Results 31 to 40 of about 162,417 (306)

Collision Orbits for Small Mass Ratio in the Restricted Three Body Problem [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1988
The existence of the j-type collision periodic orbit is examined on the condition of mass ratio 0.9878449 and Jacobian constant 2.9 ¡­3.4. Using the Birckhoff's regularization method and the 5th order Runge-Kutta variable step-sized numerical integration
Jung-Hyun Jo   +3 more
doaj  

Contact geometry of the restricted three‐body problem [PDF]

open access: yesCommunications on Pure and Applied Mathematics, 2011
AbstractWe show that the planar circular restricted three‐body problem is of restricted contact type for all energies below the first critical value (action of the first Lagrange point) and for energies slightly above it. This opens up the possibility of using the technology of contact topology to understand this particular dynamical system.
Albers, Peter   +3 more
openaire   +3 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Stability of the Sitnikov's circular restricted three body problem when the primaries are oblate spheroid

open access: yesBibechana, 2014
The Sitnikov's problem is a special case of restricted three body problem if the primaries are of equal masses (m1 = m2 = 1/2) moving in circular orbits under Newtonian force of attraction and the third body of mass m3 moves along the line perpendicular
RR Thapa
doaj   +3 more sources

MITF maintains genome stability in nonmelanocyte lineages

open access: yesMolecular Oncology, EarlyView.
MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir   +13 more
wiley   +1 more source

General Relativistic Effect on Sitnikov Three-Body Problem: Restricted Case

open access: yesAstronomy
We investigate the effect of general relativity on the Sitnikov problem. The Sitnikov problem is one of the simplest three-body problems, in which the two primary bodies (a binary system) have equal mass m and orbit their barycenter, while the third body
Hideyoshi Arakida
doaj   +1 more source

The vanishing twist in the restricted three-body problem [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 2014
This paper demonstrates the existence of twistless tori and the associated reconnection bifurcations and meandering curves in the planar circular restricted three-body problem. Near the Lagrangian equilibrium $\mathcal{L}_4$ a twistless torus is created near the tripling bifurcation of the short period family.
Holger R. Dullin, Joachim Worthington
openaire   +3 more sources

The skills required for transition to university and study in biological sciences: A student perspective

open access: yesFEBS Open Bio, EarlyView.
Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley   +1 more source

The collinear equilibrium points in the restricted three body problem with triaxial primaries

open access: yesOpen Physics, 2018
The perturbed restricted three body problem has been reviewed. The mass of the primaries are assumed as triaxial. The locations of the collinear points have been computed. Series forms of these locations are obtained as new analytical results.
Alamri Sultan Z.   +2 more
doaj   +1 more source

Geometric Analysis of Sun-Assisted Lunar Transfer Trajectories in the Planar Bicircular Four-Body Model

open access: yesApplied Sciences, 2023
This research presents a geometric analysis of Sun-assisted low-energy lunar transfers and several convenient tools that enable the systematic trajectory design in the framework of the planar bicircular restricted four-body problem.
Anastasia Tselousova   +3 more
doaj   +1 more source

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