Results 101 to 110 of about 36,778 (291)

Chameleons with Field Dependent Couplings

, 2010
Certain scalar-tensor theories exhibit the so-called chameleon mechanism, whereby observational signatures of scalar fields are hidden by a combination of self-interactions and interactions with ambient matter. Not all scalar-tensor theories exhibit such
Carsten van de Bruck, David F. Mota, Hans A. Winther, Nelson J. Nunes, P. Binetruy, Philippe Brax   +5 more
core   +1 more source

Spread of mcr-1–Driven Colistin Resistance on Hospital Surfaces, Italy [PDF]

Emerging Infectious Diseases, 2018
Plasmid-mediated colistin resistance driven by the mcr-1 gene is of great clinical concern. Its diffusion in the hospital environment is unknown. We detected mcr-1-driven resistance in 8.3% of Enterobacteriaceae isolates from hospital surfaces in Italy, which might represent a reservoir of threatening nosocomial pathogens.
Elisabetta Caselli, Maria D’Accolti, Irene Soffritti, Micol Piffanelli, Sante Mazzacane   +4 more
openaire   +3 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

Advanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska, Leire Unanue, Itxaso Calafel, Dorleta Otaegui, Jorge L. Olmedo‐Martínez, Lourdes Irusta, Daniel Vinagre, Nora Aranburu, Nerea Casado, Ibon Odriozola, David Mecerreyes   +10 more
wiley   +1 more source

Key features of mcr-1-bearing plasmids from Escherichia coli isolated from humans and food

Antimicrobial Resistance and Infection Control, 2017
Background Mcr-1-harboring Enterobacteriaceae are reported worldwide since their first discovery in 2015. However, a limited number of studies are available that compared full-length plasmid sequences of human and animal origins.
Katrin Zurfluh, Magdalena Nüesch-Inderbinen, Jochen Klumpp, Laurent Poirel, Patrice Nordmann, Roger Stephan   +5 more
doaj   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Comparison of methods for detection of plasmid-mediated and chromosomally encoded colistin resistance in Enterobacteriaceae [PDF]

, 2017
Objectives: Because of the emergence of plasmid-mediated (mcr-1 and mcr-2 genes) and chromosomally encoded colistin resistance, reliable methods for detecting colistin resistance/susceptibility in routine laboratories are required.
Dubois, Véronique, Jayol, Aurélie, Lehours, Philippe, Nordmann, Patrice, Poirel, Laurent   +4 more
core  

Effective field theory analysis of the self-interacting chameleon

, 2010
We analyse the phenomenology of a self-interacting scalar field in the context of the chameleon scenario originally proposed by Khoury and Weltman. In the absence of self-interactions, this type of scalar field can mediate long range interactions and ...
B. Bertotti, B. Feldman, B. Ratra, D.F. Mota, D.F. Mota, G.R. Dvali, H. Dam van, Hillary Sanctuary, I. Navarro, J. Khoury, J. Khoury, M. Grana, N. Arkani-Hamed, P. Brax, P.G. Bergmann, R. Brustein, R.R. Caldwell, R.V. Wagoner, Riccardo Sturani, S. Kachru, S.S. Gubser, T. Damour, T. Damour, T. Faulkner, V.I. Zakharov, V.I. Zakharov, W.D. Goldberger, Y. Fujii   +27 more
core   +2 more sources

Antibiotic-resistant Escherichia Coli from Retail Poultry Meat with Different Antibiotic Use Claims [PDF]

, 2018
Background We sought to determine if the prevalence of antibiotic-resistant Escherichia coli differed across retail poultry products and among major production categories, including organic, “raised without antibiotics”, and conventional.
Davis, Gregg S., Grande, Heidi, Horwinski, Joseph, Hungate, Bruce A., Koch, Benjamin, Liu, Cindy M., Nordstrom, Lora, Papp, Katerina, Price, Lance B., Waits, Kara, Weaver, Brett   +10 more
core   +2 more sources

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

Advanced Materials, EarlyView.
Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger, Maximilian M. Horn, Eva Röck, Diego Rosas Villalva, Lize Bynens, Jochen Vanderspikken, Christina Kousseff, Silène Gobeil, Olivier Bardagot, Nesibe Akmanşen‐Kalayci, Sarah H. Tolbert, Iain McCulloch, Wouter Maes, Demetra Tsokkou, Natalie Banerji   +14 more
wiley   +1 more source