Results 31 to 40 of about 516,720 (274)

On the effect of the degeneracy between w_0 and w_a [PDF]

open access: yes, 2013
The dynamics of scalar fields as dark energy is well approximated by some general relations between the equation of state parameter $w(z)$ and the fraction energy density $\Omega_\phi$.
Gao, Qing, Gong, Yungui
core   +2 more sources

Thermopower modulation clarification of the intrinsic effective mass in a transparent oxide semiconductor, BaSnO3 [PDF]

open access: yes, 2017
Although there are so many reports on the carrier effective mass (m*) of a transparent oxide semiconductor BaSnO3, it is almost impossible to know the intrinsic m* value because the reported m* values are scattered from 0.06 to 3.7 m0.
Feng, Bin   +4 more
core   +2 more sources

Brane-bulk energy exchange : a model with the present universe as a global attractor

open access: yes, 2005
The role of brane-bulk energy exchange and of an induced gravity term on a single braneworld of negative tension and vanishing effective cosmological constant is studied.
A. Anisimov   +36 more
core   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

open access: yesFEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young   +7 more
wiley   +1 more source

Lymph node ratio predicts efficacy of postoperative radiation therapy in nonmetastatic Merkel cell carcinoma: A population‐based analysis

open access: yesCancer Medicine, 2022
Background After radical resection of a nonmetastatic Merkel cell carcinoma (M0 MCC), postoperative radiation therapy (RT) is recommended as it improves survival. However, the role of RT in specific subgroups of M0 MCC is unclear.
Giuseppe Lamberti   +9 more
doaj   +1 more source

Reconstructing the properties of dark energy from recent observations

open access: yes, 2007
We explore the properties of dark energy from recent observational data, including the Gold Sne Ia, the baryonic acoustic oscillation peak from SDSS, the CMB shift parameter from WMAP3, the X-ray gas mass fraction in cluster and the Hubble parameter ...
Alam U   +28 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

An Analysis of Factors Influencing Green Supply Chain Drivers in the Indian Real Estate Sector Using the ISM-DEMATEL Approach

open access: yesFoundations of Management
In response to compelling environmental and societal imperatives, the real estate sector is increasingly compelled to adopt environmentally sustainable practices, prompting a significant “green” shift.
Koul Pawan, Roy Ghatak Ranjit
doaj   +1 more source

Incorporating Change-Point Detection Updates of Frequency-Magnitude Distributions Within the Taiwan Earthquake Catalog

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2011
Threshold magnitude (M0) is an important factor in determining the magnitude of completeness in calculating seismic b values. Seismic b values can assist in determining the likelihood of earthquake events; therefore, seismic b values should be re ...
Kuei-Pao Chen   +3 more
doaj   +1 more source

Looking for K\"ahler- Einstein Structure on Cartan Spaces with Berwald connection [PDF]

open access: yes, 2010
A Cartan manifold is a smooth manifold M whose slit cotangent bundle T*M0 is endowed with a regular Hamiltonian K which is positively homogeneous of degree 2 in momenta.
Ahmadi, A., Peyghan, E., Tayebi, A.
core  

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