نتایج جستجو برای: reference orbit
تعداد نتایج: 311189 فیلتر نتایج به سال:
Quantum chemical calculations have been carried out to investigate the thermochemistry of BrHg• forming bonds with atmospherically abundant radicals Y• (Y = NO2, HO2, ClO, BrO, or IO). The coupled cluster method with single and double excitations (CCSD), combining with relativistic effective core potentials, is used to determine the equilibrium geometries and harmonic vibrational frequencies of...
purpose: to present the success of novel method for management of conjunctival orbital inclusion cysts following enucleation after using trichloroacetic acid injection technique. methods: a 20% tca solution was injected to treat 6 cases of orbital conjuctival cyst in anophthalmic socket. results: all the patients were treated successfully. the follow-up interval was 1-7 years. no recurrence or ...
abstract background involvement of lacrimal apparatus by non hodgkin lymphoma as a first manifestation is extremely rare and only three cases have been reported in children. the purpose of this report is to determine the clinical characteristic of patient with primary involvement of lacrimal apparatus with lymphoma. case presentation a 7-year-old girl with history of tearing, gradually progress...
Let be a differentiable action of a Lie group on a differentiable manifold and consider the orbit space with the quotient topology. Dimension of is called the cohomogeneity of the action of on . If is a differentiable manifold of cohomogeneity one under the action of a compact and connected Lie group, then the orbit space is homeomorphic to one of the spaces , , or . In this paper we suppo...
the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...
The Spectro-Radiometric Calibration Assembly (SRCA) provides on-orbit spectral calibration of the MODerate resolution Imaging Spectroradiometer (MODIS) reflected solar bands and this paper describes how it is accomplished. The SRCA has two adjacent exit slits: 1) Main slit and 2) Calibration slit. The output from the main slit is measured by a reference silicon photo-diode (SiPD) and then passe...
The first break-through on this conjecture was obtained by C. Viterbo, [19], showing that compact energy surfaces in R2n of contact-type have periodic orbits. Extending Gromov’s theory of pseudoholomorphic curves, [3], to symplectized contact manifolds, H. Hofer, [4], related the Weinstein conjecture to the existence of certain pseudoholomorphic curves. He showed that in dimension three the Wei...
This paper presents the design and performance of Evolved Acceleration Guidance Logic for Entry (EAGLE), an algorithm intended for future space transportation vehicles. The most distinguishing feature of EAGLE is its ability to plan a three-dimensional trajectory and thereby handle large crossrange entries. EAGLE consists of two integrated components: a trajectory planner and a tracking law. Th...
Particle‘s acceleration in static homogeneous gravitational field is cancelled by any reference frame of the same accelerating direction and the same accelerating rate. The frame is commonly called the freely-falling one. The present paper shows that the acceleration is also cancelled by a spatial curvilinear coordinate system. The coordinate system is simply a spatial square-root coordinate re...
Context. Most of the Galactic center (GC) gas moves in nearly circular orbits in a nuclear ring (hereafter Galactic center ring, GCR). This is the case of cloud complexes such as Sgr A or Sgr B, where the gas is dense, warm and exhibits a rich molecular chemistry. The origin of these properties is thought to be some kind of shock, in particular due to the large scale dynamics of the Galaxy. In ...
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