Results 51 to 60 of about 197,201 (284)

Light Elements in the Universe

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Due to their production sites, as well as to how they are processed and destroyed in stars, the light elements are excellent tools to investigate a number of crucial issues in modern astrophysics: from stellar structure and non-standard processes at work
Sofia Randich, Laura Magrini
doaj   +1 more source

Metric completions, the Heine-Borel property, and approachability

open access: yesOpen Mathematics, 2020
We show that the metric universal cover of a plane with a puncture yields an example of a nonstandard hull properly containing the metric completion of a metric space.
Kanovei Vladimir   +2 more
doaj   +1 more source

Galaxy Zoo: Bars in Disk Galaxies

open access: yes, 2010
We present first results from Galaxy Zoo 2, the second phase of the highly successful Galaxy Zoo project (www.galaxyzoo.org).
Masters, Karen L.   +10 more
openaire   +5 more sources

Near‐Infrared Imaging of H2O2 in Plants With Nanosensors Under Environmentally Changing Conditions

open access: yesAdvanced Materials, EarlyView.
This paper reports a ratiometric nanosensor enabling robust, multivariate detection of stress signals (H2O2) in plants, with high resistance to light fluctuations and mechanical disturbances. Single‐walled carbon nanotubes serve as the sensor, Egyptian Blue nanosheets serve as a stable reference, and plant autofluorescence serves as a label‐free ...
Jiaqi Li   +8 more
wiley   +1 more source

DARK MATTER EQUILIBRIA IN GALAXIES AND GALAXY SYSTEMS [PDF]

open access: yesThe Astrophysical Journal, 2009
[abridged] In the dark matter (DM) halos embedding galaxies and galaxy systems the `entropy' K = σ^2 / ρ^{2/3} (a quantity that combines the radial velocity dispersion σwith the density ρ) is found from intensive N-body simulations to follow a powerlaw run K ~ r^α throughout the halos' bulk, with αaround 1.25.
Lapi, A., Cavaliere, A.
openaire   +3 more sources

The clustering of galaxies in hierarchical galaxy formation models [PDF]

open access: yes, 2010
Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core  

Training material for Galaxy 101 tutorial

open access: yes, 2020
The data provided here are part of a Galaxy tutorial "Galaxy 101". The files contain BED-formatted 1) coding exons on chromosome 22 of human genome version hg38, 2) SNPs from dbSNP version 153 located in whole genes, and 3) repeats from hg38 ...
Freeberg, Mallory
core   +1 more source

Continuum Robots in Surgery: From Engineering Design to Clinical Practice

open access: yesAdvanced Robotics Research, EarlyView.
The hyper‐redundant nature of continuum robot structures enables near‐infinite degrees of freedom leading to immense potential for medical applications. This review provides a historical background of continuum robots and novel ideas shaping their progress to current structural design, sensing technology, modeling techniques, and control methods.
Griffin Smith   +6 more
wiley   +1 more source

Which Type Ia supernova observables best indicate the ages of their progenitor stars?

open access: yesAstronomy & Astrophysics
Type Ia supernova (SN Ia) observables, such as the light-curve shape and colour, are expected to contain information about the progenitor star. In this work, we explore this information, with a particular focus on the age of the SN Ia progenitor star ...
Kim Young-Lo   +5 more
doaj   +1 more source

BackofenLab/docker-galaxy-graphclust: Initial release

open access: yes, 2016
Galaxy flavor for ...
Milad Miladi   +2 more
core   +1 more source

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