Results 61 to 70 of about 1,782 (230)

Galaxy rotation curves in the Grumiller's modified gravity [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
12 pages, 3 figures, 4 ...
Hai-Nan Lin   +3 more
openaire   +3 more sources

C13‐Deacylase from Nocardioides albus Resp. Streptomyces sp., Catalyzing Side Chain Hydrolysis on the Taxane Core

open access: yesChemCatChem, EarlyView.
An enzyme that has been identified and characterized as capable of hydrolyzing paclitaxel (Taxol), a key anticancer drug derived from Pacific yew (Taxus brevifolia) has been identified. Molecular docking (MD) simulations map the catalytic triad and critical residues that drive substrate‐enzyme interactions. The findings indicate the catalytic potential
Jinfen Su   +3 more
wiley   +1 more source

Two-component galaxies with flat rotation curve [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
11 pages, 5 figures, accepted by ...
CIOTTI, LUCA   +2 more
openaire   +3 more sources

Gravothermal Solutions of SIDM Halos: Mapping from Constant to Velocity-dependent Cross Section

open access: yesThe Astrophysical Journal, 2023
The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a constant dark matter particle cross section.
Shengqi Yang   +6 more
doaj   +1 more source

Newtonian Fractional-Dimension Gravity and Galaxies without Dark Matter

open access: yesUniverse, 2023
We apply Newtonian fractional-dimension gravity (NFDG), an alternative gravitational model, to some notable cases of galaxies with little or no dark matter.
Gabriele U. Varieschi
doaj   +1 more source

Hydrogen peroxide ‐ responsive aminoferrocene prodrugs

open access: yesEuropean Journal of Organic Chemistry, Accepted Article.
Aminoferrocene (AF)‐based prodrugs are activated in cancer cells through reactions with H₂O₂ and other reactive oxygen species (ROS), generating electron‐rich AF’s. These, in turn, induce the production of highly toxic O2·‐ and HO·, leading to cancer cell death.
Marlies Körber   +3 more
wiley   +1 more source

Mass Distribution and Rotation Curve in the Galaxy [PDF]

open access: yes, 2013
The mass distribution in the Galaxy is determined by dynamical and photometric methods. Rotation curves are the major tool for determining the dynamical mass distribution in the Milky Way and spiral galaxies. The photometric (statistical) method utilizes luminosity profiles from optical and infrared observations, and assumes empirical values of the ...
openaire   +4 more sources

Revisiting Galactic Disk and Spiral Arms Using Open Clusters

open access: yesThe Astronomical Journal, 2023
We use the largest catalog of open clusters in the post-Gaia era to provide an observational view of the Galactic disk. By compiling physical parameters such as age, distance, and kinematic information, we investigate the spatial distribution of open ...
Yogesh C. Joshi, Sagar Malhotra
doaj   +1 more source

Vision at high latitudes: High sensitivity without specific boreal adaptations in photoreception in reindeer (Rangifer tarandus L.)

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The light climate at high latitudes, in particular the extended twilight of winter and the reduced diel variation in light level in midsummer and midwinter, potentially constrains visual function and the synchronisation of temporal organisation in polar species. In this
Nicholas J. C. Tyler   +3 more
wiley   +1 more source

Oscillating Cosmological Force Modifies Newtonian Dynamics

open access: yesGalaxies, 2020
In the Newtonian limit of general relativity a force acting on a test mass in a central gravitational field is conventionally defined by the attractive Newtonian gravity (inverse square) term plus a small repulsive cosmological force, which is ...
Igor I. Smolyaninov
doaj   +1 more source

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