Results 41 to 50 of about 451,370 (306)

Copper Stress Response of Antibiotic‐Resistant and Copper‐Tolerant Enterococcus faecium and the Antibacterial Efficacy of Functionalized Copper Surfaces

Advanced Materials Interfaces, EarlyView.
This study examines how different laser‐patterned copper and brass surfaces, including copper coatings, affect the survival of vancomycin‐resistant Enterococcus faecium. Using microscopy and genome analysis, the results show that copper tolerance varies between strains and can increase after vancomycin exposure.
Franca Arndt, Katharina Siems, Stella Marie Timofeev, Philippe Baumann, Aisha Saddiqa Ahmed, Daniel Wyn Müller, Frank Mücklich, Aaron Haben, Ralf Kautenburger, Ronja Anton, Christoph Schaudinn, Michael Laue, Oliver Schwengers, Katharina Runzheimer, Rocío Arazo del Pino, Kyriaki Xanthopoulou, Paul G. Higgins, Stefan Leuko, Alessa Lalinka Boschert   +18 more
wiley   +1 more source

Modeling the Radial Color Profile of M31

Open Astronomy, 2003
We present a preliminary study of a fragment of the radial color profile of the spiral galaxy M 31 in terms of 2-D model accounting for internal extinction in the disk. The two stellar population disk model was assumed.
Semionov D., Stonkutė R., Vansevičius V.   +2 more
doaj   +1 more source

Bar fraction in lenticular galaxies: dependence on luminosity and environment

, 2010
We present a study of bars in lenticular galaxies based on a sample of 371 galaxies from the SDSS-DR 7 and 2MASS in optical and near-infrared bands, respectively.
Abadi, Abazajian, Aguerri, Aguerri, Aguerri, Aguerri, Aguerri, Ajit K. Kembhavi, Andersen, Athanassoula, Athanassoula, Barazza, Barazza, Barr, Barway, Barway, Bekki, Boselli, Bournaud, Bureau, Combes, De Vaucouleurs, Debattista, Debattista, Elmegreen, Erwin, Eskridge, Fukugita, Gadotti, Gadotti, Ho, Hubble, Hunt, Jogee, Knapen, Kniazev, Kormendy, Laurikainen, Lisker, Marinova, Marinova, McIntosh, Mendez-Abreu, Menendez-Delmestre, Nair, Nilson, Pfenniger, Prieto, Regan, Sakamoto, Sellwood, Sheth, Sheth, Sudhanshu Barway, Tago, Thompson, Van Den Bergh, Weinzirl, Whyte, Yogesh Wadadekar   +59 more
core   +1 more source

Dynamic Chiral Plasmonic Systems‐Based on Spiropyran Derivatives and Gold Nanorods

Advanced Materials Interfaces, EarlyView.
Soft chiral plasmonic nanocomposites are prepared by embedding gold nanorods into spiropyran‐based supramolecular gels. The system self‐assembles into helical structures, enabling plasmonic circular dichroism. When illuminated with UV light spiropyran–merocyanine isomerization occurs, inducing reversible nanoscale reorganization and modulation of the ...
Ewelina Tomczyk, Maciej Bagiński, Dorota Szepke, Wiktor Lewandowski, Michał Wójcik   +4 more
wiley   +1 more source

What Does Clustering Tell Us About the Buildup of the Red Sequence?

, 2009
We analyze the clustering of red and blue galaxies from four samples spanning a redshift range of 0 ...
Abbas, Andrew R. Wetzel, Bell, Berlind, Berlind, Blanton, Blanton, Brown, Coil, Conroy, Conroy, Driver, Dunkley, Hamilton, Hansen, Hopkins, Hopkins, Jannuzi, Jeremy L. Tinker, Kaiser, Kang, Kang, Kochanek, Koester, Kravtsov, Kriek, Kriek, Labbé, Lin, Maller, Maller, Marchesini, Marín, McCracken, Moster, Nagai, Negroponte, Noeske, Papovich, Quadri, Quadri, Scoccimarro, Somerville, Strateva, Tinker, Tinker, Tinker, Tinker, Tinker, Tinker, Tinker, White, White, Williams, Willmer, Yang, Zehavi, Zhao, Zheng, Zheng, Zheng, Zheng   +61 more
core   +2 more sources

Synergistic Microcrack Engineering and Auxetic Metamaterials for Enhanced Sensitivity in Stretchable Strain Sensors

Advanced Materials Technologies, EarlyView.
A highly sensitive crack‐based piezoresistive strain sensor is developed using a biaxially pre‐stretched multi‐walled carbon nanotubes/Ecoflex composite and integrated with auxetic metamaterials. Biaxial pre‐stretching improves the sensitivity by 56% compared to the uniaxially pre‐stretched strain sensor.
Jaewon Cho, Dong Hwi Kim, Yong Jun Choi, Miso Kim   +3 more
wiley   +1 more source

The Connection between Star-Forming Galaxies, AGN Host Galaxies and Early-Type Galaxies in the SDSS

, 2007
We present a study of the connection between star-forming galaxies, AGN host galaxies, and normal early-type galaxies in the Sloan Digital Sky Survey (SDSS).
Busarello G., Changbom Park, Groves B., Ho Seong Hwang, Joon Hyeop Lee, Jorgensen I., Kewley L. J., Myung Gyoon Lee, Taehyun Kim, Yun-Young Choi   +9 more
core   +1 more source

Controlled Air Gap Formation between W and TiO2 Films via Sub‐Surface TiO2 Atomic Layer Etching

Advanced Materials Technologies, EarlyView.
Delivering SiH4 and WF6 to a lined array of TiO2 films produces a thin film of tungsten while simultaneously, the underlying TiO2 is removed. When the W‐coated TiO2 structure is exposed to further etching cycles after deposition, TiO2 etching continues vertically and laterally, creating a self‐supported W structure and a vacant air gap.
Hannah R. M. Margavio, Jimmy Nguyen, Man Hou Vong, Nicholas M. Carroll, Ishwar Singh, Noel Arellano, Gregory N. Parsons   +6 more
wiley   +1 more source

The Host Galaxy Fluxes of Active Galaxy Nuclei Are Generally Overestimated by the Flux Variation Gradient Method

Universe
In terms of the variable nature of normal active galaxy nuclei (AGN) and luminous quasars, a so-called flux variation gradient (FVG) method has been widely utilized to estimate the underlying non-variable host galaxy fluxes.
Minxuan Cai, Zhen Wan, Zhenyi Cai, Lulu Fan, Junxian Wang   +4 more
doaj   +1 more source

High Redshift Quasars, Emission Lines and ‘Cloudy’

Open Astronomy, 2011
I describe some of the outstanding “big picture” questions in quasar research and how the development of the plasma simulation code Cloudy is being guided to answer them.
Ferland Gary J.
doaj   +1 more source