Global Health University of Oxford Oxford United Kingdom Department of Health Metrics Sciences School of Medicine University of Washington Seattle WA United States Institute for Health Metrics and Evaluation University of Washington Seattle WA United States Department of Global Health University of Washington Seattle WA United States Department of Medicine University of Washington Seattle WA United States Insights Program Bill and Melinda Gates Foundation Seattle WA United States Global Programs Medical Teams International Seattle WA United States Department of Pediatric Newborn Medicine Brigham and Women's Hospital Boston MA United States Advanced Diagnostic and Interventional Radiology Research Center Tehran University of Medical Sciences Tehran Iran Multiple Sclerosis Research Center Tehran University of Medical Sciences Tehran Iran Department of Epidemiology and Biostatistics Tehran University of Medical Sciences Tehran Iran Pediatric Chronic Kidney Disease Research Center Tehran University of Medical Sciences Tehran Iran Department of Environmental Health Engineering Tehran University of Medical Sciences Tehran Iran Metabolomics and Genomics Research Center Tehran University of Medical Sciences Tehran Iran Research Center for Immunodeficiencies Tehran University of Medical Sciences Tehran Iran Department of Public Health Arba Minch University Arba Minch Ethiopia Department of Medical Laboratory Sciences Arba Minch University Arba Minch Ethiopia College of Medicine and Health Science Arba Minch University Arba Minch Ethiopia Department of Nursing Arba Minch University Arba Minch Ethiopia Department of Biomedical Sciences Arba Minch University Arba Minch Ethiopia Department of Public Health Debre Berhan University Debre Brehan

Background: High-resolution estimates of HIV burden across space and time provide an important tool for tracking and monitoring the progress of prevention and control efforts and assist with improving the precision and efficiency of targeting efforts. We aimed to assess HIV incidence and HIV mortality for all second-level administrative units across sub-Saharan Africa. Methods: In this modelling study, we developed a framework that used the geographically specific HIV prevalence data collected in seroprevalence surveys and antenatal care clinics to train a model that estimates HIV incidence and mortality among individuals aged 15–49 years. We used a model-based geostatistical framework to estimate HIV prevalence at the second administrative level in 44 countries in sub-Saharan Africa for 2000–18 and sought data on the number of individuals on antiretroviral therapy (ART) by second-level administrative unit. We then modified the Estimation and Projection Package (EPP) to use these HIV prevalence and treatment estimates to estimate HIV incidence and mortality by second-level administrative unit. Findings: The estimates suggest substantial variation in HIV incidence and mortality rates both between and within countries in sub-Saharan Africa, with 15 countries having a ten-times or greater difference in estimated HIV incidence between the second-level administrative units with the lowest and highest estimated incidence levels. Across all 44 countries in 2018, HIV incidence ranged from 2·8 (95% uncertainty interval 2·1–3·8) in Mauritania to 1585·9 (1369·4–1824·8) cases per 100 000 people in Lesotho and HIV mortality ranged from 0·8 (0·7–0·9) in Mauritania to 676·5 (513·6–888·0) deaths per 100 000 people in Lesotho. Variation in both incidence and mortality was substantially greater at the subnational level than at the national level and the highest estimated rates were accordingly higher. Among second-level administrative units, Guijá district, Gaza Province, Mozambique,

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Author Correction: Ongoing declines for the world's amphibians in the face of emerging threats

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Nature 2024年第7993期625卷 E2页

作者： Jennifer A Luedtke Janice Chanson Kelsey Neam Louise Hobin Adriano O Maciel Alessandro Catenazzi Amaël Borzée Amir Hamidy Anchalee Aowphol Anderson Jean Ángel Sosa-Bartuano Ansel Fong G Anslem de Silva Antoine Fouquet Ariadne Angulo Artem A Kidov Arturo Muñoz Saravia Arvin C diesmos Atsushi Tominaga Biraj Shrestha Brian Gratwicke Burhan Tjaturadi Carlos C Martínez Rivera Carlos R Vásquez Almazán Celsa Señaris S R Chandramouli Christine Strüssmann Claudia Fabiola Cortez Fernández Claudio Azat Conrad J Hoskin Craig Hilton-Taylor damion L Whyte david J Gower deanna H Olson diego F Cisneros-Heredia diego José Santana Elizah Nagombi Elnaz Najafi-Majd Evan S H Quah Federico Bolaños Feng Xie Francisco Brusquetti Francisco S Álvarez Franco Andreone Frank Glaw Franklin Enrique Castañeda Fred Kraus Gabriela Parra-Olea Gerardo Chaves Guido F Medina-Rangel Gustavo González-durán H Mauricio Ortega-Andrade Iberê F Machado Indraneil das Iuri Ribeiro dias J Nicolas Urbina-Cardona Jelka Crnobrnja-Isailović Jian-Huan Yang Jiang Jianping Jigme Tshelthrim Wangyal Jodi J L Rowley John Measey Karthikeyan Vasudevan Kin Onn Chan Kotambylu Vasudeva Gururaja Kristiina Ovaska Lauren C Warr Luis Canseco-Márquez Luís Felipe Toledo Luis M díaz M Monirul H Khan Madhava Meegaskumbura Manuel E Acevedo Marcelo Felgueiras Napoli Marcos A Ponce Marcos Vaira Margarita Lampo Mario H Yánez-Muñoz Mark d Scherz Mark-Oliver Rödel Masafumi Matsui Maxon Fildor Mirza d Kusrini Mohammad Firoz Ahmed Muhammad Rais N'Goran G Kouamé Nieves García Nono Legrand Gonwouo Patricia A Burrowes Paul Y Imbun philipp Wagner philippe J R Kok Rafael L Joglar Renoir J Auguste Reuber Albuquerque Brandão Roberto Ibáñez Rudolf von May S Blair Hedges S d Biju S R Ganesh Sally Wren Sandeep das Sandra V Flechas Sara L Ashpole Silvia J Robleto-Hernández Simon P Loader Sixto J Incháustegui Sonali Garg Somphouthone phimmachak Stephen J Richards Tahar Slimani Tamara Osborne-Naikatini Tatianne P F Abreu-Jardim Thais H Condez Thiago R de Carvalho Timothy P Cutajar Todd W Pierson Truong Re:wild Austin TX USA. jluedtke@***. IUCN SSC Amphibian Specialist Group Toronto Ontario Canada. jluedtke@***. Re:wild Austin TX USA. IUCN SSC Amphibian Specialist Group Toronto Ontario Canada. Museu Paraense Emílio Goeldi CZO/Herpetologia Belém Brazil. Florida International University Miami FL USA. Centro de Ornitologia y Biodiversidad (CORBIDI) Lima Peru. Laboratory of Animal Behaviour and Conservation College of Life Sciences Nanjing Forestry University Nanjing People's Republic of China. Laboratory of Herpetology Museum Zoologicum Bogoriense Research Center for Biosystematics and Evolution National Research and Innovation Agency (BRIN) Cibinong Indonesia. Department of Zoology Faculty of Science Kasetsart University Bangkok Thailand. Action Pour la Sauvegarde de l'Ecologie en Haïti (ACSEH) Les Cayes Haiti. Environmental Protection In the Caribbean (EPIC) Maho Sint Maarten. Museo de Vertebrados de la Universidad de Panamá Ciudad de Panama Panama. Centro Oriental de Ecosistemas y Biodiversidad (BIOECO) Museo de Historia Natural "Tomás Romay" Santiago de Cuba Cuba. IUCN SSC Amphibian Specialist Group Sri Lanka Gampola Sri Lanka. Laboratoire Évolution & Diversité Biologique UMR 5174 Université Toulouse III Paul Sabatier Toulouse France. Russian State Agrarian University-MTAA Moscow Russia. IUCN SSC Amphibian Specialist Group Bolivia La Paz Bolivia. Animal Nutrition Unit Department of Veterinary and Biosciences Ghent University Ghent Belgium. ASEAN Centre for Biodiversity University of the Philippines Los Baños Laguna Philippines. HerpWatch Pilipinas Manila Philippines. Faculty of Education University of the Ryukyus Okinawa Japan. Graduate School of Engineering and Science University of the Ryukyus Okinawa Japan. SAVE THE FROGS! Laguna Beach CA USA. The University of Texas at Arlington Arlington TX USA. Smithsonian Conservation Biology Institute Front Royal VA USA. Center for Environmental Studies Sanata Dharma University (CESSDU) Yogya

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New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source

arXiv

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arXiv 2020年

作者： Addazi, A. Anderson, K. Ansell, S. Babu, K.S. Barrow, J. Baxter, d.V. Bentley, P.M. Berezhiani, Z. Bevilacqua, R. Biondi, R. Bohm, C. Brooijmans, G. Broussard, L.J. dev, B. Crawford, C. dolgov, A.d. dunne, K. Fierlinger, P. Fitzsimmons, M.R. Fomin, A. Frost, M. Gardiner, S. Gardner, S. Galindo-Uribarri, A. Geltenbort, P. Girmohanta, S. Golubeva, E. Greene, G.L. Greenshaw, T. Gudkov, V. Hall-Wilton, R. Heilbronn, L. Herrero-Garcia, J. Ichikawa, G. Ito, T.M. Iverson, E. Johansson, T. Jönsson, L. Jwa, Y.-J. Kamyshkov, Y. Kanaki, K. Kearns, E. Kerbikov, B. Kitaguchi, M. Kittelmann, T. Klinkby, E. Kobakhidze, A. Koerner, L.W. Kopeliovich, B. Kozela, A. Kudryavtsev, V. Kupsc, A. Lee, Y. Lindroos, M. Makkinje, J. Marquez, J.I. Meirose, B. Miller, T.M. Milstead, d. Mohapatra, R.N. Morishima, T. Muhrer, G. Mumm, H.P. Nagamoto, K. Nesti, F. Nesvizhevsky, V.V. Nilsson, T. Oskarsson, A. Paryev, E. Pattie, R.W. Penttilä, S. Pokotilovski, Y.N. Potashnikova, I. Redding, C. Richard, J.-M. Ries, d. Rinaldi, E. Rossi, N. Ruggles, A. Rybolt, B. Santoro, V. Sarkar, U. Saunders, A. Senjanovic, G. Serebrov, A.P. Shimizu, H.M. Shrock, R. Silverstein, S. Silvermyr, d. Snow, W.M. Takibayev, A. Tkachev, I. Townsend, L. Tureanu, A. Varriano, L. Vainshtein, A. de Vries, J. Woracek, R. Yamagata, Y. Young, A.R. Zanini, L. Zhang, Z. Zimmer, O. Amherst Center for Fundamental Interactions Department of Physics University of Massachusetts AmherstMA United States INFN Laboratori Nazionali del Gran Sasso Assergi AQ67010 Italy Fermi National Accelerator Laboratory BataviaIL60510-5011 United States Department of Physics Indiana University 727 E. Third St. BloomingtonIN47405 United States Indiana University Center for Exploration of Energy & Matter BloomingtonIN47408 United States Indiana University Quantum Science and Engineering Center BloomingtonIN47408 United States Department of Physics Boston University BostonMA02215 United States Center for Theoretical Physics College of Physics Science and Technology Sichuan University Chengdu610065 China Department of Physics University of Chicago ChicagoIL60637 United States Department of Physics University of Maryland College ParkMD20742-4111 United States Department of Physics and Astronomy University of South Carolina ColumbiaSC29208 United States Dipartimento di Scienze Fisiche e Chimiche Università di L’Aquila Coppito AQ67100 Italy National Institute of Standards and Technology GaithersburgMD20899 United States NRC "Kurchatov Institute" - PNPI Gatchina Russia Physics Department Technical University Munich Garching85748 Germany Institut Laue-Langevin Grenoble38042 France Department of Physics University of Helsinki P.O.Box 64 HelsinkiFIN-00014 Finland Institutionen för Fysik Chalmers Tekniska Högskola Sweden Department of Physics University of Houston HoustonTX77204-5008 United States Department of Physics and Astronomy East Tennessee State University Johnson CityTN37614 United States Department of Physics Kennesaw State University KennesawGA30144 United States Physics Department Indian Institute of Technology Kharagpur721302 India Department of Physics and Astronomy University of Tennessee KnoxvilleTN37996 United States Department of Nuclear Engineering University of Tennessee KnoxvilleTN37996 United States H

The violation of Baryon Number, B, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source (ESS) to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron-antineutron oscillation (n → n¯) via mixing, neutron-antineutron oscillation via regeneration from a sterile neutron state (n → [n', n¯'] → n¯), and neutron disappearance (n → n');the effective ∆B = 0 process of neutron regeneration (n → [n', n¯'] → n) is also possible. The program can be used to discover and characterise mixing in the neutron, antineutron, and sterile neutron sectors. The experiment addresses topical open questions such as the origins of baryogenesis, the nature of dark matter, and is sensitive to scales of new physics substantially in excess of those available at colliders. A goal of the program is to open a discovery window to neutron conversion probabilities (sensitivities) by up to three orders of magnitude compared with previous searches. The opportunity to make such a leap in sensitivity tests should not be squandered. The experiment pulls together a diverse international team of physicists from the particle (collider and low energy) and nuclear physics communities, while also including specialists in neutronics and magnetics. Copyright © 2020, The Authors. All rights reserved.

关键词： Neutrons

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Measurements of the temperature and E-mode polarization of the cosmic microwave background from the full 500-square-degree SPTpol dataset

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physical Review d 2025年第12期111卷 123513-123513页

作者： T.-L. Chou P. A. R. Ade A. J. Anderson J. E. Austermann L. Balkenhol J. A. Beall A. N. Bender B. A. Benson F. Bianchini L. E. Bleem J. E. Carlstrom C. L. Chang P. Chaubal H. C. Chiang R. Citron C. Corbett Moran T. M. Crawford A. T. Crites T. de Haan M. A. dobbs d. dutcher W. Everett J. Gallicchio E. M. George N. Gupta N. W. Halverson G. P. Holder W. L. Holzapfel J. d. Hrubes N. Huang J. Hubmayr K. d. Irwin L. Knox A. T. Lee d. Li A. Lowitz J. J. McMahon J. Montgomery T. Natoli J. P. Nibarger G. I. Noble V. Novosad Y. Omori S. Padin S. Patil C. Pryke W. Quan C. L. Reichardt J. E. Ruhl B. R. Saliwanchik K. K. Schaffer C. Sievers G. Smecher A. A. Stark C. Tucker T. Veach J. d. Vieira G. Wang N. Whitehorn W. L. K. Wu V. Yefremenko J. A. Zebrowski Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue Chicago Illinois 60637 USA Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue Chicago Illinois 60637 USA Cardiff University Cardiff CF10 3XQ United Kingdom Fermi National Accelerator Laboratory MS209 P.O. Box 500 Batavia Illinois 60510 USA NIST Quantum Devices Group 325 Broadway Mailcode 817.03 Boulder Colorado 80305 USA Department of Physics University of Colorado Boulder Colorado 80309 USA Sorbonne Universit’e CNRS UMR 7095 Institut d’Astrophysique de Paris 98 bis bd Arago 75014 Paris France High Energy Physics Division Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 USA SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park California 94025 USA Department of Physics University of Chicago 5640 South Ellis Avenue Chicago Illinois 60637 USA Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue Chicago Illinois 60637 USA School of Physics University of Melbourne Parkville Victoria 3010 Australia Department of Physics McGill University 3600 Rue University Montreal Quebec H3A 2T8 Canada School of Mathematics Statistics and Computer Science University of KwaZulu-Natal Durban South Africa University of Chicago 5640 South Ellis Avenue Chicago Illinois 60637 USA Jet Propulsion Laboratory Pasadena California 91109 USA Department of Physics Cornell University Ithaca New York USA Department of Astronomy Cornell University Ithaca New York USA Department of Physics University of California Berkeley California 94720 USA Physics Division Lawrence Berkeley National Laboratory Berkeley California 94720 USA High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan Canadian Institute for Advanced Research CIFAR Program in Gravity and the Extreme Universe Toronto Ontario M5G 1Z8 Canada Joseph Henry Laboratories of Physics Jadwin Hall Princ

Using the full four-year SPTpol 500 deg2 dataset in both the 95 and 150 GHz frequency bands, we present measurements of the temperature and E-mode polarization of the cosmic microwave background (CMB), as well as the E-mode polarization autopower spectrum (EE) and temperature-E-mode cross-power spectrum (TE) in the angular multipole range 50<ℓ<8000. We find the SPTpol dataset to be self-consistent, passing several internal consistency tests based on maps, frequency bands, bandpowers, and cosmological parameters. The full SPTpol dataset is well-fit by the ΛCdM model, for which we find H0=70.48±2.16 km s−1 Mpc−1 and Ωm=0.271±0.026, when using only the SPTpol data and a Planck-based prior on the optical depth to reionization. The ΛCdM parameter constraints are consistent across the 95 GHz-only, 150 GHz-only, TE-only, and EE-only data splits. Between the ℓ<1000 and ℓ>1000 data splits, the ΛCdM parameter constraints are borderline consistent at the ∼2σ level. This consistency improves when including a parameter AL, the degree of lensing of the CMB inferred from the smearing of acoustic peaks. When marginalized over AL, the ΛCdM parameter constraints from SPTpol are consistent with those from Planck. The power spectra presented here are the most sensitive measurements of the lensed CMB damping tail to date for roughly ℓ>1700 in TE and ℓ>2000 in EE.

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Preliminary Hydrogeologic Modeling and Optimal Monitoring Network design for a Contaminated Abandoned Mine Site Area: Application of developed Monitoring Network design Software

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Journal of Water Resource and Protection 2016年第1期8卷 46-64页

作者： Bithin datta Frederic durand Solemne Laforge Om Prakash Hamed K. Esfahani Sreenivasulu Chadalavada Ravi Naidu Discipline of Civil Engineering College of Science Technology and Engineering James Cook University Townsville Australia CRC-CARE (Cooperative Research Centre for Remediation and Assessment of the Environment) University of Newcastle Callaghan Australia Water and Environment Program Ecole Nationale Supérieure d’Ingénieurs de Limoges (ENSIL) Limoges France

In abandoned mine sites, i.e., mine sites where mining operations have ended, wide spread contaminations are often evident, but the potential sources and pathways of contamination especially through the subsurface, are difficult to identify due to inadequate and sparse geochemical measurements available. Therefore, it is essential to design and implement a planned monitoring net-work to obtain essential information required for establishing the potential contamination source locations, i.e., waste dumps, tailing dams, pits and possible pathways through the subsurface, and to design a remediation strategy for rehabilitation. This study presents an illustrative application of modeling the flow and transport processes and monitoring network design in a study area hydrogeologically resembling an abandoned mine site in Queensland, Australia. In this preliminary study, the contaminant transport process modeled does not incorporate the reactive geochemistry of the contaminants. The transport process is modeled considering a generic conservative contaminant for the illustrative purpose of showing the potential application of an optimal monitoring design methodology. This study aims to design optimal monitoring network to: 1) minimize the contaminant solute mass estimation error;2) locate the plume boundary;3) select the monitoring locations with (potentially) high concentrations. A linked simulation optimization based methodology is utilized for optimal monitoring network design. The methodology is applied utilizing a recently developed software package CARE-GWMNd, developed at James Cook University for optimal monitoring network design. Given the complexity of the groundwater systems and the sparsity of pollutant concentration observation data from the field, this software is capable of simulating the groundwater flow and solute transport with spatial interpolation of data from a sparse set of available data, and it utilizes the optimization algorithm to determine optimum

关键词： Groundwater Contamination Optimal Monitoring Network design Linked Simulation Optimization Methodology Kriging Interpolation Mine Site Contamination

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