Results 121 to 130 of about 6,573 (250)

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

A Systematic Review of Participatory Science Approaches in K–12 Ecological Monitoring

Science Education, EarlyView.
ABSTRACT Participatory science has emerged as a vital educational approach for engaging K–12 learners in authentic scientific inquiry while generating data for ecological monitoring. This systematic review synthesizes 72 empirical studies published between 2006 and 2025 that involved K–12 students in ecological monitoring projects.
Ho Yeong Yu, Seongjae Lee, Jae Geun Kim
wiley   +1 more source

From Waste to Value: A Data‐Driven Framework for Sustainable Raw Materials Substitution in the Ceramic Industry

Sustainable Development, EarlyView.
ABSTRACT With increasing geopolitical risks, environmental pressures, and regulatory demands, the sustainable sourcing of raw materials has become a global priority for achieving the United Nations Sustainable Development Goals (SDGs), particularly SDG 9 (Industry, Innovation and Infrastructure), SDG 12 (Responsible Consumption and Production), and SDG
Francesco Parisi, Luciana Randazzo, Davide Settembre Blundo, Isabella Ganci, Silvestro Antonio Ruffolo, Mauro Francesco La Russa   +5 more
wiley   +1 more source

Reactivity of Oxidized Porous Silicon with Calcium Ion in Aqueous Media: Stability, pH Behavior, and Host‐Guest Strategies

Small, EarlyView.
Oxidized porous silicon, composed of an elemental silicon porous skeleton coated with a silica shell, reacts with aqueous Ca2+ to generate a mixed silica–calcium silicate matrix that is remarkably efficient at trapping small molecules. With an emphasis on the engineering of controlled‐release drug delivery systems, this study identifies the factors ...
Ruhan Fan, Qinglin Yang, Michael J. Sailor   +2 more
wiley   +1 more source

Interplay Between Oxidation State, Intervalence Charge Transfer Transitions and Electronic Conductivity in a Series of Ru‐Based Metal–Organic Frameworks

Small, EarlyView.
Ru‐based square‐grid metal–organic frameworks undergo dramatic conductivity enhancements after chemical oxidation. The mixed‐valent states exhibit the highest conductivity values, which correlate with the appearance of intervalence charge transfer bands.
Wang Zhang, Chunyu Luo, Hiroaki Suzuki, Hiroyoshi Ohtsu, Kiyohiro Adachi, Daisuke Hashizume, Bun Chan, Koji Harano, Biplab Manna, Yuki Wada, Masa‐aki Haga, Pavel M. Usov, Masaki Kawano   +12 more
wiley   +1 more source

Investigation of Tin Oxide Atomic Layer Deposition on the Performance of Evaporated Perovskite Solar Cells

Small, EarlyView.
Impact of co‐reactants and their doses utilized during the atomic layer deposition of SnOx on perovskite/C60 structures on the performance of p‐i‐n perovskite solar cells. ABSTRACT Although tin oxide (SnOx) layers grown using atomic layer deposition (ALD) are routinely employed in p‐i‐n perovskite solar cells (PSCs), the correlation between ALD process
Bhavya Rakheja, Adam Hultqvist, Maart Van Druenen, Pontus Törnblom, Fredrik Larsson, Jörgen Olsson, Carl Hägglund, Evelyn Johannesson, Laurent Duda, Håkan Rensmo, Erik M. J. Johansson, Erik Wallin, Tobias Törndahl   +12 more
wiley   +1 more source

Resonance‐Enhanced Four‐Wave Mixing Imaging for Mapping Defect Regions in Vanadium‐Doped WS2 Monolayers

Small Methods, EarlyView.
Resonant four‐wave mixing (FWM) microscopy reveals a spatial modulation of the third‐order nonlinear optical response in vanadium‐doped WS2 monolayers. This robust nonlinear contrast technique tracks the preferential accumulation of vanadium dopants along the structural bisection lines of the synthesized flakes.
Felipe Menescal, Frederico B. Sousa, Mingzu Liu, Ana P. M. Barboza, Igor F. Curvelo, Matheus J. S. Matos, Da Zhou, Bernardo R. A. Neves, Helio Chacham, Mauricio Terrones, Bruno R. Carvalho, Leandro M. Malard   +11 more
wiley   +1 more source

Towards High‐Throughput Testing of Bipolar Plate Materials for Proton Exchange Membrane Water Electrolyzers: Correlative Contact Resistance and Stability Analysis

Small Methods, EarlyView.
Bipolar plates are a major cost driver in proton exchange membrane water electrolyzers (PEMWE) and require novel cost‐effective materials combining high corrosion resistance with low interfacial contact resistance (ICR). We present a correlative workflow for spatially resolved dissolution and ICR measurements by developing a miniaturized ICR ...
Lena Fiedler, Andreas Körner, George Pätzold, Elaheh Akbarnejad, Alan Savan, Simon Thiele, Dominik Dworschak, Alfred Ludwig, Karl J. J. Mayrhofer, Andreas Hutzler   +9 more
wiley   +1 more source

Integrating scanning X-ray scattering and fluorescence for multi-scale analysis of seed structure supported by machine learning tools. [PDF]

Plant Methods
Merten L, Lotze G, Ahmad M, Roosen-Runge F.   +3 more
europepmc   +1 more source

Hydrogen‐Based Reduction of Hematitic Iron Ore in a Fluidized Bed Kinetic Reactor at Elevated Pressures

steel research international, EarlyView.
This study investigates the reduction behavior of two international iron ores, including a synthetic hematite produced by oxidation of magnetite, in a novel fluidized‐bed kinetic reactor at elevated pressures. The reduction takes place at various temperatures (650°C, 700°C, and 750°C), and various hydrogen partial pressures (30, 55, and 80 vol% H2 ...
Valentina Nigitz, Aaron Wieder, Sandra Jezernik, Christoph Ahr, Mark Berchtold, Franz Winter   +5 more
wiley   +1 more source