Results 11 to 20 of about 3,493 (206)

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

METHODOLOGY TO IMPROVE THE ACCURACY OF DETERMINING THE POSITION OF UAVS EQUIPPED WITH SINGLE-FREQUENCY RECEIVERS FOR THE PURPOSES OF GATHERING DATA ON AVIATION OBSTACLES [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2023
Low-altitude photogrammetric studies are often applied in detection of aviation obstacles. The low altitude of the Unmanned Aerial Vehicle (UAV) flight guarantees high spatial resolution (X, Y) of the obtained data. At the same time, due to high temporal
Marta LALAK   +2 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

Analysing Time Series of Land Subsidence in the West of Tehran Province (Shahriar Plain) and its Relation to Groundwater Discharge by InSAR Technique

open access: yesجغرافیا و پایداری محیط, 2020
Land subsidence, as one of the natural and geological hazards, can be caused by human activities such as long-term discharge of groundwater and traditional irrigation farming. In the last two decades, climate change and successive droughts, unsustainable
Ramin Papi   +2 more
doaj   +1 more source

Sustainable Energy Solutions for Environmental Pollution Control [PDF]

open access: yesE3S Web of Conferences
With increased technological advancements, in today’s world, sustainable energy solutions are innovative and provide attractive encouragement to researchers, green chemists, scientists, leaders, and the student community.
Mohan Chandra   +4 more
doaj   +1 more source

Klobuchar, NeQuick G, and EGNOS Ionospheric Models for GPS/EGNOS Single-Frequency Positioning under 6–12 September 2017 Space Weather Events

open access: yesApplied Sciences, 2020
The ionosphere is one of the main factors affecting the accuracy of global navigation satellite systems (GNSS). It is a dispersive medium for radio signals, and for multi-frequency receivers, most of its effect can be removed.
Adam Ciećko, Grzegorz Grunwald
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

Application of the SBAS-DInSAR technique for deformation monitoring in Tunis City and Mornag plain

open access: yesGeomatics, Natural Hazards & Risk, 2020
The ground deformation phenomena are the result of the application of natural stress (tectonic) or anthropogenic stress (overexploitation of groundwater, embankment) on the soil. The land deformation may cause several impacts on the environment and human
Anis Chaabani, Benoit Deffontaines
doaj   +1 more source

SBA-15- and SBA-16-Functionalized Silicas as New Carriers of Niacinamide

open access: yesInternational Journal of Molecular Sciences, 2023
Amorphous silica as a food additive (E 551) is used in food materials (e.g., sweeteners, dairy products) for its anti-caking properties. The physicochemical properties of SiO2 also make it suitable to serve as a carrier of active substances in functional foods, dietary supplements, and drugs.
Agata Wawrzyńczak   +2 more
openaire   +2 more sources

Surface Deformation Analysis of the Wider Zagreb Area (Croatia) with Focus on the Kašina Fault, Investigated with Small Baseline InSAR Observations

open access: yesSensors, 2019
The wider Zagreb area is considered one of the few seismically active areas in the Republic of Croatia. During the period 1880−1906, moderate to strong seismic activity with three earthquakes magnitude M L ≥ 6 occurred on the NW-SE ...
Marin Govorčin   +2 more
doaj   +1 more source

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