Results 21 to 30 of about 109,132 (281)

Bifurcations of periodic orbits and uniform approximations. [PDF]

open access: yes, 1997
We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase space.
Schomerus, Henning, Sieber, Martin
core   +4 more sources

Orbital Lymphoma Masquerading as Orbital Cellulitis [PDF]

open access: yesCase Reports in Ophthalmological Medicine, 2021
Background. Orbital lymphomas are primarily non-Hodgkin type and can originate from the eyelids, extraocular muscles, soft tissue orbital adnexa, conjunctiva, or lacrimal glands. Orbital malignancies often represent a diagnostic dilemma for clinicians given their varying and atypical presentations. Objective.
B. D. Chaurasiya   +5 more
openaire   +3 more sources

Orbits [PDF]

open access: yesSymposium - International Astronomical Union, 1987
Orbits that respect at least three isolating integrals of motion have very special structures in phase space. The main characteristics of this structure are reviewed, and the concrete examples that are provided by orbits in Stäckel potentials, are discussed.
openaire   +2 more sources

Changes in Orbital Volume following Reconstruction with Alloplastic Materials in Patients with Orbital Trauma [PDF]

open access: yesJournal of Dentistry
Background: Internal orbital reconstruction is a commonly performed procedure in management of zygomaticomaxillary complex (ZMC) fractures; however, it is not indicated in all cases.
Mohammadsaleh Khaghaninejad   +3 more
doaj   +1 more source

Actinomycosis of the Orbit [PDF]

open access: yesOphthalmic Plastic & Reconstructive Surgery, 1992
Actinomycosis is a very rare cause of orbital abscess usually attributable to direct spread from adjacent structures. A case of actinomycosis of the orbit is presented, which was treated as orbital pseudotumour for 3 months before progression of signs and symptoms, despite high dose steroids, led to the diagnosis being reconsidered.
Sullivan, TJ, Aylward, GW, Wright, JE
openaire   +5 more sources

Observational data and orbits of the asteroids discovered at the Molėtai Observatory in 2010–2012

open access: yesOpen Astronomy, 2017
This paper is devoted to the discovery of asteroids at the Molėtai Astronomical Observatory (MAO) in 2010- 2012 together with the orbital analysis of two dynamically interesting Near Earth Objects (NEOs) discovered at the MAO, namely 2006 SF77 and 2010 ...
Włodarczyk Ireneusz   +2 more
doaj   +1 more source

A Note on Graphs with Prescribed Orbit Structure

open access: yesEntropy, 2019
This paper presents a proof of the existence of connected, undirected graphs with prescribed orbit structure, giving an explicit construction procedure for these graphs. Trees with prescribed orbit structure are also investigated.
Abbe Mowshowitz   +2 more
doaj   +1 more source

Checking the possibility of determining the relative orbits of stars rotating around the center body of the Galaxy

open access: yesOpen Astronomy, 2022
The results of observations of selected stars orbiting the central body of our Galaxy, which, according to the latest data, has a mass of about 4 million of solar mass, are considered.
Shakht Natalia A.   +2 more
doaj   +1 more source

The dynamical environment of the primary in the triple asteroid (45) Eugenia

open access: yesOpen Astronomy, 2020
We investigated the dynamical behavior in the potential of the primary in the triple asteroid (45) Eugenia with the calculation of the full gravitational potential caused by its 3D irregular shape.
Jiang Min, Ma Qingtian
doaj   +1 more source

Satellite Requirements for Observation of Close Proximity Celestial Bodies

open access: yesEngineering Proceedings, 2022
Celestial bodies of our solar system remain as a major unexplored and unexploited reserve of natural resources available to humans. Furthermore, those constitute a valuable source of information about the origins and evolution of the solar system and an ...
Juan Misael Gongora-Torres   +4 more
doaj   +1 more source

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