Results 241 to 250 of about 924,604 (294)
Mechanics and Dynamics of Orbital Drilling Operations
International Journal of Machine Tools and Manufacture, 2018 This paper presents a general and unified model which predicts tool – workpiece engagement, chip geometry, cutting forces, chatter stability and hole surface errors simultaneously.
Yusuf Altıntaş
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Mechanisms of Development of Orbital Fractures: A Review
Ophthalmic Plastic & Reconstructive Surgery, 2023Purpose: The purpose of this study is to review the mechanisms in the development of orbital fractures. Methods: This is a comprehensive literature review that summarizes the mechanisms of developing orbital fractures. Results: There are
Shinjiro, Kono +2 more
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The Mathematics Teacher, 1959
A timely article for mathematics classes in the high school.
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A timely article for mathematics classes in the high school.
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2021
We introduce relative orbital mechanics concepts in the context of orbital rendezvous and present a derivation of the general dynamic equations of relative motion. A linearization of the equations of motion in the LVLH frame that is valid for circular and elliptical orbits is presented, as well as the derivation of a homogeneous solution, known as the ...
Afonso Botelho +3 more
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We introduce relative orbital mechanics concepts in the context of orbital rendezvous and present a derivation of the general dynamic equations of relative motion. A linearization of the equations of motion in the LVLH frame that is valid for circular and elliptical orbits is presented, as well as the derivation of a homogeneous solution, known as the ...
Afonso Botelho +3 more
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An investigation into the mechanism of orbital blowout fractures
British Journal of Plastic Surgery, 1999For over a century, since the first description of an orbital 'blowout' fracture, there has been debate and confusion regarding the mechanism of production of these fractures. An orbital blowout fracture throughout this paper refers to fractures exhibiting displacement of the orbital floor or walls without an associated fracture of the orbital rim ...
N, Waterhouse +3 more
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2019
Until the seventeenth century, it was believed that orbits could only be circular. But in 1601, German astronomer Johannes Kepler acquired the planetary positional data of Tycho Brahe, who had recently died. The data was the most accurate of its time and spanned 15 years.
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Until the seventeenth century, it was believed that orbits could only be circular. But in 1601, German astronomer Johannes Kepler acquired the planetary positional data of Tycho Brahe, who had recently died. The data was the most accurate of its time and spanned 15 years.
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Ocular kinematics, vergence, and orbital mechanics
Strabismus, 2003Important aspects of ocular kinematics relate to the geometric configuration of extraocular muscles (EOMs). The orbital layer of each rectus EOM inserts on a connective tissue ring called a pulley that deflects the EOM path. Global layer fibers of each EOM pass through the pulley to insert on the sclera.
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Orbital and Celestial Mechanics
1968Analysis of entry dynamics was discussed in Chapter 2. It is the purpose of this chapter to discuss basic equations governing the flight mechanics before entry into a planetary atmosphere. When a vehicle approaches a planet in the absence of air, its orbital trajectory may be in the form of an ellipse when its speed is less than \(\sqrt {2gr,}\)*, a ...
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Quantum mechanical Earth: where orbitals become orbits
European Journal of Physics, 2012Macroscopic objects, although quantum mechanical by nature, conform to Newtonian mechanics under normal observation. According to the quantum mechanical correspondence principle, quantum behavior is indistinguishable from classical behavior in the limit of very large quantum numbers.
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