Results 51 to 60 of about 21,650,361 (340)

Editorial: Geospace Observation of Natural Hazards [PDF]

open access: yes, 2022
This collection of technical papers aims to bring recent data from many sources into the study of natural hazards. They represent a multi-instrumental approach using both ground observations: Global Navigation Satellite System (GNSS); and Low Earth ...
Hattori, Katsumi   +3 more
core   +1 more source

The molecular genetics of RASopathies: An update on novel disease genes and new disorders

open access: yesAmerican Journal of Medical Genetics Part C: Seminars in Medical Genetics, Volume 190, Issue 4, Page 425-439, December 2022., 2022
Abstract Enhanced signaling through RAS and the mitogen‐associated protein kinase (MAPK) cascade underlies the RASopathies, a family of clinically related disorders affecting development and growth. In RASopathies, increased RAS‐MAPK signaling can result from the upregulated activity of various RAS GTPases, enhanced function of proteins positively ...
Marco Tartaglia   +2 more
wiley   +1 more source

Application of XML technologies to telemetry Data management in test equipment for scientific Satellite missions

open access: yesData Science Journal, 2006
The development of a space mission requires the implementation of several Test Equipments which simulate data flows for a specific payload. This paper describes a project involving the adoption o XML-related technologies in the management of those data ...
Enrico Franceschi   +4 more
doaj   +1 more source

Comparison of different machine learning approaches for tropospheric profiling based on COSMIC-2 data [PDF]

open access: yesEarth, Planets and Space, 2021
AbstractPrecise and reliable information on the tropospheric temperature and water vapor profiles play a key role in weather and climate studies. Among the sensors supporting the observations of the troposphere, one can distinguish the Global Navigation Satellite System Radio Occultation (RO) technique, which provides accurate and high-quality ...
openaire   +2 more sources

The surface density of Extremely Red Objects in high-z quasar fields [PDF]

open access: yes, 2003
We report on a study of the surface density of Extremely Red Objects (EROs) in the fields of 13 radio-loud quasars at 1.8 < z < 3.0 covering a total area of 61.7 sqr arcmin.
Barthel   +19 more
core   +2 more sources

X-ray Emission Processes in Extragalactic Jets, Lobes and Hot Spots [PDF]

open access: yes, 2003
This paper is a brief review of the processes responsible for X-ray emission from radio jets, lobes and hot spots. Possible photons in inverse Compton scattering models include the radio synchrotron radiation itself (i.e.
Andrew S. Wilson   +25 more
core   +2 more sources

Optimal Estimation Inversion of Ionospheric Electron Density from GNSS-POD Limb Measurements: Part I-Algorithm and Morphology [PDF]

open access: yes, 2023
GNSS-LEO radio links from Precise Orbital Determination (POD) and Radio Occultation (RO) antennas have been used increasingly in characterizing the global 3D distribution and variability of ionospheric electron density (Ne).
Emmons, Daniel J.   +5 more
core   +2 more sources

On the Nature of the Energy-dependent Morphology of the Composite Multi-TeV Gamma-Ray Source J1702-204

open access: yesThe Astrophysical Journal, 2023
HESS J1702-420 is a multi-TeV gamma-ray source with an unusual energy-dependent morphology. The recent H.E.S.S. observations suggest that the emission is well described by a combination of the point-like HESS J1702-420A (dominating at highest energies ...
Felix Aharonian   +2 more
doaj   +1 more source

Vacuum Fluctuations of a massless spin-1/2 field around multiple cosmic strings [PDF]

open access: yes, 1997
We study the interaction of a massless quantized spinor field with the gravitational filed of N parallel static cosmic strings by using a perturbative approach.
A N Aliev   +17 more
core   +2 more sources

On the lithium abundance of the visual binary components ξ Boo A (G8V) and ξ Boo B (K5V)

open access: yesAstronomische Nachrichten, Volume 343, Issue 9-10, November-December 2022., 2022
Abstract A spectroscopic investigation of the lithium resonance doublet in ξ Boo A and ξ Boo B in terms of both abundance and isotopic ratio is presented. We obtained new R = 130,000 spectra with a signal‐to‐noise ratio (S/N) per pixel of up to 3200 using the 11.8 m LBT and PEPSI.
Klaus G. Strassmeier, Matthias Steffen
wiley   +1 more source

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