Results 71 to 80 of about 62,736 (280)

Unveiling the redback nature of the low-mass X-ray binary XSSJ1227.0-4859 through optical observations [PDF]

, 2014
The peculiar low mass X-ray binary XSSJ12270-4859, associated with the Fermi/LAT source 2FGLJ1227.7-4853, was in a X-ray, gamma-ray and optical low-luminosity persistent state for about a decade until the end of 2012, when it has entered into the dimmest
Bonnet-Bidaud, J. -M., Buckley, D. A. H., Casares, J., Coppejans, R., de Martino, D., Gulbis, A. A. S., Kotze, M. M., Mason, E., Mouchet, M.   +8 more
core   +2 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Mathematically Processed UV Spectroscopic Method for Quantification of Chlorthalidone and Azelnidipine in Bulk and Formulation: Evaluation of Greenness and Whiteness

Journal of Spectroscopy, 2022
A simple, eco-friendly four analytical methods were established by improving the selectivity through the application of mathematical processing of UV absorption spectra for concurrent quantification of chlorthalidone (CTL) and azelnidipine (AZE).
Mahesh Attimarad, Muhammad Shahzad Chohan, Venugopala Katharigatta Narayanaswamy, Anroop Balachandran Nair, N. Sreeharsha, Sheeba Shafi, Marysheela David, Abdulmalek Ahmed Balgoname, Abdulrahman Ibrahim Altaysan, Efren II Plaza Molina, Pran Kishore Deb   +10 more
doaj   +1 more source

Blue large-amplitude pulsators as a new class of variable stars

, 2017
Regular intrinsic brightness variations observed in many stars are caused by pulsations. These pulsations provide information on the global and structural parameters of the star.
Angeloni, R., di Mille, F., Dziembowski, W. A., Kozlowski, S., Latour, M., Mroz, P., Pawlak, M., Pietrukowicz, P., Poleski, R., Skowron, D., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Wyrzykowski, L.   +15 more
core   +2 more sources

Detecting transit signatures of exoplanetary rings using SOAP3.0 [PDF]

, 2017
CONTEXT. It is theoretically possible for rings to have formed around extrasolar planets in a similar way to that in which they formed around the giant planets in our solar system. However, no such rings have been detected to date. AIMS: We aim to test
Akinsanmi, B., Barros, S. C. C., Oshagh, M., Santos, N. C.   +3 more
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

U Geminorum: a test case for orbital parameters determination

, 2007
High-resolution spectroscopy of U Gem was obtained during quiescence. We did not find a hot spot or gas stream around the outer boundaries of the accretion disk. Instead, we detected a strong narrow emission near the location of the secondary star.
Berriman G., Cook L. M., Echevarria J., Echevarria J., Eduardo de la Fuente, Friend M. T., Hind J. R., Horne K., Juan Echevarría, Marsh T. R., Rafael Costero, Smak J., Smak J., Smak J., Smak J., Warner B., Zahn J.-P.   +16 more
core   +1 more source

Ameliorating Systematic Uncertainties in the Angular Clustering of Galaxies: A Study using SDSS-III [PDF]

, 2011
We investigate the effects of potential sources of systematic error on the angular and photometric redshift, z_phot, distributions of a sample of redshift 0.4 < z < 0.7 massive galaxies whose selection matches that of the Baryon Oscillation Spectroscopic
Blanton, Michael, Brinkmann, J., Crittenden, Robert, Cuesta, Antonio J., da Costa, Luiz A. N., de Simoni, Fernando, Guo, Hong, Hernandez-Monteagudo, Carlos, Ho, Shirley, Kazin, Eyal, Maia, Marcio A. G., Maraston, Claudia, Masters, Karen L., Myers, Adam D., Nichol, Robert C., Padmanabhan, Nikhil, Percival, Will J., Prada, Francisco, Ramos, Beatriz, Ross, Ashley J, Sanchez, Ariel, Schlafly, Edward F., Schlegel, David J., Schneider, Donald P., Seo, Hee Jong, Skibba, Ramin, Thomas, Daniel, Tojeiro, Rita, Wake, David, Weaver, Benjamin A., White, Martin, Zehavi, Idit   +31 more
core   +4 more sources

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Photometric and spectroscopic study of five pre-main sequence stars in the vicinity of NGC 7129 [PDF]

Serbian Astronomical Journal, 2019
We present results from long-term optical photometric and spectroscopic observations of five pre-main sequence stars, located in the vicinity of the bright nebula NGC 7129.
Semkov E.H., Ibryamov S.I., Peneva S.P.
doaj   +1 more source