Results 51 to 60 of about 24,589 (267)

An Edible H2O2 Biosensor for Gastrointestinal Metabolites and Peroxidase Enzyme Quantification

Advanced Healthcare Materials, EarlyView.
We present an edible biosensor for gastric fluid analysis that integrates a caffeic acid–horseradish peroxidase redox system into an edible electrolyte‐gated transistor. The device enables rapid, low‐volume detection of H2O2 and, with minimal modification, metabolites and enzyme activity in simulated gastrointestinal conditions.
Valerio Francesco Annese, Elena Feltri, Pietro Rossi, Valerio Galli, Cristiano Bortolotti, João Paulo Vita Damasceno, Ivan K. Ilic, Dario Natali, Alessandro Luzio, Adrica Kyndiah, Mario Caironi   +10 more
wiley   +1 more source

Know Your Neighborhood: A Detailed Model Atmosphere Analysis of Nearby White Dwarfs

, 2012
We present improved atmospheric parameters of nearby white dwarfs lying within 20 pc of the Sun. The aim of the current study is to obtain the best statistical model of the least-biased sample of the white dwarf population.
Bergeron, Bergeron, Bergeron, Bergeron, Bessell, Bohlin, Cohen, Dufour, Dufour, Dufour, Falcon, Farihi, Farihi, Gatewood, Gianninas, Gianninas, Gianninas, Harris, Holberg, Holberg, Holberg, Holberg, Kawka, Kawka, Kilic, Kilic, Kilic, Kowalski, Leggett, Liebert, Liebert, Limoges, Lépine, Lépine, Lépine, Malo, McCook, Monet, N. Giammichele, P. Bergeron, P. Dufour, Perryman, Press, Provencal, Putney, Reimers, Salim, Schmidt, Scholz, Sion, Subasavage, Subasavage, Subasavage, Tremblay, Tremblay, Tremblay, Tremblay, van Altena, Vennes, Vennes, Vornanen, Zuckerman, Zuckerman   +62 more
core   +1 more source

X-ray and optical observations of the ultrashort period dwarf nova SW Ursae Majoris - A likely new DQ Herculis star

The Astrophysical Journal, 1986
Time-resolved X-ray and optical photometric and optical spectroscopic observations of the ultrashort period cataclysmic variable SW UMa are reported. The spectroscopic observations reveal the presence of an s-wave component which is almost in phase with the extreme line wings and presumably the white dwarf. This very unusual phasing in conjunction with
A. W. Shafter, P. Szkody, J. R. Thorstensen   +2 more
openaire   +1 more source

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

The 100 pc White Dwarf Sample in the SDSS Footprint. II. A New Look at the Spectral Evolution of White Dwarfs

The Astrophysical Journal
We increase the spectroscopic completeness of the 100 pc white dwarf sample in the Sloan Digital Sky Survey footprint with 840 additional spectra. Our spectroscopy is 86% complete for white dwarfs hotter than T _eff  = 5000 K, where H α remains visible ...
Mukremin Kilic, Pierre Bergeron, Simon Blouin, Adam Moss, Warren R. Brown, Antoine Bédard, Gracyn Jewett, Marcel A. Agüeros   +7 more
doaj   +1 more source

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

A Census of White Dwarfs Within 40 Parsecs of the Sun

, 2010
Our aim is to compile a catalog of white dwarfs within 40 parsecs of the Sun, in which newly discovered objects would significantly increase the completeness of the current census.
Bergeron, P., Lepine, Sebastien, Limoges, M. -M.   +2 more
core   +1 more source

DQ Analysis of Fractional-Slot Machines With Star-Delta Concentrated Winding

IEEE Access
This paper presents a novel method for addressing the challenge of dq-transformation in fractional-slot machines with star-delta connected concentrated windings. These machines have no neutral point, preventing direct measurement of mutual inductance between phases.
Isaac Rudden, Peng Wang 0159, Henghui Li, Guang-Jin Li, Zi-Qiang Zhu, Alexander Duke, Richard Clark   +6 more
openaire   +2 more sources

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

Hot DQ White Dwarfs: Something Different

, 2008
We present a detailed analysis of all the known Hot DQ white dwarfs in the Fourth Data Release of the Sloan Digital Sky Survey (SDSS) recently found to have carbon dominated atmospheres.
G. D. Schmidt, G. Fontaine, Herwig F., James Liebert, Koester D., Kurucz R. L., N. Behara, P. Dufour, Peach G., Werner K., Werner K.   +10 more
core   +3 more sources