Results 21 to 30 of about 6,089,716 (332)

Structure formation with decaying neutrinos [PDF]

open access: yesPhysical Review D, 1995
We consider the effects of a massive, unstable neutrino on the evolution of large--scale structure and anisotropies in the cosmic microwave background. Comparison with large--scale structure data allows us to rule out a wide range of masses and lifetimes for such neutrinos.
White, M., Gelmini, G., Silk, J.
openaire   +3 more sources

Preparation of Onion Epidermal Cell Walls for Imaging by Atomic Force Microscopy (AFM)

open access: yesBio-Protocol, 2017
The growing plant cell wall is comprised of long, thin cellulose microfibrils embedded in a hydrated matrix of polysaccharides and glycoproteins. These components are typically constructed in layers (lamellae) on the inner surface of the cell wall, i.e.,
Tian Zhang, Daniel Cosgrove
doaj   +1 more source

Primordial Fluctuations From Quantum Gravity

open access: yesFrontiers in Astronomy and Space Sciences, 2021
We study the fluctuations and the correlations between spatial regions generated in the primordial quantum gravitational era of the universe. We point out that these can be computed using the Lorentzian dynamics defined by the Loop Quantum Gravity ...
Francesco Gozzini, Francesca Vidotto
doaj   +1 more source

Stress effects in structure formation [PDF]

open access: yes, 1999
Residual velocity dispersion in cold dark matter induces stresses which lead to effects that are absent in the idealized dust model. A previous Newtonian analysis showed how this approach can provide a theoretical foundation for the phenomenological ...
A.D. Challinor   +26 more
core   +2 more sources

Acetyl Bromide Soluble Lignin (ABSL) Assay for Total Lignin Quantification from Plant Biomass

open access: yesBio-Protocol, 2017
Lignin is the second most abundant biopolymer on Earth, providing plants with mechanical support in secondary cell walls and defense against abiotic and biotic stresses.
William Barnes, Charles Anderson
doaj   +1 more source

Machine learning cosmological structure formation [PDF]

open access: yes, 2018
We train a machine learning algorithm to learn cosmological structure formation from N-body simulations. The algorithm infers the relationship between the initial conditions and the final dark matter haloes, without the need to introduce approximate halo
Lochner, Michelle   +3 more
core   +2 more sources

Structure formation in binary colloids [PDF]

open access: yes, 2003
A theoretical study of the structure formation observed very recently [Phys. Rev. Lett. 90, 128303 (2003)] in binary colloids is presented. In our model solely the dipole-dipole interaction of the particles is considered, electrohidrodynamic effects are ...
A. Ghazali   +19 more
core   +1 more source

Cosmological acceleration from structure formation [PDF]

open access: yes, 2006
We discuss the Buchert equations, which describe the average expansion of an inhomogeneous dust universe. In the limit of small perturbations, they reduce to the Friedmann-Robertson-Walker equations.
Padmanabhan T.   +3 more
core   +3 more sources

SPMHD simulations of Structure Formation [PDF]

open access: yes, 2018
The intracluster medium of galaxy clusters is permeated by {\mu}G magnetic fields. Observations with current and future facilities have the potential to illuminate the role of these magnetic fields play in the astrophysical processes of galaxy clusters ...
Barnes, David J.   +3 more
core   +2 more sources

The role of thermoactive binders in the structuring of composites [PDF]

open access: yesPolímeros
Thermoactive binders are the most widely used form of polymer matrix materials in modern composites. In the production of composites, thermoactive binders are the basis of the matrix structure formation process with different properties.
Meiyu Shao   +4 more
doaj   +1 more source

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