Results 1 to 10 of about 1,182,695 (373)

Transit navigation through Northern Sea Route from satellite data and CMIP5 simulations [PDF]

open access: goldEnvironmental Research Letters, 2017
Rapid Arctic sea ice decline over the last few decades opens new perspectives for Arctic marine navigation. Further warming in the Arctic will promote the Northern Sea Route (NSR) as an alternative to the conventional Suez or Panama Canal routes for ...
Vyacheslav C Khon   +2 more
doaj   +3 more sources

Revisiting the Transit Timing and Atmosphere Characterization of the Neptune-mass Planet HAT-P-26 b [PDF]

open access: yesThe Astronomical Journal, 2023
We present a transit-timing variation (TTV) and planetary atmosphere analysis of the Neptune-mass planet HAT-P-26 b. We present a new set of 13 transit light curves from optical ground-based observations and combine them with light curves from the Wide ...
Napaporn A-thano   +13 more
doaj   +2 more sources

Staging 18F-FDG PET/CT influences the treatment plan in melanoma patients with satellite or in-transit metastases

open access: hybridMelanoma research, 2020
Whole-body positron emission tomography/computed tomography (PET/CT) and brain magnetic resonance imaging (MRI) are commonly used to stage patients with palpable lymph node metastases from melanoma, but their role in patients with satellite and/or in ...
Lodewijka H. J. Holtkamp   +10 more
openalex   +2 more sources

The chemokine receptor CXCR4 regulates satellite cell activation, early expansion, and self-renewal, in response to skeletal muscle injury

open access: yesFrontiers in Cell and Developmental Biology, 2022
Acute skeletal muscle injury is followed by satellite cell activation, proliferation, and differentiation to replace damaged fibers with newly regenerated muscle fibers, processes that involve satellite cell interactions with various niche signals.
Ahmed S. Shams   +17 more
doaj   +2 more sources

Comparison of Results From Transit Satellite Tracking [PDF]

open access: yesAnnals of Glaciology, 1988
Large-scale motions and strain-rates over great distances on polar ice sheets are often obtained from the tracking of Transit (or doppler) satellites. The results of different processing techniques for these tracking data are compared, using some of the data collected on and near Ice Stream C.
James McDonald, Ian M. Whillans
openaire   +3 more sources

Astrosat: Forecasting satellite transits for optical astronomical observations [PDF]

open access: yesMNRAS, Volume 509, Issue 2, January 2022, Pages 1848-1853, 2021
The impact of large-scale constellations of satellites, is a concern for ground-based astronomers. In recent years there has been a significant increase in the number of satellites in Low-Earth Orbit and this trend is set to continue. The large number of satellites increases the probability that one will enter the field of view of a ground-based ...
James Osborn   +3 more
arxiv   +7 more sources

Measuring positive public transit accessibility using big transit data

open access: yesGeo-spatial Information Science, 2021
Most of the current existing accessibility measures quantify the potential of reaching desirable opportunities across space and time. Nevertheless, these potential measurements only illustrate the maximum possible accessibility a person can have, which ...
Tong Zhang, Wenyuan Zhang, Zhenxuan He
doaj   +2 more sources

Effects of ionospheric scintillation on Transit satellite measurement of total electron content

open access: bronze, 2004
Ionospheric scintillation can affect not only satellite communications but also satellite measurements of the ionosphere, such as the measurements of total electron content (TEC) made using Transit‐like signal transmissions.
Dennis L. Knepp
openalex   +2 more sources

A spindle cell squamous cell carcinoma on the cheek presenting with in-transit metastases and a satellite lesion [PDF]

open access: goldArchives of Craniofacial Surgery, 2020
Spindle cell squamous cell carcinoma (SpSCC) is a biphasic tumor composed of squamous cell epithelial and spindle cell mesenchymal components, both of which are malignant.
Eui-Tae Lee
openalex   +2 more sources

Determination of the size, mass, and density of "exomoons" from photometric transit timing variations [PDF]

open access: yes, 2007
Precise photometric measurements of the upcoming space missions allow the size, mass, and density of satellites of exoplanets to be determined. Here we present such an analysis using the photometric transit timing variation ($TTV_p$). We examined the light curve effects of both the transiting planet and its satellite.
A. Simon   +14 more
arxiv   +4 more sources

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