Results 71 to 80 of about 9,161,553 (268)
Vibration and Modal Analysis of Low Earth Orbit Satellite
Shock and Vibration, 2014 This paper presents design, modeling, and analysis of satellite model used for remote sensing. A detailed study is carried out for the design and modeling of the satellite structure focusing on the factors such as the selection of material, optimization ...
Asif Israr
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A Sensitivity Study of POD Using Dual-Frequency GPS for CubeSats Data Limitation and Resources
Remote Sensing, 2020 Making use of dual-frequency (DF) global navigation satellite system (GNSS) observations and good dynamic models, the precise orbit determination (POD) for the satellites on low earth orbits has been intensively investigated in the last decades and has ...
Kan Wang +3 more
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Stable and sustainable orbital capacity solutions in Low Earth Orbit
Acta AstronauticaAbstract The significant increase in the population of satellites in Low Earth Orbit raises concerns about the orbital carrying capacity, essentially the ability of the Low Earth Orbit environment to sustain a certain number of satellites without unsustainable levels of risk due to space debris or collisions.
Giovanni Lavezzi +2 more
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Molecular Oncology, EarlyView.Drug resistance limits treatment success in a subset of lung cancers driven by ROS1 gene alterations. Using patient‐derived cells and computer simulations, we studied three key mutations and how they affect five targeted drugs. The mutations reduced drug effectiveness in different ways by altering protein structure and behavior.
Farhan Ul Haq +8 more
wiley +1 more source
AerospaceLow-thrust orbit transfer problems are central to reducing mission costs and enabling cleaner, more efficient space travel. However, they remain difficult to solve using mathematically superior indirect methods of optimization.
Jackson T. Hurley +2 more
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Molecular Oncology, EarlyView.Single‐cell DNA methylation (scDNAme) profiling maps epimutational clonal evolution, revealing mechanisms of malignancy and therapeutic resistance across diverse cancer types. By providing a high‐resolution landscape of intratumoral heterogeneity, these technologies empower precise patient stratification, guide the development of enhanced ...
Ik Soo Kim
wiley +1 more source
Low-Thrust Transfer Design of Low-Observable Geostationary Earth Orbit Satellite
International Journal of Aerospace Engineering, 2015 With radar and surface-to-air missiles posing an increasing threat to on-orbit spacecraft, low-observable satellites play an important role in low-thrust transfers.
Bing Hua, Zhujun Shao
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Low Earth Orbiting (LEO) Satellite and Orbital Decay
International Journal of Engineering and Advanced Technology, 2022 In this article we present a simple but elegant numerical calculation to study the motion of a low earth orbiting (LEO) satellite in gravitational potential and under the influence of quadratic drag force. We solve a set of coupled differential equations to calculate the instantaneous position and velocity of the satellite and calculate the change in ...
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CEACAM1 participation in breast cancer progression
Molecular Oncology, EarlyView.In invasive breast cancer (BC), CEACAM1 shifts from an apical to a uniform membranous/cytoplasmic pattern, or is lost, as tumors dedifferentiate, inversely tracking the Ki‐67 proliferative index. In MCF‐7 cells, only CEACAM1‐4L suppresses proliferation, repressing cell cycle and growth factor genes.
Mykola Lyndin +3 more
wiley +1 more source
Thermal deformation of 3U CubeSat in low Earth orbit
MATEC Web of Conferences, 2018 The impact of uneven heating on a satellite structure in low Earth orbit has been considered using the example of 3U CubeSat. The calculations showed that the thermal deformation of CubeSat structure in orbit caused a deviation between normals to ...
Gorev Vasily +3 more
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