Results 71 to 80 of about 365,472 (267)

A Novel Milli‐Scale Magnetic Robot Exploiting Rotation for Controlled Magnetic Particles Release

Advanced Intelligent Systems, EarlyView.
Delivering magnetic particles can become a game changer in minimally invasive medicine. To cope with this challenge, a magnetically actuated milli‐scale carrier leveraging rotation to perform on‐demand tunable release of magnetic particles across multiple release events is presented.
Giordano De Angelis, Tamerlan Srymbetov, Arianna Menciassi, Veronica Iacovacci   +3 more
wiley   +1 more source

Probing Gravitational Theories with Eccentric Eclipsing Detached Binary Stars

Acta Polytechnica CTU Proceedings, 2014
In this paper, we compare the effects of different theories of gravitation on the apsidal motion of eccentric eclipsing detached binary stars. The comparison is performed by using the formalism of the post-Newtonian parametrization to calculate the ...
Leopoldo Milano, Rosario De Rosa, Mariafelicia De Laurentis, Fabio Garufi   +3 more
doaj   +1 more source

A relativistic action-at-a-distance description of gravitational interactions?

, 2012
It is shown that certain aspects of gravitation may be described using a relativistic action-at-a-distance formulation. The equations of motion of the model presented are invariant under Lorentz transformations and agree with the equations of Einstein's ...
A. D. Fokker, A. N. Whitehead, A. O. Barut, A. S. Eddington, Domingo J. Louis-Martinez, F. Hoyle, G. Longhi, G. J. Whitrow, G. N. Afanasiev, I. T. Todorov, J. L. Anderson, J. N. Goldberg, K. Schwarzschild, L. Bel, L. D. Landau, R. P. Gaida, S. Weinberg, W. De Sitter, Yu. S. Vladimirov, Yu. S. Vladimirov   +19 more
core   +1 more source

Recommending a value for the Newtonian gravitational constant [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
The primary objective of the CODATA Task Group on Fundamental Constants is ‘to periodically provide the scientific and technological communities with a self-consistent set of internationally recommended values of the basic constants and conversion factors of physics and chemistry based on all of the relevant data available at a given point in time’.
openaire   +2 more sources

Thermal Conductance and Mass Transport of Brinkman‐Type Nanofluids Across Porous Plates: A Prabhakar‐Fractional Approach

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The paper establishes an advanced computing algorithm to investigate the thermosolutal dynamics of an electrically conductive Brinkman‐type nanofluid that moves in a porous channel, and the fluid is acted on by an inclined magnetic field exerted externally.
Urwa Shehbaz, Umair Khan, MD. Shamshuddin, Nermeen Abdullah, Samia Elattar   +4 more
wiley   +1 more source

Categories and the Foundations of Classical Field Theories [PDF]

, 2015
I review some recent work on applications of category theory to questions concerning theoretical structure and theoretical equivalence of classical field theories, including Newtonian gravitation, general relativity, and Yang-Mills theories.Comment: 26 ...
Weatherall, James Owen
core   +3 more sources

Post-Einsteinian tests of linearized gravitation

, 2005
The general relativistic treatment of gravitation can be extended by preserving the geometrical nature of the theory but modifying the form of the coupling between curvature and stress tensors.
Adelberger E G Heckel B R Nelson A E, Aguirre A, Bertolami O, Bertolami O Paramos J, Coy J Fischbach E Hellings R W Talmadge C Standish E M, Damour T, Eddington A S, Fischbach E, Iess L, Jaekel M T, Jaekel M T Reynaud S, Jaekel M T Reynaud S, Landau L D, Marc-Thierry Jaekel, Nieto M M, Nordtvedt K, Reuter M, Robertson H P, Sakharov A D, Sakharov A D, Serge Reynaud, Shapiro I I, t'Hooft G, Turyshev S G, Turyshev S G Nieto M M Anderson J D, Will C M, Will C M   +26 more
core   +3 more sources

Characterization and Modeling of Industrial Phosphoric Acids' Rheological Behavior: Impact of Magnesium Monoxide on Viscosity

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the rheological behavior of industrial phosphoric acids (H3PO4) produced at the JORF–LASFAR phosphoric plant in Morocco, with P2O5 concentrations of 18%, 29%, 42%, and 54%. Rheological measurements were performed using a rotary cylinder rheometer over a shear rate range of 1–1000 s−1.
Hamza Belbsir, Abderrahim Benzaouia, Said Kounbach, Abdelghani Laamaoui, Said Laassiri, Khalil El‐Hami, Rachid Benhida   +6 more
wiley   +1 more source

Open Star Clusters and Their Asymmetrical Tidal Tails

The Astrophysical Journal
Stars that evaporate from their star cluster by the energy equipartition process end up in either a leading or a trailing tidal tail. In Newtonian gravitation and for open star clusters in the solar vicinity, the tidal threshold, or práh, for escape is ...
Pavel Kroupa, Jan Pflamm-Altenburg, Sergij Mazurenko, Wenjie Wu, Ingo Thies, Vikrant Jadhav, Tereza Jerabkova   +6 more
doaj   +1 more source

Lower Limit to the Scale of an Effective Quantum Theory of Gravitation [PDF]

, 2008
An effective quantum theory of gravitation in which gravity weakens at energies higher than ~10^-3 eV is one way to accommodate the apparent smallness of the cosmological constant. Such a theory predicts departures from the Newtonian inverse-square force
Caldwell, R. R., Grin, Daniel
core   +4 more sources