Results 11 to 20 of about 4,491 (242)
A modified artificial neural network based prediction technique for tropospheric radio refractivity. [PDF]
PLoS ONE, 2018 Radio refractivity plays a significant role in the development and design of radio systems for attaining the best level of performance. Refractivity in the troposphere is one of the features affecting electromagnetic waves, and hence the communication ...
Shumaila Javeed +4 more
doaj +1 more source
Leflunomide as a potential second-line drug in the treatment of sarcoidosis
Туберкулез и болезни лёгких, 2019 Sarcoidosis is systemic granulomatosis of an unknown nature, the course of which varies from spontaneous remission to progression resulting in failure of organs and systems.
A. A. Vizel, I. Yu. Vizel
doaj +1 more source
IEEE Access, 2020 The meteorological parameters review the impact of refractivity on received signal strength for the one-fourth kilometre square area is confer for frequency 1800 to 1900 MHz.
Sayyed Shahid Hussain +5 more
doaj +1 more source
Refraction problems after refractive surgery
Survey of Ophthalmology, 1988 While refractive surgery such as radial keratotomy, epikeratophakia, and corneal relaxing incisions offer many potential benefits to patients, they can also generate optical problems such as overcorrection or undercorrection of the prior refractive error and variable vision.
Dean McGee Eye Institute, University of Oklahoma, Oklahoma City, Oklahoma, USA ( host institution ) +2 more
openaire +3 more sources
Evaluation of GNSS Radio Occultation Profiles in the Vicinity of Atmospheric Rivers
Atmosphere, 2022 Increasing the density of Global Navigation Satellite System radio occultation (RO) with commercial Smallsats and the next generation COSMIC-2 constellation is expected to improve analyses of the state of atmosphere, which is essential for numerical ...
Michael J. Murphy, Jennifer S. Haase
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Diurnal Variation of Surface Radio Refractivity over Sokoto, North-western Nigeria [PDF]
Physics Access, 2021 The knowledge of good refractivity profile is vital for proper planning of terrestrial communication links; surface refractivity profile of a station is particularly required for enhanced planning and prediction of performance of terrestrial radio links ...
Mohammed Z Doko +6 more
doaj +1 more source
Development and evaluation of airborne microwave refractometer for studies on atmospheric tropical boundary layer radiorefractive index [PDF]
Annales Geophysicae, 1994 Observations of high-resolution data on radio refractivity were obtained by the airborne microwave refractometer over the Indian sub-continent (a tropical country) from 1971 to 1988. Detailed vertical and horizontal distributions of radio refractivity
S. B. S. S. Sarma, B. M. Reddy
doaj +1 more source
High Temporal Resolution Refractivity Retrieval from Radar Phase Measurements
Remote Sensing, 2018 Knowledge of the spatial and temporal variability of near-surface water vapor is of great importance to successfully model reliable radio communications systems and forecast atmospheric phenomena such as convective initiation and boundary layer processes.
Rubén Nocelo López +1 more
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Deutsches Ärzteblatt international, 2016 All over the world, refractive errors are among the most frequently occuring treatable distur - bances of visual function. Ametropias have a prevalence of nearly 70% among adults in Germany and are thus of great epidemiologic and socio-economic relevance.In the light of their own clinical experience, the authors review pertinent articles retrieved by a
Ulrich, Schiefer +4 more
openaire +2 more sources
Long-Term Characterization of Vertical Radio Refractivity Gradients and Tropospheric Propagation Conditions over North-Central Nigeria Using ERA5 Reanalysis Data [PDF]
Physics AccessThis study presents a comprehensive long-term evaluation of vertical radio refractivity and refractivity gradients over selected locations in North-Central Nigeria.
Usman S Lami +11 more
doaj +1 more source