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https://www.readbyqxmd.com/read/28339273/search-for-electronic-recoil-event-rate-modulation-with-4-years-of-xenon100-data
#1
E Aprile, J Aalbers, F Agostini, M Alfonsi, F D Amaro, M Anthony, F Arneodo, P Barrow, L Baudis, B Bauermeister, M L Benabderrahmane, T Berger, P A Breur, A Brown, E Brown, S Bruenner, G Bruno, R Budnik, L Bütikofer, J Calvén, J M R Cardoso, M Cervantes, D Cichon, D Coderre, A P Colijn, J Conrad, J P Cussonneau, M P Decowski, P de Perio, P Di Gangi, A Di Giovanni, S Diglio, G Eurin, J Fei, A D Ferella, A Fieguth, D Franco, W Fulgione, A Gallo Rosso, M Galloway, F Gao, M Garbini, C Geis, L W Goetzke, Z Greene, C Grignon, C Hasterok, E Hogenbirk, R Itay, B Kaminsky, G Kessler, A Kish, H Landsman, R F Lang, D Lellouch, L Levinson, Q Lin, S Lindemann, M Lindner, J A M Lopes, A Manfredini, I Maris, T Marrodán Undagoitia, J Masbou, F V Massoli, D Masson, D Mayani, M Messina, K Micheneau, B Miguez, A Molinario, M Murra, J Naganoma, K Ni, U Oberlack, P Pakarha, B Pelssers, R Persiani, F Piastra, J Pienaar, V Pizzella, M-C Piro, G Plante, N Priel, L Rauch, S Reichard, C Reuter, A Rizzo, S Rosendahl, N Rupp, J M F Dos Santos, G Sartorelli, M Scheibelhut, S Schindler, J Schreiner, M Schumann, L Scotto Lavina, M Selvi, P Shagin, M Silva, H Simgen, M V Sivers, A Stein, D Thers, A Tiseni, G Trinchero, C Tunnell, H Wang, Y Wei, C Weinheimer, J Wulf, J Ye, Y Zhang
We report on a search for electronic recoil event rate modulation signatures in the XENON100 data accumulated over a period of 4 yr, from January 2010 to January 2014. A profile likelihood method, which incorporates the stability of the XENON100 detector and the known electronic recoil background model, is used to quantify the significance of periodicity in the time distribution of events. There is a weak modulation signature at a period of 431_{-14}^{+16} day in the low energy region of (2.0-5.8) keV in the single scatter event sample, with a global significance of 1...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28339231/chiral-dark-sector
#2
Raymond T Co, Keisuke Harigaya, Yasunori Nomura
We present a simple and natural dark sector model in which dark matter particles arise as composite states of hidden strong dynamics and their stability is ensured by accidental symmetries. The model has only a few free parameters. In particular, the gauge symmetry of the model forbids the masses of dark quarks, and the confinement scale of the dynamics provides the unique mass scale of the model. The gauge group contains an Abelian symmetry U(1)_{D}, which couples the dark and standard model sectors through kinetic mixing...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28336618/in-search-for-unseen-matter-physicists-turn-to-dark-sector
#3
Adrian Cho
No abstract text is available yet for this article.
March 24, 2017: Science
https://www.readbyqxmd.com/read/28334666/bio-refractory-dissolved-organic-matter-and-colorants-in-cassava-distillery-wastewater-characterization-coagulation-treatment-and-mechanisms
#4
Ming Zhang, Zhou Wang, Penghui Li, Hua Zhang, Li Xie
An important portion of organic matter and colorants still remain in the biologically treated distillery wastewater, leaving the dark brown and odorous downstream with the heavy loading of chemical oxygen demand and the potential of forming disinfection byproducts. However, those bio-recalcitrant colorants have not been clearly recognized. The current study investigated the features of the bio-refractory organic matter and colorants in a typical distillery effluent, cassava distillery wastewater; special attention was paid to their change and behaviors in the coagulation treatment following the bio-processes...
March 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28333270/environmental-and-genetic-modulation-of-the-phenotypic-expression-of-antibiotic-resistance
#5
Diarmaid Hughes, Dan I Andersson
Antibiotic resistance can be acquired by mutation or horizontal transfer of a resistance gene, and generally an acquired mechanism results in a predictable increase in phenotypic resistance. However, recent findings suggest that the environment and/or the genetic context can modify the phenotypic expression of specific resistance genes/mutations. An important implication from these findings is that a given genotype does not always result in the expected phenotype. This dissociation of genotype and phenotype has important consequences for clinical bacteriology and for our ability to predict resistance phenotypes from genetics and DNA sequences...
March 8, 2017: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/28320645/interactive-exploration-of-cosmological-dark-matter-simulation-data
#6
Aaron Scherzinger, Tobias Brix, Dominik Drees, Andreas Volker, Kiril Radkov, Niko Santalidis, Alexander Fieguth, Klaus H Hinrichs
The winning entry of the 2015 IEEE Scientific Visualization Contest, this article describes a visualization tool for cosmological data resulting from dark-matter simulations. The proposed system helps users explore all aspects of the data at once and receive more detailed information about structures of interest at any time. Moreover, novel methods for visualizing and interactively exploring dark-matter halo substructures are proposed.
March 2017: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/28319259/label-free-identification-of-the-microstructure-of-rat-spinal-cords-based-on-nonlinear-optical-microscopy
#7
C X Liao, Z Y Wang, Y Zhou, L Q Zhou, X Q Zhu, W G Liu, J X Chen
The spinal cord is a vital link between the brain and the body and mainly comprises neurons, glial cells and nerve fibres. In this work, nonlinear optical (NLO) microscopy based on intrinsic tissue properties was employed to label-freely analyze the cells and matrix in spinal cords at a molecular level. The high-resolution and high-contrast NLO images of unstained spinal cords demonstrate that NLO microscopy has the ability to show the microstructure of white and grey matter including ventral horn, intermediate area, dorsal horns, ventral column, lateral column and dorsal column...
March 20, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28306304/dielectric-haloscopes-a-new-way-to-detect-axion-dark-matter
#8
Allen Caldwell, Gia Dvali, Béla Majorovits, Alexander Millar, Georg Raffelt, Javier Redondo, Olaf Reimann, Frank Simon, Frank Steffen
We propose a new strategy to search for dark matter axions in the mass range of 40-400 μeV by introducing dielectric haloscopes, which consist of dielectric disks placed in a magnetic field. The changing dielectric media cause discontinuities in the axion-induced electric field, leading to the generation of propagating electromagnetic waves to satisfy the continuity requirements at the interfaces. Large-area disks with adjustable distances boost the microwave signal (10-100 GHz) to an observable level and allow one to scan over a broad axion mass range...
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28306299/graviton-mass-might-reduce-tension-between-early-and-late-time-cosmological-data
#9
Antonio De Felice, Shinji Mukohyama
The standard cold dark matter model with a cosmological constant (Λ-CDM) predicts a growth of structures which tends to be higher than the values of redshift space distortion (RSD) measurements if the cosmological parameters are fixed by the cosmic microwave background data. In this Letter, we point out that this discrepancy can be resolved or understood if we assume that the graviton has a small but nonzero mass. In the context of the minimal theory of massive gravity (MTMG), due to infrared Lorentz violations measurable only at present cosmological scales, the graviton acquires a mass without being haunted by unwanted extra degrees of freedom...
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28300118/strongly-baryon-dominated-disk-galaxies-at-the-peak-of-galaxy-formation-ten-billion-years-ago
#10
R Genzel, N M Förster Schreiber, H Übler, P Lang, T Naab, R Bender, L J Tacconi, E Wisnioski, S Wuyts, T Alexander, A Beifiori, S Belli, G Brammer, A Burkert, C M Carollo, J Chan, R Davies, M Fossati, A Galametz, S Genel, O Gerhard, D Lutz, J T Mendel, I Momcheva, E J Nelson, A Renzini, R Saglia, A Sternberg, S Tacchella, K Tadaki, D Wilman
In the cold dark matter cosmology, the baryonic components of galaxies-stars and gas-are thought to be mixed with and embedded in non-baryonic and non-relativistic dark matter, which dominates the total mass of the galaxy and its dark-matter halo. In the local (low-redshift) Universe, the mass of dark matter within a galactic disk increases with disk radius, becoming appreciable and then dominant in the outer, baryonic regions of the disks of star-forming galaxies. This results in rotation velocities of the visible matter within the disk that are constant or increasing with disk radius-a hallmark of the dark-matter model...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28300095/astrophysics-distant-galaxies-lack-dark-matter
#11
Mark Swinbank
No abstract text is available yet for this article.
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28294110/proposal-for-dark-exciton-based-chemical-sensors
#12
Maja Feierabend, Gunnar Berghäuser, Andreas Knorr, Ermin Malic
The rapidly increasing use of sensors throughout different research disciplines and the demand for more efficient devices with less power consumption depends critically on the emergence of new sensor materials and novel sensor concepts. Atomically thin transition metal dichalcogenides have a huge potential for sensor development within a wide range of applications. Their optimal surface-to-volume ratio combined with strong light-matter interaction results in a high sensitivity to changes in their surroundings...
March 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28291332/metal-substrate-mediated-plasmon-hybridization-in-a-nanoparticle-dimer-for-photoluminescence-line-width-shrinking-and-intensity-enhancement
#13
Guang-Can Li, Yong-Liang Zhang, Jing Jiang, Yu Luo, Dang Yuan Lei
Metal-film-coupled nanoparticles with subnanometer particle-film gaps possess an ultrasmall mode volume, responsible for a variety of intriguing phenomena in plasmonic nanophotonics. Due to the large radiative loss associated with dipolar coupling, however, the plasmonic-film-coupled nanocavities usually feature a low-quality factor, setting an ultimate limit of the increased light-matter interaction strength. Here, we demonstrate a plasmonic nanocavity composed of a metal-film-coupled nanoparticle dimer, exhibiting a significantly improved quality factor...
March 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28290543/exploring-the-under-investigated-microbial-dark-matter-of-drinking-water-treatment-plants
#14
Antonia Bruno, Anna Sandionigi, Ermanno Rizzi, Marzia Bernasconi, Saverio Vicario, Andrea Galimberti, Clementina Cocuzza, Massimo Labra, Maurizio Casiraghi
Scientists recently reported the unexpected detection of unknown or poorly studied bacterial diversity in groundwater. The ability to uncover this neglected biodiversity mainly derives from technical improvements, and the term "microbial dark matter" was used to group taxa poorly investigated and not necessarily monophyletic. We focused on such under-investigated microbial dark matter of drinking water treatment plant from groundwater, across carbon filters, to post-chlorination. We tackled this topic using an integrated approach where the efficacy of stringent water filtration (10000 MWCO) in recovering even the smallest environmental microorganisms was coupled with high-throughput DNA sequencing to depict an informative spectrum of the neglected microbial diversity...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28284378/the-tubulointerstitium-dark-matter
#15
EDITORIAL
Jerry Yee
No abstract text is available yet for this article.
March 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/28277514/tribute-vera-rubin-and-the-dark-matter-problem
#16
Albert Bosma
No abstract text is available yet for this article.
March 8, 2017: Nature
https://www.readbyqxmd.com/read/28272137/the-microbiota-and-hiv-shedding-light-on-dark-matters
#17
James J Goedert
No abstract text is available yet for this article.
March 27, 2017: AIDS
https://www.readbyqxmd.com/read/28261669/environmental-viral-genomes-shed-new-light-on-virus-host-interactions-in-the-ocean
#18
Yosuke Nishimura, Hiroyasu Watai, Takashi Honda, Tomoko Mihara, Kimiho Omae, Simon Roux, Romain Blanc-Mathieu, Keigo Yamamoto, Pascal Hingamp, Yoshihiko Sako, Matthew B Sullivan, Susumu Goto, Hiroyuki Ogata, Takashi Yoshida
Metagenomics has revealed the existence of numerous uncharacterized viral lineages, which are referred to as viral "dark matter." However, our knowledge regarding viral genomes is biased toward culturable viruses. In this study, we analyzed 1,600 (1,352 nonredundant) complete double-stranded DNA viral genomes (10 to 211 kb) assembled from 52 marine viromes. Together with 244 previously reported uncultured viral genomes, a genome-wide comparison delineated 617 genus-level operational taxonomic units (OTUs) for these environmental viral genomes (EVGs)...
March 2017: MSphere
https://www.readbyqxmd.com/read/28260982/likelihood-analysis-of-supersymmetric-su-5-guts
#19
E Bagnaschi, J C Costa, K Sakurai, M Borsato, O Buchmueller, R Cavanaugh, V Chobanova, M Citron, A De Roeck, M J Dolan, J R Ellis, H Flächer, S Heinemeyer, G Isidori, M Lucio, D Martínez Santos, K A Olive, A Richards, K J de Vries, G Weiglein
We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter space of the models studied has seven parameters: a universal gaugino mass [Formula: see text], distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), [Formula: see text] and [Formula: see text], and for the [Formula: see text] and [Formula: see text] Higgs representations [Formula: see text] and [Formula: see text], a universal trilinear soft SUSY-breaking parameter [Formula: see text], and the ratio of Higgs vevs [Formula: see text]...
2017: European Physical Journal. C, Particles and Fields
https://www.readbyqxmd.com/read/28260657/removal-of-30-active-pharmaceutical-ingredients-in-surface-water-under-long-term-artificial-uv-irradiation
#20
Kristin M Blum, Sara H Norström, Oksana Golovko, Roman Grabic, Josef D Järhult, Olga Koba, Hanna Söderström Lindström
This study investigated the i) kinetics, and ii) proportion of photolysis of 30 relatively stable active pharmaceutical ingredients (APIs) during artificial UV irradiation for 28 d in ammonium acetate buffer, filtered and unfiltered river water. Buffer was included to control removal kinetics under stable pH conditions and without particulate matter. Dark controls were used to determine removal due to other processes than photolysis and calculate the proportion of photolysis of the total removal. The removal of each API in each matrix was determined using online solid phase extraction/liquid chromatography tandem mass spectrometry (online SPE/LC-MS/MS)...
February 15, 2017: Chemosphere
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