Results 161 to 170 of about 2,949,481 (364)

Assessment of fly ash based sand as a perspective alternate backfill material for stowing in mining activity

open access: yesDiscover Geoscience
Due to the paucity of river sand and increased regulations on sand mining, mine fill voids are kept emptied, fostering the demand for alternate backfilling material.
Kummari Sekhar, Bendadi Hanumantha Rao
doaj   +1 more source

The emerging use of magnetic resonance imaging to study river bed dynamics [PDF]

open access: yes, 2015
The characterization of surface and sub-surface sedimentology has long been of interest to gravel-bed river researchers. The determination of surface structure is important as it exerts control over bed roughness, near-bed hydraulics and particle ...
Haynes, Heather   +4 more
core  

Transition Metal Slab Gliding: One Key Process for Activating Anionic Redox Reaction in P2‐Type Transition Metal Oxide Cathodes

open access: yesAdvanced Science, EarlyView.
Transition metal (TM) slab gliding is a key process for activating anionic redox reaction in P‐type layered oxide materials. Disordered TM layer weakens interlayer interactions and facilitates TM slab gliding. The resulting O‐type layer promotes reversible TM migration, provides the necessary Na–O–□TM configuration, and activates anionic redox reaction.
Dongxiao Wang   +12 more
wiley   +1 more source

Impacts of water treatments on bacterial communities of biofilm and loose deposits in drinking water distribution systems

open access: yesEnvironment International
Treated drinking water is delivered to customers through drinking water distribution systems (DWDSs). Although studies have focused on exploring the microbial ecology of DWDSs, knowledge about the effects of different water treatments on the bacterial ...
Yue Zhang   +7 more
doaj  

Hydrogen‐Producing Catalysts Based on Ferredoxin Scaffolds

open access: yesAdvanced Science, EarlyView.
Selected plant‐type ferredoxins that lack their natural [2Fe‐2S] clusters functionally bind a hydrogenase active site cofactor and act as hydrogenases themselves. In combination with photosystem I, the light‐dependent H₂ evolution almost matches the H₂ production rates of the natural system.
Yiting She   +6 more
wiley   +1 more source

Reductive Supramolecular In Situ Construction of Nano‐Platinum Effectively Couples Cathodic Hydrogen Evolution and Anodic Alcohol Oxidation

open access: yesAdvanced Science, EarlyView.
The supramolecular framework reductant is developed to realize the in situ construction of highly dispersed ultrafine nano‐Pt. The nano‐Pt supported on the BCN carrier realizes multi‐scenario electrocatalytic water hydrogen production, and establish a high‐performance cathode hydrogen evolution‐anode methanol oxidation coupling system, presenting a low‐
Rui Bai   +7 more
wiley   +1 more source

TCMD: A High‐Throughput and Rapid Method for Screening Antimicrobial Ingredients from Renewable Bio‐Based Resources

open access: yesAdvanced Science, EarlyView.
This study develops a strategy to screen the active compounds from bio‐mixtures via combining transcriptomic profiling and molecular docking. The proposed method demonstrates 100% correction in three different biobased mixtures and is 3–20 times faster than traditional approaches.
Yongdong Xu   +8 more
wiley   +1 more source

Bionic Nanostructures Create Mechanical Signals to Mediate the Composite Structural Bone Regeneration Through Multi‐System Regulation

open access: yesAdvanced Science, EarlyView.
Inspired by the structural and functional characteristics of bone, bionic nanomaterials combined with nanotechnology can more accurately replicate stem cell niches, enabling the design of bone tissue engineering scaffolds with diverse nanoscale properties to promote stem cell migration, proliferation, and differentiation. This precise control over stem
Yangfan Pei   +11 more
wiley   +1 more source

Warming Increases Environmental DNA (eDNA) Removal Rates in Flowing Waters

open access: yesEnvironmental DNA
The use of environmental DNA (eDNA) for aquatic conservation is emerging, but its value is limited by our understanding of how environmental factors like temperature impact eDNA persistence. Although elevated temperatures are known to increase eDNA decay
Elise D. Snyder   +10 more
doaj   +1 more source

Ultralow Overpotential in Rechargeable Li–CO2 Batteries Enabled by Caesium Phosphomolybdate as an Effective Redox Catalyst

open access: yesAdvanced Science, EarlyView.
This study represents the first application of a Keggin‐type polyoxometalate, caesium phosphomolybdate (CPM), as a bifunctional redox catalyst for rechargeable Li–CO2 batteries. CPM significantly reduced the potential gap between discharge and charge reactions to 0.67 V, outperforming most reported catalysts. It also exhibited a high discharge capacity
Mahsa Masoudi   +9 more
wiley   +1 more source

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