Results 141 to 150 of about 157,645 (312)

Borehole Optical Fibre Distributed Temperature Sensing vs. Manual Temperature Logging for Geothermal Condition Assessment: Results of the OptiSGE Project

Sensors
Geothermal energy is a crucial component contributing to the development of local thermal energy systems as a carbon-neutral and reliable energy source. Insights into its availability derive from knowledge of geology, hydrogeology and the thermal regime ...
Maciej R. Kłonowski, Anders Nermoen, Peter J. Thomas, Urszula Wyrwalska, Weronika Pratkowiecka, Agnieszka Ładocha, Kirsti Midttømme, Paweł Brytan, Anna Krzonkalla, Adrianna Maćko, Karol Zawistowski, Jolanta Duczmańska-Kłonowska   +11 more
doaj   +1 more source

Seasonal variations in the subsurface ultraviolet-B on an inshore Pacific coral reef ecosystem

, 2013
Fringing coral reefs provide a unique opportunity to study shallow aquatic ecosystems. A fringing coral reef system located in close proximity to a developed region was considered in this study.
Schouten, Peter W., Parisi, Alfio V., Downs, Nathan J.   +2 more
core   +1 more source

Influence of snow cover on albedo reduction by snow algae

mBio
Snow algae darken the surface of snow, reducing albedo and accelerating melt. However, the impact of subsurface snow algae (e.g., when cells are covered by recent snowfall) on albedo is unknown.
Pablo Almela, James J. Elser, J. Joseph Giersch, Scott Hotaling, Trinity L. Hamilton   +4 more
doaj   +1 more source

Iron-based subsurface arsenic removal technologies by aeration: A review of the current state and future prospects

, 2018
Arsenic contamination in groundwater is a critical issue and one that raises great concern around the world as the cause of many negative health impacts on the human body, including internal and external cancers.
Jan Hoinkis, Luong, Vu T., Hoinkis, Jan, Bundschuh, Jochen, Ulrich Hellriegel, Jochen Bundschuh, Tran L. Luu, Kurz, Edgardo E. Canas, Hellriegel, Ulrich, Vu T. Luong, Luu, Tran L., Edgardo E. Cañas Kurz   +11 more
core   +1 more source

Efficacy of elastic-plastic constitutive models in predicting the geo-mechanical response of gas hydrate sediments [PDF]

E3S Web of Conferences, 2020
Wani Sahil, Samala Rahul, Chaudhuri Abhijit, Kannan Kandasami Ramesh   +3 more
doaj   +1 more source

Role of Water in Low‐Temperature CO2 Reduction at Defect‐Rich TiO2

Angewandte Chemie International Edition, EarlyView.
Our results highlight the potential of reduced titania as a noble metal‐free CO2 activation catalyst and show the activation of CO2 on highly defective TiO2 using in situ synchrotron‐based NAP‐XPS from room temperature to 700 K. The distribution of surface intermediates can be decoded as a simultaneous population of reaction routes, revealing water (OH)
Justin Klimek, Filip Hallböök, Niko Kruse, Fangliang Li, Sara Blomberg, Katharina Al‐Shamery, Lars Mohrhusen   +6 more
wiley   +1 more source

Optimized Selenium‐Doped Nanocomposites for Enhanced Polymer Gel Performance in Permeability Reduction

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Excessive water production in mature oil fields necessitates robust shut‐off treatments, yet conventional polymer gels often fail under high‐temperature and high‐salinity conditions. This study aims to enhance gel thermal stability and mechanical strength by incorporating selenium‐doped Ag/AgO–ZnO nanocomposites synthesized via a novel green ...
Fadhil F. Sead, Farag M. A. Altalbawy, M. Sudhakara Reddy, Badri Narayan Sahu, Sridharan Sundharam, Sanjeev Kumar, Atreyi Pramanik, Aseel Smerat, Fatimah Pashtun   +8 more
wiley   +1 more source

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Quantification of Sulfonated Polyacrylamides by SEC‐UV in Produced Water: Validation and Oilfield Case Study

Journal of Applied Polymer Science, EarlyView.
Size exclusion chromatography with UV–vis detection, combined with ultrasonication pretreatment, enables sensitive detection and quantification of back‐produced polymer at very low concentrations in produced water. This approach supports reliable polymer monitoring and offers a practical route to improve surveillance of polymer flooding performance ...
Eduardo José Creatto, Luis Maqueira, Daniel da Silva Vicente, Thierry Leblanc, Nathaniel Terra, Lara Arinelli, Aurora Pérez‐Gramatges   +6 more
wiley   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source