Results 11 to 20 of about 87,920 (266)

Revisiting the 2PN Pericenter Precession in View of Possible Future Measurements

open access: yesUniverse, 2020
At the second post-Newtonian (2PN) order, the secular pericenter precession ω ˙ 2 PN of either a full two-body system made of well-detached non-rotating monopole masses of comparable size and a restricted two-body system composed of a point
Lorenzo Iorio
doaj   +1 more source

The Lingering Anomalous Secular Increase of the Eccentricity of the Orbit of the Moon: Further Attempts of Explanations of Cosmological Origin

open access: yesGalaxies, 2014
New analyses of extended data records collected with the Lunar Laser Ranging (LLR) technique performed with improved tidal models were not able to resolve the issue of the anomalous rate e ˙ of the eccentricity e of the orbit of the Moon, which is ...
Lorenzo Iorio
doaj   +1 more source

Using a Machine Learning Method to Predict the Penetration Depth of a Gravity Corer

open access: yesApplied Sciences, 2022
The study of penetration depth of gravity piston samplers has an essential impact on sampling efficiency and instrument safety. This study focuses on predicting penetration depth based on the characteristic parameters of the sampled seafloor sediments ...
Xing Du   +4 more
doaj   +1 more source

On Testing Frame-Dragging with LAGEOS and a Recently Announced Geodetic Satellite

open access: yesUniverse, 2018
Recently, Ciufolini and coworkers announced the forthcoming launch of a new cannonball geodetic satellite in 2019. It should be injected in an essentially circular path with the same semimajor axis a of LAGEOS (Laser Geodynamics Satellite), in orbit ...
Lorenzo Iorio
doaj   +1 more source

Experimentally Created Magnetic Force in Microbiological Space and On-Earth Studies: Perspectives and Restrictions

open access: yesCells, 2023
Magnetic force and gravity are two fundamental forces affecting all living organisms, including bacteria. On Earth, experimentally created magnetic force can be used to counterbalance gravity and place living organisms in conditions of magnetic ...
Svetlana A. Ermolaeva   +4 more
doaj   +1 more source

Granular flow experiment using artificial gravity generator at International Space Station

open access: yesnpj Microgravity, 2023
Studying the gravity-dependent characteristics of regolith, fine-grained granular media covering extra-terrestrial bodies is essential for the reliable design and analysis of landers and rovers for space exploration.
S. Ozaki   +12 more
doaj   +1 more source

A Post-Newtonian Gravitomagnetic Effect on the Orbital Motion of a Test Particle around Its Primary Induced by the Spin of a Distant Third Body

open access: yesUniverse, 2019
We study a general relativistic gravitomagnetic 3-body effect induced by the spin angular momentum S X of a rotating mass M X orbited at distance r X by a local gravitationally bound restricted two-body system S of size ...
Lorenzo Iorio
doaj   +1 more source

Condensation heat transfer in microgravity conditions

open access: yesnpj Microgravity, 2023
In the present paper, a thorough review of the experimental and numerical studies dealing with filmwise and dropwise condensation under microgravity is reported, covering mechanisms both inside tubes and on plain or enhanced surfaces.
Arianna Berto   +5 more
doaj   +1 more source

A HERO for General Relativity

open access: yesUniverse, 2019
HERO (Highly Eccentric Relativity Orbiter) is a space-based mission concept aimed to perform several tests of post-Newtonian gravity around the Earth with a preferably drag-free spacecraft moving along a highly elliptical path fixed in its plane ...
Lorenzo Iorio
doaj   +1 more source

Hydrodynamics and heat exchange of crystal pulling from melts. Part II: Numerical study of free convection mode [PDF]

open access: yesModern Electronic Materials, 2021
This work is a brief overview of numerical study results for hydrodynamics and convective heat exchange for the classic Czochralski technique obtained at the Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences.
Vladimir S. Berdnikov
doaj   +3 more sources

Home - About - Disclaimer - Privacy