Results 1 to 10 of about 3,303 (163)

Accuracy verification and evaluation of small baseline subset (SBAS) interferometric synthetic aperture radar (InSAR) for monitoring mining subsidence

open access: yesEuropean Journal of Remote Sensing, 2021
This study investigated the role of the number of differentialinterferograms and coherent threshold values on the accuracy of SBAS InSAR (small baseline subset interferometric synthetic aperture radar) results for specific applications in Jiyang Coal ...
Qiuxiang Tao   +5 more
doaj   +2 more sources

Microbial transformation of secondary bile acids: roles in gut ecology and autoimmune diseases [PDF]

open access: yesFrontiers in Immunology
Secondary bile acids (SBAs) attracted interest due to their regulatory functions in gut microbial ecology and immune responses. These intricate microbial transformations decisively shape the biochemical properties of SBAs.
Lulu Ren   +8 more
doaj   +2 more sources

Research on surface deformation law of closed mines based on SBAS-InSAR

open access: yesGong-kuang zidonghua, 2021
After the mine is closed, the coal and rock mass undergoes weathering degradation and strength reduction under the action of various factors such as stress, groundwater and oxygen.
YU Hao   +3 more
doaj   +1 more source

EXAMINATION OF DIFFERENT MODELS OF TROPOSPHERE DELAYS IN SBAS POSITIONING IN AERIAL NAVIGATION [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2023
This paper presents the results of a study on the use of different tropospheric correction models in SBAS positioning for air navigation. The paper, in particular, determines the influence of the Saastamoinen troposphere and RTCA-MOPS models on the ...
Kamil KRASUSKI   +1 more
doaj   +1 more source

تحلیل وضعیت فرونشست محدوده شهری همدان با استفاده از تصاویر راداری و ماهواره‌ای [PDF]

open access: yesجغرافیا و مخاطرات محیطی, 2023
مخاطره فرونشست در طی سال­های اخیر، شهرهای زیادی ازجمله شهرهای مناطق خشک و نیمه­خشک ایران را با چالش جدی مواجه کرده است. شهر همدان ازجمله شهرهایی است که در معرض این مخاطره قرار دارد و به همین دلیل در این پژوهش به ارزیابی میزان فرونشست در محدوده این شهر ...
حمید گنجائیان   +3 more
doaj   +1 more source

The GPS / EGNOS Positioning Quality in APV-1 and LPV-200 flight procedures

open access: yesCommunications, 2021
Accuracy, integrity, continuity and availability are the basic quality parameters extremely important in satellite navigation. The article presents results of research using the European Geostationary Navigation Overlay Service (EGNOS) that belongs to ...
Grzegorz Grunwald   +3 more
doaj   +1 more source

Evolution of Near-Shore Outwash Fans and Permafrost Spreading Under Their Surface: A Case Study from Svalbard

open access: yesRemote Sensing, 2020
The article presents geomorphological analysis results for two outwash fans (sandurs), Elveflya and Nottingham, in the marginal zone of the Werenskiold Glacier in the south-west part of the Spitsbergen.
Marek Kasprzak   +3 more
doaj   +1 more source

Chemical quenching of positronium in OMC/SBA-15, OMC@SBA-15 and CuO@SBA-15 catalysts [PDF]

open access: yesActa Physica Sinica, 2022
Owing to highly ordered two-dimensional hexagonal structure, large surface area, variable pore size, high thermal stability and especially the electron delocalization energy determined by its frame structure, SBA-15 catalysts have received more and more researchers’ attention.
Chong-Yang Li, Bin Zhao, Jun-Wei Zhang
openaire   +1 more source

Integration of DInSAR and SBAS Techniques to Determine Mining-Related Deformations Using Sentinel-1 Data: The Case Study of Rydułtowy Mine in Poland

open access: yesRemote Sensing, 2020
Underground coal exploitation often results in land-surface subsidence, the rate of which depends on geological characteristics, the mechanical properties of the rocks, and the applied extraction technology.
Kamila Pawluszek-Filipiak   +1 more
doaj   +1 more source

Evaluating the performance of ChatGPT-4 on the United Kingdom Medical Licensing Assessment

open access: yesFrontiers in Medicine, 2023
IntroductionRecent developments in artificial intelligence large language models (LLMs), such as ChatGPT, have allowed for the understanding and generation of human-like text.
U Hin Lai   +7 more
doaj   +1 more source

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