Results 41 to 50 of about 6,834 (137)

Low-frequency line temperatures of the CMB

open access: yes, 2009
Based on SU(2) Yang-Mills thermodynamics we interprete Aracde2's and the results of earlier radio-surveys on low-frequency CMB line temperatures as a phase-boundary effect.
Copi   +18 more
core   +1 more source

State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control

open access: yesAdvanced Science, Volume 12, Issue 27, July 17, 2025.
High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu   +13 more
wiley   +1 more source

Pulmonary effects of inhalation of spark-generated silver nanoparticles in Brown-Norway and Sprague-Dawley rats [PDF]

open access: yes, 2016
The increasing use of silver nanoparticles (AgNPs) in consumer products is concerning. We examined the potential toxic effects when inhaled in Brown-Norway (BN) rats with a pre-inflammatory state compared to Sprague-Dawley (SD) rats.We determined the ...
Buckley, A   +17 more
core   +1 more source

Bounds on Dark Matter annihilations from 21 cm data [PDF]

open access: yes, 2018
The observation of an absorption feature in the 21 cm spectrum at redshift $z\approx 17$ implies bounds on Dark Matter annihilations for a broad range of masses, given that significant heating of the intergalactic medium would have erased such feature ...
D'Amico, Guido   +2 more
core   +2 more sources

Spectral Distortions of the CMB as a Probe of Inflation, Recombination, Structure Formation and Particle Physics [PDF]

open access: yes, 2019
Following the pioneering observations with COBE in the early 1990s, studies of the cosmic microwave background (CMB) have focused on temperature and polarization anisotropies.
Abitbol, M. H.   +100 more
core   +1 more source

Controlled cortical impact traumatic brain injury in 3xTg-AD mice causes acute intra-axonal amyloid-β accumulation and independently accelerates the development of tau abnormalities [PDF]

open access: yes, 2011
Alzheimer\u27s disease (AD) is a neurodegenerative disorder characterized pathologically by progressive neuronal loss, extracellular plaques containing the amyloid-β (Aβ) peptides, and neurofibrillary tangles composed of hyperphosphorylated tau proteins.
Brody, David L   +3 more
core   +2 more sources

Supramolecular polymer hydrogels induced by host-guest interactions with di-[cyclobis(paraquat-p-phenylene)] cross-linkers: from molecular complexation to viscoelastic properties [PDF]

open access: yes, 2017
Supramolecular polymer networks have been designed on the basis of a -electron donor/acceptor complex: naphthalene (N)/cyclobis(paraquat-p-phenylene) (CBPQT4+=B). For this purpose, a copolymer of N,N-dimethylacrylamide P(DMA-N1), lightly decorated with 1
Belal, Khaled   +7 more
core   +2 more sources

Impact of Simulated 1/f Noise for HI Intensity Mapping Experiments [PDF]

open access: yes, 2017
Cosmology has entered an era where the experimental limitations are not due to instrumental sensitivity but instead due to inherent systematic uncertainties in the instrumentation and data analysis methods. The field of HI intensity mapping (IM) is still
Battye, Richard   +7 more
core   +2 more sources

A Dryopithecine Talus From Abocador de Can Mata (Vallès‐Penedès Basin, NE Iberian Peninsula): Morphometric Affinities and Evolutionary Implications for Hominoid Locomotion

open access: yesAmerican Journal of Biological Anthropology, Volume 186, Issue 4, April 2025.
ABSTRACT Objectives The functional interpretation of postcranial remains of Middle Miocene great apes from Europe (dryopithecines) suggests a combination of quadrupedalism and orthograde behaviors without modern analogs. We provide further insights based on an isolated dryopithecine talus (IPS85037) from the Middle Miocene (11.7 Ma) Abocador de Can ...
Oriol Monclús‐Gonzalo   +7 more
wiley   +1 more source

Transitivity of visual sameness [PDF]

open access: yes, 2020
The way in which vision represents objects as being the same despite movement and qualitative changes has been extensively investigated in contemporary psychology.
Skrzypulec, Błażej
core  

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