Results 81 to 90 of about 72,602 (336)

The Cuttlebone Blueprint for Multifunctional Metamaterials: Design Taxonomy, Functional Decoupling, and Future Horizons

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley   +1 more source

Nature of BD + 17° 4708 [PDF]

open access: yes, 1970
Oke, Greenstein, and Gunn (1966) called the GO star BD + 17° 4708 a field horizontal-branch star. They determined its effective temperature to be 6000° K, and its surface gravity as log g = 3.0. In his study of field horizontal-branch stars, Newell (1969)
Cohen, Judith G., Greenstein, Jesse L.
core  

The Variable Stars and Blue Horizontal Branch of the Metal-Rich Globular Cluster NGC 6441 [PDF]

open access: yes, 1998
We present time-series VI photometry of the metal-rich ([Fe/H] = -0.53) globular cluster NGC 6441. Our color-magnitude diagram shows that the extended blue horizontal branch seen in Hubble Space Telescope data exists in the outermost reaches of the ...
Andrew C. Layden   +8 more
core   +2 more sources

Co‐Electrospinning Extracellular Matrix with Polycaprolactone Enables a Modular Approach to Balance Bioactivity and Mechanics of a Multifunctional Bone Wrap

open access: yesAdvanced Healthcare Materials, EarlyView.
The incorporation of nondigested ECM and synthetic polymers into a co‐electrospinning system enables the decoupling of bioactivity and mechanical properties within a single wrap. This technique is used to develop a multifunctional bone wrap that achieves augmented membrane durability, sustained infection control, and enhanced vascularity for use in ...
Sarah Jones   +14 more
wiley   +1 more source

X-ray properties of RR Lyrae and Cepheid variables from eROSITA

open access: yesAstronomy & Astrophysics
We present a search for X-ray counterparts to RR Lyrae and Cepheid variables using data from the first eROSITA all-sky survey. We identify seven RR Lyrae and eight Cepheid variables with positional matches to X-ray sources.
Iłkiewicz Krystian, Netzel Henryka
doaj   +1 more source

The Chemical Compositions of Non-Variable Red and Blue Field Horizontal Branch Stars

open access: yes, 2010
We present a new detailed abundance study of field red horizontal branch (RHB) and blue horizontal branch (BHB) non-variable stars. High resolution and high S/N echelle spectra of 11 RHB and 12 BHB were obtained with the McDonald 2.7 m telescope, and the
Adelman   +53 more
core   +1 more source

Tunable Bioresorbable Scaffolds With Marine Sulfated Polysaccharides for Small‐Caliber Vascular Grafts: A Multi‐Layered Strategy Combining Electrospinning and 4‐Axis Printing

open access: yesAdvanced Healthcare Materials, EarlyView.
A multilayered small‐caliber vascular scaffold combining electrospinning and 4‐axis printing is developed and biofunctionalized with marine sulfated polysaccharides from Holothuria tubulosa. The resulting construct exhibits enhanced hemocompatibility, tunable mechanical properties, and supports endothelial and smooth muscle cell adhesion and ...
Gabriele Obino   +9 more
wiley   +1 more source

A Comparative Study between M30 and M92: M92 is a Merger Remnant with a Large Helium Enhancement

open access: yesThe Astrophysical Journal
We perform a comparative study of the ex situ second-parameter pair globular clusters (GCs) M30 and M92, having similar metallicities but different horizontal branch morphologies.
Jae-Woo Lee
doaj   +1 more source

Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1999
We report the discovery of 17 new RR Lyrae variables in the central region (r≤1’) of the globular cluster M53. There candidates were identified by using the Welch & Stetson (1993) technique and confirmed by checking individual light curves in both B and ...
Sangmo Sohn   +4 more
doaj  

The Horizontal Branch of NGC 1851: Constraints from its RR Lyrae Variables

open access: yes, 2012
We use the pulsational properties of the RR Lyrae variables in the globular cluster NGC 1851 to obtain detailed constraints of the various sub-stellar populations present along its horizontal branch.
Amigo, Pia   +7 more
core   +1 more source

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