Results 81 to 90 of about 6,130,358 (229)

Electrical Resistivity Tomography for the 2D and 3D Investigation of Pingos and Permafrost Mounds in Northern Canada's Mountain and Coastland Areas

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Pingos and related permafrost mounds are widespread periglacial landforms in Arctic environments that are ice‐rich on the one hand and contain taliks on the other, making them vulnerable to climate change. So far, the interior, geophysical characteristics, and distribution of ground ice within these dome‐ or cone‐shaped features have not been ...
Tim Wiegand, Julius Kunz, Christof Kneisel   +2 more
wiley   +1 more source

Within‐tree spatial heterogeneity of sap flow velocities and wood properties and its effect on the uncertainty of tree level sap flux estimates

PLANTS, PEOPLE, PLANET, EarlyView.
As forests are important for biodiversity and recreation and provide vital resources globally, it is essential that their health can be accurately monitored, for example, by using sap flow probes to measure tree water uptake. We investigated whether sap flow measurements might differ at various locations within the same tree due to variation in wood ...
Stefan Seeger, Markus Weiler, Martin Maier   +2 more
wiley   +1 more source

Using Electrical Resistivity Tomography (ERT) as a tool in geotechnical investigation of the substrate of a highway

Studia Quaternaria, 2014
Abstract Geological and geotechnical engineering field tests, like structure drillings and dynamic (DPL, DPSH) or static probing (CPT), are considered for a fundamental source of information about soil and water environments. Since Eurocode 7 has been introduced, it has become more common to use also dilatometers (DMT) or pressure meters (PMT ...
Maciej Maślakowski, Sebastian Kowalczyk, Radosław Mieszkowski, Kazimierz Józefiak   +3 more
openaire   +1 more source

Identification of leachate infiltration and its flow pathway in landfill by means of electrical resistivity tomography (ERT)

Environmental Monitoring and Assessment, 2020
Sanitary landfills are a well-planned engineering work for final disposal of municipal solid waste in order to minimize the environmental impacts in soil and groundwater. Therefore, several control systems are installed such as liners and leachate and biogas collectors.
Lívia Portes Innocenti Helene, César Augusto Moreira, Renata Cristina Bovi   +2 more
openaire   +3 more sources

Carbon dots in electrochemiluminescence: Mechanisms, interface engineering, and bioanalytical applications

Responsive Materials, EarlyView.
Carbon dots are emerging as versatile electrochemiluminescent nanomaterials whose structure, surface states, and interfacial design jointly determine ECL pathways and performance. This review highlights how mechanistic understanding and materials engineering enable programmable CD‐ECL systems for bioanalysis, imaging, and future intelligent analytical ...
Yuhan Zhao, Zixuan Chen, Jun‐Jie Zhu
wiley   +1 more source

Dissolution-enlarged fractures imaging using electrical resistivity tomography (ERT) [PDF]

, 2017
In recent years the electrical imaging techniques have been largely applied to geotechnical and environmental investigations. These techniques have proven to be the best geophysical methods for site investigations in karst terrain, particularly when the ...
Siami-Irdemoosa, Elnaz
core   +1 more source

Joint seismic/electrical effective medium modelling of hydrate-bearing marine sediments and an application to the Vancouver Island margin [PDF]

, 2008
Remote determination of the hydrate content of marine sediments remains a challenging problem.In the absence of boreholes, the most commonly used approach involves the measurement of Pwavevelocities from seismic experiments.
Best, A.I., Ellis, M.H., Best, Angus I., Minshull, T.A., Sinha, M.C.   +4 more
core   +1 more source

Integrated Ground-Penetrating Radar and Electrical Resistivity Tomography for Concrete and Masonry Assessment: A Critical Review and Research Agenda

NDT - Journal of Non-Destructive Testing
Ground-penetrating radar (GPR) and electrical resistivity tomography (ERT) provide complementary, but non-unique, observations of concrete and masonry conditions.
Muftah Abu Obaida, Philippe Sentenac
doaj   +1 more source

AI‐Powered GPR Characterization of Peatland Underground Cavity Induced by Smoldering Wildfire: A Laboratory Proof‐of‐Concept

Safety Science and Technology, EarlyView.
We present an AI‐assisted ground‐penetrating radar framework to noninvasively detect and quantify smoldering wildfire‐induced subsurface cavities in peatlands. A ResNet model accurately predicts cavity geometry from GPR images, enabling improved assessment of underground fire damage and hazards.
Zifan Zhang, Zilong Wang, Yichao Zhang, Yanghan Su, Shaorun Lin, Xinyan Huang   +5 more
wiley   +1 more source

PRECARIZED AGEING‐IN‐PERIFERIA: Low‐Income Older Adults in a Transforming Neighbourhood

International Journal of Urban and Regional Research, EarlyView.
Abstract In this article we investigate how intersecting forms of precarity shape the everyday practices of ageing‐in‐place developed by low‐income older adults in Via Milano, a historically segregated yet rapidly transforming neighbourhood in Brescia, northern Italy. We draw on qualitative and ethnographic research to examine how diverse urban changes—
Marco Alioni, Barbara Badiani
wiley   +1 more source