Results 131 to 140 of about 182,899 (301)

Fast Tissue Clearing and Volume Imaging Techniques for Anatomy

Microscopy Research and Technique, EarlyView.
Tissue clearing and volume imaging techniques have revolutionized our ability to visualize large biological samples, but they face obstacles related to speed, tissue preservation, complexity, and the need for fluorescence labels that make them difficult to implement in anatomy and preclinical research.
Clément Ricard, Doriane Hazart, Brigitte Delhomme, Marwa Moulzir, Irina Rakotoson, Martin Oheim   +5 more
wiley   +1 more source

Evolved Massive Stars at Low Metallicity. VII. The Lower Mass Limit of the Red Supergiant Population in the Large Magellanic Cloud

The Astrophysical Journal
The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention.
Ming Yang, Bo Zhang, Biwei Jiang, Jian Gao, Yi Ren, Shu Wang, Man I Lam, Hao Tian, Changqing Luo, Bingqiu Chen, Jing Wen   +10 more
doaj   +1 more source

Small-amplitude Red Giants Elucidate the Nature of the Tip of the Red Giant Branch as a Standard Candle

The Astrophysical Journal Letters
Abstract The tip of the red giant branch (TRGB) is an important standard candle for determining luminosity distances. Although several 105 small-amplitude red giant stars (SARGs) have been discovered, variability was previously considered irrelevant for the TRGB as a standard candle.
Richard I. Anderson, Nolan W. Koblischke, Laurent Eyer   +2 more
openaire   +3 more sources

Probing the core structure and evolution of red giants using gravity-dominated mixed modes observed with Kepler

, 2012
We report for the first time a parametric fit to the pattern of the \ell = 1 mixed modes in red giants, which is a powerful tool to identify gravity-dominated mixed modes.
Aizenman, B. Mosser, Baudin, Baudin, Beck, Beck, Bedding, Bedding, Borucki, Brassard, Brown, C. Barban, C. J. Burke, Campante, Carrier, Chaplin, Chaplin, Christensen-Dalsgaard, D. Stello, De Ridder, Deheuvels, Deheuvels, di Mauro, Dupret, Dziembowski, Dziembowski, E. Michel, García, Gilliland, Hekker, Hekker, Huber, J. De Ridder, J. P. Marques, Jenkins, Jiang, K. Belkacem, Kallinger, Koch, Ledoux, M. C. Stumpe, M. J. Goupil, Mathur, Mathur, Miglio, Morel, Mosser, Mosser, Mosser, Mosser, Mosser, Mosser, P. G. Beck, Pablo, R. A. García, R. Samadi, S. Hekker, Shibahashi, T. Barclay, T. Kallinger, T. R. Bedding, Tassoul, Verner, White, White, Y. Elsworth   +65 more
core   +2 more sources

Femtosecond Laser‐Driven Fabrication of a Polymeric Lab‐on‐a‐Chip for Efficient Size‐Based Particle Sorting in a Spiral Microchannel

Macromolecular Materials and Engineering, EarlyView.
Femtosecond laser 3D micromachining enables the fabrication of spiral microfluidic devices in polymethylmethacrylate with a trapezoidal cross‐section. The process relies on scanning speed as the main control parameter, ensuring high precision and scalability.
Stefania Caragnano, Isabella Petruzzellis, Angeles Ivon Rodriguez Villarreal, Jasmina Casals Terre, Antonio Ancona, Roberto Osellame, Rebeca Martínez Vázquez, Annalisa Volpe   +7 more
wiley   +1 more source

Photospheric Helium Abundance in Cool Giants: A Comprehensive Study

The Astrophysical Journal
High-resolution optical spectra of 16 red giants, two early asymptotic giant branch (AGB) stars, and two supergiants, having no/minimal - to super-lithium (Li)-rich abundances, are analyzed to investigate the helium (He)-enhancement. The spectra of eight
B. P. Hema, Gajendra Pandey
doaj   +1 more source

Expert Perspective: Hematologic Malignancies and Vasculitis

Arthritis &Rheumatology, EarlyView.
Michelle L. Robinette, Hetty E. Carraway
wiley   +1 more source

Degradation strategies for structural characterization of insoluble synthetic polymers by mass spectrometry

Mass Spectrometry Reviews, EarlyView.
Abstract With the advent of soft ionization techniques such as electrospray (ESI) and matrix‐assisted laser desorption/ionization (MALDI) to produce intact gas‐phase ions from nonvolatile macromolecules, mass spectrometry has become an essential technique in the field of polymeric materials.
Thierry N. J. Fouquet, Robert B. Cody, Laurence Charles   +2 more
wiley   +1 more source

Color–Magnitude Diagram of NGC 205 and Its RR Lyrae Variables

The Astronomical Journal
We present the deepest color–magnitude diagram (CMD) for NGC 205 in the F606W (≈ V ) and F814W (≈ I ) filters. Our archival Hubble Space Telescope/Advanced Camera for Surveys field is centered ∼3 $\mathop{.}\limits^{{\rm{^{\prime} }}}$ 8 northwest of the
Ata Sarajedini
doaj   +1 more source

Rotation in sdB stars as revealed by stellar oscillations

Open Astronomy, 2018
An interesting opportunity offered by the detection of stellar oscillations is the possibility to infer the internal rotation rate of a star through the so-called rotational splittings. Such seismic measurements remained rather scarce for hot B subdwarf (
Charpinet Stephane, Giammichele Noemi, Zong Weikai, Van Grootel Valérie, Brassard Pierre, Fontaine Gilles   +5 more
doaj   +1 more source