Results 41 to 50 of about 369 (185)

Demonstration of a High‐Resolution Passive Profiler for Characterizing the Distribution of PFAS in Groundwater: A Comparison of Methods in the Field

Groundwater Monitoring &Remediation, EarlyView.
Abstract Characterizing the concentration and mass flux spatial distributions at sites with complex hydrogeologic conditions is critical to evaluate the fate and transport of contaminants, as well as to design effective remediation programs. PFAS (per‐ and polyfluoroalkyl substances)‐contaminated sites are even more complex due to the large number of ...
Morgan Eldridge, Jessica LaFond, Micaela Vavra, Graig Lavorgna, David Lippincott, Paul Hatzinger, Jennifer Guelfo, Todd Anderson, W. Andrew Jackson   +8 more
wiley   +1 more source

The use of thermal imaging to assess heat generation during dental implant bed preparation in the presence of a surgical guide with an incorporated coolant channel

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluates the thermodynamic benefits of including an irrigation fluid channel in the design of surgical guides used for dental implant site drilling. Materials and Methods Two types of guides suitable for hosting artificial bone plates that mimic the mechanical properties of human alveolar bone were designed: a classical ...
Robert‐Angelo Tuce, Vasile Pupăzan, Monica Neagu, Stelian Arjoca, Adrian Neagu   +4 more
wiley   +1 more source

Influence of Rotation Speed and Air Pressure on the Down the Hole Drilling Velocity for Borehole Heat Exchanger Installation

Energies, 2020
The relation between rotation speed, air pressure and the velocity of air-rotary drilling using the down the hole method is determined in an empirical manner.
Tomasz Sliwa, Kinga Jarosz, Marc A. Rosen, Anna Sojczyńska, Aneta Sapińska-Śliwa, Andrzej Gonet, Karolina Fąfera, Tomasz Kowalski, Martyna Ciepielowska   +8 more
doaj   +1 more source

A Review on Heat Transfer Enhancement of Borehole Heat Exchanger

Energy Procedia, 2016
Abstract The heat transfer enhancements of borehole heat exchanger (BHE) have been intensively studied which strongly influences the performance of ground-coupled heat pump (GCHP) systems. In this paper, some typical heat transfer enhancement methods of BHE are reviewed based on BHE designs, grout materials and the influence of artificial groundwater
Zhao, Jun, Li, Yang, Wang, Junyao
openaire   +1 more source

Reassessing Alpine Permafrost Thermal State by Accounting for Ground Ice

Earth's Future, Volume 14, Issue 8, August 2026.
Abstract Permafrost thermal state, representing the stored “cold energy” in the ground, is crucial for assessing permafrost changes. However, the conventional metric, mean annual ground temperature (MAGT), has inherent limitations because it overlooks the thermodynamic contribution of ground ice.
Hailong Ji, Zhuotong Nan, Yuhong Chen, Lihua Chen, Shuping Zhao   +4 more
wiley   +1 more source

Optimization of the utilization of deep borehole heat exchangers

Geothermal Energy, 2020
Deep-borehole heat exchangers (DBHE) are generally coaxial pipes installed in deep boreholes and has become an alternative approach to utilize geothermal energy.
Sheng Pan, Yanlong Kong, Chaofan Chen, Zhonghe Pang, Jiyang Wang   +4 more
doaj   +1 more source

Modelling Climate Change Effects on Groundwater Recharge and Temperature for a Pre‐Alpine Lysimeter

Hydrological Processes, Volume 40, Issue 7, July 2026.
Climate change is projected to increase winter groundwater recharge and extreme precipitation events in pre‐alpine regions. Groundwater temperatures will rise by up to 26%, primarily driven by air temperature. These trends pose challenges for future water availability and quality, requiring adaptive water resource management.
Christian Moeck, Jannis Epting, Joaquin Jimenez‐Martinez, Love Råman Vinnå, Martin Hirschi, Mario Schirmer, Raoul A. Collenteur, John Molson   +7 more
wiley   +1 more source

Performance analysis of deep borehole heat exchangers for decarbonization of heating systems

Deep Underground Science and Engineering
Meeting the climate change mitigation targets will require a substantial shift from fossil to clean fuels in the heating sector. Heat pumps with deep borehole exchangers are a promising solution to reduce emissions.
Andreas E. D. Lund
doaj   +1 more source

Heat transfer analysis of deep coaxial geothermal heat exchangers: Insights into heat-flux distribution on borehole wall

Energy and Built Environment
Deep geothermal heat exchangers (DGHEs) have emerged as a potential approach to exploiting geothermal energy as a stable high-temperature heat source for ground-coupled heat pumps.
Shurun Wang, Xianhua Deng, Jing Wang, Min Li   +3 more
doaj   +1 more source

The Glacial Legacy of the Geneva Basin: Morphology and implications of an intricate tunnel valley system revealed from 3D seismic data

Journal of Quaternary Science, Volume 41, Issue 5, Page 732-753, July 2026.
ABSTRACT Like other perialpine basins and glaciated margins, the Geneva Basin in SW Switzerland is characterised by buried tunnel valleys, which are elongated incisions widely attributed to subglacial meltwater erosion beneath continental ice sheets. However, an inclusive understanding of the geological control on the evolution of the glacial landscape
Ovie Emmanuel Eruteya, Emna Meftah, Andrea Moscariello   +2 more
wiley   +1 more source