Results 131 to 140 of about 486,715 (397)

The Kiltorcan Fossils [PDF]

open access: yesNature, 1872
I HAVE just seen Mr. Carruthers' letter in your number of January 4th, to which I beg leave to reply.
openaire   +3 more sources

Low‐Temperature Exsolution of Cobalt From Perovskite Nanoparticles via Bead Milling for Enhanced Electrocatalytic Oxygen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
High‐temperature requirements and complex synthesis limit the practical use of perovskite‐based metal exsolution catalysts. This study addresses these limitations by employing bead milling, enabling efficient metal exsolution at a significantly lower temperature (300 °C) from La0.6Sr0.4CoO3‐δ nanoparticles. Consequently, the catalytic mass activity for
Sang‐Mun Jung   +10 more
wiley   +1 more source

Étude de collections de paléontologie

open access: yesCeROArt : Conservation, Exposition, Restauration d'Objets d'Art, 2013
Paleontology Collections include many fossils containing sulphides, such as pyrite which is a widespread iron sulphide. When exposed to the open air, these sulphides are prone to oxidation and give rise to remarkable efflorescence that hide the fossil ...
Giliane Pauline Odin   +2 more
doaj   +1 more source

FOSSIL CHRYSOPIDÆ. [PDF]

open access: yesThe Canadian Entomologist, 1908
v. 40 (1908)
openaire   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

open access: yesAdvanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa   +7 more
wiley   +1 more source

The public perception of palaeontology in Scotland: "archaeologists dig dinosaurs" [PDF]

open access: yes, 2008
There is very little written about how palaeontology is perceived by the public. Perhaps the reason is that very few professional palaeontologists have concerned themselves with public opinion, so engrossed they are with their own speciality and not ...
Clark, N.D.L.
core  

Fine‐Tunning BaCo0.4Fe0.4Zr0.1Y0.1O3−δ‐Based Air Electrodes for Reversible Protonic Ceramic Cells via Co‐Engineering A‐site Deficiency and Nickel Content

open access: yesAdvanced Functional Materials, EarlyView.
A synergistic strategy combining A‐site deficiency and B‐site nickel doping yielded a BCFZYN‐095‐01 nanocomposite air electrode for reversible protonic ceramic cells with superior ORR/OER activities. B‐site deficiency in the perovskite lattice enhances proton conduction, and nickel doping within the bulk facilitates oxygen transport.
Mingzhuang Liang   +12 more
wiley   +1 more source

3D Concrete Printing of Triply Periodic Minimum Surfaces for Enhanced Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
A 3D‐printable and carbon‐capturing concrete is developed by replacing cement with diatomaceous earth (DE), which enhances rheology, provides hierarchical porosity, and serves as a nucleation site for carbonation. Maximum absorption of 488.7 gCO2 kgcement−1 is achieved in 7 days, a 142% increase over conventional concrete, and the triply periodic ...
Kun‐Hao Yu   +9 more
wiley   +1 more source

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