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The earliest phases of high-mass star formation, as seen in NGC 6334 by <i>Herschel</i>-HOBYS
Tigé,, J.,Motte, F.,Russeil, D.,Zavagno, A.,Hennemann, M.,Schneider, N.,Hill, T.,Nguyen Luong, Q.,Di Francesco, J.,Bontemps, S.,Louvet, F.,Didelon, P.,Kö,nyves, V.,André,, Ph.,Leuleu, Springer-Verlag 2017 Astronomy and astrophysics Vol.602 No.-
Comprehensive Analysis of Alternative Splicing Across Tumors from 8, 705 Patients
Kahles, André,Lehmann, Kjong-Van,Toussaint, Nora C.,Hü,ser, Matthias,Stark, Stefan G.,Sachsenberg, Timo,Stegle, Oliver,Kohlbacher, Oliver,Sander, Chris,Rä,tsch, Gunnar Elsevier Science B.V., Amsterdam 2018 Cancer cell Vol.34 No.2
Albert, A.,André,, M.,Anghinolfi, M.,Anton, G.,Ardid, M.,Aubert, J.-J.,Avgitas, T.,Baret, B.,Barrios-Martí,, J.,Basa, S.,Bertin, V.,Biagi, S.,Bormuth, R.,Bourret, S.,Bouwhuis, M. C.,Bruijn American Physical Society 2017 Physical review. D Vol.96 No.2
<P>The Advanced LIGO observatories detected gravitational waves from two binary black hole mergers during their first observation run (O1). We present a high-energy neutrino follow-up search for the second gravitational wave event, GW151226, as well as for gravitational wave candidate LVT151012. We find two and four neutrino candidates detected by IceCube, and one and zero detected by ANTARES, within +/- 500 s around the respective gravitational wave signals, consistent with the expected background rate. None of these neutrino candidates are found to be directionally coincident with GW151226 or LVT151012. We use nondetection to constrain isotropic-equivalent high-energy neutrino emission from GW151226, adopting the GW event's 3D localization, to less than 2 x 10(51)-2 x 10(54) erg.</P>
Albert, A.,André,, M.,Anghinolfi, M.,Ardid, M.,Aubert, J.-J.,Aublin, J.,Avgitas, T.,Baret, B.,Barrios-Martí,, J.,Basa, S.,Belhorma, B.,Bertin, V.,Biagi, S.,Bormuth, R.,Bourret, S.,Bouwhuis American Astronomical Society 2017 ASTROPHYSICAL JOURNAL LETTERS - Vol.850 No.2
<P>The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merger of this binary was also recorded by the Fermi Gamma-ray Burst Monitor (Fermi-GBM), and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), indicating particle acceleration by the source. The precise location of the event was determined by optical detections of emission following the merger. We searched for high-energy neutrinos from the merger in the GeV-EeV energy range using the ANTARES, IceCube, and Pierre Auger Observatories. No neutrinos directionally coincident with the source were detected within +/- 500 s around the merger time. Additionally, no MeV neutrino burst signal was detected coincident with the merger. We further carried out an extended search in the direction of the source for high-energy neutrinos within the 14 day period following the merger, but found no evidence of emission. We used these results to probe dissipation mechanisms in relativistic outflows driven by the binary neutron star merger. The non-detection is consistent with model predictions of short GRBs observed at a large off-axis angle.</P>
Evidence for moiré excitons in van der Waals heterostructures
Tran, Kha,Moody, Galan,Wu, Fengcheng,Lu, Xiaobo,Choi, Junho,Kim, Kyounghwan,Rai, Amritesh,Sanchez, Daniel A.,Quan, Jiamin,Singh, Akshay,Embley, Jacob,Zepeda, André,Campbell, Marshall,Autry, Trav Springer Science and Business Media LLC 2019 Nature Vol.567 No.7746
Diffusion Control of Porous Membrane by Modifying the Nanopore Properties
Kim, Mi Hee,Ayral, André,Park, Chung-Berm,Choy, Jin-Ho,Oh, Jae-Min American Scientific Publishers 2011 Journal of Nanoscience and Nanotechnology Vol.11 No.2
<P>We have investigated the diffusion of various solvents on nanoporous membranes with various pore size and surface energy. We have modified the size of pore channel and surface energy of porous membrane through grafting different sized alkyl chain on inorganic membranes. Typically, disc type zirconia membranes with pore size of 3 nm and silica ones with 1 nm pore were purchased from Inocermic Co. Ltd. (Germany), and the surface and pore channel was modified by either octyltriethoxysilane (OTS) with chain length approximately 1 nm or pentyltriethoxysilane (PTS) with chain length approximately 0.5 nm. The water contact angles of both OTS and PTS grafted membrane were larger than 100 degrees indicating the hydrophobically modified surface. Contact angles of hydrophilic and hydrophobic solvents were also examined to obtain exact surface energy (gamma(sv)) of grafted membrane, and the values were determined to be 56.3, 45.3, and 42.2 mN/m for ungrafted, PTS- and OTS-grafted membrane, respectively. The solvent diffusion patterns were evaluated by measuring the concentration gradient of small dye molecule, azobenzene. The diffusion coefficients of various solvents were measured on the basis of Fick's diffusion law. It was concluded that the diffusivity is dependent on the pore size for solvent with low surface tension and on the gamma(sv) value for solvent with high surface tension.</P>
On the size of the F-test for the one-way random model with heterogeneous error variances
Lee, Juneyoung,Khuri, André,I.,Kim, Kee Whan,Lee, Sangkon Taylor Francis 2007 JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION Vol.77 No.6
<P> Traditional analysis of variance tests are based on the assumption of homogeneous error variances, which often fails in real experimental situations. Violation of this assumption affects not only the power of the standard F-test, but also its size. When a design is unbalanced, the effect of unequal error variances is even more complex. In this paper, we study the effect of heterogeneous error variances on the size of the F-test concerning the among-group variance component in an unbalanced random one-way model. We also provide a method for computing the true critical value of the F-test for a given level of significance.</P>