Results 101 to 110 of about 42,575 (298)

Ultrasound‐Triggered Gelation for Restoring Biomechanical Properties of Degenerated Functional Spinal Units

open access: yesAdvanced Healthcare Materials, EarlyView.
This study introduces an innovative approach to treating intervertebral disc degeneration using ultrasound‐triggered in situ hydrogel formation. Proof‐of‐concept experiments using optimized biomaterial and ultrasound parameters demonstrate partial restoration of biomechanical function and successful integration into degenerated disc tissue, offering a ...
Veerle A. Brans   +11 more
wiley   +1 more source

Living Materials Approach for In Situ Bio‐Polymers Production Using Bacillus Paralicheniformis in Microneedles

open access: yesAdvanced Healthcare Materials, EarlyView.
Dissolvable microneedle (MN) device containing Bacillus paralicheniformis. The polymeric matrix encapsulates and protects the bacteria, preserving their viability while enabling in situ production and release of γ‐polyglutamic acid. The bacteria are delivered into the skin via 500 µm‐long microneedles, and remain detectable on the skin 24 h post ...
Caroline Hali Alperovitz   +3 more
wiley   +1 more source

Mapping the Cosmic-Ray Ionization Rate in the Local Galaxy with

open access: yesThe Astrophysical Journal
Chemistry in diffuse molecular clouds relies primarily on rapid ion-molecule reactions. Formation of the initial ions, H ^+ and H ${}_{2}^{+}$ , is dominated by cosmic-ray ionization of H and H _2 , making the cosmic-ray ionization rate (denoted ζ (X ...
Nick Indriolo   +8 more
doaj   +1 more source

Diffusion and sedimentation of dust in molecular clouds

open access: yesThe Astrophysical Journal, 1978
A general theorem is derived for the diffusion of grains and the formation of dust concentrations in molecular clouds. The clouds are of arbitrary configuration and are supported by thermal pressure gradients, turbulence motions, and magnetic fields. The time scale for drainage of dust into pools of enhanced concentration is typically approx.10/sup 8 ...
openaire   +1 more source

Emergent Motility of Self‐Organized Particle‐Giant Unilamellar Vesicle Assembly

open access: yesAdvanced Materials, EarlyView.
Giant unilamellar vesicles (GUVs), when combined with silica particles under alternating electric fields, spontaneously self‐assemble into motile structures. Asymmetric particle decoration induces fluid flows that propel the assemblies, enabling persistent motion and reversible control.
Selcan Karaz   +5 more
wiley   +1 more source

Atomic and Molecular Carbon as a Tracer of Translucent Clouds

open access: yes, 2009
Using archival, high-resolution far-ultraviolet HST/STIS spectra of 34 Galactic O and B stars, we measure CI column densities and compare them with measurements from the literature of CO and H_2 with regard to understanding the presence of translucent ...
Bakes   +26 more
core   +1 more source

Crystal Engineering of Reticular Materials for Gas‐ and Liquid‐Phase Hydrocarbon Separation

open access: yesAdvanced Materials, EarlyView.
Crystal engineering enables systematic study of structure/function relationships as exemplified by pore engineering of reticular sorbents, including porous coordination networks and covalent organic frameworks. This review assesses such studies applied across the full scope of industrially relevant hydrocarbon separations to provide insight into how ...
Xia Li   +2 more
wiley   +1 more source

Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies

open access: yesAdvances in Astronomy, 2014
We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars.
Mercedes Mollá
doaj   +1 more source

Model calculations for diffuse molecular clouds [PDF]

open access: yes
A steady state isobaric cloud model is developed. The pressure, thermal, electrical, and chemical balance equations are solved simultaneously with a simple one dimensional approximation to the equation of radiative transfer appropriate to diffuse clouds.
Glassgold, A. E., Langer, W. D.
core   +1 more source

Diffuse Gamma-ray Observations of the Orion Molecular Clouds

open access: yes, 2009
2009 Fermi Symposium, eConf Proceedings ...
Okumura, Akira, Kamae, Tune
openaire   +2 more sources

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