Results 1 to 10 of about 120,510 (265)

Quantum gravity corrections to the mean field theory of nucleons [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this paper, we analyze the correction to the mean field theory potential for a system of nucleons. It will be argued that these corrections can be obtained by deforming the Schrödinger’s equation describing a system of nucleons by a minimal length in ...
Abrar Ahmed Naqash   +4 more
doaj   +3 more sources

Propagation peculiarities of mean field massive gravity

open access: yesPhysics Letters B, 2015
Massive gravity (mGR) describes a dynamical “metric” on a fiducial, background one. We investigate fluctuations of the dynamics about mGR solutions, that is about its “mean field theory”.
S. Deser, A. Waldron, G. Zahariade
doaj   +5 more sources

Gravity inequalities and the mean temperature on a planet [PDF]

open access: yesJournal of Inequalities and Applications, 2016
In the centered surround system S ( 2 ) { P , Γ } $S^{(2)} \{P,\varGamma \}$ , we establish the following gravity inequalities: ( 1 + 5 2 π e 2 1 − e 2 ) ( 2 π | Γ | ) 2 ≤ 1 | Γ | ∮ Γ 1 ∥ A − P ∥ 2 ≤ ( 1 + 16 − π 4 π e 2 1 − e 2 ) ( 2 π | Γ | ) 2 ...
Jia Jin Wen   +3 more
doaj   +3 more sources

Quantum gravity: Meaning and measurement [PDF]

open access: yesStudies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, 2014
Comment: 24 pages; Minor content additions; fixed typos and references.
Stachel, John, Bradonjić, Kaća
openaire   +4 more sources

Accurate computation of geoid-quasigeoid separation in mountainous region – A case study in Colorado with full extension to the experimental geoid region

open access: yesJournal of Geodetic Science, 2023
The geoid-quasigeoid separation (GQS) traditionally uses the Bouguer anomalies to approximate the difference between the mean gravity and normal gravity along the plumb line. This approximation is adequate in flat and low elevation areas, but not in high
Wang Yan Ming   +6 more
doaj   +1 more source

Kelvin-Helmholtz billows and their effects on mean state during gravity wave propagation [PDF]

open access: yesAnnales Geophysicae, 2009
The Kelvin-Helmholtz (KH) billows which appear in the process of gravity wave (GW) propagation are simulated directly by using a compressible nonlinear two-dimensional gravity wave model.
X. Liu, X. Liu, J. Xu, H. Gao, G. Chen
doaj   +1 more source

Gravity inversion by means of growing bodies [PDF]

open access: yesGEOPHYSICS, 2000
This paper presents a gravity inversion method for determining the volumes of bodies with pre‐established density contrasts. The method works step‐by‐step on a prismatic partition of the subsurface volume, expanding the anomalous bodies to fit the observed gravity values in a systematic exploration of model possibilities. The process is treated in a 3-
Camacho, AG, A.G.   +2 more
openaire   +3 more sources

EFFECT OF DIFFERENT HEIGHT AND DIAMETER LEVELS THROUGHOUT THE STEM ON VESSELS DIMENTIONS AND SPECIFIC GRAVITY OF Platanus occidentalis L.TREES GROWING AT NINAVAH PLANTATION [PDF]

open access: yesMesopotamia Journal of Agriculture, 2010
Two 10 years old Platanus occidentalis L. trees growing as copies had been fallen to study the variation in vessel element dimensions and specific gravity between and within the trees . Eight discs were cut from each tree from the stump until 14.30 m.
Abulrazak R. Almalah
doaj   +1 more source

EFFECT OF DIFFERENT HEIGHT AND DIAMETER LEVELS THROUGHOUT THE STEM ON VESSELS DIMENTIONS AND SPECIFIC GRAVITY OF Platanus occidentalis L.TREES GROWING AT NINAVAH PLANTATION [PDF]

open access: yesMesopotamia Journal of Agriculture, 2009
Two 10 years old Platanus occidentalis L. trees growing as copies had been fallen to study the variation in vessel element dimensions and specific gravity between and within the trees . Eight discs were cut from each tree from the stump until 14.30 m.
Abulrazak R. Almalah
doaj   +1 more source

Parallel Multiple Methods with Adaptative Decision Making for Gravity-Aided Navigation

open access: yesJournal of Marine Science and Engineering, 2023
Gravity-aided navigation is an effective navigation method for underwater vehicles. However, the distribution of the gravity field may affect the measurement errors of gravity anomalies and the precision of gravity-aided navigation.
Shuaipeng Gao, Tijing Cai
doaj   +1 more source

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