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The JCMT Gould Belt Survey: First results from the Corona Australis molecular cloud and evidence of variable dust emissivity indices in the Coronet region

arXiv

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arXiv 2025年

作者： Pattle, Kate Bresnahan, david Ward-Thompson, derek Kirk, Helen Kirk, Jason M. Berry, david S. Broekhoven-Fiene, Hannah Hatchell, Jenny Jenness, Tim Johnstone, doug Mottram, J.C. duarte-Cabral, Ana di Francesco, James Hogerheijde, M.R. Bastien, Pierre Butner, Harold Chen, Michael Chrysostomou, Antonio Coudé, Simon Currie, Malcolm J. davis, C.J. drabek-Maunder, Emily Fich, M. Fiege, J. Friberg, Per Friesen, Rachel Fuller, Gary A. Graves, Sarah Greaves, Jane Holland, Wayne Joncas, G. Knee, l.B.G. Mairs, Steve Marsh, Ken Matthews, Brenda C. Moriarty-Schieven, Gerald Mowat, C. Rawlings, Jonathan Retter, B. Richer, John Robertson, d. Rosolowsky, E. Sadavoy, Sarah Thomas, H. Tothill, N. Viti, Serena White, G.J. Wouterloot, J. Yates, J. Zhu, M. Department of Physics and Astronomy University College London Gower Street LondonWC1E 6BT United Kingdom Jeremiah Horrocks Institute University of Central Lancashire Preston LancashirePR1 2HE United Kingdom NRC Herzberg Astronomy and Astrophysics 5071 West Saanich Rd VictoriaBCV9E 2E7 Canada Joint Astronomy Centre 660 N. A'ohōkū Place University Park HiloHI96720 United States Department of Physics and Astronomy University of Victoria VictoriaBCV8P 5C2 Canada Physics and Astronomy University of Exeter Stocker Road ExeterEX4 4QL United Kingdom Vera C. Rubin Observatory 950 N. Cherry Ave TucsonAZ United States Leiden Observatory Leiden University PO Box 9513 Leiden2300 RA Netherlands Max-Planck Institute for Astronomy Königstuhl 17 Heidelberg69117 Germany School of Physics and Astronomy Cardiff University The Parade CardiffCF24 3AA United Kingdom Anton Pannekoek Institute for Astronomy University of Amsterdam PO Box 94249 Amsterdam1090 GE Netherlands Université de Montréal Centre de Recherche en Astrophysique du Québec et Département de Physique C.P. 6128 succ. centre-ville MontréalQCH3C 3J7 Canada James Madison University HarrisonburgVA22807 United States The Department of Physics Engineering & Astronomy Queen's University Stirling Hall 64 Bader Lane KingstonONK7L 3N6 Canada SKA Observatory Jodrell Bank Lower Withington MacclesfieldSK11 9FT United Kingdom Department of Earth Environment and Physics Worcester State University WorcesterMA01602 United States Center for Astrophysics | Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States National Science Foundation 2415 Eisenhower Avenue AlexandriaVA22314 United States Medical Imaging and Biomedical Engineering University College London Gower Street LondonWC1E 6BT United Kingdom Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Dept of Physics & Astronomy University of Manitoba WinnipegMBR3T 2N2 Canada Dunlap In

We present 450μm and 850μm James Clerk Maxwell Telescope (JCMT) observations of the Corona Australis (CrA) molecular cloud taken as part of the JCMT Gould Belt legacy Survey (GBlS). We present a catalogue of 39 starless and protostellar sources, for which we determine source temperatures and masses using SCUBA-2 450μm/850μm flux density ratios for sources with reliable 450μm detections, and compare these to values determined using temperatures measured by the Herschel Gould Belt Survey (HGBS). In keeping with previous studies, we find that SCUBA-2 preferentially detects high-volume-density starless cores, which are most likely to be prestellar (gravitationally bound). We do not observe any anti-correlation between temperature and volume density in the starless cores in our sample. Finally, we combine our SCUBA-2 and Herschel data to perform SEd fitting from 160-850μm across the central Coronet region, thereby measuring dust temperature T, dust emissivity index β and column density N(H2) across the Coronet. We find that β varies across the Coronet, particularly measuring β = 1.55 ± 0.35 in the colder starless SMM-6 clump to the north of the B star R CrA. This relatively low value of β is suggestive of the presence of large dust grains in SMM-6, even when considering the effects of T − β fitting degeneracy and 12CO contamination of SCUBA-2 850μm data on the measured β values. Copyright © 2025, The Authors. All rights reserved.

关键词： Stars

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New collective structures in Au179 and their implications for the triaxial deformation of the Pt178 core

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Physical Review C 2022年第6期106卷 064324-064324页

作者： M. Balogh E. Jajčišinová M. Venhart A. Herzáň J. l. Wood d. T. Joss F. A. Ali K. Auranen S. Bánovská M. Bírová R. J. Carroll d. M. Cox J. G. Cubiss T. davis M. C. drummond P. T. Greenlees T. Grahn A. Gredley J. Henderson U. Jakobsson R. Julin S. Juutinen G. Kantay J. Konki P. Konopka M. leino V. Matoušek A. K. Mistry C. G. McPeake d. O'donnell R. d. Page J. Pakarinen P. Papadakis J. Partanen P. Peura P. Rahkila P. Ruotsalainen M. Sandzelius J. Sarén B. Saygı M. Sedlák d. Seweryniak C. Scholey J. Sorri A. Špaček S. Stolze M. Taylor A. Thornthwaite J. Uusitalo M. Veselský S. Vielhauer F. P. Wearing Institute of Physics Slovak Academy of Sciences SK-84511 Bratislava Slovakia INFN Laboratori Nazionali di Legnaro IT-35020 Padova Italy Department of Physics Georgia Institute of Technology Atlanta Georgia 30332 USA Department of Physics Oliver Lodge Laboratory University of Liverpool Liverpool L69 7ZE United Kingdom Department of Physics College of Science Education University of Sulaimani P.O. Box 334 Sulaimani Kurdistan Region Iraq Accelerator Laboratory Department of Physics University of Jyväskylä FI-40014 Jyväskylä Finland Department of Physics Lund University 22100 Lund Sweden Department of Physics University of York York YO10 5DD United Kingdom Department of Physics University of York Heslington York YO10 5DD United Kingdom Institut für Kernphysik Technische Universität Darmstadt Darmstadt D-64289 Germany School of Computing Engineering & Physical Sciences University of the West of Scotland Paisley PA1 2BE United Kingdom Ege University Faculty of Science Department of Physics 35100 Bornova Izmir Turkey Physics Division Argonne National Laboratory Argonne Illinois 60439 USA The University of Manchester School of Physics and Astronomy Oxford Road M13 9PL Manchester United Kingdom Institute of Experimental and Applied Physics Czech Technical University Prague 110 00 Czech Republic

The extremely neutron-deficient isotope Au179 has been studied by a combination of in-beam γ-ray and isomeric-decay spectroscopy. For in-beam spectroscopy, the recoil-isomer tagging technique was employed, using the known 3/2−, T1/2=328 ns isomer. A new rotational band, associated with the unfavored signature band of the 1h9/2⊕2f7/2 proton-intruder configuration, was revealed. A previously unknown, high-spin isomeric state with an excitation energy of 1743(17) keV and T1/2=2.16(8)µs was discovered. Five decay paths were identified, some of them feeding previously unknown non-yrast excited states, associated with the 1i13/2 proton-intruder configuration. Calculations based on the particle-plus-triaxial-rotor model were performed to interpret the data. On the basis of these calculations, the new 1h9/2⊕2f7/2 rotational band is interpreted as due to triaxial deformation of the underlying configuration with β2≈0.26 and γ≈27∘. Observed non-yrast states of the positive-parity 1i13/2 intruder configuration are interpreted as due to triaxial deformation with β2≈0.26 and γ≈20∘.

关键词： Collective levels Isomer decays lifetimes & widths Nuclear structure & decays 150 ≤ A ≤ 189

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Reward Processing in Novelty Seekers: A Transdiagnostic Psychiatric Imaging Biomarker

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BIOlOGICAl PSYCHIATRY 2021年第8期90卷 529-539页

作者： Qi, Shile Schumann, Gunter Bustillo, Juan Turner, Jessica A. Jiang, Rongtao Zhi, dongmei Fu, Zening Mayer, Andrew R. Vergara, Victor M. Silva, Rogers F. Iraji, Armin Chen, Jiayu damaraju, Eswar Ma, Xiaohong Yang, Xiao Stevens, Michael Mathalon, daniel H. Ford, Judith M. Voyvodic, James Mueller, Bryon A. Belger, Aysenil Potkin, Steven G. Preda, Adrian Zhuo, Chuanjun Xu, Yong Chu, Congying Banaschewski, Tobias Barker, Gareth J. Bokde, Arun l. W. Quinlan, Erin Burke desrivieres, Sylvane Flor, Herta Grigis, Antoine Garavan, Hugh Gowland, Penny Heinz, Andreas Martinot, Jean-luc Martinot, Marie-laure Paillere Artiges, Eric Nees, Frauke Orfanos, dimitri Papadopoulos Paus, Tomas Poustka, luise Hohmann, Sarah Frohner, Juliane H. Smolka, Michael N. Walter, Henrik Whelan, Robert Calhoun, Vince d. Sui, Jing [a]Tri-institutional Center for Translational Research in Neuroimaging and Data Science Georgia State University Georgia Institute Technology and Emory University Atlanta Georgia [b]Department of Psychiatry University of New Mexico Albuquerque New Mexico [c]Department of Psychology Georgia State University Atlanta Georgia [d]Olin Neuropsychiatry Research Center Hartford Connecticut [e]Department of Psychiatry University of California San Francisco San Francisco California [f]Department of Radiology Duke University Durham North Carolina [g]Department of Psychiatry University of North Carolina at Chapel Hill Chapel Hill North Carolina [h]Department of Psychiatry University of Minnesota Minneapolis Minnesota [i]Department of Psychiatry University of California Irvine Irvine California [j]Departments of Psychiatry and Psychology University of Vermont Burlington Vermont [k]Centre for Population Neuroscience and Stratified Medicine Institute for Science and Technology of Brain-Inspired Intelligence Fudan University Shanghai China [l]University of Chinese Academy of Sciences Beijing China [dd]Department of Computer Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing China [m]Brainnetome Center and National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing China [ee]State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal University Beijing China [n]Psychiatric Laboratory and Mental Health Center the State Key Laboratory of Biotherapy West China Hospital of Sichuan University Chengdu China [o]Department of Psychiatric-Neuroimaging-Genetics and Morbidity Laboratory Nankai University Affiliated Anding Hospital Tianjin China [p]Department of Humanities and Social Science Shanxi Medical University Taiyuan China [q]Department of Psychiatry and Psychotherapy Charité – Universitätsmedizin Berlin Campus Charité Mitte corporate member of Freie Universität Berlin Humboldt-Univers

BACKGROUNd: dysfunctional reward processing is implicated in multiple mental disorders. Novelty seeking (NS) assesses preference for seeking novel experiences, which is linked to sensitivity to reward environmental cues. METHOdS: A subset of 14-year-old adolescents (IMAGEN) with the top 20% ranked high-NS scores was used to identify high-NS-associated multimodal components by supervised fusion. These features were then used to longitudinally predict five different risk scales for the same and unseen subjects (an independent dataset of subjects at 19 years of age that was not used in predictive modeling training at 14 years of age) (within IMAGEN, n z 1100) and even for the corresponding symptom scores of five types of patient cohorts (non-IMAGEN), including drinking (n = 313), smoking (n = 104), attention-deficit/hyperactivity disorder (n = 320), major depressive disorder (n = 81), and schizophrenia (n = 147), as well as to classify different patient groups with diagnostic labels. RESUlTS: Multimodal biomarkers, including the prefrontal cortex, striatum, amygdala, and hippocampus, associated with high NS in 14-year-old adolescents were identified. The prediction models built on these features are able to longitudinally predict five different risk scales, including alcohol drinking, smoking, hyperactivity, depression, and psychosis for the same and unseen 19-year-old adolescents and even predict the corresponding symptom scores of five types of patient cohorts. Furthermore, the identified reward-related multimodal features can classify among attention-deficit/hyperactivity disorder, major depressive disorder, and schizophrenia with an accuracy of 87.2%. CONClUSIONS: Adolescents with higher NS scores can be used to reveal brain alterations in the reward-related system, implicating potential higher risk for subsequent development of multiple disorders. The identified high-NS- associated multimodal reward-related signatures may serve as a transdiagnostic neuroimaging bi

关键词： AdHd Attention-deficit/hyperactivity disorder Major depressive disorders Mdd Novelty seeking Reward processing Schizophrenia Substance use

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Adaptive Sleep Scheduling for Cluster Based Wireless Sensor Networks for Precision Agriculture

Adaptive Sleep Scheduling for Cluster Based Wireless Sensor ...

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International Conference on Advances in Communication and Computing Technology (ICACCT)

作者： S. S.ponde S. S. lomte Computer Science and Engineering Dept D. I. E. M. S. Aurangabad Maharashtra India M. S. Bidve College of Engineering Latur Maharashtra India

ISBN: (纸本)9781538609279

Wireless sensor networks are collection of spatially distributed autonomous sensors called as nodes, which are responsible for monitoring physical or environmental conditions such as temperature, pressure, humidity, etc. and cooperatively passes their data through the network to a main locations. But one major constraint of this network is energy consumption as the sensor nodes are equipped with limited battery power. To minimize energy consumption many algorithms have been applied. The objective of the proposed algorithm Adaptive sleep scheduling algorithm is to schedule the nodes into sleep and active state by comparing its energy with threshold. Entire network is divided into cluster with cluster head is the node with highest energy. The Cluster head is responsible for that state of the node either active or sleep. The proposed algorithm is evaluated and simulated with NS2 and the results are analyzed to show better performance of the algorithm.

关键词： Clustering algorithms Wireless sensor networks Temperature sensors Energy consumption computers Monitoring

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Young, blue, and isolated stellar systems in the Virgo Cluster I. 2-d Optical spectroscopy

arXiv

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arXiv 2022年

作者： Bellazzini, Michele Magrini, laura Jones, Michael G. Sand, david J. Beccari, Giacomo Cresci, Giovanni Spekkens, Kristine Karunakaran, Ananthan Adams, Elizabeth A.K. Zaritsky, dennis Battaglia, Giuseppina Seth, Anil Cannon, John M. Fuson, Jackson Inoue, John l. Mutlu-Pakdil, Burçin Guhathakurta, Puragra Muñoz, Ricardo R. Bennet, Paul Crnojević, denija Caldwell, Nelson Strader, Jay Toloba, Elisa INAF Osservatorio di Astrofisica e Scienza Dello Spazio di Bologna Via Gobetti 93/3 Bologna40129 Italy INAF-Osservatorio Astrofisico di Arcetri Largo E. Fermi 5 Firenze50125 Italy Steward Observatory University of Arizona 933 North Cherry Avenue TucsonAZ85721-0065 United States European Southern Observatory Karl-Schwarzschild-Straße 2 Garching bei MünchenD-85748 Germany Department of Physics and Space Science Royal Military College of Canada P.O. Box 17000 Station Forces Kingston ONK7K 7B4 Canada Department of Physics Engineering Physics and Astronomy Queens University KingstonONK7L 3N6 Canada Glorieta de la Astronomía Granada18008 Spain Department of Physics Engineering Physics and Astronomy Queens University KingstonONK7L 3N6 Canada ASTRON Netherlands Institute for Radio Astronomy Oude Hoogeveensedijk 4 Dwingeloo7991 PD Netherlands Kapteyn Astronomical Institute University of Groningen PO Box 800 Groningen9700 AV Netherlands Instituto de Astrofísica de Canarias Vía Láctea s/n La Laguna38205 Spain Department of Astrophysics University of la Laguna San Cristóbal de La LagunaE-38206 Spain Department of Physics & Astronomy University of Utah Salt Lake CityUT84112 United States Department of Physics & Astronomy Macalester College 1600 Grand Avenue Saint PaulMN55105 United States Kavli Institute for Cosmological Physics University of Chicago ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States UCO/Lick Observatory University of California Santa Cruz 1156 High Street Santa CruzCA95064 United States Departamento de Astronomía Universidad de Chile Camino El Observatorio 1515 Las Condes Santiago Chile Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States University of Tampa 401 West Kennedy Boulevard TampaFL33606 United States Center for Astrophysics Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United State

We use panoramic optical spectroscopy obtained with MUSE@VlT to investigate the nature of five candidate extremely isolated low-mass star forming regions (Blue Candidates, BCs hereafter) toward the Virgo cluster of galaxies. Four of the five (BC1, BC3, BC4, BC5) are found to host several Hii regions and to have radial velocities fully compatible with being part of the Virgo cluster. All the confirmed candidates have mean metallicity significantly in excess of that expected from their stellar mass, indicating that they originated from gas stripped from larger galaxies. In summary, these four candidates share the properties of the prototype system SECCO 1, suggesting the possible emergence of a new class of stellar systems, intimately linked to the complex duty cycle of gas within clusters of galaxies. A thorough discussion on the nature and evolution of these objects is presented in a companion paper, where the results obtained here from MUSE data are complemented with Hubble Space Telescope (optical) and Very large Array (Hi) observations. Copyright © 2022, The Authors. All rights reserved.

关键词： Galaxies

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laser applications for the optical exploration of the dy3+ doped li2O-CaF2-Al2O3-B2O3-SiO2 glasses

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AIP Conference Proceedings 2020年第1期2269卷

作者： d. deenabandhu K. Neeraja K. Ephraim Babu V. Venkata Kumar K. Bueala Kumari K. Samatha V. Veeraiah 1Department of Physics Dr. L. B. College of Engineering for Women Visakhapatnam A.P India 2Department of Physics Narasaraopeta Engineering College(A) Narasarao pet Yellamanda (P.O) Guntur(D.T) Andhra Pradesh 522601 India 3Department of BS&H St. Ann's College of Engineering & Technology Nayunipalli village ChallaReddyPalem Post VetapalemMandal Chirala Prakasam District AP - 523187 India 4Department of Physics Andhra University Visakhapatnam Andhra Pradesh 530003 India

This paper provides details regarding the preparation, optical absorption, emission and FTIR spectral studies on dy3+ doped li2O-CaF2−Al2O3− B2O3− SiO2 glasses. Absorption spectrum reveals different bands and it analyzed by the use of JO-theory. Emission spectra of the samples display two transitions 4F9/2→6H15/2, 4F9/2→6H13/2, a clear enhancement is observed with increase the concentration of dy2O3 ions. The CIE coordinates is measured for these glasses it demonstrates that the glasses produce bright white light, which are appropriate for the improvement of the laser materials and white light lEd's.

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live Birth with or without Preimplantation Genetic Testing for Aneuploidy

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四川生理科学杂志 2021年第10期43卷 1825-1825页

作者： Junhao Yan From the Center for Reproductive Medicine Cheeloo College of Medicine Key Laboratory of Reproductive Endocrinology of the Ministry of Education and the National Research Center for Assisted Reproductive Technology and Reproductive Genetics Shandong University Shandong Key Laboratory of Reproductive Medicine and Shandong Provincial Clinical Research Center for Reproductive Health Jinan (J.Y. Y.Q. H.Z. D.W. J.L. T.N. W.Z. K.W. Y.G. Y.S. Z.-J.C.) the Center for Reproductive Medicine Ren Ji Hospital School of Medicine Shanghai Jiao Tong University Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics (Y.S. Z.-J.C. Y.L. T.Z.) and the Obstetrics and Gynecology Hospital of Fudan University Shanghai JIAI Genetics and IVF Institute Key Laboratory of Female Reproductive Endocrine Related Diseases Obstetrics and Gynecology Hospital of Fudan University (X.S. J.F.) Shanghai the Institute of Reproductive and Stem Cell Engineering School of Basic Medical Science Central South University and Reproductive and Genetic Hospital of CITIC–Xiangya Changsha (F.G. H.M.) the Center for Reproductive Medicine Department of Obstetrics and Gynecology Peking University Third Hospital National Clinical Research Center for Obstetrics and Gynecology Key Laboratory of Assisted Reproduction Ministry of Education and Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology Beijing (R.L.) the Department of Reproductive Medicine the Affiliated Obstetrics and Gynecology Hospital with Nanjing Medical University Nanjing Maternity and Child Health Care Hospital (X.L. J.Z.) and the Department of Reproductive Medicine First Affiliated Hospital of Nanjing Medical University–Jiangsu Province Hospital (X.M. W.W.) Nanjing the Affiliated Suzhou Hospital of Nanjing Medical University Suzhou Municipal Hospital Suzhou (H.L. Q.M.) the Center for Reproductive Medicine of Yantai Yuhuangding Hospital Yantai (C.H.) the Center of Reproductive Medicine Depa

Background:Embryo selection with preimplantation genetic testing for aneuploidy(PGT-A)may improve pregnancy outcomes after initial embryo ***,it remains uncertain whether PGT-A improves the cumulative live-birth rate as compared with conventional in vitro fertilization(IVF).Methods:In this multicenter,randomized,controlled trial,we randomly assigned subfertile women with three or more goodquality blastocysts to undergo either PGT-A or conventional IVF;all the women were between 20 and 37 years of *** blastocysts were screened by next-generation sequencing in the PGT-A group or were chosen by morphologic criteria in the conventional-IVF group and then were successively transferred one by *** primary outcome was the cumulative live-birth rate after up to three embryo-transfer procedures within 1 year after *** hypothesized that the use of PGT-A would result in a cumulative live-birth rate that was no more than 7 percentage points higher than the rate after conventional IVF,which would constitute the noninferiority margin for conventional IVF as compared with PGT-A.

关键词： implantation sized transferred

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The Feasible Job Scheduling Algorithm for Efficient Resource allocation Process in Cloud Environment

The Feasible Job Scheduling Algorithm for Efficient Resource...

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International Conference on Recent Trends in Advance Computing (ICRTAC)

作者： J. Praveenchandar A. Tamilarasi Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science & Technology Chennai Department of Computer Applications Kongu Engineering College Perundurai

ISBN: (纸本)9781538658543;9781538658536

Virtualized environment is the most important emerging area now a day's. It is advisable not to buy the required resources for a specific period of time. Especially small startup companies and some other companies also. Instead of buying these resources for a single time usage, virtualized environment provides the platform for user requirement. In the cloud environment, it is important to check the availability of the resources and keep on monitoring the performance analysis of the overall allocation of resources for all user requests. Because, usage of cloud is getting increased day by day. So the CSP (Cloud Service Provider) should assure the sophisticated user experience to maintain SlA by ensuring the availability and efficiency of the resource consistently. Allocation of resource for a user request is the most important task in this process. In order to enhance the overall system performance and boost the process of resource allocation, varieties of algorithms are being proposed by the researchers. In this proposed work, We have designed an effective job scheduling mechanism based on the size of the job request and arrival time of the same. By the analyzed method some efficiency improvement is archived in resource allocation task, through which the overall system performance is boosted.

关键词： Resource management Cloud computing Scheduling algorithms Task analysis Virtual machining Heuristic algorithms Prediction algorithms

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Camera Calibration for the IceCube Upgrade and Gen2 37

Camera Calibration for the IceCube Upgrade and Gen2

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37th International Cosmic Ray Conference, ICRC 2021

作者： Kang, Woosik lee, Jiwoong Roellinghoff, Gerrit Rott, Carsten Tönnis, Christoph Abbasi, R. Ackermann, M. Adams, J. Aguilar, J.A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A.A. Amin, N.M. An, R. Andeen, K. Anderson, T. Anton, G. Argüelles, C. Ashida, Y. Axani, S. Bai, X. Balagopal, A.V. Barbano, A. Barwick, S.W. Bastian, B. Basu, V. Baur, S. Bay, R. Beatty, J.J. Becker, K.-H. Becker Tjus, J. Bellenghi, C. BenZvi, S. Berley, d. Bernardini, E. Besson, d.Z. Binder, G. Bindig, d. Blaufuss, E. Blot, S. Boddenberg, M. Bontempo, F. Borowka, J. Böser, S. Botner, O. Böttcher, J. Bourbeau, E. Bradascio, F. Braun, J. Bron, S. Brostean-Kaiser, J. Browne, S. Burgman, A. Burley, R.T. Busse, R.S. Campana, M.A. Carnie-Bronca, E.G. Chen, C. Chirkin, d. Choi, K. Clark, B.A. Clark, K. Classen, l. Coleman, A. Collin, G.H. Conrad, J.M. Coppin, P. Correa, P. Cowen, d.F. Cross, R. dappen, C. dave, P. de Clercq, C. delaunay, J.J. dembinski, H. deoskar, K. de Ridder, S. desai, A. desiati, P. de Vries, K.d. de Wasseige, G. de With, M. deYoung, T. dharani, S. diaz, A. díaz-Vélez, J.C. dittmer, M. dujmovic, H. dunkman, M. duVernois, M.A. dvorak, E. Ehrhardt, T. Eller, P. Engel, R. Erpenbeck, H. Evans, J. Evenson, P.A. Fan, K.l. Fazely, A.R. Fiedlschuster, S. Fienberg, A.T. Filimonov, K. Finley, C. Fischer, l. Fox, d. Franckowiak, A. Friedman, E. Fritz, A. Fürst, P. Gaisser, T.K. Gallagher, J. Ganster, E. Garcia, A. Garrappa, S. Gerhardt, l. Ghadimi, A. Glaser, C. Glauch, T. Glüsenkamp, T. Goldschmidt, A. Gonzalez, J.G. Goswami, S. Grant, d. Grégoire, T. Griswold, S. Gündüz, M. Günther, C. Haack, C. Hallgren, A. Halliday, R. Halve, l. Halzen, F. Ha Minh, M. Hanson, K. Hardin, J. Harnisch, A.A. Haungs, A. Hauser, S. Hebecker, d. Helbing, K. Henningsen, F. Hettinger, E.C. Hickford, S. Hignight, J. Hill, C. Hill, G.C. Hoffman, K.d. Hoffmann, R. Hoinka, T. Hokanson-Fasig, B. Hoshina, K. Huang, F. Huber, M. Huber, T. Hultqvist, K. Department of Physics Sungkyunkwan University Suwon16419 Korea Republic of Department of Physics and Astronomy University of Utah Salt Lake CityUT84112 United States Institute of Basic Science Sungkyunkwan University Suwon16419 Korea Republic of III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington 502 Yates St. Science Hall Rm 108 Box 19059 ArlingtonTX76019 United States CTSPS Clark-Atlanta University AtlantaGA30314 United States School of Physics Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Department of Physics Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics Institute for Global Prominent Research Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics Center for Cosmology and

An upgrade to the IceCube Neutrino Telescope is currently under construction. For this IceCube Upgrade, seven new strings will be deployed in the central region of the 86 string IceCube detector to enhance the capability to detect neutrinos in the GeV range. One of the main science objectives of the IceCube Upgrade is an improved calibration of the IceCube detector to reduce systematic uncertainties related to the optical properties of the ice. We have developed a novel optical camera and illumination system that will be part of 700 newly developed optical modules to be deployed with the IceCube Upgrade. A combination of transmission and reflection photographic measurements will be used to measure the optical properties of bulk ice between strings and refrozen ice in the drill hole, to determine module positions, and to survey the local ice environments surrounding the sensor module. In this contribution we present the production design, acceptance testing, and plan for post-deployment calibration measurements with the camera system. © Copyright owned by the author(s).

关键词： Optical properties

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Behaviour of steel - Ceramic waste concrete composite slab

Journal of Structural Engineering (India)

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Journal of Structural engineering (India) 2018年第5期45卷 411-418页

作者： Vakil, Merool Kalariya, Hiral Institute of Research and Development Gujarat Forensic Sciences University Gandhinagar Gujarat382 007 India Department of Applied Mechanics L.D. College of Engineering Ahmedabad380 015 India

In recent years, steel concrete composite slab systems have started gaining attention in developing countries. One of the major advantages of such slab system is substantial reduction in dead load. If slab is made with light weight concrete using waste materials, it can further lead to sustainable and environment-friendly floor option. This paper presents experimental investigations on the load carrying capacity and failure behavior of steel-concrete composite slab using normal concrete and ceramic waste aggregate concrete. Experiments were performed on identical deck sections with two different concrete - normal concrete and concrete made with ceramic wastes as aggregate. Total eight simply supported slabs were tested under two point bending with varying shear span. Out of eight specimens, four specimens were made of normal concrete and other four specimens were prepared of ceramic waste aggregate concrete which were tested with shear span of 300 mm and 550 mm respectively. load at first crack, failure load and deflection were measured in all the cases. Results indicate that both normal concrete and ceramic waste aggregate concrete composite slabs behaved in a similar way in terms of crack patterns, interface slip, load deflection curves and failure loads. load carrying capacity were found slightly higher as 2.7% and 10.87% for longer and shorter shear specimens respectively in case of normal concrete slab as compared to ceramic waste aggregate concrete slab. The experimental moment capacities were compared with analytical predictions using Euro Code 4 recommendations and results indicated good agreement in all specimen. These ceramic waste aggregate concrete slabs were efficient, environment friendly and 8.5% lighter than normal concrete slabs. © 2018 Structural engineering Research Centre. All rights reserved.

关键词： Concrete slabs

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