Results 51 to 60 of about 97,714 (213)

Intermediate mass black holes in AGN disks: I. Production & Growth

, 2012
Here we propose a mechanism for efficiently growing intermediate mass black holes (IMBH) in disks around supermassive black holes. Stellar mass objects can efficiently agglomerate when facilitated by the gas disk.
Alexander, Alibert, Armitage, Armitage, Artymowicz, Artymowicz, B. McKernan, Baruteau, Begelmann, Binney, Bitsch, Chang, Cresswell, Crida, Doherty, Fregeau, Goodman, H. B. Perets, Hopkins, Horn, Islam, Jiang, K. E. S. Ford, Kawawatu, King, Kormendy, Krolik, Levin, Lyra, Madau, McKernan, McKernan, McKernan, McKernan, McKernan, Merritt, Micic, Miller, Miller, Miralda Escudé, Morris, Muto, Nayakshin, Ostriker, Paardekooper, Perets, Perets, Pollack, Portegies-Zwart, Portegies-Zwart, Quinlan, Rauch, Remillard, Schödel, Shakura, Shankar, Sirko, Subr, Syer, Syer, Veras, Vittorini, W. Lyra, Ward, Winter   +64 more
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Strain accommodation through facet matching in La$_\text{1.85}$Sr$_\text{0.15}$CuO$_\text{4}$/Nd$_\text{1.85}$Ce$_\text{0.15}$CuO$_\text{4}$ ramp-edge junctions [PDF]

, 2015
Scanning nano-focused X-ray diffraction (nXRD) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) are used to investigate the crystal structure of ramp-edge junctions between superconducting electron-doped Nd$_\text ...
Coneri, F., Hilgenkamp, H., Hoek, M., Ke, X., Poccia, N., Van Tendeloo, G., Wang, X. Renshaw   +6 more
core   +4 more sources

Study of Antibacterial Effect of Cerium Oxide Nanoparticles on Escherichia Coli Microorganism

Mehran University Research Journal of Engineering and Technology, 2019
In the present work antibacterial effect of NCO (Nano-Cerium Oxide) particles on E.Coli (Escherichia Coli) Bacteria was studied. NCO (Nano Cerium Oxide) particles were synthesized via microwave induced combustion method.
Shoukat Ali Noonari, Umair Aftab, Imtiaz Ali Soomro, Bilal Ahmed Soomro, Akber Ali Pirzada   +4 more
doaj  

An Efficient ISAR Imaging Method for Space Maneuvering Target Based on Multisynchrosqueezing Transform

IEEE Access
This study resolves defocusing artifacts in conventional Range-Doppler (RD) algorithms for Inverse Synthetic Aperture Radar (ISAR) imaging of maneuvering targets by introducing a multi-synchrosqueezing transform (MSST)-based high-resolution imaging ...
Ting Zhao, Chengxiang Zhang, Yu Zheng, Jishen Liang   +3 more
doaj   +1 more source

Study of the reactivity of Kraft and organosolv lignins with 4, 4’–diphenylmethane diisocyanate and characterization of the obtained products [PDF]

, 2011
The interaction of two types of lignins: Kraft lignin (KL), isolated according to the LignoBoost process (Sweden), and Alcell organosolv (OL) lignin (Canada), with 4,4’-diphenylmethane diisocyanate (MDI) in the dry dioxane media at 25 degrees of Celsius,
Arshanitsa, Alexandr, Janceva, Sarmite, Krumina, Lelde, Telysheva, Galina   +3 more
core  

Small and large polarons in nickelates, manganites, and cuprates

, 1997
By comparing the optical conductivities of La_{1.67}Sr_{0.33}NiO_{4} (LSNO), Sr_{1.5}La_{0.5}MnO_4 (SLMO), Nd_2CuO_{4-y} (NCO), and Nd_{1.96}Ce_{0.04}CuO_{4} (NCCO), we have identified a peculiar behavior of polarons in this cuprate family. While in LSNO
A. Bianconi, A. Paolone, A. S. Alexandrov, B. Bucher, B. Ruzicka, C. H. Chen, D. Emin, D. Emin, E. T. Heyen, F. E. Bates, G. A. Thomas, H. G. Reik, J. Devreese, J. P. Falck, P. Calvani, P. Calvani, P. Calvani, P. Dore, P. Giura, P. Maselli, R. J. Sternlieb, S. -W. Cheong, S. Lupi, S. Lupi, S. Tajima, U. Fano, W. Bao, W. Sadowski, Y. Yagil   +28 more
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A shock tube study of reactions of NCO with O and NO using NCO laser absorption

Symposium (International) on Combustion, 1992
The absorption coefficient of NCO at 440.4790 nm (vac) was determined using a cw ring dye laser and shock-heated HNCO/N2O/Ar mixtures at temperatures and pressures ranging from 2180 K to 3070 K and 0.9 to 1.1 atmospheres, respectively. The source of NCO in these experiments was the reaction O+HNCO→OH+NCO (2a) where the O-atoms were produced by the ...
John D. Mertens, Anthony J. Dean, Ronald K. Hanson, Craig T. Bowman   +3 more
openaire   +1 more source

Stability Control of the DC/DC Converter in DC Microgrids Considering Negative Damping and Parameter Uncertainties

Energies
To address the issue of negative damping instability easily induced by DC/DC converters under constant power load (CPL) in DC microgrids and to enhance the control robustness of the system under uncertainties such as parameter perturbations, this paper ...
Hao Deng, Wusong Wen, Yingchao Zhang, Sheng Long, Liping Jin   +4 more
doaj   +1 more source

Design approach for a microprocessor-based GPS time transfer receiver [PDF]

, 1982
The design concept and characteristics of a self-contained microprocessor-based Global Positioning System time transfer receiver is described. A prototype of this unit is currently in the test phase. It employs two-bit digital baseband correlation rather
Ould, P. C., Vanwechel, R. J.
core   +1 more source

Polaronic optical absorption in electron-doped and hole-doped cuprates

, 1995
Polaronic features similar to those previously observed in the photoinduced spectra of cuprates have been detected in the reflectivity spectra of chemically doped parent compounds of high-critical-temperature superconductors, both $n$-type and $p$-type ...
A. Alexandrov, A. Bianconi, A. J. Pal, A. Paolone, A. S. Alexandrov, A. V. Bazhenov, B. K. Chakraverty, C. H. Chen, C. M. Foster, C. P. Flynn, C. Taliani, D. Emin, D. Mihailovic̀, D. Mihailovic̀, E. T. Heyen, G. A. Thomas, G. A. Thomas, G. A. Thomas, H. G. Reik, H. G. Reik, J. Orenstein, J. P. Falck, J. P. Falck, J. Ranninger, K. Kamarás, K. Yonemitsu, K. Yonemitsu, M. Arai, M. Capizzi, M. Capizzi, M. K. Crawford, N. Pyka, N. Pyka, P. Calvani, P. Calvani, P. Calvani, P. Maselli, P. Roy, Q. Huang, R. A. Hughes, S. J. L. Billinge, S. L. Cooper, S. Lupi, S. Lupi, S. Robaszkiewicz, S. Skanthakumar, S. Uchida, T. Holstein, T. Timusk, T. Timusk, Y. H. Kim, Y. H. Kim   +51 more
core   +1 more source