Results 11 to 20 of about 2,722 (144)

Mathematic Modelling and Numerical Analysis for a Novel Inner-Type Nutation Magnetic Drive

open access: yesEnergies, 2020
This paper presents an inner-type of magnetic gears for non-contact driving, based on the nutation gearing principle. An improved three-dimensional analytical model, based on the magnetic vector potential of rectangular permanent magnets, via the ...
Meiyan Lou, Ligang Yao
doaj   +1 more source

The Celestial Frame and the Weighting of the Celestial Pole Offsets in the Computation of VLBI-Based Corrections for the Main Lunisolar Nutation Terms

open access: yesSensors, 2021
Very long baseline interferometry (VLBI) is the only technique in space geodesy that can determine directly the celestial pole offsets (CPO). In this paper, we make use of the CPO derived from global VLBI solutions to estimate empirical corrections to ...
Víctor Puente, Marta Folgueira
doaj   +1 more source

Red Light and Glucose Enhance Cytokinin-Mediated Bud Initial Formation in Physcomitrium patens

open access: yesPlants, 2022
Growth and development of Physcomitrium patens is endogenously regulated by phytohormones such as auxin and cytokinin. Auxin induces the transition of chloronema to caulonema.
Durga Prasad Biswal   +1 more
doaj   +1 more source

About the Free and Forced Nutation: The Daily Nutation [PDF]

open access: yesAmerican Journal of Astronomy and Astrophysics, 2021
To explain the nutation phenomenon, Euler chose a geocentric frame of coordinates to present his dynamical equations. In accordance with his formulas, the nutation is caused by a momentum relative to the Earth's center, due to certain external forces. Further, Poinsot presented a special case of the Euler's equations, when any momentum of those certain
openaire   +1 more source

Mars nutation resonance due to Free Inner Core Nutation [PDF]

open access: yesJournal of Geophysical Research: Planets, 2003
The rotational normal modes of the planet Mars are computed using a numerical approach. We deduce the associated resonances in the nutations induced by the external gravitational forcing from the Sun, Phobos, and Deimos. In particular, the influence of a possible solid inner core inside a liquid core is investigated.
P. Defraigne   +3 more
openaire   +1 more source

Long-period nutational-precessional motions of the instantaneous Earth rotation pole

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2020
The influence of the rotational regime on real long-period nutational-precessional motions of the instantaneous pole of the Earth’s rotation is considered. The solar magnetospheric (through changes in the angular velocity of rotation) mechanism of action
V.Yu. Belashov   +2 more
doaj   +1 more source

Biomechanical analysis of sacroiliac joint motion following oblique-pulling manipulation with or without pubic symphysis injury

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Background: Oblique-pulling manipulation has been widely applied in treating sacroiliac joint (SIJ) dysfunction. However, little is known about the biomechanical mechanism of the manipulation.
Jing Li   +12 more
doaj   +1 more source

Basic Earth's Parameters as estimated from VLBI observations

open access: yesGeodesy and Geodynamics, 2017
The global Very Long Baseline Interferometry observation for measuring the Earth rotation's parameters was launched around 1970s. Since then the precision of the measurements is continuously improving by taking into account various instrumental and ...
Ping Zhu   +3 more
doaj   +1 more source

Nutation and Reference Frame [PDF]

open access: yesHighlights of Astronomy, 1995
The reference frames are of fundamental importance in all kinds of the precession and nutation studies involving the theory, the coordinate transformation and the observations. The aim of this paper is to review all the frames used in such studies and to lead to a better consistency between them in order that theory and reductions of observations be ...
openaire   +1 more source

Shapiro like steps reveals molecular nanomagnets’ spin dynamics

open access: yesAIP Advances, 2015
We present an accurate way to detect spin dynamics of a nutating molecular nanomagnet by inserting it in a tunnel Josephson junction and studying the current voltage (I-V) characteristic.
Babak Abdollahipour   +2 more
doaj   +1 more source

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